1
|
Ali IH, Hassan RM, El Kerdawy AM, Abo-Elfadl MT, Abdallah HMI, Sciandra F, Ghannam IAY. Novel thiazolidin-4-one benzenesulfonamide hybrids as PPARγ agonists: Design, synthesis and in vivo anti-diabetic evaluation. Eur J Med Chem 2024; 269:116279. [PMID: 38460271 DOI: 10.1016/j.ejmech.2024.116279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/12/2024] [Accepted: 02/21/2024] [Indexed: 03/11/2024]
Abstract
In the current study, two series of novel thiazolidin-4-one benzenesulfonamide arylidene hybrids 9a-l and 10a-f were designed, synthesized and tested in vitro for their PPARɣ agonistic activity. The phenethyl thiazolidin-4-one sulphonamide 9l showed the highest PPARɣ activation % by 41.7%. Whereas, the 3-methoxy- and 4-methyl-4-benzyloxy thiazolidin-4-one sulphonamides 9i, and 9k revealed moderate PPARɣ activation % of 31.7, and 32.8%, respectively, in addition, the 3-methoxy-3-benzyloxy thiazolidin-4-one sulphonamide 10d showed PPARɣ activation % of 33.7% compared to pioglitazone. Compounds 9b, 9i, 9k, 9l, and 10d revealed higher selectivity to PPARɣ over the PPARδ, and PPARα isoforms. An immunohistochemical study was performed in HepG-2 cells to confirm the PPARɣ protein expression for the most active compounds. Compounds 9i, 9k, and 10d showed higher PPARɣ expression than that of pioglitazone. Pharmacological studies were also performed to determine the anti-diabetic activity in rats at a dose of 36 mg/kg, and it was revealed that compounds 9i and 10d improved insulin secretion as well as anti-diabetic effects. The 3-methoxy-4-benzyloxy thiazolidin-4-one sulphonamide 9i showed a better anti-diabetic activity than pioglitazone. Moreover, it showed a rise in blood insulin by 4-folds and C-peptide levels by 48.8%, as well as improved insulin sensitivity. Moreover, compound 9i improved diabetic complications as evidenced by decreasing liver serum enzymes, restoration of total protein and kidney functions. Besides, it combated oxidative stress status and exerted anti-hyperlipidemic effect. Compound 9i showed a superior activity by normalizing some parameters and amelioration of pancreatic, hepatic, and renal histopathological alterations caused by STZ-induction of diabetes. Molecular docking studies, molecular dynamic simulations, and protein ligand interaction analysis were also performed for the newly synthesized compounds to investigate their predicted binding pattern and energies in PPARɣ binding site.
Collapse
Affiliation(s)
- Islam H Ali
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Rasha M Hassan
- Medicinal and Pharmaceutical Chemistry Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre (ID: 60014618), P.O. 12622, Dokki, Giza, Egypt
| | - Ahmed M El Kerdawy
- School of Pharmacy, College of Health and Science, University of Lincoln, Joseph Banks Laboratories, Green Lane, Lincoln, United Kingdom; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Mahmoud T Abo-Elfadl
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Dokki, Cairo 12622, Egypt; Biochemistry Department, Biotechnology Research Institute, National Research Centre, Dokki, Cairo, Egypt
| | - Heba M I Abdallah
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Francesca Sciandra
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta"- SCITEC (CNR) Sede di Roma, Largo F. Vito 1, 00168 Roma, Italy
| | - Iman A Y Ghannam
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Cairo 12622, Egypt.
| |
Collapse
|
2
|
Tegegne BA, Yihunie W, Aschale Y, Belew H, Getachew M. Validation of Blood Glucose and Lipid-Lowering Effect of Solvent Fractions of the Crinum Abyssinicum Shoot Tips in Streptozotocin-Induced Diabetic Mice. GLOBAL ADVANCES IN INTEGRATIVE MEDICINE AND HEALTH 2024; 13:27536130231225464. [PMID: 38226326 PMCID: PMC10788077 DOI: 10.1177/27536130231225464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 12/02/2023] [Accepted: 12/20/2023] [Indexed: 01/17/2024]
Abstract
Background Diabetes mellitus prevalence has reached epidemic levels despite the existence of contemporary treatments. People thus started looking at the possible therapeutic value of natural therapies. Crushed shoot tips of Crinum abyssinicum (Amaryllidaceae) are mixed with water in Ethiopia to treat diabetes, yet this practice is not well supported by science. Objective In this experiment, mice models were used to verify the blood sugar and lipid-lowering benefits of solvent fractions of C. abyssinicum shoot tips. Materials and Methods In a single-dose treated Streptozotocin (STZ)-induced diabetic model, mice were randomly grouped into eleven categories which include diabetic negative control, diabetic positive control, and 9 diabetic treatment groups. In repeated daily doses treated STZ-induced model, Mice were divided into 6 groups which included normal and diabetic negative control (TW80), diabetic positive control (5 mg/kg glibenclamide), and three diabetic treatment groups 100, 200, and 400 mg/kg). Finally, blood glucose, lipid level, and body weight were examined. Results In the single-dose treated diabetic model, there was a significant blood glucose reduction at 200 and 400 mg/kg doses of aqueous fraction and glibenclamide starting from the sixth-hour post-administration unlike ethyl acetate and chloroform fraction compared to baseline and negative control. In repeated daily dose-treated diabetic mice, all three doses (100, 200, and 400 mg/kg of aqueous fraction) resulted in a substantial reduction (P < .001) in blood glucose compared to baseline and negative control on the seventh day and 14th day. Besides the AQF shows improvement in lipid levels and body weight parameters. Conclusion The results of the study demonstrated that C. abyssinicum shoot tip fractions have the greatest potential to lower blood sugar and lipid levels, supporting conventional claims for the treatment of diabetes.
Collapse
Affiliation(s)
| | - Wubetu Yihunie
- Department of Pharmacy, Debre Markos University, Debre Markos, Ethiopia
| | - Yibeltal Aschale
- Department of Medical Laboratory, Debre Markos University, Debre Markos, Ethiopia
| | - Habtamu Belew
- Department of Medical Laboratory, Debre Markos University, Debre Markos, Ethiopia
| | - Melese Getachew
- Department of Pharmacy, Debre Markos University, Debre Markos, Ethiopia
| |
Collapse
|
3
|
Abo-Shady AM, Gheda SF, Ismail GA, Cotas J, Pereira L, Abdel-Karim OH. Antioxidant and Antidiabetic Activity of Algae. Life (Basel) 2023; 13:life13020460. [PMID: 36836817 PMCID: PMC9964347 DOI: 10.3390/life13020460] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Currently, algae arouse a growing interest in the pharmaceutical and cosmetic area due to the fact that they have a great diversity of bioactive compounds with the potential for pharmacological and nutraceutical applications. Due to lifestyle modifications brought on by rapid urbanization, diabetes mellitus, a metabolic illness, is the third largest cause of death globally. The hunt for an efficient natural-based antidiabetic therapy is crucial to battling diabetes and the associated consequences due to the unfavorable side effects of currently available antidiabetic medications. Finding the possible advantages of algae for the control of diabetes is crucial for the creation of natural drugs. Many of algae's metabolic processes produce bioactive secondary metabolites, which give algae their diverse chemical and biological features. Numerous studies have demonstrated the antioxidant and antidiabetic benefits of algae, mostly by blocking carbohydrate hydrolyzing enzyme activity, such as α-amylase and α-glucosidase. Additionally, bioactive components from algae can lessen diabetic symptoms in vivo. Therefore, the current review concentrates on the role of various secondary bioactive substances found naturally in algae and their potential as antioxidants and antidiabetic materials, as well as the urgent need to apply these substances in the pharmaceutical industry.
Collapse
Affiliation(s)
| | - Saly Farouk Gheda
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Gehan Ahmed Ismail
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - João Cotas
- MARE—Marine and Environmental Sciences Centre/ARNET—Aquatic Research Network, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Leonel Pereira
- MARE—Marine and Environmental Sciences Centre/ARNET—Aquatic Research Network, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- Correspondence: (L.P.); or (O.H.A.-K.)
| | - Omnia Hamdy Abdel-Karim
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research, 6700 AA Wageningen, The Netherlands
- Correspondence: (L.P.); or (O.H.A.-K.)
| |
Collapse
|
4
|
Vulgarin, a Sesquiterpene Lactone from Artemisia judaica, Improves the Antidiabetic Effectiveness of Glibenclamide in Streptozotocin-Induced Diabetic Rats via Modulation of PEPCK and G6Pase Genes Expression. Int J Mol Sci 2022; 23:ijms232415856. [PMID: 36555498 PMCID: PMC9781739 DOI: 10.3390/ijms232415856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
The current investigation assessed the effect of the eudesmanolid, Vulgarin (VGN), obtained from Artemisia judaica (A. judaica), on the antidiabetic potential of glibenclamide (GLB) using streptozotocin (STZ) to induce diabetes. Seven groups of rats were used in the study; the first group received the vehicle and served as normal control. The diabetic rats of the second to the fifth groups were treated with the vehicle (negative control), GLB at 5 mg/kg (positive control), VGN at 10 mg/kg (VGN-10) and VGN at 20 mg/kg (VGN-20), respectively. The diabetic rats of the sixth and seventh groups were administered combinations of GLB plus VGN-10 and GLB plus VGN-20, respectively. The diabetic rats treated with GLB plus VGN-20 combination showed marked improvement in the fasting blood glucose (FBG), insulin and glycated hemoglobin (HbA1c), as well as the lipid profile, compared with those treated with GLB alone. Further, the pancreatic tissues of the diabetic rats that received the GLB+VGN-20 combination showed superior improvements in lipid peroxidation and antioxidant parameters than those of GLB monotherapy. The insulin content of the β-cells was restored in all treatments, while the levels of glucagon and somatostatin of the α- and δ-endocrine cells were reduced in the pancreatic islets. In addition, the concurrent administration of GLB+VGN-20 was the most effective in restoring PEPCK and G6Pase mRNA expression in the liver. In conclusion, the results demonstrated that the GLB+VGN-20 combination led to greater glycemic improvement in diabetic rats compared with GLB monotherapy through its antioxidant effect and capability to modulate PEPCK and G6Pase gene expression in their livers.
