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• W3184752240 abstract "The present study examined whether mitochondrial DNA copy number (mtDNAcn) and telomere length - key markers of cellular aging - were altered in male and female participants with obsessive-compulsive disorder (OCD) compared to healthy controls. We also tested for associations between these alterations and OCD-related clinical features and inflammatory index.A total of 235 patients with OCD (38.7% female) and 234 healthy controls (41.5% female) were included. We quantified whole-blood mtDNAcn and leukocyte telomere length using quantitative polymerase chain reaction. We also calculated the neutrophil-to-lymphocyte ratio from complete blood cell counts.Multivariate analysis of covariance showed that OCD status had a significant overall effect on cellular aging markers in men (Wilks λ = 0.889, F2,275 = 17.13, p < 0.001) and women (Wilks λ = 0.742, F2,182 = 31.61, p < 0.001) after controlling for age, body mass index and childhood trauma. In post-hoc comparisons, men with OCD had lower mtDNAcn than controls (p < 0.001), but we found no between-group difference for telomere length (p = 0.55). Women with OCD had a significantly lower mtDNAcn (p < 0.001) and shortened telomere length (p = 0.023) compared to controls. Moreover, the lower mtDNAcn shown in the OCD group was significantly correlated with an increase in systemic inflammation for both sexes, as measured by neutrophil-to-lymphocyte ratio.The present cross-sectional design did not allow us to infer a causal relationship between OCD disease status and cellular aging markers.The present study is, to our knowledge, the first to demonstrate alterations in mtDNAcn and telomere shortening in OCD. These results suggest that aging-associated molecular mechanisms may be important in the pathophysiology of OCD." @default.
• W3184752240 created "2021-08-02" @default.
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• W3184752240 date "2021-07-01" @default.
• W3184752240 modified "2023-09-30" @default.
• W3184752240 title "Alterations of cellular aging markers in obsessive–compulsive disorder: mitochondrial DNA copy number and telomere length" @default.
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• W3184752240 doi "https://doi.org/10.1503/jpn.200238" @default.
• W3184752240 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8519490" @default.
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