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Deng H, Liu H, Kang W, Lei C, Nie Z, Huang Y, Yao S. Biomineralization synthesis of a near-infrared fluorescent nanoprobe for direct glucose sensing in whole blood. NANOSCALE 2020; 12:864-870. [PMID: 31833533 DOI: 10.1039/c9nr06691h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A near-infrared (NIR) fluorescent nanoprobe that enables to circumvent the interference of background absorption and fluorescence in whole blood was developed for the direct sensing of blood glucose. Here, NIR fluorescent protein (iRFP) and glucose oxidase (GOx) were collectively deployed as the templates for the biomineralization of Mn2+ to prepare a NIR fluorescent nanoprobe (iRFP-GOx-MnO2 nanoparticles, iRGMs), in which the fluorescence of iRFP was effectively quenched by MnO2via energy transfer. When the iRGMs were mixed with whole blood samples, GOx can convert blood glucose into gluconic acid, as well as H2O2, which will reduce MnO2 and decompose the iRGMs. As a result, the NIR fluorescence of iRFPs was restored, providing a fluorometric assay for the direct detection of blood glucose. Owing to the high efficiency of the cascade reaction and the low background interference of the NIR fluorescence signal, accurate and rapid analysis of the glucose levels in whole blood samples was achieved using the iRGMs. Moreover, an iRGM-based paper device that only requires 5 microliters of samples was also demonstrated in the direct assay of blood glucose without any pretreatment, affording an alternative approach for the accurate monitoring of blood glucose levels.
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Affiliation(s)
- Honghua Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, P. R. China..
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Wang Q, Tian X, Wang Y, Wang Y, Li J, Zhao T, Li P. Role of Transient Receptor Potential Canonical Channel 6 (TRPC6) in Diabetic Kidney Disease by Regulating Podocyte Actin Cytoskeleton Rearrangement. J Diabetes Res 2020; 2020:6897390. [PMID: 31998809 PMCID: PMC6964719 DOI: 10.1155/2020/6897390] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 01/19/2023] Open
Abstract
Podocyte injury is an important pathogenesis step causing proteinuric kidney diseases such as diabetic kidney disease (DKD). Actin cytoskeleton rearrangement in podocyte induced by multiple pathogenic factors is believed to be the key process resulting in glomerular injury. Many studies have recently shown that transient receptor potential canonical channel 6 (TRPC6) in podocyte plays a critical role in the development and progression of proteinuric kidney disease by regulating its actin cytoskeleton rearrangement. This review is aimed at summarizing the role of TRPC6 on DKD by regulating the podocyte actin cytoskeleton rearrangement, thereby help further broaden our views and understanding on the mechanism of DKD and provide a theoretic basis for exploring new therapeutic targets for DKD patients.
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Affiliation(s)
- Qian Wang
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xuefei Tian
- Section of Nephrology, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Yuyang Wang
- Department of Nephrology, Guang'anmen Hospital of China Academy of Traditional Chinese Medical Sciences, Beijing 100053, China
| | - Yan Wang
- Beijing Key Laboratory of Diabetes Research and Care, Center for Endocrine Metabolism and Immune Diseases, Luhe Hospital, Capital Medical University, Beijing 101149, China
| | - Jialin Li
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Tingting Zhao
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
| | - Ping Li
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
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Lysosome restoration to activate podocyte autophagy: a new therapeutic strategy for diabetic kidney disease. Cell Death Dis 2019; 10:806. [PMID: 31649253 PMCID: PMC6813305 DOI: 10.1038/s41419-019-2002-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 09/04/2019] [Accepted: 09/23/2019] [Indexed: 01/13/2023]
Abstract
Autophagy, the intracellular lysosomal degradation process plays a pivotal role in podocyte homeostasis in diabetic kidney disease (DKD). Lysosomal function, autophagic activity, and their actions were investigated in vitro and in vivo. We found that LC3-II- and p62-positive vacuoles accumulated in podocytes of patients with DKD. Moreover, we found that advanced glycation end products (AGEs) could increase the protein expression of LC3-II and p62 in a dose- and time-dependent manner in cultured podocytes. However, the mRNA expression of LC3B, Beclin-1 or ATG7, as well as the protein level of Beclin-1 or ATG7 did not change significantly in the AGE-treated cells compared with that in control groups, suggesting that AGEs did not induce autophagy. In addition, AGEs led to an increase in the number of autophagosomes but not autolysosomes, accompanied with a failure in lysosomal turnover of LC3-II or p62, indicating that the degradation of autophagic vacuoles was blocked. Furthermore, we observed a dramatic decrease in the enzymatic activities, and the degradation of DQ-ovalbumin was significantly suppressed after podocytes were treated with AGEs. Plasma-irregular lysosomal-associated membrane protein 1 granules accompanied with the diffusion of cathepsin D expression and acridine orange redistribution were observed in AGE-treated podocytes, indicating that the lysosomal membrane permeability was triggered. Interestingly, we also found that AGEs-induced autophagic inhibition and podocyte injury were mimicked by the specific lysosomotropic agent, l-leucyl-l-leucine methyl ester. The exacerbated apoptosis and Rac-1-dependent actin-cytoskeletal disorganization were alleviated by an improvement in the lysosomal-dependent autophagic pathway by resveratrol plus vitamin E treatment in AGE-treated podocytes. However, the rescued effects were reversed by the addition of leupeptin, a lysosomal inhibitor. It suggests that restoring lysosomal function to activate autophagy may contribute to the development of new therapeutic strategies for DKD.
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54
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Chuang SM, Lee CC, Lo WY, Hsieh CL. Effect of acupressure at Sanyinjiao on albuminuria in patients with early diabetic nephropathy: A single-blind, randomized, controlled preliminary study. Explore (NY) 2019; 16:165-169. [PMID: 31591045 DOI: 10.1016/j.explore.2019.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/30/2019] [Accepted: 09/17/2019] [Indexed: 11/15/2022]
Abstract
BACKGROUND Elevated urinary albumin excretion is a clinical manifestation of early-stage diabetic nephropathy (DN). PURPOSE To investigate effect of acupressure at Sanyinjiao on albuminuria in patients with early DN. METHODS Total included 53 patients with DN and albuminuria; 21 were assigned to the sham group without acupressure, and 32 were assigned to the experimental group with acupressure at Sanyinjiao (SP6) for 8weeks. The experimental group was divided into experiment A (acupressure <45 days) and experiment B (acupressure ≥45 days). The primary outcome measure was the urine albuminuria/creatinine ratio (UACR) or logarithmic transformed urine microalbumin creatinine ratio (log-UACR) changes, and the secondary outcome measures were the estimated glomerular filtration rate and hemoglobin A1c. RESULTS The difference in UACR and log-UACR before and after the study was higher in the experiment B group than in the experiment A and sham groups. CONCLUSION Acupressure at Sanyinjiao for 8 weeks may reduce albuminuria in patients with DN. However, this study was a preliminary design.
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Affiliation(s)
- Shih-Ming Chuang
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Division of Endocrinology and Metabolism, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 10449, Taiwan; Mackay Junior College of Medicine, Nursing, and Management, Taipei 11272, Taiwan
| | - Chun-Chuan Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 10449, Taiwan
| | - Wan-Yu Lo
- Department of Biotechnoloty, Hung Kuang University, Taichung 43302, Taiwan
| | - Ching-Liang Hsieh
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Chinese Medicine Research Center, China Medical University, Taichung 40402, Taiwan; Research Center for Chinese Medicine and Acupuncture, China Medical University, Taichung 40402, Taiwan; Department of Chinese Medicine, China Medical University Hospital, Taichung 40402, Taiwan.
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55
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Smolyanskaya OA, Lazareva EN, Nalegaev SS, Petrov NV, Zaytsev KI, Timoshina PA, Tuchina DK, Toropova YG, Kornyushin OV, Babenko AY, Guillet JP, Tuchin VV. Multimodal Optical Diagnostics of Glycated Biological Tissues. BIOCHEMISTRY (MOSCOW) 2019; 84:S124-S143. [PMID: 31213199 DOI: 10.1134/s0006297919140086] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia accompanied by the disruption of carbohydrate, lipid, and proteins metabolism and development of long-term microvascular, macrovascular, and neuropathic changes. This review presents the results of spectroscopic studies on the glycation of tissues and cell proteins in organisms with naturally developing and model diabetes and in vitro glycated samples in a wide range of electromagnetic waves, from visible light to terahertz radiation. Experiments on the refractometric measurements of glycated and oxygenated hemoglobin in broad wavelength and temperature ranges using digital holographic microscopy and diffraction tomography are discussed, as well as possible application of these methods in the diabetes diagnostics. It is shown that the development and implementation of multimodal approaches based on a combination of phase diagnostics with other methods is another promising direction in the diabetes diagnostics. The possibilities of using optical clearing agents for monitoring the diffusion of substances in the glycated tissues and blood flow dynamics in the pancreas of animals with induced diabetes have also been analyzed.
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Affiliation(s)
| | - E N Lazareva
- Saratov State University, Saratov, 410012, Russia.,Tomsk State University, Tomsk, 634050, Russia
| | | | - N V Petrov
- ITMO University, St. Petersburg, 197101, Russia
| | - K I Zaytsev
- Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia.,Institute of Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia.,Bauman Moscow State Technical University, Moscow, 105005, Russia
| | - P A Timoshina
- Saratov State University, Saratov, 410012, Russia.,Tomsk State University, Tomsk, 634050, Russia
| | - D K Tuchina
- Saratov State University, Saratov, 410012, Russia.,Tomsk State University, Tomsk, 634050, Russia.,Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Ya G Toropova
- Almazov National Medical Research Centre, St. Petersburg, 197341, Russia
| | - O V Kornyushin
- Almazov National Medical Research Centre, St. Petersburg, 197341, Russia
| | - A Yu Babenko
- Almazov National Medical Research Centre, St. Petersburg, 197341, Russia
| | - J-P Guillet
- IMS Laboratory, University of Bordeaux, Talence, 33405, France
| | - V V Tuchin
- ITMO University, St. Petersburg, 197101, Russia.,Saratov State University, Saratov, 410012, Russia.,Tomsk State University, Tomsk, 634050, Russia.,Institute of Precision Mechanics and Control, Russian Academy of Sciences, Saratov, 410028, Russia
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56
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Liu YH, Lee TL, Han CH, Lee YS, Hou WC. Anti-glycation, anti-hemolysis, and ORAC activities of demethylcurcumin and tetrahydroxycurcumin in vitro and reductions of oxidative stress in D-galactose-induced BALB/c mice in vivo. BOTANICAL STUDIES 2019; 60:9. [PMID: 31250143 PMCID: PMC6597665 DOI: 10.1186/s40529-019-0258-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND There were few report concerning anti-glycation and antioxidant activities of the minor amounts of components in curcuminoids, demethylcurcumin and tetrahydroxycurcumin, in vitro and in vivo. RESULTS The bovine serum albumin/galactose of non-enzymatic glycation models, radical-induced hemolysis, and oxygen radical absorbance capacity (ORAC) were studied in vitro, and the D-galactose-induced oxidative stress in BALB/c mice and then demethylcurcumin or tetrahydroxycurcumin interventions in vivo. The parameters of oxidative stress in plasma and brain extracts were determined among animal groups with or without both curcuminoids interventions. The demethylcurcumin and tetrahydroxycurcumin exhibited anti-glycation, anti-hemolysis, and ORAC activities, and showed much better and significant difference (P < 0.05) compared to those of curcumin in vitro. In animal experiments, the intervened two curcuminoids at both concentrations showed to lower serum malondialdehyde (MDA), brain MDA levels and iNOS protein expressions, and elevate serum ORAC activities, and showed difference (P < 0.05) compared to the galactose-induced control. CONCLUSION The demethylcurcumin and tetrahydroxycurcumin showed potentials in developing functional foods for antioxidant-related purposes.