Collapse
|
5
|
Mechanistic Research into the Effects of the Jianpi Xiaozhi Formula on Liver Injury in Diabetic Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:7490747. [PMID: 35911164 PMCID: PMC9328966 DOI: 10.1155/2022/7490747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/15/2022] [Accepted: 07/01/2022] [Indexed: 11/18/2022]
Abstract
Objective The purpose of this study was to explore the mechanism of Jianpi Xiaozhi Formula (JPXZF) action in attenuating liver injury in a rat model of type 2 diabetes mellitus (T2DM). Methods A rat model of T2DM was established. Forty-eight male Sprague–Dawley (SD) rats were randomly allocated to six groups: healthy untreated rats (normal control (NC)), rats with diabetes mellitus (DM), diabetic rats treated with low-dosage JPXZF (DM + JL), diabetic rats treated with an intermediate JPXZF dosage (DM + JM), diabetic rats treated with high-dosage JPXZF (DM + JH), and diabetic rats treated with 4-phenylbutyric acid (PBA) (DM + PBA). The rats in each group were given the indicated drugs for 8 weeks, and pathological changes in the liver tissues of each rat group were observed by haematoxylin-eosin (HE) staining. Reverse-transcription polymerase chain reaction (RT-PCR) and Western blotting (WB) were performed to determine the expression of glucose-regulated protein 78 (GRP78), activating transcription factor 6 (ATF6), family with sequence similarity 134, member B (FAM134B), P62, Beclin-1, and light chain 3II/I (LC3II/I) genes and proteins in the liver tissues of the rats in each group. Immunofluorescence was used to observe changes in FAM134B expression. Results After successfully establishing the rat model, RT-PCR assays revealed that, compared with those in the NC group rats, the expression levels of GRP78, ATF6, and P62 mRNA in the livers of the DM group rats were significantly increased, and the relative expression levels of FAM134B and Beclin-1 mRNA were significantly decreased. Compared with that in the DM group, the relative expression of GRP78, ATF6, and P62 mRNA in the liver of the rats in each JPXZF intervention group was decreased in a dosage-dependent manner, and the relative expression of FAM134B and Beclin-1 mRNA was increased significantly (p < 0.05). WB indicated that, compared with that in the NC group rats, the LC3II/I protein expression ratio in the liver of the DM group rats was significantly reduced, and the LC3II/I protein expression ratio in the liver of the rats in each JPXZF intervention group was significantly increased. In addition, the expression of the other measured proteins was consistent with that of the corresponding mRNA measured by RT-PCR (p < 0.05). The immunofluorescence assay results showed that FAM134B changes were consistent with the results obtained by RT-PCR and WB (p < 0.05). Conclusion Jianpi Xiaozhi Formula may be effective in treating liver injury in diabetic rats by regulating autophagy induced by endoplasmic reticulum stress (ERS).
Collapse
|
6
|
Abdel-Karim OH, Abo-Shady AM, Ismail GA, Gheda SF. Potential effect of Turbinaria decurrens acetone extract on the biochemical and histological parameters of alloxan-induced diabetic rats. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:1447-1468. [PMID: 33678072 DOI: 10.1080/09603123.2021.1888895] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Upon Seeking natural and safe alternatives for synthetic medicines to treat many chronic diseases, seaweeds have offered a promising resource to produce numerous bioactive secondary metabolites. Through in vivo investigations, Turbinaria decurrens acetone extract (AE) revealed its antidiabetic activity against alloxan-induced diabetic rats. Treatment of rats with T. decurrens AE at 300 and 150 mg/Kg doses revealed antihyperglycemic activity by reducing the elevated blood glucose level. A remarkable decrease in the liver, kidney functions, and hyperlipidemia related to diabetes were also detected. Administration of the same extract also showed a recovery in body weight loss, total protein, albumin, and haemoglobin levels compared with untreated diabetic rats. Furthermore, treatment of rats with the same extract improved liver and pancreas histopathological disorders related to diabetes. These effects may be attributed to the presence of bioactive phytochemicals and antioxidant components in T. decurrens AE mainly cyclotrisiloxane, hexamethyl, and cyclic diterpene 3,7,11,15-tetramethyl-2-hexadecen-1-ol (phytol alcohol). Besides, other valuable secondary metabolites, as phenols, flavonoids, alkaloids, terpenoids, steroid and glycosides, which were documented and published by the same authors in a previous study. The obtained results in the present study recommended using T. decurrens AE in developing medicinal preparations for treatment of diabetes and its related symptoms.
Collapse
Affiliation(s)
- Omnia Hamdy Abdel-Karim
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Atef Mohamed Abo-Shady
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Gehan Ahmed Ismail
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Saly Farouk Gheda
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| |
Collapse
|
7
|
Tegegne BA, Mekuria AB, Birru EM. Evaluation of Anti-Diabetic and Anti-Hyperlipidemic Activities of Hydro-Alcoholic Crude Extract of the Shoot Tips of Crinum abyssinicum Hochst. ex A. Rich (Amaryllidaceae) in Mice. J Exp Pharmacol 2022; 14:27-41. [PMID: 35136357 PMCID: PMC8817951 DOI: 10.2147/jep.s335650] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 01/17/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
- Bantayehu Addis Tegegne
- Department of Pharmacy, College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia
- Correspondence: Bantayehu Addis Tegegne, Department of Pharmacy, College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia, Tel +251 9 13 32 62 85, Email
| | - Abebe Basazn Mekuria
- School of Pharmacy, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Eshetie Melese Birru
- School of Pharmacy, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| |
Collapse
|
8
|
Wang S, Yong H, He XD. Multi-omics: Opportunities for research on mechanism of type 2 diabetes mellitus. World J Diabetes 2021; 12:1070-1080. [PMID: 34326955 PMCID: PMC8311486 DOI: 10.4239/wjd.v12.i7.1070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/22/2021] [Accepted: 05/22/2021] [Indexed: 02/06/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a burdensome global disease. In-depth understanding of its mechanism will help to optimize diagnosis and treatment, which reduces the burden. Multi-omics research has unparalleled advantages in contributing to the overall understanding of the mechanism of this chronic metabolic disease. In the past two decades, the study of multi-omics on T2DM-related intestinal flora perturbation and plasma dyslipidemia has shown tremendous potential and is expected to achieve major breakthroughs. The regulation of intestinal flora in diabetic patients has been confirmed by multiple studies. The use of metagenomics, 16S RNA sequencing, and metabolomics has comprehensively identified the overall changes in the intestinal flora and the metabolic disturbances that could directly or indirectly participate in the intestinal flora-host interactions. Lipidomics combined with other “omics” has characterized lipid metabolism disorders in T2DM. The combined application and cross-validation of multi-omics can screen for dysregulation in T2DM, which will provide immense opportunities to understand the mechanisms behind T2DM.
Collapse
Affiliation(s)
- Shuai Wang
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Hui Yong
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Xiao-Dong He
- Department of Physical and Chemical Inspection, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| |
Collapse
|
9
|
Deora N, Sunitha MM, Satyavani M, Harishankar N, Vijayalakshmi MA, Venkataraman K, Venkateshan V. Alleviation of diabetes mellitus through the restoration of β-cell function and lipid metabolism by Aloe vera (L.) Burm. f. extract in obesogenic WNIN/GR-Ob rats. JOURNAL OF ETHNOPHARMACOLOGY 2021; 272:113921. [PMID: 33588009 DOI: 10.1016/j.jep.2021.113921] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aloe vera (L.) Burm. f. extract has been medicinally used for over 5000 years in different cultures for its curative and therapeutic properties ranging from dermatitis to diabetes. It has been demonstrated to alleviate diabetes through its protective effects on pancreatic islets and by improving insulin secretion. AIM OF THE STUDY To investigate the simultaneous effect of ethanolic A. vera gel extract on diabetes and obesogenic milieu in Streptozotocin-induced WNIN/GR-Ob mutant obese rats. MATERIALS AND METHODS A total of 30 rats were grouped equally into WNIN/GR-Ob control (received water as a vehicle), WNIN/GR-Ob Diabetic rats (Streptozotocin-35 mg/kg bw), WNIN/GR-Ob Diabetic rats + Sitagliptin (10 mg/kg bw), WNIN/GR-Ob Diabetic rats + A. vera (300 mg/kg bw) and GR-Ob control + A. vera (300 mg/kg bw). After 4 weeks of treatment, fasting blood glucose, serum insulin, Homeostatic Model Assessment - Insulin Resistance and β-cell function, glucose-stimulated insulin secretion, Dipeptidyl peptidase-IV activity, and lipid profiles were studied. In addition, ultrastructural analysis of isolated islets and dual-energy X-ray absorptiometry analysis for body composition were also carried out. RESULTS The A. vera treated group showed a significant reduction (p < 0.05) in triglyceride, Very low-density lipoprotein levels, Triglyceride to High-density lipoprotein ratio as well as fasting blood glucose levels and DPP-IV activity with a concomitant increase in the serum insulin levels. The increase in IR was observed in both WNIN/GR-Ob control and diabetic rats with a significant decrease in β-cell function in the diabetic rats as per Homeostatic Model Assessment values. Oral administration of A. vera was effective in both reducing Homeostatic Model Assessment-Insulin Resistance and increasing Homeostatic Model Assessment-β values. Also, the treated group demonstrated preservation of islets and a significant increase (p < 0.05) in the diameter of β-cell as evident through Scanning electron microscope analysis. The increase in lean body mass was manifested in the treated group with a reduction in Fat percent in comparison with other groups. CONCLUSION The beneficial effects of A. vera in WNIN/GR-Ob strain may be attributed to its ability to lower lipid profile thus improve insulin sensitivity and/or modulating β-cell function. Thus, it has great therapeutic potential as an herbal remedy for the treatment of diabetes and associated adverse effects such as obesity. The exact mechanism underlying the observation needs to be investigated further to explore the anti-obesity and anti-diabetic properties of A. vera and advocate its potential application as alternative medicine.
Collapse
Affiliation(s)
- Neha Deora
- Centre for Bio-Separation Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - M M Sunitha
- Stem cell Research, National Institute of Nutrition, Hyderabad, Telangana, 500001, India
| | - M Satyavani
- Animal facility, National Institute of Nutrition, Hyderabad, Telangana, 500001, India
| | - N Harishankar
- Animal facility, National Institute of Nutrition, Hyderabad, Telangana, 500001, India
| | | | - Krishnan Venkataraman
- Centre for Bio-Separation Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
| | | |
Collapse
|
10
|
Hafez MH, Elblehi SS, El-Sayed YS. Date palm fruit extract ameliorated pancreatic apoptosis, endocrine dysfunction and regulatory inflammatory cytokines in Streptozotocin-induced diabetes in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43322-43339. [PMID: 32737781 DOI: 10.1007/s11356-020-10262-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 07/22/2020] [Indexed: 06/11/2023]
Abstract
The current work studied the mechanism(s) and ability by which date palm (Phoenix dactylifera L.) fruit extract (DPE) inspired a glucose-lowering impact in rats suffering from diabetes. Forty-eight albino rats were divided into six various experimental treatments after induction of diabetes by intraperitoneal infusion of streptozotocin (45 mg/kg bwt) as follows: normal control, DPE, diabetic control, diabetic glibenclamide (GLI), diabetic DPE, and diabetic GLI plus DPE-treated groups. In animals euthanized after 8 weeks, blood and pancreatic tissue samples were assembled to assess different biochemical and histopathological changes. The expressions of insulin, B cell lymphoma-2 (Bcl-2), and cysteine aspartate-specific protease-3 (caspase-3) in islet β cells were also evaluated using immunohistochemical assessment. Diabetic rats exhibited hyperglycemia; increment of pancreatic malondialdehyde (lipid peroxidation biomarker), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β); and decrement of plasma insulin and pancreatic antioxidants: glutathione, superoxide dismutase, and catalase values. Also, the pancreatic islets exhibited histopathological and morphometric alternations associated with weak positive insulin and Bcl-2 immunoreactivity and strong positive caspase-3 immunoreactivity. DPE and/or GLI, an anti-diabetic drug, improved the pancreatic histoarchitecture and improved β cell function and structure, which increased insulin levels and improved the insulin, Bcl-2, and caspase-3 immunoreactivity in diabetic rats. Nevertheless, the combined DPE and GLI therapy revealed a significant recovery and restoration of β cells' structure and function. The date palm fruit has anti-apoptotic, anti-inflammatory, and antioxidant activities and hypoglycemic effects, which in turn play a pivotal role in avoiding the progression of diabetes mellitus. Moreover, it could potentiate the glucose-lowering activity of anti-diabetic drugs.
