Analysis of cholesterol, cholesterol-5,6-epoxides and cholestane-3 beta,5 alpha,6 beta-triol in nipple aspirates of human breast fluid by gas chromatography/mass spectrometry. 1987

L D Gruenke, and J C Craig, and N L Petrakis, and M B Lyon
Department of Pharmaceutical Chemistry, School of Pharmacy, University of California, San Francisco 94143.

A method has been developed for the quantitative determination of cholesterol and three of its major oxidative metabolites (the 5 alpha,6 alpha-epoxide, the 3 beta,5 alpha,6 beta-triol, and the 5 beta,6 beta-epoxide) in a single sample of human breast fluid (2-50 microliters), using gas chromatography/mass spectrometry with selected ion monitoring. High specificity and reliable quantification is achieved by the use of the inverse stable isotope dilution method, employing deuterium-labeled variants of the compounds as internal standards.

UI MeSH Term Description Entries
D008401 Gas Chromatography-Mass Spectrometry A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds. Chromatography, Gas-Liquid-Mass Spectrometry,Chromatography, Gas-Mass Spectrometry,GCMS,Spectrometry, Mass-Gas Chromatography,Spectrum Analysis, Mass-Gas Chromatography,Gas-Liquid Chromatography-Mass Spectrometry,Mass Spectrometry-Gas Chromatography,Chromatography, Gas Liquid Mass Spectrometry,Chromatography, Gas Mass Spectrometry,Chromatography, Mass Spectrometry-Gas,Chromatography-Mass Spectrometry, Gas,Chromatography-Mass Spectrometry, Gas-Liquid,Gas Chromatography Mass Spectrometry,Gas Liquid Chromatography Mass Spectrometry,Mass Spectrometry Gas Chromatography,Spectrometries, Mass-Gas Chromatography,Spectrometry, Gas Chromatography-Mass,Spectrometry, Gas-Liquid Chromatography-Mass,Spectrometry, Mass Gas Chromatography,Spectrometry-Gas Chromatography, Mass,Spectrum Analysis, Mass Gas Chromatography
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009558 Nipples The conic organs which usually give outlet to milk from the mammary glands. Areola,Areolae,Nipple
D001826 Body Fluids Liquid components of living organisms. Body Fluid,Fluid, Body,Fluids, Body
D001940 Breast In humans, one of the paired regions in the anterior portion of the THORAX. The breasts consist of the MAMMARY GLANDS, the SKIN, the MUSCLES, the ADIPOSE TISSUE, and the CONNECTIVE TISSUES. Breasts
D002777 Cholestanols Cholestanes substituted in any position with one or more hydroxy groups. They are found in feces and bile. In contrast to bile acids and salts, they are not reabsorbed. Bile Alcohol,Bile Alcohols,Hydroxycholestane,Hydroxycholestanes,Alcohol, Bile,Alcohols, Bile
D002784 Cholesterol The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. Epicholesterol
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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