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Wang C, Chi J, Che K, Ma X, Qiu M, Wang Z, Wang Y. The combined effect of mesenchymal stem cells and resveratrol on type 1 diabetic neuropathy. Exp Ther Med 2019; 17:3555-3563. [PMID: 30988737 PMCID: PMC6447822 DOI: 10.3892/etm.2019.7383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 11/30/2018] [Indexed: 01/09/2023] Open
Abstract
Diabetic neuropathy (DN) is one of the most common diabetic complications that results in an increase in patient discomfort and pain. The present study demonstrated that mesenchymal stem cells (MSCs) or resveratrol (RSV) may improve diabetic hyperglycemia and neuropathy. The aim of the present study was to investigate the combined effect of MSCs and RSV on DN. A total of 100 non-obese diabetic mice were divided into the following six groups: Normal control, MSCs, RSV, MSCs + RSV, insulin and diabetic control groups. Following homologous therapy, the levels of blood glucose and C-peptide, islets, nuclear factor (NF)-κB, nerve growth factor (NGF) and myelin basic protein (MBP), and the sciatic nerve structure in each group were examined and evaluated. Following the administration of therapy, the levels of blood glucose and C-peptide in mice in the MSCs + RSV group were significantly improved when compared with the other diabetic groups, and the dosage of insulin therapy required was the lowest among the six experimental groups (P<0.05). The levels of NGF, MBP and NF-κB in the MSCs + RSV group were significantly improved compared with the MSCs and RSV groups (P<0.05). Furthermore, the diameter of the axon, number of myelinated nerve fibers and the depth of the myelin sheath in the MSCs + RSV group were greatest among the five examined groups (excluding the control). The combination of RSV and MSCs could relieve hyperglycemia and improve DN. This indicated that the combination of RSV and MSCs may be a novel therapeutic method for the treatment of DN.
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Affiliation(s)
- Chen Wang
- Endocrinology Department, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Jingwei Chi
- Laboratory of Thyroid Disease, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Kui Che
- Laboratory of Thyroid Disease, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Xiaolong Ma
- Endocrinology Department, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Mingyue Qiu
- Endocrinology Department, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Zhongchao Wang
- Endocrinology Department, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Yangang Wang
- Endocrinology Department, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
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Effects of Mitochondrial Dysfunction via AMPK/PGC-1 α Signal Pathway on Pathogenic Mechanism of Diabetic Peripheral Neuropathy and the Protective Effects of Chinese Medicine. Chin J Integr Med 2019; 25:386-394. [DOI: 10.1007/s11655-018-2579-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 01/12/2023]
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103
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Zhang HH, Han X, Wang M, Hu Q, Li S, Wang M, Hu J. The Association between Genomic DNA Methylation and Diabetic Peripheral Neuropathy in Patients with Type 2 Diabetes Mellitus. J Diabetes Res 2019; 2019:2494057. [PMID: 31781662 PMCID: PMC6875377 DOI: 10.1155/2019/2494057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/12/2019] [Indexed: 12/28/2022] Open
Abstract
AIM DNA methylation is thought to be involved in regulating the expression of key genes and inducing diabetic peripheral neuropathy (DPN). However, clinically, the level of whole-genome DNA methylation and its relationship with DPN remains unclear. METHODS 186 patients with type 2 diabetes mellitus (T2DM) admitted to the Second Affiliated Hospital of Soochow University since Jul. 2016 to Oct. 2017 were enrolled in the study, including 100 patients in the DPN group and 86 patients in the non-DPN group, diagnosed with Toronto Clinical Scoring System (TCSS). Clinical and biochemical characteristics between the two groups were compared, and the correlations with TCSS scores were analyzed. Furthermore, the levels of genomic DNA methylation of leukocytes, measured with high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS), were also analyzed between the two groups. RESULTS Age, duration, triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL-C), creatinine, uric acid (UA), blood urea nitrogen (BUN), and C-reactive protein (CRP) were significantly higher in the DPN group. Estimated glomerular filtration rate (eGFR) and the level of genomic DNA methylation were much lower in the DPN group. Spearman correlation analysis showed that TCSS was positively correlated with age, duration, UA, and CRP and was negatively correlated with body mass index (BMI), eGFR, and the level of genomic DNA methylation. Interestingly, multiple stepwise regression analysis showed that only duration, genomic DNA methylation, and eGFR had impacts on TCSS. The results also showed that the levels of genomic DNA methylation did not change significantly whether or not there was renal injury. Another multiple stepwise regression analysis showed that TCSS and BMI were the influencing factors of genomic DNA methylation. Finally, we found that genomic DNA methylation levels were decreased significantly in the DPN group compared with the non-DPN group when the duration is ≥5 years or BMI ≥ 25 kg/m2. CONCLUSION Low level of genomic DNA methylation is a relative specific risk factor of diabetic peripheral neuropathy in patients with type 2 diabetes.
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Affiliation(s)
- Hong-Hong Zhang
- Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
| | - Xingfa Han
- Department of Endocrinology, Suzhou Science and Technology Town Hospital, Nanjing Medical University, Suzhou 215004, China
| | - Mengmeng Wang
- Clinical Pharmacology Laboratory, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
| | - Qingfang Hu
- Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
| | - Sicheng Li
- Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
| | - Meng Wang
- Clinical Pharmacology Laboratory, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215004, China
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104
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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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105
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Matos TM, Souza-Talarico JND. How stress mediators can cumulatively contribute to Alzheimer's disease An allostatic load approach. Dement Neuropsychol 2019; 13:11-21. [PMID: 31073376 PMCID: PMC6497016 DOI: 10.1590/1980-57642018dn13-010002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/17/2018] [Indexed: 11/22/2022] Open
Abstract
Allostatic load is defined as the frequent activation of the neuroendocrine, immunological, metabolic and cardiovascular systems, which makes individuals more susceptible to stress-related health problems. According to this model, physiological dysregulations start to emerge decades before diseases manifest. Consequently, stress research has shifted its attention to anticipating the degree of this dysregulation to better understand the impact of stress hormones and other biomarkers on disease progression. In view of the growing number of studies that demonstrate the influence of modifiable risk factors on cognitive decline, in addition to the effects of chronic stress mediators, the objective of the present review was to present an overview of the development of cognitive changes based on studies on stress and its mediators.
