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Ali AM, Gabbar MA, Abdel-Twab SM, Fahmy EM, Ebaid H, Alhazza IM, Ahmed OM. Antidiabetic Potency, Antioxidant Effects, and Mode of Actions of Citrus reticulata Fruit Peel Hydroethanolic Extract, Hesperidin, and Quercetin in Nicotinamide/Streptozotocin-Induced Wistar Diabetic Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1730492. [PMID: 32655759 PMCID: PMC7327566 DOI: 10.1155/2020/1730492] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 05/12/2020] [Accepted: 05/23/2020] [Indexed: 02/07/2023]
Abstract
This study is aimed at assessing the antihyperglycemic, antihyperlipidemic, and antioxidant effects of Citrus reticulata (C. reticulata) fruit peel hydroethanolic extract and two flavonoids, hesperidin and quercetin, in nicotinamide (NA)/streptozotocin- (STZ-) induced type 2 diabetic rats. In addition, GC-MS and HPLC-MS analyses of the extract were performed and the results indicated the presence of multiple flavonoids including hesperidin, quercetin, naringin, and polymethoxylated flavones (nobiletin and tangeretin). To achieve the aim of the study, diabetic rats with NA/STZ-induced T2DM were orally treated with C. reticulata fruit peel hydroethanolic extract, hesperidin, and quercetin at a dose of 100 mg/kg b.w./day for four weeks. The treatments with C. reticulata fruit peel extract, hesperidin, and quercetin significantly ameliorated the impaired oral glucose tolerance; the elevated serum fructosamine level; the diminished serum insulin and C-peptide levels; the altered HOMA-IR, HOMA-IS, and HOMA-β cell function; the decreased liver glycogen content; the increased liver glucose-6-phosphatase and glycogen phosphorylase activities; the deleteriously affected serum lipid profile; the elevated serum AST and ALT activities; and the raised serum creatinine and urea levels in the diabetic rats. The treatments also produced remarkable improvement in the antioxidant defense system manifested by a decrease in the elevated liver lipid peroxidation and an increase in the lowered glutathione content and GPx, GST, and SOD activities. Furthermore, the three treatments enhanced the mRNA expression of GLUT-4 and the insulin receptor β-subunit, but only quercetin produced a significant increase in the expression of adiponectin in adipose tissue of diabetic rats. In conclusion, C. reticulata fruit peel hydroethanolic extract, hesperidin, and quercetin have potent antidiabetic effects which may be mediated through their insulinotropic effects and insulin-sensitizing actions. In addition, the alleviation of the antioxidant defense system by the extract, hesperidin, and naringin may have an important action to enhance the antidiabetic actions and to improve liver and kidney functions in NA/STZ-induced diabetic rats.
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Affiliation(s)
- Alaa M. Ali
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, P. O. Box 62521, Egypt
| | - Mohamed Abdel Gabbar
- Biochemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, P. O. Box 62521, Egypt
| | - Sanaa M. Abdel-Twab
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, P. O. Box 62521, Egypt
| | - Eman M. Fahmy
- Department of Internal Medicine, Faculty of Medicine, Helwan University, Egypt
| | - Hossam Ebaid
- Department of Zoology, College of Science, King Saud University, P. O. Box 62521, Riyadh 11451, Saudi Arabia
- Department of Zoology, Faculty of Science, El-Minia University, P.O. Box 61519, Minya, Egypt
| | - Ibrahim M. Alhazza
- Department of Zoology, College of Science, King Saud University, P. O. Box 62521, Riyadh 11451, Saudi Arabia
| | - Osama M. Ahmed
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, P. O. Box 62521, Egypt
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102
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Howarth FC, Norstedt G, Boldyriev OI, Qureshi MA, Mohamed O, Parekh K, Venkataraman B, Subramanya S, Shmygol A, Al Kury LT. Effects of prolactin on ventricular myocyte shortening and calcium transport in the streptozotocin-induced diabetic rat. Heliyon 2020; 6:e03797. [PMID: 32322744 PMCID: PMC7170995 DOI: 10.1016/j.heliyon.2020.e03797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/12/2020] [Accepted: 04/14/2020] [Indexed: 11/25/2022] Open
Abstract
The physiological role of prolactin (PRL) in the heart, and in particular the diabetic heart, are largely unknown. The effects of PRL on ventricular myocyte shortening and Ca2+ transport in the streptozotocin (STZ) – induced diabetic and in age-matched control rats were investigated. PRL receptor protein, myocyte shortening, intracellular [Ca2+], L-type Ca2+ current were measured by Western blot, cell imaging, fluorescence photometry and whole-cell patch-clamp techniques, respectively. Compared to normal Tyrode solution (NT), PRL (50 ng/ml) significantly (p < 0.05) increased the amplitude of shortening in myocytes from control (7.43 ± 0.38 vs. 9.68 ± 0.46 %) and diabetic (6.57 ± 0.24 vs. 8.91 ± 0.44 %) heart (n = 44–49 cells). Compared to NT, PRL (50 ng/ml) significantly increased the amplitude of Ca2+ transients in myocytes from control (0.084 ± 0.004 vs. 0.115 ± 0.007 Fura-2 ratio units) and diabetic (0.087 ± 0.007 vs. 0.112 ± 0.006 Fura-2 ratio units) heart (n = 36–50 cells). PRL did not significantly alter the amplitude of caffeine-evoked Ca2+ transients however, PRL significantly increased the fractional release of Ca2+ in myocytes from control (21 %) and diabetic (14 %) and heart. The rate of Ca2+ transient recovery following PRL treatment was significantly increased in myocytes from diabetic and control heart. Amplitude of L-type Ca2+ current was not significantly altered by diabetes or by PRL. PRL increased the amplitude of shortening and Ca2+ transients in myocytes from control and diabetic heart. Increased fractional release of sarcoplasmic reticulum Ca2+ may partly underlie the positive inotropic effects of PRL in ventricular myocytes from control and STZ-induced diabetic rat.
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Affiliation(s)
- Frank C Howarth
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | | | - Oleksiy I Boldyriev
- Department of Neuromuscular Physiology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Muhammad A Qureshi
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Ozaz Mohamed
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Khatija Parekh
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Balaji Venkataraman
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Sandeep Subramanya
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Anatoliy Shmygol
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Lina T Al Kury
- Department of Health Sciences, College of Natural & Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
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103
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Lee M, Li H, Zhao H, Suo M, Liu D. Effects of Hydroxysafflor Yellow A on the PI3K/AKT Pathway and Apoptosis of Pancreatic β-Cells in Type 2 Diabetes Mellitus Rats. Diabetes Metab Syndr Obes 2020; 13:1097-1107. [PMID: 32308459 PMCID: PMC7154009 DOI: 10.2147/dmso.s246381] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/22/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND AIM Type 2 diabetes mellitus (T2DM), a complex metabolic disease, has become a major public health issue around the world. Hydroxysafflor yellow A (HSYA) is the major active chemical ingredient of Carthamus tinctorius L. (safflower), which is widely used in patients with cardiovascular and cerebrovascular diseases in China. The aim of this study was to investigate the anti-diabetic effect and potential mechanism of HSYA on the high-fat diet (HFD) and streptozotocin (STZ-)-induced T2DM rats. MATERIALS AND METHODS T2DM rats were induced by feeding HFD (60% fat) for four weeks followed by intraperitoneal injection of a low dose of streptozocin (35mg/kg). The T2DM rats were treated with HSYA (120mg/kg) or metformin (90mg/kg) for eight weeks. Biochemical analysis, histological analysis and Western blot analysis were conducted after 8 weeks of intervention. RESULTS The treatment with HSYA evidently reduced fasting-blood glucose and insulin resistance in T2DM rats, indicated by results from fasting-blood glucose, oral glucose tolerance test, fasting insulin levels and histology of pancreas islets. The Western blot results revealed that HSYA reversed the down-regulation of PI3K and AKT in liver. The TUNEL assay analysis of pancreatic tissue showed that HSYA could inhibit the apoptosis of pancreatic β-cells to a certain extent. Moreover, HSYA-treatment increased the levels of glycogen synthase and hepatic glycogen and improved lipid metabolism by reducing the triglyceride, total and low-density lipoprotein cholesterol levels, even though it did not change the rats' body weights. CONCLUSION The results of this study suggested that HSYA could promote PI3K/Akt activation and inhibit the apoptosis of pancreatic β-cells directly or indirectly, which might be the underlying mechanisms in HSYA to improve insulin resistance and regulate glycolipid metabolism in T2DM rats.
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Affiliation(s)
- Maosheng Lee
- The Fourth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou510006, People’s Republic of China
- Department of Endocrinology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen518033, People’s Republic of China
| | - Huilin Li
- Department of Endocrinology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen518033, People’s Republic of China
| | - Hengxia Zhao
- Department of Endocrinology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen518033, People’s Republic of China
| | - Miao Suo
- The Fourth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou510006, People’s Republic of China
- Department of Endocrinology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen518033, People’s Republic of China
| | - Deliang Liu
- Department of Endocrinology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen518033, People’s Republic of China
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104
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Indriawati R. The Hepatoprotective Capacity of Steeping kersen Leaves ( Muntingia calabura L.) on Diabetic Rat. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2020. [DOI: 10.29333/ejgm/7888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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105
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Urinary Metabolomics and Biochemical Analysis of Antihyperglycemic Effect of Ficus deltoidea Jack Varieties in Streptozotocin-Nicotinamide–Induced Diabetic Rats. Appl Biochem Biotechnol 2020; 192:1-21. [DOI: 10.1007/s12010-020-03304-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/12/2020] [Indexed: 01/01/2023]
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106
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Shetty R, Rai M, Chandrashekar R, Kalal BS. Diabetogenic effect of gluten in Wistar albino rats: a preliminary preclinical screening. Med Pharm Rep 2020; 93:47-52. [PMID: 32133446 PMCID: PMC7051816 DOI: 10.15386/mpr-1373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/27/2019] [Accepted: 07/29/2019] [Indexed: 12/11/2022] Open
Abstract
Background and aims Gluten-related disease affects less than 1% population and is not considered of relevance at the public health level. However, the consumption of a gluten-free diet has been most commonly adopted as a special diet worldwide in the recent past. In the present study, we investigated the association of gluten intake and diabetes in Wistar albino rats. Methods Thirty adult Wistar rats were randomly divided into five groups: control, diabetic, and test treated with pure gluten (100, 200 and 400 mg/kg body weight). Diabetes was induced in rats by intraperitoneal injection of Streptozotocin (65 mg/kg) after a dose of nicotinamide (110 mg/kg). Body weight, fasting blood glucose levels, postprandial blood glucose levels and histopathology of the pancreas were compared. Results Fasting blood glucose levels and postprandial blood glucose were significantly higher in diabetes animals but there were no significant changes in gluten treated groups. Other parameters were not significantly changed among different groups. Conclusions Gluten at doses 100 mg/kg, 200 mg/kg and 400 mg/kg is not a diabetogenic diet and hence it needs not be excluded from diet for the prevention and management of Type 2 diabetes mellitus.
