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Bhasin S, Seals D, Migaud M, Musi N, Baur JA. Nicotinamide Adenine Dinucleotide in Aging Biology: Potential Applications and Many Unknowns. Endocr Rev 2023; 44:1047-1073. [PMID: 37364580 DOI: 10.1210/endrev/bnad019] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/28/2023] [Accepted: 06/22/2023] [Indexed: 06/28/2023]
Abstract
Recent research has unveiled an expansive role of NAD+ in cellular energy generation, redox reactions, and as a substrate or cosubstrate in signaling pathways that regulate health span and aging. This review provides a critical appraisal of the clinical pharmacology and the preclinical and clinical evidence for therapeutic effects of NAD+ precursors for age-related conditions, with a particular focus on cardiometabolic disorders, and discusses gaps in current knowledge. NAD+ levels decrease throughout life; age-related decline in NAD+ bioavailability has been postulated to be a contributor to many age-related diseases. Raising NAD+ levels in model organisms by administration of NAD+ precursors improves glucose and lipid metabolism; attenuates diet-induced weight gain, diabetes, diabetic kidney disease, and hepatic steatosis; reduces endothelial dysfunction; protects heart from ischemic injury; improves left ventricular function in models of heart failure; attenuates cerebrovascular and neurodegenerative disorders; and increases health span. Early human studies show that NAD+ levels can be raised safely in blood and some tissues by oral NAD+ precursors and suggest benefit in preventing nonmelanotic skin cancer, modestly reducing blood pressure and improving lipid profile in older adults with obesity or overweight; preventing kidney injury in at-risk patients; and suppressing inflammation in Parkinson disease and SARS-CoV-2 infection. Clinical pharmacology, metabolism, and therapeutic mechanisms of NAD+ precursors remain incompletely understood. We suggest that these early findings provide the rationale for adequately powered randomized trials to evaluate the efficacy of NAD+ augmentation as a therapeutic strategy to prevent and treat metabolic disorders and age-related conditions.
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Affiliation(s)
- Shalender Bhasin
- Department of Medicine, Harvard Medical School, Research Program in Men's Health: Aging and Metabolism, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Douglas Seals
- Department of Integrative Physiology and Medicine, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Marie Migaud
- Department of Pharmacology, Mitchell Cancer Institute, College of Medicine, University of Southern Alabama, Mobile, AL 36688, USA
| | - Nicolas Musi
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Joseph A Baur
- Department of Physiology, Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Pîrvu AS, Andrei AM, Stănciulescu EC, Baniță IM, Pisoschi CG, Jurja S, Ciuluvica R. NAD + metabolism and retinal degeneration (Review). Exp Ther Med 2021; 22:670. [PMID: 33986835 PMCID: PMC8111861 DOI: 10.3892/etm.2021.10102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/16/2021] [Indexed: 12/22/2022] Open
Abstract
The recent years has revealed an intense interest in the study of nicotinamide adenine dinucleotide (NAD+), particularly in regards to its intermediates, such as nicotinamide and nicotinic acid known as niacin, and also nicotinamide riboside. Besides its participation as a coenzyme in the redox transformations of nutrients during catabolism, NAD+ is also involved in DNA repair and epigenetic modification of gene expression and also plays an essential role in calcium homeostasis. Clinical and experimental data emphasize the age-dependent decline in NAD+ levels and its relation with the onset and progression of various age-related diseases. Maintaining optimal levels of NAD+ has aroused a therapeutic interest in such pathological conditions; NAD+ being currently regarded as an important target to extend health and lifespan. Based on a systematic exploration of the experimental data and literature surrounding the topic, this paper reviews some of the recent research studies related to the roles of the pyridine nucleotide family focusing on biosynthesis, NAD+ deficiency-associated diseases, pathobiochemistry related to retinal degeneration and potential therapeutic effects on human vision as well.
