Very interesting. I should come back to this.
Cross references: Hormones Amphioxus Hormones Lamprey HormonesMy comment:
Shark Hormones Teleost Hormones @
Searching for "salamander hormones" yielded:
PubMed = 857 http://www.ncbi.nlm.nih.gov/pubmed/?term=salamander+hormones
Google = 6,340,000 https://www.google.com/search?q=salamander+hormones&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=np&source=hp
The Action of Neurohypophysial hormones on the Water and Sodium Metabolism of Urodele Amphibians.
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The Neurohypophysial Hormones of Lungfishes and Amphibians.
Free PMC Article
Corticosterone phases a circadian water-drive response to prolactin in the spotted newt, Notopthalmus viridescens.
Effects of insulin insufficiency on forelimb and tail regeneration in adult Diemictylus viridescens.
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Early steroid metabolism in Xenopus laevis, Rana temporaria and Triturus vulgaris embryos.
Identification by immunofluorescence of prolactin- and somatotropin-producing cells in the pituitary gland of the Mexican axolotl (Ambystoma mexicanum, Shaw).
LH-RH neuron system of the newt by immunohistochemical study.
Responses of MSH and prolactin cells to 5-hydroxytryptophan (5-HTP) in amphibians and teleosts. http://www.ncbi.nlm.nih.gov/pubmed/6967354
Gut hormones in Salamandra salamandra. An immunocytochemical and electron microscopic investigation.
Slow synaptic responses in autonomic ganglia and the pursuit of a peptidergic transmitter.
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Comparative immunocytochemical localization of prolactin and somatotropin in the pituitaries of Lepidosiren paradoxa, Rana temporaria and Ambystoma mexicanum.
Hormone-induced ovulation in Ambystoma tigrinum: influence of prolactin and thyroxine.
Seasonal variation in pituitary gonadotropin in the adult male newt, Cynops pyrrhogaster pyrrhogaster, revealed by isoelectric focusing technique and radioreceptor assay.
http://www.ncbi.nlm.nih.gov/pubmed/6796397 Free full text
Effect of thyroid hormones on the switch from larval to adult hemoglobin synthesis in the salamander Pleurodeles waltlii.
Luteinizing hormone-releasing hormone involvement in the reproductive behavior of a male amphibian.
Water balance of five amphibian species at different stages and phases, as affected by hypophysial hormones.
Arginine vasotocin induces sexual behavior of newts by acting on cells in the brain.
Seasonal changes in plasma testosterone and 5 alpha-dihydrotestosterone levels in the adult male newt, Cynops pyrrhogaster pyrrhogaster.
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Immunohistochemical localization of corticotropin-releasing factor (CRF)-like immunoreactivity in the hypothalamus of the newt, Triturus cristatus.
Corticotropin-releasing factor (CRF) stimulates locomotor activity in intact and hypophysectomized newts (Amphibia).
Studies on the specificity of thyroid response to pituitary glycoprotein hormones.
Stress-induced inhibition of sexual behavior: corticosterone inhibits courtship behaviors of a male amphibian (Taricha granulosa).
Neuropeptides in the gastrointestinal canal of Necturus maculosus. Distribution and effects on motility.
Regulatory peptides (glucagon, somatostatin, substance P, and VIP) in the brain and gastrointestinal tract of Ambystoma mexicanum.
Androgen and estrogen levels in the plasma of Pleurodeles waltl, Michah., during the annual cycle. I. Male cycle.
Effects of permanent deafferentation of the anterior preoptic area on serum aldosterone levels in the crested newt (Triturus cristatus carnifex Laur.).
Stress-induced inhibition of reproduction: evidence of suppressed secretion of LH-RH in an amphibian.
Androgen and estrogen levels in the plasma of Pleurodeles waltl, Michah., during the annual cycle. II. Female cycle.
Arginine vasotocin immunoreactivity in hypothalamic and extrahypothalamic areas of an amphibian brain.
Multiple forms of gonadotropin-releasing hormone in amphibian brains.
Interrenal function in larval Ambystoma tigrinum. II. Control of aldosterone secretion and electrolyte balance by ACTH.
Amphibian terminal nerve: distribution revealed by LHRH and AChE markers.
Isolation of alpha-melanotropin from the pars intermedia of the larval amphibian, Ambystoma tigrinum.
The nervus terminalis in amphibians: anatomy, chemistry and relationship with the hypothalamic gonadotropin-releasing hormone system.
Brain arginine vasotocin concentrations related to sexual behaviors and hydromineral balance in an amphibian.
Detection of adrenocorticotropin-related and alpha-melanocyte-stimulating hormone-related substances in the anterior pituitary of larval and adult Ambystoma tigrinum (class: Amphibia).
