title: The normobaric oxygen paradox: a novel way to administer oxygen as an adjuvant treatment for cancer?
abstract: The "normobaric oxygen paradox" is a dual mechanism by which oxygen regulates the expression of the Hypoxia Inducible Factor 1 alpha (HIF-1α). The HIF-1α-depending gene regulation is responsible for many different genetic expressions including EPO and VEGF that are usually expressed in parallel. First, VEGF under-expression could decrease tumor angiogenesis leading to a decrease in tumor growth or even apoptosis of cancer cells. Second, induction of EPO-expression can provide cytoprotection. Altogether, this could be deleterious for cancer cells while helping non-malignant cells (at least neural and cardiac) cells to be protected from the side effects of chemotherapy. Eventually, HIF induction could boost immune response by inflammatory cells, increasing their antitumor activity.
authors.affiliation: Intensive Care Department, Brugmann University Hospital, Brussels, Belgium. david.debels@chu-brugmann.be
authors.forename: D
authors.initials: D
authors.lastname: De Bels
authors.forename: F
authors.initials: F
authors.lastname: Corazza
authors.forename: P
authors.initials: P
authors.lastname: Germonpré
authors.forename: C
authors.initials: C
authors.lastname: Balestra
mesh_terms: D000280:Administration, Inhalation; D017024:Chemotherapy, Adjuvant / Q000379:methods*; D004921:Erythropoietin / Q000235:genetics; D015870:Gene Expression / Q000187:drug effects*; D006801:Humans; D051795:Hypoxia-Inducible Factor 1, alpha Subunit / Q000235:genetics*; D009369:Neoplasms / Q000098:blood supply / Q000188:drug therapy*; D009389:Neovascularization, Pathologic / Q000188:drug therapy* / Q000235:genetics; D010100:Oxygen / Q000008:administration & dosage*; D042461:Vascular Endothelial Growth Factor A / Q000235:genetics
chemical_list: C554270:EPO protein, human; C497442:HIF1A protein, human; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D042461:Vascular Endothelial Growth Factor A; D004921:Erythropoietin; D010100:Oxygen