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Prolactin human

Chorionic Somatomammotropin. Three genes encode human chorionic somatomammotropin [11085-36-2] (hCS). These are located within a cluster of genes on human chromosome 17 which code for pituitary growth hormone [12629-01 -5] (GH-N), placental GH [109675-94-7J (GH-V), and three hCS molecules, ie, hCS-A, hCS-B, and hCS-V (1 3), also referred to as human placental lactogens. All of these molecules ate closely related to GH in stmcture (Fig. 1). Placental lactogens also exist in rodents and mminants however, these hormones are more closely related to prolactin than GH. [Pg.180]

Takahara J, Yunoki S, Yakushiji W, et ah Stimulatory effects of gamma-hydroxybutyric acid on growth hormone and prolactin release in humans. J Clin Endocrinol Metab 44 1014-1017, 1977... [Pg.267]

Control (inhibition) of prolactin release Tuberoinfundibular tract from A12 in the arcuate nucleus of the median eminence to pituitary Humans Hypoprolactaemia Humans Hyperprolactaemia Galactorrhoea Amenorrhoea D2 ... [Pg.154]

There is a recent clinical report by Emil Coeearo and colleagues that I think might be relevant to the kind of thing you have done in rats. They have been looking at endocrine responses to fenfluramine in humans as a marker of central serotonergic function. And they have observed an increase in serum prolactin concentration, which is felt to be due to serotonin release. They reported that, in subjects who received a seeond dose of fenfluramine within 12 days after the first dose, that there was a blunted response to serum prolactin. [Pg.155]

If PCP produces its multitude of effects by activating PCP (sigma) receptors, then chronic exposure to agonists should elicit the development of tolerance. Tolerance to plasma prolactin suppression by PCP is observed in rats following daily administration for 28 days (Quirion et al. 1982). Chronic PCP treatment has been also shown to reduce the number of PCP sites (receptors) in rodent brains (Quiriun et al. 1983). Behavioral studies have documented the development of tolerance to and dependence on PCP (Balster and Woolverton 1980 Flint and Ho 1980). A tolerance syndrome develops in humans, in which the user is compelled to increase his intake of drug (Jain et al. 1977). [Pg.143]

In addition to the classical stress hormones already reviewed, several other hormones are augmented in response to stress. Stress-induced prolactin release is one of the most frequently studied examples. There is no doubt about the causal relationship between stress and increased pituitary prolactin release, but the biological meaning is much less clear (G2). This phylogenetically old hormone has been shown to have more than 85 different functions in all vertebrate species. However, besides its role in the induction of maternal lactogenesis, the physiological importance of prolactin is at present not fully established. Experimental and clinical evidence supports the view that prolactin is also an immunoregulating hormone (M44, R18). Prolactin receptors are present on human T and B lymphocytes (R18), and T lymphocytes depend on prolactin for maintenance of immunocompetence (B19). In addition, it has been shown that prolactin is able to influence the devel-... [Pg.93]

Treuer, K. von, Norman, T. R. 8r Armstrong, S. M. (1996). Overnight human plasma melatonin, cortisol, prolactin, TSH, under conditions of normal sleep, sleep deprivation, and sleep recovery. J. Pineal Res. 20, 714. [Pg.312]

Sabharwal, P. et al., Prolactin synthesized and secreted by human peripheral blood mononuclear cells An autocrine growth factor for lymphoproliferation, Proc. Nat. Acad. Sci., 89, 7713, 1992. [Pg.521]

A vast number of hormones and neurotransmitters are synthesized from simple structural units including chains of amino acids. Among the amino acid based hormones are comparatively large protein molecules such as prolactin, growth hormone and insulin, and shorter chains of amino acids which may form peptide hormones, such as oxytocin and vasopressin. Protein based hormones are essential for metabolism, growth and some components of reproduction. However, evidence for specific influences of these compounds on human behavior is limited. [Pg.145]

Nissen, E., Uvnas-Moberg, K., Svensson, K., Stock, S, Widstrom, A. M., and Winberg, J. 1996. Different patterns of oxytocin, prolactin but not cortisol release during breast feeding in women delivered by caesarean section or by the vaginal route. Early Human Development, in press. [Pg.161]

That prolactin is produced in highly variable amounts in different human beings is indicated by the fact that its urinary excretion varies tremendously from individual to individual. In five women the urinary prolactin excretion per 24 hours varied from 52 to 210 units when tested on pigeons by intravenous injection. A series of 12 males excreted from 0 to 305 units in 24 hours when tested in the same manner.31 Omitting the individual who exhibited a zero value, the variation was still nearly 40-fold. [Pg.128]

Plasma prolactin levels are reduced with acute treatment and remain suppressed after 28 days of chronic treatment (Murphy et al. 1998). With acute treatment, no effects are seen on plasma luteinizing hormone or testosterone levels. However, chronic dietary 5% ginseng increases testosterone levels in male rats (Fahim et al. 1982). Chronic ginsenosides do not alter posterior pituitary hormones oxytocin and vasopressin (Zierer 1991). Similarly, human males administered ginseng extract showed an increase in plasma testosterone, dihydrotestosterone, follicle-stimulating hormone, and luteinizing hormone, but a decrease in prolactin (Salvati et al. 1996). [Pg.187]

Neuroendocrine effects DMT causes a transient increase in release of several hormones. In humans intravenously administered DMT (0.4 mg/kg), increases are seen in j8-endorphin, corticotrophin, prolactin, cor-... [Pg.368]

Armario A, Marti 0, Molina T, de Pablo J, Valdes M. (1996). Acute stress markers in humans response of plasma glucose, cortisol, and prolactin to two examinations differing in the anxiety they provoke. Psychoneuroendocrinology. 21(1) 17-24. [Pg.503]

Demisch L, Neubauer M. (1979). Stimulation of human prolactin secretion by mescaline. Psychopharmacology (Berlin). 64(3) 361-63. [Pg.539]

D5 has slightly different properties than D4, and it does not have any estrogenic activity [289]. It does, however, also have adverse effects on the reproductive system, much like D4, but also on the adipose tissue, bile production, and even immune system due to D5 s effect of reducing the prolactin levels [291]. In addition, it was determined that D5 causes a significant increase in uterine tumors in rats after a 160 ppm exposure. However, it is proposed that the tumors occur in rats through a mechanism that would not affect humans [291]. D5 also acts as a dopamine agonist and it can cause adverse effects on the nervous system in humans [291]. For exposures to D6 in rats, an increase in liver and thyroid mass and reproductive effects were observed [292]. [Pg.287]

Sassin, J. F., Frantz, A. G., Weitzman, E. D., and Kapen, S., Human prolactin 24-hour pattern with increased release during sleep. Science XTl, 1205-1207 (1972). [Pg.41]


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