Abstract:
:Single and population-mean cosinor analyses document a circadian rhythm in salivary cortisol of pigs (p < 0.001). The midline estimated statistic of rhythm, the MESOR (M), is 1.50 +/- 0.07 ng/ml. For the group of 14 pigs studied there was a predictable variation of 64% around this mean in salivary cortisol within a day: the double circadian amplitude, 2A, was 0.96 ng/ml, with a 95% confidence interval ranging from 0.60 to 1.32 ng/ml. A measure of timing, the acrophase, phi, was 10 h 52 min from the phase reference (0030, the middle of the daily dark span of the 24-h light-dark cycle in which the pigs were kept). The 95% confidence interval of phi extended from 9 h 48 min to 12 h 12 min from the reference time. The chronobiologic approach provides indispensable quantitive characteristics as reference standards for future basic or applied work.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Ekkel ED,Dieleman SJ,Schouten WG,Portela A,Cornélissen G,Tielen MJ,Halberg Fdoi
10.1016/0031-9384(96)00107-2subject
Has Abstractpub_date
1996-09-01 00:00:00pages
985-9issue
3eissn
0031-9384issn
1873-507Xpii
0031-9384(96)00107-2journal_volume
60pub_type
杂志文章abstract::Ten Hooded Lister rats were divided from weaning into two groups of five. One group was fed exclusively on a liquid diet in the home cage (Complan-fed subjects), the other group was given normal laboratory chow (Chow-fed subjects). At approximately 60 days of age both groups were reduced to 80% of their ad lib body-we...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(84)90062-3
更新日期:1984-01-01 00:00:00
abstract::The effects of naltrexone on the behavior in mice were investigated by using a multi-dimensional behavioral analyser. Within 15 min following observation, naltrexone preferentially suppressed the linear locomotion at the 10 and 30 mg/kg doses. The results suggest that naltrexone selectively disrupts the linear locomot...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(85)90121-0
更新日期:1985-02-01 00:00:00
abstract:PURPOSE:The aim of this observational study was to identify biomechanical differences, as measured by pharyngeal manometric pressure patterns, between discrete and continuous water swallowing, as well as volitionally initiated and reflexive swallowing. METHODS:Using pharyngeal manometry, swallowing-related pressures f...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2014.12.029
更新日期:2015-03-01 00:00:00
abstract::Two experiments examined the effects of various photoperiods on body weight and reproductive function in Syrian hamsters (Mesocricetus auratus). In Experiment 1 female hamsters were exposed to symmetrical skeleton photoperiods in which dawn and dusk were mimicked by 1-hr light pulses. A skeleton long (LD 16:8) photope...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:
更新日期:1986-01-01 00:00:00
abstract::The aim of this study was to differentiate between maternal and offspring factors involved in the control of milk ingestion. Specifically, we investigated: (1) the temporal pattern of milk ingestion in fasted and non-fasted sucklings; (2) the amount of milk released as compared to that of milk available; and (3) the r...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(84)90052-0
更新日期:1984-11-01 00:00:00
abstract:OBJECTIVE:Epilepsy is the most common neurological chronic condition worldwide, affecting about 2% of world population. Temporal lobe epilepsy (TLE) reaches 40% of all cases of this condition, and it is highly refractory to pharmacological treatment. Physical activity has been suggested as complementary therapy for epi...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2016.12.040
更新日期:2017-03-15 00:00:00
abstract::The effects of kindling of the right anterior medial amygdala of Wistar rats was studied. Kindling lastingly increased anxiety (decreased open-arm exploration) in the elevated plus-maze 1 week after the last kindled seizure, replicating previous findings. Changes in anxiety were independent of changes in exploration o...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/s0031-9384(00)00247-x
更新日期:2000-07-01 00:00:00
