luteinization


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luteinization

 [loo″te-in″ĭ-za´shun]
the process taking place in the luteal cells of graafian follicles that have matured and discharged their eggs: the cells become hypertrophied and there is vascularization and lipid accumulation (the latter in some species giving a yellow color), the follicles then become corpora lutea.
Luteinization, beginning after rupture of the ovarian follicle in ovulation (A) and progressing through vascularization and hypertrophy of the maturing corpus (B, C); it is followed by regression (D) to the corpus albicans (E). From Dorland's, 2000.

lu·te·in·i·za·tion

(lū'tē-in-i-zā'shŭn),
Transformation of the mature ovarian follicle and its theca interna into a corpus luteum after ovulation; formation of luteal tissue, which appears yellow in some species.

lu·te·in·i·za·tion

(lū'tē-in-ī-zā'shŭn)
Transformation of the mature ovarian follicle and its theca interna into a corpus luteum after ovulation.
References in periodicals archive ?
This short-run LH increase will ensure more proper final oocyte maturation but not cause luteinization (7) because the process of luteinization requires time.
Sclerosing stromal tumors with prominent luteinization during pregnancy: a report of 8 cases emphasizing diagnostic problems.
Hedin, "Molecular aspects of hormone action in ovarian follicular development, ovulation, and luteinization," Annual Review of Physiology, vol.
Stevenson, "Ferredoxin and cytochrome P-450scc concentrations in granulosa cells of porcine ovaries during follicular cell growth and luteinization," Journal of Steroid Biochemistry, vol.
However, nuclear [beta]-catenin was not detected in LH-stimulated cells, which is consistent with a recent study that showed, during terminal differentiation of GCs, the WNT/[beta]-catenin pathway is inactive and over-activation of CTNNB1 negatively affects LH-induced ovulation and luteinization (34).
In this study, miR-184 that upregulated in the ovaries of pregnant goats may inhibit the expression of target genes associated with follicular development, ovulation and estrogen secretion; thereby inhibiting ovulation and estrogen secretion and promoting luteinization and progesterone secretion.
Benign mucinous cystadenoma with stromal luteinization during pregnancy: a hormonally responsive tumor and a rare cause of fetal intrauterine growth restriction.
sativa stimulated release on LH that caused luteinization of the Graafian follicles in the ovaries, resulting in increased concentrations of serum progesterone.
Novel signaling pathways that control ovarian follicular development, ovulation, and luteinization. Recent Prog Horm Res, v.57, p.195-220, 2002.
Regulation of follicular luteinization by a gonadotropin-releasing hormone agonist: relationship between steroidogenesis and apoptosis.
* The physiologic effects of the LH surge include rupture of preovulatory follicles (ovulation), completion of oocyte maturation, and transformation of follicular cells into luteal cells (luteinization).
(1,2) Of even greater concern, at least one study (3) reported that the rise in FSH and stimulation of ovarian follicles during the hormone-free interval are sufficient to result in intermittent luteinization of a follicle, demonstrated by a rise in a urinary progesterone metabolite.