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Holm NCR, Belstrøm D, Østergaard JA, Schou S, Holmstrup P, Grauballe MB. Identification of Individuals With Undiagnosed Diabetes and Pre-Diabetes in a Danish Cohort Attending Dental Treatment. J Periodontol 2016; 87:395-402. [DOI: 10.1902/jop.2016.150266] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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252
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Ghadge A, Harsulkar A, Karandikar M, Pandit V, Kuvalekar A. Comparative anti-inflammatory and lipid-normalizing effects of metformin and omega-3 fatty acids through modulation of transcription factors in diabetic rats. GENES AND NUTRITION 2016; 11:10. [PMID: 27551311 PMCID: PMC4968436 DOI: 10.1186/s12263-016-0518-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 12/11/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Emerging evidence suggests beneficial effects of omega-3 fatty acids on diabetic complications. The present study compared the progressive effects of metformin and flax/fish oil on lipid metabolism, inflammatory markers, and liver and renal function test markers in streptozotocin-nicotinamide-induced diabetic rats. METHODS Streptozotocin-induced diabetic rats were randomized into control and four diabetic groups: streptozotocin (STZ), metformin (200 mg/kg body weight (b.w)/day (D)), flax and fish oil (500 mg/kg b.w/D). RESULTS Metformin and flax and fish oil exhibited increased expression of transcription factor peroxisome proliferator-activated receptor γ while the treatment downregulated sterol regulatory element-binding protein 1 and nuclear factor kβ as compared to those of the STZ group. Apart from modulation of transcription factor expression, the expression of fatty acid synthase, long chain acyl CoA synthase, and malonyl-CoA-acyl carrier protein transacylase was lowered by flax/fish oil treatment. Serum cholesterol, triglycerides, and VLDL were also significantly reduced in the treatment groups as compared to those in the STZ group. Although pathological abnormalities were seen in the liver and kidneys of rats on metformin, no significant changes in liver/renal function markers were observed at day 15 and day 30 of the treatment groups. Flax/fish oil had protective effects toward pathological abnormalities in the liver and kidney. Flax/fish oil improved lipid profile and alkaline phosphatase at day 30 as compared to that at day 15. CONCLUSIONS The present study demonstrates potential beneficial effects of metformin and flax/fish oil intervention in improving serum lipid profile by regulating the expression of transcription factors and genes involved in lipid metabolism in diabetic rats. In addition, these interventions also lowered the expression of atherogenic cytokines. The protective effects of flax/fish oil are worth investigating in human subjects on metformin monotherapy.
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Affiliation(s)
- Abhijit Ghadge
- Nutrigenomics and Functional Foods Laboratory, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, Maharashtra 411043 India
| | - Abhay Harsulkar
- Nutrigenomics and Functional Foods Laboratory, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, Maharashtra 411043 India
| | - Manjiri Karandikar
- Department of Pathology, Bharati Vidyapeeth Medical College, Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, Maharashtra 411043 India
| | - Vijaya Pandit
- Department of Pharmacology, Bharati Vidyapeeth Medical College, Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, Maharashtra 411043 India
| | - Aniket Kuvalekar
- Nutrigenomics and Functional Foods Laboratory, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, Maharashtra 411043 India
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Nabavi SF, Barber AJ, Spagnuolo C, Russo GL, Daglia M, Nabavi SM, Sobarzo-Sánchez E. Nrf2 as molecular target for polyphenols: A novel therapeutic strategy in diabetic retinopathy. Crit Rev Clin Lab Sci 2016; 53:293-312. [PMID: 26926494 DOI: 10.3109/10408363.2015.1129530] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetic retinopathy is a microvascular complication of diabetes that is considered one of the leading causes of blindness among adults. More than 4.4 million people suffer from this disorder throughout the world. Growing evidence suggests that oxidative stress plays a crucial role in the pathophysiology of diabetic retinopathy. Nuclear factor erythroid 2-related factor 2 (Nrf2), a redox sensitive transcription factor, plays an essential protective role in regulating the physiological response to oxidative and electrophilic stress via regulation of multiple genes encoding antioxidant proteins and phase II detoxifying enzymes. Many studies suggest that dozens of natural compounds, including polyphenols, can supress oxidative stress and inflammation through targeting Nrf2 and consequently activating the antioxidant response element-related cytoprotective genes. Therefore, Nrf2 may provide a new therapeutic target for treatment of diabetic retinopathy. In the present article, we will focus on the role of Nrf2 in diabetic retinopathy and the ability of polyphenols to target Nrf2 as a therapeutic strategy.
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Affiliation(s)
- Seyed Fazel Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Alistair J Barber
- b Department of Ophthalmology , Penn State Hershey Eye Center, Penn State Hershey College of Medicine , Hershey , PA , USA
| | - Carmela Spagnuolo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Gian Luigi Russo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Maria Daglia
- d Department of Drug Sciences , Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia , Pavia , Italy , and
| | - Seyed Mohammad Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Eduardo Sobarzo-Sánchez
- e Laboratory of Pharmaceutical Chemistry , Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago De Compostela , Santiago De Compostela , Spain
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Bessaguet F, Magy L, Desmoulière A, Demiot C. The therapeutic potential of renin angiotensin aldosterone system (RAAS) in chronic pain: from preclinical studies to clinical trials. Expert Rev Neurother 2016; 16:331-9. [DOI: 10.1586/14737175.2016.1150179] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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255
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Berberine relieves insulin resistance via the cholinergic anti-inflammatory pathway in HepG2 cells. ACTA ACUST UNITED AC 2016; 36:64-69. [DOI: 10.1007/s11596-016-1543-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/28/2015] [Indexed: 11/27/2022]
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256
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Liu YJ, Lian ZY, Liu G, Zhou HY, Yang HJ. RNA sequencing reveals retinal transcriptome changes in STZ-induced diabetic rats. Mol Med Rep 2016; 13:2101-9. [PMID: 26781437 PMCID: PMC4768987 DOI: 10.3892/mmr.2016.4793] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 12/11/2015] [Indexed: 02/05/2023] Open
Abstract
The present study aimed to investigate changes in retinal gene expression in streptozotocin (STZ)‑induced diabetic rats using next‑generation sequencing, utilize transcriptome signatures to investigate the molecular mechanisms of diabetic retinopathy (DR), and identify novel strategies for the treatment of DR. Diabetes was chemically induced in 10‑week‑old male Sprague‑Dawley rats using STZ. Flash‑electroretinography (F‑ERG) was performed to evaluate the visual function of the rats. The retinas of the rats were removed to perform high throughput RNA sequence (RNA‑seq) analysis. The a‑wave, b‑wave, oscillatory potential 1 (OP1), OP2 and ∑OP amplitudes were significantly reduced in the diabetic group, compared with those of the control group (P<0.05). Furthermore, the implicit b‑wave duration 16 weeks post‑STZ induction were significantly longer in the diabetic rats, compared with the control rats (P<0.001). A total of 868 genes were identified, of which 565 were upregulated and 303 were downregulated. Among the differentially expressed genes (DEGs), 94 apoptotic genes and apoptosis regulatory genes, and 19 inflammatory genes were detected. The results of the KEGG pathway significant enrichment analysis revealed enrichment in cell adhesion molecules, complement and coagulation cascades, and antigen processing and presentation. Diabetes alters several transcripts in the retina, and RNA‑seq provides novel insights into the molecular mechanisms underlying DR.
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Affiliation(s)
- Yuan-Jie Liu
- Department of Human Anatomy, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhi-Yun Lian
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Geng Liu
- Department of Human Anatomy, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hong-Ying Zhou
- Department of Human Anatomy, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hui-Jun Yang
- Department of Human Anatomy, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Fathy SM, Drees EA. Protective effects of Egyptian cloudy apple juice and apple peel extract on lipid peroxidation, antioxidant enzymes and inflammatory status in diabetic rat pancreas. Altern Ther Health Med 2016; 16:8. [PMID: 26753525 PMCID: PMC4707737 DOI: 10.1186/s12906-015-0957-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 12/03/2015] [Indexed: 12/19/2022]
Abstract
Background Apples possess rich content of varied polyphenolic compounds showing a variety of biological activities that may ascribe to worthy effects against some chronic diseases. The present study was designed to assess the protective effects of the cloudy apple juice (CAJ) and apple peel extract (APE) of Egyptian Anna apple on the complications in experimental diabetes. Materials and methods Four groups were studied. Diabetes was induced by a single dose of streptozotocin (STZ) to only three groups of albino Wistar rats. Two of the diabetic groups received either CAJ or APE for 21 days. At the end of the study, lipid profile parameters were measured in serum while lipid peroxidation (LPO) level, antioxidant enzyme activities and inflammatory markers were evaluated in pancreas tissue samples. The gas chromatography–mass spectrometry (GC-MS) analysis of phenolic compounds found in CAJ and APE was carried out. Moreover, total phenolic content of CAJ and APE were measured. Results The significant increase of blood glucose level, serum total cholesterol (TC), triglycerides (TG), low- density lipoprotein cholesterol (LDL-C), and very low-density lipoprotein (VLDL) levels, in addition to tissue malondialdehyde (MDA), nuclear factor kappa B (NF-kB), tumor necrosis factor α (TNF-α), interleukin 6 (IL-6), interleukin 8 (IL-8) levels, but a significant decrease in high-density lipoprotein cholesterol (HDL-C), and the activity of pancreatic antioxidant enzymes were the remarkably parameters observed in diabetic control rats. Dissimilarly, oral supplementation of 15 ml/kg CAJ and 1 g/kg APE for 21 days resulted in a significant decrease in fasting blood glucose, serum TC, TG, LDL-C, VLDL-C and tissue MDA, NF-kB, TNF-α, IL-6, IL-8 levels coupled with a significant elevation of HDL-C and antioxidant enzymes’ activity when compared with diabetic control animals. Conclusions The results indicate that Egyptian CAJ and APE supplementation may have protective effects against deleterious complications of diabetes mellitus.
