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  Encyclopedia of Keywords > Nature > Life > Reproduction > Fertility > Ovulation   Michael Charnine

Keywords and Sections
OVULATION
MICE
PROSTAGLANDIN
ESPEY LL
PERIOD
WOMEN
OVARY
OVULATION RATE
CYCLE
SPERM
GNRH
HCG
LUTEINIZING
EGG
DAY
FEMALE
FOLLICULOGENESIS
AFTER OVULATION
OVARIAN FOLLICLE
MENSES
INTERCOURSE
CONCEALED
LIGANDS
RABBIT
HOURS AFTER
Review of Short Phrases and Links

    This Review contains major "Ovulation"- related terms, short phrases and links grouped together in the form of Encyclopedia article.

Definitions

  1. Ovulation is a unique physiological process in which healthy tissue is degraded.
  2. Ovulation is a key step in becoming pregnant.
  3. Ovulation is a precisely timed process by which a mature oocyte is released from an ovarian follicle.
  4. Ovulation is a complex process, in which healthy ovarian tissue has to be destroyed to allow release of the oocyte from the ovary.
  5. Ovulation is a specific phase in your menstrual cycle.

Ovulation

  1. Löfman CO, Brännström M, Holmes PV and Janson PO (1989) Ovulation in the isolated perfused rat ovary as documented by intravital microscopy.
  2. Follicular rupture and ovulation.
  3. Löfman CO, Janson PO, Kallfelt BJ, Ahren K and LeMaire WJ (1982) The study of ovulation in the isolated perfused rabbit ovary.
  4. Full article ovulation The process whereby a Graafian follicle ruptures and releases a mature oocyte from the ovary.
  5. Moreover, the absence of blood flow in the apex was noted in the rat ovary prior to ovulation (Löfman et al., 2002 ).

Mice

  1. These data indicate that ovulation rate is normal in Ptx3 -deficient mice.
  2. ADAMTS-1 null mice also display impaired ovulation with morphologically abnormal ovaries ( 6).
  3. Versican fragments containing the neoepitope DPEAAE are generated in cumulus oocyte complexes during ovulation.

Prostaglandin

  1. If ovarian prostaglandin synthesis is inhibited, ovulation does not take place.
  2. Prostaglandin E1 inhibits abnormal follicle rupture and restores ovulation in indomethacin-treated rats.
  3. Thus, the drug significantly inhibited the ovulation from the treated ovaries, compared with untreated contralateral ones or vehicle-treated ovaries.

Espey Ll

  1. Espey LL 1980 Ovulation as an inflammatory reaction – a hypothesis.
  2. Richards JS, Russell DL, Ochsner S & Espey LL 2002 Ovulation: new dimensions and new regulators of the inflammatory-like response.
  3. Tanaka N, Espey LL, Kawano T and Okamura H (1991) Comparison of inhibitory actions of indomethacin and epostane on ovulation in rats.

Period

  1. Yes, but ovulation is not menstruation (getting one's "period").
  2. Signs of problems with ovulation include irregular menstrual periods or no periods.
  3. This cyclic pattern results in the monthly cycle of ovulation and menstruation.
  4. Irregular menstrual periods and the absence of ovulation cause women to produce estrogen, but not progesterone.
  5. Following ovulation the follicle forms a corpus luteum which synthesizes and prepares hormones to prepare the uterus for pregnancy.

Women

  1. Problems with ovulation account for most infertility in women.
  2. Urine tests can determine pregnancy about 2 weeks after ovulation.
  3. Polycystic Ovarian Syndrome (PCOS) is another common cause of ovulation failure.
  4. A woman with PCOS may be able to take fertility drugs, such as Clomid, or injectable fertility medications to induce ovulation.
  5. To help ovulation occur, women also can take insulin-sensitizing medications or steroids (to lower androgen levels).

Ovary

  1. Secondary oocyte s are released at ovulation.
  2. A woman must release an egg from one of her ovaries (ovulation).
  3. This double effect eases the ovulation of the egg from the ovary to the oviduct.
  4. Ovulation: Release of egg cell ( ovum) from the ovary of an animal.
  5. For ovulation to be successful, the ovum must be supported by both the corona radiata and cumulus oophorous granulosa cells.

Ovulation Rate

  1. Davis GH : Major genes affecting ovulation rate in sheep.
  2. Baird DT, Campbell BK : Follicle selection in sheep with breed differences in ovulation rate.

Cycle

  1. Following ovulation, the luteal phase of the menstrual cycle begins.
  2. Ovulation also occurs in the estrous cycle of animals, which differs in many fundamental ways to the menstrual cycle.
  3. The male hormones stimulate production of spermatozoa, and the female hormones control ovulation, pregnancy and the estral cycle.

Sperm

  1. At ovulation, this cervical mucus is clear, runny, and conducive to sperm.
  2. Checks of ovulation can also be done in the doctor's office, using blood tests for hormone levels or ultrasound tests of the ovaries.
  3. The IUI costs $500 which includes the sperm preparation, office visit and IUI. The cost of LH kits or other methods of ovulation monitoring is separate.

