Endoneurial capillary abnormalities in mild human diabetic neuropathy

R. A. Malik, A. Veves, E. A. Masson, A. K. Sharma, A. K. Ah-See, W. Schady, R. H. Lye, A. J M Boulton

    Research output: Contribution to journalArticlepeer-review


    Microvascular factors have been implicated in the pathogenesis of human diabetic neuropathy. The extent of microangiopathy was assessed in 15 diabetic patients with clinically mild neuropathy and compared with eight age matched control subjects. Endoneurial capillary density was reduced (p <0.04) and correlated significantly with reduced myelinated fibre density (p <0.01). Both basement membrane area (p <0.0001) and endothelial cell profile number per capillary (p <0.002) were significantly increased in diabetic patients and correlated significantly with both neurophysiological and neuropathological measures of neuropathic severity. There was no evidence of endothelial cell hypertrophy as assessed by either cross sectional endothelial cell area or a reduction in luminal size. Furthermore, the percentage of closed vessels did not differ between diabetic patients and control subjects and failed to relate to measures of neuropathic severity. It was concluded that microvascular abnormalities are prominent in patients with clinically mild human diabetic neuropathy, and that these data provide further support for the role of endoneurial capillary disease in the development of this condition.
    Original languageEnglish
    Pages (from-to)557-561
    Number of pages4
    JournalJournal of Neurology, Neurosurgery and Psychiatry
    Issue number7
    Publication statusPublished - 1992


    • Adolescent
    • Adult
    • Aged
    • Aged, 80 and over
    • Biopsy
    • pathology: Capillaries
    • pathology: Diabetic Angiopathies
    • pathology: Diabetic Neuropathies
    • pathology: Endothelium, Vascular
    • Female
    • Humans
    • Male
    • Microscopy, Electron
    • Middle Aged
    • physiology: Motor Neurons
    • pathology: Nerve Fibers, Myelinated
    • blood supply: Peripheral Nerves
    • physiopathology: Peroneal Nerve
    • physiopathology: Sensory Receptor Cells
    • physiology: Sensory Thresholds
    • blood supply: Sural Nerve


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