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Joharapurkar A, Kshirsagar S, Patel V, Patel M, Savsani H, Jain M. In vivo antidiabetic activity of nimesulide due to inhibition of amino acid transport. Basic Clin Pharmacol Toxicol 2021; 130:35-43. [PMID: 34634192 DOI: 10.1111/bcpt.13670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 10/04/2021] [Accepted: 10/04/2021] [Indexed: 01/22/2023]
Abstract
Inhibiting the intestinal and renal neutral amino acid transporter B0AT1 by genetic means has improved insulin sensitivity in mice, but there are no antagonists available for preclinical or clinical use. Since the anti-inflammatory agent nimesulide selectively inhibited B0AT1 in vitro, we hypothesized that nimesulide exhibits in vivo potential to restrict neutral amino acid absorption and, therefore, may improve insulin sensitivity. The dose-related effect of nimesulide (10 to 100 mg/kg, PO) on intestinal absorption of neutral amino acids was estimated in C57 mice. The effect of nimesulide (50 mg/kg, PO) on renal resorption of amino acids was also assessed. The effect of chronic nimesulide (50 mg/kg, PO, BID for 14 days) was assessed in high protein diet-fed C57 mice, diet-induced obese mice and obese and diabetic db/db mice. Acute and chronic nimesulide treatment decreased absorption of neutral amino acids and increased their urinary excretion. Nimesulide treatment improved insulin sensitivity and glycemic control, increased GLP-1, decreased liver lipids and improved FGF-21 in serum. Nimesulide improved insulin sensitivity and glucose tolerance by inhibiting neutral amino acid transport in the intestine and kidneys. Thus, it can serve as a tool compound for in vivo B0AT1 inhibition.
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Affiliation(s)
- Amit Joharapurkar
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
| | - Samadhan Kshirsagar
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
| | - Vishal Patel
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
| | - Maulik Patel
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
| | - Hardikkumar Savsani
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
| | - Mukul Jain
- Department of Pharmacology and Toxicology, Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, India
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Arimura E, Ushikai M, Horiuchi M. Higher Branched-chain Amino Acids and Lower Serine Exist in the Plasma of Nondiabetic Mice: A Comparison Between High- and Low-protein Diet Conditions. In Vivo 2021; 35:1555-1560. [PMID: 33910835 DOI: 10.21873/invivo.12410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/14/2021] [Accepted: 03/29/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM The effects of dietary protein and carbohydrate content on the plasma amino acid profile of patients with diabetes are not fully understood. Therefore, we examined whether there are effects of diets with differing proportions of protein and carbohydrate on the plasma amino acid concentrations of control (CT) mice and mice with type 2 diabetes (db). MATERIALS AND METHODS We used db mice as an animal model of type 2 diabetes which are genetically deficient in leptin receptor. Diets with differing proportions of protein and carbohydrates (L diet: low protein/carbohydrate ratio, H diet: high protein/carbohydrate ratio) were supplied. db Mice were fed with a restriction on the basis of the consumption by CT-L mice, such that equivalent amounts of energy and fat were consumed. In CT mice fed the L or H diets, there was no significant difference in ad libitum food intake. RESULTS There were significant interactions between diet and genotype with respect to water intake, urine volume, urinary glucose concentration, and plasma isoleucine, leucine, valine, branched-chain amino acids, and serine concentrations. db-H mice showed significantly higher water intake, urine volume, and urinary glucose than db-L mice. db Mice fed the L or H diets had similar plasma amino acid profiles, except for valine. In contrast, CT-H mice showed significantly higher valine and branched-chain amino acids and lower serine concentrations than CT-L mice. Thus, the CT-H mice were more similar to db mice fed either of the diets. CONCLUSION There were different effects of the dietary protein or carbohydrate content on the plasma amino acid profiles between nondiabetic and diabetic mice. In particular, the profiles in nondiabetic conditions were different between the low- and high-protein diet conditions.
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Affiliation(s)
- Emi Arimura
- Major in Food and Nutrition, Department of Life and Environmental Science, Kagoshima Prefectural College, Kagoshima, Japan; .,Department of Hygiene and Health Promotion Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Miharu Ushikai
- Department of Hygiene and Health Promotion Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Masahisa Horiuchi
- Department of Hygiene and Health Promotion Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Effects of the amount and type of carbohydrates used in type 2 diabetes diets in animal models: A systematic review. PLoS One 2020; 15:e0233364. [PMID: 32530969 PMCID: PMC7292416 DOI: 10.1371/journal.pone.0233364] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 05/04/2020] [Indexed: 12/28/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is among the most prevalent diseases in the world, affecting over 420 million people. The disease is marked by a poor metabolic effect of insulin leading to chronic hyperglycaemia, which can result in microvascular complications. It is widely known that postprandial glycaemia is reliant on the total carbohydrate content of a meal. However, the importance of the amount and the source of these carbohydrates remains controversial due to mechanisms other than insulin secretion. Oxidative stress, inflammation, pyruvate production and the quality of the intestinal microbiota, resulting in plasma lipopolysaccharides and short-chain fatty acids production, play an important role in blood sugar control and consequently in type 2 diabetes. Thus, we systematically reviewed the preclinical evidences on the impact of the amount and type of carbohydrate found in different diets and its influence on blood glucose levels in diabetic animals. We used a comprehensive and structured search in biomedical databases Medline (PubMed), Scopus and Web of Science, recovering and analyzing 27 original studies. Results showed that sucrose-rich diets deteriorated diabetic condition in animal models regardless of the total dietary carbohydrate content. On the other hand, fiber, particularly resistant starch, improved blood glucose parameters through direct and indirect mechanisms, such as delayed gastric emptying and improved gut microbiota. All studies used rodents as animal models and male animals were preferred over females. Improvements in T2DM parameters in animal models were more closely related to the type of dietary carbohydrate than to its content on a diet, i. e., resistant starch seems to be the most beneficial source for maintaining normoglycemia. Results show that current literature is at high risk of bias due to neglecting experimental methods.
