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Feldman F, Koudoufio M, Sané AT, Marcil V, Sauvé MF, Butcher J, Patey N, Martel C, Spahis S, Duan H, Figeys D, Desjardins Y, Stintzi A, Levy E. Therapeutic Potential of Cranberry Proanthocyanidins in Addressing the Pathophysiology of Metabolic Syndrome: A Scrutiny of Select Mechanisms of Action. Antioxidants (Basel) 2025; 14:268. [PMID: 40227220 PMCID: PMC11939394 DOI: 10.3390/antiox14030268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2025] [Revised: 02/14/2025] [Accepted: 02/20/2025] [Indexed: 04/15/2025] Open
Abstract
Metabolic syndrome (MetS) constitutes a spectrum of interconnected conditions comprising obesity, dyslipidemia, hypertension, and insulin resistance (IR). While a singular, all-encompassing treatment for MetS remains elusive, an integrative approach involving tailored lifestyle modifications and emerging functional food therapies holds promise in preventing its multifaceted manifestations. Our main objective was to scrutinize the efficacy of cranberry proanthocyanidins (PAC, 200 mg/kg/day for 12 weeks) in mitigating MetS pathophysiology in male mice subjected to standard Chow or high-fat/high-fructose (HFHF) diets while unravelling intricate mechanisms. The administration of PAC, in conjunction with an HFHF diet, significantly averted obesity, evidenced by reductions in body weight, adiposity across various fat depots, and adipocyte hypertrophy. Similarly, PAC prevented HFHF-induced hyperglycemia and hyperinsulinemia while also lessening IR. Furthermore, PAC proved effective in alleviating key risk factors associated with cardiovascular diseases by diminishing plasma saturated fatty acids, as well as levels of triglycerides, cholesterol, and non-HDL-C levels. The rise in adiponectin and drop in circulating levels of inflammatory markers showcased PAC's protective role against inflammation. To better clarify the mechanisms behind PAC actions, gut-liver axis parameters were examined, showing significant enhancements in gut microbiota composition, microbiota-derived metabolites, and marked reductions in intestinal and hepatic inflammation, liver steatosis, and key biomarkers associated with endoplasmic reticulum (ER) stress and lipid metabolism. This study enhances our understanding of the complex mechanisms underlying the development of MetS and provides valuable insights into how PAC may alleviate cardiometabolic dysfunction in HFHF mice.
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Affiliation(s)
- Francis Feldman
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Nutrition, Université de Montréal, Montreal, QC H3T 1A8, Canada
| | - Mireille Koudoufio
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Nutrition, Université de Montréal, Montreal, QC H3T 1A8, Canada
| | - Alain Théophile Sané
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
| | - Valérie Marcil
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Nutrition, Université de Montréal, Montreal, QC H3T 1A8, Canada
| | - Mathilde Foisy Sauvé
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Nutrition, Université de Montréal, Montreal, QC H3T 1A8, Canada
| | - James Butcher
- School of Pharmaceutical Sciences, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 1M5, Canada; (J.B.); (H.D.); (D.F.); (A.S.)
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Natalie Patey
- Department of Pathology and Cell Biology, Université de Montréal, Montreal, QC H3C 3J7, Canada;
| | - Catherine Martel
- Montreal Heart Institute Research Centre, Montreal, QC H1T 1C8, Canada;
- Departement of Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Schohraya Spahis
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Biochemistry & Molecular Medicine, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Haonan Duan
- School of Pharmaceutical Sciences, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 1M5, Canada; (J.B.); (H.D.); (D.F.); (A.S.)
| | - Daniel Figeys
- School of Pharmaceutical Sciences, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 1M5, Canada; (J.B.); (H.D.); (D.F.); (A.S.)
| | - Yves Desjardins
- Institute of Nutrition and Functional Foods, Laval University, Quebec, QC G1V 4L3, Canada;
| | - Alain Stintzi
- School of Pharmaceutical Sciences, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 1M5, Canada; (J.B.); (H.D.); (D.F.); (A.S.)
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Emile Levy
- Azraeli Research Centre, Sainte-Justine University Health Centre, Montreal, QC H3T 1C5, Canada; (F.F.); (M.K.); (A.T.S.); (V.M.); (M.F.S.); (S.S.)
- Department of Nutrition, Université de Montréal, Montreal, QC H3T 1A8, Canada
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Servin-Uribe RI, Castilla-Ramírez P, Ramírez IFP, Jiménez JP, Reynoso-Camacho R. In vivo Differential Effects of Extractable and Non-Extractable Phenolic Compounds from Grape Pomace on the Regulation of Obesity and Associated Metabolic Alterations. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2025; 80:37. [PMID: 39821690 DOI: 10.1007/s11130-024-01278-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2024] [Indexed: 01/19/2025]
Abstract
Grape pomace (GP) is a by-product rich in phytochemicals, including extractable polyphenols (EPPs) and non-extractable polyphenols (NEPPs), which have distinct metabolic fates that may affect their biological activities. The benefits of GP have been reported in relation to obesity and its comorbidities, particularly when administered preventively focusing on EPPs. Therefore, the aim of this study was to investigate the effects of EPPs and NEPPs from GP as a treatment for obesity and its associated metabolic alterations. A previous comprehensive characterization of the selected GP revealed the most relevant individual compounds in the EPPs fraction (malvidin hexoside, (-)-epicatechin, quercetin, and procyanidin dimer B2 isomer II), as well as in the NEPPs fraction (hydroxybenzoic acid isomers I-II). The experiment was performed in obese rats with insulin resistance, treated for 8 weeks with EPPs or NEPPs grape pomace fractions (100 mg/kg). After the intervention, the HFFD + EPP group showed a significantly lower weight gain (9.6%) and body mass index (9.7%) compared to the HFFD group. While liver triglyceride levels were only significantly reduced in the HFFD + NEPP group (47%) compared to the HFFD group. Neither treatment resulted in a reduction of insulin resistance. Therefore, the supplementation with grape pomace phenolic fractions to an animal model of obesity exerted differential beneficial effects on body weight and liver lipid accumulation, overall contributing to an amelioration of some the metabolic alterations present in obesity, although not to aspects such as glycemic homeostasis.
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Affiliation(s)
- Rogelio I Servin-Uribe
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, Qro., 76010, México
| | - Paloma Castilla-Ramírez
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, Qro., 76010, México
| | - Iza F Pérez Ramírez
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, Qro., 76010, México
| | - Jara Pérez Jiménez
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), José Antonio Novais 10, Madrid, 28040, Spain
- CIBER Diabetes and Associated Metabolic Diseases: Diabetes and Associated Metabolic Diseases Networking Biomedical Research Centre, CIBERDEM, Carlos III Health Institute (ISCIII), Madrid, 28029, España
| | - Rosalía Reynoso-Camacho
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, Qro., 76010, México.
