1
|
Mehdinia A, Rostami S, Dadkhah S, Fumani NS. Simultaneous screening of homotaurine and taurine in marine macro-algae using liquid chromatography–fluorescence detection. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1150-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
2
|
Biomimetic membranes based on molecularly imprinted conducting polymers as a sensing element for determination of taurine. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
3
|
Yu YY, Zheng XX, Bian TT, Li YJ, Wu XW, Yang DZ, Jiang SS, Tang DQ. Development and application of a LC-MS/MS assay for the simultaneous quantification of edaravone and taurine in beagle plasma. J Sep Sci 2013; 36:3837-44. [DOI: 10.1002/jssc.201300983] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 09/30/2013] [Accepted: 10/02/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Yan-yan Yu
- Department of Pharmaceutical Analysis; Xuzhou Medical College; Xuzhou Jiangsu China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Xiao-xiao Zheng
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Ting-ting Bian
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Yin-jie Li
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Xiao-wen Wu
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Dong-zhi Yang
- Department of Pharmaceutical Analysis; Xuzhou Medical College; Xuzhou Jiangsu China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| | - Shui-shi Jiang
- Nanjing Yoko Pharmaceutical Co. Ltd; Nanjing Jiangsu China
| | - Dao-quan Tang
- Department of Pharmaceutical Analysis; Xuzhou Medical College; Xuzhou Jiangsu China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou Jiangsu China
| |
Collapse
|
4
|
Bioanalytical LC separation techniques for quantitative analysis of free amino acids in human plasma. Bioanalysis 2013; 5:495-512. [DOI: 10.4155/bio.12.333] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The quantitative analysis of free amino acids in human plasma has become an important and essential analysis parameter in different areas of life sciences. Free amino acid concentrations in human plasma samples are generally determined by means of GC or LC after chemical derivatization followed by UV, fluorescent or MS detection of the amino acid derivatives. Derivatization of free amino acids is done either pre- or post-column, and the amino acid derivatives obtained posess improved chromatographic behavior, increased detection sensitivity and selectivity compared with non-derivatized free amino acids. This work gives an overview of different chemical derivatization methods applied and their liquid separation techniques in bioanalytical assays for quantitative free amino acid analysis in human plasma samples. Important plasma preparation procedures, pre- and post-column derivatization, and different LC separation techniques are presented.
Collapse
|
5
|
Korös A, Hanczkó R, Jámbor A, Qian Y, Perl A, Molnár-Perl I. Analysis of amino acids and biogenic amines in biological tissues as their o-phthalaldehyde/ethanethiol/fluorenylmethyl chloroformate derivatives by high-performance liquid chromatography. A deproteinization study. J Chromatogr A 2006; 1149:46-55. [PMID: 17145062 DOI: 10.1016/j.chroma.2006.11.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Revised: 11/02/2006] [Accepted: 11/07/2006] [Indexed: 11/28/2022]
Abstract
The extraction of ornithine, lysine, putrescine, cadaverine, 1,7-diaminoheptane, spermidine and spermine from biological tissues was optimized for HPLC quantitation as their o-phthalaldehyde/ethanethiol/fluorenylmethyl chloroformate (OPA/ET/FMOC) derivatives. In applying perchloric acid deproteinization two approaches have been followed: (i) deproteinization with subsequent neutralization by potassium hydroxide and lyophilization, and (ii) deproteinization without neutralization and lyophilization. Neutralization and lyophilization resulted in the loss of free biogenic amines. HPLC analysis of ornithine (Orn), lysine (Lys), putrescine (Put), cadaverine (Cad), 1,7-diaminoheptane (Dah), spermidine (Spd) and spermine (Spm) content of biological tissues as their OPA/ET/FMOC derivatives was performed in the supernatant of perchloric acid-deproteinized samples (model solutions and tissues) with an average reproducibility of < or =2.6% relative standard deviation (RSD), including recovery of sample treatment and chromatography.
