Zusammenfassung
Die seit etwa 30 Jahren fast unveränderte Frühgeburtenrate von weltweit ca. 7 % und
die damit einhergehende perinatale Mortalität und Morbidität sind vor allem auf
unzureichende Kenntnisse über die eine Frühgeburt auslösenden Pathomechanismen zurückzuführen.
Oxytozin (OT) sowie sein spezifischer Rezeptor (OTR), spielen als Teil eines parakrinen
Systems eine Schlüsselrolle im Prozess (vor-)zeitiger Wehentätigkeit. Zum einen führt
die Bindung von OT an OTR zu Kontraktionen des Myometriums, zum anderen wird über
den Rezeptor-Liganden-Komplex die Produktion von intrauterinen Prostaglandinen (PGE2, PGF2 α) vor allem in der Dezidua und dem Myometrium stimuliert. Die Expression von OT und
OTR steigt zum Zeitpunkt zeitiger sowie vorzeitiger Wehentätigkeit deutlich an und
kann durch verschiedene Substrate beeinflusst werden.
Der Schwerpunkt unserer Arbeitsgruppe liegt auf der Erforschung des Einflusses inflammatorischer
Zytokine auf die OTR-Signalkaskade.
Abstract
Since 30 years the rate of preterm deliveries of 7 % remained unchanged. This is
due to a lack of understanding of the underlying pathomechanisms of preterm labor.
Oxytocin (OT) as well as its receptor (OTR) play a key role in the process of (preterm)
labor as part of a paracrine system that regulates myometrial contractility. Binding
of OT to its corresponding receptor, OTR, leads to activation of actin-myosin interactions
and therewith myometrial contractions as well as production of intrauterine prostaglandins
(PGE2, PGF2 α) mainly in decidua and myometrium. Oxytocin expression increases significantly at
time of parturition, as does the expression of its receptor. Both can be influenced
by diverse cellular substrates. The focus of our research group is based on the
exploration of the influence of cytokines on OTR signaling.
Schlüsselwörter
Oxytozin - Rezeptor - vorzeitige Wehentätigkeit - Frühgeburt - Zytokine
Key words
Oxytocin - receptor - preterm labor - preterm birth - cytokine
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Dr. Ulrike Friebe-Hoffmann
Universitäts-Frauenklinik Düsseldorf
Moorenstraße 5
40225 Düsseldorf
Phone: 02 11/8 11/75 16
Fax: 02 11/8 11/98 91