Pathological Gambling Patients Research Articles

Cognitive dysfunctions and pathological gambling in patients with Parkinson's disease

The purpose of this study was to investigate the neuropsychological correlates of pathological gambling (PG) in Parkinson's disease (PD). Fifteen patients with PD affected by PG (identified based on DSM-IV criteria; PD+PG) without clinically evident dementia were compared with 15 nondemented patients with PD not affected by PG (PD-PG). Two groups of patients with PD were matched for age, length of education, and gender. Clinical and neuropsychiatric features were assessed; several cognitive domains, mainly related to executive functions, were explored by means of standardized neuropsychological tasks. PD+PG and PD-PG did not differ on clinical and neuropsychiatric aspects. PD+PG patients performed significantly worse than PD-PG patients on cognitive tasks that evaluated visuo-spatial long-term memory and several frontal lobe functions. After Bonferroni correction, differences remained significant on the Frontal Assessment Battery (FAB) (P = 0.001), on phonological fluency task (P = 0.003), and on the Trail Making Test, part B minus part A (P = 0.002). Logistic regression analysis demonstrated that low scores on the FAB were the only independent predictor of PG (odds ratio, 27.9; 95% CI: 2.82-277.95, P = 0.004). The results indicate an association between PG and frontal lobe dysfunctions in nondemented patients with PD. Low scores on the FAB indicate patients with PD at high risk for PG.

Parallel Roles for Dopamine in Pathological Gambling and Psychostimulant Addiction

A variety of evidence suggests important commonalities in the neurochemical basis of reinforcement in pathological gambling (PG) and psychostimulant addiction. This article focuses on the parallel and specific roles that dopamine (DA) activation plays in these two disorders, beyond its generic role in reinforcement. A psychostimulant-mimetic model for PG is proposed based on evidence from the following domains: Acute subjective-behavioral effects of gambling and psychostimulants; Effects of anticipated rewards and uncertainty of reward delivery (key elements of gambling) on DA release; Relationship between DA release and positive arousal; Cross-priming of motivation for gambling by amphetamine; Effects of DA D2 antagonists on gambling and amphetamine reward; Effects of mixed D1-D2 antagonists on clinical symptoms of PG; Effects of DA D2 agonists on experimental measures of risk-taking, gambling, and induction of PG in patients with Parkinson's disease; Electrophysiological and cognitive disturbances associated with chronic exposure to gambling and psychostimulants, and the possible role of sensitization in these effects. Limitations of the model regarding the exclusive role of DA are discussed with particular reference to genetic risk, co-morbidity, and sub-types of PG. Suggestions for future research include isolating the roles of DA receptor subtypes in PG, and parallel within-subject assessment of DA manipulations on gambling and psychostimulant reinforcement in PG subjects and controls.

P03-34 Anger expression in obsessive-compulsive spectrum disorders (SOGS): Common and differential traits

Objective:The objective of this study was to examine the experience and expression of anger in eating disorders (EDs) including bulimia nervosa purging (BN-P) and anorexia nervosa restrictive (AN-R) subtypes, impulsive disorders such as pathological gambling (PG), obsessive-compulsive disorder (OCD) and a non psychiatric healthy control group.Method:The sample comprised 80 female SODs individuals (20 BN-P, 21 AN-R, 19 PG, 21 TOC) consecutively admitted to our Department and 21 healthy controls. Patients were diagnosed according to DSM-IV-R criteria. We administered the State-Trait Anger Expression Inventory-2 (STAXI-2). in the control group, the GHQ-28 was also employed.Results:Compared to the healthy control group, elevated Trait Anger scores were revealed for the BN-P (p< .011) and OCD (p< .003) groups. in addition, the OCD group scored higher on this scale than the PG patients (p< .039). as regards to State Anger, higher scores were uncovered for the OCD patients than for the control group (p< .017). Finally, when Anger Expression was assessed, higher scores were found for the OCD (p< .001) and BN (p< .001) individuals when compared to healthy controls. in addition, compared to AN-R, the BN-P and OCD exhibited higher scores on this scale (p< .001 and p< .037, respectively).Conclusions:Our results indicate that, OCD and BN-P patients may have inadequate anger expressions and deficits in coping with anger and frustration when compared to a healthy control group. Conversely, no significant differences were revealed between AN-R, PG and controls. Finally, some differences across diagnoses were also obtained.

