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Preferential distribution of streptomycin in pig kidney cortex
P J Brush1, J P Wood, I C Shaw
1Biochemistry Department, Central Veterinary Laboratory, Weybridge, Surrey, UK.
The Analyst
|October 1, 1990
Summary
Streptomycin concentrates in pig kidney cortex tissue. Using only the cortex could improve regulatory meat monitoring accuracy.
Area of Science:
- Veterinary Pharmacology
- Food Safety Science
- Animal Toxinology
Background:
- Streptomycin is an antibiotic used in food-producing animals.
- Accurate detection of antibiotic residues in meat is crucial for public health and regulatory compliance.
- Kidney tissue is often used for monitoring antibiotic residues due to its excretory function.
Purpose of the Study:
- To determine the distribution of streptomycin within pig kidneys.
- To evaluate the suitability of different kidney tissues for regulatory monitoring.
Main Methods:
- Analysis of streptomycin concentration in cortex and medulla of 14 pig kidneys.
- Calculation of the distribution ratio between kidney cortex and medulla.
Main Results:
- An average streptomycin distribution ratio of 2.5:1 (cortex:medulla) was observed.
- Streptomycin was found to be significantly more concentrated in the kidney cortex.
Conclusions:
- The cortex of pig kidneys shows higher streptomycin accumulation compared to the medulla.
- Utilizing only kidney cortex tissue could enhance the sensitivity and efficiency of regulatory meat monitoring for streptomycin residues.