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Schizophrenia hormone

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https://www.readbyqxmd.com/read/28282074/-epigenetics-2-0-the-multiple-faces-of-the-genome
#1
Marcelo Rubinstein
Epigenetics is the branch of genetics that studies the dynamic relationship between stable genotypes and varying phenotypes. To this end, epigenetics aims to discover the molecular mechanisms that explain how different nutrients and hormones, environmental changes, and emotional, social and cognitive experiences modify gene expression and behaviors, even permanently so. Psychiatry has learned that diseases with strong genetic predisposition, such as schizophrenia, show a concordance of around 50% between monozygotic twins, thus evidencing the importance of the genetic background and the presence of environmental variables that stimulate or block phenotypic development...
September 2016: Vertex: Revista Argentina de Psiquiatriá
https://www.readbyqxmd.com/read/28220059/disturbance-in-maternal-environment-leads-to-abnormal-synaptic-instability-during-neuronal-circuitry-development
#2
REVIEW
Yusuke Hatanaka, Tomohiro Kabuta, Keiji Wada
Adverse maternal environment during gestation and lactation can have negative effects on the developing brain that persist into adulthood and result in behavioral impairment. Recent studies of human and animal models suggest epidemiological and experimental association between disturbances in maternal environments during brain development and the occurrence of neuropsychiatric disorders, including autism spectrum disorder, attention deficit hyperactivity disorder, schizophrenia, anxiety, depression, and neurodegenerative diseases...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28193195/assessing-the-burden-of-treatment-emergent-adverse-events-associated-with-atypical-antipsychotic-medications
#3
Pierre-Michel Llorca, Christophe Lançon, Ann Hartry, T Michelle Brown, Dana B DiBenedetti, Siddhesh A Kamat, Clément François
BACKGROUND: Treatment of schizophrenia and major depressive disorder (MDD) with atypical antipsychotics (AAPs) show improved efficacy and reduced side effect burden compared with older antipsychotic medications. However, a risk of treatment-emergent adverse events (TEAEs) remains. TEAEs are hard to quantify and perspectives on the importance of TEAEs differ across patients and between patients and physicians. The current study is a qualitative assessment that investigates TEAEs of AAPs from both patient and physician perspectives to provide better understanding of the occurrence and burden of TEAEs associated with these medications...
February 13, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28152600/unbiased-metabolite-profiling-of-schizophrenia-fibroblasts-under-stressful-perturbations-reveals-dysregulation-of-plasmalogens-and-phosphatidylcholines
#4
Joanne H Huang, Hyoungjun Park, Jonathan Iaconelli, Shaunna S Berkovitch, Bradley Watmuff, Donna McPhie, Dost Öngür, Bruce M Cohen, Clary B Clish, Rakesh Karmacharya
We undertook an unbiased metabolite profiling of fibroblasts from schizophrenia patients and healthy controls to identify metabolites and pathways that are dysregulated in disease, seeking to gain new insights into the disease biology of schizophrenia and to discover potential disease-related biomarkers. We measured polar and nonpolar metabolites in the fibroblasts under normal conditions and under two stressful physiological perturbations: growth in low-glucose media and exposure to the steroid hormone dexamethasone...
February 3, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28127888/insulin-delivery-to-the-brain-using-intracranial-implantation-of-alginate-encapsulated-pancreatic-islets
#5
Konstantin Bloch, Alexey Vanichkin, Irit Gil-Ad, Pnina Vardi, Abraham Weizman
There is increasing evidence supporting a link between cognitive dysfunctions and impaired brain insulin signalling. Insulin therapy has previously been tested as an approach to ameliorate brain insulin resistance and deficiency in patients with various brain disorders. However, current strategies for insulin delivery to the brain may induce severe hypoglycaemia when injected peripherally or show poor uptake when delivered intranasally. Recently, we have shown that intracranial transplantation of naked pancreatic islets increased insulin content in the brain and attenuated cognitive dysfunctions without altering peripheral glucose homeostasis in rats with schizophrenia-like syndrome...
