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The effects of berberine on hyperhomocysteinemia and hyperlipidemia in rats fed with a long-term high-fat diet.

Chang XX, Yan HM, Xu Q, Xia MF, Bian H, Zhu TF, Gao X - Lipids Health Dis (2012)

Bottom Line: The livers were dissected out and snap-frozen in liquid nitrogen for hepatic TC content and molecular analysis. 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression in the liver were determined by real-time PCR.In parallel, it also decreased body weight and improved serum TC and LDL-c.Berberine also tended to decrease hepatic cholesterol.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.

ABSTRACT

Background: The study was undertaken to examine the effects of berberine (BBR) on serum homocysteine, lipids and the aortic lesion in Sprague-Dawley (SD) rats fed with a long-term high-fat diet (HFD).

Methods: Healthy male SD rats weighing 190-210 g received randomly standard diet or a high-fat diet for 24 weeks. After 8 weeks of feeding, rats fed with HFD were randomized to receive berberine (200 mg · kg-1· day-1) or vehicle by gavage for 16 weeks. After overnight fasting, all rats were sacrificed and total blood samples were also collected for determinant of fasting serum homocysteine (Hcy), total cholesterol (TC) and low density lipoprotein cholesterol (LDL-c) levels. The aorta was stained with hematoxylin and eosin (HE) and Sudan Ш to evaluate aortic lesion. The livers were dissected out and snap-frozen in liquid nitrogen for hepatic TC content and molecular analysis. 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression in the liver were determined by real-time PCR.

Results: Intragastrical administration with berberine for 16 weeks lowered serum Hcy in rats fed with a high-fat diet. In parallel, it also decreased body weight and improved serum TC and LDL-c. Berberine also tended to decrease hepatic cholesterol. Consistently, berberine also upregulated LDL receptor (LDLR) mRNA level and suppressed HMGR gene expression. Meanwhile, upon berberine-treated rats, there was a significant increase in apolipoprotein E (apoE) mRNA, but no change in apoAI and scavenger receptor (SR) mRNA in the liver. Further, no atherosclerotic lesions were developed in berberine-treated rats for 16 weeks.

Conclusion: Berberine can counteract HFD-elicited hyperhomocysteinemia and hyperlipidemia partially via upregulating LDLR and apoE mRNA levels and suppressing HMGR gene expression.

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Related in: MedlinePlus

The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression. Real-time quantitative PCR analysis of LDLR, HMGR and SR (A) and apolipoproteins (B) in the livers of SD rats administrated with berberine or vehicle (n = 8 per group). Relative mRNA amounts of each gene were normalized to that of beta-actin. Values are mean ± SEM. *p < 0.05vs N; #p < 0.05 vs C.
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Figure 4: The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression. Real-time quantitative PCR analysis of LDLR, HMGR and SR (A) and apolipoproteins (B) in the livers of SD rats administrated with berberine or vehicle (n = 8 per group). Relative mRNA amounts of each gene were normalized to that of beta-actin. Values are mean ± SEM. *p < 0.05vs N; #p < 0.05 vs C.

Mentions: The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), lipoprotein receptors and apolipoproteins gene expression in the liver of high-fat diet-fed rats were investigated. The relative mRNA levels of low-density lipoprotein receptor (LDLR) (p < 0.05, Figure 4A) and apoE (p < 0.05, Figure 4B) was significantly down-regulated in the livers of HFD-fed rats relative to the ND control group. BBR treatment significantly reversed the downregulating effects of HFD on the expression of LDLR and apoE (p < 0.05). On the other hand, the level of HMGR mRNA was increased in rats fed with long-term high-fat diet, which was markedly lowered by BBR treatment (p < 0.05, Figure 4A). We also found that apoB and apoAI mRNAs were suppressed by HFD feeding (p < 0.05, Figure 4B), but these were not affected by BBR treatment. Despite these changes, BBR and high-fat-diet feeding did not influence the expression of scavenger receptor (SR).


