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1.
Euro Surveill ; 28(15)2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-37052680

RESUMEN

Between November and December 2021, the first ever recorded outbreak of enteroinvasive Escherichia coli in Denmark occurred at national scale. We describe the investigation of this outbreak, which was initially recognised in early December 2021. A total of 88 cases (58 female; 30 male) with a median age of 52 years (range: 0-91) were detected by PCR-based diagnostic methods. Case ascertainment was complicated by current culture-free diagnostic procedures, with only 34 cases confirmed by culture, serotyping and whole genome sequencing. Isolates from cases grouped into two serotypes (O136:H7 and O96:H19), which was supported by whole-genome-sequence-phylogeny, also yielding two clusters. Interviews of 42 cases and traceback investigation pointed towards consumption of ready-to-eat salads as the outbreak cause. While the ready-to-eat salads comprised different vegetables, imported spring onions were the only common ingredient and thus the likely source. Environmental investigations failed to recover outbreak strains. This report highlights the value of fast typing (here O-typing) to confirm cases in an outbreak situation. Timely communication and data sharing are also important, and were facilitated by the national collaboration between relevant laboratories, the public health institute and the veterinary and food administration. High hygiene standards for imported fresh vegetables intended for ready-to-eat products are essential.


Asunto(s)
Infecciones por Escherichia coli , Escherichia coli , Masculino , Humanos , Femenino , Recién Nacido , Lactante , Preescolar , Niño , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/epidemiología , Cebollas , Verduras , Brotes de Enfermedades , Dinamarca/epidemiología
2.
Microbiol Spectr ; 9(2): e0046421, 2021 10 31.
Artículo en Inglés | MEDLINE | ID: mdl-34704795

RESUMEN

The objective of this study was to evaluate whether the addition of the Verigene BC-GN molecular rapid diagnostic test to standard antimicrobial stewardship practices (mRDT + ASP) decreased the time to optimal and effective antimicrobial therapy for patients with extended-spectrum beta-lactamase (ESBL)- and carbapenemase-producing Escherichia coli and Klebsiella pneumoniae bloodstream infections (BSI) compared to conventional microbiological methods with ASP (CONV + ASP). This was a multicenter, retrospective cohort study evaluating the time to optimal antimicrobial therapy in 5 years of patients with E. coli or K. pneumoniae BSI determined to be ESBL- or carbapenemase-producing by mRDT and/or CONV. Of the 378 patients included (mRDT + ASP, n = 164; CONV + ASP, n = 214), 339 received optimal antimicrobial therapy (mRDT + ASP, n = 161; CONV + ASP, n = 178), and 360 (mRDT + ASP, n = 163; CONV + ASP, n = 197) received effective antimicrobial therapy. The mRDT + ASP demonstrated a statistically significant decrease in the time to optimal antimicrobial therapy (20.5 h [interquartile range (IQR), 17.0 to 42.2 h] versus 50.1 h [IQR, 27.6 to 77.9 h]; P < 0.001) and the time to effective antimicrobial therapy (15.9 h [IQR, 1.9 to 25.7 h] versus 28.0 h [IQR, 9.5 to 56.7 h]; P < 0.001) compared to CONV + ASP, respectively. IMPORTANCE Our study supports the additional benefit of molecular rapid diagnostic test in combination with timely antimicrobial stewardship program (ASP) intervention on shortening the time to both optimal and effective antimicrobial therapy in patients with ESBL- or carbapenemase-producing Escherichia coli and Klebsiella pneumoniae bloodstream infections, compared to conventional microbiological methods and ASP. Gram-negative infections are associated with significant morbidity and mortality, often resulting in life-threatening organ dysfunction. Both resistance phenotypes confer resistance to many of our first-line antimicrobial agents with carbapenemase-producing Enterobacterales requiring novel beta-lactam and beta-lactamase inhibitor combinations or other susceptible non-beta-lactam antibiotics for treatment. National resistance trends in a cohort of hospitalized patients at U.S. hospitals during our study period demonstrate the increasing incidence of both resistance phenotypes, reinforcing the generalizability and timeliness of such analysis.


Asunto(s)
Antibacterianos/uso terapéutico , Bacteriemia/tratamiento farmacológico , Proteínas Bacterianas/metabolismo , Infecciones por Escherichia coli/tratamiento farmacológico , Escherichia coli/efectos de los fármacos , Infecciones por Klebsiella/tratamiento farmacológico , Klebsiella pneumoniae/efectos de los fármacos , beta-Lactamasas/metabolismo , Adulto , Anciano , Programas de Optimización del Uso de los Antimicrobianos , Bacteriemia/diagnóstico , Bacteriemia/microbiología , Proteínas Bacterianas/genética , Pruebas Diagnósticas de Rutina , Prescripciones de Medicamentos , Escherichia coli/enzimología , Escherichia coli/genética , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/microbiología , Femenino , Humanos , Infecciones por Klebsiella/diagnóstico , Infecciones por Klebsiella/microbiología , Klebsiella pneumoniae/enzimología , Klebsiella pneumoniae/genética , Klebsiella pneumoniae/aislamiento & purificación , Masculino , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Estudios Retrospectivos , beta-Lactamasas/genética
3.
Cornea ; 40(7): 831-836, 2021 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-32833847