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Affiliation(s)
- Andreea Silvia Pîrvu
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ana Marina Andrei
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Elena Camelia Stănciulescu
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ileana Monica Baniță
- Department of Histology, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Cătălina Gabriela Pisoschi
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Sanda Jurja
- Department of Ophthalmology, Faculty of Medicine, ‘Ovidius’ University of Constanta, 900527 Constanta, Romania
| | - Radu Ciuluvica
- Faculty of Dentistry, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
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Singh D, Singh AP, Singh D, Kesavan AK, Tiwary AK, Bedi N. Polymeric Precipitation Inhibitor–Based Solid Supersaturable SMEDD Formulation of Canagliflozin: Improved Bioavailability and Anti-diabetic Activity. J Pharm Innov 2021. [DOI: 10.1007/s12247-020-09445-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Singh D, Singh AP, Singh D, Kesavan AK, Arora S, Tiwary AK, Bedi N. Enhanced oral bioavailability and anti-diabetic activity of canagliflozin through a spray dried lipid based oral delivery: a novel paradigm. ACTA ACUST UNITED AC 2020; 28:191-208. [PMID: 32034683 DOI: 10.1007/s40199-020-00330-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/17/2020] [Indexed: 02/07/2023]
Abstract
AIM Canagliflozin (CFZ), a novel SGLT II antagonist, exhibits erratic absorption after oral administration. The current study entails development and evaluation of spray dried lipid based formulation (solid SMEDDS) for enhancing oral bioavailability and anti-diabetic activity of CFZ. METHODS Solid SMEDDS developed through spray drying containing Neusilin US2 as an adsorbent. The formed solid SMEDDS were characterized for physicochemical and solid state attributes. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) were used to confirm the spherical morphology. In vitro dissolution, ex vivo permeability and in vivo pharmacokinetic studies were conducted to determine the release rate, permeation rate and absorption profile of CFZ, respectively. Pharmacodynamic studies were done as per standard protocols. RESULTS The optimized solid SMEDDS exhibited acceptable practical yield and flow properties and is vouched with enhanced amorphization, nanoparticulate distribution and acceptable drug content. The spherical morphology of solid SMEDDS and reconstituted SMEDDS were confirmed in SEM and TEM, respectively. In vitro dissolution studies revealed multi-fold release behavior in CFZ in various dissolution media, whereas, remarkable permeability was observed in jejunum segment of rat intestine. Pharmacokinetic studies of CFZ in solid SMEDDS demonstrated 2.53 and 1.43 fold enhancement in Cmax and 2.73 and 1.98 fold in AUC 0-24h, as compared to pure API and marketed formulation, respectively. Pharmacological evaluation of solid SMEDDS revealed enhanced anti-diabetic activity of CFZ through predominant SGLT II inhibition in rats, as evident from evaluation of biochemical levels, urinary glucose excretion studies and SGLT II expression analysis. CONCLUSION The current work describes significant improvement biopharmaceutical properties of CFZ in solid SMEDD formulation. Graphical abstract Graphical Abstract: Enhanced oral bioavailability and anti-diabetic activity of canagliflozin through a spray dried lipid based oral delivery: a novel paradigm.
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Affiliation(s)
- Dilpreet Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Amrit Pal Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Drishtant Singh
- Department of Molecular Biology and Biochemistry, Molecular Microbiology Lab, Guru Nanak Dev University, Amritsar, 143005, India
| | - Anup Kumar Kesavan
- Department of Molecular Biology and Biochemistry, Molecular Microbiology Lab, Guru Nanak Dev University, Amritsar, 143005, India
| | - Saroj Arora
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Ashok K Tiwary
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, 147002, India
| | - Neena Bedi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India.
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Okabe K, Yaku K, Tobe K, Nakagawa T. Implications of altered NAD metabolism in metabolic disorders. J Biomed Sci 2019; 26:34. [PMID: 31078136 PMCID: PMC6511662 DOI: 10.1186/s12929-019-0527-8] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/25/2019] [Indexed: 12/15/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is an important coenzyme that participates in various energy metabolism pathways, including glycolysis, β-oxidation, and oxidative phosphorylation. Besides, it is a required cofactor for post-translational modifications such as ADP-ribosylation and deacetylation by poly (ADP-ribose) polymerases (PARPs) and sirtuins, respectively. Thus, NAD regulates energy metabolism, DNA damage repair, gene expression, and stress response through these enzymes. Numerous studies have shown that NAD levels decrease with aging and under disturbed nutrient conditions, such as obesity. Additionally, a decline in NAD levels is closely related to the development of various metabolic disorders, including diabetes and fatty liver disease. In addition, many studies have revealed that administration of NAD precursors, such as nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR), efficiently increase NAD levels in various tissues and prevent such metabolic diseases. These NAD precursors are contained in natural foods, such as cow milk, vegetables, and meats. Therefore, altered NAD metabolism can be a practical target for nutritional intervention. Recently, several human clinical trials using NAD precursors have been conducted to investigate the safety, pharmacokinetics, and efficacy against metabolic disorders such as glucose intolerance. In this review, we summarize current knowledge on the implications of NAD metabolism in metabolic diseases and discuss the outcomes of recent human clinical trials.