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Zeng X, Du X, Zhang J, Jiang S, Liu J, Xie Y, Shan W, He G, Sun Q, Zhao J. The essential function of CARD9 in diet-induced inflammation and metabolic disorders in mice. J Cell Mol Med 2018; 22:2993-3004. [PMID: 29575791 PMCID: PMC5980191 DOI: 10.1111/jcmm.13494] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022] Open
Abstract
Inflammation and metabolic disorder are common pathophysiological conditions, which play a vital role in the development of obesity and type 2 diabetes. The purpose of this study was to explore the effects of caspase recruitment domain (CARD) 9 in the high fat diet (HFD)‐treated mice and attempt to find a molecular therapeutic target for obesity development and treatment. Sixteen male CARD9−/− and corresponding male WT mice were fed with normal diet or high fat diet, respectively, for 12 weeks. Glucose tolerance, insulin resistance, oxygen consumption and heat production of the mice were detected. The CARD9/MAPK pathway‐related gene and protein were determined in insulin‐responsive organs using Western blotting and quantitative PCR. The results showed that HFD‐induced insulin resistance and impairment of glucose tolerance were more severe in WT mice than that in the CARD9−/− mice. CARD9 absence significantly modified O2 consumption, CO2 production and heat production. CARD9−/− mice displayed the lower expression of p38 MAPK, JNK and ERK when compared to the WT mice in both HFD‐ and ND‐treated groups. HFD induced the increase of p38 MAPK, JNK and ERK in WT mice but not in the CARD9−/− mice. The results indicated that CARD9 absence could be a vital protective factor in diet‐induced obesity via the CARD9/MAPK pathway, which may provide new insights into the development of gene knockout to improving diet‐induced obesity and metabolism disorder.
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Affiliation(s)
- Xuejiao Zeng
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
| | - Xihao Du
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
| | - Jia Zhang
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
| | - Shuo Jiang
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
| | - Jie Liu
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
| | - Yuquan Xie
- Department of Cardiology, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Shan
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Ministry of Education, Fudan University, Shanghai, China
| | - Guanglong He
- College of Health Sciences, University of Wyoming School of Pharmacy, Laramie, WY, USA
| | - Qinghua Sun
- Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Jinzhuo Zhao
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China.,The Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Meteorology and Health, Shanghai, China
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Arimura E, Okatani H, Araki T, Ushikai M, Nakakuma M, Abe M, Kawaguchi H, Izumi H, Horiuchi M. Effects of Diets with Different Proportions of Protein/Carbohydrate on Retinal Manifestations in db Mice. In Vivo 2018; 32:265-272. [PMID: 29475908 PMCID: PMC5905193 DOI: 10.21873/invivo.11233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND/AIM Diabetic nephropathy is aggravated by a higher intake of total protein. The effects of diets with different proportions of protein and carbohydrate on diabetic retinopathy in db mice, a type-2 diabetes animal model, were examined, as well as diabetic nephropathy. MATERIALS AND METHODS Control and db mice at 5 weeks of age were fed the diets (% energy of protein/carbohydrate/fat; L-diet: 12/71/17; H-diet: 24/59/17) under ad libitum conditions and pair-feeding conditions for 6 weeks, respectively. RESULTS Mice fed the H-diet showed significantly greater retinal thickness by optical coherence tomography, and lower mRNA levels of angiotensinogen. Comparing combinations of diets and genotypes, db-H mice showed significantly higher mRNA levels of angiotensin-converting enzyme, advanced glycosylation end product-specific receptor, and cluster of differentiation molecule 11b (a microglial marker) than db-L mice. CONCLUSION Dietary protein and carbohydrate proportions influenced retinal manifestations, including retinal thickness and gene expression in control and diabetic mice.
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Affiliation(s)
- Emi Arimura
- Department of Life and Environmental Science, Kagoshima Prefectural College, Kagoshima, Japan
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideaki Okatani
- Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories, Ltd., Kagoshima, Japan
| | - Tomoaki Araki
- Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories, Ltd., Kagoshima, Japan
| | - Miharu Ushikai
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Miwa Nakakuma
- Department of Life and Environmental Science, Kagoshima Prefectural College, Kagoshima, Japan
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masaharu Abe
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiroaki Kawaguchi
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiroyuki Izumi
- Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories, Ltd., Kagoshima, Japan
| | - Masahisa Horiuchi
- Department of Hygiene and Health Promotion Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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