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It is generally accepted that classical opioids exert their antinociceptive effect mainly when binding to opioid receptors located in the central nervous system. However, a growing body of evidence points to the relevance of peripheral opioid receptors in periphery pathology, including cancer. A cancer is very often the cause of pain resulting from peripheral metastasis. The peripheral component of...
Prostaglandins are primary mediators of pain and are involved in pathological conditions such as hypertension, cancer and inflammation but are also needed for normal function of the female reproductive system. This may hold true for other systems because long term use of selective COX-2 inhibitors such as VIOXX and BEXTRA was associated with heart failure, leading to their withdrawal. A thorough study...
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