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Psychiatric Genetics

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https://www.readbyqxmd.com/read/29256968/lack-of-association-between-triggering-receptor-expressed-on-myeloid-cells-2-polymorphism-rs75932628-and-late-onset-alzheimer-s-disease-in-a-chinese-han-population
#1
Ping Wang, Qihao Guo, Yan Zhou, Keliang Chen, Yan Xu, Ding Ding, Zhen Hong, Qianhua Zhao
Recently, several studies have investigated the association between the rare mutation of triggering receptor expressed on myeloid cells 2 (TREM2) gene (rs75932628-T) and the risk of late-onset Alzheimer's disease (LOAD), but they did not draw the same conclusion. Our aim was to investigate the link between the TREM2 polymorphism and LOAD in the Chinese Han population. We examined 786 patients and 803 controls in this study. The rs75932628 polymorphism was evaluated using high-resolution melting analysis and direct sequencing...
December 18, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29256967/investigation-of-differential-hdac4-methylation-patterns-in-eating-disorders
#2
Subha Subramanian, Patricia R Braun, Shizhong Han, James B Potash
The objective of this study was to investigate the relationship between methylation patterns of the histone deacetylase 4 gene and eating disorders in a site previously associated with anorexia nervosa (AN). Women with AN (N=28) or bulimia nervosa (BN) (N=19) were age-matched and sex-matched to controls (N=45). We obtained saliva-derived DNA and use bisulfite pyrosequencing to examine region-specific methylation differences between cases and controls. The region assayed includes 15 CpGs. We found no significant association between the previously implicated CpG and either AN or BN...
December 18, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29240020/association-study-of-fgf18-with-developmental-dyslexia-in-chinese-population
#3
Huan Chen, Yuxi Zhou, Zeng Ge, Qian Li, Qinsheng Sun, Liyuan Zheng, Hong Lv, Li-Hai Tan, Yimin Sun
Developmental dyslexia (DD) is a neurobiological disorder featured by reading disabilities. In recent years, genome-wide approaches provided new perspectives to discover novel candidate genes of DD. In a previous study, rs9313548 located downstream of FGF18 showed borderline genome-wide significant association with DD. Herein, we selected rs9313548 and 11 independent tag single nucleotide polymorphisms covering gene region of FGF18 to perform association analysis with DD among 978 Chinese dyslexic cases and 998 controls recruited from elementary schools...
December 12, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29112096/genetic-analysis-of-common-variants-in-the-znf804a-gene-with-schizophrenia-and-major-depressive-disorder
#4
Qingzhong Wang, Weidong Ji, Kuanjun He, Zhiqiang Li, Jianhua Chen, Wenjin Li, Zujia Wen, Jiawei Shen, Qiang Yu, Guoyin Feng, Jue Ji, Yujiong Wang, Yongyong Shi
AIM/OBJECTIVES/BACKGROUND: ZNF804A has been investigated widely as a candidate susceptibility gene for mental disorders in individuals of different ethnicities. However, in the Han Chinese population, most studies of this gene have focused on associations of the common single nucleotide polymorphism (SNP) rs1344706. METHODS: To investigate additional common variants within ZNF804A, we carried out a case-control study of 13 SNPs distributed across the whole gene, in 1330 schizophrenic patients, 1045 major depressive disorder patients, and 1235 normal controls...
November 3, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29068871/ank3-gene-polymorphisms-and-bipolar-disorder-a-meta-analysis
#5
Yang Roby
OBJECTIVE: Converging evidence has suggested ankyrin 3 (ANK3) as a risk gene for bipolar disorder (BD). However, association studies investigating its genetic variants and BD susceptibility have reported inconsistent results. In the present meta-analysis, we aimed to establish whether ANK3 single nucleotide polymorphisms (SNPs) confer increased risk for BD. METHODS: PubMed, Medline, PsycINFO, Embase, and Scopus were searched for literature published up to January 2017...
