Prenatal cocaine exposure alters norepinephrine release from cardiac adrenergic nerve terminals.
Prenatal cocaine exposure alters norepinephrine release from cardiac adrenergic nerve terminals.
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产前接触可卡因会改变心脏肾上腺素能神经末梢的去甲肾上腺素释放。
DOI:
10.1016/0024-3205(95)00110-r
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发表时间:
1995
期刊:
影响因子:
6.1
通讯作者:
Roberts,J
中科院分区:
文献类型:
--
作者:
Snyder,DL;Gayheart,P;Johnson,MD;Gurdal,H;Roberts,J
The effect of prenatal cocaine exposure on the development of the cardiac adrenergic nervous system was assessed in neonatal rabbits. Pregnant does received cocaine (4 mg/kg, iv, bid) or saline during gestational days 8 to 29. Hearts were obtained on postnatal days 10, 20, 30 and 50. Adrenergic nerve function was assessed by measuring3H-norepinephrine (NE) uptake and3H-NE release from cardiac synaptosomes. NE uptake increased with postnatal age and was not affected by cocaine exposure. K+-induced NE release increased with age, was significantly less in cocaine exposed rabbits compared to saline exposed rabbits at days 10 and 20, but was similar at days 30 and 50. NE release induced by ionomycin, a Ca2+ionophore, did not change with age, was significantly greater in cocaine exposed rabbits compared to saline exposed rabbits at days 10, 20 and 30, but was similar at day 50. Wet heart weight, heart weight per body weight and NE content of the hearts were not affected by cocaine exposure. These results suggest that prenatal cocaine exposure delays the development of the mechanisms responsible for Ca2+influx during K+-induced depolarization and increases the neurosecretory response to intracellular Ca2+.
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影响因子:
3.5
作者:
M. Kreider;P. B. Goldberg;J. Roberts
通讯作者:
J. Roberts
影响因子:
37.8
作者:
P. Schwartz
通讯作者:
P. Schwartz
影响因子:
2.9
作者:
M. Bayorh;Z. Żukowska;I. Kopin
通讯作者:
I. Kopin
影响因子:
8.8
作者:
J. Biebuyck;J. Fleming;R. Byck;P. Barash
通讯作者:
P. Barash
影响因子:
6.1
作者:
Aloyo,VJ;McIlvain,HB;Bhavsar,VH;Roberts,J
通讯作者:
Roberts,J