Expression of cytochromes P450 4F4 and 4F5 in infection and injury models of inflammation.
2003Biochimica et biophysica acta
Cui X, Kalsotra A, Robida AM, Matzilevich D, Moore AN +4 more
Plain English
Researchers studied how two liver proteins (CYP 4F4 and 4F5) change during infections and brain injuries. They found that these proteins drop by 40-50% during infections, but after brain injury they first disappear and then come roaring back over the following two weeks.
This matters because these proteins control inflammatory chemicals in the body—substances that cause swelling and pain. The initial drop after injury allows inflammation to happen (which is actually necessary for healing), but as the proteins return to normal levels, they shut down that inflammation so the body can repair itself and recover.