1
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Ural C, Celik A, Ozbal S, Guneli E, Arslan S, Ergur BU, Cavdar C, Akdoğan G, Cavdar Z. The renoprotective effects of taurine against diabetic nephropathy via the p38 MAPK and TGF-β/Smad2/3 signaling pathways. Amino Acids 2023; 55:1665-1677. [PMID: 37805666 DOI: 10.1007/s00726-023-03342-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 09/20/2023] [Indexed: 10/09/2023]
Abstract
Diabetic nephropathy (DN), a severe diabetes complication, causes kidney morphological and structural changes due to extracellular matrix accumulation. This accumulation is caused mainly by oxidative stress. Semi-essential amino acid derivative taurine has powerful antioxidant and antifibrotic effects. The aim of this study was to investigate the renoprotective effects of taurine through its possible roles in oxidative stress, extracellular matrix proteins, and the signaling pathways associated with the accumulation of extracellular matrix proteins in DN rats. 29 Wistar albino rats were randomly separated into control, taurine, diabetes, and diabetes + taurine groups. Diabetes animals were injected 45 mg/kg streptozosine. Taurine is given by adding to drinking water as 1% (w/v). Urine, serum, and kidney tissue were collected from rats for biochemical and histological analysis after 12 weeks. According to the studies, taurine significantly reduces the levels of malondialdehyde (MDA), total oxidant status (TOS), and protein expression of NADPH oxidase 4 (NOX4) that increase in diabetic kidney tissue. Also, decreased superoxide dismutase (SOD) activity levels significantly increased with taurine in diabetic rats. Moreover, increased mRNA and protein levels of fibronectin decreased with taurine. The matrix metalloproteinase (MMP)-2 and MMP-9 activities and their mRNA levels increased significantly, and this increase was significantly summed with taurine. There was a decrease in mRNA expression of Extracellular matrix metalloproteinase inducer (EMMPRIN). Taurine significantly increased this decrease. Diabetes increased mRNA expressions of transforming growth factor (TGF)-β and Smad2/3. Taurine significantly reduced this induction. TGF-β protein expression, p38, and Smad2/3 activations were also inhibited, but taurine was suppressed significantly. All these findings indicate that taurine may be an effective practical strategy to prevent renal diabetic injury.
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Affiliation(s)
- Cemre Ural
- Department of Molecular Medicine, Health Sciences Institute, Dokuz Eylul University, 35340, Izmir, Turkey
| | - Asli Celik
- Multidisciplinary Experimental Animal Laboratory, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Seda Ozbal
- Department of Histology and Embryology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ensari Guneli
- Multidisciplinary Experimental Animal Laboratory, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
- Department of Laboratory Animal Science, Health Sciences Institute, Dokuz Eylul University, Izmir, Turkey
| | - Sevki Arslan
- Department of Biology, Faculty of Science, Pamukkale University, Denizli, Turkey
| | - Bekir Ugur Ergur
- Department of Histology and Embryology, University of Kyrenia, Kyrenia, Northern Cyprus
| | - Caner Cavdar
- Department of Nephrology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Gül Akdoğan
- Department of Medical Biochemistry, School of Medicine, Izmir University of Economics, Izmir, Turkey
| | - Zahide Cavdar
- Department of Molecular Medicine, Health Sciences Institute, Dokuz Eylul University, 35340, Izmir, Turkey.
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2
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Kashio A, Yamada C, Yasuhara K, Kamogashira T, Someya S, Yamasoba T. Taurine, Coenzyme Q 10, and Hydrogen Water Prevents Germanium Dioxide-Induced Mitochondrial Dysfunction and Associated Sensorineural Hearing Loss in mouse. Hear Res 2023; 428:108678. [PMID: 36577362 DOI: 10.1016/j.heares.2022.108678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 11/26/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Mitochondrial dysfunction has been implicated in numerous common diseases as well as aging and plays an important role in the pathogenesis of sensorineural hearing loss (SNHL). In the current study, we showed that supplementation with germanium dioxide (GeO2) in CBA/J mice resulted in SNHL due to the degeneration of the stria vascularis and spiral ganglion, which were associated with down-regulation of mitochondrial respiratory chain associated genes and up-regulation in apoptosis associated genes in the cochlea. Supplementation with taurine, coenzyme Q10, or hydrogen-rich water, attenuated the cochlear degeneration and associated SNHL induced by GeO2. These results suggest that daily supplements or consumption of antioxidants, such as taurine, coenzyme Q10, and hydrogen-rich water, may be a promising intervention to slow SNHL associated with mitochondrial dysfunction.
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Affiliation(s)
- Akinori Kashio
- Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Chikako Yamada
- Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Kazuo Yasuhara
- Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Teru Kamogashira
- Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Shinichi Someya
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida, United States of America
| | - Tatsuya Yamasoba
- Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan.
