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https://www.readbyqxmd.com/read/28042822/enduring-sexually-dimorphic-impact-of-in-utero-exposure-to-elevated-levels-of-glucocorticoids-on-midbrain-dopaminergic-populations
#1
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/28024269/aromatase-changes-in-depression-a-postmortem-and-animal-experimental-study
#2
Juan-Li Wu, Yang He, Radovan Hrubý, Rawien Balesar, Yang-Jian Qi, Lei Guo, Zhong Ren, Qiong-Bin Zhu, Man-Li Huang, Dick F Swaab, Ai-Min Bao
A hyperactive hypothalamo-pituitary-adrenal (HPA) axis is a prominent feature in depression. It has been shown that androgens inhibit HPA activity and that estrogens stimulate it. We have therefore investigated, in human postmortem hypothalamus, whether depression features an increase in aromatase, which is the rate-limiting enzyme for the conversion of androgens to estrogens. In addition, we have tested the effect of an aromatase inhibitor on depression-like symptoms in a frequently used animal model for depression...
November 30, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27922635/increased-plasma-levels-of-circulating-cell-free-mitochondrial-dna-in-suicide-attempters-associations-with-hpa-axis-hyperactivity
#3
D Lindqvist, J Fernström, C Grudet, L Ljunggren, L Träskman-Bendz, L Ohlsson, Å Westrin
Preclinical data suggest that chronic stress may cause cellular damage and mitochondrial dysfunction, potentially leading to the release of mitochondrial DNA (mtDNA) into the bloodstream. Major depressive disorder has been associated with an increased amount of mtDNA in leukocytes from saliva samples and blood; however, no previous studies have measured plasma levels of free-circulating mtDNA in a clinical psychiatric sample. In this study, free circulating mtDNA was quantified in plasma samples from 37 suicide attempters, who had undergone a dexamethasone suppression test (DST), and 37 healthy controls...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27901414/cognitive-deficits-and-inflammatory-response-resulting-from-mild-to-moderate-traumatic-brain-injury-in-rats-are-exacerbated-by-repeated-pre-exposure-to-an-innate-stress-stimulus
#4
Michaël Ogier, Amor Belmeguenai, Thomas Lieutaud, Béatrice Georges, Sandrine Bouvard, Emilie Carré, Frédéric Canini, Laurent Bezin
Traumatic brain injury (TBI) is common in both military and civilian populations, and often results in neurobehavioral sequelae that impair quality of life in both patients and their families. Although individuals who are chronically exposed to stress are more likely to experience TBI, it is still unknown whether pre-injury stress influences the outcome after TBI. The present study tested whether behavioral and cognitive long-term outcome after TBI in rats is affected by prior exposure to an innate stress stimulus...
January 13, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27766083/behavioral-neuroadaptation-to-alcohol-from-glucocorticoids-to-histone-acetylation
#5
Nicole Mons, Daniel Beracochea
A prime mechanism that contributes to the development and maintenance of alcoholism is the dysregulation of the hypothalamic-pituitary-adrenal axis activity and the release of glucocorticoids (cortisol in humans and primates, corticosterone in rodents) from the adrenal glands. In the brain, sustained, local elevation of glucocorticoid concentration even long after cessation of chronic alcohol consumption compromises functional integrity of a circuit, including the prefrontal cortex (PFC), the hippocampus (HPC), and the amygdala (AMG)...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27746334/antidepressant-like-effects-of-xiaochaihutang-in-a-neuroendocrine-mouse-model-of-anxiety-depression
#6
Kuo Zhang, Jingyu Yang, Fang Wang, Xing Pan, Jian Liu, Lijuan Wang, Guangyue Su, Jie Ma, Yingxu Dong, Zhili Xiong, Chunfu Wu
ETHNOPHARMACOLOGICAL RELEVANCE: Hyperactivity of hypothalamic-pituitary-adrenal (HPA) axis is often observed in the pathophysiology of depression. Antidepressant therapy can restore hippocampal neurogenesis to rescue the HPA axis regulation defects. Xiaochaihutang (XCHT), a famous Chinese herbal formula, has been used clinically in depressive disorders in China. Our previous studies have demonstrated XCHT improved depressive-like behaviors in chronic unpredictable mild stress rat, but the underlying mechanisms of XCHT on hippocampal neurogenesis and the HPA axis were still unclear...
