Effects of ethanol on physiological retinoic acid levels.

Effects of ethanol on physiological retinoic acid levels.
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DOI:
10.1002/iub.500
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发表时间:
2011-09
期刊:
影响因子:
4.6
通讯作者:
Napoli, Joseph L.
Napoli, Joseph L.
中科院分区:
生物学3区
文献类型:
--
作者:
Napoli, Joseph L.

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全反式维甲酸(atRA)在胚胎发育和整个出生后的脊椎动物生活中发挥着重要作用。不足或过量的atRA在发育中的胚胎中引起致畸和/或毒性作用:干扰atRA生物合成或信号传导可能是某些形式的癌症的基础。维生素A(atRA前体)缺乏和/或毒性的许多症状与另一种多效性药物乙醇的症状重叠。这些重叠的症状促使研究了解是否干扰atRA的生物合成和/或行动可以解释(部分)与过量乙醇消耗相关的病理。乙醇影响类维生素A代谢的许多方面和位点特异性作用机制,但没有可靠的数据支持抑制维生素A代谢,导致正常维生素A营养期间体内atRA降低。实际上,乙醇在特定部位对atRA没有影响或增加atRA。尽管认识到这一点,深入了解乙醇和类维生素A之间的相互作用是否代表因果关系需要更多的研究。
All-trans-retinoic acid (atRA) serves essential functions during embryogenesis and throughout post-natal vertebrate life. Insufficient or excess atRA causes teratogenic and/or toxic effects in the developing embryo: interference with atRA biosynthesis or signaling likely underlies some forms of cancer. Many symptoms of vitamin A (atRA precursor) deficiency and/or toxicity overlap with those of another pleiotropic agent—ethanol. These overlapping symptoms have prompted research to understand whether interference with atRA biosynthesis and/or action may explain (in part) pathology associated with excess ethanol consumption. Ethanol affects many aspects of retinoid metabolism and mechanisms of action site-specifically, but no robust data support inhibition of vitamin A metabolism, resulting in decreased atRA in vivo during normal vitamin A nutriture. Actually, ethanol either has no effect on or increases atRA at select sites. Despite this realization, insight into whether interactions between ethanol and retinoids represent cause vs. effect requires additional research.
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