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Affiliation(s)
- Tatiane Martins Matos
- Nurse, Master of Science from the School of Nursing, University of
São Paulo (EE-USP), SP, Brazil
| | - Juliana Nery De Souza-Talarico
- Professor at the Department of Medical-Surgical Nursing, School of
Nursing, University of São Paulo (EE-USP), SP, Brazil. PhD In the Area of
Neurobiology of Stress and Cognition
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106
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Liu Q, Tie L. Preventive and Therapeutic Effect of Ganoderma (Lingzhi) on Diabetes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1182:201-215. [DOI: 10.1007/978-981-32-9421-9_8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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107
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Chang P, Zhang M, Zhang X, Li G, Hu H, Wu J, Wang X, Yang Z, Zhang J, Chen W, Ren M, Li X, Zhu M, Chen B, Yu J. B-type natriuretic peptide attenuates endoplasmic reticulum stress in H9c2 cardiomyocytes underwent hypoxia/reoxygenation injury under high glucose/high fat conditions. Peptides 2019; 111:103-111. [PMID: 29689346 DOI: 10.1016/j.peptides.2018.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 04/17/2018] [Accepted: 04/19/2018] [Indexed: 02/06/2023]
Abstract
Exogenously administered B-type natriuretic peptide (BNP) has been shown to provide cardioprotection against various heart diseases. However, the underlying mechanisms remain elusive. This study explores whether BNP exerts its cardioprotection against hypoxia/reoxygenation (H/R) injury under high glucose/high fat (HG/HF) conditions in cardiac H9c2 cells and uncovers the underlying mechanisms. Our data revealed that BNP significantly increased the cell viability and decreased the release of lactate dehydrogenase (LDH) and creatine kinase (CK), with a maximal effect at the BNP concentration of 10-7 mol/L. In addition, by analyzing the activation of cleaved caspase-3 and by Annexin V-FITC/PI staining, we showed that BNP attenuated H/R-induced cell apoptosis in HG/HF conditions. Western blot analysis showed enhanced phosphorylation of protein kinase RNA (PKR)-like endoplastmic reticulum (ER) kinase (PERK) and eukaryotic initiation factor 2α (eIF2α)(one of the three main signaling pathways in endoplastmic reticulum (ER) stress), and increased expression of GRP78 and CHOP proteins (ER stress-related proteins) in H9c2 cells which underwent H/R in HG/HF conditions. Treatment with BNP or 8-Br-cGMP (an analog of cGMP) reversed this activation. However, this effect was significantly weakened by KT-5823, a selective cGMP-dependent protein kinase G (PKG) inhibitor. In addition, similar to BNP, treatment with a specific inhibitor of ER stress tauroursodeoxycholic acid (TUDCA) protected the cells against H/R injury exposed to HG/HF conditions. In conclusion, these findings demonstrated that BNP effectively protected cells against H/R injury under HG/HF conditions by inhibiting the ER stress via activation of the cGMP-PKG signaling pathway.
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Affiliation(s)
- Pan Chang
- Shaanxi Key Laboratory of Ischemic Cardiovascular Disease, Xi'an Medical University, Xi'an, China; Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China; Department of Physiology, Fourth Military Medical University, Xi'an, China
| | - Mingyang Zhang
- Institute of Forensic Sciences, Soochow University, Suzhou, China
| | - Xiaomeng Zhang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guohua Li
- Department of Physiology, Fourth Military Medical University, Xi'an, China
| | - Haiyan Hu
- Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Juan Wu
- Department of General Practitioner, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Xihui Wang
- Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Zihua Yang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Jing Zhang
- Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Weiguo Chen
- Department of General Practitioner, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Minggang Ren
- Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Xin Li
- Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China
| | - Miaozhang Zhu
- Department of Physiology, Fourth Military Medical University, Xi'an, China.
| | - Baoying Chen
- Department of Radiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
| | - Jun Yu
- Shaanxi Key Laboratory of Ischemic Cardiovascular Disease, Xi'an Medical University, Xi'an, China; Department of Cardiology, Second Affiliated Hospital, Xi'an Medical University, Xi'an, China.
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108
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Ye T, Meng X, Wang R, Zhang C, He S, Sun G, Sun X. Gastrodin Alleviates Cognitive Dysfunction and Depressive-Like Behaviors by Inhibiting ER Stress and NLRP3 Inflammasome Activation in db/db Mice. Int J Mol Sci 2018; 19:ijms19123977. [PMID: 30544722 PMCID: PMC6321309 DOI: 10.3390/ijms19123977] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 12/15/2022] Open
Abstract
Patients with diabetes mellitus (DM) suffer more risks from diabetic encephalopathy such as cognitive dysfunction and depressive-like behaviors. Numerous studies show that ER (endoplasmic reticulum) stress and inflammation play important roles in the development of diabetic encephalopathy. Gastrodin (Gas), one major component of Gastrodia elata, is traditionally used in central nervous system disorders and is believed to possess anti-inflammatory, anti-apoptotic, and other neuroprotective effects. This present study aims to explore the protective effects of Gas on diabetic encephalopathy. Gas was administrated daily (70 and 140 mg/Kg) for 12 weeks. Meanwhile, the fasting blood glucose and body weight of db/db mice were measured every two weeks. After Gas treatment, the Morris water maze (MWM) test and novel object recognition (NOR) test were performed to assess the learning and memory functions of db/db mice, and the forced swim test was performed to evaluate depressive-like behaviors of db/db mice. Additionally, the expression of ER stress and Nucleotide binding and oligomerization domain-like (Nod) receptor family pyrin domain-containing 3 (NLRP3) inflammasome related proteins were evaluated by using Western blot. Our study suggested that Gas attenuated blood glucose levels and dyslipidemia of db/db mice. It has been shown that Gas could improve learning and memory function and depressive-like behaviors of db/db mice. Moreover, Gas inhibited ER stress and NLRP3 inflammasome activation in the hippocampus. Taken together, this study demonstrates that Gas attenuates the diabetic encephalopathy by inhibiting ER stress and NLRP3 inflammasome activation.
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Affiliation(s)
- Tianyuan Ye
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Xiangbao Meng
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Ruiying Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Chenyang Zhang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Shuaibing He
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Guibo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
| | - Xiaobo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing, China.
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109
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Abdelsamia EM, Khaleel SA, Balah A, Abdel Baky NA. Curcumin augments the cardioprotective effect of metformin in an experimental model of type I diabetes mellitus; Impact of Nrf2/HO-1 and JAK/STAT pathways. Biomed Pharmacother 2018; 109:2136-2144. [PMID: 30551471 DOI: 10.1016/j.biopha.2018.11.064] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 11/14/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022] Open
Abstract
Metformin is one of the most commonly prescribed antidiabetic drugs. A recent clinical study has highlighted the protective role of metformin against cardiac complications in type I diabetes. Curcumin is a natural compound with well-known antioxidant and anti-inflammatory properties. The present study was designed to investigate the possible role of curcumin in potentiating metformin`s putative effects. Rats received single injection of 52.5 mg/kg streptozocin and the diabetic rats were treated with metformin (200 mg/kg/day), curcumin (100 mg/kg/day) and their combination for 6 weeks. Diabetic rats showed degenerated myocardium as well as significant increase in Creatine Kinase-MB (CK-MB), troponin I and TGF-β1 levels. In addition, cardiac levels of lipid peroxidation, IL-6, and NF-κB were significantly elevated. Although treatment with metformin restored most of the measured parameters, it showed insignificant improvement in histopathological architecture accompanied by absence of antioxidant effect. Interestingly, concomitant administration of curcumin along with metformin revealed more protection than metformin alone. Inhibition of JAK/STAT pathway and activation of Nrf2/HO-1 pathway seems to be among the mechanisms mediating the effects of curcumin and metformin. The findings of this study highlight the benefits of metformin/curcumin combination in preventing diabetic cardiomyopathy.
