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Chew HSJ, Soong RY, Teo YQJ, Flølo TN, Chong B, Yong CL, Ang SH, Ho Y, Chew NWS, So JBY, Shabbir A. Anthropometric and cardiometabolic effects of polyphenols in people with overweight and obesity: an umbrella review. Nutr Rev 2024:nuad163. [PMID: 38213191 DOI: 10.1093/nutrit/nuad163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024] Open
Abstract
CONTEXT Polyphenols are plant-based compounds with potential anti-inflammatory, antioxidant, and anti-obesogenic properties. However, their effects on health outcomes remain unclear. OBJECTIVE To evaluate the effects of polyphenols on anthropometric and cardiometabolic markers. DATA SOURCES Six electronic databases-namely, EMBASE, CINAHL, PubMed, Scopus, The Cochrane Library (reviews only), and Web of Science-were searched for relevant systematic reviews with meta-analyses (SRMAs). DATA EXTRACTION Three reviewers performed the data extraction via a data-extraction Microsoft Excel spreadsheet. DATA ANALYSIS An umbrella review and meta-analysis of existing SRMAs was conducted. Eighteen SRMAs published from 2015 to 2023, representing 445 primary studies and 838 unique effect sizes, were identified. Meta-analyses were conducted using random-effects models with general inverse variance. Polyphenol-containing foods were found to significantly improve weight (-0.36 kg; 95% confidence interval [CI]: -0.62, 0.77 kg; P < 0.01, I2 = 64.9%), body mass index (-0.25 kg/m2; 95% CI: -0.34, -0.17 kg/m2; P < 0.001, I2 = 82.4%), waist circumference (-0.74 cm; 95% CI: -1.34, -0.15 cm; P < 0.01, I2 = 99.3%), low-density-lipoprotein cholesterol (-1.75 mg/dL; 95% CI: -2.56, -0.94; P < 0.001, I2 = 98.6%), total cholesterol (-1.23 mg/dL; 95% CI: -2.00, -0.46; P = 0.002, I2 = 94.6%), systolic blood pressure (-1.77 mmHg; 95% CI: -1.77, -0.93 mmHg; P < 0.001, I2 = 72.4%), diastolic blood pressure (-1.45 mmHg; 95% CI: -2.09, -0.80 mmHg; P < 0.001, I2 = 61.0%), fat percentage (-0.70%; 95% CI: -1.03, -0.36%; P < 0.001, I2 = 52.6%), fasting blood glucose (-0.18 mg/dL; 95% CI: -0.35, -0.01 mg/dL; P = 0.04, I2 = 62.0%), and C-reactive protein (CRP; including high-sensitivity-CRP [hs-CRP]) (-0.2972 mg/dL; 95% CI: -0.52, -0.08 mg/dL; P = 0.01, I2 = 87.9%). No significant changes were found for high-density-lipoprotein cholesterol (-0.12 mg/dL; 95% CI: -1.44, 0.69; P = 0.67, I2 = 89.4%) and triglycerides (-1.29 mg/dL; 95% CI: -2.74, 0.16; P = 0.08, I2 = 85.4%). Between-study heterogeneity could be explained by polyphenol subclass differences. CONCLUSION The findings of this umbrella review support the beneficial effects of polyphenols on anthropometric and metabolic markers, but discretion is warranted to determine the clinical significance of the magnitude of the biomarker improvements. SYSTEMATIC REVIEW REGISTRATION International Prospective Register of Systematic Reviews no. CRD42023420206.
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Affiliation(s)
- Han Shi Jocelyn Chew
- Alice Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Rou Yi Soong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yu Qing Jolene Teo
- University of Medicine and Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Tone Nygaard Flølo
- Department of Nursing and Health Promotion, Oslo Metropolitan University, Oslo, Norway
- Department of Surgery, Voss Hospital, Haukeland University Hospital, Voss, Norway
| | - Bryan Chong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Cai Ling Yong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Shi Han Ang
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yishen Ho
- Department of Food Science and Technology, National University of Singapore, Singapore
| | | | | | - Asim Shabbir
- Department of Surgery, National University Hospital, Singapore
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Gauttam VK, Munjal K, Chopra H, Ahmad A, Rana MK, Kamal MA. A Mechanistic Review on Therapeutic Potential of Medicinal Plants and their Pharmacologically Active Molecules for Targeting Metabolic Syndrome. Curr Pharm Des 2024; 30:10-30. [PMID: 38155468 DOI: 10.2174/0113816128274446231220113957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/06/2023] [Indexed: 12/30/2023]
Abstract
Metabolic syndrome (MetS) therapy with phytochemicals is an emerging field of study with therapeutic potential. Obesity, insulin resistance, high blood pressure, and abnormal lipid profiles are all components of metabolic syndrome, which is a major public health concern across the world. New research highlights the promise of phytochemicals found in foods, including fruits, vegetables, herbs, and spices, as a sustainable and innovative method of treating this illness. Anti-inflammatory, antioxidant, and insulin-sensitizing qualities are just a few of the many positive impacts shown by bioactive substances. Collectively, they alleviate the hallmark symptoms of metabolic syndrome by modulating critical metabolic pathways, boosting insulin sensitivity, decreasing oxidative stress, and calming chronic low-grade inflammation. In addition, phytochemicals provide a multimodal strategy by targeting not only adipose tissue but also the liver, skeletal muscle, and vascular endothelium, all of which have a role in the pathogenesis of MetS. Increasing evidence suggests that these natural chemicals may be useful in controlling metabolic syndrome as a complementary treatment to standard medication or lifestyle changes. This review article emphasizes the therapeutic potential of phytochemicals, illuminating their varied modes of action and their ability to alleviate the interconnected causes of metabolic syndrome. Phytochemical-based interventions show promise as a novel and sustainable approach to combating the rising global burden of metabolic syndrome, with the ultimate goal of bettering public health and quality of life.
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Affiliation(s)
- Vinod Kumar Gauttam
- Department of Pharmacognosy, Shiva Institute of Pharmacy, Bilaspur, Hmachal Pradesh, India
| | - Kavita Munjal
- Department of Pharmacognosy, Amity Institute of Pharmacy, Amity University, Noida, Uttar Pradesh, India
| | - Hitesh Chopra
- Department of Biosciences, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, Tamil Nadu, India
| | - Aftab Ahmad
- Department of Pharmacology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mahesh Kumar Rana
- Department of Agriculture, M.M. (Deemed to be University), Mullana, Ambala, Haryana, India
| | - Mohammad Amjad Kamal
- Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, China
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
- Enzymoics, 7 Peterlee Place, Hebersham, NSW 2770, Australia
- Novel Global Community Educational Foundation, Hebersham, NSW 2770, Australia
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Mohsin SN, Saleem F, Humayun A, Tanweer A, Muddassir A. Prospective Nutraceutical Effects of Cinnamon Derivatives Against Insulin Resistance in Type II Diabetes Mellitus-Evidence From the Literature. Dose Response 2023; 21:15593258231200527. [PMID: 37701673 PMCID: PMC10494518 DOI: 10.1177/15593258231200527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
Apart from advances in pharmaceutical antidiabetic agents, efforts are being made toward hypoglycemic agents derived from natural sources. Cinnamon has been reported to have significant benefits for human health, particularly as an anti-inflammatory, antidiabetic, and anti-hypertriglyceridemic agent. The phytochemicals in cinnamon can be extracted from different parts of plant by distillation and solvent extraction. These chemicals help in decreasing insulin resistance and can act against hyperglycemia and dyslipidemia, inflammation and oxidative stress, obesity, overweight, and abnormal glycation of proteins. Cinnamon has shown to improve all of these conditions in in vitro, animal, and/or human studies. However, the mechanism of action of active ingredients found in cinnamon remains unclear. The current review presents the outstanding ability of cinnamon derivatives to control diabetes by various pathways modulating insulin release and insulin receptor signaling. It was also found that the type and dosage of cinnamon as well as subject characteristics including drug interactions are likely to affect the response to cinnamon. Future research directions based on this review include the synergistic usage of various cinnamon derivatives in managing and/or preventing diabetes and possible other relevant chronic diseases.
