2008
The effects of cannabinoids on serum cortisol and prolactin in humans
Ranganathan M, Braley G, Pittman B, Cooper T, Perry E, Krystal J, D’Souza D. The effects of cannabinoids on serum cortisol and prolactin in humans. Psychopharmacology 2008, 203: 737. PMID: 19083209, PMCID: PMC2863108, DOI: 10.1007/s00213-008-1422-2.Peer-Reviewed Original ResearchConceptsPlasma prolactin levelsPlasma cortisol levelsProlactin levelsNeuroendocrine effectsCannabis exposureHealthy controlsNeuroendocrine functionHormonal levelsCortisol levelsFrequent usersChronic cannabis exposureHealthy control subjectsDose-related increaseEffects of cannabinoidsBaseline hormonal levelsDose-related effectsDevelopment of toleranceLimited dose-response dataDose-dependent mannerBlunted increaseMultiple dosesControl subjectsSerum cortisolHormone levelsPlasma cortisolBlunted Psychotomimetic and Amnestic Effects of Δ-9-Tetrahydrocannabinol in Frequent Users of Cannabis
D'Souza DC, Ranganathan M, Braley G, Gueorguieva R, Zimolo Z, Cooper T, Perry E, Krystal J. Blunted Psychotomimetic and Amnestic Effects of Δ-9-Tetrahydrocannabinol in Frequent Users of Cannabis. Neuropsychopharmacology 2008, 33: 2505-2516. PMID: 18185500, PMCID: PMC3799954, DOI: 10.1038/sj.npp.1301643.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAmnesiaAttentionBrainDose-Response Relationship, DrugDouble-Blind MethodDronabinolDrug Administration ScheduleDrug ToleranceFemaleHallucinationsHallucinogensHumansHydrocortisoneMaleMarijuana AbuseMiddle AgedPerceptual DisordersProlactinPsychoses, Substance-InducedTachycardiaYoung AdultConceptsAmnestic effectsPerceptual alterationsDelta-9-TetrahydrocannabinolCannabis useSubjective effectsFrequent usersCannabisEffects of cannabinoidsIllicit substancesPsychotomimetic effectsEuphoric effectsHealthy controlsHealthy individualsMemoryImpairingPsychosisDose-related effectsIndividualsCortisolPsychotomimeticsAttentionPeopleUsersPlacebo-controlled studyEffect
2004
The Psychotomimetic Effects of Intravenous Delta-9-Tetrahydrocannabinol in Healthy Individuals: Implications for Psychosis
D'Souza DC, Perry E, MacDougall L, Ammerman Y, Cooper T, Wu YT, Braley G, Gueorguieva R, Krystal JH. The Psychotomimetic Effects of Intravenous Delta-9-Tetrahydrocannabinol in Healthy Individuals: Implications for Psychosis. Neuropsychopharmacology 2004, 29: 1558-1572. PMID: 15173844, DOI: 10.1038/sj.npp.1300496.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnxietyArousalAttentionBehaviorCognitionDose-Response Relationship, DrugDouble-Blind MethodDronabinolFemaleHallucinogensHemodynamicsHumansHydrocortisoneInjections, IntravenousMaleMemory, Short-TermMental RecallPanicProlactinPsychiatric Status Rating ScalesPsychometricsPsychoses, Substance-InducedSpeechVerbal LearningConceptsCannabinoid receptor functionWord recallRecognition recallVerbal fluencyCognitive deficitsProspective safety dataNegative symptomsAbuse disordersHealthy individualsCounterbalanced studyMonths poststudyRecallPsychotomimetic effectsPsychotic disordersReceptor functionPsychosisEndogenous psychosesIndividualsDistractibilityFluencyTransient symptomsDisordersEndocrine effectsSafety dataAnxiety
1999
Interactive effects of subanesthetic ketamine and haloperidol in healthy humans
Krystal J, D’Souza D, Karper L, Bennett A, Abi-Dargham A, Abi-Saab D, Cassello K, Bowers Jr. M, Vegso S, Heninger G, Charney D, Bowers M. Interactive effects of subanesthetic ketamine and haloperidol in healthy humans. Psychopharmacology 1999, 145: 193-204. PMID: 10463321, DOI: 10.1007/s002130051049.Peer-Reviewed Original Research
1997
Effect of alpha-methyl-para-tyrosine on response to cocaine challenge
Stine S, Krystal J, Petrakis I, Jatlow P, Heninger G, Kosten T, Chamey D. Effect of alpha-methyl-para-tyrosine on response to cocaine challenge. Biological Psychiatry 1997, 42: 181-190. PMID: 9232210, DOI: 10.1016/s0006-3223(96)00331-9.Peer-Reviewed Original ResearchConceptsDopamine metabolite homovanillic acidCocaine-induced euphoriaNorepinephrine metabolite 3Placebo-controlled studyBlood pressure responseMetabolite homovanillic acidReduced plasma levelsTyrosine hydroxylase inhibitorSerum cocaine levelsTuberoinfundibular dopamine systemAMPT pretreatmentAcute reductionIntranasal administrationPara-tyrosinePlasma levelsProlactin levelsCocaine challengeHomovanillic acidCatecholamine synthesisHeart rateHydroxylase inhibitorAlpha-methylDopamine systemCocaine levelsTherapeutic potential
