Variation of Prolidase Activity: A Predictor of Neuropathy due to Diabetes Mellitus?
Journal Title: Journal of Medical Science And clinical Research - Year 2017, Vol 5, Issue 2
Abstract
Prolidase is a member of the matrix metalloproteinase family responsible for collagen turnover which is implicated in the pathogenesis of diabetic neuropathy (DN). 50 (F-16, M-34) subjects suffering from T2DM, 46 subjects (F-21, M-25) with DN and 50 (F-19, M-31) healthy volunteers were selected to evaluate if there is any role of altered plasma prolidase activity in the development of diabetic neuropathy. HOMA-IR was applied for estimation of insulin resistance and NCV was performed to confirm the subjects of neuropathy. Estimation of prolidase activity was based on the principle proposed by Myara et al. (1984).No significant correlation between prolidase activity and HOMA-IR in the control group and group 1 categorized as patients of T2DM without any microvascular complications was found statistically. However in patients of T2DM with neuropathy (group 2) we found a significant correlation (r=0.324, p=0.028). Independent sample t-test between healthy control and group1 reveals statistically significant change of mean levels of HOMA IR (t=7.174, p<0.001) but not of prolidase (t=1.174, p=0.243) activity. Using t-test again between group 1 and 2 we found that the parameters HOMA-IR (t=4.643, p<0.001) and prolidase (t=5.968, p<0.001) were significantly higher in group 2 than in group 1. These findings imply a strong association between insulin resistance and increased collagen turnover in T2DM. ANOVA was performed and a strong statistical association was found in case of HOMA-IR (F=50.266, p<0.001) and prolidase activity (F=31.006, p<0.001) among different groups. These findings can hypothesize that collagen turnover and increased insulin resistance are possibly the underlying pathogenic mechanisms for the development of neuropathy caused by diabetes
Authors and Affiliations
Dr Jayanta Kumar Rout
Keywords
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