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Affiliation(s)
- Yuh-Hwa Liu
- Division of Gastroenterology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, 111 Taiwan
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 110 Taiwan
| | - Tai-Lin Lee
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, 110 Taiwan
| | - Chuan-Hsiao Han
- Department of Health and Creative Vegetarian Science, Fo Guang University, Yilan, 262 Taiwan
| | - Yi-Shan Lee
- Graduate Institute of Pharmacognosy, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, 110 Taiwan
| | - Wen-Chi Hou
- Graduate Institute of Pharmacognosy, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, 110 Taiwan
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57
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Stacpoole PW, Martyniuk CJ, James MO, Calcutt NA. Dichloroacetate-induced peripheral neuropathy. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 145:211-238. [PMID: 31208525 DOI: 10.1016/bs.irn.2019.05.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Dichloroacetate (DCA) has been the focus of research by both environmental toxicologists and biomedical scientists for over 50 years. As a product of water chlorination and a metabolite of certain industrial chemicals, DCA is ubiquitous in our biosphere at low μg/kg body weight daily exposure levels without obvious adverse effects in humans. As an investigational drug for numerous congenital and acquired diseases, DCA is administered orally or parenterally, usually at doses of 10-50mg/kg per day. As a therapeutic, its principal mechanism of action is to inhibit pyruvate dehydrogenase kinase (PDK). In turn, PDK inhibits the key mitochondrial energy homeostat, pyruvate dehydrogenase complex (PDC), by reversible phosphorylation. By blocking PDK, DCA activates PDC and, consequently, the mitochondrial respiratory chain and ATP synthesis. A reversible sensory/motor peripheral neuropathy is the clinically limiting adverse effect of chronic DCA exposure and experimental data implicate the Schwann cell as a toxicological target. It has been postulated that stimulation of PDC and respiratory chain activity by DCA in normally glycolytic Schwann cells causes uncompensated oxidative stress from increased reactive oxygen species production. Additionally, the metabolism of DCA interferes with the catabolism of the amino acids phenylalanine and tyrosine and with heme synthesis, resulting in accumulation of reactive molecules capable of forming adducts with DNA and proteins and also resulting in oxidative stress. Preliminary evidence in rodent models of peripheral neuropathy suggest that DCA-induced neurotoxicity may be mitigated by naturally occurring antioxidants and by a specific class of muscarinic receptor antagonists. These findings generate a number of testable hypotheses regarding the etiology and treatment of DCA peripheral neuropathy.
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Affiliation(s)
- Peter W Stacpoole
- Department of Medicine, College of Medicine, University of Florida, Gainesville, FL, United States; Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL, United States.
| | - Christopher J Martyniuk
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
| | - Margaret O James
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Nigel A Calcutt
- Department of Pathology, University of California San Diego, La Jolla, CA, United States
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58
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Sakai T, Miura S. Effects of Sodium-Glucose Cotransporter 2 Inhibitor on Vascular Endothelial and Diastolic Function in Heart Failure With Preserved Ejection Fraction - Novel Prospective Cohort Study. Circ Rep 2019; 1:286-295. [PMID: 33693152 PMCID: PMC7892484 DOI: 10.1253/circrep.cr-19-0018] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background: Pathogenesis of heart failure with preserved ejection fraction (HFpEF) may involve endothelial dysfunction and abnormal vascular structure. Sodium-glucose cotransporter 2 (SGLT2) inhibitors have beneficial cardiovascular effects and may improve vascular function in patients with HFpEF. Methods and Results: We recruited 184 patients with type 2 diabetes and HFpEF (mean age, 66.0±14.4 years) who were scheduled for treatment with SGLT2 inhibitors, had transthoracic echocardiogram to identify diastolic function, and flow-mediated dilation (FMD) to evaluate endothelial function, and assessed cardio-ankle vascular index (CAVI) and carotid intima-media thickness as indices of vascular function and vascular structure, respectively. Body weight, systolic blood pressure, diastolic blood pressure, triglycerides, remnant lipoprotein cholesterol, fasting plasma glucose, hemoglobin A1c, urinary albumin/creatinine ratio, and insulin resistance (IR) decreased, hematocrit and FMD increased significantly, and CAVI decreased significantly, after 12-week treatment (P<0.05). Short-term SGLT2 inhibitors improved diastolic function, significantly reducing the mitral ratios of septal E/early septal annular tissue Doppler velocity (P=0.003) and lateral E/early lateral e' (P=0.044). On multiple regression statistically significant associations were seen between ∆mean E/e' and ∆FMD, ∆CAVI, and ∆IR. Conclusions: SGLT2 inhibitors can improve diastolic function in patients with type 2 diabetes, suggesting that current treatment policies for diabetes should be re-examined. Further prospective studies with larger sample sizes could provide mechanistic insights into the benefits of SGLT2 inhibitors.
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Affiliation(s)
- Takaaki Sakai
- Department of Cardiology, Ichijyukai NISHIO Hospital Fukuoka Japan.,Department of Cardiology, Fukuoka University School of Medicine Fukuoka Japan
| | - Shinichiro Miura
- Department of Cardiology, Fukuoka University School of Medicine Fukuoka Japan
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59
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Kim HR, Kim SY. Perilla frutescens Sprout Extract Protect Renal Mesangial Cell Dysfunction against High Glucose by Modulating AMPK and NADPH Oxidase Signaling. Nutrients 2019; 11:nu11020356. [PMID: 30744045 PMCID: PMC6413074 DOI: 10.3390/nu11020356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 01/28/2019] [Accepted: 02/04/2019] [Indexed: 12/25/2022] Open
Abstract
Perilla frutescens (L.) Britt. var. japonica (Hassk.) Hara (PF), is a medical herb of the Lamiaceae family. We have previously reported that the PF sprout extract (PFSE) is effective in treating hyperglycemia. However, the role of PFSE on glomerular mesangial cells (MCs) proliferation and the extracellular matrix (ECM) accumulation in a diabetic condition are still unclear. Therefore, in this study, we have investigated the role of PFSE on cell proliferation and ECM accumulation in murine glomerular MCs (MMCs), cultured under a high glucose (HG) condition. PFSE treatment attenuated HG-induced MMCs proliferation and hypertrophy. Moreover, the HG-induced ECM protein, collagen IV and fibronectin, overexpression was abolished by the PFFSE treatment. In addition, PFSE inhibited reactive oxygen species (ROS) overproduction and NOX2 and NOX4 expression in MMCs under a HG condition. Our data further revealed the involvement of mesangial cell damage in AMP-activated kinase (AMPK) activation. PFSE strongly activated AMPK in MMCs under hyperglycemic conditions. These results suggest that PFSE inhibits HG-medicated MC fibrosis through suppressing the activation of NOX2/4 and the AMPK activation mechanism. PFSE may be useful for the prevention or treatment of diabetic nephropathy.
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Affiliation(s)
- Ha-Rim Kim
- Jeonju AgroBio-Materials Institute, 54810, Wonjangdong-gil 111-27, Deokjin-gu, Jeonju-si 54810, Jeollabuk-do, Korea.
| | - Seon-Young Kim
- Jeonju AgroBio-Materials Institute, 54810, Wonjangdong-gil 111-27, Deokjin-gu, Jeonju-si 54810, Jeollabuk-do, Korea.
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60
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Aouiss A, Anka Idrissi D, Kabine M, Zaid Y. Update of inflammatory proliferative retinopathy: Ischemia, hypoxia and angiogenesis. Curr Res Transl Med 2019; 67:62-71. [PMID: 30685380 DOI: 10.1016/j.retram.2019.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 12/19/2018] [Accepted: 01/16/2019] [Indexed: 02/06/2023]
Abstract
Diabetic retinopathy (DR) and retinopathy of prematurity (ROP) present two examples of proliferative retinopathy, characterized by the same stages of progression; ischemia of the retinal vessels, leads to hypoxia and to correct the problem there is the setting up of uncontrolled angiogenesis, which subsequently causes blindness or even detachment of the retina. The difference is the following; that DR initiated by the metabolic complications that are due to hyperglycemia, and ROP is induced by overexposure of the neonatal retina to oxygen. In this review, we will demonstrate the physiopathological mechanism of the two forms of proliferative retinopathy DR and ROP, in particular the role of the CD40/CD40L axis and IL-1 on vascular complications and onset of inflammation of the retina, the implications of their effects on the onset of pathogenic angiogenesis, thus understanding the link between platelets and retinal ischemia. In addition, what are the therapeutic targets that could slow its progression?
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Affiliation(s)
- A Aouiss
- Laboratory of Health and Environment, Department of Biology, Faculty of Sciences Ain Chock, University of Hassan II, Casablanca, Morocco.
| | - D Anka Idrissi
- Laboratory of Health and Environment, Department of Biology, Faculty of Sciences Ain Chock, University of Hassan II, Casablanca, Morocco
| | - M Kabine
- Laboratory of Health and Environment, Department of Biology, Faculty of Sciences Ain Chock, University of Hassan II, Casablanca, Morocco
| | - Y Zaid
- Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, Montreal, H1T1C8, Quebec, Canada
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61
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Teodoro JS, Nunes S, Rolo AP, Reis F, Palmeira CM. Therapeutic Options Targeting Oxidative Stress, Mitochondrial Dysfunction and Inflammation to Hinder the Progression of Vascular Complications of Diabetes. Front Physiol 2019; 9:1857. [PMID: 30705633 PMCID: PMC6344610 DOI: 10.3389/fphys.2018.01857] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 12/11/2018] [Indexed: 12/29/2022] Open
Abstract
Type 2 diabetes mellitus is a leading cause of morbidity and mortality worldwide, given its serious associated complications. Despite constant efforts and intensive research, an effective, ubiquitous treatment still eludes the scientific community. As such, the identification of novel avenues of research is key to the potential discovery of this evasive "silver bullet." We focus on this review on the matter of diabetic injury to endothelial tissue and some of the pivotal underlying mechanisms, including hyperglycemia and hyperlipidemia evoked oxidative stress and inflammation. In this sense, we revisited the most promising therapeutic interventions (both non-pharmacological and antidiabetic drugs) targeting oxidative stress and inflammation to hinder progression of vascular complications of diabetes. This review article gives particular attention to the relevance of mitochondrial function, an often ignored and understudied organelle in the vascular endothelium. We highlight the importance of mitochondrial function and number homeostasis in diabetic conditions and discuss the work conducted to address the aforementioned issue by the use of various therapeutic strategies. We explore here the functional, biochemical and bioenergetic alterations provoked by hyperglycemia in the endothelium, from elevated oxidative stress to inflammation and cell death, as well as loss of tissue function. Furthermore, we synthetize the literature regarding the current and promising approaches into dealing with these alterations. We discuss how known agents and therapeutic behaviors (as, for example, metformin, dietary restriction or antioxidants) can restore normality to mitochondrial and endothelial function, preserving the tissue's function and averting the aforementioned complications.
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Affiliation(s)
- João S Teodoro
- Center for Neurosciences and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Sara Nunes
- Laboratory of Pharmacology and Experimental Therapeutics, Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research, University of Coimbra, Coimbra, Portugal
| | - Anabela P Rolo
- Center for Neurosciences and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Flávio Reis
- Laboratory of Pharmacology and Experimental Therapeutics, Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research, University of Coimbra, Coimbra, Portugal
| | - Carlos M Palmeira
- Center for Neurosciences and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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Xu Y, Xie L, Xie J, Liu Y, Chen W. Pelargonidin-3-O-rutinoside as a novel α-glucosidase inhibitor for improving postprandial hyperglycemia. Chem Commun (Camb) 2019; 55:39-42. [DOI: 10.1039/c8cc07985d] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Pg3R, a natural anthocyanin from strawberry, is identified as a novel α-glucosidase inhibitor and the SAR was systematically illustrated.
