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한국질량분석학회> Mass Spectrometry Letters

Mass Spectrometry Letters update

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수록정보
수록범위 : 1권1호(2010)~13권1호(2022) |수록논문 수 : 253
Mass Spectrometry Letters
13권1호(2022년 03월) 수록논문
최근 권호 논문
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KCI등재 SCOPUS

1Special Issue in Honor of Dr. Bong Chul Chung's Retirement

저자 : Man Ho Choi , Jeongkwon Kim

발행기관 : 한국질량분석학회 간행물 : Mass Spectrometry Letters 13권 1호 발행 연도 : 2022 페이지 : pp. 1-1 (1 pages)

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KCI등재 SCOPUS

2Mass Spectrometry-based Hair Metabolomics for Biomarker Discovery

저자 : Yu Ra Lee , Jongki Hong , Bong Chul Chung

발행기관 : 한국질량분석학회 간행물 : Mass Spectrometry Letters 13권 1호 발행 연도 : 2022 페이지 : pp. 2-10 (9 pages)

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Metabolomics makes it possible to analyze the interrelationships between various signaling molecules based on the metabolic pathways involved by using high-resolution devices. This approach can also be used to obtain large-scale metabolic information to identify the relevant pathways for disease diagnosis and prognosis and search for potential biomarkers. In the fields of medicine and forensics, hair analysis is used to detect various metabolites in the body. Hair can be harvested readily in a noninvasive manner and is easier to transport and store than blood and urine. Another advantage from a forensic viewpoint is that hair reflects all the components of body fluids. In addition, because of the unique coating structure of hair, it can be used for measurements without changing or destroying its adsorbed components. In this review, the pretreatments for hair analysis, instrumental conditions and clinical applications are discussed. Especially, the clinical use of hair metabolomics in the diagnosis of various diseases and the limitations of the technique are described.

KCI등재 SCOPUS

3Metabolic Signatures of Adrenal Steroids in Preeclamptic Serum and Placenta Using Weighting Factor-Dependent Acquisitions

저자 : Chaelin Lee , Min-jeong Oh , Geum Joon Cho , Dong Jun Byun , Hong Seog Seo , Man Ho Choi

발행기관 : 한국질량분석학회 간행물 : Mass Spectrometry Letters 13권 1호 발행 연도 : 2022 페이지 : pp. 11-19 (9 pages)

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Although translational research is referred to clinical chemistry measures, correct weighting factors for linear and quadratic calibration curves with least-squares regression algorithm have not been carefully considered in bioanalytical assays yet. The objective of this study was to identify steroidogenic roles in preeclampsia and verify accuracy of quantitative results by comparing two different linear regression models with weighting factor of 1 and 1/x 2. A liquid chromatography-mass spectrometry (LC-MS)-based adrenal steroid assay was conducted to reveal metabolic signatures of preeclampsia in both serum and placenta samples obtained 15 preeclamptic patients and 17 age-matched control pregnant women (33.9 ± 4.2 vs. 32.8 ± 5.6 yr, respectively) at 34~36 gestational weeks. Percent biases in the unweighted model (wi = 1) were inversely proportional to concentrations (-739.4 ~ 852.9%) while those of weighted regression (wi = 1/x 2) were < 18% for all variables. The optimized LC-MS combined with the weighted linear regression resulted in significantly increased maternal serum levels of pregnenolone, 21- deoxycortisol, and tetrahydrocortisone (P < 0.05 for all) in preeclampsia. Serum metabolic ratio of (tetrahydrocortisol + allo-tetrahydrocortisol) / tetrahydrocortisone indicating 11β-hydroxysteroid dehydrogenase type 2 was decreased (P < 0.005) in patients. In placenta, local concentrations of androstenedione were changed while its metabolic ratio to 17α-hydroxyprogesterone responsible for 17,20-lyase activity was significantly decreased in patients (P = 0.002). The current bioanalytical LC-MS assay with corrected weighting factor of 1/x 2 may provide reliable and accurate quantitative outcomes, suggesting altered steroidogenesis in preeclampsia patients at late gestational weeks in the third trimester.

KCI등재 SCOPUS

4Quantification of Fargesin in Mouse Plasma Using Liquid Chromatography-High Resolution Mass Spectrometry: Application to Pharmacokinetics of Fargesin in Mice

저자 : Min Seo Lee , Chang Ho Lim , Young Yoon Bang , Hye Suk Lee

발행기관 : 한국질량분석학회 간행물 : Mass Spectrometry Letters 13권 1호 발행 연도 : 2022 페이지 : pp. 20-25 (6 pages)

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Fargesin, a tetrahydrofurofuranoid lignan isolated from Flos Magnoliae, shows anti-inflammatory, anti-oxidative, anti-allergic, and anti-hypertensive activities. To evaluate the pharmacokinetics of fargesin in mice, a sensitive, simple, and selective liquid chromatography-high resolution mass spectrometric method using electrospray ionization and parallel reaction monitoring mode was developed and validated for the quantification of fargesin in mouse plasma. Protein precipitation of 6 μL mouse plasma with methanol was used as sample clean-up procedure. The standard curve was linear over the range of 0.2-500 ng/mL in mouse plasma with the lower limit of quantification level at 0.2 ng/mL. The intra- and inter-day coefficient variations and accuracies for fargesin at four quality control concentrations including were 3.6-11.3% and 90.0-106.6%, respectively. Intravenously injected fargesin disappeared rapidly from the plasma with high clearance values (53.2-55.5 mL/min/kg) at 1, 2, and 4 mg/kg doses. Absolute bioavailability of fargesin was 4.1-9.6% after oral administration of fargesin at doses of 1, 2, and 4 mg/ kg to mice.

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