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Alkudmani ZS, Alshammary AF, Ali Khan I. Molecular Effect of Variants in Toll-like Receptor 4 Gene in Saudi Patients with Type 2 Diabetes Mellitus. Cells 2023; 12:2340. [PMID: 37830554 PMCID: PMC10571932 DOI: 10.3390/cells12192340] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/15/2023] [Accepted: 09/21/2023] [Indexed: 10/14/2023] Open
Abstract
Single-nucleotide polymorphisms (SNPs) in the Toll-like receptor 4 (TLR4) gene have been documented in type 2 diabetes mellitus (T2DM) and other diseases in the Saudi population. We investigated the relationship between rs11536889, rs4986790, and rs4986791 SNPs in the TLR4 gene and T2DM in the Saudi population; 105 patients with T2DM and 105 healthy controls were analyzed. The TLR4 gene was amplified through PCR, followed by restriction fragment length polymorphism analysis for rs4986791 and Sanger sequencing for rs11536889 and rs4986790 SNPs. The clinical and biochemical characteristics were associated with T2DM (p < 0.05). The rs11536889, rs4986790, and rs4986791 SNPs in control subjects followed the Hardy-Weinberg equilibrium (p > 0.05). Alleles were associated with rs11536889, rs4986791, heterozygous codominant, and dominant models (p < 0.05). However, the rs4986790 SNP was not associated with T2DM (p > 0.05). Logistic regression analysis showed that high-density lipoprotein cholesterol (HDLc) levels were associated with T2DM (p < 0.001). Analysis of variance showed that waist (p = 0.0005) and hip circumferences (p = 0.002) in rs4986790 and rs4986791 SNPs, in SBP (p = 0.001), DBP (p = 0.002), and HDLc levels (p = 0.003), were associated with T2DM subjects. T2DM was also associated with the haplotype (p < 0.001) but not with linkage disequilibrium. The gene-gene interaction was associated with the three SNPs studied in patients with T2DM according to the generalized multifactor dimensionality reduction model (p < 0.0001). Dendrogram and graphical depletion analysis revealed a moderate association in patients with T2DM. The results suggest that rs11536889 and rs4986790 SNPs are genotypically and allelically associated with T2DM in Saudi patients. Future functional studies are recommended to validate the genetic roles of these SNPs in the pathogenesis and progression of diseases.
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Affiliation(s)
| | | | - Imran Ali Khan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia; (Z.S.A.); (A.F.A.)
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Tehsin S, Kausar S, Jameel A. Diabetic wounds and artificial intelligence: A mini-review. World J Clin Cases 2023; 11:84-91. [PMID: 36687200 PMCID: PMC9846989 DOI: 10.12998/wjcc.v11.i1.84] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/12/2022] [Accepted: 12/23/2022] [Indexed: 01/04/2023] Open
Abstract
Diabetic wound takes longer time to heal due to micro and macro-vascular ailment. This longer healing time can lead to infections and other health complications. Foot ulcers are one of the most common diabetic wounds. These are one of the leading cause of amputations. Medical science is continuously striving for improving quality of human life. A recent trend of amalgamation of knowledge, efforts and technological advancement of medical science experts and artificial intelligence researchers, has made tremendous success in diagnosis, prognosis and treatment of a variety of diseases. Diabetic wounds are no exception, as artificial intelligence experts are putting their research efforts to apply latest technological advancements in the field to help medical care personnel to deal with diabetic wounds in more effective manner. The presented study reviews the diagnostic and treatment research under the umbrella of Artificial Intelligence and computational science, for diabetic wound healing. Framework for diabetic wound assessment using artificial intelligence is presented. Moreover, this review is focused on existing and potential contribution of artificial intelligence to improve medical services for diabetic wound patients. The article also discusses the future directions for the betterment of the field that can lead to facilitate both, clinician and patients.
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Affiliation(s)
- Samabia Tehsin
- Computer Science, Bahria University, Karachi 75260, Sindh, Pakistan
| | - Sumaira Kausar
- Computer Science, Bahria University, Islamabad 46000, Pakistan
| | - Amina Jameel
- Department of Computer Engineering, Bahria University, Islamabad 46000, Pakistan
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3
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Mousa KM, Mousa FA, Mohamed HS, Elsawy MM. Prediction of Foot Ulcers Using Artificial Intelligence for Diabetic Patients at Cairo University Hospital, Egypt. SAGE Open Nurs 2023; 9:23779608231185873. [PMID: 37435577 PMCID: PMC10331222 DOI: 10.1177/23779608231185873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/10/2023] [Accepted: 06/15/2023] [Indexed: 07/13/2023] Open
Abstract
Introduction In Egypt, diabetic foot ulcers markedly contribute to the morbidity and mortality of diabetic patients. Accurately predicting the risk of diabetic foot ulcers could dramatically reduce the enormous burden of amputation. Objective The aim of this study is to design an artificial intelligence-based artificial neural network and decision tree algorithms for the prediction of diabetic foot ulcers. Methods A case-control study design was utilized to fulfill the aim of this study. The study was conducted at the National Institute of Diabetes and Endocrine Glands, Cairo University Hospital, Egypt. A purposive sample of 200 patients was included. The tool developed and used by the researchers was a structured interview questionnaire including three parts: Part I: demographic characteristics; Part II: medical data; and Part III: in vivo measurements. Artificial intelligence methods were used to achieve the aim of this study. Results The researchers used 19 significant attributes based on medical history and foot images that affect diabetic foot ulcers and then proposed two classifiers to predict the foot ulcer: a feedforward neural network and a decision tree. Finally, the researchers compared the results between the two classifiers, and the experimental results showed that the proposed artificial neural network outperformed a decision tree, achieving an accuracy of 97% in the automated prediction of diabetic foot ulcers. Conclusion Artificial intelligence methods can be used to predict diabetic foot ulcers with high accuracy. The proposed technique utilizes two methods to predict the foot ulcer; after evaluating the two methods, the artificial neural network showed a higher improvement in performance than the decision tree algorithm. It is recommended that diabetic outpatient clinics develop health education and follow-up programs to prevent complications from diabetes.
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Affiliation(s)
- Khadraa Mohamed Mousa
- Community Health Nursing Department, Faculty of Nursing, Cairo University, Cairo, Egypt
| | - Farid Ali Mousa
- Information Technology Department, Faculty of Computers and Artificial Intelligence, Beni-Suef University, Beni-Suef, Egypt
| | - Helalia Shalabi Mohamed
- Community Health Nursing Department, Faculty of Nursing, Cairo University, Cairo, Egypt
- Community Health Nursing, College of Nursing, PAAET, Safat, Kuwait
| | - Manal Mohamed Elsawy
- Community Health Nursing Department, Faculty of Nursing, Cairo University, Cairo, Egypt
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Hu YJ, Song CS, Jiang N. Single nucleotide variations in the development of diabetic foot ulcer: A narrative review. World J Diabetes 2022; 13:1140-1153. [PMID: 36578869 PMCID: PMC9791576 DOI: 10.4239/wjd.v13.i12.1140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/24/2022] [Accepted: 12/05/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetes mellitus has become a global health problem, and the number of patients with diabetic foot ulcers (DFU) is rapidly increasing. Currently, DFU still poses great challenges to physicians, as the treatment is complex, with high risks of infection, recurrence, limb amputation, and even death. Therefore, a comprehensive understanding of DFU pathogenesis is of great importance. In this review, we summarized recent findings regarding the DFU development from the perspective of single-nucleotide variations (SNVs). Studies have shown that SNVs located in the genes encoding C-reactive protein, interleukin-6, tumor necrosis factor-alpha, stromal cell-derived factor-1, vascular endothelial growth factor, nuclear factor erythroid-2-related factor 2, sirtuin 1, intercellular adhesion molecule 1, monocyte chemoattractant protein-1, endothelial nitric oxide synthase, heat shock protein 70, hypoxia inducible factor 1 alpha, lysyl oxidase, intelectin 1, mitogen-activated protein kinase 14, toll-like receptors, osteoprotegerin, vitamin D receptor, and fibrinogen may be associated with the development of DFU. However, considering the limitations of the present investigations, future multi-center studies with larger sample sizes, as well as in-depth mechanistic research are warranted.
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Affiliation(s)
- Yan-Jun Hu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Southern Medical University Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
| | - Chen-Sheng Song
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Southern Medical University Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
| | - Nan Jiang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Southern Medical University Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
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Chemello G, Salvatori B, Morettini M, Tura A. Artificial Intelligence Methodologies Applied to Technologies for Screening, Diagnosis and Care of the Diabetic Foot: A Narrative Review. BIOSENSORS 2022; 12:985. [PMID: 36354494 PMCID: PMC9688674 DOI: 10.3390/bios12110985] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/26/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
Diabetic foot syndrome is a multifactorial pathology with at least three main etiological factors, i.e., peripheral neuropathy, peripheral arterial disease, and infection. In addition to complexity, another distinctive trait of diabetic foot syndrome is its insidiousness, due to a frequent lack of early symptoms. In recent years, it has become clear that the prevalence of diabetic foot syndrome is increasing, and it is among the diabetes complications with a stronger impact on patient's quality of life. Considering the complex nature of this syndrome, artificial intelligence (AI) methodologies appear adequate to address aspects such as timely screening for the identification of the risk for foot ulcers (or, even worse, for amputation), based on appropriate sensor technologies. In this review, we summarize the main findings of the pertinent studies in the field, paying attention to both the AI-based methodological aspects and the main physiological/clinical study outcomes. The analyzed studies show that AI application to data derived by different technologies provides promising results, but in our opinion future studies may benefit from inclusion of quantitative measures based on simple sensors, which are still scarcely exploited.
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Affiliation(s)
- Gaetano Chemello
- CNR Institute of Neuroscience, Corso Stati Uniti 4, 35127 Padova, Italy
| | | | - Micaela Morettini
- Department of Information Engineering, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60131 Ancona, Italy
| | - Andrea Tura
- CNR Institute of Neuroscience, Corso Stati Uniti 4, 35127 Padova, Italy
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Dutta D, Nagappa M, Sreekumaran Nair BV, Das SK, Wahatule R, Sinha S, Ravi V, Taly AB, Debnath M. Variations within Toll-like receptor (TLR) and TLR signalling pathway-related genes and their synergistic effects on the risk of Guillain-Barré Syndrome. J Peripher Nerv Syst 2022; 27:131-143. [PMID: 35138004 DOI: 10.1111/jns.12484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 11/28/2022]
Abstract
Guillain-Barré Syndrome (GBS) is the commonest postinfectious polyradiculopathy. Though genetic background of the host seems to play an important role in the susceptibility to GBS, genes conferring major risk are not yet known. Dysregulation of Toll-like receptor (TLR) molecules exacerbates immune-inflammatory responses and the genetic variations within TLR pathway-related genes contribute to differential risk to infection. To delineate the impact of genetic variations within TLR2, TLR3, and TLR4 genes and TLR signaling pathway-related genes such as MyD88, TRIF, TRAF3, TRAF6, IRF3, NFκβ1, and IκBα on risk of developing GBS. Fourteen polymorphisms located within TLR2 (rs3804099; rs111200466), TLR3 (rs3775290; rs3775291), TLR4 (rs1927911, rs11536891), MyD88 (rs7744, rs4988453), TRIF (rs8120 TRAF3 (rs12147254), TRAF6 (rs4755453), IRF3 (rs2304204), NFκβ1 (rs28362491) and IκBα (rs696) genes were genotyped in 150 GBS patients and 150 healthy subjects either by PCR-RFLP or TaqMan Allelic Discrimination Assay. Genotypes of two polymorphic variants, Del/Del of rs111200466 Insertion and Deletion (INDEL) polymorphism of TLR2 gene and TT of rs3775290 single nucleotide polymorphism (SNP) of TLR3 gene had significantly higher frequencies among GBS patients, while the frequencies of TT genotype of rs3804099 of TLR2 gene and TT genotype of rs11536891 SNP of TLR4 gene were significantly higher in controls. Gene-gene interaction study by Multifactor Dimensionality Reduction (MDR) analysis also suggested a significant combined effect of TLR2, and NFκβ1 genes on the risk of GBS. The SNPs in the IκBα and IRF3 genes correlated with severity of GBS. The genes encoding TLRs and TLR signalling pathway-related molecules could serve as crucial genetic markers of susceptibility and severity of GBS. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Debprasad Dutta
- Department of Human Genetics, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Madhu Nagappa
- Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Binu V Sreekumaran Nair
- Department of Biostatistics, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Sumit Kumar Das
- Department of Biostatistics, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Rahul Wahatule
- Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Sanjib Sinha
- Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Vasanthapuram Ravi
- Department of Neurovirology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Arun B Taly
- Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Monojit Debnath
- Department of Human Genetics, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
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Štotl I, Blagus R, Urbančič-Rovan V. Individualised screening of diabetic foot: creation of a prediction model based on penalised regression and assessment of theoretical efficacy. Diabetologia 2022; 65:291-300. [PMID: 34741637 DOI: 10.1007/s00125-021-05604-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 08/23/2021] [Indexed: 01/22/2023]
Abstract
AIMS/HYPOTHESIS A large proportion of people with diabetes do not receive proper foot screening due to insufficiencies in healthcare systems. Introducing an effective risk prediction model into the screening protocol would potentially reduce the required screening frequency for those considered at low risk for diabetic foot complications. The main aim of the study was to investigate the value of individualised risk assignment for foot complications for optimisation of screening. METHODS From 2015 to 2020, 11,878 routine follow-up foot investigations were performed in the tertiary diabetes clinic. From these, 4282 screening investigations with complete data containing all of 18 designated variables collected at regular clinical and foot screening visits were selected for the study sample. Penalised logistic regression models for the prediction of loss of protective sensation (LOPS) and loss of peripheral pulses (LPP) were developed and evaluated. RESULTS Using leave-one-out cross validation (LOOCV), the penalised regression model showed an AUC of 0.84 (95% CI 0.82, 0.85) for prediction of LOPS and 0.80 (95% CI 0.78, 0.83) for prediction of LPP. Calibration analysis (based on LOOCV) presented consistent recall of probabilities, with a Brier score of 0.08 (intercept 0.01 [95% CI -0.09, 0.12], slope 1.00 [95% CI 0.92, 1.09]) for LOPS and a Brier score of 0.05 (intercept 0.01 [95% CI -0.12, 0.14], slope 1.09 [95% CI 0.95, 1.22]) for LPP. In a hypothetical follow-up period of 2 years, the regular screening interval was increased from 1 year to 2 years for individuals at low risk. In individuals with an International Working Group on the Diabetic Foot (IWGDF) risk 0, we could show a 40.5% reduction in the absolute number of screening examinations (3614 instead of 6074 screenings) when a 10% risk cut-off was used and a 26.5% reduction (4463 instead of 6074 screenings) when the risk cut-off was set to 5%. CONCLUSIONS/INTERPRETATION Enhancement of the protocol for diabetic foot screening by inclusion of a prediction model allows differentiation of individuals with diabetes based on the likelihood of complications. This could potentially reduce the number of screenings needed in those considered at low risk of diabetic foot complications. The proposed model requires further refinement and external validation, but it shows the potential for improving compliance with screening guidelines.
