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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Effects of ethanol and diabetes on galactose oxidative metabolism and elimination in rats.
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Effects of ethanol and diabetes on galactose oxidative metabolism and elimination in rats.

机译:乙醇和糖尿病对大鼠半乳糖氧化代谢和消除的影响。

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Blood galactose clearance after an intravenous galactose load has been widely used for years as an index of liver function. We developed a noninvasive [13C]galactose breath test, which explores galactose oxidative metabolism; this test is well correlated with liver fibrosis in patients with chronic viral hepatitis. The goal of this study was to evaluate the influence of nonhepatic factors such as diabetes and ethanol on whole-body galactose clearance (measured as the serum galactose elimination capacity test) and oxidative metabolism (measured as the [13C]galactose-induced breath 13CO2 production) in rats. Acute ethanol administration induced a significant decrease of galactose clearance and 13CO2 production. There was a significant correlation between the amount of ethanol given and the inhibition of galactose metabolism (R2 = 0.72, p < 0.0001). In streptozotocin-induced diabetic rats, the [13C]galactose-induced breath 13CO2 production was significantly reduced (p < 0.0001) and normalized by insulin treatment. However, diabetes did not decrease whole-body galactose clearance, indicating an isotopic dilution of [13C]glucose produced from [13C]galactose metabolism into the enlarged glucose pool. These results must be taken into account when using the [13C]galactose breath test as a quantitative liver function test.
机译:静脉内半乳糖负荷后血液中半乳糖清除率已被广泛用作肝功能指标多年。我们开发了一种非侵入性的[13C]半乳糖呼气试验,该试验探索了半乳糖的氧化代谢。该测试与慢性病毒性肝炎患者的肝纤维化密切相关。这项研究的目的是评估糖尿病和乙醇等非肝脏因素对全身半乳糖清除率(以血清半乳糖清除能力测试来衡量)和氧化代谢(以[13C]半乳糖诱导的呼吸中13CO2产生的影响)的影响。 )的老鼠。急性乙醇给药导致半乳糖清除率和13CO2产生显着降低。乙醇摄入量与半乳糖代谢抑制之间存在显着相关性(R2 = 0.72,p <0.0001)。在链脲佐菌素诱导的糖尿病大鼠中,[13C]半乳糖诱导的呼吸中13CO2的产生显着降低(p <0.0001),并通过胰岛素治疗使其恢复正常。然而,糖尿病并没有降低全身半乳糖清除率,表明由[13C]半乳糖代谢产生的[13C]葡萄糖同位素稀释到扩大的葡萄糖库中。当使用[13C]半乳糖呼气试验作为定量肝功能试验时,必须考虑这些结果。

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