27 research outputs found
100 Innovation Stories Abruzzo. Ricerca quali-quantitativa sulle eccellenze industriali e universitarie della Regione Abruzzo
No full textEffect of oxytocin on nitric oxide production by human fetal membranes at term gestation
No full textEffects of long-term treatment with antiandrogen Casodex on human testis. An ultrastructural and morphometric study.
No full textProgetto di rigenerazione urbana per la trasformazione dell'area dell'AMA in Piazza Caduti della Montagnola e per la riqualificazione degli spazi aperti limitrofi a Roma
No full text
Pregnancy promoting action of HCG in huuman myometrium and fetal membranes
No full textHuman chorionic gonadotropin (HCG) plays a major role in early human development through a series of well recognized pregnancy-promoting actions that are exerted in the first trimester, including maternal recognition of pregnancy, enhancement of embryo implantation and survival, stimulation of trophoblast growth and differentiation, and prolongation of the functional life of the corpus luteum. Recent research indicates that HCG can exert significant pregnancy-promoting actions also in the remainder of pregnancy through its effect on the myometrium and on fetal membranes. In the myometrium, HCG promotes the inhibition of smooth muscle cell contractility through several mechanisms, including inhibition of gap junction formation, reduction of intracellular calcium concentration, increase in the expression of progesterone receptor, and an increase in the expression of phosphodiesterase 5 (PDE5), an enzyme controlling the intracellular levels of cGMP. This effect appears to be specific for PDE5 since it has not been found for other hormones potentially involved in pregnancy such as estrogen, progesterone and thyroid hormone. In fetal membranes, HCG can modulate expression of the inducible isoform of nitric oxide synthase (iNOS), as well as specific immunoregulatory cytokines such as the high mobility group box 1 (HMGB1) protein. This accumulating evidence suggests that HCG has a wide spread pregnancy-promoting actions that are exerted in various reproductive and gestational tissues
Pregnancy-promoting actions of HCG in human myometrium and fetal membranes
No full textHuman chorionic gonadotropin (HCG) plays a major role in early human development through a series of well recognized pregnancy-promoting actions that are exerted in the first trimester, including maternal recognition of pregnancy, enhancement of embryo implantation and survival, stimulation of trophoblast growth and differentiation, and prolongation of the functional life of the corpus luteum. Recent research indicates that HCG can exert significant pregnancy-promoting actions also in the remainder of pregnancy through its effect on the myometrium and on fetal membranes. In the myometrium, HCG promotes the inhibition of smooth muscle cell contractility through several mechanisms, including inhibition of gap junction formation, reduction of intracellular calcium concentration, increase in the expression of progesterone receptor, and an increase in the expression of phosphodiesterase 5 (PDE5), an enzyme controlling the intracellular levels of cGMP. This effect appears to be specific for PDE5 since it has not been found for other hormones potentially involved in pregnancy such as estrogen, progesterone and thyroid hormone. In fetal membranes, HCG can modulate expression of the inducible isoform of nitric oxide synthase (iNOS), as well as specific immunoregulatory cytokines such as the high mobility group box 1 (HMGB1) protein. This accumulating evidence suggests that HCG has a wide spread pregnancy-promoting actions that are exerted in various reproductive and gestational tissues