Collapse
Affiliation(s)
- Mona H Hafez
- Department of Physiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Samar S Elblehi
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Yasser S El-Sayed
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt.
| |
Collapse
|
11
|
Bhateja PK, Kajal A, Singh R. Amelioration of Diabetes mellitus by modulation of GLP-1 via targeting alpha-glucosidase using Acacia tortilis polysaccharide in Streptozotocin-Nicotinamide induced diabetes in rats. J Ayurveda Integr Med 2020; 11:405-413. [PMID: 33153880 PMCID: PMC7772488 DOI: 10.1016/j.jaim.2019.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 05/20/2019] [Accepted: 06/25/2019] [Indexed: 11/20/2022] Open
Abstract
Background Polysaccharides decrease the glucose level by inhibiting α-glucosidase enzyme which further increases the level of GLP-1 (Glucagon-like peptide 1) to increase the insulin level as per earlier reports. Objective Similar hypothesis was designed in present study to investigate the α-glucosidase enzyme inhibition and involvement of GLP-1 in antidiabetic mechanism of Acacia tortilis polysaccharides (AEATP) in diabetic rats. Isolated polysaccharides were analyzed for their chemical nature by using HPLC and FTIR method. Materials and Methods Male albino wistar rats were divided into control, diabetic, diabetic + voglibose, diabetic + glimepiride, diabetic+250, 500, 1000 mg/kg of AEATP, diabetic + glimepiride + voglibose, diabetic + glimepiride+ 250, 500 and 1000 mg/kg AEATP, diabetic + GLP-1 antagonist+250, 500 and 1000 mg/kg AEATP. Plasma glucose, insulin and active GLP-1 levels were measured 15 min after OGTT. Fasting blood glucose, Plasma triglycerides, glycated hemoglobin (HbA1c), Fasting insulin, pancreatic insulin content, ileum and colon GLP-1 content were assessed at 5th week. Association of alpha-glucosidase was also assessed with GLP-1 and insulin. Results AEATP significantly attenuated hyperglycemia by increasing insulin level in plasma and pancreas and increased active GLP-1 as well as insulin level in diabetic rats after OGTT. GLP-1 content was significantly increased in ileum and colon by inhibiting alpha-glucosidase. Involvement of GLP-1 in antihyperglycemic effect of AEATP was confirmed by using GLP-1 antagonist. Moreover, AEATP significantly improved dyslipidemia in diabetic rats. HPLC analysis of A. tortilis polysaccharide comprised four specific monosaccharides (Rhamnose, Glucuronic acid, glucose and galactose) and FTIR spectrum shown band at 3430.6 cm-1 (O–H stretching), 2940.3 cm−1 (C–H linkage), 1630.4 cm−1 (carbonyl stretching), 1410 cm−1 (uronic acid) and 1030.5 cm−1 (glycosidic linkage). Conclusion It can be concluded that antidiabetic effect of AEATP is through the modulation of GLP-1 level in plasma and intestinal tissue via alpha glucosidase inhibition.
Collapse
Affiliation(s)
- Pradeep Kumar Bhateja
- Department of Pharmacology, Bhojia Dental College and Hospitals, Bhud, Baddi, Himachal Pradesh, 173205, India
| | - Anu Kajal
- Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133207, Haryana, India
| | - Randhir Singh
- Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133207, Haryana, India.
| |
Collapse
|
12
|
Wang S, Lu Z, Wang Y, Zhang T, He X. Metalloproteins and apolipoprotein C: candidate plasma biomarkers of T2DM screened by comparative proteomics and lipidomics in ZDF rats. Nutr Metab (Lond) 2020; 17:66. [PMID: 32817751 PMCID: PMC7425165 DOI: 10.1186/s12986-020-00488-2] [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: 05/09/2020] [Accepted: 08/03/2020] [Indexed: 12/13/2022] Open
Abstract
Background Early diagnosis of type 2 diabetes mellitus (T2DM) is still difficult. Screening of plasma biomarkers has great significance of optimizing diagnosis and predicting the complications of T2DM. Methods We used a special diet, Purina #5008, to induce diabetes in Zucker leptin receptor gene-deficient rats (fa/fa) to establish Zucker diabetic fatty (ZDF) rats, simulating the early stage of T2DM. The differentially expressed proteins (DEP) and lipids (DEL), as potential biomarkers, were screened to compare the plasma expression levels in ZDF rats and their basic diet-fed wild-type controls (fa/+) by Tandem Mass Tags (TMT) and liquid chromatography-tandem mass spectrometry. Results These two groups had different plasma proteins and lipids profiles consisting of 84 DEPs and, 179 DELs identified in the positive ion mode and 178 DELs in the negative ion mode, respectively. Enrichment analysis of these different indicators showed that oxidative stress, insulin resistance and metabolic disorders of glycan and lipid played an important role in generating the difference. Some markers can be used as candidate biomarkers in prediction and treatments of T2DM, such as ceruloplasmin, apolipoprotein C-I, apolipoprotein C-II and apolipoprotein C-IV. Conclusion These plasma differences help to optimize the diagnosis and predict the complications of T2DM, although this remains to be verified in the crowd. Trace elements related-metalloproteins, such as ceruloplasmin, and lipid metabolism and transport-related apolipoprotein C are expected to be candidate biomarkers of T2DM and should be given more attention.
Collapse
Affiliation(s)
- Shuai Wang
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong China
| | - Zhiyuan Lu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong China
| | - Yuxin Wang
- Department of Physical and Chemical Inspection, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong China
| | - Tianran Zhang
- Department of Physical and Chemical Inspection, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong China
| | - Xiaodong He
- Department of Physical and Chemical Inspection, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong China.,Shandong Provincial Key Laboratory of Infection and Immunity, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, 250012 Shandong China
| |
Collapse
|
13
|
Lee MS, Chyau CC, Wang CP, Wang TH, Chen JH, Lin HH. Flavonoids Identification and Pancreatic Beta-Cell Protective Effect of Lotus Seedpod. Antioxidants (Basel) 2020; 9:antiox9080658. [PMID: 32722185 PMCID: PMC7466071 DOI: 10.3390/antiox9080658] [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: 06/11/2020] [Revised: 07/07/2020] [Accepted: 07/21/2020] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is highly associated with the development of diabetes mellitus (DM), especially pancreatic beta-cell injury. Flavonoids derived from plants have caused important attention in the prevention or treatment of DM. Lotus seedpod belongs to a traditional Chinese herbal medicine and has been indicated to possess antioxidant, anti-age, anti-glycative, and hepatoprotective activities. The purpose of this study was to demonstrate the pancreatic beta-cell protective effects of lotus seedpod aqueous extracts (LSE) against oxidative injury. According to HPLC/ESI-MS-MS method, LSE was confirmed to have flavonoids derivatives, especially quercetin-3-glucuronide (Q3G). In vitro, LSE dose-dependently improved the survival and function of rat pancreatic beta-cells (RIN-m5F) from hydrogen peroxide (H2O2)-mediated loss of cell viability, impairment of insulin secretion, and promotion of oxidative stress. LSE showed potential in decreasing the H2O2-induced occurrence of apoptosis. In addition, H2O2-triggered acidic vesicular organelle formation and microtubule-associated protein light chain 3 (LC3)-II upregulation, markers of autophagy, were increased by LSE. Molecular data explored that antiapoptotic and autophagic effects of LSE, comparable to that of Q3G, might receptively be mediated via phospho-Bcl-2-associated death promoter (p-Bad)/B-cell lymphoma 2 (Bcl-2) and class III phosphatidylinositol-3 kinase (PI3K)/LC3-II signal pathway. In vivo, LSE improved the DM symptoms and pancreatic cell injury better than metformin, a drug that is routinely prescribed to treat DM. These data implied that LSE induces the autophagic signaling, leading to protect beta-cells from oxidative stress-related apoptosis and injury.
Collapse
Affiliation(s)
- Ming-Shih Lee
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (M.-S.L.); (C.-P.W.); (T.-H.W.)
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Charng-Cherng Chyau
- Research Institute of Biotechnology, Hungkuang University, Taichung City 43302, Taiwan;
| | - Chi-Ping Wang
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (M.-S.L.); (C.-P.W.); (T.-H.W.)
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Ting-Hsuan Wang
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (M.-S.L.); (C.-P.W.); (T.-H.W.)
| | - Jing-Hsien Chen
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
- Department of Nutrition, Chung Shan Medical University, Taichung City 40201, Taiwan
- Correspondence: (J.-H.C.); (H.-H.L.); Tel.: +886-424-730-022 (ext. 12195) (J.-H.C.); +886-424-730-022 (ext. 12410) (H.-H.L.)
| | - Hui-Hsuan Lin
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (M.-S.L.); (C.-P.W.); (T.-H.W.)
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
- Correspondence: (J.-H.C.); (H.-H.L.); Tel.: +886-424-730-022 (ext. 12195) (J.-H.C.); +886-424-730-022 (ext. 12410) (H.-H.L.)
| |
Collapse
|
14
|
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.
Collapse
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
Collapse
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
| |
Collapse
|
15
|
Abdel-Kader MS, Soliman GA, Abdel-Rahman RF, Saeedan AS, Abd-Elsalam RM, Ogaly HA. Effect of olive leaves extract on the antidiabetic effect of glyburide for possible herb-drug interaction. Saudi Pharm J 2019; 27:1182-1195. [PMID: 31885478 PMCID: PMC6921200 DOI: 10.1016/j.jsps.2019.10.001] [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] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 10/02/2019] [Indexed: 02/02/2023] Open
Abstract
The concomitant use of olive leaves (OL) and glyburide (GLB) is a possible therapy for diabetic patients. However, there is no report about the effect of OL on the antidiabetic effect of GLB till now. In the current study, the possible interaction of olive leaves extract (OLE) with GLB was assessed to determine if there was any pharmacological benefit over GLB alone. Seven groups of male Sprague Dawley rats were used. Normal rats of the 1st group treated with 2 mL/kg of 3% Tween 80 (vehicle). The 2nd–5th groups were diabetic rats received vehicle, GLB (5 mg/kg), OLE low dose and OLE high dose respectively, while the 6th–7th groups administered combinations of GLB plus OLE low dose and GLB plus OLE high dose, respectively. All treatments were administered orally once daily for 8 weeks. The use of GLB+OLE-500 obviously improved fasting blood glucose (FBG), insulin and glycated hemoglobin (HbA1c) in diabetic rats (95.5 ± 5.55 mg/dL, 6.8 ± 0.16 mg/dL and 6.1 ± 0.29%, respectively) compared to those treated with GLB monotherapy (140.0 ± 6.36 mg/dL, 5.4 ± 0.19 mg/dL and 7.0 ± 0.20%, respectively). The lipid profile [triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C)] was significantly improved in diabetic rats exposed to GLB+OLE-500 (35.6 ± 1.51 mg/dL, 48.5 ± 2.74 mg/dL, 25.1 ± 1.21 mg/dL and 17.0 ± 0.82 mg/dL, respectively) in comparison with diabetic group exposed to GLB alone (43.2 ± 2.15 mg/dL, 56.8 ± 2.14 mg/dL, 18.6 ± 0.96 mg/dL, 23.0 ± 1.26 mg/dL, respectively). Additionally, the benefit impacts of GLB+OLE-500GLB+OLE-500 therapy on the antioxidant and lipid peroxidation parameters in the pancreatic tissues of diabetic rats were higher than those of GLB monotherapy. Moreover, GLB plus OLE-500 combination had the greatest effect on restoration of the insulin content of Beta (β) cells and reduction of the glucagon and somatostatin of Alpha (α) and Delta (δ) endocrine cells in the pancreatic islets among the different treatment. The current study suggests that OL and GLB combination could cause herb-drug interactions through modulation of insulin receptor (INR), glucose transporter 2 (Slc2a2) and peroxisome proliferator-activated receptor α (PPAR-α) genes expression in the liver of diabetic rats.
