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Bertucci T, Kakarla S, Kim D, Dai G. Differentiating Human Pluripotent Stem Cells to Vascular Endothelial Cells for Regenerative Medicine, Tissue Engineering, and Disease Modeling. Methods Mol Biol 2022; 2375:1-12. [PMID: 34591294 DOI: 10.1007/978-1-0716-1708-3_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Vasculature plays a vital role in human biology as blood vessels transport nutrients and oxygen throughout the body. Endothelial cells (ECs), specifically, are key as they maintain barrier functions between the circulating blood and the surrounding tissues. ECs derived from human pluripotent stem cells (hPSCs) are utilized to study vascular development and disease mechanisms within in vitro models. Additionally, ECs derived from induced pluripotent stem cells (iPSCs) hold great promise for advancing personalized medicine, cell therapies, and tissue-engineered constructs by creating patient-specific cell populations. Here, we describe a xeno-free, serum-free differentiation protocol for deriving ECs from hPSCs. In brief, mesoderm progenitor cells are derived via WNT pathway activation. Following this, EC maturation is achieved with exogenous vascular endothelial growth factor A (VEGFA) and basic fibroblast growth factor 2 (bFGF2). We have characterized these cells as expressing mature EC markers and have illustrated their functionality in vitro.
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Affiliation(s)
| | - Shravani Kakarla
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | - Diana Kim
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | - Guohao Dai
- Department of Bioengineering, Northeastern University, Boston, MA, USA.
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Endothelin-1 RS5370 gene polymorphism in primary nephrotic syndrome: A case-control study. An Pediatr (Barc) 2021; 95:406-412. [PMID: 34895646 DOI: 10.1016/j.anpede.2020.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/15/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Primary nephrotic syndrome (NS) is a common glomerular disease in children. We assessed the genotypes and frequency of the rs5370 allelic variant of the EDN1 gene in children with primary NS. PATIENTS AND METHODS We conducted a case-control study in Mansoura University Children's Hospital, Egypt between December 2015 and January 2018. We recruited 50 patients with steroid-sensitive NS (SSNS) and 50 patients with steroid-resistant NS (SRNS) in addition to 100 healthy controls. The patients underwent clinical evaluations and tests including measurement of serum albumin, cholesterol, creatinine and urea levels and a 24-h urinary protein test. We used polymerase chain reaction methods to assess the genotypes of rs5370 variants of the EDN1 gene (GG, GT and TT) and alleles (T and G) in the groups under study. RESULTS The most frequent genotype of the EDN1 gene at the locus of interest in the control group was the GT genotype (88%; P=.001) while the GG genotype was more frequent in the NS group compared to the control group (P=.02). We did not find statistically significant differences between the NS and control groups in regard to the EDN1 rs5370 alleles (P=.69). The GG genotype was more frequent in the SSNS group compared to the SRNS and control groups (P=.03). When we compared allele frequencies between the control, SSNS and SRNS groups, we did not find significant differences (P=.89). The GT genotype was associated with normal blood pressure in children with NS (P=.007), while the GG genotype was associated with hypertension (P<.001). We did not find statistically significant differences in renal histopathology or serum cholesterol levels based on the genotype. CONCLUSIONS The GG genotype at the rs5370 locus of the EDN1 gene may be associated with an increased risk of primary NS and a better response to steroid therapy.