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Affiliation(s)
- Iztok Štotl
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Ljubljana, Slovenia.
| | - Rok Blagus
- Institute for Biostatistics and Medical Informatics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- Faculty of Sports, University of Ljubljana, Ljubljana, Slovenia
| | - Vilma Urbančič-Rovan
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Zhang J, Chen J, Gao C, Sun X, Wang L, Hu Z, Li G, Wang J, Wang A. Maggot treatment promotes healing of diabetic foot ulcer wounds possibly by upregulating Treg levels. Diabetes Res Clin Pract 2022; 184:109187. [PMID: 35016990 DOI: 10.1016/j.diabres.2021.109187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 11/30/2021] [Accepted: 12/23/2021] [Indexed: 11/03/2022]
Abstract
PURPOSE Through the study of regulatory T cells (Tregs), we found a possible way to promote the healing of diabetic foot ulcers (DFUs) with maggot treatment and investigated the associated mechanism. METHODS Immunohistochemistry was used to examinetissues from DFU patients treated with or without maggot debridement therapy (MDT). The expression of the signature Treg molecule Foxp3, interleukin-10 (IL-10), transforming growth factor-beta (TGF-β), and interferon regulatory factor 4 (IRF-4) in patients with DFU treated with or without MDT was tested by real-time PCR (RT-PCR). CD4+ T cells from mouse spleen cells were cocultured in vitro with maggot excretions/secretions (ES), and Foxp3, IL-10, TGF-β, and IRF-4 levels were measured by RT-PCR. RESULTS Foxp3 expression was obviously increased in DFU patients treated using MDT but less pronounced in those treated without MDT (P < 0.05). Foxp3, IL-10, TGF-β, and IRF-4 gene expression levels were higher in DFU patients treated with MDT than in those treated without MDT. Moreover, in vitro coculture of mouse spleen cells with ESs produced results consistent with the in vivo results (P < 0.001). CONCLUSION MDT/ESs can obviously upregulate the Treg level and may affect DFU healing in different ways, suggesting a new direction for the future treatment of DFU.
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Affiliation(s)
- Jie Zhang
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China; Nanjing Prevention and Treatment Center for Occupational Diseases, Nanjing, Jiangsu Province, China
| | - Jin'an Chen
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Chunchen Gao
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Xinjuan Sun
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Lei Wang
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Zhiwei Hu
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Gai Li
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China
| | - Jing Wang
- Translational Medicine Center, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China.
| | - Aiping Wang
- Department of Endocrinology, Nanjing JunXie Hospital, Nanjing, Jiangsu Province, China.
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Bhamidipati T, Kumar M, Verma SS, Mohanty SK, Kacar S, Reese D, Martinez MM, Kamocka MM, Dunn KW, Sen CK, Singh K. Epigenetic basis of diabetic vasculopathy. Front Endocrinol (Lausanne) 2022; 13:989844. [PMID: 36568089 PMCID: PMC9780391 DOI: 10.3389/fendo.2022.989844] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) causes peripheral vascular disease because of which several blood-borne factors, including vital nutrients fail to reach the affected tissue. Tissue epigenome is sensitive to chronic hyperglycemia and is known to cause pathogenesis of micro- and macrovascular complications. These vascular complications of T2DM may perpetuate the onset of organ dysfunction. The burden of diabetes is primarily because of a wide range of complications of which nonhealing diabetic ulcers represent a major component. Thus, it is imperative that current research help recognize more effective methods for the diagnosis and management of early vascular injuries. This review addresses the significance of epigenetic processes such as DNA methylation and histone modifications in the evolution of macrovascular and microvascular complications of T2DM.
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Affiliation(s)
- Theja Bhamidipati
- Department of Vascular Surgery, Jefferson-Einstein Medical Center, Philadelphia, PA, United States
| | - Manishekhar Kumar
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Sumit S. Verma
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Sujit K. Mohanty
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Sedat Kacar
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Diamond Reese
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Michelle M. Martinez
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Malgorzata M. Kamocka
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Kenneth W. Dunn
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Chandan K. Sen
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
- *Correspondence: Kanhaiya Singh, ; Chandan K. Sen,
| | - Kanhaiya Singh
- Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN, United States
- *Correspondence: Kanhaiya Singh, ; Chandan K. Sen,
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Abdelsalam M, Allam SH, Zohdy M, Magdy H, Mostafa M. TLR4 gene polymorphisms in Egyptian vitiligo patients: insights into emerging association with clinical activity, family history, and response to therapy. J Genet Eng Biotechnol 2021; 19:132. [PMID: 34468896 PMCID: PMC8410933 DOI: 10.1186/s43141-021-00218-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Vitiligo is a common pigmentary disorder in which autoimmunity has been suggested to play an important role. Toll-like receptor (TLR) family are recognized different molecular structures expressed on immune cells and have been implicated in a number of autoimmune diseases (AIDs) such as vitiligo. The purpose of this study was to investigate the possible association between TLR4 gene polymorphisms: rs11536858, rs1927911, rs1927914 in Egyptian vitiligo patients and their clinical data, their response to therapy. Using PCR-RFLP for TLR4 gene polymorphisms (rs11536858, rs1927911, and rs1927914), both alleles and genotypes were determined after extraction of DNA in a case-control study of 100 vitiligo Egyptian patients and 100 matched age and sex controls. RESULTS The distribution of the protective CT genotype of rs1927914 was higher in the control group. After dividing both patients and controls into 2 age groups (below 18 and above 18 years), no significant associations between the genotypes of the selected TLR4 SNPs and the demographic and clinical data of the vitiligo patients in group 1 (below 18 years) were observed. For group 2 (above 18 years), also no significant associations were found except for the association between the CC genotype of rs1927914 and psychiatric trauma, from one side, and between the CT genotype of rs1927911 and alopecia, from the other side. The association between combined genotypes and the risk of vitiligo showed either higher frequency in patients (risky), or controls (protective), and some equal frequencies (non-significant). The association between haplotypes and risk of vitiligo in patients' group revealed the highest frequency for the risky ATT and the least frequency for ATC haplotypes. In control group, the protective GCT haplotype showed the highest frequency while the GTC and GCC showed the least frequency. No significant correlations of haplotypes with clinical and demographic data of selected patients' group were observed apart from that between ACC haplotype and family history of AIDs and between ATT haplotype and remission after phototherapy. CONCLUSIONS The significant relationship between TLR4 gene polymorphisms and vitiligo patients charcteristics clarify the role of innate immunity in pathogensis of vitiligo and its effect on the used therapies.
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Affiliation(s)
- Maha Abdelsalam
- Immunology Unit, Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt.,Department of Immunology, Egypt Center for Research and Regenerative Medicine (ECRRM), Cairo, 11517, Egypt
| | - Sherihan H Allam
- Dermatology Department, Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Marwa Zohdy
- Dermatology Department, Faculty of medicine, Mansoura University, Mansoura, Egypt.
| | - Hend Magdy
- Public Health & Community Department, Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Maged Mostafa
- Immunology Unit, Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Abdelsalam M, Abd Elmagid DS, Magdy H, El-Sabbagh AM, Mostafa M. The association between toll-like receptor 4 (TLR4) genotyping and the risk of epilepsy in children. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-00102-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Abstract
Background
Epilepsy is one of the most widely recognized neurological disorders; unfortunately, twenty to thirty percent of patients do not get cured from epilepsy, despite many trials of antiepileptic drug (AED) therapy. Immunotherapy may be a viable treatment strategy in a subset of epileptic patients. The association between Toll-like receptor polymorphisms and epilepsy clarifies the role of the immune system in epilepsy and its response to the drug. Thus, this study will focus on the relation between TLR4 rs1927914, rs11536858, rs1927911SNPs, and epilepsy in an Egyptian case-control study to assess their link to antiepileptic drug response.
Results
According to TLR4 rs1927914, there is a significant association between the SNP and the development of epilepsy, as CC genotype is 15.3 times more at risk for developing epilepsy than TT genotype, and CT is 11.1 times more at risk for developing epilepsy than TT. Also, patients with CC genotypes are 6.3 times more at risk for developing primary epilepsy than TT genotype.
According to rs11536858, there is a significant association between cases and control groups, as AA genotypes are found to be more at risk for developing epilepsy than GG genotypes. Also, there is a statistically significant association between clonazepam resistance and rs11536858, as p value < 0.001* with the highest frequency of TT genotypes at 4.3%.
According to rs1927911, there are no significant results between the cases and the control groups or between drug-responsive and drug resistance.
Conclusion
Possible involvement of the Toll-like receptor clarifies the importance of innate immunity in initiating seizures and making neuronal hyperexcitability. In this work, multiple significant associations between TLR SNPs and epilepsy, epileptic phenotype, and drug-resistant epilepsy have been found. More studies with bigger sample sizes and different techniques with different SNPs are recommended to find the proper immunotherapy for epilepsy instead of the treatment by antiepileptic drugs.
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Piipponen M, Li D, Landén NX. The Immune Functions of Keratinocytes in Skin Wound Healing. Int J Mol Sci 2020; 21:E8790. [PMID: 33233704 PMCID: PMC7699912 DOI: 10.3390/ijms21228790] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
As the most dominant cell type in the skin, keratinocytes play critical roles in wound repair not only as structural cells but also exerting important immune functions. This review focuses on the communications between keratinocytes and immune cells in wound healing, which are mediated by various cytokines, chemokines, and extracellular vesicles. Keratinocytes can also directly interact with T cells via antigen presentation. Moreover, keratinocytes produce antimicrobial peptides that can directly kill the invading pathogens and contribute to wound repair in many aspects. We also reviewed the epigenetic mechanisms known to regulate keratinocyte immune functions, including histone modifications, non-protein-coding RNAs (e.g., microRNAs, and long noncoding RNAs), and chromatin dynamics. Lastly, we summarized the current evidence on the dysregulated immune functions of keratinocytes in chronic nonhealing wounds. Based on their crucial immune functions in skin wound healing, we propose that keratinocytes significantly contribute to the pathogenesis of chronic wound inflammation. We hope this review will trigger an interest in investigating the immune roles of keratinocytes in chronic wound pathology, which may open up new avenues for developing innovative wound treatments.
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Affiliation(s)
| | | | - Ning Xu Landén
- Center for Molecular Medicine, Ming Wai Lau Centre for Reparative Medicine, Department of Medicine Solna, Dermatology and Venereology Division, Karolinska Institute, 17176 Stockholm, Sweden; (M.P.); (D.L.)
