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Psychiatric Genetics

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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
#1
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...
July 28, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28737528/genetic-variants-of-increased-waist-circumference-in-psychosis
#2
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...
July 21, 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
#3
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...
June 6, 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
#4
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/28570395/runs-of-homozygosity-copy-number-variation-and-risk-for-depression-and-suicidal-behavior-in-an-arab-bedouin-kindred
#5
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...
May 31, 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
#6
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)...
May 31, 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
#7
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.
May 30, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28658089/no-association-of-grik4-polymorphisms-with-schizophrenia-in-the-chinese-han-population
#8
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
#9
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
#10
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
#11
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/28346242/genetic-variation-in-gabr%C3%AE-1-and-the-risk-for-developing-alcohol-dependence
#12
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
#13
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
https://www.readbyqxmd.com/read/28272115/further-evidence-for-genetic-variation-at-the-serotonin-transporter-gene-slc6a4-contributing-toward-anxiety
#14
Andreas J Forstner, Stefanie Rambau, Nina Friedrich, Kerstin U Ludwig, Anne C Böhmer, Elisabeth Mangold, Anna Maaser, Timo Hess, Alexandra Kleiman, Antje Bittner, Markus M Nöthen, Jessica Becker, Franziska Geiser, Johannes Schumacher, Rupert Conrad
OBJECTIVES: Social anxiety disorder (SAD) is a common and heritable psychiatric disorder. However, genetic studies in SAD are rare and only a few candidate genes have been implicated so far. In the present study, we investigated whether single-nucleotide polymorphisms (SNPs) associated with other psychiatric disorders also contribute toward the development of SAD and followed up variants associated with SAD on the phenotypic level. PATIENTS AND METHODS: We genotyped a total of 24 SNPs in a German sample of 321 SAD patients and 804 controls...
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28230711/asperger-syndrome-and-early-onset-schizophrenia-associated-with-a-novel-mecp2-deleterious-missense-variant
#15
Aurore Curie, Gaëtan Lesca, Gérald Bussy, Sabine Manificat, Valérie Arnaud, Sibylle Gonzalez, Olivier Revol, Alain Calender, Daniel Gérard, Vincent des Portes
Methyl-CpG-binding protein 2 (MECP2) deleterious variants, which are responsible for Rett syndrome in girls, are involved in a wide spectrum of developmental disabilities in males. A neuropsychiatric phenotype without intellectual disability is uncommon in patients with MECP2 deleterious variants. We report on two dizygotic twins with an MECP2-related psychiatric disorder without intellectual disability. Neuropsychological and psychiatric phenotype assessments were performed, and a genetic analysis was carried out...
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28225367/progranulin-gene-variation-affects-serum-progranulin-levels-differently-in-danish-bipolar-individuals-compared-with-healthy-controls
#16
Henriette N Buttenschøn, Marit N Nielsen, Gangadaar Thotakura, Chris W Lee, Anders Nykjær, Ole Mors, Simon Glerup
OBJECTIVES: The identification of peripheral biomarkers for bipolar disorder is of great importance and has the potential to improve diagnosis, treatment and prognosis. Recent studies have reported lower plasma progranulin levels in bipolar individuals compared with controls and association with single nucleotide polymorphisms (SNPs) within the progranulin gene (GRN). In the present study, we investigated the effect of GRN and sortilin (SORT1) gene variation on serum progranulin levels in bipolar individuals and controls...
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28178086/identification-of-rare-nonsynonymous-variants-in-syne1-cpg2-in-bipolar-affective-disorder
#17
Sally Isabel Sharp, Jenny Lange, Radhika Kandaswamy, Mazen Daher, Adebayo Anjorin, Nicholas James Bass, Andrew McQuillin
BACKGROUND: Bipolar affective disorder (BPD) is a severe mood disorder with a prevalence of ∼1.5% in the population. The pathogenesis of BPD is poorly understood; however, a strong heritable component has been identified. Previous genome-wide association studies have indicated a region on 6q25, coding for the SYNE1 gene, which increases disease susceptibility. SYNE1 encodes the synaptic nuclear envelope protein-1, nesprin-1. A brain-specific splice variant of SYNE1, CPG2 encoding candidate plasticity gene 2, has been identified...
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28118293/common-variants-in-slc6a2-slc6a3-drd2-and-major-depressive-disorder-an-association-study-in-the-chinese-han-population
#18
Yan Bi, Xiaoye Huang, Weibo Niu, Shiqing Chen, Xi Wu, Yanfei Cao, Rui Zhang, Fengping Yang, Lu Wang, Weidong Li, Yifeng Xu, Lin He, Tao Yu, Guang He, Xingwang Li
No abstract text is available yet for this article.
June 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28212207/summaries-of-plenary-and-selected-symposia-sessions-at-the-xxiv-world-congress-of-psychiatric-genetics-jerusalem-israel-30-october-2016-3-november-2016
#19
Liliana G Ciobanu, Anil P S Ori, Luca Pagliaroli, Renato Polimanti, Leticia M Spindola, John B Vincent, Freida K Cormack
The XXII World Congress of Psychiatric Genetics, sponsored by the International Society of Psychiatric Genetics, took place in Jerusalem, Israel, from 30 October 2016 to 3 November 2016. A total of 372 participants gathered to discuss the latest findings in the field. The following report was written by early career investigator travel awardees, and student and postdoctoral attendees. Each was assigned one or more sessions as a rapporteur. This manuscript represents topics covered in most, but not all of the presentations during the conference, and contains some of the major notable new findings reported...
April 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28187106/association-between-nat2-polymorphisms-and-the-risk-of-schizophrenia-in-a-northern-chinese-han-population
#20
Zhilin Luan, Tianlan Lu, Weihua Yue, Sjef Copray, Dai Zhang
The gene that encodes N-acetyltransferase 2 (NAT2), an enzyme that plays a crucial role in the metabolism of many drugs and xenobiotics, is located on chromosome 8p22, one of the most convictive susceptibility loci of schizophrenia. NAT2 genetic polymorphisms lead to various enzyme acetylation phenotypes. In the present study, six selected NAT2 exonic single nucleotide polymorphisms were genotyped in an independent case-control sample of a Northern Chinese Han population to verify the possible association between NAT2 and schizophrenia...
April 2017: Psychiatric Genetics
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