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Affiliation(s)
- Keisuke Okabe
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
- First Department of Internal Medicine, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, 930-0194 Japan
| | - Keisuke Yaku
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
| | - Kazuyuki Tobe
- First Department of Internal Medicine, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, 930-0194 Japan
| | - Takashi Nakagawa
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
- Institute of Natural Medicine, University of Toyama, Toyama, 930-0194 Japan
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Lee HJ, Yang SJ. Nicotinamide riboside regulates inflammation and mitochondrial markers in AML12 hepatocytes. Nutr Res Pract 2018; 13:3-10. [PMID: 30788050 PMCID: PMC6369115 DOI: 10.4162/nrp.2019.13.1.3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/06/2018] [Accepted: 10/30/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND/OBJECTIVES The NAD+ precursor nicotinamide riboside (NR) is a type of vitamin B3 found in cow's milk and yeast-containing food products such as beer. Recent studies suggested that NR prevents hearing loss, high-fat diet-induced obesity, Alzheimer's disease, and mitochondrial myopathy. The objective of this study was to investigate the effects of NR on inflammation and mitochondrial biogenesis in AML12 mouse hepatocytes. MATERIALS/METHODS A subset of hepatocytes was treated with palmitic acid (PA; 250 µM) for 48 h to induce hepatocyte steatosis. The hepatocytes were treated with NR (10 µM and 10 mM) for 24 h with and without PA. The cell viability and the levels of sirtuins, inflammatory markers, and mitochondrial markers were analyzed. RESULTS Cytotoxicity of NR was examined by PrestoBlue assay. Exposure to NR had no effect on cell viability or morphology. Gene expression of sirtuin 1 (Sirt1) and Sirt3 was significantly upregulated by NR in PA-treated hepatocytes. However, Sirt1 activities were increased in hepatocytes treated with low-dose NR. Hepatic pro-inflammatory markers including tumor necrosis factor-alpha and interleukin-6 were decreased in NR-treated cells. NR upregulated anti-inflammatory molecule adiponectin, and, tended to down-regulate hepatokine fetuin-A in PA-treated hepatocytes, suggesting its inverse regulation on these cytokines. NR increased levels of mitochondrial markers including peroxisome proliferator-activated receptor γ coactivator-1α, carnitine palmitoyltransferase 1, uncoupling protein 2, transcription factor A, mitochondrial and mitochondrial DNA in PA-treated hepatocytes. CONCLUSIONS These data demonstrated that NR attenuated hepatic inflammation and increased levels of mitochondrial markers in hepatocytes.
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Affiliation(s)
- Hee Jae Lee
- Department of Food and Nutrition, Seoul Women's University, 621 Hwarangro, Nowon-Gu, Seoul 01797, Korea
| | - Soo Jin Yang
- Department of Food and Nutrition, Seoul Women's University, 621 Hwarangro, Nowon-Gu, Seoul 01797, Korea
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Naidu PB, Sathibabu Uddandrao VV, Naik RR, Pothani S, Munipally PK, Meriga B, Begum MS, Varatharaju C, Pandiyan R, Saravanan G. Effects of S-Allylcysteine on Biomarkers of the Polyol Pathway in Rats with Type 2 Diabetes. Can J Diabetes 2016; 40:442-448. [PMID: 27373435 DOI: 10.1016/j.jcjd.2016.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 03/21/2016] [Accepted: 03/23/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES We evaluated the effects of S-allylcysteine (SAC) on biomarkers of the polyol pathway in streptozotocin-nicotinamide (STZ-NA)-induced diabetes in rats. METHODS Diabetes was induced in male albino Wistar rats by intraperitoneal administration of STZ (55 mg kg-1 bw-1) and NA (110 mg kg-1 bw-1). SAC (150 mg kg-1 bw-1) was orally administered to the rats with diabetes for 45 days to assess its effects on blood glucose, insulin, insulin resistance, glycated hemoglobin, aldose reductase (AR), sorbitol dehydrogenase (SDH), sorbitol, fructose, thiobarbituric acid-reactive substances (TBARS), hydroperoxide, hemoglobin and glutathione (GSH). RESULTS On SAC administration in the rats with diabetes, the levels of blood glucose, insulin resistance, glycated hemoglobin, AR, SDH, sorbitol, fructose, TBARS and hydroperoxide increased significantly (p<0.05), whereas those of insulin, hemoglobin and GSH decreased. SAC showed therapeutic effects similar to those of gliclazide in decreasing blood glucose, AR, SDH, sorbitol, fructose, glycosylated hemoglobin, TBARS and hydroperoxides levels and significant increases in insulin, hemoglobin and GSH activity in rats with diabetes. Moreover, histopathologic studies also revealed the protective effect of SAC on pancreatic beta cells. CONCLUSIONS The results indicate that SAC prevents complications of diabetes by reducing the influx of glucose in the polyol pathway, thereby elevating the GSH level and reducing the activities of AR and SDH. Therefore, SAC may have imperative implications for the deterrence and early treatment of type 2 diabetes.
