19 results on '"Xu, Xiaohui"'
Search Results
2. TRIM25 promotes glioblastoma cell growth and invasion via regulation of the PRMT1/c-MYC pathway by targeting the splicing factor NONO
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Chen, Yike, Xu, Xiaohui, Ding, Kaikai, Tang, Tianchi, Cai, Feng, Zhang, Haocheng, Chen, Zihang, Qi, Yangjian, Fu, Zaixiang, Zhu, Ganggui, Dou, Zhangqi, Xu, Jinfang, Chen, Gao, Wu, Qun, Ji, Jianxiong, and Zhang, Jianmin
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- 2024
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3. IFI35 is involved in the regulation of the radiosensitivity of colorectal cancer cells
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Hu, Yan, Wang, Bing, Yi, Ke, Lei, Qingjun, Wang, Guanghui, and Xu, Xiaohui
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- 2021
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4. SRSF1 regulates exosome microRNA enrichment in human cancer cells
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Xu, Yi-Fan, Xu, Xiaohui, Gin, Amy, Nshimiyimana, Jean D., Mooers, Blaine H. M., Caputi, Massimo, Hannafon, Bethany N., and Ding, Wei-Qun
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- 2020
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5. Lipocalin-2 may produce damaging effect after cerebral ischemia by inducing astrocytes classical activation
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Zhao, Nan, Xu, Xiaomeng, Jiang, Yongjun, Gao, Jie, Wang, Fang, Xu, Xiaohui, Wen, Zhuoyu, Xie, Yi, Li, Juanji, Li, Rongrong, Lv, Qiushi, Liu, Qian, Dai, Qiliang, Liu, Xinfeng, and Xu, Gelin
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- 2019
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6. Effects of the home-based educational intervention on health outcomes among primarily Hispanic children with asthma: a quasi-experimental study
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Baek, Juha, Huang, Ke, Conner, Lucia, Tapangan, Niko, Xu, Xiaohui, and Carrillo, Genny
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- 2019
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7. Cerebral amyloid angiopathy-related inflammation: a case report presenting with a rare variant in SORL1 gene
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Du, Yanjiao, Liu, Chao, Ma, Congmin, Xu, Xiaohui, Zhou, Xufeng, Zhou, Haitao, and Huang, Chao
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- 2019
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8. MicroRNA-7 as a potential therapeutic target for aberrant NF-κB-driven distant metastasis of gastric cancer
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Ye, Tingbo, Yang, Meihua, Huang, Daochao, Wang, Xin, Xue, Bingqian, Tian, Na, Xu, Xiaohui, Bao, Liming, Hu, Huajian, Lv, Tiewei, and Huang, Yi
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- 2019
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9. Test-retest analysis of a non-invasive method of quantifying [11C]-PBR28 binding in Alzheimer’s disease
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Nair, Akshay, Veronese, Mattia, Xu, Xiaohui, Curtis, Charles, Turkheimer, Federico, Howard, Robert, and Reeves, Suzanne
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Inflammation ,Positron emission tomography ,Short Communication ,Alzheimer’s ,Dementia ,Microglia ,Erratum - Abstract
Purpose In order to maximise the utility of [11C]-PBR28 for use in longitudinal studies and clinical trials in Alzheimer’s disease (AD), there is a need to develop non-invasive metrics of tracer binding that do not require arterial cannulation. Recent work has suggested that standardised uptake value (SUV)-based methods may be sensitive to changes in translocator protein (TSPO) levels associated with neurodegeneration. However, the test-retest reliability of these approaches in AD over a time period relevant for clinical trials is unknown. In this study, the test-retest reliability of three SUV-based metrics was assessed in AD patients over 12 weeks. Methods Five patients with mild AD and the high-affinity binding TSPO genotype underwent two [11C]-PBR28 PET scans approximately 12 weeks apart. The test-retest reliability (TRR) of the unadjusted SUV, SUV relative to cerebellar grey matter (SUVRC) and SUV normalised to whole brain activity (SUVRWB) in nine cortical and limbic regions of interest was assessed using the absolute variability and the intraclass correlation coefficient. Results Of the three measures, SUVRWB performed best overall, showing low absolute variability (mean −0.13 %, SD 2.47 %) and high reliability (mean ICC = 0.83). Unadjusted SUV also performed well, with high reliability (ICC = 0.94) but also high variability (mean −1.24 %, SD 7.28 %). By comparison, the SUVRC showed higher variability (mean −3.98 %, SD 7.07 %) and low reliability (ICC = 0.65). Conclusions In this AD sample, we found that SUV-derived metrics of [11C]-PBR28 binding showed high stability over 12 weeks. These results compare favourably with studies reporting TRR of absolute quantification of [11C]-PBR28. Pending further validation of SUV-based measures of [11C]-PBR28, semi-quantitative methods of [11C]-PBR28 analysis may prove useful in longitudinal studies of AD. Electronic supplementary material The online version of this article (doi:10.1186/s13550-016-0226-3) contains supplementary material, which is available to authorized users.