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Fan J, Liang R. Quantitative assessment of TLR4 gene polymorphisms and T2DM risk: A meta-analysis. Mol Genet Genomic Med 2020; 8:e1466. [PMID: 32822111 PMCID: PMC7549608 DOI: 10.1002/mgg3.1466] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/07/2020] [Accepted: 07/31/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Numerous studies have evaluated the association between TLR4 gene polymorphisms and T2DM risk. However, the findings were inconsistent and controversial. METHODS In order to drive a more precise estimation, we carried out a meta-analysis based on 41 studies involving 23,250 cases and 24,760 controls. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the strength of association. RESULTS Our meta-analysis provides evidence that rs4986790 polymorphism was associated with an increased risk of T2DM in Asian (AG vs. AA, OR = 1.23, 95% CI = 1.01-1.50, p = 0.042; G vs. A, OR = 1.21, 95% CI = 1.01-1.44, p = 0.041). Rs4986791 polymorphism was related to an increased risk of T2DM both in Asian (AG vs. AA, OR = 1.76, 95% CI = 1.11-2.80, p = 0.017; G vs. A, OR = 1.63, 95% CI = 1.04-2.55, p = 0.034) and Caucasian (GG vs. AA, OR = 2.42, 95% CI = 1.23-4.75, p = 0.010). Rs11536889 polymorphism may have a protective effect on T2DM in Chinese populations (CC vs. GG, OR = 0.62, 95% CI = 0.40-0.96, p = 0.031; GC vs. GG, OR = 0.77, 95% CI = 0.61-0.98, p = 0.034; CC vs. GC/GG, OR = 0.81, 95% CI = 0.69-0.96, p = 0.013; C vs. G, OR = 0.76, 95% CI = 0.59-0.97, p = 0.027), whereas rs1927911 may have no impact. CONCLUSIONS These findings supported that rs4986790, rs4986791, and rs11536889 may contribute to the risk of T2DM.
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Affiliation(s)
- Jinzhuo Fan
- Department of Traditional Chinese Medicine and Acupuncture, Hainan Hospital of General Hospital of Chinese PLA, Sanya, China
| | - Renxian Liang
- Department of Cardiovascular and Endocrinology, Beibei Traditional Chinese Medicine Hospital, Chongqing, China
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Vishweswaraiah S, Ramachandra NB, Jayaraj BS, Holla AD, Chakraborty S, Agrawal A, Mahesh PA. Haplotype analysis of ADAM33 polymorphisms in asthma: A pilot study. Indian J Med Res 2020; 150:272-281. [PMID: 31719298 PMCID: PMC6886134 DOI: 10.4103/ijmr.ijmr_698_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background & objectives ADAM33 is implicated as a potentially strong candidate gene for asthma and bronchial hyper-responsiveness. Many polymorphisms of ADAM33 have been studied along with ADAM33 expression in various cells of the lungs. Haplotype analysis also showed association with asthma in different populations across the world. Therefore, the aim of this study was to perform a comprehensive screening of ADAM33 polymorphisms in adult patients with asthma. Methods Thirty five polymorphisms of ADAM33 were genotyped in 55 patients with asthma and 53 controls. The association of single nucleotide polymorphisms (SNPs) and haplotypes with phenotypes of asthma was analysed. Results The genotype, minor allele frequency, odds ratio and Hardy-Weinberg equilibrium did not show any significant difference among cases and controls. No association was found between SNPs of ADAM33 with the severity of asthma. Correlation analysis of ADAM33 SNPs to the phenotypes, based on clinical variables and allergen sensitization, did not show significant difference. Haplotype analysis showed that rs2280090 and rs2280091 were associated with asthma in the patient group. Interpretation & conclusions Haplotype analysis showed an association of the two SNP variations with asthma. These SNPs lead to amino acid change and are prone to phosphorylation, which may affect expression levels and protein function of ADAM33 and asthma susceptibility.
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Affiliation(s)
- Sangeetha Vishweswaraiah
- Department of Studies in Genetics & Genomics, Genetics & Genomics Lab, University of Mysore, Mysuru, Karnataka, India
| | - Nallur B Ramachandra
- Department of Studies in Genetics & Genomics, Genetics & Genomics Lab, University of Mysore, Mysuru, Karnataka, India
| | - B S Jayaraj
- Department of Respiratory Medicine, JSS Medical College, JSS Academy of Higher Education and Research, Mysuru, Karnataka, India
| | | | - Samarpana Chakraborty
- Center of Excellence, Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics & Integrative Biology, Delhi, India
| | - Anurag Agrawal
- Center of Excellence, Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics & Integrative Biology, Delhi, India
| | - Padukudru A Mahesh
- Department of Respiratory Medicine, JSS Medical College, JSS Academy of Higher Education and Research, Mysuru, Karnataka, India
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Ferreira ACBH, Ferreira DD, Oliveira HC, Resende ICD, Anjos A, Lopes MHBDM. Competitive neural layer-based method to identify people with high risk for diabetic foot. Comput Biol Med 2020; 120:103744. [PMID: 32421649 DOI: 10.1016/j.compbiomed.2020.103744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND OBJECTIVE To automatically identify patients with diabetes mellitus (DM) who have high risk of developing diabetic foot, via an unsupervised machine learning technique. METHODS We collected a new database containing 54 known risk factors from 250 patients diagnosed with diabetes mellitus. The database also contained a separate validation cohort composed of 73 subjects, where the perceived risk was annotated by expert nurses. A competitive neuron layer-based method was used to automatically split training data into two risk groups. RESULTS We found that one of the groups was composed of patients with higher risk of developing diabetic foot. The dominant variables that described group membership via our method agreed with the findings from other studies, and indicated a greater risk for developing such a condition. Our method was validated on the available test data, reaching 71% sensitivity, 100% specificity, and 90% accuracy. CONCLUSIONS Unsupervised learning may be deployed to screen patients with diabetes mellitus, pointing out high-risk individuals who require priority follow-up in the prevention of diabetic foot with very high accuracy. The proposed method is automatic and does not require clinical examinations to perform risk assessment, being solely based on the information of a questionnaire answered by patients. Our study found that discriminant variables for predicting risk group membership are highly correlated with expert opinion.
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Affiliation(s)
| | - Danton Diego Ferreira
- Automation Department, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil.
| | | | | | - André Anjos
- Idiap Research Institute, Martigny, Switzerland
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Viswanathan V, Juttada U, Babu M. Efficacy of Recombinant Human Epidermal Growth Factor (Regen-D 150) in Healing Diabetic Foot Ulcers: A Hospital-Based Randomized Controlled Trial. INT J LOW EXTR WOUND 2019; 19:158-164. [PMID: 31878810 DOI: 10.1177/1534734619892791] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To validate the efficacy of recombinant human epidermal growth factor (hEGH) in healing diabetic foot ulcers (DFUs) at biochemical and molecular levels. A total of 50 noninfected DFU subjects were recruited for the study and divided into 2 groups based on the treatment application on the subjects. Group 1: DFU subjects treated with hEGH gel-based product called Regen-D 150 (n = 27) and group 2: DFU subjects treated with alternative placebo as the control group (n = 23). Patients were observed for 30 days and punch biopsy was taken at days 0 and 14. Histologic analysis was done to study the matrix alignment, cellular infiltration, and differentiation of epithelial layers. Biochemical analysis was done to quantitatively estimate the amount of collagen and proteoglycans regenerated in the wound area. Complete healing of ulcers was observed in 21 (78%) subjects in group 1, whereas only 12 (52%) subjects among group 2 reported of complete healing of ulcer after completion of the study period of 30 days. Collagen and fibroblasts were significantly developed in group 1 when observed in the follow-up samples. Healing time of the wound among the group 1 subjects was significantly less than the group 2 subjects (45 ± 12 vs 72 ± 18 days, P < .0001) and even showed a better blood glucose level. Early and regular application of the hEGH on DFUs will lead to prevention of leg amputations and would serve to act as a major treatment therapy for healing of chronic wounds.
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Affiliation(s)
- Vijay Viswanathan
- MV Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Centre, WHO Collaborating Centre for Research, Education and Training in Diabetes & IDF Centre for Excellence in Diabetes Care, Chennai, India
| | - Udyama Juttada
- MV Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Centre, WHO Collaborating Centre for Research, Education and Training in Diabetes & IDF Centre for Excellence in Diabetes Care, Chennai, India
| | - Mary Babu
- Central Leather Research Institute (CLRI), Chennai, India
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17
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Banerjee J, Lodhi N, Nguyen BN. The Role of Poly(ADP-Ribose) Polymerase-1 in Cutaneous Wound Healing. Adv Wound Care (New Rochelle) 2019; 8:634-643. [PMID: 31750014 DOI: 10.1089/wound.2018.0821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 03/13/2019] [Indexed: 12/15/2022] Open
Abstract
Critical Issue: Chronic nonhealing wounds of the lower extremities resulting in major amputations are a major health problem worldwide. Significance: Diabetes and ischemia are two major etiologies of nonhealing wounds of the lower extremities. Hyperglycemia from diabetes and oxidative stress from ischemia activate polyadenosine diphosphate (ADP)-ribose polymerase-1 (PARP-1), which is a nuclear enzyme that is best known for its role in DNA repair. However, the exact function of PARP-1 in ischemic/diabetic wound healing has not been well studied. Recent Advances: Poly-ADP-ribose (PAR) polymer has been detected in the wound bed and many of the PARylation-related reactions (oxidative stress response, expression of inflammatory cytokines and chemokines, cell proliferation, and migration) are important in the wound healing process. However, the role of PARP-1 in wound healing and the potential of targeting PARP-1 therapeutically in wounds are only recently being elucidated, with much still unknown. This review summarizes the recent advances in this field, highlighting some of the mechanisms through which PARP-1 may affect normal wound closure. Future Directions: The review also presents a perspective on some of the downstream targets of PARP-1 that may be explored for their role in wound healing and discusses about the therapeutic potential of PARP inhibitors for wound healing.
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Affiliation(s)
- Jaideep Banerjee
- Department of Vascular Surgery, George Washington University, Washington, District of Columbia
| | - Niraj Lodhi
- Department of Biomedical Research, Hackensack University Medical Center, Hackensack, New Jersey
| | - Bao-Ngoc Nguyen
- Department of Vascular Surgery, George Washington University, Washington, District of Columbia
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18
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Abhari S, Niakan Kalhori SR, Ebrahimi M, Hasannejadasl H, Garavand A. Artificial Intelligence Applications in Type 2 Diabetes Mellitus Care: Focus on Machine Learning Methods. Healthc Inform Res 2019; 25:248-261. [PMID: 31777668 PMCID: PMC6859270 DOI: 10.4258/hir.2019.25.4.248] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 10/06/2019] [Accepted: 10/09/2019] [Indexed: 12/18/2022] Open
Abstract
Objectives The incidence of type 2 diabetes mellitus has increased significantly in recent years. With the development of artificial intelligence applications in healthcare, they are used for diagnosis, therapeutic decision making, and outcome prediction, especially in type 2 diabetes mellitus. This study aimed to identify the artificial intelligence (AI) applications for type 2 diabetes mellitus care. Methods This is a review conducted in 2018. We searched the PubMed, Web of Science, and Embase scientific databases, based on a combination of related mesh terms. The article selection process was based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Finally, 31 articles were selected after inclusion and exclusion criteria were applied. Data gathering was done by using a data extraction form. Data were summarized and reported based on the study objectives. Results The main applications of AI for type 2 diabetes mellitus care were screening and diagnosis in different stages. Among all of the reviewed AI methods, machine learning methods with 71% (n = 22) were the most commonly applied techniques. Many applications were in multi method forms (23%). Among the machine learning algorithms applications, support vector machine (21%) and naive Bayesian (19%) were the most commonly used methods. The most important variables that were used in the selected studies were body mass index, fasting blood sugar, blood pressure, HbA1c, triglycerides, low-density lipoprotein, high-density lipoprotein, and demographic variables. Conclusions It is recommended to select optimal algorithms by testing various techniques. Support vector machine and naive Bayesian might achieve better performance than other applications due to the type of variables and targets in diabetes-related outcomes classification.