Collapse
Affiliation(s)
- Maged S Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia.,Department of Pharmacognosy, College of Pharmacy, Alexandria University, Alexandria 21215, Egypt
| | - Gamal A Soliman
- Department of Pharmacology, College of Pharmacy, Prince Sattam bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia.,Department of Pharmacology, College of Veterinary Medicine, Cairo University, Giza, Egypt
| | | | - Abdulaziz S Saeedan
- Department of Pharmacology, College of Pharmacy, Prince Sattam bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia
| | - Reham M Abd-Elsalam
- Department of Pathology, College of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Hanan A Ogaly
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia.,Department of Biochemistry, College of Veterinary Medicine, Cairo University, Giza, Egypt
| |
Collapse
|
16
|
Magdaleno F, Blajszczak CC, Charles-Niño CL, Guadrón-Llanos AM, Vázquez-Álvarez AO, Miranda-Díaz AG, Nieto N, Islas-Carbajal MC, Rincón-Sánchez AR. Aminoguanidine reduces diabetes-associated cardiac fibrosis. Exp Ther Med 2019; 18:3125-3138. [PMID: 31572553 DOI: 10.3892/etm.2019.7921] [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: 01/30/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023] Open
Abstract
Aminoguanidine (AG) inhibits advanced glycation end products (AGEs) and advanced oxidation protein products (AOPP) accumulated as a result of excessive oxidative stress in diabetes. However, the molecular mechanism by which AG reduces AGE-associated damage in diabetes is not well understood. Thus, we investigated whether AG supplementation mitigates oxidative-associated cardiac fibrosis in rats with type 2 diabetes mellitus (T2DM). Forty-five male Wistar rats were divided into three groups: Control, T2DM and T2DM+AG. Rats were fed with a high-fat, high-carbohydrate diet (HFCD) for 2 weeks and rendered diabetic using low-dose streptozotocin (STZ) (20 mg/kg), and one group was treated with AG (20 mg/kg) up to 25 weeks. In vitro experiments were performed in primary rat myofibroblasts to confirm the antioxidant and antifibrotic effects of AG and to determine if blocking the receptor for AGEs (RAGE) prevents the fibrogenic response in myofibroblasts. Diabetic rats exhibited an increase in cardiac fibrosis resulting from HFCD and STZ injections. By contrast, AG treatment significantly reduced cardiac fibrosis, α-smooth muscle actin (αSMA) and oxidative-associated Nox4 and Nos2 mRNA expression. In vitro challenge of myofibroblasts with AG under T2DM conditions reduced intra- and extracellular collagen type I expression and Pdgfb, Tgfβ1 and Col1a1 mRNAs, albeit with similar expression of Tnfα and Il6 mRNAs. This was accompanied by reduced phosphorylation of ERK1/2 and SMAD2/3 but not of AKT1/2/3 and STAT pathways. RAGE blockade further attenuated collagen type I expression in AG-treated myofibroblasts. Thus, AG reduces oxidative stress-associated cardiac fibrosis by reducing pERK1/2, pSMAD2/3 and collagen type I expression via AGE/RAGE signaling in T2DM.
Collapse
Affiliation(s)
- Fernando Magdaleno
- Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico.,Department of Pathology, College of Medicine, University of Illinois at Chicago, IL 60612, USA
| | | | - Claudia Lisette Charles-Niño
- Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico.,Department of Microbiology and Pathology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| | - Alma Marlene Guadrón-Llanos
- Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| | - Alan Omar Vázquez-Álvarez
- Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| | - Alejandra Guillermina Miranda-Díaz
- Institute of Experimental and Clinical Therapeutics, Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| | - Natalia Nieto
- Department of Pathology, College of Medicine, University of Illinois at Chicago, IL 60612, USA
| | - María Cristina Islas-Carbajal
- Institute of Experimental and Clinical Therapeutics, Department of Physiology, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| | - Ana Rosa Rincón-Sánchez
- Institute of Molecular Biology and Gene Therapy, Department of Molecular Biology and Genomics, University Center of Health Sciences, Guadalajara University, Guadalajara, Jalisco 44340, Mexico
| |
Collapse
|
17
|
Abdel-Rahman RF, Soliman GA, Saeedan AS, Ogaly HA, Abd-Elsalam RM, Alqasoumi SI, Abdel-Kader MS. Molecular and biochemical monitoring of the possible herb-drug interaction between Momordica charantia extract and glibenclamide in diabetic rats. Saudi Pharm J 2019; 27:803-816. [PMID: 31516323 PMCID: PMC6733788 DOI: 10.1016/j.jsps.2019.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/13/2019] [Indexed: 12/14/2022] Open
Abstract
Momordica charantia is used in folk medicine to manage diabetes mellitus. In this study, we investigated the possible herb-drug interaction between M. charantia fruit extract (MCFE) and glibenclamide (GLB) in streptozotocin-diabetic rats. Rats were divided into 7 groups. The 1st group received 3% Tween 80. The 2nd–5th groups were diabetic rats received vehicle, GLB (5 mg/kg), MCFE (250 and 500 mg/kg), respectively. The 6th–7th groups administered GLB plus MCFE (250 and 500 mg/kg), respectively. After 8 weeks, fasting blood glucose (FBG), insulin and glycosylated hemoglobin (HbA1c) levels were assessed. Histopathological and immunohistochemical examinations of the pancreases were done. Quantitative RT-PCR was used to analyze hepatic mRNA expression of insulin receptor (INR), glucose transporter 2 (Slc2a2) and peroxisome proliferator-activated receptor α (PPAR-α) genes. All medicaments greatly reduced FBG in diabetic rats when compared with diabetic control group. GLB plus MCFE combination was better than GLB alone in improving levels of insulin and HbA1c. All medicaments restored insulin content of pancreatic β-cells and reduced glucagon and somatostatin of alpha and delta endocrine cells. Moreover, GLB plus MCFE-500 was the most efficient in restoring INR, Slc2a2 and PPAR-α mRNA expression to their normal levels. In conclusion, MCFE in combination with GLB gives greater glycemic improvement than GLB monotherapy.
Collapse
Affiliation(s)
| | - Gamal A Soliman
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia.,Department of Pharmacology, College of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Abdulaziz S Saeedan
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Hanan A Ogaly
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia.,Department of Biochemistry, College of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Reham M Abd-Elsalam
- Department of Pathology, College of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Saleh I Alqasoumi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Maged S Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia.,Department of Pharmacognosy, College of Pharmacy, Alexandria University, Alexandria 21215, Egypt
| |
Collapse
|
18
|
Brändli-Baiocco A, Balme E, Bruder M, Chandra S, Hellmann J, Hoenerhoff MJ, Kambara T, Landes C, Lenz B, Mense M, Rittinghausen S, Satoh H, Schorsch F, Seeliger F, Tanaka T, Tsuchitani M, Wojcinski Z, Rosol TJ. Nonproliferative and Proliferative Lesions of the Rat and Mouse Endocrine System. J Toxicol Pathol 2018; 31:1S-95S. [PMID: 30158740 PMCID: PMC6108091 DOI: 10.1293/tox.31.1s] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The INHAND (International Harmonization of Nomenclature and Diagnostic Criteria for
Lesions in Rats and Mice) Project (www.toxpath.org/inhand.asp) is a joint initiative among
the Societies of Toxicological Pathology from Europe (ESTP), Great Britain (BSTP), Japan
(JSTP) and North America (STP) to develop an internationally accepted nomenclature for
proliferative and nonproliferative lesions in laboratory animals. The purpose of this
publication is to provide a standardized nomenclature for classifying microscopic lesions
observed in the endocrine organs (pituitary gland, pineal gland, thyroid gland,
parathyroid glands, adrenal glands and pancreatic islets) of laboratory rats and mice,
with color photomicrographs illustrating examples of the lesions. The standardized
nomenclature presented in this document is also available electronically on the internet
(http://www.goreni.org/). Sources of material included histopathology databases from
government, academia, and industrial laboratories throughout the world. Content includes
spontaneous and aging lesions as well as lesions induced by exposure to test materials. A
widely accepted and utilized international harmonization of nomenclature for endocrine
lesions in laboratory animals will decrease confusion among regulatory and scientific
research organizations in different countries and provide a common language to increase
and enrich international exchanges of information among toxicologists and
pathologists.
Collapse
Affiliation(s)
- Annamaria Brändli-Baiocco
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center, Basel, Switzerland
| | | | - Marc Bruder
- Compugen, Inc., Nonclinical Safety, South San Francisco, California, USA
| | | | | | - Mark J Hoenerhoff
- In Vivo Animal Core, Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, Michigan USA
| | | | - Christian Landes
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center, Basel, Switzerland
| | - Barbara Lenz
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center, Basel, Switzerland
| | | | | | - Hiroshi Satoh
- Iwate University, Faculty of Agriculture, Iwate, Japan
| | | | - Frank Seeliger
- AstraZeneca Pathology, Drug Safety and Metabolism, IMED Biotech Unit, Gothenburg, Sweden
| | - Takuji Tanaka
- Tohkai Cytopathology Institute, Cancer Research and Prevention, Gifu, Japan
| | - Minoru Tsuchitani
- LSI Medience Corporation, Nonclinical Research Center, Ibaraki, Japan
| | | | - Thomas J Rosol
- Ohio University, Department of Biomedical Sciences, Athens, Ohio, USA
| |
Collapse
|
19
|
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.
Collapse
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.
| |
Collapse
|
20
|
Asrafuzzaman M, Cao Y, Afroz R, Kamato D, Gray S, Little PJ. Animal models for assessing the impact of natural products on the aetiology and metabolic pathophysiology of Type 2 diabetes. Biomed Pharmacother 2017; 89:1242-1251. [PMID: 28320091 DOI: 10.1016/j.biopha.2017.03.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 01/24/2023] Open
Abstract
Type 2 diabetes mellitus is a complex and heterogeneous disorder which in its most common manifestation arises from insulin resistance and later insulin insufficiency. Type 2 diabetes is characterised by impaired insulin sensitivity and diagnosed as hyperglycaemia. Because of its cardiovascular consequences, Type 2 diabetes represents one of the world's leading causes of mortality and morbidity. Drug discovery and development are required to produce better ways to prevent, treat and manage diabetes and its complications. Diabetes is a human, not an animal disease, so animals do not get Type 2 diabetes. However there are animal models which are variously suitable for the investigation of new agents for the treatment of Type 2 diabetes. In this Review we have examined the various models that are available for the study of natural products with a focus on models (genetic, nutritional and spontaneous) for the metabolic abnormities of diabetes. These models are also relevant to the investigation of Western medicines for the treatment of diabetes. A suitable experimental model plays an important role in drug discovery for translational studies leading to increased understanding of the molecular basis and management of diabetes.
