Summary
Exercise produces changes of drug levels in plasma and increases the concentration of free fatty acids (FFAs), which may interfere with drug-protein binding. FFAs seem to play an antagonistic role to drugs since they have a strong binding capacity to serum albumin. The aim of this study was to evaluate the influence of the consecutive exercise-induced stress in ampicillin levels. Two groups of Wistar rats were used. Group A consisted of six subgroups that were subjected to cold swimming (4°C) for 5, 10, 15, 20, 25, 30 days respectively. Group B was the control group. The animals were injected im. with ampicillin (1 g/Kg/8h in 5 doses). Results showed that exercise enhanced stress parameters (FFAs, adrenal weight, Ht%) and led to an ampicillin increase in all experimental groups comparatively to controls.
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Tesseromatis, C., Trichilis, A., Tsivos, E. et al. Does stress influence ampicillin concentration in serum and tissues?. Eur. J. Drug Metab. Pharmacokinet. 26, 167–171 (2001). https://doi.org/10.1007/BF03190392
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DOI: https://doi.org/10.1007/BF03190392