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  • Articles: DFG German National Licenses  (2)
  • Yawning  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Yawning is elicited by D2 dopamine agonists but is blocked by the D1 antagonist, SCH 23390 (1987)
    Springer
    Psychopharmacology 91 (1987), S. 330-333 
    Details
    ISSN: 1432-2072
    Keywords: Yawning ; D1 and D2 DA receptors ; DA agonists ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The subtype of dopamine (DA) receptors mediating the yawning response to DA agonists was determined in rats. Yawning was elicited both by the mixed D1–D2 agonist apomorphine and by the specific D2 agonist LY 171555, but not by the selective D1 agonist SKF 38393. Both apomorphine- and LY 171555-induced yawning were antagonized not only by the selective D2 antagonist sulpiride but, unexpectedly, also by the selective D1 antagonist SCH 23390. The results suggest that DA receptors mediating the yawning response are of the D2 type, and that these receptors are connected with D1 receptors in such a way that the blockade of the latter results in the functional inactivation of the former.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00518186
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Oxytocin-induced penile erection and yawning in male rats: effect of neonatal monosodium glutamate and hypophysectomy (1989)
    Springer
    Psychopharmacology 97 (1989), S. 383-387 
    Details
    ISSN: 1432-2072
    Keywords: Penile erection ; Yawning ; Hypophysectomy ; Monosodium glutamate ; Oxytocin ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Penile erection and yawning induced by the intracerebroventricular (ICV) injection of oxytocin (10–1000 ng) was studied in hypophysectomized rats and in rats neonatally treated with monosodium glutamate (MSG), a treatment that depletes hypothalamic opiomelanocorticotropinderived peptides without altering their pituitary and circulating concentration. Oxytocin effect was strongly reduced by hypophysectomy, but not by neonatal MSG. Testosterone replacement (50 μ/kg/day for 23 days) partially reversed the effect of hypophysectomy on penile erection, but not on yawning. The present results suggest that oxytocin does not induce penile erection and yawning by releasing an ACTH-derived peptide from hypothalamic opiomelanotropinergic neurons, and that the pituitary gland exerts a permissive role on the expression of the above behavioural responses induced by oxytocin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00439455
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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