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  2. Luteal support - Wikipedia

    en.wikipedia.org/wiki/Luteal_support

    Luteal support is the administration of medication, generally progesterone, progestins, hCG or GnRH agonists, to increase the success rate of implantation and early embryogenesis, thereby complementing and/or supporting the function of the corpus luteum. It can be combined with for example in vitro fertilization and ovulation induction.

  3. Luteolysis - Wikipedia

    en.wikipedia.org/wiki/Luteolysis

    During a pregnancy, the corpus luteum remains on the ovary releasing progesterone which will maintain a state of uterine quiescence and close the cervix until the delivery of the fetus. Alternatively if no implantation of a blastocyst occurs, the corpus luteum is degraded to a corpus albicans (scar tissue) by PGF2α released by uterine ...

  4. Pharmacokinetics of progesterone - Wikipedia

    en.wikipedia.org/wiki/Pharmacokinetics_of...

    Progesterone is used as part of hormone replacement therapy in people who have low progesterone levels, and for other reasons. For purposes of comparison with normal physiological circumstances, luteal phase levels of progesterone are 4 to 30 ng/mL, while follicular phase levels of progesterone are 0.02 to 0.9 ng/mL, menopausal levels are 0.03 to 0.3 ng/mL, and levels of progesterone in men ...

  5. Progesterone (medication) - Wikipedia

    en.wikipedia.org/wiki/Progesterone_(medication)

    Progesterone (P4), sold under the brand name Prometrium among others, is a medication and naturally occurring steroid hormone. [20] It is a progestogen and is used in combination with estrogens mainly in hormone therapy for menopausal symptoms and low sex hormone levels in women.

  6. Progesterone - Wikipedia

    en.wikipedia.org/wiki/Progesterone

    During human pregnancy, progesterone is produced in increasingly high amounts by the ovaries and placenta. At first, the source is the corpus luteum that has been "rescued" by the presence of human chorionic gonadotropin (hCG) from the conceptus. However, after the 8th week, production of progesterone shifts to the placenta.

  7. Mifepristone - Wikipedia

    en.wikipedia.org/wiki/Mifepristone

    Mifepristone-induced decidual breakdown indirectly leads to trophoblast detachment, resulting in decreased syncytiotrophoblast production of hCG, which in turn causes decreased production of progesterone by the corpus luteum (pregnancy is dependent on progesterone production by the corpus luteum through the first nine weeks of gestation—until ...

  8. Luteal phase - Wikipedia

    en.wikipedia.org/wiki/Luteal_phase

    At the end of the luteal phase, progesterone levels fall and the corpus luteum atrophies. The drop in progesterone leads to endometrial ischemia which will subsequently shed in the beginning of the next cycle at the start of menses. [1] This last stage in the luteal or secretory phase may be called the ischemic phase and lasts just for one or ...

  9. Maternal recognition of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_recognition_of...

    Luteolysis is the regression of the corpus luteum. The process is identified by the decline of progesterone and it signifies the absence of pregnancy following ovulation. In the non pregnant uterus, the decline of progesterone allows the return of oestrogen, resulting in the upregulation of oxytocin receptors and consequently pulsatile release ...

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