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Lopes MMDC, Rojas HA, Polizzi LF, Magalhães KCS, Sandrim VC, Dellaretti M, Rubatino FVM, Simões RT. Analysis of the associations of the T-786C and Glu298Asp polymorphisms of the eNOS gene as risk factors in the rupture of intracranial aneurysms. Meta Gene 2022. [DOI: 10.1016/j.mgene.2021.101003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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A multicenter case-control study of the effect of e-nos VNTR polymorphism on upper gastrointestinal hemorrhage in NSAID users. Sci Rep 2021; 11:19923. [PMID: 34620931 PMCID: PMC8497469 DOI: 10.1038/s41598-021-99402-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/23/2021] [Indexed: 01/03/2023] Open
Abstract
Bleeding in non-steroidal anti-inflammatory drug (NSAID) users limited their prescription. This first multicenter full case–control study (325 cases and 744 controls), explored the association of e-NOS intron 4 variable number tandem repeat (VNTR) polymorphism with upper gastrointestinal hemorrhage (UGIH) in NSAID exposed and unexposed populations and assessed any interaction between this polymorphism and NSAIDs. NSAID users carrying e-NOS intron 4 wild type genotype or VNTR polymorphism have higher odds of UGIH than those unexposed to NSAIDs [Odds Ratio (OR): 6.62 (95% Confidence Interval (CI): 4.24, 10.36) and OR: 5.41 (95% CI 2.62, 11.51), respectively], with no effect modification from VNTR polymorphism-NSAIDs interaction [Relative Excess Risk due to Interaction (RERI): −1.35 (95% CI −5.73, 3.03); Synergism Index (S): 0.77 (95% CI 0.31, 1.94)]. Similar findings were obtained for aspirin exposure. Non-aspirin NSAID users who carry e-NOS intron 4 VNTR polymorphism have lower odds of UGIH [OR: 4.02 (95% CI 1.85, 8.75) than those users with wild type genotype [OR: 6.52 (95% CI 4.09, 10.38)]; though the interaction estimates are not statistically significant [RERI: −2.68 (95% CI −6.67, 1.31); S: 0.53 (95% CI 0.18, 1.55)]. This exploratory study suggests that the odds of UGIH in NSAID or aspirin users does not modify according to patient´s e-NOS intron 4 genotype.
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Tekkeşin F, Yurdakok M, Gumus E, Babaoglu MO, Bozkurt A, Caliskan Kadayifcilar S, Eldem MB, Korkmaz A, Yigit S, Tekinalp G. Endothelial nitric oxide synthase G894T, intron 4 VNTR, and T786C polymorphisms in retinopathy of prematurity. J Neonatal Perinatal Med 2021; 15:249-255. [PMID: 34542035 DOI: 10.3233/npm-210801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Our objective in this study was to assess the association between eNOS gene, that achieves synthesis of nitric oxide especially in the endothelial cells known to have an important role in angiogenesis and vasculogenesis, G894T, intron 4 VNTR (27-bp repeat) and T786C functional polymorphisms and retinopathy of prematurity (ROP), which is an important cause of morbidity in premature or low birth weight babies. METHODS A total of 139 babies who were followed up in our neonatal intensive care unit because of premature birth in our hospital or admitted to our unit. 69 of them had retinopathy of prematurity and comprised the patients group. The remaining 70 babies who did not have ROP comprised the control group. An additional of 1 ml of blood samples were drawn from babies who were in the study groups during routine laboratory analysis. eNOS gene polymorphisms were determined by using polymerase chain reaction method. RESULTS eNOS G894T, intron 4 VNTR and T786C gene polymorphisms did not differ between the patient and control groups (p > 0.05). Using logistic regression analysis; while gender did not differ between two groups; gestational age, birth weight, time on mechanical ventilation differ between two groups. After adjustment for variables other than eNOS gene polymorphisms, we found no significant difference in the genotype distribution of eNOS G894T, intron 4 VNTR and T786C polymorphisms (p > 0.05). CONCLUSION We observed no association between ROP and eNOS gene polymorphisms but needs more investigation.
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Affiliation(s)
- F Tekkeşin
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Pediatrics, Ankara, Turkey
| | - M Yurdakok
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Neonatology, Ankara, Turkey
| | - E Gumus
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Pediatrics, Ankara, Turkey
| | - M O Babaoglu
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Pharmacology, Ankara, Turkey
| | - A Bozkurt
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Pharmacology, Ankara, Turkey
| | - S Caliskan Kadayifcilar
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Ophthalmology, Ankara, Turkey
| | - M B Eldem
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Ophthalmology, Ankara, Turkey
| | - A Korkmaz
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Neonatology, Ankara, Turkey
| | - S Yigit
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Neonatology, Ankara, Turkey
| | - G Tekinalp
- Hacettepe University, Faculty of Medicine, Ihsan Dogramaci Children's Hospital, Department of Neonatology, Ankara, Turkey
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Cotta Filho CK, Oliveira-Paula GH, Rondon Pereira VC, Lacchini R. Clinically relevant endothelial nitric oxide synthase polymorphisms and their impact on drug response. Expert Opin Drug Metab Toxicol 2020; 16:927-951. [DOI: 10.1080/17425255.2020.1804857] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | | | | | - Riccardo Lacchini
- Department of Psychiatric Nursing and Human Sciences, University of Sao Paulo, Ribeirao Preto, Brazil
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Crucitta S, Restante G, Del Re M, Bertolini I, Bona E, Rofi E, Fontanelli L, Gianfilippo G, Fogli S, Stasi I, Ghilli M, Fontana A, Danesi R. Endothelial nitric oxide synthase c.-813C>T predicts for proteinuria in metastatic breast cancer patients treated with bevacizumab-based chemotherapy. Cancer Chemother Pharmacol 2019; 84:1219-1227. [PMID: 31529205 DOI: 10.1007/s00280-019-03933-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/21/2019] [Indexed: 02/03/2023]
Abstract
PURPOSE To investigate the association between single nucleotide polymorphisms (SNPs) in endothelial nitric oxide synthase (eNOS) and interleukin-8 (IL-8) genes and risk of developing bevacizumab-related adverse events in metastatic breast cancer (mBC) patients. PATIENTS AND METHODS mBC patients candidate to receive bevacizumab-based chemotherapy were enrolled in this pharmacogenetic study. eNOS c.-813C>T and c.894G>T, and IL-8 c.-251A>T were analyzed by real time PCR on genomic DNA extracted from peripheral blood. Univariate analysis was performed to test the association between each SNP and treatment-related toxicities. RESULTS Seventy-six mBC patients were enrolled in the present study. Patients carrying the homozygous variant eNOS c.-813TT genotype showed a statistically significant occurrence of any grade proteinuria when compared to CT or CC genotypes (p = 0.004). No significant association of proteinuria with IL-8 SNP or hypertension with selected eNOS and IL-8 SNPs was found. CONCLUSIONS These findings suggest an association between the eNOS c.-813C>T polymorphism and the development of proteinuria in mBC patients receiving a bevacizumab-based chemotherapy.
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Affiliation(s)
- Stefania Crucitta
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Giuliana Restante
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Marzia Del Re
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy.
| | - Ilaria Bertolini
- Unit of Medical Oncology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Eleonora Bona
- Unit of Medical Oncology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Eleonora Rofi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Lorenzo Fontanelli
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Giulia Gianfilippo
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Stefano Fogli
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
| | - Irene Stasi
- Unit of Medical Oncology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Matteo Ghilli
- Unit of Breast Surgery, Breast Cancer Centre, University Hospital of Pisa, Pisa, Italy
| | - Andrea Fontana
- Unit of Medical Oncology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Romano Danesi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 55, Via Roma, 56126, Pisa, Italy
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Cozma A, Fodor A, Orasan OH, Vulturar R, Samplelean D, Negrean V, Muresan C, Suharoschi R, Sitar-Taut A. Pharmacogenetic Implications of eNOS Polymorphisms ( Glu298Asp, T786C, 4b/4a) in Cardiovascular Drug Therapy. In Vivo 2019; 33:1051-1058. [PMID: 31280192 PMCID: PMC6689342 DOI: 10.21873/invivo.11573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/09/2019] [Accepted: 06/19/2019] [Indexed: 12/17/2022]
Abstract
Endothelial nitric oxide synthase (NOS3 or eNOS) is the enzyme responsible for the highest production of nitric oxide, with the greatest impact on the cardiovascular system, encoded by the eNOS gene, which presents various polymorphisms. ENOS gene polymorphisms play an important role in the response to drugs affecting nitric oxide (NO) signaling. This review discusses the pharmacogenetic impact of eNOS polymorphisms on the response to drugs affecting NO activity: angiotensin converting enzyme inhibitors, angiotensin II receptor antagonists, calcium blockers, beta-blockers, diuretics, phosphodiesterase inhibitors, and statins. The identification of biomarkers that accurately predict particular phenotypes is a challenge that needs additional large studies, in different populations. Efforts should be oriented towards a more accurate evaluation of the effects of eNOS genetic variants on biochemical parameters reflecting eNOS gene expression and enzymatic activity, in different diseases, as well as following drug treatment. This approach will allow for a better understanding of the role of eNOS genetic variants in cardiovascular disease progression and for cardiovascular drug therapy optimization.