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Affiliation(s)
- Robin Shetty
- Department of Pharmacology, A. J. Institute of Medical Sciences and Research Centre, Mangaluru-575004, Karnataka, India
| | - Mohandas Rai
- Department of Pharmacology, A. J. Institute of Medical Sciences and Research Centre, Mangaluru-575004, Karnataka, India
| | - Rajan Chandrashekar
- Department of Pharmacology, A. J. Institute of Medical Sciences and Research Centre, Mangaluru-575004, Karnataka, India
| | - Bhuvanesh Sukhlal Kalal
- A. J. Research Centre, A. J. Institute of Medical Sciences and Research Centre, Mangaluru-575004, Karnataka, India
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107
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Mata-Torres G, Andrade-Cetto A, Espinoza-Hernández FA, Cárdenas-Vázquez R. Hepatic Glucose Output Inhibition by Mexican Plants Used in the Treatment of Type 2 Diabetes. Front Pharmacol 2020; 11:215. [PMID: 32194426 PMCID: PMC7065531 DOI: 10.3389/fphar.2020.00215] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 02/14/2020] [Indexed: 11/21/2022] Open
Abstract
De novo hepatic glucose production or hepatic gluconeogenesis is the main contributor to hyperglycemia in the fasting state in patients with type 2 diabetes (T2D) owing to insulin resistance, which leads to at least twice as much glucose synthesis compared to healthy subjects. Therefore, control of this pathway is a promising target to avoid the chronic complications associated with elevated glucose levels. Patients with T2D in the rural communities of Mexico use medicinal plants prepared as infusions that are consumed over the day between meals, thus following this rationale (consumption of the infusions in the fasting state), one approach to understanding the possible mechanism of action of medicinal plants is to assess their capacity to inhibit hepatic glucose production. Furthermore, in several of these plants, the presence of phenolic acids able to block the enzyme glucose-6-phosphatase (G6Pase) is reported. In the present work, extracts of Ageratina petiolaris, Bromelia karatas, Equisetum myriochaetum, Rhizophora mangle, and Smilax moranensis, which are Mexican plants that have been traditionally used to treat T2D, were assayed to evaluate their possible hepatic glucose output (HGO) inhibitory activity with a pyruvate tolerance test in 18-h fasted STZ-NA Wistar rats after oral administration of the extracts. In addition, the in vitro effects of the extracts on the last HGO rate-limiting enzyme G6Pase was analyzed. Our results showed that four of these plants had an effect on hepatic glucose production in the in vivo or in vitro assays. A. petiolaris and R. mangle extracts decreased glucose output, preventing an increase in the blood glucose levels and sustaining this prevented increase after pyruvate administration. Moreover, both extracts inhibited the catalytic activity of the G6Pase complex. On the other hand, even though S. moranensis and B. karatas did not exhibit a significant in vivo effect, S. moranensis had the most potent inhibitory effect on this enzymatic system, while the E. myriochaetum extract only inhibited hepatic glucose production in the pyruvate tolerance test. Because of the traditional method in which diabetic patients use plants, hepatic glucose production inhibition seems to be a mechanism that partially explains the common hypoglycemic effect. However, further studies must be carried out to characterize other mechanisms whereby these plants can decrease HGO.
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Affiliation(s)
- Gerardo Mata-Torres
- Laboratorio de Etnofarmacología, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Adolfo Andrade-Cetto
- Laboratorio de Etnofarmacología, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - René Cárdenas-Vázquez
- Laboratorio de Biología Animal Experimental, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
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108
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Shih CK, Chen CM, Varga V, Shih LC, Chen PR, Lo SF, Shyur LF, Li SC. White sweet potato ameliorates hyperglycemia and regenerates pancreatic islets in diabetic mice. Food Nutr Res 2020; 64:3609. [PMID: 32425738 PMCID: PMC7217293 DOI: 10.29219/fnr.v64.3609] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 11/28/2019] [Accepted: 01/06/2020] [Indexed: 01/15/2023] Open
Abstract
Background White sweet potato (WSP) has many potential beneficial effects on metabolic control and on diabetes-related insulin resistance. The antihyperglycemic effects of Tainung No. 10 (TNG10), a variety of WSP in Taiwan, warrant investigation. Objective To investigate the antidiabetic activity of WSP (Ipomoea batatas L. TNG10) and the mechanisms for interventions using whole leaves or tubers of WSP in diabetic mice. Design Mice were co-administered with streptozotocin and nicotinamide to induce diabetes and then treated with an experimental diet including either 10% WSP tuber (10%-T) and 30% WSP tuber (30%-T) or 0.5% WSP leaf (0.5%-L) and 5% WSP leaf (5%-L). After 8 weeks’ treatment, their plasma glycemic parameters, lipid profiles, and inflammatory marker were analyzed. Their pancreases were removed for histopathologic image analysis; proteins were also extracted from their muscles for phosphoinositide 3-kinase pathway analysis. Results The 30%-T or 5%-L mice had lower plasma glucose, insulin, glucose area under the curve (AUC), homeostatic model assessment of insulin resistance (HOMA-IR), alanine transaminase, triglyceride, and tumor necrosis factor alpha levels. In all diabetic mice, their Langerhans’s area was reduced by 60%; however, after 30% WSP-T or 5% WSP-L diets, the mice demonstrated significant restoration of the Langerhans’s areas (approximately 30%). Only in 5%-L mice, slightly increased expression of insulin-signaling pathway-related proteins, phosphorylated insulin receptor and protein kinase B and membrane glucose transporter 4 was noted. Conclusions WSP has antihyperglycemic effects by inducing pancreatic islet regeneration and insulin resistance amelioration. Therefore, WSP has potential applications in dietary diabetes management.
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Affiliation(s)
- Chun-Kuang Shih
- School of Nutrition and Health Science, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Chiao-Ming Chen
- Department of Food Science, Nutrition, and Nutraceutical Biotechnology, Shih Chien University, Taipei, Taiwan
| | - Viola Varga
- School of Nutrition and Health Science, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Liang-Chen Shih
- School of Nutrition and Health Science, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Peng-Ru Chen
- Department of Food Science, Nutrition, and Nutraceutical Biotechnology, Shih Chien University, Taipei, Taiwan
| | - Shu-Fang Lo
- Department of Agronomy, Chiayi Agricultural Experiment Station, Taiwan Agricultural Research Institute, Chiayi, Taiwan
| | - Lie-Fen Shyur
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Sing-Chung Li
- School of Nutrition and Health Science, College of Nutrition, Taipei Medical University, Taipei, Taiwan
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Hussein MM, El-Belbasi HI, Morsy MA, Saadeldin IM, Alshammari GM. The synergistic effect of fenretinide and metformin to achieve a decrease in insulin resistance and inflammatory mediators: an in vivo study. ALL LIFE 2020. [DOI: 10.1080/26895293.2020.1732483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Mohamed M.A. Hussein
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Hussein I. El-Belbasi
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed A. Morsy
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Islam M. Saadeldin
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ghedeir M. Alshammari
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
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Zhang ZD, Ren H, Wang WX, Shen GY, Huang JJ, Zhan MQ, Tang JJ, Yu X, Zhang YZ, Liang D, Yang ZD, Jiang XB. IGF-1R/β-catenin signaling axis is involved in type 2 diabetic osteoporosis. J Zhejiang Univ Sci B 2020; 20:838-848. [PMID: 31489803 DOI: 10.1631/jzus.b1800648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Insulin-like growth factor-1 receptor (IGF-1R) is involved in both glucose and bone metabolism. IGF-1R signaling regulates the canonical Wnt/β-catenin signaling pathway. In this study, we investigated whether the IGF-1R/ β-catenin signaling axis plays a role in the pathogenesis of diabetic osteoporosis (DOP). Serum from patients with or without DOP was collected to measure the IGF-1R level using enzyme-linked immunosorbent assay (ELISA). Rats were given streptozotocin following a four-week high-fat diet induction (DOP group), or received vehicle after the same period of a normal diet (control group). Dual energy X-ray absorption, a biomechanics test, and hematoxylin-eosin (HE) staining were performed to evaluate bone mass, bone strength, and histomorphology, respectively, in vertebrae. Quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting were performed to measure the total and phosphorylation levels of IGF-1R, glycogen synthase kinase-3β (GSK-3β), and β-catenin. The serum IGF-1R level was much higher in patients with DOP than in controls. DOP rats exhibited strikingly reduced bone mass and attenuated compression strength of the vertebrae compared with the control group. HE staining showed that the histomorphology of DOP vertebrae was seriously impaired, which manifested as decreased and thinned trabeculae and increased lipid droplets within trabeculae. PCR analysis demonstrated that IGF-1R mRNA expression was significantly up-regulated, and western blotting detection showed that phosphorylation levels of IGF-1R, GSK-3β, and β-catenin were enhanced in DOP rat vertebrae. Our results suggest that the IGF-1R/β-catenin signaling axis plays a role in the pathogenesis of DOP. This may contribute to development of the underlying therapeutic target for DOP.
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Affiliation(s)
- Zhi-Da Zhang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Hui Ren
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Wei-Xi Wang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Geng-Yang Shen
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jin-Jing Huang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Mei-Qi Zhan
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jing-Jing Tang
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xiang Yu
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yu-Zhuo Zhang
- School of Basic Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - De Liang
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Zhi-Dong Yang
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xiao-Bing Jiang
- Department of Spinal Surgery, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China.,Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
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111
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Gong DJ, Wang L, Yang YY, Zhang JJ, Liu XH. Diabetes aggravates renal ischemia and reperfusion injury in rats by exacerbating oxidative stress, inflammation, and apoptosis. Ren Fail 2020; 41:750-761. [PMID: 31441362 PMCID: PMC6720228 DOI: 10.1080/0886022x.2019.1643737] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Diabetic patients are more susceptible to renal ischemia/reperfusion (I/R) injury (RI/RI) and have a poor prognosis, but the underlying mechanism remains unclear. The present study aimed to examine whether diabetes could worsen acute kidney injury induced by I/R in rats and clarify its mechanism. Control and streptozotocin-induced diabetic rats were subjected to 45 min renal pedicle occlusion followed by 24 h reperfusion. Tert-butylhydroquinone (TBHQ, 16.7 mg/kg) was administrated intraperitoneally 3 times at intervals of 8 h before ischemia. Serum and kidneys were harvested after reperfusion to evaluate renal function and histological injury. Enzyme-linked immunosorbent assays were used to test pro-inflammatory cytokines. Terminal deoxynucleotidyl-transferase-mediated dUTP nick-end labeling assays were used to detect apoptotic cells, and western blotting was performed to determine the expression of B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax), and cleaved caspase-3, as well as oxidative stress and inflammation-related proteins, such as nuclear factor-erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), Toll-like receptor 4 (TLR4), and nuclear factor-κB (NF-κB). Compared with control animals, diabetic rats undergoing I/R exhibited more severe tubular damage and renal dysfunction. Diabetes exacerbated oxidative stress, the inflammatory response, and apoptosis after renal I/R by enhancing TLR4/NF-κB signaling and blocking the Nrf2/HO-1 pathway. RI/RI in diabetic rats was attenuated by pretreatment with TBHQ (a Nrf2 agonist), which exerted anti-inflammatory and anti-apoptotic properties by inhibiting NF-κB signaling. These findings indicate that hyperglycemia exacerbates RI/RI by intensifying oxidative stress, inflammation, and apoptosis. Antioxidant pretreatment may alleviate RI/RI in diabetic patients.
