TY - JOUR PY - 2021// TI - Pro-inflammatory cytokines and suicidal behavior among patients with bipolar I disorder JO - Journal of psychiatric research A1 - Huang, Mao-Hsuan A1 - Chen, Mu-Hong A1 - Chan, Yee-Lam E. A1 - Li, Cheng-Ta A1 - Tsai, Shih-Jen A1 - Bai, Ya-Mei A1 - Su, Tung-Ping SP - ePub EP - ePub VL - ePub IS - ePub N2 - OBJECTIVE: Suicidal behavior and different mood states of bipolar I disorder (BD) have been shown to be associated with dysregulated proinflammatory cytokines. Only a few studies have examined the association between inflammation and SB in BD, and the association between proinflammatory cytokines, SB, and cognitive deficits in patients with BD remains unclear.

METHODS: 77 patients with BD and 61 age-/sex-matched healthy controls were recruited. Patients were divided into two groups: with suicidal ideation (SI; n = 21) and no SI (n = 56). SI was defined by a score of ≥1 in item 10 of Montgomery Åsberg Depression Rating Scale. Levels of proinflammatory cytokines, including soluble interleukin-6 receptor (sIL-6R), soluble tumor necrosis factor-α receptor type 1 (sTNF-αR1), and C-reactive protein (CRP), were measured, and cognitive function was assessed using 2-back task and Go/No-Go task.

RESULTS: Patients with SI had higher levels of sTNF-αR1 than those without SI and the controls (p = .004). BD patients with or without a history of suicide attempt had higher levels of CRP than the controls. SI was associated with serum levels of sTNF-αR1 and IL-6sR, even after additionally controlling for working memory and inhibitory control (p < .05).

CONCLUSION: This study indicates that serum levels of sTNF-αR1 have distinct differences between BD patients with or without SI, and our findings strengthen the hypothesis of a link between suicidal behavior and neuro-inflammation pathophysiology in BD.

Language: en

LA - en SN - 0022-3956 UR - http://dx.doi.org/10.1016/j.jpsychires.2021.11.030 ID - ref1 ER -