Correlation between central venous catheter-related staphylococcus epidermidis icaA, icaD, transforming growth factor beta 1 and biofilms in lung cancer patients
10.3969/j.issn.1673-8225.2012.12.016
- VernacularTitle:肺癌患者中心静脉导管相关表皮葡萄球菌icaA、icaD表达及转化生长因子β1与生物膜的关系
- Author:
Yujie LEI
;
Yunchao HUANG
;
Li YANG
;
Fengli GUO
;
Yushan XU
;
Lianhua YE
;
Xiaobo CHEN
;
Guangqiang ZHAO
;
Meng HE
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2012;16(12):2158-2162
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: It is confirmed that pathogenicity of biomaterials-centered infection is positive correlated to bacterial biofilm formation of Staphylococcus epidermidis on the surface of catheter-related materials. OBJECTIVE: To analyze the relations between expressions of central venous catheter-related Staphylococcus epidermidis icaA, icaD, transforming growth factor β1 (TGF-β1) and formation of bacterial biofilm. METHODS: The type of Staphylococcus epidermidis in lung cancer cases with catheter-related bloodstream infections (CRBSI) was indentified, followed by bacterial genomic DNA extraction. The expression of biofilm formation-related genes icaA, icaD mRNA and phenotype of biofilm were detected by PCR. The serum TGF-β1 levels in cases with or without CRBSI were measured by enzyme-linked immunosorbent assay.RESULTS AND CONCLUSION: The expression of Staphylococcus epidermidis operon icaA and icaD gene was positive correlated to biofilm formation in lung cancer cases with CRBSI (P < 0.01); particularly, the TGF-β1 levels in CRBSI cases were greater than that of non-CRBSI cases (P < 0.05). The results demonstrated that, central venous catheter infection causes positive Staphylococcus epidermidis icaA and icaD gene expressions in lung cancer cases and is prone to form biofilm, high level of peripheral TGF-β1 may play a positive role in bacterial biofilm formation.
