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1

Local effect of progesterone infusion into the porcine ovarian artery on androgen and estrogen secretion during the middle luteal phase

100%
Wasowska B., Stefanczyk-Krzymowska S.
Reproductive Biology
|
2009
|
tom 09
|
nr 2
2

Lokalizacja NADPH-diaforazy oraz izoform syntazy tlenku azotu w okolojajnikowym kompleksie naczyniowym u swini po infuzjach progesteronu

100%
Wasowska B., Orzechowska E.
Medycyna Weterynaryjna
|
2008
|
tom 64
|
nr 04B
597-601
The periovarian vascular complex (PVC) participates with the local transfer of ovarian hormones from venous and lymphatic effluent into the arterial blood supplying the ovary. Nitric oxide (NO) plays an important role in ovarian steroidogenesis, angiogenesis and in the regulation of the blood flow. The aim of the present study was to determine if unilateral progesterone (P₄) infusions to the ovarian artery in the follicular phase of the estrous cycle in pigs may change the activity of NADPH-diaphorase (NADPH-d), marker for NOS, and immunoreactivity (IR) of endothelial nitric oxide synthase (eNOS) and inducible (iNOS) isoforms in the PVC arteries and veins. P₄ was infused into the right (experimental PVC) and the saline was infused into the left ovarian artery (control PVC). The doses of P₄ were: 84 ng/min, 2×84 ng/min and 3×84 ng/min on the first, second and third day of the experiment, respectively. Seven days following the final P₄ infusion gilts were sacrificed and both PVC were stained using histo- and immunohistochemistry methods. In comparison with the control PVC, these infusions of P₄ caused in the experimental PVC: decrease (P < 0.001) of NADPH-d activity and IR of eNOS in the arterial and vein’s endothelium, and in the arterial muscular layer. An increase (P < 0.001) of NADPH-d activity and IR of eNOS, iNOS was observed in the vein’s muscular layer. These results indicate that P₄ change IR NOS isoforms and, consequently, the production of NO. Nitric oxide may be involved in the local control of periovarian vascular complex contractility.
3

Retrograde transfer of testosterone to the porcine ovary in follicular and luteal phase of the estrous cycle in vivo

100%
Wasowska B., Stefanczyk-Krzymowska S.
Reproductive Biology
|
2006
|
tom 06
|
nr 2
4
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Local effect of progesterone infusion into ovarian artery on activin A and inhibin alpha-subunit secretion during the middle luteal phase in gilts

100%
Wasowska B., Stefanczyk-Krzymowska S.
Polish Journal of Veterinary Sciences
|
2010
|
tom 13
|
nr 1
97-104
The present study was undertaken to elucidate whether an increased, but physiological, amount of progesterone (P4) supplied to the porcine corpus luteum affects luteal secretion of activin A and inhibin a-subunit (Inha) in freely moving gilts. On day 9 of the estrous cycle (EC), both ovarian arteries and both ovarian veins of gilts (n=5) were cannulated. Progesterone was infused into the right ovarian arteries in gilts on days 10, 11 and 12 of the EC at a rate adequate to its physiological retrograde transfer found during the middle luteal phase of the EC. The P4 infusion rate was 0.62 μg/min (day 10), 2x0.62 μg/min (day 11) and 3x0.62 μg/min (day 12). The left ovarian arteries were infused with saline (control). Blood samples were collected from both ovarian veins on days 10-12 of the EC before and after P4 or saline infusion. The mean plasma activin A level in the ovarian vein ipsilateral to the P4-infused ovary was higher (PcO.OOOl) on days 10-12 of the EC than this found in the contralateral ovarian vein. The level of activin A in the ovarian vein ipsilataral to the infusion of P4 was higher on days 11 (PcO.Ol) and 12 (P<0.0001) and tended to be higher (P<0.07) on day 10 of the EC than this in contralateral ovarian vein. The level of Inha in the ovarian vein ipsilateral to the P4-infused ovary on days 10-12 of the EC was not significantly different (P>0.05) than this found in the contralateral ovarian vein. The results of the present study indicate that a local elevation of P4 concentration in blood supplying the ovary during the middle luteal phase of the porcine EC affects ovarian secretion of activin A. The effect of P4 on the secretion of activin A suggested the existence of a short regulatory loop of a positive feedback between P4 being retrogradely transferred into the ovary and the secretion of this peptide.
5

The effect of unilateral progesterone infusion into the ovarian artery during the middle luteal phase on progesterone secretion in gilts

100%
Wasowska B., Stefanczyk-Krzymowska S.
Reproductive Biology
|
2009
|
tom 09
|
nr 1
6

Local vascular pathway for progesterone transfer to the brain after nasal administration in gilts

81%
Skipor J., Grzegorzewski W., Einer-Jensen N., Wasowska B.
Reproductive Biology
|
2003
|
tom 03
|
nr 2
7

Retrograde transfer of 125I-radiolabelled activin and inhibin in the periovarian vascular complex in the sow

