Tuberculin responses after BCG vaccination predict amyotrophic lateral sclerosis risk.

Autor:	Nakken O; Department of Neurology, Akershus University Hospital, Lørenskog, Norway., Vaage AM; Department of Neurology, Akershus University Hospital, Lørenskog, Norway.; Institute of Clinical Medicine, University of Oslo, Oslo, Norway., Stigum H; Norwegian Institute of Public Health, Oslo, Norway.; Department of Community Medicine and Global Health, University of Oslo, Oslo, Norway., Heldal E; Norwegian Institute of Public Health, Oslo, Norway., Meyer HE; Norwegian Institute of Public Health, Oslo, Norway.; Department of Community Medicine and Global Health, University of Oslo, Oslo, Norway., Holmøy T; Department of Neurology, Akershus University Hospital, Lørenskog, Norway.; Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
Jazyk:	angličtina
Zdroj:	Brain, behavior, & immunity - health [Brain Behav Immun Health] 2023 Nov 08; Vol. 34, pp. 100704. Date of Electronic Publication: 2023 Nov 08 (Print Publication: 2023).
DOI:	10.1016/j.bbih.2023.100704
Abstrakt:	Background: T cell infiltration around dying motor neurons is a hallmark of amyotrophic lateral sclerosis (ALS). It is not known if this immune response represents a cause or a consequence of the disease. We aimed to establish whether individual variation in regulation of a T cell driven immune response is associated with long-term ALS risk. Methods: Tuberculin skin test (TST) following BCG vaccination represents a standardized measure of a secondary T cell driven immune response. During a Norwegian tuberculosis screening program (1963-1975) Norwegian citizens born from 1910 to 1955 underwent TST. In those previously BCG vaccinated (median 7 years prior to TST), we related tuberculin skin tests to later ALS disease identified through validated Norwegian health registers. We fitted Cox proportional hazard models to investigate the association between tuberculin reactivity and ALS risk. Results: Among 324,629 participants (52 % women) with median age 22 (IQR 10) years at tuberculosis screening, 496 (50 % women) later developed ALS. Hazard ratio for ALS was 0.74 (95% CI 0.57-0.95) for those who remained TST negative compared to those who mounted a positive TST. The association was strongest when time between BCG immunization and TST was short. The associations observed persisted for more than four decades after TST measurement. Conclusions: Negative TST responses after BCG vaccination is associated with decreased long-term risk for ALS development, supporting a primary role for adaptive immunity in ALS development. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2023 The Authors.)
Databáze:	MEDLINE
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