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001-es BibID:	BIBFORM030581
Első szerző:	Haller J.
Cím:	Compression of the pituitary stalk elicits chronic increases in CSF vasopressin, oxytocin as well as in social investigation and aggressiveness / J. Haller, G. B. Makara, I. Barna, K. Kovács, J. Nagy, M. Vecsernyés
Dátum:	1996
ISSN:	0953-8194
Megjegyzések:	The neurochemical and behavioural effects of a novel stereotaxic surgical method developed for interrupting the nerve fibres running through the rat pituitary stalk to the posterior pituitary gland was studied. The cerebrospinal fluid (CSF) vasopressin (AVP) and oxytocin (OT) content as well as changes in aggressiveness were measured in rats one week and one month after the surgical intervention. The main results are as follows: (1) the compression of the pituitary stalk elicits a chronic increase in water consumption, as well as in CSF vasopressin and oxytocin content; (2) the surgical intervention increased the frequency of clinch fighting after one week. The increase in aggressiveness accentuated after one month and, in addition, operated animals showed reduced scores of resting while exploratory and social behaviours increased; (3) there was a strong positive correlation between water consumption, vasopressin, and aggressiveness; (4) oxytocin changes showed a positive correlation with variation in social behaviour. The surgical intervention may serve as a model for lesions of the pituitary stalk and formation of ectopic neurohypophyses in humans.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban pituitary arginine vasopressin oxytocin aggression social behaviour diabetes insipidus egyetemen (Magyarországon) készült közlemény
Megjelenés:	Journal of Neuroendocrinology. - 8 : 5 (1996), p. 361-365. -
További szerzők:	Makara Gábor B. Barna I. Kovács K. (Budapest) Nagy J. (Budapest) Vecsernyés Miklós (1959-) (gyógyszertechnológus, endokrinológus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM031851
Első szerző:	László Ferenc A.
Cím:	Vasopressin pressor receptor-mediated activation of HPA axis by acute ethanol stress in rats / László F. A., Varga C., Pávó I., Gardi J., Vecsernyés M., Gálfi M., Morschl E., László F., Makara G. B.
Dátum:	2001
Tárgyszavak:	Orvostudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	American journal of physiology. Regulatory, integrative and comparative physiology. - 280 : 2 (2001), p. R458-R465. -
További szerzők:	Varga Csaba (orvos) Pávó Imre J. Gardi János Vecsernyés Miklós (1959-) (gyógyszertechnológus, endokrinológus) Gálfi Márta Morschl Éva László Ferenc Makara Gábor B.
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001-es BibID:	BIBFORM031998
035-os BibID:	PMID:9227842 WOS:A1997XH42600010
Első szerző:	Vecsernyés Miklós (gyógyszertechnológus, endokrinológus)
Cím:	Effect of posterior pituitary denervation (PPD) on prolactin (PRL) and alpha-melanocyte-stimulating hormone (alpha-MSH) secretion of lactating rats / Miklós Vecsernyes, Krisztina Krempels, Béla E. Toth, János Julesz, Gábor B. Makara, György M. Nagy
Dátum:	1997
Megjegyzések:	Previous data have clearly suggested that the posterior pituitary (PP), consisting of neural lobe (NL) and intermediate lobe (IL), has a role in the control of anterior pituitary PRL secretion. However, basic aspects of this regulatory mechanism like (1), the role of an intact hypothalamic innervation of the PP as well as (2) the site of production of previously found PRL releasing substance(s) have not yet been characterized. Denervation of the PP (PPD) is an effective method for having a selective lesion of the innervation of PP, indeed, PPD results in a disappearance of neurosecretory materials from NL and tyrosine hydroxylase (TH) immunoreactivity from IL, leaving blood supply of all three lobes intact. Blood samples were taken from freely moving sham an PP-denervated lactating rats before and after 4-h separation from their pups and during the suckling stimulus. PPD blocks separation-induced depletion but only attenuates suckling induced release of PRL. Furthermore, it doubles plasma level of alpha-MSH during the entire sampling period, which has been used as a marker for in vivo secretory activity of IL cells. Lack of the separation-induced depression in plasma PRL of PPD animals can be partially restored by normalizing the diabetes insipidus with treatment of a vasopressin analogue, 1-desamino-8-D-arginine-vasopressin (dDAVP). In contrast, dDAVP, neither alone nor in combination with oxytocin (OXY), can change PPD-induced elevation of plasma alpha-MSH as well as attenuation of PRL response induced by suckling. It is concluded that: (1) contribution of the THDA system parallel to the confirmed role in the regulation of alpha-MSH seems to be crucial for the depletion of plasma PRL induced by separation but not for the elevation due to suckling stimulus, (2) intact hypothalamic innervations of both NL and IL, regulating water intake and the secretion of alpha-MSH, respectively, are necessary for normal secretory responses of AL during lactation, (3) as well as for the presence of PRF activity in PP, (4) which does not solely responsible for suckling-induced PRL release. Therefore, an interplay between several substances produced by NIL of the pituitary gland must have been responsible for the intact regulation of PRL secretion during lactation.
Tárgyszavak:	Orvostudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban egyetemen (Magyarországon) készült közlemény Posterior pituitary denervation Prolactin a-MSH Lactating rats
Megjelenés:	Brain Research Bulletin 43 : 3 (1997), p. 313-319. -
További szerzők:	Krempels Krisztina Tóth E. Béla (1960-) (orvos) Julesz János Makara Gábor B. Nagy György M.
Pályázati támogatás:	13055 OTKA 20916 OTKA 2922 OTKA 16827 OTKA
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