Effect of glucose on eliminating activity and adhesion of Staphylococcus epidermidis in Tupaia belangeri**☆
10.3969/j.issn.1673-8225.2011.51.017
- VernacularTitle:血糖对树鼩感染表皮葡萄球菌清除能力及植入性材料细菌黏附性的影响
- Author:
Yushan XU
;
Xi WANG
;
Yunmin XU
;
Yujie LEI
;
Meng HE
;
Yunchao HUANG
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2011;15(51):9570-9574
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: High-concentration glucose can induce the formation of biofilms in Staphylococcus epidermidis.OBJECTIVE: To investigate the effect of high-concentration glucose on eliminating ability and adhesion of Staphylococcus epidermidis in Tupaia belangeri.METHODS: Tupaia belangeri models of hyperglycaemia (≥11.1 mmoL/L) were induced by intraperitoneal injection of Streptozocin. PVC catheters were inserted into the left femoral vein, and Staphylococcus epidermidis with or without formation of biofilms was inoculated into the catheters.RESULTS AND CONCLUSION: Following transfection of Staphylococcus epidermidis with formation of biofilms, there were higher rates of bacterial infection as well as higher bacterium colony number in the serum, heart, liver, kidney and pancreas of Tupai belangeri in hyperglycemia group (≥11.1 mmoL/L) as compared with the control group (P < 0.05). Detected by scanning electronic microscope, biofilm formation was remarkable in hyperglycemia group (≥11.1 mmoL/L) (P < 0.05). However, there was no formation of biofilms in hyperglycemia or control groups following transfection of Staphylococcus epidermidis without formation of biofilms. Hyperglycemia can induce the decreasing ability of eliminating bacteria and the increasing formation of biofilms on the surface of biomaterials transfected with Staphylococcus epidermidis.