December 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29068870/multiple-tissue-methylation-analysis-of-htr2a-exon-i-in-suicidal-behavior
#6
Ali Bani-Fatemi, John Strauss, Clement Zai, Albert H C Wong, Vincenzo de Luca
OBJECTIVE: The main aim of the current study was to investigate epigenetic alterations in serotonin 2A receptor (HTR2A) exon I CpG sites as possible risk factors for suicidal behavior. We also aimed to analyze the epigenetic alterations in two different tissues as epigenetic mechanisms are tissue specific. These epigenetic changes may lead to a better prediction of suicidal behavior. METHODS: Direct CpG methylation analysis was carried out on genomic DNA from the saliva of 20 schizophrenia suicide attempters and 27 non-attempters, and from post-mortem brain tissues of nine suicide victims and 11 controls...
December 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/29049139/the-role-of-the-cys23ser-rs6318-polymorphism-of-the-htr2c-gene-in-suicidal-behavior-systematic-review-and-meta-analysis
#7
Thelma B González-Castro, Yazmín Hernandez-Diaz, Isela E Juárez-Rojop, Lilia López-Narváez, Carlos A Tovilla-Zárate, José M Rodriguez-Perez, Juan P Sánchez-de la Cruz
The polymorphisms of the serotonin receptor 2C (HTR2C) gene have been proposed to influence suicidal behavior. The aim of our study was to explore the role of the HTR2C gene variant Cys23Ser (rs6318) in the pathogenesis of suicidal behavior through a systematic review and meta-analysis. The search was performed using EBSCO and PubMed databases. To be included in the analysis, the studies had to evaluate suicidal behavior (attempted, ideation, or completed suicide). The results of the meta-analysis were expressed as odds ratios (ORs)...
December 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28737528/genetic-variants-of-increased-waist-circumference-in-psychosis
#8
Dzana S Hukic, Urban Ösby, Eric Olsson, Agneta Hilding, Claes-Göran Östenson, Harvest F Gu, Ewa Ehrenborg, Gunnar Edman, Martin Schalling, Catharina Lavebratt, Louise Frisén
OBJECTIVE: We examined whether established metabolic risk genetic variants in the population confer a risk for increased waist circumference in patients with schizophrenia spectrum disorders and also an association with schizophrenia spectrum disorders irrespective of waist circumference. PATIENTS AND METHODS: We analyzed the association in (i) a case-case model in which patients with schizophrenia spectrum disorder with increased waist circumference (≥80 cm for women and ≥94 cm for men) (n=534) were compared with patients with normal waist circumference (<80 cm for women; <94 cm for men) (n=124), and in (ii) a case-control model in which schizophrenia spectrum disorder patients with increased waist circumference or irrespective of waist circumference were compared with population-derived controls (n=494) adjusted for age, sex, fasting glucose, smoking, and family history of diabetes...
December 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28731911/expert-and-self-assessment-of-lifetime-symptoms-and-diagnosis-of-major-depressive-disorder-in-large-scale-genetic-studies-in-the-general-population-comparison-of-a-clinical-interview-and-a-self-administered-checklist
#9
Jessica Martin, Fabian Streit, Jens Treutlein, Maren Lang, Josef Frank, Andreas J Forstner, Franziska Degenhardt, Stephanie H Witt, Thomas G Schulze, Sven Cichon, Markus M Nöthen, Marcella Rietschel, Jana Strohmaier
Major depression disorder (MDD) is a complex neuropsychiatric disorder and an increasing number of genetic risk variants are being identified. Investigation of their influence in the general population requires accurate and efficient assessment of depressive symptoms. Here, clinical interviews conducted by clinicians are the gold standard. We investigated whether valid and reliable clinical phenotypes can be obtained efficiently using self-administered instruments. Lifetime depressive symptoms and lifetime MDD diagnosis were assessed in 464 population-based individuals using a clinical interview and a structured, self-administered checklist...
October 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28590957/genetic-moderation-of-cocaine-subjective-effects-by-variation-in-the-tph1-tph2-and-slc6a4-serotonin-genes
#10
Michelle A Patriquin, Sara C Hamon, Mark J Harding, Ellen M Nielsen, Thomas F Newton, Richard De La Garza, David A Nielsen
OBJECTIVE: This study investigated variants of tryptophan hydroxylase (TPH)1, TPH2, and SLC6A4 in the moderation of the subjective effects of cocaine. METHODS: Non-treatment-seeking cocaine-dependent individuals (N=66) were intravenously administered saline and cocaine (40 mg) in a randomized order. Participants self-reported subjective effects of cocaine using a visual analog scale starting before administration of saline or cocaine (-15 min) to up to 20 min after infusion...
