1.4 Chemical Determination. Proteins are complex, organic compounds composed of many amino acids linked together through peptide bonds and cross-linked between chains by sulfhydryl bonds, hydrogen bonds and van der Waals forces.
Common causes of pleurisy include trauma, postcardiac injury, infection (i.e., viral, bacterial, or parasitic), respiratory illness, caustic exposure (i.e., drug-induced), autoimmune disease, and malignancy (TABLE 1).
Autoimmune conditions, such as rheumatoid arthritis and lupus, are other possible causes of pleurisy. In these conditions, something goes wrong with the immune system (the bodyâs natural defence against infection and illness) and it begins to attack healthy tissue.