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Photodynamic therapy (PDT) is a tumor treatment modality in which a tumorlocalized photosensitizer is excited with light, which results in local production of reactive oxygen species, destruction of tumor vasculature, tumor hypoxia, tumor cell death, and induction of an anti-tumor immune response. However, pre-existing tumor hypoxia may desensitize tumors to PDT by activating the hypoxia-inducible...
Helium, a noble gas, has been used safely in humans. In animal models of regional myocardial ischemia/reperfusion (I/R) it was shown that helium conditioning reduces infarct size. Currently, it is not known how helium exerts its cytoprotective effects and which cell death/survival pathways are affected. The objective of this study, therefore, was to investigate the cell protective effects of helium...
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