Introduction: Handgrip strength is associated with mild cognitive impairment. Tumor necrosis factor [TNF]-α and interleukin [IL]-6 were pro-inflammatory cytokines influencing the severity of initial neurological deficit. Visfatin is a novel adipokine and has a strong correlation with inflammation. The relationships of TNF-α, IL-6 and visfatin are not consistent, and no study has investigated them in the elderly patients with cognitive impairment.
Methods: This study included patients aged ≥75 years at the emergency department from August 2018 to February 2019. All patients underwent comprehensive geriatric assessment and blood tests for fasting plasma TNF-α, IL-6 and visfatin levels.
Results: We enrolled 106 elderly patients with a mean age of 87.3 years, including 62 (58.4%) patients in cognitive impairment group (Mini-Mental State Examination [MMSE] < 24) and 44 (41.5%) patients in the non-cognitive impairment group. Compared to the non-cognitive impairment group, the cognitive impairment group had significantly lower handgrip strength, and significantly higher TNF-α, IL-6 and visfatin levels. TNF-α positively correlated with IL-6. Both TNF-α and IL-6 negatively correlated with Barthel index and MMSE. Handgrip strength negatively correlated with TNF-α but positively correlated with Barthel index and MMSE scores. Backward and stepwise multiple logistic regression analyses showed that the independent predictor for cognitive impairment was handgrip strength and age.
Conclusion: The cognitive impairment group had significantly higher serum TNF-α, IL-6, and visfatin levels. The independent predictors of cognitive impairment were handgrip strength and age. Handgrip strength negatively correlated with TNF-α and IL-6 but positively with Barthel index and MMSE scores.
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| http://dx.doi.org/10.1016/j.exger.2020.111138 | DOI Listing |
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