1 Exotoxins are proteins released by both Gram-positive and Gram-negative bacteria. 2  all major Gram-positives produce exotoxin. 3  except Listeria monocytogenes (produces endotoxin). 4  exotoxins are not heat stable.
Endocarditis (EN-do-kar-DI-tis) is an infection of the inner lining of the heart chambers and valves. This lining is called the endocardium (en-do-KAR-de-um). The condition also is called infective endocarditis (IE). The term endocarditis also is used to describe an inflammation of the endocardium due to other conditions. This article only discusses endocarditis related to infection. IE occurs if bacteria, fungi, or other germs invade your bloodstream and attach to abnormal areas of your heart.
Definition: Infective endocarditis is an infection of a cardiac valve or the endocardium caused by bacteria, fungi, or chlamydia. Pathological findings include the presence of often friable, valvular vegetations containing bacteria, fibrin, platelets and inflammatory cells.efinition: Infective endocarditis is an infection of a cardiac valve or the endocardium caused by bacteria, fungi, or chlamydia. Pathological findings include the presence of often friable, valvular vegetations containing bacteria, fibrin, platelets and inflammatory cells.