期刊
MICROBIOLOGY AND IMMUNOLOGY
卷 54, 期 12, 页码 717-725出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1348-0421.2010.00269.x
关键词
cytokines; endotoxin; lipopolysaccharide; rhizobium
资金
- Polish Ministry of Science and Higher Education [303 109 32/3593]
The endotoxic activities of lipopolysaccharides (LPS) isolated from different strains of rhizobia and rhizobacteria (Bradyrhizobium, Mesorhizobium, and Azospirillum) were compared to those of Salmonella enterica sv. Typhimurium LPS. The biological activity of all the examined preparations, measured as Limulus lysate gelation, production of tumor necrosis factor (TNF), interleukin-1 beta (IL-1 beta), and interleukin-6 (IL-6), and nitrogen oxide (NO) induction in human myelomonocytic cells (line THP-1), was considerably lower than that of the reference enterobacterial endotoxin. Among the rhizobial lipopolysaccharides, the activities of Mesorhizobium huakuii and Azospirillum lipoferum LPSs were higher than those of the LPS preparations from five strains of Bradyrhizobium. The weak endotoxic activity of the examined preparations was correlated with differences in lipid A structure compared to Salmonella.
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