4.7 Article

Detoxification of formate by formate dehydrogenase-loaded erythrocytes and carbicarb in folate-deficient methanol-intoxicated rats

期刊

CLINICA CHIMICA ACTA
卷 367, 期 1-2, 页码 162-169

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.cca.2005.12.007

关键词

carbicarb; carrier erythrocytes; folate; formate; formate dehydrogenase; methanol

向作者/读者索取更多资源

Background: Formic acid is a toxic metabolite responsible for the metabolic acidosis in methanol poisoning. Formate dehydrogenase (EC 1.2.1.2) converts formate into CO2 in the presence of NAD. We examined the in vitro and in vivo efficiency of formate dehydrogenase-loaded carrier erythrocytes along with carbicarb in eliminating the formate in methanol-intoxicated folate-deficient rats. Method: Formate dehydrogenase-loaded erythrocytes were prepared by hypotonic dialysis method. Carbicarb (carb) (equimolar solution of sodium carbonate and sodium bicarbonate) was used to treat metabolic acidosis. Folate depletion was induced by methotrexate (MTX) treatment. Experimental design consisted of 8 groups: saline control, methanol control, MTX control, ELE control, MTX-methanol control, MTX-methanol-carb, MTX-methanol-carb-ELE, and MTX-MeOH-ELE group. Male Wistar rats treated with MTX (0.3 mg/kg) for a week were injected (i.p.) with methanol (4 g/kg). Twelve hours later, the carbicarb solution was infused, and then a formate dehydrogenase-loaded erythrocytes suspension (40% hematocrit) was infused (i.v.) in bolus. Blood samples were collected every hour for 4 h from the cannulated left jugular vein. Blood methanol and formate were estimated respectively with HPLC and flourimetric assay. Blood pH, blood pO(2), pCO(2) and bicarbonate were also measured. Results: There was marked elimination of formate in selected groups. Conclusion: Formate dehydrogenase-loaded erythrocytes, along with carbicarb, facilitates removal of formate, in methanol poisoning. (c) 2005 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据