Evidenciação do antígeno da hepatite B (HBsAg) em Triatominae Hepatitis B antigen (HBsAg) in wild triatominae in Brazil

Abstract

De 3.200 "manchas" provenientes de insetos dos gêneros Triatoma e Panstrogylus, positivas para sangue humano, 12 deram resultados presuntivamente positivos, por imunodifusão, para HBsAg. Deste total, só 7 casos foram confirmados como positivos, por radioimunoensaio, correspondendo todos eles a "manchas" obtidas de ninfas de Triatoma infestans.A total of 3,200 impressions were fixed on filter paper and were identified as containing human blood obtained from blood-sucking arthropods of the Triatoma and Panstrongylus genre. The impressions were then examined for the presence of the hepatitis B antigen (HBsAg). The immunodifusion technique showed that 12 impressions were presumably HBsAg positive, but the radioimmunoassay technique only confirmed 7 positive results. The positive samples were all obtained from Triatoma infestans nymphae.

Keywords

• Hepatite B (HBsAg)
• Triatomíneos
• Imunodifusão
• Radioimunoensaio
• Hepatitis B antigens
• Triatomidae
• Gel diffusion tests
• Radioimmunoassay