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Negi V, Lee J, Mandi V, Danvers J, Liu R, Perez-Garcia EM, Li F, Jagannathan R, Yang P, Filingeri D, Kumar A, Ma K, Moulik M, Yechoor VK. Bromodomain Protein Inhibition Protects β-Cells from Cytokine-Induced Death and Dysfunction via Antagonism of NF-κB Pathway. Cells 2024; 13:1108. [PMID: 38994961 PMCID: PMC11240345 DOI: 10.3390/cells13131108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/10/2024] [Accepted: 06/18/2024] [Indexed: 07/13/2024] Open
Abstract
Cytokine-induced β-cell apoptosis is a major pathogenic mechanism in type 1 diabetes (T1D). Despite significant advances in understanding its underlying mechanisms, few drugs have been translated to protect β-cells in T1D. Epigenetic modulators such as bromodomain-containing BET (bromo- and extra-terminal) proteins are important regulators of immune responses. Pre-clinical studies have demonstrated a protective effect of BET inhibitors in an NOD (non-obese diabetes) mouse model of T1D. However, the effect of BET protein inhibition on β-cell function in response to cytokines is unknown. Here, we demonstrate that I-BET, a BET protein inhibitor, protected β-cells from cytokine-induced dysfunction and death. In vivo administration of I-BET to mice exposed to low-dose STZ (streptozotocin), a model of T1D, significantly reduced β-cell apoptosis, suggesting a cytoprotective function. Mechanistically, I-BET treatment inhibited cytokine-induced NF-kB signaling and enhanced FOXO1-mediated anti-oxidant response in β-cells. RNA-Seq analysis revealed that I-BET treatment also suppressed pathways involved in apoptosis while maintaining the expression of genes critical for β-cell function, such as Pdx1 and Ins1. Taken together, this study demonstrates that I-BET is effective in protecting β-cells from cytokine-induced dysfunction and apoptosis, and targeting BET proteins could have potential therapeutic value in preserving β-cell functional mass in T1D.
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Affiliation(s)
- Vinny Negi
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Jeongkyung Lee
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Varun Mandi
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Joseph Danvers
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Ruya Liu
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Eliana M. Perez-Garcia
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Feng Li
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Rajaganapati Jagannathan
- Division of Cardiology, Department of Pediatrics, Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA 15224, USA; (R.J.); (M.M.)
| | - Ping Yang
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Domenic Filingeri
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Amit Kumar
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
| | - Ke Ma
- Department of Diabetes Complications and Metabolism, Diabetes and Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA;
| | - Mousumi Moulik
- Division of Cardiology, Department of Pediatrics, Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA 15224, USA; (R.J.); (M.M.)
| | - Vijay K. Yechoor
- Diabetes and Beta Cell Biology Center, Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, PA 15213, USA; (V.N.); (J.L.); (V.M.); (R.L.); (E.M.P.-G.); (F.L.); (D.F.); (A.K.)
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Arefanian H, Al Madhoun A, Al-Rashed F, Alzaid F, Bahman F, Nizam R, Alhusayan M, John S, Jacob S, Williams MR, Abukhalaf N, Shenouda S, Joseph S, AlSaeed H, Kochumon S, Mohammad A, Koti L, Sindhu S, Abu-Farha M, Abubaker J, Thanaraj TA, Ahmad R, Al-Mulla F. Unraveling Verapamil's Multidimensional Role in Diabetes Therapy: From β-Cell Regeneration to Cholecystokinin Induction in Zebrafish and MIN6 Cell-Line Models. Cells 2024; 13:949. [PMID: 38891081 PMCID: PMC11171639 DOI: 10.3390/cells13110949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/15/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
This study unveils verapamil's compelling cytoprotective and proliferative effects on pancreatic β-cells amidst diabetic stressors, spotlighting its unforeseen role in augmenting cholecystokinin (CCK) expression. Through rigorous investigations employing MIN6 β-cells and zebrafish models under type 1 and type 2 diabetic conditions, we demonstrate verapamil's capacity to significantly boost β-cell proliferation, enhance glucose-stimulated insulin secretion, and fortify cellular resilience. A pivotal revelation of our research is verapamil's induction of CCK, a peptide hormone known for its role in nutrient digestion and insulin secretion, which signifies a novel pathway through which verapamil exerts its therapeutic effects. Furthermore, our mechanistic insights reveal that verapamil orchestrates a broad spectrum of gene and protein expressions pivotal for β-cell survival and adaptation to immune-metabolic challenges. In vivo validation in a zebrafish larvae model confirms verapamil's efficacy in fostering β-cell recovery post-metronidazole infliction. Collectively, our findings advocate for verapamil's reevaluation as a multifaceted agent in diabetes therapy, highlighting its novel function in CCK upregulation alongside enhancing β-cell proliferation, glucose sensing, and oxidative respiration. This research enriches the therapeutic landscape, proposing verapamil not only as a cytoprotector but also as a promoter of β-cell regeneration, thereby offering fresh avenues for diabetes management strategies aimed at preserving and augmenting β-cell functionality.
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Affiliation(s)
- Hossein Arefanian
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Ashraf Al Madhoun
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
- Animal and Imaging Core Facility, Dasman Diabetes Institute, Dasman 15462, Kuwait;
| | - Fatema Al-Rashed
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Fawaz Alzaid
- Department of Bioenergetics & Neurometabolism, Dasman Diabetes Institute, Dasman 15462, Kuwait; (F.A.); (M.A.); (M.R.W.)
- Institut Necker Enfants Malades (INEM), French Institute of Health and Medical Research (INSERM), Immunity & Metabolism of Diabetes (IMMEDIAB), Université de Paris Cité, 75014 Paris, France
| | - Fatemah Bahman
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Rasheeba Nizam
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
| | - Mohammed Alhusayan
- Department of Bioenergetics & Neurometabolism, Dasman Diabetes Institute, Dasman 15462, Kuwait; (F.A.); (M.A.); (M.R.W.)
| | - Sumi John
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
| | - Sindhu Jacob
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
| | - Michayla R. Williams
- Department of Bioenergetics & Neurometabolism, Dasman Diabetes Institute, Dasman 15462, Kuwait; (F.A.); (M.A.); (M.R.W.)
| | - Nermeen Abukhalaf
- Animal and Imaging Core Facility, Dasman Diabetes Institute, Dasman 15462, Kuwait;
| | - Steve Shenouda
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Shibu Joseph
- Special Services Facilities, Dasman Diabetes Institute, Dasman 15462, Kuwait;
| | - Halemah AlSaeed
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Shihab Kochumon
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Anwar Mohammad
- Department of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.M.); (M.A.-F.); (J.A.)
| | - Lubaina Koti
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
| | - Sardar Sindhu
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
- Animal and Imaging Core Facility, Dasman Diabetes Institute, Dasman 15462, Kuwait;
| | - Mohamed Abu-Farha
- Department of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.M.); (M.A.-F.); (J.A.)
- Department of Translational Research, Dasman Diabetes Institute, Dasman 15462, Kuwait
| | - Jehad Abubaker
- Department of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.M.); (M.A.-F.); (J.A.)
| | - Thangavel Alphonse Thanaraj
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
| | - Rasheed Ahmad
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman 15462, Kuwait; (H.A.); (F.A.-R.); (F.B.); (S.S.); (H.A.); (S.K.); (S.S.); (R.A.)
| | - Fahd Al-Mulla
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (A.A.M.); (R.N.); (S.J.); (S.J.); (L.K.); (T.A.T.)
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Han HW, Pradhan G, Villarreal D, Kim DM, Jain A, Gaharwar A, Tian Y, Guo S, Sun Y. GHSR Deletion in β-Cells of Male Mice: Ineffective in Obesity, but Effective in Protecting against Streptozotocin-Induced β-Cell Injury in Aging. Nutrients 2024; 16:1464. [PMID: 38794702 PMCID: PMC11123813 DOI: 10.3390/nu16101464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Insulin secretion from pancreatic β cells is a key pillar of glucose homeostasis, which is impaired under obesity and aging. Growth hormone secretagogue receptor (GHSR) is the receptor of nutrient-sensing hormone ghrelin. Previously, we showed that β-cell GHSR regulated glucose-stimulated insulin secretion (GSIS) in young mice. In the current study, we further investigated the effects of GHSR on insulin secretion in male mice under diet-induced obesity (DIO) and streptozotocin (STZ)-induced β-cell injury in aging. β-cell-specific-Ghsr-deficient (Ghsr-βKO) mice exhibited no glycemic phenotype under DIO but showed significantly improved ex vivo GSIS in aging. We also detected reduced insulin sensitivity and impaired insulin secretion during aging both in vivo and ex vivo. Accordingly, there were age-related alterations in expression of glucose transporter, insulin signaling pathway, and inflammatory genes. To further determine whether GHSR deficiency affected β-cell susceptibility to acute injury, young, middle-aged, and old Ghsr-βKO mice were subjected to STZ. We found that middle-aged and old Ghsr-βKO mice were protected from STZ-induced hyperglycemia and impaired insulin secretion, correlated with increased expression of insulin signaling regulators but decreased pro-inflammatory cytokines in pancreatic islets. Collectively, our findings indicate that β-cell GHSR has a major impact on insulin secretion in aging but not obesity, and GHSR deficiency protects against STZ-induced β-cell injury in aging.
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Affiliation(s)
- Hye Won Han
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (H.W.H.)
| | - Geetali Pradhan
- USDA/ARS Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Daniel Villarreal
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (H.W.H.)
| | - Da Mi Kim
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (H.W.H.)
| | - Abhishek Jain
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Akhilesh Gaharwar
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Yanan Tian
- Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Shaodong Guo
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (H.W.H.)
| | - Yuxiang Sun
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (H.W.H.)
- USDA/ARS Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
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Martínez-Esquivias F, Perez-Larios A, Guzmán-Flores JM. Effect of Administration of Selenium Nanoparticles Synthesized Using Onion Extract on Biochemical and Inflammatory Parameters in Mice Fed with High-Fructose Diet: In Vivo and In Silico Analysis. Biol Trace Elem Res 2024; 202:558-568. [PMID: 37119340 DOI: 10.1007/s12011-023-03685-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/26/2023] [Indexed: 05/01/2023]
Abstract
Fructose consumption has increased globally and has been linked to obesity, insulin resistance, and diabetes. Selenium nanoparticles (SeNPs) can regulate glucose and lipid concentrations and have immunoregulatory properties. Four study groups (n = 7/group) of eight-week-old male mice (Balb/c) were formed for this investigation. One group received a standard diet (C), another standard diet plus SeNPs (C + SeNPs), a high fructose diet (F), and a group with a high fructose diet plus SeNPs (F + SeNPs). Weight, glucose, triglycerides, and cholesterol were evaluated. In the end, mice were sacrificed, blood samples were obtained to assess cytokine profile, and liver, kidney, and pancreas were removed for histological examination. The study was complemented with an in silico analysis where the CTD, STITCH, ToppGene Suite, ShinyGO 0.76.3 databases, and Cytoscape software were implemented. The results of in vivo analysis showed that SeNPs regulated biochemical parameters and showed anti-inflammatory effects by decreasing the concentrations of TNF-alpha, IL-1beta, and IFN-gamma and increasing IL-10. No damage was observed in the studied organs. In addition, SeNPs regulate oxidative stress, preserve cell organelles, and regulate metabolic pathways to avoid the adverse effects of fructose consumption, according to bioinformatics analysis. In conclusion, SeNPs protect against the undesirable effects of a diet rich in fructose.
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Affiliation(s)
- Fernando Martínez-Esquivias
- Instituto de Investigación en Biociencias, Centro Universitario de Los Altos, Universidad de Guadalajara, Av. Rafael Casillas Aceves 1200, Tepatitlán de Morelos, 47600, Jalisco, México
| | - Alejandro Perez-Larios
- Laboratorio de Materiales, Centro Universitario de Los Altos, Universidad de Guadalajara, Agua y Energía, Tepatitlán de Morelos, Jalisco, México
| | - Juan Manuel Guzmán-Flores
- Instituto de Investigación en Biociencias, Centro Universitario de Los Altos, Universidad de Guadalajara, Av. Rafael Casillas Aceves 1200, Tepatitlán de Morelos, 47600, Jalisco, México.
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Abdel-Moneim A, Mahmoud R, Allam G, Mahmoud B. Relationship between Cytokines and Metabolic Syndrome Components: Role of Pancreatic-Derived Factor, Interleukin-37, and Tumor Necrosis Factor-α in Metabolic Syndrome Patients. Indian J Clin Biochem 2024; 39:37-46. [PMID: 38223016 PMCID: PMC10784435 DOI: 10.1007/s12291-022-01079-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/21/2022] [Indexed: 10/14/2022]
Abstract
The metabolic syndrome (MetS) is a serious public health issue that affects people all over the world. Notably, insulin resistance, prothrombotic activity, and inflammatory state are associated with MetS. This study aims to explore the relationship between cytokines and tumor necrosis factor-α (TNF-α), pancreatic-derived factor (PANDER), and interleukin (IL-)-37 and the accumulation of MetS components. Eligible participants were divided into four groups as follows: group 1, patients with dyslipidemia; group 2, patients with dyslipidemia and obesity; group 3, patients with dyslipidemia, obesity, and hypertension; and group 4, patients with dyslipidemia, obesity, hypertension, and hyperglycemia. This study exhibited that serum levels of TNF-α and PANDER were significantly elevated (P < 0.001) in the MetS groups, while IL-37 level and IL-37 mRNA expression were significantly decreased (P < 0.001) relative to healthy controls. Moreover, this study has revealed significant correlations (P < 0.001) between MetS components and TNF-α, PANDER, and IL-37 levels in MetS patients. The aforementioned results suggested the association between the proinflammatory cytokine (TNF-α and PANDER) and anti-inflammatory cytokine (IL-37) with the accumulation of MetS components. Hence, the overall outcome indicated that PANDER and IL-37 may be considered novel biomarkers associated with increased risk of MetS and can be used as a promising therapeutic target in preventing, ameliorating, and treating metabolic disorders. Supplementary Information The online version contains supplementary material available at 10.1007/s12291-022-01079-z.