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3
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Ma J, Yang Z, Jia S, Yang R. A systematic review of preclinical studies on the taurine role during diabetic nephropathy: focused on anti-oxidative, anti-inflammation, and anti-apoptotic effects. Toxicol Mech Methods 2022; 32:420-430. [PMID: 34933643 DOI: 10.1080/15376516.2021.2021579] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetic nephropathy is one of the most important and growing diseases globally and the leading cause of cardiovascular mortality in these patients. Taurine is an amino acid that has pleiotropic protective properties on some diseases. This study aimed to investigate the potential role of taurine in the treatment of diabetes-induced nephropathy. To achieve the aim of the present study, a comprehensive systematic search based on PRISMA guidelines has been conducted up to August 2021. A total of 382 articles were found in the electronic databases based on search keywords. After doing the screening, 14 articles were included in the present systematic review. The dated demonstrated elevation of oxidative stress, inflammatory and apoptotic pathways, and changes in other molecules' function plays an essential role in diabetes-induced renal tissue damage. Due to its multiple protective effects, taurine significantly prevented the activation of the pathways mentioned above and altered the function of molecules involved in these pathways, resulting in alleviating diabetic nephropathy. According to the obtained results, it was found that taurine can mitigate diabetes-induced nephropathy, mainly through its anti-oxidant activity, which is an essential factor in activating inflammation and apoptosis pathways.
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Affiliation(s)
- Jingru Ma
- Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Zecheng Yang
- Department of Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Shengnan Jia
- Department of Hepatopancreatobiliary Medicine, The Second Hospital of Jilin University, Changchun, China
| | - Rui Yang
- Department of Gastroenterology, The Second Hospital of Jilin University, Changchun, China
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4
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Linnan B, Yanzhe W, Ling Z, Yuyuan L, Sijia C, Xinmiao X, Fengqin L, Xiaoxia W. In situ Metabolomics of Metabolic Reprogramming Involved in a Mouse Model of Type 2 Diabetic Kidney Disease. Front Physiol 2021; 12:779683. [PMID: 34916961 PMCID: PMC8670437 DOI: 10.3389/fphys.2021.779683] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/10/2021] [Indexed: 01/03/2023] Open
Abstract
The in situ metabolic profiling of the kidney is crucial to investigate the complex metabolic reprogramming underlying diabetic kidney disease (DKD) and to allow exploration of potential metabolic targets to improve kidney function. However, as the kidney is a highly heterogeneous organ, traditional metabolomic methods based on bulk analysis that produce an averaged measurement are inadequate. Herein, we employed an in situ metabolomics approach to discover alternations of DKD-associated metabolites and metabolic pathways. A series of histology-specific metabolic disturbances were discovered in situ using airflow-assisted desorption electrospray ionization mass spectrometry imaging (AFADESI-MSI). In combination with integrated metabolomics analysis, five dysfunctional metabolic pathways were identified and located in the kidneys of type-2 DKD mice simultaneously for the first time, including taurine metabolism, arginine and proline metabolism, histidine metabolism, biosynthesis of unsaturated fatty acids, and fatty acid degradation pathways. As crucial nodes of metabolic pathways, five dysregulated rate-limiting enzymes related to altered metabolic pathways were further identified. These findings reveal alternations from metabolites to enzymes at the molecular level in the progression of DKD and provide insights into DKD-associated metabolic reprogramming.
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Affiliation(s)
- Bai Linnan
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wang Yanzhe
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhang Ling
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liu Yuyuan
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chen Sijia
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xie Xinmiao
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Fengqin
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wang Xiaoxia
- Department of Nephrology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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l-Carnosine and Taurine Supplementation Attenuates the Intensity of Diabetes in Alloxan-Induced Diabetic Male Albino Rats. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10208-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Baliou S, Adamaki M, Ioannou P, Pappa A, Panayiotidis MI, Christodoulou I, Spandidos DA, Kyriakopoulos AM, Zoumpourlis V. Ameliorative effect of taurine against diabetes and renal-associated disorders (Review). MEDICINE INTERNATIONAL 2021; 1:3. [PMID: 36699147 PMCID: PMC9855276 DOI: 10.3892/mi.2021.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/25/2021] [Indexed: 01/28/2023]
Abstract
To develop novel therapeutic methods for both diabetic and renal disorders, scientists had initially focused on elucidating the molecular mechanisms of taurine in established cell lines and mouse models. Although a large amount of data have been revealed, taurine has been confirmed to be the next step of novel promising therapeutic interventions against diabetic disorders. Taurine appears to ameliorate diabetes 1-related complications in various organs through its antioxidant, anti-inflammatory and anti-hormonal actions. In type 2 diabetes, taurine has been positively implicated in glucose homeostasis, exerting potent hypoglycemic, anti-obesity, hypotensive and hypolipidemic effects. Of particular interest is that taurine provides protection against renal dysfunction, including hypertension and proteinuria, specific glomerular and tubular disorders, acute and chronic renal conditions, and diabetic nephropathy. The ameliorative effects of taurine against renal disorders are based on its osmoregulatory properties, its association with signaling pathways and its association with the renin-angiotensin-aldosterone system (RAAS). Further clinical studies are required to ensure the importance of research findings.