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Affiliation(s)
- Eman M Abdelsamia
- Pharmacology and Toxicology Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Sahar A Khaleel
- Pharmacology and Toxicology Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt.
| | - Amany Balah
- Pharmacology and Toxicology Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Nayira A Abdel Baky
- Pharmacology and Toxicology Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
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110
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Li Q, Jiao Y, Yu Y, Wang G, Yu Y. Hydrogen‑rich medium alleviates high glucose‑induced oxidative stress and parthanatos in rat Schwann cells in vitro. Mol Med Rep 2018; 19:338-344. [PMID: 30431142 PMCID: PMC6297768 DOI: 10.3892/mmr.2018.9631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 10/02/2018] [Indexed: 12/21/2022] Open
Abstract
Diabetic peripheral neuropathy (DPN) is considered to be the most common cause of microvascular diabetic complications, for which no effective therapies currently exist. Previous studies have identified that oxidative stress is the common pathway in all possible hypotheses for the induction of DPN, and poly(ADP-ribose) (PAR) polymerase-1 (PARP-1)-dependent cell death (parthanatos) is key in the pathogenic mechanisms of neurodegenerative disease. The aim of the present study was to investigate the protective effects and corresponding mechanisms of hydrogen-rich medium (HM) on high glucose (HG)-induced oxidative stress and parthanatos in primary rat Schwann cells (RSCs) in vitro. The RSCs were divided into groups and treated for 48 h. Cell counting kit-8 and lactate dehydrogenase assays were used to detect cell viability and cytotoxicity, respectively; intracellular OH− levels were measured using a DCFH-DA assay; concentrations of peroxynitrite (ONOO−) and 8-hydroxy deoxyguanosine (8-OHdG) were evaluated with an enzyme-linked immunosorbent assay; relative expression levels of parthanatos-related proteins [PAR, nucleus apoptosis-inducing factor (AIF) and total AIF] were analyzed using western blot analysis, and immunofluorescence was used to determine the nuclear translocation of AIF. After 48 h, HG was shown to induce severe oxidative stress and promote marked levels of parthanatos in the RSCs. Treatment with HM inhibited HG-induced oxidative stress by reducing the production of OH− and ONOO− and suppressed parthanatos by downregulating the levels of 8-OHdG, the expression of PAR and the nuclear translocation of AIF. HM improved cell viability and inhibited cytotoxicity under the HG condition. These results indicate that HM effectively reduces HG-induced oxidative stress in RSCs and protects them against parthanatos. Therefore, HM may be a novel treatment for DPN.
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Affiliation(s)
- Qing Li
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yang Jiao
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yang Yu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Guolin Wang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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111
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Vural G, Gümüsyayla Ş. Monocyte-to-high density lipoprotein ratio is associated with a decreased compound muscle action potential amplitude in patients with diabetic axonal polyneuropathy. Medicine (Baltimore) 2018; 97:e12857. [PMID: 30334993 PMCID: PMC6212287 DOI: 10.1097/md.0000000000012857] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The monocyte-to-high density lipoprotein ratio (MHR) has recently been implemented as an indicator of inflammation and oxidative stress. The present study characterized MHR in patients with diabetic polyneuropathy (DPN), in which oxidative stress and microvascular damage play a role in pathogenesis, relative to patients with non-DPN, diabetic patients without polyneuropathy, and healthy individuals. We further aimed to evaluate the association between MHR and the decreased compound muscle action potential (CMAP) amplitude of patients with diabetic axonal polyneuropathy.We enrolled 90 patients with DPN, 75 patients with nonDPN, 92 diabetic patients without polyneuropathy, and 67 healthy individuals; The monocyte, high-density lipoprotein cholesterol (HDL-C) values were obtained for all participants and MHR was calculated for each individual. Intergroup comparison was performed. The relationship between MHR and the posterior tibial nerve CMAP amplitudes was examined.Statistically significant negative correlation was observed between MHR and the posterior tibial nerve CMAP amplitudes of patients with DPN. The MHR values of the patients with DPN were significantly higher than those of the patients with non-DPN, diabetic patients without polyneuropathy and the control group.This study demonstrated that diabetic patients with higher MHR values may be more likely to develop polyneuropathy.
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112
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An Investigation on the Therapeutic Effect of Thymosin β4 and Its Expression Levels in Streptozotocin-Induced Diabetic Mice. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3421568. [PMID: 30225249 PMCID: PMC6129858 DOI: 10.1155/2018/3421568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/01/2018] [Accepted: 08/12/2018] [Indexed: 11/17/2022]
Abstract
Thymosin β4 (Tβ4) treatment was known to show the potential therapeutic effects on diabetic complications. This study was performed to determine if Tβ4 expression is changed in both serum and tissues under diabetic conditions and can be a serum biomarker. Type 1 diabetic mice were induced in C57/BL6J mice by intraperitoneal injection of streptozotocin (STZ) at a dose of 50 mg/kg body weight. The mice were sacrificed at 16 weeks after STZ injection. Tissues and plasmas were obtained to determine the expression levels of Tβ4 using ELISA, real time RT-PCR, and immunohistochemistry. The average serum glucose level was increased to approximately 400 mg/dL beginning 2 weeks after the five injections of STZ and lasting for at least 13 weeks until sacrifice. The plasma and tissue levels of Tβ4 in the age-matched control mice were not significantly different from those of the diabetic mice. In conclusion, the Tβ4 expression level in the plasmas and tissues of diabetic mice was not affected by diabetic conditions. It indirectly suggests that the therapeutic effect of Tβ4 on diabetic complications is due to its regenerative effects on damaged tissue but not to the changed expression level of Tβ4 in plasma and tissues of diabetes.
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113
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Wang H, Zhang H, Cao F, Lu J, Tang J, Li H, Zhang Y, Feng B, Tang Z. Protection of insulin‑like growth factor 1 on experimental peripheral neuropathy in diabetic mice. Mol Med Rep 2018; 18:4577-4586. [PMID: 30221656 DOI: 10.3892/mmr.2018.9435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 07/19/2018] [Indexed: 11/05/2022] Open
Abstract
The present study investigated whether insulin‑like growth factor‑1 (IGF‑1) exerts a protective effect against neuropathy in diabetic mice and its potential underlying mechanisms. Mice were divided into four groups: Db/m (control), db/db (diabetes), IGF‑1‑treated db/db and IGF‑1‑picropodophyllin (PPP)‑treated db/db. Behavioral studies were conducted using the hot plate and von Frey methods at 6 weeks of age prior to treatment. The motor nerve conduction velocity (NCV) of the sciatic nerve was measured using a neurophysiological method at 8 weeks of age. The alterations in the expression levels of IGF‑1 receptor (IGF‑1R), c‑Jun N‑terminal kinase (JNK), extracellular signal‑regulated kinase (ERK), p38 and effect of IGF‑1 on the sciatic nerve morphology were observed by western blotting and electron microscopy. Compared with the control group, the diabetes group developed hypoalgesia after 12 weeks, and neurological lesions improved following an intraperitoneal injection of recombinant (r)IGF‑1. The sciatic NCV in the diabetes group was significantly lower compared with the control group. The sciatic NCV improved following rIGF‑1 intervention; however, was impaired following administration of the IGF‑1 receptor antagonist, PPP. The myelin sheath in the sciatic nerve of the diabetes group was significantly more impaired compared with the control group. The myelin sheath in the sciatic nerves of the rIGF‑1‑treated group was significantly improved compared with the diabetes group; whereas, they were significantly impaired following administration of the IGF‑1R inhibitor. In addition, the expression of IGF‑1R, phosphorylated (p)‑JNK and p‑ERK of sciatic nerves in the db/db mice was significantly increased following treatment with IGF‑1. The expression levels of these proteins were significantly lower in the IGF‑1‑PPP group compared with the IGF‑1 group; however, no significant difference was observed in the expression levels of p‑p38 following treatment with IGF‑1. The results of the present study demonstrated that IGF‑1 may improve neuropathy in diabetic mice. This IGF‑1‑induced neurotrophic effect may be associated with the increased phosphorylation levels of JNK and ERK, not p38; however, it was attenuated by administration of an IGF‑1R antagonist.
