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曼尼菲青霉聚糖结合蛋白多态性与坦桑尼亚东北部两个社区班氏丝虫感染的关系。

Association between mannose-binding lectin polymorphisms and Wuchereria bancrofti infection in two communities in North-Eastern Tanzania.

机构信息

Section of Health Services Research, Department of Public Health, University of Copenhagen, Denmark.

出版信息

Am J Trop Med Hyg. 2010 Jan;82(1):115-20. doi: 10.4269/ajtmh.2010.09-0342.

Abstract

The association between selected mannose-binding lectin (MBL) genotype polymorphisms and Wuchereria bancrofti infection status was assessed among individuals whose infection status had been monitored for three decades. Blood samples were collected in 2006 and examined for polymorphisms in the mbl-2 gene and for W. bancrofti-specific circulating filarial antigen (CFA) status. Logistic regression analysis showed a significant association between MBL genotype and CFA status, with low-expression MBL genotype individuals being almost three times more likely to be CFA positive than high-expression MBL genotype individuals (odds ratio [OR] = 2.90). When individuals' filarial infection (microfilaria) status in 1975 was included in the analyses, the gain of new infections between the two examination points was almost 10 times higher among individuals with low than among those with high MBL expression genotype (OR = 9.51). The susceptibility to W. bancrofti infection thus appears to be significantly affected by the MBL expression genotype of the host.

摘要

在对感染状况进行了三十年监测的人群中,评估了特定甘露糖结合凝集素(MBL)基因型多态性与班氏丝虫感染状况之间的关联。于 2006 年采集血样,检测 mbl-2 基因的多态性以及班氏丝虫特异性循环丝虫抗原(CFA)状况。逻辑回归分析显示 MBL 基因型与 CFA 状况之间存在显著关联,低表达 MBL 基因型个体 CFA 阳性的可能性几乎是高表达 MBL 基因型个体的三倍(比值比[OR] = 2.90)。当将个体在 1975 年的丝虫感染(微丝蚴)状况纳入分析时,在两个检测点之间获得新感染的个体中,低 MBL 表达基因型个体的感染率几乎比高 MBL 表达基因型个体高 10 倍(OR = 9.51)。因此,宿主的 MBL 表达基因型明显影响对班氏丝虫的易感性。

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