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Nath M, Swarnkar P, Misra S, Kumar P. Phosphodiesterase 4 D (PDE4D) gene polymorphisms and risk of ischemic stroke: A systematic review and meta-analysis. Acta Neurol Belg 2023; 123:2085-2110. [PMID: 36862303 DOI: 10.1007/s13760-023-02218-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 02/16/2023] [Indexed: 03/03/2023]
Abstract
BACKGROUND AND PURPOSE Studies on the relationship between Phosphodiesterase 4 D (PDE4D) gene polymorphism with the risk of ischemic stroke (IS) have shown discordant results. The present meta-analysis was aimed to clarify the relationship between PDE4D gene polymorphism with the risk of IS by estimating pooled analysis of published epidemiological studies. METHODS A comprehensive literature search for all the published articles was performed in various electronic databases, including PubMed, EMbase, Cochrane Library, Trip Database, Worldwide Science, CINAHL, and Google Scholar up to 22nd December 2021. Pooled Odds ratios (ORs) with 95% Confidence Intervals (CIs) under dominant, recessive, and allelic models were calculated. Subgroup analysis based on ethnicity (Caucasian vs. Asian) was performed to examine the reliability of these findings. Sensitivity analysis was also performed to detect the heterogeneity between studies. Finally, Begg's funnel plot was used to assess the potential for publication bias. RESULTS In our meta-analysis, we identified a total of 47 case-control studies with 20,644 ischemic stroke (IS) cases and 23,201 control subjects, including 17 studies of Caucasian descent and 30 studies of Asian descent. Our findings suggest that there was a significant relationship between SNP45 gene polymorphism and risk of IS (Recessive model: OR = 2.06, 95% CI 1.31-3.23), SNP83 overall (allelic model: OR = 1.22, 95% CI 1.04-1.42), Asian (allelic model: OR = 1.20, 95% CI 1.05-1.37), and SNP89 Asian (Dominant model: OR = 1.43, 95% CI 1.29-1.59, recessive model: OR = 1.42, 95% CI 1.28-1.58) respectively. However, no significant relationship was found between SNP32, SNP41, SNP26, SNP56, and SNP87 gene polymorphisms and risk of IS. CONCLUSION Findings of this meta-analysis conclude that SNP45, SNP83, and SNP89 polymorphism could be capable of increasing stroke susceptibility in Asians but not in the Caucasian population. Genotyping of SNP 45, 83, 89 polymorphisms may be used as a predictor for the occurrence of IS.
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Affiliation(s)
- Manabesh Nath
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Priyanka Swarnkar
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Shubham Misra
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India
- Department of Neurology, Yale University School of Medicine, New Heaven, USA
| | - Pradeep Kumar
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India.
- Clinical Research Unit, All India Institute of Medical Sciences, New Delhi, India.
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Wang C, Zhang F, Zhang X, Zhang C, Li H. Association between PDE4D rs966221 and the Risk of Ischemic Stroke in Regional Chinese Populations. Brain Sci 2023; 13:1038. [PMID: 37508970 PMCID: PMC10377348 DOI: 10.3390/brainsci13071038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
In published research that includes genome-wide association studies and meta-analyses, the phosphodiesterase 4D (PDE4D) rs966221 variant has been identified as a risk factor in ischemic stroke (IS) in the Caucasian population. Several studies have investigated the relationship between rs966221 and IS susceptibility in Chinese populations over the years but have not provided consistently conclusive results. Therefore, our team performed a new meta-analysis of 5973 IS patients and 6204 controls from qualified studies. We observed no significant link between the PDE4D rs966221 variant and IS in any of the regional Chinese populations. Thus, we performed a subgroup analysis by the geographical distribution of China. Notably, significant associations were observed between rs96622 and the susceptibility of IS in the Northeast Chinese populations (p = 1.00 × 10-4, odds ratio = 1.28, and 95% confidence interval = 1.13-1.44, I2 = 0%). However, rs966221 was not found to be correlated with IS risk in the populations of North, Central, South, and East China. Our meta-analysis demonstrated that the PDE4D rs966221 variant is significantly associated with IS risk in some regional Chinese populations.
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Affiliation(s)
- Chunyang Wang
- Department of Scientific Research, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Fenghe Zhang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Xiaojing Zhang
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin 301700, China
| | - Chao Zhang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - He Li
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
- Tianjin Key Laboratory of Cerebrovascular and of Neurodegenerative Diseases, Department of Neurology, Tianjin Huanhu Hospital, Tianjin 300350, China
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Xu C, Qin J, Yu J, Sun Y, Hu D, Wu G, Li Y. Association of plaque enhancement on vessel wall MRI and the phosphodiesterase 4D variant with stroke recurrence in patients with symptomatic intracranial atherosclerosis. Neuroradiology 2022; 64:1781-1794. [PMID: 35420310 DOI: 10.1007/s00234-022-02948-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 04/06/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Vessel wall MRI (VW-MRI) can be used to evaluate the nature of intracranial atherosclerosis (ICAS) plaque in vivo. Phosphodiesterase 4D (PDE4D) participates in stroke development. This study aims to explore the value of VW-MRI findings and the PDE4D gene variant in predicting stroke recurrence in patients with ICAS. METHODS We prospectively recruited 324 symptomatic ICAS patients. VW-MRI was performed to determine luminal and wall changes. PDE4D gene single-nucleotide polymorphisms (SNPs)-namely, SNP32, SNP83, and SNP87-were determined by direct sequencing. The risk factors of stroke recurrence were analyzed using the multivariate Cox proportional hazards model. RESULTS Of the 324 subjects, 97 (29.9%) experienced recurrent ischemic stroke during the follow-up period. A total of 254 patients (78.4%) showed plaque enhancement; 87 of these patients experienced stroke recurrence. The CT/CC genotype frequencies of PDE4D83 were significantly higher in participants with recurrent stroke than in patients without stroke recurrence (p = 0.019 and p < 0.001, respectively). However, the PDE4D32 and PDE4D87 variants were not correlated with recurrent stroke. Multivariate analysis showed that plaque enhancement from VW-MRI (HR 4.52, 95% CI 2.35-8.73, p < 0.001) and the PDE4D83 variant (HR 7.43, 95% CI 1.75-31.87, p = 0.005) were independently correlated with stroke recurrence. Kaplan-Meier curves showed significant differences in stroke recurrence rates between the plaque-enhanced group and the non-enhanced group (p < 0.001) and between the PDE4D83 variant carriers and noncarriers (p = 0.002). CONCLUSION Plaque enhancement on VW-MRI and the presence of the PDE4D83 variant are associated with ischemic stroke recurrence in subjects with symptomatic ICAS.
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Affiliation(s)
- Chuanhui Xu
- Department of Radiology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, 1158 Gongyuan East Road, Qingpu District, Shanghai, 201700, China
| | - Jun Qin
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - Jinhui Yu
- Department of Radiology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, 1158 Gongyuan East Road, Qingpu District, Shanghai, 201700, China
| | - Yan Sun
- Department of Radiology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, 1158 Gongyuan East Road, Qingpu District, Shanghai, 201700, China
| | - Dongmin Hu
- Department of Radiology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, 1158 Gongyuan East Road, Qingpu District, Shanghai, 201700, China
| | - Gang Wu
- Department of Radiology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, 1158 Gongyuan East Road, Qingpu District, Shanghai, 201700, China
| | - Yang Li
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China.
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Phytochemical Analysis and In Vitro and In Vivo Pharmacological Evaluation of Parthenium hysterophorus Linn. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6088585. [PMID: 35754691 PMCID: PMC9232325 DOI: 10.1155/2022/6088585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/27/2022] [Indexed: 11/30/2022]
Abstract
The main aim of this research was to explore Parthenium hysterophorus Linn phytochemically and pharmacologically. Phytochemical screening is important for the isolation of active compounds before bulk extraction. The crude extracts and their fractions were screened for enzyme (urease, α-glycosidase, and phosphodiesterase) inhibition assays, in vivo analgesic, anti-inflammatory, and sedative effects. Results indicated the presence of steroids, flavonoids, etc. The crude extracts such as methanol, hexane, aqueous, ethyl acetate, chloroform, and butanol exhibited excellent urease inhibitory activities with IC50 = 43.1 ± 1.24, 31.9 ± 2.21, 31.9 ± 2.21, 57.3 ± 1.27, 49.2 ± 2.16, and 35.3 ± 1.12, respectively, as compared to standard acetohydroxamic acid (20.3 ± 0.43). The extracts (methanol, hexane, aqueous, ethyl acetate, chloroform, and butanol) also showed promising α-glycosidase potency with IC50 = 13.1 ± 0.34, 21.2 ± 1.16, 23.1 ± 0.12, 84.2 ± 2.17, 118.6 ± 3.07, and 840 ± 1.73, respectively against acarbose (840 ± 1.73). The phosphodiesterase activity of the mentioned extracts was also excellent with IC50 = 131.1 ± 2.41, 197.2 ± 3.16, 24.2 ± 0.11, 62.4 ± 2.21, 152.4 ± 1.81, and 55.3 ± 2.15, respectively, against the standard (265.5 ± 2.25). Furthermore, butanol (14.96 ± 1.78), ethyl acetate (18.98 ± 1.71), and methanol (16.87 ± 1.00) showed dose-dependent analgesic effects with a maximum inhibition of acetic acid-induced writhes. Whereas, methanolic and butanol extracts exhibited maximum inhibition of inflammation in the carrageenan paw edema test. The aqueous (p < 0.01) and butanol (p < 0.01) extracts exhibited maximum a sedative effect followed by chloroform (p < 0.05), ethyl acetate (p < 0.05), and methanolic (p < 0.05) fractions as compared to the standard drug. The current research concluded that Parthenium hysterophorus Linn has important phytochemical constituents having inhibitory effects on urease, α-glycosidase, and phosphodiesterase enzymes. Furthermore, the plant has analgesic, anti-inflammatory, and sedative effects. The P. hysterophorus needs to further be explored for the candidate molecules responsible for the abovementioned activities.
