keyword
MENU ▼
Read by QxMD icon Read
search

HPA axis

keyword
https://www.readbyqxmd.com/read/28535535/inflammation-is-an-important-covariate-for-the-crosstalk-of-sleep-and-the-hpa-axis-in-rheumatoid-arthritis
#1
Rainer H Straub, Jaqueline Detert, René Dziurla, Ingo Fietze, Peter-Andreas Loeschmann, Gerd R Burmester, Frank Buttgereit
Rheumatoid arthritis (RA) patients have sleep problems, and inflammation influences sleep. We demonstrated that sleep quality improves during intensified treatment with methotrexate (MTX) or etanercept (ETA). Since the hypothalamic-pituitary-adrenal (HPA) axis is involved in sleep regulation, this study investigated the interrelation between sleep parameters, inflammation as objectified by C-reactive protein (CRP), and serum cortisol and adrenocorticotropic hormone (ACTH) levels. Thirty-one eligible patients (disease activity score, DAS28CRP ≥3...
May 24, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28534097/increased-hpa-axis-activity-and-serum-tryptophan-in-naswar-dipping-tobacco-users-a-case-control-study
#2
Faiza Sajid, Samina Bano
Nicotine is the principal addictive agent present in Naswar, a smokeless dipping tobacco product. 5-Hydroxytryptamine (5-HT) has been implicated in the reinforcement properties of nicotine. Also, the hypothalamic-pituitary-adrenal (HPA) axis is of vital importance in evaluating the response to stress and nicotine addiction. The study aimed to evaluate serum tryptophan and cortisol levels in Naswar users in relation to addiction. Additionally, serum cotinine levels were also determined to assess daily nicotine exposure...
May 22, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28533747/selective-inhibition-of-orexin-2-receptors-prevents-stress-induced-acth-release-in-mice
#3
Sujin Yun, Michelle Wennerholm, Jonathan E Shelton, Pascal Bonaventure, Michael A Letavic, Brock T Shireman, Timothy W Lovenberg, Christine Dugovic
Orexins peptides exert a prominent role in arousal-related processes including stress responding, by activating orexin-1 (OX1R) and orexin-2 (OX2R) receptors located widely throughout the brain. Stress or orexin administration stimulates hyperarousal, adrenocorticotropic hormone (ACTH) and corticosterone release, and selective OX1R blockade can attenuate several stress-induced behavioral and cardiovascular responses but not the hypothalamic-pituitary-adrenal (HPA) axis activation. As opposed to OX1R, OX2R are preferentially expressed in the paraventricular hypothalamic nucleus which is involved in the HPA axis regulation...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28530342/-behavioral-physiological-and-morphological-characteristics-associated-with-post-traumatic-response-to-continuous-exposure-versus-alternate-exposure-in-an-animal-model-of-post-traumatic-stress-disorder
#4
Ishay Ostfeld, Zeev Kaplan, Hagit Cohen
AIMS: The aim of this study was to approximate these conditions in an animal model of post-traumatic stress disorder (PTSD). More specifically, the neurobiological basis of these conditions, focusing on stress-related behavioral changes, HPA-axis and morphological were evaluated. The intention was to employ this well-validated, reproducible and reliable model for PTSD, to elicit data which will provide some guidance in the planning of a prospective study involving military personal. BACKGROUND: Combat personnel are exposed to significant stress and hardship, both physical and emotional, during their service and especially during active combat...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28528436/the-unresolved-riddle-of-glucocorticoid-withdrawal
#5
REVIEW
F Guerrero Pérez, A P Marengo, C Villabona Artero
Glucocorticoid (GC) therapy is the most common cause of adrenal insufficiency (AI). The real prevalence of AI after GC is unknown but it could involve more than 30% of patients. Some gene variation has been associated with the variability of hypothalamic-pituitary-adrenal (HPA) axis and this issue could contribute to the individual variation of adrenal function after GC treatment. Symptoms and signs of AI are nonspecific and frequently the diagnosis is delayed. Dosage, duration of treatment, administration route and serum cortisol value are not completely useful to predict AI...