The effects of berberine on hyperhomocysteinemia and hyperlipidemia in rats fed with a long-term high-fat diet.

Chang XX, Yan HM, Xu Q, Xia MF, Bian H, Zhu TF, Gao X - Lipids Health Dis (2012)

The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression. Real-time quantitative PCR analysis of LDLR, HMGR and SR (A) and apolipoproteins (B) in the livers of SD rats administrated with berberine or vehicle (n = 8 per group). Relative mRNA amounts of each gene were normalized to that of beta-actin. Values are mean ± SEM. *p < 0.05vs N; #p < 0.05 vs C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3475055&req=5

Figure 4: The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression. Real-time quantitative PCR analysis of LDLR, HMGR and SR (A) and apolipoproteins (B) in the livers of SD rats administrated with berberine or vehicle (n = 8 per group). Relative mRNA amounts of each gene were normalized to that of beta-actin. Values are mean ± SEM. *p < 0.05vs N; #p < 0.05 vs C.
Mentions: The effects of berberine on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), lipoprotein receptors and apolipoproteins gene expression in the liver of high-fat diet-fed rats were investigated. The relative mRNA levels of low-density lipoprotein receptor (LDLR) (p < 0.05, Figure 4A) and apoE (p < 0.05, Figure 4B) was significantly down-regulated in the livers of HFD-fed rats relative to the ND control group. BBR treatment significantly reversed the downregulating effects of HFD on the expression of LDLR and apoE (p < 0.05). On the other hand, the level of HMGR mRNA was increased in rats fed with long-term high-fat diet, which was markedly lowered by BBR treatment (p < 0.05, Figure 4A). We also found that apoB and apoAI mRNAs were suppressed by HFD feeding (p < 0.05, Figure 4B), but these were not affected by BBR treatment. Despite these changes, BBR and high-fat-diet feeding did not influence the expression of scavenger receptor (SR).

Bottom Line: The livers were dissected out and snap-frozen in liquid nitrogen for hepatic TC content and molecular analysis. 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression in the liver were determined by real-time PCR.In parallel, it also decreased body weight and improved serum TC and LDL-c.Berberine also tended to decrease hepatic cholesterol.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.

ABSTRACT

Background: The study was undertaken to examine the effects of berberine (BBR) on serum homocysteine, lipids and the aortic lesion in Sprague-Dawley (SD) rats fed with a long-term high-fat diet (HFD).

Methods: Healthy male SD rats weighing 190-210 g received randomly standard diet or a high-fat diet for 24 weeks. After 8 weeks of feeding, rats fed with HFD were randomized to receive berberine (200 mg · kg-1· day-1) or vehicle by gavage for 16 weeks. After overnight fasting, all rats were sacrificed and total blood samples were also collected for determinant of fasting serum homocysteine (Hcy), total cholesterol (TC) and low density lipoprotein cholesterol (LDL-c) levels. The aorta was stained with hematoxylin and eosin (HE) and Sudan Ш to evaluate aortic lesion. The livers were dissected out and snap-frozen in liquid nitrogen for hepatic TC content and molecular analysis. 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR), Lipoprotein receptors and apolipoproteins gene expression in the liver were determined by real-time PCR.

Results: Intragastrical administration with berberine for 16 weeks lowered serum Hcy in rats fed with a high-fat diet. In parallel, it also decreased body weight and improved serum TC and LDL-c. Berberine also tended to decrease hepatic cholesterol. Consistently, berberine also upregulated LDL receptor (LDLR) mRNA level and suppressed HMGR gene expression. Meanwhile, upon berberine-treated rats, there was a significant increase in apolipoprotein E (apoE) mRNA, but no change in apoAI and scavenger receptor (SR) mRNA in the liver. Further, no atherosclerotic lesions were developed in berberine-treated rats for 16 weeks.

Conclusion: Berberine can counteract HFD-elicited hyperhomocysteinemia and hyperlipidemia partially via upregulating LDLR and apoE mRNA levels and suppressing HMGR gene expression.

Show MeSH
Related in: MedlinePlus