Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats.

Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Research Abstract Details 

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Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Abstract Text:

K Nishikawa,K Amagase,K Takeuchi,K Nishikawa,K Amagase,K Takeuchi,

Dopamine, as a neurotransmitter in the brain, is also present in the gastroduodenal mucosa and has been implicated in several functions in these tissues. Recent study showed that dopamine acts as a potent antitumor/angiogenic activity through suppression of growth factor expression. Since growth factors are known to play a crucial role in the mechanism of wound healing, it is possible that dopamine has a deleterious influence on the healing of gastric ulcers. In the present study, we examined the effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Gastric ulcers were induced in male SD rats by serosal application of acetic acid for 60 sec. Dopamine was subcutaneously given twice daily for 7 days, starting 3 days after ulceration. In some case, the osmotic mini-pump filled with dopamine was implanted into the dorsal subcutaneous space in rats for 7 days. VEGF and Flk-1 mRNA expressions were determined by RT-PCR. Dopamine (3, 10 and 30 mg/kg) given subcutaneously for 7 days did not significantly affect the healing of gastric ulcers. The expression of VEGF and Flk-1 mRNA in the ulcerated mucosa was up-regulated after ulceration, and these expressions were not affected by dopamine. Likewise, dopamine (0.6 mg/kg/hr) infused continuously using the osmotic mini-pump also had no effect on the healing of these ulcers. These results suggest that dopamine, although reportedly shows a potent antitumor/angiogenic activity, does not cause any influence on the healing of the pre-existing gastric ulcers in rats.

Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Publishing Authors By Initials

K Nishikawa,K Amagase,K Takeuchi,K Nishikawa,K Amagase,K Takeuchi,

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Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Inflammopharmacology

VOLUME: 15

Page Numbers: 209-13

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ISSN: 0925-4692

DAY: 18

MONTH: Oct

YEAR: 2007

Effect of dopamine on the healing of acetic acid-induced gastric ulcers in rats. Information

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LANGUAGE: eng

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AFFILIATION: Department of Pharmacology and Experimental Therapeutics, Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8414, Japan.

Country: Switzerland

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MEDLINETA: Inflammopharmacology

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