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Affiliation(s)
- Yang Xu
- Department of Food Science and Nutrition
- National Engineering Laboratory of Intelligent Food Technology and Equipment
- Zhejiang Key Laboratory for Agro-Food Processing
- Fuli Institute of Food Science
- Zhejiang University
| | - Lianghua Xie
- Department of Food Science and Nutrition
- National Engineering Laboratory of Intelligent Food Technology and Equipment
- Zhejiang Key Laboratory for Agro-Food Processing
- Fuli Institute of Food Science
- Zhejiang University
| | - Jiahong Xie
- Department of Food Science and Nutrition
- National Engineering Laboratory of Intelligent Food Technology and Equipment
- Zhejiang Key Laboratory for Agro-Food Processing
- Fuli Institute of Food Science
- Zhejiang University
| | - Yu Liu
- College of Life Science
- Zhejiang University
- Hangzhou 310058
- China
| | - Wei Chen
- Department of Food Science and Nutrition
- National Engineering Laboratory of Intelligent Food Technology and Equipment
- Zhejiang Key Laboratory for Agro-Food Processing
- Fuli Institute of Food Science
- Zhejiang University
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63
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Sadeghiyan Galeshkalami N, Abdollahi M, Najafi R, Baeeri M, Jamshidzade A, Falak R, Davoodzadeh Gholami M, Hassanzadeh G, Mokhtari T, Hassani S, Rahimifard M, Hosseini A. Alpha-lipoic acid and coenzyme Q10 combination ameliorates experimental diabetic neuropathy by modulating oxidative stress and apoptosis. Life Sci 2019; 216:101-110. [DOI: 10.1016/j.lfs.2018.10.055] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 01/25/2023]
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Borghetti G, von Lewinski D, Eaton DM, Sourij H, Houser SR, Wallner M. Diabetic Cardiomyopathy: Current and Future Therapies. Beyond Glycemic Control. Front Physiol 2018; 9:1514. [PMID: 30425649 PMCID: PMC6218509 DOI: 10.3389/fphys.2018.01514] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/09/2018] [Indexed: 12/14/2022] Open
Abstract
Diabetes mellitus and the associated complications represent a global burden on human health and economics. Cardiovascular diseases are the leading cause of death in diabetic patients, who have a 2–5 times higher risk of developing heart failure than age-matched non-diabetic patients, independent of other comorbidities. Diabetic cardiomyopathy is defined as the presence of abnormal cardiac structure and performance in the absence of other cardiac risk factors, such coronary artery disease, hypertension, and significant valvular disease. Hyperglycemia, hyperinsulinemia, and insulin resistance mediate the pathological remodeling of the heart, characterized by left ventricle concentric hypertrophy and perivascular and interstitial fibrosis leading to diastolic dysfunction. A change in the metabolic status, impaired calcium homeostasis and energy production, increased inflammation and oxidative stress, as well as an accumulation of advanced glycation end products are among the mechanisms implicated in the pathogenesis of diabetic cardiomyopathy. Despite a growing interest in the pathophysiology of diabetic cardiomyopathy, there are no specific guidelines for diagnosing patients or structuring a treatment strategy in clinical practice. Anti-hyperglycemic drugs are crucial in the management of diabetes by effectively reducing microvascular complications, preventing renal failure, retinopathy, and nerve damage. Interestingly, several drugs currently in use can improve cardiac health beyond their ability to control glycemia. GLP-1 receptor agonists and sodium-glucose co-transporter 2 inhibitors have been shown to have a beneficial effect on the cardiovascular system through a direct effect on myocardium, beyond their ability to lower blood glucose levels. In recent years, great improvements have been made toward the possibility of modulating the expression of specific cardiac genes or non-coding RNAs in vivo for therapeutic purpose, opening up the possibility to regulate the expression of key players in the development/progression of diabetic cardiomyopathy. This review summarizes the pathogenesis of diabetic cardiomyopathy, with particular focus on structural and molecular abnormalities occurring during its progression, as well as both current and potential future therapies.
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Affiliation(s)
- Giulia Borghetti
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Dirk von Lewinski
- Division of Cardiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Deborah M Eaton
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Harald Sourij
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Steven R Houser
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Markus Wallner
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States.,Division of Cardiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
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Chen F, Sun Z, Zhu X, Ma Y. Astilbin inhibits high glucose-induced autophagy and apoptosis through the PI3K/Akt pathway in human proximal tubular epithelial cells. Biomed Pharmacother 2018; 106:1175-1181. [DOI: 10.1016/j.biopha.2018.07.072] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/07/2018] [Accepted: 07/13/2018] [Indexed: 12/22/2022] Open
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Shen M, Bai D, Liu B, Lu X, Hou R, Zeng C, Li N, Fu Z, Li C, Tao L, Wang H, Yin T. Dysregulated Txnip-ROS-Wnt axis contributes to the impaired ischemic heart repair in diabetic mice. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3735-3745. [PMID: 30261287 DOI: 10.1016/j.bbadis.2018.09.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 08/08/2018] [Accepted: 09/20/2018] [Indexed: 01/15/2023]
Abstract
Hyperglycemia-induced impairment of angiogenesis contributes to the unfavorable prognosis of myocardial ischemia in long-standing diabetes mellitus. The underlying mechanism remains largely unknown and therapeutic strategies thereby limited. In the present study, we investigated the possible involvement of thioredoxin-interacting protein (TXNIP) and Wnt/β-catenin signaling in the context, and their possible relation was also explored. STZ induced diabetic mice were subjected to myocardial infarction (MI). Adenovirus expressing shTXNIP, shCtnnb1 (β-catenin) driven by VE-Cadherin promoter was administered intramyocardially immediately after MI. Cardiac function, histology, and molecular analyses were performed at predetermined time points. Increased endothelial expression of TXNIP was found in diabetic hearts, which correlated well with reduced nuclear β-catenin expression, insufficient angiogenesis, aggravated cardiac remodeling, and poor survival. Endothelial-specific knockdown of TXNIP significantly rescued β-catenin activity, together with increased angiogenesis, preserved cardiac function, and improved survival rate. Moreover, additional knockdown of β-catenin essentially reversed the beneficial effects of TXNIP downregulation. In vitro, high glucose treatment of human umbilical vein endothelial cells (HUVECs) increased TXNIP levels and ROS concentration, while it reduced β-catenin activity. Silencing TXNIP or ROS scavenger restored the high glucose induced reduction of Wnt/β-catenin activity in HUVECs. In addition, either reduction of TXNIP expression or supplementation of exogenous Wnt3a improved the HUVECs quantity and migration under high glucose conditions. Diabetes-induced increase of TXNIP expression in the endothelium contributes to impaired angiogenesis after MI, especially via the elevation of ROS and the impaired Wnt/β-catenin signaling. Targeting TXNIP-ROS-Wnt is a promising strategy in improving the prognosis.
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Affiliation(s)
- Mingzhi Shen
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China; Department of Cardiology and National Clinical Research Center of Geriatrics Disease, Hainan Branch of PLA General Hospital, Sanya, Hainan, PR China
| | - Danna Bai
- Department of Physiology, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Bei Liu
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Xiaozhao Lu
- Department of Biochemistry and Molecular Biology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Rongrong Hou
- Department of Endocrinology, the Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, PR China
| | - Chao Zeng
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Na Li
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Zhenhong Fu
- Department of Cardiology, PLA General Hospital, Beijing, PR China
| | - Congye Li
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Ling Tao
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Haichang Wang
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China.
| | - Tao Yin
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi, PR China.
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67
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Ighodaro OM. Molecular pathways associated with oxidative stress in diabetes mellitus. Biomed Pharmacother 2018; 108:656-662. [PMID: 30245465 DOI: 10.1016/j.biopha.2018.09.058] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 12/31/2022] Open
Abstract
The role of oxidative stress in the occurrence and development of diabetes mellitus is both critical and pivotal. Several molecular event cascade in different metabolic pathways such as glycolytic, hexosamine, protein kinase C, polyol and advanced glycation end-product (AGE) pathways have been identified as pro-oxidative processes and are usually up-regulated in the diabetics. Inhibition of glyceraldehyde-3-P dehydrogenase by poly-ADP-ribose polymerase 1 and subsequent accumulation of the enzyme substrate (glyceraldehyde-3-P) appears to be central to diabetes-associated oxidative stress. Increased level of glyceraldehyde-3-P activates two major pro-oxidative pathways in diabetes: (i) It activates the AGE pathway, precisely the synthesis of methylglyoxal from non-enzymatic dephosphorylation of the triose phosphates (ii) It activates protein kinase C (PKC) pathway by promoting the synthesis of diacylglycerol. In addition, it causes the accumulation of glycolytic metabolites upstream, and this leads to excessive stimulation of other pro-oxidative pathways such as hexosamine and polyol pathways. This review tends to highlight the main oxidative processes associated with diabetes mellitus.
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Katsuhiro M, Hui Teoh S, Yamashiro H, Shinohara M, Fatchiyah F, Ohta T, Yamada T. Effects on Glycemic Control in Impaired Wound Healing in Spontaneously Diabetic Torii (SDT) Fatty Rats. ACTA ACUST UNITED AC 2018; 72:4-8. [PMID: 29416209 PMCID: PMC5789560 DOI: 10.5455/medarh.2018.72.4-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Introduction Impaired diabetic wound healing is an important issue in diabetic complications. The present study aims to evaluate the protective effect on glycemic control against impaired diabetic wound healing using a diabetic rat model. We investigated the wound healing process and effect on the impaired wound repair by glycemic control in the Spontaneously Diabetic Torii (SDT) fatty rat, which is a new animal model of obese type 2 diabetes and may be a good model for study impaired wound healing. Material and methods Male SDT fatty rats at 15 weeks of age were administered orally with sodium glucose co-transporter (SGLT) 2 inhibitor for 3 weeks. Wounds were induced at 2 weeks after SGLT 2 inhibitor treatment, and the wound areas were periodically examined in morphological and histological analyses. Results The SDT fatty rats showed a delayed wound healing as compared with the normal rats, but a glycemic control improved the impaired wound healing. In histological analysis in the skin of SDT fatty rats showed severe infiltration of inflammatory cell, hemorrhage and many bacterial masses in the remaining and slight fibrosis of crust on skin tissue. Thought that this results skin performance to be a delay of crust formation and regeneration of epithelium; however, these findings were ameliorated in the SGLT 2 inhibitor treated group. Conclusion Glycemic control is effective for treatment in diabetic wounds and the SDT fatty rat may be useful to investigate pathophysiological changes in impaired diabetic wound healing.
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Affiliation(s)
- Miyajima Katsuhiro
- Department of Nutritional Science and Food Safety Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Soon Hui Teoh
- Department of Nutritional Science and Food Safety Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Hideaki Yamashiro
- Laboratory of Animal Genetics, Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | | | - Fatchiyah Fatchiyah
- Research Center of SMONAGENES UB, Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, Malang, East Java, Indonesia
| | - Takeshi Ohta
- Laboratory of Animal Genetics, Graduate School of Science and Technology, Niigata University, Niigata, Japan.,CLEA Japan Inc., Tokyo Animal & Diet Dept., Tokyo, Japan
| | - Takahisa Yamada
- Laboratory of Animal Genetics, Graduate School of Science and Technology, Niigata University, Niigata, Japan
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Murai Y, Ohta T, Tadaki H, Miyajima K, Shinohara M, Fatchiyah F, Yamada T. Assessment of Pharmacological Responses to an Anti-diabetic Drug in a New Obese Type 2 Diabetic Rat Model. Med Arch 2018; 71:380-384. [PMID: 29416195 PMCID: PMC5764610 DOI: 10.5455/medarh.2017.71.380-384] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction The number of diabetic patients has recently been increasing worldwide, and numerous anti-diabetic drugs have been developed to induce good glycemic control. In particular, metformin, which exhibits glucose-lowering effects by suppressing gluconeogenesis in the liver, is widely used as a first line oral anti-diabetic drug for type 2 diabetes mellitus. Material and Methods In this study, the pharmacological effects of metformin were investigated using female and male Spontaneously Diabetic Torii (SDT) fatty rats, a new obese type 2 diabetic model. Results Two experiments were performed: an assessment of repeated treatment with metformin in female SDT fatty rats 5 to 13 weeks of age (experiment 1), and an assessment of repeated treatment with metformin in male SDT fatty rats 6 to 10 weeks of age (experiment 2). In female SDT fatty rats, metformin treatment led to good glycemic control, increases in sensory nerve conduction velocity, and improvements in pancreatic abnormalities such as irregular boundaries and vacuole form of islets. In male SDT fatty rats, metformin decreased blood glucose levels 4 weeks after treatment. Conclusion Metformin treatment led to maintained good glycemic control and improved neuropathy and pancreatic lesions in female SDT fatty rats. The SDT fatty rat is useful for the development of novel anti-diabetic agents that show potential to improve glucose metabolic disorders in the liver.
