13C-NMR study of hypoglycemia-induced glycolytic changes in embryonic mouse heart.
13C-NMR study of hypoglycemia-induced glycolytic changes in embryonic mouse heart.
复制标题
低血糖引起的胚胎小鼠心脏糖酵解变化的 13C-NMR 研究。
DOI:
10.1002/tera.10103
复制
发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Smoak,IdaW
中科院分区:
文献类型:
--
作者:
Ghatnekar,GautamS;Gracz,HannaS;Smoak,IdaW
BackgroundGlucose metabolites can be detected in embryonic mouse tissues using13C‐NMR spectroscopy. The advantage of this method is in its chemical specificity and the ability to follow metabolic changes.MethodsIn this study, CD‐1 mice were mated and embryos excised on gestational day (GD) 10.5 (plug = GD 0.5). Hearts were isolated and cultured in 150 mg/dl glucose (normoglycemic medium) or 40 mg/dl glucose (hypoglycemic medium) for 6 hr.13C‐labeled glucose comprised 62%–64% of total glucose in the culture medium. Pre‐ and postculture media were treated with deuterated water (D2O), and13C spectra were obtained using a Bruker Avance 500 MHz spectrometer operating at 11.744 tesla (125.7 MHz for13C). NMR spectra demonstrated resonances for13C‐glucose in preculture normoglycemic and hypoglycemic media. Postculture spectra for normoglycemic and hypoglycemic media demonstrated13C‐glucose signals as well as a signal for13C‐lactate. Area under the curve (AUC) was measured for the [1‐13C‐glucose] resonance from preculture media and the [3‐13C‐lactate] resonance from postculture media. The ratios of AUC for postculture [3‐13C‐lactate] to preculture [1‐13C‐glucose] were calculated and found to be higher in hypoglycemic than in normoglycemic media.ResultsOur results confirm earlier findings using radiolabeled substrates and suggest that13C‐NMR spectroscopy can be used to study glucose metabolism in isolated embryonic hearts exposed to hypoglycemia.ConclusionsNMR effectively measures glucose and its metabolite, lactate, in the same spectrum and thus determines metabolic flux in the isolated embryonic heart after exposure to hypoglycemia and normoglycemia. This method could evaluate glucose metabolism in embryonic tissues following other teratogenic exposures. Teratology 66:267–272, 2002. © 2002 Wiley‐Liss, Inc.
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DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Leung,LL;Kinoshita,T;Nachman,RL
通讯作者:
Nachman,RL
影响因子:
20.3
作者:
Leung,LL;Harpel,PC;Nachman,RL;Rabellino,EM
通讯作者:
Rabellino,EM
DOI:
10.1515/bchm2.1972.353.2.1125
发表时间:
1972-01-01
影响因子:
--
作者:
HAUPT, H;HEIMBURGER, N
通讯作者:
HEIMBURGER, N
影响因子:
4.8
作者:
Henri;Lijnen;M. Hoylaerts;D. Collen
通讯作者:
D. Collen
影响因子:
20.3
作者:
Plow,EF;Collen,D
通讯作者:
Collen,D