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Campolo A, Maria Z, Lacombe VA. Diabetes Causes Significant Alterations in Pulmonary Glucose Transporter Expression. Metabolites 2024; 14:267. [PMID: 38786744 PMCID: PMC11123172 DOI: 10.3390/metabo14050267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/26/2024] [Accepted: 04/30/2024] [Indexed: 05/25/2024] Open
Abstract
Diabetes has been identified as a significant and independent risk factor for the development or increased severity of respiratory infections. However, the role of glucose transport in the healthy and diseased lung has received little attention. Specifically, the protein expression of the predominant glucose transporter (GLUT) isoforms in the adult lung remains largely to be characterized in both healthy and diabetic states. Type 1 diabetes was induced via streptozotocin and rescued via subcutaneous semi-osmotic insulin pump for 8 weeks. The gene and/or protein expression of the most predominant GLUT isoforms from Classes I and III, including the major insulin-sensitive isoform (i.e., GLUT4) and novel isoforms (i.e., GLUT-8 and GLUT-12), was quantified in the lung of healthy and diabetic mice via qRT-PCR and/or Western blotting. Pulmonary cell surface GLUT protein was measured using a biotinylated photolabeling assay, as a means to evaluate GLUT trafficking. Diabetic mice demonstrated significant alterations of total pulmonary GLUT protein expression, which were isoform- and location-dependent. Long-term insulin treatment rescued the majority of GLUT protein expression alterations in the lung during diabetes, as well as GLUT-4 and -8 trafficking to the pulmonary cell surface. These alterations in glucose homeostasis during diabetes may contribute to an increased severity of pulmonary infection during diabetes and may point to novel metabolic therapeutic strategies for diabetic patients with concurrent respiratory infections.
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Affiliation(s)
| | | | - Véronique A. Lacombe
- Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA; (A.C.); (Z.M.)
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2
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Kha S, Chaiyadet S, Saichua P, Tangkawatana S, Sripa B, Suttiprapa S. Opisthorchis viverrini excretory-secretory products suppress GLUT8 of cholangiocytes. Parasitol Res 2024; 123:161. [PMID: 38491300 DOI: 10.1007/s00436-024-08184-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/08/2024] [Indexed: 03/18/2024]
Abstract
Opisthorchis viverrini infection and the subsequent bile duct cancer it induces remains a significant public health problem in Southeast Asia. Opisthorchiasis has been reported to cause reduced plasma glucose levels among infected patients. The underlying mechanism for this phenomenon is unclear. In the present study, evidence is presented to support the hypothesis that O. viverrini exploits host cholangiocyte glucose transporters (GLUTs) in a similar manner to that of rodent intestinal nematodes, to feed on unabsorbed glucose in the bile for survival. GLUT levels in a cholangiocyte H69 cell line co-cultured with excretory-secretory products of O. viverrini were examined using qPCR and immunoblotting. GLUT 8 mRNA and expressed proteins were found to be downregulated in H69 cells in the presence of O. viverrini. This suggests that O. viverrini alters glucose metabolism in cells within its vicinity by limiting transporter expression resulting in increased bile glucose that it can utilize and potentially explains the previously reported anti-insulin effect of opisthorchiasis.
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Affiliation(s)
- Sandy Kha
- Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Graduate School, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sujittra Chaiyadet
- Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Tropical Disease Research Center, WHO Collaborating Centre for Research and Control of Opisthorchiasis, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Prasert Saichua
- Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Tropical Disease Research Center, WHO Collaborating Centre for Research and Control of Opisthorchiasis, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sirikachorn Tangkawatana
- Tropical Disease Research Center, WHO Collaborating Centre for Research and Control of Opisthorchiasis, Khon Kaen University, Khon Kaen, 40002, Thailand
- Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Banchob Sripa
- Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Tropical Disease Research Center, WHO Collaborating Centre for Research and Control of Opisthorchiasis, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sutas Suttiprapa
- Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
- Tropical Disease Research Center, WHO Collaborating Centre for Research and Control of Opisthorchiasis, Khon Kaen University, Khon Kaen, 40002, Thailand.
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3
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Jayathilake WMNK, de Laat MA, Furr M, Risco C, Lacombe VA. Prolonged hyperinsulinemia increases the production of inflammatory cytokines in equine digital lamellae but not in striated muscle. Vet J 2024; 303:106053. [PMID: 38043699 DOI: 10.1016/j.tvjl.2023.106053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
Hyperinsulinemia is the key feature of equine metabolic syndrome (EMS) which leads to debilitating sequelae. Hyperinsulinemia-associated laminitis (HAL) is one of the major sequelae of EMS, although the pathophysiological mechanisms are not well elucidated. Using an equine model, we hypothesized that expression of inflammatory markers would be increased in digital lamellae and striated muscle following prolonged hyperinsulinemia. Healthy Standardbred horses (5.4 ± 1.9 years) were alternately assigned to a prolonged euglycemic-hyperinsulinemic clamp (pEHC) or control group (n = 4 per group). Following a 48 h pEHC or a 48 h infusion of a balanced electrolyte solution (controls), biopsies were collected from digital lamellar tissue, skeletal muscle and cardiac muscle were obtained. All hyperinsulinemic horses developed laminitis regardless of previous health status at enrollment. Protein expression was quantified via Western blotting. A significant (P < 0.05) upregulation of the protein expression of heat shock protein 90 (HSP90), alpha 2 macroglobulin (A2M) and fibrinogen (α, β isoforms), as well as inflammatory cytokines including interleukin-1β were detected in digital lamellae following prolonged hyperinsulinemia. In contrast, protein expression of cytokines and acute phase proteins in heart and skeletal muscle was unchanged following hyperinsulinemia. Upregulation of inflammatory cytokines and acute phase proteins in digital lamellae during prolonged hyperinsulinemia may reveal potential biomarkers and novel therapeutic targets for equine endocrinopathic laminitis. Further, the lack of increase of inflammatory proteins and acute phase proteins in striated muscle following prolonged hyperinsulinemia may highlight potential anti-inflammatory and cardioprotective mechanisms in these insulin-sensitive tissues.
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Affiliation(s)
- W M N K Jayathilake
- College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA
| | - M A de Laat
- School of Biology and Environmental Science, Queensland University of Technology, Queensland, 4001, Australia
| | - M Furr
- College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA
| | - C Risco
- College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA
| | - V A Lacombe
- College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA.
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4
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Álvarez-Almazán S, Solís-Domínguez LC, Duperou-Luna P, Fuerte-Gómez T, González-Andrade M, Aranda-Barradas ME, Palacios-Espinosa JF, Pérez-Villanueva J, Matadamas-Martínez F, Miranda-Castro SP, Mercado-Márquez C, Cortés-Benítez F. Anti-Diabetic Activity of Glycyrrhetinic Acid Derivatives FC-114 and FC-122: Scale-Up, In Silico, In Vitro, and In Vivo Studies. Int J Mol Sci 2023; 24:12812. [PMID: 37628991 PMCID: PMC10454726 DOI: 10.3390/ijms241612812] [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: 06/30/2023] [Revised: 08/07/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Type 2 diabetes (T2D) is one of the most common diseases and the 8th leading cause of death worldwide. Individuals with T2D are at risk for several health complications that reduce their life expectancy and quality of life. Although several drugs for treating T2D are currently available, many of them have reported side effects ranging from mild to severe. In this work, we present the synthesis in a gram-scale as well as the in silico and in vitro activity of two semisynthetic glycyrrhetinic acid (GA) derivatives (namely FC-114 and FC-122) against Protein Tyrosine Phosphatase 1B (PTP1B) and α-glucosidase enzymes. Furthermore, the in vitro cytotoxicity assay on Human Foreskin fibroblast and the in vivo acute oral toxicity was also conducted. The anti-diabetic activity was determined in streptozotocin-induced diabetic rats after oral administration with FC-114 or FC-122. Results showed that both GA derivatives have potent PTP1B inhibitory activity being FC-122, a dual PTP1B/α-glucosidase inhibitor that could increase insulin sensitivity and reduce intestinal glucose absorption. Molecular docking, molecular dynamics, and enzymatic kinetics studies revealed the inhibition mechanism of FC-122 against α-glucosidase. Both GA derivatives were safe and showed better anti-diabetic activity in vivo than the reference drug acarbose. Moreover, FC-114 improves insulin levels while decreasing LDL and total cholesterol levels without decreasing HDL cholesterol.
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Affiliation(s)
- Samuel Álvarez-Almazán
- Laboratory of Biotechnology, Unidad de Posgrado, Facultad de Estudios Superiores Cuautitlán Campus 1, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (S.Á.-A.); (L.C.S.-D.); (T.F.-G.); (M.E.A.-B.); (S.P.M.-C.)
| | - Luz Cassandra Solís-Domínguez
- Laboratory of Biotechnology, Unidad de Posgrado, Facultad de Estudios Superiores Cuautitlán Campus 1, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (S.Á.-A.); (L.C.S.-D.); (T.F.-G.); (M.E.A.-B.); (S.P.M.-C.)
| | - Paulina Duperou-Luna
- Laboratory of Synthesis and Isolation of Bioactive Substances, Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana–Xochimilco (UAM–X), Mexico City 04960, Mexico; (P.D.-L.); (J.F.P.-E.); (J.P.-V.); (F.M.-M.)
| | - Teresa Fuerte-Gómez
- Laboratory of Biotechnology, Unidad de Posgrado, Facultad de Estudios Superiores Cuautitlán Campus 1, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (S.Á.-A.); (L.C.S.-D.); (T.F.-G.); (M.E.A.-B.); (S.P.M.-C.)
| | - Martin González-Andrade
- Laboratory of Biosensors and Molecular Modelling, Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - María E. Aranda-Barradas
- Laboratory of Biotechnology, Unidad de Posgrado, Facultad de Estudios Superiores Cuautitlán Campus 1, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (S.Á.-A.); (L.C.S.-D.); (T.F.-G.); (M.E.A.-B.); (S.P.M.-C.)
| | - Juan Francisco Palacios-Espinosa
- Laboratory of Synthesis and Isolation of Bioactive Substances, Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana–Xochimilco (UAM–X), Mexico City 04960, Mexico; (P.D.-L.); (J.F.P.-E.); (J.P.-V.); (F.M.-M.)
| | - Jaime Pérez-Villanueva
- Laboratory of Synthesis and Isolation of Bioactive Substances, Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana–Xochimilco (UAM–X), Mexico City 04960, Mexico; (P.D.-L.); (J.F.P.-E.); (J.P.-V.); (F.M.-M.)
| | - Félix Matadamas-Martínez
- Laboratory of Synthesis and Isolation of Bioactive Substances, Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana–Xochimilco (UAM–X), Mexico City 04960, Mexico; (P.D.-L.); (J.F.P.-E.); (J.P.-V.); (F.M.-M.)
| | - Susana Patricia Miranda-Castro
- Laboratory of Biotechnology, Unidad de Posgrado, Facultad de Estudios Superiores Cuautitlán Campus 1, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (S.Á.-A.); (L.C.S.-D.); (T.F.-G.); (M.E.A.-B.); (S.P.M.-C.)
| | - Crisóforo Mercado-Márquez
- Isolation and Animal Facility Unit, Facultad de Estudios Superiores Cuautitlán 28, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54714, Mexico;
| | - Francisco Cortés-Benítez
- Laboratory of Synthesis and Isolation of Bioactive Substances, Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana–Xochimilco (UAM–X), Mexico City 04960, Mexico; (P.D.-L.); (J.F.P.-E.); (J.P.-V.); (F.M.-M.)
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5
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Zhang Y, Gao F, Gong H, Fu Y, Liu B, Qin X, Zheng Q. Intermittent fasting attenuates obesity-related atrial fibrillation via SIRT3-mediated insulin resistance mitigation. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166638. [PMID: 36657499 DOI: 10.1016/j.bbadis.2023.166638] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 12/21/2022] [Accepted: 01/04/2023] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Atrial fibrillation (AF) is the most common tachyarrhythmia in urgent need of therapeutic optimization. Obesity engenders AF, and its pathogenesis is closely intertwined with insulin resistance (IR), but mechanism-based management is still underinvestigated. Intermittent fasting (IF) is a novel lifestyle intervention that mitigates IR, a potential AF driver, yet whether IF can prevent obesity-related AF remains elusive. Here, we aimed to evaluate the impacts of short-term IF on AF and to uncover the underlying mechanism. METHODS We subjected obese mice (high-fat diet for 8-week) to IF (alternative-day fasting for another 5-week) for AF vulnerability and substrate formation assessment, and similarly treated neonatal atrial cardiomyocytes (NRCMs) and fibroblasts (NRCFs) (palmitate, 200 μM) with IF (alternative-day short-term starvation for 8-day) for mechanism investigation. RESULTS Obese mice were prone to AF and atrial remodeling. IF reduced AF inducibility, duration, and reversed atrial remodeling including channel disturbance, left atrial dilation, cardiac hypertrophy and fibrosis in obese mice independent of weight loss. Mechanistically, IF up-regulated the SIRT3 protein level both in vivo and in vitro, and pharmacologic inhibition (3-(1H-1,2,3-Triazol-4-yl) pyridine, 50 μM) and genetic suppression of SIRT3 could attenuate the IF-mediated benefits against hypertrophy and fibrosis. Furthermore, IF activated AMPK and Akt signaling, two positive downstream targets of SIRT3, and inactivated HIF1α signaling, a negative downstream target of SIRT3 in both obese mice atria and palmitate-treated cells, while inhibition of SIRT3 reversed these effects. CONCLUSION IF prevents obesity-related AF via SIRT3-mediated IR mitigation, thus representing a feasible lifestyle intervention to improve AF management.
