Gastroduodenal fistula caused by ingested magnets.
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Child↗
Biomedical subjects
Akihito Enjoji
Publications and source records attributed to Akihito Enjoji.
Cyst formation of duodenal heterotopic pancreas accompanied by pancreas divisum.
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Abdominal Pain↗
Characterization of GABAB receptor in the human colon.
Characterization of the GABA(B) receptor in the human colon was performed by the reverse transcription-polymerase chain reaction (RT-PCR). mRNAs for both subunits of the GABA(B) receptor, GABA(B1) and GABA(B2), were detected in the human colon. The GABA(B1(e)) isoform was detected in the human colon, but not in the brain, and the other isoforms, except GABA(B1(d)), were detected in both tissues. Thus, the GABA(B) receptor may be present as a heterodimer with subunits of GABA(B1) and GABA(B2) in the human colon.
Animals↗
Characterization of GABA(B) receptors involved in inhibition of motility associated with acetylcholine release in the dog small intestine: possible existence of a heterodimer of GABA(B1) and GABA(B2) subunits.
Characterization of the gamma-aminobutyric acid (GABA)(B) receptor involved in the motility of dog small intestine was analyzed by application of the microdialysis method to the small intestine of the whole body of the dog. The reverse transcription-polymerase chain reaction (RT-PCR) was used. Intraarterial administration of muscimol induced acceleration of motility associated with acetylcholine (ACh) release, these responses being antagonized by bicuculline. Intraarterial administration of baclofen induced inhibition of motility associated with ACh release, these responses being antagonized by CGP62349. GABA induced inhibition of motility associated with decrease in ACh release. CGP62349 alone induced acceleration of motility associated with increase in ACh release. RT-PCR revealed the presence of mRNAs for both subunits of GABA(B) receptor, GABA(B1) and GABA(B2), in the dog small intestine, although GABA(B1) subunits were 6 isoforms of GABA(B1) (GABA(B1(a)) - GABA(B1(g))), except GABA(B1(d)). Thus, the GABA(B) receptor located at cholinergic neurons as a heterodimer with subunits of GABA(B1) and GABA(B2) in the dog small intestine operates predominantly relative to the GABA(A) receptor in physiological motility.
Acetylcholine↗
In vivo assessment of acceleration of motor activity associated with acetylcholine release via 5-hydroxytryptamine4 receptor in dog intestine.
Effect of mosapride, a benzamide, on the motor activity associated with the release of endogenous acetylcholine (ACh) from enteric neurons was examined in the ileum of anesthetized dogs using an in vivo microdialysis method and compared with the effect of 5-hydroxytryptamine (5-HT). Intraarterial administration of 5-HT accelerated intestinal motor activity and increased the concentration of dialysate ACh, and the responses were inhibited by SB204070, a specific 5-HT4-receptor antagonist, but were apparently not affected by methiothepin, ketanserin and granisetron. Intraarterial administration of mosapride, a prokinetic benzamide, accelerated intestinal motor activity and the concentration of dialysate ACh increased. The effects of mosapride were antagonized by SB204070. Specific [125I]SB207710 binding was observed in the myenteric and submucosal plexuses and muscle layers of dog ileum by in vitro receptor autoradiography. High densities of [125I]SB207710 binding sites were detected in the myenteric and submucosal plexuses. Mosapride as well as SB204070 inhibited [125I]SB207710 binding. Thus, in the whole body of dogs, 5-HT and mosapride accelerated the intestinal motor activity due to the increases in ACh release mediated by stimulation of the 5-HT4 receptor.
Acetylcholine↗
Combination chemotherapy of 5-fluorouracil and low-dose cisplatin in advanced and recurrent gastric cancer: a multicenter retrospective study in Nagasaki, Japan.
BACKGROUND: Combination therapy consisting of 5-fluorouracil (5-FU) and cisplatin (CDDP) has been shown to be effective in the treatment of gastric cancer. PATIENTS AND METHODS: The efficacy and safety of the combination therapy consisting of 5-FU and low-dose CDDP were assessed in 37 patients with advanced or recurrent gastric cancer. One course consisted of continuous drip infusion of 5-FU (330 mg/m2/day) on days 1-5 (7) + 5-day drip infusion of CDDP (5 mg/m2/day) for 4 weeks. The patients were treated with at least one course. RESULTS: The complete response (CR) + partial response (PR) rate was 35.1% and median survival-time (MST) was 7.1 months. There were no grade 3 or more adverse effects. CONCLUSION: Our results suggest that this mode of combination therapy leads to a fairly favorable outcome with few adverse effects in patients with advanced and recurrent gastric cancer.
Adult↗