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Stress: the International Journal on the Biology of Stress

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https://read.qxmd.com/read/30961414/uncontrollable-chronic-stress-affects-eating-behavior-in-rats
#1
Marina Liliana González-Torres, Cristiano Valerio Dos Santos
The issue of whether the decrease in food intake induced by inescapable shock is due to the uncontrollability of the stressor or the shock per se has not yet been settled. Besides, whether food intake is differentially affected by an uncontrollable chronic stressor has been explored only by a few studies. Thus, we evaluated the effects of chronic escapable or inescapable electric shocks on eating behavior. Rats were exposed to shock sessions for 20 days in two occasions separated by baseline sessions with no shock in an ABAB design...
April 8, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30961412/delayed-effects-of-psychosocial-stress-on-risk-taking
#2
Jan Nowacki, Moritz Duesenberg, Christian Eric Deuter, Christian Otte, Katja Wingenfeld
Several studies found that acute stress leads to increased risk taking in humans. However, this effect appears to be time-dependent because the few studies that examined delayed (>40 min after stress onset) stress effects show in fact a decrease in risk taking. In 32 young healthy women, we intra-individually examined whether psychosocial stress decreases risk taking 80 min after stress induction. All participants performed the Balloon Analog Risk Task (BART) twice: once after exposure to the Trier social stress test (TSST) and once after a control condition Placebo-TSST (P-TSST)...
April 8, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30957615/the-power-of-positive-stress-and-a-research-roadmap
#3
David S Jessop
No abstract text is available yet for this article.
April 7, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30945584/stress-measurement-using-speech-recent-advancements-validation-issues-and-ethical-and-privacy-considerations
#4
George M Slavich, Sara Taylor, Rosalind W Picard
Life stress is a well-established risk factor for a variety of mental and physical health problems, including anxiety disorders, depression, chronic pain, heart disease, asthma, autoimmune diseases, and neurodegenerative disorders. The purpose of this article is to describe emerging approaches for assessing stress using speech, which we do by reviewing the methodological advantages of these digital health tools, and the validation, ethical, and privacy issues raised by these technologies. As we describe, it is now possible to assess stress via the speech signal using smartphones and smart speakers that employ software programs and artificial intelligence to analyze several features of speech and speech acoustics, including pitch, jitter, energy, rate, and length and number of pauses...
April 4, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30938228/acute-stress-enhances-the-sensitivity-for-facial-emotions-a-signal-detection-approach
#5
Gregor Domes, Patrick Zimmer
Facial emotion recognition is an important prerequisite for social cognition. There is, however, limited evidence on how the ability to detect facial emotions is influenced by acute stress and the associated physiological reactions. In this study, two groups of healthy male participants were either exposed to a psychosocial stressor - an adaptation of the Trier Social Stress Test in virtual reality (n = 23) - or a non-stressful control task in the virtual environment (n = 20). Afterwards, both groups completed a computerized facial recognition task based on the signal detection theory presenting happy vs...
April 2, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30935351/salivary-cortisol-profiles-of-on-call-from-home-fire-and-emergency-service-personnel
#6
Sarah J Hall, Anne I Turner, Samuel J Robertson, Sally A Ferguson, Brad Aisbett
Working on-call with a night call resulted in a depressed (lower) cortisol awakening response (CAR) peak and post-awakening cortisol area under the curve with respect to ground (AUCG ) the following day compared to when off-call. This may be due to exposure to noise, physical exertion, and stressful events during night callouts. There was no anticipatory effect to working on-call in any of the cortisol measures examined. This study, of male fire and emergency service workers who operate on-call from home, had two aims: (1) examine CAR and diurnal cortisol profile following a night on-call with a call, on-call without a call, and off-call; and, (2) explore whether there is an anticipatory effect of working on-call from home on diurnal cortisol profiles...
