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Gel-Based Sample Fractionation with SP3-Purification for Top-Down Proteomics.
J Proteome Res
January 2025
Advanced Research Support Center, Ehime University, Ehime 791-0295, Japan.
Precise prefractionation of proteome samples is a potent method for realizing in-depth analysis in top-down proteomics. PEPPI-MS (Passively Eluting Proteins from Polyacrylamide gels as Intact species for MS), a gel-based sample fractionation method, enables high-resolution proteome fractionation based on molecular weight by highly efficient extraction of proteins from polyacrylamide gels after SDS-PAGE separation. Thereafter it is essential to effectively remove contaminants such as CBB and SDS from the PEPPI fraction prior to mass spectrometry.
View Article and Find Full Text PDFComparative evaluation of ACetic - MEthanol high salt dissociation approach for single-cell transcriptomics of frozen human tissues.
Front Cell Dev Biol
January 2025
Endocrinology Research Centre, Institute of Personalized Medicine, Moscow, Russia.
Current dissociation methods for solid tissues in scRNA-seq studies do not guarantee intact single-cell isolation, especially for sensitive and complex human endocrine tissues. Most studies rely on enzymatic dissociation of fresh samples or nuclei isolation from frozen samples. Dissociating whole intact cells from fresh-frozen samples, commonly collected by biobanks, remains a challenge.
View Article and Find Full Text PDF[Surveillance of parasitic infections in market-sold aquatic products and knowledge and practice towards food-borne parasitic diseases among residents in Shanghai Municipality from 2020 to 2023].
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi
July 2024
Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China.
Objective: To investigate the prevalence of parasitic infections in market-sold aquatic products in Shanghai Municipality, and to understand the knowledge and practice towards food-borne parasitic diseases among residents, so as to provide insights into the surveillance and control of food-borne parasitic diseases.
Methods: Freshwater products, seawater products and pickled products were randomly obtained from agricultural trade markets, supermarkets, retail stores and restaurants in Huangpu, Putuo, Minhang and Qingpu districts of Shanghai Municipality from 2020 to 2023. Parasite metacercariae and larvae were detected in these aquatic products using pressing method, digestion method and the dissection method, and the detection of parasitic infection was compared in different types of aquatic products.
A method for analyzing tetrodotoxin (TTX) in miso soup samples was proposed. The samples were purified using strong cation exchange solid-phase extraction and analyzed by liquid chromatography-tandem mass spectrometry. The recovery of TTX was considerably influenced by the salt concentration in the loading solution during purification.
View Article and Find Full Text PDFModeling tritium release to the atmosphere during the Fukushima Daiichi Nuclear Power Plant accident and application to estimating post-accident water system transit times.
Environ Sci Pollut Res Int
January 2025
Institute of Industrial Science (IIS), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, 277-8575, Chiba, Japan.
During the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on March 11, 2011, radionuclides such as tritium were released into the environment across Japan, obscuring the natural background signal of tritium in precipitation. This anthropogenic component was rapidly washed out by precipitation according to measurements in Japan. However, the impact of the accident on the natural tritium-based estimation of water system transit times in Fukushima and other prefectures in Japan remains uncertain.
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