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Affiliation(s)
- Dao-Jing Gong
- Department of Urology, Renmin Hospital of Wuhan University , Wuhan , Hubei , P.R. China
| | - Lei Wang
- Department of Urology, Renmin Hospital of Wuhan University , Wuhan , Hubei , P.R. China
| | - Yuan-Yuan Yang
- Department of Urology, Renmin Hospital of Wuhan University , Wuhan , Hubei , P.R. China
| | - Jian-Jian Zhang
- Department of Urology, Renmin Hospital of Wuhan University , Wuhan , Hubei , P.R. China
| | - Xiu-Heng Liu
- Department of Urology, Renmin Hospital of Wuhan University , Wuhan , Hubei , P.R. China
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Combined administration of exogenous melatonin and insulin ameliorates streptozotocin induced toxic alteration on hematological parameters in diabetic male Wistar rats. Toxicol Rep 2020; 7:353-359. [PMID: 32095432 PMCID: PMC7033445 DOI: 10.1016/j.toxrep.2020.01.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 12/31/2019] [Accepted: 01/29/2020] [Indexed: 02/06/2023] Open
Abstract
The aim of the present was to ameliorate the protective effect of exogenous melatonin and insulin against the diabetes induced alterations in the different hematological variables. Albino rats were administrated streptozotocin at the dose of 15 mg/kg for 6 days. Total 54 rats were randomly selected for the experimental purpose and were divided into two major groups. Group-1 consisting twenty four (24) and were further sub-divided into four (4) different groups viz. group-I served as normal control, group-II served as melatonin treated, group-III served as insulin treated and group-IV served as glibenclamide treated. Group-2 consisting thirty (30) rats were given streptozotocin (STZ) injection (15 mg/kg) for 6 days. After confirmation of diabetes by measuring blood glucose level, animals having blood glucose level above 250 mg/dl) confirmed as diabetic. Thirty (30) Diabetic rats were further subdivided into following sub-groups and were given different therapeutic treatments, Viz group-I served as Diabetic control, group-II treated with melatonin, group-III treated with insulin, group-IV given treatment of melatonin and insulin and group-V were given treatment of glibenclamide respectively. Diabetic rats showed modulation in all the studied hematological variables. Diabetic rats displayed significant decline in RBCs count, HB level and its associated indices (HCT, RDW, MCV, MCH, MCHC), WBCs and its related indices (polymorphs and lymphocytes) and platelet distribution width (PDW %) whereas platelet count showed significant increase. Nonetheless alone as well as combined treatment of exogenous melatonin and insulin restored all altered hematological parameters. However, significant recovery was found in the group in which combined dose of melatonin and insulin was administrated. Therefore, it might be concluded that combined administration of melatonin and insulin will be better remedy to normalize the altered blood profile during the diabetic condition.
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Abdel-Rahman RF, Ezzat SM, Ogaly HA, Abd-Elsalam RM, Hessin AF, Fekry MI, Mansour DF, Mohamed SO. Ficus deltoidea extract down-regulates protein tyrosine phosphatase 1B expression in a rat model of type 2 diabetes mellitus: a new insight into its antidiabetic mechanism. J Nutr Sci 2020; 9:e2. [PMID: 32042410 PMCID: PMC6984126 DOI: 10.1017/jns.2019.40] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 11/29/2019] [Accepted: 12/03/2019] [Indexed: 12/14/2022] Open
Abstract
Ficus deltoidea var. deltoidea Jack (FD) is a well-known plant used in Malay folklore medicine to lower blood glucose in diabetic patients. For further research of the antihyperglycemic mechanisms, the protein tyrosine phosphatase 1B (PTP1B)-inhibitory effect of FD was analysed both in vitro and in vivo. To optimise a method for FD extraction, water, 50, 70, 80, 90 and 95 % ethanol extracts were prepared and determined for their total phenolic and triterpene contents, and PTP1B-inhibition capacity. Among the tested extracts, 70 % ethanol FD extract showed a significant PTP1B inhibition (92·0 % inhibition at 200 µg/ml) and high phenolic and triterpene contents. A bioassay-guided fractionation of the 70 % ethanol extract led to the isolation of a new triterpene (3β,11β-dihydroxyolean-12-en-23-oic acid; F3) along with six known compounds. In vivo, 4 weeks' administration of 70 % ethanol FD extract (125, 250 and 500 mg/kg/d) to streptozotocin-nicotinamide-induced type 2 diabetic rats reversed the abnormal changes of blood glucose, insulin, total Hb, GLUT2, lipid profile, and oxidative stress in liver and pancreas. Moreover, FD reduced the mRNA expression of the key gluconeogenic enzymes (phosphoenolpyruvate carboxykinase and glucose 6-phosphatase) and restored insulin receptor and GLUT2 encoding gene (Slc2a2) expression. In addition, FD significantly down-regulated the hepatic PTP1B gene expression. These results revealed that FD could potentially improve insulin sensitivity, suppress hepatic glucose output and enhance glucose uptake in type 2 diabetes mellitus through down-regulation of PTP1B. Together, our findings give scientific evidence for the traditional use of FD as an antidiabetic agent.
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Key Words
- CAT, catalase
- Dihydroxyolean-12-en-23-oic acid
- FBG, fasting blood glucose
- FD, Ficus deltoidea var. deltoidea Jack
- Ficus deltoidea
- G6Pase, glucose 6-phosphatase
- GPx, glutathione peroxidase
- GSH, reduced glutathione
- Glucose 6-phosphatase
- Glucose transporter-2
- MDA, malondialdehyde
- MET, metformin
- NA, nicotinamide
- PEPCK, phosphoenolpyruvate carboxykinase
- PTP, protein tyrosine phosphatase
- Phosphoenolpyruvate carboxykinase
- Protein tyrosine phosphatase 1B
- SOD, superoxide dismutase
- STZ, streptozotocin
- Slc2a2, GLUT2 gene
- T2DM, type 2 diabetes mellitus
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Affiliation(s)
| | - Shahira M. Ezzat
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Einy Street, Cairo11562, Egypt
- Pharmacognosy Department, Faculty of Pharmacy, October University for Modern Sciences and Arts, 6th October Campus, 12566, Egypt
| | - Hanan A. Ogaly
- Chemistry Department, College of Science, King Khalid University, Abha, Saudi Arabia
- Biochemistry Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Reham M. Abd-Elsalam
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Alyaa F. Hessin
- Pharmacology Department, National Research Centre, Giza, Egypt
- Microbiology and Immunology Department, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Mostafa I. Fekry
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Einy Street, Cairo11562, Egypt
| | - Dina F. Mansour
- Pharmacology Department, National Research Centre, Giza, Egypt
| | - Shanaz O. Mohamed
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
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Long G, Liu D, He X, Shen Y, Zhao Y, Hou X, Chen B, OuYang W, Dai J, Li X. A dual functional collagen scaffold coordinates angiogenesis and inflammation for diabetic wound healing. Biomater Sci 2020; 8:6337-6349. [PMID: 33025970 DOI: 10.1039/d0bm00999g] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Chronic diabetic wounds, which are associated with persistent inflammation and impaired angiogenesis, occur frequently in diabetic patients.
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Shekunova EV, Kashkin VA, Muzhikyan AА, Makarova MN, Balabanyan VY, Makarov VG. Therapeutic efficacy of arginine-rich exenatide on diabetic neuropathy in rats. Eur J Pharmacol 2019; 866:172835. [PMID: 31794708 DOI: 10.1016/j.ejphar.2019.172835] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 11/25/2019] [Accepted: 11/29/2019] [Indexed: 01/15/2023]
Abstract
Diabetes mellitus is characterized by metabolic dysregulation associated with a number of health complications. More than 50% of patients with diabetes mellitus suffer from diabetic polyneuropathy, which involves the presence of peripheral nerve dysfunction symptoms. The aim of this study was to evaluate the potential of a new synthetic arginine-rich exendin-4 (Peptide D) in the treatment of complications caused by diabetes, including peripheral neuropathy, in rats. Diabetes was induced by administering streptozotocin (STZ). Three groups of diabetic rats were treated with Peptide D (0.1, 1, and 10 μg/kg). One group of diabetic rats was treated with Byetta® (1 μg/kg) for 80 days. Neuropathic pain development was assessed by tactile allodynia. STZ-treated rats showed an increased level of tactile allodynia unlike naïve animals. A histological study revealed that the diameter of the sciatic nerve fibers in STZ-treated rats was smaller than that of the naïve animals. An IHC study demonstrated decreased expression of myelin basic protein (MBP) in the sciatic nerve of diabetic rats compared to that in the naïve animals. Peptide D reduced the severity of tactile allodynia. This effect was more pronounced in the Peptide D treated groups than in the group treated with Byetta®. Peptide D and Byetta® treatment resulted in increased MBP expression in the sciatic nerve and increased diameter of myelinated nerve fibers. These findings suggest that poly-arginine peptides are promising agents for the treatment of peripheral polyneuropathies.
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Affiliation(s)
- Elena V Shekunova
- RMC "HOME OF PHARMACY", The Leningrad Region, Vsevolozhskiy District, 188663, Russia
| | - Vladimir A Kashkin
- Valdman Institute of Pharmacology, First Pavlov State Medical University, St.-Petersburg, 197022, Russia; Sechenov Institute of Evolutionary Physiology and Biochemistry, St. Petersburg, 194223, Russia.
| | - Arman А Muzhikyan
- Smorodintsev Research Institute of Influenza, St. Petersburg, 197376, Russia; Konstantinov Institute of Nuclear Physics, The Leningrad Region, Gatchina, 188300, Russia
| | - Marina N Makarova
- RMC "HOME OF PHARMACY", The Leningrad Region, Vsevolozhskiy District, 188663, Russia
| | - Vadim Y Balabanyan
- Faculty of Fundamental Medicine of Lomonosov Moscow State University, Moscow, 119192, Russia
| | - Valery G Makarov
- RMC "HOME OF PHARMACY", The Leningrad Region, Vsevolozhskiy District, 188663, Russia
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Surbakti C, Sitorus P, Rosidah, Satria D. Effect of Saurauia vulcani Korth. Leaves on Superoxide Dismutase, HbA1c Levels and Insulin Expression in Hyperglycemic Rats. Open Access Maced J Med Sci 2019; 7:3741-3744. [PMID: 32127966 PMCID: PMC7048358 DOI: 10.3889/oamjms.2019.494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 11/28/2022] Open
Abstract
AIM: This study aimed to investigate Saurauia vulcani Korth. leaves. the activity of ethanol extract in hypoglycemic, superoxide dismutase (SOD), glycosylated haemoglobin (HbA1c) and detection of insulin expression by immunochemistry METHODS: Saurauia vulcani Korth. Leaves powder was extracted by maceration method with ethanol 96%. The extract was administrated orally in doses of 100 mg/kg BW for 27 days. Diabetes was induced in rats by administered of Nicotinamide (NA) 230 mg/kg BW and streptozotocin (STZ) 65 mg/kg BW. Level of blood glucose, SOD, HbA1c were measured, and histopathology pancreas was observed to determine insulin expression with immunochemistry RESULTS: Ethanol extract of Saurauia vulcani Korth. Leaves (EESL) shown a significantly (*p < 0.05) reduced in blood glucose levels at 104.25 ± 2.562 mg/dL and HbA1c level at 32.53 ± 0.188 ng/mL, but increased SOD level at 60.64 ± 0.740 pg/mL and histopathology study shown secretion insulin as seen number of expressions of insulin / slice 31.00 ± 0.315. CONCLUSION: The result of this study showed EESL possess the hypoglycemic activity and increase the level of SOD but decrease the level of HbA1c in diabetic rat condition. The mechanism of the activity is suggested by stimulating the insulin secretion of pancreas β-cells which were damaged.