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- 2016
10. Current opinion on the role of testosterone in the development of prostate cancer: a dynamic model.
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Xiaohui Xu, Xinguang Chen, Hui Hu, Dailey, Amy B., Taylor, Brandie D., Xu, Xiaohui, Chen, Xinguang, and Hu, Hui
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PROSTATE cancer risk factors ,PHYSIOLOGICAL effects of testosterone ,TUMOR growth ,CANCER invasiveness ,BLOOD sampling ,ANIMAL experimentation ,LONGITUDINAL method ,MATHEMATICAL models ,PROSTATE tumors ,TESTOSTERONE ,THEORY ,RETROSPECTIVE studies ,DISEASE progression ,DIAGNOSIS - Abstract
Background: Since the landmark study conducted by Huggins and Hodges in 1941, a failure to distinguish between the role of testosterone in prostate cancer development and progression has led to the prevailing opinion that high levels of testosterone increase the risk of prostate cancer. To date, this claim remains unproven.Presentation Of the Hypothesis: We present a novel dynamic mode of the relationship between testosterone and prostate cancer by hypothesizing that the magnitude of age-related declines in testosterone, rather than a static level of testosterone measured at a single point, may trigger and promote the development of prostate cancer.Testing the Hypothesis: Although not easily testable currently, prospective cohort studies with population-representative samples and repeated measurements of testosterone or retrospective cohorts with stored blood samples from different ages are warranted in future to test the hypothesis.Implications Of the Hypothesis: Our dynamic model can satisfactorily explain the observed age patterns of prostate cancer incidence, the apparent conflicts in epidemiological findings on testosterone and risk of prostate cancer, racial disparities in prostate cancer incidence, risk factors associated with prostate cancer, and the role of testosterone in prostate cancer progression. Our dynamic model may also have implications for testosterone replacement therapy. [ABSTRACT FROM AUTHOR]- Published
- 2015
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11. Health effects of air pollution on length of respiratory cancer survival.
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Xu, Xiaohui, Ha, Sandie, Kan, Haidong, Hu, Hui, Curbow, Barbara A, Lissaker, Claudia Tk, and Lissaker, Claudia T K
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Background: Air pollution has been extensively and consistently linked with mortality. However, no study has investigated the health effects of air pollution on length of survival among diagnosed respiratory cancer patients.Methods: In this study, we conducted a population-based study to investigate if air pollution exposure has adverse effects on survival time of respiratory cancer cases in Los Angeles (LA), CA and Honolulu, HI. We selected all White respiratory cancer patients in the two study areas from the 1992-2008 Surveillance Epidemiology and End Results cancer data. Death from respiratory cancer and length of survival were the main outcomes.Results: Kaplan-Meier survival analysis shows that all respiratory cancer cases exposed to high air pollution referring to the individuals from LA had a significantly shorter survival time than the low pollution exposure group referring to those from Honolulu without adjusting for other covariates (p <0.0001). Moreover, the results from the Cox Proportional-Hazards models suggest that exposure to particles less than 10 micrometers in diameter (PM10) was associated with an increased risk of cancer death (HR = 1.48, 95% CI: 1.44-1.52 per 10 μg/m3 increase in PM10) after adjusting for demographic factors and cancer characteristics. Similar results were observed for particles less than 2.5 micrometers in diameter and ozone.Conclusion: Our study indicates that air pollution may have deleterious effects on the length of survival among White respiratory cancer patients. This study calls for attention to preventive effort from air pollution for this susceptible population in standard cancer patient care. The findings from this study warrant further investigation. [ABSTRACT FROM AUTHOR]- Published
- 2013
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12. Current opinion on the role of testosterone in the development of prostate cancer: a dynamic model.
