Digital Commons Network^™

Exploring Resilience Models In A Sample Of Combat-Exposed Military Service Members And Veterans: A Comparison And Commentary, Christina M. Sheerin, Kelcey J. Stratton, Ananda B. Amstadter, The Va Mid-Atlantic Mental Illness Research, Education, Clinical Center (Mirecc) Workgroup, Scott D. Mcdonald

Psychiatry Publications

Background: The term resilience is applied in numerous ways in the mental health field, leading to different perspectives of what constitutes a resilient response and disparate findings regarding its prevalence following trauma.

Objective: illustrate the impact of various definitions on our understanding and prevalence of resilience, we compared various resilience definitions (absence of PTSD, absence of current mental health diagnosis, absence of generalized psychological distress, and an alternative trauma load–resilience discrepancy model of the difference between actual and predicted distress given lifetime trauma exposure) within a combat-exposed military personnel and veteran sample.

Method: In this combat-trauma exposed …

The Association Between Childhood Adversities And Subsequent First Onset Of Psychotic Experiences: A Cross-National Analysis Of 23 998 Respondents From 17 Countries, J. J. Mcgrath, K. A. Mclaughlin, S. Saha, S. Aguilar-Gaxiola, A. Al-Hamzawi, J. Alonso, R. Bruffaerts, G. De Girolamo, P. De Jonge, O. Esan, S. Florescu, O. Gureje, J. M. Haro, C. Hu, E. G. Karam, V. Kovess-Masfety, S. Lee, J. P. Lepine, C. C. W. Lim, M. E. Medina-Mora, Z. Mneimneh, B. E. Pennell, M. Piazza, J. Posada-Villa, N. Sampson, M. C. Viana, M. Xavier, E. J. Bromet, K. S. Kendler, R. C. Kessler, Who World Mental Health Survey Collaborators

Psychiatry Publications

Although there is robust evidence linking childhood adversities (CAs) and an increased risk for psychotic experiences (PEs), little is known about whether these associations vary across the life-course and whether mental disorders that emerge prior to PEs explain these associations.

We assessed CAs, PEs and DSM-IV mental disorders in 23 998 adults in the WHO World Mental Health Surveys. Discrete-time survival analysis was used to investigate the associations between CAs and PEs, and the influence of mental disorders on these associations using multivariate logistic models.

Exposure to CAs was common, and those who experienced any CAs had increased odds of …

Symptom Domain Groups Of The Patient-Reported Outcomes Measurement Information System Tools Independently Predict Hospitalizations And Re-Hospitalizations In Cirrhosis, Kavish R. Patidar, Leroy R. Thacker, James B. Wade, Melanie B. White, Edith A. Gavis, Andrew Fagan, Richard K. Sterling, Michael Fuchs, Mohammad S. Siddiqui, Scott Matherly, Richard T. Stravitz, Arun J. Sanyal, Puneet Puri, Velimir A. Luketic, Jasmohan S. Bajaj

Psychiatry Publications

Background

Patient-Reported Outcomes Measurement Information System (PROMIS) tools can identify health-related quality of life (HRQOL) domains that could differentially affect disease progression. Cirrhotics are highly prone to hospitalizations and re-hospitalizations, but the current clinical prognostic models may be insufficient, and thus studying the contribution of individual HRQOL domains could improve prognostication.

Aim

Analyze the impact of individual HRQOL PROMIS domains in predicting time to all non-elective hospitalizations and re-hospitalizations in cirrhosis.

Methods

Outpatient cirrhotics were administered PROMIS computerized tools. The first non-elective hospitalization and subsequent re-hospitalizations after enrollment were recorded. Individual PROMIS domains significantly contributing toward these outcomes were generated …

Electroconvulsive Therapy In Geriatric Patients: A Literature Review And Program Report From Virginia Commonwealth University, Richmond, Virginia, Usa, Andrew D. Snyder, Vasu Venkatachalam, Ananda Pandurangi

