1
|
The association of an alpha2C adrenoreceptor gene polymorphism with vasomotor symptoms in African American women. Menopause 2018; 26:300-305. [PMID: 30277919 DOI: 10.1097/gme.0000000000001218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The alpha2C adrenoreceptor deletion 322-325 (ADRA2C del 322-325) polymorphism has been associated with autonomic activity and thermoregulation, which are implicated in the vasomotor symptom (VMS) mechanism. The ADRA2C del (322-325) has higher prevalence in African American women, a group known to experience more frequent and bothersome VMS. We assessed whether the ADRA2C del (322-325) genotype is associated with increased frequency of VMS in African American women. METHODS DNA samples from African American (N = 400) women participating in the Study of Women's Health Across the Nation (SWAN) were genotyped for the ADRA2C del (322-325) polymorphism. Longitudinal data on VMS were obtained from the SWAN repository. The relation of ADRA2C del (322-325) genotypes (deletion/deletion [D/D]; insertion/deletion [I/D]; insertion/insertion [I/I]) with VMS over the menopausal transition for up to 12 years of follow-up was examined using generalized estimating equations. Primary models considered the outcome of frequent VMS (6 or more days in the prior 2 wk vs VMS <6 d in the prior 2 wk) by stage of menopause. RESULTS Four hundred DNA samples from African American women were included. Seventy-five women (18.8%) were found to carry the homozygous variant allele (D/D). There was no significant difference in the trajectory of frequent VMS over the menopausal transition between women with D/D and I/I + I/D genotypes (P = 0.39). CONCLUSIONS In this preliminary study among African American women in SWAN, ADRA2C del (322-325) was not significantly related to self-reported VMS. Further studies are warranted to help us understand the role of the adrenergic system in the physiology of VMS to tailor medical therapy to patient needs.
Collapse
|
2
|
Wang L, Hou L, Li H, Chen J, Kelly TN, Jaquish CE, Rao DC, Hixson JE, Hu D, Chen CS, Gu CC, Chen S, Lu X, Whelton PK, He J, Lu F, Huang J, Liu DP, Gu D. Genetic variants in the renin-angiotensin system and blood pressure reactions to the cold pressor test. J Hypertens 2010; 28:2422-8. [PMID: 20811292 PMCID: PMC3029492 DOI: 10.1097/hjh.0b013e32833ea74e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES The purpose of this study was to examine the association between genetic variants in the renin-angiotensin system and blood pressure (BP) responses to the cold pressor test (CPT). METHODS The CPT was conducted among 1998 Han Chinese participants. BP measurements were obtained before and after the CPT using a standard sphygmomanometer according to a standard protocol. The association between SNP genotypes and BP responses to the CPT was assessed using a mixed linear model. RESULTS Of 68 SNPs genotyped in six renin-angiotensin system genes, two were strongly associated with DBP responses to CPT (P ≤ 0.001; false discovery rate q value < 0.05): rs2006765 and rs943580 in the angiotensinogen (AGT) gene. Compared to C allele carriers of rs2006765, the TT homozygotes had a significantly decreased DBP response to the CPT. For participants with the TT genotype, percentage DBP responses were 5.68% (4.25-7.10%), compared to corresponding responses of 9.17% (8.66-9.68%) among participants with the CC+CT genotype. In addition, SNP rs4681443 of the angiotensin type 1 receptor (AGTR1) gene was significantly associated with percentage SBP responses to CPT (P ≤ 0.001; q-value <0.05). CONCLUSION Briefly, our study identified variants in the AGT and AGTR1 genes that may influence BP responses to CPT in the Han Chinese population. These results show that genetic variants in the renin-angiotensin system play an important role in BP responses to CPT and, therefore, in predicting future hypertension.
Collapse
Affiliation(s)
- Laiyuan Wang
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Chinese National Human Genome Center at Beijing
| | - Liping Hou
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongfan Li
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Chen
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA
| | - Tanika N. Kelly
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - Cashell E. Jaquish
- National Heart, Lung, and Blood Institute, National Institute of Health, Bethesda, MD
| | - Dabeeru C. Rao
- Washington University in St. Louis School of Medicine, St. Louis, MO
| | | | - Dongsheng Hu
- Zhengzhou University School of Public Health, Zhengzhou, Henan, China
| | - Chung-Shiuan Chen
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - C. Charles Gu
- Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Shufeng Chen
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiangfeng Lu
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | | - Jiang He
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA
| | - Fanghong Lu
- Shandong Academy of Medical Sciences, Shandong, China
| | - Jianfeng Huang
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - De-Pei Liu
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dongfeng Gu
- Department of Evidence Based Medicine and Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | |
Collapse
|
3
|
Effects of variation in the human alpha2A- and alpha2C-adrenoceptor genes on cognitive tasks and pain perception. Eur J Pain 2009; 14:154-9. [PMID: 19423370 DOI: 10.1016/j.ejpain.2009.04.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 03/29/2009] [Accepted: 04/04/2009] [Indexed: 12/26/2022]
Abstract
BACKGROUND The mechanisms underlying interindividual variability in pain perception and cognitive responses are undefined but highly heritable. alpha(2C)- and alpha(2A)-adrenergic receptors regulate noradrenergic activity and are important mediators of pain perception and analgesia. We hypothesized that common genetic variants in these genes, particularly the ADRA2C 322-325 deletion variant, affect pain perception or cognitive responses. METHODS We studied 73 healthy subjects (37 Caucasians and 36 African-Americans) aged 25.4+/-4.6years. Pain response to a cold pressor test was measured using a 10cm visual analog scale and again on the next day, after three infusions of the selective alpha(2)-agonist dexmedetomidine. Standardized cognitive tests were administered at baseline and after each infusion. The contribution of ADRA2C deletion genotype, dexmedetomidine concentration, and other covariates to pain perception and cognitive responses was determined using multiple linear regression models. Secondary analysis examined the effects of ADRA2A and other ADRA2C variants on pain perception. RESULTS ADRA2C Del homozygotes had higher pain scores in response to cold at baseline (6.3+/-1.8cm) and after dexmedetomidine (5.6+/-2.2cm) than insertion allele carriers (4.6+/-2.1cm [baseline] and 3.8+/-1.9cm [after dexmedetomidine]; adjusted P-values=0.019 and 0.004, respectively). Cognitive responses were unrelated to ADRA2C Ins/Del genotype. None of the other ADRA2A and ADRA2C variants was significantly related to cold pain sensitivity before dexmedetomidine; after dexmedetomidine, ADRA2A rs1800038 was marginally associated (P=0.03). CONCLUSION The common ADRA2C del322-325 variant affected pain perception before and after dexmedetomidine but did not affect other cognitive responses, suggesting that it contributes to interindividual variability in pain perception.
Collapse
|