Navegando por Assunto "HTLV"
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Item Acesso aberto (Open Access) Inquérito sorológico da infecção pelo vírus linfotrópico humano de células T (HTLV) em comunidades amazônicas localizadasnas margens do Lago da Usina Hidrelétrica de Tucurui/PA(Universidade Federal do Pará, 2010-12-20) FALCÃO, Luiz Fábio Magno; QUARESMA, Juarez Antônio Simões; http://lattes.cnpq.br/3350166863853054The aim of this study was to evaluate seroprevalence lymphotropic virus human T cells (HTLV) in individuals living in communities of Alcobaça e Ararão, located on the shores of lake Hydroelectric Plant Tucuruí / PA. Serum samples from 657 individuals were analyzed by immunoenzymatic assays the type of ELISA (Symbioys ®). There was a significant prevalence of HTLVI / II (4.7%) in the study population and the demographic characteristics reflects most of them are older than 40 years (p = 0.0239), unmarried (p = 0.035), resident for over 10 years in the catchment area of the study (p = 0.0027) and educational level was equal to or less than 4 years (p = 0.0308). There was no statistically significant difference when analyzing variables such as sex, birth, blood transfusion and previous surgery. The prevalence for HTLV is considered high according to current literature, justifying the screening for this virus at the study sites in order that we can better understand the epidemiology of HTLV transmission in the population.Item Acesso aberto (Open Access) Soroprevalência da infecção pelo vírus linfotrópico de células T humanas em parturientes de maternidade pública de Belém, Pará, Brasil(Universidade Federal do Pará, 2014-05-29) FERREIRA, Louise de Souza Canto; SOUSA, Maisa Silva de; http://lattes.cnpq.br/177536318078121Introduction: The Human T Lymphotropic virus type-1 was first retrovirus identified and associated epidemiologically to leukemia/lymphoma T-cell adult (LLTA), tropical spastic parapesis (TSP), polymyositis, arthritis, uveitis, skin lesions and strongyloidiasis and other diseases. The vertical transmission has fundamental role on HTLV silent dispersion and the implementation of policies needs epidemiological indicators to develop prevention campaigns of infection transmission. Objective: To investigate the infection by the human T lymphotropic virus (HTLV-1 and HTLV-2) with parturients attended on public maternity of Belém, Pará, Brazil. Materials and Methods: A representative sample of parturients was investigated on period of March to August 2013, to detection of antibodies anti-HTLV by imunoenzimatic method (ELISA) and for research proviral genome by polymerase chain reaction. Results: The seroprevalence of 0.2% (1/452) identified one infected parturient who reported to be intravenous drug user and to have multiple sexual partners, without genotype identification. The postpartum carrier of HTLV did not breastfeed her newborn son, who showed no anti-HTLV antibodies one year after birth, like her mother and her older daughters, excluding the vertical familial transmission. Conclusion: This study identified a low but present prevalence of HTLV in pregnant women attended at a public maternity, as has been identified in other units of primary and secondary health care throughout Brazil, demonstrating the need for control measures of this infection in all levels of public health attention.Item Acesso aberto (Open Access) Soroprevalência da infecção pelo vírus linfotrópico de células T humanas em portadores de doenças linfoproliferativas atendidos no Hospital Ophir Loyola, Belém, Pará(Universidade Federal do Pará, 2012-05-25) BARBOSA, Sheyla Fernanda da Costa; SOUSA, Maisa Silva de; http://lattes.cnpq.br/1775363180781218About 20% of the worldwide incidence of cancer in humans is attributed to infection by viruses called oncovirus, among them stands out Lymphotropic Virus Human T type 1 (HTLV-1). This virus is associated with several pathologies, among the most studied are paraparesis Tropical Spastic Associated Myelopathy HTLV (HAM / TSP) and the Leukemia Lymphoma, Adult T Cells (ATLL). The HTLV-1 is endemic in many regions of the world, with the highest concentration of cases in southern Japan, while HTLV-2 has been found in greater frequency among intravenous drug users in the United States and Europe, and among native populations of Americas. In Brazil, HTLV 1 is distributed throughout the national territory. The objective of this research was to determine seroprevalence for T-Lymphotropic Virus Human Lymphoproliferative Disease in patients treated at Ophir Loyola Hospital, Belém, Pará The study population consisted of 364 patients diagnosed with lymphoproliferative disease (Hodgkin's lymphoma, Hodgkin lymphoma and non Leukemias Acute and Chronic Lymphoid), treated between January 2005 and December 2011. We used the ELISA test for serological examination and a case was confirmed by PCR. The seroprevalence of HTLV infection in this population was 3.17%, the molecular study of a case showed that it was of HTLV type 1. All serum-reactive individuals were diagnosed as non-Hodgkin lymphoma T cells (p = 0.0021). Among these, the initial manifestation of the disease occurred after the age of 30, the average age was 43.75 years and the majority were women. It is concluded that the prevalence of HTLV in the group studied is consistent with studies of HTLV between leukemias and lymphomas.Item Acesso aberto (Open Access) Transmissão intrafamiliar do Vírus linfotrópico de Células T Humanas tipo 1 em Belém, Pará, Brasil(Universidade Federal do Pará, 2012) ALMEIDA, Danilo de Souza; SOUSA, Maisa Silva de; http://lattes.cnpq.br/1775363180781218Retroviruses belong to a group of infectious agents that have received more attention from the scientific community since the early 19706, when cellular oncogenes have been reported related to them. From these preliminary studies it was described the first human retrovirus, virus Human T lymphotropic 1 (HTLV-1)20. Besides the leukemia/lymphoma adult T cell, HTLV-1 is also causing a degenerative neurological disease associated myelopathy tropical spastic HTLV-1/paraparesia (HAM / TSP) 7, 21. Blood samples from patients and their families living with the virus, seen in the NMT/UFPA were analyzed by molecular method, aiming to investigate the intrafamilial transmission of HTLV-1. Intrafamilial transmission was observed with 100% similarity between the nucleotide bases in nine (75%) of the 12 families studied, of which two families showed vertical transmission, sexual transmission had three families and three families who had both types of transmission. It was observed that three families change occurred in more than one nucleotide base pair, and in two families diverged by 0.2% and 0.4%, ie, had high similarity between their nucleotides (> 99.4 %), suggesting that in this case there intrafamilial transmission of HTLV-1. In one family there was a difference of 1.83%, indicating no intrafamilial transmission. The nucleotide sequence of the 5 'LTR segment and phylogenetic analysis showed high similarity entres the strains isolated in this study and confirmed the occurrence of the Cosmopolitan subtype Transcontinental subgroup. This study provides molecular evidence of intrafamilial transmission of HTLV-1 in patients treated at the Tropical Medicine Center UFPA. In this study the routes of transmission as breastfeeding and sex, was more prevalent for this spread.