Strongyloidiasis is a life-threatening parasitic infection, especially in immunosuppressed patients, with death often occurring within several days. The disease has a worldwide distribution and is endemic in tropical and subtropical regions. Therefore, this study was conducted to investigate seroepidemiology of Strongyloides infection amongst immunocompromised patients in Southwest Iran. This cross-sectional study was conducted amongst a population of immunocompromised patients who were referred to health care or hospital referral centres in Ahvaz, Southwest Iran. Serum samples were tested by an enzyme immunoassay for anti-IgG Strongyloides antibody. Anti-Strongyloides stercoralis antibody was detected in 39 of 270 immunocommpromised cases, yielding a prevalence of 14.4%. No significant differences were indicated in terms of gender, age, or type of immunocompromised disorder with anti-Strongyloides stercoralis antibody levels. In conclusion, our results demonstrated high seroepidemiology of infection with this parasite in the region. Therefore, it appears immunocompromised patients should be tested for this infection using sensitive tests. However, current research underscores that strongyloidosis must not be neglected, and further assessments in high risk population are warranted.
Although alpha-thalassemia (alpha-thal) is the most common hereditary hemoglobin (Hb) disorder in Iran, no comprehensive data are so far available on the prevalence of the disease in the province of Khuzestan in Southwest Iran. This study investigates the spectrum of alpha-thal mutations in this region. One hundred and twenty-one subjects from Khuzestan Province, Iran, were initially tested for the three most common Iranian alpha-thal mutations (- alpha3.7, -alpha4.2, and --MED) by gap-polymerase chain reaction (gap-PCR). Reverse hybridization test strips and DNA sequencing were used to identify additional alpha-globin mutations. A total of 131 mutated alpha-globin alleles were identified in these patients. Of the 13 mutations that were detected in Khuzestan Province, Iran, the - alpha3.7 single gene deletion was the most frequently identified variant, representing 62.6% of the total; we also observed significant numbers of individuals with compound heterozygous mutations. On the basis of our results, we strongly recommend screening for the most common mutations to improve the molecular diagnosis of anemia in this region.
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