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Affiliation(s)
- Angela Cozma
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- 4th Internal Medicine Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Adriana Fodor
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- Clinical Center of Diabetes, Nutrition and Metabolic Disease, Cluj-Napoca, Romania
| | - Olga Hilda Orasan
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- 4th Internal Medicine Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Romana Vulturar
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- Department of Cell Biology, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Dorel Samplelean
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- 4th Internal Medicine Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Vasile Negrean
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- 4th Internal Medicine Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Crina Muresan
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Faculty of Food Science &Technology, Cluj-Napoca, Romania
| | - Ramona Suharoschi
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Faculty of Food Science &Technology, Cluj-Napoca, Romania
| | - Adela Sitar-Taut
- University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
- 4th Internal Medicine Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Cluj-Napoca, Romania
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Katkam SK, Indumathi B, Tasneem FS, Rajasekhar L, Kutala VK. Impact of eNOS 27-bp VNTR (4b/a) gene polymorphism with the risk of Systemic Lupus Erythematosus in south Indian subjects. Gene 2018. [DOI: 10.1016/j.gene.2018.03.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hasan SU, Potenziano J, Konduri GG, Perez JA, Van Meurs KP, Walker MW, Yoder BA. Effect of Inhaled Nitric Oxide on Survival Without Bronchopulmonary Dysplasia in Preterm Infants: A Randomized Clinical Trial. JAMA Pediatr 2017; 171:1081-1089. [PMID: 28973344 PMCID: PMC5710365 DOI: 10.1001/jamapediatrics.2017.2618] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
IMPORTANCE Bronchopulmonary dysplasia (BPD) occurs in approximately 40% of infants born at younger than 30 weeks' gestation and is associated with adverse pulmonary and neurodevelopmental outcomes. OBJECTIVE To test whether administration of inhaled nitric oxide to preterm infants requiring positive pressure respiratory support on postnatal days 5 to 14 improves the rate of survival without BPD. DESIGN, SETTING, AND PARTICIPANTS This intent-to-treat study was a randomized clinical trial performed at 33 US and Canadian neonatal intensive care units. Participants included 451 neonates younger than 30 weeks' gestation with birth weight less than 1250 g receiving mechanical ventilation or positive pressure respiratory support on postnatal days 5 to 14. Enrollment spanned from December 23, 2009, to April 23, 2012, and neurodevelopmental outcome studies were completed by April 4, 2014. INTERVENTIONS Placebo (nitrogen) or inhaled nitric oxide initiated at 20 ppm was decreased to 10 ppm between 72 and 96 hours after starting treatment and then to 5 ppm on day 10 or 11. Infants remained on the 5-ppm dose until completion of therapy (24 days). MAIN OUTCOMES AND MEASURES The primary outcome was the rate of survival without BPD at 36 weeks' postmenstrual age (PMA). Secondary outcomes included BPD severity, postnatal corticosteroid use, respiratory support, survival, and neurodevelopmental outcomes at 18 to 24 months' PMA. RESULTS In total, 222 infants (52.3% male [n = 116]) received placebo, and 229 infants (50.2% male [n = 115]) received inhaled nitric oxide. Their mean (SD) gestation was 25.6 (1.5) vs 25.6 (1.4) weeks, and their mean (SD) birth weight was 750 (164) vs 724 (160) g. Survival without BPD at 36 weeks' PMA was similar between the placebo and inhaled nitric oxide groups (31.5% [n = 70] vs 34.9% [n = 80]) (odds ratio, 1.17; 95% CI, 0.79-1.73). Rates for severe BPD (26.6% [55 of 207] vs 20.5% [43 of 210]) and postnatal corticosteroid use for BPD (41.0% [91 of 222] vs 41.5% [95 of 229]) and the mean (SD) days of positive pressure respiratory support (55 [40] vs 54 [42]), oxygen therapy (88 [41] vs 91 [59]), and hospitalization (105 [37] vs 108 [54]) were equivalent between the 2 groups. No differences in the incidence of common morbidities were observed. Respiratory outcomes on discharge to home, at 1 year, and at age 18 to 24 months' PMA and neurodevelopmental assessments at 18 to 24 months' PMA did not differ between groups. CONCLUSIONS AND RELEVANCE Inhaled nitric oxide, initiated at 20 ppm on postnatal days 5 to 14 to high-risk preterm infants and continued for 24 days, appears to be safe but did not improve survival without BPD at 36 weeks' PMA or respiratory and neurodevelopmental outcomes at 18 to 24 months' PMA. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00931632.
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Affiliation(s)
- Shabih U. Hasan
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Alberta Children’s Hospital Research Institute, Calgary, Alberta, Canada
| | | | | | - Jose A. Perez
- Department of Neonatology, Winnie Palmer Hospital, Pediatrix Medical Group, Orlando, Florida
| | - Krisa P. Van Meurs
- Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California,Lucile Packard Children’s Hospital Stanford, Palo Alto, California
| | - M. Whit Walker
- Division of Neonatology, Department of Pediatrics, University of South Carolina School of Medicine, Greenville
| | - Bradley A. Yoder
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
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Yao Y, Fang Z, Yang S, Zhao H, Chen Y, Jin Y, Zhao X, Zhu L, Tian Y, Shen C. Evaluation of genetic effect of NOS3 and G×E interaction on the variability of serum bilirubin in a Han Chinese population. Nitric Oxide 2017; 70:25-30. [PMID: 28797660 DOI: 10.1016/j.niox.2017.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 07/25/2017] [Accepted: 08/05/2017] [Indexed: 11/28/2022]
Abstract
Bilirubin was shown to be related to the generation and functional exertion of endothelial nitric oxide synthase (eNOS) whilst the genetic effect of NOS3 on bilirubin variability was rarely reported. Herein we assessed the associations of three single nucleotide polymorphisms (SNPs) of NOS3 (rs4496877, rs1808593, and rs3918186) with bilirubin elevation in 2077 adults. The results showed that rs1808593 was significantly associated with bilirubin elevation, and odds ratios (ORs) of dominant model for the elevation of total bilirubin (TBIL), direct bilirubin (DBIL), and indirect bilirubin (IDBIL) were 0.837, 0.821 and 0.754, respectively (P < 0.05 for all). Stratification analysis indicated that rs3918186 was significantly associated with the elevation of TBIL and IDBIL in the males, and ORs of dominant model were 1.505 and 1.440 with P < 0.05 for all. In the smoking group, significant associations of rs4496877, rs1808593, and rs3918186 with TBIL elevation were observed, and ORs of dominant model were 1.739, 0.758 and 1.626 (P < 0.05 for all). rs4496877 and rs3918186 were both associated with TBIL elevation in the drinking group, and ORs were 1.557 and 1.769 with P < 0.05 for all. In the ≥55 year-old group, rs4496877 and rs1808593 were significantly associated with DBIL and IDBIL elevations, and ORs were 1.340 and 0.790 (P < 0.05). Meanwhile, rs4496877, rs1808593, rs3918186, smoking, and drinking were shown to have a notable interaction effects on the TBIL elevation. Our findings supported that NOS3 harbors the genetic susceptibility to the bilirubin elevation. Age, gender, smoking, and drinking could be involved in the genetic modification of NOS3 on the bilirubin variability.
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Affiliation(s)
- Yingshui Yao
- Department of Epidemiology and Biostatistics, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Zhengmei Fang
- Department of Epidemiology and Biostatistics, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Song Yang
- Department of Cardiology, Affiliated Yixing People's Hospital of Jiangsu University, People's Hospital of Yixing City, Yixing 214200, China
| | - Hailong Zhao
- Central Laboratory, Affiliated Yixing People's Hospital of Jiangsu University, People's Hospital of Yixing City, Yixing 214200, China
| | - Yanchun Chen
- Department of Cardiology, Affiliated Yixing People's Hospital of Jiangsu University, People's Hospital of Yixing City, Yixing 214200, China
| | - Yuelong Jin
- Department of Epidemiology and Biostatistics, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Xianghai Zhao
- Department of Cardiology, Affiliated Yixing People's Hospital of Jiangsu University, People's Hospital of Yixing City, Yixing 214200, China
| | - Lijun Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Yuanrui Tian
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Chong Shen
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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Oliveira-Paula GH, Lacchini R, Tanus-Santos JE. Clinical and pharmacogenetic impact of endothelial nitric oxide synthase polymorphisms on cardiovascular diseases. Nitric Oxide 2017; 63:39-51. [DOI: 10.1016/j.niox.2016.08.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/10/2016] [Accepted: 08/24/2016] [Indexed: 12/30/2022]
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Kahraman CY, Tasdemir S, Sahin I, Marzioglu Ozdemir E, Yaralı O, Ziypak T, Adanur S, Kahraman M, Tatar A. The Relationship Between Endothelial Nitric Oxide Synthase Gene (NOS3) Polymorphisms, NOS3 Expression, and Varicocele. Genet Test Mol Biomarkers 2016; 20:191-6. [DOI: 10.1089/gtmb.2015.0294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Cigdem Yuce Kahraman
- Department of Medical Genetics, Erzurum Regional and Training Hospital, Erzurum, Turkey
| | - Sener Tasdemir
- Department of Medical Genetics, Ataturk University Medical Faculty, Erzurum, Turkey
| | - Ibrahim Sahin
- Department of Medical Genetics, Ataturk University Medical Faculty, Erzurum, Turkey
| | | | - Oguzhan Yaralı
- Department of Medical Genetics, Erzurum Regional and Training Hospital, Erzurum, Turkey
| | - Tevfik Ziypak
- Department of Urology, Ataturk University Medical Faculty, Erzurum, Turkey
| | - Senol Adanur
- Department of Urology, Ataturk University Medical Faculty, Erzurum, Turkey
| | - Mustafa Kahraman
- Department of Radiology, Erzurum Regional and Training Hospital, Erzurum, Turkey
| | - Abdulgani Tatar
- Department of Medical Genetics, Ataturk University Medical Faculty, Erzurum, Turkey
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New Findings in eNOS gene and Thalidomide Embryopathy Suggest pre-transcriptional effect variants as susceptibility factors. Sci Rep 2016; 6:23404. [PMID: 27004986 PMCID: PMC4804217 DOI: 10.1038/srep23404] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/18/2016] [Indexed: 12/02/2022] Open
Abstract
Antiangiogenic properties of thalidomide have created an interest in the use of the drug in treatment of cancer. However, thalidomide is responsible for thalidomide embryopathy (TE). A lack of knowledge regarding the mechanisms of thalidomide teratogenesis acts as a barrier in the aim to synthesize a safer analogue of thalidomide. Recently, our group detected a higher frequency of alleles that impair the pro-angiogenic mechanisms of endothelial nitric oxide synthase (eNOS), coded by the NOS3 gene. In this study we evaluated variable number tandem repeats (VNTR) functional polymorphism in intron 4 of NOS3 in individuals with TE (38) and Brazilians without congenital anomalies (136). Haplotypes were estimated for this VNTR with previously analyzed polymorphisms, rs2070744 (−786C > T) and rs1799983 (894T > G), in promoter region and exon 7, respectively. Haplotypic distribution was different between the groups (p = 0.007). Alleles −786C (rs2070744) and 4b (VNTR), associated with decreased NOS3 expression, presented in higher frequency in TE individuals (p = 0.018; OR = 2.57; IC = 1.2–5.8). This association was not identified with polymorphism 894T > G (p = 0.079), which influences eNOS enzymatic activity. These results suggest variants in NOS3, with pre-transcriptional effects as susceptibility factors, influencing the risk TE development. This finding generates insight for a new approach to research that pursues a safer analogue.