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Affiliation(s)
- Hua Wang
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Hao Zhang
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Fuming Cao
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Jiaping Lu
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Jin Tang
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Huizhi Li
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Yiyun Zhang
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Bo Feng
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Zhaosheng Tang
- Department of Endocrinology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
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Izuchi R, Ishijima T, Okada S, Abe K, Nakai Y. Hepatic fatty acid biosynthesis in KK-A y mice is modulated by administration of persimmon peel extract: A DNA microarray study. Food Sci Nutr 2018; 6:1657-1663. [PMID: 30258609 PMCID: PMC6145309 DOI: 10.1002/fsn3.728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 11/14/2017] [Accepted: 06/08/2018] [Indexed: 01/12/2023] Open
Abstract
SCOPE Previously, we showed that the intake of a persimmon peel (PP) extract altered hepatic gene expression associated with the insulin signaling pathway and enhanced tyrosine phosphorylation of insulin receptors in nonobese type 2 diabetic Goto-Kakizaki rats. Our objective was to evaluate the effect of fat-soluble PP extract on obese type 2 diabetic KK-Ay mice with insulin resistance. METHODS AND RESULTS KK-Ay mice were fed a diet mixed with 0.1% of the extract for 8 weeks. The total ketone body levels in the plasma of PP extract-fed mice were significantly lower than those in the normal diet-fed mice. Hepatic nonesterified palmitic acid content was higher in the PP extract-fed mice than in normal diet-fed mice. The hepatic gene expression profiles of the treated mice indicated upregulation of fatty acid synthesis and downregulation of inflammation-associated genes, predicting SREBP-1c and PPARγ activation. CONCLUSION These results suggest that the PP extract enhances hepatic fatty acid synthesis via SREBP-1c and PPARγ, as well as anti-inflammatory activity in KK-Ay mice.
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Affiliation(s)
| | - Tomoko Ishijima
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuJapan
| | - Shinji Okada
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuJapan
| | - Keiko Abe
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuJapan
- Project on Health and Anti‐agingKanagawa Academy of Science and Technology Life Science & Environment Research CenterKawasakiJapan
| | - Yuji Nakai
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuJapan
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115
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Pan H, Ding Y, Yan N, Nie Y, Li M, Tong L. Trehalose prevents sciatic nerve damage to and apoptosis of Schwann cells of streptozotocin-induced diabetic C57BL/6J mice. Biomed Pharmacother 2018; 105:907-914. [DOI: 10.1016/j.biopha.2018.06.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/08/2018] [Accepted: 06/13/2018] [Indexed: 02/06/2023] Open
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Abstract
PURPOSE OF REVIEW This review will summarize recent findings of the effect of supplemental fatty acids, with an emphasis on omega-3 polyunsaturated fatty acids, as a treatment for diabetic peripheral neuropathy. RECENT FINDINGS Pre-clinical studies have provided evidence that treating diabetic rodents with δ linolenic acid (omega-6 18:3) and to a greater extent with eicosapentaenoic and docosahexaenoic acids (omega-3 20:5 and 22:6, respectively) improve and even reverse vascular and neural deficits. Additional studies have shown resolvins, metabolites of eicosapentaenoic and docosahexaenoic acids, can induce neurite outgrowth in neuron cultures and that treating type 1 or type 2 diabetic mice with resolvin D1 or E1 provides benefit for peripheral neuropathy similar to fish oil. Omega-3 polyunsaturated fatty acids derived from fish oil and their derivatives have anti-inflammatory properties and could provide benefit for diabetic peripheral neuropathy. However, clinical trials are needed to determine whether this statement is true.
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Affiliation(s)
- Mark A Yorek
- Department of Veterans Affairs Iowa City Health Care System, Room 127, Building 41, Iowa City, IA, 52246, USA.
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA.
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, 52242, USA.
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Oxidative Stress and First-Line Antituberculosis Drug-Induced Hepatotoxicity. Antimicrob Agents Chemother 2018; 62:AAC.02637-17. [PMID: 29784840 DOI: 10.1128/aac.02637-17] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hepatotoxicity induced by antituberculosis drugs is a serious adverse reaction with significant morbidity and even, rarely, mortality. This form of toxicity potentially impacts the treatment outcome of tuberculosis in some patients. Covering only first-line antituberculosis drugs, this review addresses whether and how oxidative stress and, more broadly, disturbance in redox homeostasis alongside mitochondrial dysfunction may contribute to the hepatotoxicity induced by them. Risk factors for such toxicity that have been identified, in addition to genetic factors, principally include old age, malnutrition, alcoholism, chronic hepatitis C and chronic hepatitis B infection, HIV infection, and preexisting liver disease. Importantly, these comorbid conditions are associated with oxidative stress. Thus, the shared pathogenetic mechanism(s) for liver injury might be in operation due to disease-drug interaction. Our current ability to predict, prevent, or treat hepatotoxicity (other than removing potentially hepatotoxic drugs) remains limited. More translational research to unravel the pathogenesis, inclusive of the underlying molecular basis, regarding antituberculosis drug-induced hepatotoxicity is needed, and so is clinical research pertaining to the advances in therapy with antioxidants and drugs related to antioxidants, especially those for management of mitochondrial dysfunction. The role of pharmacogenetics in the clinical management of drug-induced hepatotoxicity also likely merits further evaluation.
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Hinder LM, Murdock BJ, Park M, Bender DE, O'Brien PD, Rumora AE, Hur J, Feldman EL. Transcriptional networks of progressive diabetic peripheral neuropathy in the db/db mouse model of type 2 diabetes: An inflammatory story. Exp Neurol 2018; 305:33-43. [PMID: 29550371 DOI: 10.1016/j.expneurol.2018.03.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/14/2018] [Accepted: 03/13/2018] [Indexed: 12/13/2022]
Abstract
Diabetic peripheral neuropathy is the most common complication of diabetes and a source of considerable morbidity. Numerous molecular pathways are linked to neuropathic progression, but it is unclear whether these pathways are altered throughout the course of disease. Moreover, the methods by which these molecular pathways are analyzed can produce significantly different results; as such it is often unclear whether previously published pathways are viable targets for novel therapeutic approaches. In the current study we examine changes in gene expression patterns in the sciatic nerve (SCN) and dorsal root ganglia (DRG) of db/db diabetic mice at 8, 16, and 24 weeks of age using microarray analysis. Following the collection and verification of gene expression data, we utilized both self-organizing map (SOM) analysis and differentially expressed gene (DEG) analysis to detect pathways that were altered at all time points. Though there was some variability between SOM and DEG analyses, we consistently detected altered immune pathways in both the SCN and DRG over the course of disease. To support these results, we further used multiplex analysis to assess protein changes in the SCN of diabetic mice; we found that multiple immune molecules were upregulated at both early and later stages of disease. In particular, we found that matrix metalloproteinase-12 was highly upregulated in microarray and multiplex data sets suggesting it may play a role in disease progression.
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Affiliation(s)
- Lucy M Hinder
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Benjamin J Murdock
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Meeyoung Park
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Diane E Bender
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Phillipe D O'Brien
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Amy E Rumora
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Junguk Hur
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203-9037, USA
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA.