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259
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Acharya AB, Thakur S, Muddapur MV, Kulkarni RD. Tumor necrosis factor-α, interleukin-4 and -6 in the serum of health, chronic periodontitis, and type 2 diabetes mellitus. J Indian Soc Periodontol 2016; 20:509-513. [PMID: 29242686 PMCID: PMC5676332 DOI: 10.4103/0972-124x.201694] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background Cytokines are significant in the development and progression of chronic periodontitis (ChP) and type 2 diabetes mellitus (DT2). Insufficient information is available regarding the pro- versus anti-inflammatory cytokines in ChP's influence on systemic levels of cytokines on DT2. This study investigated the levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-4 and IL-6 in the serum of patients with ChP, DT2, and with both ChP and DT2, as compared to health. Materials and Methods A total of eighty participants were grouped equally groups as healthy (NH), ChP with, and without DT2 (ChP and ChP + DT2) and only type 2 diabetes (DT2). Plaque and gingival indices, bleeding on probing, pocket probing depths, clinical attachment loss, were evaluated. Serum samples were collected to measure glycated hemoglobin, random blood sugar. TNF-α, IL-4 and -6 was assessed by ELISA. Results The selected cytokines were detected in all the participants. TNF-α and IL-6 were highest in ChP + DT2 group, whereas IL-4 was highest in health. Significant differences and correlation were observed between the cytokines, periodontal, and glycemic parameters and among the four groups. Conclusion TNF-α and IL-6 appear to heighten the inflammatory state in patients with both type 2 diabetes and periodontitis, but IL-4, though considered an anti-inflammatory mediator was not convincing in such a role in this study. The cytokine behavior needs to be studied further in larger studies.
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Affiliation(s)
| | - Srinath Thakur
- Department of Periodontics, S.D.M. College of Medical Sciences and Hospital, Dharwad, Karnataka, India
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260
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Chen W, Guo J, Zhang Y, Zhang J. The beneficial effects of taurine in preventing metabolic syndrome. Food Funct 2016; 7:1849-63. [DOI: 10.1039/c5fo01295c] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A review of the data fromin vitro, animal and limited human studies of the beneficial effects of taurine on obesity, dyslipidaemia, diabetes mellitus and hypertension, as well as the possible metabolic and molecular mechanisms for the prevention of metabolic syndrome by taurine.
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Affiliation(s)
- Wen Chen
- Beijing Key Laboratory of Bioactive Substances and Functional Foods
- Beijing Union University
- Beijing 100191
- P.R. China
| | - Junxia Guo
- Beijing Key Laboratory of Bioactive Substances and Functional Foods
- Beijing Union University
- Beijing 100191
- P.R. China
| | - Yanzhen Zhang
- Beijing Key Laboratory of Bioactive Substances and Functional Foods
- Beijing Union University
- Beijing 100191
- P.R. China
| | - Jing Zhang
- Beijing Key Laboratory of Bioactive Substances and Functional Foods
- Beijing Union University
- Beijing 100191
- P.R. China
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261
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Qiao YC, Shen J, He L, Hong XZ, Tian F, Pan YH, Liang L, Zhang XX, Zhao HL. Changes of Regulatory T Cells and of Proinflammatory and Immunosuppressive Cytokines in Patients with Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis. J Diabetes Res 2016; 2016:3694957. [PMID: 27777959 PMCID: PMC5061980 DOI: 10.1155/2016/3694957] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 08/09/2016] [Accepted: 08/30/2016] [Indexed: 12/18/2022] Open
Abstract
Objective. The aim of this study was to investigate the changes of regulatory T cells (Treg), interleukin-6 (IL-6), IL-10, transforming growth factor-β (TGF-β), and tumor necrosis factor-alpha (TNF-α) in patients with type 2 diabetes mellitus (T2DM). Methods. We performed a comprehensive search up to July 2016 for all clinical studies about the changes of Treg, IL-6, IL-10, IL-17, TGF-β, and TNF-α in T2DM patients versus healthy controls. Results. A total of 91 articles (5642 cases and 7378 controls) were included for this meta-analysis. Compared with the controls (all p < 0.001), the patients had increased serum levels of IL-6, TGF-β, and TNF-α but decreased the percentage of peripheral CD4+CD25+Foxp3+Treg and serum IL-10 level. Furthermore, the percentage of peripheral CD4+CD25+Foxp3+Treg (p < 0.001) and serum IL-10 level (p = 0.033) were significantly lower in the patients with complication and in the patients without complication, respectively. No significant changes about the percentage of CD4+CD25+Treg (p = 0.360) and serum IL-17 level (p = 0.459) were found in T2DM patients. Conclusions. T2DM patients have decreased the percentage of peripheral CD4+CD25+Foxp3+Treg and levels of serum IL-10 but elevated serum levels of IL-6, TGF-β, and TNF-α. Presence of diabetic complications further lowers the peripheral CD4+CD25+Foxp3+Treg number.
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Affiliation(s)
- Yong-chao Qiao
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
- Department of Immunology, School of Basic Medical Sciences, Central South University, Changsha, Hunan 410078, China
| | - Jian Shen
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
| | - Lan He
- Department of Microbiology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Xue-zhi Hong
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
| | - Fang Tian
- Department of Immunology, School of Basic Medical Sciences, Central South University, Changsha, Hunan 410078, China
| | - Yan-hong Pan
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
| | - Ling Liang
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
| | - Xiao-xi Zhang
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
- Department of Immunology, Faculty of Basic Medicine, Guilin Medical University, Guilin 541004, China
| | - Hai-lu Zhao
- Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541004, China
- Department of Immunology, School of Basic Medical Sciences, Central South University, Changsha, Hunan 410078, China
- Department of Immunology, Faculty of Basic Medicine, Guilin Medical University, Guilin 541004, China
- *Hai-lu Zhao:
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262
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Omi M, Hata M, Nakamura N, Miyabe M, Kobayashi Y, Kamiya H, Nakamura J, Ozawa S, Tanaka Y, Takebe J, Matsubara T, Naruse K. Transplantation of dental pulp stem cells suppressed inflammation in sciatic nerves by promoting macrophage polarization towards anti-inflammation phenotypes and ameliorated diabetic polyneuropathy. J Diabetes Investig 2015; 7:485-96. [PMID: 27181261 PMCID: PMC4931198 DOI: 10.1111/jdi.12452] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/17/2015] [Accepted: 11/19/2015] [Indexed: 12/28/2022] Open
Abstract
Aims/Introduction Dental pulp stem cells (DPSCs) are thought to be an attractive candidate for cell therapy. We recently reported that the transplantation of DPSCs increased nerve conduction velocity and nerve blood flow in diabetic rats. In the present study, we investigated the immunomodulatory effects of DPSC transplantation on diabetic peripheral nerves. Materials and Methods DPSCs were isolated from the dental pulp of Sprague–Dawley rats and expanded in culture. Eight weeks after the streptozotocin injection, DPSCs were transplanted into the unilateral hindlimb skeletal muscles. Four weeks after DPSC transplantation, neurophysiological measurements, inflammatory gene expressions and the number of CD68‐positive cells in sciatic nerves were assessed. To confirm the immunomodulatory effects of DPSCs, the effects of DPSC‐conditioned media on lipopolysaccharide‐stimulated murine macrophage RAW264.7 cells were investigated. Results Diabetic rats showed significant delays in sciatic nerve conduction velocities and decreased sciatic nerve blood flow, all of which were ameliorated by DPSC transplantation. The number of CD68‐positive monocytes/macrophages and the gene expressions of M1 macrophage‐expressed cytokines, tumor necrosis factor‐α and interleukin‐1β, were increased in the sciatic nerves of the diabetic rats. DPSC transplantation significantly decreased monocytes/macrophages and tumor necrosis factor‐α messenger ribonucleic acid expression, and increased the gene expression of the M2 macrophage marker, CD206, in the sciatic nerves of the diabetic rats. The in vitro study showed that DPSC‐conditioned media significantly increased the gene expressions of interleukin‐10 and CD206 in lipopolysaccharide‐stimulated RAW264.7 cells. Conclusions These results suggest that DPSC transplantation promoted macrophages polarization towards anti‐inflammatory M2 phenotypes, which might be one of the therapeutic mechanisms for diabetic polyneuropathy.
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Affiliation(s)
- Maiko Omi
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Masaki Hata
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Nobuhisa Nakamura
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Megumi Miyabe
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Yasuko Kobayashi
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Hideki Kamiya
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Jiro Nakamura
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Shogo Ozawa
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Yoshinobu Tanaka
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Jun Takebe
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Tatsuaki Matsubara
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Keiko Naruse
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
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Park H, Jeoung NH. Inflammation increases pyruvate dehydrogenase kinase 4 (PDK4) expression via the Jun N-Terminal Kinase (JNK) pathway in C2C12 cells. Biochem Biophys Res Commun 2015; 469:1049-54. [PMID: 26740179 DOI: 10.1016/j.bbrc.2015.12.113] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 12/24/2015] [Indexed: 01/22/2023]
Abstract
Chronic inflammation augments the deleterious effects of several diseases, particularly diabetes, cancer, and sepsis. It is also involved in the process of metabolic shift from glucose oxidation to lactate production. Although several studies suggest that the change in activity of the pyruvate dehydrogenase complex (PDC) is a major factor causing this metabolic change, the exact mechanism of the inflammatory state remains unclear. In this study, we investigated the effect of lipopolysaccharide (LPS) on the expression of pyruvate dehydrogenase kinase 4 (PDK4), which is strongly associated with inactivation of the PDC in C2C12 myoblasts. In C2C12 myoblasts, LPS exposure led to increased PDK4 mRNA and protein expression levels as well as lactate production in culture medium. However, the expression levels of other PDK isoenzymes (PDK1 - 3) remained unchanged. Additionally, we observed that LPS treatment induced phosphorylation of Jun N-Terminal Kinases (JNK). To confirm the role of JNK, we inhibited the JNK pathway and observed that PDK4 expression and lactate production were decreased, but p38 and ERK were not significantly changed. Taken together, our results suggest that LPS induces PDK4 expression and alters glucose metabolism via the JNK pathway.
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Affiliation(s)
- Hana Park
- Department of Biomedical Sciences, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Nam Ho Jeoung
- Department of Pharmaceutical Science and Technology, Catholic University of Daegu, Gyeongsan, Republic of Korea.
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264
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Zhou F, Zhong X, Chen J, Li C, Shang M, Jiang C, Yang H, Zhao W, Liu L. Helicobacter pylori infection associated with type 2 diabetic nephropathy in patients with dyspeptic symptoms. Diabetes Res Clin Pract 2015; 110:328-34. [PMID: 26547504 DOI: 10.1016/j.diabres.2015.09.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 08/04/2015] [Accepted: 09/04/2015] [Indexed: 12/22/2022]
Abstract
AIMS The aim of this conventional case-control study was to investigate the prevalence and relationship between Helicobacter pylori infection in type 2 diabetes mellitus (DM) and diabetic nephropathy (DN). METHODS A total of 241 type 2 DM patients and 69 non-diabetic subjects with dyspeptic symptoms were enrolled in the study. Gastroduodenal lesions were observed by gastrointestinal endoscopy and the presence of H. pylori was identified by rapid urease test and serum IgG antibodies to H. pylori. According to the urinary albumin excretion rate (UAE), patients were classified into diabetes mellitus group (DM group, with UAE <30 mg/24h); diabetic nephropathy group 1 (DN group 1, with UAE 30 mg/24 h to <300 mg/24 h); and diabetic nephropathy group 2 (DN group 2 ≥ 300 mg/24 h). The 69 non-diabetic subjects were used as control group. The serum levels of inflammatory factors such as tumor necrosis factor-α (TNF-α) and interleukin (IL)-8 were determined using ELISA. RESULTS The prevalence of H. pylori infection in DN group 1 and DN group 2 was 45/72 (62.5%) and 34/53 (64.15%), respectively, which was significantly higher than in control [28/65 (43.1%)] and DM groups [42.9% (27/63)]. No significant differences of H. pylori prevalence were detected between DN groups as well as DM and control groups. Interestingly, in both DN groups, higher levels of IL-8, TNF-α and urinary albumin excretion rate were found in H. pylori positive subjects. CONCLUSIONS Diabetic nephropathy patients are more susceptible to H. pylori infection. Our data support an association between H. pylori infection and diabetic nephropathy.