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Affiliation(s)
- Shahabeddin Abhari
- Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Sharareh R Niakan Kalhori
- Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Ebrahimi
- Department of Internal Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hajar Hasannejadasl
- Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Garavand
- Department of Health Information Management and Technology, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Chauhan A, Pandey N, Desai A, Raithatha N, Patel P, Choxi Y, Kapadia R, Khandelwal R, Jain N. Association of TLR4 and TLR9 gene polymorphisms and haplotypes with cervicitis susceptibility. PLoS One 2019; 14:e0220330. [PMID: 31365550 PMCID: PMC6668796 DOI: 10.1371/journal.pone.0220330] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/12/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Cervicitis is one of the major health problems amongst women caused by infection of various pathogens including Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Trichomonas vaginalis (TV) as well as human papillomavirus (HPV), and persistent cervical inflammation is one of the etiologic agents of cervical cancer. Toll-like receptors (TLRs) play an important role in the recognition and subsequent elimination of these pathogens. Variations in the Toll-like receptor genes influence susceptibility to pathogens as well as disease progression independently. METHODS Ten single nucleotide polymorphisms, five each of TLR4 and TLR9 genes were analyzed among 130 cervicitis patients and 150 controls either using polymerase chain reaction-restriction fragment length polymorphism or allele specific-PCR. RESULTS T. vaginalis infection was found at the highest frequency (30.7%) as compared to C. trachomatis (1.5%), N. gonorrhoeae (2.3%) and HPV (4.6%) infections in cervicitis patients. TLR4 rs11536889 CC (age-adjusted OR, 2.469 [95% CI, 1.499 to 4.065]; p < 0.001) and TLR9 rs187084 TC (age-adjusted OR, 2.165 [95% CI, 1.267-3.699]; p = 0.005) genotypes showed the higher distribution in cervicitis patients compared to controls. In addition, TLR4 rs11536889 C allele was shown to increase the risk of cervicitis (age-adjusted OR, 1.632 [95% CI, 1.132 to 2.352]; p = 0.009) compared to controls. The TLR4 haplotype GCA (OR, 0.6 [95% CI, 0.38-0.95]; p = 0.0272) and TLR9 haplotype GTA (OR, 1.99 [95% CI, 1.14-3.48]; p = 0.014) were found to be associated with decreased and increased risk of cervicitis respectively. CONCLUSIONS TLR4 and TLR9 polymorphisms, as well as haplotypes were shown to modulate the cervicitis risk.
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Affiliation(s)
- Alex Chauhan
- P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), Changa, Anand, India
| | - Nilesh Pandey
- P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), Changa, Anand, India
| | - Ajesh Desai
- Department of Obstetrics and Gynaecology, GMERS Medical College and Hospital, Ahmedabad, India
| | - Nitin Raithatha
- Department of Obstetrics and Gynaecology, Pramukh Swami Medical College, Shree Krishna Hospital, Karamsad, India
| | - Purvi Patel
- Department of Obstetrics and Gynaecology, Sir Sayajirao General Hospital and Medical College Baroda, Vadodara, India
| | - Yesha Choxi
- Department of Obstetrics and Gynaecology, GMERS Medical College and Hospital, Ahmedabad, India
| | - Rutul Kapadia
- Department of Obstetrics and Gynaecology, GMERS Medical College and Hospital, Ahmedabad, India
| | - Ronak Khandelwal
- Department of Obstetrics and Gynaecology, Sir Sayajirao General Hospital and Medical College Baroda, Vadodara, India
| | - Neeraj Jain
- P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), Changa, Anand, India
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Semlali A, Al Mutairi M, Oqla Alanazi I, Awad Aljohi H, Reddy Parine N, Alhadheq A, Al-Jafari AA, Mobeirek AF, Al Amri A, Shaik JP, Filali FZ, Alanazi M. Toll-like receptor 4 polymorphisms in Saudi population with cardiovascular diseases. Mol Genet Genomic Med 2019; 7:e852. [PMID: 31328431 PMCID: PMC7650605 DOI: 10.1002/mgg3.852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/25/2019] [Accepted: 06/27/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Toll-like receptors play a substantial role in innate immunity and the effects of TLR4 genetic variants on cardiovascular diseases are still largely unknown. Therefore, we aimed to investigate the effects of TLR4 polymorphisms on cardiovascular diseases risk in the Saudi population. METHODS Three tag single-nucleotide polymorphisms (rs2770150, rs10759931, and rs4986790) in TLR4 were studied on 222 unrelated patients with cardiovascular diseases and 190 healthy volunteers. RESULTS We found that, in patients over 60 years old, the frequency of the TT genotype in rs2770150 and the variant allele G in rs10759931 were higher compared to the control group. Based on gender, the genotype frequency of rs2770150 increases the risk for cardiovascular diseases in female patients by 3.6-fold. The allele frequency for the G allele of rs10759931 increased the risk for CVDs in male patients by more than 1.5-fold. Furthermore, the genotype frequency of rs2770150 had a significant association with cardiovascular diseases in patients without hypertension and G allele of rs10759931 significantly increased the risk of cardiovascular diseases in patients that smoked. After Bonferroni correction only patients without hypertension showed significant risk of CVD with rs2770150. CONCLUSION A deeper understanding of the genetic variability of TLR4 will enable us to better identification of biomarkers for early detection and prognosis, and also enhance the decision-making process of treatments for cardiovascular diseases.
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Affiliation(s)
- Abdelhabib Semlali
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC, Canada.,Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mikhlid Al Mutairi
- Zoology Department, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ibrahim Oqla Alanazi
- National Center for Genomics Research (NCGR), King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Hasan Awad Aljohi
- National Center for Genomics Research (NCGR), King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Narasimha Reddy Parine
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Alhadheq
- Zoology Department, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdulaziz A Al-Jafari
- Department of Biochemistry, Faculty of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdulelah F Mobeirek
- Cardiac Sciences Department, Faculty of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Al Amri
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Jilani P Shaik
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | | | - Mohammad Alanazi
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
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Ling Y, Xiong F. Associations of TLR4 gene polymorphisms with the risk of age-related macular degeneration in a Chinese Han population. Medicine (Baltimore) 2019; 98:e15583. [PMID: 31083239 PMCID: PMC6531106 DOI: 10.1097/md.0000000000015583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The study was designed to reveal the relationship of toll-like receptor 4 (TLR4, rs1927914 and rs1927907) polymorphisms with risk of age-related macular degeneration (AMD), as well as the adjustment of this association by some environmental and lifestyle factors in Chinese Han population.TLR4 polymorphisms were genotyped by polymerase chain reaction-restricted fragment length polymorphisms and direct sequencing method in 138 AMD patients and 146 healthy controls. Genotype distribution in the control group was checked with Hardy-Weinberg equilibrium. Association of TLR4 polymorphisms and AMD risk was evaluated by χ test and adjusted by age and sex, smoking and drinking. Odds ratio (OR) with 95% confidence interval (95% CI) was used to represent the association strength. Logistic regressive analysis was used to calculate the adjusted OR values.CC genotype of rs1927914 had significantly lower frequency in AMD patients (P = .010), indicated a negative association with AMD risk (crude: OR = 0.358, 95% CI = 0.162-0.791; adjusted: OR = 0.355, 95% CI = 0.160-0.789). C allele of rs1927914 might decrease the susceptibility of AMD (crude: OR = 0.698, 95% CI = 0.497-0.982; adjusted: OR = 0.698, 95% CI = 0.495-0.984). No significant association has been discovered between TLR4 rs1927907 polymorphism and AMD susceptibility. Strong linkage disequilibrium existed between rs1927914 and rs1927907 polymorphisms. C-C haplotype was negatively associated with AMD risk (OR = 0.242, 95% CI = 0.121-0.485; OR = 0.242, 95% CI = 0.120-0.488).CC genotype and C allele of rs1927914 were significantly associated with the decreased AMD susceptibility.
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Whitney J, Haase B, Beatty J, Barrs VR. Breed-specific variations in the coding region of toll-like receptor 4 in the domestic cat. Vet Immunol Immunopathol 2019; 209:61-69. [PMID: 30885307 PMCID: PMC7126157 DOI: 10.1016/j.vetimm.2019.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/01/2019] [Accepted: 02/25/2019] [Indexed: 12/15/2022]
Abstract
Specific point mutations in the human toll-like receptor 4 (TLR4) confer altered risk for diverse diseases including sepsis, aspergillosis and inflammatory bowel disease. Some of these TLR4 polymorphisms are racially specific. We hypothesised that feline TLR4 polymorphisms might underlie an observed increased risk to infectious and inflammatory diseases in some cat breeds. The aim of this study was to identify breed-specific variations in the coding region of feline TLR4 and to model the effect of mutations on protein structure and function in silico. The entire coding region of TLR4 was sequenced in 8 groups (7 pure-bred, 1 crossbred) of domestic cats (Felis catus) comprising 158 individuals. Twenty-two single nucleotide polymorphisms (SNPs) were identified in TLR4, with 16 located in the coding region (11 non-synonymous) and four in the 3′UTR. Comparison of breed specific allelic frequencies indicated that Burmese and British shorthairs most commonly differed from other breeds. In silico analyses to predict the impact of the 11 non-synonymous variants indicated a deleterious effect on protein structure for one SNP (c.869 G > A), which was not associated with a specific breed. Overall, findings from this study do not support a role of TLR4 dysfunction in breed-predispositions to infectious diseases in domestic cats in Australia.
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Affiliation(s)
- J Whitney
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW 2006, Australia.
| | - B Haase
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW 2006, Australia.
| | - J Beatty
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW 2006, Australia; Marie Bashir Institute of Infectious Diseases and Biosecurity, University of Sydney, NSW 2006, Australia.
| | - V R Barrs
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW 2006, Australia; Marie Bashir Institute of Infectious Diseases and Biosecurity, University of Sydney, NSW 2006, Australia.
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Aioanei CS, Ilies RF, Bala C, Petrisor MF, Porojan MD, Popp RA, Catana A. THE ROLE OF ADIPONECTIN AND TOLL-LIKE RECEPTOR 4 GENE POLYMORPHISMS ON NON-PROLIFERATIVE RETINOPATHY IN TYPE 2 DIABETES MELLITUS PATIENTS. A CASE-CONTROL STUDY IN ROMANIAN CAUCASIANS PATIENTS. ACTA ENDOCRINOLOGICA-BUCHAREST 2019; -5:32-38. [PMID: 31149057 DOI: 10.4183/aeb.2019.32] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Context Persistent inflammation and impaired neovascularization are important contributors to the development of diabetic retinopathy (DR). Gene polymorphisms of adiponectin (APN) were demonstrated to have an important role on the plasma level and activity of adiponectin. APN has anti-inflammatory, anti-diabetic and anti-atherogenic properties. Toll-Like Receptor 4 (TLR4) is a critical mediator of innate immunity. Polymorphisms in TLR-4 gene were shown to be associated with impaired inflammatory response in diabetes. Objective The aim of the study was to analyze the association of +276G>T variant of APN gene and Asp299Gly and Thr399Ile of TLR-4 gene variants in relationship with T2DM and DR in an Eastern European population group. Design The distribution of the mutant alleles in 198 T2DM patients with DR and 200 non-T2DM controls was examined. Genomic DNA from T2DM patients and healthy controls genotyped through the use of PCR-RFPL assay. Results Genotype and allele frequencies of the Asp299Gly and Thr399Ile polymorphisms differed between T2DM patients and non diabetic subjects (P<0.001). Moreover, the presence of the minor alleles of these polymorphisms were significantly identified as protective factors against T2DM, under a dominant model of Fisher's exact test (χ2=4.988, phi=0.745, OR=0.767, 95% CI=0.602-0.867, P<0.001; respectively χ2=5.254, phi=0.820, OR=0.487, 95% CI=0.211-0.648, P<0.001). Genotype analysis for the adiponectin 276G>T gene polymorphism yielded no significant association with T2DM, but revealed a borderline significance for the association with DR (χ2=5.632, phi=0.423, OR =1.101, 95% CI=0.887-1.203, P=0.009). Conclusions We found an association between the TLR4 Asp299Gly and Thr399Ile polymorphisms and protection for DR. The APN genetic polymorphism is not associated with T2DM.
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Affiliation(s)
- C S Aioanei
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Molecular Sciences, Cluj-Napoca, Cluj, Romania
| | - R F Ilies
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Molecular Sciences, Cluj-Napoca, Cluj, Romania
| | - C Bala
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Diabetes and Nutrition, Cluj-Napoca, Cluj, Romania
| | - M F Petrisor
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Molecular Sciences, Cluj-Napoca, Cluj, Romania
| | - M D Porojan
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Internal Medicine, Cluj-Napoca, Cluj, Romania
| | - R A Popp
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Molecular Sciences, Cluj-Napoca, Cluj, Romania
| | - A Catana
- "Iuliu Hatieganu" University of Medicine and Pharmacy - Department of Molecular Sciences, Cluj-Napoca, Cluj, Romania
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Zhang J, Hu W, Diao Q, Wang Z, Miao J, Chen X, Xue Z. Therapeutic effect of the epidermal growth factor on diabetic foot ulcer and the underlying mechanisms. Exp Ther Med 2018; 17:1643-1648. [PMID: 30783432 PMCID: PMC6364187 DOI: 10.3892/etm.2018.7133] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 12/15/2017] [Indexed: 01/24/2023] Open
Abstract
The present study aimed to explore the therapeutic effect and underlying mechanism of epidermal growth factor (EGF) on the wound healing of diabetic foot ulcers (DFU). A total of 48 rabbits with DFU were randomly divided into 2 groups, comprising the treatment and control groups. Full-thickness skin (10×10 mm) was excised from the thigh of each rabbit. The wounds in the treatment group were treated with 100 mg/l EGF once a day for 1 month. The control group received no treatment. At 20 days following treatment, new granulation tissues that formed beyond the edge of the wound were collected for subsequent analysis. Tissues from rabbits in the treatment group produced a greater number of fibroblasts, which exhibited a fibroblastic morphology when compared with those in the control group. In the treatment group, a larger number of these fibroblasts were observed as clusters, and there were numerous blood vessels when compared with the control group. The fibroblasts in the control group exhibited an irregular morphology, contained fewer organelles and the surrounding collagenous fibers were sparse. These fibroblasts also demonstrated a disordered arrangement and it was revealed that the wound healed at a slower rate compared with the treatment group. Endogenous EGF mRNA detection revealed that there was a significant difference (P<0.05) in the relative gray value of EGF mRNA between the treatment (103.27±4.27) and control (63.88±4.36) groups. In conclusion, EGF may accelerate the healing of DFU, and exogenous EGF treatment may upregulate the expression of EGF mRNA in newly generated tissues.
