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Chronic adrenal stress

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https://www.readbyqxmd.com/read/29775122/nitration-of-mnsod-in-the-carotid-body-and-adrenal-gland-induced-by-chronic-intermittent-hypoxia
#1
Esteban A Moya, Paulina Arias, Rodrigo Iturriaga
Chronic intermittent hypoxia (CIH), main feature of obstructive sleep apnea, produces nitro-oxidative stress, which contributes to potentiate carotid body (CB) chemosensory discharges and sympathetic-adrenal-axis activity, leading to hypertension. The MnSOD enzymatic activity, a key enzyme on oxidative stress control, is reduced by superoxide-induced nitration. However, the effects of CIH-induced nitration on MnSOD enzymatic activity in the CB and adrenal gland are not known. We studied the effects of CIH on MnSOD protein and immunoreactive (MnSOD-ir) levels in the CB, adrenal gland and superior cervical ganglion (SCG), and on 3-nitrotyrosine (3-NT-ir), CuZnSOD (CuZnSOD-ir), MnSOD nitration, and its enzymatic activity in the CB and adrenal gland from male Sprague-Dawley rats exposed to CIH for 7 days...
May 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29761890/glucocorticoid-receptor-gene-variants-and-lower-expression-of-nr3c1-are-associated-with-cocaine-use
#2
Andrea B Schote, Kristina Jäger, Sara L Kroll, Matthias Vonmoos, Lea M Hulka, Katrin H Preller, Jobst Meyer, Edna Grünblatt, Boris B Quednow
Animal and cross-sectional human studies suggest that chronic cocaine use is associated with altered responsivity of the hypothalamic-pituitary-adrenal axis to stress. Moreover, increased susceptibility to stress has been proposed as an important factor for development, maintenance and relapse of cocaine addiction. As the glucocorticoid receptor gene (NR3C1) mediates genomic effects of the stress hormone cortisol, we investigated NR3C1 expression and the association of NR3C1 genotypes with cocaine use, addiction and comorbid psychiatric symptoms in 126 chronic cocaine users and 98 stimulant-naïve healthy controls...
May 15, 2018: Addiction Biology
https://www.readbyqxmd.com/read/29753694/physiological-adaptation-of-the-growth-restricted-fetus
#3
REVIEW
Karel Maršál
The growth-restricted fetus in utero is exposed to a hostile environment and suffers undernutrition and hypoxia. To cope with the stress, the fetus changes its physiological functions. These adaptive changes aid intrauterine survival; however, they can lead to permanent functional and structural changes that can contribute to the development of serious chronic diseases later in life. Epigenetic mechanisms are an important part of the pathophysiological processes behind this "developmental origin of adult diseases...
February 24, 2018: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/29731823/-epigallocatechin-3-gallate-protects-pc12-cells-against-corticosterone-induced-neurotoxicity-via-the-hedgehog-signaling-pathway
#4
Sha Feng, Jue Liu, Biao Cheng, Aiping Deng, Hong Zhang
It has been acknowledged that environmental stress is a risk factor for developing mental disorders. Chronic stress may contribute to the hyperactivation of the hypothalamic-pituitary-adrenal (HPA) axis and a sustained rise in the levels of glucocorticoids (GCs). A high concentration of corticosterone (CORT) damages neuronal PC12 cells. It has been reported that (-)-Epigallocatechin-3-gallate (EGCG), a major component of green tea, exhibits neuroprotective activity. However, the protective effect of EGCG on neuronal cells injured by CORT remains to be elucidated...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29716733/acute-adrenal-crisis-and-mortality-in-adrenal-insufficiency-still-a-concern-in-2018
#5
Stefanie Hahner
Despite established replacement therapy, mortality in patients suffering from chronic adrenal insufficiency is increasing. This may be partly explained by the fact that lack of adrenal stress hormones impairs the body's capacity to deal adequately with stress situations, resulting in life-threatening adrenal crises. Since many such situations are of rapid onset, concepts that allow for quick response to emergencies are particularly important. Optimal education for patients and relatives, improved awareness on the part of health professionals and the development of new easy-to-use drugs for acute therapy are of prime importance...
