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Article Abstract
Background: Urogenital schistosomiasis caused by affects over 100 million people globally, with potential long-term genetic and immunological consequences poorly understood in endemic populations. This study investigates genetic damage and immune dysregulation in infected individuals from a hyperendemic region in Nigeria.
Objective: To quantify genetic damage markers and characterize immune system alterations in individuals with confirmed infection compared to uninfected controls from Atisbo Local Government Area, Oyo State, Nigeria.
Methods: This cross-sectional study included 240 participants (120 infected, 120 controls) aged 15–65 years, selected using multi-stage cluster sampling. Genetic damage was assessed using comet assay, micronucleus testing, and chromosomal aberration analysis. Immune profiling included Th1/Th2 cytokines, immunoglobulins, and complement components. Multivariate regression models identified independent predictors of genetic damage.
Results: Infected individuals demonstrated markedly elevated genetic damage: comet tail moment 15.7 ± 4.2 versus 6.3 ± 2.1 (Cohen’s d = 2.80, < 0.001), micronucleus frequency 8.4 ± 2.7 versus 3.1 ± 1.2 per 1000 cells (d = 2.41, < 0.001), and chromosomal abnormalities 12.3% versus 4.1% ( < 0.001). Pronounced Th2 polarization was evident with IL-4 increased 4.1-fold, IL-5 4.6-fold, and IL-13 4.1-fold, while IFN-γ was reduced by 65% (all < 0.001, FDR-adjusted). infection independently predicted genetic damage (β = 8.42, 95% CI: 7.51–9.33, < 0.001) after adjusting for age, BMI, hemoglobin, and sex, explaining 73% of the variance in tail moment values.
Conclusions: infection causes substantial genetic damage and Th2-dominant immune dysregulation with potentially serious long-term health consequences. These findings provide scientific justification for intensified control efforts, enhanced post-treatment monitoring, and cancer surveillance programs in endemic populations.
Supplementary Information: The online version contains supplementary material available at 10.1186/s12865-025-00749-w.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12406355 | PMC |
| http://dx.doi.org/10.1186/s12865-025-00749-w | DOI Listing |
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