Wyniki wyszukiwania

1

Prolactin effect on cortisol secretion by porcine adrenocortical cells

100%

Kaminska B., Dusza L.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

2

Effects of bromocriptin on broodiness in turkeys

100%

Alkan S., Kasikci G., Bakirel T., Birler S.

Medycyna Weterynaryjna

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2005

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tom 61

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nr 09

3

Prolactin (PRL) and prolactin receptor (PRLR) genes and their role in poultry production traits

88%

Wilkanowska A., Mazurowski A., Mroczkowski S., Kokoszynski D.

Folia Biologica

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2014

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tom 62

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nr 1

4

Does prolactin influence the hypothalamo-pituitary GnRH-LH system in preovulatory-phase ewes?

75%

Misztal T., Romanowicz K., Wankowska M., Wojcik-Gladysz A., Polkowska J.

Reproductive Biology

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2005

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tom 05

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nr 1

5

Biologically active recombinant human prolactin synthesised and secreted extracellularly in baculovirus expression system

75%

Michalik J., Zwierzchowski L., Strokovskaya L., Szolajska E.

Biotechnologia

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2004

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nr 1

6

The involvement of catecholamines in the pituitary release of luteinizing hormone [LH] and prolactin [PRL] in progesterone [P4] - treated gilts

75%

Siawrys G., Przala J.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

7

Associations of growth hormone [GH] and prolactin [PRL] genes polymorphisms with milk production traits in Polish Black-and-White cattle

75%

Dybus A.

Animal Science Papers and Reports

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2002

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tom 20

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nr 4

8

Role of melatonin and prolactin in seasonal moulting in adult raccoon dog [ Nyctereutes procyonoides ]

75%

Valtonen M., Xiao Y.

Zeszyty Naukowe. Przegląd Hodowlany

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1996

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tom 29

9

Human pituitary adenoma cells and VIP. In vitro studies

75%

Fazekas I., Varga I., Bacsy E., Slowik F., Balint K., Pasztor E., Glaz E.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

10

Fine-structural and immunocytochemical analysis of human somatotropic and mammotropic adenoma cell cultures

75%

Bacsy E., Fazekas I., Pasztor E.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

11

The influences of GnRH, oxytocin and vasoactive intestinal peptide on LH and PRL secretion by porcine pituitary cells in vitro

75%

Bogacka I., Siawrys G., Okrasa S., Kaminski T., Przala J.

Journal of Physiology and Pharmacology

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2002

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tom 53

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nr 3

The aim of the present study was to evaluate the possible direct effects of GnRH, oxytocin (OT) and vasoactive intestinal peptide (VIP) on the release of LH and PRL by dispersed porcine anterior pituitary cells. Pituitary glands were obtained from mature gilts, which were ovariektomized (OVX) one month before slaughter. Gilts randomly assigned to one of the four groups were treated: in Group 1 (n=8) with 1 ml/100 kg b.w. corn oil (placebo); in Group 2 (n=8) and Group 3 (n=8) with estradiol benzoate (EB) at the dose 2.5 mg/100 kg b.w., respectively, 30-36 h and 60-66 h before slaughter; and in Group 4 (n=9) with progesterone (P4) at the dose 120 mg/100 kg b.w. for five consecutive days before slaughter. In gilts of Group 2 and Group 3 treatments with EB have induced the negative and positive feedback in LH secretion, respectively. Isolated anterior pituitary cells (106/well) were cultured in McCoy's 5a medium with horse serum and fetal calf serum for 3 days at 37°C under the atmosphere of 95% air and 5% CO2. Subsequently, the culture plates were rinsed with fresh McCoy's 5A medium and the cells were incubated for 3.5 h at 37°C in the same medium containing one of the following agents: GnRH (100 ng/ml), OT (10-1000 nM) or VIP (1-100 nM). The addition of GnRH to cultured pituitary cells resulted in marked increases in LH release (p<0.001) in all experimental groups. In the presence of OT and VIP we noted significant increases (p<0.001) in LH secretion by pituitary cells derived from gilts representing the positive feedback phase (Group 3). In contrast, OT and VIP were without any effect on LH release in Group 1 (placebo) and Group 2 (the negative feedback). Pituitary cells obtained from OVX gilts primed with P4 produced significantly higher amounts (p<0.001) of LH only after an addition of 100 nM OT. Neuropeptide GnRH did not affect PRL secretion by pituitary cells obtained from gilts of all experimental groups. Oxytocin also failed to alter PRL secretion in Group 1 and Group 2. However, pituitary cells from animals primed with EB 60-66 h before slaughter and P4 produced markedly increased amounts of PRL in the presence of OT. Neuropeptide VIP stimulated PRL release from pituitary cells of OVX gilts primed with EB (Groups 2 and 3) or P4. In contrast, in OVX gilts primed with placebo, VIP was without any effect on PRL secretion. In conclusion, the results of our in vitro studies confirmed the stimulatory effect of GnRH on LH secretion by porcine pituitary cells and also suggest a participation of OT and VIP in modulation of LH and PRL secretion at the pituitary level in a way dependent on hormonal status of animals.

12

Effect of prolactin on estradiol and progesterone secretion by isolated chicken ovarian follicles

75%

Hrabia A., Paczoska-Eliasiewicz H., Rzasa J.

Folia Biologica

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2004

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tom 52

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nr 3-4

13

Evidence for protein kinase C [PKC] involvement in action of Prl on theca interna and luteal cells progesterone production

75%

Gregoraszczuk E. L., Stoklosowa S., Slomczynska M.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

14

Nutrition - endocrine interrelationships in the lactating and weaned sow

75%

Tilton J. E., Plaine K. J., Szafranska B., Weigl R. M.

Journal of Physiology and Pharmacology. Supplement

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1992

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tom 43

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nr 1

15

The potential implication of neurokinin B in the modulation of prolactin secretion at the pituitary level in cyclic gilts

63%

Czelejewska W., Zmijewska A., Dziekonski M., Okrasa S.

Journal of Physiology and Pharmacology

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2020

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tom 71

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nr 2

16

Prolactin - not only lactotrophin a 'new' view of the 'old' hormone

63%

Ignacak A., Kasztelnik M., Sliwa T., Korbut R. A., Rajda K., Guzik T. J.

Journal of Physiology and Pharmacology

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2012

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tom 63

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nr 5

17

Progesterone and androgen secretion by isolated cultured bovine corpus luteum cells: effect of LH, hCG, PRL, estradiol 17beta and testosterone

63%

Gregoraszczuk E.

Folia Histochemica et Cytobiologica

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1985

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tom 23

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nr 1-2

18

The lysosomal system of some cell types of the adenohypophysis

63%

Bacsy E., Moi V. D., Gaal G., Rappay G.

Folia Histochemica et Cytobiologica

|

1984

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tom 22

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nr 3-4

19

The role of orexin A in the control of prolactin and growth hormone secretions in sheep - in vitro study

63%

Molik E., Zieba D. A., Misztal T., Romanowicz K., Wszola M., Wierzchos E., Nowakowski M.

Journal of Physiology and Pharmacology. Supplement

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2008

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tom 59

|

nr 9

91-100

20

Immunohistochemical detection of prolactin in clinically non-functioning pituitary adenomas

63%

Winczyk K., Toszek J., Swietoslawski J., Wojtczak E., Pawlikowski M.

Folia Histochemica et Cytobiologica

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2020

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tom 58

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nr 2

Ograniczanie wyników

Prolactin effect on cortisol secretion by porcine adrenocortical cells

Effects of bromocriptin on broodiness in turkeys