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Affiliation(s)
- Juanzi Zhang
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Wenxian Hu
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Qixian Diao
- Department of General Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Zhaowei Wang
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Jin Miao
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Xiao Chen
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Zhijun Xue
- Department of Vascular Surgery, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
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Viswanathan V, Dhamodharan U, Srinivasan V, Rajaram R, Aravindhan V. Single nucleotide polymorphisms in cytokine/chemokine genes are associated with severe infection, ulcer grade and amputation in diabetic foot ulcer. Int J Biol Macromol 2018; 118:1995-2000. [PMID: 30009916 DOI: 10.1016/j.ijbiomac.2018.07.083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 06/29/2018] [Accepted: 07/12/2018] [Indexed: 12/15/2022]
Abstract
Compared to other complications the genetics of diabetic foot ulcer is poorly studied. The Interleukin (IL)-6 (-174G > C/rs1800795), Tumor Necrosis Factor (TNF)-α (-308G > A/rs1800629) and (-238G > A/rs361525) and Stromal cell Derived Factor (SDF)-1 (+801G > A/rs1801157) are well characterized single nucleotide polymorphisms (SNPs) which were previously shown to be associated with Diabetic Foot Ulcer (DFU). In the present study, we looked at the association of these SNPs with foot microbial infection, Wagner's ulcer grade and treatment procedure, along with serum levels of these cytokines (intermediate phenotype) and other serum biomarkers (adiponectin, leptin, CRP and HOMA-IR) in subjects with DFU. Subjects with DFU (n = 270) were genotyped by PCR-RFLP and the serum levels of IL-6, TNF-α and SDF-1 were determined by ELISA. Microbial infections were determined by standard microbiological methods. Ulcer grade and treatment procedures were recorded. IL-6 (-174G > C), TNF-α (-308G > A) and SDF-1 (+801G > A) SNPs were associated with severe microbial infections. TNF-α (-308G > A) and (-238G > A) SNPs were associated with severe ulcer grades. SDF-1 (+801G > A) SNP was associated with major amputation even after adjusting for confounding variables. Identification of these SNPs in DFU subjects would help in identifying high risk individuals who need better treatment care.
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Affiliation(s)
| | | | - Valarmathi Srinivasan
- Department of Epidemiology, Tamil Nadu Dr. M.G.R. Medical University, Chennai, India
| | - Rama Rajaram
- Department of Biochemistry, Central Leather Research Institute, Chennai, India
| | - Vivekanandhan Aravindhan
- Department of Genetics, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Chennai, India.
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Rigla M, García-Sáez G, Pons B, Hernando ME. Artificial Intelligence Methodologies and Their Application to Diabetes. J Diabetes Sci Technol 2018; 12:303-310. [PMID: 28539087 PMCID: PMC5851211 DOI: 10.1177/1932296817710475] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In the past decade diabetes management has been transformed by the addition of continuous glucose monitoring and insulin pump data. More recently, a wide variety of functions and physiologic variables, such as heart rate, hours of sleep, number of steps walked and movement, have been available through wristbands or watches. New data, hydration, geolocation, and barometric pressure, among others, will be incorporated in the future. All these parameters, when analyzed, can be helpful for patients and doctors' decision support. Similar new scenarios have appeared in most medical fields, in such a way that in recent years, there has been an increased interest in the development and application of the methods of artificial intelligence (AI) to decision support and knowledge acquisition. Multidisciplinary research teams integrated by computer engineers and doctors are more and more frequent, mirroring the need of cooperation in this new topic. AI, as a science, can be defined as the ability to make computers do things that would require intelligence if done by humans. Increasingly, diabetes-related journals have been incorporating publications focused on AI tools applied to diabetes. In summary, diabetes management scenarios have suffered a deep transformation that forces diabetologists to incorporate skills from new areas. This recently needed knowledge includes AI tools, which have become part of the diabetes health care. The aim of this article is to explain in an easy and plane way the most used AI methodologies to promote the implication of health care providers-doctors and nurses-in this field.
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Affiliation(s)
- Mercedes Rigla
- Endocrinology and Nutrition Department, Parc Tauli University Hospital, Sabadell, Spain
- Mercedes Rigla, MD, PhD, Endocrinology and Nutrition Department, Parc Tauli University Hospital, I3PT, Autonomous University of Barcelona, Parc Taulí, 1, Sabadell, 08208, Spain.
| | - Gema García-Sáez
- Bioengineering and Telemedicine Centre, Universidad Politécnica de Madrid, Spain
- CIBER-BBN: Networking Research Centre for Bioengineering, Biomaterials and Nanomedicine, Madrid, Spain
| | - Belén Pons
- Endocrinology and Nutrition Department, Parc Tauli University Hospital, Sabadell, Spain
| | - Maria Elena Hernando
- Bioengineering and Telemedicine Centre, Universidad Politécnica de Madrid, Spain
- CIBER-BBN: Networking Research Centre for Bioengineering, Biomaterials and Nanomedicine, Madrid, Spain
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27
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Anton Apreutesei N, Tircoveanu F, Cantemir A, Bogdanici C, Lisa C, Curteanu S, Chiseliţă D. Predictions of ocular changes caused by diabetes in glaucoma patients. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2018; 154:183-190. [PMID: 29249342 DOI: 10.1016/j.cmpb.2017.11.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 11/01/2017] [Accepted: 11/14/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND AND OBJECTIVE This paper builds different neural network models with simple topologies, having one or two hidden layers which were subsequently employed in the prediction of ocular changes progression in patients with diabetes associated with primer open-angle glaucoma. MATERIAL AND METHODS For attempting to indicate whether there is a relationship between glaucoma and diabetes, a simulation method, based on artificial neural networks (ANN), Jordan Elman networks (JEN) type, in particular, was applied in conjunction with clinical observation. The study was conducted on a sample of 101 eyes with open angle glaucoma included and, in each case, the patients had associated diabetes mellitus. A high degree of accuracy was exhibited by the models, demonstrating the potential effectiveness of this artificial intelligence technique for predicting ocular changes associated with diabetes. The parameters considered in this study for modelling purpose were: glaucoma age, diabetes age, C/D ratio (cup/disk size), glycated haemoglobin level (HbA1c), intraocular pressure (IOP), patient age, mean deviation (MD) and LENS appearance. RESULTS Relatively simple models, feed-forward neural networks with one or two intermediate layers, provided clinically meaningful data in direct modelling, the probability of correct answers being of 95%. Inverse modelling was also performed, in which MD depreciation was the output parameter. High accuracy was exhibited, in this case, with Jordan Elman networks, with the confidence interval of ±15%. CONCLUSIONS The neural models have demonstrated the possibility of their use in successfully predicting the relationship between glaucoma and diabetes in a real clinical environment.
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Affiliation(s)
- Nicoleta Anton Apreutesei
- University of Medicine and Farmacy "Gr. T. Popa" Iasi, Surgery Department, Romania; Ophthalmology Clinic, University Street No 16, Iasi 700115, Romania
| | - Filip Tircoveanu
- University of Medicine and Farmacy "Gr. T. Popa" Iasi, Surgery Department, Romania; Ophthalmology Clinic, University Street No 16, Iasi 700115, Romania
| | - Alina Cantemir
- University of Medicine and Farmacy "Gr. T. Popa" Iasi, Surgery Department, Romania; Ophthalmology Clinic, University Street No 16, Iasi 700115, Romania
| | - Camelia Bogdanici
- University of Medicine and Farmacy "Gr. T. Popa" Iasi, Surgery Department, Romania; Ophthalmology Clinic, University Street No 16, Iasi 700115, Romania
| | - Cătălin Lisa
- "Gheorghe Asachi" Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection "Cristofor Simionescu", Department of Chemical Engineering, Bd. Prof.dr.doc Dimitrie Mangeron No. 73, Iasi 700050, Romania.
| | - Silvia Curteanu
- "Gheorghe Asachi" Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection "Cristofor Simionescu", Department of Chemical Engineering, Bd. Prof.dr.doc Dimitrie Mangeron No. 73, Iasi 700050, Romania.
| | - Dorin Chiseliţă
- University of Medicine and Farmacy "Gr. T. Popa" Iasi, Surgery Department, Romania; Ophthalmology Clinic, University Street No 16, Iasi 700115, Romania
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28
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Sadati SM, Radfar M, Hamidi AK, Abdollahi M, Qorbani M, Esfahani EN, Amoli MM. Association Between the Polymorphism of Glu298Asp in Exon 7 of the eNOS Gene With Foot Ulcer and Oxidative Stress in Adult Patients With Type 2 Diabetes. Can J Diabetes 2017; 42:18-22. [PMID: 28499789 DOI: 10.1016/j.jcjd.2017.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/15/2017] [Accepted: 03/01/2017] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Diabetic foot ulcer (DFU) is a common and major manifestation in patients with diabetes. Oxidative stress (OS) plays an important role in diabetic complications, such as DFU. Nitric oxide deficiency contributes to the impairment of diabetic wound healing. The aim of this study was to examine the association between the eNOS Glu298Asp polymorphism and DFU and oxidative stress in patients with type 2 diabetes mellitus in an Iranian population. METHODS In this case-control study, 123 patients with type 2 diabetes and DFU and 134 patients without DFU were recruited. The genotypes of eNOS Glu298Asp polymorphism in exon 7 were determined by the polymerase chain reaction-restriction fragment length polymorphism analysis. We measured the levels of thiobarbituric reactive substances and ferric-reducing ability of plasma as the potential markers of OS. RESULTS There were significant differences in genotype frequencies of eNOS Glu298Asp polymorphism between case and control groups (GG+TG vs. TT; p=0.002; OR=0.22, 95% CI 0.83 to 0.62). Also, the frequency of the T allele in cases was less common than in controls (p=0.004). There was no significant difference in levels of OS parameters and various genotypes (p>0.05). CONCLUSIONS These results imply that the T allele might be protective against DFU.
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Affiliation(s)
- Seyedeh Maryam Sadati
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mania Radfar
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Endocriology and Metabolism Research Center, Edocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Armita Kakavand Hamidi
- Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Qorbani
- Noncommunicable Disease Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Ensieh Nasli Esfahani
- Diabetes Research Center, Endocrinology and Metabolism Clinical Science Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Zhou Z, Zeng C, Nie L, Huang S, Guo C, Xiao D, Han Y, Ye X, Ou M, Huang C, Ye X, Wen Z, Yang G, Jing C. The effects of TLR3, TRIF and TRAF3 SNPs and interactions with environmental factors on type 2 diabetes mellitus and vascular complications in a Han Chinese population. Gene 2017; 626:41-47. [PMID: 28479387 DOI: 10.1016/j.gene.2017.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/21/2017] [Accepted: 05/03/2017] [Indexed: 01/14/2023]
Abstract
Toll-like receptor 3 (TLR3) is involved in type I interferon-β (IFN-β) via TIR-domain-containing adapter-inducing interferon-β (TRIF) and Tumor necrosis factor receptor-associated factor 3 (TRAF3), culminating in inflammation and immunity reactions. TLR3 is implicated in insulin resistance and type 2 diabetes mellitus (T2DM). Eight SNPs of these genes were detected in 552 T2DM patients and 552 matched healthy control subjects. Gene-gene and gene-environment interactions and haplotype associations were also evaluated. We identified a 21% increased risk of T2DM for the T allele of rs12435483 in the TRAF3 gene (OR: 1.21; 95% CI: 1.01-1.44; P=0.036). The GA genotype and GA+AA genotype of TRAF3 rs12147254 were found to increase the risk of coronary heart disease (CHD) among T2DM patients (GA vs. GG: OR=4.17, 95% CI: 1.04-16.79, P=0.045; GA+AA vs. GG: OR=3.97, 95% CI: 1.02-15.48, P=0.047). However, the GACGAC haplotype in TRAF3 had a protective effect on T2DM micro-macrovascular complications (OR=0.33, 95% CI: 0.13-0.85, P=0.017). Two-factor (TRAF3 rs12435483 and LDL) and three-factor (TRAF3 rs12435483, BMI and HDL) interactions of the risk of T2DM were identified. In conclusion, the genetic variants in the TLR3-TRIF-TRAF3-INF-β signaling pathway and interactions with some particular environmental factors (LDL, BMI and HDL) may contribute to susceptibility to T2DM and vascular complications in the Han Chinese population.
