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  • 1
    Electronic Resource
    Electronic Resource
    Neuroendocrine Pharmacology of Serotonergic (5-HT) Neurons (1991)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Pharmacology 31 (1991), S. 289-320 
    Details
    ISSN: 0362-1642
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pa.31.040191.001445
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of Isoproterenol on Synaptic Ribbons in Pinealocytes of the Rat and C57BL/6J Mouse (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of pineal research 7 (1989), S. 0 
    Details
    ISSN: 1600-079X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Synaptic ribbons (SR) in melatonin-deficient pinealocytes of the C57BIV6J mouse were quantitatively compared to SR in pinealocytes of the rat after β-adrenergic receptor activation by isoproterenol. Two populations of SR comprising synaptic spherules (SRsp) and synaptic rods (SRr) were described in both the mouse and the rat, but species differences existed in the ratio of SRr to SRsp. Isoproterenol caused a significant increase in frequency of SR of the rat but had little or no effect on SR populations in the mouse. It is unlikely that β-adrenergic receptors are absent on mouse pinealocytes or were not activated since isoproterenol elevated plasma renin concentrations indicating activation of β-adrenergic receptors. Furthermore the pineal of both species receives heavy sympathetic input. These findings indicate that the role and regulation of pinealocyte SR are complex and are functionally linked to β-adrenergic receptors as well as other mechanisms related to the production of melatonin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-079X.1989.tb00453.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Low doses of ipsapirone increase growth hormone but not oxytocin secretion in normal male and female subjects (1999)
    Springer
    Psychopharmacology 145 (1999), S. 99-104 
    Details
    ISSN: 1432-2072
    Keywords: Key words Oxytocin ; Growth hormone ; Ipsapirone ; Serotonin (5-HT) ; 5-HT1A receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: The present study investigated whether administration of a 5-HT1A receptor agonist would increase growth hormone (GH) and oxytocin levels in normal human subjects, and whether the responses would be modified according to the age and gender of the subjects. Methods: Ipsapirone (0.3 mg/kg body weight), or placebo was administered to 30 normal subjects (14 males, 19–74 years and 16 females, 22–69 years) using a randomized, double blind design. Results: Stimulation of GH secretion by ipsapirone was significantly greater in male compared to female subjects, with no apparent effect of age. Oxytocin secretion was not stimulated by ipsapirone compared to placebo in any of the groups. Conclusions: The effects of gender and age on the degree of stimulation of GH secretion by 5-HT1A agonists in human subjects differ from their effects on secretion of the hormones ACTH and cortisol. A higher dose of ipsapirone is required to stimulate oxytocin secretion in normal human subjects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002130051037
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    Paper (German National Licenses)
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