Abstract：
:Among the suite of seasonal adaptations displayed by nontropical rodents, some species demonstrate increased territorial aggression in short compared with long day lengths despite basal levels of testosterone. The precise physiological mechanisms mediating seasonal changes in aggression, however, remain largely unknown. The goal of the present study was to examine the role of melatonin, as well as adrenal hormones, in the regulation of seasonal aggression in male Siberian hamsters (Phodopus sungorus). In Experiment 1, male Siberian hamsters received either daily (s.c.) injections of melatonin (15 microg/day) or saline 2 h before lights out for 10 consecutive days. In Experiment 2, hamsters received adrenal demedullations (ADMEDx), whereas in Experiment 3 animals received adrenalectomies (ADx); control animals in both experiments received sham surgeries. Animals in both experiments subsequently received daily injections of melatonin or vehicle as in Experiment 1. Animals in all experiments were tested using a resident-intruder model of aggression. In Experiment 1, exogenous melatonin treatment increased aggression compared with control hamsters. In Experiment 2, ADMEDx had no effect on melatonin-induced aggression. In Experiment 3, the melatonin-induced increase in aggression was significantly attenuated by ADx. Collectively, the results of the present study demonstrate that short day-like patterns of melatonin increase aggression in male Siberian hamsters and suggest that increased aggression is due, in part, to changes in adrenocortical steroids.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Demas GE,Polacek KM,Durazzo A,Jasnow AMdoi
10.1016/j.yhbeh.2004.07.001keywords:
subject
Has Abstractpub_date
2004-12-01 00:00:00pages
582-91issue
5eissn
0018-506Xissn
1095-6867pii
S0018-506X(04)00153-9journal_volume
46pub_type
杂志文章abstract：:We investigated whether sexual activity was associated with reproductive function in the BioCycle Study, a prospective cohort study that followed 259 regularly menstruating women aged 18 to 44years for one (n=9) or two (n=250) menstrual cycles in 2005-2007. Women were not attempting pregnancy nor using hormonal contra...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.06.012
更新日期：2014-07-01 00:00:00
abstract：:Melatonin has been suggested to affect human emotion, but conflicting evidence exists. Therefore, we tested the effect of a single dose of a 4 mg prolonged release formulation of melatonin on a biologically based model of emotional processing. Affective modulation of acoustic white noise startle (103 dB) by emotional ...
journal_title：Hormones and behavior
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.yhbeh.2008.03.013
更新日期：2008-08-01 00:00:00
abstract：:In rodents, parts of the arginine-vasopressin (AVP) neuronal system are sexually dimorphic with males having more AVP-immunoreactive cells/fibers than females. This neuropeptide neuronal system is highly sensitive to steroids and has been proposed to play an important role in the processing of olfactory cues critical ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.02.001
更新日期：2008-06-01 00:00:00
abstract：:We tested the two main evolutionary hypotheses for an association between immunity and personality. The risk-of-parasitism hypothesis predicts that more proactive (bold, exploratory, risk-taking) individuals have more vigorous immune defenses because of increased risk of parasite exposure. In contrast, the pace-of-lif...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.09.005
更新日期：2017-02-01 00:00:00
abstract：:The individual time patterns of salivary testosterone of adult healthy men, self-reported sexual behavior and their co-occurrence with regular weekly or monthly intervals were studied. Twenty-seven volunteer males (mean age 33 +/- 1 years) collected daily morning saliva over a period of 90 days. Evening questionnaires...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2002.1815
更新日期：2002-09-01 00:00:00
abstract：:When ovariectomized/adrenalectomized female rats, injected with subthreshold doses of estradiol are given copulatory stimulation by a male rat at half hour intervals, the level of lordosis gradually increases over the course of a few hours. We tested the hypothesis that paracopulatory behaviors (behaviors that occur r...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.12.008
更新日期：2009-03-01 00:00:00
abstract：:In rats, progesterone (P) facilitates sexual receptivity by interacting with intracellular progestin receptors in the ventromedial hypothalamus (VMH). This experiment concerns whether P can also facilitate receptivity in rats by acting extragenomically within the ventral tegmental area (VTA). Ovariectomized rats (n = ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1996.0069
更新日期：1996-12-01 00:00:00