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Affiliation(s)
- Parim Brahma Naidu
- Animal Physiology and Biochemistry Laboratory, Department of Biochemistry, Sri Venkateswara University, Tirupati, India
| | - V V Sathibabu Uddandrao
- Department of Biochemistry, Centre for Biological Science, K. S. Rangasamy College of Arts and Science, Thokkavadi, Tiruchengode, Tamil Nadu, India
| | - Ramavat Ravindar Naik
- National Center for Laboratory Animal Sciences, National Institute of Nutrition (ICMR), New Delhi, India
| | - Suresh Pothani
- National Center for Laboratory Animal Sciences, National Institute of Nutrition (ICMR), New Delhi, India
| | | | - Balaji Meriga
- Animal Physiology and Biochemistry Laboratory, Department of Biochemistry, Sri Venkateswara University, Tirupati, India
| | - Mustapha Sabana Begum
- Department of Biochemistry, Muthayammal College of Arts and Science, Rasipuram, Tamil Nadu, India
| | - Chandrasekar Varatharaju
- Department of Biotechnology, Centre for Biological Science, K. S. Rangasamy College of Arts and Science, Thokkavadi, Tiruchengode, Tamil Nadu, India
| | - Rajesh Pandiyan
- Department of Biochemistry, Centre for Biological Science, K. S. Rangasamy College of Arts and Science, Thokkavadi, Tiruchengode, Tamil Nadu, India
| | - Ganapathy Saravanan
- Department of Biochemistry, Centre for Biological Science, K. S. Rangasamy College of Arts and Science, Thokkavadi, Tiruchengode, Tamil Nadu, India.
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Aboonabi A, Rahmat A, Othman F. Antioxidant effect of pomegranate against streptozotocin-nicotinamide generated oxidative stress induced diabetic rats. Toxicol Rep 2014; 1:915-922. [PMID: 28962304 PMCID: PMC5598111 DOI: 10.1016/j.toxrep.2014.10.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 10/13/2014] [Accepted: 10/27/2014] [Indexed: 01/16/2023] Open
Abstract
Oxidative stress attributes a crucial role in chronic complication of diabetes. The aim of this study was to determine the most effective part of pomegranate on oxidative stress markers and antioxidant enzyme activities against streptozotocin-nicotinamide (STZ-NA)-induced diabetic rats. Male Sprague-Dawley rats were randomly divided into six groups. Experimental diabetes was induced by a single intraperitoneal injection (i.p), 15 min after the i.p administration of NA. Diabetic rats showed significant increase in plasma glucose level, and the significant decrease in plasma insulin level. The activities of antioxidant enzymes such as total antioxidant status (TAS), superoxide dismutase (SOD), and catalase (CAT) reduced while the levels of biomarkers of oxidative stress such as gamma-glutamyle transferase (GGT), and malondialdehyde (MDA) increased in diabetic control rats as compared to normal control rats. Oral treatment with pomegranate seed-juice for 21 days demonstrated significant protective effects on all the biochemical parameters studied. Besides, biochemical findings were supported by histopathological study. These results revealed that pomegranate has potential protective effect against oxidative stress induced diabetic rats.
