Evaluation of self-collected nasal, urine, and saliva samples for molecular detection of SARS-CoV-2 using an EUA approved RT-PCR assay and a laboratory developed LAMP SARS-CoV-2 test.

As the SARS-CoV-2 virus spread throughout the world, millions of positive cases of COVID-19 were registered and, even though there are millions of people already vaccinated against SARS-CoV-2, a large part of the global population remains vulnerable to contracting the virus. Massive nasopharyngeal sample collection in Puerto Rico at the beginning of the pandemic was limited by the scarcity of trained personnel and testing sites. To increase SARS-CoV-2 molecular testing availability, we evaluated the diagnostic accuracy of self-collected nasal, saliva, and urine samples using the TaqPath reverse transcription polymerase chain reaction (RT-PCR) COVID-19 kit to detect SARS-CoV-2. We also created a colorimetric loop-mediated isothermal amplification (LAMP) laboratory developed test (LDT) to detect SARS-CoV-2, as another strategy to increase the availability of molecular testing in community-based laboratories. Automated RNA extraction was performed in the KingFisher Flex instrument, followed by PCR quantification of SARS-CoV-2 on the 7500 Fast Dx RT-PCR using the TaqPath RT-PCR COVID-19 molecular test. Data was interpreted by the COVID-19 Interpretive Software from Applied Biosystems and statistically analyzed with Cohen's kappa coefficient (k). Cohen's kappa coefficient (k) for paired nasal and saliva samples showed moderate agreement (0.52). Saliva samples exhibited a higher viral load. We also observed 90% concordance between LifeGene-Biomarks' SARS-CoV-2 Rapid Colorimetric LAMP LDT and the TaqPath RT-PCR COVID-19 test. Our results suggest that self-collected saliva is superior to nasal and urine samples for COVID-19 testing. The results also suggest that the colorimetric LAMP LDT is a rapid alternative to RT-PCR tests for the detection of SARS-CoV-2. This test can be easily implemented in clinics, hospitals, the workplace, and at home; optimizing the surveillance and collection process, which helps mitigate global public health and socioeconomic upheaval caused by airborne pandemics.

Artificial Neural Networks and Experimental Analysis of the Resistance Spot Welding Parameters Effect on the Welded Joint Quality of AISI 304.

The automobile industry relies primarily on spot welding operations, particularly resistance spot welding (RSW). The performance and durability of the resistance spot-welded joints are significantly impacted by the welding quality outputs, such as the shear force, nugget diameter, failure mode, and the hardness of the welded joints. In light of this, the present study sought to determine how the aforementioned welding quality outputs of 0.5 and 1 mm thick austenitic stainless steel AISI 304 were affected by RSW parameters, such as welding current, welding time, pressure, holding time, squeezing time, and pulse welding. In order to guarantee precise evaluation and experimental analysis, it is essential that they are supported by a numerical model using an intelligent model. The primary objective of this research is to develop and enhance an intelligent model employing artificial neural network (ANN) models. This model aims to provide deeper knowledge of how the RSW parameters affect the quality of optimum joint behavior. The proposed neural network (NN) models were executed using different ANN structures with various training and transfer functions based on the feedforward backpropagation approach to find the optimal model. The performance of the ANN models was evaluated in accordance with validation metrics, like the mean squared error (MSE) and correlation coefficient (R2). Assessing the experimental findings revealed the maximum shear force and nugget diameter emerged to be 8.6 kN and 5.4 mm for the case of 1-1 mm, 3.298 kN and 4.1 mm for the case of 0.5-0.5 mm, and 4.031 kN and 4.9 mm for the case of 0.5-1 mm. Based on the results of the Pareto charts generated by the Minitab program, the most important parameter for the 1-1 mm case was the welding current; for the 0.5-0.5 mm case, it was pulse welding; and for the 0.5-1 mm case, it was holding time. When looking at the hardness results, it is clear that the nugget zone is much higher than the heat-affected zone (HZ) and base metal (BM) in all three cases. The ANN models showed that the one-output shear force model gave the best prediction, relating to the highest R and the lowest MSE compared to the one-output nugget diameter model and two-output structure. However, the Levenberg-Marquardt backpropagation (Trainlm) training function with the log sigmoid transfer function recorded the best prediction results of both ANN structures.

Phytochemical Profiling by UHPLC-Q-TOF/MS and Chemopreventive Effect of Aqueous Extract of Moringa oleifera Leaves and Benzyl Isothiocyanate on Murine Mammary Carcinogenesis.

Moringa oleifera Lam, commonly known as moringa, is a plant widely used both as a human food and for medicinal purposes around the world. This research aimed to evaluate the efficacy of the aqueous extract of Moringa oleifera leaves (MoAE) and benzyl isothiocyanate (BIT) in rats with induced breast cancer. Cancer was induced with 7,12-dimethylbenz[a]anthracene (DMBA) at a dose of 60 mg/kg by orogastric gavage once only. Forty-eight rats were randomly assigned to eight groups, each consisting of six individuals. The control group (healthy) was called Group I. Group II received DMBA plus saline. In addition to DMBA, Groups III, IV, and V received MoAE at 100, 250, and 500 mg/kg/day, respectively, while Groups VI, VII, and VIII received BIT at 5, 10, and 20 mg/kg/day, respectively. Treatment was carried out for 13 weeks. Secondary metabolite analysis results identified predominantly quercetin, caffeoylquinic acid, neochlorogenic acid, vitexin, and kaempferol, as well as tropone, betaine, loliolide, and vitexin. The administration of MoAE at a dose of 500 mg/kg and BIT at 20 mg/kg exhibited a notable decrease in both the total tumor count and the cumulative tumor weight, along with a delay in their onset. Furthermore, they improved the histological grade. A significant decrease in serum levels of VEGF and IL-1ß levels was observed (p < 0.001) with a better effect demonstrated with MoAE at 500 mg/kg and BIT at 20 mg/kg. In conclusion, this study suggests that both the aqueous extract of Moringa oleifera leaves and the benzyl isothiocyanate possess antitumor properties against mammary carcinogenesis, and this effect could be due, at least in part, to the flavonoids and isothiocyanates present in the extract.

