Mass Spectrometry Imaging and Its Application in Forensic Toxicology.
10.12116/j.issn.1004-5619.2020.300502
- Author:
Li Ying ZHOU
1
;
Xin WANG
1
;
Ping XIANG
1
Author Information
1. Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China.
- Publication Type:Review
- Keywords:
forensic toxicology;
mass spectrometry imaging;
sample preparation;
review
- MeSH:
Animals;
Diagnostic Imaging;
Forensic Toxicology;
Humans;
Mass Spectrometry;
Plants;
Proteomics;
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- From:
Journal of Forensic Medicine
2021;37(3):402-401
- CountryChina
- Language:English
-
Abstract:
Mass spectrometry imaging （MSI） is a new imaging technology that can simultaneously detect and record the spatial distribution information of multiple molecules on the sample surface without labeling. The main principle of MSI is to combine mass spectrometry with imaging technology and irradiate the sample slice with ion beam or laser to ionize the molecules on its surface, obtain the mass spectrometry signal through the detector, convert the obtained data into pixel points by the imaging software, and then construct the spatial distribution image of the target compound on the tissue surface. The sample preparation for MSI include： sample collection and storage, tissue section, tissue pretreatment, selection and application of matrix. At present, this technology has been widely used in the fields of biomedicine, new drug development and proteomics, and its application in the field of forensic toxicology has also gradually attracted attention. This article reviews the principles and sample preparation process of MSI, describes the application of MSI in abused substances and metabolites of various material matrices, herbal mixtures, latent fingerprints, hair and animal and plant tissues, and discusses the prospects of the application of this technology in forensic toxicology, in order to provide ideas and references for the application of MSI technology in forensic toxicology.
