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Biomedical subjects

T Hebiguchi

Publications and source records attributed to T Hebiguchi.

24 records · Page 2Linked to original sources
PubMed1985

A muscle ablation sphincter to prevent diarrhea after total colectomy in puppies: a preliminary report.

Many adjunctive surgical techniques have been proposed to decrease diarrhea following total colectomy with an ileoanal anastomosis. A previously proposed method of longitudinal muscle ablation in canine small intestine to produce an "artificial sphincter" and increase transit time after massive small bowel resections has been applied to puppies who have had a total abdominal colectomy and ileoproctostomy. Total abdominal colectomy with ileoproctostomy at the level of the peritoneal reflection was performed in 6 mongrel puppies, aged 6-8 weeks. Two control puppies died within 2 weeks of the procedure with overwhelming diarrhea. Four experimental animals had "sphincters" (circumferential excision of a 1 cm length of longitudinal muscle) placed 5 cm proximal to the ileoproctostomy anastomosis. The puppies with colectomy plus sphincter were followed from 14 months to two years postoperatively and had intestinal transit times of 3-4 1/2 hours comparable to unoperated littermates. Intermittent postoperative barium enemas were performed and gross and histologic examination of the sphincters were carried out at necropsy. This muscle ablation technique when used in puppies with total abdominal colectomy and ileoproctostomy controls diarrhea, allows survival with normal growth and does not result in proximal small bowel enteritis.

Animals↗
PubMed1985

[Pathology of the anomalous choledocho-pancreatic junction--action of pancreatic juice on the biliary tract].

The mechanism of action of pancreatic juice on the biliary tract was investigated in a 5-year-old girl with choledochal cyst and animal models of the anomalous choledocho-pancreatic junction produced by pancreatico-cholecystostomy in 26 dogs. The results are as follows: Pancreatic enzymes are activated when bile and pancreatic juice are mixed in the biliary tract. Successively, lysolecithin and free fatty acids are produced by hydrolysis of lecithin in bile with phospholipase A2. These substances including phospholipase A2 destroy the mucosal barrier. The initial site receiving mucosal damage appears to be the epithelial apical cell membrane. The transfer of phospholipase A2 but not amylase from the biliary tract to the blood stream was suggested by comparing enzyme activity of portal and hepatic venous blood. The presence of some mutagenic substances in the contents of the choledochal cyst was confirmed by Ames assay and Rec-assay. This suggests that activated pancreatic enzymes and successively produced harmful substances in the anomalous choledocho-pancreatic junction are responsible for not only inflammatory but positively carcinogenic action on the biliary tract. In conclusion, the anomalous choledocho-pancreatic junction requires operative separation of the bile duct from the pancreatic duct despite the presence or absence of a choledochal cyst.

Animals↗
PubMed1981

Action of pancreatic juice on the bile duct: pathogenesis of congenital choledochal cyst.

Babitt was the first to suggest that the anomalous arrangement of the pancreatico-biliary ducts might be involved in the etiology of congenital choledochal cyst. Since then, many authors have reported this condition frequently associated with congenital choledochal cyst. The reflux of pancreatic juice into the common bile duct due to this anomaly has been thought to be responsible for the formation of choledochal cyst. Our previous study using the animal model with anomalous arrangement of pancreaticobiliary ducts, has proven that pancreatic juice in the common bile duct caused cystic dilatation of the common bile duct. However, the mode of action of pancreatic juice on the biliary duct has remained unclear. The present study using peroxidase as a tracer for permeability of the biliary duct showed early damage of the intercellular junction of biliary epithelium exposed by pancreatic juice, followed by affection of submucosal tissue.

Animals↗
PubMed1976

Acrodermatitis enteropathica-like eruption association with parenteral nutrition.

This is a case report of a patient with acrodermatitis enteropathica-like eruption that occurred during parenteral nutrition. The skin lesions were similar to those of acrodermatitis enteropathica, but there were no other major symptoms such as diarrhea and alopecia. It was noticed that the lack of linoleic acid in the diet might be the cause of lesions.

Acrodermatitis↗