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Affiliation(s)
- Yudi Zhang
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Feng Gao
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Haoyu Gong
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Yuping Fu
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Binghua Liu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xinghua Qin
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
| | - Qiangsun Zheng
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
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6
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Carbó R, Rodríguez E. Relevance of Sugar Transport across the Cell Membrane. Int J Mol Sci 2023; 24:ijms24076085. [PMID: 37047055 PMCID: PMC10094530 DOI: 10.3390/ijms24076085] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Sugar transport through the plasma membrane is one of the most critical events in the cellular transport of nutrients; for example, glucose has a central role in cellular metabolism and homeostasis. The way sugars enter the cell involves complex systems. Diverse protein systems participate in the membrane traffic of the sugars from the extracellular side to the cytoplasmic side. This diversity makes the phenomenon highly regulated and modulated to satisfy the different needs of each cell line. The beautiful thing about this process is how evolutionary processes have diversified a single function: to move glucose into the cell. The deregulation of these entrance systems causes some diseases. Hence, it is necessary to study them and search for a way to correct the alterations and utilize these mechanisms to promote health. This review will highlight the various mechanisms for importing the valuable sugars needed to create cellular homeostasis and survival in all kinds of cells.
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Affiliation(s)
- Roxana Carbó
- Cardiovascular Biomedicine Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano #1, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
- Correspondence: ; Tel.: +52-55557-32911 (ext. 25704)
| | - Emma Rodríguez
- Cardiology Laboratory at Translational Research Unit UNAM-INC, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano #1, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico;
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Guo S, Huang Y, Liu X, Ma J, Zhu W. Association of type 1 diabetes mellitus and risk of atrial fibrillation: Systematic review and meta-analysis. Diabetes Res Clin Pract 2023; 199:110629. [PMID: 36948422 DOI: 10.1016/j.diabres.2023.110629] [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: 04/06/2022] [Revised: 09/01/2022] [Accepted: 03/14/2023] [Indexed: 03/24/2023]
Abstract
AIM Whether type 1 diabetes mellitus (T1DM) could be regarded as an independent risk factor for atrial fibrillation (AF) risk remains unclear, and thus we aimed to elaborate on this association in our meta-analysis. METHODS We systematically searched the Pubmed, Embase, Cochrane Library and Web of Science databases up to August 2022 for studies that were related to T1DM and AF incidence. Hazard ratios (HRs) and 95% confidence intervals (CIs) from each study were pooled via a random-effects model. RESULTS A total of four cohort studies were involved in our meta-analysis. Our pooled results suggested that T1DM patients had a higher AF risk (HR = 1.30, 95%CI 1.15-1.47) than the control group. In the subgroup analysis, a higher AF incidence was also found in female T1DM patients (HR = 1.50, 95%CI 1.26-1.79) than that in male patients. Compared with T1DM patients over 65 years, those with < 65 years showed an increased risk of AF (HR = 1.45, 95%CI 1.21-1.74). CONCLUSIONS Our meta-analysis demonstrated that T1DM was an independent risk factor for AF development, but further studies should be performed to provide more convincing evidence.
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Affiliation(s)
- Siyu Guo
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Yuwen Huang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Xiao Liu
- Department of Cardiology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510030, PR China
| | - Jianyong Ma
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Wengen Zhu
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China.
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8
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Temre MK, Kumar A, Singh SM. An appraisal of the current status of inhibition of glucose transporters as an emerging antineoplastic approach: Promising potential of new pan-GLUT inhibitors. Front Pharmacol 2022; 13:1035510. [PMID: 36386187 PMCID: PMC9663470 DOI: 10.3389/fphar.2022.1035510] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/18/2022] [Indexed: 07/23/2023] Open
Abstract
Neoplastic cells displayed altered metabolism with accelerated glycolysis. Therefore, these cells need a mammoth supply of glucose for which they display an upregulated expression of various glucose transporters (GLUT). Thus, novel antineoplastic strategies focus on inhibiting GLUT to intersect the glycolytic lifeline of cancer cells. This review focuses on the current status of various GLUT inhibition scenarios. The GLUT inhibitors belong to both natural and synthetic small inhibitory molecules category. As neoplastic cells express multiple GLUT isoforms, it is necessary to use pan-GLUT inhibitors. Nevertheless, it is also necessary that such pan-GLUT inhibitors exert their action at a low concentration so that normal healthy cells are left unharmed and minimal injury is caused to the other vital organs and systems of the body. Moreover, approaches are also emerging from combining GLUT inhibitors with other chemotherapeutic agents to potentiate the antineoplastic action. A new pan-GLUT inhibitor named glutor, a piperazine-one derivative, has shown a potent antineoplastic action owing to its inhibitory action exerted at nanomolar concentrations. The review discusses the merits and limitations of the existing GLUT inhibitory approach with possible future outcomes.
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Affiliation(s)
- Mithlesh Kumar Temre
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Ajay Kumar
- Deparment of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Sukh Mahendra Singh
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, India
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9
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Mengstie MA, Abebe EC, Teklemariam AB, Mulu AT, Teshome AA, Zewde EA, Muche ZT, Azezew MT. Molecular and cellular mechanisms in diabetic heart failure: Potential therapeutic targets. Front Endocrinol (Lausanne) 2022; 13:947294. [PMID: 36120460 PMCID: PMC9478122 DOI: 10.3389/fendo.2022.947294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/12/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetes Mellitus (DM) is a worldwide health issue that can lead to a variety of complications. DM is a serious metabolic disorder that causes long-term microvascular and macro-vascular complications, as well as the failure of various organ systems. Diabetes-related cardiovascular diseases (CVD) including heart failure cause significant morbidity and mortality worldwide. Concurrent hypertensive heart disease and/or coronary artery disease have been thought to be the causes of diabetic heart failure in DM patients. However, heart failure is extremely common in DM patients even in the absence of other risk factors such as coronary artery disease and hypertension. The occurrence of diabetes-induced heart failure has recently received a lot of attention. Understanding how diabetes increases the risk of heart failure and how it mediates major cellular and molecular alteration will aid in the development of therapeutics to prevent these changes. Hence, this review aimed to summarize the current knowledge and most recent findings in cellular and molecular mechanisms of diabetes-induced heart failure.
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Affiliation(s)
- Misganaw Asmamaw Mengstie
- Department of Biochemistry, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Endeshaw Chekol Abebe
- Department of Biochemistry, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Awgichew Behaile Teklemariam
- Department of Biochemistry, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Anemut Tilahun Mulu
- Department of Biochemistry, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Assefa Agegnehu Teshome
- Department of Anatomy, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Edgeit Abebe Zewde
- Department of Physiology, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Zelalem Tilahun Muche
- Department of Physiology, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
| | - Muluken Teshome Azezew
- Department of Physiology, College of Medicine and Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia
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Koutsifeli P, Varma U, Daniels LJ, Annandale M, Li X, Neale JPH, Hayes S, Weeks KL, James S, Delbridge LMD, Mellor KM. Glycogen-autophagy: Molecular machinery and cellular mechanisms of glycophagy. J Biol Chem 2022; 298:102093. [PMID: 35654138 PMCID: PMC9249846 DOI: 10.1016/j.jbc.2022.102093] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/21/2022] [Accepted: 05/16/2022] [Indexed: 01/18/2023] Open
Abstract
Autophagy is an essential cellular process involving degradation of superfluous or defective macromolecules and organelles as a form of homeostatic recycling. Initially proposed to be a “bulk” degradation pathway, a more nuanced appreciation of selective autophagy pathways has developed in the literature in recent years. As a glycogen-selective autophagy process, “glycophagy” is emerging as a key metabolic route of transport and delivery of glycolytic fuel substrate. Study of glycophagy is at an early stage. Enhanced understanding of this major noncanonical pathway of glycogen flux will provide important opportunities for new insights into cellular energy metabolism. In addition, glycogen metabolic mishandling is centrally involved in the pathophysiology of several metabolic diseases in a wide range of tissues, including the liver, skeletal muscle, cardiac muscle, and brain. Thus, advances in this exciting new field are of broad multidisciplinary interest relevant to many cell types and metabolic states. Here, we review the current evidence of glycophagy involvement in homeostatic cellular metabolic processes and of molecular mediators participating in glycophagy flux. We integrate information from a variety of settings including cell lines, primary cell culture systems, ex vivo tissue preparations, genetic disease models, and clinical glycogen disease states.
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Affiliation(s)
- Parisa Koutsifeli
- Department of Physiology, University of Auckland, Auckland, New Zealand; Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia
| | - Upasna Varma
- Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia
| | - Lorna J Daniels
- Department of Physiology, University of Auckland, Auckland, New Zealand; Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Marco Annandale
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Xun Li
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Joshua P H Neale
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Sarah Hayes
- Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia
| | - Kate L Weeks
- Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia; Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Australia; Department of Diabetes, Monash University, Melbourne, Australia
| | - Samuel James
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Lea M D Delbridge
- Department of Physiology, University of Auckland, Auckland, New Zealand; Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia.
| | - Kimberley M Mellor
- Department of Physiology, University of Auckland, Auckland, New Zealand; Department of Anatomy & Physiology, University of Melbourne, Melbourne, Australia; Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.
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11
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Understanding the Mechanism Underlie the Antidiabetic Activity of Oleuropein Using Ex-Vivo Approach. Rep Biochem Mol Biol 2022; 11:146-156. [PMID: 35765534 PMCID: PMC9208562 DOI: 10.52547/rbmb.11.1.146] [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: 12/22/2021] [Accepted: 12/25/2021] [Indexed: 01/11/2023]
Abstract
Background Oleuropein, the main constituent of olive fruit and leaves, has been reported to protect against insulin resistance and diabetes. While many experimental investigations have examined the mechanisms by which oleuropein improves insulin resistance and diabetes, much of these investigations have been carried out in either muscle cell lines or in vivo models two scenarios with many drawbacks. Accordingly, to simplify identification of mechanisms by which oleuropein regulates specific cellular processes, we resort, in the present study, to isolated muscle preparation which enables better metabolic milieu control and permit more detailed analyses. Methods For this purpose, soleus muscles were incubated for 12 h without or with palmitate (1.5 mM) in the presence or absence of oleuropein (1.5 mM), and compound C. Insulin-stimulated glucose transport, glucose transporter type 4 (GLUT4) translocation, Akt substrate of 160 kDa (AS160) phosphorylation and adenosine monophosphate-activated protein kinase (AMPK) phosphorylation were examined. Results Palmitate treatment reduced insulin-stimulated glucose transport, GLUT4 translocation and AS160 phosphorylation, but AMPK phosphorylation was not changed. Oleuropein administration (12 h) fully rescued insulin-stimulated glucose transport, but partially restored GLUT4 translocation. However, it fully restored AS160 phosphorylation, raising the possibility that oleuropein may also have contributed to the restoration of glucose transport by increased GLUT4 intrinsic activity. Inhibition of AMPK phosphorylation with compound C (50 µM) prevented oleuropein -induced improvements in insulin-stimulated glucose transport, GLUT4 translocation, and AS160 phosphorylation. Conclusion Our results clearly indicate that oleuropein alleviates palmitate-induced insulin resistance appears to occur via an AMPK-dependent mechanism involving improvements in the functionality of the AS160-GLUT4 signaling system.
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12
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Jankauskas SS, Kansakar U, Varzideh F, Wilson S, Mone P, Lombardi A, Gambardella J, Santulli G. Heart failure in diabetes. Metabolism 2021; 125:154910. [PMID: 34627874 PMCID: PMC8941799 DOI: 10.1016/j.metabol.2021.154910] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 12/16/2022]
Abstract
Heart failure and cardiovascular disorders represent the leading cause of death in diabetic patients. Here we present a systematic review of the main mechanisms underlying the development of diabetic cardiomyopathy. We also provide an excursus on the relative contribution of cardiomyocytes, fibroblasts, endothelial and smooth muscle cells to the pathophysiology of heart failure in diabetes. After having described the preclinical tools currently available to dissect the mechanisms of this complex disease, we conclude with a section on the most recent updates of the literature on clinical management.
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Affiliation(s)
- Stanislovas S Jankauskas
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA; Department of Molecular Pharmacology, Einstein Institute for Neuroimmunology and Inflammation, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Urna Kansakar
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA; Department of Molecular Pharmacology, Einstein Institute for Neuroimmunology and Inflammation, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Fahimeh Varzideh
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA; Department of Molecular Pharmacology, Einstein Institute for Neuroimmunology and Inflammation, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Scott Wilson
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Pasquale Mone
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Angela Lombardi
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Jessica Gambardella
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA; Department of Molecular Pharmacology, Einstein Institute for Neuroimmunology and Inflammation, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, New York, NY 10461, USA; International Translational Research and Medical Education (ITME), Department of Advanced Biomedical Science, "Federico II" University, 80131 Naples, Italy
| | - Gaetano Santulli
- Department of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA; Department of Molecular Pharmacology, Einstein Institute for Neuroimmunology and Inflammation, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, New York, NY 10461, USA; International Translational Research and Medical Education (ITME), Department of Advanced Biomedical Science, "Federico II" University, 80131 Naples, Italy.