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Rizk H, Hammad A, El-Said A, Wahba Y. [Endothelin-1 rs5370 gene polymorphism in primary nephrotic syndrome: A case-control study]. An Pediatr (Barc) 2020; 95:S1695-4033(20)30473-2. [PMID: 33317978 DOI: 10.1016/j.anpedi.2020.04.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/03/2020] [Accepted: 04/15/2020] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Primary nephrotic syndrome (NS) is a common glomerular disease in children. We assessed the genotypes and frequency of the rs5370 allelic variant of the EDN1 gene in children with primary NS. PATIENTS AND METHODS We conducted a case-control study in Mansoura University Children's Hospital, Egypt, between December 2015 and January 2018. We recruited 50 patients with steroid-sensitive NS (SSNS) and 50 patients with steroid-resistant NS (SRNS) in addition to 100 healthy controls. The patients underwent clinical evaluations and tests including measurement of serum albumin, cholesterol, creatinine and urea levels and a 24-hour urinary protein test. We used polymerase chain reaction methods to assess the genotypes of rs5370 variants of the EDN1 gene (GG, GT and TT) and alleles (T and G) in the groups under study. RESULTS The most frequent genotype of the EDN1 gene at the locus of interest in the control group was the GT genotype (88%; P=.001) while the GG genotype was more frequent in the NS group compared to the control group (P=.02). We did not find statistically significant differences between the NS and control groups in regard to the EDN1 rs5370 alleles (P=.69). The GG genotype was more frequent in the SSNS group compared to the SRNS and control groups (P=.03). When we compared allele frequencies between the control, SSNS and SRNS groups, we did not find significant differences (P=.89). The GT genotype was associated with normal blood pressure in children with NS (P=.007), while the GG genotype was associated with hypertension (P<.001). We did not find statistically significant differences in renal histopathology or serum cholesterol levels based on the genotype. CONCLUSIONS The GG genotype at the rs5370 locus of the EDN1 gene may be associated with an increased risk of primary NS and a better response to steroid therapy.
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Affiliation(s)
- Hoda Rizk
- Departamento de Pediatría, Facultad de Medicina, Universidad de El Mansura, El Mansura, Egipto
| | - Ayman Hammad
- Departamento de Pediatría, Facultad de Medicina, Universidad de El Mansura, El Mansura, Egipto
| | - Afaf El-Said
- Sección de Bioquímica, Hospital Infantil Universitario de El Mansura, El Mansura, Egipto
| | - Yahya Wahba
- Departamento de Pediatría, Facultad de Medicina, Universidad de El Mansura, El Mansura, Egipto.
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Zhang W, Zhao W, Ge C, Li X, Yang X, Xiang Y, Sun Z. Genetic Relationship Between Endothelin-1 Gene Polymorphisms and Intracerebral Hemorrhage Among Chinese Han People. Med Sci Monit 2020; 26:e919110. [PMID: 32168316 PMCID: PMC7092658 DOI: 10.12659/msm.919110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background The goal of the present study was to determine whether endothelin-1 (EDN1) variants are associated with intracerebral hemorrhage (ICH) risk among Chinese Han people. Material/Methods The genotyping of EDN1 rs5370 and rs6458155 polymorphisms were conducted in 154 ICH patients and 168 healthy controls using polymerase chain reaction (PCR) and sequencing. Deviation for genotype frequencies in controls from Hardy-Weinberg equilibrium (HWE) was assessed. The genotype and allele distribution of EDN1 polymorphisms was checked via χ2 test between 2 groups. Strength of the association between EDN1 polymorphisms and ICH risk is presented by odds ratio (OR) and 95% confidence interval (95% CI). Results Genotype distribution for rs5370 and rs6458155 polymorphisms in the control group both conformed to HWE (P>0.05). Only CC genotype and C allele frequencies of rs6458155 between ICH patients and healthy individuals were significantly different (P=0.025; P=0.043), indicating rs64581255 is associated with increased ICH onset (OR=2.214, 95% CI=1.009–4.461; OR=1.389, 95% CI=1.010–1.910). When adjusted by confounding factors, the significant correlations still existed between 2 groups (P=0.028, adjusted OR=2.217, 95% CI=1.092–4.500; P=0.046, adjusted OR=1.386, 95% CI=1.005–1.910). Conclusions EDN1 rs6458155 polymorphism may be a risk factor of ICH among Chinese Han people.