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Martínez-Meza Y, Pérez-Jiménez J, Salgado-Rodríguez LM, Castellanos-Jiménez AK, Reynoso-Camacho R. In Vivo Evaluation of the Cardiometabolic Potential of Grape Pomace: Effect of Applying Instant Controlled Pressure Drop. Foods 2022; 11:3537. [PMID: 36360149 PMCID: PMC9655148 DOI: 10.3390/foods11213537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/20/2022] [Accepted: 11/02/2022] [Indexed: 11/10/2023] Open
Abstract
Grape pomace (GP) is a source of polyphenols which may be present as free structures or associated with dietary fiber. Instant controlled pressure drop (DIC) is a technology which can modify the association of polyphenols with food matrixes, but how these modifications affect the health benefits associated with GP remains to be elucidated. In this study, in rats fed a high-fat-fructose diet (HFF), we evaluated the in vivo cardiometabolic effects of the modification of polyphenols in GP caused by DIC at 0.2 MPa for 60 s (DIC1) and 0.4 MPa for 120 s (DIC2). These treatments increased anthocyanin and total flavonoid contents, respectively, while all the supplementations caused significant improvements in insulin resistance and plasma triacylglycerols. Thus, the bioactive compounds present in GP (including a major fraction of non-extractable proanthocyanidins) caused these modifications independently of the specific polyphenol profiles which may have resulted from these DIC treatments. Additionally, only intact GP led to an increase in HDL cholesterol, while only DIC2-treated GP improved hepatic steatosis. In conclusion, GP always improves insulin sensitivity in this animal model of obesity, while the different compositions of GP modified by DIC may be associated with other cardiometabolic parameters.
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Affiliation(s)
| | - Jara Pérez-Jiménez
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), José Antonio Novais 10, 28040 Madrid, Spain
- CIBER of Diabetes and Associated Metabolic Disease (CIBERDEM), ISCIII, 28029 Madrid, Spain
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Ferreira YAM, Jamar G, Estadella D, Pisani LP. Proanthocyanidins in grape seeds and their role in gut microbiota-white adipose tissue axis. Food Chem 2022; 404:134405. [DOI: 10.1016/j.foodchem.2022.134405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 08/25/2022] [Accepted: 09/22/2022] [Indexed: 11/27/2022]
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Munkong N, Thim-Uam A, Pengnet S, Hansakul P, Somparn N, Naowaboot J, Tocharus J, Tocharus C. Effects of Red Rice Bran Extract on High-Fat Diet-Induced Obesity and Insulin Resistance in Mice. Prev Nutr Food Sci 2022; 27:180-187. [PMID: 35919575 PMCID: PMC9309068 DOI: 10.3746/pnf.2022.27.2.180] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/05/2022] [Accepted: 02/23/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Narongsuk Munkong
- Department of Pathology, School of Medicine, University of Phayao, Phayao 56000, Thailand
| | - Arthid Thim-Uam
- Division of Biochemistry, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand
| | - Sirinat Pengnet
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand
| | - Pintusorn Hansakul
- Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Nuntiya Somparn
- Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Jarinyaporn Naowaboot
- Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Jiraporn Tocharus
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chainarong Tocharus
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
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El-Ashmawy NE, Khedr EG, Alfeky NH, Ibrahim AO. Upregulation of GLUT4 and PI3K, and downregulation of GSK3 mediate the anti-hyperglycemic effects of proanthocyanidins. MEDICINE INTERNATIONAL 2022; 2:14. [PMID: 36698506 PMCID: PMC9829200 DOI: 10.3892/mi.2022.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 04/08/2022] [Indexed: 01/28/2023]
Abstract
Diabetes mellitus is the most common chronic metabolic disorder worldwide. The present study was designed to investigate the potential role of cinnamon bark extract oligomeric proanthocyanidins (OPCs) in controlling streptozotocin (STZ)-induced hyperglycemia and to clarify the underlying molecular mechanisms underlying its effects. For this purpose, 60 male rats were equally divided into six groups as follows: The normal control group; OPC control group (non-diabetic rats treated with OPC at 300 mg/kg orally for 21 days); the untreated diabetic control group; the wortmannin control group [diabetic rats treated with wortmannin at 1 mg/kg, intraperitoneal (i.p.) on the final day of the experiment]; the OPC diabetic group (diabetic rats treated with OPC at 300 mg/kg orally for 21 days); and the OPC diabetic + wortmannin co-treated group (diabetic rats treated with OPC at 300 mg/kg/day for 21 consecutive days and then 24 h after the final OPC dose treated with a single wortmannin injection at 1 mg/kg, i.p.). The results indicated that OPC ameliorated the diabetic state, as evidenced by a significant decrease in serum glucose levels, and a significant increase in the levels of insulin, amylin, insulin receptor phosphorylation, glycogen and glucose transporter-4 translocation; it also improved the lipid profile in STZ-diabetic rats. On the whole, the findings of the present study provide biochemical evidence that OPC treatment is effective as an anti-diabetic and anti-hyperlipidemic agent by enhancing glucose uptake through the activation of insulin receptor kinase activity and the PI3K/Akt pathway.
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Affiliation(s)
- Nahla E. El-Ashmawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Gharbia 31111, Egypt
| | - Eman G. Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Gharbia 31111, Egypt
| | - Nehal H. Alfeky
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Gharbia 31111, Egypt
| | - Amera O. Ibrahim
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Gharbia 31111, Egypt,Correspondence to: Dr Amera O. Ibrahim, Department of Biochemistry, Faculty of Pharmacy, Tanta University, El-Geish Street, Tanta, Gharbia 31111, Egypt
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Garcia-Hernandez SC, Porchia LM, Pacheco-Soto BT, López-Bayghen E, Gonzalez-Mejia ME. Metformin does not improve insulin sensitivity over hypocaloric diets in women with polycystic ovary syndrome: a systematic review of 12 studies. Gynecol Endocrinol 2021; 37:968-976. [PMID: 33899646 DOI: 10.1080/09513590.2021.1913114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE To improve insulin action, most clinicians prescribe Metformin in patients with insulin resistance (IR). Women with polycystic ovary syndrome (PCOS), in which IR is an important physiopathological mechanism, treatment with Metformin and specialized diets have been suggested to reduce the patient's IR. However, numerous studies have demonstrated conflicting results with respect to supplementing a diet with Metformin. Therefore, we conducted a meta-analysis to determine if Metformin provides a benefit in conjunction with hypocaloric diets to improve insulin sensitivity in PCOS women. METHODS PubMed, SCOPUS, LILACS, and EBSCO databases and retrieved studies' bibliographies were searched for prospective studies that investigated the effect between Metformin and hypocaloric diets in PCOS women until April 2020. Pre- and post-intervention values for fasting plasma glucose (FPG), fasting plasma insulin (FPI), and IR indices (HOMA1-IR, ISI, and QUICKI) were extracted. Using Comprehensive Meta-Analysis software, the pooled standard difference in the means (SDM) and 95%CIs were calculated. RESULTS 11 publications (12 studies) were selected. There was not a benefit of adding Metformin to a hypocaloric diet with respect to FPG (SDM= -0.17; 95%CI: -0.48-0.14, p = .28) and FPI (SDM = 0.16; 95%CI: -0.24-0.55, p = .45). None of the IR indices also demonstrated any benefit of using Metformin when a diet intervention was implemented (HOMA1-IR: SDM = 0.28; 95%CI: -0.27-0.84, p = .315; ISI: SDM = 0.344; 95%CI: -0.17-0.85, p = .186; QUICKI: SDM= -0.01; 95%CI: -0.42-0.41, p = .968). CONCLUSION Here, we determined that adding Metformin to hypocaloric diets did not improve serum glucose or insulin concentrations as well as IR in PCOS women.
