Genetic Diversity of Leptospira interrogans in China
Author Information
Author(s): He Ping, Sheng Yue-Ying, Shi Yao-Zhou, Jiang Xiu-Gao, Qin Jin-Hong, Zhang Zhi-Ming, Zhao Guo-Ping, Guo Xiao-Kui
Primary Institution: Shanghai Jiao Tong University School of Medicine
Hypothesis
What is the genetic diversity among major endemic strains of Leptospira interrogans in China?
Conclusion
The study found 2,917 common genes among the strains and identified 275 strain-specific genes that may contribute to differences in disease manifestation.
Supporting Evidence
- 275 genes were found absent from at least one strain.
- The common backbone of the L. interrogans genome was estimated to contain about 2,917 CDSs.
- Strain-specific genes include those related to cell surface structures or carbohydrate transport.
- Two genomic islands in strain Lai contain genes absent in other strains.
- Differences in genes involved in O-antigen biosynthesis were identified among different serogroups.
Takeaway
Scientists looked at different types of germs that cause leptospirosis in China and found that while many genes are the same, some are unique to specific germs, which might explain why some make people sicker than others.
Methodology
Comparative genomic hybridization (CGH) analysis was used to compare the gene content of L. interrogans serovar Lai with other strains using a microarray.
Limitations
The small sample size and lack of clinical information for many strains limit the ability to correlate specific genes with disease outcomes.
Digital Object Identifier (DOI)
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