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https://www.readbyqxmd.com/read/29779126/animal-models-of-chronic-migraine
#1
REVIEW
Tse-Ming Chou, Shih-Pin Chen
PURPOSE OF REVIEW: Chronic migraine (CM) is a recalcitrant subtype of migraine which causes high degrees of disability, poor treatment responses, and frequent recurrences in sufferers. However, the pathophysiological mechanisms underlying the development and chronification of migraine attacks remain incompletely understood. A validated animal model could help to decipher the pathogenic mechanism of the disease, facilitating the development of possible therapeutic strategies for CM. In this review, we aimed to summarize current animal models of CM and discuss the validity of these models...
May 19, 2018: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/29775876/childhood-abuse-and-depression-in-adulthood-the-mediating-role-of-allostatic-load
#2
Sandra Scheuer, Nicole Wiggert, Tanja Maria Brückl, Yvonne Awaloff, Manfred Uhr, Susanne Lucae, Stefan Kloiber, Florian Holsboer, Marcus Ising, Frank H Wilhelm
BACKGROUND: Traumatic experiences during childhood are considered a major risk factor for depression in adulthood. Childhood trauma may induce physiological dysregulation with long-term effects of increased allostatic load until adulthood, which may lead to depression. Thus, our aim was to investigate whether allostatic load - which represents a multi-system measure of physiological dysregulation - mediates the association between childhood trauma and adult depression. METHODS: The study sample consisted of 324 depressed inpatients participating in the Munich Antidepressant Response Signature (MARS) project and 261 mentally healthy control participants...
April 22, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29775832/stressed-out-an-investigation-of-whether-allostatic-load-mediates-associations-between-neighbourhood-deprivation-and-health
#3
Lucy Prior, David Manley, Kelvyn Jones
Deprived neighbourhoods have long been associated with poorer health outcomes. However, many quantitative studies have not evidenced the mechanisms through which place 'gets under the skin' to influence health. The increasing prevalence of biosocial data provides new opportunities to explore these mechanisms and incorporate them into models of contextual effects. The stress pathway is a key biosocial mechanism; however, few studies have explicitly tested it in neighbourhood associations. This paper addresses this gap by investigating whether allostatic load, a biological response to chronic stress, mediates relationships of neighbourhood deprivation to physical and mental health...
May 15, 2018: Health & Place
https://www.readbyqxmd.com/read/29773951/the-role-of-neuroinflammation-and-neurovascular-dysfunction-in-major-depressive-disorder
#4
REVIEW
Sang Won Jeon, Yong-Ku Kim
Although depression has generally been explained with monoamine theory, it is far more multifactorial, and therapies that address the disease's pathway have not been developed. In this context, an understanding of neuroinflammation and neurovascular dysfunction would enable a more comprehensive approach to depression. Inflammation is in a sense a type of allostatic load involving the immune, endocrine, and nervous systems. Neuroinflammation is involved in the pathophysiology of depression by increasing proinflammatory cytokines, activating the hypothalamus-pituitary-adrenal axis, increasing glucocorticoid resistance, and affecting serotonin synthesis and metabolism, neuronal apoptosis and neurogenesis, and neuroplasticity...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29768636/water-related-mechanisms-proposed-for-storing-and-transmitting-homeopathic-information-putative-links-with-biological-responses
#5
José Roberto Pereira Guedes, Leoni Villano Bonamin, Vera Luiza Capelozzi
INTRODUCTION:  There are two critical pillars of homeopathy that contrast with the dominant scientific approach: the similitude principle and the potentization of serial dilutions. Three main hypotheses about the mechanisms of action are in discussion: nanobubbles-related hormesis; vehicle-related electric resonance; and quantum non-locality. OBJECTIVES:  The aim of this paper is to review and discuss some key points of such properties: the imprint of supramolecular structures based on the nanoparticle-allostatic, cross-adaptation-sensitization (NPCAS) model; the theory of non-molecular electromagnetic transfer of information, based on the coherent water domains model, and relying (like the NPCAS model) on the idea of local interactions; and the hypothesis of quantum entanglement, based on the concept of non-locality...