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Affiliation(s)
- Fei Zhou
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, PR China; Department of Nephrology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Xiaoqin Zhong
- Department of Gastroenterology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Jingbo Chen
- Department of Gastrointestinal Surgery, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, 250014, PR China
| | - Chunguo Li
- Department of Nephrology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Ming Shang
- Department of Nephrology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Cheng Jiang
- Department of Nephrology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Hairong Yang
- Department of Nephrology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Weidong Zhao
- Department of Gastroenterology, People's Hospital of Linzi District, Zibo, Shandong 255400, PR China
| | - Liqiu Liu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, PR China.
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Chen F, Zhang N, Ma X, Huang T, Shao Y, Wu C, Wang Q. Naringin Alleviates Diabetic Kidney Disease through Inhibiting Oxidative Stress and Inflammatory Reaction. PLoS One 2015; 10:e0143868. [PMID: 26619044 PMCID: PMC4664292 DOI: 10.1371/journal.pone.0143868] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 11/09/2015] [Indexed: 01/01/2023] Open
Abstract
Naringin, a flavanone glycoside extracted from Citrus grandis Osbeck, has a wide range of pharmacological effects. In the present study we aimed at demonstrating the protective effect of naringin against diabetic kidney disease (DKD) and elucidating its possible molecular mechanism underlying. The beneficial effect of naringin was assessed in rats with streptozotocin (STZ)-induced diabetes and high glucose-induced HBZY-1 cells. According to our results, first we found that naringin relieved kidney injury, improved renal function and inhibited collagen formation and renal interstitial fibrosis. Second, we confirmed that naringin restrained oxidative stress by activating Nrf2 antioxidant pathway. Moreover, the results suggested that naringin significantly resisted inflammatory reaction by inhibiting NF- κ B signaling pathway. Taken together, our results demonstrate that naringin effectively alleviates DKD, which provide theoretical basis for naringin clinically used to treatment of DKD.
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Affiliation(s)
- Fenqin Chen
- Department of Geratology for Cadres, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
| | - Ning Zhang
- Department of Pathphysiology, College of Basic Medical Sciences, China Medical University, Shenyang 110013, People’s Republic of China
| | - Xiaoyu Ma
- Department of Geratology for Cadres, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
| | - Ting Huang
- Department of Geratology for Cadres, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
| | - Ying Shao
- Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
| | - Can Wu
- Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
| | - Qiuyue Wang
- Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People’s Republic of China
- * E-mail:
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266
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Impact of glycemic control on oral health status in type 2 diabetes individuals and its association with salivary and plasma levels of chromogranin A. Arch Oral Biol 2015; 62:10-9. [PMID: 26605682 DOI: 10.1016/j.archoralbio.2015.11.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 11/05/2015] [Accepted: 11/08/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To evaluate the effect of glycemic control status in type 2 diabetes mellitus (T2DM) individuals on clinical oral health indicators and to compare the concentrations of plasma and salivary chromogranin A (CHGA) among nondiabetic subjects and T2DM patients, exploring their associations. DESIGN In this cross-sectional study, 32 patients with controlled T2DM, 31 with poorly controlled T2DM and 37 nondiabetic subjects underwent a clinical and periodontal examination. CHGA concentrations were determined in saliva and plasma with ELISA. RESULTS Poorly controlled T2DM group exhibited significantly higher mean buffering capacity, plaque index and bleeding on probing than other groups (P<0.05). No difference was found to DMFT (decayed, missed and filled teeth) index between groups. Sites with clinical attachment loss (CAL) of 4 and 5-6mm were significantly higher in both diabetic groups compared to control group (P<0.05). Poorly controlled T2DM group had significantly higher sites with CAL ≥ 7 mm than other groups (P=0.001). Significantly higher plasma and salivary CHGA levels were found in T2DM groups (P<0.05). In both diabetic groups, probing depths 5-6mm and CAL 5-6mm were associated with higher salivary CHGA concentration (P<0.05). CONCLUSIONS The findings revealed that T2DM patients were more prone to periodontal tissue damage than to caries risk. The results also provide some evidence that the degree of attachment loss deteriorates significantly with poor glycemic control in T2DM (CAL ≥ 7 mm). Moreover, the results suggest that high concentrations of salivary CHGA are associated with worse periodontal parameters and T2DM, and this could be related to the pathogenesis of both diseases.
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267
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van der Harg JM, Eggels L, Ruigrok SR, Hoozemans JJM, la Fleur SE, Scheper W. Neuroinflammation is not a Prerequisite for Diabetes-induced Tau Phosphorylation. Front Neurosci 2015; 9:432. [PMID: 26617484 PMCID: PMC4637426 DOI: 10.3389/fnins.2015.00432] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 10/23/2015] [Indexed: 01/01/2023] Open
Abstract
Abnormal phosphorylation and aggregation of tau is a key hallmark of Alzheimer's disease (AD). AD is a multifactorial neurodegenerative disorder for which Diabetes Mellitus (DM) is a risk factor. In animal models for DM, the phosphorylation and aggregation of tau is induced or exacerbated, however the underlying mechanism is unknown. In addition to the metabolic dysfunction, DM is characterized by chronic low-grade inflammation. This was reported to be associated with a neuroinflammatory response in the hypothalamus of DM animal models. Neuroinflammation is also implicated in the development and progression of AD. It is unknown whether DM also induces neuroinflammation in brain areas affected in AD, the cortex and hippocampus. Here we investigated whether neuroinflammation could be the mechanistic trigger to induce tau phosphorylation in the brain of DM animals. Two distinct diabetic animal models were used; rats on free-choice high-fat high-sugar (fcHFHS) diet that are insulin resistant and streptozotocin-treated rats that are insulin deficient. The streptozotocin-treated animals demonstrated increased tau phosphorylation in the brain as expected, whereas the fcHFHS diet fed animals did not. Remarkably, neither of the diabetic animal models showed reactive microglia or increased GFAP and COX-2 levels in the cortex or hippocampus. From this, we conclude: 1. DM does not induce neuroinflammation in brain regions affected in AD, and 2. Neuroinflammation is not a prerequisite for tau phosphorylation. Neuroinflammation is therefore not the mechanism that explains the close connection between DM and AD.
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Affiliation(s)
- Judith M van der Harg
- Department of Genome Analysis, Academic Medical Center, University of Amsterdam Amsterdam, Netherlands ; Departments of Functional Genomics and Molecular and Cellular Neuroscience, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University Amsterdam Amsterdam, Netherlands
| | - Leslie Eggels
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam Amsterdam, Netherlands
| | - Silvie R Ruigrok
- Departments of Functional Genomics and Molecular and Cellular Neuroscience, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University Amsterdam Amsterdam, Netherlands
| | - Jeroen J M Hoozemans
- Department of Pathology, Neuroscience Campus Amsterdam, VU University Medical Center Amsterdam, Netherlands
| | - Susanne E la Fleur
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam Amsterdam, Netherlands
| | - Wiep Scheper
- Department of Genome Analysis, Academic Medical Center, University of Amsterdam Amsterdam, Netherlands ; Departments of Functional Genomics and Molecular and Cellular Neuroscience, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University Amsterdam Amsterdam, Netherlands ; Department of Clinical Genetics and Alzheimer Center, VU University Medical Center Amsterdam, Netherlands
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268
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Wu CS, Lai MS, Gau SSF. Complications and mortality in patients with schizophrenia and diabetes: population-based cohort study. Br J Psychiatry 2015; 207:450-7. [PMID: 26294369 DOI: 10.1192/bjp.bp.113.143925] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 12/09/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND The long-term outcome of patients with both diabetes and schizophrenia remains unclear. AIMS To explore whether having schizophrenia increases the risk of advanced complications and mortality in people with diabetes. METHOD This is a population-based matched cohort study using Taiwan's National Health Insurance Research Database. A total of 11 247 participants with diabetes and schizophrenia and 11 247 participants with diabetes but not schizophrenia were enrolled. We used Cox proportional hazard models to determine the effect of schizophrenia on macrovascular and microvascular complications, and all-cause mortality. RESULTS The adjusted hazard ratios were 1.49 (95% CI 1.32-1.68) for macrovascular complications, 1.05 (95% CI 0.91-1.21) for microvascular complications and 3.68 (95% CI 3.21-4.22) for all-cause mortality in patients with diabetes and schizophrenia compared with those patients with diabetes but not schizophrenia. CONCLUSIONS Patients with both diabetes and schizophrenia had an increased risk of macrovascular complications and all-cause mortality but did not have statistically significant elevated risk of microvascular complications.
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Affiliation(s)
- Chi-Shin Wu
- Chi-Shin Wu, MD, MSc, Department of Psychiatry, Far Eastern Memorial Hospital, Taipei, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan; Mei-Shu Lai, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan; Susan Shur-Fen Gau, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Mei-Shu Lai
- Chi-Shin Wu, MD, MSc, Department of Psychiatry, Far Eastern Memorial Hospital, Taipei, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan; Mei-Shu Lai, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan; Susan Shur-Fen Gau, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Susan Shur-Fen Gau
- Chi-Shin Wu, MD, MSc, Department of Psychiatry, Far Eastern Memorial Hospital, Taipei, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan; Mei-Shu Lai, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan; Susan Shur-Fen Gau, MD, PhD, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei and Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
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269
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Najafi L, Malek M, Valojerdi AE, Khamseh ME. Acute phase proteins and diabetes microvascular complications. Int J Diabetes Dev Ctries 2015. [DOI: 10.1007/s13410-015-0389-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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270
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Montero RM, Covic A, Gnudi L, Goldsmith D. Diabetic nephropathy: What does the future hold? Int Urol Nephrol 2015; 48:99-113. [PMID: 26438328 PMCID: PMC4705119 DOI: 10.1007/s11255-015-1121-y] [Citation(s) in RCA: 27] [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: 07/22/2015] [Accepted: 09/19/2015] [Indexed: 12/24/2022]
Abstract
The consensus management of diabetic nephropathy (DN) in 2015 involves good control of glycaemia, dyslipidaemia and blood pressure (BP). Blockade of the renin-angiotensin-aldosterone system using angiotensin-converting enzyme inhibitors, angiotensin-2 receptor blockers or mineralocorticoid inhibitors are key therapeutic approaches, shown to be beneficial once overt nephropathy is manifest, as either, or both, of albuminuria and loss of glomerular filtration rate. Some significant additional clinical benefits in slowing the progression of DN was reported from the Remission clinic experience, where simultaneous intensive control of BP, tight glycaemic control, weight loss, exercise and smoking cessation were prioritised in the management of DN. This has not proved possible to translate to more conventional clinical settings. This review briefly looks over the history and limitations of current therapy from landmark papers and expert reviews, and following an extensive PubMed search identifies the most promising clinical biomarkers (both established and proposed). Many challenges need to be addressed urgently as in order to obtain novel therapies in the clinic; we also need to examine what we mean by remission, stability and progression of DN in the modern era.