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Affiliation(s)
| | - Leonardo M Porchia
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México City, México
| | - Blanca T Pacheco-Soto
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Esther López-Bayghen
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México City, México
| | - M Elba Gonzalez-Mejia
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Anti-Diabetic and Antioxidant Activities of Red Wine Concentrate Enriched with Polyphenol Compounds under Experimental Diabetes in Rats. Antioxidants (Basel) 2021; 10:antiox10091399. [PMID: 34573031 PMCID: PMC8471289 DOI: 10.3390/antiox10091399] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/27/2022] Open
Abstract
We obtained red wine concentrate, which was enriched with natural polyphenolic compounds (PC concentrate). The main purpose was to study the hypoglycemic and antioxidant effects of the red wine concentrate, and its impact on key hematological parameters of rats with experimental diabetes mellitus. While administrating the red wine concentrate to rats with diabetes, partial recovering of glucose tolerance was promoted, as well as normalization of glycated hemoglobin level, an increase in the quantity of erythrocytes and hemoglobin concentration. PC concentrate had anti-radical effect, which was determined using 2,2-diphenyl-1-picrylhydrazylradical (DPPH) method and effectively inhibited oxidation of phosphatidylcholine liposomes, induced by 2,2′-azobis(2-amidinopropane) dihydrochloride (AAPH) as a free radical generator. It was also confirmed that PC concentrate had antioxidant properties in vivo. The contents of lipid peroxidation and protein oxidation products, the activity of catalase, and glutathione peroxidase (GPx) were increased in the plasma of rats with diabetes mellitus. At the same time, the activity of superoxide dismutase (SOD) was decreased. The concentrate of red wine had a corrective effect on investigated indicators and caused their normalization in plasma of diabetic animals.
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Proanthocyanidins and Where to Find Them: A Meta-Analytic Approach to Investigate Their Chemistry, Biosynthesis, Distribution, and Effect on Human Health. Antioxidants (Basel) 2021; 10:antiox10081229. [PMID: 34439477 PMCID: PMC8389005 DOI: 10.3390/antiox10081229] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Proanthocyanidins (PACs) are a class of polyphenolic compounds that are attracting considerable interest in the nutraceutical field due to their potential health benefits. However, knowledge about the chemistry, biosynthesis, and distribution of PACs is limited. This review summarizes the main chemical characteristics and biosynthetic pathways and the main analytical methods aimed at their identification and quantification in raw plant matrices. Furthermore, meta-analytic approaches were used to identify the main plant sources in which PACs were contained and to investigate their potential effect on human health. In particular, a cluster analysis identified PACs in 35 different plant families and 60 different plant parts normally consumed in the human diet. On the other hand, a literature search, coupled with forest plot analyses, highlighted how PACs can be actively involved in both local and systemic effects. Finally, the potential mechanisms of action through which PACs may impact human health were investigated, focusing on their systemic hypoglycemic and lipid-lowering effects and their local anti-inflammatory actions on the intestinal epithelium. Overall, this review may be considered a complete report in which chemical, biosynthetic, ecological, and pharmacological aspects of PACs are discussed.
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MH-76, a Novel Non-Quinazoline α 1-Adrenoceptor Antagonist, but Not Prazosin Reduces Inflammation and Improves Insulin Signaling in Adipose Tissue of Fructose-Fed Rats. Pharmaceuticals (Basel) 2021; 14:ph14050477. [PMID: 34069933 PMCID: PMC8157569 DOI: 10.3390/ph14050477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/09/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022] Open
Abstract
Background: Quinazoline α1-adrenoceptors antagonists have been shown to exert moderately favorable effects on the metabolic profile in hypertensive patients. However, based on AntiHypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT) results, they are no longer recommended as a first line therapy of hypertension. Recent studies have shown that quinazoline-based α1-adrenoceptors antagonists (prazosin, doxazosin) induce the apoptosis and necrosis, which may be responsible for ALLHAT outcomes; however, these effects were proven to be independent of α1-adrenoceptor blockade and were associated with the presence of quinazoline moiety. MH-76 (1-[3-(2,6-dimethylphenoxy)propyl]-4-(2-methoxyphenyl)piperazine hydrochloride)) is a non-quinazoline α1-adrenoceptor antagonist which, in fructose-fed rats, exerted antihypertensive effect, and, contrary to prazosin, reduced insulin resistance and abdominal adiposity. In this study we aimed to further investigate and compare the effects of MH-76 and prazosin on inflammation in adipose tissue of fructose-fed rats. Methods: Abdominal adipose tissue was collected from four groups of fructose-fed rats (Control, Fructose, Fructose + MH-76 and Fructose + Prazosin) and subjected to biochemical, histopathological and immunohistochemical studies. Moreover, selected tissue distribution studies were performed. Results: Treatment with MH-76 but not with prazosin improved endothelial integrity, reduced adipose tissue inflammation and infiltration by immune cells, resulting in lowering leptin, MCP-1, IL-6, TNF-α and PAI-1 levels. In adipose tissue from Fructose + MH-76 animals, a higher amount of eosinophils accompanied with higher IL-4 concentration was observed. Treatment with MH-76 but not with prazosin markedly reduced phosphorylation of IRS-1 at Ser307. Conclusion: MH-76 may improve insulin signaling in adipose tissue by reducing the pro-inflammatory cytokine production and inhibiting the inflammatory cells recruitment. In contrast, in adipose tissue from animals treated with prazosin, the inflammatory effect was clearly enhanced.