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Affiliation(s)
- Saima Naz Mohsin
- NIH, HRI, Research Center NHRC, Shaikh Zayed Post Graduate Medical Institute, Lahore, Pakistan
| | - Faiza Saleem
- Department of Biotechnology, Lahore College for Women University, Lahore, Pakistan
| | - Ayesha Humayun
- Department of Public Health and Community Medicine, Shaikh Zayed Postgraduate Medical Institute, Lahore, Pakistan
| | - Afifa Tanweer
- Department of Nutrition & Dietetics, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Ambreen Muddassir
- Department of Medicine, Shaikh Zayed Post Graduate Medical Institute, Lahore, Pakistan
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Moreira LDSG, Brum IDSDC, de Vargas Reis DCM, Trugilho L, Chermut TR, Esgalhado M, Cardozo LFMF, Stenvinkel P, Shiels PG, Mafra D. Cinnamon: an aromatic condiment applicable to chronic kidney disease. Kidney Res Clin Pract 2023; 42:4-26. [PMID: 36747357 PMCID: PMC9902738 DOI: 10.23876/j.krcp.22.111] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/14/2022] [Indexed: 02/01/2023] Open
Abstract
Cinnamon, a member of the Lauraceae family, has been widely used as a spice and traditional herbal medicine for centuries and has shown beneficial effects in cardiovascular disease, obesity, and diabetes. However, its effectiveness as a therapeutic intervention for chronic kidney disease (CKD) remains unproven. The bioactive compounds within cinnamon, such as cinnamaldehyde, cinnamic acid, and cinnamate, can mitigate oxidative stress, inflammation, hyperglycemia, gut dysbiosis, and dyslipidemia, which are common complications in patients with CKD. In this narrative review, we assess the mechanisms by which cinnamon may alleviate complications observed in CKD and the possible role of this spice as an additional nutritional strategy for this patient group.
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Affiliation(s)
| | | | | | - Liana Trugilho
- Graduate Program in Medical Sciences, Fluminense Federal University, Niterói, Brazil
| | - Tuany R. Chermut
- Graduate Program in Nutrition Sciences, Fluminense Federal University, Niterói, Brazil
| | - Marta Esgalhado
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University, Niterói, Brazil
| | | | - Peter Stenvinkel
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden,Correspondence: Peter Stenvinkel Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska University Hospital M99, 141 86 Stockholm, Sweden. E-mail:
| | - Paul G. Shiels
- Institute of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Denise Mafra
- Graduate Program in Medical Sciences, Fluminense Federal University, Niterói, Brazil,Graduate Program in Nutrition Sciences, Fluminense Federal University, Niterói, Brazil,Graduate Program in Biological Sciences – Physiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Hameed A, Adamska-Patruno E, Godzien J, Czajkowski P, Miksza U, Pietrowska K, Fiedorczuk J, Moroz M, Bauer W, Sieminska J, Górska M, Krętowski AJ, Ciborowski M. The Beneficial Effect of Cinnamon and Red Capsicum Intake on Postprandial Changes in Plasma Metabolites Evoked by a High-Carbohydrate Meal in Men with Overweight/Obesity. Nutrients 2022; 14:nu14204305. [PMID: 36296989 PMCID: PMC9610620 DOI: 10.3390/nu14204305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 01/24/2023] Open
Abstract
The relationship of high-carbohydrate (HC) meal intake to metabolic syndrome is still not fully explained. Metabolomics has the potential to indicate metabolic pathways altered by HC meals, which may improve our knowledge regarding the mechanisms by which HC meals may contribute to metabolic syndrome development. The fasting and postprandial metabolic response to HC or normo-carbohydrate (NC) meals with/without cinnamon + capsicum intake was evaluated using untargeted metabolomics and compared between normal-weight (NW) and overweight/obese (OW/OB) healthy men. Healthy male participants (age-matched) were divided into two groups (12 subjects per group). One was composed of men with normal weight (NW) and the other of men with overweight/obesity (OW/OB). On separate visits (with 2-3 week intervals), the participants received standardized HC or NC meals (89% or 45% carbohydrates, respectively). Fasting (0 min) and postprandial (30, 60, 120, 180 min) blood were collected for untargeted plasma metabolomics. Based on each metabolic feature's intensity change in time, the area under the curve (AUC) was calculated. Obtained AUCs were analyzed using multivariate statistics. Several metabolic pathways were found dysregulated after an HC meal in people from the OW/OB group but not the NW group. The consumption of HC meals by people with overweight/obesity led to a substantial increase in AUC, mainly for metabolites belonging to phospholipids and fatty acid amides. The opposite was observed for selected sphingolipids. The intake of cinnamon and capsicum normalized the concentration of selected altered metabolites induced by the intake of HC meals. A HC meal may induce an unfavourable postprandial metabolic response in individuals with overweight/obesity, and such persons should avoid HC meals.
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Affiliation(s)
- Ahsan Hameed
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Edyta Adamska-Patruno
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Joanna Godzien
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Przemyslaw Czajkowski
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Urszula Miksza
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Karolina Pietrowska
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Joanna Fiedorczuk
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Monika Moroz
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Witold Bauer
- Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Julia Sieminska
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
| | - Maria Górska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland
| | - Adam Jacek Krętowski
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Department of Nutriomics, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Support Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland
| | - Michal Ciborowski
- Metabolomics Laboratory, Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
- Correspondence:
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Abu Bakar MH, Mohamad Khalid MSF, Nor Shahril NS, Shariff KA, Karunakaran T. Celastrol attenuates high-fructose diet-induced inflammation and insulin resistance via inhibition of 11β-hydroxysteroid dehydrogenase type 1 activity in rat adipose tissues. Biofactors 2022; 48:111-134. [PMID: 34676604 DOI: 10.1002/biof.1793] [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] [Received: 05/15/2021] [Accepted: 09/27/2021] [Indexed: 11/10/2022]
Abstract
High fructose consumption has been linked to low-grade inflammation and insulin resistance that results in increased intracellular 11ß-hydroxysteroid dehydrogenase type 1 (11β-HSD1) activity. Celastrol, a pentacyclic triterpene, has been demonstrated to exhibit multifaceted targets to attenuate various metabolic diseases associated with inflammation. However, the underlying mechanisms by which celastrol exerts its attributive properties on high fructose diet (HFrD)-induced metabolic syndrome remain elusive. Herein, the present study was aimed to elucidate the mechanistic targets of celastrol co-administrations upon HFrD in rats and evaluate its potential to modulate 11β-HSD1 activity. Celastrol remarkably improved glucose tolerance, lipid profiles, and insulin sensitivity along with suppression of hepatic glucose production. In rat adipose tissues, celastrol attenuated nuclear factor-kappa B (NF-κB)-driven inflammation, reduced c-Jun N-terminal kinases (JNK) phosphorylation, and mitigated oxidative stress via upregulated genes expression involved in mitochondrial biogenesis. Furthermore, insulin signaling pathways were significantly improved through the restoration of Akt phosphorylation levels at Ser473 and Thr308 residues. Celastrol exhibited a potent, selective and specific inhibitor of intracellular 11β-HSD1 towards oxidoreductase activity (IC50 value = 4.3 nM) in comparison to other HSD-related enzymes. Inhibition of 11β-HSD1 expression in rat adipose microsomes reduced the availability of its cofactor NADPH and substrate H6PDH in couple to upregulated mRNA and protein expressions of glucocorticoid receptor. In conclusion, our results underscore the most likely conceivable mechanisms exhibited by celastrol against HFrD-induced metabolic dysregulations mainly through attenuating inflammation and insulin resistance, at least via specific inhibitions on 11β-HSD1 activity in adipose tissues.
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Affiliation(s)
- Mohamad Hafizi Abu Bakar
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, 11800, Gelugor, Penang, Malaysia
| | | | - Nor Shafiqah Nor Shahril
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, 11800, Gelugor, Penang, Malaysia
| | - Khairul Anuar Shariff
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia
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Shang C, Lin H, Fang X, Wang Y, Jiang Z, Qu Y, Xiang M, Shen Z, Xin L, Lu Y, Gao J, Cui X. Beneficial effects of cinnamon and its extracts in the management of cardiovascular diseases and diabetes. Food Funct 2021; 12:12194-12220. [PMID: 34752593 DOI: 10.1039/d1fo01935j] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cardiovascular diseases (CVDs) and diabetes are the leading causes of death worldwide, which underlines the urgent necessity to develop new pharmacotherapies. Cinnamon has been an eminent component of spice and traditional Chinese medicine for thousands of years. Numerous lines of findings have elucidated that cinnamon has beneficial effects against CVDs in various ways, including endothelium protection, regulation of immune response, lowering blood lipids, antioxidative properties, anti-inflammatory properties, suppression of vascular smooth muscle cell (VSMC) growth and mobilization, repression of platelet activity and thrombosis and inhibition of angiogenesis. Furthermore, emerging evidence has established that cinnamon improves diabetes, a crucial risk factor for CVDs, by enhancing insulin sensitivity and insulin secretion; regulating the enzyme activity involved in glucose; regulating glucose metabolism in the liver, adipose tissue and muscle; ameliorating oxidative stress and inflammation to protect islet cells; and improving diabetes complications. In this review, we summarized the mechanisms by which cinnamon regulates CVDs and diabetes in order to provide a theoretical basis for the further clinical application of cinnamon.