abstract：:Biparental male hamsters, Phodopus campbelli, act as midwives during the birth of their litter and are highly responsive to an experimentally displaced pup. They also have high peripheral concentrations of estradiol, a hormone with known roles in maternal behavior. Surgical castration during the gestation of their fir...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.04.001
更新日期：2005-09-01 00:00:00
abstract：:A growing body of research indicates that testosterone influences spatial cognition in male rats; however, the overwhelming majority of studies have been conducted on tasks motivated by either food deprivation or water escape. The hippocampus-dependent version of the Y-maze task, which characterizes spatial recognitio...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2013.02.007
更新日期：2013-04-01 00:00:00
abstract：:The anxiety- and stress-related neuropeptide corticotropin-releasing factor (CRF) elicits behavioral changes in vertebrates including increases in behavioral arousal and locomotor activity. Intracerebroventricular injections of CRF in an amphibian, the roughskin newt (Taricha granulosa), induces rapid increases in loc...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2009.04.006
更新日期：2009-06-01 00:00:00
abstract：:Androgens act on the CNS to affect motor function through interaction with a widespread distribution of intracellular androgen receptors (AR). This review highlights our work on androgens and process outgrowth in motoneurons, both in vitro and in vivo. The actions of androgens on motoneurons involve the generation of ...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2008.01.014
更新日期：2008-05-01 00:00:00
abstract：:We investigated whether puberty influences the morphology of the medial nucleus of the amygdala (MeA) by comparing Siberian hamsters (Phodopus sungorus) that had been raised from birth in either long day (LD; 16:8 h light:dark) or short day (SD; 8:16) photoperiods. Hamsters were sacrificed at 42-49 days of age, at whi...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2007.04.008
更新日期：2007-09-01 00:00:00
abstract：:Dopamine is synthesized from l-dopa and subsequently processed into norepinephrine and epinephrine. Any excess neurotransmitter can be taken up again by the neurons to be broken down enzymatically into DOPAC. The effect of dopamine on mammalian food intake is controversial. Mice unable to synthesize central dopamine d...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2013.05.008
更新日期：2013-06-01 00:00:00
abstract：:The role of reproductive hormones in mediating sexual desire in healthy women is still unclear. Elucidation was sought in this study by comparing the hormonal milieu of two groups of subjects with markedly different levels of sexual desire. Seventeen women ages 27-39 who met DSM III-R criteria for severe, persistent, ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(89)90063-9
更新日期：1989-06-01 00:00:00
abstract：:When rats are mated in a traditional mating chamber (with one male and one female) in which the male dictates the pace of the copulatory sequence, males develop a reward state as evaluated by conditioned place preference (CPP). In this mating situation no reward state is induced in females. However, when female rats a...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2001.1712
更新日期：2001-12-01 00:00:00
abstract：:The objectives of these studies were to evaluate the influence of testosterone propionate (TP), estradiol cypionate (EC), dihydrotestosterone propionate (DHTP), EC + TP, EC + DHTP, and TP + DHTP on traits of masculine sexual behavior in castrated adult male pigs of different breeds. Masculine sexual behavior was resto...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(89)90052-4
更新日期：1989-09-01 00:00:00
abstract：:The behavioral and endocrine activation of sexual behaviors exhibited by male goats, especially self-enurination (SE), is poorly understood. In the first experiment, to assess the influence of socio-sexual context on SE in bucks, the effects of distance from does, the presence of estrous versus non-estrous does and th...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2019.01.008
更新日期：2019-03-01 00:00:00
abstract：:Despite decades of laboratory research and clinical trials, a safe and effective treatment for traumatic brain injury (TBI) has yet to be put into successful clinical use. I suggest that much of the problem can be attributed to a reductionist perspective and attendant research strategy directed to finding or designing...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2012.05.004
更新日期：2013-02-01 00:00:00