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Xu X, Chen X, Hu H, Dailey AB, and Taylor BD
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- Animals, Humans, Male, Prospective Studies, Retrospective Studies, Risk Factors, Disease Progression, Models, Theoretical, Prostatic Neoplasms blood, Prostatic Neoplasms diagnosis, Testosterone physiology
- Abstract
Background: Since the landmark study conducted by Huggins and Hodges in 1941, a failure to distinguish between the role of testosterone in prostate cancer development and progression has led to the prevailing opinion that high levels of testosterone increase the risk of prostate cancer. To date, this claim remains unproven., Presentation of the Hypothesis: We present a novel dynamic mode of the relationship between testosterone and prostate cancer by hypothesizing that the magnitude of age-related declines in testosterone, rather than a static level of testosterone measured at a single point, may trigger and promote the development of prostate cancer., Testing the Hypothesis: Although not easily testable currently, prospective cohort studies with population-representative samples and repeated measurements of testosterone or retrospective cohorts with stored blood samples from different ages are warranted in future to test the hypothesis., Implications of the Hypothesis: Our dynamic model can satisfactorily explain the observed age patterns of prostate cancer incidence, the apparent conflicts in epidemiological findings on testosterone and risk of prostate cancer, racial disparities in prostate cancer incidence, risk factors associated with prostate cancer, and the role of testosterone in prostate cancer progression. Our dynamic model may also have implications for testosterone replacement therapy.
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- 2015
- Full Text
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13. Investigation of the ZNF804A gene polymorphism with genetic risk for bipolar disorder in attention deficit hyperactivity disorder.
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Xu X, Breen G, Luo L, Sun B, Chen CK, Paredes UM, Huang YS, Wu YY, and Asherson P
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- Adolescent, Attention Deficit Disorder with Hyperactivity complications, Bipolar Disorder complications, Child, Child, Preschool, Female, Genome-Wide Association Study, Humans, Male, Taiwan, United Kingdom, Attention Deficit Disorder with Hyperactivity genetics, Bipolar Disorder genetics, Genetic Predisposition to Disease, Kruppel-Like Transcription Factors genetics, Polymorphism, Single Nucleotide
- Abstract
Background: Genome-wide association studies (GWAS) have been conducted on many psychiatric disorders. Evidence from large GWAS indicates that the single nucleotide polymorphism (SNP) rs1344706 in the zinc-finger protein 804A gene (ZNF804A) is associated with psychotic disorders including bipolar disorder and schizophrenia. One study also found significant association between rs1344706 and the executive control network of attention. In this study we examine the role of the rs1344706 polymorphism that previously showed association with BD and is known to alter expression of the gene in two clinical family-based ADHD samples from the UK and Taiwan., Findings: To investigate the association between rs1344706 and ADHD, two family samples of ADHD probands from the United Kingdom (n = 180) and Taiwan (n = 212) were genotyped using TaqMan SNP genotyping assays and analysed using within-family transmission disequilibrium test. No significant associations were found between rs1344706 polymorphism and ADHD in either of the samples from Taiwan (P = 0.91) and UK (P = 0.41). Even combining the two datasets together the A allele of rs1344706 SNP was still not significantly over-transmitted to affected probands (P = 0.50). Furthermore, there was no evidence of association with the specific symptoms subgroups of inattention or hyperactivity-impulsivity., Conclusions: In this study we used family-based ADHD data in the UK and Taiwanese population to test for an association between rs1344706 SNP in the ZNF804A gene and ADHD. Results showed no significant association of rs1344706 with ADHD in UK and Taiwanese samples.
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- 2013
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14. Association of the interleukin 1 beta gene and brain spontaneous activity in amnestic mild cognitive impairment.
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Zhuang L, Liu X, Xu X, Yue C, Shu H, Bai F, Yu H, Shi Y, and Zhang Z
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- Aged, Brain Mapping, Case-Control Studies, China, Cognitive Dysfunction ethnology, Female, Gene Frequency, Genotype, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Neuropsychological Tests, Statistics as Topic, Brain pathology, Cognitive Dysfunction genetics, Cognitive Dysfunction pathology, Interleukin-1beta genetics, Polymorphism, Single Nucleotide genetics
- Abstract
Purpose: The inflammatory response has been associated with the pathogenesis of Alzheimer's disease (AD). The purpose of this study is to determine whether the rs1143627 polymorphism of the interleukin-1 beta (IL-1β) gene moderates functional magnetic resonance imaging (fMRI)-measured brain regional activity in amnestic mild cognitive impairment (aMCI)., Methods: Eighty older participants (47 with aMCI and 33 healthy controls) were recruited for this study. All of the participants were genotyped for variant rs1143627 in the IL1B gene and were scanned using resting-state fMRI. Brain activity was assessed by amplitude of low-frequency fluctuation (ALFF)., Results: aMCI patients had abnormal ALFF in many brain regions, including decreases in the inferior frontal gyrus, the superior temporal lobe and the middle temporal lobe, and increases in the occipital cortex (calcarine), parietal cortex (Pcu) and cerebellar cortex. The regions associated with an interaction of group X genotypes of rs1143627 C/T were the parietal cortex (left Pcu), frontal cortex (left superior, middle, and medial gyrus, right anterior cingulum), occipital cortex (left middle lobe, left cuneus) and the bilateral posterior lobes of the cerebellum. Regarding the behavioral significance, there were significant correlations between ALFF in different regions of the brain and with the cognitive scores of each genotype group., Conclusions: The present study provided evidence that aMCI patients had abnormal ALFF in many brain regions. Specifically, the rs1143627 C/T polymorphism of the IL1B gene may modulate regional spontaneous brain activity in aMCI patients.