1996
Serotonergic and noradrenergic dysregulation in alcoholism: m- chlorophenylpiperazine and yohimbine effects in recently detoxified alcoholics and healthy comparison subjects
Krystal JH, Webb E, Cooney NL, Kranzler HR, Southwick SW, Heninger GR, Charney DS. Serotonergic and noradrenergic dysregulation in alcoholism: m- chlorophenylpiperazine and yohimbine effects in recently detoxified alcoholics and healthy comparison subjects. American Journal Of Psychiatry 1996, 153: 83-92. PMID: 8540598, DOI: 10.1176/ajp.153.1.83.Peer-Reviewed Original ResearchConceptsHealthy comparison subjectsAlcoholic patientsComparison subjectsCortisol responseYohimbine infusionPostsynaptic noradrenergic receptorsBlood pressure responseDouble-blind conditionsNoradrenergic reactivitySaline placeboNoradrenergic receptorsMHPG levelsIntravenous infusionYohimbine effectMHPG responsePlasma levelsNoradrenergic systemPersistent alterationsNoradrenergic dysregulationMale inpatientsDrug effectsNeuroendocrine responsivityPatientsPhysiologic responsesPlasma cortisol
1994
Effects of sleep deprivation on serotonin function in depression
Salomon R, Delgado P, Licinio J, Krystal J, Heninger G, Charney D. Effects of sleep deprivation on serotonin function in depression. Biological Psychiatry 1994, 36: 840-846. PMID: 7893848, DOI: 10.1016/0006-3223(94)90595-9.Peer-Reviewed Original ResearchConceptsUndisturbed sleepSleep deprivationPRL riseDepressed patientsSerotonin functionFemale depressed patientsSD-induced changesIntravenous tryptophanAntidepressant treatmentPRL responseDepressed menTRP infusionScore changeMood changesPatientsMood ratingsMenProlactinConsiderable evidenceWomenLow sensitivitySignificant relationshipDeprivationInfusionSleepSpecificity of Ethanollike Effects Elicited by Serotonergic and Noradrenergic Mechanisms
Krystal JH, Webb E, Cooney N, Kranzler HR, Charney DS. Specificity of Ethanollike Effects Elicited by Serotonergic and Noradrenergic Mechanisms. JAMA Psychiatry 1994, 51: 898-911. PMID: 7944878, DOI: 10.1001/archpsyc.1994.03950110058008.Peer-Reviewed Original ResearchConceptsVisual analog scaleAnalog scaleScale scoreVisual analog scale scoreYohimbine hydrochlorideAnalog scale scoreDouble-blind conditionsEffect of mCPPReceptor partial agonistEffects of ethanolNoradrenergic mechanismsIntravenous infusionPlasma levelsSerotonergic systemNoradrenergic systemPlaceboDiscriminative propertiesMale inpatientsYohimbinePlasma prolactinCortisol levelsPartial agonistSerotonergic contributionAlcohol dependenceDays of testingSubanesthetic Effects of the Noncompetitive NMDA Antagonist, Ketamine, in Humans: Psychotomimetic, Perceptual, Cognitive, and Neuroendocrine Responses
Krystal JH, Karper LP, Seibyl JP, Freeman GK, Delaney R, Bremner JD, Heninger GR, Bowers MB, Charney DS. Subanesthetic Effects of the Noncompetitive NMDA Antagonist, Ketamine, in Humans: Psychotomimetic, Perceptual, Cognitive, and Neuroendocrine Responses. JAMA Psychiatry 1994, 51: 199-214. PMID: 8122957, DOI: 10.1001/archpsyc.1994.03950030035004.Peer-Reviewed Original ResearchMeSH KeywordsAdultBlood PressureCognitionDissociative DisordersDose-Response Relationship, DrugDouble-Blind MethodFemaleFrontal LobeHomovanillic AcidHumansHydrocortisoneKetamineMaleMethoxyhydroxyphenylglycolNeuropsychological TestsPerceptionProlactinPsychiatric Status Rating ScalesPsychoses, Substance-InducedPulseReceptors, N-Methyl-D-AspartateSchizophreniaSchizophrenic PsychologyConceptsWisconsin Card Sorting TestCard Sorting TestMini-Mental State ExaminationSorting TestNegative symptomsTests of vigilanceVerbal fluency taskDissociative statesState ExaminationFrontal cortical dysfunctionPsychosis Proneness ScalesClinician-Administered Dissociative States ScaleWord recallImmediate recallVerbal fluencyFluency taskVigilance taskCognitive deficitsCognitive functionRecallState scaleBrief Psychiatric Rating ScaleCortical dysfunctionTest dayPsychiatric Rating Scale
1993
m-Chlorophenylpiperazine Effects in Neuroleptic-Free Schizophrenic Patients: Evidence Implicating Serotonergic Systems in the Positive Symptoms of Schizophrenia
