Comparative analysis of reproductive cycles in female Persian gazelle (Gazella subgutturosa subgutturosa) (Central Asia) and sand gazelle (Gazella subgutturosa marica) (Arabian Peninsula).

abstract：:The development and dynamics of TSH and GTH cells were studied immunohisto- and immunocytochemically in the salamander Hynobius retardatus, which had been reported to show neoteny in a specific environment and a precocious development and maturation of testis in goitrogen-treated larvae. Pituitary glands from normally...

journal_title：General and comparative endocrinology

authors： Yamaguchi M,Tanaka S,Wakahara M

更新日期：1996-12-01 00:00:00

abstract：:In order to delineate further the molecular evolution of the renin-angiotensin system in vertebrates, angiotensin I (ANG I) has been isolated after incubation of plasma and kidney extracts of emu (Dromiceus novaehollandiae), axolotl (Ambystoma mexicanum), and sea lamprey (Petromyzon marinus). The identified sequences ...

journal_title：General and comparative endocrinology

authors： Takei Y,Joss JM,Kloas W,Rankin JC

更新日期：2004-02-01 00:00:00

abstract：:Baleen whales are vulnerable to environmental impacts due to low fecundity, capital breeding strategies, and their reliance on a large amount of prey resources over large spatial scales. There has been growing interest in monitoring health and physiological stress in these species but, to date, few measures have been ...

journal_title：General and comparative endocrinology

authors： Mingramm FMJ,Keeley T,Whitworth DJ,Dunlop RA

更新日期：2020-05-15 00:00:00

abstract：:Insulin-like androgenic gland hormone-binding protein (IAGBP) has been investigated in crustaceans in vitro. However, the relationship between IAGBP and its putative binding protein partner insulin-like androgenic gland hormone (IAG) has not been studied at the transcriptional level in vivo. In the current study, we c...

journal_title：General and comparative endocrinology

authors： Li F,Bai H,Xiong Y,Fu H,Jiang S,Jiang F,Jin S,Sun S,Qiao H,Zhang W

更新日期：2015-05-15 00:00:00

abstract：:The neuroactive steroids which are synthesized in the brain and nervous system are known as "Neurosteroids". These steroids have crucial functions such as contributing to the myelination and organization of the brain connectivity. Under the stressful circumstances, the concentrations of neurosteroid products such as a...

journal_title：General and comparative endocrinology

authors： Rahmani B,Ghasemi R,Dargahi L,Ahmadiani A,Haeri A

更新日期：2016-01-01 00:00:00

abstract：:Long-term administration of L-thyroxine (T4) in the wax bill (lal munia) inhibited the current gonad development cycle, and the increase in gonadal volume in the second cycle was suppressed only by higher concentrations. Gonadal inhibition by high but not by low doses of L-T4 was associated with a failure in the devel...

journal_title：General and comparative endocrinology

authors： Thapliyal JP,Gupta BB

更新日期：1984-07-01 00:00:00

abstract：:Undifferentiated spermatogonia (Aund) or spermatogonial stem cells (SSCs) are committed to the establishment and maintenance of spermatogenesis and fertility throughout a male's life and are located in a highly specialized microenvironment called niche that regulates their fate. Although several studies have been deve...

journal_title：General and comparative endocrinology

authors： Costa GMJ,Sousa AL,Figueiredo AFA,Lacerda SMSN,França LR

更新日期：2019-03-01 00:00:00

abstract：:Considerable research has been conducted on the interrelationships of the steroid hormone testosterone and reproductive behavior in seasonally breeding birds. In species in which males provide paternal care, males experience a peak in testosterone secretion that coincides with territory establishment and pair bonding,...

journal_title：General and comparative endocrinology

authors： Lynn SE

更新日期：2008-07-01 00:00:00

abstract：:The present investigation was designed to (1) determine if atrial natriuretic factor gene expression occurs within invertebrates as well as within vertebrates; (2) determine whether the product of this gene expression is the 126-amino-acid atrial natriuretic factor prohormone or some other molecular species; and (3) e...

journal_title：General and comparative endocrinology

authors： Poulos JE,Gower WR Jr,Friedl FE,Vesely DL

更新日期：1995-10-01 00:00:00

abstract：:Melanophore-stimulating hormone (MSH) release from the pars intermedia of the pituitary gland is probably regulated by multiple factors of hypothalamic origin. We have examined a number of potential regulatory factors for their effects on MSH release from the amphibian Xenopus laevis. Serotonin and acetylcholine have ...

journal_title：General and comparative endocrinology

authors： Verburg-van Kemenade BM,Jenks BG,van Overbeeke AP

更新日期：1986-09-01 00:00:00

abstract：:The binding of 125I-labeled ovine prolactin (oPRL) to membrane preparations of tissue from freshwater-adapted tilapia (Sarotherodon mossambicus) was examined. Liver, ovary, and testis showed a relatively high specific binding (5-10%). A lower specific binding occurred consistently in intestine and gill tissue, and inc...