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Affiliation(s)
- Chemayanti Surbakti
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Panal Sitorus
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Rosidah
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Denny Satria
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
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The relevance of AMP-activated protein kinase in insulin-secreting β cells: a potential target for improving β cell function? J Physiol Biochem 2019; 75:423-432. [PMID: 31691163 PMCID: PMC6920233 DOI: 10.1007/s13105-019-00706-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 09/13/2019] [Indexed: 12/12/2022]
Abstract
AMP-activated protein kinase (AMPK) is present in different kinds of metabolically active cells. AMPK is an important intracellular energy sensor and plays a relevant role in whole-body energy homeostasis. AMPK is activated, among others, in response to glucose deprivation, caloric restriction and increased physical activity. Upon activation, AMPK affects metabolic pathways leading to increased formation of ATP and simultaneously reducing ATP-consuming processes. AMPK is also expressed in pancreatic β cells and is largely regulated by glucose, which is the main physiological stimulator of insulin secretion. Results of in vitro studies clearly show that glucose-induced insulin release is associated with a concomitant inhibition of AMPK in β cells. However, pharmacological activation of AMPK significantly potentiates the insulin-secretory response of β cells to glucose and to some other stimuli. This effect is primarily due to increased intracellular calcium concentrations. AMPK is also involved in the regulation of gene expression and may protect β cells against glucolipotoxic conditions. It was shown that in pancreatic islets of humans with type 2 diabetes, AMPK is downregulated. Moreover, studies with animal models demonstrated impaired link between glucose and AMPK activity in pancreatic islet cells. These data suggest that AMPK may be a target for compounds improving the functionality of β cells. However, more studies are required to better elucidate the relevance of AMPK in the (patho)physiology of the insulin-secreting cells.
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Gholizadeh F, Dastghaib S, Koohpeyma F, Bayat E, Mokarram P. The protective effect of Stevia rebaudiana Bertoni on serum hormone levels, key steroidogenesis enzymes, and testicular damage in testes of diabetic rats. Acta Histochem 2019; 121:833-840. [PMID: 31420111 DOI: 10.1016/j.acthis.2019.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/07/2019] [Accepted: 08/07/2019] [Indexed: 01/01/2023]
Abstract
Diabetes Mellitus (DM) is a kind of metabolic endocrine diseases, which has various effects on the gonadal system. The current study aimed to examine the effect of Stevia rebaudiana Bertoni extract on the mRNA expression involved in testosterone synthesis, and stereological parameters in rat testes, for improving diabetes complications. In this study, 48 rats were randomly classified into control, diabetic (streptozocin 60 mg/kg + nicotinamide 120 mg/kg), diabetic + Stevia (400 mg/kg), and diabetic + metformin (500 mg/kg) groups. Finally, Fasting Blood Sugar (FBS) level, the serum level of LH and testosterone, the Star, Cyp11a1, and Hsd17b3 gene expressions, and changes in the testis histology were evaluated. The results indicated a decrease in body weight, serum LH and testosterone level, the star gene expression, stereological changes of testes, and an increase in the FBS level in diabetic group, compared with the control group (P<0.05). Nonetheless, Stevia significantly reduced the FBS and increased the serum LH level, in comparison with diabetic rats (P<0.05), but no significant differences in the serum testosterone level and the Star gene expression has been found. Stevia also resulted in an increase in weight, testis volume, the number of sexual lineage cells, and sperm count and motility, compared to diabetic rats (P<0.05). Due to its antioxidant properties, Stevia enhanced the alteration in spermatogenesis and stereological characteristics in diabetic rat testes. Hence, Stevia could diminish the reproductive system problems and improve infertility in diabetic male rats.
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Ahmad Hajam Y, Rai S, Basheer M, Ghosh H, Singh S. Protective Role of Melatonin in Streptozotocin Induced Pancreatic Damages in Diabetic Wistar Rat. Pak J Biol Sci 2019; 21:423-431. [PMID: 30724043 DOI: 10.3923/pjbs.2018.423.431] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Hyperglycemia is a representative hallmark and risk factor for diabetes and is closely linked to diabetes associated complications. The aim of the present study was to evaluate the therapeutic potential of exogenous melatonin against the streptozotocin induced pancreatic damages in rats. MATERIALS AND METHODS Streptozotocin was injected for consecutive 6 days. Diabetes was confirmed by blood glucose measurement after 72 h and on 7th day after injection. Animals having blood glucose level above 250 mg dL-1 were considered as diabetic and were administered exogenous melatonin for 4 weeks. Animals were euthanized after last dose, pancreas were dissected out, weighed and fixed in Bouin's fixative for histology and further tissues were kept at -20°C for biochemistry. RESULTS Diabetic rats displayed significant increase in lipid peroxidation, but pancreatic weight index, antioxidant system (GSH, SOD and CAT) showed decrease. Melatonin treatment to diabetic rats restored the alteration in physiological and biochemical markers. Results were supported by the histopathological observations, STZ treated pancreas showed damage in islets of langerhans, while as melatonin treated diabetic rats recovered the cellular architecture which inturn normalize the function of the pancreas. CONCLUSION Therefore, melatonin might be considered as a molecule to protect the pancreatic damages.
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120
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Differences between normal and diabetic brains in middle-aged rats by MRI. Brain Res 2019; 1724:146407. [PMID: 31465773 DOI: 10.1016/j.brainres.2019.146407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/23/2019] [Accepted: 08/24/2019] [Indexed: 01/01/2023]
Abstract
Normal aging is a risk factor for metabolic disorders such as diabetes, and diabetes is also a recognized cause of accelerated aging. Being able to distinguish changes caused by normal aging from those caused by diabetes, would provide insight into how the aging brain interacts with diabetes. Eight types of MRI metric maps (magnetization relaxation time constants of T1 and T2, cerebral blood flow, cerebrovascular permeability, mean diffusivity, diffusion fractional anisotropy, mean diffusion kurtosis and diffusion directional entropy) were generated for all rats from the three groups of normal young, healthy and 1.5-month diabetic middle-aged rats under investigation. Measurements of multiple MRI indices of cerebral white and gray matter from animals of the three groups provide complementary results and insight into differences between healthy and diabetic white / gray matter in the mid-aged rats. Our data indicate that MRI may distinguish between the normal and diabetes in mid-aged rat brains by measuring either T1 and T2 of gray matter, or fractional anisotropy of white matter and gray matter. Therefore, MRI can distinguish changes of cerebral tissue due to the normal aging from diabetic aging, which may lead to be able to better understand how diabetes accelerates aging in normal brain.
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121
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Gómez-de Frutos MC, Laso-García F, Diekhorst L, Otero-Ortega L, Fuentes B, Jolkkonen J, Detante O, Moisan A, Martínez-Arroyo A, Díez-Tejedor E, Gutiérrez-Fernández M. Intravenous delivery of adipose tissue-derived mesenchymal stem cells improves brain repair in hyperglycemic stroke rats. Stem Cell Res Ther 2019; 10:212. [PMID: 31315686 PMCID: PMC6637493 DOI: 10.1186/s13287-019-1322-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/14/2019] [Accepted: 07/02/2019] [Indexed: 12/11/2022] Open
Abstract
Background Over 50% of acute stroke patients have hyperglycemia, which is associated with a poorer prognosis and outcome. Our aim was to investigate the impact of hyperglycemia on behavioral recovery and brain repair of delivered human adipose tissue-derived mesenchymal stem cells (hAD-MSCs) in a rat model of permanent middle cerebral artery occlusion (pMCAO). Methods Hyperglycemia was induced in rats by the administration of nicotinamide and streptozotocin. The rats were then subjected to stroke by a pMCAO model. At 48 h post-stroke, 1 × 106 hAD-MSCs or saline were intravenously administered. We evaluated behavioral outcome, infarct size by MRI, and brain plasticity markers by immunohistochemistry (glial fibrillary acidic protein [GFAP], Iba-1, synaptophysin, doublecortin, CD-31, collagen-IV, and α-smooth muscle actin [α-SMA]). Results The hyperglycemic group exhibited more severe neurological deficits; lesion size and diffusion coefficient were larger compared with the non-hyperglycemic rats. GFAP, Iba-1, and α-SMA were increased in the hyperglycemic group. The hyperglycemic rats administered hAD-MSCs at 48 h after pMCAO had improved neurological impairment. Although T2-MRI did not show differences in lesion size between groups, the rADC values were lower in the treated group. Finally, the levels of GFAP, Iba-1, and arterial wall thickness were lower in the treated hyperglycemic group than in the nontreated hyperglycemic group at 6 weeks post-stroke. Conclusions Our data suggest that rats with hyperglycemic ischemic stroke exhibit increased lesion size and impaired brain repair processes, which lead to impairments in behavioral recovery after pMCAO. More importantly, hAD-MSC administration induced better anatomical tissue preservation, associated with a good behavioral outcome. Electronic supplementary material The online version of this article (10.1186/s13287-019-1322-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mari Carmen Gómez-de Frutos
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Fernando Laso-García
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Luke Diekhorst
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Laura Otero-Ortega
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Blanca Fuentes
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Jukka Jolkkonen
- Department of Neurology, University of Eastern Finland, Kuopio, Finland.,NeuroCenter, Kuopio University Hospital, Kuopio, Finland
| | - Olivier Detante
- Neurology Department, Stroke Unit, Grenoble Hospital, Grenoble, France.,Grenoble Institute of Neurosciences, Inserm U1216, Grenoble Alpes University, Grenoble, France
| | - Anaick Moisan
- Grenoble Institute of Neurosciences, Inserm U1216, Grenoble Alpes University, Grenoble, France.,Cell Therapy and Engineering Unit, EFS Auvergne Rhône Alpes, Saint-Ismier, France
| | - Arturo Martínez-Arroyo
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Exuperio Díez-Tejedor
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - María Gutiérrez-Fernández
- Department of Neurology and Stroke Center, Neuroscience and Cerebrovascular Research Laboratory, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Paseo de la Castellana 261, 28046, Madrid, Spain.
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Phatak RS, Khanwelkar CC, Matule SM, Datkhile KD, Hendre AS. Antihyperglycemic Activity of Murraya koenigii Leaves Extract on Blood Sugar Level in Streptozotocin-Nicotinamide Induced Diabetes in Rats. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/bpj/1679] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effects of Murraya koenigii leaves are very less studied in streptozotocin-nicotinamide (STZ-NA) induced diabetes rat model, in spite of several studies reported its antidiabetic effects in alloxan and STZ induced diabetes. The present study was undertaken to assess the effects of Murraya koenigii leaves extract on the blood sugar level (BSL) of STZ-NA diabetic rats. Experimental diabetes was induced by STZ injection intraperitoneally (i. p) after 30 min of NA injection i. p in all groups apart from normal control group. Group I (normal control) and Group II (diabetic control) rats received distilled water. Group III rats treated Metformin, Group IV and Group V rats treated Murraya koenigii aqueous extract and Murraya koenigii methanolic extract respectively. BSL and body weights of rats were measured at each week of the period of 28 days. Our results indicate that oral administration of Murraya koenigii reduces BSL significantly compared with the diabetic group. No weight loss was observed in all groups. The findings of the present study suggest that Murraya koenigii is proven as anti-diabetic agent in diabetic rats.
