Bronchiectasis not due to cystic fibrosis. / Bronquiectasias no debidas a fibrosis quística.

Bronchiectasis is a clinical-radiological condition composed of irreversible bronchial dilation due to inflammation and infection of the airways, which causes respiratory symptoms, usually productive cough and infectious exacerbations. Bronchiectasis can have multiple causes, both pulmonary and extrapulmonary, and its clinical presentation is very heterogenous. Its prevalence is unknown, although up to 35-50% of severe COPD and 25% of severe asthma present them, so their underdiagnosis is evident. Chronic bacterial bronchial infection is common, and Pseudomonas aeruginosa is the pathogen that has been found to imply a worse prognosis. Treatment of bronchiectasis has three fundamental characteristics: it must be multidisciplinary (involvement of several specialties), pyramidal (from primary care to the most specialized units) and multidimensional (management of all aspects that make up the disease).

A quality improvement intervention on surgical prophylaxis impact in antibiotic consumption and cost in selected surgical procedures.

BACKGROUND: Improper compliance with antibiotic prophylaxis (AP) in surgery is associated with an increased risk of surgical site infection (SSI), and impacts the efficiency of healthcare. OBJECTIVE: Evaluate the impact of an intervention in compliance with AP in selected surgical procedures and its effect on antibiotic consumption and cost. METHODS: A prospective interventional study was performed in a community hospital from January to December 2022. The baseline period was considered January-April 2022 and the intervention period May-December 2022. All patients who underwent cesarean section, appendectomies, hernia surgery, open reduction and internal fixation (ORIF), abdominoplasty, and cholecystectomy during the study period were selected. The intervention includes staff education, pharmacy interventions, monitoring the quality of prescriptions and feedback, and improved role of anesthesia staff, and department champions. RESULTS: The study involved 192 and 617 surgical procedures in the baseline and intervention periods respectively. The compliance with timing, selection, dose, and discontinuation achieved 100%, 99.2%, and 97.6% from baseline figures of 92.7%, 95.8%, and 81.3%, respectively. The antibiotic consumption was reduced by 55.1% during the intervention with a higher contribution of other antibiotics (94.1% reduction) in comparison with antibiotics as per policy (31.2% reduction). The cost was reduced by 47.2% (antibiotic as per policy 31.9%, other antibiotics 94.2%). CONCLUSION: The implemented strategy was effective in improving the quality of antibiotic prophylaxis with a significant impact in reducing antibiotic consumption and cost.

Identificación y caracterización de herramientas para evaluar la alergia a las penicilinas: Revisión estructurada / Identification and characterization of tools used to assess penicillin allergy: structured review

Introducción: Las reacciones alérgicas son uno de los problemas de seguridad más graves asociadas al uso de medicamentos, siendo la alergia a los antibióticos betalactámicos la más prevalente. Las pruebas de alergia a las penicilinas pueden ayudar a identificar pacientes hospitalizados y ambulatorios que podrían tolerar y usar de manera segura este grupo de antibióticos y evitar rótulos que limiten el uso de antibióticos betalactámicos por tiempo indefinido. Objetivo: Identificar las herramientas disponibles en la literatura para valorar el antecedente de alergia a las penicilinas y proponer una herramienta que consolide la información extraída. Metodología: Revisión estructurada en PubMed/MEDLINE entre 1 junio 2015 hasta 30 noviembre 2022, utilizando los términos MeSH: (((“skin tests”[MeSH Terms]) OR (“skin irritancy tests”[MeSH Terms])) AND (“penicillins”[All Fields])) AND (“drug hypersensitivity”[MeSH Terms]). Publicaciones en inglés y español con acceso a texto completo y estudios realizados en humanos, sobre herramientas disponibles para evaluar la alergia a penicilinas fueron incluidos. Resultados: Se identificaron201 artículos, de los cuales se incluyeron 108. Dentro de las herramientas para evaluar la alergia a las penicilinas se identificaron: a) pruebas in vivo: pruebas cutáneas, pruebas de provocación oral, pruebas del parche; y b) pruebas in vitro: pruebas de IgE específica, determinación de triptasa, histamina. De los 1181 pacientes reportados con alergia a las penicilinas, sólo el 2 % de ellos se confirmó la presencia de alergia. Conclusión: Las pruebas cutáneas y de provocación oral sumado a algunas combinaciones in vivo/in vitro, fueron las herramientas más utilizadas para evaluar la alergia a las penicilinas. (AU)

Introduction: Allergic reactions are one of the most serious safety problems associated with the use of medications, with allergy to beta-lactam antibiotics being the most prevalent. In fact, the American Academy of Allergy, Asthma and Immunology (AAAAI) states that penicillin allergy testing can help identify inpatients and outpatients who could safely tolerate and use this group of antibiotics and avoid labels that limit the use of beta-lactam antibiotics indefinitely. Objective: To identify the tools available in the literature to assess the history of allergy to penicillins and propose a tool that consolidates the information extracted. Methodology: Structured review on PubMed/MEDLINE between June 1, 2015 until November 30, 2022; using the search terms MeSH: (((“skin tests”[MeSH Terms]) OR (“skin irritancy tests”[MeSH Terms])) AND (“penicillins”[All Fields])) AND (“drug hypersensitivity”[MeSH Terms]). Papers in English and Spanish with access to full text and human trials, regarding available tools used to evaluate penicillin allergies were included. Results: A total of 201 articles were identified, of which after an independent evaluation, 108 were included. Among the tools to evaluate penicillin allergy, in vivo tests were identified: skin tests, oral provocation tests, patch tests and in vitro tests: specific IgE tests, determination of tryptase, histamine, T lymphocytes and basophilic activation tests. Of the patients (1181) reported with penicillin allergy, 905 (77 %) had their allergy assessed with skin testing or oral challenge tests, and only 2 % of them had a confirmed allergic reaction. Conclusion: Skin tests and oral provocation tests added to some in vivo/in vitro combinations were the most used tools to evaluate penicillin allergy. (AU)

Consumo de antibióticos en los primeros meses de vida: un estudio transversal / Antibiotic consumption in the first months of life: A cross-sectional study

Introducción: Los factores y patrones asociados al consumo de antibióticos en los lactantes no están claros. Nuestro objetivo fue evaluar la incidencia acumulada de consumo de antibióticos desde el nacimiento hasta los 16meses e identificar los factores asociados al consumo de antibióticos entre lactantes de 4 a 16meses. Material y métodos: Se realizó un estudio transversal en 2016 que incluyó una muestra de la población de 18.882 mujeres españolas de Galicia que habían dado a luz a un niño vivo entre el 1 de septiembre de 2015 y el 31 de agosto de 2016. Se calculó la incidencia acumulada de consumo de antibióticos a partir de los resultados de la entrevista a la madre sobre el consumo del lactante desde el nacimiento hasta los 14meses; no se estimó a los 15 y 16meses debido al reducido tamaño muestral. Para valorar las características asociadas al consumo de antibióticos se anidó en el estudio transversal un estudio de casos y controles emparejando por mes de nacimiento, un control por caso. Resultados: La incidencia acumulada de consumo de antibióticos entre los lactantes de 0 a 14meses de edad aumentó del 7,5% al 66,0%. Para el estudio de casos y controles, se obtuvo información de 1.852 casos y de 1.852 controles. La asistencia a la guardería (OR: 3,8 [IC95%: 3,2-4,6]), tener hermanos/as mayores (OR: 1,8 [IC95%: 1,6-2,1]), las consultas sanitarias en la clínica privada (OR: 1,6 [IC95%:1,4-2,0]) o haber estado expuesto al humo ambiental de tabaco (OR: 1,3 [IC95%: 1,1-1,6]) se asociaron con un mayor riesgo de consumo de antibióticos. Tener madres de entre 30 y 39años o de 40años y más en el momento del parto se asoció con un menor riesgo de consumo de antibióticos (OR: 0,8 [IC95%: 0,7-1,0] y OR: 0,6 [IC95%: 0,5-0,8], respectivamente).(UA)

