Abstract
OBJECTIVETo investigate changes in the foot muscle energy reserves in diabetic non-neuropathic and neuropathic patients.RESEARCH DESIGN AND METHODSWe measured the phosphocreatinine (PCr)/inorganic phosphate (Pi) ratio, total 31P concentration, and the lipid/water ratio in the muscles in the metatarsal head region using MRI spectroscopy in healthy control subjects and non-neuropathic and neuropathic diabetic patients.RESULTSThe PCr/Pi ratio was higher in the control subjects (3.23 ± 0.43) followed by the non-neuropathic group (2.61 ± 0.36), whereas it was lowest in the neuropathic group (0.60 ± 1.02) (P < 0.0001). There were no differences in total 31P concentration and lipid/water ratio between the control and non-neuropathic groups, but both measurements were different in the neuropathic group (P < 0.0001).CONCLUSIONSResting foot muscle energy reserves are affected before the development of peripheral diabetic neuropathy and are associated with the endothelial dysfunction and inflammation.
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