RESUMEN

PURPOSE: To report the outcomes of using scleral contact lenses as antibiotic reservoirs as a therapeutic approach in a case series of severe infectious keratitis and to discuss the clinical potential. METHODS: This was a prospective consecutive case series study of 12 eyes treated for infectious keratitis at the "Conde de Valenciana" Institute of Ophthalmology. A scleral lens (SL) filled with 0.5% moxifloxacin was used as a reservoir and replaced every 24 hours until epithelization was complete or the culture report and/or antibiogram demonstrated either a microorganism not susceptible to or resistant to moxifloxacin. RESULTS: The study included 12 eyes of 12 patients (7 women; 58.33%; average age of 63 ± 20.11 years). All patients completed at least 1 month of follow-up. Patients had a diagnosis of infectious keratitis, and the SL was fitted on initial consultation. Of the 12 eyes, 7 had culture-positive bacterial infection, 2 eyes were mycotic, and 3 eyes had no culture growth. In 3 eyes, SL was discontinued because of the lack of response (one eye) and to the presence of mycotic infection (2 eyes). All infections resolved favorably at the final follow-up. CONCLUSIONS: The use of SLs could be an alternative for antibiotic impregnation and treatment of infectious keratitis. No complications or side effects were observed related to the use of the scleral contact lens as a reservoir for the antibiotic. This treatment modality could offer a comfortable treatment for the patient, ensuring good impregnation and maintenance of antibiotic concentrations during the 24-hour wear periods.


Asunto(s)
Antibacterianos/administración & dosificación , Lentes de Contacto , Úlcera de la Córnea/tratamiento farmacológico , Portadores de Fármacos/administración & dosificación , Infecciones Bacterianas del Ojo/tratamiento farmacológico , Infecciones Fúngicas del Ojo/tratamiento farmacológico , Moxifloxacino/administración & dosificación , Adulto , Anciano , Anciano de 80 o más Años , Aspergilosis/tratamiento farmacológico , Aspergilosis/microbiología , Úlcera de la Córnea/diagnóstico , Úlcera de la Córnea/microbiología , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/microbiología , Infecciones Bacterianas del Ojo/diagnóstico , Infecciones Bacterianas del Ojo/microbiología , Infecciones Fúngicas del Ojo/microbiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Infecciones por Pseudomonas/diagnóstico , Infecciones por Pseudomonas/tratamiento farmacológico , Infecciones por Pseudomonas/microbiología , Esclerótica , Infecciones Estafilocócicas/diagnóstico , Infecciones Estafilocócicas/tratamiento farmacológico , Infecciones Estafilocócicas/microbiología , Agudeza Visual , Adulto Joven
4.
Microbiologyopen ; 8(12): e941, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31573735

RESUMEN

Pivmecillinam (amdinocillin pivoxil) is the recommended first-choice antibiotic used to treat urinary tract infections (UTIs) in Denmark. The frequency of mutation to mecillinam (MEC) resistance is described as high in vitro; however, treatment of UTI has a good clinical response and prevalence of mecillinam resistance in Escherichia coli remains low despite many years of use. We describe occurrence of in vivo mecillinam resistance in a clinical isolate of ESBL-producing E. coli following pivmecillinam treatment. The identified phenotypic differences in the mecillinam resistant isolate compared with the original mecillinam susceptible isolate were a full-length LPS with O-antigen (O25), mecillinam resistance and a lower MIC for ceftazidime. Regarding genotype, the resistant isolate differed with a mutation in blaCTX-M-15 to blaCTX-M-127 , loss of a part of a plasmid and a genomic island, respectively, and insertion of a transposase in wbbL, causing the rough phenotype. The observed mecillinam resistance is expected to be caused by the mutation in blaCTX-M-15 with additional contribute from the serotype shift. We continue to recommend the use of pivmecillinam as first-line treatment for UTI.


Asunto(s)
Amdinocilina Pivoxil/uso terapéutico , Amdinocilina/farmacología , Farmacorresistencia Bacteriana , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/microbiología , Escherichia coli/efectos de los fármacos , Escherichia coli/genética , beta-Lactamasas/genética , Amdinocilina Pivoxil/farmacología , Escherichia coli/clasificación , Infecciones por Escherichia coli/diagnóstico , Genoma Bacteriano , Genómica/métodos , Humanos , Pruebas de Sensibilidad Microbiana , Tipificación de Secuencias Multilocus , Mutación , Filogenia , Secuenciación Completa del Genoma
5.
BMJ Case Rep ; 12(2)2019 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-30737323

RESUMEN

Wernicke's encephalopathy (WE) is an uncommon neurological complication in pregnancies complicated with hyperemesis due to thiamine deficiency. In women with hyperemesis, inadvertent glucose administration prior to thiamine supplementation triggers the development of neurological manifestations. Delay in the diagnosis can lead to maternal morbidity, and in one-third of cases may lead to persistence of some neurological deficit. With early recognition and thiamine supplementation, complete recovery is reported. We report a case of WE complicating a case of triplet pregnancy with hyperemesis gravidarum, which highlights the importance of early recognition and treatment, resulting in complete recovery as in the index case.


