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https://www.readbyqxmd.com/read/29929086/positive-and-negative-social-support-and-hpa-axis-hyperactivity-evidence-from-glucocorticoids-in-human-hair
#1
Eleonora Iob, Clemens Kirschbaum, Andrew Steptoe
INTRODUCTION: While positive social support is associated with lower prevalence of disease and better treatment outcomes, negative social relationships can instead have unfavourable consequences for several physical and mental health conditions. However, the specific mechanisms by which this nexus might operate remain poorly understood. Hypothalamic-pituitary-adrenal (HPA) axis hyperactivity owing to psychosocial stress has been proposed as a potential pathway underlying the link between social support and health...
June 12, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29927288/interparental-conflict-and-child-hpa-axis-responses-to-acute-stress-insights-using-intensive-repeated-measures
#2
Kate Ryan Kuhlman, Rena L Repetti, Bridget M Reynolds, Theodore F Robles
Interparental conflict is a common source of psychosocial stress in the lives of children. The purpose of this study was to examine the association between recent interparental conflict and one component of the physiological stress response system, the hypothalamic-pituitary-adrenal (HPA)-axis. Parents of 42 children (ages 8-13 years) completed daily diaries of interparental conflict for 8 weeks. At the end of the 8 weeks, youth participated in the Trier Social Stress Test for Children (TSST-C) while providing 2 pre- and 4 poststress salivary cortisol samples...
June 21, 2018: Journal of Family Psychology: JFP
https://www.readbyqxmd.com/read/29920425/the-slope-of-cortisol-from-awakening-to-30-min-post-wake-in-post-institutionalized-children-and-early-adolescents
#3
Keira B Leneman, Bonny Donzella, Christopher D Desjardins, Bradley S Miller, Megan R Gunnar
This study examined the association between early life adversity, in the form of early rearing in an institution (orphanage), and the slope of cortisol in the first thirty minutes after waking in 277 children, aged 7 through 15 years old, who had either been adopted between 6 and 60 months of age into well-resourced homes in the United States or born into similar homes. The adopted youth were divided at the median (age 16 months) into those adopted earlier (earlier-adopted, EA) and later (later-adopted, LA)...
June 15, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29916751/increased-symptoms-of-anxiety-and-depression-in-prepubertal-girls-but-not-boys-with-premature-adrenarche-associations-with-serum-dheas-and-daily-salivary-cortisol-concentrations
#4
Chrisanthi Marakaki, Panagiota Pervanidou, Ioannis Papassotiriou, George Mastorakos, Ze'ev Hochberg, George Chrousos, Anastasios Papadimitriou
Concerns over anxiety and depressive symptoms in children with premature adrenarche (PA) have been recently raised. However, to date, most relevant studies are on a small number of girls. In this cross-sectional study, 82 pre-pubertal children (66 girls and 16 boys) diagnosed with PA, were compared to 63 control children regarding their psychological characteristics and hypothalamic-pituitary-adrenal (HPA) axis function, as assessed by salivary cortisol measurement. Symptoms of anxiety and depression were assessed by child self-report (Spence Children's Anxiety Scale (SCAS) and Depression self-rating scale for Children (DSRS)) and parent-report (Child Behaviour Checklist (CBCL)) tests validated for the Greek population...
June 19, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29912970/the-influence-of-adolescent-nicotine-exposure-on-ethanol-intake-and-brain-gene-expression
#5
Constanza P Silva, William J Horton, Michael J Caruso, Aswathy Sebastian, Laura C Klein, Istvan Albert, Helen M Kamens
Nicotine and alcohol are often co-abused. Adolescence is a vulnerable period for the initiation of both nicotine and alcohol use, which can lead to subsequent neurodevelopmental and behavioral alterations. It is possible that during this vulnerable period, use of one drug leads to neurobiological alterations that affect subsequent consumption of the other drug. The aim of the present study was to determine the effect of nicotine exposure during adolescence on ethanol intake, and the effect of these substances on brain gene expression...