Collapse
Affiliation(s)
- Md Asrafuzzaman
- Asian Network of Research on Antidiabetic Plants (ANRAP), Bangladesh University of Health Science, Mirpur, Dhaka 1216, Bangladesh
| | - Yingnan Cao
- Department of Pharmacy, Xinhua College of Sun Yat-sen University,Tianhe District, Guangzhou 510520, China
| | - Rizwana Afroz
- School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4102 Australia
| | - Danielle Kamato
- School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4102 Australia
| | - Susan Gray
- School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4102 Australia
| | - Peter J Little
- Department of Pharmacy, Xinhua College of Sun Yat-sen University,Tianhe District, Guangzhou 510520, China; School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4102 Australia.
| |
Collapse
|
21
|
Szekalska M, Sosnowska K, Zakrzeska A, Kasacka I, Lewandowska A, Winnicka K. The Influence of Chitosan Cross-linking on the Properties of Alginate Microparticles with Metformin Hydrochloride-In Vitro and In Vivo Evaluation. Molecules 2017; 22:E182. [PMID: 28117747 PMCID: PMC6155789 DOI: 10.3390/molecules22010182] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/10/2017] [Accepted: 01/18/2017] [Indexed: 11/17/2022] Open
Abstract
Sodium alginate is a polymer with unique ability to gel with different cross-linking agents in result of ionic and electrostatic interactions. Chitosan cross-linked alginate provides improvement of swelling and mucoadhesive properties and might be used to design sustained release dosage forms. Therefore, the aim of this research was to develop and evaluate possibility of preparing chitosan cross-linked alginate microparticles containing metformin hydrochloride by the spray-drying method. In addition, influence of cross-linking agent on the properties of microparticles was evaluated. Formulation of microparticles prepared by the spray drying of 2% alginate solution cross-linked by 0.1% chitosan was characterized by good mucoadhesive properties, high drug loading and prolonged metformin hydrochloride release. It was shown that designed microparticles reduced rat glucose blood level, delayed absorption of metformin hydrochloride and provided stable plasma drug concentration. Additionally, histopathological studies of pancreas, liver and kidneys indicated that all prepared microparticles improved degenerative changes in organs of diabetic rats. Moreover, no toxicity effect and no changes in rats behavior after oral administration of chitosan cross-linked alginate microparticles were noted.
Collapse
Affiliation(s)
- Marta Szekalska
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| | - Katarzyna Sosnowska
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| | - Agnieszka Zakrzeska
- Department of Biopharmacy, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| | - Irena Kasacka
- Department of Histology and Cytophysiology, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| | - Alicja Lewandowska
- Department of Histology and Cytophysiology, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| | - Katarzyna Winnicka
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, Białystok 15-222, Poland.
| |
Collapse
|
22
|
Zhai X, Chen X, Lu J, Zhang Y, Sun X, Huang Q, Wang Q. Hydrogen-rich saline improves non‑alcoholic fatty liver disease by alleviating oxidative stress and activating hepatic PPARα and PPARγ. Mol Med Rep 2017; 15:1305-1312. [PMID: 28098910 DOI: 10.3892/mmr.2017.6120] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 01/05/2016] [Indexed: 12/12/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) comprises a range of liver diseases, between steatosis and non‑alcoholic steatohepatitis and liver cirrhosis, which are closely associated with diabetes mellitus. Previous studies have indicated that oxidative stress is a key factor in the development of NAFLD. Molecular hydrogen (H2) may ameliorate oxidative stress injuries by selectively neutralizing peroxynitrite and hydroxyl radicals. The present study evaluated the effects of H2 on NAFLD in rats and concluded that H2‑rich saline had significant therapeutic effects on NAFLD induced by hyperglycemia and hyperlipidemia, as demonstrated by hematoxylin and eosin and terminal deoxynucleotidyl-transferase‑mediated dUTP nick end labeling staining. H2‑rich saline improved fasting blood glucose, fasting insulin, insulin sensitivity and glucose tolerance, and lowered the expression levels of tumor necrosis factor alpha, interleukin‑1 beta, 3‑nitrotyrosine and 8‑hydroxy‑2'‑deoxyguanosine in the liver. In addition, the present study revealed that H2‑rich saline could significantly increase peroxisome proliferator‑activated receptor (PPAR) α and PPARγ expression in hepatocytes. In conclusion, H2‑rich saline may significantly improve NAFLD, possibly by reducing oxidative stress and activating hepatic PPARα and PPARγ expression.
Collapse
Affiliation(s)
- Xiao Zhai
- Graduate Management Unit, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Xiao Chen
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Jiancan Lu
- Department of Endocrinology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Yaping Zhang
- Department of Endocrinology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Xuejun Sun
- Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, P.R. China
| | - Qin Huang
- Department of Endocrinology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Qijin Wang
- Department of Endocrinology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| |
Collapse
|
23
|
Ito S, Sano Y, Nagasawa K, Matsuura N, Yamada Y, Uchinaka A, Murohara T, Nagata K. Highly purified eicosapentaenoic acid ameliorates cardiac injury and adipose tissue inflammation in a rat model of metabolic syndrome. Obes Sci Pract 2016; 2:318-329. [PMID: 27708849 PMCID: PMC5043479 DOI: 10.1002/osp4.50] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 06/01/2016] [Accepted: 06/06/2016] [Indexed: 01/19/2023] Open
Abstract
INTRODUCTION n-3 Polyunsaturated fatty acids such as eicosapentaenoic acid (EPA), which are abundant in fish oil, have been shown to delay the onset of cardiovascular events. We previously established DahlS.Z-Leprfa/Leprfa (DS/obese) rats, which are derived from a cross between Dahl salt-sensitive and Zucker rats, as a model of metabolic syndrome. This study has now explored the influence of highly purified EPA on cardiac and adipose tissue pathophysiology in this animal model. MATERIALS AND METHODS DS/obese rats were administered EPA (300 or 1,000 mg kg-1 d-1, per os) or vehicle from age 9 to 13 weeks. Homozygous lean (DahlS.Z-Lepr+/Lepr+, or DS/lean) littermates were studied as controls. RESULTS Whereas EPA had no effect on body weight, food intake or systolic blood pressure in DS/obese rats, it attenuated cardiac fibrosis, diastolic dysfunction, oxidative stress and inflammation in these animals. In addition, EPA did not affect insulin resistance but reduced adipocyte hypertrophy and inflammation in visceral fat of DS/obese rats. Moreover, EPA increased circulating levels of adiponectin as well as attenuated both the down-regulation of AMP-activated protein kinase phosphorylation and the up-regulation of phosphorylation of the p65 subunit of nuclear factor-kB in the heart of DS/obese rats. CONCLUSIONS Treatment of DS/obese rats with EPA did not affect hypertension but reduced cardiac fibrosis and diastolic dysfunction, with the latter effects being accompanied by AMP-activated protein kinase activation and inactivation of nuclear factor-kB signalling in the heart, possibly as a result of an increase in adiponectin secretion. EPA may be suitable for the treatment of cardiac injury associated with metabolic syndrome.
Collapse
Affiliation(s)
- S Ito
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - Y Sano
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - K Nagasawa
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - N Matsuura
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - Y Yamada
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - A Uchinaka
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - T Murohara
- Department of Cardiology Nagoya University Graduate School of Medicine Nagoya Japan
| | - K Nagata
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| |
Collapse
|
24
|
Liu L, Lv G, Ning C, Yang YE, Zhu J. Therapeutic effects of 1,25-dihydroxyvitamin D3 on diabetes-induced liver complications in a rat model. Exp Ther Med 2016; 11:2284-2292. [PMID: 27284312 PMCID: PMC4887922 DOI: 10.3892/etm.2016.3242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 03/10/2016] [Indexed: 12/15/2022] Open
Abstract
It has been suggested that 1,25-dihydroxyvitamin D3 (vitamin D) plays a protective role against inflammation and insulin resistance (IR) in type 2 diabetes mellitus (T2DM). The present study investigate the hypothesis that vitamin D may exert beneficial effects on the liver in a rat model of T2DM by regulating the expression of inflammation-related cytokines and ameliorating IR induced by inflammation. Normal control group rats were fed a basic diet (NC). Experimental rats received a high-fat diet for 8 weeks and were then injected with streptozotocin (STZ) to induce T2DM. Half of the T2DM model rats received vitamin D (0.03 µg/kg/day) for 8 weeks (vitamin D-treated group; VD; n=11), while the other (T2DM group; DM; n=10) and NC group received an equivalent quantity of peanut oil. Following sacrifice, fasting plasma glucose (FPG) and fasting insulin (FINS) were recorded and homeostasis model assessment of IR (HOMA-IR) was calculated. Liver histopathology was examined using hematoxylin and eosin staining. The levels of the inflammatory cytokines C-Jun N-terminal kinase, C-Jun, tumor necrosis factor-α and interleukin-1β were measured using immunohistology, quantitative polymerase chain reaction and western blot analyses. The results revealed that treatment with vitamin D markedly alleviated the pathological alterations of liver and reduced the expression of inflammatory cytokines at the protein and mRNA levels. Furthermore, decreased levels of FPG, HOMA-IR and increased FINS were detected. In conclusion, the results of the present study indicate that vitamin D has therapeutic effects on diabetes-induced liver complications in T2DM model rats, which may involve the modulation of the inflammatory response, attenuating the crosstalk' between inflammation and IR and ameliorating hyperglycemic state.
Collapse
Affiliation(s)
- Lina Liu
- Department of Endocrinology, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Guodong Lv
- Institute of Research, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Conghua Ning
- Department of Endocrinology, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Y E Yang
- Department of Endocrinology, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Jun Zhu
- Department of Endocrinology, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| |
Collapse
|
25
|
Hydroxychloroquine hindering of diabetic isletopathy carries its signature on the inflammatory cytokines. J Mol Histol 2016; 47:183-93. [PMID: 26872459 DOI: 10.1007/s10735-016-9664-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/11/2016] [Indexed: 01/07/2023]
Abstract
Hydroxychloroquine (HCQ) is supposed to have favorable effects in diabetes mellitus (DM). However no previous experimental studies had investigated its effect on the structure of the endocrine pancreas, islets of Langerhans (IOL), in DM. In addition, the mechanism by which HCQ acts in DM is not well understood. In this study, we hypothesized that the possible favorable effects of HCQ in DM at the structural as well as at metabolic levels could be accomplished, in part, by its anti-inflammatory action. A total of 45 rats were divided equally into; control, DM and HCQ + DM groups (received citrate buffer, 27.5 mg/kg single ip STZ and STZ + HCQ 200 mg/kg/w respectively). After 4 weeks, samples from pancreas were histologically studied for the resulting changes. The HCQ + DM group showed preservation of IOL structure, a significant increase (p < 0.05) in the β-cell area, %, mass, IOL proliferation and neogenesis as well as correction of the significantly increased (p < 0.05) α-cell area, %, disturbed glucose homeostasis and lipid profile compared with the DM group. The significantly elevated inflammatory cytokines in the latter were lowered in the HCQ + DM group. Therefore, HCQ showed definite favorable effects on the histological as well as the metabolic profiles in DM which may be partly attributed to its anti-inflammatory action. This notable improvement of DM by HCQ deserves further studies to distinctly approve HCQ as a promising oral hypoglycemic agent.
