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通过用[³H] - 和[¹⁴C] - 2 - 脱氧 - D - 葡萄糖连续脉冲进行己糖磷酸化速率的体外估计。

In vitro estimation of the rate of hexose phosphorylation, by sequential pulsing with [3H]- and [14C]2-deoxy-D-glucose.

作者信息

Cornford E M, Crane P D

出版信息

Comp Biochem Physiol B. 1985;82(1):25-8. doi: 10.1016/0305-0491(85)90122-1.

DOI:10.1016/0305-0491(85)90122-1
PMID:4053573
Abstract

The rate of phosphorylation of 2-deoxy-D-glucose (2dGlc) was determined by incubating Schistosoma mansoni in vitro in [3H]2-deoxy-D-glucose; 60 sec after exposure to the [3H]dGlc, [14C]dGlc was added to the medium, and metabolic activity was arrested at 2 min by immersion of the tissue in ice-cold silicone oil. Column chromatographic separation of the neutral [3H]- and [14C]dGlc from the [3H]- and [14C]2-deoxy-D-glucose-6-phosphate permitted estimation of the quantity of [3H]dGlc phosphorylated in 2 min, and the proportion of [14C]dGlc phosphorylated in 1 min; thus a phosphorylation rate was determined from a single tissue sample. In male schistosomes derived from mouse infections 4.4 +/- 0.8% of the dGlc was phosphorylated each minute, and 4.2 +/- 0.9% in the females. Lower rates of phosphorylation were measured in schistosomes taken from hamsters where males phosphorylated 2.4 +/- 1.1% of the dGlc each minute, and in females 2.7 +/- 1.0%. These studies suggest the high rate of hexose utilization by schistosomes compares to the conscious rat brain, where 11% of the dGlc is phosphorylated each minute.

摘要

通过在体外将曼氏血吸虫置于[³H]2-脱氧-D-葡萄糖中孵育来测定2-脱氧-D-葡萄糖(2dGlc)的磷酸化速率;在暴露于[³H]dGlc 60秒后,向培养基中加入[¹⁴C]dGlc,然后在2分钟时通过将组织浸入冰冷的硅油中来停止代谢活性。通过柱色谱法从[³H]-和[¹⁴C]2-脱氧-D-葡萄糖-6-磷酸中分离出中性的[³H]-和[¹⁴C]dGlc,从而可以估算出2分钟内磷酸化的[³H]dGlc的量以及1分钟内磷酸化的[¹⁴C]dGlc的比例;因此,从单个组织样本中确定了磷酸化速率。在源自小鼠感染的雄性血吸虫中,每分钟有4.4±0.8%的dGlc被磷酸化,雌性为4.2±0.9%。在从仓鼠体内获取的血吸虫中测得的磷酸化速率较低,其中雄性每分钟磷酸化2.4±1.1%的dGlc,雌性为2.7±1.0%。这些研究表明,与清醒大鼠大脑相比,血吸虫的己糖利用率很高,清醒大鼠大脑每分钟有11%的dGlc被磷酸化。

相似文献

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In vitro estimation of the rate of hexose phosphorylation, by sequential pulsing with [3H]- and [14C]2-deoxy-D-glucose.通过用[³H] - 和[¹⁴C] - 2 - 脱氧 - D - 葡萄糖连续脉冲进行己糖磷酸化速率的体外估计。
Comp Biochem Physiol B. 1985;82(1):25-8. doi: 10.1016/0305-0491(85)90122-1.
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引用本文的文献

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Sexual Preferences in Nutrient Utilization Regulate Oxygen Consumption and Reactive Oxygen Species Generation in Schistosoma mansoni: Potential Implications for Parasite Redox Biology.曼氏血吸虫营养利用中的性偏好调节氧气消耗和活性氧生成:对寄生虫氧化还原生物学的潜在影响
PLoS One. 2016 Jul 5;11(7):e0158429. doi: 10.1371/journal.pone.0158429. eCollection 2016.