Collapse
Affiliation(s)
- A Korös
- Institute of Chemistry, Department of Analytical Chemistry, L. Eötvös University, Budapest, Hungary
| | | | | | | | | | | |
Collapse
|
6
|
Inoue H, Fukunaga K, Tsuruta Y. Determination of taurine in plasma by high-performance liquid chromatography using 4-(5,6-dimethoxy-2-phthalimidinyl)-2-methoxyphenylsulfonyl chloride as a fluorescent labeling reagent. Anal Biochem 2003; 319:138-42. [PMID: 12842117 DOI: 10.1016/s0003-2697(03)00277-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A sensitive high-performance liquid chromatography method for the determination of taurine in human plasma was developed. Taurine and N-methyltaurine (internal standard) were derivatized with 4-(5,6-dimethoxy-2-phthalimidinyl)-2-methoxyphenylsulfonyl chloride to produce fluorescent sulfonamides. The labeling reaction was carried out at 70 degrees C for 20 min at pH 7.5. The fluorescent derivatives were separated on a reversed-phase column by a stepwise elution using (A) acidic phosphate buffer/acetonitrile (83/17) and (B) acetonitrile and detected by fluorescence measurement at excitation and emission wavelengths of 318 and 392 nm, respectively. The detection limit (signal-to-noise ratio=3) of taurine was 3 fmol per injection. The within-day and day-to-day relative standard deviations were 3.0-4.8 and 2.5-4.7%, respectively. The concentration (means) of taurine in normal human plasma was 48.9+/-7.5 microM.
Collapse
Affiliation(s)
- Hirofumi Inoue
- Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0092, Japan
| | | | | |
Collapse
|
7
|
Kelly MT, Fabre H, Perrett D. Determination of taurine in plasma by capillary zone electrophoresis following derivatisation with fluorescamine. Electrophoresis 2000; 21:699-705. [PMID: 10733209 DOI: 10.1002/(sici)1522-2683(20000301)21:4<699::aid-elps699>3.0.co;2-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A novel capillary zone electrophoresis method is described for the determination of taurine in plasma. The method is rapidly executed and is highly selective for taurine as separation is based on the difference in ionisation of this amino acid from that of other amino acids. Following addition of homotaurine as internal standard, plasma proteins were precipitated with acetonitrile and the supernatant was derivatised with fluorescamine in the presence of a borate buffer. Capillary electrophoresis (CE) separations were carried out in reverse polarity mode at 27.5 kV on a Beckman P/ACE MDQ CE instrument, equipped with a diode array detector (DAD) set at 266 nm. The sample tray was cooled to 5 degrees C and separations were carried out at 20 degrees C. The fused-silica capillary was 50.2 cm in length (40.2 cm to detector) with an internal diameter of 75 microm. A capillary conditioning solution was applied daily in order to suppress the residual electroosmotic flow (EOF). The method, which was validated using feline plasma as the blank matrix, was shown to be linear and reproducible over the concentration range 2.5-100 microg/mL. The coefficients of variation (CVs) of replicate analyses were less than 4.5% at 1 microg/mL taurine in feline plasma and less than 3% for 2.5 microg/mL in human plasma. Recovery was estimated at 99.2% with a CV of 4.85%. It has been demonstrated that quantitation in aqueous solution yields similar results to those obtained by interpolation on a plasma calibration curve provided that subtraction for the taurine peak in unspiked plasma is carried out and that a suitable internal standard is employed.
Collapse
Affiliation(s)
- M T Kelly
- Department of Chemistry, Royal College of Surgeons in Ireland, Green, Dublin
| | | | | |
Collapse
|
8
|
McMahon GP, O'Kennedy R, Kelly MT. High-performance liquid chromatographic determination of taurine in human plasma using pre-column extraction and derivatization. J Pharm Biomed Anal 1996; 14:1287-94. [PMID: 8818047 DOI: 10.1016/0731-7085(95)01697-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Plasma samples (100 microliters) were treated with 150 microliters of acetonitrile and centrifuged at 5800 g for 10 min and 50 microliters of 10 mM borate buffer (pH 9.2) were added to the supernatant solution. This was followed by the addition of a 50 microliters aliquot of 5 mM fluorescamine in acetonitrile and immediate vortex mixing. A 20 microliters sample was injected on to a reversed-phase HPLC system using a Bondclone C-18 10 microns analytical column (300 mm x 3.9 mm). The mobile phase was tetrahydrofuran-acetonitrile-phosphate buffer (15 mM, pH 3.5) (4:24:72, v/v/v). The taurine derivative was detected by measuring the UV absorbance of 385 nm. Platelet-poor plasma samples were spiked with known amounts of taurine and inter- and intra-assay calibration curves were obtained. The method was applied to the determination of taurine in platelet-rich plasma.