January 27, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28126575/low-levels-of-serum-total-antioxidant-capacity-and-presence-at-admission-and-absence-at-discharge-of-a-day-night-change-as-a-marker-of-acute-paranoid-schizophrenia-relapse
#6
Armando L Morera-Fumero, Estefanía Díaz-Mesa, Pedro Abreu-Gonzalez, Lourdes Fernandez-Lopez, Maria Del Rosario Cejas-Mendez
BACKGROUND: An oxidant-antioxidant system dysregulation has been described as a schizophrenia pathophysiological base. The total antioxidant capacity (TAC) is one measure of the antioxidant capacity of a system. Day/night concentration changes is a biological characteristic of hormones such as melatonin or cortisol. There is no information about TAC day/night changes in schizophrenia. AIMS: Studying the existence of a day/night TAC change in schizophrenia. METHOD: Forty-three DSM-IV paranoid schizophrenia inpatients participated in the study...
March 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28109841/disruption-of-aromatase-homeostasis-as-the-cause-of-a-multiplicity-of-ailments-a-comprehensive-review
#7
REVIEW
Seema Patel
Human health is beset with a legion of ailments, which is exacerbated by lifestyle errors. Out of the numerous enzymes in human body, aromatase, a cytochrome P450 enzyme is particularly very critical. Occurring at the crossroads of multiple signalling pathways, its homeostasis is vital for optimal health. Unfortunately, medications, hormone therapy, chemical additives in food, and endocrine-disrupting personal care products are oscillating the aromatase concentration beyond the permissible level. As this enzyme converts androgens (C19) into estrogens (C18), its agitation has different outcomes in different genders and age groups...
January 18, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28108225/female-schizophrenia-patients-and-risk-of-breast-cancer-a-population-based-cohort-study
#8
Ana Isabel Wu Chou, Yu-Chiao Wang, Cheng-Li Lin, Chia-Hung Kao
OBJECTIVE: Breast cancer is the most common type of cancer in women. This population-based cohort study aimed to examine the association between breast cancer in female schizophrenia patients and its association with the use of antipsychotics drugs. METHODS: All study subjects were selected from the Taiwan Insurance Claims Data (1998-2008). We compared the risk for breast cancer between female schizophrenia patients receiving antipsychotics (n=29,641) with female patients without any serious mental illnesses nor receiving antipsychotic drugs (n=59,282)...
January 17, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28042822/enduring-sexually-dimorphic-impact-of-in-utero-exposure-to-elevated-levels-of-glucocorticoids-on-midbrain-dopaminergic-populations
#9
REVIEW
Glenda E Gillies, Kanwar Virdee, Ilse Pienaar, Felwah Al-Zaid, Jeffrey W Dalley
Glucocorticoid hormones (GCs) released from the fetal/maternal glands during late gestation are required for normal development of mammalian organs and tissues. Accordingly, synthetic glucocorticoids have proven to be invaluable in perinatal medicine where they are widely used to accelerate fetal lung maturation when there is risk of pre-term birth and to promote infant survival. However, clinical and pre-clinical studies have demonstrated that inappropriate exposure of the developing brain to elevated levels of GCs, either as a result of clinical over-use or after stress-induced activation of the fetal/maternal adrenal cortex, is linked with significant effects on brain structure, neurological function and behaviour in later life...
December 30, 2016: Brain Sciences
https://www.readbyqxmd.com/read/28042663/all-our-sons-the-developmental-neurobiology-and-neuroendocrinology-of-boys-at-risk
#10
Allan N Schore
Why are boys at risk? To address this question, I use the perspective of regulation theory to offer a model of the deeper psychoneurobiological mechanisms that underlie the vulnerability of the developing male. The central thesis of this work dictates that significant gender differences are seen between male and female social and emotional functions in the earliest stages of development, and that these result from not only differences in sex hormones and social experiences but also in rates of male and female brain maturation, specifically in the early developing right brain...