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Ramos‐Romero S, Léniz A, Martínez‐Maqueda D, Amézqueta S, Fernández‐Quintela A, Hereu M, Torres JL, Portillo MP, Pérez‐Jiménez J. Inter‐Individual Variability in Insulin Response after Grape Pomace Supplementation in Subjects at High Cardiometabolic Risk: Role of Microbiota and miRNA. Mol Nutr Food Res 2020; 65:e2000113. [DOI: 10.1002/mnfr.202000113] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 10/30/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Sara Ramos‐Romero
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
- Department of Cell Biology Physiology and Immunology Faculty of Biology University of Barcelona Barcelona 08028 Spain
| | - Asier Léniz
- Basque Health Service (Osakidetza) Araba Integrated Health Care Organization Vitoria 01009 Spain
- Nutrition and Obesity Group, Department of Nutrition and Food Science Faculty of Pharmacy and Lucio Lascaray Research Center University of the Basque Country (UPV/EHU) Vitoria 01006 Spain
| | - Daniel Martínez‐Maqueda
- Department of Metabolism and Nutrition Technology and Nutrition (ICTAN‐CSIC) Institute of Food Science José Antonio Novais 10 Madrid 28040 Spain
| | - Susana Amézqueta
- Departament d'Enginyeria Química i Química Analítica and Institut de Biomedicina (IBUB) Universitat de Barcelona Barcelona 08028 Spain
| | - Alfredo Fernández‐Quintela
- Nutrition and Obesity Group, Department of Nutrition and Food Science Faculty of Pharmacy and Lucio Lascaray Research Center University of the Basque Country (UPV/EHU) Vitoria 01006 Spain
- Instituto de Salud Carlos III (ISCIII) CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN) Madrid 28029 Spain
| | - Mercè Hereu
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
| | - Josep Luís Torres
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
| | - María P. Portillo
- Nutrition and Obesity Group, Department of Nutrition and Food Science Faculty of Pharmacy and Lucio Lascaray Research Center University of the Basque Country (UPV/EHU) Vitoria 01006 Spain
- Instituto de Salud Carlos III (ISCIII) CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN) Madrid 28029 Spain
| | - Jara Pérez‐Jiménez
- Department of Metabolism and Nutrition Technology and Nutrition (ICTAN‐CSIC) Institute of Food Science José Antonio Novais 10 Madrid 28040 Spain
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Mohamad HE, Asker ME, Keshawy MM, Abdel Aal SM, Mahmoud YK. Infliximab ameliorates tumor necrosis factor-alpha exacerbated renal insulin resistance induced in rats by regulating insulin signaling pathway. Eur J Pharmacol 2020; 872:172959. [PMID: 32004528 DOI: 10.1016/j.ejphar.2020.172959] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 12/17/2022]
Abstract
Infliximab (IFX), a monoclonal antibody for tumor necrosis factor-alpha (TNF-α), is known to restore blood glucose homeostasis. However, its effects on improving renal insulin resistance (IR) are not yet studied. So we investigate the impact of infliximab on renal insulin signaling pathway in IR rat model regarding to metformin (MET). The induced IR was confirmed by a high oral glucose tolerance test, an elevation of lipid profile and the homeostatic model assessment of insulin resistance 2 (HOMA-IR 2) values. Subsequently, IR rats were concurrently treated with either MET (100 mg/kg/day) or IFX (one dose 5 mg/kg) besides IR and normal control (NC) groups. Four weeks later, IR control rats displayed hyperglycemia, hyperinsulinemia and elevation in HOMA-IR 2, renal function markers and renal tissue TNF-α, interleukins-1β and 6 (Il-1β, IL-6) and suppressor of cytokines signaling 3 (SOCS3) contents as well as glomerulosclerosis when compared to NC group. Additionally, the phosphorylation of renal insulin receptor substrate 1 (IRS1), phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) were markedly impaired. Treatment with either MET or IFX significantly improved IR and kidney functions. The effects of the drugs were achieved by the downregulation of renal inflammatory cytokines and SOCS3 levels and the amelioration of the renal IRS1/PI3K/Akt pathway. In conclusion, MET and IFX ameliorated the TNF-α worsening effect on IR in rat renal tissues by regulating insulin signaling. Interestingly, infliximab was superior to metformin in regulating insulin signaling pathway. Therefore, infliximab could be used as an adjuvant therapy in improving renal IR.
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Affiliation(s)
- Hoda E Mohamad
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt.
| | - Mervat E Asker
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
| | - Mohammed M Keshawy
- Department of Internal Medicine, Nephrology Division, Faculty of Medicine, Ismailia, 41522, Suez Canal University, Egypt
| | - Sara M Abdel Aal
- Department of Histology& Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Yasmin K Mahmoud
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
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Rodríguez-Pérez C, García-Villanova B, Guerra-Hernández E, Verardo V. Grape Seeds Proanthocyanidins: An Overview of In Vivo Bioactivity in Animal Models. Nutrients 2019; 11:E2435. [PMID: 31614852 PMCID: PMC6835351 DOI: 10.3390/nu11102435] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/26/2019] [Accepted: 10/02/2019] [Indexed: 12/22/2022] Open
Abstract
Over the last decade, proanthocyanidins (PACs) are attracting attention not only from the food industry but also from public health organizations due to their health benefits. It is well-known that grapes are a good source of PACs and for that reason, the industry is also focused on grape by-products identification and bioactivity evaluation. Grape seeds extract (GSPE) is a rich source of PACs, mainly composed of monomeric catechin and epicatechin, gallic acid and polymeric and oligomeric proanthocyanidins. Thus, this review encompasses the state-of-art structure and the most recent evidence about the impact of GSPE on chronic diseases, with a focus on oxidative stress, inflammation and metabolic syndrome (MeS)-related disorders such as obesity, diabetes and cardiovascular risk disease in vivo to offer new perspectives in the field that allow further research. Despite the controversial results, is undeniable that PACs from grape seeds are highly antioxidants, thus, the capacity of GSPE to improve oxidative stress might mediate the inflammation process and the progress of MeS-related pathologies. However, further well-design animal studies with standardized dosages and GSPE composition are necessary to shed light into the cause-effect relationship in a more accurate way to later allow a deeper study of the effect of GSPE in humans.
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Affiliation(s)
- Celia Rodríguez-Pérez
- Department of Nutrition and Food Science, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
- Institute of Nutrition and Food Technology (INYTA) 'José Mataix', Biomedical Research Centre, University of Granada, Avenida del Conocimiento s/n, E-18071 Granada, Spain.
| | - Belén García-Villanova
- Department of Nutrition and Food Science, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
| | - Eduardo Guerra-Hernández
- Department of Nutrition and Food Science, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
| | - Vito Verardo
- Department of Nutrition and Food Science, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
- Institute of Nutrition and Food Technology (INYTA) 'José Mataix', Biomedical Research Centre, University of Granada, Avenida del Conocimiento s/n, E-18071 Granada, Spain.
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Yogalakshmi B, Sathiya Priya C, Anuradha CV. Grape seed proanthocyanidins and metformin combination attenuate hepatic endoplasmic reticulum stress in rats subjected to nutrition excess. Arch Physiol Biochem 2019; 125:174-183. [PMID: 29482356 DOI: 10.1080/13813455.2018.1444058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
CONTEXT Endoplasmic reticulum (ER) stress in the liver is a pathological outcome of nutrient excess and is suggested to be one of the hits for progressive liver injury. OBJECTIVE This study investigated whether grape seed proanthocyanidins (GSP) and metformin (MET) alone or in combination can relieve hepatic ER stress induced in rats subjected to calorie excess. MATERIAL AND METHODS Male albino Wistar rats were given high calorie diet (HCD) for 45 days, while GSP (100 mg/kg body weight) and MET (50 mg/kg body weight) were administered either alone or in combination for last 15 days. RESULTS GSP, MET or both had reduced the levels of ER stress markers and chaperons, and suppressed the activation of lipogenic and inflammatory mediators in rat liver. DISCUSSION Though GSP and MET had reduced ER stress and inflammation individually, combination treatment with GSP + MET was more effective. CONCLUSION We suggest intervention with GSP and MET intake has to be considered for the management of liver disorders.