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13
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Nickl B, Qadri F, Bader M. Anti-inflammatory role of Gpnmb in adipose tissue of mice. Sci Rep 2021; 11:19614. [PMID: 34608215 PMCID: PMC8490452 DOI: 10.1038/s41598-021-99090-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 09/20/2021] [Indexed: 12/31/2022] Open
Abstract
Obesity can cause a chronic, low-grade inflammation, which is a critical step in the development of type II diabetes and cardiovascular diseases. Inflammation is associated with the expression of glycoprotein nonmetastatic melanoma protein b (Gpnmb), which is mainly expressed by macrophages and dendritic cells. We generated a Gpnmb-knockout mouse line using Crispr-Cas9 to assess the role of Gpnmb in a diet-induced obesity. The absence of Gpnmb did not affect body weight gain and blood lipid parameters. While wildtype animals became obese but remained otherwise metabolically healthy, Gpnmb-knockout animals developed, in addition to obesity, symptoms of metabolic syndrome such as adipose tissue inflammation, insulin resistance and liver fibrosis. We observed a strong Gpnmb expression in adipose tissue macrophages in wildtype animals and a decreased expression of most macrophage-related genes independent of their inflammatory function. This was corroborated by in vitro data showing that Gpnmb was mostly expressed by reparative macrophages while only pro-inflammatory stimuli induced shedding of Gpnmb. The data suggest that Gpnmb is ameliorating adipose tissue inflammation independent of the polarization of macrophages. Taken together, the data suggest an immune-balancing function of Gpnmb that could delay the metabolic damage caused by the induction of obesity.
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Affiliation(s)
- Bernadette Nickl
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Str. 10, 13125, Berlin, Germany.,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, 10178, Berlin, Germany
| | - Fatimunnisa Qadri
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Michael Bader
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Str. 10, 13125, Berlin, Germany. .,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, 10178, Berlin, Germany. .,German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany. .,Charité University Medicine, 10117, Berlin, Germany. .,Institute for Biology, University of Lübeck, 23538, Lübeck, Germany.
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14
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Gu J, Geng M, Qi M, Wang L, Zhang Y, Gao J. The role of lysosomal membrane proteins in glucose and lipid metabolism. FASEB J 2021; 35:e21848. [PMID: 34582051 DOI: 10.1096/fj.202002602r] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 07/11/2021] [Accepted: 07/26/2021] [Indexed: 11/11/2022]
Abstract
Lysosomes have long been regarded as the "garbage dump" of the cell. More recently, however, researchers have revealed novel roles for lysosomal membranes in autophagy, ion transport, nutrition sensing, and membrane fusion and repair. With active research into lysosomal membrane proteins (LMP), increasing evidence has become available showing that LMPs are inextricably linked to glucose and lipid metabolism, and this relationship represents mutual influence and regulation. In this review, we summarize the roles of LMPs in relation to glucose and lipid metabolism, and describe their roles in glucose transport, glycolysis, cholesterol transport, and lipophagy. The role of transport proteins can be traced back to the original discoveries of GLUT8, NPC1, and NPC2, which were all found to have significant roles in the pathways involved in glucose and lipid metabolism. CLC-5 and SIDT2-knockout animals show serious phenotypic disorders of metabolism, and V-ATPase and LAMP-2 have been found to interact with proteins related to glucose and lipid metabolism. These findings all emphasize the critical role of LMPs in glycolipid metabolism and help to strengthen our understanding of the independent and close relationship between LMPs and glycolipid metabolism.
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Affiliation(s)
- Jing Gu
- Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
| | - Mengya Geng
- Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
- School of Clinical Medicine, Wannan Medical College, Wuhu, China
| | - Mengxiang Qi
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
- School of Clinical Medicine, Wannan Medical College, Wuhu, China
| | - Lizhuo Wang
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Yao Zhang
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Jialin Gao
- Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Genetic Metabolism, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
- Anhui Province Key Laboratory of Biological Macro-Molecules Research (Wannan Medical College), Wannan Medical College, Wuhu, China
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15
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Stanirowski PJ, Szukiewicz D, Majewska A, Wątroba M, Pyzlak M, Bomba-Opoń D, Wielgoś M. Placental expression of glucose transporters GLUT-1, GLUT-3, GLUT-8 and GLUT-12 in pregnancies complicated by gestational and type 1 diabetes mellitus. J Diabetes Investig 2021; 13:560-570. [PMID: 34555239 PMCID: PMC8902395 DOI: 10.1111/jdi.13680] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/06/2021] [Accepted: 09/22/2021] [Indexed: 12/19/2022] Open
Abstract
Aims/Introduction The aim of the present study was to evaluate the placental expression of glucose transporters GLUT‐1, GLUT‐3, GLUT‐8 and GLUT‐12 in term pregnancies complicated by well‐controlled gestational (GDM) and type 1 pregestational diabetes mellitus (PGDM). Materials and Methods A total of 103 placental samples were obtained from patients diagnosed with GDM (n = 60), PGDM (n = 20) and a non‐diabetic control group (n = 23). Computer‐assisted quantitative morphometry of stained placental sections was performed to determine the expression of selected GLUT proteins. Results Immunohistochemical techniques used for the identification of GLUT‐1, GLUT‐3, GLUT‐8 and GLUT‐12 revealed the presence of all glucose transporters in the placental tissue. Morphometric evaluation performed for the vascular density‐matched placental samples demonstrated a significant increase in the expression of GLUT‐1 protein in patients with PGDM as compared to GDM and control groups (P < 0.05). With regard to the expression of the other GLUT isoforms, no statistically significant differences were observed between patients from the diabetic and control populations. Positive correlations between fetal birthweight and the expression of GLUT‐1 protein in the PGDM group (rho = 0.463, P < 0.05) and GLUT‐12 in the control group (rho = 0.481, P < 0.05) were noted. Conclusions In term pregnancies complicated by well‐controlled GDM/PGDM, expression of transporters GLUT‐3, GLUT‐8 and GLUT‐12 in the placenta remains unaffected. Increased expression of GLUT‐1 among women with type 1 PGDM might contribute to a higher rate of macrosomic fetuses in this population.
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Affiliation(s)
- Paweł Jan Stanirowski
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Warsaw, Poland
| | - Dariusz Szukiewicz
- Department of Biophysics and Human Physiology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Agata Majewska
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Warsaw, Poland
| | - Mateusz Wątroba
- Department of Biophysics and Human Physiology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Michał Pyzlak
- Department of Biophysics and Human Physiology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Dorota Bomba-Opoń
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Warsaw, Poland
| | - Mirosław Wielgoś
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Warsaw, Poland
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16
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Abstract
Insulin receptors are highly expressed in the heart and vasculature. Insulin signaling regulates cardiac growth, survival, substrate uptake, utilization, and mitochondrial metabolism. Insulin signaling modulates the cardiac responses to physiological and pathological stressors. Altered insulin signaling in the heart may contribute to the pathophysiology of ventricular remodeling and heart failure progression. Myocardial insulin signaling adapts rapidly to changes in the systemic metabolic milieu. What may initially represent an adaptation to protect the heart from carbotoxicity may contribute to amplifying the risk of heart failure in obesity and diabetes. This review article presents the multiple roles of insulin signaling in cardiac physiology and pathology and discusses the potential therapeutic consequences of modulating myocardial insulin signaling.
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Affiliation(s)
- E Dale Abel
- Division of Endocrinology, Metabolism and Diabetes and Fraternal Order of Eagles Diabetes Research Center, Carver College of Medicine, University of Iowa, Iowa City, Iowa
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17
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Cellular mechanisms and recommended drug-based therapeutic options in diabetic cardiomyopathy. Pharmacol Ther 2021; 228:107920. [PMID: 34171330 DOI: 10.1016/j.pharmthera.2021.107920] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/26/2021] [Accepted: 06/03/2021] [Indexed: 12/18/2022]
Abstract
Diabetes mellitus (DM) is associated with a specific cardiac phenotype characterized by structural and functional alterations. This so-called diabetic cardiomyopathy (DM CM) is clinically relevant as patients with DM show high incidence of heart failure. Mechanistically, several parameters interact on the cardiomyocyte level leading to increased inflammation, apoptosis, reactive oxygen species and altered calcium signaling. This in turn provokes functional myocardial changes that might inter alia play into the worsened clinical outcome in DM patients. Therefore, efficient therapeutic options are urgently needed. This review focuses on mechanistic effects of currently recommended antidiabetic treatment and heart failure therapy for DM CM.
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18
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Mardones L, Muñoz K, Villagrán M. Cell-specific expression of functional glucose transporter 8 in mammary gland. Biochem Biophys Res Commun 2021; 567:125-130. [PMID: 34153681 DOI: 10.1016/j.bbrc.2021.06.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 06/08/2021] [Indexed: 01/13/2023]
Abstract
Differentiated mammary epithelial cells are responsible for milk synthesis during lactation, supporting early postnatal life in mammals. These cells are found in the terminal alveoli of a secretory epithelium, which is surrounded by myoepithelial cells and a stroma rich in fatty tissue. The aim of this study was to explore the cell-specific expression of the glucose transporter GLUT8 in mammary gland and evaluate its functionality for glucose transport, in order to confirm its role in lactose synthesis. Our histological results revealed that GLUT8 is expressed in adipocytes and the epithelial and myoepithelial cells in mammary gland, with a predominant intracellular granular pattern. Colocalization studies of endogenous and green fluorescent protein fused GLUT8 revealed their expressions in lysosome and Golgi, respectively, with Pearson's coefficient correlations of 0.82 ± 0.05 and 0.68 ± 0.16. Functional studies of dileucine to dialanine mutant of GLUT8 showed a fructose-sensitive 2-deoxy glucose uptake at a rate of 83.3 pmoles/(min∗106 cells), 7 folds over empty vector, with a 60 ± 4 and 72 ± 6% decline in 2-deoxy glucose in the presence of 20 and 50 mM fructose, respectively. We concluded that functional GLUT8 is expressed in mammary gland, localizing in mammary epithelial and myoepithelial cells, and adipocytes. In lactation, GLUT8 is expressed mainly in luminal epithelial cells, at the compartments of the endomembrane system. It is necessary to explore the physiological/pathological functions of GLUT8 in mammary gland, including its role in lactation.
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Affiliation(s)
- Lorena Mardones
- Biomedical Sciences Research Laboratory, Faculty of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile.
| | - Katia Muñoz
- Biomedical Sciences Research Laboratory, Faculty of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile.
| | - Marcelo Villagrán
- Biomedical Sciences Research Laboratory, Faculty of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile.
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19
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El-Daly SM, Medhat D, A El-Bana M, Abdel-Latif Y, El-Naggar ME, Omara EA, Morsy SM, Hussein J. Stimulatory effect of docosahexaenoic acid alone or loaded in zinc oxide or silver nanoparticles on the expression of glucose transport pathway. Prostaglandins Other Lipid Mediat 2021; 155:106566. [PMID: 34048868 DOI: 10.1016/j.prostaglandins.2021.106566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 04/28/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023]
Abstract
The role of glucose transporters (GLUTs) in diabetes mellitus has become more prominent as a possible therapeutic target. In the present study, we aimed to compare the effect of zinc oxide nanoparticles (ZnONPs), silver nanoparticles (AgNPs), and docosahexaenoic acid (DHA) alone or loaded in ZnONPs or AgNPs on insulin signaling pathway and GLUTs expression in diabetic rats. In the experimental part, rats were divided into seven groups; control, diabetic, and the other five groups were diabetic received different treatments. Fasting blood sugar (FBS), serum level of insulin, insulin resistance (IR), and serum level of phosphatidylinositol 3-kinase (PI3K) were evaluated. In addition, insulin expression in pancreatic islets was assessed by immunohistochemical analysis, and the expression of liver GLUTs 1, 2, and 4 and liver insulin receptor substrate-1 (IRS-1) was evaluated by real-time polymerase chain reactions (RT-PCR). The results of the current study showed that ZnONPs, AgNPs, and DHA alone or loaded in ZnONPs or AgNPs attenuated levels of FBS, insulin and decreased IR in diabetic rats through enhancing the expression of GLUTs as well as IRS-1 and PI3K. Furthermore, AgNPs loaded with DHA showed the most significance with high comparability to the control group. In conclusion, this study elucidated the role of GLUTs and IRS-1 in diabetes and introduced novel characteristics of ZnONPs, AgNPs, and DHA alone or loaded in ZnONPs or AgNPs as a therapeutic modality to activate GLUTs and IRS1, which may be beneficial for diabetic patients with IR.
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Affiliation(s)
- Sherien M El-Daly
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt; Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
| | - Dalia Medhat
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt.
| | - Mona A El-Bana
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Yasmin Abdel-Latif
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt; Faculty of Biotechnology, October University for Modern Sciences and Arts, 6th October, Giza, Egypt
| | - Mehrez E El-Naggar
- Textile Research Division, National Research Centre, 33 El Bohouth St., P.O. 12622, Dokki, Giza, Egypt
| | - Enayat A Omara
- Pathology Department, Medical Research Division, National Research Centre, Cairo, Egypt
| | - Safaa M Morsy
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Jihan Hussein
- Department of Medical Biochemistry, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt
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20
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Vrachatis DA, Papathanasiou KA, Kossyvakis C, Giotaki SG, Raisakis K, Iliodromitis KE, Reimers B, Stefanini GG, Cleman M, Sianos G, Lansky A, Deftereos SG, Giannopoulos G. Atrial fibrillation risk in patients suffering from type I diabetes mellitus. A review of clinical and experimental evidence. Diabetes Res Clin Pract 2021; 174:108724. [PMID: 33647332 DOI: 10.1016/j.diabres.2021.108724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/31/2021] [Accepted: 02/09/2021] [Indexed: 12/12/2022]
Abstract
Atrial fibrillation (AF) and diabetes mellitus (DM) are commonly encountered in clinical practice. Although, the long term macrovascular and microvascular sequela of DM are well validated, the association between the less prevalent type 1 DM (T1DM) and atrial arrhythmogenesis is poorly understood. In the present review we highlight the current experimental and clinical data addressing this complex interaction. Animal studies support that T1DM, characterized by insulin deficiency and glycemic variability, impairs phosphatidylinositol 3‑kinase (PI3K)/protein kinase B signaling pathway. This pathway holds a central role in atrial electrical and structural remodeling responsible for arrhythmia initiation and maintenance. The molecular ''footprint'' of T1DM in atrial myocytes seems to involve a state of increased oxidative stress, impaired glucose transportation, ionic channel dysregulation and eventually fibrosis. On the contrary only a few clinical studies have examined the role of T1DM as an independent risk factor for AF development, and are discussed here. Further research is needed to solidify the real magnitude of this association and to investigate the clinical implications of PI3K molecular signaling pathway in atrial fibrillation management.
