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Alternative electrolyte solutions for untargeted breath metabolomics using secondary-electrospray ionization high-resolution mass spectrometry
CONCLUSIONS: This work demonstrated the potential of AgNO3 as a complementary dopant for further biomarker discovery in SESI-based breath analysis.PMID:38389333 | DOI:10.1002/rcm.9714 (Source: Rapid Communications in Mass Spectrometry : RCM)
Source: Rapid Communications in Mass Spectrometry : RCM - February 23, 2024 Category: Chemistry Authors: Cedric W üthrich Renato Zenobi Stamatios Giannoukos Source Type: research

Application of clustering strategy for automatic segmentation of tissue regions in mass spectrometry imaging
CONCLUSIONS: We used a clustering algorithm to construct tissue automatic segmentation in MSI datasets. The performance was evaluated by comparing it with the stained image and calculating clustering validation indexes. The results indicated that SAI is important for automatic tissue segmentation in MSI, different from traditional clustering validation measures. Compared to the reports that used internal clustering validation measures such as DBI, our method offers more effective evaluation of clustering results for MSI segmentation. We envision that the proposed automatic image segmentation strategy can facilitate deep le...
Source: Rapid Communications in Mass Spectrometry : RCM - February 23, 2024 Category: Chemistry Authors: Guang Xu Shengfeng Gan Bo Guo Li Yang Source Type: research

Recent advancements in disulfide bridge characterization: Insights from mass spectrometry
CONCLUSIONS: This review presents the latest advancement in MS-based characterization; also a critical perspective is presented for further annotation of DSBs using MS, primarily for single purified proteins or peptides that are densely connected and rich in cysteine. Despite significant breakthroughs resulting from advancements in MS, the analysis of disulfide bonds is not straightforward; it necessitates expertise in sample preparation and interpretation.PMID:38361473 | DOI:10.1002/rcm.9713 (Source: Rapid Communications in Mass Spectrometry : RCM)
Source: Rapid Communications in Mass Spectrometry : RCM - February 16, 2024 Category: Chemistry Authors: Sachin Chaturvedi Sanket Bawake Nitish Sharma Source Type: research

Discrimination and characterization of volatile organic compounds in Lonicerae Japonicae flos and Lonicerae flos using multivariate statistics combined with headspace gas chromatography-ion mobility spectrometry and headspace solid-phase microextraction gas chromatography-mass spectrometry techniques
CONCLUSION: This research conducted a comprehensive analysis of the fundamental volatile components in both LJF and LF. It subsequently elucidated the distinctions and specificities within their respective VOC profiles. And this study enables differentiation between LJF and LF through the analysis of VOCs, offering valuable insights for enhancing the quality control of both LJF and LF.PMID:38356085 | DOI:10.1002/rcm.9693 (Source: Rapid Communications in Mass Spectrometry : RCM)
Source: Rapid Communications in Mass Spectrometry : RCM - February 15, 2024 Category: Chemistry Authors: Tong Wu Jiaxin Yin Xinlong Wu Wei Li Songtao Bie Jing Zhao Xinbo Song Heshui Yu Zheng Li Source Type: research