Introduction: The factors and patterns associated with antibiotic consumption in infants are unclear. Our aim was to assess the cumulative incidence of antibiotic consumption from birth to 16 months and identify factors associated with antibiotic consumption among infants aged 4 to 16 months. Material and methods: We conducted a cross-sectional study in 2016 in a sample of 18,882 women from Galicia, Spain, who had given birth to a live child between September 1, 2015 and August 31, 2016. We calculated the cumulative incidence of antibiotic consumption based on maternal reports regarding the infant's consumption from birth to 14 months obtained through interviews; we did not estimate consumption at ages 15 and 16 months due to the small sample size. To assess which factors were associated with antibiotic consumption, we carried out a nested case-control study matching cases and controls for birth month on a 1:1 ratio. Results: The cumulative incidence of antibiotic consumption among infants aged 0 to 14 months increased from 7.5% to 66.0%. The case-control study included data for 1,852 cases and 1,852 controls. Daycare attendance (OR: 3.8 [95%CI: 3.2-4.6]), having older siblings (OR: 1.8 [95%CI: 1.6-2.1]), health care visits to private clinics (OR: 1.6 [95%CI: 1.4-2.0]), and passive smoking (OR: 1.3 [95%CI: 1.1-1.6]) were associated with an increased probability of antibiotic consumption. Maternal age between 30-39 years or 40 years and over at the time of birth was associated with a decreased probability of antibiotic consumption (OR: 0.8 [95%CI, 0.7-1.0] and OR: 0.6 [95%CI: 0.5-0.8], respectively). Conclusions: Some of the factors associated with antibiotic consumption in infants are modifiable and should be considered in the development of public health measures aimed at reducing antibiotic consumption.(AU)

Antibiotic consumption in the first months of life: A cross-sectional study.

INTRODUCTION: The factors and patterns associated with antibiotic consumption in infants are unclear. Our aim was to assess the cumulative incidence of antibiotic consumption from birth to 16 months and identify factors associated with antibiotic consumption among infants aged 4-16 months. MATERIAL AND METHODS: We conducted a cross-sectional study in 2016 in a sample of 18 882 women from Galicia, Spain, who had given birth to a live child between September 1, 2015 and August 31, 2016. We calculated the cumulative incidence of antibiotic consumption based on maternal reports regarding the infant's consumption from birth to 14 months obtained through interviews; we did not estimate consumption at ages 15 and 16 months due to the small sample size. To assess which factors were associated with antibiotic consumption, we carried out a nested case-control study matching cases and controls for birth month on a 1:1 ratio. RESULTS: The cumulative incidence of antibiotic consumption among infants aged 0-14 months increased from 7.5% to 66.0%. The case-control study included data for 1852 cases and 1852 controls. Daycare attendance (OR: 3.8 [95% CI: 3.2-4.6]), having older siblings (OR: 1.8 [95% CI: 1.6-2.1]), health care visits to private clinics (OR: 1.6 [95% CI: 1.4-2.0]), and passive smoking (OR: 1.3 [95% CI: 1.1-1.6]) were associated with an increased probability of antibiotic consumption. Maternal age between 30-39 years or 40 years and over at the time of birth was associated with a decreased probability of antibiotic consumption (OR: 0.8 [95% CI, 0.7-1.0] and OR: 0.6 [95% CI: 0.5-0.8], respectively). CONCLUSIONS: Some of the factors associated with antibiotic consumption in infants are modifiable and should be considered in the development of public health measures aimed at reducing antibiotic consumption.

El farmacéutico clínico en el abordaje del paciente con sospecha de alergia a beta-lactámicos: una revisión sistemática / The role of clinical pharmacists in patients with suspected allergy to B-lactams: A systematic review

Objetivo analizar el papel desempeñado por el farmacéutico clínico y su impacto en el ámbito de los programas de optimización de antimicrobianos ante la sospecha de alergia a antibióticos beta-lactámicos.Método se realizaron 2 búsquedas bibliográficas independientes. Se encontraron un total de 35 artículos incluyéndose 12. Se analizaron los artículos incluidos y se recogieron variables de eficacia, seguridad y aplicabilidad de herramientas de evaluación a pacientes con sospecha de alergia a beta-lactámicos. Además, se analizó la variación en el consumo y en el perfil de prescripción de antibióticos alternativos. Resultados los estudios seleccionados analizaron cuestionarios, desetiquetado, test intradérmicos y pruebas de provocación oral realizados por farmacéuticos. Se hallaron diferencias significativas en la variable principal de eficacia en 4 estudios incluidos a favor de la intervención farmacéutica. En un estudio cuasi experimental, la utilización de cefazolina aumentó tras la intervención farmacéutica (65 vs. 28%; p < 0,01). En otro estudio cuasi experimental, la dosis diaria definida media de aztreonam y la media de días de terapéutica por 1.000 pacientes/día disminuyeron (21,23 vs. 9,05; p < 0,01) y (8,79–4,24; p = 0,016), pre y postintervención, respectivamente, aumentando las desescaladas antibióticas (p ≤ 0,01). En otro estudio, disminuyó la prescripción de antibióticos de uso restringido (42,5 vs. 17,9%; p < 0,01) y en otro, la utilización de antibióticos profilácticos prequirúrgicos alternativos a cefazolina (81,9 vs. 55,9%; p < 0,01). En otro estudio, el tiempo medio por entrevista fue de 5,2 minutos por paciente. No se reportaron eventos adversos en ningún estudio. Conclusiones la intervención del farmacéutico en la evaluación del paciente con sospecha de alergia a beta-lactámicos resulta eficaz, segura y aplicable a la práctica clínica (AU)

Objective To analyze the role played by the clinical pharmacist and its impact in antibiotic stewardship facing suspected allergy to beta-lactam antibiotics. Method We performed two different independent bibliographic searches. A total of 35 articles were found, and the final number included in the study was 12. We analysed the articles and collected variables of efficacy, safety and applicability of evaluation tools applied to patients with suspected allergy to beta-lactams. Also, the variation in the consumption and prescription profile of alternative antibiotics was analyzed. Results The selected studies analysed questionnaires, allergy delabeling, intradermal tests and oral challenge tests performed by pharmacists. Significant differences in the efficacy endpoint were found in 4 studies in favour of pharmaceutical intervention. In the study of Kwiatkowski et al, cefazolin use increased in surgical patients after pharmacist intervention (65 vs. 28%; p < 0.01). In a quasi-experimental study, the mean defined daily dose of aztreonam and the mean days of therapy per 1000 patients/day decreased (21.23 vs 9.05, p <0.01) and (8.79–4.24, p = 0.016), pre and post-intervention, respectively, increasing antibiotic de-escalations (p ≤ 0.01). In another quasi-experimental study, the prescription of restricted-use antibiotics decreased (42.5% vs. 17.9%, p < 0.01) and the use of pre-surgical prophylactic antibiotics alternative to cefazolin (81.9% vs 55.9%, p<0.01) in another study. Other study showed that the mean time per interview was 5.2 minutes per patient. No adverse events were reported in any study. Conclusion The pharmacist intervention in the evaluation of the patient with suspected allergy to beta-lactams is effective, safe and feasible to implement on daily clinical practice (AU)

Achromobacter xylosoxidans keratitis in a LASIK flap treated with intrastromal antibiotics: a case report.

