Mass spectrometric determination of particular tissue states

    公开(公告)号:US10886115B2

    公开(公告)日:2021-01-05

    申请号:US16201158

    申请日:2018-11-27

    摘要: The invention relates to the identification and visualization of the spatial distribution of particular tissue states in histological tissue sections from mass spectrometric signals acquired with spatial resolution. The invention proposes a method by means of which regions of the tissue with similar mass spectra are found automatically, and it is further proposed that mass spectra of these regions are summed in order to improve the spectral quality to such an extent that known markers for tissue degenerations can be identified with increased certainty. Regions of similar mass spectra can be interconnected on a large scale, but can also be isolated from each other on a small scale.

    Humidity stabilization during the preparation of biological samples for spectrometry

    公开(公告)号:US11519828B2

    公开(公告)日:2022-12-06

    申请号:US16625600

    申请日:2018-07-04

    摘要: The invention proposes preparing biological samples for spectrometry which contain cell structures and/or whole cells of human or animal origin (e.g. thin human and animal tissue sections) or prokaryotes (e.g. microorganisms), and which require constant relative humidity, in a temperature-controlled gas volume whose humidity is determined by a saturated substance solution, for example a suitable salt solution. The invention exploits a physico-chemical phenomenon called “deliquescence”, which manifests itself by keeping the relative humidity above the saturated substance solution constant with a high degree of precision when a specified temperature is maintained. Pure succinic acid exhibits deliquescence at approx. 99% relative humidity, for example. Since an enormous variety of deliquescent salts and other suitable substances are available, it is possible to find the suitable substance for almost any desired relative humidity, with adjustment of the temperature, where necessary.

    Mass spectrometric determination of particular tissue states

    公开(公告)号:US11348771B2

    公开(公告)日:2022-05-31

    申请号:US17095908

    申请日:2020-11-12

    摘要: The invention relates to the identification and visualization of the spatial distribution of particular tissue states in histological tissue sections from mass spectrometric signals acquired with spatial resolution. The invention proposes a method by means of which regions of the tissue with similar mass spectra are found automatically, and it is further proposed that mass spectra of these regions are summed in order to improve the spectral quality to such an extent that known markers for tissue degenerations can be identified with increased certainty. Regions of similar mass spectra can be interconnected on a large scale, but can also be isolated from each other on a small scale.