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Affiliation(s)
- Chang Shang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Hongchen Lin
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xuqin Fang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yuling Wang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Zhilin Jiang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
| | - Yi Qu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Mi Xiang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
| | - Zihuan Shen
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Laiyun Xin
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. .,First Clinical Medical School, Shandong University of Chinese Medicine, Shandong, 250355, China
| | - Yingdong Lu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
| | - Jialiang Gao
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
| | - Xiangning Cui
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
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Cinnamon as Dietary Supplement Caused Hyperlipidemia in Healthy Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9892088. [PMID: 34306160 PMCID: PMC8272659 DOI: 10.1155/2021/9892088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/18/2021] [Accepted: 06/26/2021] [Indexed: 11/20/2022]
Abstract
Objective Cinnamon is a cooking spice and a medicinal herb. It is increasingly used as a health supplement due to its perceived benefit to prevent and or manage type 2 diabetes and metabolic disorders. However, it is unclear if regular consumption of this medicinal plant will interfere with normal physiological functions. Therefore, this study investigated the impact of daily cinnamon supplements on glucose and lipid metabolic profiles in healthy rats. Methods Male rats (Sprague Dawley, 8 weeks) were supplied with cinnamon in their diet (equivalent to ∼1 g/day in humans) for two weeks. Blood glucose and lipid levels, as well as metabolic markers in both liver and abdominal white adipose tissue, were measured. Results Cinnamon significantly increased fat mass and blood cholesterol and low-density lipoprotein (LDL) levels, but reduced fasting blood glucose level by 12%. Liver functional enzymes were normal in rats consuming cinnamon. However, several lipid metabolic markers were impaired which may contribute to dyslipidemia, including two main switches for energy metabolism (sirtuin 1 and peroxisome proliferator-activated receptor-gamma coactivator-1α) and the LDL receptor. However, de novo lipid synthesis enzymes and inflammatory markers were also reduced in the liver by cinnamon treatment, which may potentially prevent the development of steatosis. Markers for lipid oxidation were downregulated in fat tissue in cinnamon-treated rats, contributing to increased fat accumulation. Conclusion Daily low-dose cinnamon supplementation seems to promote abdominal adipose tissue accumulation and disturb lipid homeostasis in healthy rats, raising the concerns regarding daily use in healthy people.
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Yuste S, Ludwig IA, Romero M, Piñol‐Felis C, Catalán Ú, Pedret A, Valls RM, Fernández‐Castillejo S, Motilva M, Macià A, Rubió L. Metabolic Fate and Cardiometabolic Effects of Phenolic Compounds from Red‐Fleshed Apple in Hypercholesterolemic Rats: A Comparative Study with Common White‐Fleshed Apple. The AppleCOR Study. Mol Nutr Food Res 2021; 65:e2001225. [DOI: 10.1002/mnfr.202001225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/02/2021] [Indexed: 12/15/2022]
Affiliation(s)
- Silvia Yuste
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
| | - Iziar A. Ludwig
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
- Department de Medicina i Cirurgia Facultat de Medicina i Ciències de la Salut Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC‐Salut) Universitat Rovira i Virgili C/Sant Llorenç 21 Reus 43201 Spain
| | - María‐Paz Romero
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
| | - Carme Piñol‐Felis
- Department of Medicine University of Lleida, Lleida Catalonia Spain
- Institut de Recerca Biomèdica de Lleida, Fundació Dr. Pifarré IRBLleida, Lleida Catalonia Spain
| | - Úrsula Catalán
- Department de Medicina i Cirurgia Facultat de Medicina i Ciències de la Salut Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC‐Salut) Universitat Rovira i Virgili C/Sant Llorenç 21 Reus 43201 Spain
- Eurecat Centre Tecnologic de Catalunya Unitat de Nutrició i Salut Reus Catalonia Spain
| | - Anna Pedret
- Department de Medicina i Cirurgia Facultat de Medicina i Ciències de la Salut Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC‐Salut) Universitat Rovira i Virgili C/Sant Llorenç 21 Reus 43201 Spain
- Eurecat Centre Tecnologic de Catalunya Unitat de Nutrició i Salut Reus Catalonia Spain
| | - Rosa M. Valls
- Department de Medicina i Cirurgia Facultat de Medicina i Ciències de la Salut Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC‐Salut) Universitat Rovira i Virgili C/Sant Llorenç 21 Reus 43201 Spain
- Eurecat Centre Tecnologic de Catalunya Unitat de Nutrició i Salut Reus Catalonia Spain
| | - Sara Fernández‐Castillejo
- Department de Medicina i Cirurgia Facultat de Medicina i Ciències de la Salut Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC‐Salut) Universitat Rovira i Virgili C/Sant Llorenç 21 Reus 43201 Spain
| | - María‐José Motilva
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
- Instituto de Ciencias de la Vid y del Vino (ICVV) Consejo Superior de Investigaciones Científicas‐CSIC, Gobierno de La Rioja, Universidad de La Rioja, Finca “La Grajera” Carretera de Burgos km 6 La Rioja 26007, Logroño Spain
| | - Alba Macià
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
| | - Laura Rubió
- Food Technology Department XaRTA‐TPV Agrotecnio Center Escola Tècnica Superior d'Enginyeria Agrària University of Lleida, Avda/Alcalde Rovira Roure 191 Catalonia 25198 Lleida Spain
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Chang TC, Chiang H, Lai YH, Huang YL, Huang HC, Liang YC, Liu HK, Huang C. Helminthostachys zeylanica alleviates hepatic steatosis and insulin resistance in diet-induced obese mice. Altern Ther Health Med 2019; 19:368. [PMID: 31836013 PMCID: PMC6911300 DOI: 10.1186/s12906-019-2782-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/29/2019] [Indexed: 12/27/2022]
Abstract
Background Obesity and its associated health conditions, type 2 diabetes mellitus (T2DM) and nonalcoholic fatty liver disease (NAFLD), are worldwide health problems. It has been shown that insulin resistance is associated with increased hepatic lipid and causes hepatic steatosis through a myriad of mechanisms, including inflammatory signaling. Methods Helminthostachys zeylanica (HZ) is used widely as a common herbal medicine to relieve fever symptoms and inflammatory diseases in Asia. In the present study, we evaluated whether HZ has therapeutic effects on obesity, NAFLD and insulin resistance. The protective effects of HZ extract were examined using free fatty acid-induced steatosis in human HuS-E/2 cells and a high-fat diet-induced NAFLD in mice. Results The major components of the HZ extract are ugonins J and K, confirmed by HPLC. Incubation of human hepatocytes, HuS-E/2 cells, with palmitate markedly increased lipid accumulation and treatment with the HZ extract significantly decreased lipid deposition and facilitated AMPK and ACC activation. After 12 weeks of a high-fat diet with HZ extract treatment, the HFD mice were protected from hyperlipidemia and hyperglycemia. HZ extract prevented body weight gain, adipose tissue expansion and adipocyte hypertrophy in the HFD mice. In addition, fat accumulation was reduced in mice livers. Moreover, the insulin sensitivity-associated index, which evaluates insulin function, was also significantly restored. Conclusions These results suggest that HZ has a promising pharmacological effect on high-fat diet-induced obesity, hepatic steatosis and insulin resistance, which may have the potential for clinical application.
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Lim SM, Lee HS, Jung JI, Kim SM, Kim NY, Seo TS, Bae JS, Kim EJ. Cyanidin-3- O-galactoside-enriched Aronia m elanocarpa extract attenuates weight gain and adipogenic pathways in high-fat diet-induced obese C57BL/6 mice. Nutrients 2019; 11:nu11051190. [PMID: 31137884 PMCID: PMC6566507 DOI: 10.3390/nu11051190] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/16/2019] [Accepted: 05/23/2019] [Indexed: 02/07/2023] Open
Abstract
Aronia melanocarpa are a rich source of anthocyanins that have received considerable interest for their relations to human health. In this study, the anti-adipogenic effect of cyanidin-3-O-galactoside-enriched Aronia melanocarpa extract (AM-Ex) and its underlying mechanisms were investigated in an in vivo system. Five-week-old male C57BL/6N mice were randomly divided into five groups for 8-week feeding with a control diet (CD), a high-fat diet (HFD), or a HFD with 50 (AM-Ex 50), 100 (AM-Ex 100), or 200 AM-Ex (AM-Ex 200) mg/kg body weight/day. HFD-fed mice showed a significant increase in body weight compared to the CD group, and AM-Ex dose-dependently inhibited this weight gain. AM-Ex significantly reduced the food intake and the weight of white fat tissue, including epididymal fat, retroperitoneal fat, mesenteric fat, and inguinal fat. Treatment with AM-Ex (50 to 200 mg/kg) reduced serum levels of leptin, insulin, triglyceride, total cholesterol, and low density lipoprotein (LDL)-cholesterol. Real-time reverse transcription-polymerase chain reaction (RT-PCR) analysis revealed that AM-Ex suppressed adipogenesis by decreasing CCAAT/enhancer binding protein α, peroxisome proliferator-activated receptor γ, sterol regulatory element-binding protein-1c, peroxisome proliferator-activated receptor gamma coactivator-1α, acetyl-CoA carboxylase 1, ATP-citrate lyase, fatty acid synthase, and adipocyte protein 2 messenger RNA (mRNA) expressions. These results suggest that AM-Ex is potentially beneficial for the suppression of HFD-induced obesity by modulating multiple pathways associated with adipogenesis and food intake.
