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https://www.readbyqxmd.com/read/28089853/region-specific-increases-in-fosb-%C3%AE-fosb-immunoreactivity-in-the-rat-brain-in-response-to-chronic-sleep-restriction
#1
Shannon Hall, Samüel Deurveilher, Kristin Robin Ko, Joan Burns, Kazue Semba
Using a rat model of chronic sleep restriction (CSR) featuring periodic sleep deprivation with slowly rotating wheels (3h on/1h off), we previously observed that 99h of this protocol induced both homeostatic and allostatic (adaptive) changes in physiological and behavioural measures. Notably, the initial changes in sleep intensity and attention performance gradually adapted during CSR despite accumulating sleep loss. To identify brain regions involved in these responses, we used FosB/ΔFosB immunohistochemistry as a marker of chronic neuronal activation...
January 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28080961/interoception-beyond-homeostasis-affect-cognition-and-mental-health
#2
Manos Tsakiris, Hugo Critchley
Interoception refers to the sensing of the internal state of one's body. Interoception is distinct from the processing of sensory information concerning external (non-self) stimuli (e.g. vision, hearing, touch and smell) and is the afferent axis to internal (autonomic and hormonal) physiological control. However, the impact of interoception extends beyond homeostatic/allostatic reflexes: it is proposed to be fundamental to motivation, emotion (affective feelings and behaviours), social cognition and self-awareness...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28069459/stress-coping-style-does-not-determine-social-status-but-influences-the-consequences-of-social-subordination-stress
#3
Gretha J Boersma, Michael D Smeltzer, Karen A Scott, Anton J Scheurink, Kellie L Tamashiro, Randall R Sakai
Chronic stress exposure may have negative consequences for health. One of the most common sources of chronic stress is stress associated with social interaction. In rodents, the effects of social stress can be studied in a naturalistic way using the visual burrow system (VBS). The way an individual copes with stress, their "stress coping style", may influence the consequences of social stress. In the current study we tested the hypothesis that stress coping style may modulate social status and influence the consequences of having a lower social status...
January 6, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28050629/antireward-compulsivity-and-addiction-seminal-contributions-of-dr-athina-markou-to-motivational-dysregulation-in-addiction
#4
REVIEW
George F Koob
RATIONALE AND OBJECTIVES: Addiction is defined as a chronically relapsing disorder characterized by compulsive drug seeking that is hypothesized to derive from multiple sources of motivational dysregulation. METHODS AND RESULTS: Dr. Athina Markou made seminal contributions to our understanding of the neurobiology of addiction with her studies on the dysregulation of reward function using animal models with construct validity. Repeated overstimulation of the reward systems with drugs of abuse decreases reward function, characterized by brain stimulation reward and presumbably reflecting dysphoria-like states...
January 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28045308/everyday-unfair-treatment-and-multisystem-biological-dysregulation-in-african-american-adults
#5
Anthony D Ong, David R Williams, Ujuonu Nwizu, Tara L Gruenewald
OBJECTIVE: Increasing evidence suggests that chronic exposure to unfair treatment or day-to-day discrimination increases risk for poor health, but data on biological stress mechanisms are limited. This study examined chronic experiences of unfair treatment in relation to allostatic load (AL), a multisystem index of biological dysregulation. METHOD: Data are from a sample of 233 African-American adults (37-85 years; 64% women). Perceptions of everyday unfair treatment were measured by questionnaire...
January 2017: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/28041737/potassium-carbonate-as-a-cation-source-for-early-lactation-dairy-cows-fed-high-concentrate-diets
#6
A R Alfonso-Avila, É Charbonneau, P Y Chouinard, G F Tremblay, R Gervais
Previous studies reported that addition of K2CO3 to high-concentrate diets improved milk fat synthesis, although the mechanism is yet to be established. The objective of the current experiment was to investigate the effects of dietary cation-anion difference (DCAD), cation source, and buffering ability of the mineral supplement on rumen biohydrogenation of fatty acids and production performance in dairy cows fed a high-concentrate diet. Thirty-five early-lactation Holstein cows (25 multiparous ruminally fistulated and 10 primiparous nonfistulated) were used in a randomized complete block design (7 blocks) with 33-d periods, including a 5-d pre-treatment collection period used as a covariate...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28027496/allostatic-load-and-reduced-cortical-thickness-in-schizophrenia
#7
Joshua Chiappelli, Peter Kochunov, Anya Savransky, Feven Fisseha, Krista Wisner, Xiaoming Du, Laura M Rowland, L Elliot Hong
Structural imaging studies have consistently found reduced gray matter thickness of the cerebral cortex in schizophrenia, a finding that is evident in first episode psychosis and may be progressive in some cases. Although genetic predisposition and medication effects may contribute to cortical thinning, we hypothesize that the cumulative effects of stress may represent an environmental factor impacting brain morphology in schizophrenia. We examined the relationship between allostatic load, an index of peripheral biomarkers representing the cumulative effects of stress, and cortical thickness...