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Mansoor F, Kumar J, Kaur N, Sultan S, Tahir H, Dilip A, Khan F, Kumar N, Khalid H, Talpur AS. Frequency of Electrolyte Imbalance in Patients Presenting With Acute Stroke. Cureus 2021; 13:e18307. [PMID: 34725581 PMCID: PMC8553280 DOI: 10.7759/cureus.18307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2021] [Indexed: 11/05/2022] Open
Abstract
Introduction Electrolyte disturbances are commonly reported in acute stroke in studies conducted in the western world. Presently, the data available about the prevalence of electrolyte disturbance in patients with stroke are not sufficient, especially from developing countries. The purpose of our study is to determine the frequency of occurrence of electrolyte imbalance in patients presenting with acute stroke in a tertiary care hospital. Methods This descriptive cross-sectional study was conducted in the department of internal medicine and neurology in a tertiary care hospital, Pakistan, from December 2019 to March 2021. A total of 300 patients, aged between 30 and 70 years, with either ischemic or hemorrhagic stroke, as diagnosed on contrast tomography (CT) scan of the head or magnetic resonance imaging (MRI) of the brain, were enrolled in the study. The biochemical analysis of the stroke patients was done. Results Out of the 300 participants, 139 (46.3%) participants were from the ischemic stroke group while 161 (53.7%) were from the hemorrhagic stroke group. The mean sodium level was significantly lower in the ischemic group as compared to the hemorrhagic group (129.41 ± 3.12 mEq/L vs. 134.42 ± 3.46 mEq/L; p-value: <0.0001). Potassium level was significantly higher in the hemorrhagic group compared to the ischemic group (6.27 ± 1.12 mmol vs. 4.31 ± 0.71 mmol; p-value: <0.0001). Conclusion Patients coming to emergency with stroke should be screened immediately for electrolyte imbalance. Early identification of rapid imbalances of serum electrolytes may aid in prompt medical intervention and resultant improved outcomes in stroke patients. It is crucial that electrolyte imbalances in these patients are closely monitored to avoid any complications.
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Affiliation(s)
- Farah Mansoor
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Jitesh Kumar
- Internal Medicine, Ghulam Muhammad Mahar Medical College, Sukkur, PAK
| | - Navneet Kaur
- Internal Medicine, Adesh Institute of Medical Sciences and Research, Buchu Kalan, IND
| | - Sandresh Sultan
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Hamza Tahir
- Internal Medicine, Allama Iqbal Medical College, Lahore, PAK
| | - Anum Dilip
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Faryal Khan
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Narindar Kumar
- Internal Medicine, Bhitai Dental and Medical College, Mirpur Khas, PAK
| | - Haya Khalid
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Abdul Subhan Talpur
- Internal Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, PAK
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Bilyi DO, Nastina OM, Sydorenko GV, Bilous NI, Kursina NV, Pleskach GV, Bazyka OD, Makarevysh OM, Kovaliov OS, Chumak AA, Abramenko IV. GENDER DISPARITIES OF CIRCULATORY DISEASE PROGRESS IN THE CHORNOBYL ACCIDENT CLEAN-UP WORKERS AND PHOSPHODIESTERASE 4D GENE rs966221 POLYMORPHISM. PROBLEMY RADIAT︠S︡IĬNOÏ MEDYT︠S︡YNY TA RADIOBIOLOHIÏ 2018; 23:263-282. [PMID: 30582852 DOI: 10.33145/2304-8336-2018-23-263-282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Evaluation of the hypertensive disease (HD) and coronary heart disease (CHD) progress in the ChornobylNPP (ChNPP) accident clean-up workers (ACUW) and persons not exposed to ionizing radiation depending on gen-der and genotype of the phosphodiesterase 4D (PDE4D) gene rs966221 polymorphism. MATERIALS AND METHODS There were male ACUW (ACUWm; n=515) and female ACUW (ACUWf; n=145) involved in thestudy since 2013 till 2018. Participation in the clean-up works took place in 1986-1987. The control group includ-ed male (CGm; n=162) and female (CGf; n=120) persons not exposed to ionizing radiation. All study subjects havehad neither signs nor symptoms of HD or CHD before the ChNPP accident. RESULTS Review of the Kaplan-Meier survival tables indicated that according to median survival the HD emerged inACUWm and ACUWf in a younger age (47.5 ± 0.6 and 50.7 ± 0.7 years old, respectively) vs. CGm or CGf (54.9 ± 1.1 and54.4 ± 1.1 years, respectively). The same was true for CHD where the median values were (56.8 ± 0.5), (61.2 ± 0.8),(61.6 ± 1.0) and (64.2 ± 1.4) years respectively. Review of cumulative incidence of HD and CHD revealed no associ-ation of the PDE4D gene rs966221 polymorphism with the diseases of concern. The TT gene carrier state comparedto the CC or CT genes features an increased risk of myocardial infarction (MI) 2.9 times in ACUWm, 4-fold in CGm, and5.5 times in CGf (p < 0.05). No any gene carrier state was associated with MI in the ACUWf. Onset of menopause wasfollowed by an increase in HD incidence vs. males. CONCLUSIONS The male and female ChNPP ACUW were developing HD and CAD at a younger age compared with cor-responding non-irradiated control. In male ACUW in comparison with female ACUW the cumulative morbidity ratefor MI was higher in any age range, whereas for CAD it was higher from 23 to 74 years, and for HD from 25 to 53 yearsof age. In male and female ACUW as well as in non-irradiated control the HD developed much earlier than CHD. Thecarrier state of TT genotype of PDE4D gene rs966221 polymorphism increases the risk of MI in males of all ages, inthe non-irradiated controls it is increased in 65 years for men and in 60 years for women. No data on association ofthe genotype of the described gene polymorphism with MI were found in female ACUW.
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Affiliation(s)
- D O Bilyi
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - O M Nastina
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - G V Sydorenko
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - N I Bilous
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - N V Kursina
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - G V Pleskach
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - O D Bazyka
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - O M Makarevysh
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - O S Kovaliov
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - A A Chumak
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
| | - I V Abramenko
- State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine», 53 Melnykova str., Kyiv, 04050, Ukraine
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Wang P, Yang F, Liu CX, Wu YM, Gu C, Zhu HJ. Association between PDE4D rs966221 polymorphism and risk of ischemic stroke: a systematic review and meta-analysis. Metab Brain Dis 2018; 33:637-645. [PMID: 29234926 DOI: 10.1007/s11011-017-0158-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 11/20/2017] [Indexed: 01/04/2023]
Abstract
PDE4D polymorphism (SNP83/rs966221) was reported to be associated with the susceptibility to ischemic stroke (IS), however, the results were inconclusive. An electronic search of Embase, PubMed, CNKI and Wan Fang Date was performed to identify relevant studies published throughout April 2017. A total of 26 studies were enrolled in the analysis. No significant association between the rs9662221 polymorphism and IS was observed in the overall analysis. Nevertheless, in the subgroup analysis, our results showed a significant association between the SNP83 polymorphism and IS in CC+ CT vs. TT (OR = 1.19, 95% CI: 1.02-1.38), CT vs.TT (OR = 1.14, 95% CI: 1.01-1.29) and C vs. T (OR = 1.25, 95% CI: 1.06-1.48) in Asian population. But we did not found any association in CC vs. CT + TT (OR = 1.2, 95% CI: 0.9-1.61) and CC vs. TT (OR = 1.26, 95% CI: 0.91-1.75) in the Asian populations. Meantime, no significant correlations were observed under the five genetic model in Caucasian population (p > 0.05). In conclusion, our meta-analysis demonstrated that the SNP83 polymorphism in the PDE4D gene might contribute to IS susceptibility especially in Asian populations. Whereas the relationship of the polymorphism to the disease in Caucasian population was still in controversial. In future, additional well designed studies with larger sample sizes are still required to further elucidate this association.
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Affiliation(s)
- Peng Wang
- Intervertional Radiology and Vascular Department, The Third Affiliated Hospital of Nantong University, Wuxi, Jiang Su, 214041, China
| | - Fei Yang
- Intervertional Radiology and Vascular Department, The Third Affiliated Hospital of Nantong University, Wuxi, Jiang Su, 214041, China
| | - Cai Xiang Liu
- Nephrology Department, Wuxi Hospital of Traditional Chinese Medicine, Wuxi, Jiang Su, 214071, China.
| | - Yan Min Wu
- Gastroenterology Department, The Third Affiliated Hospital of Nantong University, Wuxi, Jiang Su, 214041, China
| | - Chen Gu
- Intervertional Radiology and Vascular Department, The Third Affiliated Hospital of Nantong University, Wuxi, Jiang Su, 214041, China
| | - Hua Jian Zhu
- Surgery of Traditional Chinese Medicine, The Third Affiliated Hospital of Nantong University, Wuxi, Jiang Su, 214041, China
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Li A, Shi Y, Xu L, Zhang Y, Zhao H, Li Q, Zhao X, Cao X, Zheng H, He Y. A possible synergistic effect of MTHFR C677T polymorphism on homocysteine level variations increased risk for ischemic stroke. Medicine (Baltimore) 2017; 96:e9300. [PMID: 29390494 PMCID: PMC5758196 DOI: 10.1097/md.0000000000009300] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Homocysteine (Hcy) plays an important role in vascular function and Hcy level contributes to pathogenesis of ischemic stroke (IS). MTHFR gene polymorphism may have effects on IS risks by influencing the Hcy metabolic pathway. In the present study, a case-control study was designed to evaluate the relationship among MTHFR C677Tpolymorphism, plasma Hcy level, and susceptibility of IS in Chinese population. METHODS A total of 300 patients with IS and 261 matched control subjects were recruited. Plasma Hcy concentration was determined using enzymatic cycling assay. MTHFR C677T polymorphisms were genotyped by PCR-RFLP. RESULTS Compared with controls, the plasma Hcy level was significantly higher in the IS patients (P < .05). After adjusting for conventional risk factors, the T allele frequency of MTHFR C677T in IS group (54%) was significantly higher than that in the controls (38.3%) (P < .05; OR = 1.890, 95% CI: 1.489-2.399). Additionally, the plasma Hcy level of the TT genotype is significantly higher than that of the CC and CT genotypes (P < .05). CONCLUSION Our study provided evidence that hyperhomocysteinemia (HHcy) and MTHFR C677T polymorphism were associated with IS. More importantly, suggesting that a possible synergistic effect of MTHFR C677T polymorphism on Hcy level variations increased risk for IS in Chinese population.
