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https://www.readbyqxmd.com/read/29035709/heart-rate-variability-and-salivary-cortisol-in-very-preterm-children-during-school-age
#1
Natalie Urfer-Maurer, Sebastian Ludyga, Tobias Stalder, Serge Brand, Edith Holsboer-Trachsler, Markus Gerber, Alexander Grob, Peter Weber, Sakari Lemola
The autonomic nervous system (ANS) plays a major role in the human stress response and reflects physical and psychological adaptability to a changing environment. Long-term exposure to early life stressors may alter the function of the ANS. The present study examines differences in the ANS between children born very preterm and full-term as well as the association between the ANS and the hypothalamic-pituitary-adrenal (HPA) axis, the other main branch of the human stress system. Fifty-four healthy children born very preterm (<32nd gestational week) and 67 full-term children aged 7-12 years provided data for the present study...
October 5, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29035323/hypothalamic-pituitary-adrenal-axis-modulation-of-glucocorticoids-in-the-cardiovascular-system
#2
REVIEW
Natalie G Burford, Natalia A Webster, Diana Cruz-Topete
The collective of endocrine organs acting in homeostatic regulation-known as the hypothalamic-pituitary-adrenal (HPA) axis-comprises an integration of the central nervous system as well as peripheral tissues. These organs respond to imminent or perceived threats that elicit a stress response, primarily culminating in the release of glucocorticoids into the systemic circulation by the adrenal glands. Although the secretion of glucocorticoids serves to protect and maintain homeostasis in the typical operation at baseline levels, inadequate regulation can lead to physiologic and psychologic pathologies...
October 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29033975/a-hypothesis-and-review-of-the-relationship-between-selection-for-improved-production-efficiency-coping-behavior-and-domestication
#3
Wendy M Rauw, Anna K Johnson, Luis Gomez-Raya, Jack C M Dekkers
Coping styles in response to stressors have been described both in humans and in other animal species. Because coping styles are directly related to individual fitness they are part of the life history strategy. Behavioral styles trade off with other life-history traits through the acquisition and allocation of resources. Domestication and subsequent artificial selection for production traits specifically focused on selection of individuals with energy sparing mechanisms for non-production traits. Domestication resulted in animals with low levels of aggression and activity, and a low hypothalamic-pituitary-adrenal (HPA) axis reactivity...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/29033885/emotions-and-steroid-secretion-in-aging-men-a-multi-study-report
#4
Andreas Walther, Patricia Waldvogel, Emilou Noser, Jessica Ruppen, Ulrike Ehlert
Although aging increases the risk of cognitive and socioemotional deterioration, it has also been shown to be accompanied by an increase in experienced positive emotions and a decrease in negative emotions. Steroid hormones and age-related alterations in secretion patterns have been suggested to play a crucial role in these age-related changes in emotional experience. Importantly, previous studies identified effects of neuroactive hormones on age-related alterations in emotional experience, which vary by sex and depression levels...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29033349/a-polymorphism-in-the-glucocorticoid-receptor-gene-is-associated-with-refractory-hypotension-in-premature-infants
#5
Kei Ogasawara, Maki Sato, Koichi Hashimoto, Takashi Imamura, Hayato Go, Mitsuaki Hosoya
BACKGROUND: Glucocorticoids play an important role in endocrine control. The association of glucocorticoid receptor (GR) gene polymorphisms with altered sensitivity to glucocorticoid therapy has been reported in adults. However, there are few such reports in infants. The present study analyzed the prevalence of four GR polymorphisms in preterm infants born before 30 weeks of gestation and determined the associations between these polymorphisms and clinical outcomes in the infants. METHODS: Totally, 41 preterm infants born at two hospitals in Fukushima were retrospectively screened for the presence of four GR gene polymorphisms, using a TaqMan single-nucleotide polymorphism genotyping assay...