Psychiatry Publications

Electroconvulsive therapy (ECT) is an effective therapeutic intervention in the elderly patients with major depression, especially those with psychosis, suicidality, catatonia, nutritional compromise, and resistance to medications. Response rates can be as high as 80%. We present an extensive review of the relevant literature, provide a description of the ECT program at Virginia Commonwealth University in Richmond, Virginia, USA, and present results of our experience with ECT in fifty elderly patients. The treatments were safe, well tolerated, and produced high response rates, variably between 68% and 84%. Patients in the long‑term maintenance ECT program continue to show sustained benefits from …

Major Depression As A Complex Dynamic System, Angélique O. J. Cramer, Claudia D. Van Borkulo, Erik J. Giltay, Han L. J. Van Der Maas, Kenneth S. Kendler, Marten Scheffer, Denny Borsboom

Psychiatry Publications

In this paper, we characterize major depression (MD) as a complex dynamic system in which symptoms (e.g., insomnia and fatigue) are directly connected to one another in a network structure. We hypothesize that individuals can be characterized by their own network with unique architecture and resulting dynamics. With respect to architecture, we show that individuals vulnerable to developing MD are those with strong connections between symptoms: e.g., only one night of poor sleep suffices to make a particular person feel tired. Such vulnerable networks, when pushed by forces external to the system such as stress, are more likely to end …

Substance Use And Depression Symptomatology: Measurement Invariance Of The Beck Depression Inventory (Bdi-Ii) Among Non-Users And Frequent-Users Of Alcohol, Nicotine And Cannabis, Ashlee A. Moore, Michael C. Neale, Judy L. Silberg, Brad Verhulst

Psychiatry Publications

Depression is a highly heterogeneous condition, and identifying how symptoms present in various groups may greatly increase our understanding of its etiology. Importantly, Major Depressive Disorder is strongly linked with Substance Use Disorders, which may ameliorate or exacerbate specific depression symptoms. It is therefore quite plausible that depression may present with different symptom profiles depending on an individual’s substance use status. Given these observations, it is important to examine the underlying construct of depression in groups of substance users compared to non-users. In this study we use a non-clinical sample to examine the measurement structure of the Beck Depression Inventory …

Integrating Basic Research With Prevention/Intervention To Reduce Risky Substance Use Among College Students, Danielle M. Dick, Linda C. Hancock

Psychiatry Publications

Too often basic research on etiological processes that contribute to substance use outcomes is disconnected from efforts to develop prevention and intervention programming. Substance use on college campuses is an area of concern where translational efforts that bring together basic scientists and prevention/intervention practitioners have potential for high impact. We describe an effort at a large, public, urban university in the United States to bring together researchers across the campus with expertise in college behavioral health with university administration and health/wellness practitioners to address college student substance use and mental health. The project “Spit for Science” examines how genetic and …

Stress Reactivity To An Electronic Version Of The Trier Social Stress Test: A Pilot Study, Sage E. Hawn, Lisa Paul, Suzanne Thomas, Stephanie Miller, Ananda B. Amstadter

Psychiatry Publications

Social stressors that rely on the inclusion of confederates (i.e., Trier Social Stress Test, TSST) are often used in clinical laboratory research paradigms to elicit a measurable stress response in participants. Although effective, the TSST is labor intensive and may introduce error variance as a function of confederate race, gender, and/or response characteristics. The present study aimed to develop and validate an electronic version of the TSST (e-TSST). The primary aim was to compare the e-TSST to an e-neutral control condition; the exploratory aim was to compare the magnitude of stress response elicited by the e-TSST to that elicited by …

Stress Reactivity To An Electronic Version Of The Trier Social Stress Test: A Pilot Study, Sage E. Hawn, Lisa Paul, Suzanne Thomas, Stephanie Miller, Ananda B. Amstadler

Psychiatry Publications

Social stressors that rely on the inclusion of confederates (i.e., Trier Social Stress Test, TSST) are often used in clinical laboratory research paradigms to elicit a measurable stress response in participants. Although effective, the TSST is labor intensive and may introduce error variance as a function of confederate race, gender, and/or response characteristics. The present study aimed to develop and validate an electronic version of the TSST (e-TSST). The primary aim was to compare the e-TSST to an e-neutral control condition; the exploratory aim was to compare the magnitude of stress response elicited by the e-TSST to that elicited by …

