In vivo and in vitro 31P magnetic resonance spectroscopic studies of the hepatic response of healthy rats and rats with acute hepatic damage to fructose loading
In vivo and in vitro 31P magnetic resonance spectroscopic studies of the hepatic response of healthy rats and rats with acute hepatic damage to fructose loading
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健康大鼠和急性肝损伤大鼠对果糖负荷肝反应的体内外31P磁共振波谱研究
DOI:
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发表时间:
1994
影响因子:
3.3
通讯作者:
M. Brauer
中科院分区:
文献类型:
--
作者:
Wuhua Lu;S. Locke;M. Brauer
The hepatic response to a fructose challenge for control rats, and rats subjected to an acute sublethal dose of carbon tetrachloride (CCI4) or bromobenzene (BB), was compared using dynamic in vivo 31P MRS. Fructose loading conditions were used in which control rats showed only a modest increase in hepatic phosphomonoester (PME), and a small decrease in ATP, Pi, and intracellular pH after fructose administration. Both CCI4, and BB‐treated rats showed a much greater fructose‐induced accumulation of PME than did controls. Trolox C, a free radical scavenger, prevented most of this PME increase. BB‐treated rats, given sufficient time to recover from the hepa‐totoxic insult, responded to the fructose load similarly to controls. Liver aldolase activities of control, toxicant‐treated rats, and toxicant plus Trolox C‐treated rats correlated inversely with PME accumulation after fructose loading (correlation coefficient: −0.834, P < 0.05). Perchloric acid extracts of rat livers studied by in vitro 31P MRS confirmed that the PME accumulation after fructose loading is mainly due to an increase in fructose 1‐phosphate. These studies are consistent with the aldolase‐catalyzed cleavage of fructose 1‐phosphate being rate‐limiting in hepatic fructose metabolism, and that the CCI, and BB treatment modify and inactivate the aldolase enzyme.
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DOI:
10.1152/ajpgi.1989.256.6.g949
发表时间:
1989
期刊:
The American journal of physiology
影响因子:
--
作者:
Thoma,WJ;Ugurbil,K
通讯作者:
Ugurbil,K
影响因子:
4.5
作者:
T. Monks;S. Lau
通讯作者:
T. Monks;S. Lau
DOI:
10.1016/0748-5514(85)90026-1
发表时间:
1985-01-01
期刊:
Journal of Free Radicals in Biology and Medicine
影响因子:
--
作者:
BRATTIN W J;GLENDE E A JR;RECKNAGEL R O
通讯作者:
RECKNAGEL R O
DOI:
10.1016/0167-4889(89)90084-0
发表时间:
1989
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Karczmar,GS;Kurtz,T;Tavares,NJ;Weiner,MW
通讯作者:
Weiner,MW
DOI:
10.1152/ajpgi.1992.263.3.g293
发表时间:
1992
期刊:
The American journal of physiology
影响因子:
--
作者:
Brass,CA;Crawford,JM;Narciso,J;Gollan,JL
通讯作者:
Gollan,JL