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Affiliation(s)
- Adel Abdel-Moneim
- Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Egypt. Salah Salem St, 62511 Beni-Suef, Egypt
| | - Rania Mahmoud
- Biochemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Gamal Allam
- Immunology Section, Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Basant Mahmoud
- Biochemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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Yoopum S, Wongmanee N, Rojanaverawong W, Rattanapunya S, Sumsakul W, Hanchang W. Mango (Mangifera indica L.) seed kernel extract suppresses hyperglycemia by modulating pancreatic β cell apoptosis and dysfunction and hepatic glucose metabolism in diabetic rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:123286-123308. [PMID: 37981611 DOI: 10.1007/s11356-023-31066-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/12/2023] [Indexed: 11/21/2023]
Abstract
This study investigated the anti-hyperglycemic action of mango seed kernel extract (MKE) and various mechanisms involved in its actions to improve pancreatic β cells and hepatic carbohydrate metabolism in diabetic rats. An intraperitoneal injection of 60 mg/kg of streptozotocin (STZ) followed by 30 consecutive days of treatment with MKE (250, 500, and 1000 mg/kg body weight) was used to establish a study group of diabetic rats. Using liquid chromatography-electrospray ionization-quadrupole time-of-flight mass spectrometry (LC-ESI-QTOF-MS/MS) for identification, 26 chemical compounds were found in MKE and the high-performance liquid chromatography (HPLC) analysis of the MKE also revealed the existence of mangiferin, gallic acid, and quercetin. The results confirmed that in each diabetes-affected rat, MKE mitigated the heightened levels of fasting blood glucose, diabetic symptoms, glucose intolerance, total cholesterol (TC), and low-density lipoprotein-cholesterol (LDL-C). As demonstrated by a remarkable increment in serum and pancreatic insulin, the diabetic pancreatic β cell function was potentiated by treating with MKE. The effect of MKE on diabetic pancreatic apoptosis clearly reduced the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL)-positive cells, which was related to diminished levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and Bax and an increase in Bcl-xL protein expression. Furthermore, diabetes-induced liver damage was clearly ameliorated along with a notable reduction in serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels and abnormal liver histology. By enhancing anti-oxidant superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) activities, MKE alleviated diabetes-induced pancreatic and liver oxidative damage, as demonstrated by diminished levels of malondialdehyde. In minimizing the expression levels of glucose 6-phosphatase and phosphoenolpyruvate carboxykinase-1 proteins in the diabetic liver, MKE also enhanced glycogen content and hexokinase activity. Collectively, these findings indicate that by suppressing oxidative and inflammatory processes, MKE exerts a potent anti-hyperglycemic activity in diabetic rats which serve to protect pancreatic β cell apoptosis, enhance their function, and improve hepatic glucose metabolism.
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Affiliation(s)
- Sasiwat Yoopum
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Navinee Wongmanee
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Worarat Rojanaverawong
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Siwalee Rattanapunya
- Public Health Department, Science and Technology Faculty, Chiang Mai Rajabhat University, Chiang Mai, 50300, Thailand
| | - Wiriyaporn Sumsakul
- Expert Centre of Innovative Herbal Products, Institute of Scientific and Technology Research, Pathum Thani, 12120, Thailand
| | - Wanthanee Hanchang
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand.
- Centre of Excellence in Medical Biotechnology, Naresuan University, Phitsanulok, 65000, Thailand.
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Sionov RV, Ahdut-HaCohen R. A Supportive Role of Mesenchymal Stem Cells on Insulin-Producing Langerhans Islets with a Specific Emphasis on The Secretome. Biomedicines 2023; 11:2558. [PMID: 37761001 PMCID: PMC10527322 DOI: 10.3390/biomedicines11092558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/06/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Type 1 Diabetes (T1D) is a chronic autoimmune disease characterized by a gradual destruction of insulin-producing β-cells in the endocrine pancreas due to innate and specific immune responses, leading to impaired glucose homeostasis. T1D patients usually require regular insulin injections after meals to maintain normal serum glucose levels. In severe cases, pancreas or Langerhans islet transplantation can assist in reaching a sufficient β-mass to normalize glucose homeostasis. The latter procedure is limited because of low donor availability, high islet loss, and immune rejection. There is still a need to develop new technologies to improve islet survival and implantation and to keep the islets functional. Mesenchymal stem cells (MSCs) are multipotent non-hematopoietic progenitor cells with high plasticity that can support human pancreatic islet function both in vitro and in vivo and islet co-transplantation with MSCs is more effective than islet transplantation alone in attenuating diabetes progression. The beneficial effect of MSCs on islet function is due to a combined effect on angiogenesis, suppression of immune responses, and secretion of growth factors essential for islet survival and function. In this review, various aspects of MSCs related to islet function and diabetes are described.
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Affiliation(s)
- Ronit Vogt Sionov
- The Institute of Biomedical and Oral Research (IBOR), Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem 9112102, Israel
| | - Ronit Ahdut-HaCohen
- Department of Medical Neurobiology, Institute of Medical Research, Hadassah Medical School, The Hebrew University of Jerusalem, Jerusalem 9112102, Israel;
- Department of Science, The David Yellin Academic College of Education, Jerusalem 9103501, Israel
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Camaya I, O’Brien B, Donnelly S. How do parasitic worms prevent diabetes? An exploration of their influence on macrophage and β-cell crosstalk. Front Endocrinol (Lausanne) 2023; 14:1205219. [PMID: 37564976 PMCID: PMC10411736 DOI: 10.3389/fendo.2023.1205219] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/10/2023] [Indexed: 08/12/2023] Open
Abstract
Diabetes is the fastest growing chronic disease globally, with prevalence increasing at a faster rate than heart disease and cancer. While the disease presents clinically as chronic hyperglycaemia, two distinct subtypes have been recognised. Type 1 diabetes (T1D) is characterised as an autoimmune disease in which the insulin-producing pancreatic β-cells are destroyed, and type 2 diabetes (T2D) arises due to metabolic insufficiency, in which inadequate amounts of insulin are produced, and/or the actions of insulin are diminished. It is now apparent that pro-inflammatory responses cause a loss of functional β-cell mass, and this is the common underlying mechanism of both T1D and T2D. Macrophages are the central immune cells in the pathogenesis of both diseases and play a major role in the initiation and perpetuation of the proinflammatory responses that compromise β-cell function. Furthermore, it is the crosstalk between macrophages and β-cells that orchestrates the inflammatory response and ensuing β-cell dysfunction/destruction. Conversely, this crosstalk can induce immune tolerance and preservation of β-cell mass and function. Thus, specifically targeting the intercellular communication between macrophages and β-cells offers a unique strategy to prevent/halt the islet inflammatory events underpinning T1D and T2D. Due to their potent ability to regulate mammalian immune responses, parasitic worms (helminths), and their excretory/secretory products, have been examined for their potential as therapeutic agents for both T1D and T2D. This research has yielded positive results in disease prevention, both clinically and in animal models. However, the focus of research has been on the modulation of immune cells and their effectors. This approach has ignored the direct effects of helminths and their products on β-cells, and the modulation of signal exchange between macrophages and β-cells. This review explores how the alterations to macrophages induced by helminths, and their products, influence the crosstalk with β-cells to promote their function and survival. In addition, the evidence that parasite-derived products interact directly with endocrine cells to influence their communication with macrophages to prevent β-cell death and enhance function is discussed. This new paradigm of two-way metabolic conversations between endocrine cells and macrophages opens new avenues for the treatment of immune-mediated metabolic disease.
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Affiliation(s)
| | | | - Sheila Donnelly
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
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9
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Singh A, Afshan N, Singh A, Singh SK, Yadav S, Kumar M, Sarma DK, Verma V. Recent trends and advances in type 1 diabetes therapeutics: A comprehensive review. Eur J Cell Biol 2023; 102:151329. [PMID: 37295265 DOI: 10.1016/j.ejcb.2023.151329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/12/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023] Open
Abstract
Type 1 diabetes (T1D) is a chronic autoimmune disease characterized by the destruction of pancreatic β-cells, leading to insulin deficiency. Insulin replacement therapy is the current standard of care for T1D, but it has significant limitations. However, stem cell-based replacement therapy has the potential to restore β-cell function and achieve glycaemic control eradicating the necessity for drugs or injecting insulin externally. While significant progress has been made in preclinical studies, the clinical translation of stem cell therapy for T1D is still in its early stages. In continuation, further research is essentially required to determine the safety and efficacy of stem cell therapies and to develop strategies to prevent immune rejection of stem cell-derived β-cells. The current review highlights the current state of cellular therapies for T1D including, different types of stem cell therapies, gene therapy, immunotherapy, artificial pancreas, and cell encapsulation being investigated, and their potential for clinical translation.
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Affiliation(s)
- Akash Singh
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Noor Afshan
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Anshuman Singh
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Suraj Kumar Singh
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Sudhanshu Yadav
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Manoj Kumar
- ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | | | - Vinod Verma
- Stem Cell Research Centre, Department of Haematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.
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10
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Ge Y, Bruno M, Nash MS, Coates NH, Chorley BN, Cave MC, Beier JI. Vinyl chloride enhances high-fat diet-induced proteome alterations in the mouse pancreas related to metabolic dysfunction. Toxicol Sci 2023; 193:103-114. [PMID: 36892438 PMCID: PMC10176240 DOI: 10.1093/toxsci/kfad024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
Alterations in physiological processes in pancreas have been associated with various metabolic dysfunctions and can result from environmental exposures, such as chemicals and diet. It was reported that environmental vinyl chloride (VC) exposure, a common industrial organochlorine and environmental pollutant, significantly exacerbated metabolic-related phenotypes in mice fed concurrently with high-fat diet (HFD) but not low-fat diet (LFD). However, little is known about the role of the pancreas in this interplay, especially at a proteomic level. The present study was undertaken to examine the protein responses to VC exposure in pancreas tissues of C57BL/6J mice fed LFD or HFD, with focus on the investigation of protein expression and/or phosphorylation levels of key protein biomarkers of carbohydrate, lipid, and energy metabolism, oxidative stress and detoxification, insulin secretion and regulation, cell growth, development, and communication, immunological responses and inflammation, and biomarkers of pancreatic diseases and cancers. We found that the protein alterations may indicate diet-mediated susceptibility in mouse pancreas induced by HFD to concurrent exposure of low levels of inhaled VC. These proteome biomarkers may lead to a better understanding of pancreas-mediated adaptive or adverse response and susceptibility to metabolic disease.
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Affiliation(s)
- Yue Ge
- Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
| | - Maribel Bruno
- Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
| | - Maliha S Nash
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
| | - Najwa Haykal Coates
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
| | - Brian N Chorley
- Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
| | - Matthew C Cave
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, USA
| | - Juliane I Beier
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
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11
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Ademola SA, Bamikole OJ, Amodu OK. Is TNF alpha a mediator in the co-existence of malaria and type 2 diabetes in a malaria endemic population? Front Immunol 2023; 14:1028303. [PMID: 37215099 PMCID: PMC10196125 DOI: 10.3389/fimmu.2023.1028303] [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: 08/25/2022] [Accepted: 04/25/2023] [Indexed: 05/24/2023] Open
Abstract
Malaria remains a disease of public health importance globally, especially in sub-Saharan Africa. Malaria deaths reduced globally steadily between 2000-2019, however there was a 10% increase in 2020 due to disruptions in medical service during the COVID-19 pandemic. Globally, about 96% of malaria deaths occurred in 29 countries; out of which, four countries (Nigeria, the Democratic Republic of the Congo, the Niger, and the United Republic of Tanzania) accounted for just over half of the malaria deaths. Nigeria leads the four countries with the highest malaria deaths (accounting for 31% globally). Parallelly, sub-Saharan Africa is faced with a rise in the incidence of Type 2 diabetes (T2D). Until recently, T2D was a disease of adulthood and old age. However, this is changing as T2D in children and adolescents is becoming an increasingly important public health problem. Nigeria has been reported to have the highest burden of diabetes in Africa with a prevalence of 5.77% in the country. Several studies conducted in the last decade investigating the interaction between malaria and T2D in developing countries have led to the emergence of the intra-uterine hypothesis. The hypothesis has arisen as a possible explanation for the rise of T2D in malaria endemic areas; malaria in pregnancy could lead to intra-uterine stress which could contribute to low birth weight and may be a potential cause of T2D later in life. Hence, previous, and continuous exposure to malaria infection leads to a higher risk of T2D. Current and emerging evidence suggests that an inflammation-mediated link exists between malaria and eventual T2D emergence. The inflammatory process thus, is an important link for the co-existence of malaria and T2D because these two diseases are inflammatory-related. A key feature of T2D is systemic inflammation, characterized by the upregulation of inflammatory cytokines such as tumor necrosis factor alpha (TNF-α) which leads to impaired insulin signaling. Malaria infection is an inflammatory disease in which TNF-α also plays a major role. TNF-α plays an important role in the pathogenesis and development of malaria and T2D. We therefore hypothesize that TNF-α is an important link in the increasing co-existence of T2D.