Prevalence of Problem and Pathological Gambling in Parkinson’s Disease

Pathological gambling (PG) has been identified in patients with Parkinson's disease (PD) treated with dopamine agonists suggesting that dysregulation of brain dopaminergic activity may contribute to the development of gambling problems. The current study was undertaken to further establish the prevalence of problem and PG in patients with PD, identify any clinical correlates, and determine if psychiatric or substance use co-morbidity contributes to the increased prevalence of problem and PG. A cross-sectional survey of 140 serially recruited moderate to severe PD patients was undertaken utilizing the Canadian Problem Gambling Index, Alcohol Use Disorders Identification Test, Drug Abuse Screening Test, Beck Depression Inventory, Beck Anxiety Inventory, and Mini-Mental State Exam augmented by chart review, completed over an 8 month period. The 12 month prevalence of problem and PG in PD was 9.3% compared to 1.6% in the general population within a comparably aged sample. The increased prevalence of problem and PG in the PD group was related to dopamine agonist use and younger age, but not co-morbidity. Most subjects with problem and PG reported their gambling increased after being diagnosed with PD and starting treatment. The results suggest that brain dopaminergic activity is involved in the underlying neurobiology of problem and PG.

Decreased Density of the Platelet Serotonin Transporter in Pathological Gamblers

Background/Aims: The aim of this study was to investigate the serotonin transporter (SERT), by means of the ³H-paroxetine ([³H]-Par) binding to platelet membranes, in patients affected by pathological gambling (PG), as compared with a similar group of healthy control subjects. Methods: Seventeen PG patients were selected amongst those who were drug-free and at the first psychiatric interview in a Department of Addiction. The diagnosis was assessed according to DSM-IV criteria and PG severity was measured by means of the South Oaks Gambling Screen. The platelet [³H]-Par binding was carried out according to a standardized method. The binding parameters, the maximum binding capacity (B_max) and the dissociation constant (K_d), were obtained by means of the Scatchard analysis. Results: The B_max values of PG patients were significantly lower than that of healthy subjects, while the K_d values were not different in the two groups. No significant effect of age, sex or psychiatric comorbidity on B_max or K_d was observed; there were also no correlations between clinical and biological variables. Conclusions: PG patients showed a dysfunction at the level of the platelet SERT that would suggest the involvement of the 5-HT system in this condition.

Impulse Control Disorders and Pathological Gambling in Patients With Parkinson Disease

The primary aim of this article is to critically review the clinical features and comorbidities, epidemiology, pathophysiology, and treatment of impulse control disorder (ICD) associated with Parkinson disease (PD). References for this review were identified by searches of PubMed from 1980 until January 2008 with the terms "Parkinson disease," "impulse control," "pathologic gambling,""hypersexuality," "levodopa," and "dopamine agonists." Articles were also identified through searches of the authors' own files. Only papers published in English were reviewed. Pathologic gambling has emerged as one of the most prominent ICDs, although hypersexuality, compulsive shopping and other manifestations of obsessive-compulsive disorder may also dominate PD-related behavioral manifestations. Affected patients may demonstrate a pattern of self-escalation of dopaminergic medication dosing which may lead to a state of dependency. Patients most commonly affected by ICD, such as pathologic gambling and hypersexuality, are males who develop PD at a younger age, and those with a previous history of mood disorder, alcohol abuse, or obsessive-compulsive disorder. Dopaminergic drugs, particularly dopamine agonists, play an important role in triggering these nonmotor symptoms.

Executive function abnormalities in pathological gamblers

BackgroundPathological gambling (PG) is an impulse control disorder characterized by persistent and maladaptive gambling behaviors with disruptive consequences for familial, occupational and social functions. The pathophysiology of PG is still unclear, but it is hypothesized that it might include environmental factors coupled with a genetic vulnerability and dysfunctions of different neurotransmitters and selected brain areas. Our study aimed to evaluate a group of patients suffering from PG by means of some neuropsychological tests in order to explore the brain areas related to the disorder.MethodsTwenty outpatients (15 men, 5 women), with a diagnosis of PG according to DSM-IV criteria, were included in the study and evaluated with a battery of neuropsychological tests: the Wisconsin Card Sorting Test (WCST), the Wechsler Memory Scale revised (WMS-R) and the Verbal Associative Fluency Test (FAS). The results obtained in the patients were compared with normative values of matched healthy control subjects.ResultsThe PG patients showed alterations at the WCST only, in particular they had a great difficulty in finding alternative methods of problem-solving and showed a decrease, rather than an increase, in efficiency, as they progressed through the consecutive phases of the test. The mean scores of the other tests were within the normal range.ConclusionOur findings showed that patients affected by PG, in spite of normal intellectual, linguistic and visual-spatial abilities, had abnormalities emerging from the WCST, in particular they could not learn from their mistakes and look for alternative solutions. Our results would seem to confirm an altered functioning of the prefrontal areas which might provoke a sort of cognitive "rigidity" that might predispose to the development of impulsive and/or compulsive behaviors, such as those typical of PG.