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Affiliation(s)
- R M Montero
- Renal, Dialysis and Transplantation Unit, Guy's and St Thomas' Hospital, London, UK.
| | - A Covic
- Hospital "C.I.Parhon" and University of Medicine "Grigore T Popa", Iasi, Romania
| | - L Gnudi
- Cardiovascular Division, Department of Diabetes and Endocrinology, Guy's and St Thomas' Hospital, School of Medicine and Life Science, King's College London, London, UK
| | - D Goldsmith
- Renal, Dialysis and Transplantation Unit, Guy's and St Thomas' Hospital, London, UK
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271
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Li L, Sapkota M, Kim SW, Soh Y. Herbacetin inhibits inducible nitric oxide synthase via JNK and nuclear factor-κB in LPS-stimulated RAW264.7 cells. Eur J Pharmacol 2015; 765:115-23. [DOI: 10.1016/j.ejphar.2015.08.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/18/2015] [Accepted: 08/18/2015] [Indexed: 12/27/2022]
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272
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Moreira JD, Pernomian L, Gomes MS, Pernomian L, Moreira RP, do Prado AF, da Silva CHTP, de Oliveira AM. Acute restraint stress increases carotid reactivity in type-I diabetic rats by enhancing Nox4/NADPH oxidase functionality. Eur J Pharmacol 2015; 765:503-16. [PMID: 26387612 DOI: 10.1016/j.ejphar.2015.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 08/16/2015] [Accepted: 09/14/2015] [Indexed: 12/23/2022]
Abstract
Hyperglycemia increases the generation of reactive oxygen species and affects systems that regulate the vascular tone including renin-angiotensin system. Stress could exacerbate intracellular oxidative stress during Diabetes upon the activation of angiotensin AT1/NADPH oxidase pathway, which contributes to the development of diabetic cardiovascular complications. For this study, type-I Diabetes was induced in Wistar rats by intraperitoneal injection of streptozotocin. 28 days after streptozotocin injection, the animals underwent to acute restraint stress for 3 h. Cumulative concentration-response curves for angiotensin II were obtained in carotid rings pre-treated or not with Nox or cyclooxygenase inhibitors. Nox1 or Nox4 expression and activity were assessed by Western blotting and lucigenin chemiluminescence, respectively. The role of Nox1 and Nox4 on reactive oxygen species generation was evaluated by flow cytometry and Amplex Red assays. Cyclooxygenases expression was assessed by real-time polymerase chain reaction. The contractile response evoked by angiotensin II was increased in diabetic rat carotid. Acute restraint stress increased this response in this vessel by mechanisms mediated by Nox4, whose local expression and activity in generating hydrogen peroxide are increased. The contractile hyperreactivity to angiotensin II in stressed diabetic rat carotid is also mediated by metabolites derived from cyclooxygenase-2, whose local expression is increased. Taken together, our findings suggest that acute restraint stress exacerbates the contractile hyperreactivity to angiotensin II in diabetic rat carotid by enhancing Nox4-driven generation of hydrogen peroxide, which evokes contractile tone by cyclooxygenases-dependent mechanisms. Finally, these findings highlight the harmful role played by acute stress in modulating diabetic vascular complications.
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Affiliation(s)
- Josimar D Moreira
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University from Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
| | - Larissa Pernomian
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences from Ribeirão Preto (FCFRP), University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Mayara S Gomes
- Department of Physics and Chemistry, FCFRP, USP, Ribeirão Preto, SP, Brazil
| | - Laena Pernomian
- Department of Pharmacology, Faculty of Medicine from Ribeirão Preto (FMRP), USP, Ribeirão Preto, SP, Brazil
| | - Rafael P Moreira
- Department of Physics and Chemistry, FCFRP, USP, Ribeirão Preto, SP, Brazil
| | - Alejandro F do Prado
- Department of Pharmacology, Faculty of Medicine from Ribeirão Preto (FMRP), USP, Ribeirão Preto, SP, Brazil
| | - Carlos H T P da Silva
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences from Ribeirão Preto (FCFRP), University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Ana M de Oliveira
- Department of Physics and Chemistry, FCFRP, USP, Ribeirão Preto, SP, Brazil
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273
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Potential Bioactive Compounds from Seaweed for Diabetes Management. Mar Drugs 2015; 13:5447-91. [PMID: 26308010 PMCID: PMC4557030 DOI: 10.3390/md13085447] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/11/2015] [Accepted: 06/11/2015] [Indexed: 02/07/2023] Open
Abstract
Diabetes mellitus is a group of metabolic disorders of the endocrine system characterised by hyperglycaemia. Type II diabetes mellitus (T2DM) constitutes the majority of diabetes cases around the world and are due to unhealthy diet, sedentary lifestyle, as well as rise of obesity in the population, which warrants the search for new preventive and treatment strategies. Improved comprehension of T2DM pathophysiology provided various new agents and approaches against T2DM including via nutritional and lifestyle interventions. Seaweeds are rich in dietary fibres, unsaturated fatty acids, and polyphenolic compounds. Many of these seaweed compositions have been reported to be beneficial to human health including in managing diabetes. In this review, we discussed the diversity of seaweed composition and bioactive compounds which are potentially useful in preventing or managing T2DM by targeting various pharmacologically relevant routes including inhibition of enzymes such as α-glucosidase, α-amylase, lipase, aldose reductase, protein tyrosine phosphatase 1B (PTP1B) and dipeptidyl-peptidase-4 (DPP-4). Other mechanisms of action identified, such as anti-inflammatory, induction of hepatic antioxidant enzymes’ activities, stimulation of glucose transport and incretin hormones release, as well as β-cell cytoprotection, were also discussed by taking into consideration numerous in vitro, in vivo, and human studies involving seaweed and seaweed-derived agents.
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274
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Yu Y, Chen H, Su SB. Neuroinflammatory responses in diabetic retinopathy. J Neuroinflammation 2015; 12:141. [PMID: 26245868 PMCID: PMC4527131 DOI: 10.1186/s12974-015-0368-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/27/2015] [Indexed: 01/14/2023] Open
Abstract
Diabetic retinopathy (DR) is a common complication of diabetes and has been recognized as a vascular dysfunction leading to blindness in working-age adults. It becomes increasingly clear that neural cells in retina play an important role in the pathogenesis of DR. Neural retina located at the back of the eye is part of the brain and a representative of the central nervous system. The neurosensory deficits seen in DR are related to inflammation and occur prior to the clinically identifiable vascular complications. The neural deficits are associated with abnormal reactions of retina glial cells and neurons in response to hyperglycemia. Improper activation of the innate immune system may also be an important contributor to the pathophysiology of DR. Therefore, DR manifests characteristics of both vasculopathy and chronic neuroinflammatory diseases. In this article, we attempt to provide an overview of the current understanding of inflammation in neural retina abnormalities in diabetes. Inhibition of neuroinflammation may represent a novel therapeutic strategy to the prevention of the progression of DR.
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Affiliation(s)
- Ying Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 S Xianlie Road, Guangzhou, 510060, China.
| | - Hui Chen
- Eye Institute, Affiliated Hospital of Nantong University, Nantong, 226001, China.
| | - Shao Bo Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 S Xianlie Road, Guangzhou, 510060, China.
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275
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Wan TT, Li XF, Sun YM, Li YB, Su Y. Recent advances in understanding the biochemical and molecular mechanism of diabetic retinopathy. Biomed Pharmacother 2015; 74:145-7. [DOI: 10.1016/j.biopha.2015.08.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 08/02/2015] [Indexed: 01/07/2023] Open
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276
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Mohamed HG, Idris SB, Ahmed MF, Åstrøm AN, Mustafa K, Ibrahim SO, Mustafa M. Influence of type 2 diabetes on local production of inflammatory molecules in adults with and without chronic periodontitis: a cross-sectional study. BMC Oral Health 2015. [PMID: 26211001 PMCID: PMC4515322 DOI: 10.1186/s12903-015-0073-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background Pathological changes in periodontal tissues are mediated by the interaction between microorganisms and the host immune-inflammatory response. Hyperglycemia may interfere with this process. The aim of this study was to compare the levels of 27 inflammatory molecules in the gingival crevicular fluid (GCF) of patients with type 2 diabetes, with and without chronic periodontitis, and of chronic periodontitis subjects without diabetes. A putative correlation between glycated haemoglobin (HbA1c) and levels of the inflammatory molecules was also investigated. Methods The study population comprised a total of 108 individuals, stratified into: 54 with type 2 diabetes and chronic periodontitis (DM + CP), 30 with chronic periodontitis (CP) and 24 with type 2 diabetes (DM). Participants were interviewed with the aid of structured questionnaire. Periodontal parameters (dental plaque, bleeding on probing and periodontal pocket depth) were recorded. The GCF levels of the 27 inflammatory molecules were measured using multiplex micro-bead immunoassay. A glycated haemoglobin (HbA1c) test was performed for patients with diabetes by boronate affinity chromatography. Results After adjustment for potential confounders, the DM + CP group had higher levels of IL-8 and MIP-1β, and lower levels of TNF-α, IL-4, INF-γ, RANTES and IL-7 compared to the CP group. Moreover, the DM + CP group had lower levels of IL-6, IL-7 and G-CSF compared to the DM group. The DM group had higher levels of IL-10, VEGF, and G-CSF compared to the CP group. The levels of MIP-1α and FGF were lower in diabetes patients (regardless of their periodontal status) than in chronic periodontitis subjects without diabetes. Diabetes patients (DM + CP and DM) had higher Th-2/Th-1 ratio compared to the CP group. HbA1c correlated positively with the pro-inflammatory cytokines (Pearson correlation coefficient = 0.27, P value: 0.02). Conclusion Type 2 diabetes and chronic periodontitis may influence the GCF levels of inflammatory molecules synergistically as well as independently. Type 2 diabetes was associated with high Th-2/Th-1 ratio, and modulated the local expression of molecules involved in the anti-inflammatory and healing processes.
