TY - GEN AU - Jain,Naveen K AU - Patil,C S AU - Singh,Amarjit AU - Kulkarni,Shrinivas K TI - Sildenafil, a phosphodiesterase-5 inhibitor, enhances the antinociceptive effect of morphine SN - 0031-7012 PY - 2003///0605 KW - Analgesics KW - pharmacology KW - Animals KW - Dose-Response Relationship, Drug KW - Drug Interactions KW - Enzyme Inhibitors KW - Female KW - Hyperalgesia KW - chemically induced KW - Male KW - Methylene Blue KW - Mice KW - Morphine KW - NG-Nitroarginine Methyl Ester KW - Naloxone KW - Narcotic Antagonists KW - Nitric Oxide Synthase KW - antagonists & inhibitors KW - Pain KW - Pain Measurement KW - Phosphodiesterase Inhibitors KW - Piperazines KW - Purines KW - Rats KW - Sildenafil Citrate KW - Sulfones KW - Time Factors N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1159/000067802 ER -