Intrastromal antibiotic injections are a type of treatment that can be very useful in bacterial keratitis refractory to topical antibiotics. We present the case of a 44-year-old woman with an infiltrate in a laser in situ keratomiuleusis (LASIK) flap and growth of Achromobacter xylosoxidans, who was treated with topical ceftazidime for 1 month. However, after discontinuation of the antibiotic, there was a worsening with growth of the same germ. Topical treatment was reintroduced and, due to suspicion of germ reservoir, it was decided to give three cycles of intrastromal ceftazidime injections, the last one also with moxifloxacin, with good results. After 4 months asymptomatic and without treatment at the moment, no signs of recurrence have been observed. This case supports the usefulness of intraestromal injections in refractory cases to the topical medication.

Beneficios de la estandarización en el manejo de la apendicitis aguda / Benefits of standardization in the management of acute appendicitis

bjetivos. La apendicitis aguda (AA) es la patología quirúrgica pediátrica urgente más frecuente, pero su manejo postoperatorio es variable. La aplicación de protocolos minimiza esta variabilidad. Presentamos los resultados tras la optimización del protocolo de manejo en nuestro centro con objetivo de determinar su efectividad en cuanto a número de complicaciones infecciosas y optimización de recursos en nuestro medio. Material y métodos. Se realiza un estudio observacional retrospectivo en pacientes intervenidos de AA entre enero 2018 y agosto 2022. Comparamos dos cohortes, antes (1) y después del protocolo (2), subdividiéndolas según gravedad para un análisis por subgrupos: flemonosas (F), gangrenosas (G) y perforadas (P). Resultados. Incluimos 771 pacientes (1: 390/ 2: 381), con distribución homogénea, con mediana de edad 9,3 ± 2,8 años. La solicitud de analíticas previo al alta disminuyó de forma significativa (F: 3,9% vs. 0,5%; p= 0,026; G: 97,6% vs. 13,4%, p< 0,001). Los días de estancia hospitalaria se redujeron en los subgrupos F (1,2 IQR 0,7 vs. 1 IQR 0,36; p< 0,001), y G (4 IQR 1 vs. 3 IQR 1 días; p< 0,001). No se observaron diferencias en el número de abscesos entre los grupos (41 vs. 43 p= 0,73); sí en el subgrupo G (9 vs. 2; p= 0,029). Observamos una reducción del gasto de recursos en F y G. Conclusiones. En nuestro estudio, el subgrupo más beneficiado tras la optimización del protocolo fue el de las apendicitis gangrenosas con una reducción significativa en el número de complicaciones y en la utilización de recursos hospitalarios.(AU)

Objective. Acute appendicitis (AA) is the most frequent urgent surgical pathology in the pediatric population, but postoperative management is variable, with protocols minimizing variability. We present our results following the optimization of the management protocol in ourinstitution in order to establish its efficacy in terms of number of infectious complications and optimization of resources in our environment. Materials and methods. An observational, retrospective study of patients undergoing AA surgery from January 2018 to August 2022 was carried out. Two cohorts were compared, both before (1) and after (2) the implementation of the new protocol. They were divided according to severity in order to conduct a subgroup-based analysis –phlegmonous (PH), gangrenous (G), and perforated (P) appendicitis. Results. 771 patients (1: 390; 2: 381) were included, with a homogeneous distribution and a median age of 9.3 ± 2.8 years. Blood tests requested prior to discharge experienced a significant reduction (PH: 3.9% vs. 0.5%; p= 0.026; G: 97.6% vs. 13.4%, p< 0.001). Days of hospital stay decreased in the PH (1.2 IQR: 0.7 vs. 1 IQR: 0.36; p< 0.001) and G (4 IQR: 1 vs. 3 IQR: 1 days; p< 0.001) subgroups. No differences in the number of abscesses were found between groups (41 vs. 43; p= 0.73), but they were noted within subgroup G (9 vs. 2; p= 0.029). A reduction in resource expenses was detected in PH and G appendicitis. Conclusions. In our study, the most widely benefited subgroup following protocol optimization was the gangrenous appendicitis subgroup, with a significant reduction in the number of complications and the use of hospital resources.(AU)

Rapid diagnostic tests for dengue would reduce hospitalizations, healthcare costs and antibiotic prescriptions in Spain: A cost-effectiveness analysis / Los tests de diagnóstico rápido para dengue reducirían las hospitalizaciones, los costes sanitarios y la prescripción de antibióticos en España: un análisis de coste-efectividad

Background: Current gold standard diagnostic techniques for dengue are expensive and time-consuming. Rapid diagnostic tests (RDTs) have been proposed as alternatives, although data about their potential impact in non-endemic areas is scarce. Methods: We performed a cost-effectiveness analysis comparing the costs of dengue RDTs to the current standard of care for the management of febrile returning travelers in Spain. Effectiveness was measured in terms of potential averted hospital admissions and reduction of empirical antibiotics, based on 2015–2020 dengue admissions at Hospital Clinic Barcelona (Spain). Results: Dengue RDTs were associated with 53.6% (95% CI: 33.9–72.5) reduction of hospital admissions and were estimated to save 289.08–389.31€ per traveler tested. Moreover, RDTs would have avoided the use of antibiotics in 46.4% (95% CI: 27.5–66.1) of dengue patients. Discussion: Implementation of dengue RDTs for the management of febrile travelers is a cost-saving strategy that would lead to a reduction of half of dengue admissions and a reduction of inappropriate antibiotics in Spain.(AU)

Introducción: El actual gold standard para el diagnóstico de dengue se basa en técnicas caras y que requieren tiempo. Los tests de diagnóstico rápido (TDR) se han propuesto como una posible alternativa, aunque los datos sobre su posible impacto en áreas no endémicas son escasos. Métodos: Realizamos un análisis de coste-efectividad comparando los costes del uso de TDR para dengue con el manejo habitual de viajeros con fiebre en España. Para medir la efectividad se estimaron las hospitalizaciones potencialmente evitables y la reducción de antibióticos empíricos de acuerdo con las hospitalizaciones por dengue entre 2015-2020 en el Hospital Clínic Barcelona (España). Resultados: El uso de TDR para dengue se asoció con una reducción de 53.6% (IC 95%: 33.9–72.5) de las hospitalizaciones y un ahorro de 289.08-389.31€ por viajero testado. Además, el uso de TDR hubiese evitado el tratamiento de antibióticos en 46.4% (IC 95%: 27.5–66.1) de los casos de dengue. Discusión: La implementación de TDR de dengue para el manejo de viajeros con fiebre es una medida de reducción de gastos que disminuiría a la mitad los ingresos hospitalarios por dengue y supondría una reducción del uso inapropiado de antibióticos en España.(AU)

Infecciones más frecuentes en pacientes con Lupus Eritematoso Sistémico internados en el Servicio de Clínica Médica del Hospital Nacional / Most frequent infections in patients with Systemic Lupus Erythematosus admitted to the Medical Clinic Service of the Hospital Nacional