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Affiliation(s)
- Baskaran Yogalakshmi
- a Department of Biochemistry and Biotechnology , Annamalai University , Annamalai Nagar , India
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15
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Kalpana K, Priyadarshini E, Sreeja S, Jagan K, Anuradha CV. Scopoletin intervention in pancreatic endoplasmic reticulum stress induced by lipotoxicity. Cell Stress Chaperones 2018; 23:857-869. [PMID: 29574508 PMCID: PMC6111101 DOI: 10.1007/s12192-018-0893-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/03/2018] [Accepted: 03/12/2018] [Indexed: 12/29/2022] Open
Abstract
Endoplasmic reticulum (ER), a dynamic organelle, plays an essential role in organizing the signaling pathways involved in cellular adaptation, resilience, and survival. Impairment in the functions of ER occurs in a variety of nutritive disorders including obesity and type 2 diabetes. Here, we hypothesize that (scopoletin) SPL, a coumarin, has the potential to alleviate ER stress induced in vitro and in vivo models by lipotoxicity. To test this hypothesis, the ability of SPL to restore the levels of proteins of ER stress was analyzed. Rat insulinoma 5f (RIN5f) cells and Sprague Dawley rats were the models used for this study. Groups of control and high-fat, high-fructose diet (HFFD)-fed rats were treated with either SPL or 4-phenylbutyric acid. Status of ER stress was enumerated by quantitative RT-PCR, Western blot, electron microscopic, and immunohistochemical studies. Proximal proteins of ER stress inositol requiring enzyme 1 (IRE1), protein kinase like endoplasmic reticulum kinase (PERK), and activating transcription factor 6 (ATF6) were reduced in the β-cells by SPL. The subsequent signaling proteins X-box binding protein 1, eukaryotic initiation factor2α, activating transcription factor 4, and C/EBP homologous protein were also suppressed in their expression levels when treated with SPL. IRE1, PERK signaling leads to c-Jun-N-terminal kinases phosphorylation, a kinase that interrupts insulin signaling, which was also reverted upon scopoletin treatment. Finally, we confirm that SPL has the ability to suppress the stress proteins and limit pancreatic ER stress which might help in delaying the progression of insulin resistance.
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Affiliation(s)
- Kalaivanan Kalpana
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, 608002, India
| | - Emayavaramban Priyadarshini
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, 608002, India
| | - S Sreeja
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, 608002, India
| | - Kalivarathan Jagan
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, 608002, India
| | - Carani Venkatraman Anuradha
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, 608002, India.
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Kalpana K, Sathiya Priya C, Dipti N, Vidhya R, Anuradha CV. Supplementation of scopoletin improves insulin sensitivity by attenuating the derangements of insulin signaling through AMPK. Mol Cell Biochem 2018; 453:65-78. [PMID: 30145644 DOI: 10.1007/s11010-018-3432-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 08/16/2018] [Indexed: 02/05/2023]
Abstract
Scopoletin (SPL), a phenolic coumarin, is reported to regulate glucose metabolism. This study is initiated to substantiate the action of SPL on the regulation of insulin signaling in insulin resistant RIN5f cells and high fat, high fructose diet (HFFD)-fed rat model. Adult male Sprague Dawley rats were fed HFFD for 45 days to induce type 2 diabetes and then treated or untreated with SPL for the next 45 days. The levels of glucose, insulin, lipid profile, oxidative stress markers along with insulin signaling and AMPK protein expressions were examined at the end of 90 days. SPL lowered the levels of plasma glucose, insulin, and lipids which were increased in HFFD-fed rats. HFFD intake suppressed the activities of antioxidant enzymes such as superoxide dismutase, catalase, and glutathione peroxidase; however, they were reversed by SPL supplementation, which reduced TBARS, lipid hydroperoxide, and protein carbonyl levels both in plasma and pancreas. SPL supplementation significantly activated insulin receptor substrate 1 (IRS1), phosphatidyl inositol 3-kinase (PI3K), and protein kinase B (Akt) phosphorylation which was suppressed in HFFD rats due to lipotoxicity. Moreover, SPL significantly activated AMPK and enhanced the association of IRS1-PI3K-Akt compared to the control group. The results revealed that SPL alleviated T2D induced by HFFD by escalating the antioxidant levels and through insulin signaling regulation. We conclude that SPL can improve insulin signaling through AMPK, thereby confirming the role of SPL as an AMPK activator.
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Affiliation(s)
- Kalaivanan Kalpana
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram, Tamil Nadu, 608002, India
| | - Chandrasekaran Sathiya Priya
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram, Tamil Nadu, 608002, India
| | - Nanda Dipti
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram, Tamil Nadu, 608002, India
| | - Ramachandran Vidhya
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram, Tamil Nadu, 608002, India
| | - Carani Venkatraman Anuradha
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram, Tamil Nadu, 608002, India.
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17
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Van Hul M, Geurts L, Plovier H, Druart C, Everard A, Ståhlman M, Rhimi M, Chira K, Teissedre PL, Delzenne NM, Maguin E, Guilbot A, Brochot A, Gérard P, Bäckhed F, Cani PD. Reduced obesity, diabetes, and steatosis upon cinnamon and grape pomace are associated with changes in gut microbiota and markers of gut barrier. Am J Physiol Endocrinol Metab 2018; 314:E334-E352. [PMID: 28874357 DOI: 10.1152/ajpendo.00107.2017] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Increasing evidence suggests that polyphenols have a significant potential in the prevention and treatment of risk factors associated with metabolic syndrome. The objective of this study was to assess the metabolic outcomes of two polyphenol-containing extracts from cinnamon bark (CBE) and grape pomace (GPE) on C57BL/6J mice fed a high-fat diet (HFD) for 8 wk. Both CBE and GPE were able to decrease fat mass gain and adipose tissue inflammation in mice fed a HFD without reducing food intake. This was associated with reduced liver steatosis and lower plasma nonesterified fatty acid levels. We also observed a beneficial effect on glucose homeostasis, as evidenced by an improved glucose tolerance and a lower insulin resistance index. These ameliorations of the overall metabolic profile were associated with a significant impact on the microbial composition, which was more profound for the GPE than for the CBE. At the genus level, Peptococcus were decreased in the CBE group. In the GPE-treated group, several key genera that have been previously found to be linked with HFD, metabolic effects, and gut barrier integrity were affected: we observed a decrease of Desulfovibrio, Lactococcus, whereas Allobaculum and Roseburia were increased. In addition, the expression of several antimicrobial peptides and tight junction proteins was increased in response to both CBE and GPE supplementation, indicating an improvement of the gut barrier function. Collectively, these data suggest that CBE and GPE can ameliorate the overall metabolic profile of mice on a high-fat diet, partly by acting on the gut microbiota.
