Navegando por Autor "MARUYAMA, Koshi"

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Acesso aberto (Open Access)
Prevalence of HTLV-I antibody among two distinct ethnic groups inhabiting the Amazon region of Brazil
(1992-08) NAKAUCHI, C. M.; MARUYAMA, Koshi; KANZAKI, Luis Isamu Barros; LINHARES, Alexandre da Costa; AZEVEDO, Vânia Nakauth; FUKUSHIMA, T.; MIYAUCHI, M.; KOSHIKAWA, N.; TAMAYAMA, C.; MOCHIZUKI, S.; KAWAMURA, K.
HTLV-I seroprevalences of 3.63% (02/55), 12.19% (10/82) and 13.88% (10/72) were demonstrated among Tiryio, Mekranoiti and Xicrin Amazonian Indians, respectively, by the Western blotting enzyme assay (WBEI). By indirect immuno electron microscopy (IIEM), 2 Tiriyo, 9 Mekranoiti and 6 Xicrin Amerindians were reactive. Of 44 serum samples from Japanese immigrants, none reacted by any of the techniques before mentioned. One, 8 and 6 serum samples from Tiryio, Mekranoiti and Xicrin Indians, respectively, were both WBEI and IIEM positive. Our results strongly suggest that HTLV-I and/or an HTLV-I antigenic variant circulate (s) among populations living in the Amazon region of Brazil.
Acesso aberto (Open Access)
Prevalence of human T cell leukemia virus-I (HTLV-I) antibody among populations living in the Amazon region of Brazil (preliminary report)
(1990-03) NAKAUCHI, C. M.; LINHARES, Alexandre da Costa; MARUYAMA, Koshi; KANZAKI, Luis Isamu Barros; MACEDO, J. E.; AZEVEDO, Vânia Nakauth; CASSEB, Jorge Simão do Rosário
Prevalence of human T cell leukemia virus-I (HTLV-I) antibody among populations living in the Amazon region of Brazil (preliminary report)NakauchiC. M.LinharesA. C.MaruyamaK.KanzakiL. I.MacedoJ. E.AzevedoV. N.CassebJ. S. R. Fundação Serviços de Saúde Pública, Seção de Vírus, Instituto Evandro Chagas Belém Brasil Chiba Cancer Research Institute, Department of Pathology Chiba Japan Universidade Federal do Pará Belém Brasil Instituto Offir Loyola Belém Brasil Faculdade Estadual de Medicina Belém Brasil 0319908512933Forty-tree (31.4%) out of 137 serum samples obtained from two Indian communities living in the Amazon region were found to be positive for HTLV-I antibody, as tested by enzyme-linked immunosorbent assay (Elisa). Eighty-two sera were collected from Mekranoiti Indians, yielding 39% of positivity, whereas 11 (20.0%) or the 55 Tiriyo serum samples had antibody to HTLV-I. In addition, positive results occurred in 10 (23.2%) out of 43 sera obtained from patients living in the Belem area, who were suffering from cancer affecting different organs. Five (16.7%) out of 30 Elisa positive specimens were also shown to be positive by either Western blot analysis (WB) or indirect immunogold electron microscopy (IIG-EM).