April 28, 2018: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29710825/impact-of-a-specific-amino-acid-composition-with-micronutrients-on-well-being-in-subjects-with-chronic-psychological-stress-and-exhaustion-conditions-a-pilot-study
#6
Deborah Armborst, Christine Metzner, Birgit Alteheld, Norman Bitterlich, Daniela Rösler, Roswitha Siener
Chronic work-life stress leads to dysfunction of the hypothalamus⁻pituitary⁻adrenal axis, the autonomic nervous system, and the serotonergic system, with resultant impairment of overall well-being. Aim of the study was to improve perceived stress by a specific amino acid composition with micronutrients in the verum versus placebo group. A total of 59 participants (18⁻65 years) with self-reported perceived chronic stress and exhaustion conditions participated in this randomized, double-blind, placebo-controlled study...
April 29, 2018: Nutrients
https://www.readbyqxmd.com/read/29681219/antidepressant-like-effects-of-embelin-and-its-possible-mechanisms-of-action-in-chronic-unpredictable-stress-induced-mice
#7
Bailing Wang, Xiaoqin Chen, Tiantian Zhou, Xiaoying Wang
Objectives Embelin, a principal active constituent of embelin ribes burm, has good therapeutic effects on various diseases. To explore the effects and underlying mechanisms of embelin on depression, we made a preliminary study to clarify this issue. Methods We first used chronic unpredictable stress (CUS) to construct the model of depression in mice. Then, we determined the effects of embelin on CUS-induced behavioral dysfunction using open field test, sucrose preference test, tail suspension test and forced swimming test...
April 21, 2018: Neurological Research
https://www.readbyqxmd.com/read/29674169/intergenerational-gene-%C3%A3-environment-interaction-of-fkbp5-and-childhood-maltreatment-on-hair-steroids
#8
Alexandra M Koenig, Laura Ramo-Fernández, Christina Boeck, Maria Umlauft, Markus Pauly, Elisabeth B Binder, Clemens Kirschbaum, Harald Gündel, Alexander Karabatsiakis, Iris-Tatjana Kolassa
BACKGROUND: The inconsistency in results of cortisol alterations after childhood maltreatment (CM) might arise due to the fact that no study so far considered the effects of environmental factors such as maltreatment load and genetic factors such as the influence of FKBP5 genotype on stress hormone regulation. This study analyzed the interaction between the single nucleotide polymorphism rs1360780 within the FKBP5 gene and the severity of maternal CM experiences (maltreatment load) on hair steroid levels of mother-infant-dyads...
April 5, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29656013/escitalopram-alleviates-stress-induced-alzheimer-s-disease-like-tau-pathologies-and-cognitive-deficits-by-reducing-hypothalamic-pituitary-adrenal-axis-reactivity-and-insulin-gsk-3%C3%AE-signal-pathway-activity
#9
Chao Wu, Wei-Gang Gong, Yan-Juan Wang, Jun-Jun Sun, Hong Zhou, Zhi-Jun Zhang, Qing-Guo Ren
Chronic stress, a causal factor for depression, can also cause cognitive impairments and tau pathology. However, whether and how the selective serotonin reuptake inhibitor antidepressant escitalopram ameliorates these effects are still unclear. In the present study, rats were subjected to chronic mild unpredictable stress for 8 weeks. Following the initial 4 weeks, the stressed animals were separated into susceptible (depressive) and unsusceptible (resistant) groups based on behavioral tests. Then, escitalopram (10 mg/kg i...
July 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29652832/sympathetic-nerve-hyperactivity-in-the-spleen-causal-for-nonpathogenic-driven-chronic-immune-mediated-inflammatory-diseases-imids
#10
REVIEW
Denise L Bellinger, Dianne Lorton
Immune-Mediated Inflammatory Diseases (IMIDs) is a descriptive term coined for an eclectic group of diseases or conditions that share common inflammatory pathways, and for which there is no definitive etiology. IMIDs affect the elderly most severely, with many older individuals having two or more IMIDs. These diseases include, but are not limited to, type-1 diabetes, obesity, hypertension, chronic pulmonary disease, coronary heart disease, inflammatory bowel disease, and autoimmunity, such as rheumatoid arthritis (RA), Sjőgren's syndrome, systemic lupus erythematosus, psoriasis, psoriatic arthritis, and multiple sclerosis...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29627713/chronic-stress-hair-cortisol-and-depression-a-prospective-and-longitudinal-study-of-medical-internship
#11
Stefanie E Mayer, Nestor L Lopez-Duran, Srijan Sen, James L Abelson
BACKGROUND: Stress plays a causal role in depression onset, perhaps via alteration of hypothalamic-pituitary-adrenal (HPA) axis functioning. HPA axis hyperactivity has been reported in depression, though inconsistently, and the nature of this relationship remains unclear, partly because cortisol measurement over time has been challenging. Development of hair cortisol assessment, a method that captures cortisol over prolonged periods of time, creates new possibilities. In this study, hair cortisol was incorporated into a prospective and longitudinal study of medical internship, stress and symptoms of depression...