2018: PloS One
https://www.readbyqxmd.com/read/29912061/a-single-low-dose-of-hydrocortisone-enhances-cognitive-functioning-in-hiv-infected-women
#6
Leah H Rubin, K Luan Phan, Sheila M Keating, Pauline M Maki
OBJECTIVE: Low-dose hydrocortisone (LDH) enhances aspects of learning and memory in select populations including patients with PTSD and HIV-infected men. HIV-infected women show impairments in learning and memory, but the cognitive effects of LDH in HIV-infected women are unknown. DESIGN: Double-blind, placebo-controlled, cross-over study examining the time-dependent effects of a single low-dose administration of hydrocortisone (10 mg oral) on cognition in 36 HIV-infected women...
June 14, 2018: AIDS
https://www.readbyqxmd.com/read/29910526/parenting-matters-moderation-of-biological-and-community-risk-for-obesity
#7
Maria A Gartstein, Erich Seamon, Stephanie F Thompson, Liliana J Lengua
Contributions of parental limit setting, negativity, scaffolding, warmth, and responsiveness to Body Mass Index (BMI) were examined. Parenting behaviors were observed in parent-child interactions, and child BMI was assessed at 5 years of age. Mothers provided demographic information and obtained child saliva samples used to derive cortisol concentration indicators ( N = 250). Geospatial crime indices were computed based on publically available information for a subsample residing within the boundaries of a Pacific Northwest city ( N = 114)...
May 2018: Journal of Applied Developmental Psychology
https://www.readbyqxmd.com/read/29908835/interactions-of-body-temperature-and-nutritional-status-on-hypothalamo-pituitary-adrenal-axis-activity-in-pre-thermoregulatory-eastern-bluebird-chicks-sialia-sialis
#8
Sharon E Lynn, Michael D Kern
Early life experiences can affect the function of the hypothalamo-pituitary-adrenal (HPA) axis of vertebrates, with potential fitness consequences later in life. In altricial species, for example, variation in parental behavior, e.g. brooding or feeding, can modify the activity of the HPA axis of the young by altering their exposure to noxious stimuli as they develop in the nest. We have shown that a drop in the body temperature of eastern bluebird (Sialia sialis) chicks, such as occurs when females are away from the nest, elevates their blood corticosterone levels...
June 14, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29902667/associations-between-maternal-psychological-distress-and-salivary-cortisol-during-pregnancy-a-mixed-models-approach
#9
Marion I van den Heuvel, Marcel A L M van Assen, Vivette Glover, Stephan Claes, Bea R H Van den Bergh
BACKGROUND: Maternal psychological distress during pregnancy is related to adverse child behavioral and emotional outcomes later in life, such as ADHD and anxiety/depression. The underlying mechanisms for this, however, are still largely unknown. The hypothalamic-pituitary-adrenal (HPA)-axis, with its most important effector hormone cortisol, has been proposed as a mechanism, but results have been inconsistent. The current study investigated the association between maternal psychological distress (i...
June 5, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29902479/single-oral-administration-of-flavan-3-ols-induces-stress-responses-monitored-with-stress-hormone-elevations-in-the-plasma-and-paraventricular-nucleus
#10
Yasuyuki Fujii, Kenta Suzuki, Yahiro Hasegawa, Fumio Nanba, Toshiya Toda, Takahiro Adachi, Shu Taira, Naomi Osakabe
We previously confirmed that postprandial alterations in the circulation and metabolism after a single oral dose of flavan 3-ols (mixture of catechin and catechin oligomers) were involved in an increase in sympathetic nervous activity. However, it is well known that, in response to various stresses, activation of the hypothalamic-pituitary-adrenal (HPA) axis occurs together with sympathetic nerve activity, which is associated with activation of the sympathetic-adrenal-medullary (SAM) axis. In this study, we examined whether the HPA axis was activated after a single dose of flavan 3-ols...
