Abstract:
:Short-term fluctuations in steroid hormones such as estradiol (E2) and progesterone (P) can affect the concentration of hippocampal dendritic spines in adult, cycling nulliparous female rats. Pregnancy is characterized by a significantly longer duration of substantially elevated E2 and P compared to the estrous cycle. Thus, even greater changes than those reported during estrus may be evident. In two experiments, we examined the extent to which reproductive and hormonal state altered the concentration of apical neuronal dendritic spines of the CA1 region of the hippocampus in the following age-matched groups (N's = 7-10/group) of rats: in Exp. 1., CA1 dendritic spine density was examined in nulliparous diestrus (DES), proestrus (PRO), and estrus (ES) females, and late-pregnant (LP) (day 21) and lactating (day 5-6; LACT) females. In Exp. 2, the effects on spine density of a regimen mimicking pregnancy (and that stimulates maternal behavior) were examined, using ovariectomized, no hormone-exposed (OVX-minus) vs. sequential P&E(2)-treated (OVX + P&E2) groups. For both experiments, brains were removed, Golgi-Cox-stained and the most lateral tertiary branches of the apical dendrite of completely-stained hippocampal CA1 pyramidal neurons were traced with oil-immersion at x 1600 and dendritic spine density (# spines/10 micro dendritic segment) recorded. In Exp. 1, spine density was increased in LP and LACT females (which were not different) compared to the other virgin groups, including PRO females, who had more spines than DES and ES. In Exp. 2, OVX + P&E2 displayed significantly more dendritic spines per 10 micro than OVX-minus females (and had numbers that were similar to those of LP and LACT from Exp. 1). Pregnancy and its attendant hormonal fluctuations, therefore, may alter hippocampal neurons that regulate some non-pup-directed components of maternal behavior (e.g., nest building) or behaviors that support maternal behavior (e.g., foraging, associative memory).
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Kinsley CH,Trainer R,Stafisso-Sandoz G,Quadros P,Marcus LK,Hearon C,Meyer EA,Hester N,Morgan M,Kozub FJ,Lambert KGdoi
10.1016/j.yhbeh.2005.05.017keywords:
subject
Has Abstractpub_date
2006-02-01 00:00:00pages
131-42issue
2eissn
0018-506Xissn
1095-6867pii
S0018-506X(05)00142-Xjournal_volume
49pub_type
杂志文章abstract::Lizards provide a rich opportunity for investigating the mechanisms associated with arousal and the display of motivated behaviors. They exhibit diverse mating strategies and modes of conspecific communication. This review focuses on anole lizards, of which green anoles (Anolis carolinensis) have been most extensively...
journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2010.08.014
更新日期:2011-05-01 00:00:00
abstract::The present study examined whether the following variables putatively associated with prenatal androgens are inter-related in women: spatial abilities, sexual orientation, and 2nd to 4th finger (digit) length ratio (2D:4D). Participants were 99 healthy premenopausal women tested in the menstrual phase of the ovarian c...
journal_title:Hormones and behavior
pub_type: 临床试验,杂志文章
doi:10.1016/j.yhbeh.2004.09.003
更新日期:2005-01-01 00:00:00
abstract::Previous experiments demonstrate that lesions of the septum produce opposite effects on intraspecific male aggression in the territorial field sparrow (Spizella pusilla) and the colonial zebra finch (Taeniopygia guttata; facilitate vs inhibit, respectively) and intraseptal infusions of arginine vasotocin (AVT) and vas...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1998.1467
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abstract::The time of day at which mating occurs is dramatically different in diurnal compared to nocturnal rodents. We used a diurnal murid rodent, Arvicanthis niloticus, to determine if inverted rhythms in responsiveness to hormones contribute to this difference. Male and hormone-primed female grass rats were tested for matin...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2004.07.006
更新日期:2005-01-01 00:00:00
abstract::Blood samples were taken from free-living male and female mockingbirds to determine correlations between plasma steroids and breeding behavior. Plasma levels of testosterone (T), estradiol (E2), progesterone (P), and corticosterone (B) were assessed during pre-breeding courtship, while males built nests, while females...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1995.1002
更新日期:1995-03-01 00:00:00
abstract::This article is part of a Special Issue "Chemosignals and Reproduction". A rich variety of chemosignals have been identified that influence mammalian behaviour, including peptides, proteins and volatiles. Many of these elicit innate effects acting either as pheromones within species or allelochemicals between species....
journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2014.08.010
更新日期:2015-02-01 00:00:00
abstract::Given the high prevalence of early life stress (ELS) and the potential physiological dysregulation such experiences can lead to, this meta-analysis tested the relationship between ELS and cortisol. Search terms related to ELS and cortisol were entered in to PsycINFO and PubMed. Effect sizes were extracted for four out...
journal_title:Hormones and behavior
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.yhbeh.2017.12.014
更新日期:2018-02-01 00:00:00
abstract::Attention-deficit/hyperactivity disorder (ADHD) in adults is associated with significant impairment in many life activities and may thus increase the risk of chronic stress in everyday life. We compared adults with a DSM-IV ADHD diagnosis (n=28) with healthy controls (n=28) regarding subjective stress and amounts of s...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2008.12.004
更新日期:2009-03-01 00:00:00
abstract::Stress during pregnancy and the postpartum can influence the well-being of both the mother and her offspring. Prolonged elevated levels of glucocorticoids are associated with depression and we developed an animal model of postpartum depression/stress based on high levels of corticosterone (CORT) during the postpartum....