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Dludla PV, Mabhida SE, Ziqubu K, Nkambule BB, Mazibuko-Mbeje SE, Hanser S, Basson AK, Pheiffer C, Kengne AP. Pancreatic β-cell dysfunction in type 2 diabetes: Implications of inflammation and oxidative stress. World J Diabetes 2023; 14:130-146. [PMID: 37035220 PMCID: PMC10075035 DOI: 10.4239/wjd.v14.i3.130] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/26/2022] [Accepted: 02/28/2023] [Indexed: 03/15/2023] Open
Abstract
Insulin resistance and pancreatic β-cell dysfunction are major pathological mechanisms implicated in the development and progression of type 2 diabetes (T2D). Beyond the detrimental effects of insulin resistance, inflammation and oxidative stress have emerged as critical features of T2D that define β-cell dysfunction. Predominant markers of inflammation such as C-reactive protein, tumor necrosis factor alpha, and interleukin-1β are consistently associated with β-cell failure in preclinical models and in people with T2D. Similarly, important markers of oxidative stress, such as increased reactive oxygen species and depleted intracellular antioxidants, are consistent with pancreatic β-cell damage in conditions of T2D. Such effects illustrate a pathological relationship between an abnormal inflammatory response and generation of oxidative stress during the progression of T2D. The current review explores preclinical and clinical research on the patho-logical implications of inflammation and oxidative stress during the development of β-cell dysfunction in T2D. Moreover, important molecular mechanisms and relevant biomarkers involved in this process are discussed to divulge a pathological link between inflammation and oxidative stress during β-cell failure in T2D. Underpinning the clinical relevance of the review, a systematic analysis of evidence from randomized controlled trials is covered, on the potential therapeutic effects of some commonly used antidiabetic agents in modulating inflammatory makers to improve β-cell function.
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Affiliation(s)
- Phiwayinkosi V Dludla
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town 7505, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3880, South Africa
| | - Sihle E Mabhida
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town 7505, South Africa
| | - Khanyisani Ziqubu
- Department of Biochemistry, North-West University, Mmabatho 2745, South Africa
| | - Bongani B Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | | | - Sidney Hanser
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga 0727, South Africa
| | - Albert Kotze Basson
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3880, South Africa
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town 7505, South Africa
| | - Andre Pascal Kengne
- Department of Medicine, University of Cape Town, Cape Town 7500, South Africa
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg 7505, South Africa
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13
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The role of cytokines and T-bet, GATA3, ROR-γt, and FOXP3 transcription factors of T cell subsets in the natural clinical progression of Type 1 Diabetes. Immunol Res 2023; 71:451-462. [PMID: 36595206 DOI: 10.1007/s12026-022-09355-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023]
Abstract
Th cells play an important role in pathogenesis of type 1 diabetes (T1D). Peripheral blood mononuclear cells were isolated from peripheral blood samples from newly diagnosed (ND), 1-year (1YD), and 5-year T1D (5YD) patients (n:8 of each group), 8 healthy controls (HC), and cultured for 24 h under unstimulated (US) and stimulated conditions. Cell ratios of Th1, Th2, Th17, Treg, and intracellular levels of IFN-γ, TNF-α, IL-10, TGF-β, IL-5, IL-13, IL-17, and IL-21 cytokines were evaluated using the flow cytometry. mRNA expressions of transcription factors T-bet, GATA3, ROR-γt, and FOXP3 of these cells were determined by real-time PCR. Reduced CD4+CD25high cell ratios were detected in ND. CD4+CD25high cells were found to be reduced in ND and 1YD compared to HC under IL-2-stimulated conditions. Intracellular IFN-γ and TNF-α levels were low in all patients under US and IL-12-stimulated conditions. IL-17A and IL-21 were found to be high in patients with IL-6-stimulated conditions. Expressions of IL-10 and TGF-β have been observed to be reduced in patients. Th1/Th2, Th17/Treg, and Th1/Treg ratios were higher in patient groups. FOXP3 and GATA3 mRNA expressions were found to be low in patients, while RORγt and T-bet mRNA levels were higher than HC. Th1, Th17, and Treg cells and their cytokines have been shown to be associated with type 1 diabetes.
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14
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Prentice B, Nicholson M, Lam GY. Cystic fibrosis related diabetes (CFRD) in the era of modulators: A scoping review. Paediatr Respir Rev 2022:S1526-0542(22)00086-0. [PMID: 36581478 DOI: 10.1016/j.prrv.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Cystic fibrosis-related diabetes (CFRD) is a common complication of CF that increases in incidence as patients age. Poor glycemic control has been shown to negatively impact lung function and weight, resulting in higher risk of recurrent pulmonary exacerbations. With the advent of highly effective modulator therapies (HEMT), patients with CF are living longer and healthier lives. Consequently, CFRD and its microvascular complications are rising in prominence, becoming one of the most urgent clinical concerns. As HEMT were developed with the primary focus of improving pulmonary outcomes, it is not clear from the original phase III studies what the short- or long-term benefits of modulators might be on CFRD development and trajectory. In this review, we will examine the pathophysiology of CFRD, summarize and synthesize the available evidence of HEMT impact on CFRD and describe the emerging research needs in this field.
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Affiliation(s)
- Bernadette Prentice
- Department of Respiratory Medicine, Sydney Children's Hospital, Randwick Australia; Molecular and Integrative Cystic Fibrosis (miCF) Research Centre, Randwick, Australia; Discipline of Paediatrics and Child Health, School of Clinical Medicine, University of New South Wales, Randwick, Australia
| | - Mike Nicholson
- Division of Respirology, Department of Medicine, Western University, Ontario, Canada
| | - Grace Y Lam
- Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Alberta, Canada.
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15
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Hanchang W, Wongmanee N, Yoopum S, Rojanaverawong W. Protective role of hesperidin against diabetes induced spleen damage: Mechanism associated with oxidative stress and inflammation. J Food Biochem 2022; 46:e14444. [PMID: 36165434 DOI: 10.1111/jfbc.14444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/21/2022] [Accepted: 09/16/2022] [Indexed: 01/14/2023]
Abstract
Diabetes mellitus is a metabolic disease affecting various organs, including the spleen and is characterized by chronic hyperglycemia. Oxidative and inflammatory stress are key mediators in the development of spleen damage caused by diabetes. This study aimed to examine the splenoprotective effect of hesperidin and the mechanisms underlying its capacity to reduce oxidative stress and inflammation-mediated spleen damage in diabetes. The diabetic rats used in this study were induced with a 65 mg per kg body weight of streptozotocin. This was followed by 4 weeks of continuous daily dosage of hesperidin treatment at 100 mg/kg body weight. The results showed that hesperidin improved spleen weight and histopathological alterations in the diabetic rats. The hesperidin-treated diabetic group showed a marked induction of SOD and GPx enzymes and moderated malondialdehyde level. This was in addition to an obvious decrease in the levels of TNF-α and NF-ᴋB in the diabetic rat spleen. Through a remarkable upregulation in Bcl-xL and downregulation in Bax and cleaved caspase-3 proteins, hesperidin supplementation rescued splenic cell apoptosis in the diabetic rats. These findings demonstrate the effectiveness of hesperidin in helping regulate Bcl-2 family proteins and inhibiting the oxidative stress and inflammatory status of hyperglycemia-mediated spleen apoptosis. PRACTICAL APPLICATIONS: Diabetes-related spleen damage increases immune dysfunction, which often results in the heightened risks of infection, morbidity and mortality in diabetic patients. In this work, hesperidin was used in the treatment of rats with diabetes-induced splenic damage. The results were highly encouraging with hesperidin consistently presenting beneficial antioxidant and anti-inflammatory qualities and splenoprotective effect. Research outcomes support the notion that hesperidin treatment could be considered a good strategy for the prevention of diabetic complications in the spleen.
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Affiliation(s)
- Wanthanee Hanchang
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Navinee Wongmanee
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Sasiwat Yoopum
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Worarat Rojanaverawong
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
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16
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Tang X. The risk of organ-based comorbidities in psoriasis: a systematic review and meta-analysis. An Bras Dermatol 2022; 97:612-623. [PMID: 35850940 PMCID: PMC9453528 DOI: 10.1016/j.abd.2021.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 02/06/2023] Open
Abstract
Background The close relationship between psoriasis and concomitant diseases is widely accepted. However, a comprehensive analysis of organ-based comorbidities in psoriasis is still lacking. Objective The authors aimed to present the risk of organ-based comorbidities in psoriasis by comparing the general population. Methods The authors retrieved a search of Pubmed, EMBASE, and Cochrane databases for studies reporting organ-based comorbidities in psoriasis versus the general population. Observational studies that met the following criteria were assessed: 1) Psoriasis diagnosis; 2) Cardiovascular or kidney or liver or respiratory or cerebrovascular outcomes; 3) Comparison group of individuals without psoriasis. Pooled Relative Risks (pRRs) and 95% Confidence Intervals (CIs) were calculated by using the random-effect model. Results Fifteen observational studies with 216,348 psoriatic patients and 9,896,962 individuals from the general population were included. Psoriasis showed a greater risk of organ-based comorbidities. Compared to the general population, pRR for all organ-based comorbidities was 1.20 (95% CI 1.11‒1.31) in psoriasis, and pRR was lower in mild 0.61 (95% CI 0.46‒0.81) than in moderate/severe patients. pRR was 1.20 (95% CI 1.11‒1.30) for cardiovascular, 1.56 (95% CI 1.20‒2.04), and 1.75 (95% CI 1.33‒2.29) for cerebrovascular and liver diseases, respectively. pRR for coexisting renal and cardiovascular events was 1.09 (95% CI 1.01‒1.18). pRR for coexisting renal and cerebrovascular events was 1.28 (95% CI 0.99‒1.66). pRR for coexisting renal and liver diseases was 1.46 (95% CI 1.10‒1.94). pRR for coexisting cardiovascular and liver diseases was 1.41 (95% CI 1.11‒1.80). Study limitations There is heterogeneity. Conclusion Psoriasis has a higher risk of single and multiple organ-based comorbidities than the general population. The present study will further improve attention to psoriasis as a systemic inflammatory disease.
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Affiliation(s)
- Xuemei Tang
- Southwest Medical University, Luzhou, Sichuan, China.
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Qin T, Hu S, Smink AM, de Haan BJ, Silva-Lagos LA, Lakey JR, de Vos P. Inclusion of extracellular matrix molecules and necrostatin-1 in the intracapsular environment of alginate-based microcapsules synergistically protects pancreatic β cells against cytokine-induced inflammatory stress. Acta Biomater 2022; 146:434-449. [PMID: 35500812 DOI: 10.1016/j.actbio.2022.04.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 11/01/2022]
Abstract
Immunoisolation of pancreatic islets in alginate-based microcapsules is a promising approach for grafting of islets in absence of immunosuppression. However, loss and damage to the extracellular matrix (ECM) during islet isolation enhance susceptibility of islets for inflammatory stress. In this study, a combined strategy was applied to reduce this stress by incorporating ECM components (collagen type IV/RGD) and necroptosis inhibitor, necrostatin-1 (Nec-1) in alginate-based microcapsules in vitro. To demonstrate efficacy, viability and function of MIN6 β-cells and human islets in capsules with collagen type IV/RGD and/or Nec-1 was investigated in presence and absence of IL-1β, IFN-γ and TNF-α. The combination of collagen type IV/RGD and Nec-1 had higher protective effects than the molecules alone. Presence of collagen type IV/RGD and Nec-1 in the intracapsular environment reduced cytokine-induced overproduction of free radical species and unfavorable shifts in mitochondrial dynamics. In addition, the ECM components collagen type IV/RGD prevented a cytokine induced suppression of the FAK/Akt pathway. Our data indicate that the inclusion of collagen type IV/RGD and Nec-1 in the intracapsular environment prevents islet-cell loss when exposed to inflammatory stress, which might contribute to higher survival of β-cells in the immediate period after transplantation. This approach of inclusion of stress reducing agents in the intracapsular environment of immunoisolating devices may be an effective way to enhance the longevity of encapsulated islet grafts. STATEMENT OF SIGNIFICANCE: Islet-cells in immunoisolated alginate-based microcapsules are very susceptible to inflammatory stress which impacts long-term survival of islet grafts. Here we show that incorporation of ECM components (collagen type IV/RGD) and necrostatin-1 (Nec-1) in the intracapsular environment of alginate-based capsules attenuates this susceptibility and promotes islet-cell survival. This effect induced by collagen type IV/RGD and Nec-1 was probably due to lowering free radical production, preventing mitochondrial dysfunction and by maintaining ECM/integrin/FAK/Akt signaling and Nec-1/RIP1/RIP3 signaling. Our study provides an effective strategy to extend longevity of islet grafts which might be of great potential for future clinical application of immunoisolated cells.