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Affiliation(s)
- Dimitrios A Vrachatis
- Humanitas Clinical and Research Center IRCCS, Milan, Italy; National and Kapodistrian University of Athens, Athens, Greece
| | | | | | | | | | | | | | | | - Michael Cleman
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - George Sianos
- Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Alexandra Lansky
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
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21
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Kuspriyanti NP, Ariyanto EF, Syamsunarno MRAA. Role of Warburg Effect in Cardiovascular Diseases: A Potential Treatment Option. Open Cardiovasc Med J 2021. [DOI: 10.2174/1874192402115010006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background:
Under normal conditions, the heart obtains ATP through the oxidation of fatty acids, glucose, and ketones. While fatty acids are the main source of energy in the heart, under certain conditions, the main source of energy shifts to glucose where pyruvate converts into lactate, to meet the energy demand. The Warburg effect is the energy shift from oxidative phosphorylation to glycolysis in the presence of oxygen. This effect is observed in tumors as well as in diseases, including cardiovascular diseases. If glycolysis is more dominant than glucose oxidation, the two pathways uncouple, contributing to the severity of the heart condition. Recently, several studies have documented changes in metabolism in several cardiovascular diseases; however, the specific mechanisms remain unclear.
Methods:
This literature review was conducted by an electronic database of Pub Med, Google Scholar, and Scopus published until 2020. Relevant papers are selected based on inclusion and exclusion criteria.
Results:
A total of 162 potentially relevant articles after the title and abstract screening were screened for full-text. Finally, 135 papers were included for the review article.
Discussion:
This review discusses the effects of alterations in glucose metabolism, particularly the Warburg effect, on cardiovascular diseases, including heart failure, atrial fibrillation, and cardiac hypertrophy.
Conclusion:
Reversing the Warburg effect could become a potential treatment option for cardiovascular diseases.
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22
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Wang P, He C, Yue M, Wang T, Bai L, Wu Y, Liu D, Wang M, Sun Y, Li Y, Zhang S, Liu H. The AT1 receptor autoantibody causes hypoglycemia in fetal rats via promoting the STT3A-GLUT1-glucose uptake axis in liver. Mol Cell Endocrinol 2020; 518:111022. [PMID: 32871226 DOI: 10.1016/j.mce.2020.111022] [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: 04/01/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 10/23/2022]
Abstract
Blood glucose is of great importance to development and metabolic homeostasis in fetuses. Stimulation of harmful factors during gestation induces pathoglycemia. Angiotensin II type 1 receptor autoantibody (AT1-AA), a newly discovered gestational harmful factor, has been shown to induce intrauterine growth restriction in fetuses and glucose disorders in adults. However, whether and how AT1-AA influences the blood glucose level of fetuses during gestation is not yet clear. The purpose of the current study was to observe the fetal blood glucose level of AT1-AA-positive pregnant rats during late pregnancy and to determine the roles that hepatic glucose transporters play in this process. We established AT1-AA-positive pregnant rats by injecting AT1-AA into the caudal veins of rats in the 2nd trimester of gestation. Although the fetal blood glucose level in the 3rd trimester of gestation decreased, hepatic glucose uptake increased detected. Through separating membrane and cytosolic proteins, we demonstrated that both the expression and membrane transport ratio of glucose transporter 1 (GLUT1), which is responsible for glucose transport in fetal hepatocytes, were upregulated, accompanied by increased expression of N-glycosyltransferase STT3A, which contributes to the N-glycosylation of GLUT1. In vitro, we identified that AT1-AA increased glucose uptake, the expression and membrane transport ratio of GLUT1 and the expression of STT3A in HepG2 cell lines via separating membrane and cytosolic proteins and immunofluorescence, resulting in the decreased glucose content in the medium. The GLUT1 inhibitor WZB117 reversed the decreases in glucose content in the medium, the increases in glucose uptake, the increases in the expression and membrane transport ratio of GLUT1 caused by AT1-AA. The N-glycosyltransferase inhibitor NGI as well as si-STT3A reversed the AT1-AA-induced upregulation of the STT3A-GLUT1-glucose uptake effect. This study demonstrates that AT1-AA lowers the blood glucose level of fetuses via the STT3A-GLUT1-glucose uptake axis in liver.
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Affiliation(s)
- Pengli Wang
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Chunyu He
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Mingming Yue
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Tongtong Wang
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Lina Bai
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Ye Wu
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Dan Liu
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China; Yan Jing Medical College, Capital Medical University, Beijing, 101300, PR China
| | - Meili Wang
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Yan Sun
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China
| | - Yan Li
- Center for Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, PR China
| | - Suli Zhang
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China.
| | - Huirong Liu
- Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing, 100069, PR China; The Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing, 100029, PR China.
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23
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Wang T, Wang J, Hu X, Huang XJ, Chen GX. Current understanding of glucose transporter 4 expression and functional mechanisms. World J Biol Chem 2020; 11:76-98. [PMID: 33274014 PMCID: PMC7672939 DOI: 10.4331/wjbc.v11.i3.76] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/22/2020] [Accepted: 09/22/2020] [Indexed: 02/05/2023] Open
Abstract
Glucose is used aerobically and anaerobically to generate energy for cells. Glucose transporters (GLUTs) are transmembrane proteins that transport glucose across the cell membrane. Insulin promotes glucose utilization in part through promoting glucose entry into the skeletal and adipose tissues. This has been thought to be achieved through insulin-induced GLUT4 translocation from intracellular compartments to the cell membrane, which increases the overall rate of glucose flux into a cell. The insulin-induced GLUT4 translocation has been investigated extensively. Recently, significant progress has been made in our understanding of GLUT4 expression and translocation. Here, we summarized the methods and reagents used to determine the expression levels of Slc2a4 mRNA and GLUT4 protein, and GLUT4 translocation in the skeletal muscle, adipose tissues, heart and brain. Overall, a variety of methods such real-time polymerase chain reaction, immunohistochemistry, fluorescence microscopy, fusion proteins, stable cell line and transgenic animals have been used to answer particular questions related to GLUT4 system and insulin action. It seems that insulin-induced GLUT4 translocation can be observed in the heart and brain in addition to the skeletal muscle and adipocytes. Hormones other than insulin can induce GLUT4 translocation. Clearly, more studies of GLUT4 are warranted in the future to advance of our understanding of glucose homeostasis.
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Affiliation(s)
- Tiannan Wang
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
| | - Jing Wang
- College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, Hubei Province, China
| | - Xinge Hu
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
| | - Xian-Ju Huang
- College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, Hubei Province, China
| | - Guo-Xun Chen
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
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24
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Pujimulyani D, Yulianto WA, Setyowati A, Arumwardana S, Sari Widya Kusuma H, Adhani Sholihah I, Rizal R, Widowati W, Maruf A. Hypoglycemic Activity of Curcuma mangga Val. Extract via Modulation of GLUT4 and PPAR-γ mRNA Expression in 3T3-L1 Adipocytes. J Exp Pharmacol 2020; 12:363-369. [PMID: 33116951 PMCID: PMC7549494 DOI: 10.2147/jep.s267912] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/13/2020] [Indexed: 01/01/2023] Open
Abstract
Background There would be over 600 million people living with diabetes by 2040 as predicted by the World Health Organization. Diabetes is characterized by raised blood sugar and insulin resistance. Insulin regulates the influx of glucose into the cell by upregulating the glucose transporter type 4 (GLUT4) expression on the plasma membrane. Besides, PPAR-γ also controls the metabolism of glucose in adipose tissues. Curcuma mangga Val., denoted as C. mangga, is a native Indonesian medicinal plant that has many beneficial effects, including an antidiabetic potential. Purpose In this research, we aimed to disclose the hypoglycemic activity of ethanol extract of C. mangga (EECM) in 3T3-L1 fibroblasts-derived adipocyte cells in regulating glucose uptake as confirmed by the GLUT4 and PPAR-γ gene expression. Methods The uptake of glucose was determined using radioactive glucose, while the gene expression of GLUT4, PPAR-γ, and β-actin was quantified using mRNA segregation and real-time quantitative reverse transcription-polymerase chain reaction (RT-qPCR). Results We discovered that EECM interventions (200 and 50 μg/mL) increased glucose uptake in lipid-laden 3T3-L1 cells by 14.75 and 8.86 fold compared to the control non-insulin, respectively (p < 0.05). At the same doses, they also increased GLUT4 mRNA expression by 8.41 and 11.18 fold compared to the control non-insulin, respectively (p < 0.05). In contrast, EECM interventions (200 and 50 μg/mL) showed lower levels of PPAR-γ mRNA expression compared to the control metformin, indicating the anti-adipogenic potentials of EECM. Conclusion EECM showed hypoglycemic activity in lipid-laden 3T3-L1 cells by improving glucose ingestion into the cells, which was mediated by increased GLUT4 expression and downregulated PPAR-γ expression.
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Affiliation(s)
- Dwiyati Pujimulyani
- Faculty of Agroindustry, University of Mercu Buana Yogyakarta, Yogyakarta 55753, Indonesia
| | - Wisnu Adi Yulianto
- Faculty of Agroindustry, University of Mercu Buana Yogyakarta, Yogyakarta 55753, Indonesia
| | - Astuti Setyowati
- Faculty of Agroindustry, University of Mercu Buana Yogyakarta, Yogyakarta 55753, Indonesia
| | - Seila Arumwardana
- Biomolecular and Biomedical Research Center, Aretha Medika Utama, Bandung 40163, Indonesia
| | | | - Ika Adhani Sholihah
- Biomolecular and Biomedical Research Center, Aretha Medika Utama, Bandung 40163, Indonesia
| | - Rizal Rizal
- Biomolecular and Biomedical Research Center, Aretha Medika Utama, Bandung 40163, Indonesia.,Biomedical Engineering Study Program, Department of Electrical Engineering, Faculty of Engineering, University of Indonesia, Jakarta 16424, Indonesia
| | - Wahyu Widowati
- Medical Research Center, Faculty of Medicine, Maranatha Christian University, Bandung 40164, Indonesia
| | - Ali Maruf
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College, Faculty of Medicine, Chongqing University, Chongqing 400030, People's Republic of China
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25
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Nirengi S, Peres Valgas da Silva C, Stanford KI. Disruption of energy utilization in diabetic cardiomyopathy; a mini review. Curr Opin Pharmacol 2020; 54:82-90. [PMID: 32980777 DOI: 10.1016/j.coph.2020.08.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 02/08/2023]
Abstract
Type 2 diabetes (T2D) substantially elevates the risk for heart failure, a major cause of death. In advanced T2D, energy metabolism in the heart is disrupted; glucose metabolism is decreased, fatty acid (FA) metabolism is enhanced to maintain ATP production, and cardiac function is impaired. This condition is termed diabetic cardiomyopathy (DCM). The exact cause of DCM is still unknown although altered metabolism is an important component. While type 2 diabetes is characterized by insulin resistance, the traditional antidiabetic agents that improve insulin stimulation or sensitivity only partially improve DCM-induced cardiac dysfunction. Recently, sodium-glucose transporter-2 (SGLT2) inhibitors have been identified as potential pharmacological agents to treat DCM. This review highlights the molecular mechanisms underlying cardiac energy metabolism in DCM, and the potential effects of SGLT2 inhibitors.
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Affiliation(s)
- Shinsuke Nirengi
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Carmem Peres Valgas da Silva
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Kristin I Stanford
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
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26
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Bertrand L, Auquier J, Renguet E, Angé M, Cumps J, Horman S, Beauloye C. Glucose transporters in cardiovascular system in health and disease. Pflugers Arch 2020; 472:1385-1399. [PMID: 32809061 DOI: 10.1007/s00424-020-02444-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/28/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022]
Abstract
Glucose transporters are essential for the heart to sustain its function. Due to its nature as a high energy-consuming organ, the heart needs to catabolize a huge quantity of metabolic substrates. For optimized energy production, the healthy heart constantly switches between various metabolites in accordance with substrate availability and hormonal status. This metabolic flexibility is essential for the maintenance of cardiac function. Glucose is part of the main substrates catabolized by the heart and its use is fine-tuned via complex molecular mechanisms that include the regulation of the glucose transporters GLUTs, mainly GLUT4 and GLUT1. Besides GLUTs, glucose can also be transported by cotransporters of the sodium-glucose cotransporter (SGLT) (SLC5 gene) family, in which SGLT1 and SMIT1 were shown to be expressed in the heart. This SGLT-mediated uptake does not seem to be directly linked to energy production but is rather associated with intracellular signalling triggering important processes such as the production of reactive oxygen species. Glucose transport is markedly affected in cardiac diseases such as cardiac hypertrophy, diabetic cardiomyopathy and heart failure. These alterations are not only fingerprints of these diseases but are involved in their onset and progression. The present review will depict the importance of glucose transport in healthy and diseased heart, as well as proposed therapies targeting glucose transporters.