Innervation of the pars intermedia and control of alpha-melanotropin secretion in the newt.
Developmental changes in the processing of ACTH in the anterior pituitary of the amphibian, Ambystoma tigrinum.
Effects of corticotropin-releasing factor (CRF) and opiates on amphibian locomotion.
Effects of courtship on brain gonadotropin hormone-releasing hormone and plasma steroid concentrations in a female amphibian (Taricha granulosa).
Corticotropin-releasing factor (CRF) antagonist suppresses stress-induced locomotor activity in an amphibian.
"Intracerebroventricular (icv) injections of corticotropin-releasing factor (CRF; 25 ng) given to male rough-skinned newts (Taricha granulosa) stimulated locomotor activity tested in a circular arena starting 35 min after the injection.
The CRF receptor antagonist, alpha-helical CRF9-41 (ahCRF; 250 or 500 ng), injected icv concurrently with CRF blocked CRF-induced locomotor activity. In contrast, icv injection of ahCRF had no effect on spontaneous locomotor activity.
Other studies examined the effect of ahCRF on the elevated locomotor activity that was observed when the animals were stressed (handled or placed in warm water). The CRF antagonist dose dependently attenuated the response to either handling or warm stress tested 2 hr after drug treatment.
We also examined the effect of the alpha 2-adrenergic agonist, clonidine, on spontaneous and CRF-induced locomotor activity. Clonidine injected icv dose dependently suppressed spontaneous locomotor activity but not CRF-induced locomotor activity.
These studies support the hypothesis that endogenous CRF is involved in mediating stress-induced locomotor activity and indicate that the effects of CRF on locomotor activity are independent of activation of the alpha 2-adrenergic system."
112 Related citations:
This might be relevant to Boys without Fathers , but I'm not going to follow up on it right away.
The origin of the luteinizing hormone-releasing hormone (LHRH) neurons in newts (Cynops pyrrhogaster): the effect of olfactory placode ablation.
Sexually dimorphic concentrations of arginine vasotocin in sensory regions of the amphibian brain.
Peripheral projections of nervus terminalis LHRH-containing neurons in the tiger salamander, Ambystoma tigrinum.
Effects of prolactin, growth hormone, and triiodothyronine on prolactin receptors in larval and adult tiger salamanders (Ambystoma tigrinum).
Multiple embryonic origins of gonadotropin-releasing hormone (GnRH) immunoreactive neurons.
Antibodies against different forms of GnRH distinguish different populations of cells and axonal pathways in a urodele amphibian, Taricha granulosa.
Membrane receptors for corticosterone: a mechanism for rapid behavioral responses in an amphibian.
Corticotropin-releasing factor enhances locomotion and medullary neuronal firing in an amphibian.
Neuromodulatory effects of gonadotropin releasing hormone on olfactory receptor neurons.
"The terminal nerve is an anterior cranial nerve that innervates the lamina propria of the chemosensory epithelia of the nasal cavity.
The function of the terminal nerve is ambiguous, but it has been suggested to serve a neuromodulatory role. We tested this hypothesis by exposing olfactory receptor neurons from mudpuppies (Necturus maculosus) to a peptide, gonadotropin releasing hormone (GnRH), that is found in cells and fibers of the terminal nerve. We used voltage-clamped whole-cell recordings to examine the effects of 0. 5-50 micrometer GnRH on voltage-activated currents in olfactory receptor neurons from epithelial slices.
We found that GnRH increases the magnitude, but does not alter the kinetics, of a tetrodotoxin-sensitive inward current. This increase in magnitude generally begins 5-10 min after initial exposure to GnRH, is sustained for at least 60 min during GnRH exposure, and recovers to baseline within 5 min after GnRH is washed off. This effect occurred in almost 60% of the total number of olfactory receptor neurons examined and appeared to be seasonal: approximately 67% of neurons responded to GnRH during the courtship and mating season, compared with approximately 33% during the summer, when the sexes separate. GnRH also appears to alter an outward current in the same cells.
Taken together, these data suggest that GnRH increases the excitability of olfactory receptor neurons and that the terminal nerve functions to modulate the odorant sensitivity of olfactory receptor neurons."
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7alpha-Hydroxypregnenolone acts as a neuronal activator to stimulate locomotor activity of breeding newts by means of the dopaminergic system.
Brainstem reticulospinal neurons are targets for corticotropin-releasing factor-Induced locomotion in roughskin newts.
http://www.ncbi.nlm.nih.gov/pubmed/19968991 Free PMC Article
SubC: Salamander Hormones
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