abstract：:Female assessment of male attractiveness and how preferred qualities impact reproductive success is central to the study of mate choice. Male attractiveness may depend on traits beneficial to the reproductive success (RS) of any female, termed 'universal quality', and/or on behavioral and biological interactions betwe...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.10.009
更新日期：2012-01-01 00:00:00
abstract：:Sex hormones are significant regulators of stress reactivity, however, little is known about how genetic variation in hormone receptors contributes to this process. Here we report interactions between biological sex and repeat polymorphisms in genes encoding sex hormone receptors, and their effects on salivary cortiso...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2018.10.002
更新日期：2018-11-01 00:00:00
abstract：:Hormone replacement therapy (HRT) may be prescribed to prevent the symptoms of menopause. This therapy may include estrogenic and/or progestin components and may increase the incidence of endometrial and breast cancers. Tibolone (TIB), which is also made up of estrogen and progestin components, is often used to reduce...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.10.005
更新日期：2012-01-01 00:00:00
abstract：:When animals are under stress, glucocorticoids commonly inhibit adult neurogenesis by acting through glucocorticoid receptors (GRs). However, in some cases, conditions that elevate glucocorticoids promote adult neurogenesis, and the role of glucocorticoid receptors in these circumstances is not well understood. We exa...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.06.001
更新日期：2011-08-01 00:00:00
abstract：:The transition to motherhood results in a number of hormonal, neurological, and behavioral changes necessary to ensure offspring survival. Once motherhood is established, further neurological and behavioral changes may result with additional parity and mothering. Recent research has shown that motherhood enhances both...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.05.016
更新日期：2006-02-01 00:00:00
abstract：:A field experiment was performed implanting female pied flycatchers (Ficedula hypoleuca) during the nest-building period with silastic tubes containing 17 beta-estradiol. Control females were given empty silastic tubes. The pied flycatcher is a polygamous and polyterritorial bird species. During two successive breedin...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(91)90038-j
更新日期：1991-03-01 00:00:00
abstract：:This article is part of a Special Issue "Chemosignals and Reproduction". In mammalian species, odor cues emitted by the newborn are essential to establish maternal behavior at parturition and coordinate early mother-infant interactions. Offspring odors become potent attractive stimuli at parturition promoting the cont...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2014.06.018
更新日期：2015-02-01 00:00:00
abstract：:Estrogen impairs performance on some striatum-sensitive tasks of learning and memory. Evidence indicates that it may have these impairing effects by creating a bias to use hippocampally based strategies to solve tasks whether or not it is advantageous to do so. Estrogen may also exert direct effects in the striatum to...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.05.001
更新日期：2006-01-01 00:00:00
abstract：:Many species, including humans, engage in a series of behaviors that are preparatory to the arrival of offspring. Such "nesting behaviors" are of obvious importance, but relevant neuroendocrine mechanisms remain little studied. We here focus on the potential roles of vasoactive intestinal polypeptide (VIP) in the perf...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.12.010
更新日期：2015-03-01 00:00:00
abstract：:Chemical communication is a critical component of social behavior as it facilitates social encounters, allows for evaluation of the social partner, defines territories and resources, and advertises information such as sex and physiological state of an animal. Odors provide a key source of information about the social ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.02.005
更新日期：2016-05-01 00:00:00
abstract：:Previous studies have documented the ability of neural grafts to stimulate the recovery of lordosis from neurochemical deficits. However, it was unclear if grafts also could reverse deficits in lordosis caused by lesions at critical points in the neural circuit controlling this response. To address this question, fema...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1997.1421
更新日期：1997-12-01 00:00:00
abstract：:The hormone oxytocin (OT) is released both centrally and peripherally during and after mating. Although research in humans suggests a central role in sexuality, the most reliable findings to date involve peripheral activation. This review will discuss these results and will particularly focus on understanding the most...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2011.11.001
更新日期：2012-03-01 00:00:00