September 27, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29032322/classroom-social-experiences-in-early-elementary-school-relate-to-diurnal-cortisol-levels
#6
Pia Behnsen, Marieke Buil, Susanne Koot, Anja Huizink, Pol van Lier
Social stress has been linked to altered hypothalamic-pituitary-adrenocorticol (HPA) axis activation. During elementary school, children can become exposed to negative peer relations, such as poor appraisal among classroom peers, which is considered a social stressor. However, little is known about the association between classroom peer appraisal and the physiological stress system in children. The goal of this study was to examine the association of peer acceptance and peer non-acceptance with diurnal cortisol concentrations in 222 children from 20 mainstream elementary schools (Mage=6...
October 2, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29032090/hypothalamic-pituitary-adrenal-hpa-axis-functioning-as-predictor-of-antidepressant-response-meta-analysis
#7
REVIEW
Susanne Fischer, Christine Macare, Anthony J Cleare
OBJECTIVE: Although antidepressants are effective, around 50% of depressed patients are non-responsive. At the same time, some patients show alterations in the hypothalamic-pituitary-adrenal (HPA) axis. Due to interactions with central monoaminergic systems, these may profit less from antidepressants. METHOD: To determine whether non-responders and responders differed in pre-treatment HPA axis functioning, the Cochrane Library, EMBASE, MEDLINE, and PsycINFO were searched...
October 12, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29030008/assessment-of-leukocyte-activity-in-mice-devoid-of-the-glucocorticoid-receptor-in-the-noradrenergic-system-gr-dbhcre
#8
Adam Roman, Justyna Kuśmierczyk, Grzegorz Kreiner, Irena Nalepa
Disturbances in brain monoamines, overactivity of the hypothalamo-pituitary adrenal (HPA) axis and pro-inflammatory tendency in the immune system are the key features of depressive disorders. Recently, several murine lines with mutations in glucocorticoid receptors (GRs) have been generated and these animals may be utilized for study depressive-like disorders. In the present study, we have investigated whether selective ablation of GRs in noradrenergic neurons affects functional properties of leukocytes and redirects them towards pro-inflammatory activity...
October 8, 2017: Immunobiology
https://www.readbyqxmd.com/read/29025979/the-melatonin-receptor-agonist-piromelatine-ameliorates-impaired-glucose-metabolism-in-chronically-stressed-rats-fed-a-high-fat-diet
#9
Jun Zhou, Deng Wang, Xiaohong Luo, Xu Jia, Maoxing Li, Laudon Moshe, Ruxue Zhang, Zhengping Jia
Modern lifestyle factors (high-caloric food rich in fat) and daily chronic stress are important risk factors for metabolic disturbances. Increased hypothalamic-pituitary-adrenal (HPA) axis activity and the subsequent excess production of glucocorticoids (GCs) in response to chronic stress (CS) leads to increases in metabolic complications, such as type 2 diabetes and insulin resistance (IR). Melatonin (MLT), which protects several regulatory components of the HPA axis from GC-induced deterioration, might improve glucose homeostasis...
October 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29023418/association-between-stress-and-the-hpa-axis-in-the-atopic-dermatitis
#10
REVIEW
Tzu-Kai Lin, Lily Zhong, Juan Luis Santiago
The hypothalamic-pituitary-adrenal (HPA) axis is one of the body's neuroendocrine networks that responds to psychological stress (PS). In the skin, there exists a peripheral HPA axis similar to the central axis. Glucocorticoids (GCs) are key effector molecules of the HPA axis and are essential for cutaneous homeostasis. Atopic dermatitis (AD) is a condition typically characterized by a chronic relapsing course that often results in PS. HPA dysfunction is present in AD patients by the decreased response of GCs elevation to stress as compared to those unaffected by AD...
