Association of IL-10 gene polymorphisms and human T lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis in North-East of Iran (Mashhad)

Abbas Shirdel, Mahmoud Reza Azarpazhooh, Maryam Sahebari, Mohsen Ghanbari, Seyedeh Zahra Mirfeizi, Ian Hutchinson, Aghigh Ziaee, Houshang Rafatpanah*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)
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Abstract

The underlying mechanisms leading to the development of human T-cell lymphotropic virus type I (HTLV-I) associated myelopathy/tropical spastic paraparesis (HAM/TSP) in HTLV-I infected individuals are not fully understood. Host genetic factors appear to be involved as risk factors for developing HAM/TSP. We investigated the possible contribution of interleukin-10 (IL-10) as a risk factor to HAM/TSP by comparing frequencies of promoter region single nucleotide polymorphisms in HTLV-I infected Iranian patients who either remained asymptomatic or developed HAM/TSP and asymptomatic HTLV-I carriers. Healthy, uninfected individuals from the same region served as healthy controls. Significant differences were observed in the distribution of IL-10 promoter alleles and genotypes at position -819 and -592 between HAM/TSP patients and healthy controls (P=0.01), and between HTLV-I carriers and healthy controls (P=0.02). The frequency of the low IL-10 producer haplotype (-1082*A, -819*T, -592*A) was significantly associated with HTLV-I carriage or HAM/TSP compared with healthy controls (P=0.02 and 0.01, respectively). Our results suggest that IL-10 -819*T and -592*A alleles are significant risk factors for developing HTLLV-I infection but do not appear to convey additional risk for developing HAM/TSP.

Original languageEnglish
Pages (from-to)258-263
Number of pages6
JournalIranian Journal of Basic Medical Sciences
Volume16
Issue number3
Publication statusPublished - Mar 2013

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