Xenobiotics and biochemical parameters of isolated rat hepatocytes

U radu su ispitivane promene nekih biohemijskih parametara jetre pod uticajem induktora (grizeofulvin i fenitoin) i inhibitora (metronidazol, hloramfenikol i fenilbutazon), citohroma P-450, lekova sa purinskom strukturom (aminofilin, ksantinolnikotinat, pentoksifilin, azatioprin, tiogvanin i 6-merkaptopurin) i spojeva iz grupe pesticida (lindan, binapikril, paration). Ispitivani su sledeći parametri: vijabilnost hepatocita, sadržaj glutationa i citohroma P-450, te aktivnost ksantinoksidaze i lipoperoksidaze. Ogledi na Wistar pacovima vršeni su na dva načina. U ogledima in vivo životinje su tokom tri dana dobijale navedene supstance, nakon čega su izolirani hepatociti i određivani biokemijski parametri. U ogledima in vitro vijabilni hepatociti su inkubirani tokom tri časa navedenim supstancama nakon čega su određivani biohemijski parametri. Dobijeni rezultati pokazuju da su vijabilnost hepatocita i osta i posmatrani parametri najjače promenjeni pod uticajem hloramfenikola, azatioprina i parationa, dok ostale supstance ispoljavaju znatno manji efekt.The authors investigated the effects of the inductors (griseofulvin and fenitoin) and the inhibitors of the cytochrome P-450 (metronidazole, chloramphenicol and phenylbutazone), the effects of the drugs with the purine structure (aminophylline, xanthinol-nicotmate, pentoxiphylline, azothioprine, thioguanine, 6-mercaptopurine), and the effects of several pesticides (lmdane, binapicrile, paratbion) on some biochemical parameters of the rat liver. The following parameters were determined: viability of hepatocytes, the content of glutathione and cytochrome P-450, and the activity of xanthinoxidase and hpoperoxidase. The experiments were performed in vivo and in vitro. The results showed that the cell viability as well as the other parameters studied, were most drastically affected by chloramphenicol, azathioprine and parathion, whereas the other substances elicited less intensive changes