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https://www.readbyqxmd.com/read/29475055/toxic-stress-history-and-hypothalamic-pituitary-adrenal-axis-function-in-a-social-stress-task-genetic-and-epigenetic-factors
#1
Hannah E Lapp, Sarah Ahmed, Celia L Moore, Richard G Hunter
Histories of early life stress (ELS) or social discrimination can reach levels of severity characterized as toxic to mental and physical health. Such toxic social stress during development has been linked to altered acute hypothalamic-pituitary-adrenal (HPA) response to social stress in adulthood. However, there are important individual differences in the size and direction of these effects. We explored developmental, genetic, epigenetic, and contextual sources of individual differences in the relationship between ELS, discrimination, and adult responses to acute social stress in a standard laboratory test...
February 21, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29475018/kynurenine-pathway-metabolism-and-the-neurobiology-of-treatment-resistant-depression-comparison-of-multiple-ketamine-infusions-and-electroconvulsive-therapy
#2
A P Allen, M Naughton, J Dowling, A Walsh, R O'Shea, G Shorten, L Scott, D M McLoughlin, J F Cryan, G Clarke, T G Dinan
Current first-line antidepressants can take weeks or months to decrease depressive symptoms. Low dose ketamine, an N-methyl-D-aspartate (NMDA) receptor antagonist, shows potential for a more rapid antidepressant effect, with efficacy also evident in previously treatment-resistant populations. However, a greater understanding of the physiological mechanisms underlying such effects is required. We assessed the potential impact of ketamine infusion on neurobiological drivers of kynurenine pathway metabolism in major depression (HPA axis hyperactivity, inflammation) in patients with treatment-resistant depression compared to gender-matched healthy controls...
February 10, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29473646/research-review-intergenerational-transmission-of-disadvantage-epigenetics-and-parents-childhoods-as-the-first-exposure
#3
Pamela Scorza, Cristiane S Duarte, Alison E Hipwell, Jonathan Posner, Ana Ortin, Glorisa Canino, Catherine Monk
BACKGROUND: For decades, economists and sociologists have documented intergenerational transmission of socioeconomic disadvantage, demonstrating that economic, political, and social factors contribute to 'inherited hardship'. Drawing on biological factors, the developmental origins of adult health and disease model posits that fetal exposure to maternal prenatal distress associated with socioeconomic disadvantage compromises offspring's neurodevelopment, affecting short- and long-term physical and mental health, and thereby psychosocial standing and resources...
February 23, 2018: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29473427/glucocorticoid-sensitivity-and-inflammatory-status-of-peripheral-blood-mononuclear-cells-in-patients-with-coronary-artery-disease
#4
Simon Jönsson, Anna K Lundberg, Rosanna W S Chung, Lena Jonasson
OBJECTIVE: Mechanisms behind sustained inflammation in patients with coronary artery disease (CAD) are not clarified but hypothalamus-pituitary-adrenal (HPA) axis dysfunction may have a role. Here, we investigated whether inflammatory status of peripheral blood mononuclear cells (PBMCs) was associated with altered glucocorticoid sensitivity in CAD patients. METHODS: In 55 CAD patients and 30 controls, mRNA levels of GR-α, GR-β, NF-κB, IκBα, MMP-9, and TIMP-1 were measured in PBMCs...
February 23, 2018: Annals of Medicine
https://www.readbyqxmd.com/read/29471911/the-neuro-endocrine-immune-relationship-in-pulmonary-and-pleural-tuberculosis-a-better-local-profile-in-pleural-fluid
#5
L D'Attilio, A Díaz, R D V Fernández, B Bongiovanni, N Santucci, G Dídoli, S Lioi, W Gardeñez, J L Naninni, A Del Rey, H Besedovsky, O Bottasso, M L Bay
BACKGROUND: Tuberculosis (TB) is a major health problem worldwide. In TB, the immune and central nervous systems modulate each other. The two main components of this network are the hypothalamic-pituitary-adrenal axis (HPA) and autonomic nervous system (ANS). OBJECTIVE: To elucidate neuro-endocrine-immune (NEI) interactions in pulmonary (PTB) or pleural (PLTB) TB, we analysed the relationship among compounds from these systems. METHODS: We quantified levels of catecholamines, hormones and cytokines in plasma from patients with PTB (n = 46) or PLTB (n = 12) and controls (n = 32), and in the pleural fluid from PLTB patients...