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Affiliation(s)
- Hasaan G Mohamed
- Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Årstadveien 19, 5009, Bergen, Norway. .,Department of Oral Rehabilitation, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan.
| | - Shaza B Idris
- Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
| | | | - Anne N Åstrøm
- Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
| | - Kamal Mustafa
- Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
| | - Salah O Ibrahim
- Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
| | - Manal Mustafa
- Oral Health Competence Center in Western Norway, Hordaland, Bergen, Norway.
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277
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Effects of nimesulide, a selective COX-2 inhibitor, on cardiovascular function in 2 rat models of diabetes. J Cardiovasc Pharmacol 2015; 64:79-86. [PMID: 24621649 DOI: 10.1097/fjc.0000000000000093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Cyclooxygenase-2 (COX-2) has been found to be activated in diabetes. We investigated whether nimesulide (selective COX-2 inhibitor) alters cardiovascular responses to adrenaline in 2 rat models of diabetes. Wistar rats (5-week old) were continuously fed a normal or high-fructose diet (60% of caloric intake). At week 2, half of the rats in each diet regimen were given streptozotocin (STZ) (60 mg/kg, intravenously). At week 6, cardiovascular effects of adrenaline (6 and 16 × 10 mol·kg·min, intravenously) were measured in 4 groups of thiobutabarbital-anesthetized rats (control, fructose, STZ, and fructose-streptozotocin [F-STZ]) before and after the injection of nimesulide (3 mg/kg, intravenously). Both the STZ and F-STZ groups exhibited hyperglycemia and significantly (P < 0.05) reduced left ventricular contractility, mean arterial pressure, arterial and venous resistance, and mean circulatory filling pressure (index of venous tone) responses to adrenaline, relative to the control and fructose groups. Nimesulide did not affect responses in the control and fructose groups but increased the venous and, to a less extent, arterial constriction to adrenaline in both the groups of diabetic rats. The cardiac contractile responses, however, were not altered after nimesulide treatment. The results show that nimesulide partially restored arterial and venous constriction to adrenaline in rats with STZ- and F-STZ-induced diabetes.
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278
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RETRACTED ARTICLE: TN-2 modulates LPS-induced inflammatory response in human renal tubular epithelial cells by blocking TLR4-mediated NF-κB activation via MyD88- and TRIF-dependent mechanism. Inflamm Res 2015. [DOI: 10.1007/s00011-015-0853-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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279
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Hosseinpour-Niazi S, Mirmiran P, Fallah-Ghohroudi A, Azizi F. Non-soya legume-based therapeutic lifestyle change diet reduces inflammatory status in diabetic patients: a randomised cross-over clinical trial. Br J Nutr 2015; 114:213-9. [PMID: 26077375 DOI: 10.1017/s0007114515001725] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The present randomised cross-over clinical trial investigated the effects of two intervention diets (non-soya legume-based therapeutic lifestyle change (TLC) diet v. isoenergetic legume-free TLC diet) on inflammatory biomarkers among type 2 diabetic patients. A group of thirty-one participants (twenty-four women and seven men; weight 74.5 (SD 7.0) kg; age 58.1 (SD 6.0) years) were randomly assigned to one of the two following intervention diets for 8 weeks: legume-free TLC diet or non-soya legume-based TLC diet. The latter diet was the same as the legume-free TLC diet, except that two servings of red meat were replaced with different types of cooked non-soya legumes such as lentils, chickpeas, peas and beans over a period of 3 d per week. The intervention period was followed by a washout period of 4 weeks, after which the groups followed the alternate treatment for 8 weeks. Concentrations of inflammatory markers were measured at baseline and after the intervention periods. Compared with the legume-free TLC diet, the non-soya legume-based TLC diet significantly decreased high-sensitivity C-reactive protein, IL-6 and TNF-α in overweight diabetic patients. The replacement of two servings of red meat by non-soya legumes in the isoenergetic TLC diet for a period of 3 d per week reduced the plasma concentrations of inflammatory markers among overweight diabetic patients, independent of weight change.
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Affiliation(s)
- Somayeh Hosseinpour-Niazi
- Nutrition and Endocrine Research Center, Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences,Tehran,Iran
| | - Parvin Mirmiran
- Department of Clinical Nutrition and Dietetics,Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences,Tehran,Iran
| | - Arefeh Fallah-Ghohroudi
- Nutrition and Endocrine Research Center, Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences,Tehran,Iran
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences,Tehran,Iran
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280
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Grossmann V, Schmitt VH, Zeller T, Panova-Noeva M, Schulz A, Laubert-Reh D, Juenger C, Schnabel RB, Abt TGJ, Laskowski R, Wiltink J, Schulz E, Blankenberg S, Lackner KJ, Münzel T, Wild PS. Profile of the Immune and Inflammatory Response in Individuals With Prediabetes and Type 2 Diabetes. Diabetes Care 2015; 38:1356-64. [PMID: 25877811 DOI: 10.2337/dc14-3008] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/14/2015] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The inflammatory and immune systems are altered in type 2 diabetes. Here, the aim was to profile the immune and inflammatory response in subjects with prediabetes and diabetes in a large population-representative sample. RESEARCH DESIGN AND METHODS In total, 15,010 individuals were analyzed from the population-based Gutenberg Health Study. Glucose status was classified according to HbA1c concentration and history of diagnosis. All samples were analyzed for white blood cells (WBCs), granulocytes, lymphocytes, monocytes, platelets, C-reactive protein (CRP), albumin, fibrinogen, and hematocrit. Interleukin-18 (IL-18), IL-1 receptor antagonist (IL-1RA), and neopterin concentrations were determined in a subcohort. RESULTS In total, 7,584 men and 7,426 women were analyzed (range 35-74 years), with 1,425 and 1,299 having prediabetes and diabetes, respectively. Biomarkers showed varying dynamics from normoglycemic via subjects with prediabetes to subjects with diabetes: 1) gradual increase (WBCs, granulocytes, monocytes, IL-1RA, IL-18, and fibrinogen), 2) increase with subclinical disease only (lymphocytes and CRP), 3) increase from prediabetes to diabetes only (neopterin), and 4) no variation with glucose status (hematocrit). The strongest relative differences were found for CRP, IL-1RA, and fibrinogen concentrations. Several inflammatory and immune markers were associated with the glucose status independent from cardiovascular risk factors and comorbidities, varied with disease severity and the presence of disease-specific complications in the diabetes subcohort. CONCLUSIONS The inflammatory and immune biomarker profile varies with the development and progression of type 2 diabetes. Markers of inflammation and immunity enable differentiation between the early preclinical and clinical phases of the disease, disease complications, and progression.
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Affiliation(s)
- Vera Grossmann
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Volker H Schmitt
- Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Tanja Zeller
- Clinic for General and Interventional Cardiology, University Heart Centre Hamburg, Hamburg, Germany German Center for Cardiovascular Research (DZHK), Partner Site Hamburg, Lübeck, Kiel, Germany
| | - Marina Panova-Noeva
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Andreas Schulz
- Preventive Cardiology and Preventive Medicine, Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Dagmar Laubert-Reh
- Preventive Cardiology and Preventive Medicine, Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Claus Juenger
- Preventive Cardiology and Preventive Medicine, Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Renate B Schnabel
- Clinic for General and Interventional Cardiology, University Heart Centre Hamburg, Hamburg, Germany German Center for Cardiovascular Research (DZHK), Partner Site Hamburg, Lübeck, Kiel, Germany
| | - Tobias G J Abt
- Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Rafael Laskowski
- Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Jörg Wiltink
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Mainz, Mainz, Germany
| | - Eberhard Schulz
- Department of Medicine 2, University Medical Center Mainz, Mainz, Germany
| | - Stefan Blankenberg
- Clinic for General and Interventional Cardiology, University Heart Centre Hamburg, Hamburg, Germany German Center for Cardiovascular Research (DZHK), Partner Site Hamburg, Lübeck, Kiel, Germany
| | - Karl J Lackner
- Institute for Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
| | - Thomas Münzel
- Department of Medicine 2, University Medical Center Mainz, Mainz, Germany German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Philipp S Wild
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany Preventive Cardiology and Preventive Medicine, Department of Medicine 2, University Medical Center Mainz, Mainz, Germany German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
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281
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Elevated levels of serum IL-12 and IL-18 are associated with lower frequencies of CD4(+)CD25 (high)FOXP3 (+) regulatory t cells in young patients with type 1 diabetes. Inflammation 2015; 37:1513-20. [PMID: 24677179 PMCID: PMC4174326 DOI: 10.1007/s10753-014-9878-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Type 1 diabetes is thought to involve chronic inflammation, which is manifested by the activation and expression of different inflammatory mediators. IL-12 and IL-18 are two cytokines that have been shown to exert strong proinflammatory activity and have been implicated in the pathogenesis of type 1 diabetes in mice and humans. The overproduction of proinflammatory mediators is controlled by specialized T cell subset, namely regulatory T cells that express FOXP3 transcription factor. Since IL-12 and IL-18 mediate inflammatory response and Tregs exhibit anti-inflammatory potential, we aimed to examine their reciprocal relationship in patients with type 1 diabetes. The study group consisted of 47 children diagnosed with type 1 diabetes and 28 healthy individuals. Serum levels of IL-12 and IL-18 were measured by ELISA, and the peripheral blood CD4+CD25high FOXP3+ regulatory T cell frequencies were analyzed by flow cytometry. Patients with type 1 diabetes had a decreased percentage of circulating CD4+CD25highFOXP3+ Tregs in comparison to their healthy counterparts. In addition, they produced more IL-12 and IL-18 than children from the control group. Concentrations of these cytokines positively correlated with one another, as well as with CRP and HbA1c. Moreover, the negative association between IL-12, IL-18, CRP serum levels, and the frequency of regulatory CD4+CD25highFOXP3+ Tregs was observed. IL-12 and IL-18 may have direct or indirect impact on regulatory T cell subset, which may contribute to their reduced frequency in peripheral blood of patients with type 1 diabetes mellitus.