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Affiliation(s)
- Wanzeng Zhang
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Wangmiao Zhao
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Chunyan Ge
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Xiaowei Li
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Xuehui Yang
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Yi Xiang
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
| | - Zhaosheng Sun
- Department of Neurosurgery, Harrison International Peace Hospital, Hengshui, Hebei, China (mainland)
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Nepal G, Ojha R, Dulal HP, Yadav BK. Association between Lys198Asn polymorphism of endothelin-1 gene and ischemic stroke: A meta-analysis. Brain Behav 2019; 9:e01424. [PMID: 31566901 PMCID: PMC6790320 DOI: 10.1002/brb3.1424] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 08/21/2019] [Accepted: 09/04/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Endothelin (ET)-1 is a potent vasoconstrictor peptide produced by endothelial cells and associated with vascular dysfunction and cardiovascular disease. Lys198Asn is a single-nucleotide polymorphism (SNP) of gene encoding ET-1 (EDN1). It is hypothesized that it might have a role in altering ET-1 and ultimately leading to vascular dysfunction and ischemic stroke. We therefore conducted a meta-analysis to investigate the association between Lys198Asn polymorphism of EDN1 gene and susceptibility of ischemic stroke. METHODS This meta-analysis was conducted according to the guidance of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. We searched PubMed, Google Scholar, Embase, Web of Science, J-STAGE, and China National Knowledge Infrastructure (CNKI) for relevant studies. The association between Lys198Asn polymorphism and ischemic stroke susceptibility was evaluated by calculating the pooled ORs and 95% CIs. RESULTS Our analysis included 1,291 cases and 2,513 controls. Meta-analysis established a significant association between Lys198Asn SNP of EDN1 gene and ischemic stroke when assuming either recessive model (OR: 1.30; 95% CI: 1.02-1.65; p = .03; I2 = 41%) or dominant model (OR: 1.48; 95% CI: 1.24-1.76; p < .001; I2 = 61%). There was no evidence of publication bias in either of the recessive model (Egger test: p = .23; Begg test: p = .85) or dominant model (Egger test: p = .79; Begg test: p = .85). A subgroup analysis based on subtypes of ischemic stroke showed that Lys198Asn SNP was only associated with large vessel infarction but not with lacunar infarction caused by small vessel disease. A subgroup analysis based on ethnicity revealed that the Lys198Asn polymorphism of the EDN1 gene was associated with ischemic stroke only in Caucasians. CONCLUSIONS The present meta-analysis suggests that Lys198Asn polymorphism of EDN1 gene is associated with an increased risk for ischemic stroke.
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Affiliation(s)
- Gaurav Nepal
- Maharajgunj Medical CampusTribhuvan University Institute of MedicineKathmanduNepal
| | - Rajeev Ojha
- Department of NeurologyMaharajgunj Medical CampusTribhuvan University Institute of MedicineKathmanduNepal
| | | | - Binod Kumar Yadav
- Department of BiochemistryMaharajgunj Medical CampusTribhuvan University Institute of MedicineKathmanduNepal
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Positive Association between EDN1 rs5370 (Lys198Asn) Polymorphism and Large Artery Stroke in a Ukrainian Population. DISEASE MARKERS 2018; 2018:1695782. [PMID: 29849817 PMCID: PMC5903200 DOI: 10.1155/2018/1695782] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 01/11/2018] [Accepted: 02/12/2018] [Indexed: 01/05/2023]
Abstract
There are a lot of convincing evidences about the involvement of endothelin pathway proteins in the pathogenesis of atherosclerosis and its fatal complications. In this study, the analysis of a possible association between EDN1 rs5370 and EDNRA rs5335 gene polymorphisms and the risk of large artery stroke (LAS) in a Ukrainian population was conducted. 200 LAS patients and 200 unrelated controls were enrolled in a case-control study. The polymerase chain reaction-restriction fragment length polymorphism method (PCR-RFLP) was used for SNP genotyping. Our results revealed that EDN1 rs5370 polymorphism was associated with LAS development both before and after adjustment for atherosclerosis risk factors (sex, age, body mass index, arterial hypertension, type 2 diabetes mellitus, and smoking). The risk for a LAS incident in rs5370-T allele carriers was 1.6 times higher (CI = 1.066–2.403; P = 0.020) than in subjects with the GG genotype. No link between EDNRA rs5335 and LAS risk in a Ukrainian population was found. The present study indicated that EDN1 rs5370, but not EDNRA rs5335, can be the strong genetic predictor for LAS development in a Ukrainian population.