March 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29468477/ethanol-extract-of-rehmannia-glutinosa-exerts-antidepressant-like-effects-on-a-rat-chronic-unpredictable-mild-stress-model-by-involving-monoamines-and-bdnf
#6
Jun-Ming Wang, Li-Xin Pei, Yue-Yue Zhang, Yong-Xian Cheng, Chun-Ling Niu, Ying Cui, Wei-Sheng Feng, Gui-Fang Wang
The dried roots of Rehmannia glutinosa Libosch. (Scrophulariaceae) are of both medicinal and nutritional importance. Our previous study has found that the 80% ethanol extract of R. glutinosa (RGEE) produced antidepressant-like activities in mouse behavioral despair depression models. However, its mechanisms are still unclear. The present study aimed to observe the antidepressant-like mechanisms of RGEE on a rat chronic unpredictable mild stress (CUMS) model by involving monoaminergic neurotransmitters and brain-derived neurotrophic factor (BDNF)...
February 22, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29464752/voluntary-wheel-running-attenuates-urinary-bladder-hypersensitivity-and-dysfunction-following-neonatal-maternal-separation-in-female-mice
#7
Angela N Pierce, Olivia C Eller-Smith, Julie A Christianson
AIMS: Patients with interstitial cystitis/painful bladder syndrome (IC/PBS) commonly suffer from widespread pain and mood disorder, which has been attributed to improper functioning of the hypothalamic-pituitary-adrenal (HPA) axis. Voluntary exercise has been shown to improve HPA axis function, therefore we are determining whether voluntary wheel running can attenuate urological pain and dysfunction following neonatal maternal separation (NMS) in female mice. METHODS: Mice underwent NMS for 3 h/day from postnatal Day 1-21, were caged with free access to running wheels at 4 weeks of age, and assessed 4 weeks later for bladder sensitivity, micturition, reward behavior, mast cell degranulation, and HPA axis-related in vitro analysis...
February 21, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29462703/lifelong-aerobic-exercise-reduces-the-stress-response-in-rats
#8
A Pietrelli, M Di Nardo, A Masucci, A Brusco, N Basso, L Matkovic
The aim of this study was to analyze the effects of lifelong aerobic exercise (AE) on the adaptive response of the stress system in rats. It is well known that hypothalamic-pituitary-adrenal axis (HPA) activity differs when triggered by voluntary or forced exercise models. Male Wistar rats belonging to exercise (E) or control (C) groups were subjected to chronic AE, and two cutoff points were established at 8 (middle age) and 18 months (old age) of age. Behavioral, biochemical and histopathological studies were performed on the main components/targets of the stress system...
February 17, 2018: Neuroscience
https://www.readbyqxmd.com/read/29454288/apocynum-venetum-leaf-extract-reverses-depressive-like-behaviors-in-chronically-stressed-rats-by-inhibiting-oxidative-stress-and-apoptosis
#9
Xiangting Li, Ting Wu, Zhonghai Yu, Tingting Li, Jingsi Zhang, Zhennian Zhang, Min Cai, Wen Zhang, Jun Xiang, Dingfang Cai
BACKGROUND: Major depressive disorder (MDD) is a common but serious psychiatric disorder, but current treatments are inadequate for approximately half of the patients with MDD. Thus, better methods of treatment are urgently needed. This study aimed to investigate the antidepressant-like effects and potential mechanism of Apocynum venetum leaf extract (AVLE) in chronic unpredictable mild stress (CUMS) rat model of depression. MATERIALS AND METHODS: The CUMS rat model of depression was used to investigate the antidepressant-like activity and relevant mechanism of AVLE (30, 60, and 125 mg/kg, i...
