Experimental study of the healing process after microvenous graft to microartery.

スポンサーリンク

概要

• 論文の詳細を見る

• Thirty-nine Wistar female rats, weighing from 250 to 350g, were employed in order to investigate in detail the healing processes of venous grafts interposed in microartery.<BR>A segment of the right femoral artery was excised and replaced with the epigastric vein. The grafts were retrieved over a period of time ranging from 4th, 7th, 14th, 28th, 56th and 168 th day postoperatively. The left femoral artery and epigastric vein served as controls. First, patency rate was checked and then changes of the grafted wall were evaluated by light and scanning electron microscope.<BR>The following results were obtained:<BR>1. Throughout the experimental periods, patency rates were 56. 4%(22/39); that is, 4 th day, 60.0%(3/5), 7 th day, 42.9%(3/7), 14 th day, 80.0%(4/5), 28 th day, 44.4%(4/9), 56 th day, 62.5%(5/8) and 168 th day, 60.0%(3/5) respectively.<BR>2. In grafts of 4 days' duration, grafted veins had hyaline degeneration and swelling so that endothelial sloughings were nearly completed on grafts. In grafts of 7 days' one, migrations of new endothelial cells from femoral artery into grafts could be observed, they were almost covered with endothelial cells on 28 th day and were completed on 56 th day postoperatively. The walls of grafted veins started to be replaced by the 14 th day and resulted in fibrous connective tissues at 28 th day. Subintimal hyperplasia, being rich in cellular and fibrous components, appeared around the suture line at 14 th day and could be observed almost all over the graft at 28 th day so that there were no differences of the internal diameter between grafts and femoral arteries at 56 th day.<BR>3. Scanning electron microscopic findings nearly coincided with the histopathological ones.<BR>In short, it is suggested that there may be no direct relatioships between patency rate and healing process of the venous grafts interposed in microartery.

• 社団法人 日本口腔外科学会の論文

著者

• 渡辺 治

  東北歯科大学口腔病理学教室

• 大野 朝也

  東北歯科大学口腔外科学第2講座

• 足立 深

  東北歯科大学口腔外科学第2講座

• 新飯田 俊平

  東北歯科大学口腔解剖学第2講座

• 宮島 久

  東北歯科大学口腔外科学第2講座

• 高田 和雄

  東北歯科大学口腔外科学教室第2講座

• 高田 和雄

  東北歯科大学口腔外科学第1講座

関連論文

• 27.肺門部肺癌に合併した,上皮内癌の新鮮細胞診について(呼吸器1, 一般演題, 第19回日本臨床細胞学会総会)
• 胸部X線単純写真像で正常と見なした肺門部進行肺癌の一例 : 東北支部 : 第16回日本肺癌学会東北支部会
• 鼻口蓋嚢胞の走査電子顕微鏡的観察
• 舌に発生した脂肪腫の1例 : 光学顕微鏡および電子顕微鏡的観察
• 石灰化歯原性嚢胞の1例 : 光学顕微鏡および電子顕微鏡的観察
• 横顔裂の1例
• 口腔粘膜遊離移植を用いる口腔前庭形成術
• 基底細胞母斑症候群の1例
• 口腔外科領域におけるCH-800(Fentiazac)の臨床評価--多施設二重盲検比較試験
• 類皮嚢胞および類表皮嚢胞の3例
• 舌に発生した神経鞘腫の1例
• 上顎骨に発生した顎骨中心性粘液線維腫の1例
• 口腔外科領域におけるLPS(Lyophilized Porcine Skin)の使用経験
• 舌根部に発生した骨性分離腫(Osseous choristoma)と思われる1例
• Warthin腫瘍(Papillary cystadenoma lymphomatosum)の1例
• タイトル無し
• タイトル無し
• Rise and fall of serum concentration of long acting amoxicillin in continuos administration.
• 疣贅型黄色腫の1例
• Imediate reconstruction of lower lip carcinoma by Fries method: Report of two cases.
• Primary reconstruction of the maxilla after the resection of ossifying fibroma: Report of a case.
• Experimental study of the healing process after microvenous graft to microartery.
• Combined epithelial odontogenic tumor の1例
• 遊離前腕皮弁による頬 口角部再建の経験
• タイトル無し
• タイトル無し

もっと見る 閉じる

スポンサーリンク