In vivo 31P NMR OSIRIS of bioenergetic changes in rabbit kidneys during and after ischaemia: effect of pretreatment with an indeno-indole compound.
Changes in energy phosphates of rabbit kidneys subjected to ischaemia-reperfusion have been measured in vivo with volume selective 31P NMR spectroscopy. The effects of pretreatment with a new lipid peroxidation inhibitor (indeno-indol derivate--code name H290/51) on the bioenergetic changes were analysed. The left kidney was moved to a subcutaneous pocket to facilitate exact positioning over the surface coil. A 1H NMR image was acquired and a 3.5-mL cube selected for 31P NMR spectra. 31P NMR spectra were recorded before occlusion of the left renal artery, during 1 h of ischaemia and 2 hours of reperfusion. Ischaemia induced drastic changes in the levels of inorganic phosphates and ATP as well as intracellular acidosis. A normalization was observed during reperfusion. Two hours after reperfusion significantly higher values for beta-ATP/Pi and intracellular pH were recorded in the animals pretreated with H290/51. The present technique allows quantitative analyses of changes in kidney bioenergetics in vivo during different experimental conditions. The importance of ischaemia-reperfusion induced lipid peroxidation for mitochondrial function is emphasized.
Sørensen
V
V
Department of Urology, Sahlgrenska University Hospital, Göteborg, Sweden.
Jonsson
O
O
Pettersson
S
S
Scherstén
T
T
Soussi
B
B
D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D004734:Energy Metabolism; D006863:Hydrogen-Ion Concentration; D007091:Image Processing, Computer-Assisted; D007211:Indoles / Q000494:pharmacology*; D007668:Kidney / Q000187:drug effects / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D010759:Phosphorus Isotopes; D011817:Rabbits; D015427:Reperfusion Injury / Q000188:drug therapy / Q000378:metabolism*
D000975:Antioxidants; C088233:H290-51; D007211:Indoles; D010759:Phosphorus Isotopes; D000255:Adenosine Triphosphate