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Affiliation(s)
- Aifan Li
- Department of Neurology, The First People's Hospital of Zhengzhou
| | - Yunshu Shi
- Department of Oncology, the First Affiliated Hospital
| | - Liyan Xu
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University
| | - Yuchao Zhang
- Department of Eugenic Genetics, The First People's Hospital of Zhengzhou
| | - Huiling Zhao
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University
| | - Qiangmin Li
- Department of Neurology, The First People's Hospital of Zhengzhou
| | - Xingjuan Zhao
- Department of Neurology, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Xinhui Cao
- Department of Neurology, The First People's Hospital of Zhengzhou
| | - Hong Zheng
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University
| | - Ying He
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University
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Kumar A, Misra S, Kumar P, Sagar R, Gulati A, Prasad K. Relationship of phosphodiesterase 4D (PDE4D) gene polymorphisms with risk of ischemic stroke: a hospital based case-control study. Neurol Res 2017; 39:689-694. [PMID: 28562233 DOI: 10.1080/01616412.2017.1333975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Stroke remains a leading cause of death and disability worldwide. Ischemic stroke (IS) accounts for around 80-85% of total stroke and is a complex polygenic multi-factorial disorder which is affected by a complex combination of vascular, environmental, and genetic factors. OBJECTIVE The study was conducted with an aim to examine the relationship of single nucleotide polymorphisms (SNPs) of PDE4D (T83C, C87T, and C45T) gene with increasing risk of IS in patients in North Indian population. METHODS In this hospital-based case-control study, 250 IS subjects and 250 age-and sex-matched control subjects were enrolled from the Neurosciences Centre, A.I.I.M.S., New Delhi, India. Deoxyribonucleic acids (DNAs) were extracted using the conventional Phenol-Chloroform isolation method. Different genotypes were determined by Polymerase chain reaction- Restriction fragment length polymorphism method. Odds ratio (OR) and 95% Confidence Interval (CI) of relationship of polymorphisms with risk of IS were calculated by conditional multivariable regression analysis. RESULTS High blood pressure, low socioeconomic status, dyslipidemia, diabetes, and family history of stroke were observed to be statistically significant risk factors for IS. Multivariable adjusted analysis demonstrated a statistically significant relationship between SNP 83 of PDE4D gene polymorphism and increasing odds of IS under the dominant model of inheritance (OR, 1.59; 95% CI, 1.02 to 2.50; p value = 0.04) after adjustment of potential confounding variables. Stratified analysis on the basis of TOAST classification demonstrated a statistically significant association for increasing 2.73 times odds for developing large vessel disease stroke as compared to controls (OR, 2.73; 95% CI, 1.16 to 0.02; p value = 0.02). We did not find any significant association of SNPs (C87T and C45T) of the PDE4D gene with the risk of IS. CONCLUSION SNP 83 of PDE4D gene may increase the risk for developing IS whereas SNP 87 and SNP45 of PDE4D may not be associated with the risk of IS in the North Indian population. Prospective cohort studies are required to corroborate these findings.
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Affiliation(s)
- Amit Kumar
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
| | - Shubham Misra
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
| | - Pradeep Kumar
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
| | - Ram Sagar
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
| | - Arti Gulati
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
| | - Kameshwar Prasad
- a Department of Neurology , All India Institute of Medical Sciences , New Delhi , India
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Munshi A, Das S. Genetic Understanding of Stroke Treatment: Potential Role for Phosphodiesterase Inhibitors. ADVANCES IN NEUROBIOLOGY 2017; 17:445-461. [PMID: 28956342 DOI: 10.1007/978-3-319-58811-7_16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phosphodiesterase (PDE) gene family is a large family having at least 21 genes and multiple versions (isoforms) of the phosphodiesterase enzymes. These enzymes catalyze the inactivation of intracellular mediators of signal transduction such as cAMP and cGMP and therefore, play a pivotal role in various cellular functions. PDE inhibitors (PDEI) are drugs that block one or more of the five subtypes of the PDE family and thereby prevent inactivation of the intracellular cAMP and cGMP by the respective PDE-subtypes. The first clinical use of PDEI was reported almost three decades ago. Studies later found the ability of these compounds to increase the levels of ubiquitous secondary messenger molecules that can cause changes in vascular tone, cardiac function and other cellular events and thus these findings paved the way for their use in various medical emergencies. PDEs are found to be distributed in many tissues including brain. Therefore, new therapeutic agents in the form of PDEI are being explored in neurodegenerative diseases including stroke. Although studies have revealed their use in cerebral infarction prevention, their full-fledged application in times of neurological emergency or stroke in specific has been very limited so far. Nevertheless, recent investigations suggest PDE4 and PDE5 inhibitors to play a vital role in mitigating stroke symptoms by modulating signaling mechanisms in PDE pathway. Further, extensive research in terms of their pharmacological properties like dosing, drug specific activities, use of simultaneous medications, ancillary properties of these compounds and studies on adverse drug reactions needs to be carried out to set them as standard drugs of use in stroke.
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Affiliation(s)
- Anjana Munshi
- Centre for Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, Punjab, India.
| | - Satrupa Das
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad, 500016, India
- Dr. NTR University of Health Sciences, Vijayawada, Andhra Pradesh, India
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Zhang XY, Wan Q, Zhu DY. No Association Between Single-Nucleotide Polymorphism 56 (SNP56) in Phosphodiesterase 4D (PDE4D) Gene and Susceptibility to Ischemic Stroke: A Meta-Analysis of 15 Studies. Med Sci Monit 2016; 22:3820-3827. [PMID: 27759733 PMCID: PMC5083063 DOI: 10.12659/msm.896904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Recent studies demonstrated that polymorphisms in the PDE4D gene were associated with several processes involved in the occurrence of ischemic stroke (IS). The association between specific PDE4D single-nucleotide polymorphism 56 (SNP56) and IS risk was initially identified via genome-wide association studies (GWAS), although the GWAS in different populations produced inconclusive results. Thus, we performed a meta-analysis to better explain the association between PDE4D SNP56 and IS risk. Material/Methods A literature search was conducted using PubMed, Embase, and Web of Science up to June 1, 2015. A fixed-effects or random-effects model was used to calculate the pooled odds ratios (ORs) based on the results from the heterogeneity tests. Results Finally, we performed a meta-analysis of 15 studies, involving 8731 IS patients and 10,756 controls. The results showed nonsignificant association between PDE4D SNP56 and IS risk (T vs. A: OR=1.01, 95%CI=0.88–1.15, P=0.90). Similarly, in the subgroup analysis by ethnicity, no significant association was observed in Asian (T vs. A: OR=1.08, 95%CI=0.80–1.44, P=0.62) or European (T vs. A: OR=0.96, 95%CI=0.86–1.08, P=0.54) population. Moreover, funnel plots and Egger regression testing showed no evidence of publication bias. Conclusions In summary, current evidence suggested that PDE4D SNP56 might not be associated with an increased susceptibility to IS. However, this conclusion needs further validation by well-designed studies with large sample sizes.
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Affiliation(s)
- Xin-Yong Zhang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Qi Wan
- Department of Neurology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
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Yang D, Huang X, Cui C, Zhang Y, Li Y, Zang X, He Y, Zheng H. Genetic Variants in the Transcriptional Regulatory Region of the ALOX5AP gene and Susceptibility to Ischemic Stroke in Chinese Populations. Sci Rep 2016; 6:29513. [PMID: 27416969 PMCID: PMC4945871 DOI: 10.1038/srep29513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 06/17/2016] [Indexed: 11/09/2022] Open
Abstract
No coding sequence variants of the ALOX5AP gene that lead to amino acid substitutions have been identified. A two-stage study design was used to explore the relationship between variants in the transcriptional regulatory region of ALOX5AP gene and ischemic stroke (IS) risk in Chinese populations. IS was determined using CT and/or MRI. First, 18 SNPs, located in the upstream promoter region of ALOX5AP gene, were genotyped in 200 IS patients and 200 controls. And one potential associated SNP (rs17222919) was identified (P = 0.005,OR = 0.623, 95% CI: 0.448~0.866). Next, another independent case-control cohort comprising 810 IS patients and 825 matched controls was recruited to investigate the role of rs17222919, rs9579646 polymorphisms and their haplotypes in IS risk. The G allele frequency of rs17222919 in the IS group was significantly lower than that in control group (P = 0.007, OR = 0.792, 95% CI: 0.669~0.937). T-A and G-A haplotypes were associated with IS (P = 0.001,OR = 1.282, 95% CI:1.100~1.495; P = 0.0001, OR = 0.712, 95% CI: 0.598~0.848; respectively). Our study providesevidence that rs17222919 is a potential genetic protective factor against IS. Furthermore, the T-A haplotype is a risk factor and the G-A haplotype is a protective factor against IS in Chinese population.
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Affiliation(s)
- Dongzhi Yang
- School of life sciences of Zhengzhou University, Zhengzhou, 450052, China
| | - Xiangnan Huang
- School of life sciences of Zhengzhou University, Zhengzhou, 450052, China
| | - Chuanju Cui
- Department of Neurology, The First People's Hospital of Zhengzhou, Zhengzhou, 450000, China
| | - Yuchao Zhang
- Department of Medical Genetics &Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Ya Li
- Department of Medical Genetics &Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Xin Zang
- School of life sciences of Zhengzhou University, Zhengzhou, 450052, China
| | - Ying He
- Department of Medical Genetics &Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Hong Zheng
- Department of Medical Genetics &Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450052, China
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Ghasemi MR, Zargari P, Pirhoushiaran M, Sasan nezhad P, Azarpazhooh MR, Sadr-Nabavi A. Is Apolipoprotein Genotype a Reason For the Excessive Incidence of Stroke in Persian Population? ACTA ACUST UNITED AC 2016. [DOI: 10.17795/jbm-5417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Malik R, Traylor M, Pulit SL, Bevan S, Hopewell JC, Holliday EG, Zhao W, Abrantes P, Amouyel P, Attia JR, Battey TWK, Berger K, Boncoraglio GB, Chauhan G, Cheng YC, Chen WM, Clarke R, Cotlarciuc I, Debette S, Falcone GJ, Ferro JM, Gamble DM, Ilinca A, Kittner SJ, Kourkoulis CE, Lemmens R, Levi CR, Lichtner P, Lindgren A, Liu J, Meschia JF, Mitchell BD, Oliveira SA, Pera J, Reiner AP, Rothwell PM, Sharma P, Slowik A, Sudlow CLM, Tatlisumak T, Thijs V, Vicente AM, Woo D, Seshadri S, Saleheen D, Rosand J, Markus HS, Worrall BB, Dichgans M. Low-frequency and common genetic variation in ischemic stroke: The METASTROKE collaboration. Neurology 2016; 86:1217-26. [PMID: 26935894 DOI: 10.1212/wnl.0000000000002528] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 12/14/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the influence of common and low-frequency genetic variants on the risk of ischemic stroke (all IS) and etiologic stroke subtypes. METHODS We meta-analyzed 12 individual genome-wide association studies comprising 10,307 cases and 19,326 controls imputed to the 1000 Genomes (1 KG) phase I reference panel. We selected variants showing the highest degree of association (p < 1E-5) in the discovery phase for replication in Caucasian (13,435 cases and 29,269 controls) and South Asian (2,385 cases and 5,193 controls) samples followed by a transethnic meta-analysis. We further investigated the p value distribution for different bins of allele frequencies for all IS and stroke subtypes. RESULTS We showed genome-wide significance for 4 loci: ABO for all IS, HDAC9 for large vessel disease (LVD), and both PITX2 and ZFHX3 for cardioembolic stroke (CE). We further refined the association peaks for ABO and PITX2. Analyzing different allele frequency bins, we showed significant enrichment in low-frequency variants (allele frequency <5%) for both LVD and small vessel disease, and an enrichment of higher frequency variants (allele frequency 10% and 30%) for CE (all p < 1E-5). CONCLUSIONS Our findings suggest that the missing heritability in IS subtypes can in part be attributed to low-frequency and rare variants. Larger sample sizes are needed to identify the variants associated with all IS and stroke subtypes.
