Resumo

RIOS-ORREGO, A.; ALVAREZ-CASTILLO, T.; CARMONA-FONSECA, J.  e  BLAIR-TRUJILLO, S.. Temporal evolution of platelets and anti-platelets antibodies in patients of endemic area with non complicated malaria. An. Med. Interna (Madrid) [online]. 2005, vol.22, n.12, pp.561-568. ISSN 0212-7199.

Aim: To evaluate the number of platelets and the title of anti-platelet antibodies IgG Ac-PI (by flow cytometry) in patients with non-complicated malaria. Methods: Descriptive, prospective and longitudinal study from 45 patients (aged among 14-67). Thirty patients were followed during 7 days. Results: A) Pretreatment: it was found malarial thrombocytopenia (MT) in 71 % and significant association between MT and Ac-PI in 33 %. MT was not associated to residence zone, to have had malaria in the last year and Plasmodium species but sex associated (males, p= 0,02078195), although, the Ac-PI titers of male and female was similar. Correspondingly, the number of platelets was statistically similar to the values of above variables. There was a low and an inverse lineal correlation between platelets and titres of Ac-P1 (r= -0,342 (p= 0,02310)). B) During the following, multiple linear regression among platelets, age, years of residence in the zone, number of malaria episodes in the last year, parasitaemia (logarithmically expressed) and Ac-P1 titers showed no significant coefficient and the maximum explanation achieved (17%) was parasitaemia and Ac-P1 titers. Similar analysis among Ac-P1 and age, years of residence in the zone number of malaria episodes in the last year, parasitaemia (logarithmically expressed) showed that the first three explain 38 % of the changes in Ac-P1, whereas malaria episodes and years of residence in the zone explain 28%.

Palavras-chave : Thrombocytopenia; Anti-platelets antibodies; Malaria; Flow cytometry.

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