Introducción: el lupus eritematoso sistémico (LES) se conoce como una enfermedad autoinmune multisistémica, cuya causa es desconocida, se caracteriza por la presencia de complejos inmunes y autoanticuerpos. En series internacionales se describe una presentación de procesos infecciosos en estos pacientes hasta en un 75 % de los casos, las infecciones ocurren tanto al inicio de la enfermedad como en etapas tardías, y son causa directa de muerte en 30 % a 60 % de los casos y motivo de hospitalización hasta de 30 %. Objetivos: determinar los procesos infecciosos más frecuentes en pacientes con lupus eritematoso sistémico internados en el Servicio de Clínica Médica del Hospital Nacional en el periodo 2022-2023. Metodología: diseño observacional, descriptivo de corte transversal de pacientes con diagnóstico de lupus eritematoso sistémico según criterios de European League Against Rheumatism (EULAR)-2019 que se encuentran internados en el servicio de Clínica Médica del Hospital Nacional (Itaugua-Paraguay) en el periodo de 2022-2023. Resultados: la edad media de los pacientes fue de 34 años, con predominio del sexo femenino en el 88.18 %. Las infecciones del aparato respiratorio fue la más frecuentemente diagnosticada en 50 (45.45 %) pacientes, seguido por la infección de vías urinarias 47 (42.38 %) pacientes, el condicionante de riesgo predominante fue el uso de corticoides en un total 105 (96.40 %) pacientes, se estableció en un total de 97 (88.18 %) pacientes con antibioticoterapia, dentro del aspecto demográfico de la zona urbana 56 (50.90 %) pacientes y rural 54(49.1 %). Conclusión: la infección del aparato respiratorio fue la infección más frecuente, el condicionante de riesgo predominante es el uso de corticoides y recibieron antibioticoterapia la cual en monoterapia fue la más utilizada

Introduction: systemic lupus erythematosus (SLE) is known as a multisystem autoimmune disease, whose cause is unknown, and is characterized by the presence of immune complexes and autoantibodies. In international series, presentation of infectious processes is described in these patients in up to 75 % of cases. Infections occur both at the beginning of the disease and in late stages, and are a direct cause of death in 30 % to 60 % of patients. Cases and reason for hospitalization up to 30 %. Objectives: determine the most frequent infectious processes in patients with systemic lupus erythematosus admitted to the Medical Clinic Service of the Hospital Nacional in the period 2022-2023. Methodology: observational, descriptive cross-sectional design of patients with a diagnosis of systemic lupus erythematosus according to criteria of European League Against Rheumatism (EULAR)-2019 who are admitted to the Medical Clinic service of the Hospital Nacional (Itauguá-Paraguay) in the period of 2022-2023. Results: the average age of the patients was 34 years, with a predominance of the female sex in 88.18 %. Respiratory system infections were the most frequently diagnosed in 50 (45.45 %) patients, followed by urinary tract infection in 47 (42.38 %) patients. The predominant risk factor was the use of corticosteroids in a total of 105 (96.40 %) patients, it was established in a total of 97 (88.18 %) patients with antibiotic therapy, within the demographic aspect of the urban area 56 (50.90 %) patients and rural 54 (49.1 %). Conclusion: respiratory tract infection was the most frequent infection, the predominant risk factor is the use of corticosteroids and they received antibiotic therapy, which in monotherapy was the most used.

Rapid diagnostic tests for dengue would reduce hospitalizations, healthcare costs and antibiotic prescriptions in Spain: A cost-effectiveness analysis.

BACKGROUND: Current gold standard diagnostic techniques for dengue are expensive and time-consuming. Rapid diagnostic tests (RDTs) have been proposed as alternatives, although data about their potential impact in non-endemic areas is scarce. METHODS: We performed a cost-effectiveness analysis comparing the costs of dengue RDTs to the current standard of care for the management of febrile returning travelers in Spain. Effectiveness was measured in terms of potential averted hospital admissions and reduction of empirical antibiotics, based on 2015-2020 dengue admissions at Hospital Clinic Barcelona (Spain). RESULTS: Dengue RDTs were associated with 53.6% (95% CI: 33.9-72.5) reduction of hospital admissions and were estimated to save 289.08-389.31€ per traveler tested. Moreover, RDTs would have avoided the use of antibiotics in 46.4% (95% CI: 27.5-66.1) of dengue patients. DISCUSSION: Implementation of dengue RDTs for the management of febrile travelers is a cost-saving strategy that would lead to a reduction of half of dengue admissions and a reduction of inappropriate antibiotics in Spain.

[Translated article] The role of clinical pharmacists in patients with suspected allergy to ß-lactams: A systematic review.

OBJECTIVE: To analyze the role played by the clinical pharmacist and its impact in antibiotic stewardship facing suspected allergy to beta-lactam antibiotics. METHOD: We performed 2 different independent bibliographic searches. A total of 35 articles were found, and the final number included in the study was 12. We analyzed the articles and collected variables of efficacy, safety, and applicability of evaluation tools applied to patients with suspected allergy to beta-lactams. Also, the variation in the consumption and prescription profile of alternative antibiotics was analyzed. RESULTS: The selected studies analyzed questionnaires, allergy delabeling, intradermal tests, and oral challenge tests performed by pharmacists. Significant differences in the efficacy endpoint were found in 4 studies in favor of pharmaceutical intervention. In the study of Kwiatkowski et al., cefazolin use increased in surgical patients after pharmacist intervention (65% vs 28%; P < .01). In a quasi-experimental study, the mean defined daily dose of aztreonam and the mean days of therapy per 1000 patients/day decreased (21.23 vs 9.05, P <.01) and (8.79-4.24, P = .016), pre- and post-intervention, respectively, increasing antibiotic de-escalations (P = < .01). In another quasi-experimental study, the prescription of restricted use antibiotics decreased (42.5% vs 17.9%, P < .01)and the use of pre-surgical prophylactic antibiotics alternative to cefazolin (81.9% vs 55.9%, P < .01)in another study. Other study showed that the mean time per interview was 5.2 min per patient. No adverse events were reported in any study. CONCLUSION: The pharmacist intervention in the evaluation of the patient with suspected allergy to beta-lactams is effective, safe, and feasible to implement on daily clinical practice. The standardization of protocols to clarify the history of allergies and development of evaluation tools represent simple screenings to perform delabeling or refer to the Immunoallergology service, improving penicilins use and reducing the need for second-line antibiotics. More studies are needed to standardize the desensitization tests made by pharmacists. However, despite these results, the involvement and leadership of the pharmacist in this area is limited and constitutes a future challenge for the profession.

The role of clinical pharmacists in patients with suspected allergy to ß-lactams: A systematic review. / El farmacéutico clínico en el abordaje del paciente con sospecha de alergia a beta-lactámicos: una revisión sistemática.

