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1.
Sci Rep ; 14(1): 8712, 2024 04 15.
Article in English | MEDLINE | ID: mdl-38622243

ABSTRACT

What humans look at strongly determines what they see. We show that individual differences in the tendency to look at positive stimuli are stable across time and across contents, establishing gaze positivity preference as a perceptual trait that determines the amount of positively valence stimuli individuals select for visual processing. Furthermore, we show that patients with major depressive disorder exhibit consistently low positivity preference before treatment. In a subset of patients, we also assessed the positivity preference after two months of treatment in which positivity gaze preference increased to levels similar to healthy individuals. We discuss the possible practical diagnostic applications of these findings, as well as how this general gaze-related trait may influence other behavioral and psychological aspects.


Subject(s)
Depressive Disorder, Major , Humans , Visual Perception , Attention , Individuality , Phenotype
2.
J Psychiatr Res ; 173: 387-397, 2024 May.
Article in English | MEDLINE | ID: mdl-38598877

ABSTRACT

INTRODUCTION: Expert consensus operationalized treatment response and remission in obsessive-compulsive disorder (OCD) as a Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) reduction ≥35% and score ≤12 with ≤2 on Clinical Global Impressions Improvement (CGI-I) and Severity (CGI-S) scales, respectively. However, there has been scant empirical evidence supporting these definitions. METHODS: We conducted a systematic review and an individual participant data meta-analysis of randomized-controlled trials (RCTs) in adults with OCD to determine optimal Y-BOCS thresholds for response and remission. We estimated pooled sensitivity/specificity for each percent reduction threshold (response) or posttreatment score (remission) to determine response and remission defined by a CGI-I and CGI-S ≤ 2, respectively. RESULTS: Individual participant data from 25 of 94 eligible RCTs (1235 participants) were included. The optimal threshold for response was ≥30% Y-BOCS reduction and for remission was ≤15 posttreatment Y-BOCS. However, differences in sensitivity and specificity between the optimal and nearby thresholds for response and remission were small with some uncertainty demonstrated by the confidence ellipses. CONCLUSION: While the empirically derived Y-BOCS thresholds in our meta-analysis differ from expert consensus, given the predominance of data from more recent trials of OCD, which involved more refractory participants and novel treatment modalities as opposed to first-line therapies, we recommend the continued use of the consensus definitions.


Subject(s)
Obsessive-Compulsive Disorder , Adult , Humans , Obsessive-Compulsive Disorder/drug therapy , Psychiatric Status Rating Scales , Treatment Outcome
3.
Focus (Am Psychiatr Publ) ; 21(3): 315-328, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37404971

ABSTRACT

Post-traumatic stress disorder (PTSD) presents a major public health problem for which currently available treatments are modestly effective. We report the findings of a randomized, double-blind, placebo-controlled, multi-site phase 3 clinical trial (NCT03537014) to test the efficacy and safety of 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy for the treatment of patients with severe PTSD, including those with common comorbidities such as dissociation, depression, a history of alcohol and substance use disorders, and childhood trauma. After psychiatric medication washout, participants (n = 90) were randomized 1:1 to receive manualized therapy with MDMA or with placebo, combined with three preparatory and nine integrative therapy sessions. PTSD symptoms, measured with the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5, the primary endpoint), and functional impairment, measured with the Sheehan Disability Scale (SDS, the secondary endpoint) were assessed at baseline and at 2 months after the last experimental session. Adverse events and suicidality were tracked throughout the study. MDMA was found to induce significant and robust attenuation in CAPS-5 score compared with placebo (P < 0.0001, d = 0.91) and to significantly decrease the SDS total score (P = 0.0116, d = 0.43). The mean change in CAPS-5 scores in participants completing treatment was -24.4 (s.d. 11.6) in the MDMA group and -13.9 (s.d. 11.5) in the placebo group. MDMA did not induce adverse events of abuse potential, suicidality or QT prolongation. These data indicate that, compared with manualized therapy with inactive placebo, MDMA-assisted therapy is highly efficacious in individuals with severe PTSD, and treatment is safe and well-tolerated, even in those with comorbidities. We conclude that MDMA-assisted therapy represents a potential breakthrough treatment that merits expedited clinical evaluation. Appeared originally in Nat Med 2021; 27:1025-1033.