81%
Wasowska B., Stefanczyk-Krzymowska S., Grzegorzewski W.
Polish Journal of Veterinary Sciences
|
2009
|
tom 12
|
nr 2
159-167
This study investigated whether activin A and an inhibin-a subunit fragment (INHα) could permeate in a periovarian vascular complex from ovarian effluent into the ovarian artery and be retrograde transferred into the ovary. Radiolabelled activin A (125I-activin A) and INHα (125I-INHα) were injected (2.7xl07 dpm) into follicles or corpora lutea (CL). It was demonstrated that 125I-activin A and 125I-INHa were released into the ovarian effluent and permeated into the arterial blood supplying the ovary in both phases of the cycle. The concentration of 125I-activin A in ovarian arterial blood was higher in the luteal phase (LP) than in the follicular phase (FP) (P<0.0001) in contrast to 125I-INHα which was higher in the FP (P<0.0001). The concentration of 125I-activin A in uterine tissues generally did not differ between the phases of the estrous cycle, but the concentration of 125I-INHα was higher (P<0.05) in the FP than in the LP. The concentration of 125I-activin A was higher in the LP in samples of endometrium and myometrium (P<0.05), as well as mesometrium (P<0.01), and higher in the FP in samples of mesometrium (P<0.05) close to the ovary than in the samples adjoining the uterine body. In the FP, the concentration of 125I-INHa was higher in endometrium and mesometrium close to the ovary than in samples adjoining the uterine body (P<0.05). In conclusion, the study demonstrated that it was possible for INHa and activin A to be retrograde transferred to the ovary. Thus this transfer could elevate their concentration in arterial blood supplied to the ovarian follicles or CL and may influence production of these peptides in the ovary, modulating ovarian function.
8

Expression of hypoxia inducible factor 1α and antioxidant enzymes: Superoxide dismutases-1 and -2 in ischemic porcine endometrium

81%
Kwiatkowska J., Wasowska B., Gilun P.
Reproductive Biology
|
2017
|
tom 17
|
nr 3
9

Access of dopamine to the median eminence and brain throughout local vascular pathways in sheep

81%
Skipor J., Wasowska B., Picard S., Thiery J.-C.
Reproductive Biology
|
2004
|
tom 04
|
nr 1
10

The effect of intramuscular injections of boar pheromone 5 alpha-androstenol on the hormonal regulation of the estrous cycle in hypoosmatic gilts

81%
Stefanczyk-Krzymowska S., Wasowska B., Skipor J.
Polish Journal of Veterinary Sciences
|
2005
|
tom 08
|
nr 2
11

Luteinizing hormone and prolactin are not retrograde transferred in perihypophyseal vascular complex in ewes

81%
Skipor J., Grzegorzewski W., Wasowska B., Krzymowski T.
Reproductive Biology
|
2004
|
tom 04
|
nr 2
12

Boar pheromone androstenol may affect the ovarian morphology in cycling gilts by humoral pathway

80%
Stefanczyk-Krzymowska S., Wasowska B., Jana B.
Folia Histochemica et Cytobiologica
|
2002
|
tom 40
|
nr 2
13

Intramuscular injections of male pheromone 5alfa-androstenol change the secretory ovarian function in gilts during sexual maturation

71%
Stefanczyk-Krzymowska S., Krzymowski T., Wasowska B., Jana B., Slominski J.
Reproductive Biology
|
2003
|
tom 03
|
nr 3
14
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The influence of steroids on noradrenaline-mediated contractile reactivity of the superficial nasal and facial veins in cycling gilts

71%
Grzegorzewski W. J., Muszak J., Wasowska B., Jana B., Stefanczyk-Krzymowska S.
Polish Journal of Veterinary Sciences
|
2012
|
tom 15
|
nr 2
The nasal venous blood may be directed through the facial vein into the systemic circulation or through the frontal vein into the venous cavernous sinus of the perihypophyseal vascular complex, where hormones and pheromones permeate from the venous blood into the arterial blood supplying the brain and hypophysis. The present study was designed to determine the effect of noradrenaline (NA) on the tension of the nasal, frontal and facial veins of cycling gilts, and influence of ovarian steroid hormones on NA-mediated contractile reactivity. Additionally, the enzyme dopamine-β-hydroxylase catalysing the conversion of dopamine to noradrenaline (DβH) was immunolocalized in these vessels. Among three studied veins, the frontal proximal vein, that fulfill a key role in the supply of the nasal venous blood into the venous cavernous sinus, reacted to NA most strongly (P<0.001) and this reaction was weaker in the periestrous period than in luteal phase (P<0.001). Inversely, the reaction to NA of the facial proximal vein, that carry blood to the peripheral circulation, was stronger in the periestrous period than in luteal phase (P<0.05). P4, E2 and T significantly lowered NA-mediated tension of the frontal proximal vein during the periestrous period (P<0.001), while in the luteal phase P4 might antagonize relaxing effect of E2 to this vessel. The result suggests that supply of the nasal venous blood into the venous cavernous sinus is greater during the periestrous period than during the luteal phase. DβH was clearly expressed in the muscular layer of the isolated superficial nasal and facial veins of gilts in both studied stages of the estrous cycle. We suggest that the reactivity of the superficial veins of the nose and face to NA combined with the previously demonstrated reactivity of these veins to steroid ovarian hormones and male steroid pheromones may regulate the access of priming pheromone androstenol (resorebed in the nasal cavity) to the brain of gilts during periestrous period via humoral local destination transfer.
15

Prolongation of heart graft survival and spleen suppressor cell activity after donor specific blood transfusions in rats differing accross the MHC

71%
Wasowska B., Adamczyk G., Ryffa T., Ziolkowska H., Olszewski W. L.
Archivum Immunologiae et Therapiae Experimentalis
|
1989
|
tom 37
|
nr 1-2
16

Mechanisms ensuring optimal conditions of implantation and embryo development in the pig

37%
Przala J., Gregoraszczuk E. L., Kotwica G., Stefanczyk-Krzymowska S., Ziecik A. J., Blitek A., Ptak A., Rak A., Wojtowicz A., Kaminski T., Siawrys G., Smolinska N., Franczak A., Kurowicka B., Oponowicz A., Wasowska B., Chlopek J., Kowalczyk A. E., Kaczmarek M. M., Waclawik A.
Reproductive Biology
|
2006
|
tom 06
|
nr Suppl.1
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