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Affiliation(s)
- Matthias Van Hul
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Lucie Geurts
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Hubert Plovier
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Céline Druart
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Amandine Everard
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Marcus Ståhlman
- Wallenberg Laboratory, University of Gothenburg , Gothenburg , Sweden
| | - Moez Rhimi
- Micalis, Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay , Jouy-en-Josas , France
| | - Kleopatra Chira
- Université Bordeaux, Institut des Sciences de la Vigne et du Vin (ISVV), EA 4577 Œnologie, Villenave d'Ornon, France
- INRA, ISVV, USC 1366 Œnologie, Villenave d'Ornon, France
| | - Pierre-Louis Teissedre
- Université Bordeaux, Institut des Sciences de la Vigne et du Vin (ISVV), EA 4577 Œnologie, Villenave d'Ornon, France
- INRA, ISVV, USC 1366 Œnologie, Villenave d'Ornon, France
| | - Nathalie M Delzenne
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
| | - Emmanuelle Maguin
- Micalis, Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay , Jouy-en-Josas , France
| | | | | | - Philippe Gérard
- Micalis, Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay , Jouy-en-Josas , France
| | - Fredrik Bäckhed
- Wallenberg Laboratory, University of Gothenburg , Gothenburg , Sweden
- Novo Nordisk Foundation Center for Basic Metabolic Research, Section for Metabolic Receptology and Enteroendocrinology, Faculty of Health Sciences, University of Copenhagen , Copenhagen , Denmark
| | - Patrice D Cani
- Université Catholique de Louvain, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Metabolism and Nutrition Research Group , Brussels , Belgium
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Shojaei Zarghani S, Abbaszadeh S, Alizadeh M, Rameshrad M, Garjani A, Soraya H. The Eeffect of Metformin Combined with Calcium-Vitamin D 3 Against Diet-Induced Nonalcoholic Fatty Liver Disease. Adv Pharm Bull 2018; 8:97-105. [PMID: 29670844 PMCID: PMC5896400 DOI: 10.15171/apb.2018.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 01/24/2018] [Accepted: 02/06/2018] [Indexed: 01/21/2023] Open
Abstract
Purpose: Metformin is one of the most popular drugs tested against nonalcoholic fatty liver disease (NAFLD). The present study aimed to investigate whether calcium-vitamin D3 cosupplementation will intensify the effect of metformin on the prevention of high-fat, high-fructose (HFFr) diet-induced hepatic steatosis. Methods: Male wistar rats (210±16 g) were assigned into the following seven groups: a Control group to receive a standard chow and six HFFr-fed groups to receive diets containing either normal (0.5% calcium and 1000 IU/kg vitamin D3) or high amount of calcium and vitamin D3 (2.4% calcium and 10000 IU/kg vitamin D3) (CaD), in combination with gastric gavage administration of either saline or 25 or 200 mg/kg body weight/day metformin. After 60 days, rats were assessed with respect to their anthropometric, metabolic and hepatic parameters, as well as their hepatic AMP-activated protein kinase (AMPK) phosphorylation. Results: Metformin and CaD, either alone or in combination, caused a significant reduction in HFFr diet-induced high serum aspartate aminotransferase (AST), hepatic steatosis and lipid accumulation without effect on insulin resistance and AMPK phosphorylation. In addition, slightly (and non-significantly) better effects of the combination in ameliorating steatosis and hepatic cholesterol content were observed. Conclusion: Taken together, our results suggest that metformin and CaD could protect against the onset of HFFr diet-induced NAFLD in an insulin and AMPK-independent manner, without any marked additional benefits of their combination.
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Affiliation(s)
| | - Samin Abbaszadeh
- Cellular and Molecular Research Center, Department of Pharmacology, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohammad Alizadeh
- Department of Nutrition, Food and Beverages Safety Research Center, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Maryam Rameshrad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alireza Garjani
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Soraya
- Cellular and Molecular Research Center, Department of Pharmacology, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
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Hong SH, Kim M, Woo M, Song YO. Effects of ingredients of Korean brown rice cookies on attenuation of cholesterol level and oxidative stress in high-fat diet-fed mice. Nutr Res Pract 2017; 11:365-372. [PMID: 28989572 PMCID: PMC5621358 DOI: 10.4162/nrp.2017.11.5.365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/04/2017] [Accepted: 07/31/2017] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND/OBJECTIVES Owing to health concerns related to the consumption of traditional snacks high in sugars and fats, much effort has been made to develop functional snacks with low calorie content. In this study, a new recipe for Korean rice cookie, dasik, was developed and its antioxidative, lipid-lowering, and anti-inflammatory effects and related mechanisms were elucidated. The effects were compared with those of traditional rice cake dasik (RCD), the lipid-lowering effect of which is greater than that of traditional western-style cookies. MATERIALS/METHODS Ginseng-added brown rice dasik (GBRD) was prepared with brown rice flour, fructooligosaccharide, red ginseng extract, and propolis. Mice were grouped (n = 7 per group) into those fed a normal AIN-76 diet, a high-fat diet (HFD), and HFD supplemented with RCD or GBRD. Dasik in the HFD accounted for 7% of the total calories. The lipid, reactive oxygen species, and peroxynitrite levels, and degree of lipid peroxidation in the plasma or liver were determined. The expression levels of proteins involved in lipid metabolism and inflammation, and those of antioxidant enzymes were determined by western blot analysis. RESULTS The plasma and hepatic total cholesterol concentrations in the GBRD group were significantly decreased via downregulation of sterol regulatory element-binding protein-2 and 3-hydroxy-3-methylglutaryl-CoA reductase (P < 0.05). The hepatic peroxynitrite level was significantly lower, whereas glutathione was higher, in the GBRD group than in the RCD group. Among the antioxidant enzymes, catalase (CAT) and glutathione peroxidase (GPx) were significantly upregulated in the GBRD group (P < 0.05). In addition, nuclear factor-kappaB (NF-κB) expression in the GBRD group was significantly lower than that in the RCD group. CONCLUSIONS GBRD decreases the plasma and hepatic cholesterol levels by downregulating cholesterol synthesis. This new dasik recipe also improves the antioxidative and anti-inflammatory status in HFD-fed mice via CAT and GPx upregulation and NF-κB downregulation. These effects were significantly higher than those of RCD.
