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Physiology & Behavior

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https://www.readbyqxmd.com/read/28095986/erratum-to-effects-of-eph-ephrin-mutations-on-pre-pulse-inhibition-in-mice-physiology-behavior-135-2014-232-236
#1
Andrea Liuzzo, Lincoln Gray, Matthew Wallace, Mark L Gabriele
No abstract text is available yet for this article.
January 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28095318/interoceptive-modulation-of-neuroendocrine-emotional-and-hypophagic-responses-to-stress
#2
REVIEW
James W Maniscalco, Linda Rinaman
Periods of caloric deficit substantially attenuate many centrally mediated responses to acute stress, including neural drive to the hypothalamic-pituitary-adrenal (HPA) axis, anxiety-like behavior, and stress-induced suppression of food intake (i.e., stress hypophagia). It is posited that this stress response plasticity supports food foraging and promotes intake during periods of negative energy balance, even in the face of other internal or external threats, thereby increasing the likelihood that energy stores are repleted...
January 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28093219/a-mixed-glucocorticoid-mineralocorticoid-receptor-modulator-dampens-endocrine-and-hippocampal-stress-responsivity-in-male-rats
#3
Elizabeth T Nguyen, Joshua Streicher, Sarah Berman, Jody L Caldwell, Valentina Ghisays, Christina M Estrada, Aynara C Wulsin, Matia B Solomon
Aberrant glucocorticoid secretion is implicated in the pathophysiology of stress-related disorders (i.e., depression, anxiety). Glucocorticoids exert biological effects via mineralocorticoid (MR) and glucocorticoid (GR) receptors. Previous data from our laboratory indicate that GR antagonism/modulation (i.e., mifepristone, CORT 108297) regulate endocrine, behavioral, and central stress responses. Because of the dynamic interplay between MR and GR on HPA axis regulation and emotionality, compounds targeting both receptors are of interest for stress-related pathology...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28093218/-the-effect-of-different-genres-of-music-on-the-stress-levels-of-kennelled-dogs
#4
A Bowman, F J Dowell, N P Evans
Classical music has been shown to reduce stress in kennelled dogs; however, rapid habituation of dogs to this form of auditory enrichment has also been demonstrated. The current study investigated the physiological and behavioural response of kennelled dogs (n=38) to medium-term (5days) auditory enrichment with five different genres of music including Soft Rock, Motown, Pop, Reggae and Classical, to determine whether increasing the variety of auditory stimulation reduces the level of habituation to auditory enrichment...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089704/brain-mineralocorticoid-receptor-function-in-control-of-salt-balance-and-stress-adaptation
#5
REVIEW
E Ronald de Kloet, Marian Joëls
We will highlight in honor of Randall Sakai the peculiar characteristics of the brain mineralocorticoid receptor (MR) in its response pattern to the classical mineralocorticoid aldosterone and the naturally occurring glucocorticoids corticosterone and cortisol. Neurons in the nucleus tractus solitarii (NTS) express MR, which mediate selectively the action of aldosterone on salt appetite, sympathetic outflow and volume regulation. The MR-containing NTS neurons innervate limbic-forebrain circuits enabling aldosterone to also modulate reciprocally arousal, motivation, fear and reward...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089708/hair-corticosterone-measurement-in-mouse-models-of-type-1-and-type-2-diabetes-mellitus
#6
Rebecca L Erickson, Caroline A Browne, Irwin Lucki
In diabetes, glucocorticoid secretion increases secondary to hyperglycemia and is associated with an extensive list of disease complications. Levels of cortisol in humans, or corticosterone in rodents, are usually measured as transitory biomarkers of stress in blood or saliva. Glucocorticoid concentrations accumulate in human or animal hair over weeks and could more accurately measure the cumulative stress burden of diseases like chronic diabetes. In this study, corticosterone levels were measured in hair in verified rodent models of diabetes mellitus...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089707/understanding-infant-eating-behaviour-lessons-learned-from-observation
#7
REVIEW
Marion M Hetherington
Observations of human infants during feeding presents a rich source of data to identify the ways in which hunger, appetite and satiety are communicated in early life. Infants signal appetite through their interest or disinterest in food using a series of communication cues from rapid and transient facial expressions to subtle or potent gestures and bodily movements through to vocalisations and eventually speech. Even in the first days of life facial expressions in response to basic tastes are clearly demonstrated and shared between human infants, other primates and the rat...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089706/a-sipometer-for-measuring-motivation-to-consume-and-reward-value-of-foods-and-beverages-in-humans-description-and-proof-of-principle
#8
P S Hogenkamp, A Shechter, M-P St-Onge, A Sclafani, H R Kissileff