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Farnsworth NL, Piscopio RA, Schleicher WE, Ramirez DG, Miranda JG, Benninger RKP. Modulation of Gap Junction Coupling Within the Islet of Langerhans During the Development of Type 1 Diabetes. Front Physiol 2022; 13:913611. [PMID: 35837011 PMCID: PMC9274093 DOI: 10.3389/fphys.2022.913611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/09/2022] [Indexed: 01/07/2023] Open
Abstract
In type 1 diabetes (T1D), islet dysfunction occurs prior to diabetes onset. Pro-inflammatory cytokines can disrupt insulin secretion and Ca2+ homeostasis. Connexin36 (Cx36) gap junctions electrically couple β-cells to coordinate glucose-stimulated Ca2+ and insulin secretion. Cx36 gap junction coupling can also protect against cytokine-induced apoptosis. Our goal was to determine how islet gap junction coupling and Ca2+ dynamics are altered in mouse models of T1D prior to diabetes. Glucose tolerance was assessed in NOD and immunodeficient NOD-RAG1KO mice at 6-12 weeks age. Glucose-stimulated insulin secretion, Ca2+ dynamics, and gap junction coupling were measured in islets isolated at each age. Gap junction coupling was also measured in islets from mice that underwent transfer of diabetogenic splenocytes and from chromograninA knockout NOD mice. Cell death was measured in islets isolated from wild-type, Cx36 knockout or Cx36 over-expression mice, each treated with a cocktail of pro-inflammatory cytokines and KATP or SERCA activators/inhibitors. NOD mice over-expressing Cx36 were also monitored for diabetes development, and islets assessed for insulitis and apoptosis. NOD and NOD-RAG1KO controls showed similar glucose tolerance at all ages. Ca2+ dynamics and gap junction coupling were disrupted in islets of NOD mice at 9 weeks, compared to controls. Transfer of diabetogenic splenocytes also decreased gap junction coupling. Islets from chromograninA knockout mice displayed normal coupling. Overexpression of Cx36 protected islets from cytokine-induced apoptosis. A knockout of Cx36 amplified cytokine-induced apoptosis, which was reversed by KATP activation or SERCA activation. Cx36 overexpression in NOD mice delayed diabetes development compared to NOD controls. However, apoptosis and insulitis were not improved. Decreases in islet gap junction coupling occur prior to T1D onset. Such decreases alter islet susceptibility to apoptosis due to altered Ca2+. Future studies will determine if increasing Cx36 gap junction coupling in combination with restoring Ca2+ homeostasis protects against islet decline in T1D.
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Affiliation(s)
- Nikki L. Farnsworth
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, CO, United States,Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Robert A. Piscopio
- Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States,Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Wolfgang E. Schleicher
- Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States,Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - David G. Ramirez
- Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States,Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Jose G. Miranda
- Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States,Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Richard K. P. Benninger
- Barbara Davis Center for Diabetes, Universty of Colorado Anschutz Medical Campus, Aurora, CO, United States,Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States,*Correspondence: Richard K. P. Benninger,
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19
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Li J, Yan H, Xiang R, Yang W, Ye J, Yin R, Yang J, Chi Y. ATP Secretion and Metabolism in Regulating Pancreatic Beta Cell Functions and Hepatic Glycolipid Metabolism. Front Physiol 2022; 13:918042. [PMID: 35800345 PMCID: PMC9253475 DOI: 10.3389/fphys.2022.918042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Diabetes (DM), especially type 2 diabetes (T2DM) has become one of the major diseases severely threatening public health worldwide. Islet beta cell dysfunctions and peripheral insulin resistance including liver and muscle metabolic disorder play decisive roles in the pathogenesis of T2DM. Particularly, increased hepatic gluconeogenesis due to insulin deficiency or resistance is the central event in the development of fasting hyperglycemia. To maintain or restore the functions of islet beta cells and suppress hepatic gluconeogenesis is crucial for delaying or even stopping the progression of T2DM and diabetic complications. As the key energy outcome of mitochondrial oxidative phosphorylation, adenosine triphosphate (ATP) plays vital roles in the process of almost all the biological activities including metabolic regulation. Cellular adenosine triphosphate participates intracellular energy transfer in all forms of life. Recently, it had also been revealed that ATP can be released by islet beta cells and hepatocytes, and the released ATP and its degraded products including ADP, AMP and adenosine act as important signaling molecules to regulate islet beta cell functions and hepatic glycolipid metabolism via the activation of P2 receptors (ATP receptors). In this review, the latest findings regarding the roles and mechanisms of intracellular and extracellular ATP in regulating islet functions and hepatic glycolipid metabolism would be briefly summarized and discussed.
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Affiliation(s)
- Jing Li
- Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Han Yan
- Key Laboratory of Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Rui Xiang
- Key Laboratory of Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Weili Yang
- Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jingjing Ye
- Department of Central Laboratory and Institute of Clinical Molecular Biology, Peking University People’s Hospital, Beijing, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), National Center for Trauma Medicine, Trauma Medicine Center, Peking University People’s Hospital, Beijing, China
| | - Ruili Yin
- Beijing Key Laboratory of Diabetes Prevention and Research, Center for Endocrine Metabolic and Immune Disease, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Jichun Yang
- Key Laboratory of Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- *Correspondence: Jichun Yang, ; Yujing Chi,
| | - Yujing Chi
- Department of Central Laboratory and Institute of Clinical Molecular Biology, Peking University People’s Hospital, Beijing, China
- *Correspondence: Jichun Yang, ; Yujing Chi,
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20
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Farhadnejad H, Teymoori F, Mokhtari E, Mirmiran P, Azizi F. Higher scores of dietary and lifestyle inflammatory indices are associated with increased risk of insulin-related disorders in Iranian adults. Eur J Clin Nutr 2022; 76:1566-1575. [PMID: 35444270 DOI: 10.1038/s41430-022-01143-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 03/29/2022] [Accepted: 04/04/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES The roles of potential inflammation of diet and lifestyle in the risk of insulin-related disorders are unclear. In the current study, we aimed to assess the relationship between dietary inflammation scores (DIS), lifestyle inflammation scores (LIS), and dietary and lifestyle inflammation score (DLIS) and the risk of insulin resistance (IR) and hyperinsulinemia in Tehranian adults. SUBJECTS/METHODS A total of 1,244 participants, aged ≥20 years, who were free of insulin-related disorders at baseline (2006-08), were followed for 3.2 years (2009-11) to ascertain the incidence of hyperinsulinemia and IR. A food frequency questionnaire was used to determine the score of DIS, LIS, and DLIS at baseline. Logistic regression models were used to determine the odds ratio (ORs) of insulin-related disorders across tertiles of DIS, LIS, and DLIS. RESULTS Mean ± SD age of participants (42.7% men) was 43.0 ± 13.0 years. During the 3.2 years follow-up, the incidence of IR and hyperinsulinemia was 30.0% and 20.0%, respectively. In the multivariable model, there was a direct association between the higher score of DLIS (OR = 2.10; 95% CI: 1.17-3.74) and DIS (OR = 1.84; 95% CI: 1.09-3.11) with the risk of IR incident (P for trend <0.05). Also, the higher score of LIS was related to increased risk of IR (OR = 2.28; 95% CI: 1.19-4.37) and hyperinsulinemia (OR = 1.69; 95% CI: 1.02-2.85) (P for trend <0.05). However, no significant association was observed between the higher score of DLIS and DIS with risk of hyperinsulinemia CONCLUSION: The higher inflammatory potential of diet and lifestyle, determined by DLIS, DIS, and LIS scores, were associated with a higher risk of IR. Also, individuals with a higher score of LIS are more prone to hyperinsulinemia risk.
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Affiliation(s)
- Hossein Farhadnejad
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farshad Teymoori
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Ebrahim Mokhtari
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parvin Mirmiran
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. .,Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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21
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Kannan P, Karthikeyan P, Subramaniam N, Mohan T, Gopinath B, Chakrapani LN, Palanivelu S, Raghunathan M, Periandavan K. Gymnemic acid protects murine pancreatic β-cells by moderating hyperglycemic stress-induced inflammation and apoptosis in type 1 diabetic rats. J Biochem Mol Toxicol 2022; 36:e23050. [PMID: 35343011 DOI: 10.1002/jbt.23050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/02/2022] [Accepted: 03/10/2022] [Indexed: 11/08/2022]
Abstract
Type 1 diabetes is a chronic immune-mediated disease caused by pancreatic β-cell dysfunction with consequent severe insulin deficiency. Exacerbated blood glucose levels can cause oxidative stress in the pancreatic β-cells, which leads to inflammation, and apoptosis resulting in islet dysfunction. Although massive studies have been carried out to elucidate the causative factors for β-cell damage in diabetes, the therapeutic approach to pancreatic β-cell damage has not been extensively studied. Hence, the present study has been designed to delineate the role of gymnemic acid (GA) in protecting pancreatic β-cells in diabetic animals, with special reference to inflammation and apoptosis. Our data revealed that the treatment with GA significantly reverted the alteration in both biochemical and histochemical observations in young diabetic rats. Moreover, treatment with the GA downregulates the expression of proinflammatory markers (nuclear factor-κB, tumor necrosis factor-α, interleukin-[IL]-6, and IL-1β), proapoptotic proteins (Bax, cytochrome c, and cleaved caspase-3), as well as upregulates the expression of antiapoptotic protein Bcl-2 in diabetic rats. These findings suggest that the anti-inflammatory and antiapoptotic nature of GA mitigates β-cell damage in hyperglycemic rats.
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Affiliation(s)
- Pugazhendhi Kannan
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Porkodi Karthikeyan
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Nirmala Subramaniam
- Department of Biochemistry, University of Madras, Guindy Campus, Guindy, Chennai, India
| | - Thangarajeswari Mohan
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Bhavani Gopinath
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Lakshmi N Chakrapani
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Shanthi Palanivelu
- Department of Pathology, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Malathi Raghunathan
- Department of Pathology, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
| | - Kalaiselvi Periandavan
- Department of Medical Biochemistry, DR ALM PG IBMS, University of Madras, Taramani Campus, Taramani, Chennai, India
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22
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ArefNezhad R, Motedayyen H, Roghani-Shahraki H. Do cytokines associate periodontitis with metabolic disorders? An overview of current documents. Endocr Metab Immune Disord Drug Targets 2022; 22:778-786. [PMID: 35043774 DOI: 10.2174/1871530322666220119112026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/28/2021] [Accepted: 11/26/2021] [Indexed: 11/22/2022]
Abstract
Periodontitis is an oral chronic inflammatory condition affecting the adult population worldwide. Many microorganisms act as an initiator for induction of inflammatory immune responses, which participate in the destruction of connective tissue surrounding the teeth and thereby result in tooth loss. Cytokines may have indispensable roles in its pathogenesis through enhancing inflammatory and immune responses. Cytokines can affect functions of some cells of different tissues, such as the cells of the pancreas, liver, and adipose tissues. There is evidence that periodontitis is associated with metabolic disorders, like liver cirrhosis, obesity, and diabetes mellitus. Hence, this review was focused on determining how cytokines can participate in the correlation of periodontitis with metabolic disorders.
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Affiliation(s)
- Reza ArefNezhad
- Halal Research Center of IRI, FDA, Tehran, Iran
- Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Motedayyen
- Autoimmune Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran
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23
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Bartolomé A. Stem Cell-Derived β Cells: A Versatile Research Platform to Interrogate the Genetic Basis of β Cell Dysfunction. Int J Mol Sci 2022; 23:501. [PMID: 35008927 PMCID: PMC8745644 DOI: 10.3390/ijms23010501] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 02/07/2023] Open
Abstract
Pancreatic β cell dysfunction is a central component of diabetes progression. During the last decades, the genetic basis of several monogenic forms of diabetes has been recognized. Genome-wide association studies (GWAS) have also facilitated the identification of common genetic variants associated with an increased risk of diabetes. These studies highlight the importance of impaired β cell function in all forms of diabetes. However, how most of these risk variants confer disease risk, remains unanswered. Understanding the specific contribution of genetic variants and the precise role of their molecular effectors is the next step toward developing treatments that target β cell dysfunction in the era of personalized medicine. Protocols that allow derivation of β cells from pluripotent stem cells, represent a powerful research tool that allows modeling of human development and versatile experimental designs that can be used to shed some light on diabetes pathophysiology. This article reviews different models to study the genetic basis of β cell dysfunction, focusing on the recent advances made possible by stem cell applications in the field of diabetes research.
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Affiliation(s)
- Alberto Bartolomé
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
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24
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López-Bermudo L, Luque-Sierra A, Maya-Miles D, Gallego-Durán R, Ampuero J, Romero-Gómez M, Berná G, Martín F. Contribution of Liver and Pancreatic Islet Crosstalk to β-Cell Function/Dysfunction in the Presence of Fatty Liver. Front Endocrinol (Lausanne) 2022; 13:892672. [PMID: 35651973 PMCID: PMC9148952 DOI: 10.3389/fendo.2022.892672] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/12/2022] [Indexed: 11/13/2022] Open
Abstract
Tissue-to-tissue crosstalk regulates organ function, according to growing data. This phenomenon is relevant for pancreatic β-cells and the liver, as both tissues are involved in glucose homeostasis and lipid metabolism. The ability to fine-tune regulation and adaptive responses is enabled through communication between pancreatic β-cells and the liver. However, the crosstalk between both tissues changes when metabolic dysregulation is present. Factors and cargo from extracellular vesicles (EVs) released by liver and pancreatic β-cells that reach the circulation form the words of this interaction. The molecules released by the liver are called hepatokines and are usually secreted in response to the metabolic state. When hepatokines reach the pancreatic islets several mechanisms are initiated for their protection or damage. In the case of the crosstalk between pancreatic β-cells and the liver, only one factor has been found to date. This protein, pancreatic derived factor (PANDER) has been proposed as a novel linker between insulin resistance (IR) and type 2 diabetes mellitus (T2D) and could be considered a biomarker for non-alcoholic fatty liver disease (NAFLD) and T2D. Furthermore, the cargo released by EVs, mainly miRNAs, plays a significant role in this crosstalk. A better knowledge of the crosstalk between liver and pancreatic β-cells is essential to understand both diseases and it could lead to better prevention and new therapeutic options.
