On the lack of formation of L-(+)-3-hydroxybutyrate by liver.

On the lack of formation of L-(+)-3-hydroxybutyrate by liver.
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肝脏缺乏 L-( )-3-羟基丁酸形成。

DOI:
10.1016/0003-9861(82)90030-3
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发表时间:
1982
影响因子:
3.9
通讯作者:
Landau,BR
Landau,BR
中科院分区:
生物学3区
文献类型:
--
作者:
Scofield,RF;Brady,PS;Schumann,WC;Kumaran,K;Ohgaku,S;Margolis,JM;Landau,BR

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棕榈酸的末端碳,用14c追踪,优先结合到羟基丁酸碳4中,羟基丁酸碳4是由肝细胞和18- 19日龄大鼠的灌注肝脏以及禁食成年大鼠的灌注肝脏形成的。然而,[13-14C]棕榈酸中的14C与羟基丁酸碳1的结合程度与用[1-14C]棕榈酸和[6-14C]棕榈酸评估的棕榈酸的前12个碳中的任何一个碳的结合程度相同。因此,羟基丁酸盐是通过羟甲基戊二酰辅酶a形成的,也就是说,它处于构型中,而棕榈酸盐β氧化过程中的中间体-羟丁基辅酶a的水解不会发生。此外,当羟基丁酸用d-(−)-3-羟基丁酸脱氢酶将二聚体转化为乙酰乙酸时,分离的肝细胞和幼鼠的肝脏中由14c标记的棕榈酸形成的羟基丁酸中保留了可忽略不计的14c。因此,正如使用这些制剂评估的那样,大鼠肝脏不会产生l-(+)-3-羟基丁酸盐。
The terminal carbon of palmitic acid, traced with14C, is preferentially incorporated into carbon 4 of hydroxybutyrate formed by hepatocytes and perfused livers from 18- to 19-day-old rats and perfused livers from fasted adult rats. However,14C from [13-14C]palmitic acid is incorporated into carbon 1 of the hydroxybutyrate to the same extent as any one of the first 12 carbons of palmitic acid as assessed with [1-14C]palmitic acid and [6-14C]palmitic acid. Therefore, the hydroxybutyrate is formed via hydroxymethylglutaryl-CoA, i.e., it is in thedconfiguration, and hydrolysis ofl-hydroxybutyryl-CoA, the intermediate in the β oxidation of the palmitate, does not occur. Further, a negligible amount of14C remains in hydroxybutyrate formed from14C-labeled palmitic acid by isolated hepatocytes and perfused livers from the young rats, when the hydroxybutyrate is treated withd-(−)-3-hydroxybutyrate dehydrogenase to convert thedisomer to acetoacetate. Thus,l-(+)-3-hydroxybutyrate is not produced by rat liver as assessed using these preparations.
L()-3-羟基丁酸、D(-)-3-羟基丁酸、乙酰乙酸酯和葡萄糖在 18 日龄大鼠中用于呼吸和脂质合成的利用。
DOI: 10.1016/s0021-9258(19)63335-1
发表时间: 1977
期刊: The Journal of biological chemistry
影响因子: --
作者:
R. Webber;J. Edmond
通讯作者: J. Edmond
DOI: 10.1016/0003-9861(80)90087-9
发表时间: 1980
影响因子: 3.9
作者:
W. Reed;Pinar T. Ozand
通讯作者: Pinar T. Ozand
DOI: --
发表时间: 1954
影响因子: 3.2
作者:
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通讯作者: L. Krampitz
发育过程中大鼠肝脏对 L-和 D-3-羟基丁酸的代谢。
DOI: --
发表时间: 1981
期刊: Biochemical Medicine
影响因子: --
作者:
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离体灌注乳鼠和成年大鼠肝脏中的半乳糖和葡萄糖代谢。
DOI: --
发表时间: 1978
期刊: Metabolism: Clinical and Experimental
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作者:
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通讯作者: S. Segal