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Effect of rejection on electrophysiologic function of canine intestinal grafts: Correlation with histopathology and na-k-ATPase activity

Takeyoshi, I and Zhang, S and Kokudo, Y and Nakamura, K and Ikoma, A and Zhu, Y and Starzl, TE and Todo, S (1995) Effect of rejection on electrophysiologic function of canine intestinal grafts: Correlation with histopathology and na-k-ATPase activity. Journal of Investigative Surgery, 8 (4). 223 - 234. ISSN 0894-1939

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Abstract

To investigate whether electrophysiologic changes can detect the early onset and progress of intestinal rejection, changes in in vitro electrophysiologic function, intestinal histopathology, and Na-K-ATPase activity were studied in dogs. Adult mongrel dogs of both sexes, weighing 18-24 kg, were used for auto and allo small bowel transplantation. The entire small bowels, except for short segments at the proximal and distal ends, were snitched between a pair of dogs (allograft). Animals receiving intestinal autotransplantation were used as controls. AIIograji recipients were sacrificed 3, 4, 5, 7, or 9 days after transplantation, and autograft recipients were sacrificed 3, 7, or 14 days afier transplantation. Immunosuppression was not used. Electrophysiologic measurements were done with an Ussing chamber. Histological analysis was performed blindly using whole thickness sections. Na-K-ATPase activity in the mucosal tissue, which is said to regulate the potential difference, was also measured. Potential difference, resistance, and Na-K-ATPase activity of the allografi intestine decreased with time and were significantly lower 7 and 9 days after transplantation compared to host intestine, normul intestine, and graft intestine of controls (autograft). Potential difference, resistance, and Na-K-ATPase activity of the native intestinal tissue and the autografts did not decrease with time. Detection of histologically mild rejection of the intestine, which is important for appropriate immunosup-pressive treatment in clinical cases, could not be achieved based on electrophysiology or Na-K-ATPase activity. Deterioration of electrophysiologic function during rejection correlated with the histological rejection process and Na-K-ATPase activity; however, electrophysiology my not be a reliable tool for monitoring grafrs, since it cannot detect early intestinal rejection. © 1995 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.

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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Takeyoshi, I
Zhang, S
Kokudo, Y
Nakamura, K
Ikoma, A
Zhu, Y
Starzl, TEtes11@pitt.eduTES11
Todo, S
Centers: Other Centers, Institutes, Offices, or Units > Thomas E. Starzl Transplantation Institute
Date: 1 January 1995
Date Type: Publication
Journal or Publication Title: Journal of Investigative Surgery
Volume: 8
Number: 4
Page Range: 223 - 234
DOI or Unique Handle: 10.3109/08941939509031596
Institution: University of Pittsburgh
Refereed: Yes
ISSN: 0894-1939
Other ID: uls-drl:31735062126846, Starzl CV No. 1789
Date Deposited: 08 Apr 2010 17:30
Last Modified: 04 Feb 2019 22:55
URI: http://d-scholarship.pitt.edu/id/eprint/5175

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