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Affiliation(s)
- Stella Baliou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Maria Adamaki
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Petros Ioannou
- Department of Internal Medicine and Infectious Diseases, University Hospital of Heraklion, 71110 Heraklion, Greece
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Faculty of Health Sciences, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Mihalis I. Panayiotidis
- Department of Cancer Genetics, Therapeutics and Ultrastructural Pathology, The Cyprus Institute of Neurology and Genetics, 2371 Nicosia, Cyprus,Cyprus School of Molecular Medicine, 2371 Nicosia, Cyprus
| | - Ioannis Christodoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71409 Heraklion, Greece
| | | | - Vassilis Zoumpourlis
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece,Correspondence to: Dr Vassilis Zoumpourlis, Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vas. Konstantinou Avenue, 11635 Athens, Greece
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7
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Hyeon JS, Jung Y, Lee G, Ha H, Hwang GS. Urinary Metabolomic Profiling in Streptozotocin-Induced Diabetic Mice after Treatment with Losartan. Int J Mol Sci 2020; 21:ijms21238969. [PMID: 33255934 PMCID: PMC7730544 DOI: 10.3390/ijms21238969] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 12/27/2022] Open
Abstract
Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease and end-stage kidney disease. Renin-angiotensin system inhibitors such as losartan are the predominant therapeutic options in clinical practice to treat DKD. Therefore, it is necessary to identify DKD-related metabolic profiles that are affected by losartan. To investigate the change in metabolism associated with the development of DKD, we performed global and targeted metabolic profiling using 800 MHz nuclear magnetic resonance spectroscopy of urine samples from streptozotocin-induced diabetic mice (DM) with or without losartan administration. A principal component analysis plot showed that the metabolic pattern in the losartan-treated diabetic mice returned from that in the DM group toward that in the control mice (CM). We found that 33 urinary metabolites were significantly changed in DM compared with CM, and the levels of 16 metabolites among them, namely, glucose, mannose, myo-inositol, pyruvate, fumarate, 2-hydroxyglutarate, isobutyrate, glycine, threonine, dimethylglycine, methyldantoin, isoleucine, leucine, acetylcarnitine, 3-hydroxy-3-methylglutarate, and taurine, shifted closer to the control level in response to losartan treatment. Pathway analysis revealed that these metabolites were associated with branched-chain amino acid degradation; taurine and hypotaurine metabolism; glycine, serine, and threonine metabolism; the tricarboxylic acid cycle; and galactose metabolism. Our results demonstrate that metabolomic analysis is a useful tool for identifying the metabolic pathways related to the development of DKD affected by losartan administration and may contribute to the discovery of new therapeutic agents for DKD.
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Affiliation(s)
- Jin Seong Hyeon
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Korea; (J.S.H.); (Y.J.)
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
| | - Youngae Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Korea; (J.S.H.); (Y.J.)
| | - Gayoung Lee
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
- Correspondence: (H.H.); (G.-S.H.)
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Korea; (J.S.H.); (Y.J.)
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
- Correspondence: (H.H.); (G.-S.H.)
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8
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Shao M, Lu H, Yang M, Liu Y, Yin P, Li G, Wang Y, Chen L, Chen Q, Zhao C, Lu Q, Wu T, Ji G. Serum and urine metabolomics reveal potential biomarkers of T2DM patients with nephropathy. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:199. [PMID: 32309346 PMCID: PMC7154445 DOI: 10.21037/atm.2020.01.42] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Background Diabetes is a metabolic disease and is often accompanied by severe microvascular and macrovascular complications. A comprehensive understanding of its complex mechanisms can help prevent type 2 diabetes mellitus (T2DM) complications, such as diabetic nephropathy (DN). Methods To reveal the systemic metabolic changes related to renal injury, clinical information of T2DM patients with or without nephropathy was collected, and it was found that serum urea levels of DN patients were significantly higher in T2DM patients without nephropathy. Further along the disease progression, the serum urea levels also gradually increased. We used gas chromatograph coupled with time-of-flight mass spectrometry (GC-TOFMS) metabolomics to analyze the serum and urine metabolites of T2DM patients with or without nephropathy to study the metabolic changes associated with the disease. Results Finally, we identified 61 serum metabolites and 46 urine metabolites as potential biomarkers related to DN (P<0.05, VIP >1). In order to determine which metabolic pathways were major altered in DN, we summarized pathway analysis based on P values from their impact values and enrichment. There were 9 serum metabolic pathways and 12 urine metabolic pathways with significant differences in serum and urine metabolism, respectively. Conclusions This study emphasizes that GC-TOFMS-based metabolomics provides insight into the potential pathways in the pathogenesis and progression of DN.