Rasch analysis of the dermatology life quality index (DLQI) in patients with mild to moderate-severe psoriasis.

Background The Dermatology Life Quality Index (DLQI) is a valuable tool for assessing the quality of life in adult patients with psoriasis. Aims To analyse the reliability and validity of the DLQI to measure the quality of life in patients with mild to moderate-severe psoriasis. Methods This was a secondary validation study nested in a follow-up study. The Rasch-Andrich model was utilised to perform response function, item and person fit, differential item functioning, dimensionality, and reliability analyses. Results A total of 1439 patients were analysed, 52.1% male, mean age of 48.7 years (SD 16.1). Psoriasis vulgaris was the phenotype in 43.1% of patients, and 86% had a mild Psoriasis Area Severity Index (PASI). Adequate adjustment of the response function and the items was observed in the best-fit sample, except for item 7 (work and study). The measure explained 60.9% of the variance and presented a reliability of 0.86. Differential item functioning was identified by age, with a relevant bias in the estimation for older adults. Item-person maps are provided. Limitations This study was performed at a single centre, with most patients presenting a mild PASI score, limiting generalisation of the findings. Conclusion The validity evidence favours the use of the DLQI in moderate-severe psoriasis. However, the instrument biases the estimate of older adults. This population group should consider a specific version of the instrument.

Medium-Term Outcomes of the Arthroscopic Brostrom Procedure: A Retrospective Analysis of 66 Patients.

The arthroscopic Brostrom procedure is a minimally invasive technique that is a viable option surgeons have to treat patients with chronic lateral ankle instability (CAI). Our hypothesis was that there will be a statistically significant difference in pre- and postoperative scores and that patient satisfaction scores remained consistent at a minimum of 5 years postoperatively. Preoperative American Orthopedic Foot and Ankle (AOFAS) hindfoot scores, visual analog scale (VAS), foot function index (FFI) were compared with postoperative scores. Karlsson-Peterson (KP) scores were assessed at the final follow-up. Unpaired t tests were performed to determine if there was a statistically significant difference in AOFAS, VAS and FFI scores. Mean preoperative scores were (AOFAS) 51.8, (VAS) 7.36, and (FFI) 83.5, respectively. At the 5-year mark, the postoperative scores were 88.9, 2.24, 18.4 respectively and 83.6, for the KP scores. Furthermore, we compared those patients with a BMI <30 kg/m2 to those with a BMI ≥30 kg/m2. This comparison showed no statistically significant postoperative difference between groups at 5 years. The aim of the study was to determine the longevity of the procedure based on 5-year outcomes scores comparing preoperative and 5+-year AOFAS, VAS, and FFI scores. We found that there was a significant difference in all scores which suggests that this repair provides adequate relief of pain and improved outcomes at 5 years.

Aspectos farmacológicos y adherencia al tratamiento antirretroviral en pacientes VIH

Introducción: La adherencia al tratamiento farmacológico favorece la supresión viral y reduce la resistencia a la terapia antirretroviral de gran actividad a largo plazo. Objetivo: Determinar la relación entre los aspectos farmacológicos y la adherencia al tratamiento antirretroviral de una IPS colombiana. Metodología: Estudio analítico transversal en pacientes con diagnóstico de VIH en tratamiento antirretroviral entre los años 2012 a 2020. Se utilizó un modelo de regresión logística binaria múltiple con fines explicativos. Resultados: Se analizaron 9835 pacientes donde la proporción de adherencia fue de 90 % y en el modelo ajustado se evaluó su relación con los antecedentes de no adherencia (ORa:0,52 IC95 °/o:0,40-0,66), grupo farmacológico (2 ITIAN + 1 IP u otro) (ORa:1,22 IC95 %:0,99-1,76), dos tomas al día (ORa:1,02 IC95 %:0,74-1,40), unidades al día (≥ 3) (ORa:0,69 IC95 %:0,47-1,02), reacciones adversas a medicamentos (ORa:0,56 IC95 °%:0,40-0,78), polimedicación (ORa:1,36 IC95 %:1,00-1,85), tiempo TAR (1 a 2 años) (ORa:1,63 IC95 %:1,27-2,09),tiempo TAR (6 a 12 meses) (ORa:1,66 IC95 %:1,27-2,18), tiempo TAR (<6 meses) (ORa:1,36 IC95 %:1,03-1,78), tasa de reclamación de los medicamentos (ORa:0,42 IC95 %:0,32-0,55) y antecedentes PRUM (ORa:0,11 IC95 %:0,09-0,14). Discusión: La proporción de adherencia obtenida es superior a lo descrito para otros países (entre 60-77 %); sin embargo se encuentra que los hallazgos correspondientes al efecto de las variables farmacológicas analizadas son acordes a lo descrito en estudios previos en el tema Conclusión: Los antecedentes de no adherencia, reacciones adversas, tasa de reclamación de los medicamentos y antecedentes de problemas relacionados con el uso de medicamentos son aspectos que reducen la probabilidad de adherencia; mientras que el mayor tiempo de uso del tratamiento aumenta la misma.