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Waldron AL, Schroder PA, Bourgon KL, Bolduc JK, Miller JL, Pellegrini AD, Dubois AL, Blaszkiewicz M, Townsend KL, Rieger S. Oxidative stress-dependent MMP-13 activity underlies glucose neurotoxicity. J Diabetes Complications 2018; 32:249-257. [PMID: 29306589 PMCID: PMC5820202 DOI: 10.1016/j.jdiacomp.2017.11.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND A complication of diabetes is neuropathy, a condition of sensory axon degeneration that originates in the epidermis. The mechanisms remain unknown but reactive oxygen species (ROS) have been implicated in this condition. In this study, we assessed the role of ROS and a candidate downstream target, MMP-13 in glucose-induced sensory axon degeneration in zebrafish and mice. METHODS The effects of glucose on metabolism and sensory axon degeneration were assessed using qPCR and live imaging. ROS were analyzed using pentafluorobenzene-sulfonyl fluorescein and activation of the NF-κB stress response was determined using Tg(NF-κB:GFP) zebrafish. The role of MMP-13 and ROS in glucose-dependent axon degeneration was determined in zebrafish following treatment with the antioxidant, N-acetylcysteine and the MMP-13 inhibitor, DB04760. Neuropathic mice fed on a high-fat/high-sugar diet were treated with the MMP-13 inhibitor, CL-82198 to assess sensory recovery. RESULTS Glucose treatment of zebrafish induced metabolic changes that resemble diabetes. Sensory axon degeneration was mediated by ROS-induced MMP-13 and prevented upon antioxidant treatment or MMP-13 inhibition. MMP-13 inhibition also reversed neuropathy in diabetic mice. CONCLUSION We demonstrate that zebrafish are suitable to study glucose-induced neurotoxicity. Given the effects in zebrafish and mice, MMP-13 inhibition may be beneficial in the treatment of human diabetic neuropathy.
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Affiliation(s)
- Ashley L Waldron
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - Patricia A Schroder
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - Kelly L Bourgon
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - Jessie K Bolduc
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - James L Miller
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - Adriana D Pellegrini
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
| | - Amanda L Dubois
- School of Biology and Ecology, Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME 04469, USA
| | - Magdalena Blaszkiewicz
- School of Biology and Ecology, Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME 04469, USA
| | - Kristy L Townsend
- School of Biology and Ecology, Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME 04469, USA
| | - Sandra Rieger
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Kathryn W. Davis Building 227, Old Bar Harbor Road, Salisbury Cove, ME 04672, USA.
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Gao W, Pu L, Wei J, Yao Z, Wang Y, Shi T, Zhao L, Jiao C, Guo C. Serum Antioxidant Parameters are Significantly Increased in Patients with Type 2 Diabetes Mellitus after Consumption of Chinese Propolis: A Randomized Controlled Trial Based on Fasting Serum Glucose Level. Diabetes Ther 2018; 9:101-111. [PMID: 29214374 PMCID: PMC5801227 DOI: 10.1007/s13300-017-0341-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Propolis is a natural product with many biological activities. The present study was designed to evaluate the effects of Chinese propolis on glucose metabolism, antioxidant function, and inflammatory cytokines in patients with type 2 diabetes mellitus (T2DM). METHODS In the 18-week study, recruited T2DM patients were randomly divided into a Chinese propolis group (900 mg/day) (n = 31) and a control group (n = 30) according to fasting serum glucose levels at baseline. RESULTS At the end of the study, no significant difference was found between the groups in serum glucose, glycosylated hemoglobin, insulin, aldose reductase, or adiponectin. However, serum GSH, flavonoids, and polyphenols were significantly increased, and serum lactate dehydrogenase activity was significantly reduced in the Chinese propolis group. Meanwhile, serum IL-6 was significantly increased in the Chinese propolis group. CONCLUSION Chinese propolis is effective at improving antioxidant function in T2DM patients, partly by increasing serum antioxidant parameters.
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Affiliation(s)
- Weina Gao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Lingling Pu
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China.
| | - Jingyu Wei
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Zhanxin Yao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Yawen Wang
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Tala Shi
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Liting Zhao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Changya Jiao
- Nutrition and Health Research Center, By-Health Ltd, Guangzhou, People's Republic of China
| | - Changjiang Guo
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China.
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Vural G, Bektas H, Gumusyayla S, Deniz O, Alışık M, Erel O. Impaired thiol-disulphide homeostasis in patients with axonal polyneuropathy. Neurol Res 2018; 40:166-172. [PMID: 29359643 DOI: 10.1080/01616412.2018.1428522] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE The objective of this study is to examine thiol-disulphide homeostasis in patients with polyneuropathy dominated by diabetic or non-diabetic axonal degeneration. MATERIALS-METHODS Fifty-four patients diagnosed with polyneuropathy dominated by axonal damage and 41 healthy subjects were included in the study. The patients were grouped into two groups according to whether or not they had diabetes. The native thiol and total thiol concentrations were measured with the newly developed automated method. RESULTS While there was no significant difference between the patients with diabetic and non-diabetic polyneuropathy in terms of native thiol and total thiol levels (p > 0.05), the native thiol and total thiol levels of the groups with both diabetic polyneuropathy and non-diabetic polyneuropathy were significantly low compared to the control group (p < 0.01). The level of disulphides in the patients with diabetic polyneuropathy was significantly higher than that of the patients with non-diabetic polyneuropathy and the healthy individuals (p < 0.05). The loss in the sural nerve sensory neural action potential amplitude was positively correlated with the decrease in the levels of both native thiol and total thiol (p < 0.05). DISCUSSION In our study, we observed that the thiol-disulphide balance was also impaired in patients with non-diabetic polyneuropathy similar to patients with diabetic polyneuropathy, and we therefore considered that impaired the thiol-disulphide homeostasis could be the last common path in patients with polyneuropathy with axonal damage, regardless of the aetiology. Therefore, fortification of thiol deficiency with N-acetyl cysteine or alpha-lipoic acid can fix the thiol-disulphide balance and help decelerate the axonal damage.