4.
Brain Behav ; 12(1): e2411, 2022 01.
Article in English | MEDLINE | ID: mdl-34843172

ABSTRACT

INTRODUCTION: Several studies have shown an association between panic disorder (PD) and reduced balance abilities, mainly based on functional balance scales. This pilot study aims to demonstrate the feasibility of studying balance abilities of persons with PD (PwPD) using computerized static and, for the first time, dynamic balance measurements in order to characterize balance control strategies employed by PwPD. METHODS: Twelve PwPD and 11 healthy controls were recruited. PD diagnosis was confirmed using the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV), and the severity of symptoms was evaluated using the Hamilton Anxiety Scale (HAM-A), PD Severity Scales (PDSS), and Panic and Agoraphobia Scale (PAS). Balance was clinically assessed using the Activities-Specific Balance Confidence (ABC) scale and physically by the Mini-Balance Evaluation Systems Test (Mini-BESTest). Dizziness was evaluated using the Dizziness Handicap Inventory (DHI) scale. Postural control was evaluated statically by measuring body sway and dynamically by measuring body responses to rapid unexpected physical perturbations. RESULTS: PwPD had higher scores on the HAM-A (17.6 ± 10.3 vs. 3.0 ± 2.9; p < .001), PDSS (11.3 ± 5.1 vs. 0; p < .001), and PAS (20.3 ± 8.7 vs. 0; p < .001) questionnaires and lower scores on the balance scales compared to the controls (ABC scale: 156.2 ± 5.9 vs. 160 ± 0.0, p = .016; Mini-BESTest: 29.4 ± 2.1 vs. 31.4 ± 0.9, p = .014; DHI: 5.3 ± 4.4 vs. 0.09 ± 0.3, p < .001). In the static balance tests, PwPD showed a not-significantly smaller ellipse area of center of pressure trajectory (p = .36) and higher body sway velocity (p = .46), whereas in the dynamic balance tests, PwPD had shorter recovery time from physical perturbations in comparison to controls (2.1 ± 1.2s vs. 1.6 ± 0.9 s, p = .018). CONCLUSION: The computerized balance tests results point to an adoption of a ''postural rigidity'' strategy by the PwPD, that is, reduced dynamic adaptations in the face of postural challenges. This may reflect a nonsecure compensatory behavior. Further research is needed to delineate this strategy.


Subject(s)
Panic Disorder , Adaptation, Physiological , Agoraphobia , Humans , Pilot Projects , Postural Balance/physiology
5.
J Clin Psychopharmacol ; 41(6): 673-675, 2021.
Article in English | MEDLINE | ID: mdl-34668877

ABSTRACT

PURPOSE: Ketamine, a noncompetitive, high-affinity antagonist of the N-methyl-d-aspartate-type glutamate receptor, has a rapid effect in patients with treatment-resistant disorder, but many patients who respond to intravenous ketamine relapse within several days. The objective of this study was to examine the long-term outcome of patients' mood 5 years after ketamine treatment. METHODS: Sixteen electroconvulsive therapy referrals received at least 1 intravenous ketamine treatment in addition to their stable antidepressant medications. Depression was evaluated using the Inventory of Depressive Symptomatology-Clinician-Rated, Hamilton Rating Scales for Depression, and Montgomery-Åsberg Depression Rating Scale. Anxiety was measured using the Hamilton Rating Scale. RESULTS: Of 16 patients treated, 6 achieved complete remission, 3 partially responded, and 7 did not respond. At baseline, all patients were treated with antidepressants, 14 patients were also treated with neuroleptics, of whom 5 patients were treated with quetiapine. The time to relapse in the 5 patients taking quetiapine was significantly longer than in patients who were taking other neuroleptics (965.83 ± 824.68 vs 80.5 ± 114.3, Z = 7.001, P = 0.0001). At the 5-year follow-up, 3 of the patients taking quetiapine maintained their remission. Overall levels of depression and anxiety at all times were improved in comparison to baseline. CONCLUSIONS: Our follow-up results suggest that the combination of quetiapine and ketamine can prolong time to relapse after ketamine treatment in patients with treatment-resistant disorder.