Introduction: Adherence to drug treatment promotes viral suppression and reduces long-term resistance to highly active antiretroviral therapy (HAART). Objective: To determine the relationship between the pharmacological aspects and adherence to antiretroviral treatment in a Colombian IPS. Methodology: Cross-sectional analytical study in patients with HIV on antiretroviral treatment between 2012 and 2020. A multiple binary logistic regression model was used for explanatory purposes. Results: A total of 9,835 patients were analyzed where the proportion of adherence was 90 % and in the adjusted model its relationship with history of non-adherence was assessed (ORa: 0,52 95 % CI: 0,40-0,66), pharmacological group (2 NRTI + 1 PI or other) (ORa: 1,22 95 % CI: 0,99-1,76), two doses per day (ORa: 1,02 95 % CI: 0,74-1,40), units per day (≥ 3 ) (ORa: 0,69 95 % CI: 0,47-1,02), adverse drug reactions (ORa: 0,56 95 % CI: 0,40-0,78), polypharmacy (ORa: 1,36 95 % CI : 1,00-1,85), ART time (1 to 2 years) (ORa: 1,63 95 % CI: 1,27-2,09), ART time (6 to 12 months) (ORa: 1,66 95 % CI: 1,27-2,18), ART time (<6 months) (ORa: 1,36 95 % CI: 1,03-1,78), inconsistency in the claim (ORa: 0,42 95 % CI: 0,32-0,55) and PRUM history (ORa: 0,11 95 % CI: 0,09-0,14). Discussion: The proportion of adherence obtained is higher than that described for other countries (between 60-77 %); however, the findings corresponding to the effect of the pharmacological variables analysed are in line with those described in previous studies on the subject. Conclusion: The history of non-adherence, adverse reactions, inconsistencies in the claim fill history and problems related to the use of medications are aspects that reduce the probability of adherence. While the longer time of use of the treatment increases adherence.

Mobilization of persistent organic pollutants in humpback whales: Insights from feeding areas in the Antarctic peninsula and Strait of Magellan to migration, breeding, and calving grounds along the Brazilian coast.

Southern Hemisphere Megaptera novaeangliae undertake the longest migration, which reflect their exposure to lipophilic contaminants. To assess these changes, persistent organic pollutants were analyzed in blubber samples of humpback whales from three regions: the Antarctic Peninsula (n = 46), the Strait of Magellan, Chile (n = 22), and the Brazilian coast (n = 38). The similarity in PCB and HCB levels between individuals from feeding grounds and breeding grounds suggests contamination during feeding. The whales around the Antarctic Peninsula exhibited a predominance of tetrachlorobiphenyl PCBs. Whales feeding in the Strait of Magellan showed a slight prevalence of 5Cl biphenyls, likely due to their consumption of subantarctic krill species as well as small fishes potentially contaminated by industrial activities in Chile. The dominance of 5-6Cl congeners in whales in Brazil, may be attributed to the extreme physiological changes during fasting when whales utilize blubber reserves and metabolize lighter congeners, or transfer them to their calves.

Functionality and characterization of modified starch films with pineapple leaf fibers.

The objective of this work was to modify banana starch with pineapple leaf fibers (PALF) and its production of biodegradable films. The reaction conditions of the starch modification were a Starch/PALF mass ratio of 50, a time of 1 h and a temperature of 140 °C, to obtain a yield of 41.18 %. Characterization by FTIR and NMR confirmed that the chemical reaction was carried out. XRD and TGA analysis showed that the crystalline zones of the starch were affected during the modification and the product obtained is thermally less stable compared to unmodified starch. The modified starch showed a lower pasting profile compared to the native starch; however, the modified starch showed the ability to form a film. The starch-PALF films were obtained by the casting method and partially characterized. These films presented better mechanical properties compared to the unmodified films. Also, these films could compete with conventional non-biodegradable plastics.

Related factors to non-adherence to antiretroviral therapy in HIV/AIDS patients.

OBJECTIVE: To identify sociodemographic, clinical, and pharmacological factors  associated with nonadherence to antiretroviral treatment in patients with  human immunodeficiency virus/acquired immunodeficiency syndrome treated  between 2017 and 2020 in four cities in Colombia. METHOD: An observational, cross-sectional, retrospective study was conducted of a population of patients with human immunodeficiency virus/acquired immunodeficiency syndrome treated between 2017 and 2020. The Morisky-Green scale, the simplified medication adherence  questionnaire, and the simplified scale to detect adherence problems to  antiretroviral treatment were applied to determine patient adherence. A  binomial multiple logistic regression was performed to evaluate the factors that  best explain nonadherence. RESULTS: A total of 9,835 patients were evaluated, of whom 74.4% were men,  71.1% were aged between 18 and 44 years, 76.0% had attended at most  secondary school, 78.1% were single, and 97.6% resided in an urban area.  After applying three different scales to each patient, 10% of the study  population were identified as nonadherent to treatment. The risk of  nonadherence was significantly higher in patients who presented any drug- related problem or had an adverse reaction to antiretroviral drugs. CONCLUSIONS: The variables most strongly associated with nonadherence to  antiretroviral treatment were drug-related problems, adverse drug reactions, a  history of nonadherence to treatment, and psychoactive substance use.

