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).
Infection. An infection is the most common cause of pleurisy. Any type of infection has the potential to spread to the pleura, but viral infections are usually responsible. Viruses known to cause pleurisy include: 1  the influenza (flu) virus.