11 results match your criteria: "The Douglas Hospital Research Centre[Affiliation]"

Background: Early life adversity and psychiatric disorders are associated with earlier declines in neurocognitive abilities during adulthood. These declines may be preceded by changes in biological aging, specifically epigenetic age acceleration, providing an opportunity to uncover genome-wide biomarkers that identify individuals most likely to benefit from early screening and prevention.

Methods: Five unique epigenetic age acceleration clocks derived from peripheral blood were examined in relation to latent variables of general and speeded cognitive abilities across two independent cohorts: 1) the Female Growth and Development Study (FGDS;  = 86), a 30-year prospective cohort study of substantiated child sexual abuse and non-abused controls, and 2) the Biological Classification of Mental Disorders study (BeCOME;  = 313), an adult community cohort established based on psychiatric disorders.

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Objectives: Deviations from normative trajectories of receptive language abilities following early life adversity (ELA) may indicate an elevated risk for advanced cognitive aging and related morbidities. Accelerated epigenetic aging at midlife may further identify those at greatest risk for advanced cognitive aging following ELA. We examined whether accelerations in epigenetic aging at midlife can identify those individuals who demonstrated the greatest change in receptive language abilities following ELA.

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Lasting changes in the hypothalamic-pituitary-adrenal (HPA) axis are a potential indication of the biological embedding of early life adversity, yet, prospective and repeatedly collected data are needed to confirm this relation. Likewise, integrating information from multiple biological systems, such as the HPA axis and the epigenome, has the potential to identify individuals with enhanced embedding of early life adversity. The current study reports results from the Female Growth and Development Study, a 30-year prospective cohort study of childhood sexual abuse (CSA).

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Randomness and nondeterminism: from genes to free will with implications for psychiatry.

J Psychiatry Neurosci

August 2021

From the Department of Psychiatry, McGill University, Montreal, Que., Canada (Joober, Karama); and the Douglas Hospital Research Centre, Montreal, Que., Canada (Joober, Karama).

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Objective: Child maltreatment is among the strongest predictors of posttraumatic stress disorder (PTSD). However, less than 40% of children who have been maltreated are ever diagnosed with PTSD, suggesting that exposure to child maltreatment alone is insufficient to explain this risk. This study examined whether epigenetic age acceleration, a stress-sensitive biomarker derived from DNA methylation, explains variation in PTSD diagnostic status subsequent to child maltreatment.

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Diabetes increases the risk of depression: A systematic review, meta-analysis and estimates of population attributable fractions based on prospective studies.

Prev Med Rep

June 2019

University of Saskatchewan, Department of Psychiatry and, School of Public Health, 103 Hospital drive, Ellis Hall, Room 107, Saskatoon, SK S7N 0W8, Canada.

We aim to examine the relationship between diabetes and depression risk in longitudinal cohort studies and by how much the incidence of depression in a population would be reduced if diabetes was reduced. Medline/PubMed, EMBASE, PsycINFO, and Cochrane Library databases were searched for English-language published literature from January 1990 to December 2017. Longitudinal studies with criteria for depression and self-report doctors' diagnoses or diagnostic blood test measurement of diabetes were assessed.

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Background And Aims: Previous research on supported housing for people with serious mental illness focuses primarily on tenant/client experiences. The aim of this article is to present families' perspectives on the role of supported housing in recovery, utilizing the CHIME framework of personal recovery.

Method: Qualitative interviews were conducted with 14 families of individuals with serious mental illness living in supported housing.

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Objectives: The aim of this study was to determine the respective contribution of professional characteristics, team attributes, team processes, and team emergent states on the job satisfaction of 315 mental health professionals from Quebec (Canada).

Methods: Job satisfaction was measured with the Job Satisfaction Survey. Independent variables were organized into four categories according to a conceptual framework inspired from the Input-Mediator-Outcomes-Input Model.

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Objective: Hundreds of scientific publications are produced annually that involve the measurement of cortisol in saliva. Intra- and inter-laboratory variation in salivary cortisol results has the potential to contribute to cross-study inconsistencies in findings, and the perception that salivary cortisol results are unreliable. This study rigorously estimates sources of measurement variability in the assay of salivary cortisol within and between established international academic-based laboratories that specialize in saliva analyses.

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Sleep and COMT polymorphism in ADHD children: preliminary actigraphic data.

J Am Acad Child Adolesc Psychiatry

August 2006

Drs. Gruber, Grizenko, and Joober, Mr. Schwartz, Ms. Gauthier, and Ms. de Guzman are with the Douglas Hospital Research Centre and McGill University, Montreal; and Dr. Amor is with the Laval University and Hôpital Hôtel Dieu de Lévis, Quebec City, Canada.

Objective: To examine whether COMT (catechol-O-methyltransferase) polymorphism modulates aspects of sleep in children diagnosed with attention-deficit/hyperactivity disorder (ADHD).

Method: Nightly sleep actigraphic recordings during a double-blind, placebo-controlled, crossover clinical study (1 week of 0.5 mg/kg MPH; 1 week of placebo) were obtained for 34 children, 7.

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Implications of endogenous opioids and dopamine in alcoholism: human and basic science studies.

Alcohol Alcohol Suppl

March 1996

Department of Psychiatry, McGill University, and the Douglas Hospital Research Centre, Verdun, Quebec, Canada.

We investigated the endogenous opioid system and its role in mediating the reinforcing effects of ethanol that lead to high ethanol consumption as a biochemical marker of an individual's vulnerability to excessive ethanol consumption. We performed studies using human subjects with [high risk (HR)] and without [low risk (LR)] a family history of alcoholism to supplement our studies with experimental animals bred selectively for high- or low-ethanol consumption. HR subjects had lower basal plasma beta-endorphin levels as compared with LR subjects, but they had a more pronounced release of beta-endorphin after exposure to ethanol.

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