Subject(s)
Antidepressive Agents/pharmacology , Antipsychotic Agents/pharmacology , Depressive Disorder, Treatment-Resistant/drug therapy , Ketamine/pharmacology , Quetiapine Fumarate/pharmacology , Adult , Antidepressive Agents/administration & dosage , Antipsychotic Agents/administration & dosage , Drug Therapy, Combination , Female , Follow-Up Studies , Humans , Ketamine/administration & dosage , Male , Middle Aged , Outcome Assessment, Health Care , Quetiapine Fumarate/administration & dosage , Remission Induction , Secondary Prevention
6.
Nat Med ; 27(6): 1025-1033, 2021 06.
Article in English | MEDLINE | ID: mdl-33972795

ABSTRACT

Post-traumatic stress disorder (PTSD) presents a major public health problem for which currently available treatments are modestly effective. We report the findings of a randomized, double-blind, placebo-controlled, multi-site phase 3 clinical trial (NCT03537014) to test the efficacy and safety of 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy for the treatment of patients with severe PTSD, including those with common comorbidities such as dissociation, depression, a history of alcohol and substance use disorders, and childhood trauma. After psychiatric medication washout, participants (n = 90) were randomized 1:1 to receive manualized therapy with MDMA or with placebo, combined with three preparatory and nine integrative therapy sessions. PTSD symptoms, measured with the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5, the primary endpoint), and functional impairment, measured with the Sheehan Disability Scale (SDS, the secondary endpoint) were assessed at baseline and at 2 months after the last experimental session. Adverse events and suicidality were tracked throughout the study. MDMA was found to induce significant and robust attenuation in CAPS-5 score compared with placebo (P < 0.0001, d = 0.91) and to significantly decrease the SDS total score (P = 0.0116, d = 0.43). The mean change in CAPS-5 scores in participants completing treatment was -24.4 (s.d. 11.6) in the MDMA group and -13.9 (s.d. 11.5) in the placebo group. MDMA did not induce adverse events of abuse potential, suicidality or QT prolongation. These data indicate that, compared with manualized therapy with inactive placebo, MDMA-assisted therapy is highly efficacious in individuals with severe PTSD, and treatment is safe and well-tolerated, even in those with comorbidities. We conclude that MDMA-assisted therapy represents a potential breakthrough treatment that merits expedited clinical evaluation.


Subject(s)
Drug-Related Side Effects and Adverse Reactions/epidemiology , N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage , Stress Disorders, Post-Traumatic/drug therapy , Adult , Combined Modality Therapy , Double-Blind Method , Drug-Related Side Effects and Adverse Reactions/pathology , Female , Humans , Male , Middle Aged , N-Methyl-3,4-methylenedioxyamphetamine/adverse effects , Stress Disorders, Post-Traumatic/epidemiology , Stress Disorders, Post-Traumatic/pathology , Treatment Outcome
7.
Int J Geriatr Psychiatry ; 36(1): 106-115, 2021 01.
Article in English | MEDLINE | ID: mdl-33411378

ABSTRACT

OBJECTIVES: Despite their impact on daily functioning, we have limited understanding of the executive functioning of older adults with bipolar disorder (OABD). Even less is known about the possible differences in the executive functioning of OABD and older adults with unipolar depression (OADEP). METHODS: After excluding acutely ill patients, the executive functioning of OABD was compared to that of OADEP and healthy controls (n = 22, n = 20, n = 22; respectively). Cognitive insight, a sub-domain of executive functioning, was operationalized as the discrepancy between the participants' self-reported cognitive functioning and appraisals that were made by their care partners. To complement the cognitive profiling, the groups were compared in information processing speed, verbal memory, and visual-spatial memory. RESULTS: OABD were impaired in several cognitive domains compared to healthy controls, most prominently in executive functioning and memory. OABD had poorer executive functioning and visual-spatial memory than OADEP. The findings also tentatively point toward intact cognitive insight among OABD, while OADEP seem to have a heightened level of awareness of their cognitive impairment. CONCLUSIONS: OABD have a unique profile of cognitive impairment compared to OADEP. It is characterized by a more severe cognitive impairment, accompanied by relatively intact cognitive insight. The findings may help clarify the cognitive profile of OABD and assist in the development of cognitive rehabilitation programs tailored to their needs. They should, however, be considered preliminary and await further research.


