Premature Luteinization and Cumulus Cell Defects in Ovarian-SpecificSmad4Knockout Mice
نویسندگان
چکیده
منابع مشابه
Inductions of granulosa cell luteinization and cumulus expansion are dependent on the fibronectin-integrin pathway during ovulation process in mice
It has been known that EGF-like factor secreted from LH-stimulated granuloma cells acts on granulosa cells and cumulus cells to induce ovulation process. Granulosa cells are changed the morphology with differentiating cell functions to produce progesterone. Cumulus cells are detached to make a space between the cells to accumulate hyaluronan rich matrix. LH also changes extracellular matrix (EC...
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Follicular atresia is a phenomenon that leads to evacuation of the ovary from the oocytes and the occurrence of menopause. The contribution of various types of cell death in atresia at different follicular developmental stages requires extensive investigation. In this study, we evaluated 3 types of programmed </...
متن کاملWith low ovarian reserve, Highly Individualized Egg Retrieval (HIER) improves IVF results by avoiding premature luteinization
BACKGROUND Highly Individualized Egg Retrieval (HIER), defined as age-specific early oocyte retrieval (ER), has been demonstrated to avoid premature luteinization in women ≥43. We here investigated whether HIER also applies to younger women with premature ovarian aging (POA), and what best lead follicle size should be for administration of ovulation-triggers. METHODS Fifty-six women ≥43, and ...
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A 77-year-old female presented to the outpatient clinic with a six-month history of left lower quadrant abdominal fullness and pressure. Serum levels included free testosterone 3.8 pg/mL (normal 0-1.8 pg/mL) and testosterone 259 ng/dL (normal 3-41 ng/dL). Magnetic resonance imaging of the pelvis showed bilateral small ovarian cystic masses with marked, progressive enhancement, and restriction o...
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The two principal functions of ovarian follicles are developmental and endocrine. The cumulus cells surrounding the oocyte are specialized to serve the development of the oocyte and steroidogenesis is a principal role of mural granulosa cells that line the follicle wall. The findings in this report demonstrate that oocytectomy or treatment with an inhibitor of SMAD2/3 activation results in decr...
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ژورنال
عنوان ژورنال: Molecular Endocrinology
سال: 2006
ISSN: 0888-8809,1944-9917
DOI: 10.1210/me.2005-0462