title: Effects of ATP-MgCl2 and adenosine-MgCl2 administration on intracellular ATP levels in the kidney.
abstract: The effects of exogenous administration of 1 mM [8-14C]ATP-MgCl2 and adenosine-MgCl2 on intracellular accumulation of adenine nucleotides were examined in isolated, perfused rat kidneys. The kidneys were made filtering or non-filtering by increasing the colloid oncotic pressure of the perfusate solution in order to assess the relative contributions of the glomerular and peritubular routes in the uptake of the nucleotides. The results indicate that: although labeled ATP is undetectable in the perfusate after 20 min, there is a significant accumulation of labeled ATP in the tissue and although labeled adenosine-MgCl2 administration also leads to labeled intracellular ATP, the total intracellular ATP is much less than with ATP-MgCl2 administration.
mesh_terms: D000241:Adenosine / Q000378:metabolism / Q000494:pharmacology*; D000244:Adenosine Diphosphate / Q000378:metabolism; D000249:Adenosine Monophosphate / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism* / Q000494:pharmacology; D000818:Animals; D066298:In Vitro Techniques; D007288:Inosine / Q000378:metabolism; D007291:Inosine Monophosphate / Q000378:metabolism; D007668:Kidney / Q000187:drug effects / Q000378:metabolism*; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology*; D015636:Magnesium Chloride; D008297:Male; D010477:Perfusion; D051381:Rats
chemical_list: D015636:Magnesium Chloride; D007291:Inosine Monophosphate; D000249:Adenosine Monophosphate; D007288:Inosine; D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; D008274:Magnesium; D000241:Adenosine