Abstract:
BACKGROUND/AIMS:Suicidal behavior (SB) in bipolar disorder (BD) is a complex multifactorial event resulting from an interaction of genetic, neurobiological and psychosocial factors. Recent studies identified new possible mechanisms, suggesting a role for sirtuins (SIRTs 1-7), a family of nicotinamide adenine dinucleotide-dependent enzymes with a multifaceted role in the central nervous system. The aims of the present study were: (1) to investigate the effects of the rs10997870 SIRT1 gene variant on SB in BD; (2) to explore the effects of the same gene variant on specific depressive symptoms at the severest episode. METHODS:One hundred and eighty DSM-IV bipolar outpatients were enrolled in a naturalistic cohort study. The rs10997870 polymorphism within the SIRT1 gene was analyzed. RESULTS:An association between the GG genotype and SB was detected (lifetime: p = 0.015). Compared to other genotypes, GG carriers presented more frequently psychomotor agitation (p = 0.009) and a higher Hamilton Depression Rating Scale total score (p = 0.014) at the severest depressive episode. SB and psychomotor agitation were found to be associated with GG carriers and G allele in a multivariate analysis as well. CONCLUSION:Our findings suggest a role of the rs10997870 SIRT1 gene variant in SB amongst BD patients and its association with specific depressive symptoms. Despite a number of limitations of this exploratory study, our results may provide new insight into the mechanisms underlying SB in BD.
journal_name
Neuropsychobiologyjournal_title
Neuropsychobiologyauthors
Nivoli A,Porcelli S,Albani D,Forloni G,Fusco F,Colom F,Vieta E,Serretti Adoi
10.1159/000446921subject
Has Abstractpub_date
2016-01-01 00:00:00pages
1-7issue
1eissn
0302-282Xissn
1423-0224pii
000446921journal_volume
74pub_type
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