February 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29453925/impact-of-opioid-therapy-on-gonadal-hormones-focus-on-buprenorphine
#10
REVIEW
Anjali Varma, Mamta Sapra, Ali Iranmanesh
Objective The USA is in the midst of an opioid crisis. Understanding the impact of opioids and commonly used treatments for opioid dependence is essential for clinicians and researchers in order to educate and treat the nation's growing population with opioid use disorders. As a relatively new treatment for opioid dependence, buprenorphine is gaining popularity to the extent of becoming not only a preferred approach to the maintenance of opiate addiction, but also an option for chronic pain management. The purpose of this report is to review the available evidence on the endocrine effects of buprenorphine, particularly as it relates to the hypothalamic-pituitary-gonadal (HPG) axis, which is controversial and not fully defined...
February 17, 2018: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/29453413/depression-and-obesity-evidence-of-shared-biological-mechanisms
#11
REVIEW
Yuri Milaneschi, W Kyle Simmons, Elisabeth F C van Rossum, Brenda Wjh Penninx
Depression and obesity are common conditions with major public health implications that tend to co-occur within individuals. The relationship between these conditions is bidirectional: the presence of one increases the risk for developing the other. It has thus become crucial to gain a better understanding of the mechanisms responsible for the intertwined downward physiological spirals associated with both conditions. The present review focuses specifically on shared biological pathways that may mechanistically explain the depression-obesity link, including genetics, alterations in systems involved in homeostatic adjustments (HPA axis, immuno-inflammatory activation, neuroendocrine regulators of energy metabolism including leptin and insulin, and microbiome) and brain circuitries integrating homeostatic and mood regulatory responses...
February 16, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29452193/antidepressant-activity-of-vorinostat-is-associated-with-amelioration-of-oxidative-stress-and-inflammation-in-a-corticosterone-induced-chronic-stress-model-in-mice
#12
Athira Kv, Rajaram Mohanrao Madhana, Indu Chandran Js, Mangala Lahkar, Swapnil Sinha, V G M Naidu
Major depressive disorder (MDD) is a multifactorial neuropsychiatric disorder. Chronic administration of corticosterone (CORT) to rodents is used to mimic the stress associated dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, a well-established feature found in depressive patients. Recently, preclinical studies have demonstrated the antidepressant potential of histone deacetylase (HDAC) inhibitors. So, we examined the antidepressant potential of vorinostat (VOR), a HDAC inhibitor against CORT injections in male mice...
February 13, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29452075/physiological-correlates-of-reproductive-decisions-relationships-among-body-condition-reproductive-status-and-the-hypothalamus-pituitary-adrenal-axis-in-a-reptile
#13
Catherine A Dayger, Michael P LeMaster, Deborah I Lutterschmidt
When opportunities to feed and reproduce are limited, females are often unable to recover sufficient energy stores to reproduce in consecutive years. Body condition has been used as a proxy for recent reproductive history in such species. We previously found that glucocorticoid responses to capture stress vary with body condition in female red-sided garter snakes (Thamnophis sirtalis parietalis), a species with limited seasonal breeding opportunities. Because variation in glucocorticoid receptor (GR) protein in the brain could explain these differences, we first assessed GR protein content in females in different body conditions...
February 13, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29450650/access-to-the-cns-biomarker-strategies-for-dopaminergic-treatments
#14
REVIEW
Willem Johan van den Brink, Semra Palic, Isabelle Köhler, Elizabeth Cunera Maria de Lange
Despite substantial research carried out over the last decades, it remains difficult to understand the wide range of pharmacological effects of dopaminergic agents. The dopaminergic system is involved in several neurological disorders, such as Parkinson's disease and schizophrenia. This complex system features multiple pathways implicated in emotion and cognition, psychomotor functions and endocrine control through activation of G protein-coupled dopamine receptors. This review focuses on the system-wide effects of dopaminergic agents on the multiple biochemical and endocrine pathways, in particular the biomarkers (i...
February 15, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29449045/how-to-measure-glucocorticoid-receptor-s-sensitivity-in-patients-with-stress-related-psychiatric-disorders
#15
REVIEW
Carolin Leistner, Andreas Menke
Stress is a state of derailed homeostasis and a main environmental risk factor for psychiatric diseases. Chronic or uncontrollable stress may lead to a dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, which is a common feature of stress-related psychiatric disorders. One of the key mechanisms underlying a disturbed HPA axis is an impaired function of the glucocorticoid receptor (GR) with an enhanced or reduced feedback sensitivity for glucocorticoids and subsequently altered concentrations of peripheral cortisol...