January 2017: Infant Mental Health Journal
https://www.readbyqxmd.com/read/28027496/allostatic-load-and-reduced-cortical-thickness-in-schizophrenia
#11
Joshua Chiappelli, Peter Kochunov, Anya Savransky, Feven Fisseha, Krista Wisner, Xiaoming Du, Laura M Rowland, L Elliot Hong
Structural imaging studies have consistently found reduced gray matter thickness of the cerebral cortex in schizophrenia, a finding that is evident in first episode psychosis and may be progressive in some cases. Although genetic predisposition and medication effects may contribute to cortical thinning, we hypothesize that the cumulative effects of stress may represent an environmental factor impacting brain morphology in schizophrenia. We examined the relationship between allostatic load, an index of peripheral biomarkers representing the cumulative effects of stress, and cortical thickness...
March 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28000544/the-complex-inter-relationship-between-diabetes-and-schizophrenia
#12
Jeffery Rado
Schizophrenia is a chronic and debilitating brain disorder. It is associated with increased mortality, primarily due to elevated cardio-metabolic risk. Affected patients have higher rates of obesity, metabolic syndrome and diabetes [1]. Intrinsic factors contributing to this increased risk include a shared underlying pathophysiology between schizophrenia and diabetes mellitus involving stress, inflammation and genetics. Extrinsic contributing factors include diet, lifestyle, health care access, low socioeconomic status and overburden of traditional diabetes risk factors...
December 20, 2016: Current Diabetes Reviews
https://www.readbyqxmd.com/read/27992436/transcriptomic-analysis-shows-decreased-cortical-expression-of-nr4a1-nr4a2-and-rxrb-in-schizophrenia-and-provides-evidence-for-nuclear-receptor-dysregulation
#13
Susan M Corley, Shan-Yuan Tsai, Marc R Wilkins, Cynthia Shannon Weickert
Many genes are differentially expressed in the cortex of people with schizophrenia, implicating factors that control transcription more generally. Hormone nuclear receptors dimerize to coordinate context-dependent changes in gene expression. We hypothesized that members of two families of nuclear receptors (NR4As), and retinoid receptors (RARs and RXRs), are altered in the dorsal lateral prefrontal cortex (DLPFC) of people with schizophrenia. We used next generation sequencing and then qPCR analysis to test for changes in mRNA levels for transcripts encoding nuclear receptors: orphan nuclear receptors (3 in the NR4A, 3 in the RAR, 3 in the RXR families and KLF4) in total RNA extracted from the DLPFC from people with schizophrenia compared to controls (n = 74)...
2016: PloS One
https://www.readbyqxmd.com/read/27842943/raloxifene-increases-prefrontal-activity-during-emotional-inhibition-in-schizophrenia-based-on-estrogen-receptor-genotype
#14
Jochen Kindler, Cynthia Shannon Weickert, Peter R Schofield, Rhoshel Lenroot, Thomas W Weickert
People with schizophrenia show decreased prefrontal cortex (PFC) activity during emotional response inhibition, a cognitive process sensitive to hormonal influences. Raloxifene, a selective estrogen receptor modulator, binds estrogen receptor alpha (ESR-α), improves memory, attention and normalizes cortical and hippocampal activity during learning and emotional face recognition in schizophrenia. Here, we tested the extent to which raloxifene restores neuronal activity during emotional response inhibition in schizophrenia...
December 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27825840/environmental-toxicology-sensitive-periods-of-development-and-neurodevelopmental-disorders
#15
REVIEW
Djai B Heyer, Rhiannon M Meredith
Development of the mammalian central nervous system is a complex process whose disruption may have severe and long-lasting consequences upon brain structure and function, potentially resulting in a neurodevelopmental disorder (NDD). Many NDDs are known to be genetic in origin, with symptom onset and their underlying mechanisms now known to be regulated during time-dependent windows or 'critical periods' during normal brain development. However, it is increasingly evident that similar disturbances to the developing nervous system may be caused by exposure to non-genetic, environmental factors...
