期刊
DIABETES-METABOLISM RESEARCH AND REVIEWS
卷 37, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/dmrr.3361
关键词
diabetic neuropathy; small fibre neuropathy; vitamin D; Painful neuropathy
资金
- Center for Scientific Review [R105991]
- Juvenile Diabetes Research Foundation International [8-2008-362]
- National Institutes of Health
The study suggests that vitamin D deficiency and insufficiency are associated with painful diabetic neuropathy, with more severe symptoms in patients with painful neuropathy compared to painless neuropathy. The serum 25(OH)D levels were significantly lower in patients with painful neuropathy compared to those with painless neuropathy and healthy controls.
Background The aetiology of painful diabetic neuropathy is unclear. We have evaluated vitamin D levels in diabetic patients with and without painful neuropathy. Methods Forty-three patients with type 1 diabetes and painless (DPN) (n = 20) or painful (PDN) (n = 23) neuropathy and 14 non-diabetic healthy control subjects (C) underwent assessment of neurologic deficits, quantitative sensory testing (QST), electrophysiology, skin biopsy, corneal confocal microscopy (CCM) and measurement of serum 25(OH)D. Results There were no significant differences for age, BMI, HbA(1c), lipids, neurological deficits, QST, electrophysiology, intra-epidermal nerve fibre density (IENFD) and corneal nerve morphology between patients with DPN and PDN. Both positive (hyperalgesia and allodynia) and negative symptoms (paraesthesia and numbness) of diabetic neuropathy were greater in PDN compared with DPN (P= .009 andP= .02, respectively). Serum 25(OH)D levels were significantly lower in PDN (24.0 +/- 14.1 ng/mL) compared with DPN (34.6 +/- 15.0 ng/mL,P= .01) and controls (34.1 +/- 8.6 ng/mL,P= .03). The odds ratio in favour of painful diabetic neuropathy was 9.8 [P= .003 (95% CI, 2.2-76.4)] for vitamin D deficiency (<20 ng/mL) and 4.4 [P= .03 (95% CI, 1.1-19.8)] for vitamin D insufficiency (<30 ng/mL). Conclusions This study suggests that vitamin D deficiency and insufficiency are associated with painful diabetic neuropathy.
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