Do sigmoid and transverse sinus thrombosis caused by mastoid implant -- case report?
Implants in the mastoid area are a very important aid for retention of auricular prostheses, but may have life-threatening intracranial consequences.
These findings suggest that cocaine can directly stimulate endothelial cells to release ET-1 and that the observed increase is independent of serum or plasma factors. Furthermore, cocaine-stimulated endothelin-1 release appears to be mediated at least in part by the angiotensin system. These observations provide a framework for understanding the cellular mechanisms involved in cocaine-induced vasoconstriction.