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Affiliation(s)
- Su-Min Lim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Gangwon 24252, Korea.
| | - Hyun Sook Lee
- Department of Food Science & Nutrition, Dongseo University, Busan 47011, Korea.
| | - Jae In Jung
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Gangwon 24252, Korea.
| | - So Mi Kim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Gangwon 24252, Korea.
| | - Nam Young Kim
- R&D center, Wellfine Co., Ltd, Chuncheon, Gangwon 24232, Korea.
| | - Tae Su Seo
- R&D center, Wellfine Co., Ltd, Chuncheon, Gangwon 24232, Korea.
| | - Jung-Shik Bae
- R&D center, Wellfine Co., Ltd, Chuncheon, Gangwon 24232, Korea.
| | - Eun Ji Kim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Gangwon 24252, Korea.
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Fayaz E, Damirchi A, Zebardast N, Babaei P. Cinnamon extract combined with high-intensity endurance training alleviates metabolic syndrome via non-canonical WNT signaling. Nutrition 2019; 65:173-178. [PMID: 31170681 DOI: 10.1016/j.nut.2019.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/29/2019] [Accepted: 03/20/2019] [Indexed: 12/27/2022]
Abstract
OBJECTIVES The incidence of metabolic syndrome (MetS) in menopausal women is one of the main health care concerns. MetS clusters are related to an imbalance in pro- and anti-inflammatory adipokines such as secreted frizzled-related protein 5 (SFRP5) and wingless-type mammary tumor virus integration site family, member 5A (WNT5A). WNT5A induces an inflammatory state to induce insulin resistance and further pathologic consequences. Recent strategies to prevent progression of MetS to diabetes have focused on conservative treatments such as exercise and herbal medicine. The aim of this study was to investigate the mechanistic effects of cotreatment with cinnamon extract and 12-wk high-intensity endurance training on MetS components considering the non-canonical WNT5A signaling. METHOD Thirty-two female ovariectomized Wistar rats were divided into the following four groups (n = 8/group): exercise (Ova+Exe), cinnamon extract (Ova+Cin), exercise with cinnamon extract (Ova+Exe+Cin) and saline (Ova+Sal). One group of rats undergoing surgery without removal of the ovaries was considered as a sham. After 3 mo of experimental intervention, waist circumference, serum concentrations of glucose, insulin, lipid profile, tumor necrosis factor-α, WNT5A, and SFRP5 were measured. RESULTS Data showed a significant reduction in serum glucose, low-density lipoprotein, homeostasis model assessment estimate of insulin resistance, and tumor necrosis factor-α, but an increase in SFRP5 level in Ova+Exe, Ova+Cin and Ova +Exe+Cin groups compared with Ova+Sal group (P < 0.05). Serum WNT5A significantly was reduced only in Ova+Exe+Cin group (P = 0.02). CONCLUSION The present study indicated that high-endurance training combined with aqueous cinnamon extract supplementation for 12 wk more efficiently alleviated insulin resistance and metabolic dysfunctions via reduction in noncanonical WNT signaling in ovariectomized rats.
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Affiliation(s)
- Elham Fayaz
- Department of Medical Physiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Arsalan Damirchi
- Department of Sports Physiology, Faculty of Physical Education and Sport Sciences, University of Guilan, Rasht, Iran
| | - Nozhat Zebardast
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Parvin Babaei
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Department of Medical Physiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
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Wang Y, Zhu J, Handberg A, Overvad K, Tjønneland A, Rimm EB, Jensen MK. Association between plasma CD36 levels and incident risk of coronary heart disease among Danish men and women. Atherosclerosis 2018; 277:163-168. [PMID: 30218892 DOI: 10.1016/j.atherosclerosis.2018.08.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 08/07/2018] [Accepted: 08/29/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND AND AIMS CD36 is a cholesterol receptor involved in the uptake of oxidized low-density lipoprotein cholesterol and development of atherosclerotic plaques. Cross-sectional studies have shown correlations between plasma CD36 and atherosclerosis but no prospective study has examined the association yet. We prospectively examined the association between plasma CD36 levels and risk of incident coronary heart disease (CHD) in a Danish population. METHODS Plasma CD36 levels were measured in a case-cohort study nested within the Danish population-based cohort, the Diet, Cancer and Health Study. A total of 1963 incident CHD events occurred between baseline (1993-1997) and 2008, and a sub-cohort of 1759 participants were randomly selected as reference. Cox proportional hazard regression models were used to compute the hazard ratio (HR) and corresponding 95% confidence interval (CI). RESULTS After adjusting for CHD risk factors, including history of hypercholesterolemia and diabetes, elevated plasma CD36 levels were not associated with higher CHD risk in the total population, and the HR comparing the highest versus lowest tertile of CD36 levels was 1.02 (95% CI: 0.84-1.23). High CD36 levels were only found to be associated with risk of CHD in combination with prevalent diabetes (HR = 2.83, 95% CI: 1.08-7.45) vs. the joint reference group of lowest CD36 tertile and no diabetes. CONCLUSIONS Plasma CD36 levels were not predictive of CHD risk in the general population.
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Affiliation(s)
- Yeli Wang
- Health Services and Systems Research, Duke-NUS Medical School, 169857, Singapore
| | - Jingwen Zhu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Aase Handberg
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, 9100, Denmark; Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, 9100, Denmark
| | - Kim Overvad
- Department of Cardiology, Aalborg University Hospital, Aalborg, 9100, Denmark; Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, 8000, Denmark
| | - Anne Tjønneland
- Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Eric B Rimm
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Majken K Jensen
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
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Shakeel M, Jabeen F, Iqbal R, Chaudhry AS, Zafar S, Ali M, Khan MS, Khalid A, Shabbir S, Asghar MS. Assessment of Titanium Dioxide Nanoparticles (TiO 2-NPs) Induced Hepatotoxicity and Ameliorative Effects of Cinnamomum cassia in Sprague-Dawley Rats. Biol Trace Elem Res 2018; 182:57-69. [PMID: 28631137 DOI: 10.1007/s12011-017-1074-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022]
Abstract
This study assessed the protective effects of Cinnamomum cassia (cinnamon) bark extract in rats exposed to titanium dioxide nanoparticles or titanium dioxide bulk salt. For in vivo evaluation of the ameliorative role of the cinnamon extract, the experimental groups were orally administered with the cinnamon extract at different dose levels (50 or 100 or 150 mg/kg bodyweight) along with the subcutaneous injections of 150 mg/kg bodyweight titanium dioxide nanoparticles or titanium dioxide bulk salt. The extract showed significant ameliorative role on the antioxidant system in response to elevated levels of titanium dioxide nanoparticles or titanium dioxide bulk salt-induced oxidative stress. It aided in the recovery of the antioxidant system as well as protective role in histological damages and some haematological parameters in the rat liver treated with titanium dioxide nanoparticles or titanium dioxide bulk salt.
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Affiliation(s)
- Muhammad Shakeel
- Department of Zoology, Government College University, Faisalabad, Pakistan
| | - Farhat Jabeen
- Department of Zoology, Government College University, Faisalabad, Pakistan.
| | - Rehana Iqbal
- Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan
| | - Abdul Shakoor Chaudhry
- School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, UK
| | - Sadia Zafar
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Muhammad Ali
- Department of Zoology, Government College University, Faisalabad, Pakistan
| | | | - Adeel Khalid
- Department of Zoology, Government College University, Faisalabad, Pakistan
| | - Samina Shabbir
- Department of Zoology, Government College University, Faisalabad, Pakistan
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Borzoei A, Rafraf M, Niromanesh S, Farzadi L, Narimani F, Doostan F. Effects of cinnamon supplementation on antioxidant status and serum lipids in women with polycystic ovary syndrome. J Tradit Complement Med 2017; 8:128-133. [PMID: 29322000 PMCID: PMC5755995 DOI: 10.1016/j.jtcme.2017.04.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 04/24/2017] [Accepted: 04/24/2017] [Indexed: 12/19/2022] Open
Abstract
Background The objectives of study were to investigate the effects of cinnamon supplementation on antioxidant status and serum lipids in women with polycystic ovary syndrome (PCOS). Methods This double-blind randomized controlled clinical trial was conducted on 84 overweight or obese PCOS patients; aged 20–38 years. Subjects in cinnamon (n = 42) and placebo (n = 42) groups were given 3 cinnamon capsules (each one contained 500 mg cinnamon) or placebo daily for 8 weeks. Fasting blood samples, anthropometric measurements and dietary intake data were gathered at the beginning and at the end of the study. Independent t test, paired t test and analysis of covariance were used to analyze of data. Results Cinnamon significantly increased serum total antioxidant capacity (P = 0.005). Malondialdehyde was significantly decreased compared with placebo (P = 0.014). Cinnamon supplementation significantly improved serum level of total cholesterol, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol (all P < 0.05). No significant effect was detected on serum triglyceride level. Conclusions Cinnamon supplementation improved antioxidant status and serum lipid profile in women with PCOS and may be applicable for reducing PCOS risk factors.