June 11, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29901836/chronic-stress-dampens-excitatory-synaptic-gain-in-the-paraventricular-nucleus-of-the-hypothalamus
#11
Eric Salter, Julia Sunstrum, Sara Matovic, Wataru Inoue
KEY POINTS: Glutamatergic synaptic inputs to corticotropin releasing hormone (CRH) secreting neurons in the paraventricular nucleus of the hypothalamus (PVN) are required for stress-induced activation of the hypothalamic-pituitary-adrenal (HPA) axis. These synapses also undergo stress-induced plasticity thereby influencing HPA axis stress adaptation. By using patch clamp electrophysiology, we show that, in adult non-stressed mice, action potentials at these glutamatergic afferents elicit multiquantal transmission to the postsynaptic PVN-CRH neurons (i...
June 14, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29901389/3-4-dihydroxyphenylethanol-assuages-cognitive-impulsivity-in-alzheimer-s-disease-by-attuning-hpa-axis-via-differential-crosstalk-of-%C3%AE-7-nachr-with-microrna-124-and-hdac6
#12
ArunSundar MohanaSundaram, Thukani Sathanantham Shanmugarajan, Velayutham Ravichandiran
Cognitive impulsivity, a form of suboptimal cost-benefit decision making is an illustrious attribute of an array of neurodegenerative diseases including Alzheimer's Disease (AD). In this study, delay discounting paradigm was used to assess the effect of 3,4-dihydroxyphenylethanol (DOPET) on cognitive impulsivity-in an oA42i (oligomeric amyloid β1-42 plus ibotenic acid) induced AD mouse model-using a non-spatial T-maze task. The results depicted that oA42i administration elevated cognitive impulsivity, whereas DOPET treatment attenuated the impulsive behavior and matched the choice of the sham-operated controls...
June 14, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29898449/evaluation-of-hypothalamic-pituitary-adrenal-axis-suppression-following-cutaneous-use-of-topical-corticosteroids-in-children-a-meta-analysis
#13
Lauren K Wood Heickman, Ladan Davallow Ghajar, Mark Conaway, Alan D Rogol
BACKGROUND/AIMS: A meta-analysis was performed to determine the likelihood of hypothalamic-pituitary-adrenal (HPA) axis suppression following short-term cutaneous treatment of atopic dermatitis with topical corticosteroids (TCS) in pediatric patients. METHODS: All published pediatric clinical trials evaluating TCS use with pre- and post-treatment HPA axis assessment by cosyntropin stimulation testing were included. RESULTS: Of 128 eligible trials, 12 were selected for meta-analysis with a total of 522 participants...
June 13, 2018: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29893552/targeting-the-fkbp51-gr-hsp90-complex-to-identify-functionally-relevant-treatments-for-depression-and-ptsd
#14
Jonathan J Sabbagh, Ricardo A Cordova, Dali Zheng, Marangelie Criado-Marrero, Andrea Lemus, Pengfei Li, Jeremy D Baker, Bryce A Nordhues, April L Darling, Carlos Martinez-Licha, Daniel A Rutz, Shreya Patel, Johannes Buchner, James W Leahy, John Koren, Chad A Dickey, Laura J Blair
Genetic and epigenetic alterations in FK506-binding protein 5 (FKBP5) have been associated with increased risk for psychiatric disorders, including post-traumatic stress disorder (PTSD). These variants can increase the expression of FKBP5, the gene that encodes FKBP51. Excess FKBP51 promotes hypothalamic-pituitary-adrenal (HPA) axis dysregulation through altered glucocorticoid receptor (GR) signaling. Thus, we hypothesized that GR activity could be restored by perturbing FKBP51. Here, we report that depletion of FKBP51 from the GR/90kDa heat shock protein (Hsp90) complex increased GR signaling in vivo...
June 12, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29892510/physiological-and-behavioral-responses-of-house-sparrows-to-repeated-stressors
#15
Brenna M G Gormally, Jessica Wright-Lichter, J Michael Reed, L Michael Romero
Despite decades of research, we still lack a complete understanding of what factors influence the transition of the necessary and adaptive acute stress response to what has become known as chronic stress. This gap in knowledge has illuminated the necessity for studies that examine the thresholds between these two sides of the stress response. Here, we determine how repeated exposure to acute stressors influences physiological and behavioral responses. In this repeated measures study, house sparrows ( Passer domesticus ) were exposed to a chronic stress protocol...