Krystal JH, Seibyl JP, Price LH, Woods SW, Heninger GR, Aghajanian GK, Charney DS. m-Chlorophenylpiperazine Effects in Neuroleptic-Free Schizophrenic Patients: Evidence Implicating Serotonergic Systems in the Positive Symptoms of Schizophrenia. JAMA Psychiatry 1993, 50: 624-635. PMID: 8102048, DOI: 10.1001/archpsyc.1993.01820200034004.Peer-Reviewed Original ResearchConceptsBrief Psychiatric Rating ScaleHealthy subjectsPsychiatric Rating ScalePositive symptomsSchizophrenic patientsPatient groupDouble-blind randomized comparisonVeterans Affairs Medical CenterRating ScaleNeuroleptic-free schizophrenic patientsFirst patient groupSerotonin partial agonistPrincipal outcome variableVisual analog scaleBaseline prolactin levelsHigher baseline levelsSymptoms of schizophreniaAnalog scaleRandomized comparisonAnxiogenic responseSum of scoresProlactin levelsSerotonergic systemSerotonin functionHormone levels
1991
Clinical phenomenology and neurobiology of cocaine abstinence: a prospective inpatient study
Satel SL, Price LH, Palumbo JM, McDougle CJ, Krystal JH, Gawin F, Charney DS, Heninger GR, Kleber HD. Clinical phenomenology and neurobiology of cocaine abstinence: a prospective inpatient study. American Journal Of Psychiatry 1991, 148: 1712-1716. PMID: 1957935, DOI: 10.1176/ajp.148.12.1712.Peer-Reviewed Original ResearchConceptsHomovanillic acidGrowth hormoneRating ScaleGH valuesNormal subjectsCentral dopamine functionProspective inpatient studySerial blood samplesVisual analog scaleDSM-III-R cocaine dependenceSignificant decreaseSymptom Rating ScaleShort clinical rating scalesClinical rating scalesBeck Depression InventoryPhysical Symptoms ScalePatients prolactinInpatient managementSuch patientsAnalog scaleInpatient studyDopaminergic functionPatient levelBlood samplesPharmacological agentsEffects of ritanserin on the behavioral, neuroendocrine, and cardiovascular responses to meta-chlorophenylpiperazine in healthy human subjects
Seibyl J, Krystal J, Price L, Woods S, D'Amico C, Heninger G, Charney D. Effects of ritanserin on the behavioral, neuroendocrine, and cardiovascular responses to meta-chlorophenylpiperazine in healthy human subjects. Psychiatry Research 1991, 38: 227-236. PMID: 1754635, DOI: 10.1016/0165-1781(91)90013-f.Peer-Reviewed Original ResearchConceptsGrowth hormone responseEffects of ritanserinHealthy male subjectsHealthy human subjectsSelf-rated anxietyMCPP infusionAgonist mCPPCardiovascular effectsHT2 receptorCardiovascular responsesNeuroendocrine responsesRitanserinHormone responseMale subjectsCortisol elevationBehavioral responsesHuman subjectsMCPPSubjectsResponsePlaceboPremedicationChlorophenylpiperazineInfusionAntagonist
1990
Clinical data on the role of serotonin in the mechanism(s) of action of antidepressant drugs.
Price LH, Charney DS, Delgado PL, Goodman WK, Krystal JH, Woods SW, Heninger GR. Clinical data on the role of serotonin in the mechanism(s) of action of antidepressant drugs. The Journal Of Clinical Psychiatry 1990, 51 Suppl: 44-50; discussion 51-2. PMID: 2182616.Peer-Reviewed Original ResearchConceptsIntravenous L-tryptophanBrain serotonin functionAntidepressant drug actionRole of serotoninL-tryptophanThymoleptic drugsPlasma TrpView of evidencePRL responseNeuroendocrine effectsSerum prolactinSerotonin functionAntidepressant drugsClinical dataTherapeutic effectPreclinical studiesReceptor sensitivityClinical settingChallenge paradigmDrug actionRecent evidenceAntidepressantsProlactinDrugsDepression
1989
Responses to i.v. L-tryptophan in MDMA users.
Price LH, Ricaurte GA, Krystal JH, Heninger GR. Responses to i.v. L-tryptophan in MDMA users. NIDA Research Monograph 1989, 95: 421-2. PMID: 2577044.Peer-Reviewed Original ResearchNeuroendocrine and Mood Responses to Intravenous L-Tryptophan in 3,4-Methylenedioxymethamphetamine (MDMA) Users: Preliminary Observations
Price LH, Ricaurte GA, Krystal JH, Heninger GR. Neuroendocrine and Mood Responses to Intravenous L-Tryptophan in 3,4-Methylenedioxymethamphetamine (MDMA) Users: Preliminary Observations. JAMA Psychiatry 1989, 46: 20-22. PMID: 2562914, DOI: 10.1001/archpsyc.1989.01810010022003.Peer-Reviewed Original Research