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[Gentamycin binding with blood proteins]
Veterinarno-Meditsinski Nauki
|January 1, 1977
Summary
Gentamicin retains its antibacterial activity for one year when stored in protein solutions derived from bovine and swine sera at 4°C. Freeze-drying allows for room temperature storage, preserving the antibiotic
Area of Science:
- Microbiology
- Pharmacology
- Biochemistry
Background:
- Gentamicin is a widely used antibiotic.
- Understanding its stability and protein binding in biological matrices is crucial for therapeutic applications.
- Serum protein binding can influence antibiotic efficacy and pharmacokinetics.
Purpose of the Study:
- To evaluate the stability and activity of gentamicin in bovine and swine sera over time.
- To investigate the binding characteristics of gentamicin with serum proteins.
- To assess the impact of protein binding on gentamicin's bacteriostatic activity.
Main Methods:
- In vitro microbiologic assays to determine antibiotic activity.
- Balanced dialysis to study protein binding.
- Continuous storage under refrigeration (4°C) and freeze-drying techniques.
Main Results:
- Gentamicin in protein solutions retained activity for one year at 4°C.
- Freeze-dried solutions were stable at room temperature.
- Gentamicin bound to swine serum proteins, notably native serum (30%) and globulins (15-16.2%).
- Protein-bound gentamicin was reversible and did not alter minimal bacteriostatic concentration against Bacillus mycoides.
Conclusions:
- Gentamicin exhibits good long-term stability in serum protein solutions.
- Freeze-drying enhances gentamicin's storage potential.
- Gentamicin's reversible binding to serum proteins does not compromise its in vitro efficacy.