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Biomedical subjects

M Takeuchi

Publications and source records attributed to M Takeuchi.

At least 1,063 records · Page 59Linked to original sources
PubMed1977

[24 hour recording of gastric movements in the conscious dog (author's transl)].

Gastric movements were monitored in five conscious dogs weighing 9 to 13 kg by extraluminal force transducers (EFTs) which were independently developed and constructed in our own laboratory. After chronically implanting EFTs both in the canine gastric body and antrum we succeeded in making continuous recordings of their movements over several days. Dogs fed once a day with regular meals showed a circadian rhythm which was divided into three phases; digestive, intermediate, and an interdigestive phase. The digestive phase, which continued for about 8 to 10 hours after feeding, was characterized by a lack of movement in the body and repetitive rhythmical contractions having a rather small amplitude in the antrum. The interdigestive phase was distinguished from other phases by a peculiar sequence of gastric movements (interdigestive contractions) which did not make their appearance until 16 hours after feeding. These interdigestive contractions were the highest amplitude contractions to occur in both the body and antrum during the day. They continued for 70 minutes and repetitively recurred after intervening quiet periods of about 22 minutes. The intermediate phase was the period interposed between the digestive and interdigestive phase.

Animals↗
PubMed1976

Leukemias and vaginal tumors induced in female Donryu rats by continuous administration of 1-butyl-3,3-dimethyl-1-nitrosourea in the drinking water.

Three groups of Donryu rats, each consisting of 36 females, were continuously given solutions of 1-butyl-3,3-dimethyl-1-nitrosourea as drinking water (400 ppm for group A, 200 ppm for group B 100 ppm for group C). Of the 100 rats that survived at least 122 experimental days, 64 developed leukemia and 38 had vaginal tumors. Leukemias were preponderant in animals of groups A and B; vaginal tumors appeared in group C.

Animals↗
PubMed1976

Right ovarian vein syndrome with contralateral ovarian cyst.

A 39-year-old woman with right ovarian vein syndrome accompanied by contralateral ovarian cyst is reported. Removal of the left ovarian cyst with right ureterolysis for removal of the mechanical obstruction gave a good result. It is concluded that the etiology in this case was compression of the ureter by the enlarged ovarian vein, which had an increased blood flow from contralateral venous anastomose.

Adult↗