research Development of a new gas chromatography–mass spectrometry (GC–MS) methodology for the evaluation of 5α-reductase activity
A new method was developed to accurately measure enzyme activity related to prostate health.
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5 / 1000+ resultsresearch Phytochemical analyses of Ziziphus jujuba Mill. var. spinosa seed by ultrahigh performance liquid chromatography-tandem mass spectrometry and gas chromatography-mass spectrometry
This study identified the main secondary metabolites in Ziziphus jujuba seeds and confirmed that UPLC-MS/MS and GC-MS effectively demonstrate their pharmaceutical quality.
research Determination of estrone and 17β-estradiol in human hair by gas chromatography–mass spectrometry
This study describes an efficient gas chromatography-mass spectrometry method for detecting estrone and 17 beta-estradiol concentrations in hair, finding differing levels in male and female samples.
research Gas chromatography/mass spectrometry based hair steroid profiling may reveal pathogenesis in hair follicles of the scalp
This study found that using hair steroid profiling, dutasteride treatment led to reduced dihydrotestosterone levels and DHT/testosterone ratio in patients with male-pattern baldness.
research Sex steroid levels in corresponding cerebrospinal fluid and serum samples quantified by mass spectrometry in men
This study developed a validated gas chromatography–tandem mass spectrometry assay to assess sex steroid hormones in cerebrospinal fluid, finding substantial levels of DHEA, androstenedione, and testosterone, with strong correlations to serum levels, providing insight into sex steroid dynamics in the human CNS.
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