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Affiliation(s)
- Rohan S. Phatak
- Department of Pharmacology, Krishna Institute of Medical Sciences, Karad-415110, Maharashtra, India
| | - Chitra C. Khanwelkar
- Department of Pharmacology, Krishna Institute of Medical Sciences, Karad-415110, Maharashtra, India
| | - Somnath M. Matule
- Department of Pharmacology, Krishna Institute of Medical Sciences, Karad-415110, Maharashtra, India
| | - Kailas D. Datkhile
- Department of Molecular Biology and Genetics, Krishna Institute of Medical Sciences, Karad-415110, Maharashtra, India
| | - Anup S. Hendre
- Department of Biochemistry, Krishna Institute of Medical Sciences, Karad-415110, Maharashtra, India
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Bahmanzadeh M, Goodarzi MT, Rezaei Farimani A, Fathi N, Alizadeh Z. Resveratrol supplementation improves DNA integrity and sperm parameters in streptozotocin–nicotinamide‐induced type 2 diabetic rats. Andrologia 2019; 51:e13313. [DOI: 10.1111/and.13313] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 04/07/2019] [Accepted: 04/17/2019] [Indexed: 12/14/2022] Open
Affiliation(s)
- Maryam Bahmanzadeh
- Endometrium and Endometriosis Research Center Hamadan University of Medical Sciences Hamadan Iran
- Department of Anatomical sciences, School of medicine Hamadan University of Medical Sciences Hamadan Iran
| | | | - Azam Rezaei Farimani
- Department of Basic Medical Sciences Neyshabur University of Medical Sciences Neyshabur Iran
| | - Nasibeh Fathi
- Department of Anatomical sciences, School of medicine Hamadan University of Medical Sciences Hamadan Iran
| | - Zohreh Alizadeh
- Endometrium and Endometriosis Research Center Hamadan University of Medical Sciences Hamadan Iran
- Department of Anatomical sciences, School of medicine Hamadan University of Medical Sciences Hamadan Iran
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Rodrigues L, Wartchow KM, Suardi LZ, Federhen BC, Selistre NG, Gonçalves CA. Streptozotocin causes acute responses on hippocampal S100B and BDNF proteins linked to glucose metabolism alterations. Neurochem Int 2019; 128:85-93. [PMID: 31009650 DOI: 10.1016/j.neuint.2019.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/12/2019] [Accepted: 04/19/2019] [Indexed: 02/07/2023]
Abstract
Streptozotocin (STZ) is a glucosamine-nitrosourea commonly used to induce long-lasting models of diabetes mellitus and Alzheimer's disease. Direct toxicity of STZ on the pancreas and kidneys has been well characterized, but the acute effect of this compound on brain tissue has received less attention. Herein, we investigated the acute and direct toxicity of STZ on fresh hippocampal slices, measuring changes in BDNF and S100B secretion (two widely-used peripheral markers of brain injury), as well as glucose metabolism. Moreover, we investigated in vivo changes of these proteins in the hippocampus, 48 h after intracerebroventricular STZ administration. Transverse hippocampal slices (0.3 mm thick) were obtained using a McIlwain tissue chopper and target proteins were measured in the incubation medium by ELISA. STZ decreased S100B secretion, but increased BDNF secretion as well as causing impairment in glucose uptake in hippocampal slices, measured using [3H] deoxy-glucose. Glucose levels and glucose metabolism differentially modulated S100B secretion in astrocytes and BDNF secretion in neurons, when evaluated under specific conditions (high-potassium medium, presence of tetrodotoxin or fluorocitrate). Moreover, at 48 h after intracerebroventricular STZ, hippocampal BDNF content, but not S100B, was reduced. Our results indicate that BDNF and S100B are useful and sensitive markers of glucose metabolism disturbance and reinforce these proteins as general acute markers of brain disorders.
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Affiliation(s)
- Leticia Rodrigues
- Department of Biochemistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Krista Minéia Wartchow
- Department of Biochemistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Lucas Zingano Suardi
- Department of Biochemistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Laso-García F, Diekhorst L, Gómez-de Frutos MC, Otero-Ortega L, Fuentes B, Ruiz-Ares G, Díez-Tejedor E, Gutiérrez-Fernández M. Cell-Based Therapies for Stroke: Promising Solution or Dead End? Mesenchymal Stem Cells and Comorbidities in Preclinical Stroke Research. Front Neurol 2019; 10:332. [PMID: 31024426 PMCID: PMC6467162 DOI: 10.3389/fneur.2019.00332] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/19/2019] [Indexed: 01/11/2023] Open
Abstract
Stroke is a major health problem worldwide. It has been estimated that 90% of the population attributable risk of stroke is due to risk factors such as aging, hypertension, hyperglycemia, diabetes mellitus and obesity, among others. However, most animal models of stroke use predominantly healthy and young animals. These models ignore the main comorbidities associated with cerebrovascular disease, which could be one explanation for the unsuccessful bench-to-bedside translation of protective and regenerative strategies by not taking the patient's situation into account. This lack of success makes it important to incorporate comorbidities into animal models of stroke in order to study the effects of the various therapeutic strategies tested. Regarding cell therapy, the administration of stem cells in the acute and chronic phases has been shown to be safe and effective in experimental animal models of stroke. This review aims to show the results of studies with promising new therapeutic strategies such as mesenchymal stem cells, which are being tested in preclinical models of stroke associated with comorbidities and in elderly animals.
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Affiliation(s)
- Fernando Laso-García
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Luke Diekhorst
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Mari Carmen Gómez-de Frutos
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Laura Otero-Ortega
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Blanca Fuentes
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Gerardo Ruiz-Ares
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - Exuperio Díez-Tejedor
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
| | - María Gutiérrez-Fernández
- Neuroscience and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Autonoma University of Madrid, Madrid, Spain
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Johnson A, Cheng SC, Tsou D, Kong ZL. Attenuation of reproductive dysfunction in diabetic male rats with timber cultured Antrodia cinnamomea ethanol extract. Biomed Pharmacother 2019; 112:108684. [DOI: 10.1016/j.biopha.2019.108684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/28/2019] [Accepted: 02/12/2019] [Indexed: 12/21/2022] Open
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Tse LS, Liao PL, Tsai CH, Li CH, Liao JW, Kang JJ, Cheng YW. Glycemia Lowering Effect of an Aqueous Extract of Hedychium coronarium Leaves in Diabetic Rodent Models. Nutrients 2019; 11:nu11030629. [PMID: 30875840 PMCID: PMC6470712 DOI: 10.3390/nu11030629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/07/2019] [Accepted: 03/11/2019] [Indexed: 12/22/2022] Open
Abstract
Hedychium coronarium has a long history of use worldwide as a food and in folk medicine. In this study, we aimed to investigate the effect of an aqueous extract of H. coronarium leaves (HC) on type 2 diabetes mellitus (T2DM). Two types of animal models were used in this study: Streptozotocin (STZ)-induced T2DM (Wistar rats; N = 8) and C57BKSdb/db mice (N = 5). After treatment with HC for 28 days, glucose tolerance improved in both of the diabetic animal models. As significant effects were shown after 14 days of treatment in the STZ-induced T2DM model, we carried out the experiments with it. After 28 days of treatment with HC, the levels of cholesterol, triglyceride, high-density lipoprotein, and low-density lipoprotein were significantly improved in the STZ-induced T2DM model. The lesions degree of islet β-cells was decreased after the HC treatment. Although the insulin level increased moderately, the aldosterone level was significantly decreased in the HC-treated groups, suggesting that aldosterone might play an important role in this effect. In summary, HC is a natural product and it is worth exploring its effect on T2DM.
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Affiliation(s)
- Ling-Shan Tse
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan.
| | - Po-Lin Liao
- Institute of Food Safety and Health Risk Assessment, School of Pharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan.
| | - Chi-Hao Tsai
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan.
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taiwan.
| | - Ching-Hao Li
- Department of Physiology, School of Medicine, Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110, Taiwan.
| | - Jiunn-Wang Liao
- Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, Taichung 402, Taiwan.
| | - Jaw-Jou Kang
- Institute of Food Safety and Health Risk Assessment, School of Pharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan.
| | - Yu-Wen Cheng
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan.
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Activation of PERK-eIF2α-ATF4 pathway contributes to diabetic hepatotoxicity: Attenuation of ER stress by Morin. Cell Signal 2019; 59:41-52. [PMID: 30877037 DOI: 10.1016/j.cellsig.2019.03.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/22/2019] [Accepted: 03/06/2019] [Indexed: 01/12/2023]
Abstract
Hyperglycemia associated ER stress has been found as a critical contributor in the pathogenesis of type 2 diabetes mellitus. However, reports regarding molecular mechanisms involved are limited. This study was aimed to identify the role of ER stress in regulating hepatic glucose metabolism and its link with oxidative stress. Further, this study explores the novel role of Morin, a flavonol, in modulating ER stress in STZ/nicotinamide induced type 2 diabetic male Wistar rats. Results demonstrate that hyperglycemia induced ER stress in rats and significantly lowered the expression of glucose transporter proteins resulting in impaired glucose metabolism during diabetes. Morin was found to downregulate PERK-eIF2α-ATF4 pathway by interacting with PERK protein as confirmed through pull-down assay. Additionally, Morin maintained the reducing environment in ER and enhanced PDI activity compared to diabetic rats. Morin prevented cell death by suppressing the expression of PERK dependent pro-apoptotic proteins including ATF4 and CHOP. Findings from this study affirm the role of ER stress in hyperglycemia induced gluco-metabolic aberrations and liver injury as confirmed by ISRIB, a standard chemical ER stress inhibitor. Notably, Morin promoted deactivation of UPR sensors and upregulated PDI activity endorsing its anti-ER stress potential which may allow the development of new therapeutic avenues to target hyperglycemic hepatotoxicity.
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129
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Kajal A, Singh R. Coriandrum sativum seeds extract mitigate progression of diabetic nephropathy in experimental rats via AGEs inhibition. PLoS One 2019; 14:e0213147. [PMID: 30845182 PMCID: PMC6405108 DOI: 10.1371/journal.pone.0213147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 02/17/2019] [Indexed: 01/07/2023] Open
Abstract
Inthe present study, we have demonstrated the phytochemical composition of petroleum ether extract of C. sativum (CPE) seeds by using chromatographic, spectroscopic as well spectrometric analysis. CPE was evaluated for its possible role in mitigation of diabetic nephropathy (DN) in Streptozotocin (STZ)-nicotinamide (NAD) induced type 2 diabetes model. Administration of CPE at doses of 100, 200, and 400 mg/kg for 45 days has produced significant attenuation of elevated biochemical parameters including serum glucose, lipid and creatinine levels. CPE has also reserved albuminuria and elevated creatinine clearance in treated diabetic rats. Advanced glycation end products (AGEs) formation in kidneyswas also considerably reduced along with noteworthy increase in level of superoxide dismutase (SOD), glutathione (GSH), and decrease in lipid peroxidation in terms of thiobarbituric acid reactive species (TBARS). Molecular docking studies were also employed to reveal out the possible mechanism. In conclusion, using STZ-NAD model, we have successfully predicted that by assets of bioactive constituents CPE might inhibit the progression of DN. C. sativum may act as potential adjuvant for antidiabetic therapy and needs to be investigated further.