Collapse
|
26
|
Han LP, Li CJ, Sun B, Xie Y, Guan Y, Ma ZJ, Chen LM. Protective Effects of Celastrol on Diabetic Liver Injury via TLR4/MyD88/NF-κB Signaling Pathway in Type 2 Diabetic Rats. J Diabetes Res 2016; 2016:2641248. [PMID: 27057550 PMCID: PMC4745324 DOI: 10.1155/2016/2641248] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 12/05/2015] [Accepted: 12/30/2015] [Indexed: 02/06/2023] Open
Abstract
Immune and inflammatory pathways play a central role in the pathogenesis of diabetic liver injury. Celastrol is a potent immunosuppressive and anti-inflammatory agent. So far, there is no evidence regarding the mechanism of innate immune alterations of celastrol on diabetic liver injury in type 2 diabetic animal models. The present study was aimed at investigating protective effects of celastrol on the liver injury in diabetic rats and at elucidating the possible involved mechanisms. We analyzed the liver histopathological and biochemical changes and the expressions of TLR4 mediated signaling pathway. Compared to the normal control group, diabetic rats were found to have obvious steatohepatitis and proinflammatory cytokine activities were significantly upregulated. Celastrol-treated diabetic rats show reduced hepatic inflammation and macrophages infiltration. The expressions of TLR4, MyD88, NF-κB, and downstream inflammatory factors IL-1β and TNFα in the hepatic tissue of treated rats were downregulated in a dose-dependent manner. We firstly found that celastrol treatment could delay the progression of diabetic liver disease in type 2 diabetic rats via inhibition of TLR4/MyD88/NF-κB signaling cascade pathways and its downstream inflammatory effectors.
Collapse
Affiliation(s)
- Li-ping Han
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Chun-jun Li
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Bei Sun
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Yun Xie
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Yue Guan
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Ze-jun Ma
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Li-ming Chen
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Ministry of Health, Metabolic Disease Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
- *Li-ming Chen:
| |
Collapse
|
27
|
Vandal M, White PJ, Chevrier G, Tremblay C, St.‐Amour I, Planel E, Marette A, Calon F. Age‐dependent impairment of glucose tolerance in the 3xTg‐AD mouse model of Alzheimer's disease. FASEB J 2015; 29:4273-84. [DOI: 10.1096/fj.14-268482] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 06/22/2015] [Indexed: 01/21/2023]
Affiliation(s)
- Milene Vandal
- Faculté de PharmacieUniversité LavalQuébecQuébecCanada
- Institut des Nutraceutiques et des Aliments Fonctionnels, Université LavalQuébecQuébecCanada
- Axe NeurosciencesCentre de Recherche du Centre Hospitalier de l'Université Laval (CHUL)QuébecQuébecCanada
| | - Phillip J. White
- Faculté de PharmacieUniversité LavalQuébecQuébecCanada
- Département de Medicine, Axe de Cardiologie, Faculté de MédicineUniversité LavalQuébecQuébecCanada
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology InstituteDurhamNorth CarolinaUSA
| | - Geneviève Chevrier
- Département de Medicine, Axe de Cardiologie, Faculté de MédicineUniversité LavalQuébecQuébecCanada
- Institut Universitaire de Pneumologie et de CardiologieQuébecQuébecCanada
| | - Cyntia Tremblay
- Axe NeurosciencesCentre de Recherche du Centre Hospitalier de l'Université Laval (CHUL)QuébecQuébecCanada
| | - Isabelle St.‐Amour
- Faculté de PharmacieUniversité LavalQuébecQuébecCanada
- Axe NeurosciencesCentre de Recherche du Centre Hospitalier de l'Université Laval (CHUL)QuébecQuébecCanada
| | - Emmanuel Planel
- Axe NeurosciencesCentre de Recherche du Centre Hospitalier de l'Université Laval (CHUL)QuébecQuébecCanada
| | - Andre Marette
- Institut des Nutraceutiques et des Aliments Fonctionnels, Université LavalQuébecQuébecCanada
- Département de Medicine, Axe de Cardiologie, Faculté de MédicineUniversité LavalQuébecQuébecCanada
- Institut Universitaire de Pneumologie et de CardiologieQuébecQuébecCanada
| | - Frederic Calon
- Faculté de PharmacieUniversité LavalQuébecQuébecCanada
- Institut des Nutraceutiques et des Aliments Fonctionnels, Université LavalQuébecQuébecCanada
- Axe NeurosciencesCentre de Recherche du Centre Hospitalier de l'Université Laval (CHUL)QuébecQuébecCanada
| |
Collapse
|
28
|
Ma H, Cui F, Dong JJ, You GP, Yang XJ, Lu HD, Huang YL. Therapeutic effects of globular adiponectin in diabetic rats with nonalcoholic fatty liver disease. World J Gastroenterol 2014; 20:14950-14957. [PMID: 25356056 PMCID: PMC4209559 DOI: 10.3748/wjg.v20.i40.14950] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 02/14/2014] [Accepted: 06/13/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the therapeutic role of globular adiponectin (gAd) in high-fat diet/streptozotocin (STZ)-induced type 2 diabetic rats with nonalcoholic fatty liver disease (NAFLD).
METHODS: Seven rats were fed a basic diet (normal control group; NC) during the experiment. Experimental rats (14 rats) were given a high-fat diet for 4 wk and were then injected with STZ to induce type 2 diabetes mellitus (T2DM) and NAFLD. Half of the T2DM/NAFLD rats were randomly injected intraperitoneally with gAd for 7 d (gAd-treated group), while the other 7 rats (T2DM/NAFLD group) received 0.9% saline. Plasma biochemical parameters and insulin concentrations were measured. Liver histopathology was examined by hematoxylin-eosin staining. Insulin receptor expression in the liver was analyzed by immunohistochemical staining, Western blot and quantitative real-time reverse transcription polymerase chain reaction analysis.
RESULTS: Compared to the control group, the T2DM/NAFLD group had increased levels of glucolipid and decreased levels of insulin. Plasma glucose and lipid levels were decreased in the gAd-treated group, while serum insulin levels increased. The expression of insulin receptor in the T2DM/NAFLD group increased compared with the NC group, and gAd downregulated insulin receptor expression in the livers of T2DM/NAFLD rats. Steatosis of the liver was alleviated in the gAd-treated group compared to the T2DM/NAFLD group (NAS 1.39 ± 0.51 vs 1.92 ± 0.51, P < 0.05).
CONCLUSION: Globular adiponectin exerts beneficial effects in T2DM rats with NAFLD by promoting insulin secretion, mediating glucolipid metabolism, regulating insulin receptor expression and alleviating hepatic steatosis.
Collapse
MESH Headings
- Adiponectin/administration & dosage
- Adiponectin/pharmacology
- Animals
- Biomarkers/blood
- Blood Glucose/metabolism
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/chemically induced
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/genetics
- Diet, High-Fat
- Hypoglycemic Agents/administration & dosage
- Hypoglycemic Agents/pharmacology
- Injections, Intraperitoneal
- Insulin/blood
- Lipids/blood
- Liver/drug effects
- Liver/metabolism
- Liver/pathology
- Male
- Non-alcoholic Fatty Liver Disease/blood
- Non-alcoholic Fatty Liver Disease/drug therapy
- Non-alcoholic Fatty Liver Disease/etiology
- Non-alcoholic Fatty Liver Disease/genetics
- Non-alcoholic Fatty Liver Disease/pathology
- RNA, Messenger/metabolism
- Rats, Wistar
- Receptor, Insulin/drug effects
- Receptor, Insulin/genetics
- Receptor, Insulin/metabolism
- Streptozocin
Collapse
|
29
|
Ramos-Rodriguez JJ, Ortiz-Barajas O, Gamero-Carrasco C, de la Rosa PR, Infante-Garcia C, Zopeque-Garcia N, Lechuga-Sancho AM, Garcia-Alloza M. Prediabetes-induced vascular alterations exacerbate central pathology in APPswe/PS1dE9 mice. Psychoneuroendocrinology 2014; 48:123-35. [PMID: 24998414 DOI: 10.1016/j.psyneuen.2014.06.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
Abstract
Age remains the main risk factor for developing Alzheimer's disease (AD) although certain metabolic alterations, including prediabetes and hyperinsulinemia, also increase this risk. We present a mouse model of AD (APPswe/PS1dE9 mouse) with severe hyperinsulinemia induced by long-term high fat diet (HFD) treatment. After 23 weeks on HFD learning and memory processes were compromised. We observed a significant increase in tau hyperphosphorylation and Aβ pathology, including Aβ levels and amyloid burden. Microglia activation was also significantly increased in HFD-treated mice, both in close proximity to and far from senile plaques. Insulin degrading enzyme and neprilysin levels were not affected, suggesting that Aβ degradation pathways were preserved, whereas we detected an increase in spontaneous cortical bleeding that could underlay an impairment of Aβ interstitial fluid drainage, contributing to the increase in Aβ deposition in APP/PS1-HFD mice. Altogether our data suggest that early hyperinsulinemia is enough to exacerbate AD pathology observed in APP/PS1 mice, and supports the role of insulin-resistance therapies to stop or delay central complications associated.
Collapse
Affiliation(s)
| | - Oscar Ortiz-Barajas
- Division of Physiology, School of Medicine, University of Cadiz, Cadiz 11003, Spain
| | | | | | | | - Nuria Zopeque-Garcia
- Service of Clinical Analyses, University Hospital Puerta del Mar of Cadiz, Cadiz 11009, Spain
| | | | - Monica Garcia-Alloza
- Division of Physiology, School of Medicine, University of Cadiz, Cadiz 11003, Spain.
| |
Collapse
|
30
|
Zhang Y, Ren C, Lu G, Mu Z, Cui W, Gao H, Wang Y. Anti-diabetic effect of mulberry leaf polysaccharide by inhibiting pancreatic islet cell apoptosis and ameliorating insulin secretory capacity in diabetic rats. Int Immunopharmacol 2014; 22:248-57. [DOI: 10.1016/j.intimp.2014.06.039] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 06/27/2014] [Accepted: 06/27/2014] [Indexed: 01/09/2023]
|
31
|
Effects of Brown Seaweed (Sargassum polycystum) Extracts on Kidney, Liver, and Pancreas of Type 2 Diabetic Rat Model. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:379407. [PMID: 24516503 PMCID: PMC3910465 DOI: 10.1155/2014/379407] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 12/23/2013] [Indexed: 02/07/2023]
Abstract
The edible seaweed Sargassum polycystum (SP) is traditionally used against several human diseases. This investigation evaluated the effects of two dietary doses of SP ethanolic and aqueous extracts on the pancreatic, hepatic, and renal morphology of type 2 diabetic rats (T2DM). T2DM was induced by feeding rats on high calorie diet followed by a low dose streptozotocin. Changes in the diabetic rat organs in SP treated groups with different doses of extracts were compared with normal rats, diabetic control rats, and metformin treated rats. After 22 days of treatment, the pathological lesions of the livers and kidneys in the diabetic rats were quantitatively and qualitatively alleviated (P < 0.05) by both the SP extracts at 150 mg/kg body weight and by metformin. All the treated diabetic groups revealed marked improvement in the histopathology of the pancreas compared with the control diabetic group. Oral administration of 300 mg/kg body weight of aqueous and ethanolic extracts of SP and metformin revealed pancreas protective or restorative effects. The seaweed extracts at 150 mg/kg body weight reduced the liver and kidney damages in the diabetic rats and may exert tissue repair or restoration of the pancreatic islets in experimentally induced diabetes to produce the beneficial homeostatic effects.