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Shao M, Yi X, Chi L, Lin J, Zhou Q, Huang R. Ischemic stroke risk in a southeastern Chinese population: Insights from 5-lipoxygenase activating protein and phosphodiesterase 4D single-nucleotide polymorphisms. J Formos Med Assoc 2015; 114:422-9. [DOI: 10.1016/j.jfma.2013.12.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 12/10/2013] [Accepted: 12/18/2013] [Indexed: 11/16/2022] Open
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Fan Y, Chen H, Li A, Shi Y, Zhang Y, Feng Q, Sun Y, Zheng H, He Y. A promoter polymorphism (rs17222919, -1316T/G) of ALOX5AP gene is associated with decreased risk of ischemic stroke in two independent Chinese populations. PLoS One 2015; 10:e0122393. [PMID: 25815512 PMCID: PMC4376390 DOI: 10.1371/journal.pone.0122393] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 02/20/2015] [Indexed: 11/18/2022] Open
Abstract
No coding sequence variants of the gene encoding 5-lipoxygenase-activating protein (ALOX5AP) leading to amino acid substitutions have been identified. Therefore, variants in the ALOX5AP promoter region have received attention recently. The purpose of this study was to explore whether the promoter polymorphism rs17222919 is involved in the etiology of ischemic stroke (IS) in the Chinese Han population. We investigated the rs17222919 polymorphism by TaqMan genotyping in two independent Chinese Han samples: the first comprised 910 IS patients and 925 healthy inhabitants from the northern Henan Province, while the second included 1003 IS patients and 889 healthy controls from the southern Henan Province. Functional characterization of rs17222919 was performed by an in vitro luciferase assay. After adjusting for conventional risk factors, the G allele frequencies in the IS groups were significantly lower than that in the control groups of the two independent Chinese cohorts (19.0% vs. 22.9%, P = 0.004, odds ratio (OR) = 0.792, 95% confidence interval (CI) = 0.675-0.929; 18.8% vs. 22.9%, P = 0.002, OR = 0.782, 95% CI = 0.668-0.915, respectively). This was also observed in the large-artery atherosclerosis (LAA) and stroke of other undetermined etiology (SUE) subtypes (P = 0.019, OR = 0.815, 95% CI = 0.687-0.967; P = 0.021, OR = 0.815, 95% CI = 0.685-0.970, respectively). Additionally, the TG genotype and G allele frequencies were significantly lower in the IS compared with the control group in two female cohorts (P<0.05). Finally, the in vitro luciferase assay demonstrated that the G allele has a significantly lower transcription activity than the T allele (P = 0.031). Our study provides evidence that the promoter single nucleotide polymorphism (SNP) rs17222919 is a potential genetic protective factor for IS in the Chinese Han population.
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Affiliation(s)
- Yujia Fan
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Hui Chen
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Aifan Li
- Department of Neurology, the First People Hospital of Zhengzhou, Zhengzhou, China
| | - Yunshu Shi
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Yuchao Zhang
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Qingchuan Feng
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Yan Sun
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
| | - Hong Zheng
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
- * E-mail: (HZ); (YH)
| | - Ying He
- Department of Cell Biology and Medical Genetics, Basic Medical College of Zhengzhou University, Zhengzhou, China
- * E-mail: (HZ); (YH)
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Pirhoushiaran M, Ghasemi MR, Hami J, Zargari P, Sasan Nezhad P, Azarpazhooh MR, Sadr Nabavi A. The Association of Coagulation Factor V (Leiden) and Factor II (Prothrombin) Mutations With Stroke. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e11548. [PMID: 25763204 PMCID: PMC4329966 DOI: 10.5812/ircmj.11548] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 03/24/2014] [Accepted: 08/30/2014] [Indexed: 11/25/2022]
Abstract
Background: Epidemiological studies indicate that over the past forty years, the stroke incidence rates has increased. Factors V and II mutations are established genetic-variant risk factors for venous thrombosis; however, their contribution to stroke is a controversial issue. Objectives: This study aimed to investigate the potential association of FV and FII mutations with stroke in an Iranian population. Patients and Methods: The study population consisted of 153 patients of different stroke subtypes (except cryptogenic strokes), admitted to Ghaem Hospital, Mashhad, Iran. The control group included 153 age- and sex-matched subjects without a history of cerebrovascular or neurologic diseases. Mutations of FV and FII were determined by using a TaqMan SNP Genotyping technique. The chi-square and Exact Fisher tests were used to analyze the baseline characteristics. Results were as follows: The calculated P-value for sex and diabetes mellitus were 0.907 and 1.000, respectively. The case and control groups were also matched in low density lipoprotein (P = 0.816), high density lipoprotein (P = 0.323), triglyceride (P = 0.846), and total cholesterol (P = 0.079). Results: Analysis of the FV showed that none of the study subjects were AA homozygous for this mutation and only 6 heterozygous subjects were detected in the case and control groups. Regarding FII variants, none of the study subjects were AG heterozygous and only 1 AA homozygous was detected in the control group. Conclusions: The prevalence of both FV and FII variants are population based. Iran is an ethnically diverse country. Therefore, for a comprehensive analysis of a potential association of FV and/or FII mutations with stroke among Iranian population, epidemiological studies could be conducted among different ethnic groups.
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Affiliation(s)
- Maryam Pirhoushiaran
- Department of Human Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Mohammad Reza Ghasemi
- Department of Human Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Javad Hami
- Department of Anatomical Sciences, School of Medicine, Birjand University of Medical Sciences, Birjand, IR Iran
| | - Peyman Zargari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, IR Iran
| | - Payam Sasan Nezhad
- Ghaem Medical Center, Department of Neurology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Mahmood Reza Azarpazhooh
- Ghaem Medical Center, Department of Neurology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Ariane Sadr Nabavi
- Department of Human Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
- Medical Genetic Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
- Iranian Academic Centers for Education, Culture and Research (ACECR), Mashhad, IR Iran
- Corresponding Author: Ariane Sadr Nabavi, Department of Human Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran. Tel/Fax: +98-5118002226, E-mail:
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Liaquat A, Asifa GZ, Zeenat A, Javed Q. Polymorphisms of tumor necrosis factor-alpha and interleukin-6 gene and C-reactive protein profiles in patients with idiopathic dilated cardiomyopathy. Ann Saudi Med 2014; 34:407-14. [PMID: 25827698 PMCID: PMC6074564 DOI: 10.5144/0256-4947.2014.407] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND AND OBJECTIVES The tumor necrosis factor-alpha (TNF-a) and interleukin (IL)-6 gene polymorphism has a controversial role in the pathogenesis of cardiovascular disease among different populations. The effect of the cytokine's gene polymorphism on idiopathic dilated cardiomyopathy (IDCM) is still unresolved. The current study aimed to evaluate the association of the TNF-a -308 G/A and IL-6 -174 G/C polymorphism with IDCM in a Pakistani population. DESIGN AND SETTINGS Blood samples for this case-control study were collected from the cardiology out.patient department of multiple cardiology centers of Rawalpindi/Islamabad, Pakistan, between July 2012 and December 2012. PATIENTS AND METHODS IDCM cases (number [n]=250) and healthy controls (n=300) were genotyped using polymerase chain reaction and restriction fragment length polymorphism. RESULTS The TNF-a -308 variant genotypes GA and AA were more prevalent in patients compared with the control group (P < .0001). Similarly, the IL-6 -174 variant genotypes GC and CC showed a high prevalence in patients with IDCM compared with healthy controls (P=.0019). IDCM cases had a higher prevalence of the TNFa-308A (P < .0001) and the IL-6 -174C (P=.0008) mutant alleles than did the control group. The IDCM cases bearing the TNF-a-308 and IL-6 variant genotypes revealed elevated levels of high-sensitivity C-reactive protein (hs-CRP) when compared with the corresponding controls (P < .05). CONCLUSION The TNF-a -308 G/A and IL-6 -174 G/C gene polymorphisms and high levels of hs-CRP may be associated with the pathogenesis of IDCM in the study population.
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Affiliation(s)
| | | | | | - Qamar Javed
- Dr. Qamar Javed, Department of Biochemistry, Quaid-i-Azam University, Department of Biochemistry, Islamabad, Pakistan 4530, T: (92) 51 9064 3016,
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Yang D, Wang Q, Shi Y, Fan Y, Zheng HX, Song G, Feng Q, Zheng H, He Y. Mitochondrial DNA haplogroup D4b is a protective factor for ischemic stroke in Chinese Han population. Mol Genet Genomics 2014; 289:1241-6. [PMID: 25092472 DOI: 10.1007/s00438-014-0884-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/28/2014] [Indexed: 01/01/2023]
Abstract
Mitochondrial DNA (mtDNA) haplogroups affect the assembly and stability of the mitochondrial respiratory chain, which is potentially related to susceptibility to ischemic stroke (IS). However, the role of mtDNA in IS has not been comprehensively studied. The purpose of this study was to explore whether mtDNA polymorphisms and haplogroups are involved in the etiology of IS in the Chinese Han population. We recruited 200 patients with IS and 200 matched controls and genotyped them for 18 mtDNA single nucleotide polymorphisms defining the major Eastern Asian haplogroups by SNaPshot minisequencing. We also sequenced the hypervariable segment I (HVS-I), position 16051-16400. The prevalence of haplogroup D4b was significantly lower in IS patients than in healthy controls (0 and 8 %, respectively, corrected P = 2 × 10(-5), odds ratio = 0.028, 95 % confidence interval = 0.002-0.468).The positive association between haplogroup D4b and IS may be related to the protective effect of haplogroup D4b against oxidative damage, which decreases the risk of IS. Our study provides the first evidence that haplogroup D4b is a potential genetic protective factor for IS in the Chinese Han population.
