Molecular characteristics of HIV-1 CRF01_AE strains in Zhejiang province in 2009 / 中华预防医学杂志
Chinese Journal of Preventive Medicine
; (12): 987-991, 2012.
Article
Dans Zh
| WPRIM
| ID: wpr-326196
Responsable en Bibliothèque :
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To analyze the molecular epidemiological characteristics of HIV-1 subtype CRF01_AE strains being prevailed among HIV/AIDS in Zhejiang province in 2009.</p><p><b>METHODS</b>A total of 303 subjects were identified by stratified random sampling among HIV infected individuals in Zhejiang province in 2009. Gag fragments of the HIV-1 strains were amplified by nested polymerase chain reaction from the DNA extracted from whole blood of HIV-1 infected individuals. PCR products were sequenced and analyzed by phylogenetic method.</p><p><b>RESULTS</b>A total of 132 HIV-1 subtype CRF01_AE sequences were identified from the 225 samples that sequenced successfully, accounting for 58.67% (132/225). A total of 90.91% (120/132) CRF01_AE strains infected HIV/AIDS were transmitted mainly by sexual contacts. A total of 65.91% (87/132) of the cases infected by heterosexual route and 25.00% (33/132) by homosexual route. There were three main clusters in the phylogenetic tree. Pairwise DNA distance within three groups was 0.037 ± 0.011, 0.034 ± 0.008 and 0.047 ± 0.010, which has statistical significance (P < 0.05). Distribution of the sequence of homosexual behavior infected individuals was relatively concentrated in clusters one (96.97%, 32/33), and crossed with heterosexual behavior infectors, and presented the close relations with strains from Jiangsu province, Zhengzhou of Henan province, Liaoning province, Shijiazhuang of Hebei province.</p><p><b>CONCLUSION</b>The CRF01_AE strains were the dominant subtypes among HIV infected individuals. The majority of the CRF01_AE infected cases had high risk sexual behavior. The heterosexual infected cases were more than homosexual cases. The circulating status of CRF01_AE strains in homosexual population was relatively independent, but also had evidence of transmission from man who have sex with man to heterosexual population.</p>
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Indice:
WPRIM
Sujet Principal:
Phylogenèse
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Variation génétique
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Virologie
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Chine
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Épidémiologie
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Syndrome d'immunodéficience acquise
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VIH-1 (Virus de l'Immunodéficience Humaine de type 1)
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Classification
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Épidémiologie moléculaire
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Génétique
Type d'étude:
Prognostic_studies
Limites du sujet:
Adolescent
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Adult
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Female
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Humans
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Male
Pays comme sujet:
Asia
langue:
Zh
Texte intégral:
Chinese Journal of Preventive Medicine
Année:
2012
Type:
Article