Sökning: "Ovarian follicle"

Visar resultat 21 - 25 av 43 avhandlingar innehållade orden Ovarian follicle.

  1. 21. Metabolic and ovarian consequences of perinatal sex steroid programming

    Författare :Camilla Alexanderson; Göteborgs universitet; []
    Nyckelord :programming; sex steroids; insulin resistance; skeletal muscle; adipose tissue; ovary;

    Sammanfattning : Endocrine and metabolic disturbances in adulthood may stem from insults such as nutritional and hormonal alterations that occur at critical periods in pre- or postnatal life – a process known as programming. This means that suboptimal conditions in utero and early life may contribute to adult reproductive and metabolic impairments such as type 2 diabetes, insulin resistance, and dyslipidemia. LÄS MER

  3. 22. Molecular mechanisms of ovarian follicular development and early embryogenesis

    Författare :Nagaraju Gorre; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ovary; primordial follicles; Embryogenesis; PI3K-mTORC1 signaling;

    Sammanfattning : In the mammalian ovary, the dormant primordial follicles are the source of developing follicles and fertilizable ova for the entire reproductive life. In addition, the duration of fertility of a female is determined by the initial size of her pool of primordial follicles and by the rate of its activation and depletion. LÄS MER

  4. 23. Regulation of apoptosis and steroidogenesis in ovarian preovulatory granulosa cells

    Författare :Eva Svensson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; apoptosis; granulosa cells; luteinizing hormone; progesterone receptor; RU 486; Org 31710; leptin; steroidogenesis;

    Sammanfattning : Only a minute fraction of ovarian follicles present in a foetal ovary will complete the path to ovulation. The majority of the follicles will instead undergo atresia, a hormonally controlled apoptotic process. Apoptosis occurs throughout follicle development, with an extensive reduction in the number of follicles present at birth. LÄS MER

  5. 24. Biological Markers of Fertility

    Författare :Sarah Nordqvist; Helena Åkerud; Karin Kårehed; Agneta Skoog Svanberg; Anneli Stavreus-Evers; Geraldine Hartshorne; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; angiogenesis; embryogenesis; female reproductive tract; fertility; fertilization; Histidine-rich glycoprotein; intron; in vitro fertilization; oocyte; ovarian response; pregnancy; single nucleotide polymorphism; Src homology 2 domain-containing adapter protein B;

    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

  7. 25. Preservation of fertility through cryopreservation and in vitro maturation of human ovarian follicles and oocytes

    Författare :Julius Hreinsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Oocyte; maturation in-vitro; cryopreservation; ovarian follicles; culture; IVM; preservation of fertility;

    Sammanfattning : One of the most rapidly expanding fields in assisted reproduction is the preservation of fertility for young women at risk of premature ovarian failure. This may be caused by cytotoxic therapy or other reasons. Cryopreservation of follicles in ovarian tissue has been successful in animal models with live young being born. LÄS MER