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Affiliation(s)
- Dongzhi Yang
- School of life sciences of Zhengzhou University, Zhengzhou, 450052, China
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Association between phosphodiesterase 4D polymorphism SNP83 and ischemic stroke. J Neurol Sci 2014; 338:3-11. [DOI: 10.1016/j.jns.2013.12.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/27/2013] [Accepted: 12/04/2013] [Indexed: 11/17/2022]
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Domingues-Montanari S, Mendioroz M, del Rio-Espinola A, Fernández-Cadenas I, Montaner J. Genetics of stroke: a review of recent advances. Expert Rev Mol Diagn 2014; 8:495-513. [DOI: 10.1586/14737159.8.4.495] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Yang D, He Y, Li M, Shi C, Song G, Wang Q, Fan Y, Feng Q, Zheng H. A novel risk haplotype of ALOX5AP gene is associated with ischemic stroke in Chinese Han population. J Mol Neurosci 2013; 53:493-9. [PMID: 24198186 DOI: 10.1007/s12031-013-0147-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 10/09/2013] [Indexed: 02/02/2023]
Abstract
Previous studies have implicated that two at-risk haplotypes (HapA and HapB) of gene-encoding 5-lipoxygenase-activating protein (ALOX5AP) were significantly associated with stroke. The aim of this study was to explore the association between haplotypes of ALOX5AP gene and risk for ischemic stroke (IS) in Chinese Han population. A total of 492 patients with IS and 490 matched control subjects were recruited. Six ALOX5AP SNPs (SG13S377, SG13S114, SG13S41, SG13S89, SG13S32 and SG13S35) were genotyped by SNaPshot minisequence technique. A common genetic variant SG13S114/AA in the ALOX5AP gene was associated with IS in this Chinese cohort (OR = 2.514, 95 % CI = 1.667 ~ 3.790). HapA (TGA) and HapB (AAAG) had no significant difference in the patients (36.3 and 18.5 %, respectively) and controls (37.6 and 16.3 %, respectively) (P = 0.631 and P = 0.375, respectively). But, the frequency of Hap (GAAG) was significantly higher in the patients than that in the controls after Bonferroni's adjustment (P = 0.006). To conclude, SG13S114/AA of the ALOX5AP gene was associated with an increased risk for IS. A novel risk haplotype, Hap (GAAG) was a genetic risk factor for IS in this Chinese population.
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Affiliation(s)
- Dongzhi Yang
- Department of Bioengineering, Zhengzhou University, Zhengzhou, 450052, China
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Sinha E, Meitei SY, Garg PR, Saraswathy KN. PDE4D gene polymorphisms and coronary heart disease: a case-control study in a north Indian population. J Clin Lab Anal 2013; 27:297-300. [PMID: 23852788 PMCID: PMC6807558 DOI: 10.1002/jcla.21601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 02/08/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The present study aims to assess the association of PDE4D gene polymorphisms (SNP83 and SNP87) with Coronary Heart Disease (CHD) in a single Mendelian population of Delhi. METHODS A cross-sectional study was carried out wherein intravenous blood samples were collected from 100 cases and 100 age, sex and ethnicity matched controls along with their demographic, life style, and clinical profiles. RESULTS Genotypic frequencies of PDE4D gene variants 83 and 87 did not differ significantly between cases and controls. Odds ratio revealed a 1.4-fold increased risk with PDE4D 83 C allele; though not significant. Both the SNPs showed significant association with serum triglyceride (TG) (P ≤ 0.05). A significant linkage disequilibrium was observed between the SNPs. The haplotype with mutant alleles of the two SNPs showed fivefold increased risk (though not significant) and that with normal allele of SNP 83 and mutant allele of SNP 87 (T-T) was found to be significantly associated with the disease in the present population. CONCLUSIONS PDE4D gene variants 83 and 87 did not show any significant association with CHD. However, their interaction with TG and the haplotypic association found in the present population is indicative of the population-specific risk associated with CHD where majority of the individuals have high cholesterol and high Body Mass Index (BMI).
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Affiliation(s)
- Ekata Sinha
- Department of AnthropologyBiochemical and Molecular Anthropology LaboratoryUniversity of Delhi (North Campus)DelhiIndia
| | | | - Priyanka Rani Garg
- Department of AnthropologyBiochemical and Molecular Anthropology LaboratoryUniversity of Delhi (North Campus)DelhiIndia
| | - Kallur Nava Saraswathy
- Department of AnthropologyBiochemical and Molecular Anthropology LaboratoryUniversity of Delhi (North Campus)DelhiIndia
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Liu X, Zhu R, Li L, Deng S, Li Q, He Z. Genetic polymorphism in PDE4D gene and risk of ischemic stroke in Chinese population: a meta-analysis. PLoS One 2013; 8:e66374. [PMID: 23799094 PMCID: PMC3684617 DOI: 10.1371/journal.pone.0066374] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 05/06/2013] [Indexed: 11/18/2022] Open
Abstract
Background Stroke is the second most common cause of death and major cause of disability worldwide. The SNP 83 in PDE4D gene has been suggested as a risk factor in ischemic stroke, but direct evidence from genetic association studies remains inconclusive even in Chinese population. Methods Meta-analysis of case-control studies on the relationship between SNP 83 in PDE4D gene and susceptibility to ischemic stroke in Chinese population published domestically and abroad from January 2003 to September 2012. Results 9 case-control studies were selected. Meta-analysis results showed that the significant association between SNP 83 and ischemic stroke was found under the dominant model (OR = 1.34, 95% CI: 1.20–1.49) and recessive model (OR = 1.45, 95% CI: 1.19–1.76) in Chinese population. In subgroup meta-analysis, SNP 83 and atherothrombotic stroke, rather than lacunar stroke, showed the significant association under the dominant model (OR = 1.69, 95% CI: 1.41–2.01) and recessive model (OR = 1.47, 95% CI: 1.04–2.06). Conclusions The results suggest that SNP 83 in PDE4D gene is significantly associated with susceptibility to ischemic stroke in Chinese population.
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Affiliation(s)
- Xu Liu
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ruixia Zhu
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Lei Li
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Shumin Deng
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Qu Li
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhiyi He
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
- * E-mail:
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Li Z, Cai YH, Cheng YK, Lu X, Shao YX, Li X, Liu M, Liu P, Luo HB. Identification of Novel Phosphodiesterase-4D Inhibitors Prescreened by Molecular Dynamics-Augmented Modeling and Validated by Bioassay. J Chem Inf Model 2013; 53:972-81. [DOI: 10.1021/ci400063s] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zhe Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Ying-Hong Cai
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yuen-Kit Cheng
- Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong
| | - Xiao Lu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yong-Xian Shao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Xingshu Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Ming Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Peiqing Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Hai-Bin Luo
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
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Yadav S, Hasan N, Marjot T, Khan MS, Prasad K, Bentley P, Sharma P. Detailed analysis of gene polymorphisms associated with ischemic stroke in South Asians. PLoS One 2013; 8:e57305. [PMID: 23505425 PMCID: PMC3591429 DOI: 10.1371/journal.pone.0057305] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 01/20/2013] [Indexed: 11/30/2022] Open
Abstract
The burden of stroke is disproportionately high in the South Asian subcontinent with South Asian ethnicity conferring a greater risk of ischemic stroke than European ancestry regardless of country inhabited. While genes associated with stroke in European populations have been investigated, they remain largely unknown in South Asians. We conducted a comprehensive meta-analysis of known genetic polymorphisms associated with South Asian ischemic stroke, and compared effect size of the MTHFR C677T-stroke association with effect sizes predicted from homocysteine-stroke association. Electronic databases were searched up to August 2012 for published case control studies investigating genetic polymorphisms associated with ischemic stroke in South Asians. Pooled odds ratios (OR) for each gene-disease association were calculated using a random-effects model. We identified 26 studies (approximately 2529 stroke cases and 2881 controls) interrogating 33 independent genetic polymorphisms in 22 genes. Ten studies described MTHFR C677T (108 with TT genotype and 2018 with CC genotype) -homocysteine relationship and six studies (735 stroke cases and 713 controls) described homocysteine-ischemic stroke relationship. Risk association ORs were calculated for ACE I/D (OR 5.00; 95% CI, 1.17–21.37; p = 0.03), PDE4D SNP 83 (OR 2.20; 95% CI 1.21–3.99; p = 0.01), PDE4D SNP 32 (OR 1.57; 95% CI 1.01–2.45, p = 0.045) and IL10 G1082A (OR 1.44; 95% CI, 1.09–1.91, p = 0.01). Significant association was observed between elevated plasma homocysteine levels and MTHFR/677 TT genotypes in healthy South Asians (Mean difference (ΔX) 5.18 µmol/L; 95% CI 2.03–8.34: p = 0.001). Our results demonstrate that the genetic etiology of ischemic stroke in South Asians is broadly similar to the risk conferred in Europeans, although the dataset is considerably smaller and warrants the same clinical considerations for risk profiling.