November 24, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28008558/erratum-to-perceived-weight-discrimination-and-10-year-risk-of-allostatic-load-among-us-adults
#8
Maya Vadiveloo, Josiemer Mattei
No abstract text is available yet for this article.
December 22, 2016: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/27988258/allostatic-load-and-pain-severity-in-older-adults-results-from-the-english-longitudinal-study-of-ageing
#9
Kimberly T Sibille, John McBeth, Diane Smith, Ross Wilkie
Pain is common in older adults, is frequently experienced as stressful, and is associated with increased morbidity and mortality. Stress regulatory systems are adaptive to challenge and change, allostasis, until demands exceed the adaptive capacity contributing to dysregulation, resulting in a high allostatic load. A high allostatic load is associated with increased risk of morbidity and mortality. Pain severity, based on the average intensity of frequent pain, was hypothesized to be positively associated with AL...
December 14, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27979836/longitudinal-study-of-cardiometabolic-risk-from-early-adolescence-to-early-adulthood-in-an-ethnically-diverse-cohort
#10
Seeromanie Harding, Maria João Silva, Oarabile R Molaodi, Zinat E Enayat, Aidan Cassidy, Alexis Karamanos, Ursula M Read, J Kennedy Cruickshank
OBJECTIVE: To examine influences of adiposity from early adolescence to early 20s on cardiovascular disease (CVD) risk in the multiethnic Determinants of young Adult Social well-being and Health (DASH) longitudinal study. METHODS: In 2002-2003, 6643 11-13-year-olds from 51 London schools participated at baseline, and 4785 were seen again at 14-16 years. Recently, 665 (97% of invited) participated in pilot follow-up at 21-23 years, with biological and psychosocial measures and blood biomarkers (only at 21-23 years)...
December 14, 2016: BMJ Open
https://www.readbyqxmd.com/read/27969060/racial-discrimination-predicts-greater-systemic-inflammation-in-pregnant-african-american-women
#11
Carmen Giurgescu, Christopher G Engeland, Thomas N Templin, Shannon N Zenk, Mary Dawn Koenig, Lindsey Garfield
PURPOSE: Chronic exposure to racial discrimination by pregnant African American women may lead to allostatic overload; thereby, predisposing women to systemic inflammation. Thus, the goal of this study was to examine if experiences of racial discrimination are related to systemic inflammation in pregnant African Americans. METHODS: A sample of 96 African American women from Chicago completed questionnaires and had blood drawn during the second trimester of pregnancy (19...
November 2016: Applied Nursing Research: ANR
https://www.readbyqxmd.com/read/27956615/childhood-poverty-and-adult-psychological-well-being
#12
Gary W Evans
Childhood disadvantage has repeatedly been linked to adult physical morbidity and mortality. We show in a prospective, longitudinal design that childhood poverty predicts multimethodological indices of adult (24 y of age) psychological well-being while holding constant similar childhood outcomes assessed at age 9. Adults from low-income families manifest more allostatic load, an index of chronic physiological stress, higher levels of externalizing symptoms (e.g., aggression) but not internalizing symptoms (e...
December 27, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27951526/long-term-health-outcomes-after-exposure-to-repeated-concussion-in-elite-level-rugby-union-players
#13
T M McMillan, P McSkimming, J Wainman-Lefley, L M Maclean, J Hay, A McConnachie, W Stewart
BACKGROUND: There is continuing concern about effects of concussion in athletes, including risk of the neurodegenerative disease chronic traumatic encephalopathy. However, information on long-term health and wellbeing in former athletes is limited. METHOD: Outcome after exposure to repeated brain injury was investigated in 52 retired male Scottish international rugby players (RIRP) and 29 male controls who were similar in age and social deprivation. Assessment included history of playing rugby and traumatic brain injury, general and mental health, life stress, concussion symptoms, cognitive function, disability and markers of chronic stress (allostatic load)...
October 7, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27933366/deficits-in-autonomic-indices-of-emotion-regulation-and-reward-processing-associated-with-prescription-opioid-use-and-misuse
#14
Eric L Garland, Craig J Bryan, Yoshio Nakamura, Brett Froeliger, Matthew O Howard
RATIONALE: Prescription opioid misuse and high-dose opioid use may result in allostatic dysregulation of hedonic brain circuitry, leading to reduced emotion regulation capacity. In particular, opioid misuse may blunt the ability to experience and upregulate positive affect from natural rewards. OBJECTIVES: The purpose of this study was to examine associations between opioid use/misuse and autonomic indices of emotion regulation capability in a sample of chronic pain patients receiving prescription opioid pharmacotherapy...
