豚の胃潰瘍に関する研究(第2報) : 豚胃壁の血管分布

体重約90kgの豚4頭を用い, 胃壁に分布する血管系を観察し, 胃潰瘍発生との関係を検討した.腹腔動脈から硫酸バリウムまたはゼラチン加墨汁を注入したのち,胃全体を10%ホルマリン液で固定,胃壁の検索部位を切出し,硫酸バリウム注入材料についてはSoftexにより, また墨汁注入材料は組織切片を作製して観察した. 得られた結果は次のとおりである.
1) 前胃部には左胃動脈,胃憩室動脈および右胃動脈の枝が分布する. これらの動脈は部厚い筋層を蛇行しながら走り,粘膜では粘膜下動脈網と粘膜動脈網を形成する. 前胃部では,粘膜動脈網がそのまま粘膜上皮下毛細管網となるが,その管径はすこぶる太い.
2) 噴門的には胃憩室動脈,短胃動脈,左胃動脈および右胃動脈の枝が分布し, 胃底には左胃動脈,右胃動脈,左胃大網動脈および右胃大網動脈の枝が分布, 幽門部には左胃動脈,右胃動脈,胃十二指腸動脈の胃枝および右胃大網動脈の枝が分布する. これらの血管は薄い筋層をほぼ直線状に貫いて粘膜へ向い,粘膜下動脈網と粘膜動脈網を形成する. 腺胃部の粘膜上皮下毛細管は粘膜動脈網から起こり,胃腺で密網を形成したのち粘膜上皮下に連するが,噴門部, 胃底および幽門部を比較して,その基本的構造には差異を認めない.
3) 胃壁に分布する血管所見から,豚の胃潰瘍は粘膜上皮下毛細管と胃液との関係,すなわち,胃内腔側からの原因によって発症する可能性の強いことが考えられる.

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内容記述タイプ

Abstract

内容記述

The relationship between the blood vessels distributed in the gastric wall and the occurrence of gastric ulcer was studied in four pigs weighing about 90 kg each. The distribution of blood vessels was observed mainly in the following manner. Barium sulfate or gelatinated Indian ink was injected into the celiac artery. After that the whole stomach was fixed in 10 per cent formalin solution. It was cut into sections of appropriate size. Specimens injected with barium sulfate were examined by a softex. Specimens injected with gelatinated Indian ink were cut into histological sections for microscopical observation. The results obtained are summarized as follows.
1) The branches of the left and right gastric arteries and the diverticular branch of the splenic artery were distributed in the esophageal region of the stomach. They took winding courses in the thick muscle layer to reach the mucosa, where they formed a submucosal and mucosal arterial network. The mucosal arterial network itself turned to be a subepithelial capillary mesh in the esophageal region of the stomach. It was characteristic of this mesh to be composed of capillaries of very large caliber.
2) The branches of the short, left, and right gastric arteries and the branches of the splenic artery were distributed in the cardiac region of the stomach. The left and right gastric and the left and right gastroepiploic arteries were distributed in the fundus of the stomach. The left and right gastric arteries, the gastric branch of the gastroduodenal artery and a branch of the right gastroepiploic artery were distributed in the pyloric region of the stomach. All the blood vessels took nearly straight courses to penetrate the thin muscle layer toward the mucosa. Finally, they formed a submucosal and a mucosal arterial network. The subepithelial capillaries of the glandular region of the stomach were originated from the mucosal arterial network, formed a dense mesh around the gastric gland, and were distributed under the mucosal epithelium. There were no defferences in basic structure among the cardiac, fundic, and pyloric regions of the stomach.
3) Discussion was made on the basis of the results of observation on the blood vessels distributed in the gastric wall. It revealed a high possibility that swine gastric ulcer might be induced by the relationship between subepithelial capillaries and gastric juice; that is, by a cause derived from inside of the lumen of the stomach.

言語

書誌情報

ja : 宮崎大学農学部研究報告
en : Bulletin of the Faculty of Agriculture, Miyazaki University

巻 22, 号 1, p. 201-209, 発行日 1975-10

出版者

宮崎大学農学部

言語

出版者

Miyazaki University

言語

ISSN

収録物識別子タイプ

ISSN

収録物識別子

05446066

書誌レコードID

収録物識別子タイプ

NCID

収録物識別子

AN00236503

著者版フラグ

出版タイプ

VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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