Literature DB >> 2932180

Keto acids in tissues and biological fluids: O-t-butyldimethylsilyl quinoxalinols as derivatives for sensitive gas chromatographic/mass spectrometric determination.

U Langenbeck, H Luthe, G Schaper.   

Abstract

Quinoxalinol t-butyldimethylsilyl ethers were prepared from three branched-chain and from two aliphatic unbranched 2-keto acids. The electron impact (EI) mass spectra display pronounced [M-57]+ ions. With 39-51% of total ion current contained within them, sensitivity is greater than on chemical ionization (CI) mass spectrometry of O-trimethylsilyl derivatives. Mass spectra and chromatographic behaviour of these novel keto acid derivatives are discussed and preliminary quantitative data from rat muscle are given.

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Year:  1985        PMID： 2932180     DOI： 10.1002/bms.1200120912

Source DB:  PubMed          Journal:  Biomed Mass Spectrom        ISSN： 0306-042X


  9 in total

1.  Effect of weight loss on the rate of muscle protein synthesis during fasted and fed conditions in obese older adults.

Authors:  Dennis T Villareal; Gordon I Smith; Krupa Shah; Bettina Mittendorfer
Journal:  Obesity (Silver Spring)       Date:  2011-09-22       Impact factor: 5.002

2.  Measurement of human surfactant protein-B turnover in vivo from tracheal aspirates using targeted proteomics.

Authors:  Daniela M Tomazela; Bruce W Patterson; Elizabeth Hanson; Kimberly L Spence; Tiffany B Kanion; David H Salinger; Paolo Vicini; Hugh Barret; Hillary B Heins; F Sessions Cole; Aaron Hamvas; Michael J MacCoss
Journal:  Anal Chem       Date:  2010-03-15       Impact factor: 6.986

3.  Timing of the initial muscle biopsy does not affect the measured muscle protein fractional synthesis rate during basal, postabsorptive conditions.

Authors:  Gordon I Smith; Dennis T Villareal; Charles P Lambert; Dominic N Reeds; B Selma Mohammed; Bettina Mittendorfer
Journal:  J Appl Physiol (1985)       Date:  2009-11-25

4.  Regular multicomponent exercise increases physical fitness and muscle protein anabolism in frail, obese, older adults.

Authors:  Dennis T Villareal; Gordon I Smith; David R Sinacore; Krupa Shah; Bettina Mittendorfer
Journal:  Obesity (Silver Spring)       Date:  2010-05-20       Impact factor: 5.002

5.  Muscle protein synthesis response to exercise training in obese, older men and women.

Authors:  Gordon I Smith; Dennis T Villareal; David R Sinacore; Krupa Shah; Bettina Mittendorfer
Journal:  Med Sci Sports Exerc       Date:  2012-07       Impact factor: 5.411

6.  Isolation of aminoacyl-tRNA and its labeling with stable-isotope tracers: Use in studies of human tissue protein synthesis.

Authors:  P W Watt; Y Lindsay; C M Scrimgeour; P A Chien; J N Gibson; D J Taylor; M J Rennie
Journal:  Proc Natl Acad Sci U S A       Date:  1991-07-01       Impact factor: 11.205

7.  Mechanisms permitting nephrotic patients to achieve nitrogen equilibrium with a protein-restricted diet.

Authors:  B J Maroni; C Staffeld; V R Young; A Manatunga; K Tom
Journal:  J Clin Invest       Date:  1997-05-15       Impact factor: 14.808

8.  Testosterone increases the muscle protein synthesis rate but does not affect very-low-density lipoprotein metabolism in obese premenopausal women.

Authors:  Xuewen Wang; Gordon I Smith; Bruce W Patterson; Dominic N Reeds; Janine Kampelman; Faidon Magkos; Bettina Mittendorfer
Journal:  Am J Physiol Endocrinol Metab       Date:  2012-01-17       Impact factor: 4.310

9.  Splanchnic metabolism of dietary arginine in relation to nitric oxide synthesis in normal adult man.

Authors:  L Castillo; T C deRojas; T E Chapman; J Vogt; J F Burke; S R Tannenbaum; V R Young
Journal:  Proc Natl Acad Sci U S A       Date:  1993-01-01       Impact factor: 11.205
  9 in total

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