Showing papers in "General and Comparative Endocrinology in 2023"

TL;DR: A relaxin-like gonad-stimulating peptide (RGP) in starfish was the first identified invertebrate gonadotropin, consisting of A- and B-chains as discussed by the authors .

TL;DR: The zebrafish is an optimal experimental model to study thyroid hormone (TH) involvement in vertebrate development as mentioned in this paper , which has enabled a more insightful analysis of TH molecular actions upon the organization and function of the brain, the retina, the heart, and the immune system.

TL;DR: In this article , the authors explored the co-variation between integrated cortisol levels, assessed non-invasively using faecal cortisol metabolites (FCMs), and 12 constitutive indices of innate, inflammatory, and adaptive immune functions, in wild roe deer living in three populations with previously known contrasting environmental conditions.

TL;DR: In this paper , two distinct prolactin-expressing cell types in Japanese medaka (Oryzias latipes), a euryhaline species, using single cell transcriptomics were characterized and explored the hypothesis that they represent spatially distinct cell clusters.

TL;DR: In this article , the suitability of biocompatible polymeric microparticles, a novel method for drug-administration, as a tool to manipulate hormones in small songbirds was investigated.

TL;DR: In this paper , a comparative analysis of endocrine profiles and gestation length data of captive pregnant black rhinoceros (Diceros bicornis), white and greater one-horned (GOH), and Ceratotherium simum (Rhinoceros unicornis) was performed.

TL;DR: In this paper , the changes in HPG axis-related genes in male medaka (Oryzias latipes) exposed to fiber-type microplastics were investigated.

TL;DR: In this paper , the authors localized the ACP peptide and transcript within a number of cells in the central nervous system, including two pairs of laterally positioned neurons in the protocerebrum of the brain and a few ventrally localized neurons within the pro- and mesothoracic regions of the fused thoracic ganglia.

TL;DR: In this paper , the melanocortin-2 receptor (Mc2r) of the elasmobranch, Rhincodon typus (whale shark; ws), was co-expressed with wsmrap1 in CHO cells, and the transfected cells were stimulated with alanine-substituted analogs of ACTH(1-24) at the message motif (H6F7R8W9) and the address motif (K15K16R17R18P19).

TL;DR: In this paper , the effects of yolk androgens during the prenatal period were studied in pigeons and the results indicated that embryos from different egg laying sequence differed in heart rate and prenatal development outcomes but this can only partially explain by their difference in maternal androgen levels.

TL;DR: In this article , the authors collected data from healthy manatees at Crystal River and Indian River Lagoon in Florida and assessed for adrenal hormones, proteins, glucose, and lipid content in plasma.

TL;DR: In this article , the role of miR-125b in the control of basic porcine ovarian granulosa cell functions was evaluated using RT-qPCR, trypan blue exclusion test, quantitative immunocytochemistry, XTT and TUNEL assays.

TL;DR: The authors investigated the molecular evolution and expression of the genes for prolactin and its receptor (PRLR) in an evolutionarily diverse sampling of syngnathid fishes to explore how the co-option of PRL for male pregnancy has impacted its evolution, and to clarify whether the PRL axis is also involved in regulating reproductive function in species with more rudimentary forms of male pregnancy.

TL;DR: In the American cockroach, Periplaneta americana, coding for peptides related to insulin and insulin-like growth factor, seven genes were found to have significant expression in the central nervous system as demonstrated by the polymerase chain reaction on reverse transcribed RNA as mentioned in this paper .

TL;DR: In this article , small integral membrane protein 20 (SMIM20) was found moderately expressed in adipose tissues, and its expression was gradually increased during the differentiation of chicken preadipocytes, suggesting that it may play an important role in chicken adipogenesis.

TL;DR: In this paper , the authors assess urban and rural differences in egg yolk bacterial killing ability (BKA), corticosterone (CORT), oxidative status (d-ROMs), and energy metabolites (free glycerol and triglycerides), and their association with female immune status and egg quality.

TL;DR: In this article , the consequences of an oxidative stress challenge to insulin compromised and control adult flies of different ages, varying the activation state of the Nrf2 pathway in flies, the Cap’n’collar C pathway.

TL;DR: In this paper , the effects of lipopolysaccharide on the expression of the neuropeptide kisspeptin and its receptor (Kiss1R) were investigated in 160 pubertal or adult mice at multiple time points.

TL;DR: In this article , the authors investigated the role of negative feedback regulation in the formation of dominance hierarchies in pairs of juvenile rainbow trout (Oncorhynchus mykiss) and determined how subordinate fish maintain elevated cortisol levels by testing the prediction that negative feedback and clearance mechanisms are impaired by chronic social stress.

TL;DR: In this paper , the authors tested if perceived predation and parasitism risks can induce any of these behavioral or physiological responses by exposing female red-winged blackbirds (Agelaius phoeniceus) to playbacks of two major nest threats, a predator (Cooper's hawk, Accipiter cooperii) and an obligate brood parasite (brown-headed cowbird; Molothrus ater), as well as two controls (harmless Eastern meadowlark, Sturnella magna; and silence).

TL;DR: In this paper , a group-specific EIA exhibiting cross-reactivity with 11,17-dioxoandrostane metabolites of cortisol most clearly reflected adrenocortical activity in response to pharmocological challenge with exogenous ACTH in both males and females.

TL;DR: In this article , the effects of the two isoforms of Kisspeptin on the reproductive regulation in sturgeon were successfully synthesized to explore the functional influence of the peptide on the sturgeons HPG axis.

TL;DR: In this article , the authors investigated whether changes in skeletal muscle insulin sensitivity and glucose uptake underlie the cortisol-mediated elevated blood glucose levels in zebrafish, and they found that chronic cortisol stimulation restricts glucose uptake and enhances the glycolytic capacity without affecting insulin responsiveness in Zebrafish skeletal muscle.

TL;DR: In this paper , the authors used an enzyme immunoassay (EIA) to perform a biological validation on samples collected from two males and six females in a wild population of Colobus vellerosus in response to three naturally occurring potential stressors.

TL;DR: In this article , the authors examined the tissue distribution of genes involved in HPI axis signaling and steroidogenesis in the Atlantic sturgeon (Acipenser oxyrinchus) and provided the first functional characterization of melanocortin 2 receptors (Mc2r).