Analysis of coenzyme Q10 in lymphocytes by HPLC-MS/MS

被引：15

作者：

Arias, A. ^{[1
,2
]}

Garcia-Villoria, J. ^{[1
,2
]}

Rojo, A. ^{[1
]}

Bujan, N. ^{[1
,2
]}

Briones, P. ^{[1
,2
,3
]}

Ribes, A. ^{[1
,2
]}

机构：

[1] Hosp Clin Barcelona, IBC Seccio Errors Congenits Metab, Serv Bioquim & Genet Mol, Barcelona 08028, Spain

[2] CIBERER, Barcelona, Spain

[3] CSIC, Barcelona, Spain

来源：

JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES | 2012年 / 908卷

关键词：

Coenzyme Q(10); Lymphocytes; HPLC-MS/MS; RAT-TISSUES; MUSCLE; UBIQUINONE-9; DEFICIENCY; DIAGNOSIS; PLASMA; BLOOD; ASSAY;

D O I：

10.1016/j.jchromb.2012.09.027

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Coenzyme Q(10) (CoQ(10)) deficiency syndromes are potentially treatable disorders. Skeletal muscle is the most widely accepted tissue for their study, but sampling is an invasive procedure. Cultured skin fibroblasts seem to improve the biochemical diagnosis, but their growth requires a certain period of time. Our aim was to set up a minimally invasive, fast and reliable analytical procedure to measure CoQ(10) in lymphocytes, to prevent any delay in diagnosing primary CoQ(10) deficiency. HPLC-MS/MS analysis of CoQ(10) showed high sensitivity and specificity. The reference range was established in apparently healthy volunteers (n=33); the mean of CoQ(10) in lymphocytes was 107 nmol/g protein (95% confidence interval: 105-120) and 2.0 nmol/UCS (95% confidence interval: 2.06-2.46). Therefore, the range was narrower when normalized to units of citrate synthase (UCS) than when normalized to grams of protein. The method was linear from 0.01 to 1 mu M with a good precision and sensitivity (limit of quantification 0.01 mu M). Intra-assay and inter-assay coefficients of variation were lower than 13%. Recovery was higher than 95%. In our hands, lymphocytes seem to be a reliable matrix as they reflect intracellular content of CoQ(10). In addition, they can be obtained by a minimally invasive procedure (venipuncture). (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：23 / 26

页数：4

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