The Glucagon-Like Peptide-1 Receptor As A Potential Treatment Target In Alcohol Use Disorder: Evidence From Human Genetic Association Studies And A Mouse Model Of Alcohol Dependence, P. Suchankova, J. Yan, M. L. Schwandt, B. L. Stangl, E. C. Caparelli, R. Momenan, E. Jerlhag, J. A. Engel, C. A. Hodgkinson, M. Egli, M. F. Lopez, H. C. Becker, D. Goldman, M. Heilig, V. A. Ramchandani, L. Leggio

Psychiatry Publications

The hormone glucagon-like peptide-1 (GLP-1) regulates appetite and food intake. GLP-1 receptor (GLP-1R) activation also attenuates the reinforcing properties of alcohol in rodents. The present translational study is based on four human genetic association studies and one preclinical study providing data that support the hypothesis that GLP-1R may have a role in the pathophysiology of alcohol use disorder (AUD). Case–control analysis (N=908) was performed on a sample of individuals enrolled in the National Institute on Alcohol Abuse and Alcoholism (NIAAA) intramural research program. The Study of Addiction: Genetics and Environment (SAGE) sample (N=3803) was used for …

Qtc Prolongation In Veterans With Heroin Dependence On Methadone Maintenance Treatment, Sameer Hassamal, Antony Fernandez, Hossein Moradi Rekabdarkolaee, Ananda Pandurangi

Psychiatry Publications

Background:

QTc prolongation and Torsade de Ppointes have been reported in patients on methadone maintenance.

Objectives:

In this study, QTc was compared before and after the veteran (n = 49) was on a stable dosage of methadone for 8.72 ± 4.50 years to treat heroin dependence. Risk factors were correlated with the QTc once the veteran was on a stable dose of methadone. Differences in the clinical risk factors in subgroups of veterans with below and above mean QTc change was compared.

Patients and Methods:

ECG data was obtained from a 12-lead electrocardiogram (pre-methadone and on methadone) on 49 veterans. …

Integrating Basic Research With Prevention/Intervention To Reduce Risky Substance Use Among College Students, Danielle Dick, Linda C. Hancock

Psychiatry Publications

Too often basic research on etiological processes that contribute to substance use outcomes is disconnected from efforts to develop prevention and intervention programming. Substance use on college campuses is an area of concern where translational efforts that bring together basic scientists and prevention/intervention practitioners have potential for high impact. We describe an effort at a large, public, urban university in the United States to bring together researchers across the campus with expertise in college behavioral health with university administration and health/wellness practitioners to address college student substance use and mental health. The project “Spit for Science” examines how genetic and …

A Brief Analysis Of Suicide Methods And Trends In Virginia From 2003 To 2012, Sameer Hassamal, Lori Keyser-Marcus, Ericka Crouse Breden, Kathrin Hobron, Atit Bhattachan, Ananda Pandurangi

Psychiatry Publications

Background. The objective is to analyze and compare Virginia suicide data from 2003 to 2012 to US suicide data. Methods. Suicide trends by method, age, gender, and race were obtained from Virginia’s Office of the Chief Medical Examiner’s annual reports. Results. Similar to US suicide rates, suicide rates in Virginia increased between 2003 and 2012 from 10.9/100,000 people to 12.9/100,000 people. The most common methods were firearm, asphyxia, and intentional drug overdose, respectively. The increase in asphyxia (𝑟 = 0.77, 𝑃 ≤ 0.01) and decrease in CO poisoning (𝑟 = −0.89, 𝑃 ≤ 0.01) were significant. Unlike national trends, intentional …

Genome-Wide And Gene-Based Association Studies Of Anxiety Disorders In European And African American Samples, Takeshi Otowa, Brion S. Maher, Steven H. Aggen, Joseph L. Mcclay, Edwin J. Van Den Oord, John M. Hettema