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Affiliation(s)
- Sun Hee Hong
- Department of Food Science and Nutrition and Kimchi Research Institute, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Korea
| | - Mijeong Kim
- Department of Food Science and Nutrition and Kimchi Research Institute, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Korea
| | - Minji Woo
- Department of Food Science and Nutrition and Kimchi Research Institute, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Korea
| | - Yeong Ok Song
- Department of Food Science and Nutrition and Kimchi Research Institute, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Korea
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20
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Liu HW, Wei CC, Chen YJ, Chen YA, Chang SJ. Flavanol-rich lychee fruit extract alleviates diet-induced insulin resistance via suppressing mTOR/SREBP-1 mediated lipogenesis in liver and restoring insulin signaling in skeletal muscle. Mol Nutr Food Res 2016; 60:2288-2296. [DOI: 10.1002/mnfr.201501064] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 02/29/2016] [Accepted: 05/04/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Hung-Wen Liu
- Department of Life Sciences; National Cheng Kung University; Tainan Taiwan
| | - Chu-Chun Wei
- Department of Life Sciences; National Cheng Kung University; Tainan Taiwan
| | - Yen-Ju Chen
- Department of Life Sciences; National Cheng Kung University; Tainan Taiwan
| | - Yun-An Chen
- Department of Life Sciences; National Cheng Kung University; Tainan Taiwan
| | - Sue-Joan Chang
- Department of Life Sciences; National Cheng Kung University; Tainan Taiwan
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Zou J, Qi F, Ye L, Yao S. Protective Role of Grape Seed Proanthocyanidins Against Ccl4 Induced Acute Liver Injury in Mice. Med Sci Monit 2016; 22:880-9. [PMID: 26986029 PMCID: PMC4801141 DOI: 10.12659/msm.895552] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background We investigated the effect of grape seed proanthocyanidins (GSPs) on carbon tetrachloride (CCl4)-induced acute liver injury. Material/Methods Sixty SPF KM mice were randomly divided into 6 groups: the control group, CCl4-model group, bifendate group (DDB group), and low-, moderate-, and high-dose GSP groups. The following parameters were measured: serum levels of alanine aminotransferase (ALT); aspartate aminotransferase (AST); tumor necrosis factor (TNF)-α; interleukin-6 (IL-6); high-mobility group box (HMGB)-1; body weight; liver, spleen, and thymus indexes; superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity; HMGB1 mRNA; malondialdehyde (MDA) content; hepatocyte proliferation; and changes in liver histology. Results Compared to the CCl4-model group, decreases in liver index and increases in thymus index significantly increased SOD and GSH-Px activities and reduced MDA content, and higher hepatocyte proliferative activity was found in all GSP dose groups and the DDB group (all P<0.001). Compared with the CCl4-model group, serum TNF-α and IL-6 levels and HMGB 1 mRNA and protein expressions decreased significantly in the high GSP dose group (all P<0.05). Conclusions Our results provide strong evidence that administration of GSPs might confer significant protection against CCl4-induced acute liver injury in mice.
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Affiliation(s)
- Jinfa Zou
- Department of Pathophysiology, Liaoning Medical University, Jinzhou, China (mainland)
| | - Fengjie Qi
- Department of Pathology, Liaoning Medical University, Jinzhou, China (mainland)
| | - Liping Ye
- Department of Pathophysiology, Liaoning Medical University, Jinzhou, China (mainland)
| | - Suyan Yao
- Department of Pathophysiology, Liaoning Medical University, Jinzhou, China (mainland)
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Akaberi M, Hosseinzadeh H. Grapes (Vitis vinifera) as a Potential Candidate for the Therapy of the Metabolic Syndrome. Phytother Res 2016; 30:540-56. [PMID: 26800498 DOI: 10.1002/ptr.5570] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/17/2015] [Accepted: 12/12/2015] [Indexed: 12/11/2022]
Abstract
Metabolic syndrome is associated with several disorders, including hypertension, diabetes, hyperlipidemia as well as cardiovascular diseases and stroke. Plant-derived polyphenols, compounds found in numerous plant species, play an important role as potential treatments for components of metabolic syndrome. Studies have provided evidence for protective effects of various polyphenol-rich foods against metabolic syndrome. Fruits, vegetables, cereals, nuts, and berries are rich in polyphenolic compounds. Grapes (Vitis vinifera), especially grape seeds, stand out as rich sources of polyphenol potent antioxidants and have been reported helpful for inhibiting the risk factors involved in the metabolic syndrome such as hyperlipidemia, hyperglycemia, and hypertension. There are also many studies about gastroprotective, hepatoprotective, and anti-obesity effects of grape polyphenolic compounds especially proanthocyanidins in the literature. The present study investigates the protective effects of grape seeds in metabolic syndrome. The results of this study show that grape polyphenols have significant effects on the level of blood glucose, lipid profile, blood pressure, as well as beneficial activities in liver and heart with various mechanisms. In addition, the pharmacokinetics of grape polyphenols is discussed. More detailed mechanistic investigations and phytochemical studies for finding the exact bioactive component(s) and molecular signaling pathways are suggested.
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Affiliation(s)
- Maryam Akaberi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hosein Hosseinzadeh
- Pharmaceutical Research Center, Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Sil R, Ray D, Chakraborti AS. Glycyrrhizin ameliorates metabolic syndrome-induced liver damage in experimental rat model. Mol Cell Biochem 2015; 409:177-89. [PMID: 26400710 DOI: 10.1007/s11010-015-2523-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 08/06/2015] [Indexed: 12/29/2022]
Abstract
Glycyrrhizin, a major constituent of licorice (Glycyrrhiza glabra) root, has been reported to ameliorate insulin resistance, hyperglycemia, dyslipidemia, and obesity in rats with metabolic syndrome. Liver dysfunction is associated with this syndrome. The objective of this study is to investigate the effect of glycyrrhizin treatment on metabolic syndrome-induced liver damage. After induction of metabolic syndrome in rats by high fructose (60%) diet for 6 weeks, the rats were treated with glycyrrhizin (50 mg/kg body weight, single intra-peritoneal injection). After 2 weeks of treatment, rats were sacrificed to collect blood samples and liver tissues. Compared to normal, elevated activities of serum alanine transaminase, alkaline phosphatase and aspartate transaminase, increased levels of liver advanced glycation end products, reactive oxygen species, lipid peroxidation, protein carbonyl, protein kinase Cα, NADPH oxidase-2, and decreased glutathione cycle components established liver damage and oxidative stress in fructose-fed rats. Activation of nuclear factor κB, mitogen-activated protein kinase pathways as well as signals from mitochondria were found to be involved in liver cell apoptosis. Increased levels of cyclooxygenase-2, tumor necrosis factor, and interleukin-12 proteins suggested hepatic inflammation. Metabolic syndrome caused hepatic DNA damage and poly-ADP ribose polymerase cleavage. Fluorescence-activated cell sorting using annexin V/propidium iodide staining confirmed the apoptotic hepatic cell death. Histology of liver tissue also supported the experimental findings. Treatment with glycyrrhizin reduced oxidative stress, hepatic inflammation, and apoptotic cell death in fructose-fed rats. The results suggest that glycyrrhizin possesses therapeutic potential against hepatocellular damage in metabolic syndrome.
