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Central processing of gut pain in diabetic patients with gastrointestinal symptoms.


ABSTRACT:

Objective

To evaluate the brain's responses to painful visceral and somatic stimuli in diabetic patients with gastrointestinal symptoms.

Research design and methods

The sensitivity to electrical esophageal and median nerve stimulations was assessed in 15 healthy volunteers and 14 type 1 diabetic patients with autonomic neuropathy and gastrointestinal symptoms using a euglycemic-hyperinsulinemic clamp. Evoked brain potentials were recorded.

Results

Patients had reduced sensitivity to esophageal (48%; P < 0.001) and median nerve (80%; P < 0.001) stimulations. They also had increased (8.8%; P = 0.007) and nonreproducible (P = 0.006) latencies of evoked potentials in response to esophageal stimulations, with 26% reduction in amplitude (P = 0.011). No potential differences were seen to median nerve stimulations. In diabetic patients, the topographic location of the first peak in potentials was more central (P < 0.001) and gastrointestinal symptoms correlated with characteristics of brain potentials (P = 0.049).

Conclusions

This study supports that diabetes induces changes in peripheral visceral nerves as well as in the central nervous system.

SUBMITTER: Frokjaer JB 

PROVIDER: S-EPMC2699738 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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Publications

Central processing of gut pain in diabetic patients with gastrointestinal symptoms.

Frøkjaer Jens Brøndum JB   Søfteland Eirik E   Graversen Carina C   Dimcevski Georg G   Egsgaard Line Lindhardt LL   Arendt-Nielsen Lars L   Drewes Asbjørn Mohr AM  

Diabetes care 20090414 7


<h4>Objective</h4>To evaluate the brain's responses to painful visceral and somatic stimuli in diabetic patients with gastrointestinal symptoms.<h4>Research design and methods</h4>The sensitivity to electrical esophageal and median nerve stimulations was assessed in 15 healthy volunteers and 14 type 1 diabetic patients with autonomic neuropathy and gastrointestinal symptoms using a euglycemic-hyperinsulinemic clamp. Evoked brain potentials were recorded.<h4>Results</h4>Patients had reduced sensi  ...[more]

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