Novel Spectrophotometric Method for the Quantitation of Urinary Xanthurenic Acid and Its Application in Identifying Individuals with Hyperhomocysteinemia Associated with Vitamin B6 Deficiency
Joint Authors
Chen, Chi-Fen
Liu, Tsan-Zon
Lan, Wu-Hsiang
Wu, Li-An
Tsai, Chin-Hung
Chiou, Jeng-Fong
Tsai, Li-Yu
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-16
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A novel spectrophotometric method for the quantification of urinary xanthurenic acid (XA) is described.
The direct acid ferric reduction (DAFR) procedure was used to quantify XA after it was purified by a solid-phase extraction column.
The linearity of proposed method extends from 2.5 to 100.0 mg/L.
The method is precise, yielding day-to-day CVs for two pooled controls of 3.5% and 4.6%, respectively.
Correlation studies with an established HPLC method and a fluorometric procedure showed correlation coefficients of 0.98 and 0.98, respectively.
Interference from various urinary metabolites was insignificant.
In a small-scale screening of elderly conducted at Penghu county in Taiwan (n=80), we were able to identify a group of twenty individuals having hyperhomocysteinemia (>15 μmole/L).
Three of them were found to be positive for XA as analyzed by the proposed method, which correlated excellently with the results of the activation coefficient method for RBC’s AST/B6 functional test.
These data confirm the usefulness of the proposed method for identifying urinary XA as an indicator of vitamin B6 deficiency-associated hyperhomocysteinemic condition.
American Psychological Association (APA)
Chen, Chi-Fen& Liu, Tsan-Zon& Lan, Wu-Hsiang& Wu, Li-An& Tsai, Chin-Hung& Chiou, Jeng-Fong…[et al.]. 2013. Novel Spectrophotometric Method for the Quantitation of Urinary Xanthurenic Acid and Its Application in Identifying Individuals with Hyperhomocysteinemia Associated with Vitamin B6 Deficiency. BioMed Research International،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1004834
Modern Language Association (MLA)
Chen, Chi-Fen…[et al.]. Novel Spectrophotometric Method for the Quantitation of Urinary Xanthurenic Acid and Its Application in Identifying Individuals with Hyperhomocysteinemia Associated with Vitamin B6 Deficiency. BioMed Research International No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-1004834
American Medical Association (AMA)
Chen, Chi-Fen& Liu, Tsan-Zon& Lan, Wu-Hsiang& Wu, Li-An& Tsai, Chin-Hung& Chiou, Jeng-Fong…[et al.]. Novel Spectrophotometric Method for the Quantitation of Urinary Xanthurenic Acid and Its Application in Identifying Individuals with Hyperhomocysteinemia Associated with Vitamin B6 Deficiency. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1004834
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1004834