Asunto(s)
Infecciones por Escherichia coli/diagnóstico , Hiperemesis Gravídica/complicaciones , Recien Nacido Extremadamente Prematuro , Enfermedades del Prematuro/mortalidad , Tiamina/uso terapéutico , Encefalopatía de Wernicke/diagnóstico , Amicacina/uso terapéutico , Antibacterianos/uso terapéutico , Infecciones por Escherichia coli/fisiopatología , Infecciones por Escherichia coli/terapia , Femenino , Fluidoterapia , Humanos , Hiperemesis Gravídica/fisiopatología , Hiperemesis Gravídica/terapia , Embarazo , Embarazo Triple , Deficiencia de Tiamina/fisiopatología , Deficiencia de Tiamina/terapia , Resultado del Tratamiento , Encefalopatía de Wernicke/tratamiento farmacológico , Encefalopatía de Wernicke/etiología , Adulto Joven
6.
Br J Biomed Sci ; 75(1): 24-29, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29210602

RESUMEN

BACKGROUND: As many clinical laboratories convert between Stokes, Clinical and Laboratory Standards Institute (CLSI) and European Committee for Antimicrobial Susceptibility Testing (EUCAST) methods, the problem of comparing differently derived sets of antimicrobial susceptibility testing (AST) data with each other arises, owing to a scarcity of knowledge of inter-method comparability. The purpose of the current study was to determine the comparability of CLSI, EUCAST and Stokes AST methods for determining susceptibility of uropathogenic Escherichia coli to ampicillin, amoxicillin-clavulanate, trimethoprim, cephradine/cephalexin, ciprofloxacin and nitrofurantoin. METHODS: A total of 100 E. coli isolates were obtained from boric acid urine samples from patients attending GP surgeries. For EUCAST and CLSI, the Kirby-Bauer disc diffusion method was used and results interpreted using the respective breakpoint guidelines. For the Stokes method, direct susceptibility testing was performed on the urine samples. RESULTS: The lowest levels of agreement were for amoxicillin-clavulanate (60%) and ciprofloxacin (89%) between the three AST methods, when using 2017 interpretive guidelines for CLSI and EUCAST. A comparison of EUCAST and CLSI without Stokes showed 82% agreement for amoxicillin-clavulanate and 94% agreement for ciprofloxacin. Discrepancies were compounded by varying breakpoint susceptibility guidelines issued during the period 2011-2017, and through the inclusion of a definition of intermediate susceptibility in some cases. CONCLUSIONS: Our data indicate that the discrepancies generated through using different AST methods and different interpretive guidelines may result in confusion and inaccuracy when prescribing treatment for urinary tract infection.


Asunto(s)
Antibacterianos/uso terapéutico , Bacteriuria/tratamiento farmacológico , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones Urinarias/tratamiento farmacológico , Escherichia coli Uropatógena/efectos de los fármacos , Combinación Amoxicilina-Clavulanato de Potasio/uso terapéutico , Ampicilina/uso terapéutico , Bacteriuria/diagnóstico , Bacteriuria/microbiología , Cefalexina/uso terapéutico , Cefradina/uso terapéutico , Ciprofloxacina/uso terapéutico , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/microbiología , Humanos , Pruebas de Sensibilidad Microbiana/normas , Nitrofurantoína/uso terapéutico , Guías de Práctica Clínica como Asunto , Trimetoprim/uso terapéutico , Infecciones Urinarias/diagnóstico , Infecciones Urinarias/microbiología , Escherichia coli Uropatógena/crecimiento & desarrollo , Escherichia coli Uropatógena/aislamiento & purificación
7.
Int Urol Nephrol ; 50(1): 21-24, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29170899

RESUMEN

PURPOSE: To determine the clinical utility of preoperative urine cultures in asymptomatic men undergoing prostate needle biopsy (PNB). METHODS: One hundred fifty asymptomatic men had urine cultures obtained 14-days prior to PNB. As per study protocol, positive cultures were not treated. Antibiotic prophylaxis prior to PNB included ciprofloxacin 500 mg the night before and morning of the biopsy. Repeat urine cultures were obtained immediately prior to PNB with colony-forming units (CFUs) annotated. Infectious complications post-biopsy were recorded. RESULTS: Of the 150 men, six patients (4%) had evidence of asymptomatic bacteriuria with > 10,000 CFU/mL on office urine culture. Repeat urine cultures on morning of biopsy in all 150 patients noted a mean bacterial count of 55 CFU/mL (range 0-1000). All six patients with positive office urine cultures had < 100 CFU/mL at time of PNB. Following biopsy, four patients (2.7%) developed an infectious complication including two with sepsis and two with culture-positive UTIs. The causative organism in all cases was quinolone-resistant E. coli. None of the six patients with preoperative positive urine cultures developed an infectious complication following PNB. CONCLUSIONS: In this prospective observational study, under 5% of asymptomatic men had positive office cultures prior to PNB. Furthermore, repeat urine culture on the morning of biopsy showed resolution in these patients, and none developed post-biopsy infectious complications. Routine office urine culture in the asymptomatic male prior to PNB was unnecessary.