OBJECTIVE: To analyze the role played by the clinical pharmacist and its impact in antibiotic stewardship facing suspected allergy to beta-lactam antibiotics. METHOD: We performed two different independent bibliographic searches. A total of 35 articles were found, and the final number included in the study was 12. We analysed the articles and collected variables of efficacy, safety and applicability of evaluation tools applied to patients with suspected allergy to beta-lactams. Also, the variation in the consumption and prescription profile of alternative antibiotics was analyzed. RESULTS: The selected studies analysed questionnaires, allergy delabeling, intradermal tests and oral challenge tests performed by pharmacists. Significant differences in the efficacy endpoint were found in 4 studies in favour of pharmaceutical intervention. In the study of Kwiatkowski et al, cefazolin use increased in surgical patients after pharmacist intervention (65 vs. 28%; p < 0.01). In a quasi-experimental study, the mean defined daily dose of aztreonam and the mean days of therapy per 1000 patients/day decreased (21.23 vs 9.05, p <0.01) and (8.79-4.24, p = 0.016), pre and post-intervention, respectively, increasing antibiotic de-escalations (p ≤ 0.01). In another quasi-experimental study, the prescription of restricted-use antibiotics decreased (42.5% vs. 17.9%, p < 0.01) and the use of pre-surgical prophylactic antibiotics alternative to cefazolin (81.9% vs 55.9%, p<0.01) in another study. Other study showed that the mean time per interview was 5.2 minutes per patient. No adverse events were reported in any study. CONCLUSION: The pharmacist intervention in the evaluation of the patient with suspected allergy to beta-lactams is effective, safe and feasible to implement on daily clinical practice. The standardization of protocols to clarify the history of allergies and development of evaluation tools represent simple screenings to perform delabelling or refer to the Immunoallergology service, improving penicilins use and reducing the need for second line antibiotics. More studies are needed to standardize the desensitization tests made by pharmacists. However, despite these results, the involvement and leadership of the pharmacist in this area is limited and constitutes a future challenge for the profession.

Testing for the ability to modify antibiotics of Panus tigrinus 8/18 Lentinus strigosus 1566 laccase / Teste de capacidade para modificar antibióticos a partir da lacase de Panus tigrinus 8/18 e Lentinus strigosus 1566

In advanced biotechnology, the utilization of enzymes to achieve new or modified compounds with antibacterial, fungicidal, and anti-cancer specifications is crucial. Mushroom lactases are a hopeful biocatalyst for the synthesis and modification of different compounds. They are an accessible and inexpensive enzyme for the preparation of reaction objects and have recently received attention. Laccase purification was performed from basidiomycete Lentinus strigosus (LS) in several stages: Stage 1. On ion-exchange chromatography on TEAE Servacell 23 (400 ml), two distinctly separated laccase activity peaks were observed, eluted from the carrier at 0.21 and 0.27 M NaCl. In order to reduce the loss of enzymes, all fractions with laccase activity were collected, concentrated, and desalted using an ultrafiltration cell (Amicon, United States) with a UM-10 membrane. Stage 2. The resulting preparation with laccase activity was applied to a Q-Sepharose column (60 ml). Two well-separated peaks with laccase activity were obtained during the elution: laccase I (0.12 M NaCl) and laccase II (0.2 M NaCl). Stage 3. In the course of further purification of both enzymes, carried out on anion-exchange carrier Resource Q (6 ml), a broken gradient was used: 0 - 10%, 10 - 20%, and 20 - 100% with 1M NaCl. Stage 4. Both laccase I and laccase II, obtained after Resource Q, were desalted, concentrated to 1 ml each, and applied to a Superdex 75 gel filtration column. As a result, two laccases were obtained in a homogeneous form.

Na biotecnologia moderna, o uso de enzimas para obter compostos novos ou modificados com propriedades antibacterianas, antifúngicas e anticancerígenas é crucial. Lactases de cogumelos são biocatalisadores promissores para síntese e modificação de diferentes compostos, por serem enzimas baratas e disponíveis para a preparação de componentes de reação, e vem recebendo a devida atenção recentemente. A purificação da lacase foi realizada a partir do basidiomiceto Lentinus strigosus em vários estágios: Etapa 1 - na cromatografia de troca iônica em TEAE Servacell 23 (400 ml), foram observados dois picos de atividade da lacase distintamente separados, com eluição do transportador a 0,21 e 0,27 M de NaCl. Para reduzir a perda de enzimas, todas as frações com atividade de lacase foram coletadas, concentradas e dessalinizadas em uma célula de ultrafiltração (Amicon, Estados Unidos) com membrana UM-10; Etapa 2 - a preparação resultante com atividade de lacase foi aplicada a uma coluna Q-Sepharose (60 ml). Durante a eluição, foram obtidos dois picos bem separados com atividade de lacase: lacase I (NaCl 0,12 M) e lacase II (NaCl 0,2 M); Etapa 3 - no decurso da purificação adicional de ambas as enzimas, realizada no Recurso Q de transportador de troca aniônica (6 ml), um gradiente quebrado foi usado: 0-10%, 10-20% e 20-100% com NaCl 1M; Etapa 4 - tanto a lacase I como a lacase II, obtidas após o Recurso Q, foram dessalinizadas e concentradas para 1 ml cada e aplicadas a uma coluna de filtração em gel Superdex 75. Como resultado, duas lacases foram obtidas de forma homogênea.

Screening, biochemical characterization and antibiotics resistance/susceptibility of bacteria isolated from native soil and water samples / Triagem, caracterização bioquímica e resistência/suscetibilidade a antibióticos de bactérias isoladas de amostras nativas de solo e água

The present study was conducted to isolate and characterize bacteria from water and soil sample taken from the Lahore Canal at different sites i.e. Mall Road, Mohlanwal and Khera site. Isolated bacterial strains were identified on the basis of morphological and biochemical tests. Identification was confirmed by culturing bacteria on selective media. Antibiotic resistance test was also performed to observe the resistance of bacteria against different antibiotics. Blood agar test was performed for identification of different pathogenic bacteria. The result revealed that water and soil samples of Lahore Canal Lahore from different sites were contaminated with Escherichia coli, Salmonella sp., Vibrio sp., Bacillus spp., Enterococcus sp. and Staphylococcus spp. Due to presence of these pathogens, this water is not suitable for any domestic and irrigation use. Study also revealed that water of the Lahore Canal is harmful for human health as it is contaminated with bacteria that can cause severe disease e.g., Escherichia coli can cause gastroenteritis, Bacillus spp. can cause nausea and vomiting, Enterococcus may infect urinary tract, Salmonella sp. is responsible for Bacteremia, Staphylococcus spp. can cause mild fever and Vibrio sp. can be the reason of cholera. Thus it is rendered unfit for any kind of human use even other than drinking like swimming, bathing, washing etc., until and unless some remedial measures are employed to eradicate pathogenic microorganisms by WASA and LWMS according to standards of WHO. Similarly, it is quite harmful, when and where ever it is used for irrigation without proper treatment.

O presente estudo foi realizado para isolar e caracterizar bactérias de amostras de água e solo retiradas do Canal Lahore, em Lahore, em diferentes locais, ou seja, Mall Road, Mohlanwal e Khera. As cepas bacterianas isoladas foram identificadas com base em testes morfológicos e bioquímicos. A identificação foi confirmada por cultura de bactérias em testes de meios seletivos. O teste de resistência aos antibióticos também foi realizado para observar a resistência das bactérias a diferentes antibióticos. Foi realizado o teste de ágar sangue para identificar diferentes bactérias patogênicas. O resultado revelou que amostras de água e solo do Canal Lahore, Lahore, de diferentes localidades estavam contaminadas com Escherichia coli, Salmonella sp., Vibrio sp., Bacillus spp., Enterococcus sp. e Staphylococcus spp. Por causa da presença desses patógenos, essa água não é adequada para qualquer uso doméstico e de irrigação. O estudo revelou que a água do Canal Lahore é prejudicial à saúde humana, pois está contaminada com bactérias que podem causar doenças graves, por exemplo: Escherichia coli pode ocasionar gastroenterite; Bacillus spp. pode causar náuseas e vômitos; Enterococcus sp. pode infectar o trato urinário; Salmonella sp. é responsável pela bacteremia; Staphylococcus spp. pode causar febre leve; e Vibrio sp. pode ser a razão da cólera. Assim, torna-se imprópria para uso humano, como natação, banho, lavagem etc., até que algumas medidas corretivas sejam empregadas para erradicar microrganismos patogênicos por WASA e LWMS de acordo com os padrões da OMS. Da mesma forma, é bastante prejudicial, quando usada para irrigação sem tratamento adequado.

