title: Changes in intracellular water diffusion and energetic metabolism in response to ischemia in perfused C6 rat glioma cells.
abstract: This work reports results of experiments in hollow-fiber bioreactor C6 glioma cell cultures where the apparent diffusion coefficient (ADC) of intracellular water (iADC) was measured at diffusion times between 0.83 and 40 ms. The experiments were carried out before and after the onset of permanent ischemia. The changes in iADC following ischemia were dependent on the diffusion time employed in the experiment. An ischemia-induced decrease in the iADC was measured at short diffusion times, while at long diffusion times the iADC increased. Decreases in the iADC measured at short diffusion times are interpreted to be a result of a decrease in the intrinsic diffusivity of intracellular water due to energy failure. Increases in iADC measured at long diffusion times, are interpreted to result from cell swelling.
authors: Department of Biomedical Engineering, University of Arizona, Tucson, Arizona 85721, USA.
authors: Kevin D
authors: KD
authors: Harkins
authors: Jean-Philippe
authors: JP
authors: Galons
authors: Joseph L
authors: JL
authors: Divijak
authors: Theodore P
authors: TP
authors: Trouard
mesh_terms: D000818:Animals; D019149:Bioreactors; D001834:Body Water / Q000378:metabolism*; D002545:Brain Ischemia / Q000378:metabolism*; D001932:Brain Neoplasms / Q000378:metabolism*; D015687:Cell Hypoxia; D045744:Cell Line, Tumor; D003287:Contrast Media / Q000008:administration & dosage; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D019786:Gadolinium DTPA / Q000008:administration & dosage; D005910:Glioma / Q000378:metabolism*; D007424:Intracellular Fluid / Q000378:metabolism; D018810:Magnetic Resonance Angiography / Q000379:methods; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D051381:Rats; D014407:Tumor Cells, Cultured
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA