keyword
MENU ▼
Read by QxMD icon Read
search

Allostasis

keyword
https://www.readbyqxmd.com/read/28483870/how-birds-cope-physiologically-and-behaviourally-with-extreme-climatic-events
#1
REVIEW
John C Wingfield, Jonathan H Pérez, Jesse S Krause, Karen R Word, Paulina L González-Gómez, Simeon Lisovski, Helen E Chmura
As global climate change progresses, the occurrence of potentially disruptive climatic events such as storms are increasing in frequency, duration and intensity resulting in higher mortality and reduced reproductive success. What constitutes an extreme climatic event? First we point out that extreme climatic events in biological contexts can occur in any environment. Focusing on field and laboratory data on wild birds we propose a mechanistic approach to defining and investigating what extreme climatic events are and how animals cope with them at physiological and behavioural levels...
June 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28445556/allostasis-and-the-epigenetics-of-brain-and-body-health-over-the-life-course-the-brain-on-stress
#2
Bruce S McEwen
No abstract text is available yet for this article.
April 26, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28350080/homeostasis-and-the-concept-of-interstitial-fluids-hierarchy-relevance-of-cerebrospinal-fluid-sodium-concentrations-and-brain-temperature-control%C3%A2-review
#3
Luigi F Agnati, Manuela Marcoli, Giuseppina Leo, Guido Maura, Diego Guidolin
In this review, the aspects and further developments of the concept of homeostasis are discussed also in the perspective of their possible impact in the clinical practice, particularly as far as psychic homeostasis is concerned. A brief historical survey and comments on the concept of homeostasis and allostasis are presented to introduce our proposal that is based on the classical assumption of the interstitial fluid (ISF) as the internal medium for multicellular organisms. However, the new concept of a hierarchic role of ISF of the various organs is introduced...
February 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28291298/-neurobiology-of-alcohol-dependence-and-implications-on-treatment
#4
Ertuğrul Eşel, Köksal Dinç
The process of alcohol dependence has been conceptualized as a progress from controlled alcohol intake to compulsive alcohol consumption or a shift from alcohol intake for pleasure to compulsory alcohol seeking behavior. Hereditary and physical factors and the interaction of individuals with their environment, as well as permanent changes in the neurotransmitter and neurohormonal systems in the brain due to alcohol use, play the most important role in the etiology of alcohol dependence. The effects of ethanol on the neurotransmitter, neuropeptide and neuroendocrine systems not only account for its acute physiological and euphoric/reinforcing effects but also seem to be responsible for the development of dependence...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
https://www.readbyqxmd.com/read/28210209/lactate-shuttles-in-neuroenergetics-homeostasis-allostasis-and-beyond
#5
REVIEW
Shayne Mason
Understanding brain energy metabolism-neuroenergetics-is becoming increasingly important as it can be identified repeatedly as the source of neurological perturbations. Within the scientific community we are seeing a shift in paradigms from the traditional neurocentric view to that of a more dynamic, integrated one where astrocytes are no longer considered as being just supportive, and activated microglia have a profound influence. Lactate is emerging as the "good guy," contrasting its classical "bad guy" position in the now superseded medical literature...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28204813/homeostasis-and-the-concept-of-interstitial-fluids-hierarchy-relevance-of-cerebrospinal-fluid-sodium-concentrations-and-brain-temperature-control%C3%A2-review
#6
REVIEW
Luigi F Agnati, Manuela Marcoli, Giuseppina Leo, Guido Maura, Diego Guidolin
In this review, the aspects and further developments of the concept of homeostasis are discussed also in the perspective of their possible impact in the clinical practice, particularly as far as psychic homeostasis is concerned. A brief historical survey and comments on the concept of homeostasis and allostasis are presented to introduce our proposal that is based on the classical assumption of the interstitial fluid (ISF) as the internal medium for multicellular organisms. However, the new concept of a hierarchic role of ISF of the various organs is introduced...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28177541/allostatic-load-a-useful-concept-for-advancing-nursing-research
#7
Marie-Anne S Rosemberg, Yang Li, Julia Seng
AIMS AND OBJECTIVES: To elucidate the historical development of the allostatic load concept, alongside its use in nursing research, and to explore how allostatic load has been investigated among two stress-vulnerable populations. BACKGROUND: 'Stress' is a prominent term in understanding the development of disease. Allostatic load is among several approaches undertaken to quantify the magnitude of stress and understand how stress can affect health. METHOD: We explored the advent of allostatic load including its antecedents, and consequences...
