Abstract
The mechanism by which lipid in the duodenum inhibits gastric emptying was investigated in awake rats fitted with chronic gastric and duodenal cannulas. Perfusion of the duodenum with lipid (Intralipid, 5 and 10%; total amount 50 and 100 mg) caused a significant inhibition (26 and 78%, respectively) of gastric emptying of a nonnutrient liquid (0.9% saline). Functional ablation of the capsaicin-sensitive vagal, but not the spinal, sensory innervation to the upper gastrointestinal tract significantly attenuated by 57% lipid- induced inhibition of gastric emptying. In intact rats, administration of a specific cholecystokinin (CCK)-A receptor antagonist, devazepide, significantly attenuated by 66% the response to lipid. Administration of devazepide in perivagal capsaicin-treated rats did not further reduce the response to lipid. These results suggest that lipid in the duodenum inhibits gastric emptying via a mechanism involving an action of CCK at type A receptors and capsaicin-sensitive vagal afferents.
| Original language | English (US) |
|---|---|
| Journal | American Journal of Physiology - Gastrointestinal and Liver Physiology |
| Volume | 267 |
| Issue number | 4 30-4 |
| State | Published - 1994 |
| Externally published | Yes |
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Keywords
- duodenum
- gastric motility
- sensory innervation
ASJC Scopus subject areas
- Physiology
- Gastroenterology
Cite this
Intestinal lipid inhibits gastric emptying via CCK and a vagal capsaicin- sensitive afferent pathway in rats. / Holzer, H. H.; Turkelson, C. M.; Solomon, T. E.; Raybould, Helen E.
In: American Journal of Physiology - Gastrointestinal and Liver Physiology, Vol. 267, No. 4 30-4, 1994.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Intestinal lipid inhibits gastric emptying via CCK and a vagal capsaicin- sensitive afferent pathway in rats
AU - Holzer, H. H.
AU - Turkelson, C. M.
AU - Solomon, T. E.
AU - Raybould, Helen E
PY - 1994
Y1 - 1994
N2 - The mechanism by which lipid in the duodenum inhibits gastric emptying was investigated in awake rats fitted with chronic gastric and duodenal cannulas. Perfusion of the duodenum with lipid (Intralipid, 5 and 10%; total amount 50 and 100 mg) caused a significant inhibition (26 and 78%, respectively) of gastric emptying of a nonnutrient liquid (0.9% saline). Functional ablation of the capsaicin-sensitive vagal, but not the spinal, sensory innervation to the upper gastrointestinal tract significantly attenuated by 57% lipid- induced inhibition of gastric emptying. In intact rats, administration of a specific cholecystokinin (CCK)-A receptor antagonist, devazepide, significantly attenuated by 66% the response to lipid. Administration of devazepide in perivagal capsaicin-treated rats did not further reduce the response to lipid. These results suggest that lipid in the duodenum inhibits gastric emptying via a mechanism involving an action of CCK at type A receptors and capsaicin-sensitive vagal afferents.
AB - The mechanism by which lipid in the duodenum inhibits gastric emptying was investigated in awake rats fitted with chronic gastric and duodenal cannulas. Perfusion of the duodenum with lipid (Intralipid, 5 and 10%; total amount 50 and 100 mg) caused a significant inhibition (26 and 78%, respectively) of gastric emptying of a nonnutrient liquid (0.9% saline). Functional ablation of the capsaicin-sensitive vagal, but not the spinal, sensory innervation to the upper gastrointestinal tract significantly attenuated by 57% lipid- induced inhibition of gastric emptying. In intact rats, administration of a specific cholecystokinin (CCK)-A receptor antagonist, devazepide, significantly attenuated by 66% the response to lipid. Administration of devazepide in perivagal capsaicin-treated rats did not further reduce the response to lipid. These results suggest that lipid in the duodenum inhibits gastric emptying via a mechanism involving an action of CCK at type A receptors and capsaicin-sensitive vagal afferents.
KW - duodenum
KW - gastric motility
KW - sensory innervation
UR - http://www.scopus.com/inward/record.url?scp=0027996595&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027996595&partnerID=8YFLogxK
M3 - Article
C2 - 7943327
AN - SCOPUS:0027996595
VL - 267
JO - American Journal of Physiology - Renal Fluid and Electrolyte Physiology
JF - American Journal of Physiology - Renal Fluid and Electrolyte Physiology
SN - 1931-857X
IS - 4 30-4
ER -