February 2, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29446123/associations-between-csf-cortisol-and-csf-norepinephrine-in-cognitively-normal-controls-and-patients-with-amnestic-mci-and-ad-dementia
#16
Lucy Y Wang, Murray A Raskind, Charles W Wilkinson, Jane B Shofer, Carl Sikkema, Patricia Szot, Joseph F Quinn, Douglas R Galasko, Elaine R Peskind
OBJECTIVE: This study evaluated the effects of Alzheimer disease (AD) on the relationship between the brain noradrenergic system and hypothalamic pituitary adrenocortical axis (HPA). Specifically, relationships between cerebrospinal fluid (CSF) norepinephrine (NE) and CSF cortisol were examined in cognitively normal participants and participants with AD dementia and amnestic mild cognitive impairment (aMCI). We hypothesized that there would a positive association between these 2 measures in cognitively normal controls and that this association would be altered in AD...
February 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29444258/modeling-the-influence-of-seasonal-differences-in-the-hpa-axis-on-synchronization-of-the-circadian-clock-and-cell-cycle
#17
Kamau Pierre, Rohit T Rao, Clara Hartmanshenn, Ioannis P Androulakis
Synchronization of biological functions to environmental signals enables organisms to anticipate and appropriately respond to daily external fluctuations and is critical to the maintenance of homeostasis. Misalignment of circadian rhythms with environmental cues is associated with adverse health outcomes. Cortisol, the downstream effector of hypothalamic-pituitary-adrenal (HPA) activity, facilitates synchronization of peripheral biological processes to the environment. Cortisol levels exhibit substantial seasonal rhythmicity, with peak levels occurring during the short-photoperiod winter months and reduced levels occurring in the long-photoperiod summer season...
February 12, 2018: Endocrinology
https://www.readbyqxmd.com/read/29441975/novel-insights-into-the-pharmacological-effects-of-resveratrol-on-the-management-of-depression-a-short-review
#18
Y Y Xu, J Liang, Q R Xia
Recently, it was suggested that resveratrol (RES), a natural polyphenol, possesses beneficial therapeutic roles in depression. The aim of this review is to discuss the novel potential pharmacological effects of RES on depression. We first consider the pathophysiology of depression and then review the potential antidepressant effects of RES. Apart from the alternation of the monoaminergic system and the molecular markers related to depression, RES might exert an antidepressant-like effect through modulating the HPA axis, BDNF and synaptic vesicle proteins, inflammatory cytokines and oxidative stress, and thyroid hormones...
September 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29436637/nicotinamide-phosphoribosyltransferase-and-the-hypothalamic-pituitary-adrenal-axis-of-the-rat
#19
Piotr Celichowski, Karol Jopek, Paulina Milecka, Marta Szyszka, Marianna Tyczewska, Ludwik K Malendowicz, Marcin Ruciński
Nicotinamide phosphoribosyltransferase (Nampt), also termed visfatin, catalyses the rate‑limiting step in the nicotinamide adenine dinucleotide (NAD) salvage pathway. In addition to its intracellular function (iNampt), extracellular Nampt (eNampt) also affects numerous intracellular signalling pathways. The current study investigated the role of Nampt in the regulation of the hypothalamic‑pituitary‑adrenal (HPA) axis in rats. At 1 h after intraperitoneal administration of eNampt (4 µg/100 g) in adult male rats, serum adrenocorticotropic hormone(ACTH) and aldosterone levels remained unchanged, while corticosterone levels were notably elevated compared with the control group, as determined by ELISA...
February 7, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29434541/the-influence-of-early-life-experience-on-visceral-pain
#20
REVIEW
Isabella M Fuentes, Julie A Christianson
Pain is the most reported and troublesome symptom of nearly all functional disorders affecting the genitourinary and gastrointestinal organs. Patients with irritable bowel syndrome (IBS), interstitial cystitis/painful bladder syndrome (IC/PBS), vulvodynia, and/or chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS; collectively termed chronic pelvic pain syndromes) report pain severe enough to impact quality of life and often suffer from symptoms of or are diagnosed with more than one of these syndromes...
2018: Frontiers in Systems Neuroscience
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