February 8, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28105719/allostatic-load-and-biological-anthropology
#8
Ashley N Edes, Douglas E Crews
Multiple stressors affect developing and adult organisms, thereby partly structuring their phenotypes. Determining how stressors influence health, well-being, and longevity in human and nonhuman primate populations are major foci within biological anthropology. Although much effort has been devoted to examining responses to multiple environmental and sociocultural stressors, no holistic metric to measure stress-related physiological dysfunction has been widely applied within biological anthropology. Researchers from disciplines outside anthropology are using allostatic load indices (ALIs) to estimate such dysregulation and examine life-long outcomes of stressor exposures, including morbidity and mortality...
January 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28080969/an-active-inference-theory-of-allostasis-and-interoception-in-depression
#9
Lisa Feldman Barrett, Karen S Quigley, Paul Hamilton
In this paper, we integrate recent theoretical and empirical developments in predictive coding and active inference accounts of interoception (including the Embodied Predictive Interoception Coding model) with working hypotheses from the theory of constructed emotion to propose a biologically plausible unified theory of the mind that places metabolism and energy regulation (i.e. allostasis), as well as the sensory consequences of that regulation (i.e. interoception), at its core. We then consider the implications of this approach for understanding depression...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080966/active-interoceptive-inference-and-the-emotional-brain
#10
REVIEW
Anil K Seth, Karl J Friston
We review a recent shift in conceptions of interoception and its relationship to hierarchical inference in the brain. The notion of interoceptive inference means that bodily states are regulated by autonomic reflexes that are enslaved by descending predictions from deep generative models of our internal and external milieu. This re-conceptualization illuminates several issues in cognitive and clinical neuroscience with implications for experiences of selfhood and emotion. We first contextualize interoception in terms of active (Bayesian) inference in the brain, highlighting its enactivist (embodied) aspects...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28042822/enduring-sexually-dimorphic-impact-of-in-utero-exposure-to-elevated-levels-of-glucocorticoids-on-midbrain-dopaminergic-populations
#11
REVIEW
Glenda E Gillies, Kanwar Virdee, Ilse Pienaar, Felwah Al-Zaid, Jeffrey W Dalley
Glucocorticoid hormones (GCs) released from the fetal/maternal glands during late gestation are required for normal development of mammalian organs and tissues. Accordingly, synthetic glucocorticoids have proven to be invaluable in perinatal medicine where they are widely used to accelerate fetal lung maturation when there is risk of pre-term birth and to promote infant survival. However, clinical and pre-clinical studies have demonstrated that inappropriate exposure of the developing brain to elevated levels of GCs, either as a result of clinical over-use or after stress-induced activation of the fetal/maternal adrenal cortex, is linked with significant effects on brain structure, neurological function and behaviour in later life...
December 30, 2016: Brain Sciences
https://www.readbyqxmd.com/read/28035531/neuroimmune-modulation-of-gut-function
#12
Terez Shea-Donohue, Joseph F Urban
Neuroimmune communications are facilitated by the production of neurotransmitters by immune cells and the generation of immune mediators by immune cells, which form a functional entity called the "neuroimmune synapse." There are several mechanisms that further facilitate neuroimmune interactions including the anatomic proximity between immune cells and nerves, the expression of receptors for neurotransmitters on immune cells and for immune mediators on nerves, and the receptor-mediated activation of intracellular signaling pathways that modulate nerve and immune phenotype and function...
2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27988258/allostatic-load-and-pain-severity-in-older-adults-results-from-the-english-longitudinal-study-of-ageing
#13
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...
