Study shows why some pain drugs become less effective over time
Researchers at the University of Montreal's Sainte-Justine Hospital have identified how neural cells like those in our bodies are able to build up resistance to opioid pain drugs within hours.
Humans have known about the usefulness of opioids, which are often harvested from poppy plants, for centuries, but we have very little insight into how they lose their effectiveness in the hours, days and weeks following the first dose.
"Our study revealed cellular and molecular mechanisms within our bodies that enables us to develop resistance to this medication, or what scientists call drug tolerance," lead author Dr. Graciela Pineyro explained. "A better understanding of these mechanisms will enable us to design drugs that avoid tolerance and produce longer therapeutic responses."... Read More - http://www.msrc.co.uk/index.cfm/fuseact ... ageid/1896