Psychiatry Publications

Anxiety disorders (ADs) are common mental disorders caused by a combination of genetic and environmental factors. Since ADs are highly comorbid with each other, partially due to shared genetic basis, studying AD phenotypes in a coordinated manner may be a powerful strategy for identifying potential genetic loci for ADs. To detect these loci, we performed genome-wide association studies (GWAS) of ADs. In addition, as a complementary approach to single-locus analysis, we also conducted gene- and pathway-based analyses. GWAS data were derived from the control sample of the Molecular Genetics of Schizophrenia (MGS) project (2,540 European American and 849 African American …

Socioeconomic And Demographic Factors Modify The Association Between Informal Caregiving And Health In The Sandwich Generation, Elizabeth K. Do, Steven A. Cohen, Monique J. Brown

Psychiatry Publications

Background Nearly 50 million Americans provide informal care to an older relative or friend. Many are members of the “sandwich generation”, providing care for elderly parents and children simultaneously. Although evidence suggests that the negative health consequences of caregiving are more severe for sandwiched caregivers, little is known about how these associations vary by sociodemographic factors.

Methods We abstracted data from the Behavioral Risk Factor Surveillance System to determine how the association between caregiving and health varies by sociodemographic factors, using ordinal logistic regression with interaction terms and stratification by number of children, income, and race/ethnicity.

Results The association between …

Smoking And Major Depressive Disorder In Chinese Women, Qiang He, Lei Yang, Shenxun Shi, Jingfang Gao, Ming Tao, Kerang Zhang, Chengge Gao, Lijun Yang, Kan Li, Jianguo Shi, Gang Wang, Lanfen Liu, Jinbei Zhang, Bo Du, Guoqing Jiang, Jianhua Shen, Zhen Zhang, Wei Liang, Jing Sun, Jian Hu, Tiebang Liu, Xueyi Wang, Guodong Miao, Huaqing Meng, Yi Li, Chunmei Hu, Yi Li, Guoping Huang, Gongying Li, Baowei Ha, Hong Deng, Qiyi Mei, Hui Zhong, Shugui Gao, Hong Sang, Yutang Zhang, Xiang Fang, Fengyu Yu, Donglin Yang, Tieqiao Liu, Yunchun Chen, Xiaohong Hong, Wenyuan Wu, Guibing Chen, Min Cai, Yan Song, Jiyang Pan, Jicheng Dong, Runde Pan, Wei Zhang, Zhenming Shen, Zhengrong Liu, Danhua Gu, Xiaoping Wang, Ying Liu, Xiaojuan Liu, Qiwen Zhang, Yihan Li, Yiping Chen, Kenneth S. Kendler, Xumei Wang, Youhui Li, Jonathan Flint

Psychiatry Publications

Objective

To investigate the risk factors that contribute to smoking in female patients with major depressive disorder (MDD) and the clinical features in depressed smokers.

Methods

We examined the smoking status and clinical features in 6120 Han Chinese women with MDD (DSM-IV) between 30 and 60 years of age across China. Logistic regression was used to determine the association between clinical features of MDD and smoking status and between risk factors for MDD and smoking status.

Results

Among the recurrent MDD patients there were 216(3.6%) current smokers, 117 (2.0%) former smokers and 333(5.6%) lifetime smokers. Lifetime smokers had a slightly …

Associations Of Educational Attainment, Occupation, Social Class And Major Depressive Disorder Among Han Chinese Women, Jianguo Shi, Yan Zhang, Feihu Liu, Yajuan Li, Junhui Wang, Jonathan Flint, Jingfang Gao, Youhui Li, Ming Tao, Kerang Zhang, Xumei Wang, Chengge Gao, Lijun Yang, Kan Li, Shenxun Shi, Gang Wang, Lanfen Liu, Jinbei Zhang, Bo Du, Guoqing Jiang, Jianhua Shen, Zhen Zhang, Wei Liang, Jing Sun, Jian Hu, Tiebang Liu, Xueyi Wang, Guodong Miao, Huaqing Meng, Yi Li, Chunmei Hu, Yi Li, Guoping Huang, Gongying Li, Baowei Ha, Hong Deng, Qiyi Mei, Hui Zhong, Shugui Gao, Hong Sang, Yutang Zhang, Xiang Fang, Fengyu Yu, Donglin Yang, Tieqiao Liu, Yunchun Chen, Xiaohong Hong, Wenyuan Wu, Guibing Chen, Min Cai, Yan Song, Jiyang Pan, Jicheng Dong, Runde Pan, Wei Zhang, Zhenming Shen, Zhengrong Liu, Danhua Gu, Xiaoping Wang, Xiaojuan Liu, Qiwen Zhang, Yihan Li, Yiping Chen, Kenneth S. Kendler