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Affiliation(s)
- Lucía López-Bermudo
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University Pablo Olavide, University of Seville, CSIC, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Amparo Luque-Sierra
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University Pablo Olavide, University of Seville, CSIC, Seville, Spain
| | - Douglas Maya-Miles
- Hospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Rocío Gallego-Durán
- Hospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Ampuero
- Hospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Manuel Romero-Gómez
- Hospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Genoveva Berná
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University Pablo Olavide, University of Seville, CSIC, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Franz Martín, ; Genoveva Berná,
| | - Franz Martín
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University Pablo Olavide, University of Seville, CSIC, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Franz Martín, ; Genoveva Berná,
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25
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Dinić S, Arambašić Jovanović J, Uskoković A, Mihailović M, Grdović N, Tolić A, Rajić J, Đorđević M, Vidaković M. Oxidative stress-mediated beta cell death and dysfunction as a target for diabetes management. Front Endocrinol (Lausanne) 2022; 13:1006376. [PMID: 36246880 PMCID: PMC9554708 DOI: 10.3389/fendo.2022.1006376] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/05/2022] [Indexed: 11/14/2022] Open
Abstract
The biggest drawback of a current diabetes therapy is the treatment of the consequences not the cause of the disease. Regardless of the diabetes type, preservation and recovery of functional pancreatic beta cells stands as the biggest challenge in the treatment of diabetes. Free radicals and oxidative stress are among the major mediators of autoimmune destruction of beta cells in type 1 diabetes (T1D) or beta cell malfunction and death provoked by glucotoxicity and insulin resistance in type 2 diabetes (T2D). Additionally, oxidative stress reduces functionality of beta cells in T2D by stimulating their de-/trans-differentiation through the loss of transcription factors critical for beta cell development, maturity and regeneration. This review summarizes up to date clarified redox-related mechanisms involved in regulating beta cell identity and death, underlining similarities and differences between T1D and T2D. The protective effects of natural antioxidants on the oxidative stress-induced beta cell failure were also discussed. Considering that oxidative stress affects epigenetic regulatory mechanisms involved in the regulation of pancreatic beta cell survival and insulin secretion, this review highlighted huge potential of epigenetic therapy. Special attention was paid on application of the state-of-the-art CRISPR/Cas9 technology, based on targeted epigenome editing with the purpose of changing the differentiation state of different cell types, making them insulin-producing with ability to attenuate diabetes. Clarification of the above-mentioned mechanisms could provide better insight into diabetes etiology and pathogenesis, which would allow development of novel, potentially more efficient therapeutic strategies for the prevention or reversion of beta cell loss.
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26
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Al-Selwi Y, Shaw JA, Kattner N. Understanding the Pancreatic Islet Microenvironment in Cystic Fibrosis and the Extrinsic Pathways Leading to Cystic Fibrosis Related Diabetes. CLINICAL MEDICINE INSIGHTS-ENDOCRINOLOGY AND DIABETES 2021; 14:11795514211048813. [PMID: 34675737 PMCID: PMC8524685 DOI: 10.1177/11795514211048813] [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: 04/30/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022]
Abstract
Cystic fibrosis (CF) is an autosomal recessive chronic condition
effecting approximately 70 000 to 100 000 people globally and is
caused by a loss-of-function mutation in the CF transmembrane
conductance regulator. Through improvements in clinical care, life
expectancy in CF has increased considerably associated with rising
incidence of secondary complications including CF-related diabetes
(CFRD). CFRD is believed to result from β-cell loss as well as
insufficient insulin secretion due to β-cell dysfunction, but the
underlying pathophysiology is not yet fully understood. Here we review
the morphological and cellular changes in addition to the
architectural remodelling of the pancreatic exocrine and endocrine
compartments in CF and CFRD pancreas. We consider also potential
underlying proinflammatory signalling pathways impacting on endocrine
and specifically β-cell function, concluding that further research
focused on these mechanisms may uncover novel therapeutic targets
enabling restoration of normal insulin secretion.
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Affiliation(s)
- Yara Al-Selwi
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - James Am Shaw
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK.,Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Nicole Kattner
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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27
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Naomi R, Bahari H, Yazid MD, Othman F, Zakaria ZA, Hussain MK. Potential Effects of Sweet Potato ( Ipomoea batatas) in Hyperglycemia and Dyslipidemia-A Systematic Review in Diabetic Retinopathy Context. Int J Mol Sci 2021; 22:10816. [PMID: 34639164 PMCID: PMC8509747 DOI: 10.3390/ijms221910816] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/29/2021] [Accepted: 09/06/2021] [Indexed: 12/15/2022] Open
Abstract
Hyperglycemia is a condition with high glucose levels that may result in dyslipidemia. In severe cases, this alteration may lead to diabetic retinopathy. Numerous drugs have been approved by officials to treat these conditions, but usage of any synthetic drugs in the long term will result in unavoidable side effects such as kidney failure. Therefore, more emphasis is being placed on natural ingredients due to their bioavailability and absence of side effects. In regards to this claim, promising results have been witnessed in the usage of Ipomoea batatas (I. batatas) in treating the hyperglycemic and dyslipidemic condition. Thus, the aim of this paper is to conduct an overview of the reported effects of I. batatas focusing on in vitro and in vivo trials in reducing high glucose levels and regulating the dyslipidemic condition. A comprehensive literature search was performed using Scopus, Web of Science, Springer Nature, and PubMed databases to identify the potential articles on particular topics. The search query was accomplished based on the Boolean operators involving keywords such as (1) Beneficial effect OR healing OR intervention AND (2) sweet potato OR Ipomoea batatas OR traditional herb AND (3) blood glucose OR LDL OR lipid OR cholesterol OR dyslipidemia. Only articles published from 2011 onwards were selected for further analysis. This review includes the (1) method of intervention and the outcome (2) signaling mechanism involved (3) underlying mechanism of action, and the possible side effects observed based on the phytoconstiuents isolated. The comprehensive literature search retrieved a total of 2491 articles using the appropriate keywords. However, on the basis of the inclusion and exclusion criteria, only 23 articles were chosen for further review. The results from these articles indicate that I. batatas has proven to be effective in treating the hyperglycemic condition and is able to regulate dyslipidemia. Therefore, this systematic review summarizes the signaling mechanism, mechanism of action, and phytoconstituents responsible for those activities of I. batatas in treating hyperglycemic based on the in vitro and in vivo study.
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Affiliation(s)
- Ruth Naomi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Hasnah Bahari
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Muhammad Dain Yazid
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia;
| | - Fezah Othman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Zainul Amiruddin Zakaria
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia;
- Halal Product Development Unit, Halal Product Research Institute, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Mohd Khairi Hussain
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
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28
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Sosa Alvarado C, Yang K, Qiu H, Mills E, Fouhse JM, Ju T, Buteau J, Field CJ, Willing BP, Chan CB. Transient antibiotic-induced changes in the neonatal swine intestinal microbiota impact islet expression profiles reducing subsequent function. Am J Physiol Regul Integr Comp Physiol 2021; 321:R303-R316. [PMID: 34259034 DOI: 10.1152/ajpregu.00090.2021] [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: 11/22/2022]
Abstract
Neonatal antibiotics administered to human infants initiate gut microbiota dysbiosis that may have long-term effects on body weight and metabolism. We examined antibiotic-induced adaptations in pancreatic islets of the piglet, a well-accepted model of human infant microbiota and pancreas development. Neonatal piglets randomized to amoxicillin [30 mg/kg body wt/day; n = 7, antibiotic (ANTI)] or placebo [vehicle control; n = 7, control (CON)] from postnatal day (PND)0-13 were euthanized at PND7, 14, and 49. The metabolic phenotype along with functional, immunohistological, and transcriptional phenotypes of the pancreatic islets were studied. The gut microbiome was characterized by 16S rRNA gene sequencing, and microbial metabolites and microbiome-sensitive host molecules were measured. Compared with CON, ANTI PND7 piglets had elevated transcripts of genes involved in glucagon-like peptide 1 ((GLP-1) synthesis or signaling in islets (P < 0.05) coinciding with higher plasma GLP-1 (P = 0.11), along with increased tumor necrosis factor α (Tnf) (P < 0.05) and protegrin 1 (Npg1) (P < 0.05). Antibiotic-induced relative increases in Escherichia, Coprococcus, Ruminococcus, Dehalobacterium, and Oscillospira of the ileal microbiome at PND7 normalized after antibiotic withdrawal. In ANTI islets at PND14, the expression of key regulators pancreatic and duodenal homeobox 1 (Pdx1), insulin-like growth factor-2 (Igf2), and transcription factor 7-like 2 (Tcf7l2) was downregulated, preceding a 40% reduction of β-cell area (P < 0.01) and islet insulin content at PND49 (P < 0.05). At PND49, a twofold elevated plasma insulin concentration (P = 0.07) was observed in ANTI compared with CON. We conclude that antibiotic treatment of neonatal piglets elicited gut microbial changes accompanied by phasic alterations in key regulatory genes in pancreatic islets at PND7 and 14. By PND49, reduced β-cell area and islet insulin content were accompanied by elevated nonfasted insulin despite normoglycemia, indicative of islet stress.
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Affiliation(s)
- Carla Sosa Alvarado
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Kaiyuan Yang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Hongbo Qiu
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
| | - Erinn Mills
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Janelle M Fouhse
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Tingting Ju
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Jean Buteau
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Benjamin P Willing
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine B Chan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.,Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
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29
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Santoso CMA, Ketti F, Bramantoro T, Zsuga J, Nagy A. Association between Oral Hygiene and Metabolic Syndrome: A Systematic Review and Meta-Analysis. J Clin Med 2021; 10:2873. [PMID: 34203460 PMCID: PMC8269064 DOI: 10.3390/jcm10132873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/14/2021] [Accepted: 06/18/2021] [Indexed: 12/14/2022] Open
Abstract
Emerging evidence has linked poor oral hygiene to metabolic syndrome (MetS), but previously, no summary of evidence has been conducted on the topic. This systematic review and meta-analysis aims to evaluate the associations of oral hygiene status and care with MetS. A systematic search of the PubMed and Web of Science databases from inception to 17 March 2021, and examination of reference lists was conducted to identify eligible observational studies. A random-effects model was applied to pool the effects of oral hygiene status and care on MetS. Thirteen studies met the inclusion criteria and had sufficient methodological quality. Good oral hygiene status (OR = 0.30 (0.13-0.66); I2 = 91%), frequent tooth brushing (OR = 0.68 (0.58-0.80); I2 = 89%), and frequent interdental cleaning (OR = 0.89 (0.81-0.99); I2 = 27%) were associated with a lower risk of MetS. Only one study examined the association between dental visits and MetS (OR = 1.10 (0.77-1.55)). Our findings suggested that there might be inverse associations of oral hygiene status, tooth-brushing frequency, and interdental cleaning with MetS. However, substantial heterogeneity for tooth-brushing frequency and inconsistent results for oral hygiene status in subgroup analyses were observed. There was insufficient evidence for the association between dental visits and MetS. Further longitudinal studies are needed to investigate these associations.
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Affiliation(s)
- Cornelia Melinda Adi Santoso
- Faculty of Public Health, University of Debrecen, 4028 Debrecen, Hungary; (C.M.A.S.); (F.K.); (J.Z.)
- Doctoral School of Health Sciences, University of Debrecen, 4028 Debrecen, Hungary
| | - Fera Ketti
- Faculty of Public Health, University of Debrecen, 4028 Debrecen, Hungary; (C.M.A.S.); (F.K.); (J.Z.)
| | - Taufan Bramantoro
- Department of Dental Public Health, Universitas Airlangga, Surabaya 60286, Indonesia;
| | - Judit Zsuga
- Faculty of Public Health, University of Debrecen, 4028 Debrecen, Hungary; (C.M.A.S.); (F.K.); (J.Z.)
| | - Attila Nagy
- Faculty of Public Health, University of Debrecen, 4028 Debrecen, Hungary; (C.M.A.S.); (F.K.); (J.Z.)
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30
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Duan J, Song Y, Zhang X, Wang C. Effect of ω-3 Polyunsaturated Fatty Acids-Derived Bioactive Lipids on Metabolic Disorders. Front Physiol 2021; 12:646491. [PMID: 34113260 PMCID: PMC8185290 DOI: 10.3389/fphys.2021.646491] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 04/26/2021] [Indexed: 12/23/2022] Open
Abstract
Arachidonic acid (ARA) is an important ω-6 polyunsaturated fatty acid (PUFA), and docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA) and n-3 docosapentaenoic acid (n-3 DPA) are three well-known ω-3 PUFAs. These fatty acids can be metabolized into a number of bioactive lipids. Eicosanoids derived from ARA have drawn great attention because of their important and complex biofunctions. Although EPA, DHA and n-3 DPA have also shown powerful biofunctions, we have fewer studies of metabolites derived from them than those from ARA. Recently, growing research has focused on the bioaction of ω-3 PUFA-derived metabolites, which indicates their great potential for treating metabolic disorders. Most of the functional studies of these bioactive lipids focused on their anti-inflammatory effects. However, several studies elucidated their direct effects on pancreatic β cells, hepatocytes, adipocytes, skeletal muscle cells, and endothelial cells. These researches revealed the importance of studying the functions of metabolites derived from ω-3 polyunsaturated fatty acids other than themselves. The current review summarizes research into the effects of ω-3 PUFA-derived oxylipins on metabolic disorders, including diabetes, non-alcoholic fatty liver disease, adipose tissue dysfunction, and atherosclerosis.
