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.
What causes pleurisy? In young, healthy people, an infection of the lower respiratory system by a virus or bacteria may cause pleurisy. Pleurisy usually lasts a few days to 2 weeks. In very rare cases, the virus or bacteria may spread and cause pleurisy in others. Other causes of pleurisy include air leaking into the pleural cavity from a hole in a lung (pneumothorax), injury to the chest (such as a broken rib), tuberculosis or other infections, or a tumor in the pleura.
Treatment for Pleurisy. 1  Treatment depends on the underlying cause of pleurisy and the pleural effusion; and is done accordingly. 2  If bacterial pneumonia is causing the pleurisy, then antibiotics are given to control the infection. If any viral infection is the cause, then pleurisy will often resolve on its own.