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Affiliation(s)
- Mingmei Shao
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.,Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Hao Lu
- Department of Endocrinology and Metabolism, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ming Yang
- Department of Good Clinical Practice Office, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Yang Liu
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Peihao Yin
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Guowen Li
- Pharmacy Department, Shanghai TCM-integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Yunman Wang
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Lin Chen
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Qingguang Chen
- Department of Endocrinology and Metabolism, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Cheng Zhao
- Pharmacy Department, Shanghai TCM-integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Qun Lu
- Pharmacy Department, Shanghai TCM-integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Tao Wu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.,Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Guang Ji
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
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Tao S, Zheng W, Liu Y, Li L, Li L, Ren Q, Shi M, Liu J, Jiang J, Ma H, Huang Z, Xia Z, Pan J, Wei T, Wang Y, Li P, Lan T, Ma L, Fu P. Analysis of serum metabolomics among biopsy-proven diabetic nephropathy, type 2 diabetes mellitus and healthy controls. RSC Adv 2019; 9:18713-18719. [PMID: 35516902 PMCID: PMC9064812 DOI: 10.1039/c9ra01561b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/10/2019] [Indexed: 02/05/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) has a rising prevalence and diabetic nephropathy (DN) is a major complication of T2DM. Metabolomics could provide novel insights into the pathogenesis, so we aimed to explore serum metabolomic profiles from DN to T2DM. Serum samples were collected from 14 biopsy-proven DNs, 14 age/gender-matched T2DMs without renal diseases (DM), 14 age/gender-matched healthy controls (CTRL) and household contacts of DM group (HH). Serum metabolomics was analyzed by untargeted liquid chromatography-tandem mass spectrometry (LC/MS) assays. There were a total of 1470 metabolites identified from all serum samples. 45 metabolites with significantly different intensity were found between DN and DM, e.g., biliverdin and taurine were reduced while l-arginine was increased in DN comparing to DM. DN could be distinguished from age/gender matched DM patients by l-arginine (AUC = 0.824) or taurine levels (AUC = 0.789). The metabolic pathways affected by metabolite distinctions between DN and DM also existed, among which taurine and hypotaurine metabolism exhibited the highest pathway impact. l-Methionine, deethylatrazine, l-tryptophan and fumaric acid were reduced in DM comparing with those of CTRL, but had no different intensity in DM and HH groups. The changes were demonstrated in the metabolomic profiles of biopsy-proven DN compared to DM. Biopsy-proven DN patients could be distinguished from age/gender matched DM by l-arginine or taurine levels in serum metabolomic profiles. Taurine and hypotaurine metabolism pathway had the highest impact in pathway set enrichment analysis, which potentially affected the pathogenesis of DN from T2DM. Metabolites between healthy controls (CTRL)/type 2 diabetes mellitus without renal diseases (DM), and DM/diabetic nephropathy (DN).![]()
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Affiliation(s)
- Sibei Tao
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Wen Zheng
- West China-Washington Mitochondria and Metabolism Research Center, West China Hospital of Sichuan University Chengdu 610041 China
| | - Yuan Liu
- Chinese Health Service Management Department, West China Hospital of Sichuan University Chengdu 610041 China
| | - Ling Li
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Lingzhi Li
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Qian Ren
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Min Shi
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Jing Liu
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Jing Jiang
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Huichao Ma
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Zhuo Huang
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Zijing Xia
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Jing Pan
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Tiantian Wei
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Yan Wang
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Peiyun Li
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Tian Lan
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
| | - Liang Ma
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167.,Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Beijing 10000 China
| | - Ping Fu
- Division of Nephrology and National Clinical Research Center for Geriatrics, Kidney Research Institute, West China Hospital of Sichuan University No. 37 Guoxue alley Chengdu 610041 China +86 28 85164167
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10
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Sak D, Erdenen F, Müderrisoglu C, Altunoglu E, Sozer V, Gungel H, Guler PA, Sak T, Uzun H. The Relationship between Plasma Taurine Levels and Diabetic Complications in Patients with Type 2 Diabetes Mellitus. Biomolecules 2019; 9:E96. [PMID: 30862074 PMCID: PMC6468751 DOI: 10.3390/biom9030096] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 12/29/2022] Open
Abstract
Background: Taurine has an active role in providing glucose homeostasis and diabetes causes a decline in taurine levels. This paper investigates the relationship between taurine and diabetic complications, patients' demographic features, and biochemical parameters. Methods: Fifty-nine patients with type 2 diabetes mellitus (T2DM), and 28 healthy control subjects between the ages of 32 and 82 were included in the study. The mean age of subjects was 55.6 ± 10.3 and mean diabetes duration was 10.2 ± 6.0 years. The most commonly accompanying comorbidity was hypertension (HT) (64.5%, n = 38), and the most frequent diabetic complication was neuropathy (50.8%, n = 30). Plasma taurine concentrations were measured by an enzyme-linked immunoassay (ELISA) kit. Results: Plasma taurine concentrations were significantly lower in diabetic patients (0.6 ± 0.1 mmol/L) than controls (0.8 ± 0.2 mmol/L) and in hypertensive (0. 6 ± 0.1 mmol/L) patients (p = 0.000, p = 0.027 respectively). Conclusion: Plasma taurine levels were decreased in patients with T2DM and this was not related to FBG, HbA1c, and microalbuminuria. With regard to complications, we only found a correlation with neuropathy. We suggest that taurine levels may be more important in the development of diabetes; however, it may also have importance for the progression of the disease and the subsequent complications. We further assert that taurine measurement at different times may highlight whether there is a causal relationship in the development of complications.
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Affiliation(s)
- Duygu Sak
- Department of Internal Medicine, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Fusun Erdenen
- Department of Internal Medicine, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Cuneyt Müderrisoglu
- Department of Internal Medicine, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Esma Altunoglu
- Department of Internal Medicine, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Volkan Sozer
- Department of Biochemistry, Yildiz Technical University, Esenler, Istanbul, 34220, Turkey.
| | - Hulya Gungel
- Department of Ophthalmology, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Pınar Akca Guler
- Department of Ophthalmology, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Tuncer Sak
- Department of Internal Medicine, Istanbul Training and Research Hospital, Fatih, Istanbul, 34098, Turkey.
| | - Hafize Uzun
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey.