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Affiliation(s)
- Yasutaka Murai
- Laboratory of Animal Genetics, Division of Life and Food Sciences, Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Takeshi Ohta
- Laboratory of Animal Genetics, Division of Life and Food Sciences, Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Hironobu Tadaki
- Laboratory of Animal Genetics, Division of Life and Food Sciences, Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Katsuhiro Miyajima
- Department of Nutritional Science and Food Safety Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | | | - Fatchiyah Fatchiyah
- Research Center of Smart Molecule of Natural Genetics Resources (SMONAGENES), Brawijaya University, Jl. Mayjend. Panjaitan. Malang, East Java, Indonesia
| | - Takahisa Yamada
- Laboratory of Animal Genetics, Division of Life and Food Sciences, Graduate School of Science and Technology, Niigata University, Niigata, Japan
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Vyas B, Choudhary S, Singh PK, Singh B, Bahadur R, Malik AK, Silakari O. Identification of 2-benzoxazolinone derivatives as lead against molecular targets of diabetic complications. Chem Biol Drug Des 2018; 92:1981-1987. [DOI: 10.1111/cbdd.13369] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 07/03/2018] [Accepted: 07/14/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Bhawna Vyas
- Department of Chemistry; Punjabi University; Patiala Punjab India
| | - Shalki Choudhary
- Molecular Modeling Lab; Department of Pharmaceutical Sciences and Drug Research; Punjabi University; Patiala Punjab India
| | - Pankaj Kumar Singh
- Molecular Modeling Lab; Department of Pharmaceutical Sciences and Drug Research; Punjabi University; Patiala Punjab India
| | - Baldev Singh
- Department of Chemistry; Punjabi University; Patiala Punjab India
| | - Renu Bahadur
- Indian Council of Medical Research; New Delhi India
| | | | - Om Silakari
- Molecular Modeling Lab; Department of Pharmaceutical Sciences and Drug Research; Punjabi University; Patiala Punjab India
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71
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Zhu X, Cheng YQ, Lu Q, Du L, Yin XX, Liu YW. Enhancement of glyoxalase 1, a polyfunctional defense enzyme, by quercetin in the brain in streptozotocin-induced diabetic rats. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:1237-1245. [DOI: 10.1007/s00210-018-1543-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/18/2018] [Indexed: 12/14/2022]
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72
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Tang M, Ji X, Xu H, Zhang L, Jiang A, Song B, Su Y, He Y. Photostable and Biocompatible Fluorescent Silicon Nanoparticles-Based Theranostic Probes for Simultaneous Imaging and Treatment of Ocular Neovascularization. Anal Chem 2018; 90:8188-8195. [PMID: 29874038 DOI: 10.1021/acs.analchem.8b01580] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ocular neovascularization can result in devastating diseases that lead to marked vision impairment and eventual visual loss. In clinical implementation, neovascular eye diseases are first diagnosed by fluorescein angiography and then treated by multiple intravitreal injections, which nevertheless involves vision-threatening complications, as well as lack of real-time monitoring disease progression and timely assessment of therapeutic outcomes. To address this critical issue, we herein present a kind of theranostic agents made of peptide-functionalized silicon nanoparticles (SiNPs), suitable for simultaneous ocular neovascularization imaging and therapy. Typically, in addition to negligible toxicity and high specific binding ability to human retinal microvascular endothelial cells tube formation, the cyclo-(Arg-Gly-Asp-d-Tyr-Cys) ( c-(RGDyC))-conjugated SiNPs (SiNPs-RGD) features efficacious antiangiogenic ability in wound healing migration, transwell migration, transwell invasion, and tube formation assays. Taking advantage of these unique merits, we further employ the SiNPs-RGD for labeling angiogenic blood vessels and neovascularization suppression, demonstrating obvious inhibition of new blood vessels formation in mouse corneas. These results suggest the SiNPs-RGD as a novel class of high-quality theranostic probes is suitable for simultaneous diagnosis and treatment in ocular neovascular diseases.
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Affiliation(s)
- Miaomiao Tang
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Xiaoyuan Ji
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Hua Xu
- Department of Ophthalmology , Children's Hospital of Soochow University, Soochow University , Suzhou , Jiangsu 215123 , China
| | - Lu Zhang
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Airui Jiang
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Bin Song
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Yuanyuan Su
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Yao He
- Laboratory of Nanoscale Biochemical Analysis, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) , Soochow University , Suzhou , Jiangsu 215123 , China
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73
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Li B, Terazono Y, Hirasaki N, Tatemichi Y, Kinoshita E, Obata A, Matsui T. Inhibition of Glucose Transport by Tomatoside A, a Tomato Seed Steroidal Saponin, through the Suppression of GLUT2 Expression in Caco-2 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1428-1434. [PMID: 29355315 DOI: 10.1021/acs.jafc.7b06078] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We investigated whether tomatoside A (5α-furostane-3β,22,26-triol-3-[O-β-d-glucopyranosyl (1→2)-β-d-glucopyranosyl (1→4)-β-d-galactopyranoside] 26-O-β-d-glucopyranoside), a tomato seed saponin, may play a role in the regulation of intestinal glucose transport in human intestinal Caco-2 cells. Tomatoside A could not penetrate through Caco-2 cell monolayers, as observed in the transport experiments using liquid chromatography-mass spectrometry. The treatment of cells with 10 μM tomatoside A for 3 h resulted in a 46.0% reduction in glucose transport as compared to untreated cells. Western blotting analyses revealed that tomatoside A significantly (p < 0.05) suppressed the expression of glucose transporter 2 (GLUT2) in Caco-2 cells, while no change in the expression of sodium-dependent glucose transporter 1 was observed. In glucose transport experiments, the reduced glucose transport by tomatoside A was ameliorated by a protein kinase C (PKC) inhibitor and a multidrug resistance-associated protein 2 (MRP2) inhibitor. The tomatoside A-induced reduction in glucose transport was restored in cells treated with apical sodium-dependent bile acid transporter (ASBT) siRNA or an ASBT antagonist. These findings demonstrated for the first time that the nontransportable tomato seed steroidal saponin, tomatoside A, suppressed GLUT2 expression via PKC signaling pathway during the ASBT-influx/MRP2-efflux process in Caco-2 cells.
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Affiliation(s)
- Baorui Li
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University , 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Yusuke Terazono
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University , 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Naoto Hirasaki
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University , 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Yuki Tatemichi
- Research & Development Division, Kikkoman Co. , 399 Noda, Chiba 278-0037, Japan
| | - Emiko Kinoshita
- Research & Development Division, Kikkoman Co. , 399 Noda, Chiba 278-0037, Japan
| | - Akio Obata
- Research & Development Division, Kikkoman Co. , 399 Noda, Chiba 278-0037, Japan
| | - Toshiro Matsui
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University , 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
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74
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Yang D, Livingston MJ, Liu Z, Dong G, Zhang M, Chen JK, Dong Z. Autophagy in diabetic kidney disease: regulation, pathological role and therapeutic potential. Cell Mol Life Sci 2018; 75:669-688. [PMID: 28871310 PMCID: PMC5771948 DOI: 10.1007/s00018-017-2639-1] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 08/29/2017] [Accepted: 08/31/2017] [Indexed: 12/17/2022]
Abstract
Diabetic kidney disease, a leading cause of end-stage renal disease, has become a serious public health problem worldwide and lacks effective therapies. Autophagy is a highly conserved lysosomal degradation pathway that removes protein aggregates and damaged organelles to maintain cellular homeostasis. As important stress-responsive machinery, autophagy is involved in the pathogenesis of various diseases. Emerging evidence has suggested that dysregulated autophagy may contribute to both glomerular and tubulointerstitial pathologies in kidneys under diabetic conditions. This review summarizes the recent findings regarding the role of autophagy in the pathogenesis of diabetic kidney disease and highlights the regulation of autophagy by the nutrient-sensing pathways and intracellular stress signaling in this disease. The advances in our understanding of autophagy in diabetic kidney disease will facilitate the discovery of a new therapeutic target for the prevention and treatment of this life-threatening diabetes complication.
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Affiliation(s)
- Danyi Yang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Man J Livingston
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Zhiwen Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Guie Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Ming Zhang
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Jian-Kang Chen
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Zheng Dong
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China.
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA.
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75
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Daugherty DJ, Marquez A, Calcutt NA, Schubert D. A novel curcumin derivative for the treatment of diabetic neuropathy. Neuropharmacology 2018; 129:26-35. [PMID: 29122628 PMCID: PMC5841546 DOI: 10.1016/j.neuropharm.2017.11.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 12/16/2022]
Abstract
Neuropathy is a common complication of long-term diabetes. Proposed mechanisms of neuronal damage caused by diabetes that are downstream of hyperglycemia and/or loss of insulin signaling include ischemic hypoxia, inflammation and loss of neurotrophic support. The curcumin derivative J147 is a potent neurogenic and neuroprotective drug candidate initially developed for the treatment of neurodegenerative conditions associated with aging that impacts many pathways implicated in the pathogenesis of diabetic neuropathy. Here, we demonstrate efficacy of J147 in ameliorating multiple indices of neuropathy in the streptozotocin-induced mouse model of type 1 diabetes. Diabetes was determined by blood glucose, HbA1c, and insulin levels and efficacy of J147 by behavioral, physiologic, biochemical, proteomic, and transcriptomic assays. Biological efficacy of systemic J147 treatment was confirmed by its capacity to decrease TNFα pathway activation and several other markers of neuroinflammation in the CNS. Chronic oral treatment with J147 protected the sciatic nerve from progressive diabetes-induced slowing of large myelinated fiber conduction velocity while single doses of J147 rapidly and transiently reversed established touch-evoked allodynia. Conduction slowing and allodynia are clinically relevant markers of early diabetic neuropathy and neuropathic pain, respectively. RNA expression profiling suggests that one of the pathways by which J147 imparts its protection against diabetic induced neuropathy may be through activation of the AMP kinase pathway. The diverse biological and therapeutic effects of J147 suggest it as an alternative to the polypharmaceutical approaches required to treat the multiple pathogenic mechanisms that contribute to diabetic neuropathy.
