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Hepatic lysosomal enzymes activity and liver morphology after short-time omeprazole administration
Franciszek Burdan1, Zofia Siezieniewska, Ryszard Maciejewski
1Human Anatomy Department, Medical University of Lublin, Poland.
Abstract:
The aim of the study was to establish the influence of short-time omeprazole administration on liver function and morphology. Omeprazole was administered intraperitoneally, twice daily, for 3 days to male Wistar rats in two doses: 0.571 mg/kg and 5.71 mg/kg. Control animals were treated with physiological saline. Half of the animals were sacrificed 12 hours after the last injection. The remaining rats were raised for another 6 weeks, without any xenobiotics, and sacrificed on the 47th day of the experiment. The activity of free and bound fractions of hepatic acid phosphatase, beta-galactosidase, beta-N-acetyl-glucosaminidase, cathepsin B, D and L, lipase, and sulphatase were determined spectrophotometrically in homogenates of the liver. The liver sections were examined by light microscopy with hematoxylin-eosin, azan, and periodic acid-Schiff stains. Marginally significant (p < 0.1) differences in activity of free sulphatase fraction, and free and bound fractions of beta-galactosidase were found in animals exposed to the higher dose of omeprazole and sacrificed 12 hours after the last injection. Enzymatic profiles were normalised during the next 6 weeks. Histological evaluation revealed small degenerative and adaptive changes in all examined groups. It could be concluded that observed differences of hepatic lysosomal enzyme activities were the result of accompanied chemical-induced peritonitis as previously reported, and not a direct drug-toxic effect.
Insights
Short-term omeprazole administration did not directly harm rat livers. Observed enzyme changes were linked to chemical peritonitis, not the drug itself, with liver function normalizing over time.
Area of Science:
- Hepatology
- Toxicology
- Pharmacology
Background:
- Omeprazole is a widely used proton pump inhibitor.
- Understanding its short-term effects on liver function is crucial.
Purpose of the Study:
- To investigate the impact of short-term omeprazole administration on rat liver function and morphology.
- To differentiate between direct drug toxicity and other factors influencing liver parameters.
Main Methods:
- Male Wistar rats received omeprazole (0.571 mg/kg or 5.71 mg/kg) or saline intraperitoneally for 3 days.
- Liver enzyme activities (acid phosphatase, beta-galactosidase, etc.) were measured spectrophotometrically.
- Liver histology was assessed using H&E, azan, and PAS stains at 12 hours and 47 days post-treatment.
Main Results:
- Marginally significant differences in beta-galactosidase and sulphatase activity were noted at the higher omeprazole dose 12 hours post-injection.
- Enzymatic profiles normalized within 6 weeks.
- Histological examination revealed minor degenerative and adaptive changes across all groups.
Conclusions:
- Observed hepatic lysosomal enzyme alterations were attributed to chemically induced peritonitis, not direct omeprazole toxicity.
- Short-term omeprazole administration demonstrated no significant direct hepatotoxic effects in this model.
- Liver function and morphology largely recovered within 6 weeks post-treatment.