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Distribution and effects of polymorphic RANTES gene alleles in HIV/HCV coinfection -- a prospective cross-sectional study.

Abstract：

AIM:Chemokines and their receptors are crucial for immune responses in HCV and HIV infection. RANTES gene polymorphisms lead to altered gene expression and influence the natural course of HIV infection. Therefore, these mutations may also affect the course of HIV/HCV coinfection. METHODS:We determined allele frequencies of RANTES-403 (G --> A), RANTES-28 (C --> G) and RANTES-IN1.1 (T --> C) polymorphisms using real-time PCR and hybridization probes in patients with HIV (n = 85), HCV (n = 112), HIV/HCV coinfection (n = 121), and 109 healthy controls. Furthermore, HIV and HCV loads as well as CD4(+) and CD8(+) cell counts were compared between different RANTES genotypes. RESULTS:Frequencies of RANTES-403 A, RANTES-28 G and RANTES-IN1.1 C alleles were higher in HIV infected patients than in healthy controls (-403: 28.2% vs 15.1%, P = 0.002; -28: 5.4% vs 2.8%, not significant; IN1.1: 19.0% vs 11.0%, P = 0.038). In HIV/HCV coinfected patients, these RANTES alleles were less frequent than in patients with HIV infection alone (15.4% P = 0.002; 1.7%; P = 0.048; 12.0%; not significant). Frequencies of these alleles were not significantly different between HIV/HCV positive patients, HCV positive patients and healthy controls. CONCLUSION:All three RANTES polymorphisms showed increased frequencies of the variant allele exclusively in patients with HIV monoinfection. The finding that the frequencies of these alleles remained unaltered in HIV/HCV coinfected patients suggests that HCV coinfection interferes with selection processes associated with these alleles in HIV infection.

journal_name

World J Gastroenterol

journal_title

World journal of gastroenterology

authors

Ahlenstiel G,Iwan A,Nattermann J,Bueren K,Rockstroh JK,Brackmann HH,Kupfer B,Landt O,Peled A,Sauerbruch T,Spengler U,Woitas RP

doi

10.3748/wjg.v11.i48.7631

keywords:

subject

Has Abstract

pub_date

2005-12-28 00:00:00

pages

7631-8

issue

48

eissn

1007-9327

issn

2219-2840

journal_volume

11

pub_type

杂志文章

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