April 2, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30896270/emotional-arousal-modifies-auditory-steady-state-response-in-the-auditory-cortex-and-prefrontal-cortex-of-rats
#7
Yuchen Wang, Zijie Li, Zemin Tian, Xuejiao Wang, Yingzhuo Li, Ling Qin
Emotional state has been shown to influence cognitive performance. However, the influence of mood on auditory processing is not fully understood. The auditory steady state response (ASSR) is the entrainment of neural activities elicited by periodic auditory stimulation, which is commonly used to evaluate the sensory and cognitive functions of brain. It has been shown that ASSR at 40 Hz is impaired at some psychotic disorders, such as schizophrenia and bipolar disorder. The primary goal of this study is to investigate the effect of emotional arousal on ASSR...
March 21, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30896268/cortisol-stress-reactivity-in-women-diurnal-variations-and-hormonal-contraceptives-studies-from-the-family-health-patterns-project
#8
William R Lovallo, Andrew J Cohoon, Ashley Acheson, Andrea S Vincent, Kristen H Sorocco
Women have smaller cortisol responses to psychological stress than men do, and women taking hormonal contraceptives (HC+) have smaller responses than HC- women. Cortisol secretion undergoes substantial diurnal variation, with elevated levels in the morning and lower levels in the afternoon, and these variations are accompanied by differences in response to acute stress. However, the impact of HC use on these diurnal relationships has not been examined. We tested saliva cortisol values in 744 healthy young adults, 351 men and 393 women, 254 HC- and 139 HC+, who were assigned to morning (9:00 am) or afternoon (1:00 pm) test sessions that were held both on a rest day and on a stress day that included public speaking and mental arithmetic challenges...
March 21, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30857457/intense-resistance-training-induces-pronounced-metabolic-stress-and-impairs-hypertrophic-response-in-hind-limb-muscles-of-rats
#9
Vinicius Guzzoni, Larissa Briet, Rafaela Costa, Rodrigo W A Souza, Fernanda R Carani, Maeli Dal-Pai-Silva, Kleiton A S Silva, Tatiana S Cunha, Fernanda K Marcondes
Skeletal muscle hypertrophy is an exercise-induced adaptation, particularly in resistance training (RT) programs that use large volumes and low loads. However, evidence regarding the role of rest intervals on metabolic stress and muscular adaptations is inconclusive. Thus, we aimed to investigate the effects of a strenuous RT model (jump-training) on skeletal muscle adaptations and metabolic stress, considering the scarce information about RT models for rats. We hypothesized that jump-training induces metabolic stress and influences negatively the growth of soleus (SOL) and extensor digitorum longus (EDL) muscles of rats...
March 12, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30856045/an-experimental-investigation-into-cardiovascular-haemodynamic-and-salivary-alpha-amylase-reactivity-to-acute-stress-in-type-d-individuals
#10
Sarah F Allen, Mark A Wetherell, Michael A Smith
Type D personality is characterized by increased social inhibition and negative affectivity. Research demonstrates associations between Type D and poor physical health. Maladaptive sympathetic arousal is suggested as a potential mechanism, however, findings are inconsistent and studies mainly focus on basic cardiovascular parameters. The current study examines cardiovascular and haemodynamic parameters in addition to salivary alpha amylase (sAA) as markers of sympathetic stress reactivity in Type D individuals...
March 11, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30838897/decreased-stress-induced-depression-like-behavior-in-lactating-rats-is-associated-with-changes-in-the-hypothalamic-pituitary-adrenal-axis-brain-monoamines-and-brain-amino-acid-metabolism
#11
Mizuki Hamada, Takuma Nishigawa, Saori Maesono, Kenta Aso, Hiromi Ikeda, Mitsuhiro Furuse
Depression-like behavior during lactation may relate to changes in the hypothalamic-pituitary-adrenal (HPA) axis, brain monoamines, and brain amino acid metabolism. This study investigated how the behavior, HPA axis activity, brain monoamines, and brain free amino acid metabolism of rats were changed by stress or lactation period. Rats were separated into four groups: (1) control lactating (n = 6), (2) stress lactating (n = 6), (3) control virgin (n = 7), and (4) stress virgin (n = 7) and restrained for 30 min a total of ten times (once every other day) from postnatal day (PND) 1...
