par Denays, Roger 
;Chao, Shih-Li ;Mathur, Raj ;Jeghers, Orner;Fruhling, Janos ;Noël, Philippe ;Ham, Hamphrey
Référence Magnetic resonance in medicine, 29, 6, page (719-723)
Publication Publié, 1993-06
;Chao, Shih-Li ;Mathur, Raj ;Jeghers, Orner;Fruhling, Janos ;Noël, Philippe ;Ham, Hamphrey Référence Magnetic resonance in medicine, 29, 6, page (719-723)
Publication Publié, 1993-06
Article révisé par les pairs
| Résumé : | In this work, 31P phosphorus NMR (31P NMR) studies of the brain have been conducted in rats acutely and chronically intoxicated with ethanol. In both groups, changes in levels of high-energy phosphates were observed: increase of phosphocreatinine (PCr)/β AaTP and PCr/inorganic phosphate (Pi) in acute and long-term ethanol exposure, and decrease of Piβ ATP after acute ethanol administration. These changes in high-energy phosphates, indicative of a reduction of adenosine triphosphate (ATP) and PCr consumption (PCr+ ADP + H+ ATP + Cr; ATP ADP + Pi), suggest a reduction of cerebral metabolism both in acute and chronic ethanol exposure. In addition, in the group of rats chronically intoxicated with ethanol, there were variations in phosphodiester peak intensities (decrease of phosphomonoester (PME)/phosphodiester (PDE), increase of PDE/β ATP), suggesting increased breakdown of membrane phospholipids. These changes could provide a metabolic explanation for the development of cerebral atrophy in chronic alcoholism. |