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Affiliation(s)
- Jinjie Duan
- Department of Physiology and Pathophysiology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Yayue Song
- Department of Physiology and Pathophysiology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Xu Zhang
- Department of Physiology and Pathophysiology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Chunjiong Wang
- Department of Physiology and Pathophysiology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Medical Epigenetics, Tianjin Medical University, Tianjin, China
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Al-Mofarji ST, Hussien H, Mohamed N, Hantoosh S, Abass M, Ali A. The association between gastric bacterial infection and low level of vitamin D among patients with type 2 diabetes mellitus. BAGHDAD JOURNAL OF BIOCHEMISTRY AND APPLIED BIOLOGICAL SCIENCES 2021. [DOI: 10.47419/bjbabs.v2i01.32] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objectives: The present research aimed to find an association between infection by Helicobacter pylori and vitamin D deficiency in type 2 diabetic Iraqis attending Al-Yarmouk Teaching Hospital.
Methods: According to fasting blood glucose, the samples were divided into a non-diabetic group with ten diabetic individuals and a diabetic group with thirty individuals.
Results: The anti-H. pylori (IgG) levels were 86.77±58.62 NTU/μL in diabetic patients compared with 10.12_7.40 NTU/μL in non-diabetic group. Vitamin D levels were decreased significantly in infected patients compared to non-infected subjects.
Conclusion: The H. pylori-infected patients have recorded the lowest level of vitamin D than non-infected individuals.
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Mosavat M, Mirsanjari M, Arabiat D, Smyth A, Whitehead L. The Role of Sleep Curtailment on Leptin Levels in Obesity and Diabetes Mellitus. Obes Facts 2021; 14:214-221. [PMID: 33756469 PMCID: PMC8138234 DOI: 10.1159/000514095] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 12/23/2020] [Indexed: 12/15/2022] Open
Abstract
Emerging evidence has identified sleep as a significant, but modifiable, risk factor for metabolic syndrome, diabetes, and obesity. Leptin, an adipocyte-derived peptide and a regulator of food intake and energy expenditure, has been shown to be associated with a short sleep duration in the pathophysiology of obesity and consequently type 2 diabetes. This review focuses on the current evidence indicating the effects of a short sleep duration on the regulation of leptin concentration in association with obesity and diabetes mellitus. In summary, the evidence suggests that sleep deprivation, by affecting leptin regulation, may lead to obesity and consequently development of type 2 diabetes through increased appetite and food intake. However, findings on the role of leptin in diabetes due to sleep deprivation are contradictory, and further studies with larger sample sizes are needed to confirm previous findings.
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Affiliation(s)
- Maryam Mosavat
- School of Nursing and Midwifery, Edith Cowan University, Joondalup, Washington, Australia,
| | - Mitra Mirsanjari
- Mazandaran University of Medical Sciences, Emam Khomeini Hospital, Mazandaran, Iran
| | - Diana Arabiat
- School of Nursing and Midwifery, Edith Cowan University, Joondalup, Washington, Australia
- Maternal and Child Nursing Department, The University of Jordan, Amman, Jordan
| | - Aisling Smyth
- School of Nursing and Midwifery, Edith Cowan University, Joondalup, Washington, Australia
| | - Lisa Whitehead
- School of Nursing and Midwifery, Edith Cowan University, Joondalup, Washington, Australia
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Moreau M, Benhaddou S, Dard R, Tolu S, Hamzé R, Vialard F, Movassat J, Janel N. Metabolic Diseases and Down Syndrome: How Are They Linked Together? Biomedicines 2021; 9:biomedicines9020221. [PMID: 33671490 PMCID: PMC7926648 DOI: 10.3390/biomedicines9020221] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022] Open
Abstract
Down syndrome is a genetic disorder caused by the presence of a third copy of chromosome 21, associated with intellectual disabilities. Down syndrome is associated with anomalies of both the nervous and endocrine systems. Over the past decades, dramatic advances in Down syndrome research and treatment have helped to extend the life expectancy of these patients. Improved life expectancy is obviously a positive outcome, but it is accompanied with the need to address previously overlooked complications and comorbidities of Down syndrome, including obesity and diabetes, in order to improve the quality of life of Down syndrome patients. In this focused review, we describe the associations between Down syndrome and comorbidities, obesity and diabetes, and we discuss the understanding of proposed mechanisms for the association of Down syndrome with metabolic disorders. Drawing molecular mechanisms through which Type 1 diabetes and Type 2 diabetes could be linked to Down syndrome could allow identification of novel drug targets and provide therapeutic solutions to limit the development of metabolic and cognitive disorders.
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Affiliation(s)
- Manon Moreau
- Laboratoire Processus Dégénératifs, Université de Paris, BFA, UMR 8251, CNRS, Stress et Vieillissemen, F-75013 Paris, France; (M.M.); (S.B.); (R.D.)
| | - Soukaina Benhaddou
- Laboratoire Processus Dégénératifs, Université de Paris, BFA, UMR 8251, CNRS, Stress et Vieillissemen, F-75013 Paris, France; (M.M.); (S.B.); (R.D.)
| | - Rodolphe Dard
- Laboratoire Processus Dégénératifs, Université de Paris, BFA, UMR 8251, CNRS, Stress et Vieillissemen, F-75013 Paris, France; (M.M.); (S.B.); (R.D.)
- Genetics Deptartment, CHI Poissy St Germain-en-Laye, F-78300 Poissy, France;
- Université Paris-Saclay, UVSQ, INRAE, ENVA, BREED, F-78350 Jouy-en-Josas, France
| | - Stefania Tolu
- Laboratoire de Biologie et Pathologie du Pancréas Endocrine, Université de Paris, BFA, UMR 8251, CNRS, F-75013 Paris, France; (S.T.); (R.H.); (J.M.)
| | - Rim Hamzé
- Laboratoire de Biologie et Pathologie du Pancréas Endocrine, Université de Paris, BFA, UMR 8251, CNRS, F-75013 Paris, France; (S.T.); (R.H.); (J.M.)
| | - François Vialard
- Genetics Deptartment, CHI Poissy St Germain-en-Laye, F-78300 Poissy, France;
- Université Paris-Saclay, UVSQ, INRAE, ENVA, BREED, F-78350 Jouy-en-Josas, France
| | - Jamileh Movassat
- Laboratoire de Biologie et Pathologie du Pancréas Endocrine, Université de Paris, BFA, UMR 8251, CNRS, F-75013 Paris, France; (S.T.); (R.H.); (J.M.)
| | - Nathalie Janel
- Laboratoire Processus Dégénératifs, Université de Paris, BFA, UMR 8251, CNRS, Stress et Vieillissemen, F-75013 Paris, France; (M.M.); (S.B.); (R.D.)
- Correspondence: ; Tel.: +33-1-57-27-83-60; Fax: +33-1-57-27-83-54
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34
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Coderre L, Debieche L, Plourde J, Rabasa-Lhoret R, Lesage S. The Potential Causes of Cystic Fibrosis-Related Diabetes. Front Endocrinol (Lausanne) 2021; 12:702823. [PMID: 34394004 PMCID: PMC8361832 DOI: 10.3389/fendo.2021.702823] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/06/2021] [Indexed: 12/16/2022] Open
Abstract
Cystic fibrosis (CF) is a genetic disease caused by mutations in the cystic fibrosis transmembrane conductance regulator gene (CFTR). Cystic fibrosis-related diabetes (CFRD) is the most common comorbidity, affecting more than 50% of adult CF patients. Despite this high prevalence, the etiology of CFRD remains incompletely understood. Studies in young CF children show pancreatic islet disorganization, abnormal glucose tolerance, and delayed first-phase insulin secretion suggesting that islet dysfunction is an early feature of CF. Since insulin-producing pancreatic β-cells express very low levels of CFTR, CFRD likely results from β-cell extrinsic factors. In the vicinity of β-cells, CFTR is expressed in both the exocrine pancreas and the immune system. In the exocrine pancreas, CFTR mutations lead to the obstruction of the pancreatic ductal canal, inflammation, and immune cell infiltration, ultimately causing the destruction of the exocrine pancreas and remodeling of islets. Both inflammation and ductal cells have a direct effect on insulin secretion and could participate in CFRD development. CFTR mutations are also associated with inflammatory responses and excessive cytokine production by various immune cells, which infiltrate the pancreas and exert a negative impact on insulin secretion, causing dysregulation of glucose homeostasis in CF adults. In addition, the function of macrophages in shaping pancreatic islet development may be impaired by CFTR mutations, further contributing to the pancreatic islet structural defects as well as impaired first-phase insulin secretion observed in very young children. This review discusses the different factors that may contribute to CFRD.
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Affiliation(s)
- Lise Coderre
- Immunology-Oncology Section, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada
| | - Lyna Debieche
- Immunology-Oncology Section, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada
- Département de médecine, Université de Montréal, Montréal, QC, Canada
| | - Joëlle Plourde
- Immunology-Oncology Section, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada
- Département de médecine, Université de Montréal, Montréal, QC, Canada
| | - Rémi Rabasa-Lhoret
- Division of Cardiovascular and Metabolic Diseases, Institut de recherche clinique de Montréal, Montréal, QC, Canada
- Département de nutrition, Université de Montréal, Montréal, QC, Canada
- Cystic Fibrosis Clinic, Centre Hospitalier de l’Université de Montréal (CHUM), Montréal, QC, Canada
| | - Sylvie Lesage
- Immunology-Oncology Section, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada
- Département de microbiologie, infectiologie et immunologie, Université de Montréal, Montréal, QC, Canada
- *Correspondence: Sylvie Lesage,
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35
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Expression of miRNA-29 in Pancreatic β Cells Promotes Inflammation and Diabetes via TRAF3. Cell Rep 2021; 34:108576. [PMID: 33406428 DOI: 10.1016/j.celrep.2020.108576] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/23/2020] [Accepted: 12/09/2020] [Indexed: 12/18/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is recognized as a chronic, low-grade inflammatory disease characterized by insulin resistance and pancreatic β cell dysfunction; however, the underlying molecular mechanism remains unclear. Here, we report a key β cell-macrophage crosstalk pathway mediated by the miRNA-29-TNF-receptor-associated factor 3 (TRAF3) axis. β cell-specific transgenic miR-29a/b/c mice are predisposed to develop glucose intolerance and insulin resistance when fed a high-fat diet (HFD). The metabolic effect of β cell miR-29 is largely mediated through macrophages because either depletion of macrophages or reconstitution with miR-29-signaling defective bone marrow improves metabolic parameters in the transgenic mice. Mechanistically, our data show that miR-29 promotes the recruitment and activation of circulating monocytes and macrophages and, hence, inflammation, via miR-29 exosomes in a TRAF3-dependent manner. Our results demonstrate the ability of β cells to modulate the systemic inflammatory tone and glucose homeostasis via miR-29 in response to nutrient overload.
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36
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Pakhomova A, Pershina O, Nebolsin V, Ermakova N, Krupin V, Sandrikina L, Pan E, Widera D, Dygai A, Skurikhin E. Bisamide Derivative of Dicarboxylic Acid Contributes to Restoration of Testicular Tissue Function and Influences Spermatogonial Stem Cells in Metabolic Disorders. Front Cell Dev Biol 2020; 8:562358. [PMID: 33344442 PMCID: PMC7744787 DOI: 10.3389/fcell.2020.562358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/30/2020] [Indexed: 11/13/2022] Open
Abstract
Metabolic syndrome can lead to several challenging complications including degeneration of the pancreas and hypogonadism. Recently, we have shown that Bisamide Derivative of Dicarboxylic Acid (BDDA) can contribute to pancreatic restoration in mice with metabolic disorders via its positive effects on lipid and glucose metabolism, and by increasing the numbers of pancreatic stem cells. In the present study, we hypothesized that BDDA might also be effective in restoring hypogonadism caused by metabolic syndrome. Experiments were performed on male C57BL/6 mice with hypogonadism, where metabolic disorders have been introduced by a combination of streptozotocin treatment and high fat diet. Using a combination of histological and biochemical methods along with a flow cytometric analysis of stem and progenitor cell markers, we evaluated the biological effects of BDDA on testicular tissue, germ cells, spermatogonial stem cells in vitro and in vivo, as well as on fertility. We demonstrate that in mice with metabolic disorders, BDDA has positive effects on spermatogenesis and restores fertility. We also show that BDDA exerts its therapeutic effects by reducing inflammation and by modulating spermatogonial stem cells. Thus, our results suggest that BDDA could represent a promising lead compound for the development of novel therapeutics able to stimulate regeneration of the testicular tissue and to restore fertility in hypogonadism resulting from complications of metabolic syndrome.