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Monti LD, Galluccio E, Fontana B, Spadoni S, Comola M, Marrocco Trischitta MM, Chiesa R, Comi G, Bosi E, Piatti P. Pharmacogenetic influence of eNOS gene variant on endothelial and glucose metabolism responses to L-arginine supplementation: Post hoc analysis of the L-arginine trial. Metabolism 2015; 64:1582-91. [PMID: 26385052 DOI: 10.1016/j.metabol.2015.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 08/19/2015] [Accepted: 08/23/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate whether variants of the eNOS gene are associated with endothelial and metabolic responses to L-arginine (L-arg) supplementation. MATERIAL AND METHODS We examined a single nucleotide polymorphism of the eNOS gene (rs753482-A>C) to investigate the effects of this variant on endothelial function (EF), colony-forming unit-endothelial cell (CFU-EC) number, asymmetric-dimethylarginine (ADMA) level, insulin sensitivity index (ISI), and insulin secretion (IS) in a post hoc analysis of the L-arg trial. The L-arg trial (6.4 g/day for 18 months) was a single-center, randomized, double-blind, parallel-group, placebo-controlled, phase III trial in individuals with impaired glucose tolerance and metabolic syndrome. followed by a 12-month extended follow-up period after termination of the study drug (NCT 00917449). RESULTS At baseline, EF, CFU-EC numbers, ADMA levels, and ISI were impaired in subjects carrying minor allele C (both heterozygotes, AC and homozygotes, CC) as compared to subjects carrying major allele A (homozygotes, AA) (p<0.01). Compared to placebo, L-arg increased EF, CFU-EC numbers, and ISI, and improved ADMA levels and IS (p<0.01). The greatest improvements were found in AA subjects treated with L-arg, while the worst results were found in AC+CC subjects treated with placebo. In the placebo-treated subjects, EF, CFU-EC, ISI, and IS were significantly lower and ADMA was significantly higher in AC+CC subjects than in AA subjects. CONCLUSIONS Treatment with L-arg induced similar improvements in EF, CFU-EC numbers, ADMA levels, ISI, and IS in both AA subjects and AC+CC subjects. The presence of minor allele resulted in the worst prognosis in terms of EF, CFU-EC numbers, ADMA levels, ISI, and IS during the 30-month observation period.
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Affiliation(s)
- Lucilla D Monti
- Cardio-Diabetes and Core Lab Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy.
| | - Elena Galluccio
- Cardio-Diabetes and Core Lab Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy
| | - Barbara Fontana
- Cardio-Diabetes and Core Lab Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy
| | - Serena Spadoni
- Cardio-Diabetes and Core Lab Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy
| | - Mauro Comola
- Neurology Department, IRCCS San Raffaele Hospital, Milan, Italy
| | | | - Roberto Chiesa
- Vascular Surgery, Cardio-Thoraco-Vascular Department, IRCCS San Raffaele Hospital, Milan, Italy
| | - Giancarlo Comi
- Neurology Department, IRCCS San Raffaele Hospital, Milan, Italy
| | - Emanuele Bosi
- Cardio-Diabetes and Core Lab Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy; Cardio-Metabolism and Clinical Trials Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy
| | - Piermarco Piatti
- Cardio-Metabolism and Clinical Trials Unit, Diabetes Research Institute, Department of Internal Medicine,IRCCS San Raffaele Hospital, Milan, Italy
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Oliveira-Paula GH, Lacchini R, Tanus-Santos JE. Endothelial nitric oxide synthase: From biochemistry and gene structure to clinical implications of NOS3 polymorphisms. Gene 2015; 575:584-99. [PMID: 26428312 DOI: 10.1016/j.gene.2015.09.061] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/10/2015] [Accepted: 09/22/2015] [Indexed: 02/07/2023]
Abstract
Nitric oxide (NO) is an important vasodilator with a well-established role in cardiovascular homeostasis. While mediator is synthesized from L-arginine by neuronal, endothelial, and inducible nitric oxide synthases (NOS1,NOS3 and NOS2 respectively), NOS3 is the most important isoform for NO formation in the cardiovascular system. NOS3 is a dimeric enzyme whose expression and activity are regulated at transcriptional, posttranscriptional,and posttranslational levels. The NOS3 gene, which encodes NOS3, exhibits a number of polymorphic sites including single nucleotide polymorphisms (SNPs), variable number of tandem repeats (VNTRs), microsatellites, and insertions/deletions. Some NOS3 polymorphisms show functional effects on NOS3 expression or activity, thereby affecting NO formation. Interestingly, many studies have evaluated the effects of functional NOS3 polymorphisms on disease susceptibility and drug responses. Moreover, some studies have investigated how NOS3 haplotypes may impact endogenous NO formation and disease susceptibility. In this article,we carried out a comprehensive review to provide a basic understanding of biochemical mechanisms involved in NOS3 regulation and how genetic variations in NOS3 may translate into relevant clinical and pharmacogenetic implications.
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Affiliation(s)
- Gustavo H Oliveira-Paula
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Riccardo Lacchini
- Department of Psychiatric Nursing and Human Sciences, Ribeirao Preto College of Nursing, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Jose E Tanus-Santos
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
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Nasr HB, Dimassi S, M'hadhbi R, Debbabi H, Kortas M, Tabka Z, Chahed K. Functional G894T (rs1799983) polymorphism and intron-4 VNTR variant of nitric oxide synthase (NOS3) gene are susceptibility biomarkers of obesity among Tunisians. Obes Res Clin Pract 2015; 10:465-75. [PMID: 25956856 DOI: 10.1016/j.orcp.2015.04.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 04/23/2015] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The endothelial nitric oxide synthase (NOS3) has been shown to play a role in the modulation of lipolysis. The goal of this study was to examine the impact of the G894T (rs1799983) and a 27 bp variable number of tandem repeats (VNTR 4a/b) of NOS3 gene on obesity in a sample of the Tunisian population. RESEARCH METHODS AND PROCEDURES The study included 211 normal weight subjects and 183 obese patients. NOS3 G894T and 4a/b variants were determined by PCR analysis and examined for association with obesity-related traits. The effect of obesity on forearm skin blood flow (FSBF) response to acetylcholine, an endothelium-dependent vasodilator was determined by laser Doppler iontophoresis. RESULTS In case-control studies, both G894T and 4a/b variants were associated with obesity. A significantly increased risk of obesity was found with the NOS3(G894T) TT genotype (OR:2.62, P=0.04). This association remains significant after adjustments for age and gender (OR: 2.93, P=0.03). A higher risk was also observed for carriers of the G894T allele (OR: 1.72, P=0.001). Stratified analysis by gender revealed that obese men (but not women) had significantly higher frequency of TT genotypes compared to controls (9.9% vs. 2.9%, P=0.01). Carriers of the 4b allele presented a significantly higher risk of obesity than non-carriers even after adjustments for age and gender (OR (95%CI): 1.72 (1.16-2.56), P=0.004). Correlations with anthropometric parameters revealed that carriers of TT and bb genotypes had significantly higher body mass index compared to those homozygous for the G and a alleles (P=0.0004). CONCLUSION This study provides the first evidence for the association of G894T and 4a/b variants with body mass index and the risk of obesity in Tunisians. These polymorphisms did not exhibit, however any significant association with both metabolic traits and vascular function.
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Affiliation(s)
- Hela Ben Nasr
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia
| | - Saloua Dimassi
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia
| | - Refka M'hadhbi
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia
| | - Haithem Debbabi
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia
| | - Mondher Kortas
- Laboratoire d'Hématologie, CHU Farhat Hached, Sousse, Tunisia
| | - Zouhair Tabka
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia
| | - Karim Chahed
- Unité de Recherche UR12ESO6, Physiologie de l'Exercice et Physiopathologie: de l'Intégré au Moléculaire «Biologie, Medecine et Santé», Faculté de Medecine Ibn el Jazzar, Sousse, Tunisia; Département de Biologie, Faculté des Sciences de Sfax, Tunisia.
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Azzam N, Zafrir B, Fares F, Smith Y, Salman N, Nevzorov R, Amir O. Endothelial nitric oxide synthase polymorphism and prognosis in systolic heart failure patients. Nitric Oxide 2015; 47:91-6. [PMID: 25917853 DOI: 10.1016/j.niox.2015.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 03/29/2015] [Accepted: 04/16/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND The endothelial nitric oxide synthase (eNOS) gene single nucleotide polymorphism G894T is associated with thrombotic vascular diseases. However, its functional significance is controversial and data are scarce concerning its influence in heart failure (HF). METHODS We studied 215 patients with chronic systolic HF. DNA was analyzed for eNOS gene G894T polymorphism using PCR and DNA sequencing. Evaluation of clinical characteristics and analysis of factors associated with 2-year mortality were performed for the homozygous G-allele G894T variant (GG), relative to the TT and GT variants. RESULTS The genotype distributions of eNOS G894T alleles were: GG 135 patients (63%) and TT/GT 80 (37%). Two-year mortality was significantly higher in the GG variant (48%) than the combined TT/GT group (32%). The usage of nitrates was associated with increased 2-year mortality (HR 2.0, 95% CI 1.28-3.17; p = 0.003), which was most significant in the GG group treated with nitrates (73.5%) in comparison to the TT/GT group not treated with nitrates (34%); HR 2.75, 95% CI 1.57-4.79, P < 0.001. CONCLUSIONS Homozygosity for the G allele of the eNOS G894T polymorphism was associated with worse survival in systolic HF patients, especially in those treated with nitrates. ENOS polymorphism may result in different mechanistic interactions in HF than in thrombotic vascular diseases, suggesting that overexpression of NO may be associated with deleterious effects in systolic HF.
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Affiliation(s)
- Naiel Azzam
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel; Department of Molecular Genetics, Carmel Medical Center, Haifa, Israel
| | - Barak Zafrir
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, Haifa, Israel; Ruth and Bruce Rappaport School of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Fuad Fares
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel; Department of Molecular Genetics, Carmel Medical Center, Haifa, Israel
| | - Yoav Smith
- Genomic Data Analysis Unit, Hadassah Medical School, Hebrew University of Jerusalem, Israel
| | - Nabeeh Salman
- Department of Cardiovascular Medicine, Poriya Medical Center, Tiberius, Israel; Faculty of Medicine, Bar-Ilan University, Israel
| | - Roman Nevzorov
- Department of Cardiovascular Medicine, Poriya Medical Center, Tiberius, Israel; Faculty of Medicine, Bar-Ilan University, Israel
| | - Offer Amir
- Department of Cardiovascular Medicine, Poriya Medical Center, Tiberius, Israel; Faculty of Medicine, Bar-Ilan University, Israel.
