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Preparation and use of double-labelled enterobactin
C P Bergstrom1, M C Lu, C L Bell
1Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois, Chicago 60612.
Gaoxiong Yi Xue Ke Xue Za Zhi = the Kaohsiung Journal of Medical Sciences
|October 1, 1990
Summary
Researchers developed double-labelled 3H/14C-enterobactin to study its metabolism in mammals. Mouse studies showed significant metabolism and rapid elimination of the iron chelator within 24 hours.
Area of Science:
- Biochemistry
- Pharmacology
- Microbiology
Background:
- Enterobactin is a crucial siderophore for bacterial iron acquisition.
- Understanding the mammalian metabolism of enterobactin is important for potential therapeutic applications.
- Developing tools to track enterobactin in vivo is necessary.
Purpose of the Study:
- To synthesize and characterize double-labelled 3H/14C-enterobactin.
- To evaluate this labelled compound as a tool for studying mammalian metabolism of enterobactin.
- To investigate the metabolic fate and elimination of enterobactin in mice.
Main Methods:
- Isolation of double-labelled 3H/14C-enterobactin from bacterial cultures.
- Determination of the 3H/14C ratio to confirm labelling.
- Intraperitoneal injection of labelled enterobactin into mice.
- Analysis of metabolic products and elimination pathways over 24 hours.
Main Results:
- Adequate microbial yields of double-labelled 3H/14C-enterobactin were obtained.
- The final 3H/14C ratio was determined to be 2.95:1.
- Significant metabolism and rapid elimination of the injected enterobactin were observed in mice within 24 hours.
Conclusions:
- Double-labelled 3H/14C-enterobactin is a viable tool for studying its mammalian metabolism.
- Enterobactin undergoes substantial metabolism and is quickly eliminated from the mouse system.
- Further research can utilize this labelled compound to explore enterobactin's pharmacokinetic and pharmacodynamic properties in mammals.