May 16, 2018: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/29762862/stress-and-the-psyche-brain-immune-network-in-psychiatric-diseases-based-on-psychoneuroendocrineimmunology-a-concise-review
#6
REVIEW
Anna Giulia Bottaccioli, Francesco Bottaccioli, Andrea Minelli
In the last decades, psychoneuroendocrineimmunology research has made relevant contributions to the fields of neuroscience, psychobiology, epigenetics, molecular biology, and clinical research by studying the effect of stress on human health and highlighting the close interrelations between psyche, brain, and bodily systems. It is now well recognized that chronic stress can alter the physiological cross-talk between brain and biological systems, leading to long-lasting maladaptive effects (allostatic overload) on the nervous, immune, endocrine, and metabolic systems, which compromises stress resiliency and health...
May 15, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29748232/an-allostatic-mechanism-for-m2-pyruvate-kinase-as-an-amino-acid-sensor
#7
Meng Yuan, Iain W McNae, Yiyuan Chen, Elizabeth A Blackburn, Martin A Wear, Paul A M Michels, Linda A Fothergill-Gilmore, Ted Hupp, Malcolm D Walkinshaw
We have tested the effect of all 20 proteinogenic amino acids on the activity of the M2 isoenzyme of pyruvate kinase (M2PYK) and show that within physiologically relevant concentrations, phenylalanine, alanine, tryptophan, methionine, valine, and proline act as inhibitors while histidine and serine act as activators. Size exclusion chromatography has been used to show that all amino acids, whether activators or inhibitors, stabilise the tetrameric form of M2PYK. In the absence of amino-acid ligands an apparent tetramer-monomer dissociation K d is estimated to be ~0...
May 10, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29746855/the-first-multi-zoo-application-of-an-allostatic-load-index-to-western-lowland-gorillas-gorilla-gorilla-gorilla
#8
Ashley N Edes, Barbara A Wolfe, Douglas E Crews
Vertebrate stress responses are highly adaptive biological functions, maximizing survival probability in life-threatening situations. However, experiencing repeated and/or chronic stressors can generate physiological dysregulation and lead to disease. Because stress responses are multi-systemic and involve a wide range of physiological functions, identifying responses to stressors is best accomplished using integrated biomarker models. Allostatic load, defined as the physiological dysregulation that accumulates over the lifespan due to stressful experiences, is one such model...
May 7, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29741415/using-allostatic-load-to-validate-self-rated-health-for-racial-ethnic-groups-in-the-united-states
#9
Alexis R Santos-Lozada, Jeffrey T Howard
This study evaluates the validity of subjective health measurement for racial/ethnic comparisons in the United States, by assessing whether allostatic load (AL) is equally associated with poor/fair self-rated health (SRH) for different racial/ethnic groups. This study used data from the National Health and Nutrition Survey (NHANES) for 2006-2010. Multivariable logistic regression models were fit and stratified by race/ethnicity to study the association between AL and poor/fair SRH. Higher levels of AL were associated with higher odds of reporting poor/fair SRH...
January 2018: Biodemography and Social Biology
https://www.readbyqxmd.com/read/29724735/chronic-stress-protection-for-postnatal-depression-prevention-serene-a-protocol-for-an-exploratory-study
#10
Dahlia Tharwat, Marion Trousselard, Mélanie Balès, Anne-Laure Sutter-Dallay, Dominique Fromage, Elisabeth Spitz, Dominique Dallay, Thierry Harvey, Eric Welter, Frédéric Coatleven, Lydie Cherier, Frédérique Teissèdre, Jean-Luc Pouly, Frédéric Dutheil, Anaïs M Duffaud
INTRODUCTION: The prevalence of postnatal depression (PND) is significant: reaching up to 20% in the general population. In mechanistic terms, the risk of PND lies in an interaction between a maternal psychophysiological vulnerability and a chronic environmental context of stress. On the one hand, repetition of stressor during pregnancy mimics a chronic stress model that is relevant to the study of the allostatic load and the adaptive mechanisms. On the other hand, vulnerability factors reflect a psychological profile mirroring mindfulness functioning (psychological quality that involves bringing one's complete and non-judgemental attention to the present experience on a moment-to-moment basis)...