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Mostafa T, Rashed LA, Nabil N, Fouad H, Sabry D, El-Saied DM. Endothelial nitric oxide synthase gene polymorphism relationship with semen parameters and oxidative stress in infertile oligoasthenoteratozoospermic men. Urology 2015; 85:1058-1061. [PMID: 25744373 DOI: 10.1016/j.urology.2015.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/16/2015] [Accepted: 01/21/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To assess endothelial nitric oxide synthase (eNOS) gene polymorphism relationship with semen parameters and oxidative stress in infertile oligoasthenoteratozoospermic (OAT) men. MATERIALS AND METHODS Three hundred subjects were divided into healthy fertile men (n = 80) and infertile OAT men (n = 220). They were subjected to history taking, clinical examination, and semen analysis in addition to malondialdehyde and glutathione peroxidase estimation in seminal plasma. Polymorphisms of eNOS G894T and T786C genotypes in peripheral blood were identified by the polymerase chain reaction-restriction fragment length polymorphism analysis. RESULTS Comparing infertile OAT men with fertile controls, eNOS genotype G894T demonstrated prevalence of 36.8% vs 50% for wild type (GG), 35.0% vs 47.5% for heterozygous type (GT), and 28.2% vs 2.5% for mutant homozygous type (TT). Compared with GG homozygotes, carriers with A allele exhibited >1.716-fold increased risk of OAT occurrence. Comparing infertile OAT men with fertile controls, eNOS genotype T786C demonstrated prevalence of 37.3% vs 51.3% for wild type (TT), 32.7% vs 45% for heterozygous type (TC), and 30% vs 3.7% for mutant type (CC) with significant differences. Compared with TT homozygotes, carriers with C allele exhibited >1.769-fold increased risk of OAT occurrence. G894T and T786C genotypes demonstrated significant negative correlation with sperm count, total sperm motility, sperm normal forms, and seminal glutathione peroxidase, and significant positive correlation with seminal malondialdehyde. G894T genotype demonstrated significant positive correlation with T786C genotype. CONCLUSION There is a significant relationship between eNOS genotypes T786C, G894T polymorphisms with decreased sperm parameters and increased seminal oxidative stress.
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Affiliation(s)
- Taymour Mostafa
- Department of Andrology, Sexology & STDs, Faculty of Medicine, Cairo University, Cairo, Egypt.
| | - Laila A Rashed
- Department of Medical Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Nashaat Nabil
- Department of Andrology, Sexology & STDs, Faculty of Medicine, Beni Suef University, Beni Suef, Egypt
| | - Hanan Fouad
- Department of Medical Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Dina Sabry
- Department of Medical Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Dalia M El-Saied
- Department of Andrology, Sexology & STDs, Faculty of Medicine, Beni Suef University, Beni Suef, Egypt
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18
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Nunes RAB, Barroso LP, Pereira ADC, Krieger JE, Mansur AJ. Gender-related associations of genetic polymorphisms of α-adrenergic receptors, endothelial nitric oxide synthase and bradykinin B2 receptor with treadmill exercise test responses. Open Heart 2014; 1:e000132. [PMID: 25544888 PMCID: PMC4275769 DOI: 10.1136/openhrt-2014-000132] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 10/01/2014] [Accepted: 11/04/2014] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Treadmill exercise test responses have been associated with cardiovascular prognosis in individuals without overt heart disease. Neurohumoral and nitric oxide responses may influence cardiovascular performance during exercise testing. Therefore, we evaluated associations between functional genetic polymorphisms of α-adrenergic receptors, endothelial nitric oxide synthase, bradykinin receptor B2 and treadmill exercise test responses in men and women without overt heart disease. METHODS We enrolled 766 (417 women; 349 men) individuals without established heart disease from a check-up programme at the Heart Institute, University of São Paulo Medical School. Exercise capacity, chronotropic reserve, maximum heart-rate achieved, heart-rate recovery, exercise systolic blood pressure (SBP), exercise diastolic blood pressure (DBP) and SBP recovery were assessed during exercise testing. Genotypes for the α-adrenergic receptors ADRA1A Arg347Cys (rs1048101), ADRA2A 1780 C>T (rs553668), ADRA2B Del 301-303 (rs28365031), endothelial nitric synthase (eNOS) 786 T>C (rs2070744), eNOS Glu298Asp (rs1799983) and BK2R (rs5810761) polymorphisms were assessed by PCR and high-resolution melting analysis. RESULTS Maximum SBP was associated with ADRA1A rs1048101 (p=0.008) and BK2R rs5810761 (p=0.008) polymorphisms in men and ADRA2A rs553668 (p=0.008) and ADRA2B rs28365031 (p=0.022) in women. Maximum DBP pressure was associated with ADRA2A rs553668 (p=0.002) and eNOS rs1799983 (p=0.015) polymorphisms in women. Exercise capacity was associated with eNOS rs2070744 polymorphisms in women (p=0.01) and with eNOS rs1799983 in men and women (p=0.038 and p=0.024). CONCLUSIONS The findings suggest that genetic variants of α-adrenergic receptors and bradykinin B2 receptor may be involved with blood pressure responses during exercise tests. Genetic variants of endothelial nitric oxide synthase may be involved with exercise capacity and blood pressure responses during exercise tests. These responses may be gender-related.
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Affiliation(s)
- Rafael Amorim Belo Nunes
- Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo , São Paulo , Brazil
| | - Lúcia Pereira Barroso
- Institute of Mathematics and Statistics, Universidade de São Paulo , São Paulo , Brazil
| | - Alexandre da Costa Pereira
- Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo , São Paulo , Brazil
| | - José Eduardo Krieger
- Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo , São Paulo , Brazil
| | - Alfredo José Mansur
- Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo , São Paulo , Brazil
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Türkanoğlu Özçelik A, Can Demirdöğen B, Demirkaya Ş, Adalı O. Importance of NOS3 Genetic Polymorphisms in the Risk of Development of Ischemic Stroke in the Turkish Population. Genet Test Mol Biomarkers 2014; 18:797-803. [DOI: 10.1089/gtmb.2014.0176] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Aysun Türkanoğlu Özçelik
- Joint Graduate Program in Biochemistry, Department of Molecular Biology and Genetics, Middle East Technical University, Ankara, Turkey
- Food Safety and Agricultural Research Center, Akdeniz University, Antalya, Turkey
| | - Birsen Can Demirdöğen
- Biomedical Engineering Department, TOBB Economics and Technology University, Ankara, Turkey
| | - Şeref Demirkaya
- Department of Neurology, Gülhane Military Medical Academy, Ankara, Turkey
| | - Orhan Adalı
- Joint Graduate Program in Biochemistry, Department of Molecular Biology and Genetics, Middle East Technical University, Ankara, Turkey
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20
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Sakar MN, Atay AE, Demir S, Bakir VL, Demir B, Balsak D, Akay E, Ulusoy AI, Verit FF. Association of endothelial nitric oxide synthase gene G894T polymorphism and serum nitric oxide levels in patients with preeclampsia and gestational hypertension. J Matern Fetal Neonatal Med 2014; 28:1907-11. [PMID: 25275587 DOI: 10.3109/14767058.2014.971748] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Pregnancy-induced hypertension is one of the most important cause of maternal-fetal morbidity and mortality. Pregnancy-related hypertensive disorders are usually associated with diminished nitric oxide (NO) levels. We aimed to evaluate the role of serum NO levels and eNOS gene G894T polymorphism on hypertensive disorders of pregnancy. METHODS Eighty patients with gestational hypertension or preeclampsia, and 80 healthy pregnants were enrolled to analyze serum NO levels and G894T polymorphism of the eNOS gene. NO level was analyzed by high-performance liquid chromatography (HPLC) method. The G894T polymorphism of the eNOS gene was determined by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP). RESULTS There was no significant difference between groups in terms of G894T/eNOS genotype and allele frequencies (p > 0.05). Serum NO levels were significantly lower in the patients group. In the control group, subjects with thymine-thymine (TT) genotype had significantly lower NO levels when compared to subjects with guanine-guanine (GG) or guanine-thymine (GT) genotype (p < 0.05). CONCLUSIONS We failed to demonstrate an association between eNOS gene G894T polymorphism and serum NO levels in patients with pregnancy-induced hypertensive disorders. We established a relation between pregnancy-induced hypertension and low NO levels.
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Affiliation(s)
- Mehmet Nafi Sakar
- a Department of Obstetrics and Gynecology , Suleymaniye Maternity Education and Research Hospital , Istanbul , Turkey
| | - Ahmet Engin Atay
- b Department of Internal Medicine , Bagcilar Education and Research Hospital , Istanbul , Turkey
| | - Sureyya Demir
- c Department of Obstetrics and Gynecology , Haseki Education and Research Hospital , Istanbul , Turkey
| | - Vuslat Lale Bakir
- c Department of Obstetrics and Gynecology , Haseki Education and Research Hospital , Istanbul , Turkey
| | - Bulent Demir
- c Department of Obstetrics and Gynecology , Haseki Education and Research Hospital , Istanbul , Turkey
| | - Deniz Balsak
- d Department of Obstetrics and Gynecology , MH Diyarbakir Obstetrics and Gynecology Hospital , Diyarbakir , Turkey , and
| | - Emrullah Akay
- a Department of Obstetrics and Gynecology , Suleymaniye Maternity Education and Research Hospital , Istanbul , Turkey
| | - A Ibrahim Ulusoy
- e Department of General Surgery , Suleymaniye Maternity Education and Research Hospital , Istanbul , Turkey
| | - Fatma Ferda Verit
- a Department of Obstetrics and Gynecology , Suleymaniye Maternity Education and Research Hospital , Istanbul , Turkey
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Effects of an aqueous extract of dangguijagyagsan on serum lipid levels and blood flow improvement in ovariectomized rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:497836. [PMID: 25276217 PMCID: PMC4171084 DOI: 10.1155/2014/497836] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 08/12/2014] [Accepted: 08/12/2014] [Indexed: 01/14/2023]
Abstract
Dangguijagyagsan (DJS), a traditional herbal prescription, has long been used to treat menopause-related symptoms. We identified the cardioprotective effects of an aqueous extract of DJS using an ovariectomized (OVX) and ferric chloride- (FeCl-) induced carotid thrombosis rat model. Female Sprague-Dawley (SD) rats were ovariectomized or Sham-operated (Sham-control). The ovariectomized rats were divided into three groups: OVX with saline (OVX-control), aspirin 30 mg/kg/day (OVX-ASA), and DJS 100 mg/kg/day (OVX-DJS). The treatments were administered for 5 weeks. Then, blood samples were collected to analyze the serum lipid levels and platelet aggregation. The topical application of 40% FeCl3 induced intravascular thrombosis, which was used to test thrombotic occlusion and for histological examination. Body weight and the levels of total cholesterol (TC), triglyceride (TG), and LDL-cholesterol (LDL-C) increased in the OVX rats. These effects were reduced by ASA and DJS treatment. In addition, ASA and DJS treatment significantly inhibited platelet aggregation. These treatments also increased time to occlusion and decreased both thrombus size and the presence of collagen fibers in surrounding vessel walls compared with the Sham-control and OVX-control groups. These results suggest that DJS has beneficial effects in terms of preventing cardiovascular disease in menopausal woman because it can reduce the serum lipid levels and improve blood flow by inhibiting platelet aggregation and thrombus formation.