Subject(s)
Bipolar Disorder , Aged , Cognition , Executive Function , Humans , Memory , Neuropsychological Tests
8.
Int J Eat Disord ; 53(2): 210-218, 2020 02.
Article in English | MEDLINE | ID: mdl-31639233

ABSTRACT

OBJECTIVE: Major depressive disorder (MDD) is common in anorexia nervosa (AN), associated with worse outcome and greater suicide risk. Electroconvulsive therapy (ECT) is highly effective in the treatment of MDD refractory to antidepressive treatment. We describe a case series of female adolescents with AN receiving ECT for MDD resistant to treatment and/or with severe suicide risk. METHOD: We retrospectively analyzed the files of all 30 adolescent females hospitalized in our department because of AN between 1998 and 2017 and treated with ECT. Severity of eating disorder (ED) and depressive symptoms was retrospectively assessed using the Clinical Global Impression-Severity Scale. RESULTS: Patients were severely depressed and suicidal on admission. All were resistant to antidepressants. A significant deterioration in depression, with severe suicidality, occurred from admission to pre-ECT, with concomitant improvement in ED symptoms and increase in body mass index (BMI). Significant improvement in depressive and ED symptoms and increase in BMI occurred following ECT, continuing to discharge. Adverse effects were mostly minimal. Fifty-three percentage of the patients were rehospitalized within the first year after ECT, mostly because of deterioration of depression and attempted suicide. Several years after discharge, 46.6% of the patients had no evidence of depression, suicidality, and ED-symptomatology, and another 23% had only evidence of ED symptomatology. DISCUSSION: ECT is safe and well tolerated in AN with severe comorbid treatment resistant MDD and/or with increased suicide risk. Many AN patients undergoing ECT may be remitted at long-term follow-up.


Subject(s)
Anorexia Nervosa/therapy , Depression/therapy , Electroconvulsive Therapy/methods , Adolescent , Comorbidity , Female , Humans , Retrospective Studies , Treatment Outcome
10.
J Clin Psychopharmacol ; 39(1): 78-81, 2019.
Article in English | MEDLINE | ID: mdl-30489382

ABSTRACT

OBJECTIVE: Evidence both from animal and human studies suggests a role for dopaminergic pathways in the treatment of depression. Ropinirole, a selective agonist of dopamine D2/D3, is in use for the treatment of parkinsonism. Preliminary evidence suggests that such agonists might be useful as antidepressants. We tested whether an add-on ropinirole is an effective in depressed patients. METHODS: We conducted a double-blind, randomized, placebo-controlled trial of add-on ropinirole in depressed patients unresponsive to at least one antidepressant. We recruited 32 unipolar and bipolar patients who remained depressed (modified 21-item Hamilton Depression Rating Scale) despite at least 4 weeks of treatment with an adequate dose of antidepressant medication. Patients received either 2 mg of oral ropinirole or placebo twice daily added on to their current medication and were evaluated weekly for 7 weeks using the Hamilton Depression Rating Scale and Montgomery-Asberg Depression Rating Scale. RESULTS: No difference in primary or secondary outcome measures was detected between the treatment and control groups. DISCUSSION: These results differ from previous studies and are unexpected in light of theoretical considerations. This may indicate that there are differences in pharmacological activity between ropinirole and other dopaminergic agents such as pramipexole.


Subject(s)
Antidepressive Agents/administration & dosage , Antidepressive Agents/therapeutic use , Depression/drug therapy , Indoles/administration & dosage , Indoles/therapeutic use , Dopamine Agonists/therapeutic use , Double-Blind Method , Drug Therapy, Combination , Female , Humans , Male , Middle Aged , Pilot Projects
11.
Gen Hosp Psychiatry ; 48: 37-41, 2017 09.
Article in English | MEDLINE | ID: mdl-28917393

ABSTRACT

OBJECTIVE: Implantable Cardioverter Defibrillators (ICDs), have previously been associated with the onset of depression and anxiety. The aim of this one-year prospective study was to evaluate the rate of new onset psychopathological symptoms after elective ICD implantation. METHODS: A total of 158 consecutive outpatients who were scheduled for an elective ICD implantation were diagnosed and screened based on the Mini International Neuropsychiatric Interview (MINI). Depression and anxiety were evaluated using the Hamilton Rating Scales for Depression (HAM-D) and Anxiety (HAM-A). Patient's attitude toward the ICD device was evaluated using a Visual Analog Scale (VAS). RESULTS: Patients' mean age was 64±12.4years; 134 (85%) were men, with the majority of patients performing the procedure for reasons of 'primary prevention'. According to the MINI diagnosis at baseline, three (2%) patients suffered from major depressive disorder and ten (6%) from dysthymia. Significant improvement in HAM-D mean scores was found between baseline, three months and one year after implantation (6.50±6.4; 4.10±5.3 and 2.7±4.6, respectively F(2100)=16.42; p<0.001). There was a significantly more positive attitude toward the device over time based on the VAS score [F(2122)=53.31, p<0.001]. CONCLUSIONS: ICD implantation significantly contributes to the reduction of depressive symptoms, while the overall mindset toward the ICD device was positive and improved during the one-year follow-up.