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282
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Artese HPC, Foz AM, Rabelo MDS, Gomes GH, Orlandi M, Suvan J, D’Aiuto F, Romito GA. Periodontal therapy and systemic inflammation in type 2 diabetes mellitus: a meta-analysis. PLoS One 2015; 10:e0128344. [PMID: 26010492 PMCID: PMC4444100 DOI: 10.1371/journal.pone.0128344] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 04/26/2015] [Indexed: 02/07/2023] Open
Abstract
AIM The aim of this systematic review was to assess the effect of periodontal therapy (PT) on serum levels of inflammatory markers in people with type 2 diabetes mellitus (T2DM). METHODS OF STUDY SELECTION A literature search was carried out using MEDLINE via Pubmed, EMBASE, LILACS and Cochrane Central Register of Controlled Trials (CENTRAL) databases. Randomized-controlled trials (RCTs) and controlled clinical trials (CCTs) evaluating the effect of PT on systemic inflammatory markers were deemed eligible. Case series (CS), reports and pilot trials were excluded. Study quality was assessed using the Cochrane Collaboration's risk assessment tool. Meta-analysis was carried out using random effect methods. RESULTS The search strategy identified 3,164 potential studies of which 61 were assessed for eligibility and 9 (6 RCTs and 3 CCTs) were included in this systematic review. Three RCTs were classified by the authors as being at low risk of bias and three were "unclear" and classified as uncertain risk of bias. All CCTs were considered to be at a high risk of bias. The meta-analysis showed a statistically significant mean difference (MD) for TNF- α (-1.33 pg/ml, 95% CI: -2.10; -0.56, p<0.001) and CRP (-1.28 mg/l, 95% CI: -2.07; - 0.48, p<0.001) favoring periodontal intervention versus control. CONCLUSION The results of this meta-analysis support the hypothesis that PT reduces serum levels of TNF- α and CRP in T2DM individuals. The decrease of inflammatory burden has important implications for metabolic control and can, in part, explain the mechanisms linking periodontitis and increased risk for complications in people with T2DM.
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Affiliation(s)
- Hilana Paula Carillo Artese
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Adriana Moura Foz
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Mariana de Sousa Rabelo
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Giovane Hisse Gomes
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Marco Orlandi
- Unit of Periodontology, UCL Eastman Dental Institute, London, United Kingdom
| | - Jean Suvan
- Unit of Periodontology, UCL Eastman Dental Institute, London, United Kingdom
| | - Francesco D’Aiuto
- Unit of Periodontology, UCL Eastman Dental Institute, London, United Kingdom
| | - Giuseppe Alexandre Romito
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
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283
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Khamaneh AM, Alipour MR, Sheikhzadeh Hesari F, Ghadiri Soufi F. A signature of microRNA-155 in the pathogenesis of diabetic complications. J Physiol Biochem 2015; 71:301-9. [PMID: 25929727 DOI: 10.1007/s13105-015-0413-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 04/21/2015] [Indexed: 11/26/2022]
Abstract
The current study was designed to explore the potential involvement of miR-155 in the pathogenesis of diabetes complications. Male rats were divided into control and diabetic groups (n = 6). Type 2 diabetes was induced by a single-dose injection of nicotinamide (110 mg/kg; intraperitoneal (i.p.)), 15 min before injection of streptozotocin (STZ; 50 mg/kg; i.p.) in 12-h fasted rats. Two months after induction of diabetes, the rats were sacrificed for subsequent measurements. The nuclear factor kappa B (NF-κB) activity was higher in diabetic peripheral blood mononuclear cells (PBMCs), aorta, heart, kidney, liver, and sciatic nerve, than the control counterparts. Also, apoptosis rate was increased in these tissues, except the aorta. NF-κB messenger RNA (mRNA) expression level was higher in the kidney, heart, PBMCs, and sciatic nerve of diabetic rats than their control counterparts. Except the liver, the miR-155 expression level was significantly decreased in diabetic kidney, heart, aorta, PBMCs, and sciatic nerve versus the controls. Moreover, the expression of miR-155 was negatively correlated with NF-κB activity and apoptosis rate. These results suggest that changes in the expression of miR-155 may participate in the pathogenesis of diabetes-related complications, but causal relationship between miR-155 dysregulation and diabetic complications is unknown.
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Affiliation(s)
- Amir Mahdi Khamaneh
- School of advanced medical sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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284
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Gulati OP. Pycnogenol® in Metabolic Syndrome and Related Disorders. Phytother Res 2015; 29:949-68. [PMID: 25931421 DOI: 10.1002/ptr.5341] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/11/2015] [Accepted: 03/11/2015] [Indexed: 12/11/2022]
Abstract
The present review provides an update of the biological actions of Pycnogenol® in the treatment of metabolic syndrome and related disorders such as obesity, dyslipidaemia, diabetes and hypertension. Pycnogenol® is a French maritime pine bark extract produced from the outer bark of Pinus pinaster Ait. Subsp. atlantica. Its strong antioxidant, antiinflammatory, endothelium-dependent vasodilator activity, and also its anti-thrombotic effects make it appropriate for targeting the multifaceted pathophysiology of metabolic syndrome. Clinical studies have shown that it can reduce blood glucose levels in people with diabetes, blood pressure in mild to moderate hypertensive patients, and waist circumference, and improve lipid profile, renal and endothelial functions in metabolic syndrome. This review highlights the pathophysiology of metabolic syndrome and related clinical research findings on the safety and efficacy of Pycnogenol®. The results of clinical research studies performed with Pycnogenol® are discussed using an evidence-based, target-oriented approach following the pathophysiology of individual components as well as in metabolic syndrome overall.
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285
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Abstract
The oral health is influenced by systemic health, and one of the most common chronic diseases encountered in dental practice is diabetes mellitus. Diabetes can worsen oral infections and vice versa. In the literature, periodontitis and diabetes in the young to middle-aged adults have been the most widely researched area. Understanding the patho-physiology, clinical manifestations and management of different types of orofacial diseases in diabetic patients are important to the diabetologist and the dentist for the optimal care of patients with these diseases. This review explores the inter-link between diabetes and oral health.
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286
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Garcia FADO, Rebouças JF, Balbino TQ, da Silva TG, de Carvalho-Júnior CHR, Cerqueira GS, Brito GADC, Viana GSDB. Pentoxifylline reduces the inflammatory process in diabetic rats: relationship with decreases of pro-inflammatory cytokines and inducible nitric oxide synthase. JOURNAL OF INFLAMMATION-LONDON 2015; 12:33. [PMID: 25922592 PMCID: PMC4411660 DOI: 10.1186/s12950-015-0080-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 04/15/2015] [Indexed: 12/18/2022]
Abstract
Studies suggest that inflammation is a key factor in the pathogenesis of diabetes mellitus. Pro-inflammatory cytokines, such as IL-6 and TNF-alpha, are produced by adipose tissue in large quantities, in obese and especially in diabetic individuals. Pentoxifylline (PTX) is a non-selective phosphodiesterase inhibitor with anti-inflammatory and antioxidant actions that may contribute to alleviate diabetes side effects, as neuropathy, retinopathy and nephropathy. This study aims to investigate PTX anti-inflammatory effects on the carrageenan-induced paw edema model, in alloxan-induced diabetic rats. Diabetic animals (male Wistar rats, 200–250 g) were daily treated with PTX (25, 50, 100 mg/kg, p.o.), glibenclamide (GLI, 5 mg/kg, p.o., as reference) or water, for 5 days. Afterwards, carrageenan-treated paws were dissected, their skin removed and the tissue used for preparation of homogenates and measurements of IL-6 and TNF-alpha by Elisa. Serum levels of nitrite were also determined and paw slices used for iNOS immunohistochemistry assays. We showed that diabetic rats presented an amplification of the inflammatory response, as related to non-diabetic rats, what was evident 48 h after the edema-induction. The PTX-treatment of diabetic rats reduced glycemia (as related to untreated-diabetic ones) and the paw edema. It also brought edema volumes to values similar to those of non-diabetic rats, at the same observation time. The increased TNF-alpha and IL-6 levels in paws of untreated-diabetic rats were reduced in diabetic animals after PTX treatments. Besides, the increased levels of nitrite in the serum of diabetic rats were also decreased by PTX. Furthermore, a higher number of iNOS immunostained cells was demonstrated in paw tissues from untreated-diabetic rats, as related to those of PTX-treated diabetic animals. Our results show that PTX reduces inflammatory parameters, as pro-inflammatory cytokines and iNOS expression, indicating the potential benefit of the drug for the treatment of diabetes and related pathologic conditions.
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Affiliation(s)
| | | | | | | | | | - Gilberto Santos Cerqueira
- Faculty of Medicine of the Federal University of Ceará, Rua Barbosa de Freitas, 130/1100, Fortaleza, CEP: 60170-020 Brazil
| | - Gerly Anne de Castro Brito
- Faculty of Medicine of the Federal University of Ceará, Rua Barbosa de Freitas, 130/1100, Fortaleza, CEP: 60170-020 Brazil
| | - Glauce Socorro de Barros Viana
- Faculty of Medicine Estácio of Juazeiro do Norte, Juazeiro do Norte, Brazil ; Faculty of Medicine of the Federal University of Ceará, Rua Barbosa de Freitas, 130/1100, Fortaleza, CEP: 60170-020 Brazil
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287
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Kara G, Cifcibasi E, Karsidag K, Cintan S. Short term effects of periodontal therapy on inflammatory markers in patients with type-2 diabetes. Saudi Med J 2015; 36:469-76. [PMID: 25828285 PMCID: PMC4404482 DOI: 10.15537/smj.2015.4.10380] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/02/2015] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES To evaluate the influence of periodontal therapy on glycosylated hemoglobin and fasting blood glucose and serum levels of interleukin (IL)-4, IL-6, IL-8, IL-10, and tumor necrosis factor-alpha (TNF-α) in chronic periodontitis (CP) patients with type-2 diabetes mellitus (T2DM) and in controls. METHODS A total of 30 periodontal patients, 15 of which were systemically healthy (control group), and 15 were T2DM patients (test group) were included in this study. This prospective study was carried out at Istanbul University, Istanbul, Turkey between February 2011 and December 2013. Plaque index, gingival index, bleeding on probing, periodontal probing depth, and clinical attachment level were assessed and recorded at baseline, one, and 3 months after therapy. Serum samples were collected at the same time-points and analyzed using Luminex assay for the levels of IL-4, IL-6, IL-8, IL-10, and TNF-α. The change in the metabolic control was also monitored. RESULTS All clinical parameters were significantly improved after the periodontal therapy in both groups (p less than l0.001). Glycosylated hemoglobin levels were decreased; however, the difference was not significant (p more than 0.05). Fasting blood glucose levels were decreased one month after therapy, and increased at 3 months. Patients with T2DM had significantly higher levels of circulating IL-8 at each time point, and TNF-α (p less than 0.05) at baseline. The IL-4 and IL-10 levels were decreased at one month after therapy (p more than 0.05). CONCLUSION Periodontal therapy has limited impact on the serum levels of IL-4, IL-6, IL-8, IL-10, and TNF-α. Metabolic control levels were not influenced by periodontal therapy.
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Affiliation(s)
- Goze Kara
- Department of Periodontology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey. E-mail.