Cognitive–behavioral group treatment for pathological gambling: analysis of effectiveness and predictors of therapy outcome

The authors sought to examine short- and mid-term effectiveness of a group cognitive–behavioral therapy (CBT) in pathological gambling (PG) and to analyze predictors of therapy outcome. Two hundred ninety PG patients participated in the current study, all diagnosed on the basis of Diagnostic and Statistical Manual of Mental Disorders (4th edition) criteria, and were given manualized outpatient group CBT (16 weekly sessions). Specific assessment before and after the therapy and at 1, 3, and 6months follow-up was conducted. Logistic regression and survival analyses were applied. Outpatient group CBT was found to be effective, with abstinence rates of 76.1% by the end of therapy and 81.5% at 6months follow-up. The dropout rate during treatment decreased significantly after the fifth treatment session. Psychopathological distress (p=.040) and obsessive–compulsive symptoms were identified as factors predicting relapse and dropout, respectively. These findings suggest that group CBT is effective for treating pathological gamblers. Several psychopathological and personality traits were identified as outcome predictors.

Decision-making and neuroendocrine responses in pathological gamblers

Recent neuropsychological research indicates that patients with pathological gambling (PG) exhibit deficits in laboratory tasks of decision-making which are suggested to be associated with neurochemical alterations within the prefrontal cortex. Some studies also revealed that hypothalamic–pituitary–adrenal axis activity in gamblers is altered. To date, very little is known about the relationship between decision-making and neuroendocrine parameters. Therefore, we examined patients with PG ( n = 22) and healthy comparison subjects ( n = 19) with a laboratory task of decision-making (Game of Dice Task) and sampled salivary cortisol and alpha-amylase (sAA) concentrations before and in the course of task performance. Results showed that the PG patients’ neuroendocrine responses were comparable to those of the healthy subjects, even though the patients had severe decision-making deficits. Within both groups, there were no changes in cortisol and sAA responses. However, correlations and a subgroup analysis for sAA revealed that only those patients who showed less disadvantageous decision-making patterns had an increase of sAA during the task. Accordingly, the increase of sAA – as an indirect marker of sympathetic nervous system activity – in those patients with less severe decision-making deficits could reflect the use of somatic markers biasing the decision-making process.

Pathological Gambling and the Psychiatric Emergency Service

Pathological gambling (PG) has been associated with several negative mental health outcomes. We attempted to assess the impact of PG at the level of the psychiatric emergency service (PES). In a first trial, clinical and demographic data were acquired from patients visiting the PES of a major university teaching hospital in downtown Montreal from July 1, 1996, to December 31, 2000. In a second trial, data were simultaneously acquired for a 2-year period in the above PES and in 3 others, beginning in September 2002. In the first trial, from 2000 onward, the number of visits by PG patients to the PES increased by over 50%. In the second trial, the high level of PES use observed from 2000 onward in the first trial was similarly observed at all 4 PESs. The clinical and demographic characteristics of these patients were typical of help-seeking PG patients. They were, however, significantly less likely to be frequent users of the PES or to be hospitalized. Although still manageable, the clinical impact of PG on the PES increased significantly during the course of this study.

Pathological Gamblers Demonstrate Frontal Lobe Impairment Consistent With That of Methamphetamine-Dependent Individuals

Using tests that are frequently administered by neuropsychologists, the authors investigated whether pathological gambling is associated with frontal lobe abnormalities. The sample comprised 10 pathological gamblers, 25 methamphetamine-dependent subjects, and 19 matched comparison subjects. The pathological gamblers and methamphetamine-dependent subjects performed significantly less well than comparison subjects, and the gamblers' test scores were comparable to those of the methamphetamine-dependent participants. The overall magnitude of the effect size was large. These findings demonstrate that the severity of frontal lobe dysfunction in pathological gambling is similar to that observed in methamphetamine-dependent individuals on frequently used clinical measures.