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Affiliation(s)
- Anahita Aboonabi
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Asmah Rahmat
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Fauziah Othman
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Ferreira MR, Camberos MDC, Selenscig D, Martucci LC, Chicco A, Lombardo YB, Cresto JC. Changes in hepatic lipogenic and oxidative enzymes and glucose homeostasis induced by an acetyl-l-carnitine and nicotinamide treatment in dyslipidaemic insulin-resistant rats. Clin Exp Pharmacol Physiol 2013; 40:205-11. [DOI: 10.1111/1440-1681.12050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 12/11/2012] [Accepted: 12/18/2012] [Indexed: 01/06/2023]
Affiliation(s)
- Maria R Ferreira
- Department of Biochemistry; School of Biochemistry; Litoral University; Santa Fe; Argentina
| | - Maria del C Camberos
- Endocrinology Research Centre (CEDIE); Ricardo Gutierrez Hospital; Buenos Aires; Argentina
| | - Dante Selenscig
- Department of Biochemistry; School of Biochemistry; Litoral University; Santa Fe; Argentina
| | - Lucía C Martucci
- Endocrinology Research Centre (CEDIE); Ricardo Gutierrez Hospital; Buenos Aires; Argentina
| | - Adriana Chicco
- Department of Biochemistry; School of Biochemistry; Litoral University; Santa Fe; Argentina
| | - Yolanda B Lombardo
- Department of Biochemistry; School of Biochemistry; Litoral University; Santa Fe; Argentina
| | - Juan C Cresto
- Endocrinology Research Centre (CEDIE); Ricardo Gutierrez Hospital; Buenos Aires; Argentina
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Arya A, Cheah SC, Looi CY, Taha H, Mustafa MR, Mohd MA. The methanolic fraction of Centratherum anthelminticum seed downregulates pro-inflammatory cytokines, oxidative stress, and hyperglycemia in STZ-nicotinamide-induced type 2 diabetic rats. Food Chem Toxicol 2012; 50:4209-20. [PMID: 22939938 DOI: 10.1016/j.fct.2012.08.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 06/27/2012] [Accepted: 08/06/2012] [Indexed: 01/01/2023]
Abstract
This study aimed to ascertain the potential of Centratherum anthelminticum seeds methanolic fraction (CAMFs) for the management of type 2 diabetes and its associated complications. CAMFs was initially tested on β-TC6 cells for H(2)O(2)-induced nuclear factor-κB (NF-κB) translocation effects. The result displayed that CAMFs significantly inhibited NF-κB translocation from cytoplasm into the nucleus, dose-dependently. Furthermore, a 12-week sub-chronic CAMFs study was carried out on streptozotocin (STZ)-nicotinamide-induced type 2 diabetic rat model to evaluate glycemia, essential biochemical parameters, lipid levels, oxidative stress markers, and pro-inflammatory cytokines level. Our study result showed that CAMFs reduced hyperglycemia by increasing serum insulin, C-peptide, total protein, and albumin levels, significantly. Whereas, elevated blood glucose, glycated hemoglobin, lipids and enzyme activities were restored to near normal. CAMFs confirmed antioxidant potential by elevating glutathione (GSH) and reducing malondialdehyde (MDA) levels in diabetic rats. Interestingly, CAMFs down-regulated elevated tumor necrosis factor α (TNF-α), interleukin (IL)-1β and IL-6 in the tissues and serum of the diabetic rats. We conclude that CAMFs exerted apparent antidiabetic effects and demonstrated as a valuable candidate nutraceutical for insulin-resistant type 2 diabetes and its associated complications such as dyslipidemia, oxidative stress, and inflammation.
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Affiliation(s)
- Aditya Arya
- Department of Pharmacology, Faculty of medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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Srinivasan S, Pari L. Ameliorative effect of diosmin, a citrus flavonoid against streptozotocin-nicotinamide generated oxidative stress induced diabetic rats. Chem Biol Interact 2011; 195:43-51. [PMID: 22056647 DOI: 10.1016/j.cbi.2011.10.003] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/14/2011] [Accepted: 10/18/2011] [Indexed: 11/16/2022]
Abstract
Oxidative stress has been suggested as a contributory factor in development and complication of diabetes. The aim of the study was to evaluate the effect of diosmin (DS) in oxidative stress in streptozotocin-nicotinamide (STZ-NA)-induced diabetic rats by measuring the lipid peroxidation (LPO) as well as the ameliorative properties. Experimental diabetes was induced by a single intraperitoneal (i.p) injection of STZ (45 mg/kg body weight (b.w.)) dissolved in 0.1 mol/L citrate buffer (pH 4.5), 15 min after the i.p administration of NA (110 mg/kg b.w.). Diabetic rats exhibited increased plasma glucose with significant decrease in plasma insulin levels. The activities of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST) and the levels of low-molecular weight antioxidants vitamin C, vitamin E and reduced glutathione (GSH) were decreased while increases in the levels of LPO markers were observed in liver and kidney tissues of diabetic control rats as compared to normal control rats. Oral treatment with DS (100mg/kg/day) for a period of 45 days showed significant ameliorative effects on all the biochemical parameters studied. Biochemical findings were supported by histological studies. These results indicated that DS has potential ameliorative effects in addition to its antidiabetic effect in type 2 diabetic rats.