New methods, derived from animal work, for measuring food reward value, i.e. reinforcing value of food, and motivation (i.e. strength of desire) to consume, in humans are described and validated. A sipping device (sipometer) was developed that permits access to a liquid food or beverage on two reward schedules: continuous reinforcement (CR) and progressively increasing time spent exerting pressure on a straw (PR-schedule). In addition, a pictorial scale showing a cup, from which the 'amount wanted' could be marked was used to pre-test potential consumption...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089705/so-as-we-worry-we-weigh-visible-burrow-system-stress-and-visceral-adiposity
#9
REVIEW
Michelle T Foster
The visible borrow system (VBS) simulates a natural rodent habitat that supports genuine stress provoking social interactions. This model allows investigation of behavioral, neural and endocrine alterations caused by chronic stress. The Sakai lab further used this model to investigate metabolic outcomes of stress in relation to dominance hierarchies formed within the VBS. Communal social conflict occurs among all VBS rats, but only the SUB rats succumb to the redistribution of lipids in the visceral cavity and consequent metabolic dysregulation, such as hyper-insulinemia...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089703/to-each-its-own-gender-differences-in-affective-autonomic-and-behavioral-responses-to-same-sex-and-opposite-sex-visual-sexual-stimuli
#10
Michela Sarlo, Giulia Buodo
A large body of research on gender differences in response to erotic stimuli has focused on genital and/or subjective sexual arousal. On the other hand, studies assessing gender differences in emotional psychophysiological responding to sexual stimuli have only employed erotic pictures of male-female couples or female/male nudes. The present study aimed at investigating differences between gynephilic men and androphilic women in emotional responding to visual sexual stimuli depicting female-male, female-female and male-male couples...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089702/the-visible-burrow-system-a-view-from-across-the-hall
#11
REVIEW
James P Herman, Kellie L Tamashiro
The visible burrow system (VBS) is an ethologically relevant social stress model that creates a distinct dominance hierarchy in rats. Randall Sakai's laboratory performed an impressive series of studies documenting the very different impact of VBS exposure on the brain and behavior of dominants (DOM) and subordinates (SUBs). Hierarchy formation causes pronounced changes in metabolism in SUBs relative to both DOMs and unstressed controls, resulting in marked weight loss and metabolic imbalance. Stress testing revealed multiple phenotypes in the VBS, including DOMs, stress-responsive SUBs and stress-non-responsive SUBs...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28088559/increased-expression-of-carbon-monoxide-producing-enzymes-in-the-mpoa-after-sexual-experience-in-male-rats
#12
Christopher L Robison, Jenna A McHenry, Elaine M Hull
The hypothalamus contains numerous nuclei involved in the regulation of reproductive, stress, circadian, and homeostatic behaviors, with many of these nuclei concentrated within the preoptic and anterior regions. The gaseous neurotransmitter, nitric oxide (NO), has already been shown to have an important regulatory role within the medial preoptic area (MPOA) of the anterior hypothalamus, where it facilitates sexual behaviors. However, little is known about the role of other gaseous neurotransmitters in this area...
January 11, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28088558/the-effects-of-upper-body-exercise-across-different-levels-of-blood-flow-restriction-on-arterial-occlusion-pressure-and-perceptual-responses
#13
Kevin T Mattocks, Matthew B Jessee, Brittany R Counts, Samuel L Buckner, J Grant Mouser, Scott J Dankel, Gilberto C Laurentino, Jeremy P Loenneke
Recent studies have investigated relative pressures that are applied during blood flow restriction exercise ranging from 40%-90% of resting arterial occlusion pressure; however, no studies have investigated relative pressures below 40% arterial occlusion pressure. The purpose of this study was to characterize the cardiovascular and perceptual responses to different levels of pressures. Twenty-six resistance trained participants performed four sets of unilateral elbow flexion exercise using 30% of their 1RM in combination with blood flow restriction inflated to one of six relative applied pressures (0%, 10%, 20%, 30%, 50%, 90% arterial occlusion pressure)...
January 11, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28087365/parasite-induced-increases-in-the-energy-costs-of-movement-of-host-freshwater-fish
#14
Ondřej Slavík, Pavel Horký, Karel Douda, Josef Velíšek, Jitka Kolářová, Pavel Lepič
Parasitization by the larvae (glochidia) of freshwater mussels can cause harm to a fish's gills, resulting in less effective respiration and/or reduced activity by the host fish. The impact of glochidia infections on the host's physiology remains poorly understood, and no information is available concerning energy consumption in parasitized fish. Hence, we obtained glochidia of the invasive unionid mussel Sinanodonta (Anodonta) woodiana and experimentally infected common carp, Cyprinus carpio, tagged with physiological sensors to measure energy consumption...