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288
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Zhou X, Zhang W, Liu X, Zhang W, Li Y. Interrelationship between diabetes and periodontitis: Role of hyperlipidemia. Arch Oral Biol 2015; 60:667-74. [DOI: 10.1016/j.archoralbio.2014.11.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 11/13/2014] [Accepted: 11/17/2014] [Indexed: 12/11/2022]
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289
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Lee W, Lee SY, Son YJ, Yun JM. Gallic Acid Decreases Inflammatory Cytokine Secretion Through Histone Acetyltransferase/Histone Deacetylase Regulation in High Glucose-Induced Human Monocytes. J Med Food 2015; 18:793-801. [PMID: 25807193 DOI: 10.1089/jmf.2014.3342] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Hyperglycemia contributes to diabetes and several diabetes-related complications. Gallic acid is a polyhydroxy phenolic compound found in various natural products. In this study, we investigated the effects and mechanism of gallic acid on proinflammatory cytokine secretion in high glucose-induced human monocytes (THP-1 cells). THP-1 cells were cultured under normoglycemic or hyperglycemic conditions, in the absence or presence of gallic acid. Hyperglycemic conditions significantly induced histone acetylation, nuclear factor-κB (NF-κB) activation, and proinflammatory cytokine release from THP-1 cells, whereas gallic acid suppressed NF-κB activity and cytokine release. It also significantly reduced CREB-binding protein/p300 (CBP/p300, a NF-κB coactivator) gene expression, acetylation levels, and CBP/p300 histone acetyltransferase (HAT) activity. In addition, histone deacetylase 2 (HDAC2) expression was significantly induced. These results suggest that gallic acid inhibits hyperglycemic-induced cytokine production in monocytes through epigenetic changes involving NF-κB. Therefore, gallic acid may have potential for the treatment and prevention of diabetes and its complications.
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Affiliation(s)
- Wooje Lee
- 1 Samsung Advanced Institute for Health Science & Technology, Samsung Medical Center , Seoul, South Korea
| | - Sang Yeol Lee
- 2 Department of Life Science, Gachon University , Kyeonggi, South Korea
| | - Young-Jin Son
- 3 Department of Pharmacy, Sunchon National University , Sunchon, Jeonnam, South Korea
| | - Jung-Mi Yun
- 4 Department of Food and Nutrition, Chonnam National University , Gwangju, South Korea
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290
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Yoon H, Thakur V, Isham D, Fayad M, Chattopadhyay M. Moderate exercise training attenuates inflammatory mediators in DRG of Type 1 diabetic rats. Exp Neurol 2015; 267:107-14. [PMID: 25783659 DOI: 10.1016/j.expneurol.2015.03.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/22/2015] [Accepted: 03/08/2015] [Indexed: 01/12/2023]
Abstract
Painful neuropathy is a long-term and difficult to treat complication of diabetes that affects 25% of diabetic patients and interferes with their quality of life. Unfortunately, available medical treatments are relatively ineffective due to dependency and addiction. Emerging research indicates that moderate-to-vigorous physical activity provides health-related benefits. However, adequate data is not available to determine whether regular exercise would prevent or delay the development of painful neuropathy in subjects with Type 1 diabetes. This study demonstrates the significance of moderate exercise in the amelioration of pain in animals with Type 1 diabetes after 6weeks of exercise paradigm. After initial acclimatization, streptozotocin-diabetic animals were placed in motorized running wheels for 60minperday, for five days a week for 6weeks starting at one week after diabetes. A growing body of evidence suggests that the release of proinflammatory cytokines plays an important role in the development and persistence of pain. This study demonstrates that moderate exercise increases the expression of inhibitory neurotransmitter enkephalin and also reduces the presence of a number of proinflammatory cytokines in the dorsal root ganglia (DRG), subsequently impeding the development of neuropathy along with a decrease in the voltage gated ion channels in the DRG. Overall, the study suggests that exercise may provide an alternate route of treatment of painful neuropathy in Type 1 diabetic subjects by decreasing the use of pain medications, thereby providing a more useful and efficient way for pain management.
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Affiliation(s)
- HaeJee Yoon
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Vikram Thakur
- Center of Excellence in Diabetes and Obesity, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Danielle Isham
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Mona Fayad
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Munmun Chattopadhyay
- Center of Excellence in Diabetes and Obesity, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA.
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291
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Hasna A, Meiyappan K, Periyasam SG, Kalyaperumal M, Bobby Z, Subramaniam AVV. Is urolithiasis associated with increased levels of high sensitivity C-reactive protein and interleukin-6 in diabetic patients? J Clin Diagn Res 2015; 9:BC01-3. [PMID: 25954613 DOI: 10.7860/jcdr/2015/12489.5681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 02/10/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND The prevalence and incidence of urolithiasis is increasing worldwide. Type 2 diabetes mellitus is well known to be associated with insulin resistance which increases the risk of urolithiasis by altering the composition of urine. Both urolithiasis and diabetes mellitus are associated with inflammation. The aim of the study was to assess the serum levels of inflammatory markers i.e. high sensitivity C-reactive protein (hsCRP) and Interleukin-6 (IL-6) in diabetes mellitus patients with urolithiasis in comparison to those without urolithiasis. MATERIALS AND METHODS The study involved two groups. Group A consisted of diabetic mellitus patients with urolithiasis (n=30) and Group B consisted of diabetic mellitus patients without urolithiasis (n=30). Blood samples were obtained and analysed for HbA1C, lipid profile, calcium, phosphate and uric acid, and inflammatory markers (C-reactive protein and Interleukin-6) were also measured. RESULTS We found a significant increase in CRP and IL-6 levels in diabetic urolithiasis cases as compared to diabetes mellitus cases without urolithiasis. However, no significant difference was observed in calcium, phosphorus and uric acid in diabetic patients with and without urolithiasis. We also found that total cholesterol, triglycerides, LDL-cholesterol and VLDL-cholesterol levels were significantly increased, and HDL-cholesterol was significantly decreased in diabetic urolithiasis cases. IL-6 was significantly correlated with total cholesterol in diabetic urolithiasis cases. CONCLUSION The data from the present study shows that lipid profile is altered, and Interleukin-6 and C-reactive protein levels are significantly increased in patients with diabetes mellitus and urolithiasis when compared to diabetes mellitus alone.
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Affiliation(s)
- Aysha Hasna
- Postgraduate Student, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research(JIPMER) , Puducherry, India
| | - Kavitha Meiyappan
- Senior Resident, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER) , Puducherry, India
| | | | - Muruganandham Kalyaperumal
- Associate Professor, Department of Urology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER) , Puducherry
| | - Zachariah Bobby
- Professor and Head, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER) , Puducherry, India
| | - Arul Vijaya Vani Subramaniam
- Senior Resident, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER) , Puducherry, India
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292
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Ko KI, Coimbra LS, Tian C, Alblowi J, Kayal RA, Einhorn TA, Gerstenfeld LC, Pignolo RJ, Graves DT. Diabetes reduces mesenchymal stem cells in fracture healing through a TNFα-mediated mechanism. Diabetologia 2015; 58:633-642. [PMID: 25563724 PMCID: PMC4346353 DOI: 10.1007/s00125-014-3470-y] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 11/19/2014] [Indexed: 12/21/2022]
Abstract
AIMS/HYPOTHESIS Diabetes interferes with bone formation and impairs fracture healing, an important complication in humans and animal models. The aim of this study was to examine the impact of diabetes on mesenchymal stem cells (MSCs) during fracture repair. METHODS Fracture of the long bones was induced in a streptozotocin-induced type 1 diabetic mouse model with or without insulin or a specific TNFα inhibitor, pegsunercept. MSCs were detected with cluster designation-271 (also known as p75 neurotrophin receptor) or stem cell antigen-1 (Sca-1) antibodies in areas of new endochondral bone formation in the calluses. MSC apoptosis was measured by TUNEL assay and proliferation was measured by Ki67 antibody. In vitro apoptosis and proliferation were examined in C3H10T1/2 and human-bone-marrow-derived MSCs following transfection with FOXO1 small interfering (si)RNA. RESULTS Diabetes significantly increased TNFα levels and reduced MSC numbers in new bone area. MSC numbers were restored to normal levels with insulin or pegsunercept treatment. Inhibition of TNFα significantly reduced MSC loss by increasing MSC proliferation and decreasing MSC apoptosis in diabetic animals, but had no effect on MSCs in normoglycaemic animals. In vitro experiments established that TNFα alone was sufficient to induce apoptosis and inhibit proliferation of MSCs. Furthermore, silencing forkhead box protein O1 (FOXO1) prevented TNFα-induced MSC apoptosis and reduced proliferation by regulating apoptotic and cell cycle genes. CONCLUSIONS/INTERPRETATION Diabetes-enhanced TNFα significantly reduced MSC numbers in new bone areas during fracture healing. Mechanistically, diabetes-enhanced TNFα reduced MSC proliferation and increased MSC apoptosis. Reducing the activity of TNFα in vivo may help to preserve endogenous MSCs and maximise regenerative potential in diabetic patients.
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Affiliation(s)
- Kang I. Ko
- Department of Periodontics, University of Pennsylvania, 240 S 40th St, Levy 122 Philadelphia, PA19104, USA
| | - Leila S. Coimbra
- Department of Physiology and Pathology, Araraquara Dental School, State University of São Paulo, Araraquara, São Paulo , Brazil
| | - Chen Tian
- Department of Periodontics, University of Pennsylvania, 240 S 40th St, Levy 122 Philadelphia, PA19104, USA
| | - Jazia Alblowi
- Department of Oral Basic and Clinical Sciences, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rayyan A. Kayal
- Department of Oral Basic and Clinical Sciences, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Thomas A. Einhorn
- Department of Orthopaedic Surgery, School of Medicine, Boston University, Boston, MA, USA
| | - Louis C. Gerstenfeld
- Department of Orthopaedic Surgery, School of Medicine, Boston University, Boston, MA, USA
| | - Robert J. Pignolo
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Dana T. Graves
- Department of Periodontics, University of Pennsylvania, 240 S 40th St, Levy 122 Philadelphia, PA19104, USA
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293
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Malardé L, Groussard C, Lefeuvre-Orfila L, Vincent S, Efstathiou T, Gratas-Delamarche A. Fermented soy permeate reduces cytokine level and oxidative stress in streptozotocin-induced diabetic rats. J Med Food 2015; 18:67-75. [PMID: 25314273 DOI: 10.1089/jmf.2013.0132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Oxidative stress and inflammation are involved in the development of type 1 diabetes and its complications. Because two compounds found in soy, that is, isoflavones and alpha-galactooligosaccharides, have been shown to exert antioxidant and anti-inflammatory effects, this study aimed to assess the effects of a dietary supplement containing these two active compounds, the fermented soy permeate (FSP). We hypothesized that FSP would be able to reduce in vivo oxidative stress and inflammation in streptozotocin (STZ)-induced type 1 diabetic rats. Thirty male Wistar rats were divided into the control placebo, diabetic placebo, and diabetic FSP-supplemented groups. They received daily, by oral gavage, water (placebo groups) or diluted FSP (0.1 g/day; FSP-supplemented group). After 3 weeks, glycemic regulation (glycemia and fructosamine level); the plasma level of carboxymethyllysine (CML), a marker of systemic oxidative stress in diabetes; and the plasma levels of inflammatory markers (CRP, IL-1β, IL-6, and uric acid) were evaluated. Markers of oxidative damage (isoprostanes and GSH/GSSG), antioxidant enzymatic activity (SOD and GPX), and Mn-SOD content were determined in skeletal muscle (gastrocnemius). Diabetic placebo rats exhibited higher CML levels, lower SOD and GPX activities, and decreased Mn-SOD contents. FSP supplementation in diabetic animals normalized the CML and antioxidant enzymatic activity levels and tended to increase Mn-SOD expression. The markers of inflammation whose levels were increased in the diabetic placebo group were markedly decreased by FSP (IL-1β: -75%, IL-6: -46%, and uric acid: -17%), except for CRP. Our results demonstrate that FSP exhibited antioxidant and anti-inflammatory properties in vivo in STZ-induced diabetic rats.
