使用不同检测方法进行唾液皮质醇测量与无血清皮质醇测量的比较分析

IF 1.7 Q3 MEDICAL LABORATORY TECHNOLOGY Practical Laboratory Medicine Pub Date : 2024-04-09 DOI:10.1016/j.plabm.2024.e00393
Anna Lee , Sooah Jang , Sanghoo Lee , Hyun-Kyung Park , In-Young Kim , Ryunsup Ahn , Jeong-Ho Seok , Kyoung-Ryul Lee
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引用次数: 0

摘要

目的涎皮质醇反映了血清皮质醇的生物活性形式,为下丘脑-垂体-肾上腺(HPA)轴的昼夜节律提供了一种无创评估方法。液相色谱-串联质谱法(LC-MS/MS)以其特异性著称,而免疫测定法(IA)则因其简便性而常用。本研究旨在评估使用免疫测定法和 LC-MS/MS 测量唾液皮质醇的性能,并与无血清皮质醇测量进行比较。采用 IA 和 LC-MS/MS 分析了在不同时间点采集的唾液样本。对血清样本进行了皮质醇、皮质醇结合球蛋白和游离皮质醇分析。结果昼夜唾液皮质醇曲线表现出相似的昼夜节律模式;但是,用 IA 测得的浓度始终高于用 LC-MS/MS 测得的浓度。相关性分析表明,唾液皮质醇(IA)、唾液皮质醇(LC-MS/MS)和无血清皮质醇水平(LC-MS/MS)之间存在很强的相关性。结论 该研究肯定了唾液皮质醇测量中 IA 和 LC-MS/MS 在评估 HPA 轴活动动态变化方面的适用性,从而为目前关于检测技术的争论做出了贡献。发现的系统性偏差强调了根据特定研究或临床要求选择方法的重要性。
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Comparative analysis of salivary cortisol measurements using different assay methods in relation to serum-free cortisol measurement

Objectives

Salivary cortisol reflects the biologically active form of serum cortisol, offering a noninvasive evaluation method for the diurnal rhythm of the hypothalamic-pituitary-adrenal (HPA) axis. While liquid chromatography-tandem mass spectrometry (LC-MS/MS) is known for its specificity, immunoassays (IA) are commonly used because of their simplicity. This study aimed to assess the performance of salivary cortisol measurement using both IA and LC-MS/MS in comparison to serum-free cortisol measurement.

Methods

Assay results for 188 saliva and 94 serum samples from 47 participants were analyzed. Salivary samples collected at different time points were analyzed using IA and LC-MS/MS. Serum samples were analyzed for cortisol, cortisol-binding globulin, and free cortisol. The statistical analyses included correlations and method comparisons.

Results

The diurnal salivary cortisol profiles exhibited a comparable circadian rhythm pattern; however, the concentrations measured using IA were consistently higher than those measured using LC-MS/MS. The correlation analysis revealed robust associations among salivary cortisol (IA), salivary cortisol (LC-MS/MS), and serum-free cortisol levels (LC-MS/MS). However, the method comparison revealed a systematic bias between IA and LC-MS/MS in salivary cortisol measurement.

Conclusions

This study contributes to the ongoing debate on assay techniques by affirming the suitability of IA and LC-MS/MS for salivary cortisol measurement to assess dynamic changes in HPA axis activity. The identified systematic bias emphasizes the importance of selecting methods based on specific research or clinical requirements.

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来源期刊
Practical Laboratory Medicine
Practical Laboratory Medicine Health Professions-Radiological and Ultrasound Technology
CiteScore
3.50
自引率
0.00%
发文量
40
审稿时长
7 weeks
期刊介绍: Practical Laboratory Medicine is a high-quality, peer-reviewed, international open-access journal publishing original research, new methods and critical evaluations, case reports and short papers in the fields of clinical chemistry and laboratory medicine. The objective of the journal is to provide practical information of immediate relevance to workers in clinical laboratories. The primary scope of the journal covers clinical chemistry, hematology, molecular biology and genetics relevant to laboratory medicine, microbiology, immunology, therapeutic drug monitoring and toxicology, laboratory management and informatics. We welcome papers which describe critical evaluations of biomarkers and their role in the diagnosis and treatment of clinically significant disease, validation of commercial and in-house IVD methods, method comparisons, interference reports, the development of new reagents and reference materials, reference range studies and regulatory compliance reports. Manuscripts describing the development of new methods applicable to laboratory medicine (including point-of-care testing) are particularly encouraged, even if preliminary or small scale.
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