Document Detail


Endothelial damage of the venous graft in CABG. Influence of solutions used for storage and rinsing on endothelial function.
MedLine Citation:
PMID:  8373622     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A significant proportion of early graft occlusions after aortocoronary revascularization using autologous saphenous vein grafts (SVG) are due to mechanical and/or metabolic or biochemical endothelial lesions. The morphological examination of the endothelium, usually carried out using light microscopy or by various types of scanning electron microscopy (SEM), does not give any indication of the functioning of the endothelium (E). Functionally intact E is capable of producing endothelium-derived relaxing factor (EDRF); a practicable in vitro test is the relaxation of pre-contracted vein segments (VS) in response to acetylcholine (ACh) application. To study the effect of the solution used to rinse and store the SVG between removal and implantation on the functional characteristics of the E, we performed in vitro tests on macroscopically intact VS removed from the saphenous vein of 30 male patients who underwent elective CABG surgery. Isolated VS rings were incubated for 60 min in heparinized whole blood (HWB), Bretschneider's cardioplegic solution (HTK), human albumin solution (HAS), or Ringer's solution (RS) and compared with the results obtained immediately after the removal of untreated control samples (C) taken from the same patients. After equilibration in carbogen aerated Krebs-Henseleit solution and precontraction by 3 x 10(-7) M noradrenaline (NE), relaxation induced by 10(-6) M ACh was measured. Only the samples stored in HWB (13.4 +/- 0.4 mN) showed similar maximal contractions with NE to those in the control group (14.4 +/- 0.5 mN), i.e. all those segments which showed both contractions with NE and relaxation with ACh.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
H R Zerkowski; M Knocks; M A Konerding; N Doetsch; G Roth; K Hakim; J C Reidemeister
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery     Volume:  7     ISSN:  1010-7940     ISO Abbreviation:  Eur J Cardiothorac Surg     Publication Date:  1993  
Date Detail:
Created Date:  1993-10-21     Completed Date:  1993-10-21     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8804069     Medline TA:  Eur J Cardiothorac Surg     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  376-82     Citation Subset:  IM    
Affiliation:
Universitätsklinikum Essen, Germany.
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MeSH Terms
Descriptor/Qualifier:
Acetylcholine
Adult
Aged
Albumins
Cardioplegic Solutions*
Coronary Artery Bypass*
Endothelium, Vascular / metabolism,  pathology*,  ultrastructure
Glucose
Heparin
Humans
Isotonic Solutions
Male
Mannitol
Microscopy, Electron, Scanning
Middle Aged
Nitric Oxide / biosynthesis
Norepinephrine
Organ Preservation / methods
Potassium Chloride
Procaine
Saphenous Vein / pathology*,  transplantation*
Tromethamine
Chemical
Reg. No./Substance:
0/Albumins; 0/Bretschneider cardioplegic solution; 0/Cardioplegic Solutions; 0/Isotonic Solutions; 0/Krebs-Henseleit solution; 10102-43-9/Nitric Oxide; 50-99-7/Glucose; 51-41-2/Norepinephrine; 51-84-3/Acetylcholine; 59-46-1/Procaine; 69-65-8/Mannitol; 7447-40-7/Potassium Chloride; 77-86-1/Tromethamine; 8026-10-6/Ringer's solution; 9005-49-6/Heparin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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