February 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/27895566/allostatic-self-efficacy-a-metacognitive-theory-of-dyshomeostasis-induced-fatigue-and-depression
#14
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/27876789/allostasis-in-health-and-food-addiction
#15
Dirk De Ridder, Patrick Manning, Sook Ling Leong, Samantha Ross, Sven Vanneste
Homeostasis is the basis of modern medicine and allostasis, a further elaboration of homeostasis, has been defined as stability through change, which was later modified to predictive reference resetting. It has been suggested that pleasure is related to salience (behavioral relevance), and withdrawal has been linked to allostasis in addictive types. The question arises how the clinical and neural signatures of pleasure, salience, allostasis and withdrawal relate, both in a non-addicted and addicted state. Resting state EEGs were performed in 66 people, involving a food-addicted obese group, a non-food addicted obese group and a lean control group...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27739386/allostatic-load-and-comorbidities-a-mitochondrial-epigenetic-and-evolutionary-perspective
#16
Robert-Paul Juster, Jennifer J Russell, Daniel Almeida, Martin Picard
Stress-related pathophysiology drives comorbid trajectories that elude precise prediction. Allostatic load algorithms that quantify biological "wear and tear" represent a comprehensive approach to detect multisystemic disease processes of the mind and body. However, the multiple morbidities directly or indirectly related to stress physiology remain enigmatic. Our aim in this article is to propose that biological comorbidities represent discrete pathophysiological processes captured by measuring allostatic load...
November 2016: Development and Psychopathology
https://www.readbyqxmd.com/read/27722957/understanding-blood-pressure-variation-and-variability-biological-importance-and-clinical-significance
#17
Gary D James
Variability is a normative property of blood pressure necessary for survival which likely contributes to morbidity and mortality through allostatic load. Because of its allostatic and adaptive properties blood pressure responses to peculiar situations like the visit to the clinic can lead to the misdiagnosis of hypertension. Cuff methods of blood pressure measurement can also create blood pressure variation when there really is none. There are also physiological differences between populations related to their evolutionary history that likely further affect the extent of population differences in 24-h blood pressure variability...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27670390/allostatic-mechanisms-of-opioid-tolerance-beyond-desensitization-and-downregulation
#18
REVIEW
Catherine M Cahill, Wendy Walwyn, Anna M W Taylor, Amynah A A Pradhan, Christopher J Evans
Mechanisms of opioid tolerance have focused on adaptive modifications within cells containing opioid receptors, defined here as cellular allostasis, emphasizing regulation of the opioid receptor signalosome. We review additional regulatory and opponent processes involved in behavioral tolerance, and include mechanistic differences both between agonists (agonist bias), and between μ- and δ-opioid receptors. In a process we will refer to as pass-forward allostasis, cells modified directly by opioid drugs impute allostatic changes to downstream circuitry...
November 2016: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/27626192/physiological-regulation-how-it-really-works
#19
Douglas S Ramsay, Stephen C Woods
Contrary to dogma, much physiological regulation utilizes learning from past experience to make responses that preemptively and effectively neutralize anticipated regulatory challenges. Understanding physiological regulation therefore requires expanding explanatory models beyond homeostasis and allostasis to emphasize the prominence of conditioning.
September 13, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/27568027/lifetime-variation-in-feather-corticosterone-levels-in-a-long-lived-raptor
#20
Lidia López-Jiménez, Julio Blas, Alessandro Tanferna, Sonia Cabezas, Tracy Marchant, Fernando Hiraldo, Fabrizio Sergio
In long-lived animals, the challenges that threaten individual homeostasis, and the way they are dealt with, are expected to vary in an age-related manner, encompassing the progressive selection of superior phenotypes and the acquisition and improvement of key skills (e.g. foraging, breeding and fighting abilities). Since exposure to homeostatic challenges typically elevates circulating glucocorticoid (GC) levels in vertebrates (modulating the behavioural and physiological responses that mediate allostasis), we may expect concomitant age-related changes in these hormones...
February 2017: Oecologia
keyword
keyword
8147
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"