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2007 | 22 | 4 |

Tytuł artykułu

Local hormonal regulations in female reproductive organs of domestic animals

Warianty tytułu

PL
Lokalne regulacje hormonalne w narzadach rozrodczych samic zwierzat domowych

Języki publikacji

EN

Abstrakty

EN
The discovery of local transfer of ovarian hormones (steroids, oxytocin) and uterine prostaglandins (PGF2α and PGE2) in cow, ewe and sow created a new point of view on hormonal regulation of the reproduction and thereby on the regulation of the estrous cycle of the female. It was demonstrated that retrograde transfer of hormones to the place of its secretion and destination transfer of ovarian hormones to the oviduct and uterus, and uterine prostaglandins to the ovary and oviduct is realized on the base of morphological and physiological adaptations of blood and lymphatic vessels of the mesovarium and mesometrium. These processes result in continuous local elevation of the concentration of sex hormones in blood supplying female reproductive organs by 30-70% in comparison with systemic arterial blood. Local destination and retrograde transfer of ovarian hormones and uterine prostaglandins is a way by which reproductive organs are selectively supplied with increased amount of these hormones, adequate to their needs.
PL
Wykrycie systemu lokalnego, zwrotnego i docelowego, transferu hormonów jajnikowych (hormony steroidowe, oksytocyna) i macicznych prostaglandyn (PGF2α i PGE2 ) u krowy, owcy i świni spowodowało zmianę w rozumieniu hormonalnej regulacji rozrodu, w tym regulacji cyklu rujowego samicy.Wykazano, że lokalny, zwrotny transfer hormonów do miejsca ich wytwarzania (jajnik, macica) oraz docelowy transfer hormonów jajnikowych do jajowodu i macicy, a także macicznych prostaglandyn do jajnika i jajowodu odbywa się w oparciu o przystosowania morfologiczne i fizjologiczne naczyń krwionośnych i limfatycznych krezki jajnika i krezkimacicy.Wynikiemtych procesów jestm.in. lokalne podwyższenie o 30-70% stężenia hormonów płciowych we krwi zaopatrującej narządy rozrodcze samicy w stosunku do ich stężenia w obwodowej krwi tętniczej. Lokalnie docelowy i zwrotny transfer hormonów jajnikowych i macicznych prostaglandyn umożliwia wybiórcze dostarczenie do narządów rozrodczych zwiększonej ich ilości, zgodnie z zapotrzebowaniem tych narządów.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

22

Numer

4

Opis fizyczny

p.742-752,fig.,ref.

Twórcy

  • University of Rzeszow, Rejtana 16a, 35-310 Rzeszow, Poland

Bibliografia

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