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Affiliation(s)
- Sunaina Yadav
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Nazeeha Hasan
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Thomas Marjot
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Muhammad S. Khan
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Kameshwar Prasad
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Paul Bentley
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Pankaj Sharma
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
- * E-mail:
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Zhao J, Wang X, Xu J, Li N, Shang X, He Z, Yang J. Association of inflammatory response gene polymorphism with atherothrombotic stroke in Northern Han Chinese. Acta Biochim Biophys Sin (Shanghai) 2012; 44:1023-30. [PMID: 23076369 DOI: 10.1093/abbs/gms088] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Atherosclerosis is an important pathophysiological basis of atherothrombotic stroke (ATS), and inflammation plays a significant role in atherosclerosis formation. In this study, single-nucleotide polymorphisms (SNPs) in three key inflammation-related genes, 5-lipoxygenase activating protein (ALOX5AP), phosphodiesterase 4D (PDE4D), and interleukin-1α (IL-1α), were investigated to determine their association with ATS in Northern Han Chinese. Six-hundred and eighty-two ATS patients and 598 unrelated controls were recruited. Genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism and matrix-assisted laser desorption ionization time-of-flight mass spectrometry primer extension. The genotype and allele frequencies of each SNP were statistically analyzed. Risk of ATS was found for the ALOX5AP SG13S114A/T AA genotype (P = 0.040) and A allele (P = 0.033), PDE4D SNP83C/T TT genotype (P = 0.010) and T allele (P = 0.008) and SNP219A/G GG genotype (P = 0.025) and G allele (P = 0.022), and the IL-1α-889C/T T allele (P = 0.035). The differences still remained significant after adjustment. The ALOX5AP HapA haplotype was not correlated with ATS (P = 0.834), but GCGA represented an at-risk haplotype (P = 0.008). Furthermore, the PDE4D AA haplotype at SNP219-220 might be an at-risk haplotype (P = 0.013), while GA might be a protective haplotype (P = 0.005). The ALOX5AP (SG13S114A/T), PDE4D (SNP83C/T, 219A/G), and IL-1α (-889C/T) SNPs were associated with an increased risk of ATS in Northern Han Chinese.
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Affiliation(s)
- Jiuhan Zhao
- Department of Neurology, the First Affiliated Hospital of China Medical University, Shenyang 110001, China
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Vibha D, Prasad K. Cerebrovascular disease in South Asia - Part II: Risk factors and prevention. JRSM Cardiovasc Dis 2012; 1:cvd.2012.012026. [PMID: 24175078 PMCID: PMC3738370 DOI: 10.1258/cvd.2012.012026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
In South Asian countries, conventional vascular risk factors like hypertension, diabetes mellitus, cardiac disease, smoking, obesity, atrial fibrillation are the dominant ones, while other aetiologies like rheumatic heart disease, infective meningitis-related infarcts and postpartum cerebral venous thrombosis also constitute a big fraction. This review discusses the evidence of prevalence of various risk factors in South Asian countries and possible measures to combat the rising burden of cerebrovascular disease. The last part of the review discusses prevention and identification of risk factors that are unique to or especially found in patient population of South Asia.
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Affiliation(s)
| | - Kameshwar Prasad
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India
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Yoon D, Park SK, Kang D, Park T, Park JW. Meta-analysis of homogeneous subgroups reveals association between PDE4D gene variants and ischemic stroke. Neuroepidemiology 2011; 36:213-22. [PMID: 21677445 DOI: 10.1159/000327915] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 03/30/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND An Icelandic study showed a significant positive association between phosphodiesterase 4D (PDE4D) gene variants and stroke. However, subsequent studies reported conflicting results, possibly due to small sample sizes and the heterogeneity of the studies. METHOD We performed a meta-analysis on 6 SNPs of the PDE4D gene to investigate the association between this gene and ischemic stroke by integrating the results of previous studies, comprising 11,834 cases and 15,233 controls. A pooled genotypic odds ratio (OR) for each SNP was determined under 3 genetic models (i.e. dominant, recessive, and codominant) using both fixed- and random-effects models with consideration for heterogeneity and publication bias across studies. RESULTS Among the SNPs included in this study, SNP56 (rs702553) showed the most significant association with ischemic stroke in a meta-analysis comprised of 7 homogenous studies. The overall OR of the TT genotype compared to the AA genotype was 1.29 (95% CI 1.03-1.61; p = 0.022). For SNP83 (rs966221), a protective effect of the ancestral allele T was observed only in Asian populations (ORTT 0.79, 95% CI 0.69-0.90; p = 0.0005). This meta-analysis revealed a significant association of PDE4D gene variants with the risk of ischemic stroke, and further investigations are warranted to evaluate possible ethnic-specific effects.
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Affiliation(s)
- Dankyu Yoon
- Interdisciplinary Program in Bioinformatics, College of Natural Science, Seoul National University, Seoul, Republic of Korea
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Bayesian semiparametric meta-analysis for genetic association studies. Genet Epidemiol 2011; 35:333-40. [DOI: 10.1002/gepi.20581] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 01/04/2011] [Accepted: 02/10/2011] [Indexed: 01/16/2023]
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Maguire J, Thakkinstian A, Levi C, Lincz L, Bisset L, Sturm J, Scott R, Whyte S, Attia J. Impact of COX-2 rs5275 and rs20417 and GPIIIa rs5918 polymorphisms on 90-day ischemic stroke functional outcome: a novel finding. J Stroke Cerebrovasc Dis 2010; 20:134-44. [PMID: 20472470 DOI: 10.1016/j.jstrokecerebrovasdis.2009.10.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2009] [Accepted: 10/30/2009] [Indexed: 11/30/2022] Open
Abstract
We hypothesized that polymorphisms in 5 genes related to thrombolytic and inflammation pathways will independently influence occurrence, severity, and 3-month functional outcome in patients with ischemic stroke. This was a case-control design with ischemic stroke patients recruited from 4 public hospitals (n = 640) and community controls (n = 627). Baseline clinical data were collected, and follow-up telephone interviews were conducted with 520 patients at 90 days postevent to determine stroke outcome using the Barthel Index (BI), Modified Rankin Scale (mRS) and Glasgow Outcome Scale (GOS). Blood samples were collected and genotyped for polymorphisms in platelet glycoprotein Ibα (GPIbα) rs224309 and rs6065, glycoprotein IIIa (GPIIIa) rs5918, tissue plasminogen activator (tPA) rs63020761, plasminogen activating inhibitor (PAI-1) rs72578597, and cyclooxygenase-2 (COX-2) rs5275 and rs20417. COX-2 polymorphism rs5275 demonstrated a significant association with poststroke mRS, with a dominant genetic model demonstrating the best fit (CC + TC) (adjusted odds ratio [aOR] = 1.61; P = .026). The COX-2 rs20417 C allele showed an association with GOS (aOR = 1.95; P = .012), and again a dominant genetic model demonstrated the best fit (CC + GC). GPIIIa rs5918 (A1A2) was associated with poststroke BI, with a dominant model demonstrating the best fit (A1A2 + A2A2) (aOR = 0.56; P = .014). There was a significant association between stroke severity and tPA rs63020761 TT allele (aOR = 1.96; 95% CI = 1.03-3.72; P = .040). This is the first study to demonstrate associations between stroke functional outcome and 2 COX-2 variants (rs20417 and rs5275) and a GPIIIa variant (rs5918).
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Affiliation(s)
- Jane Maguire
- School of Medicine and Public Health, Faculty of Health, University of Newcastle, Callaghan, New South Wales, Australia.
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Li N, He Z, Xu J, Liu F, Deng S, Zhang H. Association of PDE4D and IL-1 gene polymorphism with ischemic stroke in a Han Chinese population. Brain Res Bull 2010; 81:38-42. [PMID: 19786079 DOI: 10.1016/j.brainresbull.2009.09.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 08/17/2009] [Accepted: 09/18/2009] [Indexed: 11/20/2022]
Abstract
BACKGROUND The single-nucleotide polymorphisms (SNPs) of the phosphodiesterase 4D (PDE4D) and interleukin-1 (IL-1) genes are associated with increased risk for the development of ischemic stroke (IS) in whites. However, little is known about whether this association could also occur in Han Chinese. METHOD A total of 371 patients with IS and unrelated healthy controls were recruited and the SNPs of the PDE4D (83T/C), (87T/C), IL-1 (-889C/T) and IL-1 (-511C/T) were characterized, respectively, by polymerase chain reactions-restriction fragment length polymorphism (PCR-RFLP). The genotype and allele frequencies of these SNPs in this population were statistically analyzed. RESULTS The genotype and allele frequencies of the PDE4D (87T/C) and IL-1 (-511C/T) were similar between IS patients and controls. In contrast, the frequencies of CC genotype and C allele of the PDE4D (83T/C) and the T allele frequency of IL-1 (-889C/T) in IS patients were significantly higher than that in healthy controls (p=0.001, p=0.003 and p=0.02, respectively), independent of the conventional risk factors. The values of odds ratio (OR) reached at OR=1.603; 95%CI=1.032-2.489; p=0.036 for the CC genotype of the PDE4D (83T/C) and OR=1.913; 95%CI=1.621-2.375; p=0.034 for the TT genotype of the IL-1 (-889C/T), respectively. CONCLUSIONS the SNPs of the PDE4D (83T/C) and IL-1 (-889C/T) were associated with increased risk for the development of IS in Northern Han Chinese.
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Affiliation(s)
- Nan Li
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang 110001, China
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Xu X, Li X, Li J, Ou R, Sheng W. Meta-analysis of association between variation in the PDE4D gene and ischemic cerebral infarction risk in Asian populations. Neurogenetics 2010; 11:327-33. [DOI: 10.1007/s10048-010-0235-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Accepted: 01/20/2010] [Indexed: 10/19/2022]
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Abstract
In this review, we discuss the genetic factors in both the aetiology and treatment of ischaemic stroke. We discuss candidate gene association studies, family linkage studies and the more recent whole genome association studies and whole genome expression studies. We also briefly discuss genetic testing for stroke risk and genetic analysis of treatment complications.
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Affiliation(s)
- M Matarin
- Laboratory of Neurogenetics, NIA/NIH, Bethesda, MD, USA
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Farooq MU, Majid A, Reeves MJ, Birbeck GL. The epidemiology of stroke in Pakistan: past, present, and future. Int J Stroke 2009; 4:381-9. [PMID: 19765127 DOI: 10.1111/j.1747-4949.2009.00327.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Stroke is a major public health problem in developing countries of South Asia. In this paper, we review the epidemiology of stroke in Pakistan. Most of the available data are based on hospital-centred case series addressing established stroke risk factors, stroke-related mortality and disability, functional status, and case fatality rates. There are limited population-based data regarding the prevalence of established stroke risk factors in the general population, and no epidemiologic studies have been conducted to specifically identify potential stroke risk factors unique to the region. The limited data that are available from Pakistan indicate that stroke epidemiology differs between Pakistan and Western populations - in Pakistan first stroke occurs at a younger age, particularly among women, and there is a higher proportion of haemorrhagic strokes. Besides the established stroke risk factors (e.g. hypertension, smoking, and diabetes) some potentially unique stroke risk factors related to life style and dietary habits such as huqqa smoking, use of dalda and desi ghee, and orally consumed forms of tobacco, may exist in Pakistan, and warrant further investigation. The shortage of trained stroke epidemiologists is a major limiting factor to the conduct of epidemiological stroke studies in Pakistan. Epidemiologic data are essential to guide health policy development aimed at decreasing the mortality and morbidity from stroke in Pakistan. To facilitate this process, medical professionals in Pakistan could participate in the World Health Organization's STEPwise approach to stroke surveillance, which provides a framework for data collection and comparison between and within populations.
