Вирусная серопозитивность Эпштейна-Барра в группе шри-ланкийских пациентов с ранним множественным склерозом: предварительное тематическое исследование в Южной Азии.
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De Alwis Shanindra, Muthugala Rohitha, Senanayake Bimsara
Аннотация
Оригинал публикации
Epstein-Barr virus seropositivity in a cohort of Sri Lankan patients with early multiple sclerosis: Preliminary case control study from South Asia.
BACKGROUND: Multiple sclerosis (MS) is an immune-mediated demyelinating disease strongly associated with Epstein-Barr virus (EBV) infection, yet evidence from South Asia is scarce. This study examined EBV seroprevalence and antibody titre levels among Sri Lankan patients with early MS compared with matched controls.
OBJECTIVE: To assess EBV seropositivity and anti-viral capsid antigen (VCA) IgG titres in MS patients and their association with disease risk.
METHODS: A matched case-control study was conducted at the National Hospital of Sri Lanka, including 55 MS patients and 52 age- and sex-matched controls. Anti-EBV VCA IgG titres were quantified using a validated enzyme-linked immunosorbent assay (ELISA) and categorized as low (22-100 RU/mL), moderate (101-200 RU/mL), or high (>200 RU/mL).
RESULTS: EBV seropositivity was observed in 96.3 % of MS cases and 86.5 % of controls (OR = 4.12; 95 % CI 0.82-20.85; p = 0.09). Participants with high antibody titres (>200 RU/mL) had an 11-fold higher risk of MS (OR = 11.0; 95 % CI 2.2-54.7; p = 0.003), showing a significant dose-response trend (p = 0.01).
CONCLUSION: This is the first study to report EBV antibody prevalence among MS patients in Sri Lanka and only the second from South Asia. Findings suggest a potential causal link between EBV and MS and highlight the need for larger regional investigations.