May 20, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28528397/perioperative-hypothalamic-pituitary-adrenal-function-in-patients-with-silent-corticotroph-adenomas
#6
Abdelle F Cheres, Nadine ElAsmar, Aman Rajpal, Warren R Selman, Baha M Arafah
BACKGROUND: Silent corticotroph adenomas (SCAs) are characterized by strong ACTH immunostaining without clinical manifestations of hypercortisolism. Patients with SCAs often present with mechanical symptoms related to tumor growth. This study investigates the hypothalamic pituitary adrenal axis (HPA) characteristics after adenomectomy in patients with SCAs. METHODS: Biochemical parameters of HPA function were monitored frequently after surgical resection of non-functioning macroadenomas...
May 20, 2017: Pituitary
https://www.readbyqxmd.com/read/28526030/prenatal-bisphenol-a-exposure-and-dysregulation-of-infant-hypothalamic-pituitary-adrenal-axis-function-findings-from-the-apron-cohort-study
#7
Gerald F Giesbrecht, Maede Ejaredar, Jiaying Liu, Jenna Thomas, Nicole Letourneau, Tavis Campbell, Jonathan W Martin, Deborah Dewey
BACKGROUND: Animal models show that prenatal bisphenol A (BPA) exposure leads to sexually dimorphic disruption of the neuroendocrine system in offspring, including the hypothalamic-pituitary-adrenal (HPA) neuroendocrine system, but human data are lacking. In humans, prenatal BPA exposure is associated with sex-specific behavioural problems in children, and HPA axis dysregulation may be a biological mechanism. The objective of the current study was to examine sex differences in associations between prenatal maternal urinary BPA concentration and HPA axis function in 3 month old infants...
May 19, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28523545/anxiety-and-epigenetics
#8
Andrew A Bartlett, Rumani Singh, Richard G Hunter
Anxiety disorders are highly prevalent psychiatric disorders often comorbid with depression and substance abuse. Twin studies have shown that anxiety disorders are moderately heritable. Yet, genome-wide association studies (GWASs) have failed to identify gene(s) significantly associated with diagnosis suggesting a strong role for environmental factors and the epigenome. A number of anxiety disorder subtypes are considered "stress related." A large focus of research has been on the epigenetic and anxiety-like behavioral consequences of stress...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28522965/adolescent-ethanol-exposure-leads-to-stimulus-specific-changes-in-cytokine-reactivity-and-hypothalamic-pituitary-adrenal-axis-sensitivity-in-adulthood
#9
Andrew S Vore, Tamara Doremus-Fitzwater, Anny Gano, Terrence Deak
Adolescent alcohol use comprises a significant public health concern and is often characterized by binge-like consumption patterns. While ethanol exposure in adulthood has been shown to alter the stress response, including the Hypothalamic-Pituitary-Adrenal (HPA) axis, few studies have examined whether binge-like ethanol exposure during adolescence results in enduring changes in HPA axis sensitivity in adulthood. In the present studies, adolescent Sprague-Dawley rats were given intragastric (i.g.) intubations of ethanol (4 g/kg) or vehicle once per day for three consecutive days, beginning on postnatal day (P) 30 (±1)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28516731/alopecia-areata-hyperactivity-of-the-hypothalamic-pituitary-adrenal-axis-is-a-myth
#10
Beata Bergler-Czop, Bartosz Miziołek, Ligia Brzezińska-Wcisło
INTRODUCTION: Psychological stress is known to cause exacerbation of different skin pathologies including alopecia areata (AA). A hyperactivity of the HPA axis in patients affected by AA (AA-patients) was proposed to be a neuroendocrine response to stress. Still little is known about MSH and cortisol production in AA settings. AIM: The aim of the study was to compare trends in a production of melanocyte-stimulating hormone (MSH) and cortisol in patients with AA-patients and healthy controls...
