levorphanol and anileridine

The method for the analysis of anileridine, levorphanol, nalbuphine and ethamivan in urine by means of GC/NPD and GC/MSD is described. TFAA and MSTFA-MBTFA have been used in this procedure for TFA and TMS derivatization. The parent forms and the metabolites of the four drugs can be found by GC/NPD screening and GC/MSD confirmation. The method is reliable, fast and sensitive.

Topics: Benzamides; Gas Chromatography-Mass Spectrometry; Humans; Isonipecotic Acids; Levorphanol; Nalbuphine

These studies were undertaken to determine the effects of morphine and other opiate and opioid agonists on body temperature in the mouse. Mice were lightly restrained, and rectal temperatures were monitored after injection of opiate analgesics at each of three ambient temperatures. The drugs tested were pure agonists representing eight different chemical classes. At 20 degrees C, morphine, hydromorphone, levorphanol, oxymorphone, methadone, etonitazene, fentanyl, etorphine and meperidine produced hyperthermia in low doses and hypothermia as the doses were raised. Codeine produced only hypothermia at 20 degrees C in the doses studied. At 25 degrees C, the hypothermic responses were greatly reduced in magnitude, and most drugs produced biphasic or only hyperthermic responses. At 30 degrees C, dose-related hyperthermia was the usual response with the exception of meperidine which produced only hypothermia, although a temperature increase was observed after anileridine, a closely related phenylpiperidine. There is good correlation between the relative potencies of the agonists with respect to their hypothermic effects in mice and their relative potencies as analgesics in mice. The temperature effects of morphine are complex but appear to be characteristic of opiate agonists as a class. The magnitude and the direction of the temperature responses to opiates are dose-dependent and profoundly influenced by the environmental temperature.

Topics: Animals; Benzimidazoles; Body Temperature Regulation; Codeine; Dose-Response Relationship, Drug; Etorphine; Fentanyl; Hydromorphone; Isonipecotic Acids; Levorphanol; Male; Meperidine; Methadone; Mice; Morphine; Narcotics; Oxymorphone

Topics: Alphaprodine; Biomedical Research; Blood Pressure; Dental Pulp; Electric Stimulation; Heart Rate; Humans; Isonipecotic Acids; Levorphanol; Meperidine; Pain; Pain Perception; Pain Threshold; Pharmacology; Placebos; Promethazine; Pulse; Respiration; Toothache

Topics: Analgesics; Analgesics, Non-Narcotic; Animals; Antipyretics; Codeine; Isonipecotic Acids; Levorphanol; Morphine; Rabbits