Collapse
Affiliation(s)
- G P McMahon
- Department of Chemistry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | | |
Collapse
|
9
|
Waterfield CJ. Determination of taurine in biological samples and isolated hepatocytes by high-performance liquid chromatography with fluorimetric detection. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1994; 657:37-45. [PMID: 7952082 DOI: 10.1016/0378-4347(94)80067-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A high-performance liquid chromatographic method with fluorimetric detection is described for the routine and selective determination of taurine in urine, serum, tissues and isolated hepatocytes. The preparation and use of ion-exchange resins to extract taurine from biological samples is included. Taurine was derivatised with o-phthalaldehyde/2-mercaptoethanol prior to injection onto a C18 column (LiChrospherR 100 RP-18, 5 microns, 125 x 4 mm I.D.). Isocratic elution of the adduct was carried out using NaH2PO4 (0.05 M, pH 5.4) in methanol and water (43:57, v/v). Homoserine was used as an internal standard to facilitate the standardisation and quantitation of samples and analysis was completed in 6 min with homoserine and taurine eluting after 3 and 4 min, respectively. The method will detect 0.5 pmol of taurine on the column. Appropriate dilutions of these biological samples enable these samples to be assayed on an autosampler, using the same standard curve. Concentrations of taurine in human, dog and rat urine, rat liver, serum and isolated hepatocytes are reported.
Collapse
Affiliation(s)
- C J Waterfield
- Department of Toxicology, School of Pharmacy, University of London, UK
| |
Collapse
|
10
|
Polanuer B, Ivanov S, Sholin A. Rapid assay of dinitrophenyl derivative of taurine by high-performance liquid chromatography. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1994; 656:81-5. [PMID: 7952051 DOI: 10.1016/0378-4347(94)00081-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A rapid and simple method for the determination of taurine (2-aminoethanesulphonic acid) in complex samples is described. It is based on the HPLC separation of the dinitrophenyl (DNP) derivative of taurine. The reaction conditions are selected to allow complete derivatization of taurine within 15 min. DNP-taurine samples are stable for at least 3 days. DNP-taurine was separated by reversed-phase liquid chromatography within 12 s. The recovery of taurine was 102 +/- 3% (S.D. = 2.5%, n = 6) and the detection limit was 10 pmol for taurine (signal-to-noise ratio of 10). The method was applied to the determination of taurine levels in different samples including marine products, infant formulas and fermentation media of different bacterial species.
Collapse
Affiliation(s)
- B Polanuer
- Institute for Genetics of Industrial Microorganisms, Moscow, Russian Federation
| | | | | |
Collapse
|
11
|
Cantin AM. Taurine modulation of hypochlorous acid-induced lung epithelial cell injury in vitro. Role of anion transport. J Clin Invest 1994; 93:606-14. [PMID: 8113398 PMCID: PMC293884 DOI: 10.1172/jci117013] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Airway secretions of cystic fibrosis patients were found to contain high concentrations of taurine, which decreased with antibiotic therapy during acute respiratory exacerbations. Taurine, in a 1:1 molar ratio with HOCl/OCl-, caused a 10-fold increase in the amount of HOCl/OCl- needed to induce cytotoxicity to the cat lung epithelial cell line, AKD. Although DMSO protected cells against HOCl/OCl(-)-mediated injury, the presence of an equimolar concentration of taurine with HOCl/OCl- prevented DMSO from protecting cells and sulfhydryl groups against oxidation, suggesting the formation of taurine chloramines. Spectral properties confirmed the formation of monochloramines and dichloramines. Chloride-free buffer, DIDS, and low temperature (4 degrees C) each protected the cells against taurine/HOCl/OCl-, indicating that taurine chloramine uptake through anion transport pathways was required to induce cytotoxicity. A molar excess of taurine inhibited cytotoxicity, to induce cytotoxicity. A molar excess of taurine inhibited cytotoxicity, by decreasing taurine dichloramines and increasing the formation of less toxic taurine monochloramines. We conclude that taurine can protect lung epithelial cells by converting HOCl/OCl- to anionic monochloramines, but that taurine dichloramines can be toxic to respiratory epithelial cells through mechanisms that depend upon epithelial cell anion transport.