2018: PeerJ
https://www.readbyqxmd.com/read/29889246/understanding-context-dependence-in-glucocorticoid-fitness-relationships-the-role-of-the-nature-of-the-challenge-the-intensity-and-frequency-of-stressors-and-life-history
#16
Laura A Schoenle, Cedric Zimmer, Maren N Vitousek
It has been well-established that there is variation in the strength and direction of the relationship between circulating glucocorticoids (GCs) and fitness. When studies demonstrate such variation or the direction of the GC-fitness relationship is unexpected, the results are often attributed to context-dependency. However, descriptors of context can be vague (e.g. "environmental context") and few studies explicitly test how the optimal hypothalamic-pituitary-adrenal (HPA) axis response to stressors varies across specific contexts...
June 7, 2018: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/29888307/sex-differences-in-chronic-stress-responses-and-alzheimer-s-disease
#17
REVIEW
Yan Yan, Sky Dominguez, Daniel W Fisher, Hongxin Dong
Clinical studies indicate that Alzheimer's disease (AD) disproportionately affects women in both disease prevalence and severity, but the mechanisms underlying this sex divergence are unknown. Though some have suggested this difference in risk is a reflection of known differences in longevity between men and women, mounting clinical and preclinical evidence supports women also having intrinsic susceptibilities towards the disease. While a number of potential risk factors have been hypothesized to affect these differences in risks, none have been definitively verified...
February 2018: Neurobiology of Stress
https://www.readbyqxmd.com/read/29884193/differential-responses-of-stressful-elements-to-predatory-exposure-in-behavior-lateralized-mice
#18
Jiacai Yang, Lin Zhang, Jian-Ping Dai, Jun Zeng, Xiao-Xuan Chen, Ze-Feng Xie, Kang-Sheng Li, Yun Su
BACKGROUND: Predatory stress as a psychological stressor can elicit the activation of the hypothalamic-pituitary-adrenal (HPA) axis, which is involved in the dialogue of the neuroimmunoendocrine network. The brain has been proven to regulate the activity of the HPA axis by way of lateralization. In the present study, we probed the pivotal elements of the HPA circuitry including CRH, GR and a multifunctional cytokine in behavior-lateralized mice to determine their changes when the animals were subjected to predator exposure...
June 8, 2018: Behavioral and Brain Functions: BBF
https://www.readbyqxmd.com/read/29882567/an-%C3%AE-3-fatty-acid-deficient-diet-during-gestation-induces-depressive-like-behavior-in-rats-the-role-of-the-hypothalamo-pituitary-adrenal-hpa-system
#19
Mimi Tang, Yiping Liu, Lu Wang, Huande Li, Hualin Cai, Min Zhang, Ruili Dang, Ying Xue, Yanqin Wu
Low intake of omega-3 (Ω-3) polyunsaturated fatty acids (PUFAs) especially docosahexaenoic acid (DHA) is associated with postpartum depression. DHA deficiency is accompanied by impaired attention and cognition, and will precipitate psychiatric symptoms. However, the effects of dietary DHA on postpartum depression remain unclear. We established a normal pregnancy model to evaluate whether an Ω-3 PUFA-deficient diet during gestation could induce depressive-like behavior and aggravate dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis in rats...
June 8, 2018: Food & Function
https://www.readbyqxmd.com/read/29879676/genetic-variation-in-the-glucocorticoid-receptor-and-psychopathology-after-dexamethasone-administration-in-cardiac-surgery-patients
#20
Lotte Kok, Manon H Hillegers, Dieuwke S Veldhuijzen, Marco Pm Boks, Jan M Dieleman, Diederik van Dijk, Marian Joëls, Christiaan H Vinkers
The glucocorticoid receptor (GR) agonist dexamethasone is frequently used for its anti-inflammatory properties. We recently showed that a single high-dose of dexamethasone had long-lasting protective effects on the development of psychopathology after cardiac surgery and postoperative intensive care unit stay. In this study, we investigated whether common genetic variation in the hypothalamic-pituitary-adrenal (HPA)-axis would influence the susceptibility for PTSD and depression after dexamethasone administration...
May 31, 2018: Journal of Psychiatric Research
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