Collapse
|
32
|
Singh H, Ganneru S, Malakapalli V, Chalasani M, Nappanveettil G, Bhonde RR, Venkatesan V. Islet adaptation to obesity and insulin resistance in WNIN/GR-Ob rats. Islets 2014; 6:e998099. [PMID: 25833252 PMCID: PMC4398287 DOI: 10.1080/19382014.2014.998099] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
WNIN/GR-Ob mutant rat is a novel animal model to study metabolic syndrome (obesity, insulin resistance, hyperinsulinemia, impaired glucose tolerance and cardiovascular diseases). We have investigated the islet characteristics of obese mutants at different age groups (1, 6 and 12 months) to assess the islet changes in response to early and chronic metabolic stress. Our data demonstrates altered islet cell morphology and function (hypertrophy, fibrotic lesions, vacuolation, decreased stimulation index, increased TNFα, ROS and TBARS levels) in mutants as compared to controls. Furthermore, network analysis (gene-gene interaction) studied in pancreas demonstrated increased inflammation as a key factor underlying obesity/metabolic syndrome in mutants. These observations pave way to explore this model to understand islet adaptation in response to metabolic syndrome.
Collapse
Key Words
- ANOVA, one-way analysis of variance
- BM-MSCs, bone marrow derived mesenchymal stem cells
- DAPI, 4′,6-diamidino-2-phenylindol
- DTZ, Dithizone
- FBG, fasting blood glucose
- H&E, hematoxylin and eosin stain
- HI, hyperinsulinemia
- HOMA-IR, homeostatic model assessment for insulin resistance
- IGT, impaired glucose tolerance
- IHC, immunohistochemistry
- IR, insulin resistance
- KRBH, krebs ringer bicarbonate
- MS, metabolic syndrome
- NCLAS, National Center for Laboratory Animal Sciences
- NIN, National Institute of Nutrition
- PBS, phosphate buffered saline
- ROS, reactive oxygen species
- SEM, scanning electron microscope
- T2D, type 2 diabetes
- TBARS, thiobarbituric acid reactive substances
- TEM, transmission electron microscopy
- TNFα, tumor necrosis factors
- WNIN, Wistar rats raised at National Institute of Nutrition
- WNIN/GR-Ob mutant rats
- hyperinsulinemia
- hypertrophy
- insulin resistance
- islets
Collapse
Affiliation(s)
- Himadri Singh
- Biochemistry/Stem Cell Research; National
Institute of Nutrition; Indian Council of Medical Research; Hyderabad,
India
| | - Sireesha Ganneru
- Biochemistry/Stem Cell Research; National
Institute of Nutrition; Indian Council of Medical Research; Hyderabad,
India
| | - Venkata Malakapalli
- Biochemistry/Stem Cell Research; National
Institute of Nutrition; Indian Council of Medical Research; Hyderabad,
India
| | - Maniprabha Chalasani
- Biochemistry/Stem Cell Research; National
Institute of Nutrition; Indian Council of Medical Research; Hyderabad,
India
| | - Giridharan Nappanveettil
- National Center for Laboratory Animal
Sciences; National Institute of Nutrition Hyderabad,
India
| | - Ramesh R Bhonde
- School of Regenerative Medicine; Manipal
University; Bangalore, India
| | - Vijayalakshmi Venkatesan
- Biochemistry/Stem Cell Research; National
Institute of Nutrition; Indian Council of Medical Research; Hyderabad,
India
- Correspondence to: Vijayalakshmi Venkatesan;
| |
Collapse
|
33
|
Obesity, insulin resistance, and metabolic syndrome: a study in WNIN/Ob rats from a pancreatic perspective. BIOMED RESEARCH INTERNATIONAL 2013; 2013:617569. [PMID: 24455710 PMCID: PMC3876834 DOI: 10.1155/2013/617569] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/09/2013] [Accepted: 11/11/2013] [Indexed: 12/16/2022]
Abstract
Alterations in pancreatic milieu to adapt to physiological shifts occurring in conditions of obesity and metabolic syndrome (MS) have been documented, though mechanisms leading to such a state have remained elusive so far. The data presented here tries to look at the gravity of metabolic insult during the early and prolonged phases of obesity/insulin resistance (IR) depicted in WNIN/Ob strain of rats—an obese euglycemic mutant rat model developed indigenously at our institute which is highly vulnerable for a variety of degenerative diseases. The present results in situ show the participation of several confounding factors in the pancreatic milieu that collectively coprecipitates for a state of profound inflammation in the pancreas (among Mutant compared to Lean/Control) which gets worsened with age. These include hypertrophy, macrophage infiltration (CD11b/TNFα/IL6), apoptosis, β-cell vacuolation, hyperinsulinemia (HI), and stress markers (RL-77/HSP104/TBARS) all of which correlated well with indices for obesity (2-3 fold), IR (1.5-3 fold), and HI (2-3 fold). Further, supportive data was also obtained from in vitro studies using islet cell cultures amongst phenotypes. Taken together, these results advocate that inflammation was the major precipitating factor to cause islet cell dysfunctions (in situ and in vitro) in these Mutant rats compared to their Lean littermates and parental Control.
Collapse
|
34
|
Brenneman KA, Ramaiah SK, Rohde CM, Messing DM, O'Neil SP, Gauthier LM, Stewart ZS, Mantena SR, Shevlin KM, Leonard CG, Sokolowski SA, Lin H, Carraher DC, Jesson MI, Tomlinson L, Zhan Y, Bobrowski WF, Bailey SA, Vogel WM, Morris DL, Whiteley LO, Davis JW. Mechanistic investigations of test article-induced pancreatic toxicity at the endocrine-exocrine interface in the rat. Toxicol Pathol 2013; 42:229-42. [PMID: 24226507 DOI: 10.1177/0192623313508851] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Pancreatic toxicity commonly affects the endocrine or exocrine pancreas. However, it can also occur at the endocrine-exocrine interface (EEI), where the capillary network of the islet merges with the capillaries of the surrounding acinar tissue, that is, the insulo-acinar portal system. The goal of this article is to describe a novel, test article-induced pancreatic toxicity that originated at the EEI and to summarize investigations into the mechanistic basis of the injury. This injury was initially characterized by light microscopy in 7/14 day-toxicity studies in Sprague-Dawley (Crl: CD®[SD]) rats with undisclosed test articles. Microvascular injury at the interface resulted in peri-islet serum exudation, fibrin deposition, hemorrhage, inflammation, and secondary degeneration/necrosis of surrounding exocrine tissue. More chronic injury presented as islet fibrosis and lobular atrophy. Direct cytotoxicity affecting the capillary endothelium at the EEI was confirmed ultrastructurally on day 4. Endothelial microparticle and blood flow studies further confirmed endothelial involvement. Similar lesions occurred less frequently in 2 other rat strains and not in the mouse, dog, or cynomolgus macaque. In summary, in vivo and investigative study data confirmed primary endothelial cytotoxicity in the pathogenesis of this lesion and suggested that the lesion may be rat/rat strain-specific and of uncertain relevance for human safety risk assessment.
Collapse
|
35
|
Pandiri AR, Schultze AE. Overview of the pancreatic toxicity and carcinogenesis session. Toxicol Pathol 2013; 42:204-6. [PMID: 24159055 DOI: 10.1177/0192623313505931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The theme of the Society of Toxicologic Pathology Annual Symposium 2013 was "Toxicologic Pathology of the Digestive Tract and Pancreas." The last session focused on pancreatic toxicity and carcinogenesis. This overview highlights the various presentations in this session, focusing on pancreatic toxicologic pathology, responses of the pancreas to xenobiotics, and current understanding on pancreatic carcinogenesis. The objective of this symposium overview and the subsequent articles from this session is to enable the audience to develop a better appreciation for the pancreas as a target organ in toxicological studies.
Collapse
Affiliation(s)
- Arun R Pandiri
- 1Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | | |
Collapse
|
36
|
Motshakeri M, Ebrahimi M, Goh YM, Matanjun P, Mohamed S. Sargassum polycystum reduces hyperglycaemia, dyslipidaemia and oxidative stress via increasing insulin sensitivity in a rat model of type 2 diabetes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:1772-8. [PMID: 23208488 DOI: 10.1002/jsfa.5971] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 09/23/2012] [Accepted: 10/26/2012] [Indexed: 01/10/2024]
Abstract
BACKGROUND Sargassum polycystum, a brown seaweed, contains various nutrients and bioactive compounds that have antioxidant and healing properties. The research hypothesises that antioxidants and pigments in dietary S. polycystum extracts can improve insulin sensitivity, blood sugar levels and blood lipid levels in a rat model of type 2 diabetes. The diabetes was induced by a high-sugar, high-fat diet for 16 weeks to enhance insulin resistance, followed by a low-dose intraperitoneal injection of streptozotocin (35 mg kg(-1) body weight). The doses of S. polycystum tested on diabetic rats were 150 and 300 mg kg(-1) body weight for the ethanolic extract or 150 and 300 mg kg(-1) for the water extract. Normal rats, untreated diabetic and metformin-treated diabetic rats (n = 6) were used as control. RESULTS Both doses of the alcohol extract of S. polycystum and the 300 mg kg(-1) water extract, significantly reduced blood glucose and glycosylated haemoglobin (HbA1C ) levels. Serum total cholesterol, triglyceride levels and plasma atherogenic index were significantly decreased after 22 days treatment in all seaweed groups. Unlike metformin, S. polycystum did not significantly change plasma insulin in the rats, but increased the response to insulin. CONCLUSION The consumption of either ethanolic or water extracts of S. polycystum dose dependently reduced dyslipidaemia in type 2 diabetic rats. S. polycystum is a potential insulin sensitiser, for a comestible complementary therapy in the management of type 2 diabetes which can help reduce atherogenic risk.
