OBJECTIVE: Analysis of histopatological alterations, and pressure resistence in duodenal anastomosis treated with basic fibroblast growth factor (FGF-b). METHODS: Twenty Wistar rats were submited to a transversal duodenal section and subsequent anastomosis. They were randomly separated into four groups of five rats each: A1 and A2 (experimentals), in which FCFb was applied over the anastomosis; in B1 and B2 (controls), saline was use at the anastomosis site. The rodents were killed with an anesthetics overdosis, according to the following protocol: A1, B1 on 5th postoperative day and A2, B2 on the 7th one. A pressure resistence test of the anastomosis was done. The digitalized system Image ProPlus was used in order to analyse the mean density of the histopatological elements of healing duodenal tissues. RESULTS: All the rats survived without complications. In the group A1 the intraluminal pressure was 52± 14,4 mmHg and in group A2 it was 140± 34,8 mmHg. In the group B1 the pressure reached 33,6± 15,2 mmHg and in B2 it reached 105± 30,3. In group A1 the mean density of histopatological elements was 93± 9,3 and in A2 it was 181,8± 27,6. In the control groups B1 and B2 the mean densitys were 67,6± 16,7 and 101± 12,9 respectively. The statistical analysis detected a significant difference between the data of the experimental and control groups (p<0,05). CONCLUSION: the topical use of FGFb was able to enhance the resistence of duodenal anastomosis in rats observed and evaluated after five and seven postoperative days. The FCFb enhanced the neovascularization and the mean density of collagen, fibroblasts and inflammatory cells in the healing tissues.
Fibroblast growth factor; Healing; Anastomosis; Duodenum; Resistence; Collagen