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Affiliation(s)
- Anu Kajal
- M. M College of Pharmacy, M. M (Deemed to be University), Mullana, Ambala, Haryana, India
| | - Randhir Singh
- M. M College of Pharmacy, M. M (Deemed to be University), Mullana, Ambala, Haryana, India
- * E-mail:
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130
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Deshpande AS, Ramireddy S, Sudandiradoss C, Noor A, Sen P. Streptozocin; a GLUT2 binding drug, interacts with human serum albumin at loci h6 DOM3-h7 DOM3. Int J Biol Macromol 2019; 128:923-933. [PMID: 30716368 DOI: 10.1016/j.ijbiomac.2019.01.217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 01/31/2019] [Accepted: 01/31/2019] [Indexed: 02/06/2023]
Abstract
Streptozocin (STZ) is a broad range antibiotic, highly genotoxic, antineoplastic and hyperglycemic. HSA is the most abundant protein in physiology and it binds to almost all exogenic and endogenic ligands, including drugs. STZ-induced fluorescence quenching of HSA has been done at pH 7.4, pH 3.5 and at pH 7.4 with 4.5 M urea at temperatures 286 K, 291 K, and 306 K. Ksv found to be 103 M-1, binding constant 1.5X103M-1 and binding sites ~1. But, Ksv for HSA and glucopyranose interaction was found lesser than that of HSA-STZ binding. Binding of STZ/glucopyranose on HSA seems to result in complex formation as calculated Kq > 1010 M-1 s-1. The number of binding sites, binding constants, and binding energies were increased with temperature. The ΔG0, ΔH0, and ΔS0 for HSA-STZ interaction were found to be -17.7 × 103 J·mol-1; 2.34 × 105 J·mol-1 and 841 JK-1 mol-1 respectively at pH 7.4 and 291 K. The comparative bindings of N, F and I states of HSA with STZ and their molecular docking analyses indicate that IIIA-B junction (i.e., inter-helix h6DOM3-h7DOM3) is the probable binding site, a locus close to fatty acid binding site-5. These results could be useful for therapeutic and analytical exploitation of STZ, as albumin used as the vehicle for drug delivery.
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Affiliation(s)
- Amogh S Deshpande
- Department of Biotechnology, School of Bioscience and Technology, Vellore Institute of Technology, Vellore 632014, India
| | - Sriroopreddy Ramireddy
- Department of Biotechnology, School of Bioscience and Technology, Vellore Institute of Technology, Vellore 632014, India
| | - C Sudandiradoss
- Department of Biotechnology, School of Bioscience and Technology, Vellore Institute of Technology, Vellore 632014, India
| | - Ayesha Noor
- Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore 632014, India
| | - Priyankar Sen
- Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore 632014, India.
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131
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Lee SP, Kuo FY, Cheng JT, Wu MC. GLP-1 mediates the modulating effect of thymoquinone on feeding behaviors in diabetic rats. Diabetes Metab Syndr Obes 2019; 12:873-881. [PMID: 31354323 PMCID: PMC6580122 DOI: 10.2147/dmso.s207596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/09/2019] [Indexed: 12/30/2022] Open
Abstract
Background: Thymoquinone (TQ) is a safe nutrient isolated from the seeds or volatile oil extract of Nigella sativa. In addition to its benefits in glucose regulation, TQ improves feeding disorders in diabetic animals. Glucagon-like peptide-1 (GLP-1) analogs improve glycemic control and ameliorate obesity or hyperphagia. Therefore, the present study aimed to investigate the role of GLP-1 in TQ-induced anorexia. Method: Type 2 diabetes was induced in rats by nicotinamide and streptozotocin injection. TQ was orally administered to diabetic rats at different doses for 45 days. Following TQ treatment, changes in serum glucose levels, GLP-1 concentration, body weight, food intake, and water intake were determined. To further explore the interaction between GLP-1 and TQ, the inhibitor of dipeptidyl peptidase 4, sitagliptin and the GLP-1 receptor antagonist exendin 9-39 (Ex 9-39) were separately administered to TQ- or vehicle-treated diabetic rats. Results: TQ treatment attenuated hyperglycemia and reduced hyperphagy and water intake in streptozotocin-induced diabetic rats in a dose-dependent manner. Moreover, TQ treatment elevated plasma GLP-1 levels compared to those in control rats. The effects of TQ were enhanced by treatment with sitagliptin and reduced by the injection of Ex 9-39 into the brain. In contrast, similar treatment with another antioxidant (either ascorbic acid or N-acetylcysteine) produced the same anorexic effect as TQ without changing the plasma GLP-1 levels in diabetic rats. Therefore, TQ attenuated hyperphagy while increasing plasma GLP-1 levels and had antioxidant-like effects. Conclusion: TQ increased endogenous GLP-1 levels to reduce hyperphagy in diabetic rats.
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Affiliation(s)
- Shu Ping Lee
- Department of Food Science, College of Agriculture, National Pingtung University of Science and Technology, Pingtung91201, Taiwan
| | - Feng Yu Kuo
- Department of Food Science, College of Agriculture, National Pingtung University of Science and Technology, Pingtung91201, Taiwan
- Cardiovascular Center, Veterans General Hospital, Kaohsiung City81362, Taiwan
| | - Juei-Tang Cheng
- Department of Medical Research, Chi-Mei Medical Center, Tainan City71003, Taiwan
- Institute of Medical Science, College of Health Science, Chang Jung Christian University, Tainan City71101, Taiwan
- Correspondence: Juei-Tang ChengDepartment of Medical Research, Chi-Mei Medical Center, Yongkang Dist., Tainan City71004, TaiwanTel +886 6 251 7864Email
| | - Ming Chang Wu
- Department of Food Science, College of Agriculture, National Pingtung University of Science and Technology, Pingtung91201, Taiwan
- Ming Chang WuDepartment of Food Science, College of Agriculture, National Pingtung University of Science and Technology, Neipu91201, Pingtung, TaiwanTel +886 8 770 3202Email
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132
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Howarth F, A. Smail M, Qureshi M, Shmygol A, Singh J, Al Kury L. Contraction and intracellular calcium transport in epicardial and endocardial ventricular myocytes from streptozotocin-induced diabetic rat. HAMDAN MEDICAL JOURNAL 2019. [DOI: 10.4103/hmj.hmj_32_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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133
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Sarkar P, Nath K, Banu S. Modulatory effect of baicalein on gene expression and activity of antioxidant enzymes in streptozotocin-nicotinamide induced diabetic rats. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000118201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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134
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Huang S, Xu Y, Ge X, Xu B, Peng W, Jiang X, Shen L, Xia L. Long noncoding RNA NEAT1 accelerates the proliferation and fibrosis in diabetic nephropathy through activating Akt/mTOR signaling pathway. J Cell Physiol 2018; 234:11200-11207. [PMID: 30515796 DOI: 10.1002/jcp.27770] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 10/30/2018] [Indexed: 01/13/2023]
Abstract
Accumulating evidence has indicated the significant roles of long noncoding RNAs (lncRNAs) in the pathophysiology of diabetic nephropathy (DN). LncRNA nuclear enriched abundant transcript 1 (NEAT1) has been reported to exert a key role in the progression of several diseases including diabetes. However, the role of NEAT1 in the regulation of DP progression remains barely known. Therefore, our study aimed to investigate the role of NEAT1 in a streptozotocin-induced diabetes model (DM) of rats and glucose-induced mouse mesangial cell models. Currently, we found that NEAT1 was greatly upregulated in DM rats and glucose-induced mice mesangial cells, in which a high activation of Akt/mTOR signaling was also observed. Then, it was shown that knockdown of NETA1 was able to reduce renal injury in DM rats obviously. In addition, cell counting kit-8 assay and 5-ethynyl-2'-deoxyuridine assay were carried out and we observed downregulation of NEAT1 significantly inhibited mesangial cell proliferation. Meanwhile, extracellular matrix proteins and messenger RNA (transforming growth factor β1, fibronectin, and collagen IV) expression was dramatically restrained by silencing of NEAT1 in the high glucose-induced mesangial cells. Finally, knockdown of NEAT1 greatly reduced the expression of the phosphorylation of Akt and mammalian target of rapamycin (mTOR) in vitro. These findings revealed that the decrease of NEAT1 repressed the proliferation and fibrosis in DN via activating the Akt/mTOR signaling pathway, which might represent a novel pathological mechanism of DN progression.
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Affiliation(s)
- Shan Huang
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Yong Xu
- Department of Nephrology, Huai'an Second People's Hospital and The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Xiaoxu Ge
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Bojin Xu
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Wenfang Peng
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Xiaohong Jiang
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Lisha Shen
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Lili Xia
- Endocrinology Department, School of Medicine, Shanghai Tongren Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
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Álvarez-Lloret P, Fernández JM, Molinuevo MS, Lino AB, Ferretti JL, Capozza RF, Cortizo AM, McCarthy AD. Multi-Scale Approach for the Evaluation of Bone Mineralization in Strontium Ranelate-Treated Diabetic Rats. Biol Trace Elem Res 2018; 186:457-466. [PMID: 29623650 DOI: 10.1007/s12011-018-1322-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/21/2018] [Indexed: 11/27/2022]
Abstract
Long-term diabetes mellitus can induce osteopenia and osteoporosis, an increase in the incidence of low-stress fractures, and/or delayed fracture healing. Strontium ranelate (SrR) is a dual-action anti-osteoporotic agent whose use in individuals with diabetic osteopathy has not been adequately evaluated. In this study, we studied the effects of an oral treatment with SrR and/or experimental diabetes on bone composition and biomechanics. Young male Wistar rats (half non-diabetic, half with streptozotocin/nicotinamide-induced diabetes) were either untreated or orally administered 625 mg/kg/day of SrR for 6 weeks. After sacrifice, femora from all animals were evaluated by a multi-scale approach (X-ray diffraction, Fourier transform infrared spectroscopy, inductively coupled plasma optical-emission spectrometry, static histomorphometry, pQCT, and mechanical testing) to determine chemical, crystalline, and biomechanical properties. Untreated diabetic animals (versus untreated non-diabetic) showed a decrease in femoral mineral carbonate content, in cortical thickness and BMC, in trabecular osteocyte density, in maximum load supported at rupture and at yield point, and in overall toughness at mid-shaft. Treatment of diabetic animals with SrR further affected several parameters of bone (some already impaired by diabetes): crystallinity index (indicating less mature apatite crystals); trabecular area, BMC, and vBMD; maximum load at yield point; and structural elastic rigidity. However, SrR was also able to prevent the diabetes-induced decreases in trabecular osteocyte density (completely) and in bone ultimate strength at rupture (partially). Our results indicate that SrR treatment can partially but significantly prevent some bone structural mechanical properties as previously affected by diabetes, but not others (which may even be worsened).
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Affiliation(s)
- Pedro Álvarez-Lloret
- Departament of Geology, University of Oviedo, C/Jesús Arias de Velasco, s/n, 33005, Oviedo, Spain
| | - Juan Manuel Fernández
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900, La Plata, Argentina
| | - María Silvina Molinuevo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900, La Plata, Argentina
| | - Agustina Berenice Lino
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900, La Plata, Argentina
| | - José Luis Ferretti
- Centro de Estudios del Metabolismo Fosfocálcico (CeMFoC), Facultad de Medicina, Universidad Nacional de Rosario, 2000, Rosario, Argentina
| | - Ricardo Francisco Capozza
- Centro de Estudios del Metabolismo Fosfocálcico (CeMFoC), Facultad de Medicina, Universidad Nacional de Rosario, 2000, Rosario, Argentina
| | - Ana María Cortizo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900, La Plata, Argentina
| | - Antonio Desmond McCarthy
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900, La Plata, Argentina.