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Affiliation(s)
- Luc Bertrand
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium.
| | - Julien Auquier
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium
| | - Edith Renguet
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium
| | - Marine Angé
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium
| | - Julien Cumps
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium
| | - Sandrine Horman
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium
| | - Christophe Beauloye
- Institut de Recherche Expérimentale et Clinique, Pole of Cardiovascular Research, Université catholique de Louvain, Avenue Hippocrate 55, B1.55.05, B-1200, Brussels, Belgium.,Division of Cardiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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27
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Maria Z, Campolo AR, Scherlag BJ, Ritchey JW, Lacombe VA. Insulin Treatment Reduces Susceptibility to Atrial Fibrillation in Type 1 Diabetic Mice. Front Cardiovasc Med 2020; 7:134. [PMID: 32903422 PMCID: PMC7434932 DOI: 10.3389/fcvm.2020.00134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 06/30/2020] [Indexed: 12/19/2022] Open
Abstract
Diabetes has been identified as an independent risk factor for atrial fibrillation (AF), the most common chronic cardiac arrhythmia. Whether or not glucose and insulin disturbances observed during diabetes enhance arrhythmogenicity of the atria, potentially leading to AF, is not well-known. We hypothesized that insulin deficiency and impaired glucose transport provide a metabolic substrate for the development and maintenance of AF during diabetes. Transesophageal atrial pacing was used to induce AF in healthy, streptozotocin-induced insulin-deficient type 1 diabetic, and insulin-treated diabetic mice. Translocation of insulin-sensitive glucose transporters (GLUTs) to the atrial cell surface was measured using a biotinylated photolabeling assay in the perfused heart. Fibrosis and glycogen accumulation in the atrium were measured using histological analysis. Diabetic mice displayed mild hyperglycemia, increased duration and frequency of AF episodes vs. age-matched controls (e.g., AF duration: 19.7 ± 6.8 s vs. 1.8 ± 1.1 s, respectively, p = 0.032), whereas insulin-treated diabetic animals did not. The translocation of insulin-sensitive GLUT-4 and -8 to the atrial cell surface was significantly downregulated in the diabetic mice (by 67 and 79%, respectively; p ≤ 0.001), and rescued by insulin treatment. We did not observe fibrosis or glycogen accumulation in the atria of diabetic mice. Therefore, these data suggest that insulin and glucose disturbances were sufficient to induce AF susceptibility during mild diabetes.
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Affiliation(s)
- Zahra Maria
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Allison R Campolo
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Benjamin J Scherlag
- Department of Internal Medicine, University of Oklahoma College of Medicine, Oklahoma City, OK, United States
| | - Jerry W Ritchey
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, OK, United States
| | - Véronique A Lacombe
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
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28
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Sarikhani M, Garbern JC, Ma S, Sereda R, Conde J, Krähenbühl G, Escalante GO, Ahmed A, Buenrostro JD, Lee RT. Sustained Activation of AMPK Enhances Differentiation of Human iPSC-Derived Cardiomyocytes via Sirtuin Activation. Stem Cell Reports 2020; 15:498-514. [PMID: 32649901 PMCID: PMC7419706 DOI: 10.1016/j.stemcr.2020.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 12/18/2022] Open
Abstract
Recent studies suggest that metabolic regulation may improve differentiation of cardiomyocytes derived from induced pluripotent stem cells (iPSCs). AMP-activated protein kinase (AMPK) is a master regulator of metabolic activities. We investigated whether AMPK participates in iPSC-derived cardiomyocyte differentiation. We observed that AMPK phosphorylation at Thr172 increased at day 9 but then decreased after day 11 of differentiation to cardiomyocytes. Inhibition of AMPK with compound C significantly reduced mRNA and protein expression of cardiac troponins TNNT2 and TNNI3. Moreover, sustained AMPK activation using AICAR from days 9 to 14 of differentiation increased mRNA and protein expression of both TNNT2 and TNNI3. AICAR decreased acetylation of histone 3 at Lys9 and 56 and histone 4 at Lys16 (known target sites for nuclear-localized sirtuins [SIRT1, SIRT6]), suggesting that AMPK activation enhances sirtuin activity. Sustained AMPK activation during days 9–14 of differentiation induces sirtuin-mediated histone deacetylation and may enhance cardiomyocyte differentiation from iPSCs. iPSC-derived cardiomyocytes transiently increased AMPK phosphorylation at Thr172 Chemical inhibition of AMPK with compound C decreased TNNI3 and TNNT2 expression Sustained activation of AMPK using AICAR increased expression of TNNT2 and TNNI3 AICAR decreased acetylation of histones H3 (at Lys9 and Lys56) and H4 (at Lys16).
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Affiliation(s)
- Mohsen Sarikhani
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Jessica C Garbern
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA; Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Sai Ma
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Department of Biology and Koch Institute, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Rebecca Sereda
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Jeffrey Conde
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Guido Krähenbühl
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Gabriela O Escalante
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Aishah Ahmed
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Jason D Buenrostro
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA
| | - Richard T Lee
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA; Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
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29
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Sano R, Shinozaki Y, Ohta T. Sodium-glucose cotransporters: Functional properties and pharmaceutical potential. J Diabetes Investig 2020; 11:770-782. [PMID: 32196987 PMCID: PMC7378437 DOI: 10.1111/jdi.13255] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/06/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023] Open
Abstract
Glucose is the most abundant monosaccharide, and an essential source of energy for most living cells. Glucose transport across the cell membrane is mediated by two types of transporters: facilitative glucose transporters (gene name: solute carrier 2A) and sodium-glucose cotransporters (SGLTs; gene name: solute carrier 5A). Each transporter has its own substrate specificity, distribution, and regulatory mechanisms. Recently, SGLT1 and SGLT2 have attracted much attention as therapeutic targets for various diseases. This review addresses the basal and functional properties of glucose transporters and SGLTs, and describes the pharmaceutical potential of SGLT1 and SGLT2.
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Affiliation(s)
- Ryuhei Sano
- Biological/Pharmacological Research LaboratoriesCentral Pharmaceutical Research InstituteJapan Tobacco IncTakatsukiJapan
| | - Yuichi Shinozaki
- Biological/Pharmacological Research LaboratoriesCentral Pharmaceutical Research InstituteJapan Tobacco IncTakatsukiJapan
| | - Takeshi Ohta
- Laboratory of Animal Physiology and Functional AnatomyGraduate School of AgricultureKyoto UniversityKyotoJapan
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30
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Campolo A, Frantz MW, de Laat MA, Hartson SD, Furr MO, Lacombe VA. Differential Proteomic Expression of Equine Cardiac and Lamellar Tissue During Insulin-Induced Laminitis. Front Vet Sci 2020; 7:308. [PMID: 32596266 PMCID: PMC7303262 DOI: 10.3389/fvets.2020.00308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 05/05/2020] [Indexed: 12/22/2022] Open
Abstract
Endocrinopathic laminitis is pathologically similar to the multi-organ dysfunction and peripheral neuropathy found in human patients with metabolic syndrome. Similarly, endocrinopathic laminitis has been shown to partially result from vascular dysfunction. However, despite extensive research, the pathogenesis of this disease is not well elucidated and laminitis remains without an effective treatment. Here, we sought to identify novel proteins and pathways underlying the development of equine endocrinopathic laminitis. Healthy Standardbred horses (n = 4/group) were either given an electrolyte infusion, or a 48-h euglycemic-hyperinsulinemic clamp. Cardiac and lamellar tissues were analyzed by mass spectrometry (FDR = 0.05). All hyperinsulinemic horses developed laminitis despite being previously healthy. We identified 514 and 709 unique proteins in the cardiac and lamellar proteomes, respectively. In the lamellar tissue, we identified 14 proteins for which their abundance was significantly increased and 13 proteins which were significantly decreased in the hyperinsulinemic group as compared to controls. These results were confirmed via real-time reverse-transcriptase PCR. A STRING analysis of protein-protein interactions revealed that these increased proteins were primarily involved in coagulation and complement cascades, platelet activity, and ribosomal function, while decreased proteins were involved in focal adhesions, spliceosomes, and cell-cell matrices. Novel significant differentially expressed proteins associated with hyperinsulinemia-induced laminitis include talin−1, vinculin, cadherin-13, fibrinogen, alpha-2-macroglobulin, and heat shock protein 90. In contrast, no proteins were found to be significantly differentially expressed in the heart of hyperinsulinemic horses compared to controls. Together, these data indicate that while hyperinsulinemia induced, in part, microvascular damage, complement activation, and ribosomal dysfunction in the lamellae, a similar effect was not seen in the heart. In brief, this proteomic investigation of a unique equine model of hyperinsulinemia identified novel proteins and signaling pathways, which may lead to the discovery of molecular biomarkers and/or therapeutic targets for endocrinopathic laminitis.
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Affiliation(s)
- Allison Campolo
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Matthew W Frantz
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Melody A de Laat
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States.,Biosciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Steven D Hartson
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Martin O Furr
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Véronique A Lacombe
- Department of Biochemistry and Molecular Biology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
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31
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Tan HY, Tan SL, Teo SH, Roebuck MM, Frostick SP, Kamarul T. Development of a novel in vitro insulin resistance model in primary human tenocytes for diabetic tendinopathy research. PeerJ 2020; 8:e8740. [PMID: 32587790 PMCID: PMC7304430 DOI: 10.7717/peerj.8740] [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: 08/21/2019] [Accepted: 02/12/2020] [Indexed: 11/20/2022] Open
Abstract
Background Type 2 diabetes mellitus (T2DM) had been reported to be associated with tendinopathy. However, the underlying mechanisms of diabetic tendinopathy still remain largely to be discovered. The purpose of this study was to develop insulin resistance (IR) model on primary human tenocytes (hTeno) culture with tumour necrosis factor-alpha (TNF-α) treatment to study tenocytes homeostasis as an implication for diabetic tendinopathy. Methods hTenowere isolated from human hamstring tendon. Presence of insulin receptor beta (INSR-β) on normal tendon tissues and the hTeno monolayer culture were analyzed by immunofluorescence staining. The presence of Glucose Transporter Type 1 (GLUT1) and Glucose Transporter Type 4 (GLUT4) on the hTeno monolayer culture were also analyzed by immunofluorescence staining. Primary hTeno were treated with 0.008, 0.08, 0.8 and 8.0 µM of TNF-α, with and without insulin supplement. Outcome measures include 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino]-2-deoxy-d-glucose (2-NBDG) assay to determine the glucose uptake activity; colourimetric total collagen assay to quantify the total collagen expression levels; COL-I ELISA assay to measure the COL-I expression levels and real-time qPCR to analyze the mRNA gene expressions levels of Scleraxis (SCX), Mohawk (MKX), type I collagen (COL1A1), type III collagen (COL3A1), matrix metalloproteinases (MMP)-9 and MMP-13 in hTeno when treated with TNF-α. Apoptosis assay for hTeno induced with TNF-α was conducted using Annexin-V FITC flow cytometry analysis. Results Immunofluorescence imaging showed the presence of INSR-β on the hTeno in the human Achilles tendon tissues and in the hTeno in monolayer culture. GLUT1 and GLUT4 were both positively expressed in the hTeno. TNF-α significantly reduced the insulin-mediated 2-NBDG uptake in all the tested concentrations, especially at 0.008 µM. Total collagen expression levels and COL-I expression levels in hTeno were also significantly reduced in hTeno treated with 0.008 µM of TNF-α. The SCX, MKX and COL1A1 mRNA expression levels were significantly downregulated in all TNF-α treated hTeno, whereas the COL3A1, MMP-9 and MMP-13 were significantly upregulated in the TNF–α treated cells. TNF-α progressively increased the apoptotic cells at 48 and 72 h. Conclusion At 0.008 µM of TNF-α, an IR condition was induced in hTeno, supported with the significant reduction in glucose uptake, as well as significantly reduced total collagen, specifically COL-I expression levels, downregulation of candidate tenogenic markers genes (SCX and MKX), and upregulation of ECM catabolic genes (MMP-9 and MMP-13). Development of novel IR model in hTeno provides an insight on how tendon homeostasis could be affected and can be used as a tool for further discovering the effects on downstream molecular pathways, as the implication for diabetic tendinopathy.