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Zhang L, Sui R. Effect of SNP polymorphisms of EDN1, EDNRA, and EDNRB gene on ischemic stroke. Cell Biochem Biophys 2015; 70:233-9. [PMID: 24633486 DOI: 10.1007/s12013-014-9887-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The objective of this study is to investigate the association between SNP polymorphisms of endothelin-1 (EDN1) and endothelin receptor (EDNRA and EDNRB) gene and ischemic stroke (IS) in the Chinese Han population in northern. A case-control study was introduced. We genotyped eight SNPs (rs1800541, rs2070699, and rs5370 in EDN1 gene; rs1801708, rs5333, and rs5335 in EDNRA gene; and rs3818416 and rs5351 in EDNRB gene) and calculated their polymorphic distribution in control group, IS group, and the IS subgroups. In male population, EDN1 gene rs2070699 G allele increased the incidence risk to 1.78 times (P = 0.009; OR 1.78; 95 % CI 1.15-2.75) and the risk of morbidity of rs5370 T allele carrying increased to 1.49 times (P = 0.048; OR 1.49; 95 % CI 1.00-2.21). EDNRA gene mutation rs5335 homozygous CC morbidity risk was significantly lower (P = 0.016; OR 0.52; 95 % CI 0.31-0.88). In the female population, the mutant homozygous AA cancer risk was significantly higher than G allele carriers (P = 0.019; OR 2.65; 95 % CI 1.18-6.00) on EDNRA gene rs1801708. In EDN1 gene, T allele of rs5370 and G allele of rs2070699 may be IS incidence risk factors in Northern Han male population. A allele of rs1801708 in EDNRA gene can increase the risk of IS in Northern Han women population.
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Affiliation(s)
- Lei Zhang
- School of Nursing, Liaoning Medical College, Jinzhou, China
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Hainsworth AH, Oommen AT, Bridges LR. Endothelial cells and human cerebral small vessel disease. Brain Pathol 2015; 25:44-50. [PMID: 25521176 DOI: 10.1111/bpa.12224] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 12/11/2022] Open
Abstract
Brain endothelial cells have unique properties in terms of barrier function, local molecular signaling, regulation of local cerebral blood flow (CBF) and interactions with other members of the neurovascular unit. In cerebral small vessel disease (arteriolosclerosis; SVD), the endothelial cells in small arteries survive, even when mural pathology is advanced and myocytes are severely depleted. Here, we review aspects of altered endothelial functions that have been implicated in SVD: local CBF dysregulation, endothelial activation and blood-brain barrier (BBB) dysfunction. Reduced CBF is reported in the diffuse white matter lesions that are a neuroradiological signature of SVD. This may reflect an underlying deficit in local CBF regulation (possibly via the nitric oxide/cGMP signaling pathway). While many laboratories have observed an association of symptomatic SVD with serum markers of endothelial activation, it is apparent that the origin of these circulating markers need not be brain endothelium. Our own neuropathology studies did not confirm local endothelial activation in small vessels exhibiting SVD. Local BBB failure has been proposed as a cause of SVD and associated parenchymal lesions. Some groups find that computational analyses of magnetic resonance imaging (MRI) scans, following systemic injection of a gadolinium-based contrast agent, suggest that extravasation into brain parenchyma is heightened in people with SVD. Our recent histochemical studies of donated brain tissue, using immunolabeling for large plasma proteins [fibrinogen, immunoglobulin G (IgG)], do not support an association of SVD with recent plasma protein extravasation. It is possible that a trigger leakage episode, or a size-selective loosening of the BBB, participates in SVD pathology.
