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糖尿病足皮肤微循环和肌肉代谢的早期变化
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作者 Greenman R.L. Panasyuk S. +1 位作者 a. veves 党倩丽 《世界核心医学期刊文摘(皮肤病学分册)》 2006年第2期2-3,共2页
Background: Changes in the large vessels and microcirculation of the diabetic foot are important in the development of foot ulceration and subsequent failure to heal existing ulcers. We investigated whether oxygen del... Background: Changes in the large vessels and microcirculation of the diabetic foot are important in the development of foot ulceration and subsequent failure to heal existing ulcers. We investigated whether oxygen delivery and muscle metabolism of the lower extremity were factors in diabetic foot disease. Methods: We studied 108 patients (21 control individuals who did not have diabetes, 36 patients with diabetes who did not have neuropathy, and 51 patients with both diabetes and neuropathy). We used medical hyper spectral imaging (MHSI) to investigate the haemoglobin saturation (SHSIO2 ; % of oxyhaemoglobin in total haemoglobin [the sum of oxyhaemoglobin and deoxyhaemoglobin]) in the forearm and foot; we also used 31P- MRI scans to study the cellular metabolism of the foot muscles by measuring the concentrations of inorganic phosphate and phosphocreatine and calculating the ratio of inorganic phosphate to phosphocreatine (Pi/PCr). Findings: The forearm SHSIO2 during resting was different in all three groups, with the highest value in controls (mean 42 [SD 17]), followed by the non- neuropathic (32 [8]) and neuropathic (28 [8]) groups (p<0. 0001). In the foot at resting,SHSIO2 was higher in the control (38 [22]) and non- neuropathic groups (37 [12]) than in the neuropathic group (30 [12]; p=0. 027). The Pi/PCr ratio was higher in the non- neuropathic (0. 41 [0. 10]) and neuropathic groups (0. 58 [0. 26]) than in controls (0. 20 [0. 06]; p<0. 0001). Interpretation: Our results indicate that tissue SHSIO2 is reduced in the skin of patients with diabetes, and that this impairment is accentuated in the presence of neuropathy in the diabetic foot. Additionally, energy reserves of the foot muscles are reduced in the presence of diabetes, suggesting that microcirculation could be a major reason for this difference. 展开更多
关键词 皮肤微循环 足部溃疡 氧合血红蛋白 磷酸肌酸 去氧血红蛋白 超光谱成像仪 无机磷酸盐 微循环障碍
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糖尿病足皮肤微循环和肌肉代谢的早期改变
2
作者 Greenman R.L. Panasyuk S. +1 位作者 a. veves 郭俊 《世界核心医学期刊文摘(神经病学分册)》 2006年第3期5-6,共2页
Background: Changes in the large vessels and microcirculation of the diabetic foot are important in the development of foot ulceration and subsequent failure to heal existing ulcers. We investigated whether oxygen del... Background: Changes in the large vessels and microcirculation of the diabetic foot are important in the development of foot ulceration and subsequent failure to heal existing ulcers. We investigated whether oxygen delivery and muscle metabolism of the lower extremity were factors in diabetic foot disease. Methods: We studied 108 patients (21 control individuals who did not have diabetes, 36 patients with diabetes who did not have neuropathy, and 51 patients with both diabetes and neuropathy). We used medical hyperspectral imaging (MHSI) to investigate the haemoglobin saturation (SHSIO2; %of oxyhaemoglobin in total haemoglobin [the sum of oxyhaemoglobin and deoxyhaemoglobin]) in the forearm and foot; we also used 31P-MRI scans to study the cellular metabolism of the foot muscles by measuring the concentrations of inorganic phosphate and phosphocreatine and calculat ing the ratio of inorganic phosphate to phosphocreatine (Pi/PCr). Findings: The forearm SHSIO2 during resting was different in all three groups, with the highest value in controls (mean 42 [SD 17]), followed by the non-neuropathic (32 [8]) and neuropathic (28 [8]) groups (p < 0.0001). In the foot at resting, SHSIO2 was higher in the control (38 [22]) and non-neuropathic groups (37 [12]) than in the neuropathic group (30 [12]; p=0.027). The Pi/PCr ratio was higher in the non -neuropathic (0.41 [0.10]) and neuropathic groups (0.58 [0.26]) than in controls (0.20 [0.06]; p < 0.0001). Interpretation: Our results indicate that tissue SHSIO2 is reduced in the skin of patients with diabetes, and that this impairment is accentuated in the presence of neuropathy in the diabetic foot. Additionally, energy reserves of the foot muscles are reduced in the presence of diabetes, suggesting that microcirculation could be a major reason for this difference. 展开更多
关键词 皮肤微循环 足部溃疡 氧合血红蛋白 磷酸肌酸 去氧血红蛋白 氧输送 无机磷酸盐 足部病变 细胞代谢
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