Abstract：
:We examined the physiological and psychological status of men and women who spent the summer (n=100) and/or winter (n=85) seasons in Antarctica at McMurdo (latitude 78.48 S, elevation 12 m) and South Pole (latitude 90 S, elevation 3880 m) stations to determine whether there were any significant differences by severity of the stations' physical environment. Physiological measures (body mass index, blood pressure, heart rate, tympanic temperature), serum measures of thyroid hormones, cortisol, and lipids and plasma catecholamines were obtained at predeployment (Sep-Oct) and the beginning of the summer (November) and winter (Mar-Apr) seasons. Cognitive performance and mood were assessed using the Automatic Neuropsychological Assessment Metric - Isolated and Confined Environments (ANAM-ICE), a computerized test battery. South Pole residents had a lower body mass index (p<0.05) and body temperature (p<0.01) and higher levels of plasma norepinephrine (p<0.05) in summer and winter than McMurdo residents. Upon deployment from the United States and during the summer, South Pole residents experienced significantly higher thyroid hormone values (free and total T(3) and T(4)) (p<0.01) than McMurdo residents; in summer they also experienced lower levels of triglycerides (p<0.01) cortisol (p<0.05) and LDL (p<0.05). In winter, South Pole residents also experienced a 39% decrease in serum TSH compared with a 31.9% increase in McMurdo (p<0.05). South Pole residents also were significantly more accurate (p<0.05) and efficient (p<0.01) in performance of complex cognitive tasks in summer and winter. Higher thyroid hormone levels, combined with lower BMI and body temperature, may reflect increased metabolic and physiological responses to colder temperatures and/or higher altitude at South Pole with no apparent adverse effect on mood and cognition.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Palinkas LA,Reedy KR,Shepanek M,Smith M,Anghel M,Steel GD,Reeves D,Case HS,Do NV,Reed HLdoi
10.1016/j.physbeh.2007.06.008subject
Has Abstractpub_date
2007-12-05 00:00:00pages
790-9issue
5eissn
0031-9384issn
1873-507Xpii
S0031-9384(07)00250-8journal_volume
92pub_type
杂志文章abstract：:Nootropic, antioxidant, and neuroprotective properties have been shown in a standardized ethanol extract of Ptychopetalum olacoides (POEE), a medicinal plant traditionally used by the Amazonian elderly population. It has been revealed that POEE mechanisms of action include anticholinesterase effects, and involve beta-...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.04.022
更新日期：2008-09-03 00:00:00
abstract：:Sheep of calm or nervous temperament differ in their physiological (cortisol secretion) and behavioural (motor activity) responses to stressors, perhaps due to variation in genes that regulate glucocorticoid synthesis or brain dopamine activity. Using ewes that had been selected over 20 generations for nervous (n=58) ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.10.022
更新日期：2016-01-01 00:00:00
abstract：:Spontaneous behavior patterns were assessed in eight different behavioral situations in two lines of mice, BR and BS, previously selected for their sensitivity to an anxiogenic benzodiazepine (BZ) receptor inverse agonist, Methyl beta-carboline-3-carboxylate (beta-CCM). BR is highly resistant, and BS, highly sensitive...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(00)00383-8
更新日期：2000-12-01 00:00:00
abstract：:Major histocompatibility complex (MHC) genes influence urinary odors (odortypes) of mice. That volatile odorants are involved is supported by the observation that odortype identity can be detected from a distance. Furthermore, chemical analyses of urines have revealed numerous volatile odorants that differ in relative...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.10.003
更新日期：2009-01-08 00:00:00
abstract：:Previous research has demonstrated that rapid eye movement (REM), or paradoxical, sleep deprivation can interfere with the retention of certain types of learning tasks, particularly spatial learning. The present study investigated the effects of 6 h of REM sleep deprivation on the retention and extinction of both cued...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.11.011
更新日期：2005-03-16 00:00:00
abstract：:Air puff-induced ultrasonic vocalizations in adult rats, termed "22-kHz calls," have been applied as a useful animal model to develop psychoneurological and psychopharmacological studies focusing on human aversive affective disorders. To date, all previous studies on air puff-induced 22-kHz calls have used outbred rat...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.12.022