March 6, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30835598/sexual-orientation-disclosure-and-cardiovascular-stress-reactivity
#12
Robert-Paul Juster, David Matthew Doyle, Mark L Hatzenbuehler, Bethany G Everett, L Zachary DuBois, Jennifer J McGrath
Stigma may strain the heart health of lesbian, gay, and bisexual (LGB) individuals. To date, however, LGB-related differences in cardiovascular diagnosis, risk factors, and basal biomarkers are inconsistently reported. Using a laboratory-based stress paradigm, the current study assessed whether cardiovascular stress reactivity differs as a function of sexual orientation and disclosure status ("coming out") in a sample of healthy young LGB and heterosexual adults. Eighty-seven participants aged 18-45 (M = 24...
March 5, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30835590/hair-cortisol-allostatic-load-and-depressive-symptoms-in-australian-aboriginal-and-torres-strait-islander-people
#13
Maximus Berger, Sean Taylor, Linton Harriss, Sandra Campbell, Fintan Thompson, Samuel Jones, Ashleigh Sushames, G Paul Amminger, Zoltan Sarnyai, Robyn McDermott
Chronic stress and adversity are associated with poor mental health and are thought to contribute to the existing mental health gap between Aboriginal and Torres Strait Islander people and other Australians. Hair cortisol and allostatic load (AL) are indices of sustained stress and may be mediators of the effects of stress on health. The aim of this study was to examine the relationship between hair cortisol, AL, and depressive symptoms. This cross-sectional study comprised 329 Aboriginal and Torres Strait Islander adolescents and adults recruited at two health screening programs operating in three communities in north Queensland...
March 5, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30822219/heart-rate-increase-predicts-challenging-behavior-episodes-in-preschoolers-with-autism
#14
Heather J Nuske, Emma Finkel, Darren Hedley, Valentina Parma, Liza Tomczuk, Melanie Pellecchia, John Herrington, Steven C Marcus, David S Mandell, Cheryl Dissanayake
Identifying triggers for challenging behavior is difficult in some children with autism because of their limited communication abilities. Physiological indicators of stress may provide important insights. This study examined whether heart rate (HR) predicts challenging behavior in children with autism. While wearing an electrocardiograph monitor, 41 children with autism aged 2- to 4-years participated in tasks designed to induce low-level stress (e.g. waiting for a snack). Coders identified 106 time periods during which challenging behaviors occurred and also coded 106 randomly selected time samples that did not include challenging behaviors...
March 1, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30821572/regulating-glycolysis-the-tlr4-signal-pathway-and-expression-of-rbm3-in-mouse-liver-in-response-to-acute-cold-exposure
#15
Hongzhao Shi, Ruizhi Yao, Shuai Lian, Peng Liu, Yang Liu, Yu Ying Yang, Huanmin Yang, Shize Li
At low temperatures, the liver increases glucose utilization and expresses RNA-binding motif 3 (RBM3) to cope with cold exposure. In this study, the expression of heat shock protein 70 (HSP70), Toll-like receptor 4 (TLR4), bone marrow differentiation factor 88 (MYD88), and phosphorylated nuclear factor-κB (NF-κB) was consistent with fluctuations in insulin in fasted cold-exposed mice. We also found up-regulation of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) in acute cold exposure with a decrease in core body temperature...
March 1, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30806185/in-sickness-and-in-health-partner-s-physical-and-mental-health-predicts-cortisol-levels-in-couples
#16
Dixie Meyer, Joanne Salas, Stephanie Barkley, Tony W Buchanan
Individuals in stable relationships tend to be healthier than those not in stable relationships. Despite this general positive influence of relationships on health, the mechanisms for the impact of relationship quality on health are not clear. Research has focused on many factors to explain this connection, including inter- and intra-couple dynamics of physiology and behavior. To address this issue, we examined the relationship between perceived health, depressive symptoms, and relationship quality on diurnal cortisol in 30 male/female romantic dyads (N = 60)...