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Affiliation(s)
- Hui Yee Tan
- Tissue Engineering Group (TEG), National Orthopaedics Centre of Excellent Research & Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Federal Territory, Malaysia
| | - Sik Loo Tan
- Tissue Engineering Group (TEG), National Orthopaedics Centre of Excellent Research & Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Federal Territory, Malaysia
| | - Seow Hui Teo
- National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Federal Territory, Malaysia
| | - Margaret M Roebuck
- Musculoskeletal Science Research Group, Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, Other, United Kingdom
| | - Simon P Frostick
- Musculoskeletal Science Research Group, Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, Other, United Kingdom
| | - Tunku Kamarul
- Tissue Engineering Group (TEG), National Orthopaedics Centre of Excellent Research & Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Federal Territory, Malaysia
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Geraets IME, Glatz JFC, Luiken JJFP, Nabben M. Pivotal role of membrane substrate transporters on the metabolic alterations in the pressure-overloaded heart. Cardiovasc Res 2020; 115:1000-1012. [PMID: 30938418 DOI: 10.1093/cvr/cvz060] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/04/2019] [Accepted: 03/07/2019] [Indexed: 12/16/2022] Open
Abstract
Cardiac pressure overload (PO), such as caused by aortic stenosis and systemic hypertension, commonly results in cardiac hypertrophy and may lead to the development of heart failure. PO-induced heart failure is among the leading causes of death worldwide, but its pathological origin remains poorly understood. Metabolic alterations are proposed to be an important contributor to PO-induced cardiac hypertrophy and failure. While the healthy adult heart mainly uses long-chain fatty acids (FAs) and glucose as substrates for energy metabolism and to a lesser extent alternative substrates, i.e. lactate, ketone bodies, and amino acids (AAs), the pressure-overloaded heart is characterized by a shift in energy metabolism towards a greater reliance on glycolysis and alternative substrates. A key-governing kinetic step of both FA and glucose fluxes is at the level of their substrate-specific membrane transporters. The relative presence of these transporters in the sarcolemma determines the cardiac substrate preference. Whether the cardiac utilization of alternative substrates is also governed by membrane transporters is not yet known. In this review, we discuss current insight into the role of membrane substrate transporters in the metabolic alterations occurring in the pressure-overloaded heart. Given the increasing evidence of a role for alternative substrates in these metabolic alterations, there is an urgent need to disclose the key-governing kinetic steps in their utilization as well. Taken together, membrane substrate transporters emerge as novel targets for metabolic interventions to prevent or treat PO-induced heart failure.
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Affiliation(s)
- Ilvy M E Geraets
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, MD Maastricht, The Netherlands
| | - Jan F C Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, MD Maastricht, The Netherlands
| | - Joost J F P Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, MD Maastricht, The Netherlands
| | - Miranda Nabben
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, MD Maastricht, The Netherlands
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Gum Arabic improves the reproductive capacity through upregulation of testicular glucose transporters (GLUTs) mRNA expression in Alloxan induced diabetic rat. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.bcdf.2020.100218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Elucidating the mechanism of action of alpha-1-antitrypsin using retinal pigment epithelium cells exposed to high glucose. Potential use in diabetic retinopathy. PLoS One 2020; 15:e0228895. [PMID: 32032388 PMCID: PMC7006930 DOI: 10.1371/journal.pone.0228895] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/24/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Alpha-1-antitrypsin is a protein involved in avoidance of different processes that are seen in diabetic retinopathy pathogenesis. These processes include apoptosis, extracellular matrix remodeling and damage of vessel walls and capillaries. Furthermore, because of its anti-inflammatory effects, alpha-1-antitrypsin has been proposed as a possible therapeutic approach for diabetic retinopathy. Our group tested alpha-1-antitrypsin in a type 1 diabetes mouse model and observed a reduction of inflammation and retinal neurodegeneration. Thus, shedding light on the mechanism of action of alpha-1-antitrypsin at molecular level may explain how it works in the diabetic retinopathy context and show its potential for use in other retinal diseases. METHODS In this work, we evaluated alpha-1-antitrypsin in an ARPE-19 human cell line exposed to high glucose. We explored the expression of different mediators on signaling pathways related to pro-inflammatory cytokines production, glucose metabolism, epithelial-mesenchymal transition and other proteins involved in the normal function of retinal pigment epithelium by RT-qPCR and Western Blot. RESULTS We obtained different expression patterns for evaluated mediators altered with high glucose exposure and corrected with the use of alpha-1-antitrypsin. CONCLUSIONS The expression profile obtained in vitro for the evaluated proteins and mRNA allowed us to explain our previous results obtained on mouse models and to hypothesize how alpha-1-antitrypsin hinder diabetic retinopathy progression on a complex network between different signaling pathways. GENERAL SIGNIFICANCE This network helps to understand the way alpha-1-antitrypsin works in diabetic retinopathy and its scope of action.
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Song X, Zhu Y, Dai Z, Ling G, Tang H, Xu Q, Guo T. Correlation of GLUT1 and GLUT4 with prognosis of patients with hypothyroidism and cardiac insufficiency. AMERICAN JOURNAL OF CARDIOVASCULAR DISEASE 2020; 10:585-592. [PMID: 33489462 PMCID: PMC7811914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 09/13/2020] [Indexed: 04/14/2023]
Abstract
OBJECTIVE Hypothyroidism is a disease with symptoms of collective metabolic dysfunction and systemic dysfunction due to the lack of serum thyroid hormones caused by various reasons. GLUT4 is over-expressed in monocytes of patients with hyperthyroidism, there are also studies suggesting that there is a certain regulatory relationship of GLUT1 and GLUT4 with thyroid function. This study is aimed to explore the correlation of glucose transporter 1 (GLUT1) and GLUT4 with prognosis of patients with hypothyroidism and cardiac insufficiency. METHODS From July 2016 to October 2019, totally 116 patients with cardiac insufficiency complicated with subclinical hypothyroidism treated in our hospital were enrolled in the research group (RG), and 110 patients with cardiac insufficiency but normal thyroid function were enrolled in the control group (CG). Serum GLUT1, GLUT4, free triiodothyronine (FT3), free thyroxine (FT4) and thyroid stimulating hormone (TSH) were detected, and the correlation between them was analyzed. Then the predictive value and risk factors of GLUT1 and GLUT4 for poor prognosis of hypothyroidism complicated with cardiac insufficiency were analyzed. RESULTS The expression levels of GLUT1, GLUT4, FT3 and FT4 in serum of patients in RG was notably lower than that in CG, and TSH expression was remarkably higher than those in CG (P<0.05). In RG, GLUT1 and GLUT4 expression levels were positively correlated with FT3 and FT4 expression (P<0.05), but negatively correlated with TSH expression (P<0.05). ROC of GLUT1 and GLUT4 in RG in predicting poor prognosis of patients was over 0.8. Low expression of GLUT1 and GLUT4 and diabetes were independent risk factors for poor prognosis in patients with hypothyroidism complicated with cardiac insufficiency. CONCLUSION GLUT1 and GLUT4 expression levels were significantly decreased in serum of patients with hypothyroidism complicated with cardiac insufficiency. Both of them have high predictive value for poor prognosis of patients, and are independent risk factors for poor prognosis of patients.
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Affiliation(s)
- Xiaocheng Song
- Department of Respiratory and Critical Care Medicine, Naval Hospital of Eastern Theater of PLAZhoushan, Zhejiang Province, China
| | - Yudan Zhu
- Department of Respiratory and Critical Care Medicine, Naval Hospital of Eastern Theater of PLAZhoushan, Zhejiang Province, China
| | - Zhi Dai
- Department of Critical Care Medicine, 921 Hospital of Joint Logistics Support Force of PLAChangsha, Hunan Province, China
| | - Guimei Ling
- Department of Traditional Chinese Medicine, Baise Municipal HospitalBaise, Guangxi Province, China
| | - Hongqin Tang
- Department of Intensive Care Unit, Naval Hospital of Eastern Theater of PLAZhoushan, Zhejiang Province, China
| | - Qiannan Xu
- Department of Intensive Care Unit, Naval Hospital of Eastern Theater of PLAZhoushan, Zhejiang Province, China
| | - Tinglin Guo
- Department of Respiratory and Critical Care Medicine, Naval Hospital of Eastern Theater of PLAZhoushan, Zhejiang Province, China
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Lizák B, Szarka A, Kim Y, Choi KS, Németh CE, Marcolongo P, Benedetti A, Bánhegyi G, Margittai É. Glucose Transport and Transporters in the Endomembranes. Int J Mol Sci 2019; 20:ijms20235898. [PMID: 31771288 PMCID: PMC6929180 DOI: 10.3390/ijms20235898] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/16/2019] [Accepted: 11/21/2019] [Indexed: 12/18/2022] Open
Abstract
Glucose is a basic nutrient in most of the creatures; its transport through biological membranes is an absolute requirement of life. This role is fulfilled by glucose transporters, mediating the transport of glucose by facilitated diffusion or by secondary active transport. GLUT (glucose transporter) or SLC2A (Solute carrier 2A) families represent the main glucose transporters in mammalian cells, originally described as plasma membrane transporters. Glucose transport through intracellular membranes has not been elucidated yet; however, glucose is formed in the lumen of various organelles. The glucose-6-phosphatase system catalyzing the last common step of gluconeogenesis and glycogenolysis generates glucose within the lumen of the endoplasmic reticulum. Posttranslational processing of the oligosaccharide moiety of glycoproteins also results in intraluminal glucose formation in the endoplasmic reticulum (ER) and Golgi. Autophagic degradation of polysaccharides, glycoproteins, and glycolipids leads to glucose accumulation in lysosomes. Despite the obvious necessity, the mechanism of glucose transport and the molecular nature of mediating proteins in the endomembranes have been hardly elucidated for the last few years. However, recent studies revealed the intracellular localization and functional features of some glucose transporters; the aim of the present paper was to summarize the collected knowledge.
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Affiliation(s)
- Beáta Lizák
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - András Szarka
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, 1111 Budapest, Hungary;
| | - Yejin Kim
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
| | - Kyu-sung Choi
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
| | - Csilla E. Németh
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - Paola Marcolongo
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy; (P.M.); (A.B.)
| | - Angelo Benedetti
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy; (P.M.); (A.B.)
| | - Gábor Bánhegyi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - Éva Margittai
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
- Correspondence: ; Tel.: +36-459-1500 (ext. 60311); Fax: +36-1-2662615
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de Andrade NS, Chucata KLB, Magalhães WV, Nucci RAB, Da Costa-Santos N, Dias IR, de Souza Lima HD, Maifrino LBM, de Souza RR. Ultrastructural effects of diabetes in the right atrium cardiomyocytes of elderly Wistar rats. Cardiovasc Pathol 2019; 45:107181. [PMID: 31865268 DOI: 10.1016/j.carpath.2019.107181] [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: 09/23/2019] [Revised: 10/10/2019] [Accepted: 11/11/2019] [Indexed: 11/26/2022] Open
Abstract
The present study aimed to evaluate the effects of diabetes on quantitative parameters of right atrial cardiomyocytes of elderly rats. Wistar rats (14 months of age) were divided into two groups: streptozotocin-diabetic rats (DG) and control rats (CG). The groups were sacrificed at 16 months. Ultrafine sections of the right atrium were analyzed by electron microscopy. In elderly diabetic animals, histograms of the frequency distribution of natriuretic peptides according to their size showed increased number of small and medium peptides in relation to large peptides, which increased its numerical density leading to a decrease in the mean diameter of both natriuretic peptides. However, elderly diabetic animals remained normotensive. No significant difference was observed between the groups for the volume density of mitochondria, endoplasmic reticulum, and Golgi apparatus. In conclusion, elderly diabetic rats showed increased functional activity of atrial cardiomyocytes with greater production of natriuretic peptides in association with a quantitative maintenance of cytoplasmic components.
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Affiliation(s)
- Natalie Souza de Andrade
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil; Uninove University, São Paulo, SP, Brazil
| | - Kemily Loren Barros Chucata
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil
| | - Walkyria Villegas Magalhães
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil
| | - Ricardo Aparecido Baptista Nucci
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil; Department of Pathology, University of São Paulo Medical School, São Paulo, SP, Brazil.
| | - Nicolas Da Costa-Santos
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil
| | - Igor Roberto Dias
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil
| | | | - Laura Beatriz Mesiano Maifrino
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil; Dante Pazzanese Institute of Cardiology, São Paulo, SP, Brazil
| | - Romeu Rodrigues de Souza
- Laboratory of Morphological and Immunohistochemical Studies, São Judas Tadeu University, São Paulo, SP, Brazil; Department of Anatomy, Institute of Biomedical Sciences of University of São Paulo, São Paulo, SP, Brazil
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Liu Y, Bai F, Liu N, Ouyang F, Liu Q. The Warburg effect: A new insight into atrial fibrillation. Clin Chim Acta 2019; 499:4-12. [PMID: 31473195 DOI: 10.1016/j.cca.2019.08.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/23/2019] [Accepted: 08/28/2019] [Indexed: 12/28/2022]
Abstract
Atrial fibrillation (AF) is the most common sustained arrhythmia. Atrial remodeling, including electrical/structural/autonomic remodeling, plays a vital role in AF pathogenesis. All of these have been shown to contribute continuously to the self-perpetuating nature of AF. The Warburg effect was found to play important roles in tumor and non-tumor disease. Recently, lots of studies documented altered atrial metabolism in AF, but the specific mechanism and the impact of these changes upon AF initiation/progression remain unclear. In this article, we review the metabolic consideration in AF comprehensively and observe the footprints of the Warburg effect. We also summarize the signaling pathway involved in the Warburg effect during AF-HIF-1α and AMPK, and discuss their potential roles in AF maintenance and progression. In conclusion, we give the innovative idea that the Warburg effect exists in AF and promotes the progression of AF. Targeting it may provide new therapies for AF treatment.
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Affiliation(s)
- Yaozhong Liu
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Hunan Province, China
| | - Fan Bai
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Hunan Province, China
| | - Na Liu
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Hunan Province, China
| | - Feifan Ouyang
- Department of Cardiology, Asklepios-Klinik St Georg, Hamburg, Germany
| | - Qiming Liu
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Hunan Province, China.