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Affiliation(s)
- Azam Borzoei
- Students' Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Rafraf
- Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Niromanesh
- Mohheb Yas Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Laya Farzadi
- Women Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fateme Narimani
- Students Research Committee, Faculty of Nursing and Midwifery, Tehran University of Medical Science, Tehran, Iran
| | - Farideh Doostan
- Physiology Center Research, Kerman University of Medical Sciences, Kerman, Iran
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Cinnamon Polyphenol Extract Inhibits Hyperlipidemia and Inflammation by Modulation of Transcription Factors in High-Fat Diet-Fed Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:1583098. [PMID: 28396714 PMCID: PMC5370473 DOI: 10.1155/2017/1583098] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 02/26/2017] [Indexed: 12/11/2022]
Abstract
We evaluated the effects of cinnamon polyphenol extract on hepatic transcription factors expressions including SREBP-1c and LXR-α in rats fed high fat diet (HFD). Twenty-eight Wistar rats were allocated into four groups: (i) normal control: animals fed with normal chow; (ii) cinnamon: animals supplemented with cinnamon polyphenol; (iii) HFD: animals fed a high-fat diet; and (iv) HFD + cinnamon: animals fed a high-fat diet and treated with cinnamon polyphenol. Obesity was linked to hyperglycemia, hyperlipidemia, and oxidative stress as imitated by elevated serum glucose, lipid profile, and serum and liver malondialdehyde (MDA) concentrations. Cinnamon polyphenol decreased body weight, visceral fat, liver weight and serum glucose and insulin concentrations, liver antioxidant enzymes, and lipid profile (P < 0.05) and reduced serum and liver MDA concentration compared to HFD rats (P < 0.05). Cinnamon polyphenol also suppressed the hepatic SREBP-1c, LXR-α, ACLY, FAS, and NF-κB p65 expressions and enhanced the PPAR-α, IRS-1, Nrf2, and HO-1 expressions in the HFD rat livers (P < 0.05). In conclusion, cinnamon polyphenol reduces the hyperlipidemia, inflammation, and oxidative stress through activating transcription factors and antioxidative defense signaling pathway in HFD rat liver.
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Gaique TG, Lopes BP, Souza LL, Paula GSM, Pazos-Moura CC, Oliveira KJ. Cinnamon intake reduces serum T3 level and modulates tissue-specific expression of thyroid hormone receptor and target genes in rats. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:2889-2895. [PMID: 26374392 DOI: 10.1002/jsfa.7460] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 09/08/2015] [Accepted: 09/12/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Cinnamon has several effects on energy metabolism. However, no data exist on the impact of cinnamon intake on thyroid hormone serum concentrations and action, since thyroid hormones (THs) play a major role in metabolism. RESULTS Male rats were treated with cinnamon water extract (400 mg kg(-1) body weight, 25 days). Cinnamon supplementation resulted in a lower serum total T3 level accompanied by normal serum T4 and TSH levels. The cinnamon-treated rats did not exhibit significant differences in TSHβ subunit, TRβ or deiodinase type 2 mRNA expression in the pituitary. In the liver, cinnamon did not change the TRβ protein expression or the deiodinase type 1 mRNA expression, suggesting that there were no changes in T3 signaling or metabolism in this organ. However, mitochondrial GPDH, a target gene for T3 in the liver, exhibited no changes in mRNA expression, although its activity level was reduced by cinnamon. In the cardiac ventricle, T3 action was markedly reduced by cinnamon, as demonstrated by the lower TRα mRNA and protein levels, reduced SERCA2a and RyR2 and increased phospholamban mRNA expression. CONCLUSION This study has revealed that TH action is a novel target of cinnamon, demonstrating impairment of T3 signaling in the cardiac ventricles. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Thaiane G Gaique
- Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, 24210-130, RJ, Brazil
| | - Bruna P Lopes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 21949-900, RJ, Brazil
| | - Luana L Souza
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 21949-900, RJ, Brazil
| | - Gabriela S M Paula
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 21949-900, RJ, Brazil
| | - Carmen C Pazos-Moura
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 21949-900, RJ, Brazil
| | - Karen J Oliveira
- Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, 24210-130, RJ, Brazil
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Liu Y, Li X, Xie C, Luo X, Bao Y, Wu B, Hu Y, Zhong Z, Liu C, Li M. Prevention Effects and Possible Molecular Mechanism of Mulberry Leaf Extract and its Formulation on Rats with Insulin-Insensitivity. PLoS One 2016; 11:e0152728. [PMID: 27054886 PMCID: PMC4824359 DOI: 10.1371/journal.pone.0152728] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 03/18/2016] [Indexed: 11/24/2022] Open
Abstract
For centuries, mulberry leaf has been used in traditional Chinese medicine for the treatment of diabetes. This study aims to test the prevention effects of a proprietary mulberry leaf extract (MLE) and a formula consisting of MLE, fenugreek seed extract, and cinnamon cassia extract (MLEF) on insulin resistance development in animals. MLE was refined to contain 5% 1-deoxynojirimycin by weight. MLEF was formulated by mixing MLE with cinnamon cassia extract and fenugreek seed extract at a 6:5:3 ratio (by weight). First, the acute toxicity effects of MLE on ICR mice were examined at 5 g/kg BW dose. Second, two groups of normal rats were administrated with water or 150 mg/kg BW MLE per day for 29 days to evaluate MLE’s effect on normal animals. Third, to examine the effects of MLE and MLEF on model animals, sixty SD rats were divided into five groups, namely, (1) normal, (2) model, (3) high-dose MLE (75 mg/kg BW) treatment; (4) low-dose MLE (15 mg/kg BW) treatment; and (5) MLEF (35 mg/kg BW) treatment. On the second week, rats in groups (2)-(5) were switched to high-energy diet for three weeks. Afterward, the rats were injected (ip) with a single dose of 105 mg/kg BW alloxan. After four more days, fasting blood glucose, post-prandial blood glucose, serum insulin, cholesterol, and triglyceride levels were measured. Last, liver lysates from animals were screened with 650 antibodies for changes in the expression or phosphorylation levels of signaling proteins. The results were further validated by Western blot analysis. We found that the maximum tolerance dose of MLE was greater than 5 g/kg in mice. The MLE at a 150 mg/kg BW dose showed no effect on fast blood glucose levels in normal rats. The MLE at a 75 mg/kg BW dose and MLEF at a 35 mg/kg BW dose, significantly (p < 0.05) reduced fast blood glucose levels in rats with impaired glucose and lipid metabolism. In total, 34 proteins with significant changes in expression and phosphorylation levels were identified. The changes of JNK, IRS1, and PDK1 were confirmed by western blot analysis. In conclusion, this study demonstrated the potential protective effects of MLE and MLEF against hyperglycemia induced by high-energy diet and toxic chemicals in rats for the first time. The most likely mechanism is the promotion of IRS1 phosphorylation, which leads to insulin sensitivity restoration.
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Affiliation(s)
- Yan Liu
- Research and Development Center of Amway (China), Shanghai, China
| | - Xuemei Li
- Beijing Institute for Drug Control (Beijing Center For Health Food And Cosmetics Control), Beijing, China
| | - Chen Xie
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, 151 Malianwa North Road, Haidian District, Beijing 100193, China
| | - Xiuzhen Luo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, 151 Malianwa North Road, Haidian District, Beijing 100193, China
| | | | - Bin Wu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, 151 Malianwa North Road, Haidian District, Beijing 100193, China
| | - Yuchi Hu
- Beijing Institute for Drug Control (Beijing Center For Health Food And Cosmetics Control), Beijing, China
| | - Zhong Zhong
- Botanic Century (Beijing) Co., Ltd, Beijing, China
| | - Chang Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, 151 Malianwa North Road, Haidian District, Beijing 100193, China
- * E-mail: (CL); (MJL)
| | - MinJie Li
- Research and Development Center of Amway (China), Shanghai, China
- * E-mail: (CL); (MJL)
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Fructose-enriched diet induces inflammation and reduces antioxidative defense in visceral adipose tissue of young female rats. Eur J Nutr 2015; 56:151-160. [PMID: 26433940 DOI: 10.1007/s00394-015-1065-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 09/25/2015] [Indexed: 01/01/2023]
Abstract
PURPOSE The consumption of refined, fructose-enriched food continuously increases and has been linked to development of obesity, especially in young population. Low-grade inflammation and increased oxidative stress have been implicated in the pathogenesis of obesity-related disorders including type 2 diabetes. In this study, we examined alterations in inflammation and antioxidative defense system in the visceral adipose tissue (VAT) of fructose-fed young female rats, and related them to changes in adiposity and insulin sensitivity. METHODS We examined the effects of 9-week fructose-enriched diet applied immediately after weaning on nuclear factor κB (NF-κB) intracellular distribution, and on the expression of pro-inflammatory cytokines (IL-1β and TNFα) and key antioxidative enzymes in the VAT of female rats. Insulin signaling in the VAT was evaluated at the level of insulin receptor substrate-1 (IRS-1) protein and its inhibitory phosphorylation on Ser307. RESULTS Fructose-fed rats had increased VAT mass along with increased NF-κB nuclear accumulation and elevated IL-1β, but not TNFα expression. The protein levels of antioxidative defense enzymes, mitochondrial manganese superoxide dismutase 2, and glutathione peroxidase, were reduced, while the protein content of IRS-1 and its inhibitory phosphorylation were not altered by fructose diet. CONCLUSIONS The results suggest that fructose overconsumption-related alterations in pro-inflammatory markers and antioxidative capacity in the VAT of young female rats can be implicated in the development of adiposity, but do not affect inhibitory phosphorylation of IRS-1.
