title: Comparative evaluation of the effects of tetracycline, rolitetracycline and doxycycline on some blood parameters related to liver function.
abstract: A comparative study was made on the effects of tetracycline (TC), rolitetracycline (RTC), and doxycycline (DC) at doses of 10-100 micrograms/g i.v. on serum GOT, GPT, bilirubin and urea levels of male and female mice. All tetracyclines at doses of 50-100 micrograms/g caused an increase of serum GOT and GPT activities in females after 2-8 h. This effect was less pronounced in males. The serum urea levels were markedly raised by TC and DC (50-100 micrograms/g) and RTC (10-100 micrograms/g). This effect was produced only in females. It was long-lasting (up to 8 h) after TC and RTC and more transient after DC. Likewise the tetracyclines affected the serum bilirubin only in females but not in males. All tetracyclines (25-100 micrograms/g) increased the amount of unconjugated and total bilirubin. This effect was most pronounced after TC, which also reduced the level of conjugated bilirubin.
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood; D001663:Bilirubin / Q000097:blood; D004318:Doxycycline / Q000494:pharmacology*; D005260:Female; D008099:Liver / Q000187:drug effects*; D008111:Liver Function Tests; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D012382:Rolitetracycline / Q000494:pharmacology*; D012737:Sex Factors; D013752:Tetracycline / Q000494:pharmacology*; D014508:Urea / Q000097:blood
chemical_list: D014508:Urea; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D013752:Tetracycline; D012382:Rolitetracycline; D004318:Doxycycline; D001663:Bilirubin