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Genetic OR biological psychiatry

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https://www.readbyqxmd.com/read/28812143/serotonin-in-psychiatry-in-vitro-disease-modeling-using-patient-derived-neurons
#1
REVIEW
Krishna C Vadodaria, Shani Stern, Maria C Marchetto, Fred H Gage
Several lines of evidence implicate serotonin in the etiology of multiple psychiatric disorders, especially mood disorders, such as major depressive disorder (MDD) and bipolar disorder (BD). Much of our current understanding of biological mechanisms underlying serotonergic alterations in mood disorders comes from animal studies. Innovation in induced pluripotent stem cell and transdifferentiation technologies for deriving neurons from adult humans has enabled the study of disease-relevant cellular phenotypes in vitro...
August 15, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28809398/precision-medicine-for-suicidality-from-universality-to-subtypes-and-personalization
#2
A B Niculescu, H Le-Niculescu, D F Levey, P L Phalen, H L Dainton, K Roseberry, E M Niculescu, J O Niezer, A Williams, D L Graham, T J Jones, V Venugopal, A Ballew, M Yard, T Gelbart, S M Kurian, A Shekhar, N J Schork, G E Sandusky, D R Salomon
Suicide remains a clear, present and increasing public health problem, despite being a potentially preventable tragedy. Its incidence is particularly high in people with overt or un(der)diagnosed psychiatric disorders. Objective and precise identification of individuals at risk, ways of monitoring response to treatments and novel preventive therapeutics need to be discovered, employed and widely deployed. We sought to investigate whether blood gene expression biomarkers for suicide (that is, a 'liquid biopsy' approach) can be identified that are more universal in nature, working across psychiatric diagnoses and genders, using larger cohorts than in previous studies...
August 15, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28805813/analysis-of-genome-wide-association-data-highlights-candidates-for-drug-repositioning-in-psychiatry
#3
Hon-Cheong So, Carlos Kwan-Long Chau, Wan-To Chiu, Kin-Sang Ho, Cho-Pong Lo, Stephanie Ho-Yue Yim, Pak-Chung Sham
Knowledge of psychiatric disease genetics has advanced rapidly during the past decade with the advent of genome-wide association studies (GWAS). However, less progress has been made in harnessing these data to reveal new therapies. Here we propose a framework for drug repositioning by comparing transcriptomes imputed from GWAS data with drug-induced gene expression profiles from the Connectivity Map database and apply this approach to seven psychiatric disorders. We found a number of repositioning candidates, many supported by preclinical or clinical evidence...
August 14, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28805769/-psychiatry-of-the-future-an-overview-of-foreign-scientists-opinions-of-the-position-of-psychiatry-in-the-modern-world
#4
E D Belousova, N N Zavadenko, A A Kholin, A A Sharkov
This review presents the recently published revised classifications of epilepsies and seizure types developed by the International League Against Epilepsy (ILAE). The Classification of Epilepsies includes several diagnostic levels (steps): 1) from seizure type to epilepsy type (generalized/focal/combined generalized and focal/unknown), 2) diagnosis of epilepsy syndrome 3) etiology (genetic/ structural/ infectious/ metabolic/ immune/unknown). A clinician can use any level of the classification. Operational classification of seizure types is replaced by the previous classification that was grounded on the anatomical basis...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28805197/family-of-a-person-suffering-from-schizophrenia-in-the-context-of-a-qualitative-approach-to-understanding-the-family-as-a-system
#5
Andrzej Witusik
Qualitative analysis of the family system including a person suffering from schizophrenia is an underestimated research paradigm in modern psychiatry, clinical psychology and psychotherapy. This method is important both from the cognitive point of view and for evaluation of the effectiveness of therapy. AIM: The aim of the study was a qualitative analysis of the therapeutic process in a family whose member is suffering from schizophrenic psychosis. MATERIALS AND METHODS: The study of the process using qualitative research methodology in the paradigm of systemic thinking pointing to the mutual interactions in the family system inducing relapses in the identified patient, with identification of triangulation processes, transgenerational myths inheritance and coalitions formed by the family members...
July 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28795915/where-teachers-are-few-documenting-available-faculty-in-five-tanzanian-medical-schools
#6
Charles A Mkony, Ephata E Kaaya, Alex J Goodell, Sarah B Macfarlane
Background Faced with one of the lowest physician-to-population ratios in the world, the Government of Tanzania is urging its medical schools to train more physicians. The annual number of medical students admitted across the country rose from 55 in the 1990s to 1,680 approved places for the 2015/16 academic year. These escalating numbers strain existing faculty. Objective To describe the availability of faculty in medical schools in Tanzania. Design We identified faculty lists published on the Internet by five Tanzanian medical schools for the 2011/12 academic year and analyzed the appointment status, rank, discipline, and qualifications of faculty members...
