Reverse Transcriptase
Mostrando 1-12 de 3049 artigos, teses e dissertações.
-
1. Comparison of clinical characteristics of wild-type SARS-CoV-2 and Omicron
SUMMARY OBJECTIVE: This study aimed to investigate the effect of mutations by comparing wild-type SARS-CoV-2 and Omicron regarding clinical features in patients with COVID-19. It also aimed to assess whether SARS-CoV-2 cycle threshold value could predict COVID-19 severity. METHODS: A total of 960 wild-type and 411 Omicron variant patients with positive res
Revista da Associação Médica Brasileira. Publicado em: 2022
-
2. No association between vitamin D status and COVID-19 infection in São Paulo, Brazil
ABSTRACT In recent years the immunomodulatory actions of vitamin D, a steroid hormone, have been extensively studied. In 2020, due to the COVID-19 pandemic, the question arose as to 25(OH)D status would be related to susceptibility to SARS-CoV-2 infection, since several studies pointed out a higher prevalence and severity of the disease in populations with l
Arch. Endocrinol. Metab.. Publicado em: 2021-06
-
3. Reverse-transcriptase polymerase chain reaction versus chest computed tomography for detecting early symptoms of COVID-19. A diagnostic accuracy systematic review and meta-analysis
ABSTRACT BACKGROUND: A positive real-time reverse-transcriptase polymerase chain reaction (RT-PCR) for SARS CoV-2, from nasopharyngeal swabs, is the current gold standard diagnostic test for this virus and has sensitivity of 60-70%. Some studies have demonstrated a significant number of false-negative RT-PCR tests while displaying significant tomographic f
Sao Paulo Med. J.. Publicado em: 2020-10
-
4. Effects of Methionine Deficiency on the B Lymphocyte and Immunoglobulins of Cecal Tonsil in Cobb Broilers
ABSTRACT The present study was conducted on one-day-old broilers to investigate the effects of methionine deficiency on B lymphocytes and immunoglobulins (sIgA, IgA, IgG, IgM) in the cecal tonsil of Cobb broiler chicken. Methods including immunohistochemistry (IHC), western blot (WB), quantitative real-time reverse transcriptase-polymerase chain reaction (qR
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
-
5. Evaluation of stemness marker expression in bovine ovarian granulosa cells
Abstract The objective of this study was to assess the stemness marker expressions (Oct4, Nanog, and Sox2) of granulosa cells (GCs) collected from bovine ovarian follicles and in vitro expansion. The single bovine ovarian follicles were isolated and categorized into 4 groups according to their diameter including group A (<2 mm), group B (2-3 mm), group C (3-
Anim. Reprod.. Publicado em: 25/11/2019
-
6. Does the Glyphosate Treatment Interfere Negatively on RNA Integrity in Glyphosate-Resistant and -Sensitive Conyza bonariensis?
RESUMO: A buva (Conyza bonariensis (L.) Cronq.) está entre as plantas daninhas resistentes ao glifosato mais difíceis de serem manejadas em todo o mundo. Na ciência das plantas daninhas, abordagens moleculares, como o sequenciamento de RNA (RNA-Seq) e a reação da transcriptase reversa da polimerase em tempo real (RT-qPCR), têm sido empregadas para estu
Planta daninha. Publicado em: 04/11/2019
-
7. Chemical diversity and activity profiles of HIV-1 reverse transcriptase inhibitors from plants
Abstract Current challenges to antiretroviral therapy have opened new vistas in the search for novel drugs from natural products. This review focusses on plants as sources of inhibitors for human immunodeficiency virus type 1 (HIV-1) reverse transcriptase. Based on a systematic search of the literature, anti-HIV-1 reverse transcriptase activity was recorded
Rev. bras. farmacogn.. Publicado em: 17/10/2019
-
8. Factors associated with mortality in HIV patients failing antiretroviral therapy, in Salvador, Brazil
ABSTRACT Highly active antiretroviral therapy (HAART) has significantly improved survival of people living with HIV/Aids (PLWHA). However, poor treatment adherence to HAART and other problems, still cause therapy failure and contribute to increased morbidity and mortality of PLWHA. In this retrospective cohort study (2013-2015), we sought to evaluate the fac
Braz J Infect Dis. Publicado em: 09/09/2019
-
9. The Use of Two-Dimensional Strain Measured by Speckle Tracking in the Identification of Incipient Ventricular Dysfunction in HIV-Infected Patients on Antiretroviral Therapy, Untreated HIV Patients and Healthy Controls
Resumo Fundamento: A maior parte das alterações cardiovasculares dos pacientes infectados pelo vírus da imunodeficiência humana (HIV) tem sido associada ao dano miocárdico causado diretamente pelo vírus. Alguns casos, porém, podem estar associados a efeitos adversos da terapia antirretroviral (TARV). Novas técnicas de avaliação da função ventric
Arq. Bras. Cardiol.. Publicado em: 02/09/2019
-
10. Chemical characterization, antioxidant and anti-HIV activities of a Brazilian propolis from Ceará state
ABSTRACT Propolis (bee glue) a product of Apis mellifera L. is a resinous mixture containing chiefly beeswax and resin harvested by bees from plant leaves, buds and exudates. Extracts of a propolis sample from Salitre, a municipality of Ceará state (northeast Brazil) were obtained with solvents of increasing polarity (hexane, chloroform, ethyl acetate and m
Rev. bras. farmacogn.. Publicado em: 26/08/2019
-
11. Molecular epidemiology of Hepatitis delta virus infection in Minas Gerais state from Brazil, an area outside the hyperendemic region of the Amazon Basin
BACKGROUND Hepatitis delta virus (HDV) infections in hepatitis B virus (HBV) carriers are the most severe form of viral hepatitis. HDV prevalence is high in the Brazilian Amazon, but studies in other regions of the country are still scarce and often underestimated its prevalence by including a small numbers of individuals. OBJECTIVE This study aimed to de
Mem. Inst. Oswaldo Cruz. Publicado em: 22/08/2019
-
12. Expression of specificity protein 1 and collagen I in primary pterygial tissues
RESUMO Objetivo: Determinar os perfis de expressão do fator de transcrição da proteína de especificidade 1 e do colágeno I em tecidos pterigiais primários e conjuntivais normais, e explorar o papel da proteína de especificidade 1 e colágeno I no desenvolvimento pterigial. Métodos: Foram coletados os tecidos pterigiais de 20 pacientes submetidos à
Arq. Bras. Oftalmol.. Publicado em: 03/06/2019