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Kamran M, Kharazmi F, Malekzadeh K, Talebi A, Khosravi F, Soltani N. Effect of Long-term Administration of Oral Magnesium Sulfate and Insulin to Reduce Streptozotocin-Induced Hyperglycemia in Rats: the Role of Akt2 and IRS1 Gene Expressions. Biol Trace Elem Res 2019; 190:396-404. [PMID: 30519800 DOI: 10.1007/s12011-018-1555-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 10/23/2018] [Indexed: 12/29/2022]
Abstract
The effects of long-term oral administration of magnesium sulfate and insulin on hyperglycemia were investigated using Akt2 and IRS1 gene expression methods in streptozotocin-induced diabetic rats. Fifty rats were randomly divided into five experimental groups: 1, non-diabetic control (NDC); 2, Mg2+-treated non-diabetic control (Mg-NDC); 3, chronic diabetic (CD); 4, Mg2+-treated chronic diabetic (Mg-CD); and 5, insulin-treated chronic diabetic (Ins-CD). Streptozotocin was used to induce diabetes. The Mg-CD and Mg-NDC groups received 10 g/l of MgSO4 added to drinking water. The Ins-CD group received 2.5 U/kg of insulin twice a day. Blood glucose level and body weight were measured every week. The intraperitoneal glucose tolerance test (IPGTT) was performed after 16 weeks. MgSO4 administration improved the blood glucose level and IPGTT. It also increased Akt2 and IRS1 genes as well as protein expression. Insulin lowered the blood glucose level and increased IRS1 gene and protein expression, but did not affect Akt2 gene and protein expression. Glucose reduction after Mg therapy may be mediated, at least partially, via IRS1 and Akt2 genes and protein stimulation. In insulin-treated rats, insulin resistance was not significant due to the absence of Akt2 gene expression.
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Affiliation(s)
- Mitra Kamran
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Fatemeh Kharazmi
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Kianoosh Malekzadeh
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Ardeshir Talebi
- Clinical Pathology Department, Faculty of Medicine, Isfahan University of Medical Science, Isfahan, Iran
| | - Fatemah Khosravi
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Nepton Soltani
- Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran.
- Physiology Department, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran.
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Sheng Z, Ai B, Zheng L, Zheng X, Yang Y, Shen Y. Capability of polygonum cuspidatum extract in inhibiting AGEs and preventing diabetes. Food Sci Nutr 2019; 7:2006-2016. [PMID: 31289648 PMCID: PMC6593475 DOI: 10.1002/fsn3.1029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/03/2019] [Accepted: 03/07/2019] [Indexed: 12/13/2022] Open
Abstract
Diabetes is a metabolic disorder disease associated with advanced glycation end products (AGEs) and protein glycation. The effect of polygonum cuspidatum extract (PE) on AGEs and Nε-(Carboxymethyl)-L-lysine formation, protein glycation, and diabetes was investigated. Six primary phenolics in a range of 12.36 mg/g for ellagic acid to 0.01 mg/g for piceid were determined in PE. In an intermediate-moisture-foods model, inhibition rate of PE was as high as 54.2% for AGEs and 78.9% for CML under aw 0.75. The protein glycation was also inhibited by PE. In a diabetic rat model, the levels of blood glucose, serum malondialdehyde, cholesterol, triglycerides, and low-density lipoproteins were effectively reduced by PE treatment. The antioxidation capacity (T-AOC) and superoxide dismutase (SOD) activity were also mediated by PE. Additionally, the activates of liver function-related enzymes including alkaline phosphatase (ALP), glutamate pyruvate transaminase (GPT), and glutamate oxaloacetate transaminase (GOT) in diabetic rat were improved by PE.
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Affiliation(s)
- Zhanwu Sheng
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Binling Ai
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Lili Zheng
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Xiaoyan Zheng
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Yang Yang
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Yixiao Shen
- Haikou Experimental StationChinese Academy of Tropical Agricultural SciencesHaikouChina
- School of Nutrition and Food ScienceLouisiana State University Agricultural CenterBaton RougeLouisiana
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Shoop S, Maria Z, Campolo A, Rashdan N, Martin D, Lovern P, Lacombe VA. Glial Growth Factor 2 Regulates Glucose Transport in Healthy Cardiac Myocytes and During Myocardial Infarction via an Akt-Dependent Pathway. Front Physiol 2019; 10:189. [PMID: 30971932 PMCID: PMC6445869 DOI: 10.3389/fphys.2019.00189] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 02/14/2019] [Indexed: 12/23/2022] Open
Abstract
Neuregulin (NRG), a paracrine factor in myocytes, promotes cardiac development via the ErbB receptors. NRG-1β also improves cardiac function and cell survival after myocardial infarction (MI), although the mechanisms underlying these cardioprotective effects are not well elucidated. Increased glucose uptake has been shown to be cardio-protective during MI. We hypothesized that treatment with a recombinant version of NRG-1β, glial growth factor 2 (GGF2), will enhance glucose transport in the healthy myocardium and during MI. Cardiac myocytes were isolated from MI and healthy adult rats, and subsequently incubated with or without insulin or GGF2. Glucose uptake was measured using a fluorescent D-glucose analog. The translocation of glucose transporter (GLUT) 4 to the cell surface, the rate-limiting step in glucose uptake, was measured using a photolabeled biotinylation assay in isolated myocytes. Similar to insulin, acute in vitro GGF2 treatment increased glucose uptake in healthy cardiac myocytes (by 40 and 49%, respectively, P = 0.002). GGF2 treatment also increased GLUT4 translocation in healthy myocytes by 184% (P < 0.01), while ErbB 2/4 receptor blockade (by afatinib) abolished these effects. In addition, GGF2 treatment enhanced Akt phosphorylation (at both threonine and serine sites, by 75 and 139%, respectively, P = 0.029 and P = 0.01), which was blunted by ErbB 2/4 receptor blockade. GGF2 treatment increased the phosphorylation of AS160 (an Akt effector) by 72% (P < 0.05), as well as the phosphorylation of PDK-1 and PKC (by 118 and 92%, respectively, P < 0.05). During MI, cardiac GLUT4 translocation was downregulated by 44% (P = 0.004) and was partially rescued by both in vitro insulin and GGF2 treatment. Our data demonstrate that acute GGF2 treatment increased glucose transport in cardiac myocytes by activating the ErbB 2/4 receptors and subsequent key downstream effectors (i.e., PDK-1, Akt, AS160, and PKC). These findings highlight novel mechanisms of action of GGF2, which warrant further investigation in patients with heart failure.
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Affiliation(s)
- Shanell Shoop
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, United States
| | - Zahra Maria
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma, Oklahoma City, OK, United States
| | - Allison Campolo
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma, Oklahoma City, OK, United States
| | - Nabil Rashdan
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Dominic Martin
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, United States
| | - Pamela Lovern
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Véronique A Lacombe
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, United States.,Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, United States.,Harold Hamm Diabetes Center, University of Oklahoma, Oklahoma City, OK, United States
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Nicholson T, Church C, Tsintzas K, Jones R, Breen L, Davis ET, Baker DJ, Jones SW. Vaspin promotes insulin sensitivity of elderly muscle and is upregulated in obesity. J Endocrinol 2019; 241:JOE-18-0528.R3. [PMID: 30721136 DOI: 10.1530/joe-18-0528] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 02/05/2019] [Indexed: 02/02/2023]
Abstract
Adipokines have emerged as central mediators of insulin sensitivity and metabolism, in part due to the known association of obesity with metabolic syndrome disorders such as type 2 diabetes. Recent studies in rodents have identified the novel adipokine vaspin, as playing a protective role in inflammatory metabolic diseases by functioning to promote insulin sensitivity during metabolic stress. However, at present the skeletal muscle and adipose tissue expression of vaspin in humans is poorly characterised. Furthermore, the functional role of vaspin in skeletal muscle insulin sensitivity has not been studied. Since skeletal muscle is the major tissue for insulin-stimulated glucose uptake understanding the functional role of vaspin in human muscle insulin signalling is critical in determining its role in glucose homeostasis. The objective of this study was to profile the skeletal muscle and subcutaneous adipose tissue expression of vaspin in humans of varying adiposity and to determine the functional role of vaspin in mediating insulin signalling and glucose uptake in human skeletal muscle. Our data shows that vaspin is secreted from both human subcutaneous adipose tissue and skeletal muscle, and is more highly expressed in obese older individuals compared to lean older individuals. Furthermore, we demonstrate that vaspin induces activation of the PI3K/AKT axis, independent of insulin receptor activation, promotes GLUT4 expression and translocation and sensitises older obese human skeletal muscle to insulin-mediated glucose uptake.
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Affiliation(s)
- Tom Nicholson
- T Nicholson, Institute of Inflammation and Ageing, University of Birmingham, Nottingham, United Kingdom of Great Britain and Northern Ireland
| | - Chris Church
- C Church, Cardiovascular and Metabolic Disease, MedImmune, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Kostas Tsintzas
- K Tsintzas, School of Life Sciences, University of Nottingham, Nottingham, NG82AB, United Kingdom of Great Britain and Northern Ireland
| | - Robert Jones
- R Jones, School of Life Sciences, University of Nottingham, Nottingham, United Kingdom of Great Britain and Northern Ireland
| | - Leigh Breen
- L Breen, MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, United Kingdom of Great Britain and Northern Ireland
| | - Edward T Davis
- E Davis, Research and Development, Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham, United Kingdom of Great Britain and Northern Ireland
| | - David J Baker
- D Baker, Cardiovascular and Metabolic Disease, MedImmune, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Simon W Jones
- S Jones, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2WB, United Kingdom of Great Britain and Northern Ireland
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43
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Wei X, Wei H, Yang D, Li D, Yang X, He M, Lin E, Wu B. Effect of Aluminum Exposure on Glucose Metabolism and Its Mechanism in Rats. Biol Trace Elem Res 2018; 186:450-456. [PMID: 29589267 DOI: 10.1007/s12011-018-1318-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/20/2018] [Indexed: 12/21/2022]
Abstract
The effects of aluminum (Al) exposure on glucose metabolism and its mechanism were investigated. A total of 30 healthy Wistar male rats were randomly divided into two groups: control (GC) and experimental (GE). The GC group received intraperitoneal normal saline. The GE was established by intraperitoneal injected AlCl3 solution at 10 mg/kg for 30 days. Fasting blood glucose (FBG) and serum levels of insulin (FINS) were measured. The insulin resistance index (HOMA-IR) and pancreatic β cell function index (HOMA-β) were calculated and analyzed with homeostasis model assessment (HOMA). Pancreatic tissue was taken for pathological examination. Glucose transporter 4 (GLUT4) expression in skeletal muscle was detected by quantitative PCR and Western blot. Levels of FBG and HOMA-IR in GE were higher than those in GC at day 10 and 20 (P < 0.05). FINS in GE were higher than those in GC at day 10 and 20, and lower than those in GC at day 30 (P < 0.05). HOMA-β in GE was lower than that of GC at every time point (P < 0.05). Pathology showed that pancreatic damage changed more profoundly with prolongation of time in GE. Expression levels of GLUT4 mRNA and protein in rat skeletal muscle in GE were significantly lower than those in GC (P < 0.05). The results suggested that Al exposure affected glucose metabolism through pancreatic damage and reduction of GLUT4 expression.
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Affiliation(s)
- Xi Wei
- Department of Clinical College, Youjiang Medical College for Nationalities, Chengxiang Road 98, Baise, China
| | - Hua Wei
- Department of Endocrinology, The Affiliated Hospital, Youjiang Medical College for Nationalities, Zhongshan No 2 Road 18, Baise, China
| | - Dawei Yang
- Department of Endocrinology, The Affiliated Hospital, Youjiang Medical College for Nationalities, Zhongshan No 2 Road 18, Baise, China
| | - Dong Li
- Department of Endocrinology, The Affiliated Hospital, Youjiang Medical College for Nationalities, Zhongshan No 2 Road 18, Baise, China
| | - Xianli Yang
- Department of Clinical College, Youjiang Medical College for Nationalities, Chengxiang Road 98, Baise, China
| | - Mingjie He
- Department of Endocrinology, The Affiliated Hospital, Youjiang Medical College for Nationalities, Zhongshan No 2 Road 18, Baise, China
| | - Erbing Lin
- Department of Clinical College, Youjiang Medical College for Nationalities, Chengxiang Road 98, Baise, China
| | - Biaoliang Wu
- Department of Endocrinology, The Affiliated Hospital, Youjiang Medical College for Nationalities, Zhongshan No 2 Road 18, Baise, China.
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44
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Parriman M, Campolo A, Waller AP, Lacombe VA. Adverse Metabolic Effects of Diltiazem Treatment During Diabetic Cardiomyopathy. J Cardiovasc Pharmacol Ther 2018; 24:193-203. [PMID: 30458627 DOI: 10.1177/1074248418808392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Diabetes is a global epidemic disease, which leads to multiorgan dysfunction, including heart disease. Diabetes results from the limited absorption of glucose into insulin-sensitive tissues. The heart is one of the main organs to utilize glucose as an energy substrate. Glucose uptake into striated muscle is regulated by a family of membrane proteins called glucose transporters (GLUTs). Although calcium channel blockers, including diltiazem, are widely prescribed drugs for cardiovascular diseases, including in patients with diabetes, their pharmacological effects on glucose metabolism are somewhat controversial. We hypothesized that diltiazem treatment will exhibit detrimental effects on whole body glucose homeostasis and glucose transport in the striated muscle of patients with diabetes. Healthy and streptozotocin-treated rats were randomly assigned to receive diltiazem treatment or a placebo for 8 weeks. Blood glucose was significantly increased in the untreated diabetic groups, which worsened after diltiazem treatment. Diabetes decreased protein content of both GLUT4 (the predominate insulin-sensitive glucose transporter) and AS160 (Akt Substrate at 160 kDa, the downstream protein in the signaling cascade that regulates GLUT4 trafficking) in striated muscle of diabetic rats, with a more pronounced alteration after diltiazem treatment. We additionally reported that diabetic rodents displayed marked systolic dysfunction, which was not rescued by diltiazem treatment. In conclusion, diltiazem treatment worsened the effects of diabetes-induced hyperglycemia and diabetes-induced alterations in the regulation of glucose transport in striated muscle.