February 26, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30806133/legacy-environmental-polychlorinated-biphenyl-contamination-attenuates-the-acute-stress-response-in-a-cartilaginous-fish-the-round-stingray
#17
Kady Lyons, Katherine E Wynne-Edwards
In a population of Round Stingrays (Urobatis halleri) sampled from mainland California (polychlorinated biphenyl [PCB] exposed site, n = 46), relative to a nearby offshore island (reference site, n = 34), we tested the hypothesis that stingrays from the PCB-exposed site would have a compromised stress response. Adult male and pregnant female (pregnancy = matrotrophic histotrophy), stingrays were captured via hook and line at both locations over a breeding season and plasma was sampled either immediately (Baseline, males = 10, females = 31), or after ∼5 min of struggle on the line followed by a 15 min confinement stressor (Stressed, males = 16, females = 23)...
February 26, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30806129/the-effects-of-cinnamaldehyde-on-acute-or-chronic-stress-induced-anxiety-related-behavior-and-locomotion-in-male-mice
#18
Farshid Etaee, Alireza Komaki, Nafiseh Faraji, Arezoo Rezvani-Kamran, Somayeh Komaki, Parisa Hasanein, Mohammad Taheri, Ghazaleh Omidi
Anxiety and stress are considered as universal psychiatric exhibitions of the present societies and lifestyles. Several experiments have been conducted to examine natural anxiolytic agents to find out an alternative to synthetic anxiolytic drugs. The present study investigated the anxiolytic effects of cinnamaldehyde (Cin) on mice behavior in the elevated plus maze (EPM) and open field (OF) tests. Sixty male Swiss mice, weighing 20-30 g, were divided into six groups including: acute stress + mazola oil; chronic stress + oil; acute stress + Cin (20 mg/kg); chronic stress + Cin; non-stress + oil; and non-stress + Cin groups...
February 26, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30806128/psychobiological-impact-of-speaking-a-second-language-in-healthy-young-men
#19
Susanne Fischer, Corinne M Spoerri, Andrea Gmuer, Manuela Wingeier, Urs M Nater, Jens Gaab, Ulrike Ehlert, Beate Ditzen
The use of second languages is ubiquitous in modern societies. Despite many benefits, there is also evidence for this to cause or exacerbate stress (e.g. in the form of foreign language anxiety). The aim of the present study was to examine to which extent speaking a second language increases acute psychobiological stress in a social context. A total of N = 63 healthy Swiss males were randomly allocated to one of two conditions: completing the Trier Social Stress Test (TSST) in Swiss German (their first language) vs...
February 26, 2019: Stress: the International Journal on the Biology of Stress
https://read.qxmd.com/read/30806126/identification-of-reliable-reference-genes-for-quantitative-real-time-pcr-in-ovary-and-uterus-of-laying-hens-under-heat-stress
#20
Hossein Hassanpour, Zahra Aghajani, Shahab Bahadoran, Navid Farhadi, Hasan Nazari, Waranyoo Kaewduangta
The main stage in real-time quantitative PCR is a quantification of gene transcriptomes, in which suitable use of reliable reference genes is critical to normalize accurately. To determine the most stable reference genes in laying hens under heat stress, from a panel of nine typical candidate reference genes, the mRNA transcript of ACTB, HMBS, HPRT1, RPL13, RPL32, 18SrRNA, TBP, TFRC, and YWHAZ was evaluated in the ovary and uterus of both control and heat-stress groups of laying hens. Forty 23-week-old White Leghorn laying hens were housed in two rooms...
February 26, 2019: Stress: the International Journal on the Biology of Stress
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