December 24, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27741480/glucocorticoid-receptor-variants-in-childhood-attention-deficit-hyperactivity-disorder-and-comorbid-psychiatric-disorders
#7
Andrea B Schote, Martina Bonenberger, Haukur Pálmason, Christiane Seitz, Jobst Meyer, Christine M Freitag
Stress results in a variety of neuroendocrine, immune and behavioral responses and represents a risk factor for many disorders. Following exposure to stress, glucocorticoids are secreted from the adrenal cortex and act via the ligand-activated glucocorticoid receptor (GR). Several polymorphisms of the GR-encoding gene NR3C1 have been described and functionally investigated. However, the impact of these variants on complex diseases such as Attention-Deficit/Hyperactivity Disorder (ADHD) is still unclear. In this study, 251 children with ADHD, 19 affected and 35 unaffected siblings, and their parents were included in a family-based association study assessing seven common variants of NR3C1 (TthIIII_rs10052957; NR3C1-I_rs10482605; ER22/23EK_rs6189/rs6190; N363S_rs56149945; BclI_rs41423247; GR-9beta_rs6198)...
December 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27738546/mini-review-anticholinergic-activity-as-a-behavioral-pathology-of-lewy-body-disease-and-proposal-of-the-concept-of-anticholinergic-spectrum-disorders
#8
Koji Hori, Kimiko Konishi, Misa Hosoi, Hiroi Tomioka, Masayuki Tani, Yuka Kitajima, Mitsugu Hachisu
Given the relationship between anticholinergic activity (AA) and Alzheimer's disease (AD), we rereview our hypothesis of the endogenous appearance of AA in AD. Briefly, because acetylcholine (ACh) regulates not only cognitive function but also the inflammatory system, when ACh downregulation reaches a critical level, inflammation increases, triggering the appearance of cytokines with AA. Moreover, based on a case report of a patient with mild AD and slightly deteriorated ACh, we also speculate that AA can appear endogenously in Lewy body disease due to the dual action of the downregulation of ACh and hyperactivity of the hypothalamic-pituitary-adrenal axis...
2016: Parkinson's Disease
https://www.readbyqxmd.com/read/27729464/prepuberal-light-phase-feeding-induces-neuroendocrine-alterations-in-adult-rats
#9
C García-Luna, P Soberanes-Chávez, P de Gortari
Feeding patterns are important factors in obesity evolvement. Time-restricted feeding schedules (tRF) during resting phase change energy homeostasis regulation, disrupting the circadian release of metabolism-regulating hormones, such as leptin, insulin and corticosterone and promoting body weight gain. Thyroid (HPT) and adrenal (HPA) axes exhibit a circadian regulation and are involved in energy expenditure, thus studying their parameters in tRF paradigms will elucidate their role in energy homeostasis impairments under such conditions...
January 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/27725421/impact-of-maternal-stress-in-pregnancy-on-brain-function-of-the-offspring
#10
Jun Udagawa, Kodai Hino
Epidemiological studies suggest that exposure to prenatal stressors, including malnutrition, maternal immune activation (MIA), and adverse life events, is associated with increased risks of schizophrenia, autism spectrum disorder (ASD), and attention-deficit hyperactivity disorder (ADHD). However, the underlying pathophysiological mechanisms are unclear. The first trimester of pregnancy is particularly a vulnerable period. During this period, the self-renewal of neural stem cells and neurogenesis vigorously occur, and synaptic connections are partially formed in the telencephalon...
2016: Nihon Eiseigaku Zasshi. Japanese Journal of Hygiene
https://www.readbyqxmd.com/read/27725163/activation-of-ppar-%C3%AE-reduces-hpa-axis-activity-in-diabetic-rats-by-up-regulating-pi3k-expression
#11
Rafael Carvalho Torres, Nathalia Santos Magalhães, Patrícia M R E Silva, Marco A Martins, Vinicius F Carvalho
Increased hypothalamus-pituitary-adrenal axis (HPA) activity in diabetes is strongly associated with several morbidities noted in patients with the disease. We previously demonstrated that hyperactivity of HPA axis under diabetic conditions is associated with up-regulation of adrenocorticotrophic hormone (ACTH) receptors (MC2R) in adrenal and down-regulation of glucocorticoid receptors (GR and MR) in pituitary. This study investigates the role of peroxisome proliferator-activated receptor (PPAR)-γ in HPA axis hyperactivity in diabetic rats...
