Elimination of 1,3,7-trimethylxanthine in laboratory animals during the induction of fatty hepatosis

Liver pathologies play a significant role in changing the metabolism and clearance of a  number  of  pharmacologically  active  substances,  including  1,3,7-trimethylxanthine, which is explained by their influence on enzyme systems that regulate the biotransformation of exogenous biologically active substances. Currently, changes in caffeine clearance  are  being  actively  studied  in  various hepatobiliary disorders, especially those that are chronic, since it is precisely such pathologies, according to a number of researchers, that are characterized by the most predictable  and  stable  change  in  the  trimethylxanthine  pharmacokinetic  profile.  The  purpose of  the  study  was  to  determine  changes  in serum  caffeine  levels  when  inducing  fatty liver  disease  in  laboratory  animals  (rats). The studies were carried out in the vivarium of  the  Department  of  Pharmacology  and Toxicology  of  the  Federal  State  Budgetary Educational Institution of Higher Education of St. Petersburg State University of Medicine.  Laboratory  animals  from  a  previous series of experiments were selected for the study  in  order  to  further  compare  the “caffeine curves.” Fatty hepatosis was modeled using strontium sulfate according to the methodology  developed  at  the  Department of  Pharmacology  and  Toxicology.  Upon completion of induction, fatty hepatosis was confirmed based on clinical and biochemical signs.  Based  on  the  studies  conducted,  we can conclude that there are certain correlations.  For  example,  in  fatty  hepatosis,  the elimination  of  caffeine  is  not  significantly slowed down with a characteristic long plateau (up to 8 hours after administration), turning into a smooth decrease in concentration. Experimental  data  can  be  used  to  create  a database to assess the relationship between pharmacokinetics and the physiological state of animals. Similar experiments need to be carried out on other animal species, which will create a holistic picture and help in assessing  pathologies  for  veterinary  specialists.