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Clapauch R, Mourão AF, Mecenas AS, Maranhão PA, Rossini A, Bouskela E. Endothelial function and insulin resistance in early postmenopausal women with cardiovascular risk factors: importance of ESR1 and NOS3 polymorphisms. PLoS One 2014; 9:e103444. [PMID: 25077953 PMCID: PMC4117493 DOI: 10.1371/journal.pone.0103444] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/30/2014] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular benefits from estradiol activation of nitric oxide endothelial production may depend on vascular wall and on estrogen receptor alpha (ESR1) and nitric oxide synthase (NOS3) polymorphisms. We have evaluated the microcirculation in vivo through nailfold videocapillaroscopy, before and after acute nasal estradiol administration at baseline and after increased sheer stress (postocclusive reactive hyperemia response) in 100 postmenopausal women, being 70 controls (healthy) and 30 simultaneously hypertensive and diabetic (HD), correlating their responses to PvuII and XbaI ESR1 polymorphisms and to VNTR, T-786C and G894T NOS3 variants. In HD women, C variant allele of ESR1 Pvull was associated to higher vasodilatation after estradiol (1.72 vs 1.64 mm/s, p = 0.01 compared to TT homozygotes) while G894T and T-786C NOS3 polymorphisms were connected to lower increment after shear stress (15% among wild type and 10% among variant alleles, p = 0.02 and 0.04). The G variant allele of ESR1 XbaI polymorphism was associated to higher HOMA-IR (3.54 vs. 1.64, p = 0.01) in HD and higher glucose levels in healthy women (91.8 vs. 87.1 mg/dl, p = 0.01), in which increased waist and HOMA-IR were also related to the G allele in NOS3 G894T (waist 93.5 vs 88.2 cm, p = 0.02; HOMA-IR 2.89 vs 1.48, p = 0.05). ESR1 Pvull, NOS3 G894T and T-786C polymorphism analysis may be considered in HD postmenopausal women for endothelial response prediction following estrogen therapy but were not discriminatory for endothelial response in healthy women. ESR1 XbaI and G894T NOS3 polymorphisms may be useful in accessing insulin resistance and type 2 diabetes risks in all women, even before menopause and occurrence of metabolic disease.
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Affiliation(s)
- Ruth Clapauch
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
- Hospital da Lagoa, Endocrinology Sector, Health Ministry, Rio de Janeiro, Brazil
- * E-mail:
| | - André Felipe Mourão
- Departamento de Bioquímica, IBRAG, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anete S. Mecenas
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Priscila A. Maranhão
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Rossini
- Departamento de Bioquímica, IBRAG, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eliete Bouskela
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
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Polymorphisms in the endothelial nitric oxide synthase gene in thalidomide embryopathy. Nitric Oxide 2013; 35:89-92. [PMID: 24055736 DOI: 10.1016/j.niox.2013.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 09/03/2013] [Accepted: 09/10/2013] [Indexed: 11/23/2022]
Abstract
Thalidomide is one of the most potent teratogens known to humans. It is currently used for many clinical situations such as treatment of leprosy reactions and multiple myeloma. However, the teratogenic mechanisms by which it produces morphological defects still remain unclear. One of the hypotheses is the blockage of angiogenesis by reduction of nitric oxide (NO). In this study, we evaluated two functional polymorphisms of the endothelial nitric oxide synthase (eNOS) gene which is a constitutively expressed enzyme responsible for production of NO. The promoter -786T>C exon 7 (896G>T) polymorphisms were genotyped using real-time PCR for 28 individuals with thalidomide embryopathy (TE), 27 first-degree relatives of these individuals, and 68 individuals from the general population. Their allele, genotypic, and haplotypic frequencies were compared. A significant difference was observed in the -786T>C polymorphism genotypes (p=0.03) between the groups affected by TE and those unaffected (non-relatives). The TT genotype of the 896G>T polymorphism was observed in 10.7% of those affected and 2.9% of those unaffected, but the difference was not statistically significant (p=0.09). The haplotypic analysis indicated that the wild haplotype -786T/896G was distributed differently in the affected and unaffected groups (p=0.004). These results indicate that the individuals with TE have a higher frequency of alleles associated with lower expression of eNOS, indicating that this may be a genotype susceptible to TE.
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Mineo C. Inhibition of nitric oxide and antiphospholipid antibody-mediated thrombosis. Curr Rheumatol Rep 2013; 15:324. [PMID: 23519891 DOI: 10.1007/s11926-013-0324-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The antiphospholipid syndrome (APS) is characterized by recurrent vascular thrombosis, thrombocytopenia, and fetal loss occurring in the presence of antiphospholipid antibodies (aPL). Along with arterial and venous thrombosis and pregnancy complications, patients with APS have an increased risk of myocardial infarction, stroke, and coronary artery disease, resulting from vascular cell dysfunction induced by aPL. Accumulating evidence to date indicates that interactions between circulating aPL and cell surface molecules of target cells, primarily endothelial cells and platelets, underlie the vascular disease phenotypes of APS. However, the molecular basis of APS is poorly understood. Nitric oxide produced by endothelial cells is a key determinant of vascular health that regulates several physiologic processes, including thrombosis, endothelial-leukocyte interaction, vascular cell migration, and the modulation of vascular tone. This review will discuss recent findings that indicate a novel mechanism by which aPL antagonize endothelial cell production of nitric oxide and thereby promote thrombosis.
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Affiliation(s)
- Chieko Mineo
- Department of Pediatrics, Division of Pulmonary and Vascular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9063, USA.
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Cheema BS, Kohli HS, Sharma R, Bhansali A, Khullar M. Endothelial nitric oxide synthase gene polymorphisms and renal responsiveness to RAS inhibition therapy in type 2 diabetic Asian Indians. Diabetes Res Clin Pract 2013; 99:335-42. [PMID: 23260854 DOI: 10.1016/j.diabres.2012.11.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 11/07/2012] [Accepted: 11/23/2012] [Indexed: 02/07/2023]
Abstract
AIM To investigate the association of functional single nucleotide polymorphisms (SNPs) of the endothelial nitric oxide synthase gene (eNOS) gene (T-786C, G894T) and one variable number tandem repeat polymorphism (aa 27VNTR bb) with reno-protective response to angiotensin converting enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) therapy in North Indian type 2 diabetic mellitus (T2DM) subjects with cases having diabetic nephropathy (DN) and controls without DN. METHOD We genotyped three polymorphisms of eNOS (two SNPs: T-786C, G894T and one 27 VNTR) in T2DM patients with overt nephropathy (cases: n=320) and T2DM patients without overt nephropathy (controls: n=490), using validated PCR-RFLP assays. These 810 North Indian T2DM patients treated with ACEI or ARB after diagnosis were followed up for 3 years. Percent changes in eGFR, urinary albumin excretion (UAE), serum creatinine at the end of 3 years of treatment were taken as end points of renoprotective response. RESULT We observed that in normoalbuminuric patients, eNOS -786 CC genotype and haplotypes C-b-G and C-b-T were associated with lesser renoprotective response to ACEI. While, in macroalbuminurics, eNOS -786 CC genotype, haplotypes C-b-G and C-b-T and 27VNTR aa were associated with better renoprotective response to ACEI/ARB. CONCLUSION Our results showed that eNOS T-786C CC genotype and 27VNTR individually and in interaction with other eNOS SNPs modulate renoprotective efficacy of ACEI and ARB in T2DM patients, depending on the status of proteinuria.
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Affiliation(s)
- Balneek Singh Cheema
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Silva PS, Fontana V, Luizon MR, Lacchini R, Silva WA, Biagi C, Tanus-Santos JE. eNOS and BDKRB2 genotypes affect the antihypertensive responses to enalapril. Eur J Clin Pharmacol 2012; 69:167-77. [DOI: 10.1007/s00228-012-1326-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 05/24/2012] [Indexed: 12/13/2022]
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Effects of the T-786C, G894T, and Intron 4 VNTR (4a/b) polymorphisms of the endothelial nitric oxide synthase gene on the risk of prostate cancer. Urol Oncol 2012; 31:1132-40. [PMID: 22317880 DOI: 10.1016/j.urolonc.2012.01.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 12/29/2011] [Accepted: 01/03/2012] [Indexed: 11/22/2022]
Abstract
Several studies have shown that nitric oxide (NO) and nitric oxide synthase (NOS) system plays an important role in carcinogenesis. Endothelial nitric oxide synthase (eNOS) gene polymorphisms significantly affects serum NO concentrations. Studies addressing the relationship between eNOS gene polymorphisms and prostate cancer (CaP) are very scarce. We examined the association between the 3 eNOS gene polymorphisms (T-786C, G894T, and 4a/b) with risk and clinical features of CaP. One hundred seventy patients with CaP (mean age 63.6 ± 12.4 years) and 340 age-matched healthy controls (mean age 64.9 ± 12.9 years) were recruited in this case-control study. Genotyping was performed by polymerase chain reaction restriction fragment length polymorphism (PCR-RLFP) technique. For T-786C polymorphism, we found that CC genotype was associated to CaP risk [odds ratio (OR) = 3.62, 95% confidence interval (CI): 1.89-7.74, P = 0.002), high grade tumor (OR = 2.46, 95% CI:1.78-4.72; P = 0.006), and advanced disease (OR = 4.67, 95% CI: 2.64-8.61; P = 0.002). Neither the CaP risk nor clinical features of CaP were associated with the G894T polymorphism. It was found that, compared with 4a/b bb genotype, the 4a/b "a" variant genotypes were associated with an increased risk of CaP in an allele dose dependent manner (OR = 2.12, 95% CI: 1.68-3.44; P = 0.031 for 4a/b ab genotype, and OR = 4.32, 95% CI: 2.21-6.08; P = 0.001 for 4a/b aa genotype). In addition, genotypes with the "a" allele of the eNOS 4a/b polymorphism predispose the patients to high grade (OR = 4.76, 95% CI: 2.74-8.62; P = 0.001) and advanced CaP (OR = 5.28, 95% CI: 3.64-8.72; P = 0.001). Furthermore, the T-Asp-b and C-Asp-b haplotypes were associated with a significantly decreased risk of CaP (OR = 0.44, 95% CI: 0.33-0.77; P = 0.004, and OR = 0.39, 95% CI: 0.26-0.61; P = 0.001, respectively). We found significant differences in genotype distribution and allelic frequencies between CaP patients and controls for the T-786C, and 4a/b eNOS polymorphisms.