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Affiliation(s)
- Gonul Vural
- a Department of Neurology, School of Medicine , Yildirim Beyazit University , Ankara , Turkey
| | - Hesna Bektas
- a Department of Neurology, School of Medicine , Yildirim Beyazit University , Ankara , Turkey
| | - Sadiye Gumusyayla
- a Department of Neurology, School of Medicine , Yildirim Beyazit University , Ankara , Turkey
| | - Orhan Deniz
- a Department of Neurology, School of Medicine , Yildirim Beyazit University , Ankara , Turkey
| | - Murat Alışık
- b Department of Clinical Biochemistry , Atatürk Training and Research Hospital , Ankara , Turkey
| | - Ozcan Erel
- c Department of Clinical Biochemistry, School of Medicine , Yildirim Beyazit University , Ankara , Turkey
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Olukman M, Önal A, Celenk FG, Uyanıkgil Y, Cavuşoğlu T, Düzenli N, Ülker S. Treatment with NADPH oxidase inhibitor apocynin alleviates diabetic neuropathic pain in rats. Neural Regen Res 2018; 13:1657-1664. [PMID: 30127129 PMCID: PMC6126136 DOI: 10.4103/1673-5374.232530] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Increased reactive oxygen species by the activation of NADPH oxidase (NOX) contributes to the development of diabetic complications. Apocynin, a NOX inhibitor, increases sciatic nerve conductance and blood flow in diabetic rats. We investigated potential protective effect of apocynin in rat diabetic neuropathy and its precise mechanism of action at molecular level. Rat models of streptozotocin-induced diabetes were treated with apocynin (30 and 100 mg/kg per day, intragastrically) for 4 weeks. Mechanical hyperalgesia and allodynia were determined weekly using analgesimeter and dynamic plantar aesthesiometer. Western blot analysis and histochemistry/immunohistochemistry were performed in the lumbar spinal cord and sciatic nerve respectively. Streptozotocin injection reduced pain threshold in analgesimeter, but not in aesthesiometer. Apocynin treatment increased pain threshold dose-dependently. Western blot analysis showed an increase in catalase and NOX-p47phox protein expression in the spinal cord. However, protein expressions of neuronal and inducible nitric oxide synthase (nNOS, iNOS), superoxide dismutase, glutathion peroxidase, nitrotyrosine, tumor necrosis factor-α, interleukin-6, interleukin-1β, aldose reductase, cyclooxygenase-2 or MAC-1 (marker for increased microgliosis) in the spinal cord remained unchanged. Western blot analysis results also demonstrated that apocynin decreased NOX-p47phox expression at both doses and catalase expression at 100 mg/kg per day. Histochemistry of diabetic sciatic nerve revealed marked degeneration. nNOS and iNOS immunoreactivities were increased, while S-100 immunoreactivity (Schwann cell marker) was decreased in sciatic nerve. Apocynin treatment reversed these changes dose-dependently. In conclusion, decreased pain threshold of diabetic rats was accompanied by increased NOX and catalase expression in the spinal cord and increased degeneration in the sciatic nerve characterized by increased NOS expression and Schwann cell loss. Apocynin treatment attenuates neuropathic pain by decelerating the increased oxidative stress-mediated pathogenesis in diabetic rats.
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Affiliation(s)
- Murat Olukman
- Department of Pharmacology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
| | - Aytül Önal
- Department of Pharmacology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
| | - Fatma Gül Celenk
- Department of Medical Genetics, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
| | - Yiğit Uyanıkgil
- Department of Histology and Embryology, Faculty of Medicine, Cord Blood, Cell and Tissue Research and Application Center, Ege University, Bornova, Izmir, Turkey
| | - Türker Cavuşoğlu
- Department of Histology and Embryology, Faculty of Medicine, Cord Blood, Cell and Tissue Research and Application Center, Ege University, Bornova, Izmir, Turkey
| | - Neslihan Düzenli
- Department of Pharmacology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
| | - Sibel Ülker
- Department of Pharmacology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
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Zhang SY, Yang KL, Zeng LT, Wu XH, Huang HY. Effectiveness of Coenzyme Q10 Supplementation for Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis. Int J Endocrinol 2018; 2018:6484839. [PMID: 30305810 PMCID: PMC6165589 DOI: 10.1155/2018/6484839] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/26/2018] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE To evaluate the effectiveness and safety of coenzyme Q10 for patients with type 2 diabetes mellitus (T2DM). METHODS Data from randomized controlled trials were obtained to assess the effects of coenzyme Q10 versus placebo or western medicine on patients with T2DM. The study's registration number is CRD42018088474. The primary outcomes included glycosylated hemoglobin, fasting blood glucose, and fasting insulin. RESULT Thirteen trials involving 765 patients were included. Compared with the control group, coenzyme Q10 may decrease the HbA1c (WMD -0.29; 95% CI -0.54, -0.03; P = 0.03) and the fasting blood glucose (WMD -11.21; 95% CI -18.99, -3.43; P = 0.005). For fasting insulin, there is also not strong evidence that confirms which one is better because there was no statistical difference (WMD -0.48; 95% CI -2.54, 1.57; P = 0.65). CONCLUSION Based on current evidence, coenzyme Q10 may assist glycemic control, decrease TG, and improve HDL-C in patients with T2DM.
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Affiliation(s)
- Shi-ying Zhang
- Hunan University of Chinese Medicine, Changsha 410208, China
- Jiangxi Provincial People's Hospital, Nanchang 330006, China
| | - Kai-lin Yang
- Hunan University of Chinese Medicine, Changsha 410208, China
| | - Liu-ting Zeng
- Hunan University of Chinese Medicine, Changsha 410208, China
| | - Xiao-he Wu
- Jiangxi Provincial People's Hospital, Nanchang 330006, China
| | - Hui-yong Huang
- Hunan University of Chinese Medicine, Changsha 410208, China
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Lebigot E, Gaignard P, Dorboz I, Slama A, Rio M, de Lonlay P, Héron B, Sabourdy F, Boespflug-Tanguy O, Cardoso A, Habarou F, Ottolenghi C, Thérond P, Bouton C, Golinelli-Cohen MP, Boutron A. Impact of mutations within the [Fe-S] cluster or the lipoic acid biosynthesis pathways on mitochondrial protein expression profiles in fibroblasts from patients. Mol Genet Metab 2017; 122:85-94. [PMID: 28803783 DOI: 10.1016/j.ymgme.2017.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/01/2017] [Accepted: 08/01/2017] [Indexed: 12/24/2022]
Abstract
Lipoic acid (LA) is the cofactor of the E2 subunit of mitochondrial ketoacid dehydrogenases and plays a major role in oxidative decarboxylation. De novo LA biosynthesis is dependent on LIAS activity together with LIPT1 and LIPT2. LIAS is an iron‑sulfur (Fe-S) cluster-containing mitochondrial protein, like mitochondrial aconitase (mt-aco) and some subunits of respiratory chain (RC) complexes I, II and III. All of them harbor at least one [Fe-S] cluster and their activity is dependent on the mitochondrial [Fe-S] cluster (ISC) assembly machinery. Disorders in the ISC machinery affect numerous Fe-S proteins and lead to a heterogeneous group of diseases with a wide variety of clinical symptoms and combined enzymatic defects. Here, we present the biochemical profiles of several key mitochondrial [Fe-S]-containing proteins in fibroblasts from 13 patients carrying mutations in genes encoding proteins involved in either the lipoic acid (LIPT1 and LIPT2) or mitochondrial ISC biogenesis (FDX1L, ISCA2, IBA57, NFU1, BOLA3) pathway. Ten of them are new patients described for the first time. We confirm that the fibroblast is a good cellular model to study these deficiencies, except for patients presenting mutations in FDX1L and a muscular clinical phenotype. We find that oxidative phosphorylation can be affected by LA defects in LIPT1 and LIPT2 patients due to excessive oxidative stress or to another mechanism connecting LA and respiratory chain activity. We confirm that NFU1, BOLA3, ISCA2 and IBA57 operate in the maturation of [4Fe-4S] clusters and not in [2Fe-2S] protein maturation. Our work suggests a functional difference between IBA57 and other proteins involved in maturation of [Fe-S] proteins. IBA57 seems to require BOLA3, NFU1 and ISCA2 for its stability and NFU1 requires BOLA3. Finally, our study establishes different biochemical profiles for patients according to their mutated protein.
