Senden alle Organismen Photonen aus?
Das Phänomen der biologischen ultraschwachen Photonenemission (UPE), d. h. der Emission mit extrem niedriger Intensität von 10-103 Photonen cm-2 s-1 im Spektralbereich von 200-1000 nm, wurde in allen untersuchten lebenden Systemen beobachtet.
Hier nun ein Bericht über Experimente, die die Fähigkeit neuartiger bildgebender Systeme zur Erkennung von UPE-Variationen in einer Reihe von physiologisch wichtigen Szenarien zeigen. Die Untersuchung zeigt signifikante Unterschiede zwischen der UPE von lebenden und toten Mäusen.
Na? Irgendwelche spontanen Assoziationen? ;-D
Imaging Ultraweak Photon Emission from Living and Dead Mice and from Plants under Stress
The phenomenon of biological ultraweak photon emission (UPE), that is, extremely low-intensity emission (10–103 photons cm–2 s–1) in the spectral range of 200–1000 nm, has been observed in all living systems that have been examined. Here, we report experiments that exemplify the ability of novel imaging systems to detect variations in UPE for a set of physiologically important scenarios. We use electron-multiplying charge-coupled device (EMCCD) and charge-coupled device (CCD) cameras to capture single visible-wavelength photons with low noise and quantum efficiencies higher than 90%. Our investigation reveals significant contrast between the UPE from live vs dead mice. In plants, we observed that an increase in the temperature and injuries both caused an increase in UPE intensity. Moreover, chemical treatments modified the UPE emission characteristics of plants, particularly the application of a local anesthetic (benzocaine) to injury, which showed the highest emission among the compounds tested. As a result, UPE imaging provides the possibility of non-invasive label-free imaging of vitality in animals and the responses of plants
to stress.
Copyright © 2025 American Chemical Society, April 24, 2025
Mehr Infos
Abstract https://pubs.acs.org/doi/10.1021/acs.jpclett.4c03546
Studie https://pubs.acs.org/doi/suppl/10.1021/acs.jpclett.4c03546/suppl_file/jz4c03546_si_001.pdf
Maria