(n.) A bitter white crystalline alkaloid found in opium, possessing strong narcotic properties, and much used as an anodyne; -- called also morphia, and morphina.
Example Sentences:
(1) Intrathecal injection of zopiclone potentiated morphine antinociception, while the intracerebroventricular injection of zopiclone failed to enhance morphine antinociception and the intracerebroventricular injection of flumazepil to antagonize the intraperitoneal-zopiclone-induced increase in morphine antinociception.
(2) As a consequence, similar response curves were obtained for urine specimens containing morphine or barbiturates.
(3) The second experiments entailed use of the nonspecific opiate antagonist, naloxone, as well as the specific delta antagonist, ICI 154,129, against seizures induced by icv-administered morphine, morphiceptin, DADL, or DSLET.
(4) The results clearly show that the acute hyperthermia of unrestrained rats induced by either peripheral or central injections of morphine is not caused by activation of the pituitary-adrenal axis.
(5) We studied the effect of low-dose intrathecal morphine (0.00-0.20 mg) on pain relief and the incidence of side effects after cholecystectomy in 139 patients divided into eight groups according to intrathecal morphine dose: groups 1 (0.00 mg), 2 (0.04 mg), 3 (0.06 mg), 4 (0.08 mg), 5 (0.10 mg), 6 (0.12 mg), 7 (0.15 mg), and 8 (0.20 mg).
(6) In contrast, methysergide, ketanserin and 6-OHDA abolished the antisecretory effect of morphine.
(7) The analgesic activity of morphine was assessed by the hot-plate technique in the offspring of female CFE rats that had received morphine twice daily on days 5 to 12 of pregnancy.
(8) A marked analgesic effect was found after application of morphine hydrochloride patch containing Azone and N-methyl-2-pyrrolidone.
(9) From the results presented it appears that morphine produces a reciprocal change in the activity evoked in extensor and flexor reflex pathways.
(10) These marked steroid-induced changes in MS responsiveness could not be explained by altered pharmacokinetic disposition of morphine.
(11) Sixty-three patients were randomly divided into six groups by the following intrathecal morphine injection: group 1 (0 mg), group 2 (0.025 mg), group 3 (0.05 mg), group 4 (0.075 mg), group 5 (0.1 mg), and group 6 (0.125 mg).
(12) Additional studies on the blood to brain transport of human 125I-IL-1 alpha showed no modification by dexamethasone, morphine, indomethacin or alpha-melanocyte stimulating hormone.
(13) At both 24 h and 1 week, the inflamed paw showed pronounced supersensitivity to the antinociceptive action of morphine against noxious pressure.
(14) These results are discussed in relation to previous reports suggesting a common addiction liability for both morphine and alcohol in inbred strains of animals.
(15) An altered response to morphine was obtained; the effect of morphine on copulatory behavior was diminished while morphine's effect on exploratory activity was potentiated.
(16) In the MVD, all esters appeared to irreversibly block the agonist effect of morphine, but none of the compounds irreversibly antagonized [D-Ala2,D-Leu5]enkephalin to a significant degree.
(17) Morphine administered intracerebroventricularly had little effect on sexual responding, even at doses which produced other side effects.
(18) Morphine-induced vasoconstriction was antagonized by high concentrations of of naloxone or mepyramine and may be due to release of histamine by a naloxone-sensitive mechanism.
(19) In particular, the first tetrapeptide had twice the activity of morphine, while the potency of the dipeptides was less than one twentieth that of morphine.
(20) Morphine addition to the PGE1-stimulated minces did not prevent or reverse stimulation of [3H]cAMP accumulation in any of the three experimental groups.
Opiate
Definition:
(n.) Originally, a medicine of a thicker consistence than sirup, prepared with opium.
(n.) Any medicine that contains opium, and has the quality of inducing sleep or repose; a narcotic.
(n.) Anything which induces rest or inaction; that which quiets uneasiness.
(a.) Inducing sleep; somniferous; narcotic; hence, anodyne; causing rest, dullness, or inaction; as, the opiate rod of Hermes.
(v. t.) To subject to the influence of an opiate; to put to sleep.
Example Sentences:
(1) The second experiments entailed use of the nonspecific opiate antagonist, naloxone, as well as the specific delta antagonist, ICI 154,129, against seizures induced by icv-administered morphine, morphiceptin, DADL, or DSLET.
(2) Opiate agonists and endogenous opioid peptides inhibit electrolyte secretion both in vitro and in vivo.
(3) It appears that tricyclic antidepressants act in a fashion different from opiate drugs that alter the sensory discriminative component of pain.
(4) The results are discussed with reference to the possible mechanism(s) via which injected and endogenous opiates may affect motor performance by attenuating GABA transmission in the nigra.
(5) Pharmacological data suggest that opiates, acting indirectly via the catecholaminergic system, are involved in the inhibition of LH release and the stimulation of PRL secretion.
(6) Such disturbances may be induced by opiates, benzodiazepines, phenothiazines, butyrophenones, ketamine, etomidate, propofol, nitrous oxide, and halogenated inhalation anesthetics as well as by H2-blocking agents such as cimetidine.
(7) From these results, we conclude that opiate peptides are released in response to the suckling stimulus in the cynomolgus monkey and that they mediate the effects of suckling on PRL secretion in both gonadal-intact and agonadal cynomolgus monkeys.
(8) Its potency is 4-5 times greater than that of the opiate antagonist naloxone.
(9) A cost-effective immunoassay for the detection of opiates in urine has been developed using commercial reagents on a centrifugal analyser.
(10) Drugs used to promote food intake and weight gain, such as cyproheptadine, amitriptyline, clonidine and opiate antagonists, have provided disappointing results.
(11) An alternative approach, which correlates the structure-activity data of opiate compounds with that of the enkephalins, is described and shown to produce a model consistent with the available structure-activity data.
(12) However, opiate treatment is not a new therapeutic concept in psychiatry.
(13) The inhibitory response was not decreased by treatment with atropine, hexamethonium, yohimbine or naloxone, suggesting that muscarinic, nicotinic, alpha 2 adrenergic or opiate receptors were not being stimulated.
(14) The hypothesis that opiate agonism requires an N substituent in the axial position does not appear to be consistent with the increased potency of beta isomers in which axial N substituents are thermodynamically more unstable.
(15) We report that exposure of rat spinal cord-dorsal root ganglion cocultured neurons to kappa-opiate agonist is accompanied by a 60-70% reduction in the level of the alpha i subunit of GTP-binding proteins.
(16) Cerebrospinal fluid (CSF) opiate activity has been found to be elevated in two studies.
(17) PBEir increased with both opiates immediately after initiation of CPB and remained so during the rest of the study.
(18) Diclofenac is an alternative to opiates in the management of postoperative pain.
(19) On the other hand, if the tissue-derived opiates were from prodynorphin, only Leu-enkephalin should be found.
(20) Analysis of patient questionnaires suggests more enthusiasm for patient-controlled analgesia, but in this study, it was difficult to clearly demonstrate any significant advantage for pain management or amount of opiate administered.