Effect of hypercholesterolemia on experimental colonic anastomotic wound healing in rats.
OBJECTIVE
To evaluate the mechanical and biochemical parameters of colonic anastomotic healing in hypercholesterolemic rats.


METHODS
Sixty rats were divided into two groups of 30 each according to their dietary regimens. The test group was fed with a high cholesterol-containing diet for two months while the control group had standard diet. These two groups were further divided into three subgroups consisting of ten rats each. After hypercholesterolemia was established, left colon resection and anastomosis were performed in both groups and samples from liver and abdominal aorta were taken to evaluate the systemic effects of hypercholesterolemia. Anastomotic wound healing, blow-out pressures and tissue hydroxyproline levels were evaluated.


RESULTS
The test group had a significant weight gain in two months. Microscopic examination of the abdominal aorta revealed no atherosclerotic change in none of the groups, but liver tissue specimens showed significant steatosis in the test group. Tissue hydroxyproline levels and anastomotic blow-out pressures were significantly lower in the test group than in the controls.


CONCLUSIONS
Hypercholesterolemia not only increases hydroxyproline levels and blow-out pressures but also worsens anastomotic wound healing.
Department of Surgery, School of Medicine, Fatih University, 06500 Ankara, Turkey. drmeralsen@yahoo.com
Meral
M
Sen
A Ziya
AZ
Anadol
Mehmet
M
Oğuz
D000714:Anastomosis, Surgical; D000818:Animals; D001012:Aorta, Abdominal / Q000737:chemistry / Q000473:pathology; D002784:Cholesterol / Q000097:blood; D002791:Cholesterol, Dietary / Q000008:administration & dosage; D003106:Colon / Q000098:blood supply / Q000503:physiopathology / Q000601:surgery*; D004730:Endothelium, Vascular / Q000503:physiopathology; D005234:Fatty Liver / Q000473:pathology; D005260:Female; D006909:Hydroxyproline / Q000032:analysis; D006937:Hypercholesterolemia / Q000503:physiopathology*; D008099:Liver / Q000737:chemistry / Q000473:pathology; D008297:Male; D051381:Rats; D012039:Regional Blood Flow; D013529:Surgical Wound Dehiscence / Q000473:pathology / Q000503:physiopathology*; D014280:Triglycerides / Q000097:blood; D015430:Weight Gain; D014945:Wound Healing
D002791:Cholesterol, Dietary; D014280:Triglycerides; D002784:Cholesterol; D006909:Hydroxyproline