Tracing probiotic producing bacterial species from gut of buffalo (Bubalus bubalis), South-East-Asia / Rastreando espécies bacterianas produtoras de probióticos de intestino de búfalo (Bubalus bubalis), sudeste da Ásia

Due to extensive application of antibiotics as growth promoters in animal feed, antimicrobial resistance has been increased. To overcome this challenge, rumen microbiologists search for new probiotics to improve the rate of livestock production. The present study was aimed to isolate and evaluate breed-specific lactic acid bacteria (LAB) as potential animal probiotics. The current study was conducted during 10 months from July 2020 to April 2021, in which a total of n=12 strains were isolated from different samples including milk, rumen, and feces of Nilli Ravi Buffaloes. These isolates were evaluated for their antimicrobial potential against common animal pathogens (Bacillus spp., E. coli, Staphylococcus aureus, Salmonella spp., Listeria spp.). All the isolates were identified using 16S rRNA gene sequencing and the phylogenetic analyses inferred that these strains showed close relations to the species of various genera; Enterococcus lactis, Pediococcus pentosaceus, Bacillus subtilis Weissella cibaria, Weissella soli, Bacillus tequilensis, Weissella bombi, Bacillus licheniformis, Lactococcus lactis, Bacillus megaterium, Lactobacillus ruminis, and Lactococcus lactis. NMCC-Ru2 has exhibited the enormous potential of antimicrobial activity, 28 mm, for Salmonella typhimurium;23 mm for Listeria monocytogenes 21 mm for E.coil. Highest resistance was seen in NMCC-Ru2 agasint test antbiotic, like 25.5 mm for Tetracycline. Overall results revesl that the probiotic profile of isolates was achieved using standard criteria, particularly with animal probiotic properties

Devido à extensa aplicação de antibióticos como promotores de crescimento na alimentação animal, a resistência aos antimicrobianos aumentou. Para superar esse desafio, os microbiologistas do rúmen buscam novos probióticos para melhorar a produtividade do gado. O presente estudo teve como objetivo isolar e avaliar bactérias lácticas específicas de raças (BAL) como potenciais probióticos animais. 12 cepas foram isoladas de diferentes amostras, incluindo leite, rúmen e fezes de búfalos Nilli Ravi. Esses isolados foram avaliados quanto ao seu potencial antimicrobiano contra patógenos animais comuns (Bacillus spp., E. coli, Staphylococcus aureus, Salmonella spp., Listeria spp.). Todos os isolados foram identificados por meio do sequenciamento do gene 16S rRNA e as análises filogenéticas inferiram que essas cepas apresentaram estreita relação com as espécies de vários gêneros; Enterococcus lactis, Pediococcus pentosaceus, Bacillus subtilis, Weissella cibaria, Weissella soli, Bacillus tequilensis, Weissella bombi, Bacillus licheniformis, Lactococcus lactis, Bacillus megaterium, Lactobacillus ruminis e Lactococcus lactis. O perfil probiótico dos isolados foi obtido usando critérios padrão, particularmente com propriedades probióticas animais.

Perfil das infecções relacionadas à assistência à saúde na unidade de terapia intensiva de um hospital de referência na mesorregião oeste do Rio Grande do Norte / Profile of health care-related infections in the intensive care unit of a reference hospital in the west mesoregion of Rio Grande do Norte / Perfil de las infecciones relacionadas con la atención a la salud en la unidad de cuidados intensivos de un hospital de referencia en la mesoregión oeste del Rio Grande del Norte

As Infecções Relacionadas à Assistência à Saúde (IRAS) ocorrem com mais frequência em Unidade de Terapia Intensiva (UTI) devido a exposição maior dos pacientes a procedimentos e dispositivos invasivos, quadro clínico debilitado e sua manipulação pela equipe assistencial exigindo uso elevado de antimicrobianos, o que pode promover um risco de desenvolvimento de resistência bacteriana a estes, cujas consequências podem ser a dificuldade de tratamento, internamento prolongado, risco de óbito e maior custo associado. Tem como objetivo descrever as IRAs relacionando os agentes etiológicos e o tratamento antimicrobiano em uma UTI de um hospital de referência da mesorregião do Rio Grande do Norte. Trata-se de um estudo descritivo, retrospectivo e transversal de abordagem quantitativa. Foram inseridos 1.682 pacientes internados na UTI geral do hospital estudado entre 2017-2020. Os dados foram coletados a partir de fichas de registro que foram tabuladas e analisadas nos softwares Microsoft Office Excel® e Statistical Package for the Social Sciences utilizando estatística descritiva simples com apresentação de frequências, tendências e dispersão. A análise dos resultados revelou mediana de idade de 57 anos, prevalência do sexo masculino e existência de comorbidades em 57,9% dos casos, especialmente infecção prévia a admissão na UTI. O tempo médio de permanência na UTI foi 11,4 dias e taxa de mortalidade de 52%. Quanto aos dispositivos invasivos, observou-se uso de sonda vesical de demora (96,8%), ventilação mecânica (79,4%) e cateter venoso central (83,7%). Constatou-se 790 IRAS da UTI com crescimento bacteriano em 48,2%. As principais densidades de incidência (DI) de IRAS/1.000 pacientes-dia foram: IPCSL-CVC 1,8; PAV 27 e ITU-AC 22,3. Quanto aos antibióticos, observou-se Lenght of therapy de 872,5/1.000 pacientes-dia, sendo os mais prescritos: vancomicina (N=633), meropenem (N=625), ceftriaxona (N=479), amicacina (N=463) e polimixina B (N=448). Os valores destaques de Days of therapy/1.000 pacientes-dia: meropenem (N=305,7), amicacina (N=260,4), polimixina B (N=256,4), vancomicina (N=229,3) e imipenem (N=165,3). As bactérias mais isoladas nas culturas foram: Acinetobacter spp., Pseudomonas spp. e Klebsiella spp., as quais apresentaram resistência, principalmente, a: ceftazidima (51,5% - 87,3%); cefepima (61,6% - 85,3%); ciprofloxacino (56% - 84,6%) e meropenem (31,7% - 80,3%). Identificou-se não conformidades no tratamento com antibióticos em 455 pacientes, que envolvem principalmente polimixina B, vancomicina, meropenem e ceftriaxona. Conclui-se que há elevados níveis de tempo de permanência na UTI e uso de dispositivos invasivos, assim como DI de IRAS alta com identificação microbiológica de bactérias importantes, especialmente por seu perfil de resistência acentuado com destaque para antibióticos da classe dos carbapenêmicos e cefalosporinas de 3a e 4a geração. Destaca-se também a presença de não conformidades na administração de antibióticos que podem contribuir para a seleção de bactérias multirresistentes.