OBJETIVO: Identificar los factores sociodemográficos, clínicos y farmacológicos asociados a la no adherencia al tratamiento antirretroviral en pacientes con infección por virus de la inmunodeficiencia humana/sida atendidos entre 2017 y 2020 en diferentes ciudades de Colombia.Método: Se realizó un estudio observacional, de corte transversal y retrospectivo, con una población de pacientes con infección por virus de la  inmunodeficiencia humana/sida atendidos entre 2017 a 2020. Se aplicaron las  escalas Morisky-Green, el cuestionario simplificado de adherencia a la  medicación y la escala simplificada para detectar problemas de adherencia al  tratamiento antirretroviral, para determinar la adherencia de los pacientes. Se  realizó una regresión logística múltiple para evaluar los factores que mejor  explican la no adherencia. RESULTADOS: Se evaluaron 9.835 pacientes, de los cuales el 74,4% eran hombres, el 71,1% tenían una edad entre 18 a 44 años, el 76,0% cursó como máximo hasta secundaria, el 78,1% eran solteros y el 97,6%  residían en zona urbana. Se encontró una proporción de no adherencia al  tratamiento del 10% después de aplicar tres escalas diferentes a cada paciente. Las personas que presentaron algún problema relacionado con los medicamentos tuvieron un riesgo significativamente mayor de no ser adherentes, al igual que aquellos que tuvieron alguna reacción adversa a los medicamentos antirretrovirales. CONCLUSIONES: Los problemas relacionados con el uso de medicamentos, las  reacciones adversas a medicamentos, los antecedentes de no adherencia al  tratamiento y el consumo de sustancias psicoactivas fueron las variables que  más se asociaron con la no adherencia al tratamiento antirretroviral.

Factores relacionados con la no adherencia a la terapia antirretroviral en pacientes con VIH/sida / Related factors to non-adherence to antiretroviral therapy in HIV/AIDS patients

Objetivo: Identificar los factores sociodemográficos, clínicos y farmacológicos asociados a la no adherencia al tratamiento antirretroviral enpacientes con infección por virus de la inmunodeficiencia humana/sidaatendidos entre 2017 y 2020 en diferentes ciudades de Colombia.Método: Se realizó un estudio observacional, de corte transversal yretrospectivo, con una población de pacientes con infección por virusde la inmunodeficiencia humana/sida atendidos entre 2017 a 2020.Se aplicaron las escalas Morisky-Green, el cuestionario simplificado deadherencia a la medicación y la escala simplificada para detectar problemas de adherencia al tratamiento antirretroviral, para determinar laadherencia de los pacientes. Se realizó una regresión logística múltiplepara evaluar los factores que mejor explican la no adherencia.Resultados: Se evaluaron 9.835 pacientes, de los cuales el 74,4% eranhombres, el 71,1% tenían una edad entre 18 a 44 años, el 76,0% cursócomo máximo hasta secundaria, el 78,1% eran solteros y el 97,6% residían en zona urbana. Se encontró una proporción de no adherencia altratamiento del 10% después de aplicar tres escalas diferentes a cadapaciente. Las personas que presentaron algún problema relacionado conlos medicamentos tuvieron un riesgo significativamente mayor de no seradherentes, al igual que aquellos que tuvieron alguna reacción adversa alos medicamentos antirretrovirales. (AU)

Objective: To identify sociodemographic, clinical, and pharmacological factors associated with nonadherence to antiretroviral treatment inpatients with human immunodeficiency virus/acquired immunodeficiencysyndrome treated between 2017 and 2020 in four cities in Colombia.Method: An observational, cross-sectional, retrospective study was conducted of a population of patients with human immunodeficiency virus/acquired immunodeficiency syndrome treated between 2017 and 2020.The Morisky-Green scale, the simplified medication adherence questionnaire, and the simplified scale to detect adherence problems to antiretroviral treatment were applied to determine patient adherence. A binomialmultiple logistic regression was performed to evaluate the factors that bestexplain nonadherence.Results: A total of 9,835 patients were evaluated, of whom 74.4%were men, 71.1% were aged between 18 and 44 years, 76.0% hadattended at most secondary school, 78.1% were single, and 97.6% resided in an urban area. After applying three different scales to eachpatient, 10% of the study population were identified as nonadherent totreatment. The risk of nonadherence was significantly higher in patientswho presented any drug-related problem or had an adverse reaction toantiretroviral drugs. (AU)

Factors associated with virologic failure in HIV patients on antiretroviral therapy.

OBJECTIVE: To determine the factors associated with virologic failure n HIV  patients on antiretroviral treatment treated in a Colombian health institution. METHOD: This was a cross-sectional observational retrospective analytical study of HIV patients receiving antiretroviral treatment between 2007­2020. Sociodemographic, pharmacological and clinical variables were collected, including viral load, adherence, and the medication  possession ratio. For statistical analysis, crude and adjusted odds ratios and confidence intervals were obtained. RESULTS: In a population of 5,406 patients, the proportion of virologic failure  was 16.7%. Moreover, in the adjusted model, an association was found  between virologic failure and time on treatment greater than one year,  medication possession ratio under 80%, failure to claim medications from the  pharmacy due to dose omission or discontinuation, adherence under 85%, CD4  count under 500, total cholesterol levels above 201 mg/dL, high density  lipoproteins under 39 mg/dL and presence of mycosis. CONCLUSIONS: In our cohort of HIV patients, short treatment periods, CD4 counts under 200, a low medication possession ratio, failure to timely claim medications from the pharmacy due to omission or  discontinuation, and a lower degree of adherence were factors related to  virologic failure.