Subject(s)
Cardiovascular Diseases/therapy , Defibrillators, Implantable/psychology , Depression/prevention & control , Depressive Disorder/prevention & control , Outcome Assessment, Health Care , Primary Prevention , Aged , Anxiety/diagnosis , Anxiety/epidemiology , Anxiety/prevention & control , Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/psychology , Comorbidity , Defibrillators, Implantable/statistics & numerical data , Depression/diagnosis , Depression/epidemiology , Depressive Disorder/diagnosis , Depressive Disorder/epidemiology , Female , Follow-Up Studies , Humans , Male , Middle Aged , Outcome Assessment, Health Care/statistics & numerical data , Primary Prevention/statistics & numerical data , Secondary Prevention/statistics & numerical data
12.
Arch Womens Ment Health ; 20(1): 139-147, 2017 02.
Article in English | MEDLINE | ID: mdl-27796596

ABSTRACT

Body image disturbances are a prominent feature of eating disorders (EDs). Our aim was to test and evaluate a computerized assessment of body image (CABI), to compare the body image disturbances in different ED types, and to assess the factors affecting body image. The body image of 22 individuals undergoing inpatient treatment with restricting anorexia nervosa (AN-R), 22 with binge/purge AN (AN-B/P), 20 with bulimia nervosa (BN), and 41 healthy controls was assessed using the Contour Drawing Rating Scale (CDRS), the CABI, which simulated the participants' self-image in different levels of weight changes, and the Eating Disorder Inventory-2-Body Dissatisfaction (EDI-2-BD) scale. Severity of depression and anxiety was also assessed. Significant differences were found among the three scales assessing body image, although most of their dimensions differentiated between patients with EDs and controls. Our findings support the use of the CABI in the comparison of body image disturbances in patients with EDs vs. CONTROLS: Moreover, the use of different assessment tools allows for a better understanding of the differences in body image disturbances in different ED types.


Subject(s)
Anorexia Nervosa/psychology , Body Image , Bulimia Nervosa/psychology , Computers , Self Concept , Adolescent , Adult , Anxiety/complications , Anxiety/psychology , Case-Control Studies , Depression/complications , Depression/psychology , Female , Humans , Image Processing, Computer-Assisted , Israel , Severity of Illness Index , Surveys and Questionnaires , Young Adult
13.
Int J Psychiatry Clin Pract ; 20(2): 101-5, 2016.
Article in English | MEDLINE | ID: mdl-27052573

ABSTRACT

OBJECTIVE: In this retrospective cross-sectional study, we evaluated the existence of psychiatric symptoms which appeared after implantation of an implantable cardioverter defibrillator (ICD). METHODS: Patients with ICDs were diagnosed using the Mini International Neuropsychiatric Interview (MINI) and were excluded if they had any psychiatric diagnosis prior to ICD implantation. Depression and anxiety were evaluated using the HAM-D and HAM-A rating scales and their attitude towards the ICD using a visual analog scale (VAS). Ninety five ICD patients with mean age of 66 years (±11.5) were recruited, 80 (84%) were men. RESULTS: Four (4%) patients were diagnosed with new-onset MDD and one patient (1%) with anxiety. Twenty seven (28%) were found to have significant depressive symptoms (HAM-D >8), without MDD diagnosis; half of them attributing these symptoms to the device. Seven (8%) patients experienced phantom shocks and had relatively higher depressive scores (HAM-D 10.3 vs. 5.8; F = 3.696; p = 0.058). The MDD rates in our study were rather consistent with those reported for cardiac patients. CONCLUSIONS: We suggest that ICD contributed little, if any, additional depressive or anxiety symptoms after implantation. We found that the overall attitude towards the device was positive and that shocks and phantom shocks were related to depressive symptoms.