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Modification by Ethanol and Taurine, Singly and in Combination, of Changes in Indices of Renal Dysfunction Caused by Diabetes in Rats. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1155:369-380. [DOI: 10.1007/978-981-13-8023-5_35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Pandya K, Lau-Cam CA. Taurine Improves the Actions of Metformin and Lovastatin on Plasma Markers of Carbohydrate and Lipid Dysfunction of Diabetic Rats. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1155:87-99. [DOI: 10.1007/978-981-13-8023-5_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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13
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Ma N, Kato T, Isogai T, Gu Y, Yamashita T. The Potential Effects of Taurine in Mitigation of Radiation Nephropathy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1155:497-505. [PMID: 31468426 DOI: 10.1007/978-981-13-8023-5_46] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Taurine (2-aminoethanesulfonic acid) is a sulfur-containing organic acid possessing several important effects, including antioxidant and anti-inflammatory ones. Exposure to ionizing radiation generates free radicals and reactive oxygen species (ROS) in irradiated cells, and free radical generation leads to oxidative stress. It is known that radiation nephropathy includes an inflammation-based process in which ROS and cytokines are responsible. Different doses of explored radiation can cause apoptosis, inflammation and a profound oxidative stress in kidneys. Oxidative stress is involved in renal injury after exposure to both ionizing radiation and inflammation. In this review, we describe the protective effect of taurine against several kidney diseases and the potential effects of taurine in the mitigation of radiation nephropathy. We also report that X-irradiation decreased the expression of taurine and TauT in the kidney. Taurine administration suppressed the decrease in the expression of taurine and TauT in the kidney after radiation exposure. Taurine might contribute to the mitigation of kidney injury induced by radiation.
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Affiliation(s)
- Ning Ma
- Division of Health Science, Graduate School of Health Science, Suzuka University, Suzuka, Mie, Japan
| | - Toshihiro Kato
- Department of Rehabilitation, Suzuka Kaisei Hospital, Suzuka, Japan
| | - Tamami Isogai
- Faculty of Health Science, Suzuka University of Medical Science, Suzuka, Japan
| | - Yeunhwa Gu
- Faculty of Health Science, Junshin Gakuen University, Fukuoka, Japan
| | - Takenori Yamashita
- Faculty of Health Science, Suzuka University of Medical Science, Suzuka, Japan. .,Division of Health Science, Graduate School of Health Science, Suzuka University of Medical Science, Suzuka, Mie, Japan.
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14
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Pandya K, Clark GJ, Lau-Cam CA. Investigation of the Role of a Supplementation with Taurine on the Effects of Hypoglycemic-Hypotensive Therapy Against Diabetes-Induced Nephrotoxicity in Rats. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 975 Pt 1:371-400. [PMID: 28849470 DOI: 10.1007/978-94-024-1079-2_32] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
This study has examined the role of supplementing a treatment of diabetic rats with captopril (CAP), metformin (MET) or CAP-MET with the antioxidant amino acid taurine (TAU) on biochemical indices of diabetes-induced metabolic changes, oxidative stress and nephropathy. To this end, groups of 6 male Sprague-Dawley rats (250-375 g) were made diabetic with a single, 60 mg/kg, intraperitoneal dose of streptozotocin (STZ) in 10 mM citrate buffer pH 4.5 and, after 14 days, treated daily for up to 42 days with either a single oral dose of CAP (0.15 mM/kg), MET (2.4 mM/kg) or TAU (2.4 mM/kg), or with a binary or tertiary combination of these agents. Rats receiving only 10 mM citrate buffer pH 4.5 or only STZ served as negative and positive controls, respectively. All rats were sacrificed by decapitation on day 57 and their blood and kidneys collected. In addition, a 24 h urine sample was collected starting on day 56. Compared to normal rats, untreated diabetic ones exhibited frank hyperglycemia (+313%), hypoinsulinemia (-76%) and elevation of the glycated hemoglobin value (HbA1c, +207%). Also they showed increased plasma levels of Na+ (+35%), K+ (+56%), creatinine (+232%), urea nitrogen (+158%), total protein (-53%) and transforming growth factor-β1 (TGF-β1, 12.4-fold) values. These changes were accompanied by increases in the renal levels of malondialdehyde (MDA, +42%), by decreases in the renal glutathione redox state (-71%), and activities of catalase (-70%), glutathione peroxidase (-71%) and superoxide dismutase (-85%), and by moderate decreases of the urine Na+ (-33%) and K+ (-39%) values. Following monotherapy, MET generally showed a greater attenuating effect than CAP or TAU on the changes in circulating glucose, insulin and HbA1c levels, urine total protein, and renal SOD activity; and CAP appeared more potent than TAU and MET, in that order, in antagonizing the changes in plasma creatinine and urea nitrogen levels. On the other hand, TAU generally provided a greater protection against changes in glutathione redox state and in CAT and GPx activities, with other actions falling in potency between those of CAP and MET. Adding TAU to a treatment with CAP, but not to one with MET, led to an increase in protective action relative to a treatment with drug alone. On the other hand, the actions of CAP-MET, which were about equipotent with those of MET, became enhanced in the presence of TAU, particularly against the changes of the glutathione redox state and activities of antioxidant enzymes. In short, the present results suggest that the addition of TAU to a treatment of diabetes with CAP or CAP-MET, and sometimes to one with MET, will lead to a gain in protective potency against changes in indices of glucose metabolism and of renal functional impairment and oxidative stress.