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Affiliation(s)
- Rajarshi Sil
- Department of Biophysics, Molecular Biology and Bioinformatics, University College of Science, University of Calcutta, 92 Acharyya Prafulla Chandra Road, Kolkata, West Bengal, 700009, India
| | - Doel Ray
- Department of Biophysics, Molecular Biology and Bioinformatics, University College of Science, University of Calcutta, 92 Acharyya Prafulla Chandra Road, Kolkata, West Bengal, 700009, India.,School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abhay Sankar Chakraborti
- Department of Biophysics, Molecular Biology and Bioinformatics, University College of Science, University of Calcutta, 92 Acharyya Prafulla Chandra Road, Kolkata, West Bengal, 700009, India.
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Liu J, Ye C, Liu W, Zhao W, Zhang YJ, Zhang H, Ying H. AICAR enhances insulin signaling via downregulation of miR-29. Can J Physiol Pharmacol 2015; 94:199-205. [PMID: 26359920 DOI: 10.1139/cjpp-2015-0159] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As an activator of AMPK, the effect of AICAR on insulin signaling has not been investigated extensively. PI3K-Akt is a critical node involved in the insulin signaling pathway. We observed that concomitant with the activation of AMPK by AICAR, the protein level of PI3K p85α and the insulin-induced phosphorylation of Akt were enhanced in mouse primary hepatocytes. Previously, we identified a group of AMPK-regulated miRNAs in hepatocytes. It is not clear whether miRNAs are related to the regulation of insulin signaling by AMPK. Here, we confirmed the negative regulation of miR-29 family members by AICAR treatment in mouse primary hepatocytes. Our results indicated that p85α is a direct target of miR-29 and is negatively regulated by miR-29b in hepatocytes. In agreement with the findings in vitro, we found that the expression of miR-29 and the protein levels of p85α were inversely correlated in the liver of fasted mice. Overexpression of miR-29b reduced the insulin-induced phosphorylation of Akt in hepatocytes, suggesting that miR-29 could serve as a negative regulator of insulin signaling. Furthermore, we found that overexpression of miR-29 could attenuate the effect of AICAR on p85α expression. Taken together, our results indicated that activation of AMPK may enhance insulin signaling via downregulation of miR-29.
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Affiliation(s)
- Jia Liu
- a 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, 66 Tong-an Road, Tianjin 300070, China
| | - Cheng Ye
- b Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-yang Road, Shanghai 200031, China
| | - Wei Liu
- b Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-yang Road, Shanghai 200031, China
| | - Wei Zhao
- a 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, 66 Tong-an Road, Tianjin 300070, China
| | - Ya-Jing Zhang
- a 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, 66 Tong-an Road, Tianjin 300070, China
| | - Hong Zhang
- a 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, 66 Tong-an Road, Tianjin 300070, China
| | - Hao Ying
- b Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-yang Road, Shanghai 200031, China.,c Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China
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25
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Molecular and immunohistochemical effects of metformin in a rat model of type 2 diabetes mellitus. Exp Ther Med 2015; 9:1921-1930. [PMID: 26136915 DOI: 10.3892/etm.2015.2354] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 03/05/2015] [Indexed: 12/14/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a serious health issue worldwide. The disease is characterized by insulin resistance (IR), which leads to dyslipidemia and alterations in the expression levels of a number of genes. Metformin is the standard treatment for T2DM; however, the exact mechanism underlying metformin regulation is not fully understood. The aim of the present study was to investigate the effects of metformin on serum lipid profiles and the expression levels of various genes that are associated with IR, as well as the histopathological changes in the liver and pancreas. A T2DM rat model was established by feeding the rats a high-fat diet for 4 weeks, combined with a dose of streptozotocin (35 mg/kg body weight). Following the successful induction of T2DM, metformin was administered orally (400 mg/kg/day) for 4 weeks. The results indicated that metformin improved the symptoms of IR by normalizing the serum lipid profiles in the diabetic rats. Furthermore, metformin upregulated the expression of insulin receptors and genes associated with lipid metabolism, including acyl-CoA oxidase, carnitine palmitoyl transferase-1 and peroxisome proliferator activated receptor-α. In addition, treatment with metformin downregulated the expression levels of fetuin-A and retinol binding protein-4 (RBP-4), while normalizing the expression of perilipin that had been reduced in the T2DM rats. Metformin administration induced regenerative changes in the hepatocyte cytoplasm and parenchyma. In the pancreas, treatment with metformin was shown to induce positive signaling for insulin and the regeneration of pancreatic β cells. In summary, metformin treatment ameliorated a number of the harmful effects associated with T2DM via the modulation of the expression levels of fetuin-A, RBP-4, perilipin and various genes associated with lipid metabolism, resulting in regenerative changes in the liver and pancreatic cells.
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Yan SL, Yang HT, Lee YJ, Lin CC, Chang MH, Yin MC. Asiatic acid ameliorates hepatic lipid accumulation and insulin resistance in mice consuming a high-fat diet. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:4625-4631. [PMID: 24779966 DOI: 10.1021/jf501165z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Effects of asiatic acid (AA) at 10 or 20 mg/kg/day upon hepatic steatosis in mice consuming a high-fat diet (HFD) were examined. AA intake decreased body weight, water intake, feed intake, epididymal fat, and plasma and hepatic triglyceride levels in HFD-treated mice (P < 0.05). HFD enhanced 2.85-fold acetyl coenzyme A carboxylase (ACC1), 3.34-fold fatty acid synthase (FAS), 3.71-fold stearoyl CoA desaturase (SCD)-1, 3.62-fold 3-hydroxy-3-methylglutaryl coenzyme A reductase, 2.91-fold sterol regulatory element-binding protein (SREBP)-1c, and 2.75-fold SREBP-2 expression in liver (P < 0.05). Compared with HFD groups, AA intake at two doses reduced 18.9-45.7% ACC1, 25.1-49.8% FAS, 24.7-57.1% SCD-1, and 21.8-53.3% SREBP-1c protein expression (P < 0.05). Histological results indicated AA intake at two doses reduced hepatic lipid accumulation and inflammatory infiltrate. HFD increased hepatic production of reactive oxygen species, interleukin (IL)-1β, IL-6, and tumor necrosis factor-α, as well as decreased hepatic glutathione content and glutathione peroxidase and catalase activities (P < 0.05). AA intake at two doses reversed these alterations (P < 0.05). AA intake suppressed 32.4-58.8% nuclear factor kappa (NF-κ)B p65 and 24.2-56.7% p-p38 expression (P < 0.05) and at high dose down-regulated 29.1% NF-κB p50 and 40.7% p-JNK expression in livers from HFD-treated mice. AA intake at two doses lowered plasma insulin secretion and HOMR-IR (P < 0.05). These results suggest that AA is a potent hepatic protective agent against HFD-induced hepatic injury.
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Affiliation(s)
- Sheng-Lei Yan
- Division of Gastroenterology, Department of Internal Medicine, Chang Bing Show-Chwan Memorial Hospital , Changhua County, Taiwan
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