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Affiliation(s)
- Zixing Zhou
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Chengli Zeng
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Lihong Nie
- Department of Endocrine, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Shiqi Huang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Congcong Guo
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Di Xiao
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Yajing Han
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Xiaohong Ye
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Meiling Ou
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Chuican Huang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Xingguang Ye
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Zihao Wen
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - Guang Yang
- Department of Parasitology, School of Medicine, Jinan University, Guangzhou, China; Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China.
| | - Chunxia Jing
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China; Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China.
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30
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Guo C, Zhang L, Nie L, Zhang N, Xiao D, Ye X, Ou M, Liu Y, Zhang B, Wang M, Lin H, Yang G, Jing C. Association of polymorphisms in the MyD88, IRAK4 and TRAF6 genes and susceptibility to type 2 diabetes mellitus and diabetic nephropathy in a southern Han Chinese population. Mol Cell Endocrinol 2016; 429:114-9. [PMID: 27062898 DOI: 10.1016/j.mce.2016.04.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 12/13/2022]
Abstract
Type 2 diabetes mellitus (T2DM) has been linked to a state of low-grade inflammation resulting from abnormalities in the innate immune pathway. MyD88 is an essential adaptor protein for TLR signaling, which is involved in activating NF-κB through IRAK4 and TRAF6. To investigate the effects of the MyD88, IRAK4 and TRAF6 polymorphisms in the susceptibility of T2DM and diabetic vascular complications, eight SNPs were analyzed in 553 T2DM patients and 553 matched healthy controls. Gene-gene interactions and haplotype associations were also evaluated. We found a significant increased risk of T2DM for the AG genotype of rs6853 in MyD88 gene and the CT genotype of rs4251532 in IRAK4 gene. Significant association was also found between rs16928973 in TRAF6 gene and diabetic nephropathy (DN) under the allelic model. Moreover, the TA haplotype in TRAF6 was negatively associated with DN. No significant gene-gene interactions were found. In conclusion, our results indicate that the polymorphisms in TLR-MyD88-NF-κB signaling pathway confer genetic susceptibility to T2DM and DN.
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Affiliation(s)
- Congcong Guo
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Liju Zhang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Lihong Nie
- Department of Endocrine, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China
| | - Na Zhang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Di Xiao
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Xingguang Ye
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Meiling Ou
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Yang Liu
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Baohuan Zhang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Man Wang
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Hansheng Lin
- Department of Medical Statistics, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Guang Yang
- Department of Parasitology, School of Medicine, Jinan University, Guangzhou 510632, China; Key Laboratory of Environmental Exposure and Health in Guangzhou, Jinan University, Guangzhou 510632, China.
| | - Chunxia Jing
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, 510632, China; Key Laboratory of Environmental Exposure and Health in Guangzhou, Jinan University, Guangzhou 510632, China.
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31
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Crompton R, Williams H, Ansell D, Campbell L, Holden K, Cruickshank S, Hardman MJ. Oestrogen promotes healing in a bacterial LPS model of delayed cutaneous wound repair. J Transl Med 2016; 96:439-49. [PMID: 26855364 DOI: 10.1038/labinvest.2015.160] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 12/04/2015] [Accepted: 12/11/2015] [Indexed: 12/21/2022] Open
Abstract
Wound infection is a major clinical problem, yet understanding of bacterial host interactions in the skin remains limited. Microbe-derived molecules, known as pathogen-associated molecular patterns, are recognised in barrier tissues by pattern-recognition receptors. In particular, the pathogen-associated molecular pattern, lipopolysaccharide (LPS), a component of microbial cell walls and a specific ligand for Toll-like receptor 4, has been widely used to mimic systemic and local infection across a range of tissues. Here we administered LPS derived from Klebsiella pneumoniae, a species of bacteria that is emerging as a wound-associated pathogen, to full-thickness cutaneous wounds in C57/BL6 mice. Early in healing, LPS-treated wounds displayed increased local apoptosis and reduced proliferation. Subsequent healing progression was delayed with reduced re-epithelialisation, increased proliferation, a heightened inflammatory response and perturbed wound matrix deposition. Our group and others have previously demonstrated the beneficial effects of 17β-estradiol treatment across a range of preclinical wound models. Here we asked whether oestrogen would effectively promote healing in our LPS bacterial infection model. Intriguingly, co-treatment with 17β-estradiol was able to promote re-epithelialisation, dampen inflammation and induce collagen deposition in our LPS-delayed healing model. Collectively, these studies validate K. pneumoniae-derived LPS treatment as a simple yet effective model of bacterial wound infection, while providing the first indication that oestrogen could promote cutaneous healing in the presence of infection, further strengthening the case for its therapeutic use.
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Affiliation(s)
- Rachel Crompton
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | - Helen Williams
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | - David Ansell
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK.,The Centre for Dermatology Research, Institute of Inflammation and Repair, The University of Manchester, Manchester, UK
| | - Laura Campbell
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | | | | | - Matthew J Hardman
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
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32
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Association between Toll-Like Receptor 4 and Occurrence of Type 2 Diabetes Mellitus Susceptible to Pulmonary Tuberculosis in Northeast China. Stem Cells Int 2016; 2016:8160318. [PMID: 27123010 PMCID: PMC4830731 DOI: 10.1155/2016/8160318] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/03/2016] [Accepted: 03/13/2016] [Indexed: 01/16/2023] Open
Abstract
The purpose of this study is to explore why type 2 diabetes mellitus (T2DM) patients are susceptible to pulmonary tuberculosis through detection of serum Toll-like receptor 4 (TLR4), an important immune-related receptor, especially in terms of content and TLR4 gene polymorphism. Patients with T2DM complicated by pulmonary tuberculosis (T2DMTB) were selected as the case group and T2DM patients without tuberculosis were selected as the control group. Forty patients in each group were randomly selected and their serum TLR4 levels were detected and compared. Determination of six sites of TLR4 gene polymorphism was carried out in 238 T2DMTB patients and 310 patients with T2DM, and results showed that the serum TLR4 content of the T2DMTB group was significantly lower than that of the T2DM group (p < 0.05). The six sites of TLR4 gene polymorphism did not show significant associations with T2DMTB risk. No statistically significant differences in genotype distributions were observed between T2DMTB patients and patients with T2DM when studied using the recessive and dominant genetic models. How two diseases with contradictory nutritional statuses can occur in the same person is difficult to explain from environmental factors perspective alone. Future research should study the causes of T2DMTB from the perspective of genetics.
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Singh K, Agrawal NK, Gupta SK, Sinha P, Singh K. Increased expression of TLR9 associated with pro-inflammatory S100A8 and IL-8 in diabetic wounds could lead to unresolved inflammation in type 2 diabetes mellitus (T2DM) cases with impaired wound healing. J Diabetes Complications 2016; 30:99-108. [PMID: 26525587 DOI: 10.1016/j.jdiacomp.2015.10.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/24/2015] [Accepted: 10/04/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is characterized by persistent hyperglycemia which causes a chain of abrupt biochemical and physiological changes. Immune dys-regulation is the hallmark of T2DM that could contribute to prolonged inflammation causing transformation of wounds into non-healing chronic ulcers. Toll like receptor -9 (TLR9) is a major receptor involved in innate immune regulation. TLR9 activation induces release of pro-inflammatory molecules like S100A8 and interleukin-8 (IL-8) by myeloid cells causing migration of myeloid cells to the site of inflammation. We hypothesized that pro-inflammatory S100A8 and IL-8 proteins could cause persistent inflammation in chronic wounds like diabetic foot ulcer (DFU) and may contribute to impaired wound healing in T2DM patients. MATERIALS AND METHODS Expression of TLR9 and its downstream effector molecules S100A8, and IL-8 were analyzed in chronic diabetic wound and non-diabetic control wound tissue samples by semiquantitative reverse transcriptase - polymerase chain reaction (RT-PCR), quantitative RT-PCR, western blot and immunofluorescence. CD11b(+)CD33(+) myeloid cells were analyzed by flow cytometry. RESULTS TLR9 message and protein were higher in diabetic wounds compared to control wounds (p=0.03, t=2.21 for TLR9 mRNA; p=<0.001, t=4.21 for TLR9 protein). TLR9 down-stream effector molecules S100A8 and IL-8 were also increased in diabetic wounds (p=0.003, t=3.1 for S100A8 mRNA; p=0.04, t=2.04 for IL-8). CD11b(+) CD33(+) myeloid cells were decreased in T2DM as compared to non-diabetic controls (p=0.001, t=3.6). DFU subjects had higher levels of CD11b(+) CD33(+) myeloid cells as compared to non-DFU T2DM control (p=0.003, t=2.8). Infection in the wound microenvironment could be the cause of increase in CD11b(+)CD33(+) myeloid cells in DFU (p=0.03, t=2.5). CONCLUSION The up-regulation of myeloid cell-derived pro-inflammatory molecules S100A8 and IL-8 in combination with lower levels of CD11b(+) CD33(+) myeloid cells may cause the impairment of wound healing in T2DM subjects leading to chronic ulcers.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Sanjeev K Gupta
- Department of Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Pratima Sinha
- Department of Biological Sciences, University of Maryland Baltimore County Baltimore, MD, USA.
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India.
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Chang WW, Zhang L, Jin YL, Yao YS. Toll-like receptor 4 gene Asp299Gly and Thr399Ile polymorphisms in type 2 diabetes mellitus: A meta-analysis of 15,059 subjects: Need for clarification of data in a recent meta-analysis. Diabetes Res Clin Pract 2015; 110:e31-2. [PMID: 26371398 DOI: 10.1016/j.diabres.2015.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 08/03/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Wei-Wei Chang
- School of Public Health, Wannan Medical College, 241002 Wuhu, Anhui, China
| | - Liu Zhang
- Department of Hospital Infection Management Office, Wuhu Hospital of Traditional Chinese Medicine, 241000 Wuhu, Anhui, China
| | - Yue-Long Jin
- School of Public Health, Wannan Medical College, 241002 Wuhu, Anhui, China
| | - Ying-Shui Yao
- School of Public Health, Wannan Medical College, 241002 Wuhu, Anhui, China.
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TLR2∆22 (-196-174) significantly increases the risk of breast cancer in females carrying proline allele at codon 72 of TP53 gene: a case-control study from four ethnic groups of North Eastern region of India. Tumour Biol 2015; 36:9995-10002. [PMID: 26188904 DOI: 10.1007/s13277-015-3795-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/10/2015] [Indexed: 12/13/2022] Open
Abstract
Breast cancer (BC) is the second most common cancer in women. In the North Eastern Region (NER) of India, BC is emerging as an important concern as evidenced by the data available from population and hospital-based cancer registries. Studies on genetic susceptibility to BC are important to understand the increase in the incidence of BC in NER. The present case control study was conducted to investigate the association between tumour suppressor gene TP53 codon 72 polymorphism and innate immune pathway gene TLR2∆22 (-196-174) polymorphism with BC in females of NER of India for the identification of novel biomarker of BC. Four hundred sixty-two histopathologically confirmed BC cases from four states of NER of India, and 770 healthy controls were included by organizing community surveys from the neighbourhood of cases. In our study, no significant association between TP53 codon 72 polymorphisms and the risk of BC was found. However, our study has shown that TP53 codon 72 polymorphism is an important effect modifier. In the present study it was found that females carrying 22 base-pair deletion in the promoter region of their TLR2 gene had two times (AOR= 2.18, 95 % CI 1.13-4.21, p=0.019 in dominant model; AOR= 2.17, 95 % CI 1.09-4.34, p=0.027 in co-dominant model) increased risk of BC whwn they also carry proline allele at codon 72 of their TP53 gene.
