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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.
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COVID-19 , Técnicas de Diagnóstico Molecular , Técnicas de Amplificação de Ácido Nucleico , SARS-CoV-2 , Saliva , Manejo de Espécimes , Humanos , Saliva/virologia , SARS-CoV-2/genética , SARS-CoV-2/isolamento & purificação , COVID-19/diagnóstico , COVID-19/virologia , COVID-19/urina , Técnicas de Amplificação de Ácido Nucleico/métodos , Manejo de Espécimes/métodos , Técnicas de Diagnóstico Molecular/métodos , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos , RNA Viral/análise , RNA Viral/urina , RNA Viral/genética , RNA Viral/isolamento & purificação , Teste de Ácido Nucleico para COVID-19/métodos , Sensibilidade e Especificidade , Porto Rico/epidemiologia , Teste para COVID-19/métodosRESUMO
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.
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Moringa oleifera , Camundongos , Ratos , Humanos , Animais , Moringa oleifera/química , Extratos Vegetais/química , Cromatografia Líquida de Alta Pressão , Isotiocianatos/química , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/análise , Carcinogênese , Folhas de Planta/químicaRESUMO
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.
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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.
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Jubarte , Animais , Poluentes Orgânicos Persistentes , Regiões Antárticas , Brasil , CetáceosRESUMO
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.
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Ananas , Amido , Amido/química , Solubilidade , PermeabilidadeRESUMO
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.
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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.
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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.
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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.
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Psoríase , Qualidade de Vida , Humanos , Masculino , Feminino , Estudos Transversais , Estudos Retrospectivos , Prevalência , Índice de Gravidade de Doença , Psoríase/tratamento farmacológico , Psoríase/epidemiologia , Psoríase/diagnósticoRESUMO
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.