Asunto(s)
Antibacterianos/uso terapéutico , Profilaxis Antibiótica , Bacteriuria/diagnóstico , Ciprofloxacina/uso terapéutico , Próstata/patología , Sepsis/etiología , Infecciones Urinarias/etiología , Anciano , Enfermedades Asintomáticas , Bacteriuria/microbiología , Biopsia con Aguja/efectos adversos , Recuento de Colonia Microbiana , Infecciones por Escherichia coli/complicaciones , Infecciones por Escherichia coli/diagnóstico , Humanos , Infecciones por Klebsiella/complicaciones , Infecciones por Klebsiella/diagnóstico , Masculino , Persona de Mediana Edad , Periodo Preoperatorio , Estudios Prospectivos , Sepsis/microbiología , Urinálisis , Infecciones Urinarias/microbiología , Orina/microbiología
8.
Euro Surveill ; 22(16)2017 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-28449732

RESUMEN

We describe three cases of bloodstream infection caused by colistin-resistant Escherichia coli in patients in a tertiary hospital in Italy, between August 2016 and January 2017. Whole genome sequencing detected the mcr-1 gene in three isolated strains belonging to different sequence types (STs). This occurrence of three cases with mcr-1-positive E. coli belonging to different STs in six months suggests a widespread problem in settings where high multidrug resistance is endemic such as in Italy.


Asunto(s)
Antibacterianos/uso terapéutico , Infecciones por Escherichia coli/tratamiento farmacológico , Proteínas de Escherichia coli/genética , Escherichia coli/efectos de los fármacos , Escherichia coli/genética , Tienamicinas/uso terapéutico , Anciano , Anciano de 80 o más Años , Farmacorresistencia Bacteriana/genética , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/microbiología , Femenino , Humanos , Italia , Meropenem , Pruebas de Sensibilidad Microbiana , Tipificación Molecular , Análisis de Secuencia de ADN , Resultado del Tratamiento
10.
Pediatr Int ; 59(2): 176-180, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27501161

RESUMEN

BACKGROUND: This study investigated risk factors of childhood urinary tract infection (UTI) associated with extended-spectrum ß-lactamase (ESBL)-producing bacteria (ESBL-positive UTI) and evaluated antimicrobial resistance as well as empiric treatment of childhood UTI. METHODS: The records of children with positive urine culture between 1 January 2008 and 31 December 2012 were evaluated. Patients with positive urine culture for ESBL-producing bacteria were defined as the ESBL-positive group, whereas patients of the same gender and similar age with positive urine culture for non-ESBL-producing bacteria were defined as the ESBL-negative group. Each ESBL-positive patient was matched with two ESBL-negative patients. RESULTS: The ESBL-positive and negative groups consisted of 154 and 308 patients, respectively. Potential risk factors for ESBL-positive UTI were identified as presence of underlying disease, clean intermittent catheterization (CIC), hospitalization, use of any antibiotic and history of infection in the last 3 months (P < 0.05). On logistic regression analysis, CIC, hospitalization and history of infection in the last 3 months were identified as independent risk factors. In the present study, 324 of 462 patients had empiric therapy. Empiric therapy was inappropriate in 90.3% of the ESBL-positive group and in 4.5% of the ESBL-negative group. Resistance to nitrofurantoin was similar between groups (5.1% vs 1.2%, P = 0.072); resistance to amikacin was low in the ESBL-positive group (2.6%) and there was no resistance in the ESBL-negative group. CONCLUSIONS: Clean intermittent catheterization, hospitalization and history of infection in the last 3 months should be considered as risk factors for ESBL-positive UTI. The combination of ampicillin plus amikacin should be taken into consideration for empiric therapy in patients with acute pyelonephritis who have the risk factors for ESBL-positive UTI. Nitrofurantoin seems to be a logical choice for the empiric therapy of cystitis.