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- 2012
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15. Association study between a polymorphism at the 3'-untranslated region of CLOCK gene and attention deficit hyperactivity disorder.
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Xu X, Breen G, Chen CK, Huang YS, Wu YY, and Asherson P
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- Adolescent, Alleles, Child, Child, Preschool, Family, Genetic Association Studies, Genotype, Humans, Parents, Sequence Analysis, DNA, Taiwan, United Kingdom, 3' Untranslated Regions, Attention Deficit Disorder with Hyperactivity genetics, CLOCK Proteins genetics, Polymorphism, Single Nucleotide
- Abstract
Background: The circadian locomotor output cycles kaput (CLOCK) gene encodes protein regulation circadian rhythm and also plays some roles in neural transmitter systems including the dopamine system. Several lines of evidence implicate a relationship between attention-deficit hyperactivity disorder (ADHD), circadian rythmicity and sleeping disturbances. A recent study has reported that a polymorphism (rs1801260) at the 3'-untranslated region of the CLOCK gene is associated with adult ADHD., Methods: To investigate the association between the polymorphism (rs1801260) in ADHD, two samples of ADHD probands from the United Kingdom (n = 180) and Taiwan (n = 212) were genotyped and analysed using within-family transmission disequilibrium test (TDT). Bonferroni correction procedures were used to just for multiple comparisons., Results: We found evidence of increased transmission of the T allele of the rs1801260 polymorphism in Taiwanese samples (P = 0.010). There was also evidence of preferential transmission of the T allele of the rs1801260 polymorphism in combined samples from the Taiwan and UK (P = 0.008)., Conclusion: This study provides evidence for the possible involvement of CLOCK in susceptibility to ADHD.
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- 2010
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16. Investigation of the serotonin 2C receptor gene in attention deficit hyperactivity disorder in UK samples.
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Xu X, Brookes K, Sun B, Ilott N, and Asherson P
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Background: Attention deficit hyperactivity disorder (ADHD) is a common, childhood-onset neurodevelopmental disorder that is more frequent in males than females. Several genes on the X chromosome have been studied as candidate risk factors for ADHD including the 5-HT2C receptor (HTR2C) gene. Association between polymorphisms in HTR2C and ADHD were reported in a recent study., Findings: In this study we investigated the association between ADHD and two polymorphisms C-759T (rs3813929) and G-697C (rs518147) in the promoter region of the HTR2C gene using a sample of 180 UK ADHD probands and their parents. We have shown that the -697G allele was significantly over-transmitted to affected ADHD probands (P = 0.017). No association was detected between the C-759T polymorphism and ADHD. Haplotype analysis of the two markers revealed no significantly increased transmission of any haplotype to ADHD., Conclusion: The findings provide evidence that the G-allele of the G-697C HTR2C polymorphism may be involved in the development of ADHD. The results replicate one of the findings published recently.
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- 2009
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17. Association study of promoter polymorphisms at the dopamine transporter gene in Attention Deficit Hyperactivity Disorder.