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Affiliation(s)
- Kashyap Pandya
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY, 11439, USA
| | - George J Clark
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY, 11439, USA
| | - Cesar A Lau-Cam
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY, 11439, USA.
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15
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Schaffer S, Kim HW. Effects and Mechanisms of Taurine as a Therapeutic Agent. Biomol Ther (Seoul) 2018; 26:225-241. [PMID: 29631391 PMCID: PMC5933890 DOI: 10.4062/biomolther.2017.251] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/29/2018] [Accepted: 01/31/2018] [Indexed: 01/16/2023] Open
Abstract
Taurine is an abundant, β-amino acid with diverse cytoprotective activity. In some species, taurine is an essential nutrient but in man it is considered a semi-essential nutrient, although cells lacking taurine show major pathology. These findings have spurred interest in the potential use of taurine as a therapeutic agent. The discovery that taurine is an effective therapy against congestive heart failure led to the study of taurine as a therapeutic agent against other disease conditions. Today, taurine has been approved for the treatment of congestive heart failure in Japan and shows promise in the treatment of several other diseases. The present review summarizes studies supporting a role of taurine in the treatment of diseases of muscle, the central nervous system, and the cardiovascular system. In addition, taurine is extremely effective in the treatment of the mitochondrial disease, mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes (MELAS), and offers a new approach for the treatment of metabolic diseases, such as diabetes, and inflammatory diseases, such as arthritis. The review also addresses the functions of taurine (regulation of antioxidation, energy metabolism, gene expression, ER stress, neuromodulation, quality control and calcium homeostasis) underlying these therapeutic actions.
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Affiliation(s)
- Stephen Schaffer
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL 36688,
USA
| | - Ha Won Kim
- Department of Life Science, University of Seoul, Seoul 02504,
Republic of Korea
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16
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Shukla R, Pandey N, Banerjee S, Tripathi YB. Effect of extract of Pueraria tuberosa on expression of hypoxia inducible factor-1α and vascular endothelial growth factor in kidney of diabetic rats. Biomed Pharmacother 2017. [PMID: 28648975 DOI: 10.1016/j.biopha.2017.06.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUNDS Kidney hypoxia represents a unifying mechanism in the pathogenesis of diabetic nephropathy. Hypoxia-induced factor (HIF)-1α mediates the metabolic responses of renal hypoxia by modulating the expression of VEGF. In the present study, we investigated the effect of Pueraria tuberosa extract (PTY-2r) on the expression of HIF-1α, VEGF and nephrin in streptozotocin (STZ) induced diabetic nephropathy (DN). METHODS The model of diabetic nephropathy (DN) was produced by intraperitoneal injection of 55mg/kg of STZ and maintained for 60days. These DN-rats were randomly divided into three groups, i.e., DN, DN+PTY-2r (100mg/100g), and DN+PTY-2r (50mg/100g). A normal control (NC) group was administrated with drug vehicle. Expression of HIF-1α, VEGF and nephrin were evaluated in the renal tissue. RESULTS Blood glucose, urine protein, serum creatinine, and urea, level were significantly raised along with decreased creatinine clearance in DN rats. Immunofluorescence and Western blot analysis showed significantly increased expression of HIF-1α & VEGF and decreased expression of nephrin in DN control rats. The PTY-2r treatment significantly reversed these changes in a dose-dependent manner. Correlation analysis showed that the expression of VEGF was positively correlated with that of HIF-1α and negatively correlated with nephrin. CONCLUSIONS The PTY-2r can improve the chronic hyperglycemic condition induced kidney damage, and may delay the development of diabetic nephropathy by inhibiting the expression of HIF-1α and VEGF, thereby restoring the expression of nephrin.
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Affiliation(s)
- Rashmi Shukla
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Nidhi Pandey
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Somanshu Banerjee
- Department of Zoology, Institute of Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Yamini B Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India.
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Fakhruddin S, Alanazi W, Jackson KE. Diabetes-Induced Reactive Oxygen Species: Mechanism of Their Generation and Role in Renal Injury. J Diabetes Res 2017; 2017:8379327. [PMID: 28164134 PMCID: PMC5253173 DOI: 10.1155/2017/8379327] [Citation(s) in RCA: 165] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/07/2016] [Indexed: 02/07/2023] Open
Abstract
Diabetes induces the onset and progression of renal injury through causing hemodynamic dysregulation along with abnormal morphological and functional nephron changes. The most important event that precedes renal injury is an increase in permeability of plasma proteins such as albumin through a damaged glomerular filtration barrier resulting in excessive urinary albumin excretion (UAE). Moreover, once enhanced UAE begins, it may advance renal injury from progression of abnormal renal hemodynamics, increased glomerular basement membrane (GBM) thickness, mesangial expansion, extracellular matrix accumulation, and glomerulosclerosis to eventual end-stage renal damage. Interestingly, all these pathological changes are predominantly driven by diabetes-induced reactive oxygen species (ROS) and abnormal downstream signaling molecules. In diabetic kidney, NADPH oxidase (enzymatic) and mitochondrial electron transport chain (nonenzymatic) are the prominent sources of ROS, which are believed to cause the onset of albuminuria followed by progression to renal damage through podocyte depletion. Chronic hyperglycemia and consequent ROS production can trigger abnormal signaling pathways involving diverse signaling mediators such as transcription factors, inflammatory cytokines, chemokines, and vasoactive substances. Persistently, increased expression and activation of these signaling molecules contribute to the irreversible functional and structural changes in the kidney resulting in critically decreased glomerular filtration rate leading to eventual renal failure.
