A new ambient ionization method allowing the direct chemical analysis of living human body by mass spectrometry (MS) was developed. This MS method, namely Megavolt Electrostatic Ionization Mass Spectrometry, is based on electrostatic charging of a living individual to megavolt (MV) potential, illicit drugs, and explosives on skin/glove, flammable solvent on cloth/tissue paper, and volatile food substances in breath were readily ionized and detected by a mass spectrometer.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s13361-014-0932-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
YWHAG promotes bladder cancer metastasis by regulating TMOD3 to activate ERK1/2 and JNK phosphorylation in the MAPK pathway.
J Transl Med
December 2024
Department of Urology, Peking University First Hospital, Beijing Key Laboratory of Urogenital Diseases (Male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China.
Objective: This study aims to investigate the molecular mechanisms by which YWHAG (Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase Activation Protein Gamma) promotes metastasis in bladder cancer. Specifically, it seeks to elucidate the role of YWHAG in driving cancer cell invasion and its potential as a prognostic marker for bladder cancer progression.
Methods: The expression pattern of YWHAG in both primary and metastatic bladder cancer tissues was analyzed using immunohistochemistry (IHC) to determine its correlation with clinical stage and prognosis in bladder cancer patients.
Two new strains of Streptomyces with metabolic potential for biological control of pear black spot disease.
BMC Microbiol
December 2024
State Key Laboratory Incubation Base for Conservation and Utilization of Bio-Resource in Tarim Basin, Alar, Xinjiang Uygur Autonomous Region, 843300, China.
Background: Pear black spot is caused by Alternaria tenuissima. It is one of the diseases of concern limiting pear production worldwide. Existing cultivation methods and fungicides are not sufficient to control early blight.
View Article and Find Full Text PDFAn isothermal calorimetry assay for determining steady state kinetic and Ensitrelvir inhibition parameters for SARS-CoV-2 3CL-protease.
Sci Rep
December 2024
Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, 40127, Bologna, Italy.
This manuscript details the application of Isothermal Titration Calorimetry (ITC) to characterize the kinetics of 3CL, the main protease from the Severe Acute Respiratory Syndrome CoronaVirus-2 (SARS-CoV-2), and its inhibition by Ensitrelvir, a known non-covalent inhibitor. 3CL is essential for producing the proteins necessary for viral infection, which led to the COVID-19 pandemic. The ITC-based assay provided rapid and reliable measurements of 3CL activity, allowing for the direct derivation of the kinetic enzymatic constants K and k by monitoring the thermal power required to maintain a constant temperature as the substrate is consumed.
View Article and Find Full Text PDFConcatemer-assisted stoichiometry analysis: targeted mass spectrometry for protein quantification.
Life Sci Alliance
March 2025
https://ror.org/0168r3w48 Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, San Diego, CA, USA
Large multiprotein machines are central to many biological processes. However, stoichiometric determination of protein complex subunits in their native states presents a significant challenge. This study addresses the limitations of current tools in accuracy and precision by introducing concatemer-assisted stoichiometry analysis (CASA).
View Article and Find Full Text PDFN Protein of Tomato Spotted Wilt Virus Proven to Be Antagonistic Against Tomato Yellow Leaf Curl Virus in Nicotiana benthamiana.
Mol Plant Pathol
January 2025
Facility Horticultural Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China.
Two phylogenetically unrelated viruses transmitted by different insect vectors, tomato spotted wilt virus (TSWV) and tomato yellow leaf curl virus (TYLCV), are major threats to tomato and other vegetable production. Although co-infections of TSWV and TYLCV on the same host plant have been reported on numerous occasions, there is still lack of research attempting to elucidate the mechanisms underlying the relationship between two viruses when they coexist in the same tomato or other plants. After assessing the effect of four TSWV-coded proteins on suppressing TYLCV in TSWV N transgenic Nicotiana benthamiana seedlings, the TSWV N protein proved to be effective in reducing TYLCV quantity and viral symptoms.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!