Protein Information

Name PPAR alpha
Synonyms NR1C1; PPAR; PPAR alpha; PPARA; PPARalpha; Peroxisome proliferator activated receptor; Peroxisome proliferator activated receptor alpha; hPPAR…

Compound Information

Name carbon tetrachloride
CAS tetrachloromethane

Reference List

PubMed Abstract RScore(About this table)
18006644 Fu Y, Zheng S, Lin J, Ryerse J, Chen A: Curcumin protects the rat liver from CCl4-caused injury and fibrogenesis by attenuating oxidative stress and suppressing inflammation. Mol Pharmacol. 2008 Feb;73(2):399-409. Epub 2007 Nov 15.

We previously demonstrated that curcumin, a polyphenolic antioxidant purified from turmeric, up-regulated peroxisome proliferator-activated receptor (PPAR)-gamma gene expression and stimulated its signaling, leading to the inhibition of activation of hepatic stellate cells (HSC) in vitro.
The current study evaluates the in vivo role of curcumin in protecting the liver against injury and fibrogenesis caused by carbon tetrachloride (CCl (4)) in rats and further explores the underlying mechanisms.
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19224547 Fujimura H, Murakami N, Kurabe M, Toriumi W: In vitro assay for drug-induced hepatosteatosis using rat primary hepatocytes, a fluorescent lipid analog and gene expression analysis. J Appl Toxicol. 2009 May;29(4):356-63.

Rat primary hepatocytes were exposed to positive reference compounds [cyclosporine A (CsA), clofibrate (CFR), tetracycline (TC), valproic acid (VPA), carbon tetrachloride (CCl4), tamoxifen (TMX)] in the presence of BODIPY558/568 C12.
Gene expression analysis of the hepatocytes showed two patterns: genes related to lipid metabolism/synthesis were down-regulated by oxidative stress inducing compounds: CsA, TC and TMX, and up-regulated by peroxisome proliferator-activated receptor-alpha agonists: CFR and VPA.
1(0,0,0,1) Details
15980055 Fiorucci S, Rizzo G, Antonelli E, Renga B, Mencarelli A, Riccardi L, Morelli A, Pruzanski M, Pellicciari R: Cross-talk between farnesoid-X-receptor (FXR) and peroxisome proliferator-activated receptor gamma contributes to the antifibrotic activity of FXR ligands in rodent models of liver cirrhosis. J Pharmacol Exp Ther. 2005 Oct;315(1):58-68. Epub 2005 Jun 24.

The nuclear receptors farnesoid X receptor (FXR) and peroxisome proliferator-activated receptor (PPAR) gamma exert counter-regulatory effects on hepatic stellate cells (HSCs) and protect against liver fibrosis development in rodents.
Here, we investigated whether FXR ligands regulate PPARgamma expression in HSCs and models of liver fibrosis induced in rats by porcine serum and carbon tetrachloride administration and bile duct ligation.
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15876570 Planaguma A, Claria J, Miquel R, Lopez-Parra M, Titos E, Masferrer JL, Arroyo V, Rodes J: The selective cyclooxygenase-2 inhibitor SC-236 reduces liver fibrosis by mechanisms involving non-parenchymal cell apoptosis and PPARgamma activation. FASEB J. 2005 Jul;19(9):1120-2. Epub 2005 May 4.

In this study, we tested the effects of SC-236, a selective cyclooxygenase (COX)-2 inhibitor, in rats with carbon tetrachloride (CCl4)-induced liver fibrosis.
Livers from CCl4-treated rats showed increased COX-2 expression and 15-deoxy-prostaglandin (PG) J2 (15d-PGJ2) formation, as well as decreased peroxisome proliferator-activated receptor (PPAR) gamma expression.
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20233594 Chen P, Kakan X, Zhang J: Altered circadian rhythm of the clock genes in fibrotic livers induced by carbon tetrachloride. FEBS Lett. 2010 Mar 15.

Associatively, the expressions of two important clock-regulated genes peroxisome proliferator-activated receptor alpha and cytochrome P450 oxidoreductase lost circadian rhythm with significantly decreased levels during the light-dark (12/12h) cycle in fibrotic livers.
1(0,0,0,1) Details
15959796 Orfila C, Lepert JC, Alric L, Carrera G, Beraud M, Pipy B: Immunohistochemical distribution of activated nuclear factor kappaB and peroxisome proliferator-activated receptors in carbon tetrachloride-induced chronic liver injury in rats. Histochem Cell Biol. 2005 Jun;123(6):585-93. Epub 2005 Jun 15.
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18622026 Shan W, Palkar PS, Murray IA, McDevitt EI, Kennett MJ, Kang BH, Isom HC, Perdew GH, Gonzalez FJ, Peters JM: Ligand activation of peroxisome proliferator-activated receptor beta/delta (PPARbeta/delta) attenuates carbon tetrachloride hepatotoxicity by downregulating proinflammatory gene expression. Toxicol Sci. 2008 Oct;105(2):418-28. Epub 2008 Jul 12.
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15375163 Anderson SP, Howroyd P, Liu J, Qian X, Bahnemann R, Swanson C, Kwak MK, Kensler TW, Corton JC: The transcriptional response to a peroxisome proliferator-activated receptor alpha agonist includes increased expression of proteome maintenance genes. J Biol Chem. 2004 Dec 10;279(50):52390-8. Epub 2004 Sep 15.

The livers from intact wild-type but not PPARalpha-null mice were more resistant to damage after carbon tetrachloride treatment.
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18038451 Shan W, Nicol CJ, Ito S, Bility MT, Kennett MJ, Ward JM, Gonzalez FJ, Peters JM: Peroxisome proliferator-activated receptor-beta/delta protects against chemically induced liver toxicity in mice. Hepatology. 2008 Jan;47(1):225-35.

Exacerbated carbon tetrachloride (CCl (4)) hepatoxicity was also observed in PPARbeta/delta-null as compared with wild-type mice.
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19056852 Chen P, Li C, Pang W, Zhao Y, Dong W, Wang S, Zhang J: The protective role of Per2 against carbon tetrachloride-induced hepatotoxicity. Am J Pathol. 2009 Jan;174(1):63-70. Epub 2008 Dec 4.

The absence of Per2 expression caused a dramatic elevation of Clock expression and influenced Ucp2 through a mechanism that involved a Clock-controlled PPAR-alpha signal transduction pathway.
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