abstract::Exploratory, locomotor and ambulatory activities were measured in nine independent groups of three inbred strains of mice (BALB/cBy, C57BL/6J and DBA/2J), at three different ages (150 days, 400 days and 750 days). The results show that for two of the three variables, the age-related changes present different patterns ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(89)90063-2
更新日期:1989-03-01 00:00:00
abstract::Estradiol exerts an inhibitory effect on food intake via interactions with anorexigenic peptides, like cholecystokinin, that function to decrease meal size. It is currently unknown whether estradiol also interacts with orexigenic compounds implicated in the physiological control of food intake. Thus, the primary goal ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2006.05.002
更新日期:2006-07-30 00:00:00
abstract::Cardiomyopathic hamsters (CMH) develop heart disease early in life which leads to congestive heart failure and death as these hamsters age. We have previously shown that living in constant light or other non-24-h light-dark (LD) cycles can increase longevity in these hamsters, and the current experiment examined poten...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/s0031-9384(97)00250-3
更新日期:1997-11-01 00:00:00
abstract::Numerous studies conducted with human participants have shown that differences in chronotype, defined as individual patterns of early or late beginning of daily activity, have implications for many biobehavioral processes, such as cognitive performance, mood, impulsivity, academic achievement of college students, and ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2018.11.019
更新日期:2019-02-01 00:00:00
abstract::In mammals, body mass at birth is an important predictor of early postnatal growth and survival. Within litters, heavier young are more successful in competing for limited resources and show higher rates of growth and survival than their lighter sibs. In the present study, we investigated the contribution of two aspec...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2014.10.028
更新日期:2015-01-01 00:00:00
abstract::Intracranial self-stimulation (ICSS) evoked from the ventral tegmental area-substantia nigra (VTA-SN) and lateral hypothalamus-medial forebrain bundle (LH-MFB) was assessed following microinjections of mu (Tyr-D-Ala2-N-Me-Phe4-Gly5ol: DAGO), delta-(D-Ala2, D-Met5)-enkephalin: DADME) or kappa (Dynorphin-B or Rimorphin)...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(94)90036-1
更新日期:1994-04-01 00:00:00
abstract::The effects of loratadine, a peripherally acting histamine (H1) antagonist, and methysergide, a serotonin (5-HT) antagonist, were evaluated in seven normal-weight, male research volunteers, participating in a placebo-controlled, double-blind, 17-day residential study. Participants received oral loratadine (10 or 20 mg...
journal_title:Physiology & behavior
pub_type: 临床试验,杂志文章
doi:10.1016/s0031-9384(98)00046-8
更新日期:1998-05-01 00:00:00
abstract::Individuals who are sensitive to the bitter compounds phenylthiocarbamide (PTC) and 6-n-propylthiouracil (PROP) are also more sensitive to selected bitter and sweet substances, to sharp-tasting foods, and to the trigeminal irritant capsaicin. PTC/PROP tasters have a greater density of fungiform taste papillae and it i...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/s0031-9384(96)00608-7
更新日期:1997-06-01 00:00:00
abstract::The aim of this work was to study the evolution of rat food choice in relation to their age and metabolic parameters. Eighty Wistar rats were studied from birth to 13 weeks of age. At weaning, six litters were fed on a macronutrient self-selecting diet and four on a standard diet. In self-selecting males, protein inta...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/s0031-9384(02)00676-5
更新日期:2002-05-01 00:00:00
abstract::Calorie restriction (CR) has been promoted to increase longevity. Previous studies have indicated that CR can negatively affect mood and therefore the effect of CR on mood and quality of life (QOL) becomes crucial when considering the feasibility of CR in humans. We conducted a three month clinical trial on CR (reduct...