March 31, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29627576/magnolol-abrogates-chronic-mild-stress-induced-depressive-like-behaviors-by-inhibiting-neuroinflammation-and-oxidative-stress-in-the-prefrontal-cortex-of-mice
#12
Jie Cheng, Shuqi Dong, Litao Yi, Di Geng, Qing Liu
Magnolol, the main constituent of Magnolia officinalis, has been shown to produce antidepressant-like effect in rodents. Growing evidence shows that neuroinflammation, oxidative stress and neuroendocrine contribute to the pathogenesis of major depression. Here, the aim of this present study was to determine whether magnolol affected these systems in mice exposed to chronic mild stress (CMS). The ameliorative effect of magnolol on depressive-like symptoms was investigated through behavioral tests, including the classical sucrose preference and forced swimming tests...
April 5, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29606179/how-children-s-anxiety-symptoms-impact-the-functioning-of-the-hypothalamus-pituitary-adrenal-axis-over-time-a-cross-lagged-panel-approach-using-hierarchical-linear-modeling
#13
Denise Ma, Lisa A Serbin, Dale M Stack
Anxiety symptoms in childhood and adolescence can have a long-term negative impact on mental and physical health. Although studies have shown dysregulation of the hypothalamus-pituitary-adrenal axis is associated with anxiety disorders, it is unclear how and in what direction children's experiences of anxiety symptoms, which include physiological and cognitive-emotional dimensions, impact the functioning of the hypothalamus-pituitary-adrenal axis over time. We hypothesized that higher physiological symptoms would be contemporaneously associated with hypercortisolism, whereas cognitive-emotional symptoms would be more chronic, reflecting traitlike stability, and would predict hypocortisolism over time...
April 2, 2018: Development and Psychopathology
https://www.readbyqxmd.com/read/29593510/chronic-stress-alters-behavior-in-the-forced-swim-test-and-underlying-neural-activity-in-animals-exposed-to-alcohol-prenatally-sex-and-time-dependent-effects
#14
Vivian Y Y Lam, Charlis Raineki, Lily E Takeuchi, Linda Ellis, Todd S Woodward, Joanne Weinberg
Dysregulation of the hypothalamic-pituitary-adrenal (HPA) stress response has been suggested to play a role in vulnerability to stress-related disorders, such as depression. Prenatal alcohol exposure (PAE) may result in HPA dysregulation, which in turn may predispose individuals to the effects of stress exposure throughout life, and increase their risk of developing depression compared to unexposed individuals. We examined the immediate and delayed effects of chronic unpredictable stress (CUS) in adulthood on behavior of PAE animals in the forced swim test (FST) and the neurocircuitry underlying behavioral, emotional, and stress regulation...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29578315/genes-involved-in-stress-response-influence-lithium-efficacy-in-bipolar-patients
#15
Aleksandra Szczepankiewicz, Beata Narozna, Janusz K Rybakowski, Sebastian Kliwicki, Piotr Czerski, Monika Dmitrzak-Węglarz, Maria Skibińska, Joanna Twarowska-Hauser, Joanna Pawlak
OBJECTIVES: In mood disorders, chronic stimulation with stress results in aberrant regulation of the hypothalamic-pituitary-adrenal (HPA) axis. Lithium was shown to influence HPA axis function. The underlying genetic background as well as environmental context may influence the stress response, and therefore lithium efficacy. The aim of the present study was to analyze if genetic variants located in genes involved in HPA axis regulation affect the response to long-term lithium treatment in bipolar patients...