Subject(s)
Anxiety/psychology , Defibrillators, Implantable/psychology , Depression/psychology , Health Knowledge, Attitudes, Practice , Adult , Aged , Aged, 80 and over , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Retrospective Studies
14.
Brain Topogr ; 29(4): 552-60, 2016 07.
Article in English | MEDLINE | ID: mdl-27021230

ABSTRACT

Perceptual closure ability is postulated to depend upon rapid transmission of magnocellular information to prefrontal cortex via the dorsal stream. In contrast, illusory contour processing requires only local interactions within primary and ventral stream visual regions, such as lateral occipital complex. Schizophrenia is associated with deficits in perceptual closure versus illusory contours processing that is hypothesized to reflect impaired magnocellular/dorsal stream. Perceptual closure and illusory contours performance was evaluated in separate groups of 12 healthy volunteers during no TMS, and during repetitive 10 Hz rTMS stimulation over dorsal stream or vertex (TMS-vertex). Perceptual closure and illusory contours were performed in 11 schizophrenia patients, no TMS was applied in these patients. TMS effects were evaluated with repeated measures ANOVA across treatments. rTMS significantly increased perceptual closure identification thresholds, with significant difference between TMS-dorsal stream and no TMS. TMS-dorsal stream also significantly reduced perceptual closure but not illusory contours accuracy. Schizophrenia patients showed increased perceptual closure identification thresholds relative to controls in the no TMS condition, but similar to controls in the TMS-dorsal stream condition. Conclusions of this study are that magnocellular/dorsal stream input is critical for perceptual closure but not illusory contours performance, supporting both trickledown theories of normal perceptual closure function, and magnocellular/dorsal stream theories of visual dysfunction in schizophrenia.


Subject(s)
Perceptual Closure , Schizophrenia/physiopathology , Transcranial Magnetic Stimulation , Visual Pathways , Adult , Case-Control Studies , Female , Humans , Male
15.
Aerosp Med Hum Perform ; 87(4): 411-6, 2016 Apr.
Article in English | MEDLINE | ID: mdl-27026126

ABSTRACT

BACKGROUND: Fear of flying (FoF), a common phobia in the developed world, is usually treated with cognitive behavioral therapy, most efficiently when combined with exposure methods, e.g., virtual reality exposure therapy (VRET). We evaluated FoF treatment using VRET in a large motion-based VR system. The treated subjects were seated on a moving platform. The virtual scenery included the interior of an aircraft and a window view to the outside world accompanied by platform movements simulating, e.g., takeoff, landing, and air turbulence. Relevant auditory stimuli were also incorporated. CASE REPORT: Three male patients with FoF underwent a clinical interview followed by three VRETs in the presence and with the guidance of a therapist. Scores on the Flight Anxiety Situation (FAS) and Flight Anxiety Modality (FAM) questionnaires were obtained on the first and fourth visits. Anxiety levels were assessed using the subjective units of distress (SUDs) scale during the exposure. All three subjects expressed satisfaction regarding the procedure and did not skip or avoid any of its stages. Consistent improvement was seen in the SUDs throughout the VRET session and across sessions, while patients' scores on the FAS and FAM showed inconsistent trends. Two patients participated in actual flights in the months following the treatment, bringing 12 and 16 yr of avoidance to an end. DISCUSSION: This VR-based treatment includes critical elements for exposure of flying experience beyond visual and auditory stimuli. The current case reports suggest VRET sessions may have a meaningful impact on anxiety levels, yet additional research seems warranted.


Subject(s)
Air Travel/psychology , Phobic Disorders/therapy , Virtual Reality Exposure Therapy , Adult , Humans , Male , Middle Aged
16.
PLoS One ; 11(1): e0143490, 2016.
Article in English | MEDLINE | ID: mdl-26730716