OBJETIVO: Determinar los factores asociados al fracaso virológico en pacientes  con el virus de la inmunodeficiencia humana con tratamiento antirretroviral  atendidos en una institución de salud colombiana.Método: Estudio transversal, observacional, retrospectivo y analítico en pacientes con el virus de la inmunodeficiencia humana con tratamiento antirretroviral entre 2007-2020. Se recogieron variables  Sociodemográficas, farmacológicas y clínicas, incluyendo la carga viral, el  grado de adherencia y la tasa de reclamación de medicamentos. Para el  análisis estadístico se obtuvieron las odds ratio crudas y ajustadas y los  intervalos de confianza. RESULTADOS: De una población de 5.406 pacientes, la proporción de fracaso  virológico fue de 16,7% y en el modelo ajustado se encontró asociación entre  el fracaso virológico con el tiempo en el tratamiento mayor a un año, la tasa de posesión de la reclamación inferior al 80%, la no reclamación oportuna por  omisión o suspensión, la adherencia inferior al 85%, el recuento de CD4  inferior a 500, niveles de colesterol total mayores de 201 mg/dl, lipoproteína  de alta densidad menor de 39 mg/dl y presencia de micosis. CONCLUSIONES: En nuestra cohorte de pacientes con el virus de la  Inmunodeficiencia humana, un menor tiempo en tratamiento, un recuento de CD4 menor de 200, una baja tasa de reclamación de los medicamentos, así  como la no reclamación oportuna por omisión y suspensión y un menor grado  de adherencia son factores que se relacionan con el fracaso virológico.

Corrosion Performance and Mechanical Strength in Aluminum 6061 Joints by Pulsed Gas Metal Arc Welding.

In this paper, the analysis of electrochemical corrosion performance and mechanical strength of weld joints of aluminum 6061 in two-heat treatment conditions was performed. The joints were produced by gas metal arc welding in pulsed mode. The original material exhibited precipitates of ß and ß" phases in a volume fraction (Vf) of 2.35%. When it was subjected to a solubilization process, these phases were present in a Vf = 2.97%. This increase is due to their change in shape and distribution in clusters within the aluminum matrix. After the welding process, the best sample in the solubilization condition reached 117 MPa, while the original material achieved 104 MPa, but all samples showed a fracture in the fusion zone. This is attributed to the heat input that produces high and low hardness zones along the heat-affected zone and the welding zone, respectively. Moreover, the change in microstructure and phase composition creates a galvanic couple, susceptible to electrochemical corrosion, which is more evident in the heat-affected zone than in the other weld regions, exhibiting uniform and localized corrosion, as was evident by electrochemical impedance spectroscopy. The heat from the welding process negatively affects the corrosion resistance, mainly in the heat-affected zone.

Factores asociados al fracaso virológico en pacientes VIH con tratamiento antirretroviral / Factors associated with virologic failure in HIV patients on antiretroviral therapy

Objetivo: Determinar los factores asociados al fracaso virológico enpacientes con el virus de la inmunodeficiencia humana con tratamientoantirretroviral atendidos en una institución de salud colombiana.Método: Estudio transversal, observacional, retrospectivo y analítico enpacientes con el virus de la inmunodeficiencia humana con tratamientoantirretroviral entre 2007-2020. Se recogieron variables sociodemográficas,farmacológicas y clínicas, incluyendo la carga viral, el grado de adherenciay la tasa de reclamación de medicamentos. Para el análisis estadístico seobtuvieron las odds ratio crudas y ajustadas y los intervalos de confianza.Resultados: De una población de 5.406 pacientes, la proporción defracaso virológico fue de 16,7% y en el modelo ajustado se encontró asociación entre el fracaso virológico con el tiempo en el tratamiento mayora un año, la tasa de posesión de la reclamación inferior al 80%, la noreclamación oportuna por omisión o suspensión, la adherencia inferior al85%, el recuento de CD4 inferior a 500, niveles de colesterol total mayores de 201 mg/dl, lipoproteína de alta densidad menor de 39 mg/dl ypresencia de micosis.Conclusiones: En nuestra cohorte de pacientes con el virus de la inmunodeficiencia humana, un menor tiempo en tratamiento, un recuento deCD4 menor de 200, una baja tasa de reclamación de los medicamentos,así como la no reclamación oportuna por omisión y suspensión y un menorgrado de adherencia son factores que se relacionan con el fracaso virológico. (AU)

Objective: To determine the factors associated with virologic failurein HIV patients on antiretroviral treatment treated in a Colombian healthinstitution.Method: This was a cross-sectional observational retrospective analytical study of HIV patients receiving antiretroviral treatment between2007-2020. Sociodemographic, pharmacological and clinical variableswere collected, including viral load, adherence, and the medication possession ratio. For statistical analysis, crude and adjusted odds ratios andconfidence intervals were obtained.Results: In a population of 5,406 patients, the proportion of virologicfailure was 16.7%. Moreover, in the adjusted model, an association wasfound between virologic failure and time on treatment greater than oneyear, medication possession ratio under 80%, failure to claim medications from the pharmacy due to dose omission or discontinuation, adherence under 85%, CD4 count under 500, total cholesterol levels above201 mg/dL, high density lipoproteins under 39 mg/dL and presence ofmycosis.Conclusions: In our cohort of HIV patients, short treatment periods, CD4counts under 200, a low medication possession ratio, failure to timelyclaim medications from the pharmacy due to omission or discontinuation,and a lower degree of adherence were factors related to virologic failure. (AU)

Antiulcer Effect of Senna multiglandulosa via Increased Secretion of Mucus and Nonprotein Sulfhydryl Groups in an Experimental Murine Model.

