Special Issue: Highlights of SBN 2022
Horm Behav. 2024 Feb 5;160:105490. doi: 10.1016/j.yhbeh.2024.105490. Online ahead of print.NO ABSTRACTPMID:38320422 | DOI:10.1016/j.yhbeh.2024.105490 (Source: Hormones and Behavior)
Source: Hormones and Behavior - February 6, 2024 Category: Endocrinology Authors: Farrah N Madison Nora H Prior Brian C Trainor Source Type: research
Experimentally elevated corticosterone does not affect bacteria killing ability of breeding female tree swallows (Tachycineta bicolor)
In this study, we experimentally elevated circulating corticosterone, the main avian glucocorticoid, in free-living female tree swallows (Tachycineta bicolor) for one to two weeks to test its effects on immune modulation. Natural variation in bacteria killing ability (BKA), a measure of innate constitutive immunity, was predicted by the interaction between timing of breeding and corticosterone levels. However, experimental elevation of corticosterone had no effect on BKA. Therefore, even when BKA is correlated with natural variation in glucocorticoid levels, this relationship may not be causal. Experiments are necessary to...
Source: Hormones and Behavior - February 5, 2024 Category: Endocrinology Authors: David A Chang van Oordt Conor C Taff Monique A Pipkin Thomas A Ryan Maren N Vitousek Source Type: research
A hamster model for stress-induced weight gain
Horm Behav. 2024 Feb 1;160:105488. doi: 10.1016/j.yhbeh.2024.105488. Online ahead of print.ABSTRACTThis review addresses the translational relevance of animal models of stress and their effects on body weight. In humans, stress, whether chronic or acute, has often been associated with increased food intake and weight gain. In view of the current obesity epidemic, this phenomenon is especially relevant. Such observations contrast with reports with commonly used laboratory animals, especially rats and mice. In these species, it is common to find individuals gaining less weight under stress, even with potent social stressors....
Source: Hormones and Behavior - February 2, 2024 Category: Endocrinology Authors: Kevin M Moran Yvon Delville Source Type: research
Selective attention towards infants in nulliparous women across the menstrual cycle
Horm Behav. 2024 Feb 1;160:105492. doi: 10.1016/j.yhbeh.2024.105492. Online ahead of print.ABSTRACTResearch in women showed that testosterone is associated with decreased selective attention towards infant stimuli, which can be compensated for by oxytocin administration. In theory, caregiving behavior is thought to be mediated by oxytocin. Oxytocin binds to dopaminergic neurons and thus supposedly motivates aspects of caregiving through its influence on dopaminergic transmission. Most previous studies on caregiving behaviors were thereby performed in women under hormonal contraception to avoid hormonal fluctuations. Howeve...
Source: Hormones and Behavior - February 2, 2024 Category: Endocrinology Authors: Sarah K C Holtfrerich Esther K Diekhof Source Type: research
Social environment and anogenital distance length phenotype interact to explain testosterone levels in a communally rearing rodent: Part 2: The female side
Horm Behav. 2024 Jan 30;160:105486. doi: 10.1016/j.yhbeh.2024.105486. Online ahead of print.ABSTRACTTestosterone is known as a "male" hormone; however, females also synthetize testosterone, which influences female sexual and aggressive behavior. In female vertebrates, as in males, testosterone levels can vary seasonally. However, female testosterone levels may also be related with female anogenital distance (AGD) length phenotype (a proxy of prenatal androgen exposure), and the social group environment. We used data from a long-term rodent study (2009-2019) in a natural population of degus (Octodon degus) to examine the po...
Source: Hormones and Behavior - January 31, 2024 Category: Endocrinology Authors: Loreto A Correa Antonia Aspillaga-Cid Cecilia Le ón Carolyn M Bauer Juan Ram írez-Estrada Loren D Hayes Mauricio Soto-Gamboa Luis A Ebensperger Source Type: research
Leveraging the unique social organization of California mice to study circuit-specific effects of oxytocin on behavior
Horm Behav. 2024 Jan 27;160:105487. doi: 10.1016/j.yhbeh.2024.105487. Online ahead of print.ABSTRACTOxytocin is a versatile neuropeptide that modulates many different forms of social behavior. Recent hypotheses pose that oxytocin enhances the salience of rewarding and aversive social experiences, and the field has been working to identify mechanisms that allow oxytocin to have diverse effects on behavior. Here we review studies conducted on the California mouse (Peromyscus californicus) that shed light on how oxytocin modulates social behavior following stressful experiences. In this species, both males and females exhibit...
