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.

luteinization

/lu·te·in·iza·tion/ (-in″ĭ-za´shun) the process by which a postovulatory ovarian follicle transforms into a corpus luteum through vascularization, follicular cell hypertrophy, and lipid accumulation, the latter in some species giving the yellow color indicated by the term.
Enlarge picture
Luteinization, beginning after rupture of the ovarian follicle in ovulation (A) and progressing through vascularization and hypertrophy of the maturing corpus luteum (B, C) ; it is followed by regression (D) to the corpus albicans (E) .

luteinization

[lo̅o̅′tē·in′īzā′shən]
Etymology: L, luteus, yellow
the formation of the corpus luteum from an ovarian follicle that has recently discharged an ovum. The process involves the hypertrophy of the follicular lutein cells and the development of blood vessels and connective tissue at the site.

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.

luteinization

the process taking place in the follicle cells of graafian follicles that have matured and discharged their egg: the cells become hypertrophied and there is vascularization and lipid accumulation (the latter in some species giving a yellow color), the follicles becoming corpora lutea.
References in periodicals archive ?
Beta-catenin (CTNNB1) promotes preovulatory follicular development but represses LH-mediated ovulation and luteinization.
Expression of Growth and Differentiation Factor 9 (GDF9) and Bone Morphogenetic Protein 15(BMP15) and Their Effect on In vitro Luteinization of Bovine Granulosa Cells.
These findings strongly suggest that gene expressions in the surrounding cumulus cells are essential for the meiotic granulosa cell luteinization in cattle and is associated with a change in splicing of the FSH-receptor as was also described by [24].
Premature luteinization (PL) prior to egg retrieval, in vitro fertilization, and embryo transfer may be detrimental to establishing a viable pregnancy.
In addition, the measurement of PG may indicate the occurrence of premature luteinization of the follicle(s), which may lead to an unsuccessful outcome.
After ovulation, the developed egg leaves the ovary and the ruptured follicle undergoes luteinization and becomes a progesterone-secreting structure known as the corpus luteum.
Granulosa cells of women with PCOS appear to be incompetent to physiological P4 secretion after luteinization if ovulation is achieved (50).
Role of insulin, cortisol in luteinization of porcine granulosa cells growth in chemically defined media.
Seventy-two hours after ovulation, some partial luteinization began at the base of the corpus luteum.
Nagamani M, Hannigan EV, Dinh TV, Stuart CA Hyperinsulinemia and stromal luteinization of the ovaries in postmenopausal women with endometrial cancer.
Although granulosa cell tumors often become luteinized during pregnancy, the luteinization is usually not as pronounced as in the solitary luteinized cyst of pregnancy, and Call-Exner bodies have not been reported in the latter entity.
Two functionally independent events occur in association with ovulation: rupture of the follicular wall and luteinization.