Development and validation of a gas chromatography-flame ionization detection method for quantifying sucrose in equine serum

被引:5
作者
Hewetson, Michael [1 ]
Aaltonen, Kaisa [1 ]
Tulamo, Riitta-Mari [1 ]
Sankari, Satu [1 ]
机构
[1] Univ Helsinki, Fac Vet Med, FIN-00014 Helsinki, Finland
关键词
Equine; gas chromatography-flame ionization detection; permeability; serum; sucrose; GASTRIC-ULCERATION; LIQUID-CHROMATOGRAPHY; TRIMETHYLSILYL DERIVATIVES; ENZYMATIC ASSAY; SUGAR ALCOHOLS; ORGANIC-ACIDS; BREATH TEST; PERMEABILITY; HORSES; PREVALENCE;
D O I
10.1177/1040638713519640
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
A simple and accurate method for quantifying sucrose in equine serum that can be applied to sucrose permeability testing in the horse was developed and validated using gas chromatography with flame ionization detection. The assay provided an acceptable degree of linearity, accuracy, and precision at concentrations of sucrose as low as 2.34 mol/l and as high as 20.45 mol/l. Percentage recovery of sucrose from serum ranged from 89% to 102%; repeatability and intermediate precision (relative standard deviation) ranged from 3.6% to 6.7% and 4.1% to 9.3%, respectively. The limit of detection was 0.73 mol/l. No interfering peaks were observed except lactose, which gave 2 peaks, one of which overlapped partially with sucrose. To evaluate the suitability of the method for quantifying sucrose in serum samples from horses with naturally occurring gastric ulceration, 10 horses with and without naturally occurring gastric ulceration were subjected to sucrose permeability testing. All horses demonstrated an increase in serum sucrose concentration over time following oral administration of sucrose; however, the increase from baseline was significant for horses with gastric ulceration at 45 min (P = 0.0082) and 90 min (P = 0.0082) when compared with healthy horses. It was concluded that gas chromatography with flame ionization detection is a valid method for quantifying sucrose in equine serum and can be applied directly to the analysis of sucrose in equine serum as part of a larger validation study aimed at developing a blood test for the diagnosis of gastric ulcers in horses.
引用
收藏
页码:232 / 239
页数:8
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