Abstract
Isolated, perfused kidneys from ovalbumin-sensitized guinea pigs released large amounts of histamine, thromboxane (TX) B2 and less consistently leukotriene (LT) C4, and showed a marked reduction in perfusion rate (PR) following injection of the specific antigen, or antiserum to IgG1 and IgG2; both types of anaphylactic reaction being due to cross-linking of mast cell-sensitizing immunoglobulin. Infusion of low concentration of synthetic LTC4 caused reduction in PR, which was blocked by the antagonist FPL 55712. Large-dose bolus injections of histamine also reduced PR. It is concluded that the kidney is a target organ in anaphylaxis and that the reaction alters renal haemodynamics.
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