December 2016: Global Health Action
https://www.readbyqxmd.com/read/28794910/first-report-of-two-rare-entities-in-a-family-49-xxxxy-and-45-x
#7
Yavuz Şahin, Aysegül Özcan
49,XXXXY and 45,X syndromes are sex chromosome aneuploidies in which the affected individuals present with hypergonadotropic hypogonadism, short or long stature, and skeletal malformations. Psychological, endocrinological, and orthopaedic disorders constitute the major problems in the clinical follow-up. We report a family with two rare entities: 49,XXXXY and 45, X. Sex chromosome abnormalities should especially be in mind in the evaluation of patients with micropenis, mental retardation, and hypergonadotropic hypogonadism...
September 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/28782562/mirna-expression-profile-is-altered-differentially-in-the-rat-brain-compared-to-blood-after-experimental-exposure-to-50%C3%A2-hz-and-1%C3%A2-mt-electromagnetic-field
#8
REVIEW
Mehmet Emin Erdal, Senay Görücü Yılmaz, Serkan Gürgül, Coşar Uzun, Didem Derici, Nurten Erdal
Common complex diseases are a result of host and environment interactions. One such putative environmental factor is the electromagnetic field exposure, especially the occupational extremely low frequency (ELF) magnetic field, 50 Hz, 1 mT, whose neurobiological relevance remains elusive. We evaluated the effects of long-term (60 days) ELF-MF exposure on miRNAs previously related to brain and human diseases (miR-26b-5p, miR-9-5p, miR-29a-3p, miR-106b-5p, miR-107, miR-125a-3p). A total of 64 young (3 weeks-old) and mature (10 weeks-old) male/female Wistar-Albino rats were divided into sham and ELF-MF exposed groups...
August 3, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28770885/a-survey-to-determine-motivating-factors-to-quit-opioids-in-treatment-seekers-at-a-tertiary-care-hospital
#9
Muhammad Iqbal Afridi
OBJECTIVE: To determine the frequency of different motivating factors to quit opioid use. METHODS: The descriptive, cross-sectional study was conducted at the Department of Psychiatry and Behavioural Sciences, Jinnah Postgraduate Medical Centre, Karachi, from August 2012 to February 2013, and comprised opioid users. Demographic data was collected through a semi-structured questionnaire whereas motivational factor was assessed through a self-designed proforma. A motivational factor questionnaire was developed after a pilot study...
July 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28767318/the-gut-microbiome-and-mental-health-implications-for-anxiety-and-trauma-related-disorders
#10
Stefanie Malan-Muller, Mireia Valles-Colomer, Jeroen Raes, Christopher A Lowry, Soraya Seedat, Sian M J Hemmings
Biological psychiatry research has long focused on the brain in elucidating the neurobiological mechanisms of anxiety- and trauma-related disorders. This review challenges this assumption and suggests that the gut microbiome and its interactome also deserve attention to understand brain disorders and develop innovative treatments and diagnostics in the 21st century. The recent, in-depth characterization of the human microbiome spurred a paradigm shift in human health and disease. Animal models strongly suggest a role for the gut microbiome in anxiety- and trauma-related disorders...
August 2, 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28765304/leveraging-psychiatric-and-medical-genetics-to-understand-comorbid-depression-and-obesity
#11
EDITORIAL
Anna R Docherty
Precision medicine in psychiatry is on the rise, and depression and obesity - two highly prevalent, comorbid and well-characterised phenotypes - are optimal targets for the approach. Add the bedrock susceptibility gene, FTO, and Riviera et al have identified a constellation of factors that could enhance clinical treatment of both disorders.
August 2017: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/28761083/revealing-the-complex-genetic-architecture-of-obsessive-compulsive-disorder-using-meta-analysis
#12
(no author information available yet)
Two obsessive-compulsive disorder (OCD) genome-wide association studies (GWASs) have been published by independent OCD consortia, the International Obsessive-Compulsive Disorder Foundation Genetics Collaborative (IOCDF-GC) and the OCD Collaborative Genetics Association Study (OCGAS), but many of the top-ranked signals were supported in only one study. We therefore conducted a meta-analysis from the two consortia, investigating a total of 2688 individuals of European ancestry with OCD and 7037 genomically matched controls...
August 1, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28761079/alterations-in-resting-state-connectivity-along-the-autism-trait-continuum-a-twin-study
#13
J Neufeld, R Kuja-Halkola, K Mevel, É Cauvet, P Fransson, S Bölte
Autism spectrum disorder (ASD) has been found to be associated with alterations in resting state (RS) functional connectivity, including areas forming the default mode network (DMN) and salience network (SN). However, insufficient control for confounding genetic and environmental influences and other methodological issues limit the generalizability of previous findings. Moreover, it has been hypothesized that ASD might be marked by early hyper-connectivity followed by later hypo-connectivity. To date, only a few studies have explicitly tested age-related influences on RS connectivity alterations in ASD...