Gnrh

  1. In this model, ovulation occurs an average of 28 h after the second GnRH injection (Pursley et al., 1995 ).
  2. Generally, administered FSH or GnRH can induce ovulation by rapidly accelerating the pace of folliculogenesis, allowing for conception.

Hcg

  1. The ovulation rate was determined 24 h after hCG by counting ova in the oviducts.
  2. Versican message levels were maximal after 4–12 h of hCG treatment, a time nearing ovulation.
  3. Antibodies to tPA or 2AP were effective in suppressing ovulation only when injected at the same time of hCG administration ( Tsafriri et al.

Luteinizing

  1. Ovulation can be determined by a number of different luteinizing hormone (LH) urinary tests.
  2. Leukocyte supplementation increases the luteinizing hormone-induced ovulation rate in the in vitro-perfused rat ovary.

Egg

  1. The cumulus is shed along with the egg at ovulation.
  2. Each month after puberty ovulation occurs, the process of releasing a mature egg into the fallopian tube.

Day

  1. IUI is timed as closely as possible to the day of ovulation.
  2. Rising levels of estrogen in the blood trigger secretion of LH, which stimulates follicle maturation and ovulation (day 14, or midcycle).
  3. Forty-eight hours later, animals received 10 IU human chorionic gonadotropin (hCG) subcutaneously to stimulate ovulation and luteal development.

Female

  1. This attainment of positive feedback is the hallmark of female sexual maturity, as it allows the midcycle LH surge necessary for ovulation.
  2. OVULATION OF A MATURE oocyte and its accompanying mass of cumulus cells is essential for female reproductive success.
  3. The absence of this biochemical reaction leads to impaired cumulus mucification, ovulation of nude oocytes, and female sterility (Zhuo et al., 2001 ).

Folliculogenesis

  1. Thus, Bmp15 is dispensable and Gdf9 obligatory for normal folliculogenesis and ovulation in mouse.
  2. Lee WS, Otsuka F, Moore RK, Shimasaki S : Effect of bone morphogenetic protein-7 on folliculogenesis and ovulation in the rat.
  3. Figure 4. Schematic representation of the effects of a mutation in fecundity (Fec) gene on folliculogenesis and ovulation rate in sheep.

After Ovulation

  1. Studies of American girls suggest that the average interval between menarche and ovulation is several months.
  2. Define endometrium, myometrium, and ovulation.
  3. After ovulation, versican was localized around newly formed corpora lutea and vasculature.
  4. This network stays with the ovum after ovulation and have been shown to be necessary for fertilization.
  5. After ovulation, the ruptured follicles rapidly reorganize to form corpora lutea, a highly vascularized tissue.

Ovarian Follicle

  1. Okuda Y, Okamura H, Kanzaki H and Takenaka A (1983b) Capillary permeability of rabbit ovarian follicles prior to ovulation.
  2. Following ovulation in mustelids displaying an obligate diapause, the ovarian follicle collapses and forms the CL ( Hanssen 1947).
  3. Gonadotropin-dependent regulation of bovine pituitary adenylate cyclase-activating polypeptide in ovarian follicles prior to ovulation -- Sayasith et al.

Menses

  1. Irregular, anovulatory menses commonly occur for 1-2 years or more before regular ovulation is established.
  2. Ovulation is necessary for fertility, and may or may not accompany the earliest menses.

Intercourse

  1. Murdoch WJ, McDonnel AC : Roles of the ovarian surface epithelium in ovulation and carcinogenesis.
  2. Timing sexual intercourse for probable dates of ovulation is a common first step.
  3. Having intercourse in the days previous the ovulation or post ovulation is a highly recommended form of conceiving a baby.
  4. On the contrary, some previous studies 10 20 have reported that severe leukocyte depletion did not affect ovulation.

Concealed

  1. Human females have concealed ovulation or hidden estrus.
  2. Some answers to the objection that women know when they menstruate, so therefore ovulation is not concealed.

Ligands

  1. Thus, our in vivo studies strongly support the physiological mediation of LH action on ovulation by ovarian EGF-like ligands.
  2. Injection of AG1478 into the ovarian bursa provided further support for the suggested mediation of LH-stimulated ovulation by paracrine EGF ligands.

Rabbit

  1. V. Ultrastructure of tunica albuginea and theca externa of rabbit graafian follicles prior to induced ovulation.
  2. IV. Ultrastructure of membrana granulosa of rabbit graafian follicles prior to induced ovulation.

Hours After

  1. Fertilization normally occurs in the ampulla of the uterine tube 12-24 hours after ovulation (Figure 4).
  2. The differences in the structure of the COCs were even more dramatic after ovulation (13.5 hours after hCG injection).

Categories

  1. Nature > Life > Reproduction > Fertility
  2. People > Age > People > Women
  3. Encyclopedia of Keywords > Society > Humans > Medicine
  4. Nature > Life > Reproduction > Sex
  5. Glossaries > Glossary of Developmental Biology /
  6. Books about "Ovulation" in Amazon.com

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  Originally created: February 19, 2008.
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