Peptic ulcer is a universal condition that is a public health problem due to its prevalence, risk of complications and socioeconomic impact. This study aimed to determine the antiulcer effect of the hydroalcoholic extract from Senna multiglandulosa leaves against ethanol-induced gastric ulcer in rats. Thirty-six male albino Holtzman rats were assigned to six groups. Group I received physiological saline (PS) at doses of 10 mL/kg; group II: ethanol (PS + ethanol 5 mL/kg); group III; omeprazole 100 mg/kg/day (gold standard); groups IV, V and VI received doses of 100, 250 and 500 mg/kg/day of S. multiglandulosa extract, respectively. The stomach was removed to determine the ulcerative lesions and two sections of the glandular zone to carry out the analysis of the gastric mucus and sulfhydryl groups content. As result, S. multiglandulosa at doses of 250 and 500 mg/kg produced a significant decrease of the injured area, with values of 46.28 ± 7.95 mm2 and 6.91 ± 2.48 mm2, respectively (P < 0.001). The protective effect was showed at dose of 500 mg/kg (92.27%) and a significant increase in the production of mucus with a value of 83.13 ± 13.09 mg/mL/g of tissue (61.14%). The production of nonprotein sulfhydryl groups (NP-SG) also increased significantly at the three evaluated doses, being 250.34 ± 21.16 µg/g tissue at dose of 500 mg/kg (119.94%). It is concluded that S. multiglandulosa extract protected against ethanol-induced gastric ulcer due to increased gastric mucus secretion and its antioxidant activity due to the generation of nonprotein sulfhydryl groups.

Seguridad y efecto protector de Cenchrus echinatus en el cáncer de mama inducido en ratas / Safety and protective effect of Cenchrus echinatus on breast cancer induced in rats

Introducción: El cáncer de mama es una enfermedad que va aumentando su incidencia anualmente; es así que en búsqueda de alternativas complementarias para el tratamiento, se han estudiado algunas plantas medicinales que contienen grandes cantidades de polifenoles, los cuales tienen efectos anticancerígenos como es el caso del Cenchrus echinatus L. Objetivo: Determinar la seguridad y el efecto protector del extracto etanólico de Cenchrus echinatus L. (cadillo) sobre el cáncer de mama inducido por 7,12-Dimetilbenzo[a]antraceno DMBA en ratas. Métodos: Estudio preclínico, experimental en ratones machos Balb/C53 y ratas Holtzman de ambos sexos. Se calculó la toxicidad aguda (DL50) y la toxicidad a 45 días mediante métodos de los probits y OECD respectivamente; para evaluar el efecto protector se utilizó el método de Barros 2004, también se registró microscópicamente la proliferación de células tumorales, utilizando el análisis estadístico descriptivo e inferencial, considerando p<0.05. Resultados: Los estudios de seguridad demuestran que el extracto no induce cambios significativos a nivel hematológico, bioquímico y anatomopatológico. Se logró un 76.92 % del efecto protector del extracto frente al cáncer de mama inducido por DMBA en ratas. Conclusiones: Se ha demostrado que el extracto de Cenchrus echinatus L. presenta efecto protector sobre el cáncer de mama inducido por 7,12-Dimetilbenzo[a]antraceno en ratas; y no es tóxico en ratones y ratas.

Introduction: Breast cancer is a disease that is increasing its incidence annually, so in search of complementary alternatives for treatment have been studied some medicinal plants containing large amounts of polyphenols, which have anticancer effects as is the case of Cenchrus echinatus L. Objective: To determine the safety and protective effect of ethanol extract of Cenchrus echinatus L. (burdock) on breast cancer induced by 7,12-dimethylbenz[a]anthracene in rats. Methods: Preclinical, experimental study in male Balb/C53 mice and Holtzman rats of both sexes. Acute toxicity and toxicity at 45 days were calculated using probit and OECD methods, respectively; to evaluate the protective effect, the Barros 2004 method was used; tumor cell proliferation was also registered microscopically, using descriptive and inferential statistical analysis, considering p<0.05. Results: Safety studies show that the extract does not induce significant hematologic, biochemical and pathological changes level 80% of the protective effect of the extract against DMBA-induced breast cancer in rats was achieved. Conclusions: It has been shown that Cenchrus echinatus extract L. has protective effect on breast cancer by 7,12-dimethylbenz[a]anthracene induced in rats; and it is not toxic in mice and rats.

Therapeutic failure in moderate and severe psoriasis patients in a health institution - a transversal study of prevalence and demographic determinants.

