Cited by 100Peripheral Neuropathies and DisordersHereditary Neurological DisordersPeripheral Nerve Disorders

Value of the oral glucose tolerance test in the evaluation of chronic idiopathic axonal polyneuropathy

Hoffman-Snyder, Charlene, Smith, Benn E., Ross, Mark A., Hernandez, Jose, Bosch, E. Peter·2006·Archives of Neurology

Abstract

BACKGROUND: An underlying cause is found in only 7% to 30% of patients with chronic idiopathic axonal polyneuropathy (CIAP). Diabetes mellitus, inherited disorders, toxin exposure, and primary amyloidosis are the most common identified causes of sensory neuropathies affecting both large and small myelinated fibers. Undiagnosed impaired fasting glucose metabolism has been associated with CIAP at a higher frequency rate than in the general population. This increased prevalence rate was identified using the 2-hour oral glucose tolerance test (2h-OGTT) and a previous version of the American Diabetes Association (ADA) guidelines. OBJECTIVES: To determine the prevalence of abnormal fasting glucose metabolism in patients with CIAP and to compare the value of determining fasting plasma glucose levels using revised (2003) ADA criteria with the 2h-OGTT for predicting abnormal fasting glucose metabolism. PATIENTS: In this 24-month retrospective study, 100 consecutive patients were identified with no known cause for CIAP, including diabetes mellitus, between January 2003 and January 2005. All had both a fasting plasma glucose test and a 2h-OGTT in addition to a complete neurological examination. Neurophysiological studies, computer-assisted sensory examination, and quantitative sudomotor axonal reflex testing were used to classify CIAP into subtypes according to nerve fiber involvement. RESULTS: The prevalence of undiagnosed abnormal fasting glucose metabolism was found to be nearly 2-fold higher (62%) in patients with CIAP than in similar age-matched general population groups (33%). Using the 2003 revised ADA criteria, 39 patients (39%) had abnormal fasting plasma glucose metabolism (36 with impaired fasting glucose, 3 with diabetes mellitus), while the 2h-OGTT provided an even higher diagnostic rate of 62% (62 patients; P<.001) of impaired fasting glucose metabolism (38 with impaired glucose tolerance, 24 with diabetes mellitus). The abnormal glucose metabolism rates were found to be similar across the 3 subtypes (sensorimotor, pure sensory, and small-fiber neuropathy) of CIAP (P = .60, .72, and .61). CONCLUSIONS: This study adds to emerging evidence that abnormal glucose metabolism may be a risk factor for CIAP. Even with revised (2003) ADA criteria, the 2h-OGTT provides additional diagnostic information to the health care professional in the evaluation of CIAP. Subtypes of CIAP are equally likely to have abnormal glucose metabolism.

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Crossref · 10.1001/archneur.63.8.noc50336

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  • Evidence is accumulating on increased prevalence of idiopathic polyneuropathy among prediabetic individuals, with IGT being more strongly related to painful than non-painful neuropathy.

    “Finally, evidence is accumulating on increased prevalence of idiopathic polyneuropathy (eg, idiopathic sensory/painful neuropathy,73–78 and sensory/small fibre only neuropathy)73,75,78 among prediabetic individuals with IGT being more strongly related to painful than non-painful neuropathy.73,75,78”

    From Prediabetes: a high-risk state for diabetes development (2012) · cites this paper as [73]

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Authors
Hoffman-Snyder, C., Smith, B. E., Ross, M. A., Hernandez, J., & Bosch, E. P.
Affiliations
Mayo Clinic (US)
Venue
Archives of Neurology
Published
2006-08-01
Volume
63
Issue
8
Pages
1075
ISSN
0003-9942 (ISSN-L)
OpenAlex
W2109273088
Cited by
100
References
23
Citations by year
2026: 2 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 6 · 2018: 5 · 2017: 10 · 2016: 5 · 2015: 7 · 2014: 5 · 2013: 4 · 2012: 10
FWCI
5.55
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Neurology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Peripheral Neuropathies and Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Peripheral Nerve Disorders
Keywords
chronic idiopathic axonal polyneuropathy, oral glucose tolerance test, impaired fasting glucose, impaired glucose tolerance, diabetes mellitus, fasting blood glucose, ADA diagnostic criteria, small fiber neuropathy, sensorimotor neuropathy
MeSH terms
Aged, Axons, Blood Glucose, Chronic Disease, Female, Glucose Tolerance Test, Humans, Male, Middle Aged, Polyneuropathies, Predictive Value of Tests, Retrospective Studies, Prevalence

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