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Affiliation(s)
- Subramani Srinivasan
- Department of Biochemistry and Biotechnology, Annamalai University, Tamilnadu, India
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Kim MK, Chae YN, Kim HD, Yang EK, Cho EJ, Choi SH, Cheong YH, Kim HS, Kim HJ, Jo YW, Son MH, Kim SH, Shin CY. DA-1229, a novel and potent DPP4 inhibitor, improves insulin resistance and delays the onset of diabetes. Life Sci 2011; 90:21-9. [PMID: 22056373 DOI: 10.1016/j.lfs.2011.10.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 09/05/2011] [Accepted: 10/03/2011] [Indexed: 12/18/2022]
Abstract
AIM To characterize the pharmacodynamic profile of DA-1229, a novel dipeptidyl peptidase (DPP) 4 inhibitor. MAIN METHODS Enzyme inhibition assays against DPP4, DPP8 and DPP9. Antidiabetic effects of DA-1229 in HF-DIO mice and young db/db mice. KEY FINDINGS DA-1229 was shown to potently inhibit the DPP4 enzyme in human and murine soluble forms and the human membrane-bound form with IC(50) values of 0.98, 3.59 and 1.26 nM, respectively. As a reversible and competitive inhibitor, DA-1229 was more selective to human DPP4 (6000-fold) than to human DPP8 and DPP9. DA-1229 (0.1-3mg/kg) dose-dependently inhibited plasma DPP4 activity, leading to increased levels of plasma GLP-1 and insulin, and thereby lowering blood glucose levels in mice. In high fat diet-fed (HF) mice, a single oral dose of 100mg/kg of DA-1229 reduced plasma DPP4 activity by over 80% during a 24h period. Long-term treatment with DA-1229 for 8 weeks revealed significant improvements in glucose intolerance and insulin resistance, accompanied by significant body weight reduction. However, it remains unclear whether there is a direct causal relationship between DPP4 inhibition and body weight reduction. In young db/db mice, the DA-1229 treatment significantly reduced blood glucose excursions for the first 2 weeks, resulting in significantly lower levels of HbA1c at the end of the study. Furthermore, the pancreatic insulin content of the treatment group was significantly higher than that of the db/db control. SIGNIFICANCE DA-1229 as a novel and selective DPP4 inhibitor improves the insulin sensitivity in HF mice and delays the onset of diabetes in young db/db mice.