Psychiatry Publications

Background

The prevalence of major depressive disorder (MDD) is higher in those with low levels of educational attainment, the unemployed and those with low social status. However the extent to which these factors cause MDD is unclear. Most of the available data comes from studies in developed countries, and these findings may not extrapolate to developing countries. Examining the relationship between MDD and socio economic status in China is likely to add to the debate because of the radical economic and social changes occurring in China over the last 30 years.

Principal findings

We report results from 3,639 Chinese women …

Childhood Sexual Abuse And The Development Of Recurrent Major Depression In Chinese Women, Jing Chen, Yiyun Cai, Enzhao Cong, Ying Liu, Jingfang Gao, Youhui Li, Ming Tao, Kerang Zhang, Xumei Wang, Chengge Gao, Lijun Yang, Kan Li, Jianguo Shi, Gang Wang, Lanfen Liu, Jinbei Zhang, Bo Du, Guoqing Jiang, Jianhua Shen, Zhen Zhang, Wei Liang, Jing Sun, Jian Hu, Tiebang Liu, Xueyi Wang, Guodong Miao, Huaqing Meng, Yi Li, Guoping Huang, Gongying Li, Baowei Ha, Hong Deng, Qiyi Mei, Hui Zhong, Shugui Gao, Hong Sang, Yutang Zhang, Xiang Fang, Fengyu Yu, Donglin Yang, Tieqiao Liu, Yunchun Chen, Xiaohong Hong, Danhua Gu, Xiaoping Wang, Xiaojuan Liu, Qiwen Zhang, Yihan Li, Yiping Chen, Kenneth S. Kendler, Shenxun Shi, Jonathan Flint

Psychiatry Publications

Background

Our prior study in Han Chinese women has shown that women with a history of childhood sexual abuse (CSA) are at increased risk for developing major depression (MD). Would this relationship be found in our whole data set?

Method

Three levels of CSA (non-genital, genital, and intercourse) were assessed by self-report in two groups of Han Chinese women: 6017 clinically ascertained with recurrent MD and 5983 matched controls. Diagnostic and other risk factor information was assessed at personal interview. Odds ratios (ORs) were calculated by logistic regression.

Results

We confirmed earlier results by replicating prior analyses in 3,950 new …

Association Study Of 167 Candidate Genes For Schizophrenia Selected By A Multi-Domain Evidence-Based Prioritization Algorithm And Neurodevelopmental Hypothesis, Zhongming Zhao, Bradley T. Webb, Peilin Jia, T. Bernard Bigdeli, Brion S. Maher, Edwin Van Den Oord, Sarah Bergen, Richard L. Amdur, Francis A. O'Neill, Dermot Walsh, Dawn L. Thiselton, Xianging Chen, Carlos N. Pato, The International Schizophrenia Consortium, Brien P. Riley, Kenneth S. Kendler, Ayman H. Fanous

Psychiatry Publications

Integrating evidence from multiple domains is useful in prioritizing disease candidate genes for subsequent testing. We ranked all known human genes (n = 3819) under linkage peaks in the Irish Study of High-Density Schizophrenia Families using three different evidence domains: 1) a meta-analysis of microarray gene expression results using the Stanley Brain collection, 2) a schizophrenia protein-protein interaction network, and 3) a systematic literature search. Each gene was assigned a domain-specific p-value and ranked after evaluating the evidence within each domain. For comparison to this ranking process, a large-scale candidate gene hypothesis was also tested by including genes with Gene …

Network-Assisted Investigation Of Combined Causal Signals From Genome-Wide Association Studies In Schizophrenia, Peilin Jia, Lily Wang, Ayman H. Fanous, Carlos N. Pato, Todd L. Edwards, Zhongming Zhao

