2020
DOI: 10.1055/a-1274-9290
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Progesterone receptor blockers: historical perspective, mode of function and insights into clinical and scientific applications

Abstract: ZusammenfassungAntigestagene (Antiprogestine) sind funktionelle Antagonisten von Progesteron (P4), welche die Vermittlung der biologischen Wirkungen von P4 verhindern, indem sie entweder seine Produktion oder seine Funktionen unterdrücken. Unter Letzteren befinden sich Progesteronrezeptorantagonisten, die die Bindung von P4 an seinen nukleären Rezeptor PGR kompetitiv hemmen. Diese finden sowohl in der Human- als auch in der Veterinärmedizin Anwendung, in der Kleintiermedizin insbesondere zur Nidationsverhütung… Show more

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Cited by 11 publications
(25 citation statements)
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“…Thus, although aglepristone presents no direct effects on P4 levels, it presents high potential to disrupt PGR-mediated P4 signaling. The latter, i.e., the disruption of PGR-mediated effects, is expected to be potentiated by the function of type II antigestagens as transdominant repressors (reviewed in [ 20 ]). As an antigestagen, aglepristone is an effective abortifacient agent and the drug of choice in dogs (reviewed in [ 20 ]).…”
Section: Discussionmentioning
confidence: 99%
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“…Thus, although aglepristone presents no direct effects on P4 levels, it presents high potential to disrupt PGR-mediated P4 signaling. The latter, i.e., the disruption of PGR-mediated effects, is expected to be potentiated by the function of type II antigestagens as transdominant repressors (reviewed in [ 20 ]). As an antigestagen, aglepristone is an effective abortifacient agent and the drug of choice in dogs (reviewed in [ 20 ]).…”
Section: Discussionmentioning
confidence: 99%
“…The latter, i.e., the disruption of PGR-mediated effects, is expected to be potentiated by the function of type II antigestagens as transdominant repressors (reviewed in [ 20 ]). As an antigestagen, aglepristone is an effective abortifacient agent and the drug of choice in dogs (reviewed in [ 20 ]). Although most bitches have no to mild side effects, some animals experience uterine inflammatory conditions, such as endometritis [ 70 , 71 ].…”
Section: Discussionmentioning
confidence: 99%
See 2 more Smart Citations
“…By competing with P4 in binding to PGR, antigestagens interfere with P4 signaling [ 17 ]. Type II antigestagens, which are also used in veterinary practice, function as transdominant repressors, i.e., they activate PGR and induce its attachment to promoters of target genes, but inhibit the downstream cascades, e.g., by recruitment of corepressors to target gene promoters, thereby actively inhibiting their expression [ 18 , 19 , 20 , 21 ]. Consequently, type II antigestagens do not require the natural PGR ligand (P4) to exhibit their function [ 17 ].…”
Section: Introductionmentioning
confidence: 99%