October 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29023380/the-gut-microbiome-feelings-of-the-brain-a-perspective-for-non-microbiologists
#11
REVIEW
Aaron Lerner, Sandra Neidhöfer, Torsten Matthias
Objectives: To comprehensively review the scientific knowledge on the gut-brain axis. Methods: Various publications on the gut-brain axis, until 31 July 2017, were screened using the Medline, Google, and Cochrane Library databases. The search was performed using the following keywords: "gut-brain axis", "gut-microbiota-brain axis", "nutrition microbiome/microbiota", "enteric nervous system", "enteric glial cells/network", "gut-brain pathways", "microbiome immune system", "microbiome neuroendocrine system" and "intestinal/gut/enteric neuropeptides"...
October 12, 2017: Microorganisms
https://www.readbyqxmd.com/read/29021740/electroacupuncture-alleviates-surgical-trauma-induced-hypothalamus-pituitary-adrenal-axis-hyperactivity-via-microrna-142
#12
Jing Zhu, Zhejun Chen, Zehui Meng, Minda Ju, Mizhen Zhang, Gencheng Wu, Haidong Guo, Zhanzhuang Tian
Electroacupuncture (EA) could improve the hyperactivity of the hypothalamus pituitary adrenal (HPA) axis induced by hepatectomy. However, its underlying mechanism still remains largely unclear. Here, we found that hypothalamic corticotrophin releasing hormone (CRH) modulates the function of the HPA axis, while hepatectomy induced an HPA axis disorder and EA application could regulate the hypothalamic CRH. We first demonstrated that microRNAs (miRNAs) target on CRH via bioinformatics analysis and screened them in the primary hypothalamic neurons...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29020649/neuroendocrine-stress-reactivity-of-male-c57bl-6n-mice-following-chronic-oral-corticosterone-exposure-during-adulthood-or-adolescence
#13
Ziasmin Shahanoor, Razia Sultana, Madelyn R Baker, Russell D Romeo
Adolescence is associated with the maturation of the hypothalamic-pituitary-adrenal (HPA) axis, the major neuroendocrine axis mediating the hormonal stress response. Adolescence is also a period in development marked by a variety of stress-related vulnerabilities, including psychological and physiological dysfunctions. Many of these vulnerabilities are accompanied by a disrupted HPA axis. In adult mice, a model of disrupted HPA function has been developed using oral chronic corticosterone administration via the drinking water, which results in various physiological and neurobehavioral abnormalities, including changes in stress reactivity and anxiety-like behaviors...
October 4, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29019089/exercise-and-the-cortisol-awakening-response-a-systematic-review
#14
REVIEW
Travis Anderson, Laurie Wideman
BACKGROUND: The cortisol awakening response (CAR) has been used as a biomarker of stress response in a multitude of psychological investigations. While a myriad of biochemical responses have been proposed to monitor responses to exercise training, the use of CAR within the exercise and sports sciences is currently limited and is a potentially underutilized variable. Therefore, the purpose of this review was to collate studies that incorporate both exercise and CAR, in an effort to better understand (a) whether CAR is a useful marker for monitoring exercise stress and (b) how CAR may be most appropriately used in future research...
October 10, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28993972/the-effect-of-acute-and-repeated-stress-on-crh-r1-and-crh-r2-mrna-expression-in-pituitaries-of-wild-type-and-crh-knock-out-mice
#15
Vera Klenerova, Richard Kvetnansky, Sixtus Hynie
The activation of the HPA axis is the endocrine measure of stress responsiveness that is initiated by corticotropin-releasing hormone (CRH). CRH exerts its effects via CRHR1 and CRH-R2 receptors coupled to the cAMP signaling system and this process involves transcription factor cAMP-responsive element-binding protein (CREB).This study investigated the role of CRH and the possible involvement of CREB in gene regulation of CRH receptor, under basal conditions and after stress application in the pituitary. We used wild type (wt +/+) controls and CRH knock-out (CRH-KO -/-) male mice...
October 9, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28987899/plasma-lipoproteins-in-posttraumatic-stress-disorder-patients-compared-to-healthy-controls-and-their-associations-with-the-hpa-and-hpt-axis
#16
Giel-Jan de Vries, Roel Mocking, Johanna Assies, Aart Schene, Miranda Olff
BACKGROUND: Based on studies among primarily male veteran subjects, lipoproteins are thought to mediate the association of posttraumatic stress disorder (PTSD) with cardiovascular disease (CVD). However, recent civilian studies with female samples or samples with both sexes represented provide little evidence for this association. Gender, diet and sex-specific effects of stress hormones on lipoproteins may explain this dissociation in findings. METHOD: Cross-sectional analysis of plasma concentrations of total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL) and triglycerides (TG) in a male and female sample of 49 PTSD-patients due to civilian trauma and 45 healthy controls...
September 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28984380/knotting-nets-molecular-junctions-of-interconnecting-endocrine-axes-identified-by-application-of-the-adverse-outcome-pathway-aop-concept
#17
REVIEW
Maria Brüggemann, Oliver Licht, Éva Fetter, Matthias Teigeler, Christoph Schäfers, Elke Eilebrecht
In order to be defined as endocrine disruptor, a substance has to meet several criteria, including the induction of specific adverse effects, specific endocrine mode-of-action and a plausible link between both. Especially the latter criterion might not always be unequivocally determined, particularly as the endocrine system consists of diverse endocrine axes. The axes closely interact with each other, and manipulation of one triggers effects on the other. This review aimed at identifying some of the many interconnections between these axes...
October 6, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28983508/specific-reduction-in-cortisol-stress-reactivity-after-social-but-not-attention-based-mental-training
#18
Veronika Engert, Bethany E Kok, Ioannis Papassotiriou, George P Chrousos, Tania Singer
Psychosocial stress is a public health burden in modern societies. Chronic stress-induced disease processes are, in large part, mediated via the activation of the hypothalamic-pituitary-adrenal (HPA) axis and the sympathetic-adrenal-medullary system. We asked whether the contemplative mental training of different practice types targeting attentional, socio-affective (for example, compassion), or socio-cognitive abilities (for example, perspective-taking) in the context of a 9-month longitudinal training study offers an effective means for psychosocial stress reduction...
October 2017: Science Advances
https://www.readbyqxmd.com/read/28982048/hpa-axis-dysregulation-in-adult-adoptees-twenty-years-after-severe-institutional-deprivation-in-childhood
#19
Robert Kumsta, Wolff Schlotz, Dennis Golm, Dirk Moser, Mark Kennedy, Nicky Knights, Jana Kreppner, Barbara Maughan, Michael Rutter, Edmund Sonuga-Barke
Hypothalamic-pituitary-adrenal (HPA) axis function is disrupted in institutionally-deprived children - reduced morning cortisol, flattened diurnal slope and blunted reactivity persist even after successful adoption into positive family environments. Here we test whether such effects persist into adulthood. Cortisol release across the day (sampled at awakening, 30 and 45min later, and at four points across the day) was investigated in young adult adoptees who had lived in severe deprivation for up to 43 months in early childhood in Ceaușescu's Romanian orphanages and a comparison group of non-deprived UK adoptees (Total N=57; mean age=24±0...
September 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28979893/prenatal-maternal-stress-and-the-risk-of-asthma-in-children
#20
REVIEW
Konstantinos Douros, Maria Moustaki, Sophia Tsabouri, Anna Papadopoulou, Marios Papadopoulos, Kostas N Priftis
Emerging evidence indicate that maternal prenatal stress (MPS) can result in a range of long-term adverse effects in the offspring. The underlying mechanism of MPS is not fully understood. However, its complexity is emphasized by the number of purportedly involved pathways namely, placental deregulated metabolism of maternal steroids, impaired maturation of fetal HPA axis, imbalanced efflux of commensal bacteria across the placenta, and skewed immune development toward Th2. Fetal programming probably exerts a pivotal role in the end result of the above pathways through the modulation of gene expression...
2017: Frontiers in Pediatrics
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