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Affiliation(s)
- M U Farooq
- Department of Neurology and Ophthalmology, Division of Cerebrovascular Disorders, Michigan State University, East Lansing, MI 48824, USA
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Munshi A, Babu MS, Kaul S, Shafi G, Anila A, Alladi S, Jyothy A. Phosphodiesterase 4D (PDE4D) gene variants and the risk of ischemic stroke in a South Indian population. J Neurol Sci 2009; 285:142-5. [DOI: 10.1016/j.jns.2009.06.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 06/12/2009] [Accepted: 06/12/2009] [Indexed: 02/01/2023]
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Cheng H, Wang F, Ding X, Ding H, Song X. Association of PRKCH gene with lacunar infarction in a local Chinese Han population. Neurosci Lett 2009; 464:146-9. [PMID: 19703523 DOI: 10.1016/j.neulet.2009.08.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 08/18/2009] [Accepted: 08/19/2009] [Indexed: 10/20/2022]
Abstract
Recent evidence indicated that the PRKCH gene was a susceptibility gene for lacunar infarction in a Japanese population. The aim of the present study was to explore the association of the gene with lacunar infarction in a population of Chinese Han ancestry. A total of 280 consecutive lacunar infarction patients and 306 unrelated population-based controls that had been matched for age and sex were examined using a case-control design. Two single nucleotide polymorphisms (SNPs) of PRKCH gene (rs3783799 and rs2230500) were genotyped with ligase detection reaction (LDR) and multiplex polymerase chain reaction (PCR). Linkage disequilibrium (LD) and haplotype analysis were also investigated between these two groups. Overall alleles and genotype frequencies were similar between cases and controls. No significant association was detected with the gene polymorphisms mentioned above and lacunar infarction; no significant difference was found with haplotype analysis between these two groups. None of the two SNPs showed significant association with lacunar infarction in the whole subjects before and after adjustment for conventional stroke risk factors (hypertension, diabetes mellitus, and hypercholesterolemia). The frequencies of PRKCH differed largely from those in the Japanese population. The present study suggests that variants in the PRKCH gene are not the risk factors for lacunar infarction in individuals from a small population of Chinese Han ancestry. Population differences in alleles and haplotype frequencies as well as LD structure may contribute to the observed differences between populations.
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Affiliation(s)
- Hong Cheng
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300, Guangzhou Road, Nanjing, Jiangsu Province 210029, PR China
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Association between the PDE4D gene and ischaemic stroke in the Chinese Han population. Clin Sci (Lond) 2009; 117:265-72. [DOI: 10.1042/cs20080471] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Recent findings suggests that PDE4D (gene encoding phosphodiesterase 4D) is a stroke-related gene in the Icelandic population, but it is still very controversial as to whether it is a susceptible gene for stroke in other populations. In the present study, we attempted to explore the role of the gene in the pathogenesis of stroke in the Chinese Han population of eastern China. A total of 649 ischaemic stroke patients and 761 unrelated control individuals with no history of stroke or transient ischaemic attack were examined in a case-control study. Four SNPs (single nucleotide polymorphisms) rs152312 (C/T), SNP56 (A/T), SNP83 (C/T) and SNP87 (C/T) with a minor allele frequency over 5% were genotyped and the corresponding haplotypes were constructed. In an analysis of the combined cardiogenic and carotid stroke group, both the allele (P=0.0060) and genotype (P=0.0160) frequencies between cases and controls at SNP83 showed significant differences. However, no difference in haplotype frequencies was observed between cases and controls at rs152312 and SNP56. In the analysis of the small-artery-occlusive stroke group, no difference in allele or genotype frequencies was observed at any marker between cases and controls; the global haplotype frequency in rs152312 and SNP56 had a significant difference between cases and controls (P=0.0162); the frequency of haplotype C-A was higher in cases than in controls (P=0.0122). In conclusion, our present findings show that polymorphisms in the PDE4D gene are associated with an increased risk of ischaemic stroke in the Chinese Han population. The present study adds further support to the role of PDE4D in stroke.
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Quarta G, Stanzione R, Evangelista A, Zanda B, Di Angelantonio E, Marchitti S, Di Castro S, Di Vavo M, Volpe M, Rubattu S. Phosphodiesterase 4D and 5-lipoxygenase activating protein genes and risk of ischemic stroke in Sardinians. Eur J Hum Genet 2009; 17:1448-53. [PMID: 19417766 DOI: 10.1038/ejhg.2009.71] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Genetic factors contribute to the risk of ischemic stroke (IS). The phosphodiesterase-4D (PDE4D) and the 5-lipoxygenase activating protein (ALOX5AP) genes were identified as contributors to stroke in an Icelandic population. In an attempt to better define the contributory role of PDE4D and ALOX5AP genes to the risk of IS in humans, we carried out the present association study in a well-characterized, earlier published, genetically homogenous population from the island of Sardinia, Italy. In this cohort, including 294 cases and 235 controls, age, hypertension, hypercholesterolemia, and atrial fibrillation represent risk factors for IS. The PDE4D gene was evaluated by four single nucleotide polymorphisms (SNP32, SNP45, SNP83, SNP87) and by the microsatellite AC008818-1; the ALOX5AP gene was characterized by three SNPs (SG13S32, SG13S89, ALO2A). The results of our study provide no evidence of association between any single PDE4D and ALOX5AP gene variant with the risk of IS in the Sardinian cohort. Haplotype analysis, including that constructed with allele 0 of microsatellite AC008818-1 and SNP45 of the PDE4D gene, was also negative. In conclusion, we found no evidence of association between PDE4D and ALOX5AP genes and the risk of IS in a genetically homogenous population from Sardinia.
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Affiliation(s)
- Giovanni Quarta
- Department of Cardiology, University La Sapienza, Ospedale Sant'Andrea, Rome
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Saleheen D, Zaidi M, Rasheed A, Ahmad U, Hakeem A, Murtaza M, Kayani W, Faruqui A, Kundi A, Zaman KS, Yaqoob Z, Cheema LA, Samad A, Rasheed SZ, Mallick NH, Azhar M, Jooma R, Gardezi AR, Memon N, Ghaffar A, Fazal-ur-Rehman, Khan N, Shah N, Ali Shah A, Samuel M, Hanif F, Yameen M, Naz S, Sultana A, Nazir A, Raza S, Shazad M, Nasim S, Javed MA, Ali SS, Jafree M, Nisar MI, Daood MS, Hussain A, Sarwar N, Kamal A, Deloukas P, Ishaq M, Frossard P, Danesh J. The Pakistan Risk of Myocardial Infarction Study: a resource for the study of genetic, lifestyle and other determinants of myocardial infarction in South Asia. Eur J Epidemiol 2009; 24:329-38. [PMID: 19404752 DOI: 10.1007/s10654-009-9334-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2008] [Accepted: 03/11/2009] [Indexed: 12/20/2022]
Abstract
The burden of coronary heart disease (CHD) is increasing at a greater rate in South Asia than in any other region globally, but there is little direct evidence about its determinants. The Pakistan Risk of Myocardial Infarction Study (PROMIS) is an epidemiological resource to enable reliable study of genetic, lifestyle and other determinants of CHD in South Asia. By March 2009, PROMIS had recruited over 5,000 cases of first-ever confirmed acute myocardial infarction (MI) and over 5,000 matched controls aged 30-80 years. For each participant, information has been recorded on demographic factors, lifestyle, medical and family history, anthropometry, and a 12-lead electrocardiogram. A range of biological samples has been collected and stored, including DNA, plasma, serum and whole blood. During its next stage, the study aims to expand recruitment to achieve a total of about 20,000 cases and about 20,000 controls, and, in subsets of participants, to enrich the resource by collection of monocytes, establishment of lymphoblastoid cell lines, and by resurveying participants. Measurements in progress include profiling of candidate biochemical factors, assay of 45,000 variants in 2,100 candidate genes, and a genomewide association scan of over 650,000 genetic markers. We have established a large epidemiological resource for CHD in South Asia. In parallel with its further expansion and enrichment, the PROMIS resource will be systematically harvested to help identify and evaluate genetic and other determinants of MI in South Asia. Findings from this study should advance scientific understanding and inform regionally appropriate disease prevention and control strategies.
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Kim MK, Kim JT, Choi SM, Lee SH, Park MS, Cho KH. Phosphodiesterase 4D gene and risk of noncardiogenic ischemic stroke in a Korean population. J Korean Med Sci 2009; 24:307-10. [PMID: 19399275 PMCID: PMC2672133 DOI: 10.3346/jkms.2009.24.2.307] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2007] [Accepted: 06/09/2008] [Indexed: 11/20/2022] Open
Abstract
Recently published studies from different populations provide apparently conflicting evidence on the association between the phosphodiesterase 4D (PDE4D) gene and ischemic stroke. The relationship between a representative PDE4D genotype and ischemic stroke was explored in a case-control study of 205 consecutive Korean patients with noncardiogenic ischemic stroke and 103 healthy controls who were neurologically and radiologically proven to be stroke-free. We selected and genotyped a PDE4D single nucleotide polymorphism (SNP 41, rs152312) as a candidate marker for susceptibility to ischemic stroke because SNP 41 has shown the most significant association with stroke in both a meta-analysis and the original Icelandic study of the PDE4D gene. No significant difference was observed between the cases and controls in the distribution of the PDE4D SNP 41 genotypes. The results from the adjusted conditional logistic regression analysis (adjusted for age, hypertension, diabetes and smoking status) showed no significant association between PDE4D SNP 41 genotypes and an increased risk of noncardiogenic ischemic stroke. The PDE4D gene is not a major risk factor for noncardiogenic ischemic stroke in a Korean population, which supports the recent evidence suggesting that the causative genetic variants of ischemic stroke may differ across populations.