March 26, 2018: Bipolar Disorders
https://www.readbyqxmd.com/read/29561882/effect-of-developmental-nmdar-antagonism-with-cgp-39551-on-aspartame-induced-hypothalamic-and-adrenal-gene-expression
#16
Kate S Collison, Angela Inglis, Sherin Shibin, Soad Saleh, Bernard Andres, Rosario Ubungen, Jennifer Thiam, Princess Mata, Futwan A Al-Mohanna
RATIONALE: Aspartame (L-aspartyl phenylalanine methyl ester) is a non-nutritive sweetener (NNS) approved for use in more than 6000 dietary products and pharmaceuticals consumed by the general public including adults and children, pregnant and nursing mothers. However a recent prospective study reported a doubling of the risk of being overweight amongst 1-year old children whose mothers consumed NNS-sweetened beverages daily during pregnancy. We have previously shown that chronic aspartame (ASP) exposure commencing in utero may detrimentally affect adulthood adiposity status, glucose metabolism and aspects of behavior and spatial cognition, and that this can be modulated by developmental N-methyl-D-aspartate receptor (NMDAR) blockade with the competitive antagonist CGP 39551 (CGP)...
2018: PloS One
https://www.readbyqxmd.com/read/29561292/behavioral-effects-of-toll-like-receptor-4-antagonist-eritoran-in-an-experimental-model-of-depression-role-of-prefrontal-and-hippocampal-neurogenesis-and-%C3%AE-aminobutyric-acid-glutamate-balance
#17
Sawsan Aboul-Fotouh, Mohamed Habib, Tarek Asaad, Samar K Kassim, Mohamed H Ghanem
Depression is the disease of the modern era. The lack of response to the available antidepressants, which were developed on the basis of the monoaminergic deficit hypothesis of depression, has encouraged scientists to think about new mechanisms explaining the pathogenesis of depression. In this context, the inflammatory theory has emerged to clarify many aspects of depression that the previous theories have failed to explain. Toll-like receptor-4 (TLR-4) has a regulatory role in the brain's immune response to stress, and its activation is suggested to play a pivotal role in the pathophysiology of depression...
March 20, 2018: Behavioural Pharmacology
https://www.readbyqxmd.com/read/29561283/wellness-interventions-for-anesthesiologists
#18
Haleh Saadat, Zeev N Kain
PURPOSE OF REVIEW: The review examines the different preventive measures that have been found to be useful to abolish or decrease the negative effects of burnout and increase resilience in anesthesiologists. RECENT FINDINGS: Studies in anesthesiology cite autonomy, control of the work environment, professional relationships, leadership, and organizational justice as the most important factors in job satisfaction. Factors such as difficulty in balancing personal and professional life, poor attention to wellness, work alcoholism, and genetic factors increase an individual's susceptibility to burnout...
June 2018: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29555480/antidepressant-effects-of-magnolol-in-a-mouse-model-of-depression-induced-by-chronic-corticosterone-injection
#19
Yongtao Bai, Lihua Song, Guoliang Dai, Meijuan Xu, Lijing Zhu, Weidong Zhang, Wen Jing, Wenzheng Ju
Evidence showed that the stress hormone corticosterone (CORT) injection resulted in dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis implicated in major depressive disorder. Magnolol, main constituent identified in the barks of Magnolia officinalis, exerted antidepressant effects in a rat model of depression induced by chronic unpredictable mild stress in previous studies. However, its antidepressant-like effects and mechanisms have never been studied in depression model induced by CORT administration in rodents...
July 2018: Steroids
https://www.readbyqxmd.com/read/29550536/salivary-alpha-amylase-and-cortisol-responsiveness-to-stress-in-first-episode-drug-na%C3%A3-ve-patients-with-panic-disorder
#20
Mario Altamura, Salvatore Iuso, Angela Balzotti, Girolamo Francavilla, Andrea Dimitri, Giuseppe Cibelli, Antonello Bellomo, Annamaria Petito
Reported findings on reactivity to stress of the sympathetic-adreno-medullar (SAM) and hypothalamic-pituitary-adrenal (HPA) systems in panic disorder (PD) are very variable. This inconsistency may be explained by differences in treatment exposure, illness duration and emotion regulation strategies. The present study examined the reactivity to mental stress of the SAM and HPA axes in a sample of first episode, drug naïve patients with PD which avoids confounds of medications exposure and illness chronicity...
March 14, 2018: Neuroscience Research
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