Health Care-Related Infections (HAI) occur more frequently in the Intensive Care Unit (ICU) due to the greater exposure of patients to invasive procedures and devices, weakened clinical status and their handling by the care team, requiring high use of antimicrobials, which can promote a risk of developing bacterial resistance to these, whose consequences may be difficult treatment, prolonged hospitalization, risk of death and higher associated costs. It aims to describe the IRAS relating the etiological agents and antimicrobial treatment in an ICU of a reference hospital in the mesoregion of Rio Grande do Norte. This is a descriptive, retrospective and cross-sectional study with a quantitative approach. A total of 1,682 patients admitted to the general ICU of the hospital studied between 2017-2020 were included. Data were collected from registration forms that were tabulated and analyzed in Microsoft Office Excel® and Statistical Package for the Social Sciences software using simple descriptive statistics with presentation of frequencies, trends and dispersion. The analysis of the results revealed a median age of 57 years, prevalence of males and the existence of comorbidities in 57.9% of cases, especially infection prior to admission to the ICU. The average length of stay in the ICU was 11.4 days and the mortality rate was 52%. As for invasive devices, the use of an indwelling urinary catheter (96.8%), mechanical ventilation (79.4%) and central venous catheter (83.7%) was observed. There were 790 IRAS in the ICU with bacterial growth in 21.67%. The main HAI incidence densities (DI)/1,000 patient-days were: IPCSL-CVC 1.8; PAV 27 and UTI-AC 22.3. As for antibiotics, a Length of therapy of 872.5/1,000 patient-days was observed, with the most prescribed being: vancomycin (N=633), meropenem (N=625), ceftriaxone (N=479), amikacin (N= 463) and polymyxin B (N=448). The highlighted values of Days of therapy/1000 patient-days: meropenem (N=305.7), amikacin (N=260.4), polymyxin B (N=256.4), vancomycin (N=229.3) and imipenem (N=165.3). The most isolated bacteria in cultures were: Acinetobacter spp., Pseudomonas spp. and Klebsiella spp., which showed resistance mainly to: Ceftazidime (51.5% - 87.3%); cefepime (61.6% - 85.3%); ciprofloxacin (56% - 84.6%) and meropenem (31.7% - 80.3%). Non-compliance was identified in the treatment with antibiotics in 455 patients, which mainly involve polymyxin B, vancomycin, meropenem and ceftriaxone. It is concluded that there are high levels of ICU length of stay and use of invasive devices, as well as high IRAS ID with microbiological identification of important bacteria, especially due to their accentuated resistance profile, with emphasis on antibiotics from the carbapenem class and cephalosporins from 3rd and 4th generation. Also noteworthy is the presence of non-compliance in the administration of antibiotics that may contribute to the selection of multidrug-resistant bacteria.

Las Infecciones Relacionadas con la Atención de la Salud (IRAS) ocurren con mayor frecuencia en la Unidad de Cuidados Intensivos (UCI) debido a la mayor exposición de los pacientes a procedimientos y dispositivos invasivos, el debilitamiento del estado clínico y su manejo por parte del equipo asistencial, requiriendo un alto uso de antimicrobianos , lo que puede promover un riesgo de desarrollar resistencia bacteriana a estos, cuyas consecuencias pueden ser un tratamiento difícil, hospitalización prolongada, riesgo de muerte y mayores costos asociados. Tiene como objetivo describir las IRAs que relacionan los agentes etiológicos y el tratamiento antimicrobiano en una UTI de un hospital de referencia en la mesorregión de Rio Grande do Norte. Se trata de un estudio descriptivo, retrospectivo y transversal con enfoque cuantitativo. Se incluyeron un total de 1.682 pacientes ingresados en la UCI general del hospital estudiado entre 2017-2020. Los datos fueron recolectados a partir de formularios de registro que fueron tabulados y analizados en el software Microsoft Office Excel® y Statistical Package for the Social Sciences utilizando estadística descriptiva simple con presentación de frecuencias, tendencias y dispersión. El análisis de los resultados reveló una mediana de edad de 57 años, predominio del sexo masculino y la existencia de comorbilidades en el 57,9% de los casos, especialmente infección previa al ingreso en UCI. La estancia media en la UCI fue de 11,4 días y la tasa de mortalidad fue del 52%. En cuanto a los dispositivos invasivos, se observó el uso de catéter urinario permanente (96,8%), ventilación mecánica (79,4%) y catéter venoso central (83,7%). Había 790 IRAS en la UCI con crecimiento bacteriano en el 48,2%. Las principales densidades de incidencia (DI) de IRAS/1.000 pacientes-día fueron: IPCSL-CVC 1,8; PAV 27 y UTI-AC 22.3. En cuanto a los antibióticos, se observó una Duración de la terapia de 872,5/1.000 días-paciente, siendo los más prescritos: vancomicina (N=633), meropenem (N=625), ceftriaxona (N=479), amikacina (N= 463) y polimixina B (N=448). Los valores destacados de Días de terapia/1.000 pacientes-día: meropenem (N=305,7), amikacina (N=260,4), polimixina B (N=256,4), vancomicina (N=229,3) e imipenem (N=165,3). Las bacterias más aisladas en cultivos fueron: Acinetobacter spp., Pseudomonas spp. y Klebsiella spp., que mostraron resistencia principalmente a: ceftazidima (51,5% - 87,3%); cefepima (61,6% - 85,3%); ciprofloxacino (56% - 84,6%) y meropenem (31,7% - 80,3%). Se identificó incumplimiento en el tratamiento con antibióticos en 455 pacientes, los cuales involucran principalmente polimixina B, vancomicina, meropenem y ceftriaxona. Se concluye que existen altos índices de estancia en UCI y uso de dispositivos invasivos, así como elevado IRAS ID con identificación microbiológica de bacterias importantes, especialmente por su acentuado perfil de resistencia, con énfasis en antibióticos de la clase carbapenémicos y cefalosporinas de 3ra y 4ta generación. También es destacable la presencia de incumplimiento en la administración de antibióticos que pueden contribuir a la selección de bacterias multirresistentes.

Antibacterial activity of Ricinus communis plant extract against antibiotic resistant Helicobacter pylori and Gluconobacter oxydans isolated from fresh apple juices samples

Abstract Bacteria were isolated from samples of Fresh Apple juices from shops of three different localities of Lahore. Analysis of samples from Liberty, Anarkali and Yateem khana Markets show different levels of contamination. There were pathogenic and non-pathogenic bacteria in all samples and were identified by the morphological and biochemical tests. Most of the plasmids of pathogenic bacteria were 4kb in their molecular size. Ribotyping of 16S ribosomal RNA gene sequencing was done to confirm Helicobacter pylori strain and Gluconobacter oxydans. The highest sensitivity of 210mm was shown by Enterobacter sp. against Aztheromysine disk (15µg) while Micrococcus sp. was highly resistant against all of the Antibiotics applied. The antibiotic resistance of pathogenic bacteria was also checked against Ricinus communis plant's extracts, all isolated bacterial pathogens were resistant but only, E.coli was inhibited at 300µl of the extracts. Presence of pathogenic bacteria in Apple juice samples was due to contamination of sewage water in drinking water while some of these pathogenic bacteria came from Apple's tree and other from store houses of fruits.