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Affiliation(s)
| | | | | | - David Schubert
- The Salk Institute for Biological Studies, La Jolla, CA, USA
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76
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Peng BY, Dubey NK, Mishra VK, Tsai FC, Dubey R, Deng WP, Wei HJ. Addressing Stem Cell Therapeutic Approaches in Pathobiology of Diabetes and Its Complications. J Diabetes Res 2018; 2018:7806435. [PMID: 30046616 PMCID: PMC6036791 DOI: 10.1155/2018/7806435] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 04/19/2018] [Accepted: 05/27/2018] [Indexed: 12/14/2022] Open
Abstract
High morbidity and mortality of diabetes mellitus (DM) throughout the human population is a serious threat which needs to be addressed cautiously. Type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) are most prevalent forms. Disruption in insulin regulation and resistance leads to increased formation and accumulation of advanced end products (AGEs), which further enhance oxidative and nitrosative stress leading to microvascular (retinopathy, neuropathy, and nephropathy) and macrovascular complications. These complications affect the normal function of organ and tissues and may cause life-threatening disorders, if hyperglycemia persists and improperly controlled. Current and traditional treatment procedures are only focused on to regulate the insulin level and do not cure the diabetic complications. Pancreatic transplantation seemed a viable alternative; however, it is limited due to lack of donors. Cell-based therapy such as stem cells is considered as a promising therapeutic agent against DM and diabetic complications owing to their multilineage differentiation and regeneration potential. Previous studies have demonstrated the various impacts of both pluripotent and multipotent stem cells on DM and its micro- and macrovascular complications. Therefore, this review summarizes the potential of stem cells to treat DM and its related complications.
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Affiliation(s)
- Bou-Yue Peng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei City 110, Taiwan
- Department of Dentistry, Taipei Medical University Hospital, Taipei City 110, Taiwan
| | - Navneet Kumar Dubey
- Ceramics and Biomaterials Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Viraj Krishna Mishra
- Applied Biotech Engineering Centre (ABEC), Department of Biotechnology, Ambala College of Engineering and Applied Research, Ambala, India
| | - Feng-Chou Tsai
- Department of Stem Cell Research, Cosmetic Clinic Group, Taipei City 110, Taiwan
| | - Rajni Dubey
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei City 106, Taiwan
| | - Win-Ping Deng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei City 110, Taiwan
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Basic Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Hong-Jian Wei
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei City 110, Taiwan
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77
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Huang J, Zhu XL, Wang YM, Ge JH, Liu JW, Jiang JH. A multiplex paper-based nanobiocatalytic system for simultaneous determination of glucose and uric acid in whole blood. Analyst 2018; 143:4422-4428. [DOI: 10.1039/c8an00866c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this work, a versatile point-of-care assay platform based on a microfluidic paper-based analytic device (μPAD) was developed for the simultaneous detection of multiple targets.
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Affiliation(s)
- Jin Huang
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Xue-Li Zhu
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Yu-Min Wang
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Jian-Hui Ge
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Jin-Wen Liu
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Jian-Hui Jiang
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
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78
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Pan CW, Wang S, Xu CL, Song E. Combined effect of glycemic and blood pressure control on diabetic retinopathy among Chinese with type-2 diabetes mellitus. Diabetol Metab Syndr 2018; 10:73. [PMID: 30302129 PMCID: PMC6167778 DOI: 10.1186/s13098-018-0377-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 09/27/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND To explore the associations of glycemic and blood pressure (BP) control with diabetic retinopathy (DR), with special focus on whether different combinations of categories of these two interventions are additive. METHODS A community-based survey including 913 patients with known type-2 diabetes mellitus (T2DM) was conducted in Suzhou, China. Retinal photographs were graded for the presence of DR using the Airlie House classification system. BP and blood hemoglobin A1c (HbA1C) levels were measured by standardized protocols. Binary logistic regression models were established to examine the associations of risk factors with DR. RESULTS The overall prevalence of any DR was 18.0% [95% confidence interval (95% CI) 15.5-20.6%] in this population. Stratified by conventional control thresholds, lower levels of either systolic blood pressure (SBP, < 140 mmHg) or HbA1C (< 7.0%) were not significantly associated with decreased susceptibility to DR, while patients simultaneously with lower HbA1C and SBP levels demonstrated 43% reduced likelihood of developing DR [adjusted odds ratio (OR) = 0.57, 95% CI 0.33-0.99, P = 0.045)], comparing with those with both higher levels of HbA1C (≥ 7.0%) and SBP (≥ 140 mmHg). Meanwhile, the group achieved intensive HbA1C (< 6.5%) and SBP (< 120 mmHg) control goals were found to have the smallest OR, but failed in yielding statistical significance (P = 0.10). CONCLUSIONS In this community-based DR screening study of Chinese adults with T2DM, combination but not individual of lower SBP (< 140 mmHg) and HbA1C (< 7.0%) levels, were suggested to be associated with a significantly reduced likelihood of having DR.
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Affiliation(s)
- Chen-Wei Pan
- School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Shan Wang
- School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Cai-Lian Xu
- Lixiang Eye Hospital of Soochow University, 200 East Gan Jiang Road, Suzhou, 215123 China
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - E. Song
- Lixiang Eye Hospital of Soochow University, 200 East Gan Jiang Road, Suzhou, 215123 China
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
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79
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Fan C, Qiao Y, Tang M. Notoginsenoside R1 attenuates high glucose-induced endothelial damage in rat retinal capillary endothelial cells by modulating the intracellular redox state. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:3343-3354. [PMID: 29200830 PMCID: PMC5703151 DOI: 10.2147/dddt.s149700] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The aim of this study was to examine whether Notoginsenoside R1 (NR1) attenuates high glucose-induced cell damage in rat retinal capillary endothelial cells (RCECs) and to explore the mechanisms involved. The exposure of rat RCECs to high concentration of glucose (30 mM) for 72 h led to significant cytotoxicity, including decreased cell viability, reduced mitochondrial DNA copy number, increased lactate dehydrogenase release and elevated apoptosis. NR1, when present in the culture medium, markedly attenuated the high glucose-induced cytotoxicity in rat RCECs. Moreover, high glucose also induced a significant increase in intracellular reactive oxygen species and subsequently increased the activity of NADPH oxidase and poly-ADP (ribose) polymerase, whereas the activity of catalase decreased. The addition of NR1 to the medium significantly reduced the generation of reactive oxygen species, inhibited NADPH oxidase and poly-ADP (ribose) polymerase activities and increased catalase activity in RCECs, accompanied by a reduced cellular nitrotyrosine level. To explore the underlying mechanisms involved, the cellular redox status was monitored. Both the cellular NAD+ and NADPH levels decreased significantly in high glucose medium, which resulted in a marked decrease in the NAD+/NADH and NADPH/NADP+ ratios. High glucose stimulation also enhanced the accumulation of GSSG, maintaining the GSH/GSSG ratio lower than that in the control group with 5.5 mM glucose. When treated with NR1, the cellular NAD+, NADPH and GSH concentrations increased, and the ratios of NAD+/NADH, NADPH/NADP+ and GSH/GSSG increased, similar to the control group. These results demonstrate that NR1 attenuates high glucose-induced cell damage in RCECs. Therefore, NR1 may exert its protective effects via mechanisms that involve changes in the cellular redox state.
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Affiliation(s)
- Chunlan Fan
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yuan Qiao
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Minke Tang
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, People's Republic of China
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80
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Baldissera MD, Souza CF, Grando TH, Sagrillo MR, Cossetin LF, da Silva AS, Stefani LM, Monteiro SG. Tucumã oil (Astrocaryum vulgare) ameliorates hepatic antioxidant defense system in alloxan-induced diabetic mice. J Food Biochem 2017. [DOI: 10.1111/jfbc.12468] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Matheus D. Baldissera
- Department of Microbiology and Parasitology; Universidade Federal de Santa Maria (UFSM); Santa Maria Rio Grande do Sul Brazil
| | - Carine F. Souza
- Department of Microbiology and Parasitology; Universidade Federal de Santa Maria (UFSM); Santa Maria Rio Grande do Sul Brazil
| | - Thirssa H. Grando
- Department of Microbiology and Parasitology; Universidade Federal de Santa Maria (UFSM); Santa Maria Rio Grande do Sul Brazil
| | - Michele R. Sagrillo
- Laboratory of Cell Culture; Centro Universitário Franciscano; Santa Maria Rio Grande do Sul Brazil
| | - Luciana F. Cossetin
- Department of Microbiology and Parasitology; Universidade Federal de Santa Maria (UFSM); Santa Maria Rio Grande do Sul Brazil
| | - Aleksandro S. da Silva
- Graduate School of Animal Science; Universidade do Estado de Santa Catarina (UDESC); Chapecó Santa Catarina Brazil
| | - Lenita M. Stefani
- Graduate School of Animal Science; Universidade do Estado de Santa Catarina (UDESC); Chapecó Santa Catarina Brazil
| | - Silvia G. Monteiro
- Department of Microbiology and Parasitology; Universidade Federal de Santa Maria (UFSM); Santa Maria Rio Grande do Sul Brazil
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81
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Geijselaers SLC, Sep SJS, Claessens D, Schram MT, van Boxtel MPJ, Henry RMA, Verhey FRJ, Kroon AA, Dagnelie PC, Schalkwijk CG, van der Kallen CJH, Biessels GJ, Stehouwer CDA. The Role of Hyperglycemia, Insulin Resistance, and Blood Pressure in Diabetes-Associated Differences in Cognitive Performance-The Maastricht Study. Diabetes Care 2017; 40:1537-1547. [PMID: 28842522 DOI: 10.2337/dc17-0330] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/23/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To study to what extent differences in cognitive performance between individuals with different glucose metabolism status are potentially attributable to hyperglycemia, insulin resistance, and blood pressure-related variables. RESEARCH DESIGN AND METHODS We used cross-sectional data from 2,531 participants from the Maastricht Study (mean age ± SD, 60 ± 8 years; 52% men; n = 666 with type 2 diabetes), all of whom completed a neuropsychological test battery. Hyperglycemia was assessed by a composite index of fasting glucose, postload glucose, glycated hemoglobin (HbA1c), and tissue advanced glycation end products; insulin resistance by the HOMA of insulin resistance index; and blood pressure-related variables included 24-h ambulatory pressures, their weighted SDs, and the use of antihypertensive medication. Linear regression analyses were used to estimate mediating effects. RESULTS After adjustment for age, sex, and education, individuals with type 2 diabetes, compared with those with normal glucose metabolism, performed worse in all cognitive domains (mean differences in composite z scores for memory -0.087, processing speed -0.196, executive function and attention -0.182; P values <0.032), whereas individuals with prediabetes did not. Diabetes-associated differences in processing speed and executive function and attention were largely explained by hyperglycemia (mediating effect 79.6% [bootstrapped 95% CI 36.6; 123.4] and 50.3% [0.6; 101.2], respectively) and, for processing speed, to a lesser extent by blood pressure-related variables (17.7% [5.6; 30.1]), but not by insulin resistance. None of the factors explained the differences in memory function. CONCLUSIONS Our cross-sectional data suggest that early glycemic and blood pressure control, perhaps even in the prediabetic stage, may be promising therapeutic targets for the prevention of diabetes-associated decrements in cognitive performance.
