Abstract:Objective To observe the risk factors for cognitive impairment in patients with depression and the serum levels of homocysteine (Hcy), fibroblast growth factor 22 (FGF22), and high-sensitivity C-reactive protein (hs-CRP).Methods A total of 94 depression patients who were treated in the Department of Psychiatry at the 987th Hospital of the Joint Logistics Support Force between January 2021 and January 2023 were recruited as the observation group. Concurrently, 94 healthy individuals undergoing health examinations at the same hospital were selected as the control group. Based on the Mini-Mental State Examination (MMSE) scores, patients in the observation group were further divided into the non-cognitive impairment group (MMSE≥24, n =48) and the cognitive impairment group (MMSE<24, n =46). Clinical data of all subjects were collected and analyzed. Multivariate logistic regression models were used to analyze influencing factors.Results No statistically significant differences in gender distribution, age, body mass index, smoking history, drinking history, hypertension, diabetes, coronary heart disease, hyperlipidemia, systolic blood pressure, or diastolic blood pressure were observed among the control group, the non-cognitive impairment group, and the cognitive impairment group (P >0.05). However, the cognitive impairment group had significantly higher levels of Hcy and hs-CRP compared to the non-cognitive impairment group and the control group (P <0.05). Conversely, levels of FGF22 were significantly lower in the cognitive impairment group than in the other two groups (P <0.05). Multivariate logistic regression analysis revealed that levels of Hcy [O^R =1.654 (95% CI: 1.232, 3.354)], levels of hs-CRP [O^R =1.446 (95% CI: 1.232, 1.698)], and levels of FGF22 [O^R =1.729 (95% CI: 1.130, 2.646)] were all independent risk factors for cognitive impairment in patients with depression (P <0.05).Conclusion Serum levels of Hcy, FGF22, and hs-CRP are independent risk factors for cognitive impairment in patients with depression, serving as valuable reference indicators for clinical practice.