Document Detail


Treatment-induced diabetic neuropathy: a reversible painful autonomic neuropathy.
MedLine Citation:
PMID:  20437589     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To describe the natural history, clinical, neurophysiological, and histological features, and outcomes of diabetic patients presenting with acute painful neuropathy associated with glycemic control, also referred to as insulin neuritis.
METHODS: Sixteen subjects presenting with acute painful neuropathy had neurological and retinal examinations, laboratory studies, autonomic testing, and pain assessments over 18 months. Eight subjects had skin biopsies for evaluation of intraepidermal nerve fiber density.
RESULTS: All subjects developed severe pain within 8 weeks of intensive glucose control. There was a high prevalence of autonomic cardiovascular, gastrointestinal, genitourinary, and sudomotor symptoms in all subjects. Orthostatic hypotension and parasympathetic dysfunction were seen in 69% of subjects. Retinopathy worsened in all subjects. Reduced intraepidermal nerve fiber density (IENFD) was seen in all tested subjects. After 18 months of glycemic control, there were substantial improvements in pain, autonomic symptoms, autonomic test results, and IENFD. Greater improvements were seen after 18 months in type 1 versus type 2 diabetic subjects in autonomic symptoms (cardiovascular p < 0.01; gastrointestinal p < 0.01; genitourinary p < 0.01) and autonomic function tests (p < 0.01, sympathetic and parasympathetic function tests).
INTERPRETATION: Treatment-induced neuropathy is characterized by acute, severe pain, peripheral nerve degeneration, and autonomic dysfunction after intensive glycemic control. The neuropathy occurred in parallel with worsening diabetic retinopathy, suggesting a common underlying pathophysiological mechanism. Clinical features and objective measures of small myelinated and unmyelinated nerve fibers can improve in these diabetic patients despite a prolonged history of poor glucose control, with greater improvement seen in patients with type 1 diabetes.
Authors:
Christopher H Gibbons; Roy Freeman
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Annals of neurology     Volume:  67     ISSN:  1531-8249     ISO Abbreviation:  Ann. Neurol.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-05-03     Completed Date:  2010-05-14     Revised Date:  2012-02-06    
Medline Journal Info:
Nlm Unique ID:  7707449     Medline TA:  Ann Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  534-41     Citation Subset:  IM    
Affiliation:
Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Autonomic Nervous System / physiopathology*
Blood Pressure / physiology
Diabetic Neuropathies / complications*
Female
Heart Rate / physiology
Humans
Longitudinal Studies
Male
Middle Aged
Nerve Fibers / pathology
Neuralgia / etiology*,  pathology*
Pain Measurement / methods
Questionnaires
Valsalva Maneuver / physiology
Grant Support
ID/Acronym/Agency:
K23 NS050209-03/NS/NINDS NIH HHS; K23 NS050209-04/NS/NINDS NIH HHS; K23 NS050209-05/NS/NINDS NIH HHS; K23NS050209/NS/NINDS NIH HHS; R01DK063296/DK/NIDDK NIH HHS
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