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Xu X, Mill J, Sun B, Chen CK, Huang YS, Wu YY, and Asherson P
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- Adolescent, Adult, Child, Child, Preschool, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Genotype, Humans, Male, Risk Factors, Attention Deficit Disorder with Hyperactivity genetics, Dopamine Plasma Membrane Transport Proteins genetics, Polymorphism, Genetic, Promoter Regions, Genetic
- Abstract
Background: Attention deficit hyperactivity disorder (ADHD) is a complex neurobehavioral disorder. The dopamine transporter gene (DAT1/SLC6A3) has been considered a good candidate for ADHD. Most association studies with ADHD have investigated the 40-base-pair variable number of tandem repeat (VNTR) polymorphism in the 3'-untranslated region of DAT1. Only few studies have reported association between promoter polymorphisms of the gene and ADHD., Methods: To investigate the association between the polymorphisms -67A/T (rs2975226) and -839C/T (rs2652511) in promoter region of DAT1 in ADHD, two samples of ADHD patients from the UK (n = 197) and Taiwan (n = 212) were genotyped, and analysed using within-family transmission disequilibrium test (TDT)., Results: A significant association was found between the T allele of promoter polymorphism -67A/T and ADHD in the Taiwanese population (P = 0.001). There was also evidence of preferential transmission of the T allele of -67A/T polymorphism in combined samples from the UK and Taiwan (P = 0.003). No association was detected between the -839C/T polymorphism and ADHD in either of the two populations., Conclusion: The finding suggests that genetic variation in the promoter region of DAT1 may be a risk factor in the development of ADHD.
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- 2009
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18. Association study between the monoamine oxidase A gene and attention deficit hyperactivity disorder in Taiwanese samples.
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Xu X, Brookes K, Chen CK, Huang YS, Wu YY, and Asherson P
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- Adolescent, Child, Child, Preschool, Female, Humans, Male, Promoter Regions, Genetic, Taiwan ethnology, Tandem Repeat Sequences, Attention Deficit Disorder with Hyperactivity ethnology, Attention Deficit Disorder with Hyperactivity genetics, Monoamine Oxidase genetics, Polymorphism, Single Nucleotide
- Abstract
Background: Attention deficit hyperactivity disorder (ADHD) is a common and highly heritable disorder of childhood characterized by inattention, hyperactivity and impulsivity. Molecular genetic and pharmacological studies suggest the involvement of the dopaminergic, serotonergic and noradrenergic neurotransmitter systems in the pathogenesis of ADHD. Monoamine oxidase A (MAO-A) encodes an enzyme that degrades biogenic amines, including neurotransmitters such as norepinephrine, dopamine and serotonin. In this study we examined a 30 bp promoter variable number tandem repeat (VNTR) and a functional G/T single nucleotide polymorphism (SNP) at position 941 in exon 8 (941G/T) of MAO-A for association with ADHD in a Taiwanese sample of 212 ADHD probands., Methods: Within-family transmission disequilibrium test (TDT) was used to analyse association of MAO-A polymorphisms with ADHD in a Taiwanese population., Results: A nominally significant association was found between the G-allele of 941G/T in MAO-A and ADHD (TDT: P = 0.034. OR = 1.57). Haplotype analysis identified increased transmission of a haplotype consisting of the 3-repeat allele of the promoter VNTR and the G-allele of the 941G/T SNP (P = 0.045) to ADHD cases which the strong association with the G-allele drove., Conclusion: These findings suggest the importance of the 941G/T MAO-A polymorphism in the development of ADHD in the Taiwanese population. These results replicate previously published findings in a Caucasian sample.
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- 2007
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19. No evidence for the association of DRD4 with ADHD in a Taiwanese population within-family study.
- Author
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Brookes KJ, Xu X, Chen CK, Huang YS, Wu YY, and Asherson P
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- Adolescent, Attention Deficit Disorder with Hyperactivity ethnology, Child, Child, Preschool, Family Health, Gene Frequency, Humans, Receptors, Dopamine D4, Taiwan, Tandem Repeat Sequences, Attention Deficit Disorder with Hyperactivity genetics, Genetic Predisposition to Disease, Polymorphism, Genetic, Receptors, Dopamine D2 genetics
- Abstract
Background: Attention Deficit Hyperactivity Disorder (ADHD) is a prevalent and highly heritable childhood disorder. The dopamine D4 receptor (DRD4) gene has shown a genetic association with ADHD in Caucasian populations with meta-analysis indicating a small but significant effect across datasets. It remains uncertain whether this association can be generalised to non-Caucasian ethnic groups. Here we investigate two markers within the DRD4 gene in a Taiwanese population, the exon 3 variable number tandem repeat (VNTR) and a 5' 120 base-pair duplication., Methods: Within-family transmission disequilibrium tests of association of the 5' 120 base-pair duplication, and exon 3 VNTR in a Taiwanese population., Results: No evidence of association of ADHD with either polymorphism in this population was observed., Conclusion: The DRD4 gene markers investigated were not found to be associated with ADHD in this Taiwanese sample. Further work in Taiwanese and other Asian populations will therefore be required to establish whether the reports of association of DRD4 genetic variants in Caucasian samples can be generalised to Asian populations.
- Published
- 2005
- Full Text
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