October 8, 2016: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/27699247/pka-regulatory-subunit-1a-inactivating-mutation-induces-serotonin-signaling-in-primary-pigmented-nodular-adrenal-disease
#12
Zakariae Bram, Estelle Louiset, Bruno Ragazzon, Sylvie Renouf, Julien Wils, Céline Duparc, Isabelle Boutelet, Marthe Rizk-Rabin, Rossella Libé, Jacques Young, Dennis Carson, Marie-Christine Vantyghem, Eva Szarek, Antoine Martinez, Constantine A Stratakis, Jérôme Bertherat, Hervé Lefebvre
Primary pigmented nodular adrenocortical disease (PPNAD) is a rare cause of ACTH-independent hypercortisolism. The disease is primarily caused by germline mutations of the protein kinase A (PKA) regulatory subunit 1A (PRKAR1A) gene, which induces constitutive activation of PKA in adrenocortical cells. Hypercortisolism is thought to result from PKA hyperactivity, but PPNAD tissues exhibit features of neuroendocrine differentiation, which may lead to stimulation of steroidogenesis by abnormally expressed neurotransmitters...
September 22, 2016: JCI Insight
https://www.readbyqxmd.com/read/27693397/selective-crf2-receptor-agonists-ameliorate-the-anxiety-and-depression-like-state-developed-during-chronic-nicotine-treatment-and-consequent-acute-withdrawal-in-mice
#13
Zsolt Bagosi, Miklós Palotai, Balázs Simon, Péter Bokor, András Buzás, Beáta Balangó, Dávid Pintér, Miklós Jászberényi, Krisztina Csabafi, Gyula Szabó
The aim of the present study was to investigate the effects of the selective agonists of the corticotropin-releasing factor (CRF) 2 receptor, urocortin 2 (UCN 2) and urocortin 3 (UCN 3), on the anxiety- and depression-like signs induced by acute nicotine withdrawal in mice. In order to do so, male CFLP mice were exposed for 7 days to repeated intraperitoneal (IP) injection with nicotine or saline solution and 1day of acute withdrawal and then a single intracerebroventricular (ICV) injection with UCN 2, UCN 3 or saline solution...
September 29, 2016: Brain Research
https://www.readbyqxmd.com/read/27662896/hypothalamic-dysfunction-and-multiple-sclerosis-implications-for-fatigue-and-weight-dysregulation
#14
REVIEW
Kevin G Burfeind, Vijayshree Yadav, Daniel L Marks
Signs and symptoms of multiple sclerosis are usually attributed to demyelinating lesions in the spinal cord or cerebral cortex. The hypothalamus is a region that is often overlooked yet controls many important homeostatic functions, including those that are perturbed in multiple sclerosis. In this review we discuss how hypothalamic dysfunction may contribute to signs and symptoms in people with multiple sclerosis. While dysfunction of the hypothalamic-pituitary-adrenal axis is common in multiple sclerosis, the effects and mechanisms of this dysfunction are not well understood...
November 2016: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/27631565/perceived-parental-care-during-childhood-acth-cortisol-and-nicotine-dependence-in-the-adult
#15
Gilberto Gerra, Matteo Manfredini, Lorenzo Somaini, Giulia Milano, Roberto Ciccocioppo, Claudia Donnini
Studies evidenced the relationship between adverse childhood experiences (ACEs) and tobacco smoking in adulthood. An appropriate parenting style has been found to be associated with children's less frequent tobacco consumption. Hypothalamus-pituitary-adrenal (HPA) axis hyperactivity could represent the potential link between ACEs, mood disorders and smoking susceptibility. We studied a sample of 50 male smokers, affected by nicotine dependence and 50 controls who never smoked. Self-reported retrospective perception of neglect (Child Experience of Care and Abuse: CECA-Q questionnaire), age of smoking onset, number of cigarette/day, psychiatric symptoms (Symptoms Check List 90 scale: SCL 90) and basal level of ACTH and cortisol have been evaluated...