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Barroso E, Rodríguez-Rodríguez R, Chacón MR, Maymó-Masip E, Ferrer L, Salvadó L, Salmerón E, Wabistch M, Palomer X, Vendrell J, Wahli W, Vázquez-Carrera M. PPARβ/δ ameliorates fructose-induced insulin resistance in adipocytes by preventing Nrf2 activation. Biochim Biophys Acta Mol Basis Dis 2015; 1852:1049-58. [DOI: 10.1016/j.bbadis.2015.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/13/2015] [Accepted: 02/21/2015] [Indexed: 10/23/2022]
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Cottrell JJ, Liu F, Hung AT, DiGiacomo K, Chauhan SS, Leury BJ, Furness JB, Celi P, Dunshea FR. Nutritional strategies to alleviate heat stress in pigs. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an15255] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pigs are comparatively less heat tolerant than other species of production animals, which poses challenges for stock productivity and management during seasonal heat waves that occur in summer. The issues surrounding heat and pig production are predicted to increase, based on the actions of climate change increasing the intensity, frequency and duration of heat waves. Furthermore, future growth areas of pig production are going to be in tropical regions such as South-east Asia and Latin America. Efforts by the pig to dissipate excess body heat come at a cost to health and divert energy away from growth, compromising efficient pig production. Management of heat stress requires multiple strategies, and recent research is improving the understanding of the application of nutritional strategies to ameliorate the effects of heat stress. In particular the use of feed additives is an important, flexible and economical method to alleviate heat stress and the intensive nature of pig production lends itself to the use of additives. Some specific examples include antioxidants, betaine and chromium, which have been proved effective or being tested in mitigating some certain impacts of heat stress in pigs. The aim of this review is to summarise recent advances in the nutritional management of heat stress in pigs.
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Lopes BP, Gaique TG, Souza LL, Paula GSM, Kluck GEG, Atella GC, Gomes ACC, Simas NK, Kuster RM, Ortiga-Carvalho TM, Pazos-Moura CC, Oliveira KJ. Cinnamon extract improves the body composition and attenuates lipogenic processes in the liver and adipose tissue of rats. Food Funct 2015; 6:3257-65. [DOI: 10.1039/c5fo00569h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cinnamon attenuates lipogenic processes, regulating the expression of key enzymes, transcriptional factors and their target genes in the liver and adipose tissue.
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Gogoi B, Kakoti BB, Borah S, Borah NS. Antihyperglycemic and in vivo antioxidative activity evaluation of Cinnamomum bejolghota (Buch.-Ham.) in streptozotocin induced diabetic rats: an ethnomedicinal plant in Assam. ASIAN PAC J TROP MED 2014; 7S1:S427-34. [DOI: 10.1016/s1995-7645(14)60270-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/18/2014] [Accepted: 09/17/2014] [Indexed: 11/29/2022] Open
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25
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Enhanced anti-diabetic activity of polyphenol-rich de-coumarinated extracts of Cinnamomum cassia. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.05.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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26
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Anderson RA, Qin B, Canini F, Poulet L, Roussel AM. Cinnamon counteracts the negative effects of a high fat/high fructose diet on behavior, brain insulin signaling and Alzheimer-associated changes. PLoS One 2013; 8:e83243. [PMID: 24349472 PMCID: PMC3862724 DOI: 10.1371/journal.pone.0083243] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 10/22/2013] [Indexed: 11/18/2022] Open
Abstract
Insulin resistance leads to memory impairment. Cinnamon (CN) improves peripheral insulin resistance but its effects in the brain are not known. Changes in behavior, insulin signaling and Alzheimer-associated mRNA expression in the brain were measured in male Wistar rats fed a high fat/high fructose (HF/HFr) diet to induce insulin resistance, with or without CN, for 12 weeks. There was a decrease in insulin sensitivity associated with the HF/HFr diet that was reversed by CN. The CN fed rats were more active in a Y maze test than rats fed the control and HF/HFr diets. The HF/HFr diet fed rats showed greater anxiety in an elevated plus maze test that was lessened by feeding CN. The HF/HFr diet also led to a down regulation of the mRNA coding for GLUT1 and GLUT3 that was reversed by CN in the hippocampus and cortex. There were increases in Insr, Irs1 and Irs2 mRNA in the hippocampus and cortex due to the HF/HFr diet that were not reversed by CN. Increased peripheral insulin sensitivity was also associated with increased glycogen synthase in both hippocampus and cortex in the control and HF/HFr diet animals fed CN. The HF/HFr diet induced increases in mRNA associated with Alzheimers including PTEN, Tau and amyloid precursor protein (App) were also alleviated by CN. In conclusion, these data suggest that the negative effects of a HF/HFr diet on behavior, brain insulin signaling and Alzheimer-associated changes were alleviated by CN suggesting that neuroprotective effects of CN are associated with improved whole body insulin sensitivity and related changes in the brain.
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Affiliation(s)
- Richard A. Anderson
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland, United States of America
- * E-mail:
| | - Bolin Qin
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland, United States of America
- Integrity Nutraceuticals International, Spring Hill, Tennessee, United States of America
| | - Frederic Canini
- Army Institute for Research in Biology, Grenoble, France
- Ecole du Val de Grâce, 1 place Laveran, Paris, France
| | - Laurent Poulet
- Army Institute for Research in Biology, Grenoble, France
- National Institute for Health, Joseph Fourier University, Grenoble, France
| | - Anne Marie Roussel
- National Institute for Health, Joseph Fourier University, Grenoble, France
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Effect of a high-fat--high-fructose diet, stress and cinnamon on central expression of genes related to immune system, hypothalamic-pituitary-adrenocortical axis function and cerebral plasticity in rats. Br J Nutr 2013; 111:1190-201. [PMID: 24252462 DOI: 10.1017/s0007114513003577] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The intake of a high-fat/high-fructose (HF/HFr) diet is described to be deleterious to cognitive performances, possibly via the induction of inflammatory factors. An excess of glucocorticoids is also known to exert negative effects on cerebral plasticity. In the present study, we assessed the effects of an unbalanced diet on circulating and central markers of inflammation and glucocorticoid activity, as well as their reversal by dietary cinnamon (CN) supplementation. A group of male Wistar rats were subjected to an immune challenge with acute lipopolysaccharide under a HF/HFr or a standard diet. Another group of Wistar rats were fed either a HF/HFr or a control diet for 12 weeks, with or without CN supplementation, and with or without restraint stress (Str) application before being killed. We evaluated the effects of such regimens on inflammation parameters in the periphery and brain and on the expression of actors of brain plasticity. To assess hypothalamic-pituitary-adrenocortical axis activity, we measured the plasma concentrations of corticosterone and the expression of central corticotrophin-releasing hormone, mineralocorticoid receptor, glucocorticoid receptor and 11β-hydroxysteroid dehydrogenase. We found that the HF/HFr diet induced the expression of cytokines in the brain, but only after an immune challenge. Furthermore, we observed the negative effects of Str on the plasma concentrations of corticosterone and neuroplasticity markers in rats fed the control diet but not in those fed the HF/HFr diet. Additionally, we found that CN supplementation exerted beneficial effects under the control diet, but that its effects were blunted or even reversed under the HF/HFr diet. CN supplementation could be beneficial under a standard diet. [corrected].
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Abstract
In this study, we examined whether melatonin improves metabolic syndrome induced by high fructose intake in male Wistar rats. Feeding of a diet containing 60% fructose (HFD) for 4 or 6 wk caused increased serum insulin, triglyceride, total cholesterol, free fatty acids, uric acid, leptin, and lipid peroxide concentrations as well as hepatic triglyceride and cholesterol concentrations, and relative intra-abdominal fat and liver weights. The 4- or 6-wk HFD feeding reduced serum high-density lipoprotein cholesterol and adiponectin concentrations. The 6-wk HFD feeding increased serum tumor necrosis factor-α concentration and hepatic lipid peroxide concentration and lowered hepatic reduced glutathione concentration. Daily intraperitoneal administration of melatonin (1 or 10mg/kg body weight), starting at 4-wk HFD feeding, attenuated these changes at 6-wk HFD feeding more effectively at its higher dose than at its lower dose. In an oral glucose tolerance test, rats with 4- or 6-wk HFD feeding showed higher serum insulin response curve and normal serum glucose response curve when compared with the corresponding animals that received the control diet. The 4- or 6-wk HFD feeding caused insulin resistance, judging from the scores of HOMR-IR and QUICKI, which are indices of insulin resistance. The daily administered melatonin (1 or 10mg/kg body weight) ameliorated the higher serum insulin response curve in the oral glucose tolerance test and insulin resistance at 6-wk HFD feeding more effectively at its higher dose than at its lower dose. These results indicate that melatonin improves metabolic syndrome induced by high fructose intake in rats.