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Hidayat AFA, Chan CK, Mohamad J, Kadir HA. Leptospermum flavescens Sm. protect pancreatic β cell function from streptozotocin involving apoptosis and autophagy signaling pathway in in vitro and in vivo case study. JOURNAL OF ETHNOPHARMACOLOGY 2018; 226:120-131. [PMID: 30118836 DOI: 10.1016/j.jep.2018.08.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/12/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL IMPORTANCE Leptospermum flavescens has been used traditionally in Malaysia to treat various ailments such as constipation, hypertension, diabetes and cancer. AIM OF STUDY To investigate the potential protective effects of L. flavescens in pancreatic β cells through inhibition of apoptosis and autophagy cell death mechanisms in in vitro and in vivo models. MATERIALS AND METHODS L. flavescens leaves were extracted using solvent in increasing polarities: hexane, ethyl acetate, methanol and water. All extracts were tested for INS-1 β cells viability stimulated by streptozotocin (STZ). The extract which promotes the highest cell protective activity was further evaluated for insulin secretion, apoptosis and autophagy signaling pathways. Then, the acute toxicity of extract was carried out in SD rats according to OECD 423 guideline. The active extract was tested in diabetic rats where the pancreatic β islets were evaluated for insulin, apoptosis and autophagy protein. RESULTS The methanolic extract of L. flavescens (MELF) was found to increase INS-1 β cells viability and insulin secretion against STZ. In addition, MELF has been shown to inhibit INS-1 β cells apoptosis and autophagy activity. Notably, there was no toxicity observed in SD rats when administered with MELF. Furthermore, MELF exhibited anti-hyperglycemic activity in diabetic rats where apoptosis and autophagy protein expression was found to be suppressed in pancreatic β islets. CONCLUSION MELF was found to protect pancreatic β cells function from STZ-induced apoptosis and autophagy in in vitro and in vivo.
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Affiliation(s)
- Ahmad Fadhlurrahman Ahmad Hidayat
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chim Kei Chan
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jamaludin Mohamad
- Biohealth Program, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Habsah Abdul Kadir
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Effect of Cistanche Tubulosa Extracts on Male Reproductive Function in Streptozotocin⁻Nicotinamide-Induced Diabetic Rats. Nutrients 2018; 10:nu10101562. [PMID: 30360409 PMCID: PMC6213239 DOI: 10.3390/nu10101562] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/16/2018] [Accepted: 10/20/2018] [Indexed: 01/19/2023] Open
Abstract
Diabetes is a chronic disorder characterized by hyperglycemia due to decreased levels of insulin or the inefficiency of the tissue to use it effectively. Infertility is known as a major outcome of diabetes and affects the male reproductive system by causing sperm impairment and gonadal dysfunction. Cistanche tubulosa is a parasitic plant which has the capacity to improve memory, immunity, and sexual ability, reduce impotence, and minimize constipation. This study was focused on the investigation of the anti-inflammatory and protective effects of echinacoside (ECH) in Cistanche tubulosa extract (CTE) on the male reproductive system of the diabetic rats. The antioxidant, anti-inflammatory, and protective effects of CTE were evaluated by both in vitro and in vivo methods. The in vitro results show that the ECH inhibited reactive oxygen species (ROS) production and improved StAR, CYP11A1, CYP17A1, and HSD17β3 protein expression. The in vivo analysis was carried out with three doses of echinacoside (ECH) (80, 160, and 320 mg/kg) in CTE. In total, 0.571 mg/kg of rosiglitazone (RSG) was administered as a positive control. Diabetes was induced by streptozotocin (STZ) (65 mg/kg) and nicotinamide (230 mg/kg) in combination with a high-fat diet (45%). The in vivo studies confirmed that the ECH improved blood sugar levels, insulin resistance, leptin resistance, and lipid peroxidation. It can restore kisspeptin 1 (KiSS1), G protein-coupled receptor GPR 54, suppressor of cytokine signaling 3 (SOCS-3), and sirtuin 1 (SIRT1) messenger ribonucleic acid (mRNA) expression in the hypothalamus and recover sex hormone level. Thus, this study confirmed the antioxidant, anti-inflammatory, and steroidogenesis effects of CTE.
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138
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Grain Amaranth Is Associated with Improved Hepatic and Renal Calcium Metabolism in Type 2 Diabetes Mellitus of Male Wistar Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:4098942. [PMID: 30420893 PMCID: PMC6211157 DOI: 10.1155/2018/4098942] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/20/2018] [Accepted: 10/02/2018] [Indexed: 12/14/2022]
Abstract
Background Dysregulation of calcium signaling is a hallmark of diabetes mellitus (DM) and grain amaranth (AG) has antidiabetic properties. Information on the mechanism of action of AG on blood, renal, and hepatic tissues is sparse, although it continues to be an important alternative medicinal plant in several developing countries. The objective of the study was to determine key changes in calcium levels and s100a1 protein levels and antioxidant and histopathologic changes in blood, renal, and hepatic tissues of male diabetic Wistar rats. Materials and Methods This was an experimental study in which 30 male Wistar rats were kept for 5 weeks (6 groups, N =5). Groups 1-IV had T2DM induced using Nicotinamide and Streptozotocin: Group I, Mixtard®; group II, positive control; group III, 25% AG; group IV, 50% AG. Furthermore, group V consisted of normal rats given 50% GA and group VI was negative control. Blood, renal, and hepatic tissues were collected and analyzed for calcium, s100a1 protein levels, and antioxidant and histopathological changes. Results and Discussion In blood, renal, and hepatic tissue, calcium and s100a1 levels were low during T2DM and these increased following AG supplementation. This was important for improved metabolic processes, thus leading to the low malondialdehyde (MDA) and glutathione peroxidase (GPx) activity in the tissues. Efficient antioxidant status was important for improved calcium signaling mechanisms, thus leading to improved tissue function and protection demonstrating the importance of AG as an alternative medicinal source through the calcium signaling pathway. Conclusion Grain amaranth exerts its antidiabetic properties through improved calcium homeostasis in blood, kidney, and liver.
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139
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Canistro D, Vivarelli F, Cirillo S, Soleti A, Albertini B, Passerini N, Merizzi G, Paolini M. Efficacy of a new delivery system based on solid lipid microparticles for the oral administration of the non-conventional antioxidant IAC on a diabetes mouse model. J Endocrinol Invest 2018; 41:1227-1236. [PMID: 29511967 DOI: 10.1007/s40618-018-0858-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 02/27/2018] [Indexed: 01/02/2023]
Abstract
PURPOSE We previously showed the positive effects of the new antioxidant molecule bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl)-decandioate (IAC) in reducing basal hyperglycaemia and relieving glucose intolerance in a diabetes model. However, the chemical properties of IAC did not allow an efficient oral administration, thus representing the main failing of that study. Here, we tested the effect of a new oral delivery system based on solid lipid microparticles (SLMs) in a diabetes mouse model. METHODS The diabetes model was induced in C57B1/6J mice using streptozotocin and nicotinamide. Only the animals that overcame the glycaemic threshold of 180 mg/dL were enrolled in the study. Diabetic animals were then randomly assigned to 4 groups (n = 9) and treated once a day for 5 consecutive weeks with IAC (50, 100, and 150 mg/kg b.w.). The control group was composed of (n = 7) healthy mice that received only the vehicle. Glucose level was weekly monitored during the treatment period and up to 3 weeks after the suspension of the treatment. Glucose tolerance and insulin-resistance test were carried out. RESULTS Our results showed that SLMs maintained the IAC effect in reducing basal hyperglycaemia as well as improving the insulin sensitivity and glucose tolerance. CONCLUSION The present study confirms that SLMs are promising drug carriers, which allow the oral administration of IAC ensuring its therapeutic efficacy. The concrete possibility to administer IAC per os represents a significant breakthrough in the putative consideration of this multi-radical scavenger in the diabetes therapeutic approach.
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Affiliation(s)
- D Canistro
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy.
| | - F Vivarelli
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
| | - S Cirillo
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
| | - A Soleti
- Medestea Research, Via Cernaia 31, 10121, Turin, Italy
| | - B Albertini
- Department of Pharmacy and Biotechnology, University of Bologna, Via S. Donato 19/2, 40127, Bologna, Italy
| | - N Passerini
- Department of Pharmacy and Biotechnology, University of Bologna, Via S. Donato 19/2, 40127, Bologna, Italy
| | - G Merizzi
- Medestea Research, Via Cernaia 31, 10121, Turin, Italy
| | - M Paolini
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
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140
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Saeedi Borujeni MJ, Esfandiary E, Ghanadian M, Valiani A, Baradaran A, Yazdani A. Alterations in lipid peroxidation, lipid profile, insulin sensitivity, and hepatic histopathological changes in diabetic rats following the treatment with
Salvadora persica. J Cell Biochem 2018; 120:3696-3708. [DOI: 10.1002/jcb.27649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 08/14/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Mohammad Javad Saeedi Borujeni
- Department of Anatomical Sciences and Molecular Biology School of Medicine, Isfahan University of Medical Sciences Isfahan Iran
| | - Ebrahim Esfandiary
- Department of Anatomical Sciences and Molecular Biology School of Medicine, Isfahan University of Medical Sciences Isfahan Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences Isfahan University of Medical Sciences Isfahan Iran
| | - Ali Valiani
- Department of Anatomical Sciences and Molecular Biology School of Medicine, Isfahan University of Medical Sciences Isfahan Iran
| | - Azar Baradaran
- Department of Pathology School of Medicine, Isfahan University of Medical Sciences Isfahan Iran
| | - Amid Yazdani
- School of Medicine, Isfahan University of Medical Sciences Isfahan Iran
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141
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Rohajatien U, Harijono H, Estiasih T, Sriwahyuni E. Bitter Melon (Momordica charantia L) Fruit Decreased Blood Glucose Level and Improved Lipid Profile of Streptozotocin Induced Hyperglycemia Rats. CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE JOURNAL 2018. [DOI: 10.12944/crnfsj.6.2.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Bitter melon (Momordica charantia, L) is a fruit that traditionally believe has benefits on health. The objective of this study is to identify bitter melon bioactive and nutritional compounds, and their effect on blood glucose level and lipid profile of streptozotocin induced hyperglycemia rats. Rats were divided into three group, those were normal group; hyperglycemia group without bitter melon fruit feeding; and hyperglycemia group with bitter melon fruit administration. Hyperglycemia condition was achieved by STZ induction. The experiment was conducted for 4 weeks. The results showed that fresh bitter melon fruit contains β-sitosterol 348.16+1.66 ppm, stigmasterol 183.08+0.8 ppm, campesterol 130.79+0.4 ppm, diosgenin 16.42+0.06 ppm, soluble dietary fiber 2.99+0.07%, insoluble dietary fiber 0.55+0.01%, and pectin 1.41+0.05%. At week 4 of experiment, bitter melon fruit fed hyperglycemia group showed a decrease of 56% blood glucose level compared to blood glucose level at week 0. Body weight of this group also increased. The improvement of lipid profile of bitter melon fed group was indicated by decreasing blood total cholesterol of 49%, triglyceride of 35%, LDL cholesterol of 42%, and increasing HDL of 133% compared to initial level at week 0. Bitter melon also increased fecal cholesterol secretion and effectively inhibited cholesterol absorption in hyperglycemia rats. Bitter melon fruit is suggested for hyperglycemia management due to its ability to reduce glucose and improve lipid profile simultaneously.