journal_title：General and comparative endocrinology

authors： Edery M,Young G,Bern HA,Steiny S

更新日期：1984-10-01 00:00:00

abstract：:Key peptide hormones involved in the control of appetite in vertebrates were identified, their genes characterized and their regulation studied in Atlantic salmon: two agouti-related proteins (AgRP), cocaine- and amphetamine-regulated transcript (CART) and neuropeptide Y (NPY). The AgRP-1 and AgRP-2 genes encode prepr...

journal_title：General and comparative endocrinology

authors： Murashita K,Kurokawa T,Ebbesson LO,Stefansson SO,Rønnestad I

更新日期：2009-06-01 00:00:00

abstract：:This article is focused on the effect of specific phase relation of serotonergic and dopaminergic oscillations on the gonadal responses of different avian species. These species include (i) summer breeding birds - Red headed bunting (exhibiting post-reproductive absolute photorefractoriness) and Indian Weaver bird (wh...

journal_title：General and comparative endocrinology

authors： Chaturvedi CM,Yadav S

更新日期：2013-09-01 00:00:00

abstract：:Plasma levels of testosterone and corticosterone were measured in free-living male bush warblers captured on their breeding ground at different times of the breeding season. Their territoriality was also estimated from their singing response to song playbacks. The pattern of change detected in the levels of plasma tes...

journal_title：General and comparative endocrinology

authors： Wada M,Shimizu T,Kobayashi S,Yatani A,Sandaiji Y,Ishikawa T,Takemure E

更新日期：1999-12-01 00:00:00

abstract：:Intraperitoneal injection of CaCl2 in intact, sham-stanniectomized, and stanniectomized American eels, Anguilla rostrata (LeSueur), resulted in a rapid elevation of plasma calcium level which was more marked and of longer duration in the stanniectomized eels. The same treatment reduced whole body calcium influx (JinCa...

journal_title：General and comparative endocrinology

authors： Fenwick JC,Brasseur JG

更新日期：1991-06-01 00:00:00

abstract：:The effects of dopamine administration on the adrenal gland of a lizard, Podarcis sicula, are described. Dopamine (0.7mg/100g body wt/day for 4 consecutive days) raised plasma ACTH and corticosterone levels (ACTH: from the basal level of 4.40+/-0.05-7.30+/-0.08pg/ml 24h after the fourth dopamine injection; corticoster...

journal_title：General and comparative endocrinology

authors： Capaldo A,Laforgia V,Sciarrillo R,De Falco M,Valiante S,Gay F,Virgilio F,Varano L

更新日期：2004-01-01 00:00:00

abstract：:Prolactin (PRL) and two variants of growth hormone (GH), purified from pituitaries of striped bass (Morone saxatilis) and its hybrid with white bass (M. saxatilis x M. chrysops) by gel filtration chromatography under alkaline conditions followed by reversed-phase high pressure liquid chromatography, appear similar bet...

journal_title：General and comparative endocrinology

authors： Jackson LF,Swanson P,Duan C,Fruchtman S,Sullivan CV

更新日期：2000-01-01 00:00:00

abstract：:Human pro-IGF-I Eb-peptide (hEb) and rainbow trout pro-IGF-I Ea-4-peptide (rtEa-4) have recently been shown to share unique biological activities [Gen. Comp. Endocrinol. 126 (2002) 342; Cell. Exp. Cell. Res. 280 (2002) 75]. To further understand the action mechanism of these proteins, we studied the binding properties...

journal_title：General and comparative endocrinology

authors： Kuo YH,Chen TT

更新日期：2003-06-15 00:00:00

abstract：:Progesterone is believed to have a suppressive or inhibitory role in regulating androgen-dependent sex behaviors in male mammals and birds. Previous studies in this laboratory have revealed that in the little striped whiptail lizard (Cnemidophorus inornatus), progesterone (P) can stimulate sex behavior in a proportion...

journal_title：General and comparative endocrinology

authors： Lindzey J,Crews D

更新日期：1992-04-01 00:00:00

abstract：:Plasma and gonadal levels of several gonadal steroids (testosterone, 11-ketotestosterone, androstenedione, 11 beta-hydroxyandrostenedione, 17 beta-estradiol, and estrone) were measured by RIA in the protandrous seabass, Lates calcarifer, throughout an annual reproductive cycle. Twenty to 25 fish were killed every mont...

