dimethyltryptamine/fever

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Potentiation of 5-methoxy-N,N-dimethyltryptamine-induced hyperthermia by harmaline and the involvement of activation of 5-HT1A and 5-HT2A receptors.

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5-Methoxy-N,N-dimethyltryptamine (5-MeO-DMT) and harmaline are serotonin (5-HT) analogs often abused together, which alters thermoregulation that may indicate the severity of serotonin toxicity. Our recent studies have revealed that co-administration of monoamine oxidase inhibitor harmaline leads to

Effects of various neuroleptics on rabbit hyperthermia induced by N, N-Dimethyltryptamine (DMT) and d-amphetamine.

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The effects of various neuroleptics were studied on N, N-dimethyltryptamine (DMT, 3.2 mg/kg) and d-amphetamine (3.2 mg/kg) induced hyperthermia in the rabbit. Complete dose-effect curves were obtained. The order of potency for antagonism of DMT-induced hyperthermia was: methiothepin greater than

Pharmacodynamic effects of serotonin (5-HT) receptor ligands in pigs: stimulation of 5-HT2 receptors induces malignant hyperthermia.

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In pigs, the serotonin-2 (5-HT2) receptor agonist 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI), 0.8 mg/kg, induced "psychotic" behaviour (e.g., grimacing, backward locomotion, blank stare) and a muscular syndrome, which is known as malignant hyperthermia (MH) in pigs and humans. This syndrome

Inhibition of phrenic and sympathetic vasomotor neurons in cats by the serotonin analog 5-methoxy-N,N-dimethyltryptamine.

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5-Methoxy-N,N-dimethyltryptamine (20-200 microgram/kg) inhibits phrenic and sympathetic neural discharges and depresses blood pressure. The effects occur within seconds after injection. Complete recovery occurs, on the average, after 20 min. The inhibition of phrenic nerve discharges is prevented

Selective desensitization of serotonin (5-HT) receptor-mediated hyperthermia by mianserin and other 5-HT antagonists.

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Hyperthermic responses to 6-chloro-2-(1-piperazinyl)-pyrazine (MK-212) and hypothermic responses to 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT) were assessed in rats as an in vivo index of the responsiveness of 5-HT2 and 5-HT1A receptors, respectively. Forty-eight hours after a single

Selective cross-tolerance to 5-HT1A and 5-HT2 receptor-mediated temperature and corticosterone responses.

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The repeated administration of 5-methoxy-N,N-dimethyltryptamine (5-MeODMT, 3 mg/kg, twice daily for 14 days) significantly diminished hypothermia and corticosterone secretion induced by an acute challenge with the 5-HT1A agonist 8-OH-DPAT (0.1 mg/kg) when compared to the responses in animals treated

Pharmacological effects of oxaprotiline enantiomers on the central serotonin system.

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The study examined the effect of both oxaprotiline (OXA) enantiomers on the serotonin system in rats and mice. (+)-OXA and (-)-OXA partly inhibit the behavioral syndrome induced by 8-OH-DPAT and 5-methoxy-dimethyltryptamine (5-MeODMT) in normal and reserpinized rats. Imipramine and desipramine

Development of a mechanism-based pharmacokinetic/pharmacodynamic model to characterize the thermoregulatory effects of serotonergic drugs in mice.

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We have shown recently that concurrent harmaline, a monoamine oxidase-A inhibitor (MAOI), potentiates serotonin (5-HT) receptor agonist 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT)-induced hyperthermia. The objective of this study was to develop an integrated pharmacokinetic/pharmacodynamic (PK/PD)

Effects of iproniazid, chlorpromazine and methiothepin on DMT-induced changes in body temperature, pupillary dilatation, blood pressure and EEG in the rabbit.

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The effects of i.v. N,N-dimethyltryptamine (DMT) were studied on arterial blood pressure, rectal temperature, pupil size and the electroencephalogram of the rabbit. DMT altered these parameters in a dose-related manner causing increased blood pressure, hyperthermia, pupilary mydriasis and activation

Thermoregulatory responses to serotonin (5-HT) receptor stimulation in the rat. Evidence for opposing roles of 5-HT2 and 5-HT1A receptors.

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The effects of serotonergic agonists and antagonists on the body temperatures of rats were investigated. The administration of the serotonin (5-HT) agonist 6-chloro-2(1-piperazinyl)-pyrazine (MK-212) produced a dose-related increase in body temperature. A maximal increase in body temperature of

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