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2 results
Formation and retention of cotinine during placental transfer of nicotine in human placental cotyledon.
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Maternal smoking during pregnancy causes reduction of fetal breathing movements, an effect attributed to nicotine in fetal blood. Nicotine is metabolized to cotinine which has a long plasma half-life and exhibits slow clearance across membrane barriers. It is also known to activate placental
Transplacental transfer and biotransformation studies of nicotine in the human placental cotyledon perfused in vitro.
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Our objective was to study the characteristics of transfer and biotransformation of nicotine in the human term placenta. Nicotine transfer was studied by dually perfusing an isolated cotyledon of the human placenta in vitro. Nicotine metabolism to cotinine was investigated in intact tissue during
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