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Affiliation(s)
- Akira Kitagawa
- Department of Nutrition, Faculty of Wellness, Shigakkan University, Ohbu, Japan
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de Oliveira C, de Mattos ABM, Silva CBR, Mota JF, Zemdegs JCS. Nutritional and hormonal modulation of adiponectin and its receptors adipoR1 and adipoR2. VITAMINS AND HORMONES 2012; 90:57-94. [PMID: 23017712 DOI: 10.1016/b978-0-12-398313-8.00003-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adiponectin is the most abundant plasma protein synthesized mostly by adipose tissue and is an insulin-sensitive hormone, playing a central role in glucose and lipid metabolism. Adiponectin effects are mediated via two receptors, adipoR1 and adipoR2. Several hormones and diet components that are involved in insulin resistance may impair insulin sensitivity at least in part by decreasing adiponectin and adiponectin receptors. Adiponectin expression and serum levels are associated with the amount and type of fatty acids and carbohydrate consumed. Other food items, such as vitamins, alcohol, sodium, green tea, and coffee, have been reported to modify adiponectin levels. Several hormones, including testosterone, estrogen, prolactin, glucocorticoids, catecholamines, and growth hormone, have been shown to inhibit adiponectin production, but the studies are still controversial. Even so, adiponectin is a potential therapeutic target in the treatment of diabetes mellitus and other diseases associated with hypoadiponectinemia.
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Affiliation(s)
- Cristiane de Oliveira
- Systemic Inflammation Laboratory, Trauma Research, St. Joseph's Hospital and Medical Center, Phoenix, USA.
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An extract of chokeberry attenuates weight gain and modulates insulin, adipogenic and inflammatory signalling pathways in epididymal adipose tissue of rats fed a fructose-rich diet. Br J Nutr 2011; 108:581-7. [DOI: 10.1017/s000711451100599x] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chokeberries are a rich source of anthocyanins, which may contribute to the prevention of obesity and the metabolic syndrome. The aim of the present study was to determine if an extract from chokeberries would reduce weight gain in rats fed a fructose-rich diet (FRD) and to explore the potential mechanisms related to insulin signalling, adipogenesis and inflammatory-related pathways. Wistar rats were fed a FRD for 6 weeks to induce insulin resistance, with or without chokeberry extract (CBE) added to the drinking-water (100 and 200 mg/kg body weight, daily: CBE100 and CBE200). Both doses of CBE consumption lowered epididymal fat, blood glucose, TAG, cholesterol and LDL-cholesterol. CBE consumption also elevated plasma adiponectin levels and inhibited plasma TNF-α and IL6, compared with the control group. There were increases in the mRNA expression for Irs1, Irs2, Pi3k, Glut1, Glut4 and Gys1, and decreases in mRNA levels of Gsk3β. The protein and gene expression of adiponectin and Pparγ mRNA levels were up-regulated and Fabp4, Fas and Lpl mRNA levels were inhibited. The levels of gene expression of inflammatory cytokines, such as Il1β, Il6 and Tnfα were lowered, and protein and gene expression of ZFP36 (zinc finger protein) were enhanced in the epididymal adipose tissue of the rats that consumed the CBE200 extract. In summary, these results suggest that the CBE decreased risk factors related to insulin resistance by modulating multiple pathways associated with insulin signalling, adipogenesis and inflammation.
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31
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Couturier K, Qin B, Batandier C, Awada M, Hininger-Favier I, Canini F, Leverve X, Roussel AM, Anderson RA. Cinnamon increases liver glycogen in an animal model of insulin resistance. Metabolism 2011; 60:1590-7. [PMID: 21550075 DOI: 10.1016/j.metabol.2011.03.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/15/2022]
Abstract
The objective of this study was to determine the effects of cinnamon on glycogen synthesis, related gene expression, and protein levels in the muscle and liver using an animal model of insulin resistance, the high-fat/high-fructose (HF/HFr) diet-fed rat. Four groups of 22 male Wistar rats were fed for 12 weeks with (1) HF/HFr diet to induce insulin resistance, (2) HF/HFr diet containing 20 g cinnamon per kilogram of diet, (3) control diet, and (4) control diet containing 20 g cinnamon per kilogram of diet. In the liver, cinnamon added to the HF/HFr diet led to highly significant increases of liver glycogen. There were no significant changes in animals consuming the control diet plus cinnamon. In the liver, cinnamon also counteracted the decreases of the gene expressions due to the consumption of the HF/HFr diet for the insulin receptor, insulin receptor substrates 1 and 2, glucose transporters 1 and 2, and glycogen synthase 1. In muscle, the decreased expressions of these genes by the HF/HFr diet and glucose transporter 4 were also reversed by cinnamon. In addition, the overexpression of glycogen synthase 3β messenger RNA levels and protein observed in the muscle of HF/HFr fed rats was decreased in animals consuming cinnamon. These data demonstrate that, in insulin-resistant rats, cinnamon improves insulin sensitivity and enhances liver glycogen via regulating insulin signaling and glycogen synthesis. Changes due to cinnamon in control animals with normal insulin sensitivity were not significant.
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Bandara T, Uluwaduge I, Jansz ER. Bioactivity of cinnamon with special emphasis on diabetes mellitus: a review. Int J Food Sci Nutr 2011; 63:380-6. [PMID: 22007625 DOI: 10.3109/09637486.2011.627849] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Cinnamon is the oldest spice and has been used by several cultural practices for centuries. In addition to its culinary uses, cinnamon possesses a rising popularity due to many stated health benefits. Out of the large number of cinnamon species available, Cinnamomum aromaticum (Cassia) and Cinnamomum zeylanicum have been subjected to extensive research. Available in vitro and in vivo evidence indicates that cinnamon may have multiple health benefits, mainly in relation to hypoglycaemic activity. Furthermore, the therapeutic potential of cinnamon is stated also to be brought about by its anti-microbial, anti-fungal, antiviral, antioxidant, anti-tumour, blood pressure-lowering, cholesterol and lipid-lowering and gastro-protective properties. This article provides a summary of the scientific literature available on both C. aromaticum and C. zeylanicum. All studies reported here have used cinnamon bark and its products. Although almost all the animal models have indicated a pronounced anti-diabetic activity of both cinnamon species, conflicting results were observed with regard to the few clinical trials available. Therefore, the necessity of evaluating the effects of cinnamon for its therapeutic potential through well-defined and adequately powered randomized controlled clinical trials is emphasized, before recommendations are made for the use of cinnamon as an effective treatment for humans.
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Affiliation(s)
- Thushari Bandara
- Allied Health Sciences Degree Programme, Faculty of Medicine, University of Ruhuna, Galle, Sri Lanka.
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33
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Grape seed extract supplementation prevents high-fructose diet-induced insulin resistance in rats by improving insulin and adiponectin signalling pathways. Br J Nutr 2011; 106:1173-81. [PMID: 21736810 DOI: 10.1017/s0007114511001589] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Recent evidence strongly supports the contention that grape seed extract (GSE) improves hyperglycaemia and hyperinsulinaemia in high-fructose-fed rats. To explore the underlying molecular mechanisms of action, we examined the effects of GSE on the expression of muscle proteins related to the insulin signalling pathway and of mRNA for genes involved in the adiponectin signalling pathway. Compared with rats fed on a normal diet, high-fructose-fed rats developed pathological changes, including insulin resistance, hyperinsulinaemia, hypertriacylglycerolaemia, a low level of plasma adiponectin and a high level of plasma fructosamine. These disorders were effectively attenuated in high-fructose-fed rats supplemented with GSE. A high-fructose diet causes insulin resistance by significantly reducing the protein expression of insulin receptor, insulin receptor substrate-1, Akt and GLUT4, and the mRNA expression of adiponectin, adiponectin receptor R1 (AdipoR1) and AMP-activated protein kinase (AMPK)-α in the skeletal muscle. Supplementation of GSE enhanced the expression of insulin signalling pathway-related proteins, including Akt and GLUT4. GSE also increased the mRNA expression of adiponectin, AdipoR1 and AMPK-α. In addition, GSE increased the mRNA levels of glycogen synthase and suppressed the mRNA expression of glycogen synthase kinase-3-α, causing an increase in glycogen accumulation in the skeletal muscle. These results suggest that GSE ameliorates the defective insulin and adiponectin signalling pathways in the skeletal muscle, resulting in improved insulin resistance in fructose-fed rats.