October 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28570395/runs-of-homozygosity-copy-number-variation-and-risk-for-depression-and-suicidal-behavior-in-an-arab-bedouin-kindred
#11
Nadine M Melhem, Sami Hamdan, Lambertus Klei, Shawn Wood, Jamie Zelazny, Amos Frisch, Abraham Weizman, Miri Carmel, Elena Michaelovsky, Ilana Farbstein, Danuta Wasserman, Muhammad El-Heib, Robert Ferrell, Alan Apter, Bernie Devlin, David Brent
OBJECTIVES: Inbreeding increases the probability of homozygosity of deleterious alleles. Inbreeding and runs of homozygosity (ROH) are associated with an increased risk for disease phenotypes, including schizophrenia and other psychiatric disorders. The effects of inbreeding, ROH, homozygous deletions, and other copy number variations (CNVs) on risk for depression and suicide attempt (SA) were quantified in an Arab Bedouin Kindred. METHODS: We carried out genetic analyses of 439 individuals from an Arab kindred with high rates of depression and suicidal behavior...
October 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28570394/longitudinal-changes-of-associations-between-the-preproghrelin-leu72met-polymorphism-with-depression-in-chinese-han-adolescents-after-the-wenchuan-earthquake
#12
Mi Su, Ting Cao, Yue Feng, Qi W Guo, Mei Fan, Ding Z Fang
AIM: The present study aimed to investigate longitudinal associations of preproghrelin Leu72Met with depression in Chinese Han adolescents after the Wenchuan earthquake in 2008. MATERIALS AND METHODS: A total of 709 volunteers were enrolled from a high school near the epicenter of the earthquake and 662, 643, and 510 students were finally included at 6, 12, and 18 months, respectively, after the earthquake. Depressive symptoms were assessed using the Beck Depression Inventory (BDI)...
October 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28562378/lack-of-association-between-comt-val158met-and-zdhhc8-rs175174-polymorphisms-and-susceptibility-to-schizophrenia-in-a-brazilian-population
#13
Leopoldo S Moraes, Augusto C C Santos, Hygor Ferreira-Fernandes, France K N Yoshioka, Silmar S Teixeira, Adriana C Guimarães, Carlos A M da Rocha, Juan A Rey, Giovanny R Pinto, Rommel R Burbano
No abstract text is available yet for this article.
October 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28658089/no-association-of-grik4-polymorphisms-with-schizophrenia-in-the-chinese-han-population
#14
Decheng Ren, Fei Xu, Yan Bi, Weibo Niu, Rui Zhang, Jiaxin Hu, Zhenming Guo, Yanfei Cao, Xiaoye Huang, Xi Wu, Fengping Yang, Lu Wang, Weidong Li, Yifeng Xu, Lin He, Tao Yu, Xingwang Li, Guang He
No abstract text is available yet for this article.
August 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28452824/analysis-of-shared-homozygosity-regions-in-saudi-siblings-with-attention-deficit-hyperactivity-disorder
#15
Jameela M A Shinwari, Eman A A Al Yemni, Faten M Alnaemi, Dejene Abebe, Basma S Al-Abdulaziz, Bashayer R Al Mubarak, Mohammad Ghaziuddin, Nada A Al Tassan
AIM: Genetic and clinical complexities are common features of most psychiatric illnesses that pose a major obstacle in risk-gene identification. Attention deficit hyperactivity disorder (ADHD) is the most prevalent child-onset psychiatric illness, with high heritability. Over the past decade, numerous genetic studies utilizing various approaches, such as genome-wide association, candidate-gene association, and linkage analysis, have identified a multitude of candidate loci/genes. However, such studies have yielded diverse findings that are rarely reproduced, indicating that other genetic determinants have not been discovered yet...