Collapse
Affiliation(s)
- Mahsa Motshakeri
- Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | | | | | | | | |
Collapse
|
37
|
Jeong JH, Yook S, Lee H, Ahn CH, Lee DY, Byun Y. Effects of surface camouflaged islet transplantation on pathophysiological progression in a db/db type 2 diabetic mouse model. Biochem Biophys Res Commun 2013; 433:513-8. [DOI: 10.1016/j.bbrc.2013.03.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 03/06/2013] [Indexed: 11/16/2022]
|
38
|
Effect of trans-fat, fructose and monosodium glutamate feeding on feline weight gain, adiposity, insulin sensitivity, adipokine and lipid profile. Br J Nutr 2012; 106:218-26. [PMID: 21429276 DOI: 10.1017/s000711451000588x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The incidence of obesity and type 2 diabetes mellitus (T2DM) is increasing, and new experimental models are required to investigate the diverse aspects of these polygenic diseases, which are intimately linked in terms of aetiology. Feline T2DM has been shown to closely resemble human T2DM in terms of its clinical, pathological and physiological features. Our aim was to develop a feline model of diet-induced weight gain, adiposity and metabolic deregulation, and to examine correlates of weight and body fat change, insulin homeostasis, lipid profile, adipokines and clinical chemistry, in order to study associations which may shed light on the mechanism of diet-induced metabolic dysregulation. We used a combination of partially hydrogenated vegetable shortening and high-fructose corn syrup to generate a high-fat-high-fructose diet. The effects of this diet were compared with an isoenergetic standard chow, either in the presence or absence of 1.125 % dietary monosodium glutamate (MSG). Dual-energy X-ray absorptiometry body imaging and a glucose tolerance test were performed. The present results indicate that dietary MSG increased weight gain and adiposity, and reduced insulin sensitivity (P < 0.05), whereas high-fat-high-fructose feeding resulted in elevated cortisol and markers of liver dysfunction (P < 0.01). The combination of all three dietary constituents resulted in lower insulin levels and elevated serum β-hydroxybutyrate and cortisol (P < 0.05). This combination also resulted in a lower first-phase insulin release during glucose tolerance testing (P < 0.001). In conclusion, markers of insulin deregulation and metabolic dysfunction associated with adiposity and T2DM can be induced by dietary factors in a feline model.
Collapse
|
39
|
Krull DL, Peterson RA. Preclinical applications of quantitative imaging cytometry to support drug discovery. Methods Cell Biol 2011; 102:291-308. [PMID: 21704843 DOI: 10.1016/b978-0-12-374912-3.00011-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Preclinical drug development is actively involved in testing compounds to find cures or to manage the effects of disease, such as diabetes. Animal models, such as the Zucker diabetic fatty (ZDF) rat, are used to measure efficacy of candidate drugs. This animal model was selected because of its clinical and pathological similarities to diabetic human patients. A method using immunofluorescence and laser scanning cytometry (LSC) technology has been used to measure the development of diabetic phenotype in the ZDF rat during a 17-week time course. The expression levels of insulin, glucagon, voltage-dependent anion channel (VDAC), and Ki67 were quantified. Insulin and VDAC expression were reduced in the ZDF animals in comparison to the lean control rats, while no significant change was seen in glucagon and Ki67 expression at week 17. This information is useful in the design of studies to test experimental compounds in this model. Screening drug targets or biomarkers in tissue sections is another important activity in drug development. Tissue microarrays (TMAs) are composed of 60 or more tissue cores from humans or animal models and may contain healthy and/or diseased tissues. Antibodies against target proteins are applied to TMAs using routine immunohistochemical reagents and protocols. The protein expression across the cores, as labeled by immunohistochemistry, is measured using LSC technology. The process provides an efficient and cost-effective method for evaluating multiple targets in a large number of tissue samples. More recently, IHC and LSC have been taken to the next level to quantify biopharmaceutical drug and target co-localization in tissue sections.
Collapse
Affiliation(s)
- David L Krull
- GlaxoSmithKline, Safety Assessment, Investigative Pathology Laboratory, Research Triangle Park, North Carolina, USA
| | | |
Collapse
|
40
|
Grover GJ, Koetzner L, Wicks J, Gahler RJ, Lyon MR, Reimer RA, Wood S. Effects of the Soluble Fiber Complex PolyGlycopleX on Glucose Homeostasis and Body Weight in Young Zucker Diabetic Rats. Front Pharmacol 2011; 2:47. [PMID: 21922008 PMCID: PMC3168379 DOI: 10.3389/fphar.2011.00047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Accepted: 07/26/2011] [Indexed: 11/13/2022] Open
Abstract
Dietary fiber can reduce insulin resistance, body weight, and hyperlipidemia depending on fiber type, water solubility, and viscosity. PolyGlycopleX(®) (PGX(®)) is a natural, novel water soluble, non-starch polysaccharide complex that with water forms a highly viscous gel compared to other naturally occurring dietary fiber. We determined the effect of dietary PGX(®) vs. cellulose and inulin on the early development of insulin resistance, body weight, hyperlipidemia, and glycemia-induced tissue damage in young Zucker diabetic rats (ZDFs) in fasted and non-fasted states. ZDFs (5 weeks old) were fed a diet containing 5% (wgt/wgt) cellulose, inulin, or PGX(®) for 8 weeks. Body weight, lipids, insulin, and glucose levels were determined throughout the study and homeostasis model assessment (HOMA) was used to measure insulin sensitivity throughout the study in fasted animals. At study termination, insulin sensitivity (oral glucose tolerance test, OGTT) and kidney, liver, and pancreatic histopathology were determined. Body weight and food intake were significantly reduced by PGX(®) vs. inulin and cellulose. Serum insulin in fasted and non-fasted states was significantly reduced by PGX(®) as was non-fasted blood glucose. Insulin resistance, measured as a HOMA score, was significantly reduced by PGX(®) in weeks 5 through 8 as well as terminal OGTT scores in fed and fasted states. Serum total cholesterol was also significantly reduced by PGX(®). PGX(®) significantly reduced histological kidney and hepatic damage in addition to reduced hepatic steatosis and cholestasis. A greater mass of pancreatic β-cells was found in the PGX(®) group. PGX(®) therefore may be a useful dietary additive in the control of the development of the early development of the metabolic syndrome.
Collapse
Affiliation(s)
- Gary James Grover
- Department of Pharmacology, Eurofins-Product Safety LaboratoriesDayton, NJ, USA
- Department of Physiology and Biophysics, Robert Wood Johnson Medical SchoolPiscataway, NJ, USA
| | - Lee Koetzner
- Department of Pharmacology, Eurofins-Product Safety LaboratoriesDayton, NJ, USA
| | | | | | - Michael R. Lyon
- Canadian Centre for Functional MedicineCoquitlam, BC, Canada
- Food, Nutrition and Health Program, University of British ColumbiaVancouver, BC, Canada
| | - Raylene A. Reimer
- Faculty of Kinesiology, Department of Biochemistry and Molecular Biology, University of CalgaryCalgary, AB, Canada
| | - Simon Wood
- Canadian Centre for Functional MedicineCoquitlam, BC, Canada
| |
Collapse
|
41
|
Krull D. Quantitative assessment of pancreatic islets using laser scanning cytometry. CURRENT PROTOCOLS IN CYTOMETRY 2011; Chapter 6:6.32.1-6.32.17. [PMID: 21455967 DOI: 10.1002/0471142956.cy0632s56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Insulin-dependent (type II) diabetes is characterized by an inability to metabolize glucose, resulting from insufficient insulin function for glucose transport from the blood to tissues. One cause of insufficiency is malfunction of the insulin-producing beta cells within the pancreatic islets. Various compounds to stimulate and restore normal islet function are under development. Zucker diabetic fatty (ZDF) rat animal models are used to measure efficacy of drug candidates, as they show clinical effects similar to those in diabetic patients. Drug effects are evaluated by removing the pancreas from ZDF rats, processing the tissue with paraffin and sectioning it, and then analyzing the sections utilizing antibodies against targeted proteins to quantify morphology and metabolic activity. This protocol describes quantitative analysis of insulin, glucagon, mitochondria (all on a per-islet basis), and insulin-positive proliferating cells in ZDF and lean rat pancreatic tissue sections using the iCyte Imaging Cytometer.
Collapse
Affiliation(s)
- David Krull
- GlaxoSmithKline, Research Triangle Park, North Carolina
| |
Collapse
|
42
|
Kawai K, Sakairi T, Harada S, Shinozuka J, Ide M, Sato H, Tanaka M, Toriumi W, Kume E. Diet modification and its influence on metabolic and related pathological alterations in the SHR/NDmcr-cp rat, an animal model of the metabolic syndrome. ACTA ACUST UNITED AC 2010; 64:333-8. [PMID: 20965707 DOI: 10.1016/j.etp.2010.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 06/18/2010] [Accepted: 09/19/2010] [Indexed: 12/18/2022]
Abstract
SHR/NDmcr-cp (SHR/NDcp) rats, which carry a nonsense mutation of the leptin receptor gene, are known to spontaneously develop hypertension, obesity and hyperlipidemia, and have therefore found use as an animal model of the metabolic syndrome and type 2 diabetes. However, some recent studies on SHR/NDcp rats revealed only mild elevation of blood glucose levels. To investigate whether metabolic factors including blood glucose and histopathological alterations of SHR/NDcp rats deteriorate with a diabetogenic diet, biochemical and histopathological examinations were conducted with animals fed normal or diabetogenic diets for 20 weeks. SHR/NDcp rats receiving the normal diet displayed obesity, hypertension, hyperlipidemia, and mild elevation of blood glucose and HbA1c levels. Urinary glucose excretion was noted in only 1 out of 6 animals. Histologically, macro- and micro-vesicular steatosis in the liver, glomerular and tubular damages in the kidney and islet hyperplasia mainly of beta cells in the pancreas were characteristically noted. In SHR/NDcp rats fed the diabetogenic diet, obesity was more severe, with higher blood glucose and HbA1c levels, increased numbers of animals with urinary glucose excretion, and more pronounced hepatic steatosis and renal tubular changes. However, elevation of blood glucose levels and urinary glucose excretion proved transient. These observations indicate that the diabetic state and associated histopathological alterations in SHR/NDcp rats are exacerbated by feeding a diabetogenic diet, but the effects are limited. Elevated islet function with compensative insulin secretion might be related to amelioration of the hyperglycemic state. Further diet modification could be needed to induce a more prominent and persistent diabetic state in SHR/NDcp rats.
Collapse
Affiliation(s)
- Kouji Kawai
- Safety Research Laboratory, Mitsubishi Tanabe Pharma Corporation, 1-1-1, Kazusakamatari, Kisarazu, Chiba 292-0818, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Remedi MS, Koster JC. K(ATP) channelopathies in the pancreas. Pflugers Arch 2009; 460:307-20. [PMID: 19921246 DOI: 10.1007/s00424-009-0756-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 10/20/2009] [Accepted: 10/23/2009] [Indexed: 12/14/2022]
Abstract
Adenosine-triphosphate-sensitive potassium channels (KATP) are regulated by adenosine nucleotides, and, thereby, couple cellular metabolism with electrical activity in multiple tissues including the pancreatic beta-cell. The critical involvement of KATP in insulin secretion is confirmed by the demonstration that inactivating and activating mutations in KATP underlie persistent hyperinsulinemia and neonatal diabetes mellitus, respectively, in both animal models and humans. In addition, a common variant in KATP represents a risk factor in the etiology of type 2 diabetes. This review focuses on the mechanistic basis by which KATP mutations underlie insulin secretory disorders and the implications of these findings for successful clinical intervention.
Collapse
Affiliation(s)
- Maria S Remedi
- Department of Cell Biology and Physiology, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.
| | | |
Collapse
|