结缔组织
伤口愈合
CTGF公司
蛆虫
碱性成纤维细胞生长因子
分泌物
医学
金黄色葡萄球菌
糖尿病
坏死
内科学
生长因子
病理
生物
外科
内分泌学
受体
细菌
植物
遗传学
作者
Shouyu Wang,Decheng Lv,Yuanyuan Wang,Jiangning Wang
出处
期刊:PubMed
日期:2008-04-01
卷期号:22 (4): 472-5
被引量:3
摘要
To study the influence of maggot secretion on expression of bFGF and connective tissue growth factor (CTGF) in ulcer tissue of diabetes mellitus (DM) rats and its antibacterial function.There were 40 3-month-old SD male rats (weighing 300-350 g) which were randomly divided into 2 groups: control group and experimental maggot secretion group. The model of ulcer wound of DM rats was made. The ulcer wound of DM rats in maggot secretion group spread maggot secretions, but no secretion on ulcer wound was found in control group. The morphological and tissue changes of ulcer wound were observed at different times, and the conditions of bacterial infection on ulcer wound in the two groups were checked. Tissue slices were prepared on 7, 14 and 21 days, respectively; immunohistological detection of bFGF and CTFG in ulcer wound of the two groups was done; and the cell number of positive expression of bFGF and CTFG was counted.It was found that the healing of ulcer was dominant in experimental group; the wound was clean; the tissue regenerated and no Staphylococcus aureus infection was seen. Bad healing was obtained in control group; tissue necrosis was found and the rate of Staphylococcus aureus infection was 60%. Positive expression cell number of bFGF in ulcer wound was detected on 7 and 14 days after operation with 23.76 +/- 3.34 and 52.76 +/- 4.84 in experimental group, and 18.88 +/- 2.16 and 46.04 +/- 4.00 in control group. Positive expression cell number of CTGF in ulcer wound was detected on 7 and 14 days after operation with 18.76 +/- 3.24 and 46.52 +/- 4.07 in experimental group, and 12.52 +/- 3.03 and 40.52 +/- 3.96 in control group. There was significant difference between positive expressions of bFGF and CTFG in the two groups (P < 0.05).The maggot secretion can elevate the expressions of bFGF and CTFG in ulcers, promote healing and prevent bacterial infection.
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