Asunto(s)
Antibacterianos/uso terapéutico , Infecciones por Escherichia coli/microbiología , Infecciones por Klebsiella/microbiología , Infecciones Urinarias/microbiología , Resistencia betalactámica , Estudios de Casos y Controles , Niño , Preescolar , Quimioterapia Combinada , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/etiología , Femenino , Humanos , Infecciones por Klebsiella/diagnóstico , Infecciones por Klebsiella/tratamiento farmacológico , Infecciones por Klebsiella/etiología , Modelos Logísticos , Masculino , Pruebas de Sensibilidad Microbiana , Estudios Retrospectivos , Factores de Riesgo , Infecciones Urinarias/diagnóstico , Infecciones Urinarias/tratamiento farmacológico , Infecciones Urinarias/etiología
11.
J Clin Res Pediatr Endocrinol ; 8(3): 325-9, 2016 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-27180947

RESUMEN

OBJECTIVE: Cathelicidin is an important antimicrobial peptide in the urinary tract. Cathelicidin expression is strongly stimulated by 1,25-dihydroxy vitamin D in epithelial cells, macrophages/monocytes, and neutrophils. Vitamin D and cathelicidin status in children with urinary tract infection (UTI) caused by Escherichia coli is unknown. To establish the relationship between serum vitamin D and urine cathelicidin levels in children with a UTI caused by Escherichia coli. METHODS: Serum 25-hydroxy vitamin D and urine cathelicidin levels were measured in 36 patients with UTI (mean age 6.8±3.6 years, range: 0.25-12.6 years) and 38 controls (mean age 6.3±2.8 years, range: 0.42-13 years). RESULTS: There were no significant differences in urine cathelicidin levels between the study and control groups (p>0.05). Eight (22.2%) patients in the study group and 21 (58.3%) children in the control group were found to have sufficient vitamin D (≥20 ng/mL). Patients with sufficient vitamin D had higher urine cathelicidin levels than the controls with sufficient vitamin D (respectively 262.5±41.1 vs. 168±31.6 ng/mL, p=0.001). There were no significant differences between the patients and controls with insufficient vitamin D (p>0.05). CONCLUSION: The children with vitamin D insufficiency may not be able to increase their urine cathelicidin level during UTI caused by Escherichia coli. There is a need of prospective studies in order to prove a beneficial effect of vitamin D supplementation for the restoration of cathelicidin stimulation and consequently for prevention of UTI recurrence.


Asunto(s)
Péptidos Catiónicos Antimicrobianos/orina , Infecciones por Escherichia coli/diagnóstico , Infecciones Urinarias/diagnóstico , Vitamina D/análogos & derivados , Adolescente , Niño , Preescolar , Estudios Transversales , Ensayo de Inmunoadsorción Enzimática , Infecciones por Escherichia coli/sangre , Infecciones por Escherichia coli/orina , Femenino , Humanos , Lactante , Masculino , Estudios Prospectivos , Infecciones Urinarias/sangre , Infecciones Urinarias/orina , Vitamina D/sangre , Catelicidinas
12.
Int J Antimicrob Agents ; 47(6): 486-9, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27211827

RESUMEN

Because of the high prevalence of amoxicillin resistance among uropathogens, amoxicillin is not recommended as an empirical treatment of urinary tract infections (UTIs). Quick detection of an amoxicillin-susceptible Escherichia coli (ASEC) would allow prescribing amoxicillin without preliminary broad-spectrum empirical treatment in uncomplicated pyelonephritis. To quickly diagnose UTIs due to ASEC, we developed a real-time PCR that detects in fresh uncultured urine the E. coli-specific gene yccT as well as the blaTEM and blaCTX-M genes. The ASEC rapid test was considered positive if the PCR was positive for the yccT gene but negative for blaTEM and blaCTX-M. The test was compared with culture and susceptibility testing. Among 200 patients with a suspected community-acquired UTI, 61 (30.5%) had a monobacterial UTI due to ASEC. The ASEC rapid test result was obtained in 3 h 13 [95% confidence interval (CI) 3 h 12-3 h 15] and was positive for 43 patients (21.5%). Specificity and sensitivity were 97.8% (95% CI 95.8-99.8%) and 65.6% (95% CI 59.0-72.1%), respectively. Positive and negative predictive values were 93.0% (95% CI 89.5-96.5%) and 86.6% (95% CI 81.9-91.3%), respectively. Owing to its high specificity and positive predictive value, the ASEC rapid test allows the diagnosis of UTI due to ASEC only 3 h after urine sampling. A positive ASEC rapid test may be used to treat uncomplicated pyelonephritis with amoxicillin from the start, without preliminary broad-spectrum empirical treatment. The ASEC rapid test is a promising tool to spare fluoroquinolones and third-generation cephalosporins in UTIs.


Asunto(s)
Amoxicilina/farmacología , Antibacterianos/farmacología , Infecciones Comunitarias Adquiridas/diagnóstico , Infecciones por Escherichia coli/diagnóstico , Escherichia coli/efectos de los fármacos , Pruebas de Sensibilidad Microbiana/métodos , Pielonefritis/diagnóstico , Adulto , Anciano , Infecciones Comunitarias Adquiridas/tratamiento farmacológico , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/tratamiento farmacológico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Pielonefritis/tratamiento farmacológico , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Sensibilidad y Especificidad , Factores de Tiempo
13.
Korean J Intern Med ; 31(1): 156-61, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26767869