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Affiliation(s)
- Stefan L C Geijselaers
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands.,Department of Neurology, Brain Centre Rudolf Magnus, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Simone J S Sep
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Danny Claessens
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Miranda T Schram
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Martin P J van Boxtel
- Department of Psychiatry and Neuropsychology and School for Mental Health and Neuroscience, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Ronald M A Henry
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Frans R J Verhey
- Department of Psychiatry and Neuropsychology and School for Mental Health and Neuroscience, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Abraham A Kroon
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Pieter C Dagnelie
- School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands.,School for Public Health and Primary Care (CAPHRI), Maastricht University, Maastricht, the Netherlands.,Department of Epidemiology, Maastricht University, Maastricht, the Netherlands
| | - Casper G Schalkwijk
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Carla J H van der Kallen
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands.,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Geert Jan Biessels
- Department of Neurology, Brain Centre Rudolf Magnus, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Coen D A Stehouwer
- Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, the Netherlands .,School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands
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82
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Generation of glucose-sensitive insulin-secreting beta-like cells from human embryonic stem cells by incorporating a synthetic lineage-control network. J Biotechnol 2017; 259:39-45. [DOI: 10.1016/j.jbiotec.2017.07.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/17/2017] [Accepted: 07/20/2017] [Indexed: 12/15/2022]
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83
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Ferro Y, Russo C, Russo D, Gazzaruso C, Coppola A, Gallotti P, Zambianchi V, Fodaro M, Romeo S, Galliera E, Marazzi MG, Romanelli MMC, Giannini S, Pujia A, Montalcini T. Association between low C-peptide and fragility fractures in postmenopausal women without diabetes. J Endocrinol Invest 2017; 40:1091-1098. [PMID: 28401528 DOI: 10.1007/s40618-017-0672-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
PURPOSE C-peptide has been shown to exert several, previously unknown, biological effects. A recent cross-sectional study demonstrated an association between low C-peptide serum levels and low lumbar bone density of postmenopausal women not affected by diabetes. To date, very little research attention has been directed toward the association between C-peptide and osteoporotic fractures. To contribute toward filling this gap, we investigated the association between C-peptide and fractures in postmenopausal women. METHODS A cohort of 133 non-diabetic postmenopausal women with and without a history of fractures was evaluated in this cross-sectional investigation. Standardized interviews were performed to gather information on the patients' fracture history. All of the participants underwent a bone mineral density assessment by DXA, radiographs, and a serum C-peptide measurement. RESULTS Thirty-four women presented fractures. Bivariate analysis revealed an inverse correlation between C-peptide and fractures (r = -0.27, p = 0.002). A significant difference in mean C-peptide levels was also found between women with vs. without fractures (p = 0.01, adjusted for age, BMI and glucose). Logistic regression analysis showed that C-peptide levels, femoral and vertebral BMD were all negatively associated with fracture status (B = -1.097, ES = 0.401, p = 0.006, 95% CI 0.15-0.73; B = -15.6, SE = 4.17, p < 0.001, CI 0.001-0.002; B = -24.8, SE = 5.23, p < 0.001, CI 0001-0.002; respectively). CONCLUSIONS This study confirms an inverse association between serum C-peptide levels and a history of fractures in postmenopausal women without diabetes. These results suggest that C-peptidemay exert an effect on bone mineral density. However, further large-scale studies are needed to corroborate this finding and investigate the potential underlying mechanisms involved.
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Affiliation(s)
- Y Ferro
- Clinical Nutrition Unit, Department of Medical and Surgical Science, University Magna Graecia, Catanzaro, 88100, Italy
| | - C Russo
- Clinical Nutrition Unit, Department of Medical and Surgical Science, University Magna Graecia, Catanzaro, 88100, Italy
| | - D Russo
- Department of Health Science, University Magna Graecia, Catanzaro, 88100, Italy
| | - C Gazzaruso
- Internal and Emergency Medicine and Centre for Applied Clinical Research (Ce.R.C.A.) Clinical Institute "Beato Matteo", Vigevano, 27029, Italy
| | - A Coppola
- Internal and Emergency Medicine and Centre for Applied Clinical Research (Ce.R.C.A.) Clinical Institute "Beato Matteo", Vigevano, 27029, Italy
| | - P Gallotti
- Internal and Emergency Medicine and Centre for Applied Clinical Research (Ce.R.C.A.) Clinical Institute "Beato Matteo", Vigevano, 27029, Italy
| | - V Zambianchi
- Internal and Emergency Medicine and Centre for Applied Clinical Research (Ce.R.C.A.) Clinical Institute "Beato Matteo", Vigevano, 27029, Italy
| | - M Fodaro
- Internal and Emergency Medicine and Centre for Applied Clinical Research (Ce.R.C.A.) Clinical Institute "Beato Matteo", Vigevano, 27029, Italy
| | - S Romeo
- Clinical Nutrition Unit, Department of Medical and Surgical Science, University Magna Graecia, Catanzaro, 88100, Italy
- Department of Molecular and Clinical Medicine, Sahlgrenska Center for Cardiovascolar and Metabolic Research, University of Gothenburg, Göteborg, 42246, Sweden
| | - E Galliera
- Department of Biomedical, Surgical and Dental Science, University of Milan and Orthopaedic Institute IRCCS Galeazzi, 20161, Milan, Italy
| | - M G Marazzi
- Department of Health Biomedical Science, University of Milan and Unit of SMEL-1 Clinical Pathology Unit, San Donato Hospital IRCCS, San Donato Milanese, 20097, Milan, Italy
| | - M M C Romanelli
- Department of Health Biomedical Science, University of Milan and Unit of SMEL-1 Clinical Pathology Unit, San Donato Hospital IRCCS, San Donato Milanese, 20097, Milan, Italy
| | - S Giannini
- Department of Medical and Surgical Sciences, University of Padova, 35128, Padua, Italy
- National Research Council, Center for Aging Studies of Padova, 35128, Padua, Italy
| | - A Pujia
- Clinical Nutrition Unit, Department of Medical and Surgical Science, University Magna Graecia, Catanzaro, 88100, Italy
| | - T Montalcini
- Menopause Clinic, Department of Clinical and Experimental Medicine, University Magna Graecia, Campus Universitario Germaneto, Viale S. Venuta, floor III, Catanzaro, 88100, Italy.
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84
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Jha JC, Banal C, Okabe J, Gray SP, Hettige T, Chow BSM, Thallas-Bonke V, De Vos L, Holterman CE, Coughlan MT, Power DA, Skene A, Ekinci EI, Cooper ME, Touyz RM, Kennedy CR, Jandeleit-Dahm K. NADPH Oxidase Nox5 Accelerates Renal Injury in Diabetic Nephropathy. Diabetes 2017; 66:2691-2703. [PMID: 28747378 DOI: 10.2337/db16-1585] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 07/18/2017] [Indexed: 11/13/2022]
Abstract
NADPH oxidase-derived excessive production of reactive oxygen species (ROS) in the kidney plays a key role in mediating renal injury in diabetes. Pathological changes in diabetes include mesangial expansion and accumulation of extracellular matrix (ECM) leading to glomerulosclerosis. There is a paucity of data about the role of the Nox5 isoform of NADPH oxidase in animal models of diabetic nephropathy since Nox5 is absent in the mouse genome. Thus, we examined the role of Nox5 in human diabetic nephropathy in human mesangial cells and in an inducible human Nox5 transgenic mouse exposed to streptozotocin-induced diabetes. In human kidney biopsies, Nox5 was identified to be expressed in glomeruli, which appeared to be increased in diabetes. Colocalization demonstrated Nox5 expression in mesangial cells. In vitro, silencing of Nox5 in human mesangial cells was associated with attenuation of the hyperglycemia and TGF-β1-induced enhanced ROS production, increased expression of profibrotic and proinflammatory mediators, and increased TRPC6, PKC-α, and PKC-β expression. In vivo, vascular smooth muscle cell/mesangial cell-specific overexpression of Nox5 in a mouse model of diabetic nephropathy showed enhanced glomerular ROS production, accelerated glomerulosclerosis, mesangial expansion, and ECM protein (collagen IV and fibronectin) accumulation as well as increased macrophage infiltration and expression of the proinflammatory chemokine MCP-1. Collectively, this study provides evidence of a role for Nox5 and its derived ROS in promoting progression of diabetic nephropathy.
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Affiliation(s)
- Jay C Jha
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
| | - Claudine Banal
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Jun Okabe
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
- Human Epigenetics Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Stephen P Gray
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Thushan Hettige
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Bryna S M Chow
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
| | - Vicki Thallas-Bonke
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Lisanne De Vos
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Chet E Holterman
- Kidney Research Centre, Department of Medicine, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Melinda T Coughlan
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
| | - David A Power
- Department of Nephrology and Institute of Breathing and Sleep, Austin Health, Heidelberg, Australia
| | - Alison Skene
- Department of Anatomical Pathology, Austin Health, Heidelberg, Australia
| | - Elif I Ekinci
- Endocrine Centre, Austin Health, Repatriation Campus, Heidelberg, Australia
| | - Mark E Cooper
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, U.K
| | - Chris R Kennedy
- Kidney Research Centre, Department of Medicine, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Karin Jandeleit-Dahm
- JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Diabetic Complications Division, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
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85
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Yatoo MI, Saxena A, Gopalakris A, Alagawany M, Dhama K. Promising Antidiabetic Drugs, Medicinal Plants and Herbs: An Update. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2017.732.745] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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86
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Liu YH, Lu YL, Liu DZ, Hou WC. Antiglycation, radical scavenging, and semicarbazide-sensitive amine oxidase inhibitory activities of acetohydroxamic acid in vitro. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:2139-2147. [PMID: 28761331 PMCID: PMC5516777 DOI: 10.2147/dddt.s141740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Advanced glycation endproducts (AGEs) can promote intracellular reactive oxygen species production, and the levels of AGEs are highly correlated with cardiovascular disease and diabetes complications. Acetohydroxamic acid (acetH) is a bacterial urease inhibitor drug used to treat kidney stones and infections in the urinary tract, and hydroxyurea (HU) is a drug used for antineoplasm and sickle cell diseases. Both acetH and HU are hydroxamic acid derivatives. It was found that acetH and HU at 2.5 or 5 mM showed anti-AGE formation by lowering the AGEs' fluorescent intensities and Nε-(carboxymethyl)lysine formation in bovine serum albumin/galactose models, and both showed better and significant differences (P<0.05) compared to the positive control of aminoguanidine. Regarding radical scavenging activities, the half-inhibition concentrations (IC50) of acetH against α,α-diphenyl-β-picrylhydrazyl radical and hydroxyl radical were 34.86 and 104.42 μM, respectively. The IC50 of acetH against semicarbazide-sensitive amine oxidase was 10.56 μM, and acetH showed noncompetitive inhibition respective to the substrates (benzylamine). The antiglycation, antioxidant, and semicarbazide-sensitive amine oxidase inhibitory activities of acetH prove that it has the potential for treating cardiovascular disease and diabetes complications and it needs further investigation in animal models.
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Affiliation(s)
- Yuh-Hwa Liu
- Division of Gastroenterology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.,Department of General Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yeh-Lin Lu
- Department of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Der-Zen Liu
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei, Taiwan
| | - Wen-Chi Hou
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan
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87
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Demirtas L, Guclu A, Erdur FM, Akbas EM, Ozcicek A, Onk D, Turkmen K. Apoptosis, autophagy & endoplasmic reticulum stress in diabetes mellitus. Indian J Med Res 2017; 144:515-524. [PMID: 28256459 PMCID: PMC5345297 DOI: 10.4103/0971-5916.200887] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The prevalence of diabetes mellitus (DM) is increasing secondary to increased consumption of food and decreased physical activity worldwide. Hyperglycaemia, insulin resistance and hypertrophy of pancreatic beta cells occur in the early phase of diabetes. However, with the progression of diabetes, dysfunction and loss of beta cells occur in both types 1 and 2 DM. Programmed cell death also named apoptosis is found to be associated with diabetes, and apoptosis of beta cells might be the main mechanism of relative insulin deficiency in DM. Autophagic cell death and apoptosis are not entirely distinct programmed cell death mechanisms and share many of the regulator proteins. These processes can occur in both physiologic and pathologic conditions including DM. Besides these two important pathways, endoplasmic reticulum (ER) also acts as a cell sensor to monitor and maintain cellular homeostasis. ER stress has been found to be associated with autophagy and apoptosis. This review was aimed to describe the interactions between apoptosis, autophagy and ER stress pathways in DM.
