title: A simple, rapid and validated high-performance liquid chromatography method suitable for clinical measurements of human mercaptalbumin and non-mercaptalbumin.
abstract: Background Human mercaptalbumin and human non-mercaptalbumin have been reported as markers for various pathological conditions, such as kidney and liver diseases. These markers play important roles in redox regulations throughout the body. Despite the recognition of these markers in various pathophysiologic conditions, the measurements of human mercaptalbumin and non-mercaptalbumin have not been popular because of the technical complexity and long measurement time of conventional methods. Methods Based on previous reports, we explored the optimal analytical conditions for a high-performance liquid chromatography method using an anion-exchange column packed with a hydrophilic polyvinyl alcohol gel. The method was then validated using performance tests as well as measurements of various patients' serum samples. Results We successfully established a reliable high-performance liquid chromatography method with an analytical time of only 12 min per test. The repeatability (within-day variability) and reproducibility (day-to-day variability) were 0.30% and 0.27% (CV), respectively. A very good correlation was obtained with the results of the conventional method. Conclusions A practical method for the clinical measurement of human mercaptalbumin and non-mercaptalbumin was established. This high-performance liquid chromatography method is expected to be a powerful tool enabling the expansion of clinical usefulness and ensuring the elucidation of the roles of albumin in redox reactions throughout the human body.
authors.affiliation: Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Yasukawa
authors.affiliation: Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan.
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Shimosawa
authors.affiliation: Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Okubo
authors.affiliation: Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Yatomi
mesh_terms: D015415:Biomarkers / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D012709:Serum Albumin / Q000032:analysis*
chemical_list: D015415:Biomarkers; D012709:Serum Albumin; C001702:mercaptoalbumin
keywords: Albumin; high-performance liquid chromatography; human mercaptalbumin; non-mercaptalbumin