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Association of sarcopenia and muscle mass with both peripheral neuropathy and nerve function in patients with type 2
Yongze Zhang1, Ximei Shen1, Lanlan He2
1Department of Endocrinology, the First Affiliated Hospital of Fujian Medical University, 20 Cha Zhong Road, Fuzhou, Fujian 350005, China; Diabetes Research Institute of Fujian Province, 20 Cha Zhong Road, Fuzhou, Fujian 350005, China.
Aim:
This study aimed to investigate the association of sarcopenia and muscle mass with both peripheral neuropathy and nerve function in type 2 diabetes mellitus.
Methods:
A total of 1794 patients (937 men and 857 women) with type 2 diabetes, with a mean age of 60.22 years, were enrolled for a cross-sectional study; of these, 183 patients were enrolled for a follow-up study with a median follow-up of 2.7 years. All participants underwent nerve conduction studies and muscle mass index (ASM/HT2) measurements. The composite Z scores for the sensory nerve conduction velocity (SCV) and the motor nerve conduction velocity (MCV) were calculated. The changes in ASM/HT2, SCV, and MCV were calculated from the measurements nearly 2 years apart and classified into three groups: a decrease in ASM/HT2 of >3%, a minor change within ±3%, and an increase in ASM/HT2 of >3%.
Results:
The ASM/HT2 of men was positively associated with the composite Z scores of MCV and SCV, and sarcopenia highly correlated with DPN after adjusting for confounding factors. The optimal cutoff point for ASM/HT2 that indicated DPN was 7.09 kg/m2. Furthermore, increases in ASM/HT2 independently predicted a greater benefit of MCV and SCV increment outcomes, whereas a minor change in ASM/HT2 only significantly associated with lower benefit in terms of SCV increment. However, this phenomenon was not observed in women.
Conclusions:
Sarcopenia and DPN exhibited a close association. The increased muscle mass improved the partial MCVs and SCVs. However, a sex-related discrepancy was observed in this phenomenon.
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