Source: Hormones and Behavior - January 28, 2024 Category: Endocrinology Authors: Alyssa A Lake Brian C Trainor Source Type: research
Social environment and anogenital distance length phenotype interact to explain testosterone levels in a communally rearing rodent: Part 1: The male side
Horm Behav. 2024 Jan 25;160:105479. doi: 10.1016/j.yhbeh.2024.105479. Online ahead of print.ABSTRACTIn vertebrates, male testosterone levels vary across the year being generally higher during the mating season relative to the offspring rearing season. However, male testosterone levels may also be associated with male anogenital distance (AGD) length (a proxy of prenatal androgen exposition), and influenced by the social group environment. In social species, it has been proposed that high levels of testosterone could be incompatible with the development of an amicable social environment. Thus, in these species, it is predic...
Source: Hormones and Behavior - January 26, 2024 Category: Endocrinology Authors: Loreto A Correa Antonia Aspillaga-Cid Carolyn M Bauer Danna Silva- Álvarez Cecilia Le ón Juan Ram írez-Estrada Mauricio Soto-Gamboa Loren D Hayes Luis A Ebensperger Source Type: research
From pathology to pleasure: Reframing mechanistic studies on same-sex sexual behavior in primates
Horm Behav. 2024 Jan 25;160:105476. doi: 10.1016/j.yhbeh.2024.105476. Online ahead of print.ABSTRACTSame-sex sexual behaviors (SSB) in primates have historically been studied as sexual perversions, evolutionary paradoxes, and hormone-driven pathologies. Researchers in recent decades have challenged these perspectives, yet some of the original biases still linger. In this paper, we examine how the study of endocrinological mechanisms in SSB has been influenced by the historical framework of pathology. Societal attitudes and cultural conceptions of human sexuality have led researchers to study SSB in primates as the outcome ...
Source: Hormones and Behavior - January 26, 2024 Category: Endocrinology Authors: Evan Cunningham Marcela E Ben ítez Source Type: research
In your CORT: Corticosterone and its receptors in the brain underlie mate choosiness in female Cope's gray treefrogs (Hyla chrysoscelis)
We report a large decrease in GR expression in the hindbrain and midbrain of females that were treated with the moderate dosage of CORT-the same treatment group that exhibited a dramatic increase in choosiness following CORT treatment. This association, however, does not appear to be causal, as only forebrain GR levels, which are not affected by CORT injection, are positively associated with variation in choosiness. No strong effects were found for MR. We discuss these findings and suggest future studies to test the influence of glucocorticoids on mate choice.PMID:38245919 | DOI:10.1016/j.yhbeh.2024.105477 (Source: Hormones and Behavior)
Source: Hormones and Behavior - January 21, 2024 Category: Endocrinology Authors: Mariana Rodriguez-Santiago Annika Ruppert Megan D Gall Kim Hoke Mark A Bee Alexander T Baugh Source Type: research
Early life adversity accelerates hypothalamic drive of pubertal timing in female rats with associated enhanced acoustic startle
Horm Behav. 2024 Jan 18;159:105478. doi: 10.1016/j.yhbeh.2024.105478. Online ahead of print.ABSTRACTEarly life adversity in the form of childhood maltreatment in humans or as modeled by maternal separation (MS) in rodents is often associated with an earlier emergence of puberty in females. Earlier pubertal initiation is an example of accelerated biological aging and predicts later risk for anxiety in women, especially in populations exposed to early life trauma. Here we investigated external pubertal markers as well as hypothalamic gene expression of pubertal regulators kisspeptin and gonadotropin-releasing hormone, to det...
