Effects of acetylsalicylic acid and prostaglandin on endotoxin-induced pulmonary platelet sequestration. 1981

L J Thörnee, and M Kuenzig, and L J Thörne

Previous experimental studies have shown that soft tissue trauma and endotoxin shock cause pulmonary platelet trapping. In the soft tissue trauma model it has been found that this event can be obviated by pretreatment with aspirin and prostaglandin E1 in combination. This study was made to determine the effect of these two drugs on endotoxin-induced pulmonary platelet trapping. Dogs with 51Cr-tagged platelets were injected with 20 mg endotoxin E. coli. The dogs were kept in shock for 2 hours and then sacrificed. The dogs were kept in shock for 2 hours and then sacrified. The amount of platelet sequestration in the lungs was determined by measuring the 51Cr activity in the lungs. The results of the study showed that prostaglandin alone decreases pulmonary platelet trapping induced by endotoxin, but aspirin, either alone or together with prostaglandin E1, has no positive effect. This could be explained by the fact that acetylsalicylic acid depresses endogenous prostaglandin, and thus decreases the blood concentration of available prostaglandin.

UI MeSH Term Description Entries
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D008297 Male Males
D010974 Platelet Aggregation The attachment of PLATELETS to one another. This clumping together can be induced by a number of agents (e.g., THROMBIN; COLLAGEN) and is part of the mechanism leading to the formation of a THROMBUS. Aggregation, Platelet
D011458 Prostaglandins E (11 alpha,13E,15S)-11,15-Dihydroxy-9-oxoprost-13-en-1-oic acid (PGE(1)); (5Z,11 alpha,13E,15S)-11,15-dihydroxy-9-oxoprosta-5,13-dien-1-oic acid (PGE(2)); and (5Z,11 alpha,13E,15S,17Z)-11,15-dihydroxy-9-oxoprosta-5,13,17-trien-1-oic acid (PGE(3)). Three of the six naturally occurring prostaglandins. They are considered primary in that no one is derived from another in living organisms. Originally isolated from sheep seminal fluid and vesicles, they are found in many organs and tissues and play a major role in mediating various physiological activities. PGE
D001792 Blood Platelets Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation. Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D004359 Drug Therapy, Combination Therapy with two or more separate preparations given for a combined effect. Combination Chemotherapy,Polychemotherapy,Chemotherapy, Combination,Combination Drug Therapy,Drug Polytherapy,Therapy, Combination Drug,Chemotherapies, Combination,Combination Chemotherapies,Combination Drug Therapies,Drug Polytherapies,Drug Therapies, Combination,Polychemotherapies,Polytherapies, Drug,Polytherapy, Drug,Therapies, Combination Drug
D004731 Endotoxins Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells. Endotoxin
D005260 Female Females
D000527 Alprostadil A potent vasodilator agent that increases peripheral blood flow. PGE1,Prostaglandin E1,Caverject,Edex,Lipo-PGE1,Minprog,Muse,PGE1alpha,Prostaglandin E1alpha,Prostavasin,Prostin VR,Prostine VR,Sugiran,Vasaprostan,Viridal,Lipo PGE1

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