BACKGROUND: Psoriasis is a chronic disease that seriously impacts quality of life. There are known genetic and environmental factors that influence its onset and progression. Even though there is no cure for it, there are a variety of treatments available today to control its symptoms, although many of them fail to do so substantially. OBJECTIVE: To identify the association of multiple sociodemographic, clinical, and pharmacological factors with therapeutic failure. METHODS: Observational, descriptive, cross-sectional, retrospective, and analytical study of therapeutic failure in patients with moderate or severe psoriasis between 2020 and 2021 was performed. RESULTS: In total 1051 patients with moderate or severe psoriasis were evaluated. Gender (ORa: 0.579 CI 95%: 0.382-0.878), type of therapy (biologic or non-biologic; ORa: 1.939 CI 95%: 1.242-3.027), age (ORa: 1.018 CI 95%: 1.003-1.034), days of treatment (ORa: 1 CI 95%: 0.999-1) and DLQI (ORa: 1.212 CI 95%: 1.172-1.253) are significantly associated with therapeutic failure. CONCLUSION: Being male and receiving biologic therapy are associated with a higher incidence of therapeutic failure in the treatment of moderate or severe psoriasis. The increase in DLQI increase in the probability of failure, and mayor age or days of treatment decrease in the probability of failure.

Clinical, sociodemographic, pharmacological and quality of life characterization of patients with a diagnosis of moderate to severe psoriasis treated in a specialized psoriasis clinic / Caracterización clínica, sociodemográfica, farmacológica y calidad de vida de pacientes con diagnóstico de psoriasis moderada a severa atendidos en una clínica especializada en psoriasis

Abstract Introduction: psoriasis is a systemic, inflammatory, and chronic disease with a global prevalence between 0.6-6.5 %. It is related to multiple comorbidities and generates a significant decrease in quality of life. Objective: to characterize sociodemographic, clinical, pharmacological, and quality of life variables in a population of patients with moderate-severe psoriasis. Methods: descriptive observational study the patients with a diagnosis of severe-moderate psoriasis treated in the Clínica Integral de Psoriasis-CLIPSO between May 2018 - June 2020. A collection format was designed for defined variables and a univariate analysis was performed. Results: 948 patients were identified with a median age of 50 years (IQR: 38-60) of which 51.0 % were women. 23.6 % were incidents with a median treatment time of 114 days (IQR: 98-127) and 73.9 % were prevalent with a median treatment time of 228 days (IQR: 160-371). The type of therapy used was mainly non-biological systemic and 90.9 % of the patients were adherent to the treatment. The clinical variables were similar for both groups and the most common phenotype was psoriasis vulgaris (57.1 %). The health-related quality of life in both groups was greater than 60 points and the affected dimensions were physical and psychological health. 27.3 % of the patients had comorbidities associated with cardiovascular risk and 44.7 % were overweight. Conclusion: knowing the sociodemographic, clinical, pharmacological, and quality of life characteristics of patients with moderate-severe psoriasis allows the identification of risk factors and comprehensive management of the disease.

Resumen Introducción: la psoriasis es una enfermedad sistémica, inflamatoria y crónica con una prevalencia global entre 0,6-6,5 %. Está relacionada con múltiples comorbilidades y genera una disminución significativa en la calidad de vida. Objetivo: caracterización sociodemográfica, clínica, farmacológica y calidad de vida de un grupo de pacientes con psoriasis moderada-severa. Métodos: estudio observacional descriptivo en pacientes con diagnóstico de psoriasis moderada-severa atendidos en la Clínica Integral de Psoriasis (CLIPSO) entre mayo 2018 y junio 2020. Se diseñó un formato para la recolección de las variables definidas y se realizó un análisis univariado. Resultados: se identificaron 948 pacientes con una mediana de edad de 50 años (RIC:38-60) de los cuales el 51 % eran mujeres. El 23,6 % eran incidentes, con una mediana en tiempo de tratamiento de 114 días (RIC:98-127) y 73,9 % eran prevalentes, con una mediana de tiempo de tratamiento de 228 días (RIC:160-371). El tipo de terapia utilizada fue principalmente sistémica no biológica y el 90,9 % de los pacientes eran adherentes al tratamiento. Las variables clínicas fueron similares en los incidentes y los prevalentes y el fenotipo más común fue psoriasis vulgar (57,1 %). La calidad de vida en ambos grupos fue mayor a 60 puntos y las dimensiones más afectadas en la calidad de vida fueron la salud física y la psicológica. El 27,3 % presentaban comorbilidades asociadas a riesgo cardiovascular y 44,7 % presentaban sobrepeso. Conclusión: conocer las características sociodemográficas, clínicas, farmacológicas y calidad de vida de los pacientes con psoriasis moderada-severa permite la identificación de factores de riesgo y un manejo integral de la enfermedad.

Phytochemical Constituents and Ameliorative Effect of the Essential Oil from Annona muricata L. Leaves in a Murine Model of Breast Cancer.

