The equine cyclic corpus luteum: microvascularization, luteal cell characterization and function
نویسندگان
چکیده
منابع مشابه
Expression of Aldo-keto Reductase 1C23 in the Equine Corpus Luteum in Different Luteal Phases
Regression of the corpus luteum (CL) is characterized by a decay in progesterone (P4) production (functional luteolysis) and disappearance of luteal tissues (structural luteolysis). In mares, structural luteolysis is thought to be caused by apoptosis of luteal cells, but functional luteolysis is poorly understood. 20α-hydroxysteroid dehydrogenase (20α-HSD) catabolizes P4 into its biologically i...
متن کاملProstaglandin biosynthesis, transport, and signaling in corpus luteum: a basis for autoregulation of luteal function.
The corpus luteum (CL) is a transient ovarian endocrine gland formed from the ovulated follicle. Progesterone is the primary secretory product of CL and is essential for establishment of pregnancy in mammals. In the cyclic female, the life span of CL is characterized by luteal development, maintenance, and regression regulated by complex interactions between luteotrophic and luteolytic mediator...
متن کاملAndrogen synthesis and aromatization by equine corpus luteum microsomes.
Whereas mare corpus luteum does not produce androgens or estrogens in vivo, the incubation of mare corpus luteum microsomes with progesterone and NADPH resulted in 17 alpha-hydroxyprogesterone and estrogen production with a small yield of androstenedione. In the presence of an aromatase inhibitor (4-hydroxyandrostenedione), 17 alpha-hydroxyprogesterone and androstenedione were accumulated. Arom...
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Canine reproductive physiology exhibits several unusual features. Among the most interesting of these are the lack of an acute luteolytic mechanism, coinciding with the apparent luteal independency of a uterine luteolysin in absence of pregnancy, contrasting with the acute prepartum luteolysis observed in pregnant animals. These features indicate the existence of mechanisms different from those...
متن کاملExtracellular matrix of the human cyclic corpus luteum.
Extracellular matrix regulates many cellular processes likely to be important for development and regression of corpora lutea. Therefore, we identified the types and components of the extracellular matrix of the human corpus luteum at different stages of the menstrual cycle. Two different types of extracellular matrix were identified by electron microscopy; subendothelial basal laminas and an i...
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ژورنال
عنوان ژورنال: Pferdeheilkunde Equine Medicine
سال: 2003
ISSN: 0177-7726
DOI: 10.21836/pem20030602