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Affiliation(s)
- E Lebigot
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France; Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette cedex, France
| | - P Gaignard
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France
| | - I Dorboz
- Inserm U1141, Paris Diderot University, Sorbonne Paris Cité, DHU PROTECT, Hôpital Robert Debré, Paris, France
| | - A Slama
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France
| | - M Rio
- Reference Center of Inherited Metabolic Diseases, Hôpital Necker Enfants Malades, Institut Imagine, Assistance Publique - Hôpitaux de Paris, Université Paris-Descartes, 75015 Paris, France
| | - P de Lonlay
- Reference Center of Inherited Metabolic Diseases, Hôpital Necker Enfants Malades, Institut Imagine, Assistance Publique - Hôpitaux de Paris, Université Paris-Descartes, 75015 Paris, France
| | - B Héron
- Neuropediatrics Department, Hôpital Trousseau, Assistance Publique - Hôpitaux de Paris, 75012 Paris, GCR Concer-LD Sorbonne Universités UPMC, Univ 06, Paris, France
| | - F Sabourdy
- Metabolic Biochemistry Department, Hôpital des Enfants, 31059 Toulouse cedex, France
| | - O Boespflug-Tanguy
- Inserm U1141, Paris Diderot University, Sorbonne Paris Cité, DHU PROTECT, Hôpital Robert Debré, Paris, France; Neuropediatrics Department, Hôpital Robert Debré, Assistance Publique - Hôpitaux de Paris, 75019 Paris, France
| | - A Cardoso
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France
| | - F Habarou
- Metabolic Biochemistry Department, Hôpital Necker Enfants Malades, Assistance Publique - Hôpitaux de Paris, 75015 Paris, France
| | - C Ottolenghi
- Metabolic Biochemistry Department, Hôpital Necker Enfants Malades, Assistance Publique - Hôpitaux de Paris, 75015 Paris, France
| | - P Thérond
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France
| | - C Bouton
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette cedex, France
| | - M P Golinelli-Cohen
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette cedex, France
| | - A Boutron
- Biochemistry Department, Hôpital de Bicêtre, Hôpitaux universitaires Paris-Sud, Assistance Publique - Hôpitaux de Paris, 94270 Le Kremlin Bicêtre, France.
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125
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Lotfipour S, Smith MT. Morphine hyposensitivity in streptozotocin-diabetic rats: Reversal by dietary l
-arginine treatment. Clin Exp Pharmacol Physiol 2017; 45:42-49. [DOI: 10.1111/1440-1681.12855] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/08/2017] [Accepted: 09/11/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Shahrdad Lotfipour
- School of Pharmacy; Faculty of Health and Behavioural Sciences; The University of Queensland; Brisbane Qld Australia
| | - Maree T. Smith
- School of Pharmacy; Faculty of Health and Behavioural Sciences; The University of Queensland; Brisbane Qld Australia
- Centre for Integrated Preclinical Drug Development; UQ Centre for Clinical Research; Faculty of Medicine; The University of Queensland; Brisbane Qld Australia
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126
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127
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Nouwen A, Chambers A, Chechlacz M, Higgs S, Blissett J, Barrett TG, Allen HA. Microstructural abnormalities in white and gray matter in obese adolescents with and without type 2 diabetes. NEUROIMAGE-CLINICAL 2017; 16:43-51. [PMID: 28752059 PMCID: PMC5514690 DOI: 10.1016/j.nicl.2017.07.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 06/24/2017] [Accepted: 07/03/2017] [Indexed: 01/15/2023]
Abstract
Aims/hypotheses In adults, type 2 diabetes and obesity have been associated with structural brain changes, even in the absence of dementia. Some evidence suggested similar changes in adolescents with type 2 diabetes but comparisons with a non-obese control group have been lacking. The aim of the current study was to examine differences in microstructure of gray and white matter between adolescents with type 2 diabetes, obese adolescents and healthy weight adolescents. Methods Magnetic resonance imaging data were collected from 15 adolescents with type 2 diabetes, 21 obese adolescents and 22 healthy weight controls. Volumetric differences in the gray matter between the three groups were examined using voxel based morphology, while tract based spatial statistics was used to examine differences in the microstructure of the white matter. Results Adolescents with type 2 diabetes and obese adolescents had reduced gray matter volume in the right hippocampus, left putamen and caudate, bilateral amygdala and left thalamus compared to healthy weight controls. Type 2 diabetes was also associated with significant regional changes in fractional anisotropy within the corpus callosum, fornix, left inferior fronto-occipital fasciculus, left uncinate, left internal and external capsule. Fractional anisotropy reductions within these tracts were explained by increased radial diffusivity, which may suggest demyelination of white matter tracts. Mean diffusivity and axial diffusivity did not differ between the groups. Conclusion/interpretation Our data shows that adolescent obesity alone results in reduced gray matter volume and that adolescent type 2 diabetes is associated with both white and gray matter abnormalities. Type 2 diabetes and obesity in adolescents is associated with reduced gray matter volume. Type 2 diabetes was associated with significant regional changes in FA. FA reductions within these tracts were explained by increased RD. Mean diffusivity and axial diffusivity did not differ between the groups.
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Affiliation(s)
- Arie Nouwen
- School of Psychology, University of Birmingham, Birmingham, UK
| | - Alison Chambers
- School of Psychology, University of Birmingham, Birmingham, UK
| | | | - Suzanne Higgs
- School of Psychology, University of Birmingham, Birmingham, UK
| | | | | | - Harriet A Allen
- School of Psychology, University of Birmingham, Birmingham, UK
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128
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Meng Y, Eirin A, Zhu XY, Tang H, Chanana P, Lerman A, Van Wijnen AJ, Lerman LO. The metabolic syndrome alters the miRNA signature of porcine adipose tissue-derived mesenchymal stem cells. Cytometry A 2017; 93:93-103. [PMID: 28678424 DOI: 10.1002/cyto.a.23165] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/24/2017] [Accepted: 06/15/2017] [Indexed: 01/08/2023]
Abstract
Autologous transplantation of mesenchymal stem cells (MSCs) is a viable option for the treatment of several diseases. Evidence indicates that MSCs release extracellular vesicles (EVs) and that EVs shuttle miRNAs to damaged parenchymal cells to activate an endogenous repair program. We hypothesize that comorbidities may interfere with the packaging of cargo in MSC-derived EVs. Therefore, we examined whether metabolic syndrome (MetS) modulates the miRNA content packed within MSC-derived EVs. MSCs were collected from swine abdominal adipose tissue after 16 weeks of lean or obese diet (n = 7 each). Next-generation RNA sequencing of miRNAs (miRNA-seq) was performed to identify miRNAs enriched in MSC-derived EVs and their predicted target genes. Functional pathway analysis of the top 50 target genes of the top 4 miRNAs enriched in each group was performed using gene ontology analysis. Lean- and MetS-EVs were enriched in, respectively, 14 and 8 distinct miRNAs. Target genes of miRNAs enriched in MetS-EVs were implicated in the development of MetS and its complications, including diabetes-related pathways, validated transcriptional targets of AP1 family members Fra1 and Fra2, Class A/1 (Rhodopsin-like receptors), and Peptide ligand-binding receptors. In contrast, miRNAs enriched in Lean EVs target primarily EphrinA-EPHA and the Rho family of GTPases. MetS alters the miRNA content of EVs derived from porcine adipose tissue MSCs. These alterations could impair the efficacy and limit the therapeutic use of autologous MSCs in subjects with MetS. Our findings may assist in developing adequate regenerative strategies to preserve the reparative potency of MSCs in individuals with MetS. © 2017 International Society for Advancement of Cytometry.