Psychiatry Publications

With the recent success of genome-wide association studies (GWAS), a wealth of association data has been accomplished for more than 200 complex diseases/traits, proposing a strong demand for data integration and interpretation. A combinatory analysis of multiple GWAS datasets, or an integrative analysis of GWAS data and other high-throughput data, has been particularly promising. In this study, we proposed an integrative analysis framework of multiple GWAS datasets by overlaying association signals onto the protein-protein interaction network, and demonstrated it using schizophrenia datasets. Building on a dense module search algorithm, we first searched for significantly enriched subnetworks for schizophrenia in each …

The Interleukin 3 Gene (Il3) Contributes To Human Brain Volume Variation By Regulating Proliferation And Survival Of Neural Progenitors, Xiao-Jian Luo, Ming Li, Liang Huang, Khwangsik Nho, Min Deng, Qiang Chen, Daniel R. Weinberger, Alejandro A. Vasquez, Mark Rijpkema, Venkata S. Mattay, Andrew J. Saykin, Li Shen, Guillen Fernandez, Barbara Franke, Jing-Chun Chen, Xiang-Ning Chen, Jin-Kai Wang, Xiao Xiao, Xue-Bin Qi, Kun Xiang, Ying-Mei Peng, Xiang-Yu Cao, Yi Li, Xiao-Dong Shi, Lin Gan, Bing Su

Psychiatry Publications

One of the most significant evolutionary changes underlying the highly developed cognitive abilities of humans is the greatly enlarged brain volume. In addition to being far greater than in most other species, the volume of the human brain exhibits extensive variation and distinct sexual dimorphism in the general population. However, little is known about the genetic mechanisms underlying normal variation as well as the observed sex difference in human brain volume. Here we show that interleukin-3 (IL3) is strongly associated with brain volume variation in four genetically divergent populations. We identified a sequence polymorphism (rs31480) in the IL3 promoter which …

Variants Located Upstream Of Chrnb4 On Chromosome 15q25.1 Are Associated With Age At Onset Of Daily Smoking And Habitual Smoking, Manav Kapoor, Jen-Chyong Wang, Sarah Bertelsen, Kathy Bucholz, John P. Budde, Anthony Hinrichs, Arpana Agrawal, Andrew Brooks, David Chorlian, Danielle Dick, Victor Hesselbrock, Tatiana Foroud, John Kramer, Sammuel Kuperman, Niklas Manz, John Numberger Jr, Bernice Porjesz, John Rice, Jay Tischfield, Xiaoling Xuei, Marc Schuckit, Haward J. Edenberg, Laura J. Bierut, Alison M. Goate

Psychiatry Publications

Several genome-wide association and candidate gene studies have linked chromosome 15q24–q25.1 (a region including the CHRNA5-CHRNA3-CHRNB4 gene cluster) with alcohol dependence, nicotine dependence and smoking-related illnesses such as lung cancer and chronic obstructive pulmonary disease. To further examine the impact of these genes on the development of substance use disorders, we tested whether variants within and flanking theCHRNA5-CHRNA3-CHRNB4 gene cluster affect the transition to daily smoking (individuals who smoked cigarettes 4 or more days per week) in a cross sectional sample of adolescents and young adults from the COGA (Collaborative Study of the Genetics of Alcoholism) families. Subjects were …

Corticotrophin-Releasing Hormone Type 1 Receptor Gene (Crhr1) Variants Predict Posttraumatic Stress Disorder Onset And Course In Pediatric Injury Patients, Ananda B. Amstadler, Nicole R. Nugent, Bao-Zhu Yang, Alisa Miller, Richie Siburian, Priya Moorjani, Stephen Haddad, Aditi Basu, Jesen Fagerness, Glenn Saxe, Jordan W. Smoller, Karestan C. Koenen

Psychiatry Publications

Posttraumatic stress disorder (PTSD) is a common and disabling anxiety disorder that may occur in the aftermath of exposure to potentially traumatic life events. PTSD is moderately heritable, but few specific molecular variants accounting for this heritability have been identified. Genes regulating the hypothalamic-pituitary-adrenal (HPA) axis, such as corticotrophin-releasing hormone type 1 receptor gene (CRHR1), have been implicated in traumatic-stress related phenotypes but have yet to be studied in relation to PTSD. The present study sought to examine the relation between 9 single nucleotide polymorphisms (SNPs) in the CRHR1 gene and posttraumatic stress symptoms in a prospective study of pediatric …

