Teruhiro Yamasato

The relation between visceral adipose tissue accumulation and biochemical tests in university students.

Nobuyuki Miyatake, Michiko Kogashiwa, D. Wang, Shohei Kira et autres

We evaluated the visceral adipose tissue accumulation in university students in Okayama prefecture, Japan. Fifty-eight Japanese university students (10 men and 48 women, age 18.4 +/- 0.6 years)were enrolled in this study. Fat distribution was evaluated by visceral fat (V) and subcutaneous …

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Effects of Gastrectomy on Motility, Perfusion Pressure, and Caerulein-Induced Relaxation of Sphincter of Oddi in Dogs.

Takakazu Kobayashi, Toshio HOSOBA, Masataka Mori, HIROAKI MIMURA et autres

The effects of subtotal-gastrectomy (gastrectomy) on the spontaneous motility and caerulein-induced relaxation of the sphincter of Oddi (SO) were investigated in the dog. The spontaneous motility and the response to caerulein of the SO were recorded using perfusion method. The basal perfusion …

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Role of 5‐HT3 receptors in peristaltic reflex elicited by stroking the mucosa in the canine jejunum.

TOSHIAKI NEYA, Masatoshi Mizutani, Teruhiro Yamasato

1. The role played by the 5-HT3 receptor, a serotonin subtype receptor, in peristaltic reflexes was studied in dogs first given ketamine, then anaesthetized with urethane (1.0 g kg-1, I.V.) and alpha-chloralose (100 mg kg-1, I.V.). The jejunal loop was partitioned into …

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Histochemical study of the lumbar colonic nerve supply to the internal anal sphincter and its physiological role in dogs

Masatoshi Mizutani, TOSHIAKI NEYA, Katsuhiko Ono, Teruhiro Yamasato et autres

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Interaction of myenteric neurons and extrinsic nerves in the intestinal inhibitory response induced by mesenteric nerve stimulation.

Teruhiro Yamasato, S. Nakayama

Effects of the mesenteric nerve stimulation (MNS) on the twitch contraction induced by field stimulation were investigated regarding the relationship between myenteric neurons and extrinsic cholinergic nerves in the guinea-pig mesenteric nerve-ileal preparation. The twitch contraction was inhibited after MNS. The inhibition …

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Antroduodenal coordinated contractions as studied by chemical ablation of myenteric neurons in the gastroduodenal junctional zone.

Satoko Matsuo, TOSHIAKI NEYA, Teruhiro Yamasato

Antroduodenal contractions were studied in rat preparations. Augmented duodenal contractions occurred spontaneously in coordination with antral contractions in normal and saline-pretreated preparations. The coordination did not occur when muscle layers and the myenteric plexus were transversely cut at the duodenum just anal …

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Effects of gabexate mesilate (FOY) on the gallbladder, sphincter of Oddi and duodenum of the normal and gastorectomized dogs.

Teruhiro Yamasato, Masanobu Mori, Hisashi MIMURA, Keisuke Hamazaki et autres

FOY induced a dose-dependent inhibitory response on the gallbladder, sphincter of Oddi and duodenum of normal and gastrectomized dogs, although it induced an excitatory response in some dogs. The inhibitory response was not reduced or terminated by pretreatment with atropine, guanethidine, hexamethonium …

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Neural regulation of the interrelation between haustral and taenial motility in the rabbit proximal colon.

Y Watanabe, Teruhiro Yamasato, S. Nakayama

Neural regulation of the motility between the haustra and taenia coli was studied in the isolated rabbit proximal colon. Four types of haustral and taenial preparations were used: the haustral strip without the taenia coli (type 1), the haustral strip including the …

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Participation of the parasympathetic and sympathetic nerves in regulation of gallbladder motility in the dog.

Teruhiro Yamasato, Shoji F. Nakayama

The participation of the parasympathetic and sympathetic nerves in the canine gallbladder motility was examined. Efferent stimulation of the parasympathetic (vagus) and sympathetic (celiac) nerves caused contraction or inhibition of the neck, body and fundus of the gallbladder. The contractile response induced …

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Regulation of bile duct motility by vagus and sympathetic nerves in the pigeon.

TOSHIAKI NEYA, Teruhiro Yamasato, Masatoshi Mizutani, S. Nakayama

Effects of stimulation of the vagus and sympathetic nerves on bile duct peristalses were studied in pigeons anesthetized with urethane. Vagus stimulation increased the frequency of peristalses. Atropine, hexamethonium and tetrodotoxin abolished this excitatory effect. After atropine, inhibition of peristalses sensitive to …

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Effects of neurotensin on the motility of the isolated gallbladder, bile duct and ampulla in guinea-pigs

Teruhiro Yamasato, Sosogu NAKAYAMA

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Effects of afferent stimulation of the lingual nerve on gastrointestinal motility in the rat.

Mayumi Sugimoto, Teruhiro Yamasato, S. Nakayama

Effects of afferent stimulation of the lingual nerve (LNAS) on gastrointestinal motility and the reflex pathways which mediate the response to LNAS were investigated in rats. LNAS induced excitatory, inhibitory or biphasic responses in the stomach, duodenum and proximal colon. These responses …