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Affiliation(s)
- Angelina Pakhomova
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Olga Pershina
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | | | - Natalia Ermakova
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Vyacheslav Krupin
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Lubov Sandrikina
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Edgar Pan
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Darius Widera
- Stem Cell Biology and Regenerative Medicine Group, School of Pharmacy, University of Reading, Reading, United Kingdom
| | - Alexander Dygai
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
| | - Evgenii Skurikhin
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russia
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Chen S, Sbuh N, Veedu RN. Antisense Oligonucleotides as Potential Therapeutics for Type 2 Diabetes. Nucleic Acid Ther 2020; 31:39-57. [PMID: 33026966 DOI: 10.1089/nat.2020.0891] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Type 2 diabetes (T2D) is a chronic metabolic disorder characterized by persistent hyperglycemia resulting from inefficient signaling and insufficient production of insulin. Conventional management of T2D has largely relied on small molecule-based oral hypoglycemic medicines, which do not halt the progression of the disease due to limited efficacy and induce adverse effects as well. To this end, antisense oligonucleotide has attracted immense attention in developing antidiabetic agents because of their ability to downregulate the expression of disease-causing genes at the RNA and protein level. To date, seven antisense agents have been approved by the United States Food and Drug Administration for therapies of a variety of human maladies, including genetic disorders. Herein, we provide a comprehensive review of antisense molecules developed for suppressing the causative genes believed to be responsible for insulin resistance and hyperglycemia toward preventing and treating T2D.
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Affiliation(s)
- Suxiang Chen
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia.,Perron Institute for Neurological and Translational Science, Perth, Australia
| | - Nabayet Sbuh
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia.,Perron Institute for Neurological and Translational Science, Perth, Australia
| | - Rakesh N Veedu
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia.,Perron Institute for Neurological and Translational Science, Perth, Australia
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Carbone F, Bonaventura A, Liberale L, Paolino S, Torre F, Dallegri F, Montecucco F, Cutolo M. Atherosclerosis in Rheumatoid Arthritis: Promoters and Opponents. Clin Rev Allergy Immunol 2020; 58:1-14. [PMID: 30259381 DOI: 10.1007/s12016-018-8714-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Substantial epidemiological data identified cardiovascular (CV) diseases as a main cause of mortality in patients with rheumatoid arthritis (RA). In light of this, RA patients may benefit from additional CV risk screening and more intensive prevention strategies. Nevertheless, current algorithms for CV risk stratification still remain tailored on general population and are burdened by a significant underestimation of CV risk in RA patients. Acute CV events in patients with RA are largely related to an accelerated atherosclerosis. As pathophysiological features of atherosclerosis overlap those occurring in the inflamed RA synovium, the understanding of those common pathways represents an urgent need and a leading challenge for CV prevention in patients with RA. Genetic background, metabolic status, gut microbiome, and systemic inflammation have been also suggested as additional key pro-atherosclerotic factors. The aim of this narrative review is to update the current knowledge about pathophysiology of atherogenesis in RA patients and potential anti-atherosclerotic effects of disease-modifying anti-rheumatic drugs.
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Affiliation(s)
- Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Aldo Bonaventura
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,Center for Molecular Cardiology, University of Zürich, 12 Wagistrasse, 8952, Schlieren, Switzerland
| | - Sabrina Paolino
- Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine, University of Genoa, San Martino Polyclinic Hospital, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa, 10 Largo Benzi, 16132, Genoa, Italy
| | - Francesco Torre
- IRCCS Ospedale Policlinico San Martino Genoa, 10 Largo Benzi, 16132, Genoa, Italy.,Clinic of Emergency Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Franco Dallegri
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 10 Largo Benzi, 16132, Genoa, Italy
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 10 Largo Benzi, 16132, Genoa, Italy.,First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Maurizio Cutolo
- IRCCS Ospedale Policlinico San Martino Genoa, 10 Largo Benzi, 16132, Genoa, Italy. .,Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, San Martino Polyclinic Hospital, Genoa, Italy.
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39
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Maluf S, Salgado JV, Cysne DN, Camelo DMF, Nascimento JR, Maluf BVT, Silva LDM, Belfort MRDC, Silva LA, Guerra RNM, Salgado Filho N, Nascimento FRF. Increased Glycated Hemoglobin Levels in Patients With Helicobacter pylori Infection Are Associated With the Grading of Chronic Gastritis. Front Immunol 2020; 11:2121. [PMID: 33013895 PMCID: PMC7511518 DOI: 10.3389/fimmu.2020.02121] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022] Open
Abstract
Background Recent studies have found an association between Helicobacter pylori infection and prediabetes. Whether H. pylori per se or host factors are involved in the disturbance of glycated hemoglobin needs further investigation. The aim of this study was to determine the association of glycated hemoglobin levels with endoscopic diagnosis and the inflammatory response in H. pylori infection. Methods A cross-sectional study was carried out in 88 dyspeptic non-diabetic adults who underwent esophagogastroduodenoscopy. The diagnosis of H. pylori infection was performed through urease test and histopathological exam. Cases were initially distributed into two groups: control (without H. pylori infection, n = 22) and HP (patients with H. pylori infection, n = 66). HbA1c was measured to determine prediabetes status according to the American Diabetes Association criteria, and then the groups were subdivided into non-prediabetic (n = 14), prediabetic (n = 8), non-prediabetic HP (n = 26) and prediabetic HP (n = 40) groups. Gastric mucosa was histologically evaluated to determine H. pylori density and inflammatory activity according to Sydney System. To investigate the balance of anti-inflammatory and pro-inflammatory cytokines we measured interleukin 10 (anti-inflammatory) and Tumor Necrosis Factor-a (pro-inflammatory) in the plasma or in the gastric mucosa. Results Patients with H. pylori infection had higher mean HbA1c levels than those without H. pylori infection. However, increased HbA1c levels were not associated with H. pylori-related factors but with the bacterial density, the intensity of inflammation and the activity of the chronic gastritis. In addition, H. pylori infection per se did not alter IL-10 and TNF-α neither in the plasma nor in the gastric mucosa, but the bacterial density was negatively correlated with systemic and local IL-10 expression. Although no correlation was found between systemic cytokines and HbA1c levels, local anti-inflammatory cytokine was correlated with HbA1c levels. Conclusion Long-term H. pylori infection is associated with prediabetes. This association is not related to the presence of H. pylori per se but depends on the extent of bacterial colonization and the degree of both local inflammation and activity of the chronic gastritis.
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Affiliation(s)
- Selma Maluf
- Health Science Graduate Program, Federal University of Maranhão, São Luís, Brazil.,Gastroenterology Service of the University Hospital, Federal University of Maranhão, São Luís, Brazil.,Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | - João Victor Salgado
- Department of Physiological Sciences, Federal University of Maranhão, São Luís, Brazil
| | - Dalila Nunes Cysne
- Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | | | - Johnny Ramos Nascimento
- Health Science Graduate Program, Federal University of Maranhão, São Luís, Brazil.,Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | - Bianca Vitória T Maluf
- Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | | | | | - Lucilene Amorim Silva
- Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil.,Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | - Rosane Nassar Meireles Guerra
- Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil.,Department of Pathology, Federal University of Maranhão, São Luís, Brazil
| | | | - Flávia Raquel F Nascimento
- Immunophysiology Laboratory, Department of Pathology, Federal University of Maranhão, São Luís, Brazil.,Department of Pathology, Federal University of Maranhão, São Luís, Brazil
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40
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Mussa BM, Srivastava A, Mohammed AK, Verberne AJM. Nitric oxide interacts with cholinoceptors to modulate insulin secretion by pancreatic β cells. Pflugers Arch 2020; 472:1469-1480. [PMID: 32803305 PMCID: PMC7476970 DOI: 10.1007/s00424-020-02443-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/17/2020] [Accepted: 07/31/2020] [Indexed: 01/09/2023]
Abstract
Dysfunction of the pancreatic β cells leads to several chronic disorders including diabetes mellitus. Several mediators and mechanisms are known to be involved in the regulation of β cell secretory function. In this study, we propose that cytokine-induced nitric oxide (NO) production interacts with cholinergic mechanisms to modulate insulin secretion from pancreatic β cells. Using a rat insulinoma cell line INS-1, we demonstrated that β cell viability decreases significantly in the presence of SNAP (NO donor) in a concentration- and time-dependent manner. Cell viability was also found to be decreased in the presence of a combined treatment of SNAP with SMN (muscarinic receptor antagonist). We then investigated the impact of these findings on insulin secretion and found a significant reduction in glucose uptake by INS-1 cells in the presence of SNAP and SMN as compared with control. Nitric oxide synthase 3 gene expression was found to be significantly reduced in response to combined treatment with SNAP and SMN suggesting an interaction between the cholinergic and nitrergic systems. The analysis of gene and protein expression further pin-pointed the involvement of M3 muscarinic receptors in the cholinergic pathway. Upon treatment with cytokines, reduced cell viability was observed in the presence of TNF-α and IFN-γ. A significant reduction in insulin secretion was also noted after treatment with TNF-α and IFN-γ and IL1-β. The findings of the present study have shown for the first time that the inhibition of the excitatory effects of cholinergic pathways on glucose-induced insulin secretion may cause β cell injury and dysfunction of insulin secretion in response to cytokine-induced NO production.
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Affiliation(s)
- Bashair M Mussa
- Basic Medical Science Department, College of Medicine, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates.
| | - Ankita Srivastava
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates
| | - Abdul Khader Mohammed
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates
| | - Anthony J M Verberne
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, 3084, Australia
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Kouitcheu Mabeku LB, Noundjeu Ngamga ML, Leundji H. Helicobacter pylori infection, a risk factor for Type 2 diabetes mellitus: a hospital-based cross-sectional study among dyspeptic patients in Douala-Cameroon. Sci Rep 2020; 10:12141. [PMID: 32699242 PMCID: PMC7376106 DOI: 10.1038/s41598-020-69208-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023] Open
Abstract
Diabetic mellitus patients are usually prone to chronic infections. However, there have been contradictory reports about the association between H. pylori infection and type II diabetes. The present study is aimed at evaluating the prevalence of Helicobacter pylori infection among type 2 dyspeptic diabetic patients in the littoral region of Cameroon. This cross sectional study comprised 93 type 2 diabetic dyspeptic patients and 112 non-diabetic dyspeptic patients attending the Gastroenterology Department at two reference hospitals in Douala-Cameroon. The study was approved by the local Ethical Committee of Medical Sciences. Participants were screened for the presence of both type 2 diabetes and H. pylori infection. Body mass index (BMI) of all the participants was also recorded. Data was analyzed using SSPS statistical package. H. pylori infection was found in 73.11% of diabetic patients versus 58.05% in non-diabetic participants, this difference was found to be significant (OR = 1.472, p = 0.0279). This relationship persists even when adjusted to factors such as age and income level of participants. Infected participants from age group ≥ 55 years and those with high income were those with a higher risk to develop diabetes. Infected patients with high BMI were more prone to develops diabetic mellitus compared with infected patients with normal BMI (p = 0.0034). Also, participant with high BMI were more prone to develops diabetic mellitus whether they were infected or not. Patients having both H. pylori + ve and BMI ≥ 25 kg/m2 were significantly more affected by diabetic mellitus than those in the others combined groups (p < 0.0001), suggested that high BMI and H. pylori infection together or not are factors that favor diabetes mellitus development. Separately or not, H. pylori infection and high BMI were risk factor for diabetes mellitus in our milieu.
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Affiliation(s)
- Laure Brigitte Kouitcheu Mabeku
- Microbiology and Pharmacology Laboratory, Department of Biochemistry, Faculty of Science, University of Dschang, P. O. Box 67, Dschang, Cameroon.
| | - Michelle Larissa Noundjeu Ngamga
- Microbiology and Pharmacology Laboratory, Department of Biochemistry, Faculty of Science, University of Dschang, P. O. Box 67, Dschang, Cameroon
| | - Hubert Leundji
- Gastroenterology Department, Laquintinie Hospital of Douala, P. O. Box 4035, Douala, Cameroon
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Rattanaporn P, Tongsima S, Mandrup-Poulsen T, Svasti S, Tanyong D. Combination of ferric ammonium citrate with cytokines involved in apoptosis and insulin secretion of human pancreatic beta cells related to diabetes in thalassemia. PeerJ 2020; 8:e9298. [PMID: 32587797 PMCID: PMC7304432 DOI: 10.7717/peerj.9298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/14/2020] [Indexed: 01/09/2023] Open
Abstract
Background Diabetes mellitus (DM) is a common complication found in β-thalassemia patients. The mechanism of DM in β-thalassemia patients is still unclear, but it could be from an iron overload and increase of some cytokines, such as interleukin1-β (IL-1β) and tumor necrosis factor-α (TNF-α). The objective of this study was to study the effect of interaction between ferric ammonium citrate (FAC) and cytokines, IL-1β and TNF-α, on 1.1B4 human pancreatic β-cell line. Methods The effect of the combination of FAC and cytokines on cell viability was studied by MTT assay. Insulin secretion was assessed by the enzyme-linked immunosorbent assay (ELISA). The reactive oxygen species (ROS) and cell apoptosis in normal and high glucose condition were determined by flow cytometer. In addition, gene expression of apoptosis, antioxidant; glutathione peroxidase 1 (GPX1) and superoxide dismutase 2 (SOD2), and insulin secretory function were studied by real-time polymerase chain reaction (Real-time PCR). Results The findings revealed that FAC exposure resulted in the decrease of cell viability and insulin-release, and the induction of ROS and apoptosis in pancreatic cells. Interestingly, a combination of FAC and cytokines had an additive effect on SOD2 antioxidants' genes expression and endoplasmic reticulum (ER) stress. In addition, it reduced the insulin secretion genes expression; insulin (INS), glucose kinase (GCK), protein convertase 1 (PSCK1), and protein convertase 2 (PSCK2). Moreover, the highest ROS and the lowest insulin secretion were found in FAC combined with IL-1β and TNF-α in the high-glucose condition of human pancreatic beta cell, which could be involved in the mechanism of DM development in β-thalassemia patients.