Acsl6 Is Associated With The Number Of Cigarettes Smoked And Its Expression Is Altered By Chronic Nicotine Exposure, Jingchun Chen, Darlene H. Brunzell, Kia J. Jackson, Andrew Van Der Vaart, Jennie Z. Ma, Thomas J. Payne, Richard Sherva, Lindsay A. Farrer, Pablo Gejman, Douglas F. Levinson, Peter Holmans, Steven H. Aggen, Imad Damaj, Po-Hsiu Kuo, Bradley T. Webb, Raymond Anton, Henry R. Kranzler, Joel Gelemter, Minf D. Li, Kenneth S. Kendler, Xiangning Chen

Psychiatry Publications

Individuals with schizophrenia tend to be heavy smokers and are at high risk for tobacco dependence. However, the nature of the comorbidity is not entirely clear. We previously reported evidence for association of schizophrenia with SNPs and SNP haplotypes in a region of chromosome 5q containing the SPEC2, PDZ-GEF2 and ACSL6 genes. In this current study, analysis of the control subjects of the Molecular Genetics of Schizophrenia (MGS) sample showed similar pattern of association with number of cigarettes smoked per day (numCIG) for the same region. To further test if this locus is associated with tobacco smoking as measured …

Genome-Wide Gene-Environment Study Identifies Glutamate Receptor Gene Grin2a As A Parkinson's Disease Modifier Gene Via Interaction With Coffee, Taye H. Hamza, Honglei Chen, Erin M. Hill-Burns, Shannon L. Rhodes, Jennifer Montimurro, Denise M. Kay, Albert Tenesa, Victoria I. Kusel, Patricia Sheehan, Muthukrishnan Eaaswarkhanth, Dora Yearout, Ali Samii, John W. Roberts, Pinky Agarwal, Yvette Bordelon, Yikyung Park, Liyong Wang, Jianjun Gao, Jeffery M. Vance, Kenneth S. Kendler, Silviu-Alin Bacanu, William K. Scott, Beate Ritz, John Nutt, Stweart A. Factor, Cyrus P. Zabetian, Haydeh Payami

Psychiatry Publications

Our aim was to identify genes that influence the inverse association of coffee with the risk of developing Parkinson's disease (PD). We used genome-wide genotype data and lifetime caffeinated-coffee-consumption data on 1,458 persons with PD and 931 without PD from the NeuroGenetics Research Consortium (NGRC), and we performed a genome-wide association and interaction study (GWAIS), testing each SNP's main-effect plus its interaction with coffee, adjusting for sex, age, and two principal components. We then stratified subjects as heavy or light coffee-drinkers and performed genome-wide association study (GWAS) in each group. We replicated the most significant SNP. Finally, we imputed the …

Genome-Wide Association Identifies A Common Variant In The Reelin Gene That Increases The Risk Of Schizophrenia Only In Women, Sagiv Shifman, Martina Johannesson, Michal Bronstein, Sam X. Chen, David A. Collier, Nicholas J. Craddock, Kenneth S. Kendler, Tao Li, Michael C. O'Donovan, F. Anthony O'Neill, Michael J. Owen, Dermot Walsh, Daniel R. Weinberger, Cuie Sun, Jonathan Flint, Ariel Darvasi

Psychiatry Publications

Sex differences in schizophrenia are well known, but their genetic basis has not been identified. We performed a genome-wide association scan for schizophrenia in an Ashkenazi Jewish population using DNA pooling. We found a female-specific association with rs7341475, a SNP in the fourth intron of the reelin (RELN) gene (p = 2.9 × 10−5 in women), with a significant gene-sex effect (p = 1.8 × 10−4). We studied rs7341475 in four additional populations, totaling 2,274 cases and 4,401 controls. A significant effect was observed only in women, replicating the initial result (p = 2.1 × 10−3 in …