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Kang JH, Wiggs JL, Rosner BA, Haines J, Abdrabou W, Pasquale LR. Endothelial nitric oxide synthase gene variants and primary open-angle glaucoma: interactions with hypertension, alcohol intake, and cigarette smoking. ARCHIVES OF OPHTHALMOLOGY (CHICAGO, ILL. : 1960) 2011; 129:773-80. [PMID: 21670344 PMCID: PMC3337676 DOI: 10.1001/archophthalmol.2011.118] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To evaluate whether an association between risk of any of the factors of hypertension, alcohol intake, and cigarette smoking and the risk of primary open-angle glaucoma (POAG) depended on nitric oxide synthase 3 (NOS3) gene variants. METHODS Two functional single-nucleotide polymorphisms (SNPs) (T-786C [rs2070744] and Glu298Asp [rs1799983]) and 2 tagging SNPs (rs7830 and rs3918188) were evaluated in nested case-control studies from the Nurses' Health Study (1980-2002) and the Health Professionals' Follow-up Study (1986-2002). Participants were 40 years of age or older and white, and were followed up biennially. We included 527 incident case patients with POAG and 1539 control participants, matched by cohort, age, and eye examination at the matched case patients' diagnosis dates. Cohort-specific relative risks were estimated using multivariable conditional logistic regression and were pooled using meta-analytic methods. RESULTS The association between hypertension and POAG depended on T-786C SNP variants. Compared with TT homozygotes without hypertension, the TT homozygotes with hypertension were at significantly higher risk of POAG (relative risk,1.45 [95% confidence interval, 1.01-2.08]); however, among carriers of the variant (C) allele, hypertension was not associated with POAG (P interaction = .007). Similarly, compared with CC homozygotes with the rs7830 tagging SNP who never smoked, CC homozygotes who were past or current smokers were at significantly higher risk of POAG (relative risk, 1.63 [95% confidence interval, 1.15-2.31]); however, among carriers of the variant allele (A), smoking was not associated with POAG (P interaction = .004). Interactions were not observed with alcohol intake. CONCLUSIONS The associations between hypertension and cigarette smoking in relation to POAG depended on NOS3 SNPs.
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Affiliation(s)
- Jae Hee Kang
- Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham & Women’s Hospital, Boston, MA 02115
| | - Janey L. Wiggs
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA 02114
| | - Bernard A. Rosner
- Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham & Women’s Hospital, Boston, MA 02115
- Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115
| | - Jonathan Haines
- Center for Human Genetics Research, Vanderbilt University School of Medicine, Nashville, TN 37232
| | - Wael Abdrabou
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA 02114
| | - Louis R. Pasquale
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA 02114
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Association between -786TC polymorphism in the endothelial nitric oxide synthase gene and hypertension in the Tunisian population. Exp Mol Pathol 2011; 90:210-4. [DOI: 10.1016/j.yexmp.2010.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 12/20/2010] [Indexed: 11/21/2022]
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Babaoglu MO, Dikmenoglu N, Ileri-Gurel E, Seringec N, Zoto T, Yasar U, Kayaalp SO, Bozkurt A. Functional Effects of Endothelial Nitric Oxide Synthase Genetic Polymorphisms on Haemorheological Parameters in Healthy Human Individuals. Basic Clin Pharmacol Toxicol 2010; 108:171-6. [DOI: 10.1111/j.1742-7843.2010.00637.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Safarinejad MR, Shafiei N, Safarinejad S. The role of endothelial nitric oxide synthase (eNOS) T-786C, G894T, and 4a/b gene polymorphisms in the risk of idiopathic male infertility. Mol Reprod Dev 2010; 77:720-7. [DOI: 10.1002/mrd.21210] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sandrim VC, Palei ACT, Sertorio JT, Cavalli RC, Duarte G, Tanus-Santos JE. Effects of eNOS polymorphisms on nitric oxide formation in healthy pregnancy and in pre-eclampsia. Mol Hum Reprod 2010; 16:506-10. [PMID: 20457799 DOI: 10.1093/molehr/gaq030] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Pre-eclampsia (PE) is associated with decreased nitric oxide (NO) formation. However, no previous study has examined whether genetic variations in the endothelial NO synthase (eNOS) affect this alteration. We hypothesized that PE decreases NO formation depending on eNOS polymorphisms. We examined how three eNOS polymorphisms [T-786C, rs2070744; Glu298Asp, rs1799983; 27 bp variable number of tandem repeats (VNTR) in intron 4] affect plasma nitrite concentrations in 205 pregnant women [107 healthy pregnant (HP) and 98 PE]. Genotypes were determined and eNOS haplotypes were inferred using the PHASE 2.1 program. The plasma nitrite concentrations were determined using an ozone-based chemiluminescence assay. The Glu298Asp polymorphism had no effects on the plasma nitrite concentrations. Higher nitrite levels were found in HP women with the CC versus TT genotype for the T-786C polymorphism (277.9 +/- 19.5 versus 140.6 +/- 8.2 nM; P < 0.05). Lower nitrite levels were found in healthy women with the 4a4a versus 4b4b genotype for the VNTR polymorphism (95.1 +/- 3.3 versus 216.1 +/- 16.8 nM; P < 0.05). No effects of genotypes were found in PE women (all P > 0.05). The 'C Glu b' haplotype was more frequent in the HP group than in the PE group (20 versus 5; P = 0.0044). This haplotype was associated with higher nitrite concentrations than the other haplotypes in healthy pregnancies (P < 0.05). No differences in nitrite concentrations were found among PE women with different eNOS haplotypes (P > 0.05). These findings indicate that eNOS polymorphisms affect endogenous NO formation in normal pregnancy, but not in PE, and that the 'C Glu b' haplotype may protect against the development of PE by increasing endogenous NO formation.
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Affiliation(s)
- Valeria C Sandrim
- Nucleo de Pos-Graduacao e Pesquisa da Santa Casa de Belo Horizonte, 30150-221 Belo Horizonte, MG, Brazil
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Lacchini R, Silva PS, Tanus-Santos JE. A pharmacogenetics-based approach to reduce cardiovascular mortality with the prophylactic use of statins. Basic Clin Pharmacol Toxicol 2010; 106:357-61. [PMID: 20210789 DOI: 10.1111/j.1742-7843.2010.00551.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nitric oxide (NO) is the main endothelial-derived relaxation factor and plays a major role in cardiovascular homeostasis. This key signalling molecule is synthesised by a family of nitric oxide synthases (NOS), and the endothelial isoform (eNOS) is the most important for nitric oxide formation in the cardiovascular system. Cardiovascular drugs including statins increase eNOS expression and up-regulate NO formation, and this effect may be responsible for protective, pleiotropic effects produced by statins. However, the genetic background may also affect NO formation in the cardiovascular system, and recent studies have shown that genetic polymorphisms in the eNOS gene modify endogenous NO formation and the risk of developing cardiovascular diseases. For example, cases with the CC genotype for the T(-786)C polymorphism in the eNOS gene are at increased cardiovascular risk when compared with those with the TT genotype. Interestingly, pharmacogenetic studies have recently indicated that atorvastatin improves NO formation more clearly in these individuals. However, it is not known whether this polymorphism really increases cardiovascular morbidity and mortality, and whether atorvastatin or other statins attenuate the morbidity and mortality rates in cases with the CC genotype. If proved true, then statins-induced up-regulation of eNOS and increased NO formation could compensate for a genetic 'disadvantage' in cases with the CC genotype. This could be a significant advance in the prevention of cardiovascular events. It is necessary although to validate this hypothesis with clinical trials which will require a long follow-up to assess relevant clinical events and not only surrogate biomarkers.
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Affiliation(s)
- Riccardo Lacchini
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
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Fatini C, Sticchi E, Bolli P, Marcucci R, Giusti B, Paniccia R, Gori AM, Gensini GF, Abbate R. eNOS gene influences platelet phenotype in acute coronary syndrome patients on dual antiplatelet treatment. Platelets 2010; 20:548-54. [PMID: 19891529 DOI: 10.3109/09537100903337401] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Nitric Oxide (NO) plays a relevant role in regulating platelet recruitment and eNOS is the major isoform known to be expressed in platelets. Polymorphisms in the eNOS gene with a reduced NO availability might affect platelet phenotype. The aim of our study was to evaluate the role of eNOS-786T > C, 894G > T and 4a/4b polymorphisms in modulating platelet phenotype in 1442 acute coronary syndrome (ACS) patients on dual antiplatelet therapy, previously investigated in relation to platelet function. Platelet aggregation on platelet-rich plasma after collagen (2 microg/mL), ADP (10 microM) and arachidonic acid (AA) (1 mM) stimuli and the genetic analysis of eNOS polymorphisms were assessed. In subjects carrying the eNOS 4a and -786C alleles a significantly higher maximal platelet aggregation value after AA was found (p = 0.02 and p = 0.047, respectively). eNOS 4a but not -786C allele weakly influenced platelet aggregation after collagen stimulus (p = 0.05). eNOS 4a allele significantly and independently influenced AA-induced platelet aggregation (p = 0.01). A significantly higher percentage of patients with AA-induced high residual platelet reactivity (RPR) was found in subjects carrying both eNOS 4a and -786C allele (p = 0.03 and p = 0.04, respectively). At logistic multivariate analysis, the eNOS 4a allele significantly influenced the AA-induced high residual platelet reactivity (p = 0.02). This study evidences a role for eNOS gene in moderately, but significantly, modulating platelet phenotype in a high-risk population on dual antiplatelet treatment.
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Affiliation(s)
- Cinzia Fatini
- Department of Medical and Surgical Critical Care, Department of Heart and Vessels, Azienda Ospedaliero-Universitaria Careggi, University of Florence, 50134 Florence, Italy.