ABSTRACT

UNLABELLED: Schizophrenic patients have a high rate of smoking and cognitive deficits which may be related to a decreased number or responsiveness of nicotinic receptors in their brains. Varenicline is a partial nicotinic agonist which is effective as an antismoking drug in cigarette smokers, although concerns have been raised about potential psychiatric side-effects. We conducted a double-blind placebo controlled study in 87 schizophrenic smokers to evaluate the effects of varenicline (2 mg/day) on measures of smoking, cognition, psychiatric symptoms, and side-effects in schizophrenic patients who were cigarette smokers. Varenicline significantly decreased cotinine levels (P<0.001), and other objective and subjective measures of smoking (P < .01), and responses on a smoking urges scale (P = .02), more than placebo. Varenicline did not improve scores on a cognitive battery designed to test the effect of drugs on cognitive performance in schizophrenia (the MATRICS battery), either in overall MATRICS battery Composite or individual Domain scores, more than placebo. There were no significant differences between varenicline vs. placebo effects on total symptom scores on psychiatric rating scales, PANSS, SANS, or Calgary Depression scales, and there were no significant drug effects in any of these scales sub-scores when we used Benjamin-Hochberg corrected significance levels (α = .05). Varenicline patients did not show greater side-effects than placebo treated patients at any time point when controlled for baseline side-effect scores. Our study supports the use of varenicline as a safe drug for smoking reduction in schizophrenia but not as a cognitive enhancer. TRIAL REGISTRATION: ClinicalTrials.gov 00802919.


Subject(s)
Cognition/drug effects , Nicotinic Agonists/pharmacology , Schizophrenic Psychology , Smoking/drug therapy , Tobacco Use Cessation Devices , Varenicline/pharmacology , Adult , Antipsychotic Agents/therapeutic use , Cotinine/blood , Depression/etiology , Double-Blind Method , Female , Humans , Male , Middle Aged , Nausea/chemically induced , Nicotinic Agonists/adverse effects , Nicotinic Agonists/therapeutic use , Psychological Tests , Schizophrenia/blood , Schizophrenia/drug therapy , Smoking/blood , Smoking Cessation , Symptom Assessment , Tobacco Use Cessation Devices/adverse effects , Varenicline/adverse effects , Varenicline/therapeutic use
17.
Clin Neurol Neurosurg ; 140: 73-8, 2016 Jan.
Article in English | MEDLINE | ID: mdl-26658034

ABSTRACT

OBJECTIVES: Repetitive transcranial magnetic stimulation (rTMS), using standard coils, provided modest symptomatic benefits in patients with Parkinson's disease (PD). In our previous exploratory studies, using the newly developed Hesed coil (providing deeper rTMS; rDTMS) high frequency (HF), excitatory rDTMS over the primary motor cortex (M1), did not achieve sufficient beneficial effect for PD symptoms, while low frequency (LF) inhibitory stimulation, was mildly beneficial. To further investigate the optimal rDTMS stimulation parameters for PD patients, and to assess whether there is an added value for dual stimulation, consisting of HF rDTMS over the prefrontal cortex (PFC) along with LF M1 rDTMS. The rational for the selection of the current stimulation parameters and sites lies on the previous studies that demonstrated an inhibitory effect of 1Hz rTMS on the increased cortical activity in PD as well as dopamine release by PFC stimulation. PATIENTS AND METHODS: An open comparative active study of one month duration (12 sessions) of LF rDTMS over M1 alone (n=9) or combined with HF PFC rDTMS (M1-PFC, n=10). Outcome measures included the total and motor Unified Parkinson's Disease Rating Scale scores (T-UPDRS and M-UPDRS) and other variables, were collected at baseline and on days 30 and 60. RESULTS: For the M1+PFC group, T-UPDRS score improved from baseline to day 30, by 15% (median: 52 points, decreased to 44, p=0.02, effect size: 0.51) and M-UPDRS score improved by 24% (median: 37 points decreased to 28, p=0.04, effect size: 0.47). The corresponding results for the M1 group were insignificant. Additionally, the between groups comparison, was insignificant. CONCLUSION: rDTMS, consisting of M1 excitation with PFC inhibition improved PD motor symptoms but was not significantly superior to M1 rDTMS alone. rDTMS stimulation protocols for M1 should be further evaluated in larger scale controlled studies.


Subject(s)
Motor Activity/physiology , Motor Cortex/physiopathology , Parkinson Disease/physiopathology , Prefrontal Cortex/physiopathology , Transcranial Magnetic Stimulation , Adult , Aged , Aged, 80 and over , Feasibility Studies , Female , Humans , Male , Middle Aged , Transcranial Magnetic Stimulation/methods
18.
Schizophr Res ; 168(1-2): 260-6, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26190299

