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Erythrocyte invasions and receptor heterogeneity in field isolates of Nanay river basin Iquitos

Asian Pacific Journal of Tropical Medicine 2012年第8期5卷 589-593页

作者： Kuppusamy Chenniappan Sarah H Johns laboratorio de investigacion deproductos naturales antiparasitarios de la amazonia UNAPPampa chicaIquitosPeru 065

Objective:To determine whether the requirements for sialic acid varies and whether several types of silaic acid independent receptors utilized for invasion mechanisms of fresh filed isolates collected around Nanay river basin,***:The field isolates were cultured as described previously by Jensen and Trager and MR4 protocol with little *** erythrocytes preparation and subsequent enzyme treatment was done as described previously by *** little *** assay was performed as described previously by Sharma et al with little ***:The Nanay river basin isolates showed five types of invasion mechanisms or types of receptors-ligand *** we observed that an equal numbers of neuraminidase sensitive and resistant invasion receptor-ligand interaction profiles as the most common receptor-ligand invasion *** resistance trypsin sensitive chymotrypsin sensitive(NM_RT_SCT_S) invasion of receptor-ligand interaction profile was found in seven isolates,Five field isolates and one reference strain showed neuraminidase sensitive, trypsin sensitive and chymotrypsin resistant(NM_RT_SCT_R) invasion of receptor-ligand interactions, six isolates including one reference strains dd2 showed neuraminidase sensitive,trypsin and chymotrypsin resistance(NM_ST_RCT_R) indicating its dependence on sialic acids and independence of trypsin and chymotrypsin sensitive *** isolates showed neuraminidase sensitive, trypsin sensitive and chymotrypsin sensitive(NM_ST_SCT_S) invasion of receptor-ligand interactions, seven isolates were neuraminidase resistant,trypsin sensitive and chymotrypsin resistance (NM_RT_SCT_R) invasion of receptor-ligand interactions,indicating its dependence on trypsin sensitive ***:The Nanay river basin isolates showed five types of invasion mechanisms or types of receptors-ligand interactions.A full understanding of theses invasion mechanisms may allow the developm

关键词： Nanay river basin Invasion Sialic acid Plasmodium falciparum Malaria

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