title: Experimental observation of photochemically induced oxygen depletion in perfused cells undergoing photodynamic therapy.
abstract: This report presents a non invasive method for studying oxygen consumption during photodynamic therapy in cultured cells. The oxygen partial pressure of perfusion medium flowing through cells cultured on microcarrier beads, was investigated before, during and after treatment. Pheophorbide a was used as a sensitiser. Time-dependent measurements demonstrate photochemical oxygen depletion induced by photosensitized reactions, followed by an oxygen pressure increase were attributed to a reduction in the cells' metabolism.
authors.affiliation: Institut de Physique Biologique, UPRES A 7004 1173 du CNRS, Faculté de Médecine, Université Louis Pasteur, Strasbourg, France.
authors.forename: T
authors.initials: T
authors.lastname: Schunck
authors.forename: J
authors.initials: J
authors.lastname: Steibel
authors.forename: P
authors.initials: P
authors.lastname: Poulet
mesh_terms: D000818:Animals; D016466:CHO Cells; D006224:Cricetinae; D019906:Nuclear Magnetic Resonance, Biomolecular; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption; D010778:Photochemotherapy
chemical_list: D010100:Oxygen