August 1, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28761078/the-complement-system-a-gateway-to-gene-environment-interactions-in-schizophrenia-pathogenesis
#14
V L Nimgaonkar, K M Prasad, K V Chowdari, E G Severance, R H Yolken
The pathogenesis of schizophrenia is considered to be multi-factorial, with likely gene-environment interactions (GEI). Genetic and environmental risk factors are being identified with increasing frequency, yet their very number vastly increases the scope of possible GEI, making it difficult to identify them with certainty. Accumulating evidence suggests a dysregulated complement pathway among the pathogenic processes of schizophrenia. The complement pathway mediates innate and acquired immunity, and its activation drives the removal of damaged cells, autoantigens and environmentally derived antigens...
August 1, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28755996/receptor-visualization-and-the-atomic-bomb-a-historical-account-of-the-development-of-the-chemical-neuroanatomy-of-receptors-for-neurotransmitters-and-drugs-during-the-cold-war
#15
REVIEW
J M Palacios, G Mengod
This is a historical account of how receptors for neurotransmitters and drugs got to be seen at the regional, cellular, and subcellular levels in brain, in the years going from the end of the World War II until the collapse of the Soviet Union, the Cold War (1945-1991). The realization in the US of the problem of mental health care, as a consequence of the results of medical evaluation for military service during the war, let the US Government to act creating among other things the National Institute for Mental Health (NIMH)...
July 26, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28750497/news-and-views-on-in-vivo-imaging-of-neurotransmission-using-pet-and-mri
#16
Christin Y Sander, Swen Hesse
Molecular neuroimaging with PET is an integrated tool in psychiatry research and drug-development for as long as this modality has been available, in particular for studying neurotransmission and endogenous neurotransmitter release. Pharmacologic probes but also behavioral challenges are currently applied to induce changes in neurochemical levels that can be inferred through their effects on changes in receptor binding and related outcome measures. Based on the availability of tracers that are sensitive for measuring neurotransmitter release these experiments have focused on the brain's dopamine system, while recent developments have extended those studies to other targets such as the serotonin or choline system...
July 27, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28742394/assessment-of-proteomic-measures-across-serious-psychiatric-illness
#17
S Charles Schulz, Shauna Overgaard, David J Bond, Rajesh Kaldate
The diagnoses of serious psychiatric illnesses, such as schizophrenia, schizoaffective disorder, and bipolar disorder, rely on the subjective recall and interpretation of often overlapping symptoms, and are not based on the objective pathophysiology of the illnesses. The subjectivity of symptom reporting and interpretation contributes to the delay of accurate diagnoses and limits effective treatment of these illnesses. Proteomics, the study of the types and quantities of proteins an organism produces, may offer an objective biological approach to psychiatric diagnosis...
2017: Clinical Schizophrenia & related Psychoses
https://www.readbyqxmd.com/read/28727685/erbb4-signaling-in-dopaminergic-axonal-projections-increases-extracellular-dopamine-levels-and-regulates-spatial-working-memory-behaviors
#18
M Skirzewski, I Karavanova, A Shamir, L Erben, J Garcia-Olivares, J H Shin, D Vullhorst, V A Alvarez, S G Amara, A Buonanno
Genetic variants of Neuregulin 1 (NRG1) and its neuronal tyrosine kinase receptor ErbB4 are associated with risk for schizophrenia, a neurodevelopmental disorder characterized by excitatory/inhibitory imbalance and dopamine (DA) dysfunction. To date, most ErbB4 studies have focused on GABAergic interneurons in the hippocampus and neocortex, particularly fast-spiking parvalbumin-positive (PV+) basket cells. However, NRG has also been shown to modulate DA levels, suggesting a role for ErbB4 signaling in dopaminergic neuron function...
July 20, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28714607/new-insights-into-how-serotonin-selective-reuptake-inhibitors-shape-the-developing-brain
#19
REVIEW
Jay A Gingrich, Heli Malm, Mark S Ansorge, Alan Brown, Andre Sourander, Deepika Suri, Cátia M Teixeira, Martha K Caffrey Cagliostro, Darshini Mahadevia, Myrna M Weissman
Development passes through sensitive periods, during which plasticity allows for genetic and environmental factors to exert indelible influence on the maturation of the organism. In the context of central nervous system (CNS) development, such sensitive periods shape the formation of neuro-circuits that mediate, regulate, and control behavior. This general mechanism allows for development to be guided by both the genetic blueprint, as well as the environmental context. While allowing for adaptation, such sensitive periods are also windows of vulnerability during which external and internal factors can confer risk to brain disorders by derailing adaptive developmental programs...
July 17, 2017: Birth defects research
https://www.readbyqxmd.com/read/28714115/editorial-let-s-talk-about-sex-the-gender-binary-revisited
#20
EDITORIAL
Albertine J Oldehinkel
Sex refers to biological differences and gender to socioculturally delineated masculine and feminine roles. Sex or gender are included as a covariate or effect modifier in the majority of child psychology and psychiatry studies, and differences found between boys and girls have inspired many researchers to postulate underlying mechanisms. Empirical tests of whether including these proposed explanatory variables actually reduces the variance explained by gender are lagging behind somewhat. That is a pity, because a lot can be gained from a greater focus on the active agents of specific gender differences...
August 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
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