RESUMEN

BACKGROUND/AIMS: The number of urinary tract infections (UTIs) caused by extended-spectrum ß-lactamase-producing Escherichia coli (ESBL-EC) is increasing. In an outpatient setting, there are limited therapeutic options to treat ESBL-producing pathogens. We evaluated the outcomes of amikacin outpatient parenteral antibiotic therapy (OPAT) for UTIs caused by ESBL-EC in patients not pre-treated with carbapenem. METHODS: We retrospectively evaluated the outcomes of amikacin OPAT for UTIs caused by ESBL-EC. RESULTS: From November 2011 to October 2012, eight females, who could not be hospitalized for carbapenem treatment, were treated with amikacin OPAT for nine episodes of non-bacteremic ESBL-EC UTIs. Seven of the eight patients had one or more comorbidities. Of the nine UTI cases, three had symptomatic lower UTIs and six had non-bacteremic upper UTIs. In all of the cases, symptomatic and laboratory improvements were observed following amikacin OPAT. One patient showed a delayed relapse with bilateral microabscesses 3 weeks after treatment cessation; however, a clinical and microbiological cure was eventually reached. All of the patients were able to tolerate amikacin OPAT without any significant nephrotoxicity or ototoxicity. CONCLUSIONS: Amikacin OPAT represents a feasible therapeutic option for non-bacteremic UTIs caused by ESBL-EC in settings with limited resources.


Asunto(s)
Amicacina/uso terapéutico , Infecciones por Escherichia coli/tratamiento farmacológico , Escherichia coli/efectos de los fármacos , Infecciones Urinarias/tratamiento farmacológico , Inhibidores de beta-Lactamasas/uso terapéutico , beta-Lactamasas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Atención Ambulatoria , Amicacina/administración & dosificación , Amicacina/efectos adversos , Esquema de Medicación , Escherichia coli/enzimología , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/microbiología , Infecciones por Escherichia coli/orina , Humanos , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Recurrencia , Inducción de Remisión , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Urinálisis , Infecciones Urinarias/diagnóstico , Infecciones Urinarias/microbiología , Infecciones Urinarias/orina , Orina/microbiología , Inhibidores de beta-Lactamasas/administración & dosificación , Inhibidores de beta-Lactamasas/efectos adversos
14.
Korean J Intern Med ; 31(1): 145-55, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26767868

RESUMEN

BACKGROUND/AIMS: Efforts to decrease the use of extended-spectrum cephalosporins are required to prevent the selection and transmission of multi-drug resistant pathogens, such as extended-spectrum ß-lactamase (ESBL)-producing Enterobacteriaceae. The objectives of this study were to assess the clinical efficacy of intravenous cefuroxime as an empirical antibiotic for the treatment of hospitalized women with acute pyelonephritis (APN) caused by Escherichia coli. METHODS: We analyzed the clinical and microbiologic database of 328 hospitalized women with community-onset APN. RESULTS: Of 328 women with APN, 22 patients had cefuroxime-resistant E. coli APN, and 306 patients had cefuroxime-susceptible E. coli APN. The early clinical success rates were significantly higher (p = 0.001) in the cefuroxime-susceptible group (90.8%, 278/306) than in the cefuroxime-resistant group (68.2%, 15/22) at 72 hours. The clinical cure rates at 4 to 14 days after completing antimicrobial therapy were not significantly different in the cefuroxime-resistant or -susceptible groups, with 88.2% (15/17) and 97.8% (223/228; p = 0.078), respectively. The microbiological cure rates were not significantly different and were 90.9% (10/11) and 93.4% (128/137), respectively (p = 0.550). The median duration of hospitalization in the cefuroxime-resistant and -susceptible groups was 10 days (interquartile range [IQR], 8 to 13) and 10 days (IQR, 8 to 14), respectively (p =0.319). CONCLUSIONS: Cefuroxime, a second-generation cephalosporin, can be used for the initial empirical therapy of community-onset APN if tailored according to uropathogen identification and susceptibility results, especially in areas where the prevalence rate of ESBL-producing uropathogens is low.


Asunto(s)
Antibacterianos/uso terapéutico , Cefuroxima/uso terapéutico , Infecciones Comunitarias Adquiridas/tratamiento farmacológico , Farmacorresistencia Bacteriana , Infecciones por Escherichia coli/tratamiento farmacológico , Escherichia coli/efectos de los fármacos , Pielonefritis/tratamiento farmacológico , Infecciones Urinarias/tratamiento farmacológico , Administración Intravenosa , Anciano , Antibacterianos/administración & dosificación , Antibacterianos/efectos adversos , Cefuroxima/administración & dosificación , Cefuroxima/efectos adversos , Infecciones Comunitarias Adquiridas/diagnóstico , Infecciones Comunitarias Adquiridas/microbiología , Infecciones Comunitarias Adquiridas/orina , Bases de Datos Factuales , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/microbiología , Infecciones por Escherichia coli/orina , Femenino , Hospitalización , Humanos , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Pielonefritis/diagnóstico , Pielonefritis/microbiología , Pielonefritis/orina , Inducción de Remisión , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Urinálisis , Infecciones Urinarias/diagnóstico , Infecciones Urinarias/microbiología , Infecciones Urinarias/orina , Orina/microbiología
15.
Expert Rev Anti Infect Ther ; 14(2): 193-206, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26641310