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Affiliation(s)
- Matt Parriman
- College of Pharmacy, The Ohio State University, OH, USA
| | - Allison Campolo
- Department of Physiological Sciences, Oklahoma State University, OK, USA
| | | | - Véronique A Lacombe
- College of Pharmacy, The Ohio State University, OH, USA.,Department of Physiological Sciences, Oklahoma State University, OK, USA
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45
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Maria Z, Campolo AR, Scherlag BJ, Ritchey JW, Lacombe VA. Dysregulation of insulin-sensitive glucose transporters during insulin resistance-induced atrial fibrillation. Biochim Biophys Acta Mol Basis Dis 2017; 1864:987-996. [PMID: 29291943 DOI: 10.1016/j.bbadis.2017.12.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/29/2017] [Accepted: 12/23/2017] [Indexed: 11/18/2022]
Abstract
Diabetes has been identified as major risk factor for atrial fibrillation (AF). Although glucose and insulin disturbances during diabetes may affect atrial function, little is known about the potential pathogenic role of glucose metabolism during AF. Glucose transport into the cell via glucose transporters (GLUTs) is the rate-limiting step of glucose utilization. Although GLUT4 is the major isoform, GLUT8 has emerged as a novel insulin-sensitive cardiac isoform. We hypothesized that atrial glucose homeostasis will be impaired during insulin resistance-induced AF. AF was induced by transesophageal atrial pacing in healthy mice and following a long-term high-fat-diet-induced insulin resistance. Active cell surface GLUT content was measured using the biotinylated photolabeling assay in the intact perfused heart. Atrial fibrosis, advanced glycation end products (AGEs) and glycogen were measured in the atria using histological analyses. Animals fed a high-fat-diet were obese and mildly hyperglycemic, and developed insulin resistance compared to controls. Insulin-resistant (IR) animals demonstrated an increased vulnerability to induced AF, as well as spontaneous AF. Insulin-stimulated translocation of GLUT4 and GLUT8 was down-regulated in the atria of IR animals, as well as their total protein expression. We also reported the absence of fibrosis, glycogen and AGE accumulation in the atria of IR animals. In the absence of structural remodeling and atrial fibrosis, these data suggest that insulin signaling dysregulation, resulting in impaired glucose transport in the atria, could provide a metabolic arrhythmogenic substrate and be a novel early pathogenic factor of AF.
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Affiliation(s)
- Zahra Maria
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, USA; Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Allison R Campolo
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, USA; Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Benjamin J Scherlag
- Department of Internal Medicine, University of Oklahoma, Oklahoma City, OK, USA
| | - Jerry W Ritchey
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, OK, USA
| | - Véronique A Lacombe
- Department of Physiological Sciences, Oklahoma State University, Stillwater, OK, USA; Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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Quantification of Cell-Surface Glucose Transporters in the Heart Using a Biotinylated Photolabeling Assay. Methods Mol Biol 2017. [PMID: 29218529 DOI: 10.1007/978-1-4939-7507-5_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The biotinylated photolabeling assay enables quantification of cell-surface glucose transporters (GLUTs). This technique has been successfully applied to quantify the cell-surface GLUT protein content in striated muscles and adipose tissue, as a means to evaluate GLUT trafficking. Here, we describe the detailed method of quantifying the cell-surface content of several GLUT isoforms (1, 4, 8, and 12) in isolated cardiac myocytes, as well as in the intact perfused atria and ventricle.
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47
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Russell J, Du Toit EF, Peart JN, Patel HH, Headrick JP. Myocyte membrane and microdomain modifications in diabetes: determinants of ischemic tolerance and cardioprotection. Cardiovasc Diabetol 2017; 16:155. [PMID: 29202762 PMCID: PMC5716308 DOI: 10.1186/s12933-017-0638-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/22/2017] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular disease, predominantly ischemic heart disease (IHD), is the leading cause of death in diabetes mellitus (DM). In addition to eliciting cardiomyopathy, DM induces a ‘wicked triumvirate’: (i) increasing the risk and incidence of IHD and myocardial ischemia; (ii) decreasing myocardial tolerance to ischemia–reperfusion (I–R) injury; and (iii) inhibiting or eliminating responses to cardioprotective stimuli. Changes in ischemic tolerance and cardioprotective signaling may contribute to substantially higher mortality and morbidity following ischemic insult in DM patients. Among the diverse mechanisms implicated in diabetic impairment of ischemic tolerance and cardioprotection, changes in sarcolemmal makeup may play an overarching role and are considered in detail in the current review. Observations predominantly in animal models reveal DM-dependent changes in membrane lipid composition (cholesterol and triglyceride accumulation, fatty acid saturation vs. reduced desaturation, phospholipid remodeling) that contribute to modulation of caveolar domains, gap junctions and T-tubules. These modifications influence sarcolemmal biophysical properties, receptor and phospholipid signaling, ion channel and transporter functions, contributing to contractile and electrophysiological dysfunction, cardiomyopathy, ischemic intolerance and suppression of protective signaling. A better understanding of these sarcolemmal abnormalities in types I and II DM (T1DM, T2DM) can inform approaches to limiting cardiomyopathy, associated IHD and their consequences. Key knowledge gaps include details of sarcolemmal changes in models of T2DM, temporal patterns of lipid, microdomain and T-tubule changes during disease development, and the precise impacts of these diverse sarcolemmal modifications. Importantly, exercise, dietary, pharmacological and gene approaches have potential for improving sarcolemmal makeup, and thus myocyte function and stress-resistance in this ubiquitous metabolic disorder.
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Affiliation(s)
- Jake Russell
- Menzies Health Institute Queensland, Griffith University, Southport, QLD, Australia
| | - Eugene F Du Toit
- Menzies Health Institute Queensland, Griffith University, Southport, QLD, Australia
| | - Jason N Peart
- Menzies Health Institute Queensland, Griffith University, Southport, QLD, Australia
| | - Hemal H Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California San Diego, San Diego, USA
| | - John P Headrick
- Menzies Health Institute Queensland, Griffith University, Southport, QLD, Australia. .,School of Medical Science, Griffith University, Southport, QLD, 4217, Australia.
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Pachymic acid inhibits the tumorigenicity of gastric cancer cells by the mitochondrial pathway. Anticancer Drugs 2017; 28:170-179. [PMID: 27792037 DOI: 10.1097/cad.0000000000000449] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Pachymic acid (PA), a lanostane-type triterpenoid derived from traditional Chinese herbals, has been reported to have antitumor activity in versatile cancer cells. However, the antitumor effect of PA in gastric cancer (GC) cells remains unclear. In this study, we aimed to explore the efficacy and mechanisms of PA in GC. The antiproliferative effect of PA was assessed by a growth assay and a colony formation assay. Flow cytometry was used to detect changes in cell cycle distribution. Apoptosis was assessed by an annexin V/propidium iodide double-staining assay. The expressions of the apoptosis-related proteins were measured by western blot. The mitochondrial capacity was observed by immunostaining of Mito Tracker Red and mitochondrial function protein MT. Xenograft models of GC were constructed by a subcutaneous injection of SGC-7901 and MKN-49P cells pretreated with PA. PA could potently inhibit GC cell growth and colony formation. PA significantly induced G1, G2/M, and inhibited G0 phase arrest in GC cell lines SGC-7901 and MKN-49P. PA induced cell apoptosis by regulating the expressions of apoptosis-related proteins (caspase-3, PARP, Bcl-2, and Bax) and suppressing the mitochondrial capacity of GC cell lines in vitro in a dose-dependent manner. In addition, PA suppressed the tumor growth of xenograft models of GC and prolonged the survival of animals markedly. In brief, the present study shows that PA induces apoptosis through inhibition of mitochondrial capacity in human GC cells. Our findings suggest that PA may have therapeutic potential in GC.
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Stanirowski PJ, Szukiewicz D, Pyzlak M, Abdalla N, Sawicki W, Cendrowski K. Analysis of correlations between the placental expression of glucose transporters GLUT-1, GLUT-4 and GLUT-9 and selected maternal and fetal parameters in pregnancies complicated by diabetes mellitus. J Matern Fetal Neonatal Med 2017; 32:650-659. [PMID: 28969476 DOI: 10.1080/14767058.2017.1387897] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE The aim of the study was to analyze the correlations between the expression of glucose transporters GLUT-1, GLUT-4, and GLUT-9 in human term placenta and selected maternal and fetal parameters in pregnancies complicated by diabetes mellitus (DM). MATERIALS AND METHODS Placental samples were obtained from healthy control (n = 25) and diabetic pregnancies, including diet-controlled gestational diabetes mellitus (GDMG1) (n = 16), insulin-controlled gestational diabetes mellitus (GDMG2) (n = 6), and pregestational DM (PGDM) (n = 6). Computer-assisted quantitative morphometry of stained placental sections was performed to determine the expression of selected glucose transporter proteins. For the purposes of correlation analysis, the following parameters were selected: type of diabetes, gestational age, maternal prepregnancy body mass index (BMI), gestational weight gain, third trimester glycated hemoglobin concentration, placental weight, fetal birth weight (FBW) as well as ultrasonographic indicators of fetal adiposity, including subscapular (SSFM), abdominal (AFM), and midthigh (MTFM) fat mass measurements. RESULTS In the PGDM group, the analysis demonstrated positive correlations between the placental expression of GLUT-1, GLUT-4, and GLUT-9 and FBW, AFM, and SSFM measurements (p < .05). Similarly in the GDMG2 patients positive correlations between GLUT-4 expression, FBW and SSFM were observed (p < .05). In the multivariate regression analysis, only the type of diabetes and FBW were significantly associated with GLUTs expression (p < .001). In addition, maternal prepregnancy BMI significantly contributed to GLUT-1 expression (p < .001). CONCLUSIONS The study results revealed that placental expression of GLUT-1, GLUT-4, and GLUT-9 may be involved in the intensification of the fetal growth in pregnancies complicated by GDM/PGDM.
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Affiliation(s)
- Paweł Jan Stanirowski
- a Department of Obstetrics, Gynecology and Oncology, II Faculty of Medicine , Medical University of Warsaw, Mazovian Bródno Hospital , Warsaw , Poland
| | - Dariusz Szukiewicz
- b Department of General and Experimental Pathology with Centre for Preclinical Research and Technology (CEPT), II Faculty of Medicine , Medical University of Warsaw , Warsaw , Poland
| | - Michał Pyzlak
- b Department of General and Experimental Pathology with Centre for Preclinical Research and Technology (CEPT), II Faculty of Medicine , Medical University of Warsaw , Warsaw , Poland
| | - Nabil Abdalla
- a Department of Obstetrics, Gynecology and Oncology, II Faculty of Medicine , Medical University of Warsaw, Mazovian Bródno Hospital , Warsaw , Poland
| | - Włodzimierz Sawicki
- a Department of Obstetrics, Gynecology and Oncology, II Faculty of Medicine , Medical University of Warsaw, Mazovian Bródno Hospital , Warsaw , Poland
| | - Krzysztof Cendrowski
- a Department of Obstetrics, Gynecology and Oncology, II Faculty of Medicine , Medical University of Warsaw, Mazovian Bródno Hospital , Warsaw , Poland
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50
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Shi Y, Wang W, Yang B, Tian H. ATF1 and RAS in exosomes are potential clinical diagnostic markers for cervical cancer. Cell Biochem Funct 2017; 35:477-483. [PMID: 29023897 DOI: 10.1002/cbf.3307] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/28/2017] [Accepted: 09/17/2017] [Indexed: 12/20/2022]
Abstract
Cervical cancer is one of the most common cancers among women worldwide. It is highly lethal yet can be treated when found in early stage. Thus, early detection is of significant important for early diagnosis of cervical cancer. Exosomes have been used as biomarkers in clinical diagnosis. It is unknown that whether blood exosomes associated with cervical cancer can be detected and if these exosomes can accurately represent the developmental stage of cervical cancer. Mouse models were made out of a relapsed cervical cancer patient's tumour sample for original and recurrent cervical cancer, and gene analysis in both tumours and exosomes in these mouse models were performed. We found that activating transcription factor 1 (ATF1) and RAS genes were significantly up-regulated in tumours of both primary and recurrent cervical cancer mouse model, and they can also be detected in the blood exosomes of the mouse model. Our results indicated that ATF1 and RAS could be potential candidate biomarkers for cervical cancer in early diagnosis. ATF1 and RAS genes were found significantly elevated in tumours of primary and recurrent cervical cancer mouse model, and they were also detected in the blood exosomes. Therefore, ATF1 and RAS could be used as a diagnostic marker for cervical cancer in the future.
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Affiliation(s)
- Yanhua Shi
- Jinan Second People's Hospital, Jinan, Shandong, China
| | - Wei Wang
- Department of Obstetrics and Gynecology, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Baozhi Yang
- Jinan Second People's Hospital, Jinan, Shandong, China
| | - Hongge Tian
- Department of Obstetrics and Gynecology, Shengli Oilfield Central Hospital, Dongying, Shandong, China
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