ArticleMolecular pain2015
Impairments of the primary afferent nerves in a rat model of diabetic visceral hyposensitivity.
Article in Molecular pain, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Modulation of Sensory Nerve Function by Insulin: Possible Relevance to Pain, Inflammation and Axon Growth.International journal of molecular sciences · 2020Review
- Expression of aromatase in the rostral ventromedial medulla and its role in the regulation of visceral pain.CNS neuroscience & therapeutics · 2017Article
- Diabetes Mellitus and the Colon.Current treatment options in gastroenterology · 2017Review
- In Vitro Characterization of the Electrophysiological Properties of Colonic Afferent Fibers in Rats.Journal of visualized experiments : JoVE · 2017Article
- Antinociceptive interaction of gabapentin with minocycline in murine diabetic neuropathy.Inflammopharmacology · 2017Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDiabetic neuropathy in visceral organs such as the gastrointestinal (GI) tract is still poorly understood, despite that GI symptoms are among the most common diabetic complications. The present study was designed to explore the changes in visceral sensitivity and the underlying functional and morphological deficits of the sensory nerves in short-term diabetic rats. Here, we compared the colorectal distension (CRD)-induced visceromotor response (VMR, an index of visceral pain) in vivo, the mechanosensitivity of colonic afferents ex vivo as well as the expression of protein gene product (PGP) 9.5 and calcitonin gene-related peptide (CGRP) in colon between diabetic (3-6 weeks after streptozotocin injection) and control (age-matched vehicle injection) rats.
resultsVMR was markedly decreased in the diabetic compared to the control rats. There was a significant decrease in multiunit pelvic afferent nerve responses to ramp distension of the ex vivo colon and single unit analysis indicated that an impaired mechanosensitivity of low-threshold and wide dynamic range fibers may underlie the afferent hyposensitivity in the diabetic colon. Fewer PGP 9.5- or CGRP-immunoreactive fibers and lower protein level of PGP 9.5 were found in the colon of diabetic rats.
conclusionsThese observations revealed the distinctive feature of colonic neuropathy in short-term diabetic rats that is characterized by a diminished sensory innervation and a blunted mechanosensitivity of the remnant sensory nerves.
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