November 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27571131/steroid-profiling-in-male-wobbler-mouse-a-model-of-amyotrophic-lateral-sclerosis
#16
Maria Claudia Gonzalez Deniselle, Philippe Liere, Antoine Pianos, Maria Meyer, Fanny Aprahamian, Annie Cambourg, Noelia P Di Giorgio, Michael Schumacher, Alejandro F De Nicola, Rachida Guennoun
The The Wobbler mouse is an animal model for human motoneuron diseases, especially amyotrophic lateral sclerosis (ALS), used in the investigation of both pathology and therapeutic treatment. ALS is a fatal neurodegenerative disease, characterized by the selective and progressive death of motoneurons, leading to progressive paralysis. Previous limited studies have reported steroidal hormone dysregulation in Wobbler mouse and in ALS patients, suggesting endocrine dysfunctions which may be involved in the pathogenesis of the disease...
August 29, 2016: Endocrinology
https://www.readbyqxmd.com/read/27544717/hormone-disorder-and-vitamin-deficiency-in-attention-deficit-hyperactivity-disorder-adhd-and-autism-spectrum-disorders-asds
#17
Keziban Aslı Bala, Murat Doğan, Sultan Kaba, Tuba Mutluer, Oktay Aslan, Sekibe Zehra Doğan
BACKGROUND: The aim of this study was to analyze thyroid hormones and antibodies, ferritin, vitamins B12 and D, adrenal and gonadal steroid levels, and celiac antibodies in children diagnosed with attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). METHODS: Between February 2014 and July 2014, a total of 77 children and adolescents (31 girls, 46 boys) who were admitted to the Van Training and Research Hospital were included in the study...
September 1, 2016: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/27432060/the-immune-system-and-the-role-of-inflammation-in-perinatal-depression
#18
REVIEW
Philippe Leff-Gelman, Ismael Mancilla-Herrera, Mónica Flores-Ramos, Carlos Cruz-Fuentes, Juan Pablo Reyes-Grajeda, María Del Pilar García-Cuétara, Marielle Danitza Bugnot-Pérez, David Ellioth Pulido-Ascencio
Major depression during pregnancy is a common psychiatric disorder that arises from a complex and multifactorial etiology. Psychosocial stress, sex, hormones, and genetic vulnerability increase the risk for triggering mood disorders. Microglia and toll-like receptor 4 play a crucial role in triggering wide and varied stress-induced responses mediated through activation of the inflammasome; this leads to the secretion of inflammatory cytokines, increased serotonin metabolism, and reduction of neurotransmitter availability along with hypothalamic-pituitary-adrenal axis hyperactivity...
August 2016: Neuroscience Bulletin
https://www.readbyqxmd.com/read/27413389/antidepressant-like-effects-of-fractions-prepared-from-danzhi-xiaoyao-san-decoction-in-rats-with-chronic-unpredictable-mild-stress-effects-on-hypothalamic-pituitary-adrenal-axis-arginine-vasopressin-and-neurotransmitters
#19
Li-Li Wu, Yan Liu, Can Yan, Yi Pan, Jun-Fang Su, Wei-Kang Wu
The aim of the present study was to investigate the antidepressant-like effects of two fractions, including petroleum ether soluble fraction (Fraction A, FA) and water-EtOH soluble fraction (Fraction B, FB) prepared from the Danzhi-xiaoyao-san (DZXYS) by using chronic unpredictable mild stress-induced depressive rat model. The results indicated that DZXYS could ameliorate the depression-like behavior in chronic stress model of rats. The inhibition of hyperactivity of HPA axis and the modulation of monoamine and amino acid neurotransmitters in the hippocampus may be the important mechanisms underlying the action of DZXYS antidepressant-like effect in chronically stressed rats...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27367307/relative-hypocortisolism-is-associated-with-obesity-and-the-metabolic-syndrome-in-recurrent-affective-disorders
#20
Martin Maripuu, Mikael Wikgren, Pontus Karling, Rolf Adolfsson, Karl-Fredrik Norrback
BACKGROUND: Cardiovascular disease (CVD) is one of the main causes of excess deaths in affective disorders. Affective disorders are associated with increased frequencies of CVD risk-factors such as obesity, dyslipidemia, and metabolic syndrome. Stress-induced chronic cortisol excess has been suggested to promote obesity and metabolic syndrome. Chronic stress with frequent or persisting hypothalamic-pituitary-adrenal-axis (HPA-axis) hyperactivity may, over time, lead to a state of low HPA-axis activity, also denoted hypocortisolism...
November 1, 2016: Journal of Affective Disorders
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