RESUMEN

Diarrhoea is one of the most commonly occurring diseases. This article presents a review of the current state of the treatment of acute infectious diarrhoea, as well as of the most important pathogens. The general principles of the therapy of diarrhoea are exemplified, followed by a description of the targeted antimicrobial therapy of the most important bacterial gastrointestinal infections, including salmonellosis, shigellosis and Campylobacter infections, as well as infections with pathogenic Escherichia coli strains, yersiniosis and cholera. Diarrhoea caused by toxigenic Clostridium difficile strains has increased in incidence and in severity. These infections will therefore be described in detail, including important new aspects of treatment. Symptomatic therapy is still the most important component of the treatment of infectious diarrhoea. However, empirical antibiotic therapy should be considered for severely ill patients with a high frequency of stools, fever, bloody diarrhoea, underlying immune deficiency, advanced age or significant comorbidities. Increasing resistance, in particular against fluoroquinolones, must be taken into consideration. Therapy with motility inhibitors is not recommended for Shiga toxin-producing Escherichia coli (STEC) infections, Clostridium difficile infections (CDI), and severe colitis. The macrocyclic antibiotic fidaxomicin can reduce the rate of recurrent disease in CDI. Furthermore, evidence for the benefits of faecal microbiota transplantation as a treatment option for multiple recurrences of CDI is increasing. In conclusion, the treatment of acute diarrhoea is still primarily supportive. General empirical antibiotic therapy for acute diarrhoea is not evidence-based.


Asunto(s)
Antibacterianos/uso terapéutico , Infecciones Bacterianas/tratamiento farmacológico , Diarrea/tratamiento farmacológico , Gastroenteritis/tratamiento farmacológico , Enfermedad Aguda , Aminoglicósidos/uso terapéutico , Azitromicina/uso terapéutico , Infecciones Bacterianas/diagnóstico , Infecciones por Campylobacter/diagnóstico , Infecciones por Campylobacter/tratamiento farmacológico , Cólera/diagnóstico , Cólera/tratamiento farmacológico , Ciprofloxacina/uso terapéutico , Disbiosis/inducido químicamente , Disentería Bacilar/diagnóstico , Disentería Bacilar/tratamiento farmacológico , Enterocolitis Seudomembranosa/diagnóstico , Enterocolitis Seudomembranosa/tratamiento farmacológico , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/tratamiento farmacológico , Fidaxomicina , Humanos , Rifamicinas/uso terapéutico , Rifaximina , Infecciones por Salmonella/diagnóstico , Infecciones por Salmonella/tratamiento farmacológico , Escherichia coli Shiga-Toxigénica , Yersiniosis/diagnóstico , Yersiniosis/tratamiento farmacológico
16.
Artículo en Inglés | WPRIM | ID: wpr-220491

RESUMEN

BACKGROUND/AIMS: The number of urinary tract infections (UTIs) caused by extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-EC) is increasing. In an outpatient setting, there are limited therapeutic options to treat ESBL-producing pathogens. We evaluated the outcomes of amikacin outpatient parenteral antibiotic therapy (OPAT) for UTIs caused by ESBL-EC in patients not pre-treated with carbapenem. METHODS: We retrospectively evaluated the outcomes of amikacin OPAT for UTIs caused by ESBL-EC. RESULTS: From November 2011 to October 2012, eight females, who could not be hospitalized for carbapenem treatment, were treated with amikacin OPAT for nine episodes of non-bacteremic ESBL-EC UTIs. Seven of the eight patients had one or more comorbidities. Of the nine UTI cases, three had symptomatic lower UTIs and six had non-bacteremic upper UTIs. In all of the cases, symptomatic and laboratory improvements were observed following amikacin OPAT. One patient showed a delayed relapse with bilateral microabscesses 3 weeks after treatment cessation; however, a clinical and microbiological cure was eventually reached. All of the patients were able to tolerate amikacin OPAT without any significant nephrotoxicity or ototoxicity. CONCLUSIONS: Amikacin OPAT represents a feasible therapeutic option for non-bacteremic UTIs caused by ESBL-EC in settings with limited resources.