August 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28430712/apolipoprotein-e-variants-and-genetic-susceptibility-to-combat-related-post-traumatic-stress-disorder-a-meta-analysis
#16
Yang Roby
BACKGROUND: Apolipoprotein E (APOE) has recently been studied as a risk factor for association with developing combat-related post-traumatic stress disorder (PTSD) in the military population. These studies have yielded inconsistent findings. The present study carried out a meta-analysis to establish whether the APOE polymorphism confers increased susceptibility to combat-related PTSD. METHODS: PubMed, Medline, Embase, PsycInfo, and Google Scholar were searched for potential publications relating to patients with PTSD in military settings with combat exposure...
August 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28368970/exploration-of-large-rare-copy-number-variants-associated-with-psychiatric-and-neurodevelopmental-disorders-in-individuals-with-anorexia-nervosa
#17
Zeynep Yilmaz, Jin P Szatkiewicz, James J Crowley, NaEshia Ancalade, Marek K Brandys, Annemarie van Elburg, Carolien G F de Kovel, Roger A H Adan, Anke Hinney, Johannes Hebebrand, Monica Gratacos, Fernando Fernandez-Aranda, Georgia Escaramis, Juan R Gonzalez, Xavier Estivill, Eleftheria Zeggini, Patrick F Sullivan, Cynthia M Bulik
Anorexia nervosa (AN) is a serious and heritable psychiatric disorder. To date, studies of copy number variants (CNVs) have been limited and inconclusive because of small sample sizes. We conducted a case-only genome-wide CNV survey in 1983 female AN cases included in the Genetic Consortium for Anorexia Nervosa. Following stringent quality control procedures, we investigated whether pathogenic CNVs in regions previously implicated in psychiatric and neurodevelopmental disorders were present in AN cases. We observed two instances of the well-established pathogenic CNVs in AN cases...
August 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28574862/the-role-of-micrornas-in-the-therapeutic-action-of-d-cycloserine-in-a-post-traumatic-stress-disorder-animal-model-an-exploratory-study
#18
Stefanie Malan-Müller, Lorren Fairbairn, Stephanie Hart, Willie M U Daniels, Mahjoubeh Jalali Sefid Dashti, Martin Kidd, Soraya Seedat, Junaid Gamieldien, Sîan M J Hemmings
OBJECTIVES: Post-traumatic stress disorder is characterized by impaired fear extinction and excessive anxiety. D-Cycloserine (DCS) has previously been shown to facilitate fear extinction and decrease anxiety in animal and human studies. This study utilized a contextual fear-conditioning animal model to investigate the involvement of microRNAs (miRNAs) in fear extinction and the reduction of anxiety, as mediated by the co-administration of DCS and behavioural fear extinction. METHODS: Fear conditioning consisted of an electric foot shock; fear extinction consisted of behavioural fear extinction co-administered with either DCS or saline...
June 1, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28346242/genetic-variation-in-gabr%C3%AE-1-and-the-risk-for-developing-alcohol-dependence
#19
William A McCabe, Michael J Way, Kush Ruparelia, Susanne Knapp, M Adam Ali, Quentin M Anstee, Howard C Thomas, Andrew McQuillin, Marsha Y Morgan
Associations between the γ-aminobutyric acid type-A receptors (GABAA) and alcohol dependence risk have been reported, although the receptor subunit driving the association is unclear. Recent work in mice has highlighted a possible role for variants in the Gabr β1 subunit (Gabrβ1) in alcohol dependence risk, although this gene does not contain any common nonsynonymous variants in humans. However, the GABAA receptor is a heteropentamer so multiple potential variants within the gene complex could generate the alcohol dependence phenotype...
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28272116/l-methylfolate-supplementation-in-a-child-with-autism-and-methyltetrahydrofolate-reductase-enzyme-gene-c677tt-allele
#20
Kim S Siscoe, W David Lohr
Errors in folate metabolism may play a role in the pathology of autism spectrum disorders because of increased vulnerability to oxidative stress. We report a case where L-methylfolate supplementation improved symptoms of aggression and disruptive behavior in a child with autism who tested positive for the C677TT allele of the methyltetrahydrofolate reductase enzyme gene. To our knowledge, this is the first report of L-methylfolate administration in this situation. Further controlled studies of L-methylfolate in this population are warranted...
June 2017: Psychiatric Genetics
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