Collapse
Affiliation(s)
- A M Cantin
- Unité de Recherche Pulmonaire, Centre Hospitalier Universitaire de Sherbrooke, Quebec, Canada
| |
Collapse
|
12
|
|
13
|
Abstract
1. The intracellular taurine concentration in chick erythrocytes increased with age. 2. Erythrocyte taurine influx and efflux rates increased with age. 3. Erythrocyte taurine influx decreased when the extracellular sodium concentration was below normal physiological concentrations. 4. Under hypo-osmotic conditions, taurine efflux from erythrocytes increased. 5. The data suggest that chick erythrocyte taurine metabolism changes during early post-hatch development and that one taurine function may be as an osmoregulator.
Collapse
Affiliation(s)
- D W Porter
- Division of Animal and Veterinary Sciences, West Virginia University, Morgantown 26506-6108
| | | |
Collapse
|
14
|
Banks MA, Porter DW, Martin WG, Castranova V. Taurine protects against oxidant injury to rat alveolar pneumocytes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1992; 315:341-54. [PMID: 1509953 DOI: 10.1007/978-1-4615-3436-5_40] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- M A Banks
- Division of Food Chemistry, American Bacteriological and Chemical Research Corp., Gainesville, FL 32608
| | | | | | | |
Collapse
|
15
|
Ozone-induced lipid peroxidation and membrane leakage in isolated rat alveolar macrophages: protective effects of taurine. J Nutr Biochem 1991. [DOI: 10.1016/0955-2863(91)90072-d] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
16
|
Porter DW, Walker SA, Martin WG, Lee P, Kaczmarczyk W. Taurine uptake in chicken leukocytes and erythrocytes. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1991; 98:305-9. [PMID: 1673894 DOI: 10.1016/0300-9629(91)90537-m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1. The intracellular taurine concentration and rate of taurine uptake of chicken erythrocytes and two leukocyte populations were determined from one to six weeks of age. 2. Plasma taurine concentrations increased significantly from the time of hatching to week 2 and remained constant thereafter. 3. Intracellular taurine concentrations in both leukocyte populations increased significantly with age without any significant change in the erythrocytes. 4. Taurine uptake rate for erythrocytes was significantly higher at weeks 1-3 while both leukocyte populations showed no significant change during the six week period studied.
Collapse
Affiliation(s)
- D W Porter
- Division of Animal and Veterinary Sciences, College of Agriculture and Forestry, West Virginia University, Morgantown 26506-6108
| | | | | | | | | |
Collapse
|
17
|
Banks MA, Porter DW, Pailes WH, Schwegler-Berry D, Martin WG, Castranova V. Taurine content of isolated rat alveolar type I cells. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1991; 100:795-9. [PMID: 1782762 DOI: 10.1016/0305-0491(91)90292-l] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1. Rat alveolar type I cells were isolated by enzymatic digestion and purified by centrifugal elutriation and specific surface adsorption. 2. The identity of the harvested cells was confirmed using electronic cell sizing and transmission electron microscopy. 3. Purified cell preparations contained 4.6 +/- 2.3 x 10(6) type I cells/rat lung with a purity of 79 +/- 3%. 4. Isolated type I cells exhibited the following characteristics: mean cell volume = 716 +/- 48 microns 3; diameter = 11.1 +/- 0.7 microns; and cell water content = 0.50 +/- 0.03 microliter/10(6) cells. 5. Taurine content of these alveolar type I cells was measured by HPLC. 6. The intracellular taurine concentration of type I cells was 0.14 +/- 0.07 mM, a value close to that of plasma (0.1 mM).