May 3, 2018: BMJ Open
https://www.readbyqxmd.com/read/29709774/allostatic-load-a-theoretical-model-for-understanding-the-relationship-between-maternal-posttraumatic-stress-disorder-and-adverse-birth-outcomes
#11
Li Yang, Marie-Anne Sanon Rosemberg, Julia S Seng
BACKGROUND: Adverse birth outcomes such as preterm birth and low birth weight are significant public health concerns and contribute to neonatal morbidity and mortality. Studies have increasingly been exploring the predictive effects of maternal posttraumatic stress disorder (PTSD) on adverse birth outcomes. However, the biological mechanisms by which maternal PTSD affects birth outcomes are not well understood. Allostatic load refers to the cumulative dysregulations of the multiple physiological systems as a response to multiple social-ecological levels of chronic stress...
April 10, 2018: Midwifery
https://www.readbyqxmd.com/read/29686319/allostatic-load-as-a-predictor-of-grey-matter-volume-and-white-matter-integrity-in-old-age-the-whitehall-ii-mri-study
#12
Enikő Zsoldos, Nicola Filippini, Abda Mahmood, Clare E Mackay, Archana Singh-Manoux, Mika Kivimäki, Mark Jenkinson, Klaus P Ebmeier
The allostatic load index quantifies the cumulative multisystem physiological response to chronic everyday stress, and includes cardiovascular, metabolic and inflammatory measures. Despite its central role in the stress response, research of the effect of allostatic load on the ageing brain has been limited. We investigated the relation of mid-life allostatic load index and multifactorial predictors of stroke (Framingham stroke risk) and diabetes (metabolic syndrome) with voxelwise structural grey and white matter brain integrity measures in the ageing Whitehall II cohort (N = 349, mean age = 69...
April 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29685651/stress-and-health-behaviors-as-potential-mediators-of-the-relationship-between-neighborhood-quality-and-allostatic-load
#13
Robert N Buschmann, John D Prochaska, Malcolm P Cutchin, M Kristen Peek
PURPOSE: Neighborhood quality is associated with health. Increasingly, researchers are focusing on the mechanisms underlying that association, including the role of stress, risky health behaviors, and subclinical measures such as allostatic load (AL). METHODS: This study uses mixed-effects regression modeling to examine the association between two objective measures and one subjective measure of neighborhood quality and AL in an ethnically diverse population-based sample (N = 2706) from a medium-sized Texas city...
March 29, 2018: Annals of Epidemiology
https://www.readbyqxmd.com/read/29672605/concentration-related-metabolic-rate-and-behavioral-thermoregulatory-adaptations-to-serial-administrations-of-nitrous-oxide-in-rats
#14
Karl J Kaiyala, Douglas S Ramsay
BACKGROUND: Initial administration of ≥60% nitrous oxide (N2O) to rats evokes hypothermia, but after repeated administrations the gas instead evokes hyperthermia. This sign reversal is driven mainly by increased heat production. To determine whether rats will behaviorally oppose or assist the development of hyperthermia, we previously performed thermal gradient testing. Inhalation of N2O at ≥60% causes rats to select cooler ambient temperatures both during initial administrations and during subsequent administrations in which the hyperthermic state exists...
2018: PloS One
https://www.readbyqxmd.com/read/29665419/widespread-associations-between-trait-conscientiousness-and-thickness-of-brain-cortical-regions
#15
Gary J Lewis, David Alexander Dickie, Simon R Cox, Sherif Karama, Alan C Evans, John M Starr, Mark E Bastin, Joanna M Wardlaw, Ian J Deary
The neural correlates of human personality have been of longstanding interest; however, most studies in the field have relied on modest sample sizes and few replicable results have been reported to date. We investigated relationships between personality and brain gray matter in a sample of generally healthy, older (mean age 73 years) adults from Scotland drawn from the Lothian Birth Cohort 1936. Participants (N = 578) completed a brain MRI scan and self-reported Big Five personality trait measures. Conscientiousness trait scores were positively related to brain cortical thickness in a range of regions, including bilateral parahippocampal gyrus, bilateral fusiform gyrus, left cingulate gyrus, right medial orbitofrontal cortex, and left dorsomedial prefrontal cortex...
