Results 131 to 140 of about 1,637 (175)

Development of vasotocin pathways in the bullfrog brain

Cell and Tissue Research, 1994
The brain of adult bullfrogs (Rana catesbeiana) contains six populations of cells which are immunoreactive for the neurohypophysial peptide arginine vasotocin (AVT). It is unknown when some of these cell populations first appear during development and when the sexual differences in AVT distribution first become apparent.
openaire   +2 more sources

Identification of Vasotocin-Like Immunoreactivity in Chromaffin Cells of the Frog Adrenal Gland: Effect of Vasotocin on Corticosteroid Secretion*

Endocrinology, 1989
The presence of neurohypophyseal nonapeptides in the adrenal gland of nonmammalian vertebrates and the possible action of these regulatory peptides on corticosteroid secretion have never been investigated. We have applied the indirect immunofluorescence technique to examine whether vasotocin (AVT) and/or mesotocin (MT) are located in frog adrenal ...
A, Larcher, C, Delarue, S, Idres, H, Lefebvre, M, Feuilloley, F, Vandesande, G, Pelletier, H, Vaudry   +7 more
openaire   +2 more sources

Regulation of the avian kidney by arginine vasotocin

General and Comparative Endocrinology, 2006
Nonapeptides secreted by the neurohypophysis have important roles in vertebrate cardio-fluid homeostasis. In birds, those peptides include mesotocin (the representative of the neutral, or oxytocin-like, nonapeptide family) and vasotocin (the representative of the basic, or vasopressin-like, hormones).
openaire   +2 more sources

The natriuretic action of [4-Leucine]-arginine-vasotocin

Experientia, 1973
[Leu4]-Arginin-vasotocin wirkt so wohl an Katzen (Chloralose-Narkose, Mannit-Diurese) als auch an wachen Ratten (mit 0.9%-iger NACl-Losung belastet) und wachen nicht vorbehandelten Hunden natriuretisch und diuretisch.
J H, Cort, K M, Strub, G, Häusler, J, Rudinger   +3 more
openaire   +2 more sources

Arginine Vasotocin: Effects on Development of Reproductive Organs

Science, 1974
Immature 25-day-old mice were injected daily with 1 microgram of arginine vasotocin for 3 or 4 days and killed 24 hours after the last injection. The ovaries were 30 percent smaller in treated females than in controls. The ventral prostates and accessory organs (seminal vesicles and coagulating glands) were less than half the size of these structures ...
M K, Vaughan, G M, Vaughan, D C, Klein
openaire   +2 more sources

Melatonin, vasotocin and isotocin as biomarkers of the condition of fish

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2010
The environmental changes interfere with vertebrate endocrine systems. The endocrine biomarkers are used to indicate the condition of both free -ranging and farmed animals. The aim of this study was to show an impact of environmental changes on arginine vasotocin (AVT), isotocin (IT) and melatonin (MEL) in selected fish species.
Kulczykowska, Ewa, Gozdowska, Magdalena, Martos-Sitcha, Juan Antonio, Kalamarz, Hanna, Nietrzeba, M., Mancera, Juan Miguel, Martínez-Rodríguez, Gonzalo   +6 more
openaire   +2 more sources

The Mechanism of Action of Vasotocin in the Mammalian Brain

1979
Publisher Summary This chapter focuses on the mechanism of action of vasotocin in the mammalian brain. Presence of the nonapeptide hormone arginine-vasotocin (AVT) in the pineal gland of all mammals so far investigated, including man as well as the presence of the nonapeptide hormone lysine-vasotocin in the pineal gland of the pig have been ...
openaire   +2 more sources

Administration of Arginine-Vasotocin (AVT) to Human Subjects

1979
Publisher Summary This chapter outlines the study of administration of arginine-vasotocin (AVT) to human subjects. As in mammals, synthetic arginine-vasotocin (AVT) produces marked effects on the secretion of the anterior pituitary and on sleep induction, especially when intraventricularly administered, but also intraperitoneally or intravenously, so
M, Coculescu, L, Simionescu, A, Cristoveanu, A, Serbänescu, V, Matulevicius, F, Grigorescu, E, Temeli   +6 more
openaire   +2 more sources

Urinary Clearance of Arginine Vasotocin in Pekin Ducks

General and Comparative Endocrinology, 1995
To quantify the renal excretion of arginine vasotocin (AVT) in birds, synthetic AVT was infused into conscious Pekin ducks at rates of 0.03, 0.10, and 0.30 ng/kg/min for 30 min and the relationships between plasma and urine AVT concentrations were monitored by radioimmunoassay.
openaire   +2 more sources

Vascular effects of arginine vasotocin in toad skin

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1993
Fluid balance in amphibians is regulated, in large part, by arginine vasotocin (AVT). One important action of this hormone is to facilitate water uptake by increasing the water permeability of the skin. Cutaneous blood flow also affects water uptake, but the effects of AVT on skin perfusion are unknown.
openaire   +2 more sources