Annona muricata leaves are traditionally used as an anticancer plant in the world. The aim of this study was to evaluate the ameliorative effect of the essential oil from Annona muricata leaves (EOAm) in an experimental model of breast cancer and to determine the volatile constituents with gas chromatography-mass spectrometry (GC-MS). Thirty female rats were assigned to five groups: the control group; the DMBA (7,12-dimethylbenz[α]anthracene) group; and three groups received daily EOAm doses of 50, 100, and 200 mg/kg/day, plus DMBA, respectively. After 13 weeks of treatment, tumors were analyzed pathologically and biochemical markers in serum were noted. As a result, in GC-MS analysis, 40 compounds were identified and 4 of them were abundant: Z-caryophyllene (40.22%), followed by α-selinene (9.94%), ß-pinene (8.92%), and ß-elemene (7.48%). Furthermore, EOAm in a dose-dependent form produced a reduction in tumor frequency and the accumulated tumor volume was reduced by 50% and 71% with doses of 100 and 200 mg/kg, respectively. Serum levels of reduced glutathione (GSH) increased and malondialdehyde (MDA) decreased significantly compared to the DMBA group. Serum levels of vascular endothelial growth factor (VEGF) decreased significantly from 70.75 ± 7.15 pg/mL in the DMBA group to 46.50 ± 9.00 and 34.13 ± 11.50 pg/mL in groups treated with doses of 100 and 200 mg/kg, respectively. This study concludes that the EOAm leaves showed an ameliorative effect in a murine model of breast cancer.

Efecto protector del aceite de Sacha inchi ( Plukenetía volubilis linneo ) en ratas Holtzman con inducción de artritis experimental / Protective effect of Sacha inchi oil ( Plukenetía volubilis linneo ) in Holtzman rats with induction of experimental arthritis

RESUMEN Objetivo. Demostrar cual es el resultado de la protección del aceite de Sacha inchi (SI) al realizar una inducción artificial de artritis al inyectar carragenina a ratas Holtzman. Métodos. Estudio cuantitativo, experimental y correlacional; se usaron 30 ratas macho: divididos en cinco grupos aleatorios : 1) Solución salina fisiológica (SSF) 2 mL/kg; 2) Carragenina (C) 0,1 mL solución 2% vía intraarticular, en la zona de la articulación del fémur con la tibia izquierda; 3) C y SI 250 mg/kg; 4) C y SI 1125 mg/kg; y 5) C y SI 2250 mg/ kg; determinándose tiempo (segundos), tipo de prensión (normal, pobre, regular, moderada, intensa), e inflamación pannus, fibrosis pannus, mediante estudio histopatológico. Se aplicó análisis de varianza, y los test de Tukey y Fisher. Resultados. Hubo mayor porcentaje de efecto antiinflamatorio dosis dependiente y tiempo de prensión a 2250 mg/Kg, seguido por 1125 mg/Kg. El estudio histopatológico mostró un pannus leve y fibrosis ausente con la dosis más alta; a dosis de 1125 mg/Kg de aceite SI hubo pannus moderado, y fibrosis leve. Conclusiones. Se demostró el resultado protector del aceite de Sacha Inchi (SI) aumentando y mejorando el tiempo tipo de prensión y reducción del pannus en la artritis inducida por carragenina en ratas Holtzman.

ABSTRACT Objective. To demonstrate the protective effect of Sacha inchi oil (SI) in arthritis induced by carrageenan in Holtzman rats. Methods. Quantitative, experimental and correlational study; 30 rats, males, randomly distributed in 5 groups were used: 1) SSF 2 mL/kg; 2) Carrageenan; 3) 4) and 5) Sacha inchi. Except for the control, they received 0.1 mL 2% carrageenan intra-articularly (the area of the femur joint with the left tibia); sacha inchi oil orally 225, 1125 and 2250 mg/kg correspondingly; determining time (seconds), type of grip (normal, poor, regular, moderate, intense), and pannus inflammation, pannus fibrosis by means of histopathological study. Applying analysis of variance, Tukey and Fisher test. Results. There was a higher percentage of dose-dependent anti-inflammatory effect and grasp time at 2250 mg/Kg, followed by 1125 mg/Kg; and the histopathological study showed mild pannus and absent fibrosis with the highest dose, in contrast to doses of 1125 mg/Kg of oil there was moderate pannus, and mild fibrosis. Conclusions. The protective effect of Sacha inchi oil (SI) has demonstrated by increasing the time and improving the type of grasp and reducing the pannus in arthritis induced by carrageenan in Holtzman rats.

Biomolecules with Antioxidant Capacity from the Seeds and Sprouts of 20 Varieties of Chenopodium quinoa Willd. (Quinoa).

Quinoa has acquired a great interest due to its high content of nutrients and biomolecules that have nutritional and medicinal properties. The aim of this study was to compare the total phenolic content (TPC), total flavonoids (TF), and the antioxidant capacity of 20 varieties of seeds and sprouts of quinoa extract. Quinoa seeds were germinated for 72 h and dried in an oven at 45 °C. The extracts were obtained by dynamic extraction using methanol. Phytochemical analysis with liquid chromatography coupled with mass spectrometry (LC-ESI-MS/MS), TPC, TF, and the antioxidant capacity was carried out and compared between both extracts. The TPC was determined with Folin-Ciocalteu reagent, TF with AlCl3, and the antioxidant capacity was determined according to the DPPH and ABTS assays. Sprout extracts showed high values of TPC (31.28 ± 0.42 mg GAE/g; Pasankalla variety), TF (14.31 ± 0.50 mg EQ/g; black Coito variety), and antioxidant capacity (IC50 (DPPH): 12.69 ± 0.29 µg/mL and IC50 (ABTS): 3.51 ± 0.04 µg/mL; Pasankalla). The extracts of the Pasankalla variety revealed 93 and 90 phytochemical constituents in the seeds and sprouts, respectively, such as amino acids, phenolic acids, flavonoids, fatty acids, and triterpene saponins, among others. Quinoa sprouts showed a high content of TPC and TF, and high antioxidant capacity compared with seed extracts, especially the Pasankalla variety.