title: Beta-endorphin administered into the lateral ventricle of the brain causes pulmonary platelet trapping in rabbits.
abstract: Human beta-endorphin was injected into the cerebrospinal fluid in rabbits by means of a needle inserted into the lateral ventricle of the brain. Control rabbits received an equal amount of saline. beta-Endorphin induced a significant pulmonary platelet trapping compared to control. beta-Endorphin had no effect on arterial blood pressure, heart rate, platelet aggregability ex vivo or fibrinolytic activity (fibrinolytic plates). The plasma activity of antithrombin III, kallikrein-like activity and kallikrein inhibitor determined by means of chromogenic substrates was not influenced by beta-endorphin.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D000818:Animals; D000990:Antithrombin III / Q000032:analysis; D001792:Blood Platelets / Q000187:drug effects / Q000502:physiology*; D002552:Cerebral Ventricles / Q000187:drug effects / Q000502:physiology*; D003094:Collagen / Q000494:pharmacology; D004723:Endorphins / Q000494:pharmacology*; D005260:Female; D005342:Fibrinolysis / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D007610:Kallikreins / Q000032:analysis; D008297:Male; D009270:Naloxone / Q000494:pharmacology; D010974:Platelet Aggregation / Q000187:drug effects; D011817:Rabbits; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D009270:Naloxone; D001615:beta-Endorphin; D000244:Adenosine Diphosphate; D000990:Antithrombin III; D003094:Collagen; D007610:Kallikreins