Asunto(s)
Adulto , Anciano , Anciano de 80 o más Años , Humanos , Persona de Mediana Edad , Atención Ambulatoria , Amicacina/administración & dosificación , Esquema de Medicación , Escherichia coli/efectos de los fármacos , Infecciones por Escherichia coli/diagnóstico , Pruebas de Sensibilidad Microbiana , Recurrencia , Inducción de Remisión , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Urinálisis , Infecciones Urinarias/diagnóstico , Orina/microbiología , Inhibidores de beta-Lactamasas/administración & dosificación , beta-Lactamasas/metabolismo
17.
Clin Lab ; 61(8): 941-50, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26427137

RESUMEN

BACKGROUND: The aim of this study is to detect the presence of and possible relation between virulence genes and antibiotic resistance in E. coli strains isolated from patients with acute, uncomplicated urinary tract infections (UTI). METHODS: 62 E. coli strains isolated from patients with acute, uncomplicated urinary tract infections (50 strains isolated from acute uncomplicated cystitis cases (AUC); 12 strains from acute uncomplicated pyelonephritis cases (AUP)) were screened for virulence genes [pap (pyelonephritis-associated pili), sfa/foc (S and F1C fimbriae), afa (afimbrial adhesins), hly (hemolysin), cnf1 (cytotoxic necrotizing factor), aer (aerobactin), PAI (pathogenicity island marker), iroN (catecholate siderophore receptor), ompT (outer membrane protein T), usp (uropathogenic specific protein)] by PCR and for antimicrobial resistance by disk diffusion method according to CLSI criteria. RESULTS: It was found that 56 strains (90.3%) carried at least one virulence gene. The most common virulence genes were ompT (79%), aer (51.6%), PAI (51.6%) and usp (56.5%). 60% of the strains were resistant to at least one antibiotic. The highest resistance rates were against ampicillin (79%) and co-trimoxazole (41.9%). Fifty percent of the E. coli strains (31 strains) were found to be multiple resistant. Eight (12.9%) out of 62 strains were found to be ESBL positive. Statistically significant relationships were found between the absence of usp and AMP - SXT resistance, iroN and OFX - CIP resistance, PAI and SXT resistance, cnf1 and AMP resistance, and a significant relationship was also found between the presence of the afa and OFX resistance. CONCLUSIONS: No difference between E. coli strains isolated from two different clinical presentations was found in terms of virulence genes and antibiotic susceptibility.


Asunto(s)
Antibacterianos/uso terapéutico , Proteínas Bacterianas/genética , Farmacorresistencia Bacteriana Múltiple/genética , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/microbiología , Escherichia coli/efectos de los fármacos , Escherichia coli/genética , Infecciones Urinarias/tratamiento farmacológico , Infecciones Urinarias/microbiología , Factores de Virulencia/genética , Enfermedad Aguda , Escherichia coli/clasificación , Escherichia coli/aislamiento & purificación , Escherichia coli/patogenicidad , Infecciones por Escherichia coli/diagnóstico , Infecciones por Escherichia coli/orina , Humanos , Pruebas de Sensibilidad Microbiana , Infecciones Urinarias/diagnóstico , Infecciones Urinarias/orina , Orina/microbiología , Virulencia
20.
Acta pediatr. esp ; 72(11): e939-e399, dic. 2014. tab, ilus
Artículo en Español | IBECS | ID: ibc-131532

RESUMEN

La linfangiectasia intestinal primaria es una malformación congénita de los vasos linfáticos subserosos asociada a una enteropatía pierde-proteínas. La obstrucción del drenaje linfático del intestino origina una rotura de los vasos linfáticos intestinales con salida de linfa hacia la luz intestinal, lo que causa edemas por hipoproteinemia, inmunodeficiencia por hipogammaglobulinemia, linfopenia y esteatorrea. Presentamos el caso clínico de un lactante de 6 meses con infecciones graves, hipoalbuminemia, edemas y esteatorrea, en el que se confirmó el diagnóstico de linfangiectasia intestinal por biopsia intestinal y se descartó una causa desencadenante mediante otras pruebas complementarias (AU)


Primary intestinal lymphangiectasia is a congenital malformation of the subserosal lymph vessels associated to a protein-losing enteropathy. The obstruction of the lymphatic drainage of the intestine leads to a rupture of the intestinal lymph vessels in which the lymph spreads to the intestinal lumen, which causes hypoproteinemia-related edemas, hypogammaglobulinemia-related immunodeficiency, lymphocytopenia and steatorrhea. We present a clinical case of a lactating 6-months old infant with severe infections, hypoalbuminemia, edemas and steatorrhea in which an intestinal biopsy confirmed the diagnosis of intestinal lymphangiectasia and a triggering cause was ruled out with other complementary tests (AU)


Asunto(s)
Humanos , Masculino , Lactante , Linfangiectasia Intestinal/complicaciones , Linfangiectasia Intestinal/diagnóstico , Hipoalbuminemia/complicaciones , Enteropatías Perdedoras de Proteínas/complicaciones , Enteropatías Perdedoras de Proteínas/diagnóstico , Dietoterapia , Grasas de la Dieta/uso terapéutico , Inmunoglobulinas Intravenosas/metabolismo , Inmunoglobulinas Intravenosas/uso terapéutico , Vasos Linfáticos/anomalías , Esteatorrea/complicaciones , Linfangiectasia Intestinal/etiología , Hipoalbuminemia/etiología , Esteatorrea/diagnóstico , Linfopenia/complicaciones , Biopsia , Enteropatías Perdedoras de Proteínas/fisiopatología , Streptococcus agalactiae/aislamiento & purificación , Infecciones por Escherichia coli/diagnóstico
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