Artigos Científicos - ICB

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/2152

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Assessment of the sensory and physical limitations imposed by leprosy in a Brazilian Amazon Population
(Universidade Federal do Pará, 2017-04) ABEN-ATHAR, Cintia Yolette Urbano Pauxis; LIMA, Sandra Souza; ISHAK, Ricardo; VALLINOTO, Antonio Carlos Rosário
Introduction: Leprosy often results in sensory and physical limitations. This study aimed to evaluate these limitations using a quantitative approach in leprosy patients in Belém (Pará, Brazil). Methods: This epidemiological, cross-sectional study measured the sensory impairment of smell and taste through the use of a questionnaire and evaluated activity limitations of daily life imposed by leprosy through the Screening of Activity Limitation and Safety Awareness (SALSA) Scale. Data were collected from 84 patients and associations between the degree of disability and clinical and epidemiological characteristics were assessed. Results: The majority of patients were men (64.3%), married (52.4%), age 31-40 years old (26.2%), had primary education (50%), and were independent laborers (36.9%). The multibacillary operational classification (81%), borderline clinical form (57.1%), and 0 degrees of physical disability (41.7%) were predominant. SALSA scores ranged from 17 to 59 points, and being without limitations was predominant (53.6%). The risk awareness score ranged from 0 to 8, with a score of 0 (no awareness of risk) being the most common (56%). Evaluation of smell and taste sensory sensitivities revealed that 70.2% did not experience these sensory changes. Patients with leprosy reactions were 7 times more likely to develop activity limitations, and those who had physical disabilities were approximately four times more likely to develop a clinical picture of activity limitations. Conclusions: Most patients showed no sensory changes, but patients with leprosy reactions were significantly more likely to develop activity limitations. Finally, further studies should be performed, assessing a higher number of patients to confirm the present results.
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Development and characterization of a packaging cell line for pseudo-infectious yellow fever virus particle generation
(Universidade Federal do Pará, 2018-02) QUEIROZ, Sabrina Ribeiro de Almeida; SILVA JÚNIOR, José Valter Joaquim; SILVA, Andrea Nazare Monteiro Rangel da; OLIVEIRA, Amanda Gomes de; SANTOS, Jefferson José da Silva; GIL, Laura Helena Vega Gonzales
Introduction: Pseudo-infectious yellow fever viral particles (YFV-PIVs) have been used to study vaccines and viral packaging. Here, we report the development of a packaging cell line, which expresses the YFV prM/E proteins. Methods: HEK293 cells were transfected with YFV prM/E and C (84 nt) genes to generate HEK293-YFV-PrM/E-opt. The cells were evaluated for their ability to express the heterologous proteins and to package the replicon repYFV-17D-LucIRES, generating YFV-PIVs. Results: The expression of prM/E proteins was confirmed, and the cell line trans-packaged the replicon for recovery of a reporter for the YFV-PIVs. Conclusions: HEK293-YFV-prM/E-opt trans-packaging capacity demonstrates its possible biotechnology application.
Acesso aberto (Open Access)
Pesquisa de enterovírus em casos de síndrome de meningite asséptica de Belém, PA
(Universidade Federal do Pará, 2005-10) LAMARÃO, Letícia Martins; GOMES, Maria de Lourdes Contente; FERREIRA, Lauze Lee Alves; PARACAMPOS, Cleide Mara Fonseca; ARAÚJO, Lia Crystina Bastos; CARNEIRO NETO, José Tavares; SANTANA, Marquete B.
With the objective of isolating and identifying enteroviral serotypes, which are the most frequent etiologic agents of aseptic meningitis syndrome, cerebrospinal fluid samples were studied from patients referred to the health unit in the City of Belém (State of Pará, Brazil), from March 2002 to March 2003. The samples were inoculated in RD and HEp-2 cells line, and the positive were identified by neutralization test or indirect immunofluorescence. Out of 249 samples, 33 (13.2%) were positive 57.6% (n = 19) in patients under 11 years of age (p <0.03) and predominantly (72.7%) in males (p <0.008). The serotypes isolated were: Echovirus 30 (n = 31), Coxsackievirus B5 (n = 1) and Echovirus 30 and 4. In conclusion, this type of study also serves to determine the national picture, which is still little defined, regarding the most prevalent viral agents in AMS cases.