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Affiliation(s)
- Selim Fakhruddin
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Pharmacy Building, 1800 Bienville Dr., Monroe, LA 71201, USA
| | - Wael Alanazi
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Pharmacy Building, 1800 Bienville Dr., Monroe, LA 71201, USA
| | - Keith E. Jackson
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Pharmacy Building, 1800 Bienville Dr., Monroe, LA 71201, USA
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18
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Naito Y, Ichikawa H, Akagiri S, Uchiyama K, Takagi T, Handa O, Yasukawa Z, Tokunaga M, Ishihara N, Okubo T, Mukai J, Ohki M, Uchida K, Yoshikawa T. Identification of cysteinylated transthyretin, a predictive biomarker of treatment response to partially hydrolyzed guar gum in type 2 diabetes rats, by surface-enhanced laser desorption/ionization time-of-flight mass spectrometry. J Clin Biochem Nutr 2015; 58:23-33. [PMID: 26798194 PMCID: PMC4706097 DOI: 10.3164/jcbn.15-98] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 08/27/2015] [Indexed: 12/13/2022] Open
Abstract
Recent evidence has indicated that total fiber intake is inversely related to type 2 diabetes risk. The present study aimed to investigate the effects of chronic administration of partially hydrolyzed guar gum (PHGG), a water-soluble dietary fiber, on the occurrence of diabetes and its complications, fatty liver and nephropathy. We also identified predictive serum biomarkers of treatment response to PHGG by mass spectroscopy-based proteomic analysis using Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a good model of human non-insulin-dependent diabetes mellitus. In this study, at 5 weeks of age, OLETF rats and control strain Long-Evans Tokushima Otsuka (LETO) rats were fed a control diet or a high-fiber diet (5% PHGG) for 57 weeks. Body weight, food intake, oral glucose tolerance test, plasma insulin levels, and urine glucose and protein levels were regularly measured. Oral glucose tolerance tests (OGTT) and storage of serum in a deep freezer were conducted at the beginning of the experiment and every 4 weeks after overnight fasting during the experiments. PHGG treatment affected neither meal patterns nor the body weight of OLETF and LETO rats. Repeated measure analysis of variance revealed significant differences in fasting plasma glucose and plasma glucose at 2 h after OGTT between control OLETF (OLETF-C) rats and OLETF rats treated with PHGG (OLETF-F). The glucose response determined by the area under the curve of OGTT was significantly greater in OLETF-C rats than that in OLETF-F rats at 25 weeks of age. HOMA-IR, an index of insulin resistance, increased at 25 weeks of age in OLETF-C rats, while this increase was significantly inhibited in OLETF-F rats. At 62 weeks of age, PHGG treatment significantly improved hepatic steatosis as well as renal mesangial matrix accumulation in OLETF rats. To identify the risk marker for diabetes mellitus by SELDI-TOF MS, we collected sera from 21-week-old individuals. Among the 12 specific peaks that were risk marker candidates for diabetes mellitus, the m/z 13,720 peak was identified as that of cysteinylated transthyretin by sequencing of four tryptic peptides using tandem mass spectrometry and peak distribution around the m/z 13,720 peak in the SELDI-TOF spectra. In conclusion, we found that chronic treatment with PHGG improved insulin resistance, delayed the onset of diabetes, and inhibited the development of diabetic complications, as well as identified cysteinylated transthyretin as a predictive biomarker of treatment response to PHGG in OLETF rats.
