Sökning: "oocyte maturation"
Visar resultat 1 - 5 av 16 avhandlingar innehållade orden oocyte maturation.
1. Teleost reproduction: Aspects of Arctic char (Salvelinus alpinus) oocyte growth and maturation
Sammanfattning : In all vertebrate species, reproduction is a hormonally controlled process, important for growth and maturation of gonads and germ cells. Production of functional germ cells is of outmost importance to secure the survival of a species. Fish comprises 50% of the known vertebrates and are found in aquatic habitats all over the world. LÄS MER
2. Signaling pathways in the development of female germ cells
Sammanfattning : Primordial follicles are the first small follicles to appear in the mammalian ovary. Women are born with a fixed number of primordial follicles in the ovaries. Once formed, the pool of primordial follicles serves as a source of developing follicles and oocytes. LÄS MER
3. The role of leptin in zebrafish (Danio rerio) : Novel insights into appetite regulation and reproduction
Sammanfattning : The hormone leptin is a peripheral metabolic signal and an important regulator of energy balance. In mammals, leptin acts on the appetite centers in the hypothalamus, causing anorexigenic functions by inhibiting food intake. It is also considered as a link between the nutritional status and the endocrine reproductive axis. LÄS MER
4. Biological Markers of Fertility
Sammanfattning : Infertility affects 15 % of couples, which corresponds to 60 - 80 million worldwide. The microenvironments in which the oocyte, embryo and fetus mature are vital to the establishment and development of a healthy pregnancy. LÄS MER
5. Growth hormone and somatolactin function during sexual maturation of female Atlantic salmon
Sammanfattning : Background and aims: The growth hormone-insulin-like growth factor I (GH-IGF-I) system is known to act during sexual maturation of female salmonids, but the specific roles are not known. Somatolactin (SL) is a pituitary hormone closely related to GH and is only found in fish. In some species, including salmonids, there are two forms, SLa and SLß. LÄS MER