November 4, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27824682/treating-schizophrenia-during-menopause
#16
Amnon Brzezinski, Noa A Brzezinski-Sinai, Mary V Seeman
OBJECTIVE: The aim of this review is to examine three questions: What are the risks and benefits of treating women with schizophrenia with hormone therapy (HT) at menopause? Should the antipsychotic regimen be changed at menopause? Do early- and late-onset women with schizophrenia respond differently to HT at menopause? METHODS: MEDLINE databases for the years 1990 to 2016 were searched using the following interactive terms: schizophrenia, gender, menopause, estrogen, and hormones...
November 7, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27804260/cortisol-and-acth-levels-in-drug-naive-adolescents-with-first-episode-early-onset-schizophrenia
#17
Şeref Şimşek, Salih Gençoğlan, Tuğba Yüksel, Hüseyin Aktaş
The aim of this study was to investigate serum levels of cortisol and adrenocorticotropic hormone in adolescents with first-episode early onset schizophrenia. A total of 23 adolescent patients, who did not receive prior therapy and who were diagnosed with psychosis according to DSM-IV, were included. Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version, Positive and Negative Symptom Scale, and Clinical Global Impression Scale were conducted with the participants. No significant differences were found between the patients and the control subjects in serum cortisol and adrenocorticotropic hormone levels (P > ...
March 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/27789681/estrogen-signaling-as-a-therapeutic-target-in-neurodevelopmental-disorders
#18
Amanda Crider, Anilkumar Pillai
Estrogens, the primary female sex hormones, were originally characterized through their important role in sexual maturation and reproduction. However, recent studies have shown that estrogens play critical roles in a number of brain functions, including cognition, learning and memory, neurodevelopment, and adult neuroplasticity. A number of studies from both clinical as well as preclinical research suggest a protective role of estrogen in neurodevelopmental disorders including autism spectrum disorder (ASD) and schizophrenia...
January 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27776076/extracellular-elevation-of-adrenomedullin-a-gene-associated-with-schizophrenia-suppresses-heat-shock-protein-1a-1b-mrna
#19
Zhilei Zhao, Seiichiro Jinde, Chihiro Kakiuchi, Kiyoto Kasai
Several recent gene expression studies on schizophrenia, including one using monozygotic twins discordant for the disease, have reported the upregulation of adrenomedullin (ADM), which was initially identified as a vasodilator hormone. It has been hypothesized that upregulation of ADM may be a susceptibility factor for schizophrenia, although the exact role of ADM in the central nervous system remains unclear. In this study, we used a microarray analysis to investigate the changes in global gene expression induced by the administration of exogenous ADM in SK-N-SH cells, which allowed us to evaluate the effects of elevated ADM on the central nervous system...
October 21, 2016: Neuroreport
https://www.readbyqxmd.com/read/27755159/peony-glycyrrhiza-decoction-for-antipsychotic-related-hyperprolactinemia-in-women-with-schizophrenia-a-randomized-controlled-trial
#20
Sui Cheung Man, Xian-Bin Li, Huai-Hai Wang, Hai-Ning Yuan, Hua-Ning Wang, Rui-Guo Zhang, Qing-Rong Tan, Hei Kiu Wong, Grainne M McAlonan, Chuan-Yue Wang, Zhang-Jin Zhang
OBJECTIVES: An herbal preparation called peony-glycyrrhiza decoction (PGD) may have the potential in reducing antipsychotic-related hyperprolactinemia (hyperPRL). This double-blind, randomized placebo-controlled study aimed to reevaluate the efficacy of PGD against antipsychotic-related hyperPRL. METHODS: Ninety-nine schizophrenic women who were under antipsychotic therapy and had symptomatic hyperPRL were randomly assigned to additional treatment with placebo (n = 50) or PGD (n = 49, 45 g/d) for 16 weeks...
December 2016: Journal of Clinical Psychopharmacology
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