April 14, 2018: NeuroImage
https://www.readbyqxmd.com/read/29618742/early-life-stress-induces-long-term-changes-in-limbic-areas-of-a-teleost-fish-the-role-of-catecholamine-systems-in-stress-coping
#16
Marco A Vindas, Stefanos Fokos, Michail Pavlidis, Erik Höglund, Sylvia Dionysopoulou, Lars O E Ebbesson, Nikolaos Papandroulakis, Catherine R Dermon
Early life stress (ELS) shapes the way individuals cope with future situations. Animals use cognitive flexibility to cope with their ever-changing environment and this is mainly processed in forebrain areas. We investigated the performance of juvenile gilthead seabream, previously subjected to an ELS regime. ELS fish showed overall higher brain catecholaminergic (CA) signalling and lower brain derived neurotrophic factor (bdnf) and higher cfos expression in region-specific areas. All fish showed a normal cortisol and serotonergic response to acute stress...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29609076/negative-fateful-life-events-in-midlife-and-advanced-predicted-brain-aging
#17
Sean N Hatton, Carol E Franz, Jeremy A Elman, Matthew S Panizzon, Donald J Hagler, Christine Fennema-Notestine, Lisa T Eyler, Linda K McEvoy, Michael J Lyons, Anders M Dale, William S Kremen
Negative fateful life events (FLEs) such as interpersonal conflict, death in the family, financial hardship, and serious medical emergencies can act as allostatic stressors that accelerate biological aging. However, the relationship between FLEs and neuroanatomical aging is not well understood. We examined 359 men (mean age 62 years) participating in the Vietnam Era twin study of aging (VETSA) to determine whether negative midlife FLEs are associated with advanced brain aging after controlling for physical, psychological, and lifestyle factors...
March 8, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29601274/revisiting-the-safe-place-method-and-regulatory-aspects-in-psychotherapy-when-easing-allostatic-overload-in-traumatized-patients
#18
Anna Gerge
Safe-place inductions are considered important altered states of consciousness (ASC) to be (re)installed during trauma-informed psychotherapy. Coregulation aimed at changing implicit relational knowing and increasing integration and coherence through relational work and hypnotic techniques is crucial, as clients' abilities to self-soothe and regulate have become seriously impaired. Thus, resource-oriented metaphors as inner strength imagery is advocated. Also, methods such as creative-arts therapy and neurofeedback will induce ASCs, as most methods used with complex traumatized clients, due to their high hypnotizability...
April 2018: International Journal of Clinical and Experimental Hypnosis
https://www.readbyqxmd.com/read/29559024/early-adversity-and-internalizing-symptoms-in-adolescence-mediation-by-individual-differences-in-latent-trait-cortisol
#19
Catherine B Stroud, Frances R Chen, Leah D Doane, Douglas A Granger
Research suggests that early adversity places individuals at risk for psychopathology across the life span. Guided by concepts of allostasis and allostatic load, the present study examined whether early adversity contributes to the development of subsequent internalizing symptoms through its association with traitlike individual differences in hypothalamic-pituitary-adrenal axis regulation. Early adolescent girls (n = 113; M age = 12.30 years) provided saliva samples at waking, 30 min postwaking, and bedtime over 3 days (later assayed for cortisol)...
March 21, 2018: Development and Psychopathology
https://www.readbyqxmd.com/read/29551356/more-than-a-feeling-a-unified-view-of-stress-measurement-for-population-science
#20
REVIEW
Elissa S Epel, Alexandra D Crosswell, Stefanie E Mayer, Aric A Prather, George M Slavich, Eli Puterman, Wendy Berry Mendes
Stress can influence health throughout the lifespan, yet there is little agreement about what types and aspects of stress matter most for human health and disease. This is in part because "stress" is not a monolithic concept but rather, an emergent process that involves interactions between individual and environmental factors, historical and current events, allostatic states, and psychological and physiological reactivity. Many of these processes alone have been labeled as "stress." Stress science would be further advanced if researchers adopted a common conceptual model that incorporates epidemiological, affective, and psychophysiological perspectives, with more precise language for describing stress measures...
April 2018: Frontiers in Neuroendocrinology
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