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Affiliation(s)
- Ludivine Malardé
- 1 Laboratory M2S, Université Rennes 2-ENS Cachan , Rennes, France
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294
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Rodrigues KF, Pietrani NT, Sandrim VC, Vieira CMAF, Fernandes AP, Bosco AA, Gomes KB. Association of a Large Panel of Cytokine Gene Polymorphisms with Complications and Comorbidities in Type 2 Diabetes Patients. J Diabetes Res 2015; 2015:605965. [PMID: 26064986 PMCID: PMC4438177 DOI: 10.1155/2015/605965] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 04/09/2015] [Accepted: 04/15/2015] [Indexed: 12/12/2022] Open
Abstract
AIMS The polymorphisms of pro- and anti-inflammatory cytokines may be involved in type 2 diabetes (T2D) pathogenesis and its complications. METHODS We investigated in 102 T2D patients the association of the cytokine polymorphisms in the TNF-α, IL-10, IL-6, TGF-β1, and IFN-γ genes with the T2D microvascular complications and comorbidities (hypertension, dyslipidemia, and obesity). Cytokine genotypes were determined by PCR using Cytokine Genotyping Tray kit. RESULTS Diabetic retinopathy was associated with GG genotype and G allele in TGF-β1 codon 25C/G polymorphism (p = 0.004 and p = 0.018) and the nephropathy was associated the lower frequency of GG genotype in IL-10 -1082G/A polymorphism (p = 0.049). Hypertension was associated with the CC genotype and C allele for IL-10 -592C/A polymorphism (p = 0.013 and p = 0.009) and higher frequencies of T (p = 0.047) and C (p = 0.033) alleles of the TGF-β1 codon 10T/C and IL-10 -819T/C polymorphisms, respectively. The TGF-β1 codon 10T/C polymorphism was associated with the BMI groups (p = 0.026): the CC genotype was more frequent in the group with BMI < 25 Kg/m(2), while the TC genotype was more frequent in the group with BMI = 30 Kg/m(2). CONCLUSIONS Our findings suggest that TGF-β1 and IL-10 polymorphisms are involved in complications and comorbidities in T2D patients.
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Affiliation(s)
- K. F. Rodrigues
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - N. T. Pietrani
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - V. C. Sandrim
- Instituto de Biociências, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, SP, Brazil
| | - C. M. A. F. Vieira
- Instituto de Ensino e Pesquisa, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - A. P. Fernandes
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, No. 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
| | - A. A. Bosco
- Instituto de Ensino e Pesquisa, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - K. B. Gomes
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, No. 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
- *K. B. Gomes:
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295
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Seto SW, Yang GY, Kiat H, Bensoussan A, Kwan YW, Chang D. Diabetes Mellitus, Cognitive Impairment, and Traditional Chinese Medicine. Int J Endocrinol 2015; 2015:810439. [PMID: 26060494 PMCID: PMC4427766 DOI: 10.1155/2015/810439] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 04/15/2015] [Indexed: 12/30/2022] Open
Abstract
Diabetes mellitus (DM) is a metabolic disorder affecting a large number of people worldwide. Numerous studies have demonstrated that DM can cause damage to multiple systems, leading to complications such as heart disease, cancer, and cerebrovascular disorders. Numerous epidemiological studies have shown that DM is closely associated with dementia and cognition dysfunction, with recent research focusing on the role of DM-mediated cerebrovascular damage in dementia. Despite the therapeutic benefits of antidiabetic agents for the treatment of DM-mediated cognitive dysfunction, most of these pharmaceutical agents are associated with various undesirable side-effects and their long-term benefits are therefore in doubt. Early evidence exists to support the use of traditional Chinese medicine (TCM) interventions, which tend to have minimal toxicity and side-effects. More importantly, these TCM interventions appear to offer significant effects in reducing DM-related complications beyond blood glucose control. However, more research is needed to further validate these claims and to explore their relevant mechanisms of action. The aims of this paper are (1) to provide an updated overview on the association between DM and cognitive dysfunction and (2) to review the scientific evidence underpinning the use of TCM interventions for the treatment and prevention of DM-induced cognitive dysfunction and dementia.
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Affiliation(s)
- S. W. Seto
- National Institute of Complementary Medicine, University of Western Sydney, Campbelltown, NSW 2560, Australia
| | - G. Y. Yang
- National Institute of Complementary Medicine, University of Western Sydney, Campbelltown, NSW 2560, Australia
| | - H. Kiat
- Faculty of Medicine, University of New South Wales, Kensington, NSW 2052, Australia
- School of Medicine, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia
- Faculty of Medicine and Health Sciences, Macquarie University, NSW 2109, Australia
| | - A. Bensoussan
- National Institute of Complementary Medicine, University of Western Sydney, Campbelltown, NSW 2560, Australia
| | - Y. W. Kwan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - D. Chang
- National Institute of Complementary Medicine, University of Western Sydney, Campbelltown, NSW 2560, Australia
- *D. Chang:
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297
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Wang LM, Zhong NZ, Liu SJ, Zhu XY, Liu YJ. Hypoxia-induced acute lung injury is aggravated in Streptozotocin diabetic mice. Exp Lung Res 2014; 41:146-54. [DOI: 10.3109/01902148.2014.983280] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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298
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Cinar AB. Patients with non-apnea sleep disorder have an increased risk of periodontal diseases. J Evid Based Dent Pract 2014; 14:203-5. [PMID: 25488875 DOI: 10.1016/j.jebdp.2014.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ayse Basak Cinar
- Assistant Professor (Dentistry) and Health coach, Department of Odontology, University of Copenhagen, Norre Alle 20, 2200 Copenhagen, Denmark Researh gate website: https://www.researchgate.net/profile/Ayse_Cinar?ev=hdr_xprf.
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299
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McGinn R, Carter MR, Barrera-Ramirez J, Sigal RJ, Flouris AD, Kenny GP. Does type 1 diabetes alter post-exercise thermoregulatory and cardiovascular function in young adults? Scand J Med Sci Sports 2014; 25:e504-14. [PMID: 25487370 DOI: 10.1111/sms.12344] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2014] [Indexed: 11/26/2022]
Abstract
Recent data demonstrated that individuals with type 1 diabetes mellitus (T1DM) exhibit impaired sweating and increased rectal temperature (i.e., heat storage) during exercise compared with healthy controls. Our purpose in this study was to investigate the consequences of T1DM on post-exercise thermal homeostasis. Sixteen participants (eight controls matched with eight T1DM) performed 90 min of cycling followed by 60 min of seated recovery. Esophageal and rectal temperatures, sweating (forearm, chest, and upper back), skin blood flow [forearm and upper back, presented as cutaneous vascular conductance (CVC)], and blood pressure [mean arterial pressure (MAP)] were measured at baseline and throughout recovery. Esophageal temperature was similar during baseline and recovery between groups (P = 0.88). However, rectal temperature was elevated in our T1DM group throughout recovery (P = 0.05). Sweating and CVC were similar between groups at all sites from 10-min post-exercise until the end of recovery (P ≥ 0.16). While absolute MAP was similar between groups (P = 0.43), the overall decrease in MAP post-exercise was greater in controls from 20 min (T1DM: - 8 ± 5 vs control: - 13 ± 6 mmHg, P = 0.03) until the end of recovery. We conclude that despite increased heat storage during exercise, individuals with T1DM exhibit a suppression in heat loss similar to their healthy counterparts during recovery.
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Affiliation(s)
- R McGinn
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - M R Carter
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - J Barrera-Ramirez
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - R J Sigal
- Departments of Medicine, Cardiac Sciences and Community Health Sciences, Faculties of Medicine and Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - A D Flouris
- FAME Laboratory, Department of Exercise Science, University of Thessaly, Trikala, Greece
| | - G P Kenny
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
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300
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Li HY, Wei JN, Chuang LM, Wu ET, Lee CN. Screening and diagnosis of diabetes in children and pregnant women. Diabetes Res Clin Pract 2014; 106 Suppl 2:S288-90. [PMID: 25550055 DOI: 10.1016/s0168-8227(14)70731-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The incidence and prevalence of diabetes in children has increased in recent decades. The findings of a nationwide screening program in Taiwan show that type 2 diabetes has replaced type 1 diabetes as the leading cause of diabetes in children and adolescents. Important risk factors for diabetes in children are high or low birth weights, obesity, and a family history of diabetes. The incidence of diabetes reaches plateaus during puberty. Therefore, we have developed a strategy to screen seventh-grade children with diabetes based on urinalysis and a risk score. Gestational diabetes is associated with various adverse perinatal outcomes, particularly macrosomia and birth injury, and a higher rate of Cesarean section. The 100 g oral glucose tolerance test (OGTT) for gestational diabetes was initially designed to predict maternal diabetes after delivery, and was revised by Carpenter and Coustan to predict adverse fetal outcomes. In 2010, the International Association of the Diabetes and Pregnancy Study Groups (IADPSG) proposed a 75 g OGTT to define gestational diabetes, resulting in a significant increase in the prevalence of gestational diabetes. Our data suggest that adopting the new IADPSG criteria is reasonable, since they reduce adverse perinatal outcomes and are cost-efficient.
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Affiliation(s)
- Hung-Yuan Li
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
| | - Jung-Nan Wei
- Chia Nan University of Pharmacy and Science, Tainan, 717, Taiwan
| | - Lee-Ming Chuang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - En-Tzu Wu
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chien-Nan Lee
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
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