Exaprolol, metipranolol and propranolol decreased significantly histamine liberation, degranulation, 45Ca uptake and thromboxane B2 formation in isolated rat mast cells stimulated with concanavalin A and phosphatidylserine. Moreover, exaprolol and metipranolol decreased 32P incorporation into membrane phospholipids and metipranolol and propranolol reduced the liberation of arachidonic acid from membrane phospholipids of stimulated mast cells. Exaprolol significantly increased the arachidonic acid liberation from these cells. Possible mechanisms of interaction of beta-adrenoceptor blocking drugs with isolated mast cells are discussed.

• MeSH
• Adrenergic beta-Antagonists pharmacology   MeSH
• Phosphatidylserines pharmacology   MeSH
• Phospholipids metabolism   MeSH
• Concanavalin A pharmacology   MeSH
• Rats MeSH
• Arachidonic Acid MeSH
• Arachidonic Acids metabolism   MeSH
• Mast Cells drug effects   metabolism   MeSH
• Membrane Lipids metabolism   MeSH
• Prostaglandins biosynthesis   MeSH
• Phosphorus Radioisotopes MeSH
• Calcium Radioisotopes MeSH
• In Vitro Techniques MeSH
• Thromboxane B2 biosynthesis   MeSH
• Histamine Release drug effects   MeSH
• Animals MeSH
• Check Tag
• Rats MeSH
• Male MeSH
• Animals MeSH
• Publication type
• Journal Article MeSH
• Names of Substances
• Adrenergic beta-Antagonists MeSH
• Phosphatidylserines MeSH
• Phospholipids MeSH
• Concanavalin A MeSH
• Arachidonic Acid MeSH
• Arachidonic Acids MeSH
• Membrane Lipids MeSH
• Prostaglandins MeSH
• Phosphorus Radioisotopes MeSH
• Calcium Radioisotopes MeSH
• Thromboxane B2 MeSH