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2010.07.012
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abstract::We examined associations between prenatal exposure to perfluorohexane sulfonic acid (PFHxS), perfluoroheptanoic acid (PFHpA), perfluorononanoic acid (PFNA), and perfluorodecanic acid (PFDA) - and child behaviour (SDQ-total) and hyperactivity (sub-scale) at 5-9years of age in birth cohorts from Greenland and Ukraine. P...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2017.11.007
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abstract::The vertebrate hippocampus (HP) plays a critical role in the organization of memory. Estrogens alter synaptic morphology and function in the mammalian HP and may potentiate memory performance. Previous studies suggest that the songbird HP itself is a site of significant aromatase expression, intimating that local estr...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1998.1447
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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::Half a century has passed since the first report of the influence of odors on mice. Odors are known to influence behavior (signaling effect) and affect the physiology (primer effect) of mice. This review focuses on summarizing the primer effects found so far in female and male mice. Odors from conspecifics of the oppo...
journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2004.03.002
更新日期:2004-09-01 00:00:00
abstract::Physical inactivity and increased consumption of energy dense, high fat (HF) foods often leads to a state of positive energy balance. Regular exercise can facilitate the maintenance of a healthy body weight and mediate changes in dietary selection. Past studies using a two-diet choice (chow vs. HF) and voluntary wheel...
journal_title:Hormones and behavior
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doi:10.1016/j.yhbeh.2018.02.010
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abstract::Previous studies of changes in women's behavior during the menstrual cycle have offered insight into the motivations underpinning women's preferences for social cues associated with possible direct benefits (e.g., investment, low risk of infection) and indirect benefits (e.g., offspring viability). Here we sought to e...
journal_title:Hormones and behavior
pub_type: 临床试验,杂志文章
doi:10.1016/j.yhbeh.2005.03.010
更新日期:2005-09-01 00:00:00
abstract::Adolescence is a period during which many social behaviors emerge. One such behavior, flank marking, is a testosterone-modulated scent marking behavior that communicates dominance status between adult male Syrian hamsters. Testosterone modulates flank-marking behavior by altering neural transmission of vasopressin wit...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2006.06.006
更新日期:2006-09-01 00:00:00
abstract::Most nonhuman primate research on risk factors underlying vulnerability to stress has focused on early psychosocial experiences in various species of macaques. To test for genetic and experiential effects on emotional vulnerability in randomly bred squirrel monkeys, here we combined a paternal half-sibling analysis wi...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1999.1547
更新日期:1999-12-01 00:00:00
abstract::Relationships between testosterone plasma levels and evoked vocal responses of males of the leptodactylid frog Batrachyla taeniata from southern Chile were studied. Evoked vocal responses were elicited in the field with playbacks of a synthetic imitation of the conspecific advertisement call and variants of this signa...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1997.1366
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2014.06.017
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2008.01.014
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abstract::Fecal testosterone and cortisol levels were analyzed from six wild male muriquis (Brachyteles arachnoides) over a 19-month period at the Estação Biológica de Caratinga in Minas Gerais, Brazil, to investigate the hormonal correlates of seasonal sexual behavior and environmental conditions. Group mean testosterone level...
journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2018.07.013
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abstract::Attractivity is one aspect of female sexuality relevant for the understanding of male-female sexual interactions. In a previous study, it was shown that intact males were equally attracted to early androgenized, gonadally intact females as to normally developed, estrous females. The present study was designed to inves...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(86)90001-2
更新日期:1986-12-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2014.02.004
更新日期:2014-06-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2012.01.015
更新日期:2012-04-01 00:00:00
abstract::Androgens are often associated with assertive behavior; under what circumstances is this reflected in higher dominance rank? In this study of coresidential college women, androgens (total testosterone, free testosterone, and androstenedione) and estradiol were positively correlated with high self-regard in women (as m...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1995.1025
更新日期:1995-09-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.2001.1646
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2017.11.003
更新日期:2018-01-01 00:00:00
abstract::Previous studies have shown that melatonin is implicated in modulating learning and memory processing. Melatonin also exerts neuroprotective activities against Aβ-induced injury in vitro and in vivo. Neu-P11 (piromelatine, N-(2-(5-methoxy-1H-indol-3-yl)ethyl)-4-oxo-4H-pyran-2-carboxamide) is a novel melatonin (MT1/MT2...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2013.04.009
更新日期:2013-06-01 00:00:00
abstract::Previous studies in our laboratory have shown that estradiol and progesterone affect beta-endorphin and Met-enkephalin levels in specific brain regions and that these effects are diurnally controlled. The present investigation was conducted to evaluate the effects of estradiol and progesterone on pain latency and brai...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1996.0029
更新日期:1996-09-01 00:00:00