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Affiliation(s)
- Atticus H Hainsworth
- Molecular and Cellular Biology Research Centre, St Georges University of London, London, UK; Stroke and Dementia Research Centre, St Georges University of London, London, UK
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Zhang M, Zhu W, Yun W, Wang Q, Cheng M, Zhang Z, Liu X, Zhou X, Xu G. Correlation of matrix metalloproteinase-2 single nucleotide polymorphisms with the risk of small vessel disease (SVD). J Neurol Sci 2015; 356:61-4. [PMID: 26152827 DOI: 10.1016/j.jns.2015.04.056] [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: 10/26/2014] [Revised: 04/22/2015] [Accepted: 04/30/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Maladjustment of matrix metalloproteinases (MMPs) results in cerebral vasculature and blood-brain barrier dysfunction, which is associated with small vessel disease (SVD). This study was to aim at evaluating correlations between matrix metalloproteinase-2 and 9 single nucleotide polymorphisms and the risk of SVD. METHODS A total of 178 patients with SVD were enrolled into this study via Nanjing Stroke Registry Program (NSRP) from January 2010 to November 2011. SVD patients were further subtyped as isolated lacunar infarction (ILI, absent or with mild leukoaraiosis) and ischemic leukoaraiosis (ILA, with moderate or severe leukoaraiosis) according to the Fazekas scale. 100 age- and gender-matched individuals from outpatient medical examination were recruited as the control group. The genotypes of MMP-2-1306 T/C and MMP-9-1562 C/T were determined by the TaqMan method. RESULTS Of 178 SVD patients, 86 and 92 patients were classified as ILI and ILA, respectively. Comparison analysis between SVD patients and controls revealed a significant correlation between SVD and hypertension, as well as a prevalence of hypertension in ILA. Further genotype analysis showed that the frequency of MMP-2-1306 CC genotype was higher in ILA patients than in controls (P=0.009, χ(2) test; P=0.027, the multiple test with Bonferroni correction). Finally, logistic regression analysis with adjustment of age, sex and vascular risk factors showed that the MMP-2-1306 T/C polymorphism was an independent predictor for ILA (OR: 2.605; 95% confidence interval [CI], 1.067-6.364; P=0.036). CONCLUSION Our findings suggest that the MMP-2-1306 T/C polymorphism is a direct risk factor for ILA.
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Affiliation(s)
- Min Zhang
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China; Department of Neurology, Laboratory of Neurological Diseases, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Wusheng Zhu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China
| | - Wenwei Yun
- Department of Neurology, Laboratory of Neurological Diseases, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Qizhang Wang
- Department of Neurology, Shenzhen Shajing Hospital, The Affiliated of Guangzhou Medical University, Guangdong Province, China
| | - Maogang Cheng
- Department of Neurology, Yancheng City First People's Hospital, The Fourth Affiliated Hospital of Nantong University, Jiangsu Province, China
| | - Zhizhong Zhang
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China
| | - Xianju Zhou
- Department of Neurology, Laboratory of Neurological Diseases, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China.
| | - Gelin Xu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China.
