Article Synopsis
- The study highlights that all living systems exhibit ultraweak photon emission (UPE), which is a very low-intensity light emission, and that new imaging technology can effectively detect differences in UPE under various physiological conditions.
- The research utilized advanced cameras to capture these emissions and found notable differences in UPE levels between live and dead mice, as well as varying intensities in plants based on temperature changes and injuries.
- Additionally, chemical treatments, especially local anesthetics like benzocaine, significantly influenced UPE characteristics, suggesting that UPE imaging has potential for non-invasive assessment of vitality in living organisms and their responses to environmental stress.
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Article Abstract
The phenomenon of biological ultraweak photon emission (UPE), that is, extremely low-intensity emission (10-10 photons cm s) 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.
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| http://dx.doi.org/10.1021/acs.jpclett.4c03546 | DOI Listing |
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