2023
Randomized controlled trial of the glycine transporter 1 inhibitor PF-03463275 to enhance cognitive training and neuroplasticity in schizophrenia
Surti T, Ranganathan M, Johannesen J, Gueorguieva R, Deaso E, Kenney J, Krystal J, D'Souza D. Randomized controlled trial of the glycine transporter 1 inhibitor PF-03463275 to enhance cognitive training and neuroplasticity in schizophrenia. Schizophrenia Research 2023, 256: 36-43. PMID: 37141764, PMCID: PMC10257994, DOI: 10.1016/j.schres.2023.04.010.Peer-Reviewed Original ResearchConceptsGlycine transporter 1Cytochrome P450 2D6 extensive metabolizersGlyT1 inhibitorsWeeks of washoutWeeks of CTMedication adherenceReceptor hypofunctionImpaired neuroplasticityPharmacodynamic variabilityNMDAR functionExtensive metabolizersTreatment periodPsychotic symptomsStable outpatientsCognitive impairmentGlyT1 occupancyTransporter 1CTNeuroplasticityCognitive training strategiesSchizophreniaComputerized CTCognitive performanceAugmentation studiesGreater improvement
2019
Influence of combined treatment with naltrexone and memantine on alcohol drinking behaviors: a phase II randomized crossover trial
Krishnan-Sarin S, O’Malley S, Franco N, Cavallo DA, Tetrault JM, Shi J, Gueorguieva R, Pittman B, Krystal JH. Influence of combined treatment with naltrexone and memantine on alcohol drinking behaviors: a phase II randomized crossover trial. Neuropsychopharmacology 2019, 45: 319-326. PMID: 31590179, PMCID: PMC6901445, DOI: 10.1038/s41386-019-0536-z.Peer-Reviewed Original ResearchConceptsAlcohol drinking behaviorFirst treatment periodTreatment periodNumber of drinksCrossover trialDrinking behaviorEfficacy of naltrexoneOpioid antagonist naltrexoneNMDA antagonist memantinePositive family historyDay treatment periodSelf-administration periodAlcohol-induced stimulationAd lib accessMemantine treatmentAntagonist naltrexoneOpioid systemFamily historyNTXPriming drinkMemantineNaltrexoneAlcohol cravingHeavy drinkersAlcohol dependenceReduced Salience and Enhanced Central Executive Connectivity Following PTSD Treatment
Abdallah CG, Averill CL, Ramage AE, Averill LA, Alkin E, Nemati S, Krystal JH, Roache JD, Resick P, Young-McCaughan S, Peterson AL, Fox P. Reduced Salience and Enhanced Central Executive Connectivity Following PTSD Treatment. Chronic Stress 2019, 3: 2470547019838971. PMID: 31008419, PMCID: PMC6469713, DOI: 10.1177/2470547019838971.Peer-Reviewed Original ResearchPosttraumatic stress disorderCognitive processing therapyCentral executive networkSymptom provocationPTSD treatmentSecondary analysisGroup cognitive processing therapyPTSD participantsGlobal brain connectivityEffective PTSD treatmentExecutive networkFunctional magnetic resonance imagingMagnetic resonance imagingEffect of treatmentUnknown neurobiological mechanismsUS Army soldiersTreatment periodWeek 8Higher pretreatmentMRI scansPrimary analysisResonance imagingSalience networkStress disorderBrain connectivity
1989
Intermittent naloxone attenuates the development of physical dependence on methadone in rhesus monkeys
Krystal J, Walker M, Heninger G. Intermittent naloxone attenuates the development of physical dependence on methadone in rhesus monkeys. European Journal Of Pharmacology 1989, 160: 331-338. PMID: 2540995, DOI: 10.1016/0014-2999(89)90088-5.Peer-Reviewed Original ResearchConceptsOpiate withdrawal syndromeInjection of naloxoneWithdrawal syndromeTreatment periodNaloxone injectionNaloxone administrationWithdrawal responsePhysical dependenceDays of methadoneAntagonist exposureMethadone treatmentDaily injectionsLack of incrementReceptor mechanismsDrug combinationsNaloxoneRhesus monkeysSyndromeDay 16MethadoneSame monkeysManagement of situationsInjectionAdministrationDays