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Chatsuriyawong S, Gozal D, Kheirandish-Gozal L, Bhattacharjee R, Khalyfa AA, Wang Y, Hakonarson H, Keating B, Sukhumsirichart W, Khalyfa A. Genetic variance in nitric oxide synthase and endothelin genes among children with and without endothelial dysfunction. J Transl Med 2013; 11:227. [PMID: 24063765 PMCID: PMC3849009 DOI: 10.1186/1479-5876-11-227] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/24/2013] [Indexed: 01/09/2023] Open
Abstract
Background The presence of endothelial dysfunction (ED) constitutes an early risk factor for cardiovascular disease (CVD) in children. Nitric oxide (NO) and endothelin (EDN) are generated in endothelial cells and are critical regulators of vascular function, with ED resulting from an imbalance between these two molecules. We hypothesized that genetic variants in NO synthase and EDN isoforms and its receptors (EDNRA and EDNRB) may account for a proportion of the risk for ED in developing children. Methods Consecutive children (ages 5–10 years) were prospectively recruited from the community. Time to peak post-occlusive reperfusion (Tmax) was considered as the indicator of either normal endothelial function (NEF; Tmax < 45 sec) or ED (Tmax ≥ 45 sec). Lipid profiles, high sensitivity C-reactive protein (hsCRP), fasting glucose and insulin were assayed using ELISA. Genomic DNA from peripheral blood was extracted and genotyped for NOS1 (209 SNPs), NOS2 (122 SNPs), NOS3 (50 SNPs), EDN1 (43 SNPs), EDN2 (48 SNPs), EDN3 (14 SNPs), EDNRA (27 SNPs), and EDNRB (23 SNPs) using a custom SNPs array. Linkage disequilibrium was analyzed using Haploview version 4.2 software. Results The relative frequencies of SNPs were evaluated in 122 children, 84 with NEF and 38 with ED. The frequencies of NOS1 (11 SNPs), and EDN1 (2 SNPs) were differentially distributed between NEF vs. ED, and no significant differences emerged for all other genes. Significant SNPs for NOS1 and EDN1 SNPs were further validated with RT-PCR. Conclusions Genetic variants in the NOS1 and EDN1 genes appear to account for important components of the variance in endothelial function, particularly when concurrent risk factors such as obesity exist. Thus, analysis of genotype-phenotype interactions in children at risk for ED will be critical for more accurate formulation of categorical CVD risk estimates.
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Affiliation(s)
- Siriporn Chatsuriyawong
- Department of Pediatrics, Comer Children's Hospital, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, 900 E, 57th Street, KCBD, 4112, Chicago 60637, IL, USA.
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Kim SJ, Moon GJ, Bang OY. Biomarkers for stroke. J Stroke 2013; 15:27-37. [PMID: 24324937 PMCID: PMC3779673 DOI: 10.5853/jos.2013.15.1.27] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 12/26/2012] [Accepted: 12/27/2012] [Indexed: 01/22/2023] Open
Abstract
Background Major stroke clinical trials have failed during the past decades. The failures suggest the presence of heterogeneity among stroke patients. Biomarkers refer to indicators found in the blood, other body fluids or tissues that predicts physiologic or disease states, increased disease risk, or pharmacologic responses to a therapeutic intervention. Stroke biomarkers could be used as a guiding tool for more effective personalized therapy. Main Contents Three aspects of stroke biomarkers are explored in detail. First, the possible role of biomarkers in patients with stroke is discussed. Second, the limitations of conventional biomarkers (especially protein biomarkers) in the area of stroke research are presented with the reasons. Lastly, various types of biomarkers including traditional and novel genetic, microvesicle, and metabolomics-associated biomarkers are introduced with their advantages and disadvantages. We especially focus on the importance of comprehensive approaches using a variety of stroke biomarkers. Conclusion Although biomarkers are not recommended in practice guidelines for use in the diagnosis or treatment of stroke, many efforts have been made to overcome the limitations of biomarkers. The studies reviewed herein suggest that comprehensive analysis of different types of stroke biomarkers will improve the understanding of individual pathophysiologies and further promote the development of screening tools for of high-risk patients, and predicting models of stroke outcome and rational stroke therapy tailored to the characteristics of each case.
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Affiliation(s)
- Suk Jae Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Gallek M, Alexander S, Crago E, Sherwood P, Horowitz M, Poloyac S, Conley Y. Endothelin-1 and endothelin receptor gene variants and their association with negative outcomes following aneurysmal subarachnoid hemorrhage. Biol Res Nurs 2012; 15:390-7. [PMID: 22997346 DOI: 10.1177/1099800412459674] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is a devastating disease that affects approximately 30,000 people a year in the United States. Delayed cerebral ischemia (DCI) and cerebral vasospasm (CV) are common complications after aSAH. In addition, aSAH patients have a high risk of poor long-term outcomes. Endothelin-1 (ET-1), a potent vasoconstrictor, or its two types of receptors, ET receptor A (ETA) and ET receptor B (ETB), may play a role in the pathogenesis of DCI and CV. Genetic variations within the ET-1, ETA, or ETB genes may also account for variance observed in the outcomes of aSAH patients. The purpose of this study was to describe the distribution of the Lys198Asn polymorphism, a known functional SNP in the ET-1 gene, and tagging SNPs of the ET-1, ETA, and ETB genes in individuals recovering from aSAH. This study also investigated the relationships among the ET polymorphisms, DCI, and global functional outcomes measured at 3 and 6 months after aSAH. Participants included individuals aged 18-75 years with a diagnosis of aSAH. There was a trend found between the variant allele of an ET-1 SNP (rs6912834) and angiographic vasospasm. There were also associations found between two ETB SNPs (rs9574124 and rs3027111) and poor outcomes as measured by the Glasgow Outcome scale at 3 months. These findings support the role of ET-1 and ETB in recovery following aSAH.