May 18, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28515682/nitric-oxide-synthase-inhibitor-attenuates-the-effects-of-repeated-restraint-stress-on-synaptic-transmission-in-the-paraventricular-nucleus-of-the-rat-hypothalamus
#11
Magdalena Kusek, Anna Tokarska, Marcin Siwiec, Anna Gadek-Michalska, Bernadeta Szewczyk, Grzegorz Hess, Krzysztof Tokarski
Corticotropin-releasing hormone (CRH)-synthesizing parvocellular neuroendocrine cells (PNCs) of the hypothalamic paraventricular nucleus (PVN) play a key role in the activation of the hypothalamic-pituitary-adrenocortical (HPA) axis. Several studies have demonstrated that synaptic inputs to these cells may undergo stress-related enhancement but, on the other hand, it has been reported that exposition to the same stressor for prolonged time periods may induce a progressive reduction in the response of the HPA axis to homotypic stressors...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28512033/bifidobacterium-cect-7765-modulates-early-stress-induced-immune-neuroendocrine-and-behavioral-alterations-in-mice
#12
A Moya-Pérez, A Perez-Villalba, A Benítez-Páez, I Campillo, Y Sanz
Emerging evidence suggests that there is a window of opportunity within the early developmental period, when microbiota-based interventions could play a major role in modulating the gut-brain axis and, thereby, in preventing mood disorders. This study aims at evaluating the effects and mode of action of Bifidobacterium pseudocatenulatum CECT 7765 in a murine model of chronic stress induced by maternal separation (MS). C57Bl/6J male breast-fed pups were divided into four groups, which were subjected or not to MS and supplemented with placebo or B...
May 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28511913/the-non-peptide-crh1-antagonist-cp-154-526-elicits-a-paradoxical-route-dependent-activation-of-the-hpa-axis
#13
Dmitry V Zaretsky, Maria V Zaretskaia, Sumit Sarkar, Daniel E Rusyniak, Joseph A DiMicco
The corticotropin-releasing hormone (CRH) plays an important role in mediating physiological response to stress and is thought to be involved in the development of various psychiatric disorders. In this paper, we compare the differences between the effect of intraperitoneal (i.p.) and intraarterial (i.a.) administration of the non-peptide CRH1 antagonist CP-154,526 (CP) (10 and 20mg/kg) on plasma adrenocorticotropic hormone levels (ACTH), heart rate, MAP, and c-Fos expression in the paraventricular nucleus of the hypothalamus...
May 13, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28511048/defensive-freezing-links-hypothalamic-pituitary-adrenal-axis-activity-and-internalizing-symptoms-in-humans
#14
Hannah C M Niermann, Bernd Figner, Anna Tyborowska, Jacobien M van Peer, Antonius H N Cillessen, Karin Roelofs
The Hypothalamic-Pituitary-Adrenal (HPA)-axis plays an important role in the expression of defensive freezing. Adaptive freezing reactivity, characterized by an immediate increase in acute stress and timely termination upon threat offset or need to act, is essential for adequate stress coping. Blunted HPA-axis activity in animals is associated with blunted freezing reactivity and internalizing symptoms. Despite their potential relevance, it remains unknown whether these mechanisms apply to humans and human psychopathology...
May 3, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28511047/birth-weight-and-postnatal-growth-in-preterm-born-children-are-associated-with-cortisol-in-early-infancy-but-not-at-age-8-years
#15
Charlotte A Ruys, Bibian van der Voorn, Harrie N Lafeber, Monique van de Lagemaat, Joost Rotteveel, Martijn J J Finken
BACKGROUND: Preterm birth has been associated with altered hypothalamic-pituitary-adrenal (HPA-) axis activity as well as cardiometabolic diseases and neurodevelopmental impairments later in life. We assessed cortisol from term age to age 8 y in children born preterm, to explore the development of HPA-axis activity in association with intrauterine and early-postnatal growth until 6 mo. corrected age. METHODS: In 152 children born at a gestational age ≤32 wks. and/or with a birth weight ≤1,500g, random serum cortisol was assessed at term age (n=150), 3 mo...
