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Published on: January 18, 2014
Glutamate dehydrogenase is highly conserved among Clostridium difficile ribotypes
R J Carman1, K N Wickham, L Chen
1TechLab, Inc., Blacksburg, Virginia, USA. rjcarman@techlab.com
Journal of Clinical Microbiology
|February 4, 2012
Summary
Glutamate dehydrogenase (GDH) is highly conserved across all Clostridium difficile ribotypes. Assays detecting GDH are reactive for all tested ribotypes, indicating GDH
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Clostridium difficile is a significant cause of infectious diarrhea.
- Accurate diagnostics are crucial for timely treatment and infection control.
- Glutamate dehydrogenase (GDH) is a potential biomarker for C. difficile.
Purpose of the Study:
- To investigate the conservation and expression of glutamate dehydrogenase (gluD) in Clostridium difficile.
- To assess the utility of GDH detection assays across diverse C. difficile ribotypes.
Main Methods:
- Analysis of the gluD gene across 77 Clostridium difficile ribotypes.
- In vitro expression of glutamate dehydrogenase (GDH).
- Immunoassay development for GDH detection.
Main Results:
- The gluD gene is highly conserved among all 77 Clostridium difficile ribotypes studied.
- Glutamate dehydrogenase (GDH) was readily expressed in vitro by all ribotypes.
- All tested ribotypes, including ARL 002, ARL 027, and ARL 106, were reactive in GDH detection assays.
Conclusions:
- Glutamate dehydrogenase (GDH) is a conserved and reliably expressed enzyme in Clostridium difficile.
- GDH detection assays are broadly applicable across various C. difficile ribotypes, supporting their use in diagnostics.
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