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Affiliation(s)
- Matthew Gallek
- 1University of Arizona, College of Nursing, Tucson, AZ, USA
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MacClellan LR, Howard TD, Cole JW, Stine OC, Giles WH, O'Connell JR, Wozniak MA, Stern BJ, Mitchell BD, Kittner SJ. Relation of candidate genes that encode for endothelial function to migraine and stroke: the Stroke Prevention in Young Women study. Stroke 2009; 40:e550-7. [PMID: 19661472 DOI: 10.1161/strokeaha.109.557462] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Migraine with aura is a risk factor for ischemic stroke, but the mechanism by which these disorders are associated remains unclear. Both disorders exhibit familial clustering, which may imply a genetic influence on migraine and stroke risk. Genes encoding for endothelial function are promising candidate genes for migraine and stroke susceptibility because of the importance of endothelial function in regulating vascular tone and cerebral blood flow. METHODS Using data from the Stroke Prevention in Young Women study, a population-based case-control study including 297 women aged 15 to 49 years with ischemic stroke and 422 women without stroke, we evaluated whether polymorphisms in genes regulating endothelial function, including endothelin-1 (EDN), endothelin receptor type B (EDNRB), and nitric oxide synthase-3 (NOS3), confer susceptibility to migraine and stroke. RESULTS EDN SNP rs1800542 and rs10478723 were associated with increased stroke susceptibility in whites (OR, 2.1; 95% CI, 1.1-4.2 and OR, 2.2; 95% CI, 1.1-4.4; P=0.02 and 0.02, respectively), as were EDNRB SNP rs4885493 and rs10507875, (OR, 1.7; 95% CI, 1.1-2.7 and OR, 2.4; 95% CI, 1.4-4.3; P=0.01 and 0.002, respectively). Only 1 of the tested SNP (NOS3 rs3918166) was associated with both migraine and stroke. CONCLUSIONS In our study population, variants in EDN and EDNRB were associated with stroke susceptibility in white but not in black women. We found no evidence that these genes mediate the association between migraine and stroke.
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Affiliation(s)
- Leah R MacClellan
- Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, Baltimore, MD 21201-1559, USA
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Yücel YH, Gupta N. Paying attention to the cerebrovascular system in glaucoma. Can J Ophthalmol 2008; 43:342-6. [DOI: 10.3129/i08-059] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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15
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Cerebral small vessel disease: genetic risk assessment for prevention and treatment. Mol Diagn Ther 2008; 12:145-56. [PMID: 18510378 DOI: 10.1007/bf03256279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Cerebrovascular disease is a major burden to individuals and their communities worldwide. Stroke is one of the leading causes of death and disability, and the prevention and treatment of stroke can be improved with a better understanding of its causation. Cerebral small vessel disease (SVD) is a subset of cerebrovascular disease, and has an equally large impact on an individual's quality of life. Although many risk factors are involved, we propose that genetics has a significant role in the pathogenesis of SVD through a complex interplay of environmental and multigenetic factors. Advances in molecular technology have enabled the human genome to be investigated both at a population and, more recently, an individual level. A better understanding of the molecular basis of SVD will enable the development of therapies to help in its prevention and treatment. This review assesses the molecular genetics underlying cerebral SVD.