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Sandrim VC, Palei ACT, Luizon MR, Izidoro-Toledo TC, Cavalli RC, Tanus-Santos JE. eNOS haplotypes affect the responsiveness to antihypertensive therapy in preeclampsia but not in gestational hypertension. THE PHARMACOGENOMICS JOURNAL 2009; 10:40-5. [PMID: 19704415 DOI: 10.1038/tpj.2009.38] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Variations of the endothelial nitric oxide synthase (eNOS) gene have been associated with hypertensive disorders of pregnancy. We examined whether eNOS polymorphisms affect the therapeutic responses of women with gestational hypertension (GH) or preeclampsia (PE). We studied 304 hypertensive pregnant women (152 GH and 152 PE), who were stratified according to clinical and laboratorial parameters of therapeutic responsiveness. We compared the frequencies of three eNOS genetic polymorphisms (T-786C, Glu298Asp and b/a intron 4) in responsive and nonresponsive PE and GH patients. We found no significant differences in genotype or allele distributions when responsive and nonresponsive groups were compared (both PE or GH; all P>0.05). However, the eNOS haplotype distribution differed in PE (but not in GH)-responsive and -nonresponsive groups (P=0.0003). The 'C-Glu-a' and 'T-Asp-a' hapotypes were associated with responsiveness and nonresponsiveness to therapy, respectively (both P<0.001), thus suggesting that eNOS haplotypes affect the responsiveness to antihypertensive therapy in PE.
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Affiliation(s)
- V C Sandrim
- Santa Casa de Belo Horizonte, Av. Francisco Sales 1111, Belo Horizonte, MG, Brazil
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Luizon MR, Izidoro-Toledo TC, Simoes AL, Tanus-Santos JE. Endothelial nitric oxide synthase polymorphisms and haplotypes in Amerindians. DNA Cell Biol 2009; 28:329-34. [PMID: 19435422 DOI: 10.1089/dna.2009.0878] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interethnic disparities in the distribution of endothelial nitric oxide synthase (eNOS) polymorphisms may affect nitric oxide (NO)-mediated effects of and responses to drugs. While there are differences between black and white subjects there is no information regarding the distribution of eNOS gene alleles and haplotypes in Amerindians. We studied three clinically relevant eNOS polymorphisms (T(-786)C in the promoter, a variable number of tandem repeats in intron 4, and the Glu298Asp in exon 7) and eNOS haplotypes in 170 Amerindians from three tribes of the Brazilian Amazon. The results were compared with previous findings for black and white Brazilians. The Asp298, C(-786), and 4a alleles were much less common in Amerindians (5.0%, 3.2%, and 4.1%, respectively) than in blacks (15.1%, 19.5%, and 32.0%, respectively) or whites (32.8%, 41.9%, and 17.9%, respectively) (p < 0.001). The haplotype including the most common alleles for each polymorphism was much more common in Amerindians (89%) than in blacks (45%) or whites (41%). Our findings are consistent with a lower genetic diversity in Amerindians compared with blacks and whites. These striking differences may be of major relevance for case-control association studies focusing on eNOS gene polymorphisms and may explain, at least in part, differences in the responses to cardiovascular drugs.
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Affiliation(s)
- Marcelo R Luizon
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
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Robaey P, Krajinovic M, Marcoux S, Moghrabi A. Pharmacogenetics of the neurodevelopmental impact of anticancer chemotherapy. ACTA ACUST UNITED AC 2009; 14:211-20. [PMID: 18924160 DOI: 10.1002/ddrr.29] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Pharmacogenetics holds the promise of minimizing adverse neurodevelopmental outcomes of cancer patients by identifying patients at risk, enabling the individualization of treatment and the planning of close follow-up and early remediation. This review focuses first on methotrexate, a drug often implicated in neurotoxicity, especially when used in combination with brain irradiation. The second focus is on glucocorticoids that have been found to be linked to adverse developmental effects in relation with the psychosocial environment. For both examples, we review how polymorphisms of genes encoding enzymes involved in specific mechanisms of action could moderate adverse neurodevelopmental consequences, eventually through common final pathways such as oxidative stress. We discuss a multiple hit model and possible strategies required to rise to the challenge of this integrative research.
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Affiliation(s)
- Philippe Robaey
- Centre de Recherche de l'Hôpital Sainte-Justine, Université de Montréal, Montréal, Québec.
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Yemişçi M, Sinici I, Ozkara HA, Hayran M, Ay H, Celtikçi B, Onder E, Büyükşerbetci G, Kaya EB, Tokgözoglu L, Dalkara T. Protective role of 27bp repeat polymorphism in intron 4 of eNOS gene in lacunar infarction. Free Radic Res 2009; 43:272-9. [PMID: 19184759 DOI: 10.1080/10715760802691489] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Association of the three potential endothelial nitric oxide synthase gene (eNOS) polymorphisms (T-786C in promoter region, G894T in exon 7 and tandem 27-bp repeats in intron 4) with an increased risk of lacunar infarction (LI) were investigated. Genotypes of 70 patients and 81 healthy controls were determined through PCR with or without RFLP. Flow-mediated dilatation (FMD) was performed to assess endothelial-dependent vasodilatation, whereas the endothelial-independent vasodilatation was assessed with nitroglycerin (NTG). Genotype distribution was significantly different between LI patients and controls for intron 4aa (alleles for four repeats), genotype frequency being 1.4% and 16.0%, respectively (odds ratio for additive effect, 0.47; 95% CI, 0.28-0.81; p=0.006). Haplotypes with the intron 4aa polymorphism were significantly higher in controls when compared with the LI group (p=0.001). Diminished FMD but normal NTG response confirmed that patients with LI have generalized endothelial dysfunction. Intron 4aa genotype of eNOS gene seems to be protective for isolated LI and the effect was potentiated by the absence of 786C polymorphism in any allele of the promoter region.
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Affiliation(s)
- Müge Yemişçi
- Department of Neurology, Hacettepe University, Ankara, Turkey
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Cho M, Hyun KS, Chung DC, Choi IY, Kim MJ, Chang YP. eNOS Gene Polymorphisms in Perinatal Hypoxic-Ischemic Encephalopathy. KOREAN JOURNAL OF PATHOLOGY 2009. [DOI: 10.4132/koreanjpathol.2009.43.4.306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Min Cho
- Institute of Medical Science, Dankook University College of Medicine, Cheonan, Korea
| | - Kwang-Sun Hyun
- Institute of Medical Science, Dankook University College of Medicine, Cheonan, Korea
| | - David Chanwook Chung
- Department of Pediatrics, Dankook University College of Medicine, Cheonan, Korea
| | - In-Young Choi
- Department of Anatomy, Dankook University College of Medicine, Cheonan, Korea
| | - Myeung Ju Kim
- Institute of Medical Science, Dankook University College of Medicine, Cheonan, Korea
- Department of Anatomy, Dankook University College of Medicine, Cheonan, Korea
| | - Young Pyo Chang
- Department of Pediatrics, Dankook University College of Medicine, Cheonan, Korea
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eNOS T-786C polymorphism affects atorvastatin-induced changes in erythrocyte membrane fluidity. Eur J Clin Pharmacol 2008; 65:385-92. [PMID: 19104789 DOI: 10.1007/s00228-008-0602-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Accepted: 12/03/2008] [Indexed: 10/21/2022]
Abstract
PURPOSE Statins have pleiotropic effects, including endothelial nitric oxide synthase (eNOS) upregulation and increased nitric oxide formation, which can be modulated by a genetic polymorphism in the promoter region of the eNOS gene (T-786C). Here, we report our investigation of whether this polymorphism modulates the effects of atorvastatin on the fluidity of erythrocyte membranes. METHODS We genotyped 200 healthy subjects (males, 18-60 years of age) and then randomly selected 15 of these with the TT genotype and 15 with the CC genotype to receive placebo or atorvastatin (10 mg/day oral administration) for 14 days. Cell membrane fluidity was evaluated by electron paramagnetic resonance (EPR) and spin-labeling method. The EPR spectra were registered on a VARIAN-E4 spectrometer. Thiobarbituric acid-reactive species (TBA-RS) and plasma membrane cholesterol were determined in the erythrocytes. RESULTS Atorvastatin reduced membrane fluidity in CC subjects (P < 0.05) but not in those with the TT genotype (P > 0.05). While no significant differences were found in plasma membrane cholesterol concentrations, higher TBA-RS concentrations were found in the CC subjects than in the TT subjects (P < 0.05). CONCLUSIONS These findings suggest that a short treatment with atorvastatin is disadvantageous to subjects with the CC genotype for the T-786C polymorphism compared to those with TT genotype, at least in terms of the hemorheological properties of erythrocytes.
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Cheng J, Liu J, Li X, Yu L, Peng J, Zhang R, Geng Y, Nie S. Effect of polymorphisms of endothelial nitric oxide synthase on ischemic stroke: A case-control study in a Chinese population. Clin Chim Acta 2008; 392:46-51. [DOI: 10.1016/j.cca.2008.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2008] [Revised: 03/07/2008] [Accepted: 03/08/2008] [Indexed: 10/22/2022]
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Sandrim VC, Yugar-Toledo JC, Desta Z, Flockhart DA, Moreno H, Tanus-Santos JE. Endothelial nitric oxide synthase haplotypes are related to blood pressure elevation, but not to resistance to antihypertensive drug therapy. J Hypertens 2007; 24:2393-7. [PMID: 17082721 DOI: 10.1097/01.hjh.0000251899.47626.4f] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Most hypertensive patients require two or more drugs to control arterial blood pressure effectively. Although endothelial nitric oxide synthase (eNOS) haplotypes have been associated with hypertension, it is unknown whether eNOS genotypes/haplotypes are associated with resistance to antihypertensive therapy. METHODS We studied the distribution of three eNOS genetic polymorphisms: single nucleotide polymorphisms in the promoter region (T(-786)C), and in exon 7 (Glu298Asp), and a variable number of tandem repeats in intron 4 (b/a). Genotypes were determined for 111 normotensive controls (NT), 116 hypertensive individuals who were well controlled (HT), and 100 hypertensive individuals who were resistant to conventional antihypertensive therapy (RHT). We also compared the distribution of eNOS haplotypes in the three groups of subjects. RESULTS No differences were found in genotype or allele distribution among the three groups (all P > 0.05). Conversely, the 'C Glu b' haplotype was more commonly found in the NT than in the HT or RHT groups (21 versus 8 and 7%, respectively; both P < 0.00625). In addition, the 'C Asp b' haplotype was more commonly found in the HT or RHT groups than in the NT group (22 and 20%, respectively, versus 8%; both P < 0.00625). The distribution of eNOS haplotypes was not significantly different in the HT and RHT groups (P > 0.05). CONCLUSIONS Whereas our findings suggest a protective effect for the 'C Glu b' haplotype against hypertension and that the 'C Asp b' haplotype increases the susceptibility to hypertension, our results suggest that eNOS haplotypes are not associated with resistance to antihypertensive therapy.