May 4, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28510653/chronic-corticosterone-treatment-during-adolescence-has-significant-effects-on-metabolism-and-skeletal-development-in-male-c57bl6-n-mice
#16
Scott A Kinlein, Ziasmin Shahanoor, Russell D Romeo, Ilia N Karatsoreos
Glucocorticoids are potent modulators of metabolic and behavioral function. Their role as mediators in the "stress response" is well known, but arguably their primary physiological function is in the regulation of cellular and organismal metabolism. Disruption of normal glucocorticoid function is linked to metabolic disease, such as Cushing's syndrome. Glucocorticoids are also elevated in many forms of obesity, suggesting that there are bidirectional effects of these potent hormones on metabolism and metabolic function...
May 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28509906/therapeutic-efficacy-of-atypical-antipsychotic-drugs-by-targeting-multiple-stress-related-metabolic-pathways
#17
H L Cai, P Jiang, Q Y Tan, R L Dang, M M Tang, Y Xue, Y Deng, B K Zhang, P F Fang, P Xu, D X Xiang, H D Li, J K Yao
Schizophrenia (SZ) is considered to be a multifactorial brain disorder with defects involving many biochemical pathways. Patients with SZ show variable responses to current pharmacological treatments of SZ because of the heterogeneity of this disorder. Stress has a significant role in the pathophysiological pathways and therapeutic responses of SZ. Atypical antipsychotic drugs (AAPDs) can modulate the stress response of the hypothalamic-pituitary-adrenal (HPA) axis and exert therapeutic effects on stress by targeting the prefrontal cortex (PFC) and hippocampus...
May 16, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28508690/gene-polymorphisms-associated-with-temperament
#18
Xiaoyan Qiu, Graeme B Martin, Dominique Blache
When individuals are exposed to stressful environmental challenges, the response varies widely in one or more of three components: psychology, behavior and physiology. This variability among individuals can be defined as temperament. In recent years, an increasing large body of evidence suggests that the dimensions of temperament, as well as personality, psychological disorders and behavioral traits, are influenced by genetic factors, and much of the variation appears to involve variation in genes or gene polymorphisms in the hypothalamic-pituitary-adrenocortical (HPA) axis and the behavior-controlling neurotransmitter networks...
May 16, 2017: Journal of Neurogenetics
https://www.readbyqxmd.com/read/28508370/a-proteomic-evaluation-of-sympathetic-activity-biomarkers-of-the-hypothalamus-pituitary-adrenal-axis-by-western-blotting-technique-following-experimental-traumatic-brain-injury
#19
Hale Zerrin Toklu, Yasemin Sakarya, Nihal Tümer
Endocrine disorders and autonomic dysfunction are common paradigms following traumatic brain injury (TBI). Alterations in the hypothalamus-pituitary-adrenal (HPA) axis following TBI may result in impaired vasopressor response, energy imbalance, fatigue, depression, or neurological disorders. Autonomic dysfunction is a common disorder following TBI. The sympathetic activity markers on HPA axis can be measured by Western blot protein analysis. Tyrosine hydroxylase, dopamine beta hydroxylase are the key enzymes for the synthesis of norepinephrine; and neuropeptide Y (NPY) is the peptide that is co-stored and co-released with norepinephrine...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28506881/altered-circadian-patterns-of-salivary-cortisol-in-individuals-with-schizophrenia-a-critical-literature-review
#20
Nathalie Coulon, Sylvie Brailly-Tabard, Michel Walter, Sylvie Tordjman
This article focuses on stress vulnerability in schizophrenia through an integrated clinical and biological approach. The objective of this article is to better understand the relationships between vulnerability, stress and schizophrenia. First, the concept of vulnerability is defined and several models of vulnerability in schizophrenia are reviewed. Second, a section is developed on the biology of stress, and more specifically on the stress responses of the hypothalamo-pitutary adrenal (HPA) axis. Then, studies of cortisol circadian rhythms are summarized, suggesting hyper-reactivity of the HPA axis in patients with schizophrenia and high risk individuals for schizophrenia...
May 12, 2017: Journal of Physiology, Paris
keyword
keyword
4893
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"