Abstract
ABSTRACTOverexpression of nuclear factor (NF-κB) or activation of Smad3 by transforming growth factor β (TGF-β1) induced by oncogenes results in overexpression of fibrotic processes and hence cell death. The objective of this study is to examine whether Silymarin (Sil) alone or in combination with Vitamin E (Vit E) and/or Curcumin (Cur) plays a modulatory role against the overexpression of NF-κB, and TGF-β that induced in response to carbon tetrachloride (CCl4) administration. The present work revealed that CCl4 induced elevation of in serum alanine aminotransferase (ALT), Apoptosis regulator (Bax), Smad3, TGF-β, and NF-kB hepatic mRNA expression (using Real-time PCR), administration of Sil alone downregulated these expressions. Treatment with Vit E acid and/ or Cur along with Sil produced best results in this concern. B-cell lymphoma 2 (Bcl-2) expressions were downregulated by CCl4; whereas concurrent treatment of Vit E and/or Cur along with Sil increased its expression. On conclusion, the use of Vit E and/or Cur could potentiate the antiapoptotic action of Sil.
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