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Affiliation(s)
- Levent Demirtas
- Department of Internal Medicine, Erzincan University, Erzincan, Turkey
| | - Aydin Guclu
- Division of Nephrology, Kırsehir Training and Research Hospital, Kırsehir, Turkey
| | - Fatih Mehmet Erdur
- Department of Internal Medicine, Necmettin Erbakan University, Meram School of Medicine, Konya, Turkey
| | - Emin Murat Akbas
- Department of Internal Medicine, Erzincan University, Erzincan, Turkey
| | - Adalet Ozcicek
- Department of Internal Medicine, Erzincan University, Erzincan, Turkey
| | - Didem Onk
- Department of Reanimation & Anesthesiology, Erzincan University, Erzincan, Turkey
| | - Kultigin Turkmen
- Department of Internal Medicine, Necmettin Erbakan University, Meram School of Medicine, Konya, Turkey
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88
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Matsumoto T, Kobayashi S, Ando M, Watanabe S, Iguchi M, Taguchi K, Kobayashi T. Impaired endothelium-derived hyperpolarization-type relaxation in superior mesenteric arteries isolated from female Otsuka Long-Evans Tokushima Fatty rats. Eur J Pharmacol 2017; 807:151-158. [PMID: 28433656 DOI: 10.1016/j.ejphar.2017.03.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/27/2017] [Accepted: 03/31/2017] [Indexed: 01/27/2023]
Abstract
Endothelium-derived hyperpolarization (EDH) is an important signaling mechanism of endothelium-dependent vasorelaxation, and little attention has been paid to the EDH-type responses in female metabolic syndrome such as that observed with type-2 diabetes. We previously reported that EDH-type relaxation was impaired in superior mesenteric arteries from male Otsuka Long-Evans Tokushima Fatty (OLETF) rat, a model of type-2 diabetes, however, the response was unclear in female OLETF rat. Thus, the aim of this study was to examine if EDH-type relaxation was altered in superior mesenteric arteries isolated from female OLETF rats compared to age-matched, control female Long-Evans Tokushima Otsuka (LETO) rats at age 50-59 weeks. We investigated concentration-relaxation curves for acetylcholine (at age 50-53 weeks), NS309 (an activator of small- and intermediate-conductance calcium-activated potassium channels) (at age 50-53 weeks), and GSK1016790A (an agonist of transient receptor potential vanilloid type 4, TRPV4) (at age 58 or 59 weeks) in the presence of the nitric oxide synthase inhibitor NG-nitro-L-arginine and the cyclooxygenase inhibitor indomethacin to investigate EDH-type responses in the superior mesenteric artery. Obesity, mild hyperglycemia, hyperinsulinemia, and hyperlipidemia (i.e., increased total cholesterol, triglyceride, and non-esterified fatty acids) were more frequent in OLETF rats than in age-matched LETO rats at age 50-53 weeks. Acetylcholine-, NS309-, and GSK1016790A-induced relaxations in arteries from OLETF rats were all significantly reduced compared to those in LETO rats. These results indicated that EDH-type relaxations were impaired in female OLETF rats. This novel experimental model may provide new insights into vascular dysfunction in metabolic syndrome in females.
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Affiliation(s)
- Takayuki Matsumoto
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Shota Kobayashi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Makoto Ando
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Shun Watanabe
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Maika Iguchi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Kumiko Taguchi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Tsuneo Kobayashi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan.
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89
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Inhibition of Cardiac Hypertrophy Effects in D-Galactose-Induced Senescent Hearts by Alpinate Oxyphyllae Fructus Treatment. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:2624384. [PMID: 28479925 PMCID: PMC5396449 DOI: 10.1155/2017/2624384] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 09/14/2016] [Accepted: 03/16/2017] [Indexed: 12/17/2022]
Abstract
Aging is a complex physiological phenomenon accelerated by ROS accumulation, with multisystem decline and increasing vulnerability to degenerative diseases and death. Cardiac hypertrophy is a key pathophysiological component that accompanies the aging process. Alpinate Oxyphyllae Fructus (Alpinia oxyphylla MIQ, AOF) is a traditional Chinese medicine, which provides cardioprotective activity against aging, hypertension, and cerebrovascular disorders. In this study, we found the protective effect of AOF against cardiac hypertrophy in D-galactose-induced aging rat model. The results showed that treating rats with D-galactose resulted in pathological hypertrophy as evident from the morphology change, increased left ventricular weight/whole heart weight, and expression of hypertrophy-related markers (MYH7 and BNP). Both concentric and eccentric cardiac hypertrophy signaling proteins were upregulated in aging rat model. However, these pathological changes were significantly improved in AOF treated group (AM and AH) in a dose-dependent manner. AOF negatively modulated D-galactose-induced cardiac hypertrophy signaling mechanism to attenuate ventricular hypertrophy. These enhanced cardioprotective activities following oral administration of AOF reflect the potential use of AOF for antiaging treatments.
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90
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Goru SK, Kadakol A, Gaikwad AB. Hidden targets of ubiquitin proteasome system: To prevent diabetic nephropathy. Pharmacol Res 2017; 120:170-179. [PMID: 28363724 DOI: 10.1016/j.phrs.2017.03.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 03/21/2017] [Indexed: 12/21/2022]
Abstract
Diabetic nephropathy (DN) is the major cause of end stage renal failure. Although, several therapeutic targets have emerged to prevent the progression of DN, the number of people with DN still continues to rise worldwide, suggesting an urgent need of novel targets to prevent DN completely. Currently, the role of ubiquitin proteasome system (UPS) has been highlighted in the pathogenesis and progression of various diseases like obesity, insulin resistance, atherosclerosis, cancers, neurodegerative disorders and including secondary complications of diabetes. UPS mainly involves in protein homeostatis through ubiquitination (post translational modification) and proteasomal degradation of various proteins. Ubiquitination, not only involves in proteasomal degradation, but also directs the substrate proteins to participate in multitude of cell signalling pathways. However, very little is known about ubiquitination and UPS in the progression of DN. This review mainly focuses on UPS and its components including E2 conjugating enzymes, E3 ligases and deubiquitinases (DUBs) in the development of DN and thus may help us to find novel therapeutic targets with in UPS to prevent DN completely in future.
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Affiliation(s)
- Santosh Kumar Goru
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Almesh Kadakol
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Anil Bhanudas Gaikwad
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India.
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91
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Affiliation(s)
- Ting Yuan
- a Centre for Biomolecular Interactions Bremen , University of Bremen , Bremen , Germany
| | - Kathrin Maedler
- a Centre for Biomolecular Interactions Bremen , University of Bremen , Bremen , Germany
| | - Amin Ardestani
- a Centre for Biomolecular Interactions Bremen , University of Bremen , Bremen , Germany
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92
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Russo C, Lazzaro V, Gazzaruso C, Maurotti S, Ferro Y, Pingitore P, Fumo F, Coppola A, Gallotti P, Zambianchi V, Fodaro M, Galliera E, Marazzi MG, Corsi Romanelli MM, Giannini S, Romeo S, Pujia A, Montalcini T. Proinsulin C-peptide modulates the expression of ERK1/2, type I collagen and RANKL in human osteoblast-like cells (Saos-2). Mol Cell Endocrinol 2017; 442:134-141. [PMID: 28007656 DOI: 10.1016/j.mce.2016.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/07/2016] [Accepted: 12/12/2016] [Indexed: 12/29/2022]
Abstract
A lower bone mass accompanied by a higher bone fragility with increased risk of fracture are observed in individuals with type 1 diabetes mellitus. Low C-peptide levels are associated with low lumbar mineral density in postmenopausal woman. In this work, we investigated the role of C-peptide on the osteoblast cell biology in vitro. We examined intracellular pathways and we found that C peptide activates ERK1/2 in human osteoblast-like cells (Saos-2). We also observed that proinsulin C-peptide prevents a reduction of type I collagen expression and decreases, in combination with insulin, receptor activator of nuclear factor-κB (RANKL) levels. In this work we show for the first time that Cpeptide activates a specific intracellular pathway in osteoblasts and it modulates the expression of protein involved in bone remodeling. Our results suggest that both C-peptide may have a role in bone metabolism. Further studies are needing to fully clarify its role.
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Affiliation(s)
- Cristina Russo
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Veronica Lazzaro
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Carmine Gazzaruso
- Internal and Emergency Medicine, and Ce.R.C.A. Clinical Institute "Beato Matteo", Vigevano, Italy
| | - Samantha Maurotti
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Yvelise Ferro
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Piero Pingitore
- Department of Molecular and Clinical Medicine, University of Gothenburg, Sweden
| | - Francesca Fumo
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Adriana Coppola
- Internal and Emergency Medicine, and Ce.R.C.A. Clinical Institute "Beato Matteo", Vigevano, Italy
| | - Pietro Gallotti
- Internal and Emergency Medicine, and Ce.R.C.A. Clinical Institute "Beato Matteo", Vigevano, Italy
| | - Valentina Zambianchi
- Internal and Emergency Medicine, and Ce.R.C.A. Clinical Institute "Beato Matteo", Vigevano, Italy
| | - Mariangela Fodaro
- Internal and Emergency Medicine, and Ce.R.C.A. Clinical Institute "Beato Matteo", Vigevano, Italy
| | - Emanuela Galliera
- Department of Biomedical, Surgical and Dental Science, University of Milan, Italy
| | | | | | - Sandro Giannini
- Department of Medical and Surgical Sciences, University of Padova, Italy
| | - Stefano Romeo
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy; Department of Molecular and Clinical Medicine, University of Gothenburg, Sweden
| | - Arturo Pujia
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Tiziana Montalcini
- Department of Clinical and Experimental Medicine, University "Magna Graecia" of Catanzaro, Italy.
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93
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Du T, Lu S, Jiang Q, Li Y, Ma K. Quantitative Proteomic Analysis of Hepatic Tissue of T2DM Rhesus Macaque. J Diabetes Res 2017; 2017:3601708. [PMID: 29404372 PMCID: PMC5748286 DOI: 10.1155/2017/3601708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/09/2017] [Indexed: 12/19/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder that severely affects human health, but the pathogenesis of the disease remains unknown. The high-fat/high-sucrose diets combined with streptozotocin- (STZ-) induced nonhuman primate animal model of diabetes are a valuable research source of T2DM. Here, we present a study of a STZ rhesus macaque model of T2DM that utilizes quantitative iTRAQ-based proteomic method. We compared the protein profiles in the liver of STZ-treated macaques as well as age-matched healthy controls. We identified 171 proteins differentially expressed in the STZ-treated groups, about 70 of which were documented as diabetes-related gene in previous studies. Pathway analyses indicated that the biological functions of differentially expressed proteins were related to glycolysis/gluconeogenesis, fatty acid metabolism, complements, and coagulation cascades. Expression change in tryptophan metabolism pathway was also found in this study which may be associations with diabetes. This study is the first to explore genome-wide protein expression in hepatic tissue of diabetes macaque model using HPLC-Q-TOF/MS technology. In addition to providing potential T2DM biomarkers, this quantitative proteomic study may also shed insights regarding the molecular pathogenesis of T2DM.
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Affiliation(s)
- Tingfu Du
- Center for Drug Safety Evaluation and Research, Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
- Medical Primate Research Center & Neuroscience Center, Chinese Academy of Medical Sciences, Beijing 100005, China
- Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Diseases, Kunming 650118, China
| | - Shuaiyao Lu
- Center for Drug Safety Evaluation and Research, Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
- Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Diseases, Kunming 650118, China
| | - Qinfang Jiang
- Center for Drug Safety Evaluation and Research, Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
- Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Diseases, Kunming 650118, China
| | - Yun Li
- Center for Drug Safety Evaluation and Research, Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
- Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Diseases, Kunming 650118, China
| | - Kaili Ma
- Center for Drug Safety Evaluation and Research, Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
- Medical Primate Research Center & Neuroscience Center, Chinese Academy of Medical Sciences, Beijing 100005, China
- Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Diseases, Kunming 650118, China
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94
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Liu N, Xu L, Shi Y, Zhuang S. Podocyte Autophagy: A Potential Therapeutic Target to Prevent the Progression of Diabetic Nephropathy. J Diabetes Res 2017; 2017:3560238. [PMID: 28512641 PMCID: PMC5420432 DOI: 10.1155/2017/3560238] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 02/20/2017] [Indexed: 01/08/2023] Open
Abstract
Diabetic nephropathy (DN), a leading cause of end-stage renal disease (ESRD), becomes a worldwide problem. Ultrastructural changes of the glomerular filtration barrier, especially the pathological changes of podocytes, lead to proteinuria in patients with diabetes. Podocytes are major components of glomerular filtration barrier, lining outside of the glomerular basement membrane (GBM) to maintain the permeability of the GBM. Autophagy is a high conserved cellular process in lysosomes including impaired protein, cell organelles, and other contents in the cytoplasm. Recent studies suggest that activation of autophagy in podocytes may be a potential therapy to prevent the progression of DN. Here, we review the mechanisms of autophagy in podocytes and discuss the current studies about alleviating proteinuria via activating podocyte autophagy.