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Affiliation(s)
- Mi-Kyung Kim
- Dong-A Pharm. Research Center, 47-5 Sanggal-dong, Giheung-gu, Yongin-si, Gyeonggi-do, 446-905, Republic of Korea
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Yang Q, Wang S, Xie Y, Sun J, Wang J. HPLC analysis of Ganoderma lucidum polysaccharides and its effect on antioxidant enzymes activity and Bax, Bcl-2 expression. Int J Biol Macromol 2010; 46:167-72. [DOI: 10.1016/j.ijbiomac.2009.11.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 11/11/2009] [Accepted: 11/18/2009] [Indexed: 11/24/2022]
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Palsamy P, Subramanian S. Modulatory effects of resveratrol on attenuating the key enzymes activities of carbohydrate metabolism in streptozotocin-nicotinamide-induced diabetic rats. Chem Biol Interact 2008; 179:356-62. [PMID: 19059388 DOI: 10.1016/j.cbi.2008.11.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2008] [Revised: 11/08/2008] [Accepted: 11/10/2008] [Indexed: 10/21/2022]
Abstract
Resveratrol, a ubiquitous stress-induced phytoalexin, has demonstrated a wide variety of biological activities which make it a good candidate for the treatment of diabetes mellitus. The present study was aimed to evaluate its therapeutic potential by assaying the activities of key enzymes of carbohydrate metabolism in streptozotocin-nicotinamide-induced diabetic rats. The daily oral treatment of resveratrol (5 mg/kg body weight) to diabetic rats for 30 days demonstrated a significant (p<0.05) decline in blood glucose and glycosylated hemoglobin levels and a significant (p<0.05) increase in plasma insulin level. The altered activities of the key enzymes of carbohydrate metabolism such as hexokinase, pyruvate kinase, lactate dehydrogenase, glucose-6-phosphatase, fructose-1,6-bisphosphatase, glucose-6-phosphate dehydrogenase, glycogen synthase and glycogen phosphorylase in liver and kidney tissues of diabetic rats were significantly (p<0.05) reverted to near normal levels by the administration of resveratrol. Further, resveratrol administration to diabetic rats improved hepatic glycogen content suggesting the antihyperglycemic potential of resveratrol in diabetic rats. The obtained results were compared with glyclazide, a standard oral hypoglycemic drug. Thus, the modulatory effects of resveratrol on attenuating these enzymes activities afford a promise for widespread use for treatment of diabetes in the future.
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Affiliation(s)
- P Palsamy
- Research Scholar, Department of Biochemistry, University of Madras, Guindy Campus, Chennai 600025, Tamilnadu, India
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Resveratrol, a natural phytoalexin, normalizes hyperglycemia in streptozotocin-nicotinamide induced experimental diabetic rats. Biomed Pharmacother 2008; 62:598-605. [DOI: 10.1016/j.biopha.2008.06.037] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2008] [Accepted: 06/12/2008] [Indexed: 01/19/2023] Open
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Shen W, Hao J, Tian C, Ren J, Yang L, Li X, Luo C, Cotma CW, Liu J. A combination of nutriments improves mitochondrial biogenesis and function in skeletal muscle of type 2 diabetic Goto-Kakizaki rats. PLoS One 2008; 3:e2328. [PMID: 18523557 PMCID: PMC2391295 DOI: 10.1371/journal.pone.0002328] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Accepted: 04/26/2008] [Indexed: 12/25/2022] Open
Abstract
Background Recent evidence indicates that insulin resistance in skeletal muscle may be related to reduce mitochondrial number and oxidation capacity. However, it is not known whether increasing mitochondrial number and function improves insulin resistance. In the present study, we investigated the effects of a combination of nutrients on insulin resistance and mitochondrial biogenesis/function in skeletal muscle of type 2 diabetic Goto–Kakizaki rats. Methodology/Principal Findings We demonstrated that defect of glucose and lipid metabolism is associated with low mitochondrial content and reduced mitochondrial enzyme activity in skeletal muscle of the diabetic Goto-Kakizaki rats. The treatment of combination of R-α-lipoic acid, acetyl-L-carnitine, nicotinamide, and biotin effectively improved glucose tolerance, decreased the basal insulin secretion and the level of circulating free fatty acid (FFA), and prevented the reduction of mitochondrial biogenesis in skeletal muscle. The nutrients treatment also significantly increased mRNA levels of genes involved in lipid metabolism, including peroxisome proliferator–activated receptor-α (Pparα), peroxisome proliferator–activated receptor-δ (Pparδ), and carnitine palmitoyl transferase-1 (Mcpt-1) and activity of mitochondrial complex I and II in skeletal muscle. All of these effects of mitochondrial nutrients are comparable to that of the antidiabetic drug, pioglitazone. In addition, the treatment with nutrients, unlike pioglitazone, did not cause body weight gain. Conclusions/Significance These data suggest that a combination of mitochondrial targeting nutrients may improve skeletal mitochondrial dysfunction and exert hypoglycemic effects, without causing weight gain.