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Affiliation(s)
- Yuji Naito
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Hiroshi Ichikawa
- Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe-shi, Kyoto 610-0321, Japan
| | - Satomi Akagiri
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kazuhiko Uchiyama
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tomohisa Takagi
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Osamu Handa
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Zenta Yasukawa
- Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan
| | - Makoto Tokunaga
- Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan
| | - Noriyuki Ishihara
- Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan
| | - Tsutomu Okubo
- Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan
| | - Jun Mukai
- Biomarker Science Co., Ltd., 103-5 Tanaka-Monzencho, Sakyo-ku, Kyoto 540-0029, Japan
| | - Makoto Ohki
- Biomarker Science Co., Ltd., 103-5 Tanaka-Monzencho, Sakyo-ku, Kyoto 540-0029, Japan
| | - Kagehiro Uchida
- Biomarker Science Co., Ltd., 103-5 Tanaka-Monzencho, Sakyo-ku, Kyoto 540-0029, Japan
| | - Toshikazu Yoshikawa
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
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Yang J, Zhang J. Influence of protein kinase C (PKC) on the prognosis of diabetic nephropathy patients. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:14925-14931. [PMID: 26823823 PMCID: PMC4713609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 08/21/2015] [Indexed: 06/05/2023]
Abstract
AIMS To investigate the association between protein kinase C (PKC) and the prognosis of patients with diabetic nephropathy (DN). METHODS 92 patients with DN who had received treatments with angiotensin converting enzyme inhibitor (ACEI) or angiotensin-receptor blockade (ARB) were collected. The clinicopathologic characteristics were recorded and a 4-year follow-up with the final result of impaired renal functions (eGFR < 40 mL/min) was conducted. The expression of PKC was detected by immunohistochemical assay. Kaplan-Meier and Cox regression analysis were performed to estimate the effects of PKC on DN prognosis. RESULTS According to immunohistochemical analysis, there were 54 cases with positive expression of PKC (positive rate 58.7%). Meanwhile, during the follow-up, the urine protein, mean serum creatinine and eGFR in patients with positive PKC were all higher than those in negative expression group (P < 0.05). The expression of PKC was influenced by age (P < 0.001), course of disease (P < 0.001), blood pressure (P = 0.002), blood glucose (P < 0.001), HbA1c (P = 0.002), renal functions of patients before (P = 0.011) and after (P = 0.041) the biopsy. Besides, the Kaplan-Meier curve revealed that patients with positive PKC expression had shorter survival time than those with negative PKC expression (P < 0.001). Cox regression analysis indicated that HbA1c (P = 0.009), renal functions of patients after the biopsy (P = 0.002) and PKC (P = 0.028) were important factors in the prognosis of DN and they might be independent prognostic markers. CONCLUSION The expression of PKC is relatively higher in DN patients than in healthy controls. And PKC may be a valuable prognostic marker for patients with DN.
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Affiliation(s)
- Jie Yang
- Second Department of Endocrinology, Tai An Central Hospital Shandong Province, China
| | - Jian Zhang
- Second Department of Endocrinology, Tai An Central Hospital Shandong Province, China
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Guo C, Liu Y, Zhao W, Wei S, Zhang X, Wang W, Zeng X. Apelin promotes diabetic nephropathy by inducing podocyte dysfunction via inhibiting proteasome activities. J Cell Mol Med 2015; 19:2273-85. [PMID: 26103809 PMCID: PMC4568931 DOI: 10.1111/jcmm.12619] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 04/15/2015] [Indexed: 12/12/2022] Open
Abstract
Podocyte injuries are associated with progression of diabetic nephropathy (DN). Apelin, an adipocyte-derived peptide, has been reported to be a promoting factor for DN. In this study, we aim to determine whether apelin promotes progression of DN by inducing podocyte dysfunction. kk-Ay mice were used as models for DN. Apelin and its antagonist, F13A were intraperitoneally administered for 4 weeks, respectively. Renal function and foot process proteins were analysed to evaluate the effects of apelin on kk-Ay mice and podocytes. Apelin increased albuminuria and decreased podocyte foot process proteins expression in kk-Ay mice, which is consistent with the results that apelin receptor (APLNR) levels increased in glomeruli of patients or mice with DN. In cultured podocytes, high glucose increased APLNR expression and apelin administration was associated with increased permeability and decreased foot process proteins levels. All these dysfunctions were associated with decreased 26S proteasome activities and increased polyubiquitinated proteins in both kk-Ay mice and cultured podocytes, as demonstrated by 26S proteasome activation with cyclic adenosine monophosphate (cAMP) or oleuropein. These effects seemed to be related to endoplasmic reticulum (ER) stress, as apelin increased C/EBP homologous protein (CHOP) and peiFα levels while cAMP or oleuropein reduced it in high glucose and apelin treated podocytes. These results suggest that apelin induces podocyte dysfunction in DN through ER stress which was induced by decreased proteasome activities in podocytes.
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Affiliation(s)
- Caixia Guo
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China.,Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yu Liu
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China
| | - Wenjie Zhao
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China
| | - Shengnan Wei
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China
| | - Xiaoli Zhang
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China
| | - Wenying Wang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiangjun Zeng
- Department of Pathophysiology and Pathology, Capital Medical University, Beijing, China
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Gordon R, Park SY, Schuller-Levis G, Park E. A novel cysteine sulfinic Acid decarboxylase knock-out mouse: pathology of the kidney and lung in newborn pups. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 803:17-28. [PMID: 25833484 DOI: 10.1007/978-3-319-15126-7_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ronald Gordon
- Department of Pathology, Mt. Sinai School of Medicine, New York, NY, 10029, USA
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Pandya KG, Budhram R, Clark GJ, Lau-Cam CA. Taurine can enhance the protective actions of metformin against diabetes-induced alterations adversely affecting renal function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 803:227-50. [PMID: 25833502 DOI: 10.1007/978-3-319-15126-7_20] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kashyap G Pandya
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY, 11439, USA
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23
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Comparative evaluation of torasemide and furosemide on rats with streptozotocin-induced diabetic nephropathy. Exp Mol Pathol 2014; 97:137-43. [DOI: 10.1016/j.yexmp.2014.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 06/20/2014] [Indexed: 11/18/2022]
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