ABSTRACT

Schizophrenia is characterized by cognitive deficits which persist after acute symptoms have been treated or resolved. Transcranial direct current stimulation (tDCS) has been reported to improve cognition and reduce smoking craving in healthy subjects but has not been as carefully evaluated in a randomized controlled study for these effects in schizophrenia. We conducted a randomized double-blind, sham-controlled study of the effects of 5 sessions of tDCS (2 milliamps for 20minutes) on cognition, psychiatric symptoms, and smoking and cigarette craving in 37 outpatients with schizophrenia or schizoaffective disorder who were current smokers. Thirty subjects provided evaluable data on the MATRICS Consensus Cognitive Battery (MCCB), with the primary outcome measure, the MCCB Composite score. Active compared to sham tDCS subjects showed significant improvements after the fifth tDCS session in MCCB Composite score (p=0.008) and on the MCCB Working Memory (p=0.002) and Attention-Vigilance (p=0.027) domain scores, with large effect sizes. MCCB Composite and Working Memory domain scores remained significant at Benjamini-Hochberg corrected significance levels (α=0.05). There were no statistically significant effects on secondary outcome measures of psychiatric symptoms (PANSS scores), hallucinations, cigarette craving, or cigarettes smoked. The positive effects of tDCS on cognitive performance suggest a potential efficacious treatment for cognitive deficits in partially recovered chronic schizophrenia outpatients that should be further investigated.


Subject(s)
Cognition , Psychotic Disorders/therapy , Schizophrenia/therapy , Smoking/therapy , Transcranial Direct Current Stimulation , Adult , Craving , Double-Blind Method , Hallucinations/therapy , History, Ancient , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Psychological Tests , Psychotic Disorders/psychology , Schizophrenic Psychology , Smoking/psychology , Transcranial Direct Current Stimulation/adverse effects , Transcranial Direct Current Stimulation/methods , Treatment Outcome
19.
Isr J Psychiatry Relat Sci ; 52(1): 12-5, 2015.
Article in English | MEDLINE | ID: mdl-25841105

ABSTRACT

BACKGROUND: Hypofunction of NMDA receptor-mediated neurotransmission might play a critical role in schizophrenia. Sarcosine, N- methylglycine and inhibitor of the glycine transporter-1 (Gly-T1), has been suggested as a novel treatment for schizophrenia. METHODS: Open label sarcosine was added to 22 stabilized patients: 5 patients received 2 gm/d, and 17 received 4gm/d. Pharmacokinetics samples, clinical and cognitive parameters using PANSS, CGI and MCCB were collected for all patients. RESULTS: Significant improvement was observed after one week of treatment on PANSS sub-scale of 'positive symptoms' (Z= -2.68; P=0.007) and 'general psychopathology' (Z= -3.02; P=0.003), an improvement in PANSS total score and CGI-S showed a trend (Z= -2.72; P=0.06; Z=-2.69; P=0.08). Speed of processing (MCCB subscale) improved significantly (Z=-2.13; P=0.03). Sarcosine exhibited linear kinetics, with a Tmax and t½ of ~1½- 2½ hr and ~1hr, respectively. LIMITATIONS: This was a short period, open label pilot study with small sample size per dosage group. CONCLUSIONS: Sarcosine is a safe compound and might be efficacious in the treatment of schizophrenia.


Subject(s)
Antipsychotic Agents/therapeutic use , Sarcosine/pharmacology , Sarcosine/pharmacokinetics , Schizophrenia/drug therapy , Adult , Drug Therapy, Combination , Female , Humans , Male , Middle Aged , Pilot Projects , Sarcosine/administration & dosage , Sarcosine/adverse effects
20.
Compr Psychiatry ; 54(2): 195-200, 2013 Feb.
Article in English | MEDLINE | ID: mdl-22938821

ABSTRACT

Recapturing meaning in life has been described as an essential element in the process of recovery from severe mental illness (SMI), but limited quantitative research still restricts our understanding of this phenomenon. The purpose of the current study was to explore the meaning in life among people with SMI and variables that may influence it such as internalized stigma and insight into the mental illness. We expected a significant negative correlation between internalized stigma and meaning in life, and that internalized stigma would moderate the relationship between insight and meaning in life. To explore these assumptions, 60 persons with SMI completed questionnaires that assessed their meaning in life, insight into their mental illness and internalized stigma, after which the data were analyzed using correlation and cluster analysis. Both hypotheses were confirmed. The mechanism behind the relationship between self-stigma and meaning in life and the theoretical and clinical implications of the moderation model are discussed.


Subject(s)
Mental Disorders/psychology , Personal Satisfaction , Self Concept , Stereotyping , Adaptation, Psychological , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Social Stigma , Surveys and Questionnaires
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