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Koonen DPY, Jensen MK, Handberg A. Soluble CD36- a marker of the (pathophysiological) role of CD36 in the metabolic syndrome? Arch Physiol Biochem 2011; 117:57-63. [PMID: 21250778 DOI: 10.3109/13813455.2010.543136] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CD36 is a class B scavenger receptor observed in many cell types and tissues throughout the body. Recent literature has implicated CD36 in the pathogenesis of metabolic dysregulation such as found in obesity, insulin resistance, and atherosclerosis. Genetic variation at the CD36 loci have been associated with obesity and lipid components of the metabolic syndrome, with risk of heart disease and type 2 diabetes. Recently, non-cell bound CD36 was identified in human plasma and was termed soluble CD36 (sCD36). In this review we will describe the functions of CD36 in tissues and address the role of sCD36 in the context of the metabolic syndrome. We will also highlight recent findings from human genetic studies looking at the CD36 locus in relation to metabolic profile in the general population. Finally, we present a model in which insulin resistance, oxLDL, low-grade inflammation and liver steatosis may contribute to elevated levels of sCD36.
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Affiliation(s)
- Debby P Y Koonen
- Molecular Genetics, Department of Pathology and Medical Biology, University Medical Center Groningen, The Netherlands
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35
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Davis PA, Yokoyama W. Cinnamon intake lowers fasting blood glucose: meta-analysis. J Med Food 2011; 14:884-9. [PMID: 21480806 DOI: 10.1089/jmf.2010.0180] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Cinnamon, the dry bark and twig of Cinnamomum spp., is a rich botanical source of polyphenolics that has been used for centuries in Chinese medicine and has been shown to affect blood glucose and insulin signaling. Cinnamon's effects on blood glucose have been the subject of many clinical and animal studies; however, the issue of cinnamon intake's effect on fasting blood glucose (FBG) in people with type 2 diabetes and/or prediabetes still remains unclear. A meta-analysis of clinical studies of the effect of cinnamon intake on people with type 2 diabetes and/or prediabetes that included three new clinical trials along with five trials used in previous meta-analyses was done to assess cinnamon's effectiveness in lowering FBG. The eight clinical studies were identified using a literature search (Pub Med and Biosis through May 2010) of randomized, placebo-controlled trials reporting data on cinnamon and/or cinnamon extract and FBG. Comprehensive Meta-Analysis (Biostat Inc., Englewood, NJ, USA) was performed on the identified data for both cinnamon and cinnamon extract intake using a random-effects model that determined the standardized mean difference ([i.e., Change 1(control) - Change 2(cinnamon)] divided by the pooled SD of the post scores). Cinnamon intake, either as whole cinnamon or as cinnamon extract, results in a statistically significant lowering in FBG (-0.49±0.2 mmol/L; n=8, P=.025) and intake of cinnamon extract only also lowered FBG (-0.48 mmol/L±0.17; n=5, P=.008). Thus cinnamon extract and/or cinnamon improves FBG in people with type 2 diabetes or prediabetes.
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Affiliation(s)
- Paul A Davis
- Department of Nutrition, University of California-Davis, Davis, California 95616, USA.
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36
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Qin B, Panickar KS, Anderson RA. Cinnamon: potential role in the prevention of insulin resistance, metabolic syndrome, and type 2 diabetes. J Diabetes Sci Technol 2010; 4:685-93. [PMID: 20513336 PMCID: PMC2901047 DOI: 10.1177/193229681000400324] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Metabolic syndrome is associated with insulin resistance, elevated glucose and lipids, inflammation, decreased antioxidant activity, increased weight gain, and increased glycation of proteins. Cinnamon has been shown to improve all of these variables in in vitro, animal, and/or human studies. In addition, cinnamon has been shown to alleviate factors associated with Alzheimer's disease by blocking and reversing tau formation in vitro and in ischemic stroke by blocking cell swelling. In vitro studies also show that components of cinnamon control angiogenesis associated with the proliferation of cancer cells. Human studies involving control subjects and subjects with metabolic syndrome, type 2 diabetes mellitus, and polycystic ovary syndrome all show beneficial effects of whole cinnamon and/or aqueous extracts of cinnamon on glucose, insulin, insulin sensitivity, lipids, antioxidant status, blood pressure, lean body mass, and gastric emptying. However, not all studies have shown positive effects of cinnamon, and type and amount of cinnamon, as well as the type of subjects and drugs subjects are taking, are likely to affect the response to cinnamon. In summary, components of cinnamon may be important in the alleviation and prevention of the signs and symptoms of metabolic syndrome, type 2 diabetes, and cardiovascular and related diseases.
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Affiliation(s)
- Bolin Qin
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, United States Department of Agriculture, Agricultural Research ServiceBeltsville, Maryland
- Beltsville Human Nutrition Research Center, IntegritySpring Hill, Tennessee
| | - Kiran S. Panickar
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, United States Department of Agriculture, Agricultural Research ServiceBeltsville, Maryland
| | - Richard A. Anderson
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, United States Department of Agriculture, Agricultural Research ServiceBeltsville, Maryland
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Prasain JK, Carlson SH, Wyss JM. Flavonoids and age-related disease: risk, benefits and critical windows. Maturitas 2010; 66:163-71. [PMID: 20181448 DOI: 10.1016/j.maturitas.2010.01.010] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 01/15/2010] [Indexed: 02/07/2023]
Abstract
Plant derived products are consumed by a large percentage of the population to prevent, delay and ameliorate disease burden; however, relatively little is known about the efficacy, safety and underlying mechanisms of these traditional health products, especially when taken in concert with pharmaceutical agents. The flavonoids are a group of plant metabolites that are common in the diet and appear to provide some health benefits. While flavonoids are primarily derived from soy, many are found in fruits, nuts and more exotic sources, e.g., kudzu. Perhaps the strongest evidence for the benefits of flavonoids in diseases of aging relates to their effect on components of the metabolic syndrome. Flavonoids from soy, grape seed, kudzu and other sources all lower arterial pressure in hypertensive animal models and in a limited number of tests in humans. They also decrease the plasma concentration of lipids and buffer plasma glucose. The underlying mechanisms appear to include antioxidant actions, central nervous system effects, gut transport alterations, fatty acid sequestration and processing, PPAR activation and increases in insulin sensitivity. In animal models of disease, dietary flavonoids also demonstrate a protective effect against cognitive decline, cancer and metabolic disease. However, research also indicates that the flavonoids can be detrimental in some settings and, therefore, are not universally safe. Thus, as the population ages, it is important to determine the impact of these agents on prevention/attenuation of disease, including optimal exposure (intake, timing/duration) and potential contraindications.
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Affiliation(s)
- J K Prasain
- Department Pharmacology and Toxicology of the University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Yu YB, Dosanjh L, Lao L, Tan M, Shim BS, Luo Y. Cinnamomum cassia bark in two herbal formulas increases life span in Caenorhabditis elegans via insulin signaling and stress response pathways. PLoS One 2010; 5:e9339. [PMID: 20179756 PMCID: PMC2825258 DOI: 10.1371/journal.pone.0009339] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 01/26/2010] [Indexed: 11/20/2022] Open
Abstract
Background Proving the efficacy and corresponding mode of action of herbal supplements is a difficult challenge for evidence-based herbal therapy. A major hurdle is the complexity of herbal preparations, many of which combine multiple herbs, particularly when the combination is assumed to be vitally important to the effectiveness of the herbal therapy. This issue may be addressed through the use of contemporary methodology and validated animal models. Methods and Principal Findings In this study, two commonly used traditional herbal formulas, Shi Quan Da Bu Tang (SQDB) and Huo Luo Xiao Ling Dan (HLXL) were evaluated using a survival assay and oxidative stress biomarkers in a well-established C. elegans model of aging. HLXL is an eleven herb formula modified from a top-selling traditional herbal formula for the treatment of arthritic joint pain. SQDB consists of ten herbs often used for fatigue and energy, particularly in the aged. We demonstrate here that SQDB significantly extend life span in a C. elegans model of aging. Among all individual herbs tested, two herbs Cinnamomum cassia bark (Chinese pharmaceutical name: Cinnamomi Cortex, CIN) and Panax ginseng root (Chinese pharmaceutical name: Ginseng Radix, GS) significantly extended life span in C. elegans. CIN in both SQDB and HLXL formula extended life span via modulation of multiple longevity assurance genes, including genes involved in insulin signaling and stress response pathways. All the life-span-extending herbs (SQDB, CIN and GS) also attenuated levels of H2O2 and enhanced small heat shock protein expression. Furthermore, the life span-extending herbs significantly delayed human amyloid beta (Aβ)-induced toxicity in transgenic C. elegans expressing human Aβ. Conclusion/Significance These results validate an invertebrate model for rapid, systematic evaluation of commonly used Chinese herbal formulations and may provide insight for designing future evidence-based herbal therapy(s).
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Affiliation(s)
- Young-Beob Yu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland, United States of America
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