医学
外膜
腓肠神经
血流动力学
糖尿病神经病变
多发性神经病
血流
糖尿病
麻醉
发病机制
周围神经病变
外科
内科学
内分泌学
坐骨神经
作者
Simon Eaton,Nigel Harris,Siti Fatimah Ibrahim,Ka Patel,F Selmi,Matthias Radatz,J. D. Ward,Solomon Tesfaye
出处
期刊:Diabetologia
[Springer Nature]
日期:2003-07-01
卷期号:46 (7): 934-939
被引量:60
标识
DOI:10.1007/s00125-003-1127-3
摘要
The pathogenesis of painful diabetic neuropathy remains unknown. As a consequence we still do not have any effective, rational treatments and a greater understanding of the mechanisms is urgently required. Previous studies have shown no consistent morphological differences in the nerves of patients with and without painful neuropathy. The aim of this study was to compare epineurial haemodynamics in patients with chronic painful and painless neuropathy.The techniques of microlightguide spectrophotometry and fluorescein angiography were used to measure epineurial intravascular oxygen saturation and blood flow respectively. Eleven patients with painful and eight with painless neuropathy were studied, with the groups matched carefully in terms of severity of neuropathy and diabetes control.Intravascular oxygen saturation was higher in the painful neuropathy group compared to those without pain (median 73.8% vs 67.7%, respectively; p=0.021). Fluorescein rise time was also faster in those with painful symptoms (median 18.3 s vs 53.6 s; p=0.046) indicating higher epineurial blood flow in these subjects.These results indicate that there are distinct differences in haemodynamics within the epineurium of the sural nerve in subjects with painful and painless neuropathy. Haemodynamic factors could therefore have an important role in the pathogenesis of neuropathic pain and might offer further insight into potential treatments for this distressing condition.
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