Changes in glycerophospholipid profile in experimental nephrotic syndrome.
We investigated changes in the glycerophospholipids in kidney tissue and its various intracellular fractions in rats with nephrotic syndrome induced by puromycin aminonucleoside. The ethanolamine plasmalogen, 1-O-alk-1'-enyl-2-acyl-GPE (EP), was increased in kidney tissue obtained from the puromycin-treated animals. A similar increase was found in the mitochondria and endoplasmic reticulum (microsomes) of this tissue. These increases were not found in the liver. Since platelet-activating factor (PAF) is known to be produced in increased amounts in inflammatory disorders, it is suggested that the higher plasmalogen found in rat kidneys during experimental nephrotic syndrome might be derived from increased levels of this autacoid. The increase in PAF may also result in the elevation of plasma PAF-acetylhydrolase (AH) activity observed in these animals.
Mimura
K
K
Department of Biochemistry, The Cecil H. & Ida Green Center for Reproductive Biology Sciences, The University of Texas Southwestern Medical Center at Dallas, TX 75235-9051, USA.
Zhao
B
B
Muguruma
K
K
Frenkel
R A
RA
Johnston
J M
JM
D043203:1-Alkyl-2-acetylglycerophosphocholine Esterase; D000818:Animals; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008297:Male; D008861:Microsomes / Q000378:metabolism; D008928:Mitochondria / Q000378:metabolism; D009404:Nephrotic Syndrome / Q000201:enzymology / Q000378:metabolism*; D010712:Phosphatidic Acids / Q000378:metabolism*; D010713:Phosphatidylcholines / Q000378:metabolism; D010714:Phosphatidylethanolamines / Q000378:metabolism; D010741:Phospholipases A / Q000097:blood / Q000378:metabolism; D010743:Phospholipids / Q000378:metabolism; D010955:Plasmalogens / Q000378:metabolism; D010972:Platelet Activating Factor / Q000378:metabolism; D011506:Proteins / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar
D010712:Phosphatidic Acids; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010743:Phospholipids; D010955:Plasmalogens; D010972:Platelet Activating Factor; D011506:Proteins; D010741:Phospholipases A; D043203:1-Alkyl-2-acetylglycerophosphocholine Esterase