journal_title：General and comparative endocrinology

authors： Guiguen Y,Jalabert B,Thouard E,Fostier A

更新日期：1993-12-01 00:00:00

abstract：:We investigated the effect of several potential carbohydrate secretagogues, amino acids, a ketoacid, and potassium chloride on insulin, glucagon, and somatostatin release from the in vitro perfused Brockmann body of channel catfish (Ictalurus punctatus). Mannose (15 mM) stimulated the release of insulin and somatostat...

journal_title：General and comparative endocrinology

authors： Ronner P,Scarpa A

更新日期：1987-03-01 00:00:00

abstract：:Methyl farnesoate (MF) stimulation of ecdysteroid secretion by Y-organs of the crab, Cancer magister, is demonstrated. Isolated Y-organs that were incubated with a mandibular organ (MO) secreted significantly higher levels of ecdysteroids into the medium when compared to those incubated in the absence of a MO. MOs sec...

journal_title：General and comparative endocrinology

authors： Tamone SL,Chang ES

更新日期：1993-03-01 00:00:00

abstract：:The rainbow trout (Oncorhynchus mykiss) ovarian gonadotropin (GTH II) receptor was solubilized by extraction with the nonionic detergent 1% Triton X-100 in the presence of 20% glycerol. The hormone-binding characteristics of the soluble receptors were similar to those of membrane-bound receptors: the Scatchard plot of...

journal_title：General and comparative endocrinology

authors： Quesnel H,Breton B

更新日期：1993-09-01 00:00:00

abstract：:We have examined the distribution and physiological effects of three evolutionarily and sequence-related neuropeptides in Rhodnius prolixus. These neuropeptides, adipokinetic hormone (RhoprAKH), corazonin (CRZ) and adipokinetic hormone/corazonin-related peptide (RhoprACP) are present in distinct, non-overlapping neuro...

journal_title：General and comparative endocrinology

authors： Patel H,Orchard I,Veenstra JA,Lange AB

更新日期：2014-01-01 00:00:00

abstract：:To study the expression of four estrogen receptor genes (erα1, erα2, erβ1, erβ2) of female rainbow trout (Oncorhynchus mykiss) during first ovarian development, trouts were sampled from different ovarian stages. Serum E2 (estradiol) was measured by ELISA and estrogen receptors mRNA expression were examined by qRT-PCR....

journal_title：General and comparative endocrinology

authors： Hou ZS,Wen HS,Li JF,He F,Li Y,Tao YX

更新日期：2018-04-01 00:00:00

abstract：:In insects, especially phytophagous insects, feeding behavior occurs at a regular frequency. Although a number of physiological studies have revealed various causal factors leading to feeding behavior in insects, little has been demonstrated regarding the regulatory mechanisms underlying insect feeding behavior. To co...

journal_title：General and comparative endocrinology

authors： Nagata S,Morooka N,Matsumoto S,Kawai T,Nagasawa H

更新日期：2011-05-15 00:00:00

abstract：:Perchlorate, an environmental contaminant, disrupts normal functioning of the thyroid. We previously showed that perchlorate disrupts behavior and gonad development, and induces external morphological changes in a vertebrate model organism, the threespine stickleback. Whether perchlorate alters these phenotypes via a ...

journal_title：General and comparative endocrinology

authors： Petersen AM,Dillon D,Bernhardt RR,Torunsky R,Postlethwait JH,von Hippel FA,Loren Buck C,Cresko WA

更新日期：2015-01-01 00:00:00

abstract：:The growth hormone (GH) gene has been characterized for a number of fishes and used to establish phylogenetic relationships and as a candidate gene for studies of genetic variation in connection with growth traits. In this study, we report the genomic structure of Nibea coibor GH (designated as ncGH) including its 5'-...

journal_title：General and comparative endocrinology

authors： Zhang D,Shao Y,Jiang S,Li J,Xu X

更新日期：2009-09-15 00:00:00

abstract：:Birds use both the corticosterone stress response and immune system to meet physiological challenges during exposure to adverse climatic conditions. To assess the stress level and immune response of the Asian Great Bustard during conditions of severe winter weather, we measured fecal corticosterone (CORT) and Immunogl...

journal_title：General and comparative endocrinology

authors： Liu G,Hu X,Kessler AE,Gong M,Wang Y,Li H,Dong Y,Yang Y,Li L

更新日期：2018-05-15 00:00:00

abstract：:The widely accepted paradigm that epoxidized methyl farnesoates ("juvenile hormones," JHs) are the principal sesquiterpenoid hormones regulating insect metamorphosis was assessed in Drosophila melanogaster. GC-MS analysis of circulating methyl farnesoids during the mid to late 3rd instar showed that methyl farnesoate ...

journal_title：General and comparative endocrinology

authors： Jones G,Teal P,Henrich VC,Krzywonos A,Sapa A,Wozniak M,Smolka J,Jones D

更新日期：2013-02-01 00:00:00