January 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28082248/pain-modulation-as-a-function-of-hypnotizability-diffuse-noxious-inhibitory-control-induced-by-cold-pressor-test-vs-explicit-suggestions-of-analgesia
#15
Fabrizia Fidanza, Maurizio Varanini, Antonella Ciaramella, Giancarlo Carli, Enrica L Santarcangelo
The aim of the present study was to compare the effects of explicit suggestions of analgesia and of the activation of the Diffuse Noxious Inhibitory Control (DNIC) by cold pressor test on pain perception and heart rate in healthy participants with high (highs, N=18), low (lows, N=18) and intermediate scores of hypnotizability (mediums, N=15) out of hypnosis. Pain reports and the stimulus-locked heart rate changes induced by electrical nociceptive stimulation of the left hand were studied in the absence of concomitant stimuli (Control), during suggestions of analgesia (SUGG, glove analgesia) and during cold pressor test used as a conditioning stimulus to the right hand (DNIC, water temperature=10-12°C) in the REAL session...
January 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28082247/the-impact-of-psychological-stress-on-cardiovascular-function-and-health
#16
EDITORIAL
Brent Myers, Yvonne M Ulrich-Lai
No abstract text is available yet for this article.
January 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28082246/prepubertal-ovariectomy-modulates-paced-mating-behavior-but-not-sexual-preference-or-conditioned-place-preference-for-mating-in-female-rats
#17
Sarah H Meerts, Kelly S Anderson, Molly E Farry-Thorn, Elliott G Johnson, Lisa Taxier
The present study investigated whether the presence or absence of peripubertal ovarian hormones affects sexual preference and conditioned place preference for paced mating in adult female rats primed with 10μg estradiol benzoate and 1mg progesterone. Ovariectomy (OVX) occurred either before or after pubertal development, and 4weeks later rats began a series of behavioral tests. Rats with ovaries removed before the pubertal timeframe (Prepubertal OVX) were more active, more likely to withdrawal from the male compartment, and did not discriminate between mounts and intromissions during paced mating relative to rats with ovaries during puberty (Adult OVX)...
January 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28082245/corticosterone-administration-after-a-single-trial-contextual-fear-conditioning-does-not-influence-the-strength-and-specificity-of-recent-and-remote-memory-in-rats
#18
A Bueno, J P Q Paiva, M S Correa, P A Tiba, R V Fornari
It is well established that corticosterone (CORT) enhances memory consolidation of emotionally arousing experiences. Despite emotional memories being usually referred to as well remembered for long periods, there are no studies that have investigated the effects of CORT in modulating the duration and specificity of memory.In the present study, we trained Wistar rats in a single-trial contextual fear conditioning protocol and injected CORT (0.3, 1.0 or 3.0mg/kg), immediately after training, to investigate its effects on memory consolidation...
January 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28077281/does-acute-or-habitual-protein-deprivation-influence-liking-for-monosodium-glutamate
#19
Una Masic, Martin R Yeomans
The umami flavour generated by monosodium glutamate (MSG) has been proposed as the marker for the presence of protein in foods. As protein is the most closely regulated macronutrient in the diet, the present study addressed whether acute protein deprivation, habitual protein intake or a combination of the two influenced liking for the taste of MSG. 24 low-restraint male participants (mean age: 22; BMI: 23) consumed either their habitual breakfast (baseline), a low protein breakfast (breakfast meal with low protein milk and milkshake) or a high protein breakfast (breakfast meal with high protein milk and milkshake) on three different days, and then evaluated the acceptability of umami (MSG), salty (NaCl) or sweet (Acesulphame K) tastes at low or high concentrations in a soup context at lunchtime...
January 7, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28069457/quercetin-prevents-chronic-unpredictable-stress-induced-behavioral-dysfunction-in-mice-by-alleviating-hippocampal-oxidative-and-inflammatory-stress
#20
Vineet Mehta, Arun Parashar, Malairaman Udayabanu
It is now evident that chronic stress is associated with anxiety, depression and cognitive dysfunction and very few studies have focused on identifying possible methods to prevent these stress-induced disorders. Previously, we identified abundance of quercetin in Urtica dioica extract, which efficiently attenuated stress related complications. Therefore, current study was designed to investigate the effect of quercetin on chronic unpredicted stress (CUS) induced behavioral dysfunction, oxidative stress and neuroinflammation in the mouse hippocampus...
January 7, 2017: Physiology & Behavior
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