Solved in vivo/in vitro discrepancy in methapyrilene induced gene alterations in rat liver and in collagen sandwich cultured primary rat hepatocytes
✍ Scribed by Markus Schug; Tanja Heise; Georgia Günther; Dorothe Storm; Axel Oberemm; Jan G. Hengstler
- Book ID
- 119381101
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 70 KB
- Volume
- 189
- Category
- Article
- ISSN
- 0378-4274
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Continued exposure of rats to carcinogenic doses of methapyrilene (MP) leads to elevated levels of 5-methyl-deoxycytidine (5MC) in liver DNA. Since gene expression often correlates with DNA methylation, we investigated these parameters in the MP-induced hepatocellular carcinomas of Fischer 344 rats.
P-glycoprotein (Pgp) is a small family of plasma membrane proteins, which are capable of transporting substrates across cell membranes. Class I and II Pgp are able to transport drugs and have been shown to mediate multidrug resistance (MDR). Class III Pgp is a long chain phospholipid transporter and