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Abstract
Advances in the Genetic Basis of Ischemic StrokeAs one of the leading causes of death within both the developed and developing world, stroke is a world-wide problem. About 80% of strokes are ischemic. It is caused by multiple genetic factors, environmental factors, and interactions among these factors. There is a long list of candidate genes that have been studied for a possible association with ischemic stroke. Among the most widely investigated genes are those involved in haemostasis, inflammation, nitric oxide production, homocysteine and lipid metabolism, renin-angiotensin-aldosterone system. Combined link-age/association studies have demonstrated that genes encoding PDE4D and ALOX5AP confer risk for stroke. We review the studies of these genes which may have potential application on the early diagnosis, prevention and treatment ischemic stroke patients.
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Abstract
Cerebral small vessel disease results from ischaemia in the perforating arteries supplying the white matter and deep grey matter nuclei. It results in both focal lacunar infarction and more diffuse areas of chronic ischaemia (leukoaraiosis). Two subtypes may exist. One subtype (isolated lacunar infarction) is associated with single or a few larger lacunar infarcts without leukoaraiosis, and may result from microatheroma in the larger perforating arteries. The second subtype (ischaemic leukoaraiosis) results in multiple small lacunar infarcts with leukoaraiosis secondary to a diffuse arteriopathy affecting the smaller perforating arteries, usually occurring in the presence of hypertension. In this subtype, chronic hypoperfusion and impaired cerebral autoregulation have been reported. A number of lines of evidence support a pathogenic role of endothelial activation and dysfunction. Genetic predisposition has also been implicated. Associations with genes involved in endothelial function, including those regulating the renin-angiotensin system, endothelial nitric oxide and homocysteine levels, have been reported. However, not all results have been replicated and there are few robust replicable associations. Larger studies are required to determine definitively which associations represent important risk factors.
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Affiliation(s)
- Hugh S Markus
- Clinical Neuroscience, St George's, University of London, Cranmer Terrace, London SW17 ORE, UK.
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Rossi GP, Pitter G. Genetic variation in the endothelin system: do polymorphisms affect the therapeutic strategies? Ann N Y Acad Sci 2006; 1069:34-50. [PMID: 16855133 DOI: 10.1196/annals.1351.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Endothelin-1 (ET-1) exerts multiple biological effects, including vasoconstriction and the stimulation of cell proliferation in tissues both within and outside of the cardiovascular system. ET-1 is synthesized by ET-converting enzymes (ECE), chymases (CMAs), and non-ECE metalloproteases through a process regulated in an autocrine fashion in vascular and nonvascular cells. ET-1 acts through the activation of G(i)protein-coupled receptors. ET(A) receptors mediate vasoconstriction and cell proliferation, whereas ET(B) receptors are important for aldosterone secretion, endothelial cell (EC) migration, the release of nitric oxide (NO) and prostacyclin, the clearance of ET-1, and the inhibition of ECE-1. ET is activated in scleroderma, hypertension, atherosclerosis, restenosis, heart failure, idiopathic cardiomyopathy, and renal failure. Tissue concentrations more reliably reflect the activation of the ET system because of the predominantly abluminal secretion of the peptide. Experimental studies and clinical trials have demonstrated that ET-1 plays a major role in normal cardiovascular homeostasis and in the functional and structural changes observed in arterial and pulmonary hypertension, glomerulosclerosis, atherosclerosis, and heart failure. Accordingly, ET antagonists are promising new agents in the treatment of cardiovascular diseases. Single nucleotide polymorphisms (SNPs) of the genes of preproET-1, ECE-1, CMA, ET(A) and ET(B) receptors have been identified and can be important for their functional regulation. However, for most of them the association with disease conditions and the evidence for a functional role remain controversial. Thus, even though ET antagonists are being used for the treatment of pulmonary hypertension, there is no convincing evidence for a role of SNPs in affecting the therapeutic strategies.
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Affiliation(s)
- Gian Paolo Rossi
- Department of Clinical and Experimental Medicine, Clinica Medica 4, University of Padova, Padova, Italy.
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