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Xu Y, Jiang Z, Huang J, Meng Q, Coh P, Tao L. The association between toll-like receptor 4 polymorphisms and diabetic retinopathy in Chinese patients with type 2 diabetes. Br J Ophthalmol 2015; 99:1301-5. [PMID: 25947554 DOI: 10.1136/bjophthalmol-2015-306677] [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: 01/23/2015] [Accepted: 04/20/2015] [Indexed: 01/17/2023]
Abstract
PURPOSE Diabetic retinopathy (DR) is one of the secondary microvascular complications of type 2 diabetes mellitus. Persistent inflammation and impaired neovascularisation may be important contributors to the development of DR. A recent study showed that toll-like receptor 4 (TLR4) polymorphisms were associated with DR. The present study was designed to determine whether single-nucleotide polymorphisms (SNPs) in the TLR4 gene were associated with DR in a Chinese Han population. MATERIALS AND METHODS Three SNPs (rs10759931, rs1927911 and rs1927914) in the TLR4 gene were chosen as candidate SNPs. Genomic DNA from type 2 diabetes patients and healthy controls were genotyped for the above-mentioned genetic variations through the use of PCR restriction fragment length polymorphism assay. Data were analysed by χ(2) analysis. RESULTS The results showed that the three analysed polymorphisms in the TLR4 gene were in Hardy-Weinberg equilibrium, both in the patients and in the controls. In the type 2 diabetes group, a significantly higher frequency of the C allele of rs1927914 was observed in patients with type 2 diabetes than that in controls. The result showed that the frequencies of the TT genotype and the T allele of rs1927914 were significantly decreased in patients with type 2 diabetes. Significantly increased frequencies of the CC genotype and the C allele of rs1927911 were observed in patients with type 2 diabetes. In the DR group, the C allele of rs1927914 was significantly increased in the DR group compared with that of the control. The frequencies of the CC genotype and the C allele of rs1927911 tended to be higher in patients with DR than in the healthy controls. However, no difference was found when the Bonferroni correction was applied. No difference was detected between patients and controls with regard to all haplotypes. CONCLUSIONS This study suggested that rs1927914 and rs1927911 were associated with type 2 diabetes mellitus and that rs1927914 was associated with susceptibility to DR in a Han Chinese population.
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Affiliation(s)
- Yuxin Xu
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Zhengxuan Jiang
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jinhai Huang
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qianli Meng
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Paul Coh
- Department of Ophthalmology, University of California San Francisco, San Francisco, California, USA
| | - Liming Tao
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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Singh K, Agrawal NK, Gupta SK, Mohan G, Chaturvedi S, Singh K. Decreased expression of heat shock proteins may lead to compromised wound healing in type 2 diabetes mellitus patients. J Diabetes Complications 2015; 29:578-88. [PMID: 25746357 DOI: 10.1016/j.jdiacomp.2015.01.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/09/2015] [Accepted: 01/11/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND Heat shock proteins (HSPs) are inducible stress proteins expressed in cells exposed to stress. HSPs promote wound healing by recruitment of dermal fibroblasts to the site of injury and bring about protein homeostasis. Diabetic wounds are hard to heal and inadequate HSPs may be important contributors in the etiology of diabetic foot ulcers (DFU). OBJECTIVE To analyze the differential expression of HSPs and their downstream molecules in human diabetic wounds compared to control wounds. METHODS Expressional levels of HSP27, HSP47 and HSP70 and their downstream molecules like TLR4, p38-MAPK were seen in biopsies from 101 human diabetic wounds compared to 8 control subjects without diabetes using RT-PCR, western blot and immunohistochemistry. RESULTS Our study suggested a significant down regulation of HSP70, HSP47 and HSP27 (p value=<0.001 for HSP70; p value=0.007 for HSP47; p value=0.007 for HSP27) in DFU along with their downstream molecules TLR4 and p38-MAPK (p value=0.006 for p38-MAPK; p value=0.02 for TLR4). HSP70 levels were significantly lower in male subjects and their levels increased significantly with the grades of wound on Wagner's scale. Infection status of the wounds was found to be significantly associated with the increased levels of HSP70 and HSP27 in infected diabetic wounds. CONCLUSIONS Our study demonstrates that the down regulation of HSPs in diabetic wounds is associated with wound healing impairment in T2DM subjects.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Sanjeev K Gupta
- Department of Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Gyanendra Mohan
- Indian Railway Cancer Institute and Research Centre, N.E.R., Varanasi, 221002, India
| | - Sunanda Chaturvedi
- Indian Railway Cancer Institute and Research Centre, N.E.R., Varanasi, 221002, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India.
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Zhao J, Han X, Xue L, Zhu K, Liu H, Xie A. Association of TLR4 gene polymorphisms with sporadic Parkinson's disease in a Han Chinese population. Neurol Sci 2015; 36:1659-65. [PMID: 25908385 DOI: 10.1007/s10072-015-2227-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 04/17/2015] [Indexed: 02/08/2023]
Abstract
Parkinson's disease (PD) is considered as a multifactorial disorder involving complex interactions between genetic and environmental factors, while previous studies point to a pivotal role of neuroinflammation in the pathophysiology of PD. As a member of pattern recognition receptors, TLR4 plays an important role in the immune response and inflammatory responses. Growing evidences suggest that mutation of TLR4 gene may be connected with the development of PD. The objective of this study was to evaluate whether genetic polymorphisms of the TLR4 gene are associated with PD susceptibility. We genotyped three single-nucleotide polymorphisms of the TLR4 gene (rs1927911, rs1927914 and rs10116253) by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) in unrelated 380 PD patients and 380 healthy-matched controls. Our study revealed that rs1927914 C allele carriers and C allele were probably related to a decreased risk of PD (p = 0.032 and p = 0.028, respectively) as well as male PD (p = 0.034) and early-onset PD (EOPD) (p = 0.023). In addition, there were significant differences in genotype and allele distribution in male PD patients and its healthy-matched control subgroup (p = 0.035 and p = 0.012, respectively). For rs1927911 and rs10116253 polymorphisms, genotype or allele frequencies did not differ between groups. Our data suggest that the TLR4 gene might contribute to the risk of developing PD in Han Chinese and rs1927914 polymorphism may be a protective factor for sporadic PD, male PD and EOPD.
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Affiliation(s)
- Jing Zhao
- Department of Neurology, Affiliated Hospital of Medical College, Qingdao University, No. 16 Jiangsu road, Qingdao, 266003, Shandong Province, People's Republic of China
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Yin YW, Wang Q, Sun QQ, Hu AM, Liu HL. Toll-like receptor 4 gene Asp299Gly and Thr399Ile polymorphisms in type 2 diabetes mellitus: a meta-analysis of 15,059 subjects. Diabetes Res Clin Pract 2015; 107:338-47. [PMID: 25648392 DOI: 10.1016/j.diabres.2015.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/03/2014] [Accepted: 01/14/2015] [Indexed: 12/18/2022]
Abstract
AIMS Toll-like receptor 4 (TLR4) gene Asp299Gly and Thr399Ile polymorphisms have been reported to be associated with susceptibility to type 2 diabetes mellitus (T2DM) with inconsistent results. In an effort to clarify earlier inconclusive results, a meta-analysis evaluating the precise associations between TLR4 gene Asp299Gly and Thr399Ile polymorphisms and T2DM risk was performed. METHODS We searched the PubMed, Embase, Web of Science, CBMdisc, CNKI, and Google Scholar until July 17, 2014. Additionally, hand searching of the references of identified articles were performed. Original observational studies dealing with the associations between TLR4 gene Asp299Gly and Thr399Ile polymorphisms and T2DM risk were selected. Heterogeneity and publication bias were determined and the meta-analysis was performed by Review Manager 5.1.4 and Stata 11.0. RESULTS Seventeen articles involving 25 studies were included in the final meta-analysis, covering a total of 5963 T2DM cases and 9096 controls. For TLR4 gene Asp299Gly polymorphism, 17 studies were combined showing no evidence for association between TLR4 gene Asp299Gly polymorphism and T2DM risk. For TLR4 gene Thr399Ile polymorphism, eight studies were combined. There was also lack of evidence for significant association between TLR4 gene Thr399Ile polymorphism and T2DM risk. In addition, the similar results were obtained in the sensitivity analyses. CONCLUSIONS The present meta-analysis indicates that TLR4 gene Asp299Gly and Thr399Ile polymorphisms are not associated with increased T2DM risk.
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Affiliation(s)
- Yan-Wei Yin
- Department of Emergency, Chinese PLA Air Force General Hospital, 30 Fucheng Road, Haidian District, Beijing 100142, China.
| | - Qi Wang
- Department of Emergency, Chinese PLA Air Force General Hospital, 30 Fucheng Road, Haidian District, Beijing 100142, China
| | - Qian-Qian Sun
- Jinsong Sanatorium of Beijing Air Force, Beijing 100021, China
| | - Ai-Min Hu
- Department of Emergency, Chinese PLA Air Force General Hospital, 30 Fucheng Road, Haidian District, Beijing 100142, China
| | - Hong-Li Liu
- Department of Emergency, Chinese PLA Air Force General Hospital, 30 Fucheng Road, Haidian District, Beijing 100142, China
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Singh K, Agrawal NK, Gupta SK, Mohan G, Chaturvedi S, Singh K. Genetic and epigenetic alterations in Toll like receptor 2 and wound healing impairment in type 2 diabetes patients. J Diabetes Complications 2015; 29:222-9. [PMID: 25541252 DOI: 10.1016/j.jdiacomp.2014.11.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 11/26/2014] [Accepted: 11/27/2014] [Indexed: 11/26/2022]
Abstract
AIM Persistent hyperglycemic microenvironment in type 2 diabetes mellitus (T2DM) leads to the development of secondary complications like wound healing impairment. Proper co-ordination of innate immune system plays an integral role in wound healing. Toll like receptors (TLRs) are prominent contributors for the induction of the innate immune and inflammation response. TLR2 is an important extracellular member in mammalian TLR family and has been shown to be a potent player in the wound healing mechanism. METHODS Expressional status of TLR2 was seen in wounds of T2DM cases with respect to the severity of wounds in 110 human lower extremity wounds. The methylation status of TLR2 promoter was also examined. RESULTS Although TLR2 transcripts were downregulated in T2DM wounds compared to control, their levels tend to increase with the severity of T2DM wounds. The methylation status of TLR2 gene promoter was not significantly different among different grades of wounds in T2DM subjects. The CpG sites investigated were totally or partially methylated in majority of DFU cases. CONCLUSION TLR2 down regulation in wounds of T2DM patients compared to non diabetic patients may lead to development of non healing chronic ulcers in them.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, India
| | - Sanjeev K Gupta
- Department of Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, India
| | - Gyanendra Mohan
- Indian Railway Cancer Hospital and Research Centre, N.E.R., Varanasi- 221002, India
| | - Sunanda Chaturvedi
- Indian Railway Cancer Hospital and Research Centre, N.E.R., Varanasi- 221002, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India.
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Singh K, Agrawal NK, Gupta SK, Mohan G, Chaturvedi S, Singh K. Increased expression of endosomal members of toll-like receptor family abrogates wound healing in patients with type 2 diabetes mellitus. Int Wound J 2015; 13:927-35. [PMID: 25586463 DOI: 10.1111/iwj.12411] [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: 09/02/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 12/13/2022] Open
Abstract
The inflammatory phase of wound healing cascade is an important determinant of the fate of the wound. Acute inflammation is necessary to initiate proper wound healing, while chronic inflammation abrogates wound healing. Different endosomal members of toll-like receptor (TLR) family initiate inflammatory signalling via a range of different inflammatory mediators such as interferons, internal tissue damaged-associated molecular patterns (DAMPs) and hyperactive effector T cells. Sustained signalling of TLR9 and TLR7 contributes to chronic inflammation by activating the plasmacytoid dendritic cells. Diabetic wounds are also characterised by sustained inflammatory phase. The objective of this study was to analyse the differential expression of endosomal TLRs in human diabetic wounds compared with control wounds. We analysed the differential expression of TLR7 and TLR9 both at transcriptional and translational levels in wounds of 84 patients with type 2 diabetes mellitus (T2DM) and 6 control subjects without diabetes using quantitative real-time polymerase chain reaction (RT-PCR), western blot and immunohistochemistry. TLR7 and TLR9 were significantly up-regulated in wounds of the patients with T2DM compared with the controls and were dependent on the infection status of the diabetic wounds, and wounds with microbial infection exhibited lower expression levels of endosomal TLRs. Altered endosomal TLR expression in T2DM subjects might be associated with wound healing impairment.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Sanjeev K Gupta
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Gyanendra Mohan
- Department of Pathology, Indian Railway Cancer Hospital and Research Center, N.E.R., Varanasi, 221002, India
| | - Sunanda Chaturvedi
- Department of Pathology, Indian Railway Cancer Hospital and Research Center, N.E.R., Varanasi, 221002, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India.