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Affiliation(s)
- Ummi Rohajatien
- Faculty of Agriculture, Brawijaya University, Jl. Veteran, Malang, Indonesia
| | - Harijono Harijono
- Department of Food Science and Technology, Brawijaya University, Jl. Veteran, Malang, Indonesia
| | - Teti Estiasih
- Department of Food Science and Technology, Brawijaya University, Jl. Veteran, Malang, Indonesia
| | - Endang Sriwahyuni
- Faculty of Medicine, Brawijaya University, Jl. Veteran, Malang, Indonesia
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142
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Birgani GA, Ahangarpour A, Khorsandi L, Moghaddam HF. Anti-diabetic effect of betulinic acid on streptozotocin-nicotinamide induced diabetic male mouse model. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902018000217171] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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143
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Effects of exercise training on adipose tissue apelin expression in streptozotocin-nicotinamide induced diabetic rats. Gene 2018; 662:97-102. [DOI: 10.1016/j.gene.2018.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/28/2018] [Accepted: 04/03/2018] [Indexed: 02/01/2023]
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144
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Hamza AA, Fikry EM, Abdallah W, Amin A. Mechanistic insights into the augmented effect of bone marrow mesenchymal stem cells and thiazolidinediones in streptozotocin-nicotinamide induced diabetic rats. Sci Rep 2018; 8:9827. [PMID: 29959408 PMCID: PMC6026169 DOI: 10.1038/s41598-018-28029-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/12/2018] [Indexed: 02/06/2023] Open
Abstract
This study was designed to assess whether the protective effects of bone marrow-derived mesenchymal stem cells (MSCs) against diabetes could be enhanced by pioglitazone (PIO), a PPARγ agonist. Combined MSCs and PIO treatments markedly improved fasting blood glucose, body weight, lipid profile levels, insulin level, insulin resistance, β cell function. Those protective effects also attenuated both pancreatic lesions and fibrosis in diabetic rats and decreased the depletion of pancreatic mediators of glycemic and lipid metabolism including peroxisome proliferator-activated receptor alpha (PPARα), PGC-1α, GLP-1 and IRS-2. Cardiac biogenesis of diabetic groups was also improved with MSCs and/or PIO treatments as reflected by the enhanced up-regulation of the expressions of cardiac IRS1, Glucose transporter 4, PGC-1, PPARα and CPT-1 genes and the down-regulated expression of lipogenic gene SREBP. The combination of MSCs and PIO also potentiated the decrease of abnormal myocardial pathological lesions in diabetic rats. Similarly, the inhibitory effects of MSCs on diabetic cardiac fibrosis and on the up regulations of TGF-β, collagen I and III gene expressions were partial but additive when combined with PIO. Therefore, combined therapy with PIO and BMCs transplantation could further potentiate the protective benefit of MSCs against diabetes and cardiac damage compared to MSCs monotherapy.
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Affiliation(s)
- Alaaeldin Ahmed Hamza
- Hormone Evaluation Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt.
| | | | | | - Amr Amin
- Biology Department, College of Science, UAE University, Al-Ain, UAE.
- Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt.
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145
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Oral supplementation with melatonin reduces oxidative damage and concentrations of inducible nitric oxide synthase, VEGF and matrix metalloproteinase 9 in the retina of rats with streptozotocin/nicotinamide induced pre-diabetes. Eur J Pharmacol 2018; 833:290-297. [PMID: 29890158 DOI: 10.1016/j.ejphar.2018.06.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 10/14/2022]
Abstract
Hyperglycemia mediated oxidative stress and pro-angiogenic molecules such as vascular endothelial growth factor (VEGF) and matrix metalloproteinase 9 (MMP9) are considered important for diabetic retinopathy onset and progression. Melatonin is a pineal hormone that regulates circadian and seasonal rhythms and most likely is involved in regulating glucose metabolism. We aimed to evaluate the potential benefit of melatonin supplementation to the pre-diabetic retina by assessing melatonin effects on lipid peroxidation (thiobarbituric acid reactive substances, TBARS), protein oxidation (advanced oxidation protein products, AOPP) and concentrations of inducible nitric oxide synthase (iNOS), VEGF and MMP9 in the retina of rats with pre-diabetes. Pre-diabetes was induced by streptozotocin (45 mg/kg, i.p.) following nicotinamide injection (110 mg/kg, i.p.). Beside mild hyperglycemia, lower serum insulin, increased fructosamine and lower HDL cholesterol, the present study demonstrated decreased serum melatonin in pre-diabetic rats, as well as, increased concentration of retinal TBARS, AOPP, iNOS, VEGF, and MMP9. Oral supplementation with melatonin (85 μg/animal/day) caused melatonin and HDL cholesterol levels to rise in treated rats and reduced levels of fasting serum glucose and fructosamine. It also affected serum insulin and quantitative insulin sensitivity check index (QUICKI) in treated groups but had no significant effect on non-fasting glucose. Finally, supplementation with melatonin reduced concentrations of TBARS, AOPP, iNOS, VEGF, and MMP9 in significant level, thereby exerting an overall positive effect on oxidative stress and pro-angiogenic signaling in the pre-diabetic retina. Thus, oral melatonin might be considered in an early treatment or in the prevention of retinal changes associated with pre-diabetes.
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Abstract
In diabetes mellitus, the polyol pathway is highly active and consumes approximately 30% glucose in the body. This pathway contains 2 reactions catalyzed by aldose reductase (AR) and sorbitol dehydrogenase, respectively. AR reduces glucose to sorbitol at the expense of NADPH, while sorbitol dehydrogenase converts sorbitol to fructose at the expense of NAD+, leading to NADH production. Consumption of NADPH, accumulation of sorbitol, and generation of fructose and NADH have all been implicated in the pathogenesis of diabetes and its complications. In this review, the roles of this pathway in NADH/NAD+ redox imbalance stress and oxidative stress in diabetes are highlighted. A potential intervention using nicotinamide riboside to restore redox balance as an approach to fighting diabetes is also discussed.
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Affiliation(s)
- Liang-Jun Yan
- Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX, USA
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147
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Congenic mapping and candidate gene analysis for streptozotocin-induced diabetes susceptibility locus on mouse chromosome 11. Mamm Genome 2018. [PMID: 29523950 DOI: 10.1007/s00335-018-9742-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Streptozotocin (STZ) has been widely used to induce diabetes in rodents. Strain-dependent variation in susceptibility to STZ has been reported; however, the gene(s) responsible for STZ susceptibility has not been identified. Here, we utilized the A/J-11SM consomic strain and a set of chromosome 11 (Chr. 11) congenic strains developed from A/J-11SM to identify a candidate STZ-induced diabetes susceptibility gene. The A/J strain exhibited significantly higher susceptibility to STZ-induced diabetes than the A/J-11SM strain, confirming the existence of a susceptibility locus on Chr. 11. We named this locus Stzds1 (STZ-induced diabetes susceptibility 1). Congenic mapping using the Chr. 11 congenic strains indicated that the Stzds1 locus was located between D11Mit163 (27.72 Mb) and D11Mit51 (36.39 Mb). The Mpg gene, which encodes N-methylpurine DNA glycosylase (MPG), a ubiquitous DNA repair enzyme responsible for the removal of alkylated base lesions in DNA, is located within the Stzds1 region. There is a close relationship between DNA alkylation at an early stage of STZ action and the function of MPG. A Sanger sequence analysis of the Mpg gene revealed five polymorphic sites in the A/J genome. One variant, p.Ala132Ser, was located in a highly conserved region among rodent species and in the minimal region for retained enzyme activity of MPG. It is likely that structural alteration of MPG caused by the p.Ala132Ser mutation elicits increased recognition and excision of alkylated base lesions in DNA by STZ.
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148
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Zafaranieh S, Choobineh S, Soori R. The effect of 12 weeks of aerobic exercise on mitochondrial dynamics in cardiac myocytes of type 2 diabetic rats. SPORT SCIENCES FOR HEALTH 2018. [DOI: 10.1007/s11332-018-0430-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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149
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Omolaoye TS, Skosana BT, du Plessis SS. Diabetes mellitus- induction: Effect of different streptozotocin doses on male reproductive parameters. Acta Histochem 2018; 120:103-109. [PMID: 29277349 DOI: 10.1016/j.acthis.2017.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/28/2017] [Accepted: 12/12/2017] [Indexed: 12/27/2022]
Abstract
Diabetes mellitus (DM) is reported to be involved in male reproductive impairment, and its impact is evident in the increased prevalence of infertility. Various studies have reported that a single parenteral injection of <40 mg/kg Streptozotocin (STZ) is ineffective in ablating pancreatic β-cells and creating a rat model to investigate the effect of DM on the male reproductive system. This study therefore aims to validate these claims. Adult male Wistar rats received either a single intraperitoneal injection of STZ (30 mg/kg or 60 mg/kg) or saline (0.9%, Control). Diabetes was confirmed after 72 h if plasma glucose levels were ≥14 mmol/L. Body weight, glucose level, fluid and food intake were measured weekly. Animals were sacrificed after 8 weeks of treatment by an overdose of sodium pentobarbital (160 mg/kg body weight). The testis and epididymis were harvested and weighed prior to preparation for histological evaluation. Epididymal sperm morphology was analysed using computer aided sperm analysis (CASA). STZ60 animals presented with significantly lower body weights compared to both control and STZ30 groups. Animals in both STZ30 and STZ60 groups showed decreased normal sperm morphology compared to control. Histological evaluation of the testes showed a decrease in the number of spermatozoa in the seminiferous tubules of animals in the STZ30 and STZ60 groups compared to control. A complete absence of spermiogenesis was observed in the seminiferous tubules of STZ60 animals. These findings prove that an STZ concentration of 30 mg/kg, which is much lower than the reported 40 mg/kg, has adverse effects on the male reproductive system via its diabetogenic effect and can therefore be used to study the impact of DM on male fertility.
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150
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Pham VM, Tu NH, Katano T, Matsumura S, Saito A, Yamada A, Furue H, Ito S. Impaired peripheral nerve regeneration in type-2 diabetic mouse model. Eur J Neurosci 2018; 47:126-139. [DOI: 10.1111/ejn.13771] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 11/02/2017] [Accepted: 11/02/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Vuong M. Pham
- Department of Medical Chemistry; Kansai Medical University; 2-5-1 Shin-machi Hirakata 573-1010 Japan
| | - Nguyen Huu Tu
- Department of Medical Chemistry; Kansai Medical University; 2-5-1 Shin-machi Hirakata 573-1010 Japan
| | - Tayo Katano
- Department of Medical Chemistry; Kansai Medical University; 2-5-1 Shin-machi Hirakata 573-1010 Japan
| | - Shinji Matsumura
- Department of Medical Chemistry; Kansai Medical University; 2-5-1 Shin-machi Hirakata 573-1010 Japan
| | - Akira Saito
- Central Research Laboratory; Kansai Medical University; Hirakata Japan
| | - Akihiro Yamada
- Department of Neurophysiology; Hyogo College of Medicine; Nishinomiya Japan
| | - Hidemasa Furue
- Department of Neurophysiology; Hyogo College of Medicine; Nishinomiya Japan
| | - Seiji Ito
- Department of Medical Chemistry; Kansai Medical University; 2-5-1 Shin-machi Hirakata 573-1010 Japan
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