Acesso aberto (Open Access)
Toll-like receptor 3 gene polymorphisms are not associated with the risk of hepatitis B and hepatitis C virus infection
(Universidade Federal do Pará, 2015-04) SÁ, Keyla Santos Guedes de; PIRES NETO, Orlando de Souza; SANTANA, Bárbara Brasil; GOMES, Samara Tatielle Monteiro; AMORAS, Ednelza da Silva Graça; CONDE, Simone Regina Souza da Silva; DEMACHKI, Sâmia; AZEVEDO, Vânia Nakauth; MACHADO, Luiz Fernando Almeida; FEITOSA, Rosimar Neris Martins; ISHAK, Marluísa de Oliveira Guimarães; ISHAK, Ricardo; VALLINOTO, Antonio Carlos Rosário
Introduction: The present study investigated the prevalence of two single-nucleotide polymorphisms (SNPs) in the Toll-like receptor 3 (TLR3) gene in patients infected with hepatitis B virus (HBV) and hepatitis C virus (HCV). Methods: Samples collected from HCV (n = 74) and HBV (n = 35) carriers were subjected to quantitative real-time PCR (qPCR) to detect the presence of the SNPs rs5743305 and rs3775291 in TLR3 and to measure the following biomarkers: alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transpeptidase (GGT), and prothrombin time (PT). A healthy control group was investigated and consisted of 299 HCV- and HBV-seronegative individuals. Results: No signifi cant differences in allele, genotype and haplotype frequencies were observed between the investigated groups, and no association was observed between the polymorphisms and histopathological results. Nevertheless, genotypes TA/AA (rs5743305) and GG (rs3775291) appear to be associated with higher levels of ALT (p<0.01), AST (p<0.05) and PT (p<0.05). In addition, genotypes TT (rs5743305; p<0.05) and GG (rs3775291; p<0.05) were associated with higher GGT levels. Conclusions: This genetic analysis revealed the absence of an association between the polymorphisms investigated and susceptibility to HBV and HCV infection; however, these polymorphisms might be associated with a greater degree of biliary damage during the course of HCV infection.
Acesso aberto (Open Access)
Viral etiology among the elderly presenting acute respiratory infection during the influenza season
(Universidade Federal do Pará, 2011-02) WATANABE, Aripuanã Sakurada Aranha; CARRARO, Emerson; CANDEIAS, João Manuel Grisi; CORDEIRO, Maria Rita Donalísio; LEAL, Elcio de Souza; GRANATO, Celso Francisco Hernandes; BELLEI, Nancy Cristina Junqueira
Introduction: Acute respiratory tract infections are the most common illness in all individuals. Rhinoviruses have been reported as the etiology of more than 50% of respiratory tract infections worldwide. The study prospectively evaluated 47 elderly individuals from a group of 384 randomly assigned for acute respiratory viral infections (cold or flu) and assessed the occurrence of human rhinovirus (HRV), influenza A and B, respiratory syncytial virus and metapneumovirus (hMPV) in Botucatu, State of São Paulo, Brazil. Methods: Forty-nine nasal swabs collected from 47 elderly individuals following inclusion visits from 2002 to 2003 were tested by GenScan RT-PCR. HRV-positive samples were sequenced for phylogenetic analysis. Results: No sample was positive for influenza A/B or RSV. HRV was detected in 28.6% (14/47) and hMPV in 2% (1/47). Of 14 positive samples, 9 isolates were successfully sequenced, showing the follow group distribution: 6 group A, 1 group B and 2 group C HRVs. Conclusions: The high incidence of HRV during the months of the influenza season requires further study regarding HRV infection impact on respiratory complications among this population. Infection caused by HRV is very frequent and may contribute to increasing the already high demand for healthcare during the influenza season.

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