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Affiliation(s)
- Yu Meng
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.,Department of Nephrology, the First Hospital Affiliated to Jinan University, Guangzhou, 510630, China
| | - Alfonso Eirin
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Xiang-Yang Zhu
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Hui Tang
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Pritha Chanana
- Division of Health Sciences Research & Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Amir Lerman
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | | | - Lilach O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.,Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
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129
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Biochemical and clinical relevance of alpha lipoic acid: antioxidant and anti-inflammatory activity, molecular pathways and therapeutic potential. Inflamm Res 2017; 66:947-959. [PMID: 28676917 DOI: 10.1007/s00011-017-1079-6] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The molecular nature of lipoic acid (LA) clarifies its capability of taking part to a variety of biochemical reactions where redox state is meaningful. The pivotal action of LA is the antioxidant activity due to its ability to scavenge and inactivate free radicals. Furthermore, LA has been shown to chelate toxic metals both directly and indirectly by its capability to enhance intracellular glutathione (GSH) levels. This last property is due to its ability to interact with GSH and recycle endogenous GSH. LA exhibits significant antioxidant activity protecting against oxidative damage in several diseases, including neurodegenerative disorders. Interestingly, LA is unique among natural antioxidants for its capability to satisfy a lot of requirements, making it a potentially highly effective therapeutic agent for many conditions related with oxidative damage. In particular, there are evidences showing that LA has therapeutic activity in lowering glucose levels in diabetic conditions. Similarly, LA supplementation has multiple beneficial effects on the regression of the mitochondrial function and on oxidative stress associated with several diseases and aging. AIM The aim of the present review is to describe the molecular mechanisms underlying the beneficial effects of LA under various experimental conditions and disease and how to exploit such effect for clinical purposes. CONCLUSION LA has pleiotropic effects in different pathways related with several diseases, its use as a potential therapeutic agent is very promising.
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Abstract
Both Alzheimer's disease (AD) and type 2 diabetes mellitus (DM) are two common
forms of disease worldwide and many studies indicate that people with diabetes,
especially DM, are at higher risk of developing AD. AD is characterized by
progressive cognitive decline and accumulation of β-amyloid (Aβ)
forming senile plaques. DM is a metabolic disorder characterized by
hyperglycemia in the context of insulin resistance and relative lack of insulin.
Both diseases also share common characteristics such as loss of cognitive
function and inflammation. Inflammation resulting from Aβ further induces
production of Aβ1-42 peptides. Inflammation due to
overnutrition induces insulin resistance and consequently DM. Memory deficit and
a decrease in GLUT4 and hippocampal insulin signaling have been observed in
animal models of insulin resistance. The objective of this review was to show
the shared characteristics of AD and DM.
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Affiliation(s)
- Aparecida Marcelino de Nazareth
- Physiotherapist, Specialist in Neurofunctional Physical Therapy, Master of Neurosciences from the (UFSC), SC, Brazil, and PhD in Sciences (Pharmacology and Medicinal Chemistry) from the Federal University of Rio de Janeiro (UFRJ), RJ, Brazil
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131
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Li G, Zhou F, Chen Y, Zhang W, Wang N. Kukoamine A attenuates insulin resistance and fatty liver through downregulation of Srebp-1c. Biomed Pharmacother 2017; 89:536-543. [PMID: 28254666 DOI: 10.1016/j.biopha.2017.02.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/06/2017] [Accepted: 02/08/2017] [Indexed: 01/17/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) refers to a pathological condition of hepatic steatosis. Insulin resistance is believed to be the key mechanism mediating initial accumulation of fat in the liver, resulting in hepatic steatosis. Kukoamine A (KuA), a spermine alkaloid, is a major bioactive component extracted from the root barks of Lycium chinense (L. chinense) Miller. In the current study, we aimed to explore the possible effect of KuA on insulin resistance and fatty liver. We showed that KuA significantly inhibited the increase of fasting blood glucose level and insulin level, and the glucose levels in response to glucose and insulin load in HFD-fed mice, which was in a dose-dependent manner. KuA dose-dependently decreased the histological injury of liver, levels of hepatic triglyceride (TG), and serum AST and ALT activities in HFD-fed mice. The increase of serum levels of TNFɑ, IL-1β, IL-6 and C reactive protein in HFD-fed mice was inhibited by KuA. HFD feeding-induced increase of hepatic expression of Srebp-1c and its target genes, including fatty acid synthase (FAS) and acetyl CoA carboxylase 1 (ACC1), was significantly inhibited by KuA. Moreover, upregulation of Srebp-1c notably inhibited KuA-induced improvement of insulin-stimulated glucose uptake, decrease of lipid accumulation and H2O2 level in palmitic acid-treated AML-12 cells. In conclusion, we reported that KuA inhibited Srebp-1c and downstream genes expression and resulted in inhibition of lipid accumulation, inflammation, insulin resistance and oxidative stress. Overall, our results provide a better understanding of the pharmacological activities of KuA against insulin resistance and hepatic steatosis.
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Affiliation(s)
- Guangyun Li
- Department of Pharmacy, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China.
| | - Fang Zhou
- Department of Pharmacy, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Ying Chen
- Department of Pharmacy, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Weiguo Zhang
- Department of Pharmacy, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Ning Wang
- Department of Pharmacy, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
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Asadi-Samani M, Moradi MT, Mahmoodnia L, Alaei S, Asadi-Samani F, Luther T. Traditional uses of medicinal plants to prevent and treat diabetes; an updated review of ethnobotanical studies in Iran. J Nephropathol 2017; 6:118-125. [PMID: 28975089 PMCID: PMC5607970 DOI: 10.15171/jnp.2017.20] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/28/2016] [Indexed: 01/02/2023] Open
Abstract
Background:
Obesity and physical inactivity are currently on the rise due to industrialization of the communities, which has recently led to increased incidence of different diseases such as diabetes. Epidemiological studies and figures have demonstrated the growing incidence of diabetes. Relevantly, the side effects of chemical drugs have led patients to use medicinal plants and traditional approaches despite advances in development of chemical drugs. The aim of this review article is to report the medicinal plants and their traditional uses to prevent and treat diabetes according to the findings of ethnobotanical studies conducted in different regions of Iran.
Evidence Acquisitions:
The search terms including ethnobotany, ethnomedicine, ethnopharmacology, phytopharmacology, phytomedicine, Iran, and traditional medicine in combination with diabetes, blood sugar and hyperglycemic were searched from scientific databases.
Results:
The results of this article can be a comprehensive guideline, based on ethnobotany of different regions of Iran, to prevent and treat diabetes. According to this review article, certain plant species such as Urtica dioica L., popularly called nettle, in eight regions, Teucrium polium L., popularly called poleigamander, in five regions, and Trigonella foenum-graecum L., Citrullus colocynthis (L.), Schrad., and Juglans regia L. in four regions, were reported to be frequently used to prevent and treat diabetes
Conclusions:
The introduced medicinal plants in this review can be investigated in further research and produce new drugs with limited side effects
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Affiliation(s)
- Majid Asadi-Samani
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mohammad-Taghi Moradi
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Leila Mahmoodnia
- Department of Internal Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Shahla Alaei
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Fatemeh Asadi-Samani
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Tahra Luther
- Department of General Surgery, University of Michigan, Ann Arbor, Michigan, USA
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