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Affiliation(s)
- Myeong-Kyu Kim
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
| | - Jun-Tae Kim
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
| | - Sung-Min Choi
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
| | - Seung-Han Lee
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
| | - Man-Seok Park
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
| | - Ki-Hyun Cho
- Department of Neurology, Chonnam National University Medical School and Research Institute of Medical Science, Gwangju, Korea
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Matsushita T, Kubo M, Yonemoto K, Ninomiya T, Ashikawa K, Liang B, Hata J, Doi Y, Kitazono T, Ibayashi S, Iida M, Kiyohara Y, Nakamura Y. Lack of association between variations of PDE4D and ischemic stroke in the Japanese population. Stroke 2009; 40:1245-51. [PMID: 19246712 DOI: 10.1161/strokeaha.108.527408] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE After the first genomewide association study of ischemic stroke identified PDE4D as a susceptible gene, many replication studies have been conducted. However, the validity of the association has remained controversial because of the heterogeneity of both genetic markers and phenotypes. METHODS We investigated the association between variations of PDE4D and ischemic stroke by 3 methods: single-marker, haplotype, and tag-single nucleotide polymorphism (SNP) analyses. In the single-marker analysis, we evaluated the association using 2 large case-control samples (1112 cases and 1112 control subjects in a sample obtained from Kyushu, Japan, and 1711 cases and 1786 control subjects in BioBank Japan) and a prospective cohort with 14 years of follow-up. These samples were analyzed both separately and pooled. Haplotype and tag-SNP analyses were performed using the 2 case-control samples together. RESULTS In single-marker association tests, we found no significant association in the same direction among the 6 SNP reported in the initial study and ischemic stroke subtypes. Haplotype analysis revealed no significant association between the region around the 5'-end of the gene and combined atherothrombotic and cardioembolic infarction. Rs7730070, a SNP located around the 3'-end of PDE4D, showed the lowest nominal probability value by tag-SNP analysis but was not significant after adjustment for multiple testing (adjusted probability value =0.36). CONCLUSIONS These results suggest that variations in PDE4D are not associated with ischemic stroke risk in the Japanese population.
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Affiliation(s)
- Tomonaga Matsushita
- Laboratory for Genotyping Development, Center for Genomic Medicine, RIKEN, Yokohama, Kanagawa, Japan
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Phosphodiesterase 4D gene polymorphism is associated with ischaemic and haemorrhagic stroke. Clin Sci (Lond) 2009; 116:335-40. [PMID: 18694398 DOI: 10.1042/cs20080162] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
It has been reported that the variants of the PDE4D (phosphodiesterase 4D) gene are associated with stroke, especially with the combination of cardio-embolic and carotid stroke in the Icelandic population, but it is still very controversial as to whether PDE4D is a susceptible gene for stroke in other populations. In the present study, we tested whether the PDE4D gene variation also confers stroke risk in a Chinese population. Our hypothesis was tested in a case-control study of a Chinese population comprising 639 stroke patients (including 253 with cerebral thrombosis, 171 with lacunar infarction and 215 with intracerebral haemorrhage) and 887 healthy controls. Three SNPs (single nucleotide polymorphisms) (rs966221, rs456009 and rs2910829) in PDE4D were chosen based on the significant association with stroke reported previously in a Western population, and these were genotyped using PCR/RFLP (restriction-fragment-length polymorphism) and confirmed by sequencing. We found that only SNP83 (rs966221) was associated with stroke. Allele C of rs966221 is a risk allele, conferring an increased risk for atherothrombotic strokes [OR (odds ratio), 1.51; 95% CI (confidence interval), 1.09-2.10] independent of conventional risk factors. Haplotype analysis confirmed that haplotype G-C-C was associated with increased risk for atherothrombotic stroke (OR, 1.80; 95% CI, 1.300-2.491). Our findings support that SNP83 of PDE4D is a genetic risk factor for atherothrombotic strokes in a Chinese population.
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Hsieh MS, Yu SC, Chung WT, Hsueh YM, Chen FC, Chiu WT, Lee HM. Phosphodiesterase 4D (PDE4D) Gene Variants and Risk of Ischemic Stroke in the Taiwanese Population. Lab Med 2009. [DOI: 10.1309/lm4x5pcrn4aecxbb] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Abstract
Stroke is a complex disease comprising of a heterogenous group of disorders with multiple risk factors. Genetic predisposition to stroke does occur and has been documented in both animal models and human beings. However, a precise definition of genetic factors responsible for stroke is still lacking because research into the genetic basis of stroke presents some unique challenges. More commonly it seems to be a multifactorial polygenic disorder. Mutations in some candidate genes are likely to predispose or give protection against stroke. Several mutations in various genes have been found to be associated with stroke. However, we have a long way to go before we can accurately pinpoint the genes responsible for multifactorial stroke. Recently, the deCODE group has suggested an association between the phosphodiesterase 4D (PDE4D) gene and the risk of stroke in Icelanders. PDE4D is the first putative gene associated with common polygenic stroke. Specific variants of this gene have been shown to present risk for ischemic stroke in Icelanders. Replication studies in non-Icelanders have yielded variable results. There may be obvious racial differences in the prevalence of these mutations but still many questions remain unsolved regarding the role of PDE4D in stroke development.
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Affiliation(s)
- Anjana Munshi
- Department of Molecular Biology, Institute of Genetics and Hospital for Genetic diseases, Begumpet, Hyderabad, India.
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Saleheen D, Ali A, Khanum S, Ozair MZ, Zaidi M, Sethi MJ, Khan N, Frossard P. Molecular analysis of the XLRS1 gene in 4 females affected with X-linked juvenile retinoschisis. Can J Ophthalmol 2008; 43:596-9. [DOI: 10.3129/i08-143] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Abstract
Ischaemic stroke is a heterogeneous multifactorial disorder. Epidemiological data provide substantial evidence for a genetic component to the disease, but the extent of predisposition is unknown. Large progress has been made in single-gene disorders associated with ischaemic stroke. The identification of NOTCH3 mutations in patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL) has led to new insights on lacunar stroke and small-vessel disease. Studies of sickle-cell disease have drawn attention to the importance of modifier genes and of gene-gene interactions in determining stroke risk. They have further highlighted a potential role of genetics in predicting stroke risk. Little is known about the genes associated with complex multifactorial stroke. There are probably many alleles with small effect sizes. Genetic-association studies on a wide range of candidate pathways, such as the haemostatic and inflammatory system, homocysteine metabolism, and the renin-angiotensin aldosterone system, suggest a weak but significant effect for several at-risk alleles. Genome-wide linkage studies in extended pedigrees from Iceland led to the identification of PDE4D and ALOX5AP. Specific haplotypes in these genes have been shown to confer risk for ischaemic stroke in the Icelandic population, but their role in other populations is unclear. Advances in high-throughput genotyping and biostatistics have enabled new study designs, including genome-wide association studies. Their application to ischaemic stroke requires the collaborative efforts of multiple centres. This approach will contribute to the identification of additional genes, novel pathways, and eventually novel therapeutic approaches to ischaemic stroke.
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Affiliation(s)
- Martin Dichgans
- Department of Neurology, Neurologische Klinik, Klinikum Grosshadern, Ludwig-Maximilians-University, D-81377 München, Germany.
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Bersano A, Ballabio E, Bresolin N, Candelise L. Genetic polymorphisms for the study of multifactorial stroke. Hum Mutat 2008; 29:776-95. [PMID: 18421701 DOI: 10.1002/humu.20666] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Single-gene disorders explain only a minority of stroke cases. Stroke represents a complex trait, which is usually assumed to be polygenic. On this topic, the role of a wide number of candidate genes has been investigated in stroke through association studies, with controversial results. Therefore, it is difficult for the clinician to establish the validity and the level of clinical applicability of the previously reported associations between genetic factors and stroke. This review is an update and an extensive analysis of the more recent association studies conducted in stroke. We evaluated a number of studies on several candidate genes (including F5, F2, FGA/FGB/FGG, F7, F13A1, vWF, F12, SERPINE1, ITGB3/PLA1/PLA2/ITGA2B, ITGA2, GP1BA, ACE, AGT, NOS3, APOE, LPL, PON1, PDE4D, ALOX5AP, MTHFR, MTR, and CBS), providing a final panel of genes and molecular variants. We categorized this panel in relation to the degree of association with stroke, supported by the results of meta-analyses and case-control studies. Our findings could represent a useful tool to address further molecular investigations and to realize more detailed meta-analyses.
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Affiliation(s)
- A Bersano
- Dipartimento di Scienze Neurologiche, Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Università degli Studi di Milano, Milano, Italy
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Lisabeth LD, Peyser PA, Long JC, Majerisk JJ, Smith MA, Morgenstern LB. Stroke among siblings in a biethnic community. Neuroepidemiology 2008; 31:33-8. [PMID: 18535398 DOI: 10.1159/000136649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Accepted: 03/18/2008] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Mexican Americans (MAs) have an increased risk of stroke compared with non-Hispanic whites (NHWs), especially at younger ages. Little is known regarding patterns of familial aggregation of stroke and whether familial risk assessment might prove a potentially useful tool in assessing stroke risk in this population. This study's objective was to estimate the sibling recurrence risk ratio (lambda(s)) for stroke and to compare this ratio between MAs and NHWs. METHODS Stroke and transient ischemic attack (TIA) cases (n = 181) between the ages of 45 and 64 years were identified by a population-based stroke study in a biethnic Texas community. lambda(s) was calculated overall and by ethnicity. RESULTS Siblings of ischemic stroke/TIA cases had a doubling in stroke risk compared to what would be expected based on national stroke prevalence estimates (lambda(s) = 1.92; 95% CI: 1.39-2.61). lambda(s) was 2.0 (95% CI: 1.39-2.81) among MA stroke/TIA cases and 1.66 (95% CI: 0.82-3.10) among NHW stroke/TIA cases. CONCLUSION The sibling recurrence risk for stroke was elevated in MA stroke/TIA cases suggesting that further ischemic stroke genetic studies across ethnicities may be warranted. In addition, a positive family history could prove a useful factor in the clinical setting for identifying MAs at increased stroke risk.
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Affiliation(s)
- Lynda D Lisabeth
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA.
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