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Endothelium-dependent relaxation after short-term preservation of vascular grafts

Massa, G; Ingemansson, Richard LU ; Sjöberg, Trygve LU and Steen, Stig LU (1994) In Annals of Thoracic Surgery 58(4). p.1117-1122
Abstract
As the integrity of graft endothelium seems to be essential to successful long-term patency in coronary operations, its preservation demands the utmost care. The aim of the present study was to investigate the effects of currently used solutions on endothelium-dependent relaxation after short-term storage of vessels at room temperature or at 4 degrees C. The infrarenal rat aorta was selected for study because its use enabled standardization of the investigation, which was performed in organ baths on 672 vessel segments from 112 Sprague-Dawley rats. Stable vasoconstriction was obtained with the thromboxane analogue U-46619. Acetylcholine was used to elicit endothelium-dependent relaxation. The results obtained for vessels preserved for 2... (More)
As the integrity of graft endothelium seems to be essential to successful long-term patency in coronary operations, its preservation demands the utmost care. The aim of the present study was to investigate the effects of currently used solutions on endothelium-dependent relaxation after short-term storage of vessels at room temperature or at 4 degrees C. The infrarenal rat aorta was selected for study because its use enabled standardization of the investigation, which was performed in organ baths on 672 vessel segments from 112 Sprague-Dawley rats. Stable vasoconstriction was obtained with the thromboxane analogue U-46619. Acetylcholine was used to elicit endothelium-dependent relaxation. The results obtained for vessels preserved for 2 hours were compared with those for autologous vessels studied immediately after harvesting. Vessel contractility was unaffected by the preservation solutions, except in the Ringer's acetate group, where it was reduced by 50% (p < 0.05). Endothelium-independent relaxation, tested with papaverine, was unaffected in all groups. Ringer's lactate, Krebs solution, and Perfadex (a low-potassium-dextran-glucose solution) did not significantly affect endothelium-dependent relaxation either at room temperature or at 4 degrees C, although a tendency to impaired relaxation was seen in these three groups after cold storage. Standard Ringer's solution and fresh heparinized blood each significantly reduced endothelium-dependent relaxation in vessels stored at room temperature (p < 0.05), but not in those stored at 4 degrees C. Endothelium-dependent relaxation was significantly reduced after storage in normal saline solution (p < 0.05) and in Ringer's acetate (p < 0.01), both at room temperature and at 4 degrees C.(ABSTRACT TRUNCATED AT 250 WORDS) (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Annals of Thoracic Surgery
volume
58
issue
4
pages
1117 - 1122
publisher
Elsevier
external identifiers
  • pmid:7944762
  • scopus:0028138601
ISSN
1552-6259
language
English
LU publication?
yes
id
bbd9357d-8f94-465c-a5f6-6454b5c9b8f7 (old id 1108578)
date added to LUP
2008-07-24 13:28:45
date last changed
2017-01-01 04:43:26
@article{bbd9357d-8f94-465c-a5f6-6454b5c9b8f7,
  abstract     = {As the integrity of graft endothelium seems to be essential to successful long-term patency in coronary operations, its preservation demands the utmost care. The aim of the present study was to investigate the effects of currently used solutions on endothelium-dependent relaxation after short-term storage of vessels at room temperature or at 4 degrees C. The infrarenal rat aorta was selected for study because its use enabled standardization of the investigation, which was performed in organ baths on 672 vessel segments from 112 Sprague-Dawley rats. Stable vasoconstriction was obtained with the thromboxane analogue U-46619. Acetylcholine was used to elicit endothelium-dependent relaxation. The results obtained for vessels preserved for 2 hours were compared with those for autologous vessels studied immediately after harvesting. Vessel contractility was unaffected by the preservation solutions, except in the Ringer's acetate group, where it was reduced by 50% (p &lt; 0.05). Endothelium-independent relaxation, tested with papaverine, was unaffected in all groups. Ringer's lactate, Krebs solution, and Perfadex (a low-potassium-dextran-glucose solution) did not significantly affect endothelium-dependent relaxation either at room temperature or at 4 degrees C, although a tendency to impaired relaxation was seen in these three groups after cold storage. Standard Ringer's solution and fresh heparinized blood each significantly reduced endothelium-dependent relaxation in vessels stored at room temperature (p &lt; 0.05), but not in those stored at 4 degrees C. Endothelium-dependent relaxation was significantly reduced after storage in normal saline solution (p &lt; 0.05) and in Ringer's acetate (p &lt; 0.01), both at room temperature and at 4 degrees C.(ABSTRACT TRUNCATED AT 250 WORDS)},
  author       = {Massa, G and Ingemansson, Richard and Sjöberg, Trygve and Steen, Stig},
  issn         = {1552-6259},
  language     = {eng},
  number       = {4},
  pages        = {1117--1122},
  publisher    = {Elsevier},
  series       = {Annals of Thoracic Surgery},
  title        = {Endothelium-dependent relaxation after short-term preservation of vascular grafts},
  volume       = {58},
  year         = {1994},
}