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Affiliation(s)
- Valéria C Sandrim
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
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Attributes of Female Reproductive Aging and Their Relation to Primary Open-angle Glaucoma: A Prospective Study. J Glaucoma 2007; 16:598-605. [DOI: 10.1097/ijg.0b013e318064c82d] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Metzger IF, Sertório JTC, Tanus-Santos JE. Modulation of nitric oxide formation by endothelial nitric oxide synthase gene haplotypes. Free Radic Biol Med 2007; 43:987-92. [PMID: 17697943 DOI: 10.1016/j.freeradbiomed.2007.06.012] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2007] [Revised: 06/01/2007] [Accepted: 06/08/2007] [Indexed: 11/26/2022]
Abstract
Nitric oxide (NO) is a major regulator of the cardiovascular system. However, the effects of endothelial nitric oxide synthase (eNOS) gene polymorphisms or haplotypes on the circulating concentrations of nitrite (a sensitive marker of NO formation) and cGMP are unknown. Here we examined the effects of eNOS polymorphisms in the promoter region (T-786C), in exon 7 (Glu298Asp), and in intron 4 (4b/4a) and eNOS haplotypes on the plasma levels of nitrite and cGMP. We hypothesized that eNOS haplotypes could have a major impact on NO formation. We genotyped 142 healthy subjects by PCR-RFLP. To assess NO formation, the plasma concentrations of nitrite and cGMP were determined using an ozone-based chemiluminescence assay and an enzyme immunoassay. Haplotypes were inferred using the PHASE 2.1 program. No significant differences were found in age, body mass index, systolic and diastolic arterial blood pressure, heart rate, total cholesterol, triglycerides, cGMP, or nitrite among the genotype groups for the three polymorphisms studied here (all p>0.05). Interestingly, the C-4b-Glu haplotype was associated with lower plasma nitrite concentrations than those found in the other haplotype groups (p<0.05), but not with different cGMP levels (p>0.05). These findings suggest that eNOS gene variants combined within a specific haplotype modulate NO formation, although individual eNOS polymorphisms probably do not have major effects.
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Affiliation(s)
- Ingrid F Metzger
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
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Fergusson W. Endothelial Nitric Oxide Synthase Polymorphisms as Risk Factors for Migraine. Headache 2007; 47:1227; author reply 1227-8. [DOI: 10.1111/j.1526-4610.2007.00897.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Barbosa F, Sertorio JTC, Gerlach RF, Tanus-Santos JE. Clinical evidence for lead-induced inhibition of nitric oxide formation. Arch Toxicol 2007; 80:811-6. [PMID: 16670857 DOI: 10.1007/s00204-006-0111-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2006] [Accepted: 04/12/2006] [Indexed: 11/25/2022]
Abstract
Lead exposure has been associated with increased cardiovascular risk, which may result, at least in part, from lead-induced increases in oxidative stress and depressed nitric oxide (NO) availability. However, no previous clinical study has examined whether lead exposure is associated with significant effects on biomarkers of NO activity (plasma nitrites, nitrates, and cyclic guanosine 3',5'-monophosphate; cGMP). We investigated whether there is an association between the circulating concentrations of nitrites, nitrates, and cGMP and the concentrations of lead in whole blood (B-Pb) or plasma (P-Pb) from 62 lead-exposed subjects (30 men and 32 women). P-Pb was determined by inductively coupled plasma mass spectrometry and B-Pb by graphite furnace atomic absorption spectrometry. Plasma nitrite and nitrate concentrations were measured using an ozone-based chemiluminescence assay. Plasma cGMP concentrations were measured using a commercial enzyme immunoassay. We found a negative correlation between plasma nitrite and B-Pb concentrations (r = -0.358; P = 0.004), and between plasma nitrite and P-Pb concentrations (r = -0.264; P = 0.038), thus suggesting increased inhibition of NO formation with increasing B-Pb or P-Pb concentrations. However, no significant correlations were found between plasma nitrate or cGMP and B-Pb or P-Pb concentrations (all P > 0.05). These findings suggest a significant inhibitory effect of lead exposure on NO formation and provide clinical evidence for a biological mechanism possibly involved the association between lead exposure and increased cardiovascular risk.
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Affiliation(s)
- Fernando Barbosa
- Department of Clinical, Toxicological and Food Science Analysis, Faculty of Pharmaceutical Sciences of Ribeirao Preto, Av. do Cafe, s/n, 14040-903 Ribeirao Preto, SP, Brazil
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47
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Abstract
1. Adverse thrombotic cardiovascular events increase in women coincident with the onset of menopause. 2. Age past menopause may be an important variable in defining the benefit/risk of hormone treatments. 3. Few studies have examined hormonal status as a variable of ageing using a polygenomic approach of both humoral and cellular components of the coagulation system. 4. Longitudinal studies of a global set of platelet functions that define procoagulant activity (i.e. adhesion, aggregation, secretion and thrombin production) in individuals with documented hormonal status are needed to better understand how hormonal changes associated with ageing impact thrombotic risk.
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Affiliation(s)
- Virginia M Miller
- Department of Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA.
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48
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Lee KM, Choi JY, Lee JE, Noh DY, Ahn SH, Han W, Yoo KY, Hayes RB, Kang D. Genetic polymorphisms of NOS3 are associated with the risk of invasive breast cancer with lymph node involvement. Breast Cancer Res Treat 2007; 106:433-8. [PMID: 17262178 DOI: 10.1007/s10549-007-9506-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2006] [Accepted: 01/01/2007] [Indexed: 11/25/2022]
Abstract
Endothelial nitric oxide synthase (NOS3) produces nitric oxide which is a mediator of cytotoxic effects potentially associated with breast cancer. We evaluated the role of genetic polymorphisms of NOS3 in breast cancer etiology, in a case-control study conducted in Korea. We recruited 1,385 eligible patients with histologically confirmed incident breast cancer cases and 968 hospital-based controls. Two potentially functional NOS3 polymorphisms in the promoter region (-786T > C) and exon 7 (894G > T, Glu298Asp) were genotyped and individual haplotypes were estimated. Odds ratios (ORs) and 95% confidential intervals (95% CIs) were calculated by unconditional logistic regression, adjusting for age, body mass index, education, family history of breast cancer in first and second degree relatives, age at first full-term pregnancy and parity. There was no overall association between the -786T > C or 894G > T genotype and breast cancer risk. However, the -786C allele was marginally associated with decreased risk for invasive breast cancer with lymph node involvement (OR = 0.76, 95% CI = 0.56-1.04). And, compared to TG-TG carriers, all other haplotype pairs were significantly associated with invasive breast cancer with lymph node involvement (OR = 0.77, 95% CI = 0.59-0.99). Our results suggest that genetic polymorphisms in NOS3 modify individual susceptibility to invasive breast cancer with lymph node involvement in Korean women.
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Affiliation(s)
- Kyoung-Mu Lee
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
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Sandrim VC, de Syllos RWC, Lisboa HRK, Tres GS, Tanus-Santos JE. Influence of eNOS haplotypes on the plasma nitric oxide products concentrations in hypertensive and type 2 diabetes mellitus patients. Nitric Oxide 2007; 16:348-55. [PMID: 17306574 DOI: 10.1016/j.niox.2006.12.007] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2006] [Revised: 12/13/2006] [Accepted: 12/14/2006] [Indexed: 11/24/2022]
Abstract
Endothelial nitric oxide synthase (eNOS) haplotypes are associated with hypertension (HT) in patients with or without type 2 diabetes mellitus (T2DM). We evaluated the association of eNOS genotypes/haplotypes with the plasma concentrations of nitrite/nitrate (NO(x)), which are products of nitric oxide in HT, T2DM, and T2DM+HT patients. We studied eNOS polymorphisms in the promoter region (T-786C), in exon 7 (Glu298Asp), and in intron 4 (b/a) in 98 controls, 68 patients with HT, 66 patients with T2DM, and 86 patients with T2DM+HT. NO(x) concentrations were assessed using a chemiluminescence assay. No differences were found in genotype/allele distribution among groups. Genotypes were not associated with NO(x) concentrations. The "C-Glu-b" haplotype was more common in controls than in HT/T2DM+HT groups (21% versus 9/5%, respectively, P<0.006). This haplotype was more common in HT and T2DM+HT groups among subjects with high (82+/-38 and 90+/-33 microM, respectively) than with low (35+/-7 and 34+/-7 microM, respectively) NO(x) concentrations. Conversely, the "C-Asp-b" haplotype was more common in HT/T2DM+HT groups than healthy (21/21% versus 10%, respectively, P<0.006). The haplotype associated with lower risk of developing hypertension is also associated with higher NO(x) levels among hypertensives. Conversely, the haplotype increasing the risk of developing hypertension is associated with lower NO(x) levels in hypertensives.
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Affiliation(s)
- Valeria C Sandrim
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
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de Syllos RWC, Sandrim VC, Lisboa HRK, Tres GS, Tanus-Santos JE. Endothelial nitric oxide synthase genotype and haplotype are not associated with diabetic retinopathy in diabetes type 2 patients. Nitric Oxide 2006; 15:417-22. [PMID: 16581274 DOI: 10.1016/j.niox.2006.02.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Accepted: 02/20/2006] [Indexed: 11/24/2022]
Abstract
Polymorphisms in the endothelial nitric oxide synthase (eNOS) gene have been associated with the development of diabetic retinopathy (DR) in patients with type 1 diabetes mellitus (T1DM), but not with T2DM. However, no previous study has analyzed combinations of genetic markers (haplotypes), which can be more informative. We studied three eNOS genetic polymorphisms: a single nucleotide polymorphism in the promoter region (T(-786)C), in exon 7 (Glu298Asp), and a variable number of tandem repeats in intron 4 (b/a) in 103 healthy controls, and in 170 patients with T2DM (without DR, N=114; with DR, N=56). We also examined the association of eNOS gene haplotypes with T2DM and with DR. No differences were found in the frequencies of genotypes and alleles of the three polymorphisms among the three groups of subjects. However, the "C-Glu-b" haplotype was more common in healthy controls (24%) than in T2DM patients (7%) (P=0.0001). Finally, no significant difference in the distribution of eNOS haplotypes frequencies was found when T2DM patients with or without DR were compared (P=0.7372). These findings suggest no association between DR and individual eNOS haplotypes in T2DM patients. The "C-Glu-b" haplotype, however, may have a protective effect against T2DM. Further studies should be conducted to address the molecular basis for such an effect.
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Affiliation(s)
- Roger W C de Syllos
- Department of Pharmacology, State University of Campinas, 13081-970, Campinas, Sao Paulo, Brazil
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