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MESH Headings
- Animals
- DNA, Mitochondrial/metabolism
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes Mellitus, Type 2/physiopathology
- Dietary Supplements
- Fatty Acids, Nonesterified/blood
- Glucose Tolerance Test
- Mitochondria, Muscle/drug effects
- Mitochondria, Muscle/metabolism
- Mitochondria, Muscle/physiology
- Muscle Proteins/metabolism
- Muscle, Skeletal/drug effects
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/physiopathology
- Rats
- Rats, Mutant Strains
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Affiliation(s)
- Weili Shen
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jiejie Hao
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
- Graduate School of the Chinese Academy of Sciences, Beijing, China
| | - Chuan Tian
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
- Graduate School of the Chinese Academy of Sciences, Beijing, China
| | - Jinmin Ren
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Lu Yang
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xuesen Li
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
- Graduate School of the Chinese Academy of Sciences, Beijing, China
| | - Cheng Luo
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Carl W. Cotma
- Institute for Brain Aging and Dementia, University of California Irvine, Irvine, California, United States of America
| | - Jiankang Liu
- Institute for Brain Aging and Dementia, University of California Irvine, Irvine, California, United States of America
- * E-mail:
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Hao J, Shen W, Tian C, Liu Z, Ren J, Luo C, Long J, Sharman E, Liu J. Mitochondrial nutrients improve immune dysfunction in the type 2 diabetic Goto-Kakizaki rats. J Cell Mol Med 2008; 13:701-11. [PMID: 18410524 PMCID: PMC3822877 DOI: 10.1111/j.1582-4934.2008.00342.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The development of type 2 diabetes is accompanied by decreased immune function and the mechanisms are unclear. We hypothesize that oxidative damage and mitochondrial dysfunction may play an important role in the immune dysfunction in diabetes. In the present study, we investigated this hypothesis in diabetic Goto-Kakizaki rats by treatment with a combination of four mitochondrial-targeting nutrients, namely, R-α-lipoic acid, acetyl-L-carnitine, nicotinamide and biotin. We first studied the effects of the combination of these four nutrients on immune function by examining cell proliferation in immune organs (spleen and thymus) and immunomodulating factors in the plasma. We then examined, in the plasma and thymus, oxidative damage biomarkers, including lipid peroxidation, protein oxidation, reactive oxygen species, calcium and antioxidant defence systems, mitochondrial potential and apoptosis-inducing factors (caspase 3, p53 and p21). We found that immune dysfunction in these animals is associated with increased oxidative damage and mitochondrial dysfunction and that the nutrient treatment effectively elevated immune function, decreased oxidative damage, enhanced mitochondrial function and inhibited the elevation of apoptosis factors. These effects are comparable to, or greater than, those of the anti-diabetic drug pioglitazone. These data suggest that a rational combination of mitochondrial-targeting nutrients may be effective in improving immune function in type 2 diabetes through enhancement of mitochondrial function, decreased oxidative damage, and delayed cell death in the immune organs and blood.
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Affiliation(s)
- Jiejie Hao
- Institute for Nutritional Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, China
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Islam MS, Choi H. Nongenetic model of type 2 diabetes: a comparative study. Pharmacology 2007; 79:243-9. [PMID: 17457033 DOI: 10.1159/000101989] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2006] [Accepted: 12/22/2006] [Indexed: 01/08/2023]
Abstract
Seven-week-old male Sprague-Dawley (SD) rats were divided into six groups (LFC, LFD, HFC, HFD30, HFD40, HFD50) to determine whether animals receiving a low-fat (LF) diet plus nicotinamide-streptozotocin (NA-STZ) injection or animals receiving a high-fat (HF) diet plus STZ injection provide a better model of type 2 diabetes. After 2 weeks of feeding, diabetes was induced by intraperitoneal injection of NA (230 mg/kg BW) and STZ (65 mg/kg BW) in LFD, and STZ 30, 40, 50 mg/kg BW to HFD30, HFD40, HFD50 groups, respectively. Fasting blood glucose at 48-72 h and nonfasting blood glucose at 1 week after STZ injection were >200 and >600 mg/dl, respectively, in HFD40 and HFD50 groups while no significant difference was observed among other groups. Serum insulin concentration was significantly (p < 0.05) decreased in LFD, HFC, HFD30, and HFD40 groups compared to LFC and HFD50 groups. One animal died and other animals of the HFD50 group were in a critical condition. Serum lipid and liver glycogen were increased in HFD groups compared to other groups. The results of this study suggest that the HF diet-fed, 40-mg/kg BW STZ-injected SD rat is better than the LF diet-fed NA-STZ-injected rat as an animal model of human type 2 diabetes.
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Affiliation(s)
- Md Shahidul Islam
- Department of Food and Nutrition, Seoul National University, Seoul, South Korea.
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