journal_title:Physiology & behavior
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.physbeh.2011.07.007
更新日期:2011-10-24 00:00:00
abstract::To evaluate whether the suprachiasmatic nuclei (SCN) control 24-h rhythmicity in cardiovascular function, rats were subjected to computerized recording of 24-h blood pressure (BP) and heart rate (HR) following SCN lesions. In sham- and nonlesioned rats, circadian patterns of BP and HR ran in phase with those in feedin...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(94)90138-4
更新日期:1994-02-01 00:00:00
abstract::The duration of action and potency of endogenous opioid peptides are limited by proteolytic enzymes such as endopeptidases 24.11 and 24.15. Whereas endopeptidase 24.11 cleaves enkephalin pentapeptides, endopeptidase 24.15 degrades longer-chained opioids including dynorphin A1-8 and met-enkephalin-Arg6-Gly7-Leu8 (MERGL...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(91)90027-l
更新日期:1991-10-01 00:00:00
abstract::Male Wistar rats living in colonies of 4 males plus 4 females were compared to noncolony males, cohabitating with a female. Irreversible dominance relationships developed between one dominant male (D) and three subordinates (S). Dominants developed high basal testosterone levels and large preputial glands. Subordinate...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(92)90078-g
更新日期:1992-05-01 00:00:00
abstract::Foxy or Methoxy Foxy (5-methoxy-N,N-di(iso)propyltryptamine hydrochloride; 5-MeO-DIPT) is rapidly gaining popularity among recreational users as a hallucinogenic "designer drug." Unfortunately, much remain unknown about the consequences of its use on neuropsychological development or behavior. During one of two adoles...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2011.01.021
更新日期:2011-05-03 00:00:00
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::Prolonged consumption of ketogenic diets (KD) has reported neuroprotective benefits. Several studies suggest KD interventions could be useful in the management of neurological and developmental disorders. Alterations in the Engrailed (En) genes, specifically Engrailed 2 (En2), have neurodevelopmental consequences and ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2016.04.001
更新日期:2016-07-01 00:00:00
abstract::Research investigating sodium hunger in mice has failed to produce evidence that mineralocorticoids are involved in sodium appetite. In our own laboratory, doses of deoxycorticosterone acetate (DOCA) ranging from 1 mg/kg to 20 mg/kg have failed to induce a sodium appetite. In rats, glucocorticoids have been effective ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/s0031-9384(96)00247-8
更新日期:1996-11-01 00:00:00
abstract::Chemical blockade of the ventromedial hypothalamus (VMH) by single microinjections of pentobarbital in ad lib fed male Wistar rats induced a meal that did not outlast a 10-min postinjection period. When food was presented only after this period, feeding was nearly absent. Repeating the injection after 10 and 20 min le...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(80)90055-4
更新日期:1980-06-01 00:00:00
abstract::Individual variation in the way animals cope with stressors has been documented in a number of animal groups. In general, two distinct sets of behavioural and physiological responses to stress have been described: the proactive and the reactive coping styles. Some characteristics of stress coping style seem to be coup...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2011.02.025
更新日期:2011-06-01 00:00:00
abstract::Adolescent rats differ in their responses to stress and ethanol from their adult counterparts, although not much is known about the contribution of the autonomic nervous system (ANS) to these differences. This study assessed the impact of stress, ethanol, and their combination on parameters of heart rate variability (...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2014.05.037
更新日期:2014-08-01 00:00:00
abstract::Women were divided into those eating at a decelerated or linear rate. Eating rate was then experimentally increased or decreased by asking the women to adapt their rate of eating to curves presented on a computer screen and the effect on food intake and satiety was studied. Decelerated eaters were unable to eat at an ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2008.10.011
更新日期:2009-02-16 00:00:00
abstract::Intrauterine growth restriction and slow neonatal growth in humans are each associated with poorer learning, memory and cognitive flexibility in childhood and adulthood. The relative contributions of pre- and post-natal growth to cognitive outcomes are unclear, however. We therefore compared performance in learning, m...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/j.physbeh.2015.08.042
更新日期:2015-12-01 00:00:00
abstract::The alcohol withdrawal syndrome consists of a kinetic tremor, the tremorous component, and a peculiar abnormality of tone called asterixis, the muscular rigidity component. The severity of the ethanol withdrawal syndrome in the rat is generally assessed by the severity of the tremors. 3-Hydroxybutyrate suppresses the ...
journal_title:Physiology & behavior
pub_type: 杂志文章
doi:10.1016/0031-9384(86)90123-x
更新日期:1986-01-01 00:00:00