Key result
Endogenous NOS inhibitors such as L-NMMA and ADMA regulate NO production in rat myometrium, with impaired NO production leading to increased ET-1 and contractions at term gestation.
Population
Rat myometrium (non-pregnant and gestational at 14th, 20th, 22nd days, and after delivery)
Comparison
Intraperitoneal application of authentic L-NMMA… vs Untreated controls or different gestational time…
Design
Preclinical
Follow-up
2 weeks (for in vivo L-NMMA application)
Authors
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Hypothesis-generating in rat myometrium; clinical relevance to human term labor remains untested.
Accumulation of endogenous NOS inhibitors at term gestation in rats impairs NO production and increases ET-1, likely promoting myometrial contractions for delivery.
Yoshihito Momohara (2004) studied Gestation. Endogenous NOS inhibitors (L-NMMA and ADMA) and endothelin-1 was evaluated on Myometrial contractions and ET-1 content. Endogenous NOS inhibitors such as L-NMMA and ADMA regulate NO production in rat myometrium, with impaired NO production leading to increased ET-1 and contractions at term gestation.
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