Resumo As bactérias foram isoladas de amostras de suco de maçã fresco de lojas de três diferentes localidades de Lahore. A análise de amostras dos mercados Liberty, Anarkali e Yateem khana mostram diferentes níveis de contaminação. Havia bactérias patogênicas e não patogênicas em todas as amostras e foram identificadas pelos testes morfológicos e bioquímicos. A maioria dos plasmídeos de bactérias patogênicas tinha 4 kb em seu tamanho molecular. A ribotipagem do sequenciamento do gene do RNA ribossômico 16S foi realizada para confirmar a cepa de Helicobacter pylori e Gluconobacter oxydans. A maior sensibilidade de 210 mm foi mostrada por Enterobacter sp. contra disco de azteromisina (15µg) enquanto Micrococcus sp. foi altamente resistente a todos os antibióticos aplicados. A resistência a antibióticos de bactérias patogênicas também foi verificada contra extratos de plantas de Ricinus communis, todos os patógenos bacterianos isolados foram resistentes, mas apenas E. coli foi inibida em 300µl dos extratos. A presença de bactérias patogênicas nas amostras de suco de maçã deveu-se à contaminação da água de esgoto na água potável, enquanto algumas dessas bactérias patogênicas vieram da árvore da maçã e outras de armazéns de frutas.

Testing for the ability to modify antibiotics of Panus tigrinus 8/18 Lentinus strigosus 1566 laccase

Abstract In advanced biotechnology, the utilization of enzymes to achieve new or modified compounds with antibacterial, fungicidal, and anti-cancer specifications is crucial. Mushroom lactases are a hopeful biocatalyst for the synthesis and modification of different compounds. They are an accessible and inexpensive enzyme for the preparation of reaction objects and have recently received attention. Laccase purification was performed from basidiomycete Lentinus strigosus (LS) in several stages: Stage 1. On ion-exchange chromatography on TEAE Servacell 23 (400 ml), two distinctly separated laccase activity peaks were observed, eluted from the carrier at 0.21 and 0.27 M NaCl. In order to reduce the loss of enzymes, all fractions with laccase activity were collected, concentrated, and desalted using an ultrafiltration cell (Amicon, United States) with a UM-10 membrane. Stage 2. The resulting preparation with laccase activity was applied to a Q-Sepharose column (60 ml). Two well-separated peaks with laccase activity were obtained during the elution: laccase I (0.12 M NaCl) and laccase II (0.2 M NaCl). Stage 3. In the course of further purification of both enzymes, carried out on anion-exchange carrier Resource Q (6 ml), a broken gradient was used: 0 - 10%, 10 - 20%, and 20 - 100% with 1M NaCl. Stage 4. Both laccase I and laccase II, obtained after Resource Q, were desalted, concentrated to 1 ml each, and applied to a Superdex 75 gel filtration column. As a result, two laccases were obtained in a homogeneous form.

Resumo Na biotecnologia moderna, o uso de enzimas para obter compostos novos ou modificados com propriedades antibacterianas, antifúngicas e anticancerígenas é crucial. Lactases de cogumelos são biocatalisadores promissores para síntese e modificação de diferentes compostos, por serem enzimas baratas e disponíveis para a preparação de componentes de reação, e vem recebendo a devida atenção recentemente. A purificação da lacase foi realizada a partir do basidiomiceto Lentinus strigosus em vários estágios: Etapa 1 - na cromatografia de troca iônica em TEAE Servacell 23 (400 ml), foram observados dois picos de atividade da lacase distintamente separados, com eluição do transportador a 0,21 e 0,27 M de NaCl. Para reduzir a perda de enzimas, todas as frações com atividade de lacase foram coletadas, concentradas e dessalinizadas em uma célula de ultrafiltração (Amicon, Estados Unidos) com membrana UM-10; Etapa 2 - a preparação resultante com atividade de lacase foi aplicada a uma coluna Q-Sepharose (60 ml). Durante a eluição, foram obtidos dois picos bem separados com atividade de lacase: lacase I (NaCl 0,12 M) e lacase II (NaCl 0,2 M); Etapa 3 - no decurso da purificação adicional de ambas as enzimas, realizada no Recurso Q de transportador de troca aniônica (6 ml), um gradiente quebrado foi usado: 0-10%, 10-20% e 20-100% com NaCl 1M; Etapa 4 - tanto a lacase I como a lacase II, obtidas após o Recurso Q, foram dessalinizadas e concentradas para 1 ml cada e aplicadas a uma coluna de filtração em gel Superdex 75. Como resultado, duas lacases foram obtidas de forma homogênea.

Tracing probiotic producing bacterial species from gut of buffalo (Bubalus bubalis), South-East-Asia

Abstract Due to extensive application of antibiotics as growth promoters in animal feed, antimicrobial resistance has been increased. To overcome this challenge, rumen microbiologists search for new probiotics to improve the rate of livestock production. The present study was aimed to isolate and evaluate breed-specific lactic acid bacteria (LAB) as potential animal probiotics. The current study was conducted during 10 months from July 2020 to April 2021, in which a total of n=12 strains were isolated from different samples including milk, rumen, and feces of Nilli Ravi Buffaloes. These isolates were evaluated for their antimicrobial potential against common animal pathogens (Bacillus spp., E. coli, Staphylococcus aureus, Salmonella spp., Listeria spp.). All the isolates were identified using 16S rRNA gene sequencing and the phylogenetic analyses inferred that these strains showed close relations to the species of various genera; Enterococcus lactis, Pediococcus pentosaceus, Bacillus subtilis Weissella cibaria, Weissella soli, Bacillus tequilensis, Weissella bombi, Bacillus licheniformis, Lactococcus lactis, Bacillus megaterium, Lactobacillus ruminis, and Lactococcus lactis. NMCC-Ru2 has exhibited the enormous potential of antimicrobial activity, 28 mm, for Salmonella typhimurium;23 mm for Listeria monocytogenes 21 mm for E.coil. Highest resistance was seen in NMCC-Ru2 agasint test antbiotic, like 25.5 mm for Tetracycline. Overall results revesl that the probiotic profile of isolates was achieved using standard criteria, particularly with animal probiotic properties

Resumo Devido à extensa aplicação de antibióticos como promotores de crescimento na alimentação animal, a resistência aos antimicrobianos aumentou. Para superar esse desafio, os microbiologistas do rúmen buscam novos probióticos para melhorar a produtividade do gado. O presente estudo teve como objetivo isolar e avaliar bactérias lácticas específicas de raças (BAL) como potenciais probióticos animais. 12 cepas foram isoladas de diferentes amostras, incluindo leite, rúmen e fezes de búfalos Nilli Ravi. Esses isolados foram avaliados quanto ao seu potencial antimicrobiano contra patógenos animais comuns (Bacillus spp., E. coli, Staphylococcus aureus, Salmonella spp., Listeria spp.). Todos os isolados foram identificados por meio do sequenciamento do gene 16S rRNA e as análises filogenéticas inferiram que essas cepas apresentaram estreita relação com as espécies de vários gêneros; Enterococcus lactis, Pediococcus pentosaceus, Bacillus subtilis, Weissella cibaria, Weissella soli, Bacillus tequilensis, Weissella bombi, Bacillus licheniformis, Lactococcus lactis, Bacillus megaterium, Lactobacillus ruminis e Lactococcus lactis. O perfil probiótico dos isolados foi obtido usando critérios padrão, particularmente com propriedades probióticas animais.