December 8, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27933289/the-association-between-stress-measured-by-allostatic-load-score-and-physiologic-dysregulation-in-african-immigrants-the-africans-in-america-study
#15
Brianna A Bingham, Michelle T Duong, Madia Ricks, Lilian S Mabundo, Rafeal L Baker, Jean N Utumatwishima, Margaret Udahogora, David Berrigan, Anne E Sumner
INTRODUCTION: Allostatic load score (ALS) summarizes the physiological effect of stress on cardiovascular, metabolic and immune systems. As immigration is stressful, ALS could be affected. OBJECTIVE: Associations between age of immigration, reason for immigration, and unhealthy assimilation behavior and ALS were determined in 238 African immigrants to the United States (age 40 ± 10, mean ± SD, range 21-64 years). METHODS: ALS was calculated using 10 variables from three domains; cardiovascular (SBP, DBP, cholesterol, triglyceride, homocysteine), metabolic [BMI, A1C, albumin, estimated glomerular filtration rate (eGFR)], and immunological [high-sensitivity C-reactive protein (hsCRP)]...
2016: Frontiers in Public Health
https://www.readbyqxmd.com/read/27901290/early-life-trauma-post-traumatic-stress-disorder-and-allostatic-load-in-a-sample-of-american-indian-adults
#16
Zaneta Thayer, Celestina Barbosa-Leiker, Michael McDonell, Lonnie Nelson, Dedra Buchwald, Spero Manson
OBJECTIVES: Among American Indians, prior research has found associations between early life trauma and the development of post-traumatic stress disorder (PTSD) in adulthood. Given the physiological changes associated with PTSD, early life trauma could indirectly contribute to chronic disease risk. However, the impact of early life trauma on adult physical health in this population has not been previously investigated. METHODS: We evaluated associations among early life trauma, PTSD, and 13 physiological biomarkers that index cardiovascular, metabolic, neuroendocrine, anthropometric, and immune function in adulthood by conducting correlation and structural equation modeling path analyses (N = 197)...
November 30, 2016: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/27895566/allostatic-self-efficacy-a-metacognitive-theory-of-dyshomeostasis-induced-fatigue-and-depression
#17
Klaas E Stephan, Zina M Manjaly, Christoph D Mathys, Lilian A E Weber, Saee Paliwal, Tim Gard, Marc Tittgemeyer, Stephen M Fleming, Helene Haker, Anil K Seth, Frederike H Petzschner
This paper outlines a hierarchical Bayesian framework for interoception, homeostatic/allostatic control, and meta-cognition that connects fatigue and depression to the experience of chronic dyshomeostasis. Specifically, viewing interoception as the inversion of a generative model of viscerosensory inputs allows for a formal definition of dyshomeostasis (as chronically enhanced surprise about bodily signals, or, equivalently, low evidence for the brain's model of bodily states) and allostasis (as a change in prior beliefs or predictions which define setpoints for homeostatic reflex arcs)...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27891602/cannabimimetic-phytochemicals-in-the-diet-an-evolutionary-link-to-food-selection-and-metabolic-stress-adaptation
#18
REVIEW
Jürg Gertsch
The endocannabinoid system (ECS) is a major lipid signalling network that plays important pro-homeostatic (allostatic) roles not only in the nervous system but also in peripheral organs. There is increasing evidence that there is a dietary component in the modulation of the ECS. Cannabinoid receptors in hominids co-evolved with diet, and the ECS constitutes a feedback loop for food selection and energy metabolism. Here, it is postulated that the mismatch of ancient lipid genes of hunter-gatherers and pastoralists with the high-carbohydrate diet introduced by agriculture could be compensated for via dietary modulation of the ECS...
November 27, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27888772/adrenocortical-sensitivity-moderated-by-ongoing-stress-predicts-drinking-intensity-in-alcohol-dependent-men
#19
Bryon Adinoff, David Leonard, Julianne Price, Martin A Javors, Robrina Walker, E Sherwood Brown, Hong Xiao, Uma Rao
Allostatic load from both environmental stressors and persistent glucocorticoid secretion has been associated with disease severity in alcohol dependence. Heightened relapse risk and/or drinking severity, in particular, may be a reaction to alcohol- and withdrawal-induced changes in physiological stress response systems coupled with ongoing life stress, although their shared contributions upon drinking severity have not been assessed. To investigate the combined contribution of hypothalamic-pituitary-adrenal (HPA) reactivity and environmental stressors (e...
November 5, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27884006/current-psychosomatic-practice
#20
Giovanni A Fava, Fiammetta Cosci, Nicoletta Sonino
Psychosomatic research has advanced over the past decades in dealing with complex biopsychosocial phenomena and may provide new effective modalities of patient care. Among psychosocial variables affecting individual vulnerability, course, and outcome of any medical disease, the role of chronic stress (allostatic load/overload) has emerged as a crucial factor. Assessment strategies include the Diagnostic Criteria for Psychosomatic Research. They are presented here in an updated version based on insights derived from studies carried out so far and encompass allostatic overload, type A behavior, alexithymia, the spectrum of maladaptive illness behavior, demoralization, irritable mood, and somatic symptoms secondary to a psychiatric disorder...
2017: Psychotherapy and Psychosomatics
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