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Affiliation(s)
- Patchara Rattanaporn
- Department of Clinical Microscopic, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand.,Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand.,National Center for Genetics Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Thomas Mandrup-Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Saovaros Svasti
- Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand.,Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Dalina Tanyong
- Department of Clinical Microscopic, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
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43
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Truong NTT, Lydic TA, Bazil JN, Suryadevara A, Olson LK. Regulation of lipid metabolism in pancreatic beta cells by interferon gamma: A link to anti-viral function. Cytokine 2020; 133:155147. [PMID: 32492632 DOI: 10.1016/j.cyto.2020.155147] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/01/2020] [Accepted: 05/25/2020] [Indexed: 12/22/2022]
Abstract
Interferons (IFN) have been shown to alter lipid metabolism in immune and some non-hematopoietic cells and this affects host cell response to pathogens. In type 1 diabetes, IFNγ acts as a proinflammatory cytokine that, along with other cytokines, is released during pancreatic beta cell autoinflammation and contributes to immune response and beta cell dysfunction. The hypothesis tested herein is that IFN modifies beta cell lipid metabolism and this is associated with enhanced anti-viral response and beta cell stress. Treatment of INS-1 cells with IFNγ for 6 to 24 h led to a dynamic change in TAG and lipid droplet (LD) levels, with a decrease at 6 h and an increase at 24 h. The later accumulation of TAG was associated with increased de novo lipogenesis (DNL), and impaired mitochondrial fatty acid oxidation (FAO). Gene expression results suggested that IFNγ regulates lipolytic, lipogenic, LD and FAO genes in a temporal manner. The changes in lipid gene expression are dependent on the classical Janus kinase (JAK) pathway. Pretreatment with IFNγ robustly enhanced anti-viral gene expression induced by the viral mimetic polyinosinic: polycytidylic acid (PIC), and this potentiating effect of IFNγ was markedly attenuated by inhibitors of DNL. The IFNγ-induced accumulation of lipid, however, was insufficient to cause endoplasmic reticulum (ER) stress. These studies demonstrated a non-canonical effect of IFNγ in regulation of pancreatic beta cell lipid metabolism that is intimately linked with host cell defense and might alter cellular function early in the progression to type 1 diabetes.
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Affiliation(s)
- Nguyen T T Truong
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Todd A Lydic
- Department of Physiology, Michigan State University, East Lansing, MI, United States; Mass Spectrometry Core (MMD-CMSC), Michigan State University, East Lansing, MI, United States
| | - Jason N Bazil
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Abhijeet Suryadevara
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - L Karl Olson
- Department of Physiology, Michigan State University, East Lansing, MI, United States.
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Antidiabetic Effects of Bisamide Derivative of Dicarboxylic Acid in Metabolic Disorders. Int J Mol Sci 2020; 21:ijms21030991. [PMID: 32028560 PMCID: PMC7037053 DOI: 10.3390/ijms21030991] [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: 01/21/2020] [Revised: 01/31/2020] [Accepted: 01/31/2020] [Indexed: 01/02/2023] Open
Abstract
In clinical practice, the metabolic syndrome can lead to multiple complications, including diabetes. It remains unclear which component of the metabolic syndrome (obesity, inflammation, hyperglycemia, or insulin resistance) has the strongest inhibitory effect on stem cells involved in beta cell regeneration. This makes it challenging to develop effective treatment options for complications such as diabetes. In our study, experiments were performed on male C57BL/6 mice where metabolic disorders have been introduced experimentally by a combination of streptozotocin-treatment and a high-fat diet. We evaluated the biological effects of Bisamide Derivative of Dicarboxylic Acid (BDDA) and its impact on pancreatic stem cells in vivo. To assess the impact of BDDA, we applied a combination of histological and biochemical methods along with a cytometric analysis of stem cell and progenitor cell markers. We show that in mice with metabolic disorders, BDDA has a positive effect on lipid and glucose metabolism. The pancreatic restoration was associated with a decrease of the inhibitory effects of inflammation and obesity factors on pancreatic stem cells. Our data shows that BDDA increases the number of pancreatic stem cells. Thus, BDDA could be used as a new compound for treating complication of the metabolic syndrome such as diabetes.
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45
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Yang W, Chi Y, Meng Y, Chen Z, Xiang R, Yan H, Yang J. FAM3A plays crucial roles in controlling PDX1 and insulin expressions in pancreatic beta cells. FASEB J 2020; 34:3915-3931. [PMID: 31944392 DOI: 10.1096/fj.201902368rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/22/2019] [Accepted: 12/24/2019] [Indexed: 11/11/2022]
Abstract
So far, the mechanism that links mitochondrial dysfunction to PDX1 inhibition in the pathogenesis of pancreatic β cell dysfunction under diabetic condition remains largely unclear. This study determined the role of mitochondrial protein FAM3A in regulating PDX1 expression in pancreatic β cells using gain- and loss-of function methods in vitro and in vivo. Within pancreas, FAM3A is highly expressed in β, α, δ, and pp cells of islets. Islet FAM3A expression was correlated with insulin expression under physiological and diabetic conditions. Mice with specific knockout of FAM3A in islet β cells exhibited markedly blunted insulin secretion and glucose intolerance. FAM3A-deficient islets showed significant decrease in PDX1 expression, and insulin expression and secretion. FAM3A overexpression upregulated PDX1 and insulin expressions, and augmented insulin secretion in cultured islets and β cells. Mechanistically, FAM3A enhanced ATP production to elevate cellular Ca2+ level and promote insulin secretion. Furthermore, FAM3A-induced ATP release activated CaM to function as a co-activator of FOXA2, stimulating PDX1 gene transcription. In conclusion, FAM3A plays crucial roles in controlling PDX1 and insulin expressions in pancreatic β cells. Inhibition of FAM3A will trigger mitochondrial dysfunction to repress PDX1 and insulin expressions.
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Affiliation(s)
- Weili Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China.,Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yujing Chi
- Department of Central Laboratory & Institute of Clinical Molecular Biology, Peking University People's Hospital, Beijing, China
| | - Yuhong Meng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Zhenzhen Chen
- State Key Laboratory of Cardiovascular Disease, Hypertension Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rui Xiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Han Yan
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Jichun Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
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Narrow-Leafed Lupin ( Lupinus angustifolius L.) Seeds Gamma-Conglutin is an Anti-Inflammatory Protein Promoting Insulin Resistance Improvement and Oxidative Stress Amelioration in PANC-1 Pancreatic Cell-Line. Antioxidants (Basel) 2019; 9:antiox9010012. [PMID: 31877933 PMCID: PMC7023629 DOI: 10.3390/antiox9010012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 01/01/2023] Open
Abstract
(1) Background: Inflammation molecular cues and insulin resistance development are some of the main contributors for the development and advance of the pathogenesis of inflammatory-related diseases; (2) Methods: We isolated and purified γ-conglutin protein from narrow-leafed lupin (NLL or blue lupin) mature seeds using affinity-chromatography to evaluate its anti-inflammatory activities at molecular level using both, a bacterial lipopolysaccharide (LPS)-induced inflammation and an insulin resistance pancreatic cell models; (3) Results: NLL γ-conglutin achieved a plethora of functional effects as the strong reduction of cell oxidative stress induced by inflammation through decreasing proteins carbonylation, nitric oxide synthesis and inducible nitric oxide synthase (iNOS) transcriptional levels, and raising glutathione (GSH) levels and modulation of superoxide dismutase (SOD) and catalase enzymes activities. γ-conglutin induced up-regulated transcriptomic and protein levels of insulin signalling pathway IRS-1, Glut-4, and PI3K, improving glucose uptake, while decreasing pro-inflammatory mediators as iNOs, TNFα, IL-1β, INFγ, IL-6, IL-12, IL-17, and IL-27; (4) Conclusion: These results suggest a promising use of NLL γ-conglutin protein in functional foods, which could also be implemented in alternative diagnosis and therapeutic molecular tools helping to prevent and treat inflammatory-related diseases.
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Hanchang W, Khamchan A, Wongmanee N, Seedadee C. Hesperidin ameliorates pancreatic β-cell dysfunction and apoptosis in streptozotocin-induced diabetic rat model. Life Sci 2019; 235:116858. [DOI: 10.1016/j.lfs.2019.116858] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/29/2019] [Accepted: 09/07/2019] [Indexed: 12/12/2022]
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48
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Koroglu N, Temel Yuksel I, Aslan Cetin B, Nur Tola E, Fitnat Topbas N, Turhan U, Yetkin Yildirim G. Increased pancreatic-derived factor (PANDER) levels in gestational diabetes mellitus. Gynecol Endocrinol 2019; 35:866-868. [PMID: 30982368 DOI: 10.1080/09513590.2019.1599856] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The aim of the study was to investigate the pancreatic-derived factor (PANDER) levels in healthy pregnant women and in pregnant women with gestational diabetes mellitus (GDM). A total of 50 women consecutively diagnosed with GDM and 30 randomly selected age-matched and gestational-age-matched healthy pregnant women were included in this cross-sectional study. Serum PANDER levels and other variables were analyzed. The age, the gestational age at the time, the blood sample was obtained and the hemoglobin A1c (HbA1c) levels of the GDM and control groups were similar. The body mass index (BMI), fasting blood glucose, insulin, homeostasis model assessment of insulin resistance (HOMA-IR), and serum PANDER levels were significantly higher in the GDM group than the control group. The optimal PANDER cutoff value was 227.2 ng/ml, and the ratios above this value were 100 and 86.6% for sensitivity and specificity, respectively (p=.0001). Serum PANDER levels were higher in women with GDM compared to the control group and were positively correlated with insulin, HOMA-IR, and HbA1c levels. These results suggest that PANDER might be considered a new biomarker for GDM.
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Affiliation(s)
- Nadiye Koroglu
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Ilkbal Temel Yuksel
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Berna Aslan Cetin
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Esra Nur Tola
- Department of Obstetrics and Gynecology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Nura Fitnat Topbas
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Ugur Turhan
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Gonca Yetkin Yildirim
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
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Risk Factors for the Development of Psoriasis. Int J Mol Sci 2019; 20:ijms20184347. [PMID: 31491865 PMCID: PMC6769762 DOI: 10.3390/ijms20184347] [Citation(s) in RCA: 268] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/30/2019] [Accepted: 09/03/2019] [Indexed: 12/12/2022] Open
Abstract
Psoriasis is an immune-mediated genetic skin disease. The underlying pathomechanisms involve complex interaction between the innate and adaptive immune system. T cells interact with dendritic cells, macrophages, and keratinocytes, which can be mediated by their secreted cytokines. In the past decade, biologics targeting tumor necrosis factor-α, interleukin (IL)-23, and IL-17 have been developed and approved for the treatment of psoriasis. These biologics have dramatically changed the treatment and management of psoriasis. In contrast, various triggering factors can elicit the disease in genetically predisposed individuals. Recent studies suggest that the exacerbation of psoriasis can lead to systemic inflammation and cardiovascular comorbidity. In addition, psoriasis may be associated with other auto-inflammatory and auto-immune diseases. In this review, we summarize the risk factors, which can be divided into two groups (namely, extrinsic and intrinsic risk factors), responsible for the onset and exacerbation of psoriasis in order to facilitate its prevention.
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50
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Lee D, Choi P, Hwang BS, Kim T, Kim Y, Kim JC, Song JH, Park JS, Hwang GS, Yamabe N, Kang KS, Ham J. Protective effect of hypoxylonol C and 4,5,4',5'-tetrahydroxy-1,1'-binaphthyl isolated from Annulohypoxylon annulatum against streptozotocin-induced damage in INS-1 cells. Bioorg Chem 2019; 90:103053. [PMID: 31220671 DOI: 10.1016/j.bioorg.2019.103053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 12/20/2022]
Abstract
We evaluated the protective effects of hypoxylonol C and 4,5,4',5'-tetrahydroxy-1,1'-binaphthyl (BNT) isolated from Annulohypoxylon annulatum on pancreatic β-cell apoptosis, using the β-cell toxin streptozotocin (STZ). Hypoxylonol C and BNT restored the STZ-induced decrease in INS-1 cell viability in a dose-dependent manner. In addition, treatment of INS-1 cells with 50 μM STZ resulted in an increase in apoptotic cell death, which was observed as annexin V fluorescence intensity. Apoptotic cell death was decreased by co-treatment with 100 μM hypoxylonol C and 100 μM BNT. Similarly, STZ caused a marked increase in the expression of cleaved caspase-8, caspase-3, Bax, and poly (ADP-ribose) polymerase (PARP), as well as a decrease in the expression of B-cell lymphoma 2 (Bcl-2), which was reversed by co-treatment with 100 μM hypoxylonol C and 100 μM BNT. These findings suggest that hypoxylonol C and BNT play an important role in protecting pancreatic β-cells against apoptotic damage.
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Affiliation(s)
- Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pilju Choi
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea
| | - Buyng Su Hwang
- Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea
| | - Taejung Kim
- Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea
| | - Youngseok Kim
- Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea
| | - Jin-Chul Kim
- Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea
| | - Ji Hoon Song
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Jung Sik Park
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Gwi Seo Hwang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Noriko Yamabe
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea.
| | - Jungyeob Ham
- Natural Products Research Institute, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea.
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