更新日期：2016-03-01 00:00:00
abstract：:Chemical neurotransmitters (NT) are principal actors in all neuronal networks of animals. The central nervous system plays an important role in stress susceptibility and organizes the response to a stressful situation through the interaction of the dopaminergic and the serotonergic pathways, leading to the activation ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2016.10.005
更新日期：2016-12-01 00:00:00
abstract：:The obesity epidemic is a major health and economic burden facing both developed and developing countries worldwide. Interrogation of the central and peripheral mechanisms regulating ingestive behaviors have primarily focused on food intake, and in the process uncovered a detailed neuroanatomical framework controlling...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2017.10.006
更新日期：2018-06-01 00:00:00
abstract：:The development of the nervous system is a dynamic process where epigenetic factors play a fundamental role. Both ground-based and space research indicate that exposure to an altered gravitational environment affects rodent neurobehavioral profile and stage of development as well as duration of exposure appear to be c...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.08.011
更新日期：2004-12-15 00:00:00
abstract：:Acute exercise evokes an almost instantaneous lymphocytosis, followed by sustained lymphopenia that occurs within just 30-60 min after exercise cessation. The aim of this study was to characterize the immediate (order of minutes) post-exercise kinetics of lymphocyte and monocyte egress, and to determine whether this e...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2018.06.008
更新日期：2018-10-01 00:00:00
abstract：:Stocking density is considered a stress factor for fish and is therefore one of the numerous concerns about fish welfare in an aquaculture context. Stress coping styles (SCS) are defined as a coherent set of individual physiological and behavioral differences in stress responses that are consistent across time and con...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.112698
更新日期：2019-12-01 00:00:00
abstract：:Nutrient stimulation of the enteroendocrine L-cells induces the release of the glucagon-like peptide-1 (GLP-1), an incretin and satiating peptide. Due to its short half-life, meal-induced GLP-1's effects on food intake and glycemia are likely to be mediated in part by a paracrine signaling mechanism near the site of r...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2015.06.001
更新日期：2015-12-01 00:00:00
abstract：:Psychological stress is an important perpetuating, worsening and risk factor for temporomandibular disorders of muscular or articular origin. Occlusion instability, by the way, is considered a risk factor of this pathology and can be reproduced in some experimental animal models. The exact physiologic mechanism underl...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2017.12.026
更新日期：2018-03-01 00:00:00
abstract：:Anterior perifornical hypothalamic injection of l-norepinephrine in satiated rats elicits a brief, vigorous drinking response followed within a minute or two by a vigorous feeding response. These adrenergically elicited responses, which bear striking similarities to a rat's naturally motivated ingestive behaviors, wer...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(75)90066-9
更新日期：1975-06-01 00:00:00
abstract：:Jejunoileal bypass (JIB) surgery reduces food intake and body weight in obese humans and rats. Human bypass patients report visceral discomfort following surgery, and the present study assessed the aversive consequences of JIB in rats using a conditioned taste aversion paradigm. In Experiment 1 rats given a cherry-fla...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90369-5
更新日期：1985-05-01 00:00:00
abstract：:Avian and mammalian 'rapid eye movement' sleep (REM sleep) resemble each other in several aspects. However, the question of whether REM sleep has a shared evolutionary ancestry in birds and mammals has yet to be thoroughly explored. The brain regions and neurotransmitter systems involved in the generation of mammalian...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2005.12.003
更新日期：2006-03-30 00:00:00
abstract：:The present research explored the effects of a high and low carbohydrate diet on ratings of perceived exertion (RPE) during a 10 minute bicycle ergometer test at high physical work capacity (70% of maximum aerobic capacity). Twelve female student volunteers participated and were randomly assigned the order of diet tre...
journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0031-9384(85)90140-4
更新日期：1985-10-01 00:00:00
abstract：:There is some evidence suggesting that stress may induce diabetes mellitus; the effects of restraint stress however need to be investigated. The present study investigates the role of chronic restraint stress on carbohydrate metabolism in male rats. The animals of the stressed group (n=8) were exposed to different res...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.06.023
更新日期：2006-10-30 00:00:00
abstract：:The effects of pinealectomy on locomotor behavior responses to cold, heat or pain were assessed in freely moving rats. External cold (4 degrees C) or heat (36 degrees C) stress produced increases of locomotion (including horizontal and vertical movement, and total distance traveled), increases of number of turnings (i...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90120-1
更新日期：1994-03-01 00:00:00
abstract：OBJECTIVES:To examine the mechanism of 5-lipoxygenase (5-LO) in the learning and memory dysfunction in rats subjected to chronic unpredictable mild stress (CUMS). METHODS:Eighty rats were divided into eight groups: the 0.5% sodium carboxymethyl cellulose solution (NaCMC)-treated group, empty vector (LV-Mock)-treated g...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2016.09.010
更新日期：2016-12-01 00:00:00
abstract：:The effects of immediate posttraining subcutaneous administration of naloxone (0.25, 1 or 5 mg/kg) on retention behaviour of rats trained in an inhibitory avoidance task, subjected or not to familiarization with the training situation prior to the training trial (pretraining) have been investigated. Naloxone did not i...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90394-4
更新日期：1985-11-01 00:00:00
abstract：:Pharmacogenetically selected apomorphine-susceptible (APO-SUS) and apomorphine-unsusceptible (APO-UNSUS) rats were trained in a discrimination learning paradigm. After the initial discrimination task was solved, reinforcement contingencies were reversed. No differences between APO-SUS and APO-UNSUS animals were found ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(92)90278-a
更新日期：1992-08-01 00:00:00
abstract：:Food intake and gastric emptying were measured simultaneously after cholecystokinin-octapeptide (CCK-8) and saline infusions in order to test the hypothesis that reduction in gastric emptying mediates the effect of CCK-8 on food intake. Each of twelve nonobese healthy men received intravenous infusions of CCK-8 and sa...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90330-7
更新日期：1988-01-01 00:00:00
abstract：:Sex hormones have been reported to dynamically modulate the expression of implicit motives, a concept that has previously been thought to be relatively stable over time. This study investigates to what extent the need for affiliation, power, and achievement, as well as the form of enactment of these needs as measured ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2013.09.016
更新日期：2014-01-17 00:00:00
abstract：:Young-adult, female Binghamton Heterogeneous Stock (HET) mice either were exposed to lead via drinking water from birth, or not. Eight days after giving birth to their first litter of pups (at about 70-75 days of age), postpartum aggression tests were conducted. Unfamiliar Het male intruders were introduced to the pri...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90053-x
更新日期：1989-11-01 00:00:00
abstract：:To investigate the possible involvement of leptin signaling in lipopolysaccharide (LPS) anorexia, we compared the anorectic effect of LPS in genetically obese (fa/fa) Zucker rats and in their lean (Fa/?) counterparts. The effects of interleukin-1beta (IL-1beta) and muramyl dipeptide (MDP) were also tested. LPS [100 mi...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.11.003
更新日期：2005-01-31 00:00:00
abstract：:Increasing doses of naltrexone (25 to 200 mg) given over 4 consecutive days reduced intake of laboratory luncheon meals by 30% in 17 obese men. Meal size remained suppressed in the laboratory during the week following naltrexone administration. Water intake in the laboratory and body weight were not affected. Rates of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90198-3
更新日期：1987-01-01 00:00:00
abstract：:Female rats have a fertile postpartum estrus, which can result in a simultaneous gestation and lactation and later in the overlapping of two different-age litters. These different physiological and contextual situations may affect the maternal behavior of lactating rats and provoke long-lasting changes in the affectiv...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.02.004
更新日期：2008-03-18 00:00:00
abstract：:Thirty-six rats were injected IP with 2DG (0, 250, or 500 mg/kg) at 7-day intervals, once at light onset (7 a.m.) and once at dark onset (7 p.m.), and postinjection food intake was monitored for 24 hours. Five hundred mg/kg 2DG caused food intake to rise above control levels during the first 6 hours of daylight, regar...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90179-0
更新日期：1989-01-01 00:00:00
abstract：:Steroid-responsive behaviors have been reported in various species; however, the reports thus far on the male Asian elephant (bull) during musth are few in number and most have been conducted on single captive animals for short time periods. The purpose of this investigation was to perform a longitudinal study on ster...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00563-x
更新日期：1997-05-01 00:00:00
