Rapid, fluorimetric-liquid chromatographic determination of malondialdehyde in biological samples

Rajiv Agarwal, Shawn D. Chase

Research output: Contribution to journalArticle

240 Citations (Scopus)

Abstract

Current chromatographic methods of estimation of malondialdehyde, a marker of oxidative lipid injury, often require extensive extraction procedures, column cleaning or specialized equipment. A rapid and sensitive HPLC method is described for the determination of MDA in plasma and urine. The mobile phase consisted of 40:60 ratio (v/v) of methanol to 50 mM potassium monobasic phosphate at pH 6.8, pumped at a rate of 1.0 ml/min on a Hewlett-Packard Hypersil 5 μ ODS 100×4.6 mm placed in a column warmer set to 37°C. Samples of plasma and urine were treated with the antioxidant, butylated hydroxytoluene and heat derivatized at 100°C for 1 h with thiobarbituric acid at an acid pH. Samples were extracted with n-butanol and 10 μl of the extract was injected at 1 min intervals using an autosampler. The Hewlett-Packard model 1046A programmable fluorescence detector was set at excitation of 515 nm and emission of 553 nm. Retention time was 1.87 min, however absence of interfering peaks, allowed analysis to be carried out in increments of 1 min per sample. Within day variability in estimation was between 8.6% and 10.3%. Between days variability was 3.6-7.9%. Recovery was between 88 and 101%. Samples of urine and plasma from ten normotensive volunteers were 1.94±0.79 μmol/g creatinine and 0.69±0.13 μmol/l respectively and were similar to those reported in the literature. MDA degrades at room temperature at a rate of 10% per hour. It is therefore, suggested that the total assay time be limited to 1 h beginning with sample preparation.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalJournal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
Volume775
Issue number1
DOIs
StatePublished - Jul 25 2002

Fingerprint

Malondialdehyde
Urine
Plasmas
Liquids
Butylated Hydroxytoluene
1-Butanol
Methanol
Volunteers
Cleaning
Assays
Creatinine
Antioxidants
Hot Temperature
Fluorescence
High Pressure Liquid Chromatography
Detectors
Lipids
Recovery
Equipment and Supplies
Temperature

Keywords

  • Malondialdehyde

ASJC Scopus subject areas

  • Biochemistry

Cite this

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title = "Rapid, fluorimetric-liquid chromatographic determination of malondialdehyde in biological samples",
abstract = "Current chromatographic methods of estimation of malondialdehyde, a marker of oxidative lipid injury, often require extensive extraction procedures, column cleaning or specialized equipment. A rapid and sensitive HPLC method is described for the determination of MDA in plasma and urine. The mobile phase consisted of 40:60 ratio (v/v) of methanol to 50 mM potassium monobasic phosphate at pH 6.8, pumped at a rate of 1.0 ml/min on a Hewlett-Packard Hypersil 5 μ ODS 100×4.6 mm placed in a column warmer set to 37°C. Samples of plasma and urine were treated with the antioxidant, butylated hydroxytoluene and heat derivatized at 100°C for 1 h with thiobarbituric acid at an acid pH. Samples were extracted with n-butanol and 10 μl of the extract was injected at 1 min intervals using an autosampler. The Hewlett-Packard model 1046A programmable fluorescence detector was set at excitation of 515 nm and emission of 553 nm. Retention time was 1.87 min, however absence of interfering peaks, allowed analysis to be carried out in increments of 1 min per sample. Within day variability in estimation was between 8.6{\%} and 10.3{\%}. Between days variability was 3.6-7.9{\%}. Recovery was between 88 and 101{\%}. Samples of urine and plasma from ten normotensive volunteers were 1.94±0.79 μmol/g creatinine and 0.69±0.13 μmol/l respectively and were similar to those reported in the literature. MDA degrades at room temperature at a rate of 10{\%} per hour. It is therefore, suggested that the total assay time be limited to 1 h beginning with sample preparation.",
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