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Affiliation(s)
- Na Liu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liuqing Xu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yingfeng Shi
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shougang Zhuang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI, USA
- *Shougang Zhuang:
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95
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Liu JW, Luo Y, Wang YM, Duan LY, Jiang JH, Yu RQ. Graphitic Carbon Nitride Nanosheets-Based Ratiometric Fluorescent Probe for Highly Sensitive Detection of H 2O 2 and Glucose. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33439-33445. [PMID: 27960386 DOI: 10.1021/acsami.6b11207] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Graphitic carbon nitride (g-C3N4) nanosheets, an emerging graphene-like carbon-based nanomaterial with high fluorescence and large specific surface areas, hold great potential for biosensor applications. Current g-C3N4 nanosheets based fluorescent biosensors majorly rely on single fluorescent intensity reading through fluorescence quenching interactions between the nanosheets and metal ions. Here we report for the first time the development of a novel g-C3N4 nanosheets-based ratiometric fluorescence sensing strategy for highly sensitive detection of H2O2 and glucose. With o-phenylenediamine (OPD) oxidized by H2O2 in the presence of horseradish peroxidase (HRP), the oxidization product can assemble on the g-C3N4 nanosheets through hydrogen bonding and π-π stacking, which effectively quenches the fluorescence of g-C3N4 while delivering a new emission peak. The ratiometric signal variations enable robust and sensitive detection of H2O2. On the basis of the glucose converting into H2O2 through the catalysis of glucose oxidase, the g-C3N4-based ratiometric fluorescence sensing platform is also exploited for glucose assay. The developed strategy is demonstrated to give a detection limit of 50 nM for H2O2 and 0.4 μM for glucose, at the same time, it has been successfully used for glucose levels detection in human serum. This strategy may provide a cost-efficient, robust, and high-throughput platform for detecting various species involving H2O2-generation reactions for biomedical applications.
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Affiliation(s)
- Jin-Wen Liu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
| | - Ying Luo
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
| | - Yu-Min Wang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
| | - Lu-Ying Duan
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
| | - Jian-Hui Jiang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
| | - Ru-Qin Yu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
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96
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Dong L, Bai J, Jiang X, Yang MM, Zheng Y, Zhang H, Lin D. The gene polymorphisms of IL-8(-251T/A) and IP-10(-1596C/T) are associated with susceptibility and progression of type 2 diabetic retinopathy in northern Chinese population. Eye (Lond) 2016; 31:601-607. [PMID: 27935598 DOI: 10.1038/eye.2016.287] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/07/2016] [Indexed: 10/20/2022] Open
Abstract
PurposeThe aim of the present study is to investigate the association of the polymorphism of two genes in CXC chemokine family, interleukin-8 (IL-8) and interferon-inducible protein 10 (IP-10), with both susceptibility and progression of DR in T2D population of northern China.Patients and methodsA total of 1043 eligible type 2 diabetic patients from Heilongjiang of northern China were recruited for this study. They were grouped into: with diabetic retinopathy (DR, 528 cases) and without diabetic retinopathy (DNR, 515 cases). Single nucleotide polymorphism (SNP) genotyping of IL-8(-251T/A) and IP-10(-1596C/T) was performed by polymerase chain reaction. Multivariate analysis and stepwise multiple logistic progression analysis were conducted to evaluate the association between gene SNP and DR susceptibility and progression. Pooled odds ratio (OR) with 95% confidence interval (CI) was applied to assess the strength of the association among study groups.ResultsThe occurring of IL-8(-251) AA genotype was correlated with susceptibility (OR: 2.286, 95% CI: 1.382-3.782, P=0.001) and progression of high-risk proliferative diabetic retinopathy (PDR) (OR: 0.354, 95% CI: 0.162-0.770, P=0.009). Reversely, T allele of IP-10 (-1596) C/T was correlated with a reduced risk of DR (OR: 0.341, 95% CI: 0.249-0.466, P<0.001). However, gene polymorphisms of IL-8-251T/A and IP-10-1596C/T were not associated with diabetic macular edema (DME)(P>0.05).ConclusionsAA genotype of IL-8-251T/A was closely correlated to DR and high-risk proliferative diabetic retinopathy (PDR). -1596T allele of the IP-10 is a beneficial genotype for DR.
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Affiliation(s)
- L Dong
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Bai
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Jiang
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - M-M Yang
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Zheng
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Zhang
- Key Laboratory of Harbin Medical University Eye Center in Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - D Lin
- Department of Pharmacology, New York Medical College, Valhalla, NY, USA
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97
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Samarghandian S, Azimi-Nezhad M, Farkhondeh T. Crocin attenuate Tumor Necrosis Factor-alpha (TNF-α) and interleukin-6 (IL-6) in streptozotocin-induced diabetic rat aorta. Cytokine 2016; 88:20-28. [DOI: 10.1016/j.cyto.2016.08.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 07/30/2016] [Accepted: 08/02/2016] [Indexed: 12/22/2022]
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98
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Abstract
This study was conducted to investigate how far dietary zinc (Zn) modifies the histomorphological alterations induced by diabetes in rat kidneys. The animals were divided into negative control group (10 rats). Diabetes was induced in thirty animals by streptozotocin. After confirming diabetes, the animals were divided into three groups (n = 10). Group II served as the positive control group (fed on standard diet), group III was fed on Zn deficient diet, and group IV was fed on Zn supplemented diet. Caspase-3 immune staining was used to estimate the caspase activity. Stereological procedures were used to measure the quantity of the immune stain and the surface area of the Bowman’s space. The renal cortices of group II rats revealed apparent widening of Bowman’s spaces with few apoptotic figures. The filtration barrier showed thickening of the basement membrane. The proximal convoluted tubules showed patchy loss of the apical microvilli with swollen mitochondria. The distal convoluted tubules revealed area of irregular basal enfolding. The picture was aggravated by Zn deficiency in group III besides areas of cortical interstitial fibrosis. The histopathological alterations were minimal in the cortices of group IV. A significant increase of the Bowman’s space surface area in group II and IV while decrease in group III compared with group I. The expression of Caspase-3 density was significantly increased in group II and III compared with group I while in group IV was non significant. In conclusion, dietary Zn modulated renal cortical changes caused by diabetes in rats.
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Affiliation(s)
- Wael M Elsaed
- a Anatomy & Embryology Department , Faculty of Medicine, Taibah University , Madinah , Saudi Arabia.,b Anatomy & Embryology Department , Faculty of Medicine, Mansoura University , Mansoura , Egypt
| | - Hazem Abdelhamid Mohamed
- a Anatomy & Embryology Department , Faculty of Medicine, Taibah University , Madinah , Saudi Arabia.,c Anatomy &Embryology Department , Faculty of Medicine, Assiut University , Assiut , Egypt
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Salim HM, Fukuda D, Yagi S, Soeki T, Shimabukuro M, Sata M. Glycemic Control with Ipragliflozin, a Novel Selective SGLT2 Inhibitor, Ameliorated Endothelial Dysfunction in Streptozotocin-Induced Diabetic Mouse. Front Cardiovasc Med 2016; 3:43. [PMID: 27833913 PMCID: PMC5080286 DOI: 10.3389/fcvm.2016.00043] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 10/10/2016] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Endothelial dysfunction caused by increased oxidative stress is a critical initiator of macro- and micro-vascular disease development in diabetic patients. Ipragliflozin, a selective sodium-glucose cotransporter 2 (SGLT2) inhibitor, offers a novel approach for the treatment of diabetes by enhancing urinary glucose excretion. The aim of this study was to examine whether ipragliflozin attenuates endothelial dysfunction in diabetic mice. METHODS Eight-week-old male C57BL/6 mice were treated with streptozotocin (150 mg/kg) by a single intraperitoneal injection to induce diabetes mellitus. At 3 days of injection, ipragliflozin (3 mg/kg/day) was administered via gavage for 3 weeks. Vascular function was assessed by isometric tension recording. Human umbilical vein endothelial cells (HUVEC) were used for in vitro experiments. RNA and protein expression were examined by quantitative RT-PCR (qPCR) and western blot, respectively. Oxidative stress was determined by measuring urine 8-hydroxy-2'-deoxyguanosine (8-OHdG) level. RESULTS Ipragliflozin administration significantly reduced blood glucose level (P < 0.001) and attenuated the impairment of endothelial function in diabetic mice, as determined by acetylcholine-dependent vasodilation (P < 0.001). Ipragliflozin did not alter metabolic parameters, such as body weight and food intake. Ipragliflozin administration ameliorated impaired phosphorylation of Akt and eNOSSer1177 in the abdominal aorta and reduced reactive oxygen species generation as determined by urinary excretion of 8-OHdG in diabetic mice. Furthermore, qPCR analyses demonstrated that ipragliflozin decreased the expression of inflammatory molecules [e.g., monocyte chemoattractant protein-1 (MCP-1) vascular cell adhesion molecule-1 (VCAM-1), and intercellular adhesion molecule (ICAM)-1] in the abdominal aorta (P < 0.05). In in vitro studies, incubation with methylglyoxal, one of the advanced glycation end products, significantly impaired phosphorylation of Akt and eNOSSer1177 (P < 0.01) and increased the expression of MCP-1, VCAM-1, and ICAM-1 in HUVEC. CONCLUSION Ipragliflozin improved hyperglycemia and prevented the development of endothelial dysfunction under a hyperglycemic state, at least partially by attenuation of oxidative stress.
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Affiliation(s)
- Hotimah Masdan Salim
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Shusuke Yagi
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Takeshi Soeki
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Michio Shimabukuro
- Department of Cardio-Diabetes Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Masataka Sata
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
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Immunomodulatory and antioxidant effects of saffron aqueous extract (Crocus sativus L.) on streptozotocin-induced diabetes in rats. Indian Heart J 2016; 69:151-159. [PMID: 28460761 PMCID: PMC5414951 DOI: 10.1016/j.ihj.2016.09.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/13/2016] [Accepted: 09/20/2016] [Indexed: 12/20/2022] Open
Abstract
Introduction Crocus sativus L. (saffron) has many biological effects such as antioxidant property. The present study investigated the immunomodulatory effects of the aqueous saffron extract on streptozotocin (STZ)-induced diabetic rats. Materials and methods In this study, the rats were divided into the following groups of 9 animals each: control, untreated diabetic, three saffron extract-treated diabetic groups. Diabetes was induced by STZ in rats. Saffron was administered 3 days after STZ administration; these injections were continued to the end of the study (4 weeks). At the end of the 4-week period, blood was drawn for biochemical assays and the abdominal aorta was removed for detecting the inflammatory cytokines expression. Results We found that saffron decreased blood glucose, malondialdehyde, nitric oxide, total lipids, triglycerides, cholesterol levels significantly (p < 0.01) and increased glutathione level, catalase, and superoxide dismutase activities in the saffron-treated diabetic groups compared with the untreated groups, in a dose dependent manner (p < 0.05, p < 0.01, p < 0.001). On the other hand, saffron-treated diabetic rats inhibited the expression of inflammatory cytokines in the abdominal aorta versus the untreated diabetic rats. Conclusion Our results validate the use of saffron as a treatment against diabetes mellitus and its vascular complications.
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