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Davis MLR, LeVan TD, Yu F, Sayles H, Sokolove J, Robinson W, Michaud K, Thiele GM, Mikuls TR. Associations of toll-like receptor (TLR)-4 single nucleotide polymorphisms and rheumatoid arthritis disease progression: an observational cohort study. Int Immunopharmacol 2015; 24:346-352. [PMID: 25573402 DOI: 10.1016/j.intimp.2014.12.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/15/2014] [Accepted: 12/22/2014] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To examine the associations of toll-like receptor (TLR)-4 single nucleotide polymorphisms (SNPs) with disease progression in rheumatoid arthritis (RA). METHODS A total of 1188 RA patients were genotyped for TLR4 SNPs (rs1927911, rs11536878, and rs4986790). Measures of disease activity were examined, including Disease Activity Score-28 (DAS28), Multidimensional Health Assessment Questionnaire (MD-HAQ), Clinical Disease Activity Index (CDAI), and Simplified Disease Activity Index (SDAI). Genetic associations with these longitudinal measures were examined using generalized estimating equations in both univariate and multivariate analyses. Analyses were then stratified by antigen specific anti-citrullinated peptide antibody (ACPA) status including antibody to citrullinated fibrinogen and citrullinated histone H2B. RESULTS Disease activity measures progressed less over time in the homozygous minor allele group of rs1927911 including DAS28 (p<0.001), CDAI (p=0.008), and MD-HAQ (p=0.015) in univariate analysis and DAS28, CDAI and SDAI in multivariate analysis. Disease activity progression among those homozygous for the minor allele tended to be lower in the groups with positive ACPA though major differences by autoantibody status were not identified. There were no associations of TLR4 rs11536878 and rs4986790 SNPs with RA disease activity progression. CONCLUSIONS In this population, TLR4 rs1927911 genotypes are associated with disease activity independent of other covariates.
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Affiliation(s)
- Marshall L R Davis
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Tricia D LeVan
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
| | - Fang Yu
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Harlan Sayles
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Jeremy Sokolove
- Stanford University School of Medicine CCSR, 269 Campus Drive, Stanford, CA 94305, USA.
| | - William Robinson
- Stanford University School of Medicine CCSR, 269 Campus Drive, Stanford, CA 94305, USA.
| | - Kaleb Michaud
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Geoffrey M Thiele
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
| | - Ted R Mikuls
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
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Wang L, Wang J, Fang J, Zhou H, Liu X, Su SB. High glucose induces and activates Toll-like receptor 4 in endothelial cells of diabetic retinopathy. Diabetol Metab Syndr 2015; 7:89. [PMID: 26468333 PMCID: PMC4604707 DOI: 10.1186/s13098-015-0086-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 10/06/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Hyperglycemia-induced inflammation causes the dysfunction of blood vessels, and Toll-like receptor 4 (TLR4) plays a key role in inflammation-induced angiogenesis. However, the impact of TLR4 on the pathogenesis of diabetic retinopathy (DR) is poorly understood. In this study, we examined the expression of TLR4 in retinal vascular endothelial cells of patients with DR and diabetic mice, and explored the role of TLR4 in mediating inflammatory responses by human microvascular endothelial cells (HMEC-1) under high-glucose condition. METHODS The expression of TLR4 in retinal vascular endothelial cells of patients with proliferative diabetic retinopathy and diabetic mice induced by streptozotocin was examined using immunofluorescence. HMEC-1 cells were cultured and the expression of TLR4, MyD88 and Interleukin-1β (IL-1β) was examined under high-glucose condition. Endothelial cells with TLR4 silencing and antagonist of TLR4 as well as endothelial cells from TLR4 deficient mice were used to study the effect of activated TLR4 on inflammation induced by high-glucose treatment. RESULTS We observed that TLR4 was detected in CD31-labled human retinal vascular endothelia and its expression was markedly increased in fibrovascular membranes from DR patients and in retinal vascular endothelial cells of diabetic mice. The expression of TLR4, MyD88 and IL-1β was enhanced by high glucose in cultured HMEC-1 and the expression of TLR4 and IL-1β was inhibited by TLR4 siRNA knock-down and TLR4 antagonist. The expression of IL-1β by endothelial cells from TLR4 deficient mice under high glucose condition was decreased. CONCLUSIONS Our results revealed that hyperglycemia induced overexpression and activation of TLR4 in endothelial cells. This effect may lead to inflammatory responses contribute to the pathogenesis of diabetic retinopathy.
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Affiliation(s)
- Lu Wang
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
- />Guangdong Province Hospital of Traditional Chinese Medicine, Guangzhou, 510120 China
| | - Jing Wang
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Jiazhu Fang
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Hongyan Zhou
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Xialin Liu
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Shao Bo Su
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
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Arik HO, Yalcin AD, Celik B, Seyman D, Tetik G, Gursoy B, Kose S, Gumuslu S. Evaluation of soluble CD200 levels in type 2 diabetic foot and nephropathic patients: association with disease activity. Med Sci Monit 2014; 20:1078-81. [PMID: 24964809 PMCID: PMC4085116 DOI: 10.12659/msm.890517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND CD200 (OX-2) is a novel immune-effective molecule, existing in a cell membrane-bound form, as well as in a soluble form in serum (s OX-2), which acts to regulate inflammatory and acquired immune responses. MATERIAL AND METHODS We planned this study to evaluate the sOX-2 levels of type 2 diabetic foot (group B), and compare it with that of healthy controls (group A). The patient group had the following values: DM period: 27.9±10.3 year [mean ±SD], HbA1c: 9.52±2.44% [mean ±SD]. RESULTS Blood samples for sCD200 measurement were always taken in the morning between 8 and 10 A.M.. The results were reported as means of duplicate measurements. Concentrations of sOX-2 in the serum samples were quantified using an ELISA kit. Serum hs-CRP levels were measured using an hs-CRP assay kit. The sOX-2 level in group B was 173.8±3.1 and in group A was 70.52±1.2 [p<0.0001). In subgroup analysis of T2DM-DFI patients, we noticed that sOX-2 levels were higher in WGS (Wagner grading system) I and II patients than in WGS III and IV patients. The HbA1c, BUN, creatinine, hs-CRP levels, and sedimentation rates were higher in the patient group (p<0.0001, p<0.001, p<0.001, p<0.005, and p<0.0001, respectively). CONCLUSIONS We suggest that there are vascular, immunologic, and neurologic components in DFI, whereas autoimmune diseases and inflammatory skin disorders have only an immunologic component. This is possibly evidence of a pro-inflammatory effect seen in DFI as a vascular complication.
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Affiliation(s)
- Hasan Onur Arik
- Orthopaedics and Traumatology Clinic, Yozgat State Hospital, Yozgat, Turkey
| | - Arzu Didem Yalcin
- Department of Internal Medicine, Allergy and Clinical Immunology Unit, Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Corresponding Author: Arzu Didem Yalcin, e-mail: and
| | - Betul Celik
- Department of Laboratory Medicine and Pathology, Mayo Clinic in Jacksonville, Jacksonville, FL, U.S.A
| | - Derya Seyman
- Department of Infectious Disease, Antalya Training and Reseach Hospital, Antalya, Turkey
| | - Gulsum Tetik
- Department of Plastic Surgery, Antalya Education and Research Hospital, Antalya, Turkey
| | - Bensu Gursoy
- Infection Disease Clinic, Tekirdag State Hospital, Tekirdag, Turkey
| | - Sukran Kose
- Department of Infection, Allergy and Clinical Immunology Unit, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Saadet Gumuslu
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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Singh K, Kant S, Singh VK, Agrawal NK, Gupta SK, Singh K. Toll-like receptor 4 polymorphisms and their haplotypes modulate the risk of developing diabetic retinopathy in type 2 diabetes patients. Mol Vis 2014; 20:704-13. [PMID: 24883015 PMCID: PMC4037533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 05/24/2014] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Persistent inflammation and impaired neovascularization in type 2 diabetes mellitus (T2DM) patients may lead to development of macro- and microvascular complications. Diabetic retinopathy (DR) is one of the secondary microvascular complications of T2DM. Improper activation of the innate immune system may be an important contributor in the pathophysiology of DR. Toll-like receptor 4 (TLR4) is an important mediator of innate immunity, and genetic alterations in TLR4 support inflammation in the hyperglycemic condition. The present work was designed to investigate whether the TLR4 single nucleotide polymorphisms (SNPs) rs4986790, rs4986791, rs10759931, rs1927911, and rs1927914 are associated with DR in a north Indian population. METHODS The study group of 698 individuals (128 DR, 250 T2DM, 320 controls) was genotyped by PCR-RFLP. Haplotype and linkage disequilibrium between SNPs were determined using Haploview software. RESULTS Combined risk genotypes of TLR4 SNPs rs10759931 (odds ratio [OR] 1.50, p = 0.05) and rs1927914 (OR 1.48, p = 0.05) were found to be significantly associated with pathogenesis of DR. A total of 14 haplotypes with frequency >1% were obtained using Haploview software. Haplotypes ACATC (37.5%) and ACATT (14.8%) were the two most common haplotypes obtained. CONCLUSIONS Results of the present case-control study that included 698 north Indian subjects suggested that TLR4 SNPs rs10759931 and rs1927914 modulate the risk of DR in T2DM cases. Association analysis using haplotypes showed none of the haplotypes were associated with either susceptibility or resistance to DR in a north Indian population.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
| | - Shri Kant
- Department of Ophthalmology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Vivek Kumar Singh
- Department of Mining Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| | - Neeraj K. Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Sanjeev K. Gupta
- Department of Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
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Singh K, Agrawal NK, Gupta SK, Mohan G, Chaturvedi S, Singh K. Differential Expression of Matrix Metalloproteinase-9 Gene in Wounds of Type 2 Diabetes Mellitus Cases With Susceptible -1562C>T Genotypes and Wound Severity. INT J LOW EXTR WOUND 2014; 13:94-102. [DOI: 10.1177/1534734614534980] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Coordinated extracellular matrix deposition is a prerequisite for proper wound healing which is mainly orchestrated by matrix metalloproteinases (MMPs). Diabetic wounds generally show compromised wound healing cascade and abnormal MMP9 concentration is one of the cause. Our group have recently shown that the polymorphism -1562 C>T in the promoter region of MMP9 gene is associated with pathogenesis of wound healing impairment in T2DM patients. In present study we have done expression profiling of MMP9 gene in the wound biopsy of DFU cases. Expression level of MMP9 mRNA was then compared with susceptible -1562 C>T genotypes (TT and CT) as well as with different grades of wounds. We also screened the promoter region of MMP9 gene to see the methylation state of CpGs present there. Our study suggests that levels of MMP9 mRNA increase significantly with the wound grades. Moreover, the MMP9 levels in diabetic wounds were also dependent on -1562 C>T polymorphism in the promoter region of MMP9. Diabetic wounds also showed a significant unmethylated status of MMP9 promoter compared to control wounds. In conclusion, The risk genotypes of -1562 C>T polymorphism along with lack of methylation of CpG sites in MMP9 gene promoter may result in altered expression of MMP9 in wounds of T2DM cases resulting into nonhealing chronic ulcers in them.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
| | - Neeraj K. Agrawal
- Department of Endocrinology and Metabolism, IMS, Banaras Hindu University, Varanasi, India
| | - Sanjeev K. Gupta
- Department of General Surgery, IMS, Banaras Hindu University, Varanasi, India
| | - Gyanendra Mohan
- Indian Railway Cancer Hospital and Research Centre, N.E.R., Varanasi, India
| | - Sunanda Chaturvedi
- Indian Railway Cancer Hospital and Research Centre, N.E.R., Varanasi, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
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Singh K, Singh VK, Agrawal NK, Gupta SK, Singh K. Genetic Alterations in Toll-Like Receptor 4 Signaling Pathway and Impairment of Wound Healing in Patients With Type 2 Diabetes. INT J LOW EXTR WOUND 2014; 13:162-163. [PMID: 24743748 DOI: 10.1177/1534734614529654] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
| | - Vivek Kumar Singh
- Department of Mining Engineering, Banaras Hindu University, Varanasi, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, IMS, Banaras Hindu University, Varanasi, India
| | - Sanjeev K Gupta
- Department of General Surgery, IMS, Banaras Hindu University, Varanasi, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
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Singh K, Agrawal NK, Gupta SK, Singh K. Association of variant rs7903146 (C/T) single nucleotide polymorphism of TCF7L2 gene with impairment in wound healing among north Indian type 2 diabetes population: a case-control study. INT J LOW EXTR WOUND 2013; 12:310-5. [PMID: 24214952 DOI: 10.1177/1534734613504435] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The variants of transcription factor 7-like 2 (TCF7L2) gene have been shown to be associated with type 2 diabetes mellitus (T2DM) and its several secondary complications. Here, we aimed to examine the possible role of one of the common variant of this gene, rs7903146 (C/T), with impairment of wound healing in cases with T2DM. A total of 750 individuals, including 322 patients with T2DM and 120 patients with diabetic foot ulcers (DFUs) and 308 controls, were analyzed for rs7903146 variant of the TCF7L2 gene. Genotyping was done by polymerase chain reaction-restriction fragment length polymorphism. For rs7903146 variant, TT genotype frequency in patients with DFU was 10.8% and in controls was 5.2%. Risk genotype (TT) frequencies showed statistically significant difference between the DFU patients versus non-DM control group (odds ratio = 2.44, P = .037, 95% confidence interval = 1.05-5.64) compared with nonrisk genotype (CC + CT). In the present study, a positive significant association between DFU and the TT genotype of rs7903146 (C/T) variant of TCF7L2 gene was found.
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Affiliation(s)
- Kanhaiya Singh
- 1Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, India
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