Narcotic cueing properties of intraventricularly administered sufentanil, fentanyl, morphine and met-enkephalin.
The narcotic cueing activity of sufentanil, fentanyl, morphine and met-enkephalin was studied upon their injection into the lateral brain ventricle of the rat. Comparative studies on the analgesic activity of the three narcotics support a close correlation between the narcotic cueing and the analgesic activity of narcotic drugs.
Narcotic cueing properties of intraventricularly administered sufentanil, fentanyl, morphine and met-enkephalin. The narcotic cueing activity of sufentanil, fentanyl, morphine and met-enkephalin was studied upon their injection into the lateral brain ventricle of the rat. Comparative studies on the analgesic activity of the three narcotics support a close correlation between the narcotic cueing and the analgesic activity of narcotic drugs.