Collapse
Affiliation(s)
- M A Banks
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV 26505
| | | | | | | | | | | |
Collapse
|
18
|
Banks MA, Porter DW, Martin WG, Castranova V. Effects of in vitro ozone exposure on peroxidative damage, membrane leakage, and taurine content of rat alveolar macrophages. Toxicol Appl Pharmacol 1990; 105:55-65. [PMID: 2144064 DOI: 10.1016/0041-008x(90)90358-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Rat alveolar macrophages (AM) were isolated by pulmonary lavage, allowed to adhere to a tissue culture flask, and then exposed to 0.45 +/- 0.05 ppm ozone. After exposures ranging from 0 to 60 min, the medium was decanted and cells were harvested. Cells were assayed for oxidant damage and media analyzed for leakage of intracellular components. Increasing length of exposure to ozone resulted in a decreased number of adherent AM and decreased cell viability. Resting and zymosan-stimulated chemiluminescence increased immediately after ozone exposure and reached a maximum at 15-30 min, then declined to initial levels after 60 min of ozone exposure. Lipid peroxidation and leakage of protein and K+ ions increased with increasing length of exposure to ozone, while leakage of reduced and oxidized glutathione increased through 30 min, then declined (reduced) or leveled off (oxidized). Activity of the Na+/K+ ATPase decreased with time while intracellular taurine concentration exhibited an initial rise, peaked at 30 min, and then returned to the untreated level. Leakage of taurine into the medium increased with time of exposure, suggesting that exposure of AM to ozone results in a shift from bound to free intracellular taurine. These data indicate that in vitro exposure of AM to ozone results in a time-dependent alteration of cell function, membrane integrity, and viability.
Collapse
Affiliation(s)
- M A Banks
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | | | | | | |
Collapse
|
19
|
Piao JH, Hill KE, Hunt RW, Burk RF. Effect of selenium deficiency on tissue taurine concentration and urinary taurine excretion in the rat. J Nutr Biochem 1990; 1:427-32. [PMID: 15539233 DOI: 10.1016/0955-2863(90)90118-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/1990] [Accepted: 03/14/1990] [Indexed: 10/27/2022]
Abstract
The purpose of this study was to determine the effect of selenium deficiency on tissue taurine levels and urinary taurine excretion. Weanling male Sprague-Dawley rats were fed selenium-deficient or selenium-adequate diets for 20 weeks. As selenium deficiency developed, urinary taurine excretion increased in selenium-deficient rats compared to controls. At 12 weeks, the selenium-deficient rats excreted 1.7-fold more taurine than control rats. At the same time plasma glutathione peroxidase was 1.2% of control and plasma glutathione was 226% of control. At 20 weeks, renal taurine was decreased but renal glutathione was increased in selenium-deficient rats compared to controls. Feeding the experimental diet for 6 weeks without methionine supplementation caused a fall in urinary taurine excretion. However, there was no difference between selenium-deficient and control rats. These results indicate that selenium deficiency affects renal handling of taurine in the rat when dietary sulfur amino acids are not restricted.
Collapse
Affiliation(s)
- J H Piao
- Division of Gastroenterology, Department of Medicine and Center in Molecular Toxicology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | | | | | | |
Collapse
|
20
|
Amiss TJ, Tyczkowska KL, Aucoin DP. Analysis of taurine in feline plasma and whole blood by liquid chromatography with fluorimetric detection and confirmation by thermospray mass spectrometry. JOURNAL OF CHROMATOGRAPHY 1990; 526:375-82. [PMID: 2361980 DOI: 10.1016/s0378-4347(00)82521-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A liquid chromatographic method with fluorimetric detection was developed to measure taurine (2-aminoethanesulfonic acid) in feline plasma and whole blood. Plasma or lysed whole blood was diluted with a mixture of acetonitrile-methanol-triethylamine-water (25:22:3:50, v/v), filtered through a 10,000 dalton exclusion filter and derivatized with dansyl chloride for 30 min at room temperature. Dansyl taurine was separated from other compounds by reversed-phase liquid chromatography using an octadecyl column and a methanol-acetic acid-triethylamine (30:0.5:0.025, v/v) aqueous mobile phase. The effluent was monitored fluorimetrically at an excitation wavelength of 329 nm and an emission wavelength of 530 nm. The presence of mono-dansylated taurine in feline plasma was confirmed by thermospray mass spectrometry. The limit of detection was 16 nmol/ml and the detector response was linear from 40 to 4000 nmol/ml taurine.
Collapse
Affiliation(s)
- T J Amiss
- Department of Anatomy, College of Veterinary Medicine, North Carolina State University, Raleigh 27606
| | | | | |
Collapse
|