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Goodenough AK, Onorato JM, Ouyang Z, Chang S, Rodrigues AD, Kasichayanula S, Huang SP, Turley W, Burrell R, Bifano M, Jemal M, LaCreta F, Tymiak A, Wang-Iverson D. Quantification of 4-Beta-Hydroxycholesterol in Human Plasma Using Automated Sample Preparation and LC-ESI-MS/MS Analysis. Chem Res Toxicol 2011; 24:1575-85. [DOI: 10.1021/tx2001898] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Angela K. Goodenough
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Joelle M. Onorato
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Zheng Ouyang
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Shu Chang
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - A. David Rodrigues
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Sreeneeranj Kasichayanula
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Shu-Pang Huang
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Wesley Turley
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Richard Burrell
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Marc Bifano
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Mohammed Jemal
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Frank LaCreta
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - Adrienne Tymiak
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
| | - David Wang-Iverson
- Departments of †Bioanalytical and Discovery Analytical Sciences, ‡Metabolism and Pharmacokinetics, §Discovery Medicine and Clinical Pharmacology, ∥Global Biometric Sciences, and ⊥Department of Chemical Synthesis, Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543-4000, United States
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Jiang X, Ory DS, Han X. Characterization of oxysterols by electrospray ionization tandem mass spectrometry after one-step derivatization with dimethylglycine. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:141-52. [PMID: 17154356 PMCID: PMC2151840 DOI: 10.1002/rcm.2820] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report a novel approach to derivatize the primary, secondary, and tertiary hydroxy group(s) of oxysterols with N,N-dimethylglycine (DMG) in the presence of both 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and 4-(N,N-dimethylamino)pyridine to yield their corresponding mono- or di-DMG esters. Eight oxysterols including 7-oxocholesterol, 5alpha,6alpha- and 5beta,6beta-epoxycholesterols, as well as 7alpha-, 7beta-, 24(S)-, 25-, and 27-hydroxycholesterols, were studied. Electrospray ionization tandem mass spectrometric characterization of these singly or doubly protonated derivatives demonstrates the presence of an informative fragmentation pattern for each oxysterol derivative. Potential dissociation pathways for the production of these unique fragmentation patterns are proposed and discussed. Collectively, these informative and unique fragmentation patterns allow rapid and direct discrimination of the identities of 7alpha-, 7beta-, 24(S)-, 25-, and 27-hydroxycholesterol isomers, as well as 5alpha,6alpha- and 5beta,6beta-epoxycholesterol isomers, thereby potentially providing a foundation for quantitative analysis of oxysterols in biological samples in combination with a chromatographic separation.
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Affiliation(s)
- Xuntian Jiang
- Division of Bioorganic Chemistry and Molecular Pharmacology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Daniel S. Ory
- The Center for Cardiovascular Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Xianlin Han
- Division of Bioorganic Chemistry and Molecular Pharmacology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- *Correspondence to: X. Han, Division of Bioorganic Chemistry and Molecular Pharmacology, Department of Medicine, Washington University School of Medicine, Box 8020, 660 South Euclid Avenue, St. Louis, MO 63110, USA., E-mail:
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Tian Q, Failla ML, Bohn T, Schwartz SJ. High-performance liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometry determination of cholesterol uptake by Caco-2 cells. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:3056-60. [PMID: 16969766 DOI: 10.1002/rcm.2700] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A simple, sensitive and selective liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometric method (LC/APCI-MS/MS) was developed and applied to quantitative determination of uptake of cholesterol by Caco-2 human intestine cells. Caco-2 cells were cultured in medium containing cholesterol-3,4-13C2 and phytosterols from nutritional supplements after in vitro digestion. Cellular cholesterol (cholesterol-3,4-13C2) and endogenous cholesterol were extracted using methanol/chloroform (1:2, v/v) and directly analyzed using LC/APCI-MS/MS with selected reaction monitoring (SRM), using cholesterol-2,2,3,4,4,6-d6 as an internal standard. Detection and quantification limits were 2.2 and 7.2 pmol, respectively. This method provides an effective tool for rapid determination of cholesterol uptake by cells with increased selectivity and sensitivity in comparison to previously reported LC/APCI-MS analysis using selected ion monitoring (SIM).
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Affiliation(s)
- Qingguo Tian
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, USA
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Abstract
PURPOSE OF REVIEW Lipid oxidation is the cause of important deteriorative changes in chemical, sensory and nutritional food properties. In particular, the question of whether oxidized fats in the diet may be detrimental to health is nowadays of the upmost concern, but finding an answer is not easy and requires careful consideration of different aspects of lipid oxidation. RECENT FINDINGS In this review, the most recent works on the formation, nature and evaluation of oxidized dietary lipids are addressed; important issues such as the difficulties encountered in estimating their intake and the relationships between oxidants and antioxidants in the diet are discussed, and the latest studies on health implications of oxidized lipids are summarized. SUMMARY The current literature reflects various important points. At present, there is no information on the intake of oxidized fats, which is essential to know if the amount of oxidized lipids in normal diets is sufficient to cause the physiological effects claimed. Recently, relevant advances in analytical methodologies for quantitation of specific oxidation compounds have been reported, although their application to improve the analytical definition of the oxidized substrate used in nutritional studies is still a goal to be reached. Alternatively, one of the most promising current tendencies in this field is the study of the molecular targets by which dietary oxidized lipids can influence health. Overall, more selected research based on coordinated multidisciplinary studies is needed to define the role of dietary oxidized fats in health.
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