Source: Hormones and Behavior - January 19, 2024 Category: Endocrinology Authors: Lauren Granata Michaela Fanikos Heather C Brenhouse Source Type: research
Hair cortisol and dehydroepiandrosterone and their associations with optimism and pessimism in older people
Horm Behav. 2024 Jan 8;159:105474. doi: 10.1016/j.yhbeh.2023.105474. Online ahead of print.ABSTRACTThe cumulative negative effects of prolonged Hypothalamic-Pituitary-Adrenal axis (HPA axis) activation are associated with several age-related diseases. Some psychological traits such as optimism and pessimism have been shown to be related to both health and the stress response, although their relationship with the HPA axis is inconclusive. More stable HPA axis biomarkers, such as hair samples of cortisol (HC) and dehydroepiandrosterone (HDHEA), would help to clarify the association between these psychological traits and HPA ...
Source: Hormones and Behavior - January 9, 2024 Category: Endocrinology Authors: Mariola Zapater-Fajar í Isabel Crespo-Sanmiguel Teresa Montoliu Vanesa Hidalgo Alicia Salvador Source Type: research
Gender minority stress and diurnal cortisol profiles among transgender and gender diverse people in the United States
Horm Behav. 2024 Jan 7;159:105473. doi: 10.1016/j.yhbeh.2023.105473. Online ahead of print.ABSTRACTThe field of behavioral neuroendocrinology has only begun to explore the lived experiences of transgender and gender diverse (TGD) people exposed to stigma. In light of escalating attacks and legislation targeting TGD people in the United States, it is crucial to examine the physiological pathways through which gender minority stressors become embodied, impact health, and contribute to health inequities. The Trans Resilience and Health Study included baseline data collection from fall 2019 to spring 2020 from a sample of 124 ...
Source: Hormones and Behavior - January 8, 2024 Category: Endocrinology Authors: L Zachary DuBois Jae A Puckett Dee Jolly Sally Powers Tian Walker Debra A Hope Richard Mocarski T Zachary Huit Brenna R Lash Natalie Holt Allura Ralston Makinna Miles A Capannola Clove Tipton Geeta Eick Robert-Paul Juster Source Type: research
Gender minority stress and diurnal cortisol profiles among transgender and gender diverse people in the United States
Horm Behav. 2024 Jan 7;159:105473. doi: 10.1016/j.yhbeh.2023.105473. Online ahead of print.ABSTRACTThe field of behavioral neuroendocrinology has only begun to explore the lived experiences of transgender and gender diverse (TGD) people exposed to stigma. In light of escalating attacks and legislation targeting TGD people in the United States, it is crucial to examine the physiological pathways through which gender minority stressors become embodied, impact health, and contribute to health inequities. The Trans Resilience and Health Study included baseline data collection from fall 2019 to spring 2020 from a sample of 124 ...
Source: Hormones and Behavior - January 8, 2024 Category: Endocrinology Authors: L Zachary DuBois Jae A Puckett Dee Jolly Sally Powers Tian Walker Debra A Hope Richard Mocarski T Zachary Huit Brenna R Lash Natalie Holt Allura Ralston Makinna Miles A Capannola Clove Tipton Geeta Eick Robert-Paul Juster Source Type: research
Androgen receptors rapidly modulate non-breeding aggression in male and female weakly electric fish (Gymnotus omarorum)
This study is the first demonstration of a direct and rapid androgen effect mediated via androgen receptors on non-breeding aggression. Elucidating the mechanisms involved in non-breeding aggression in this teleost model allows us to better understand potentially conserved or convergent neuroendocrine mechanisms underlying aggression in vertebrates.PMID:38154435 | DOI:10.1016/j.yhbeh.2023.105475 (Source: Hormones and Behavior)
Source: Hormones and Behavior - December 28, 2023 Category: Endocrinology Authors: Guillermo Vali ño Kent Dunlap Laura Quintana Source Type: research
Androgen receptors rapidly modulate non-breeding aggression in male and female weakly electric fish (Gymnotus omarorum)
This study is the first demonstration of a direct and rapid androgen effect mediated via androgen receptors on non-breeding aggression. Elucidating the mechanisms involved in non-breeding aggression in this teleost model allows us to better understand potentially conserved or convergent neuroendocrine mechanisms underlying aggression in vertebrates.PMID:38154435 | DOI:10.1016/j.yhbeh.2023.105475 (Source: Hormones and Behavior)
Source: Hormones and Behavior - December 28, 2023 Category: Endocrinology Authors: Guillermo Vali ño Kent Dunlap Laura Quintana Source Type: research
