title: Cardiovascular effects of lysophosphatidic acid and its structural analogs in rats.
abstract: Injection of lysophosphatidic acid into anesthetized rats induced immediate hypertension, the effect depending on the structure of the sn-1-acyl moiety of the molecule. A hydroxyl group at the sn-2-position was not necessary, but a wedgeshaped structure was suitable for hypertensive activity. Most lysophospholipids with a chemical group attached to the phosphate portion had only weak hypotensive effects, but the sn-2-acetylated analogs of these depressor lysophospholipids elicited a hypotension at much lower doses. The durations of the hypotensions evoked by the sn-2-acetylated choline phospholipids were longer than those produced by 1-palmitoyl-2-acetoyl-sn-glycerol-3-phosphorylmethanol, ethanol and propanol.
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D018738:Hexamethonium; D006584:Hexamethonium Compounds / Q000494:pharmacology; D007213:Indomethacin / Q000494:pharmacology; D008246:Lysophospholipids; D008297:Male; D010712:Phosphatidic Acids / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D012119:Respiration / Q000187:drug effects; D013329:Structure-Activity Relationship; D014043:Tolazoline / Q000494:pharmacology
chemical_list: D006584:Hexamethonium Compounds; D008246:Lysophospholipids; D010712:Phosphatidic Acids; D018738:Hexamethonium; D014043:Tolazoline; D007213:Indomethacin