Pathological gambling in Parkinson's disease: Risk factors and differences from dopamine dysregulation. An analysis of published case series

Pathological gambling (PG) has been reported as a complication of the treatment of Parkinson's disease (PD). We examined all published cases of PG for prevalence and risk factors of this complication, the relationship of PG and use of dopamine agonists (DA), and the relationship of PG to the dopamine dysregulation syndrome (DDS). The prevalence of PG in prospective studies of PD patients using DA has been reported between 2.3 and 8%, compared to approximately 1% in the general population. As in the general population, PD patients with this complication are often young, male and have psychiatric co-morbidity. The vast majority are on DA, often at maximum dose or above. Differences between oral DA failed to reach significance. PG associated with levodopa monotherapy is uncommon, but in the majority of cases levodopa is co-prescribed, suggesting possible cross-sensitization of brain systems mediating reward. PG can occur with DDS but often occurs in isolation. In contrast to DDS, escalation and self regulation of anti-parkinsonian medication are not usually seen. PG in patients with PD using DA is higher than PG reported in the general population, but shares similar characteristics and risk factors. PG is predominantly associated with oral DA. It often occurs in isolation and may not be associated with DDS, which typically occurs on treatment with levodopa or subcutaneous apomorphine.

Pathological gambling - Case series

Background: Limited data are available about the validity of the diagnosis of pathological gambling (PG) and about the etiology and the efficacy of different treatment strategies of this disorder; however, similarities in decision-making behavior between PG patients and patients with ventromedial prefrontal cortex lesions suggest a possible implication of these areas in the pathophysiology of this disorder, as in obsessive-compulsive disorder, in which the decision-making impairment is significantly associated with response to serotonin reuptake inhibitor treatment. Nevertheless, several studies have shown that decision-making functioning is also impaired in drug-addicted patients who have shown abnormalities in ventromedial prefrontal cortex during functional neuroimaging studies.Methods: We assessed the decision-making function mediated by the ventromedial prefrontal cortex in 20 PG patients and 40 healthy control (HC) subjects using the Gambling Task, which simulates real-life decision-making, testing the ability to balance immediate rewards against long-term negative consequence.Results: Significant differences were found in Gambling Task performance between HC subjects and PG patients, who showed a specific decision-making profile across the sequence of the game. The dissimilarity does not appear to depend on the basic cognitive function deficit of the PG group.Conclusions: These data seem to suggest the existence of a link between PG and other disorders (i.e., obsessive-compulsive disorder and drug addiction) all having diminished ability to evaluate future consequences, which may be explained at least in part by an abnormal functioning of the orbitofrontal cortex.

Serotonin Dysfunction in Pathological Gamblers: Increased Prolactin Response to Oral m-CPP Versus Placebo

Acute administration of the partial serotonin (5-HT) agonist meta-chlorophenylpiperazine (m-CPP), that is used also as a street drug, has been reported to induce a "high" and craving response in various impulsive and substance addiction disorders. To clarify altered 5-HT metabolism in pathological gamblers and to explore the specific role of serotonergic system in non-substance addictions, we assessed behavioral ("high" and "craving") and neuroendocrine (prolactin and cortisol) responses to an oral single dose of m-CPP and placebo in pathological gamblers and matched controls. Moreover, the relationship between neuroendocrine outcome and clinical severity has been assessed. Twenty-six pathological gamblers and 26 healthy control subjects enter a double-blind, placebo-controlled-crossed administration of orally dose m-CPP 0.5 mg/kg. Outcome measures included prolactin and cortisol levels, gambling severity, mood, craving and "high" scales. Pathological gamblers had significantly increased prolactin response compared to controls at 180 minutes and at 210 minutes post-administration. Greater pathological gamblers severity correlated with increased neuroendocrine responsiveness to m-CCP, suggesting greater 5-HT dysregulation. Pathological gambling patients had a significantly increased "high" sensation after m-CPP administration compared with control. These results provide additional evidence for 5-HT disturbance in pathological gamblers and they support the hypotheses that the role of the 5-HT dysfunction related to the experience of "high" might represent the pathway that leads to dyscontrolled behavior in pathological gamblers. Furthermore, the "high" feeling induced by m-CPP in pathological subjects may represent a marker of vulnerability to both behavioral and substance addictions.

Pharmacotherapy of pathological gambling: review of new treatment modalities

Pathological gambling is classified in the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition as an impulse-control disorder. In the International Classification of Diseases of the WHO, pathological gambling is coded under the heading of ‘Habit and Impulse Disorders’. Pathological gambling is a chronic, progressive disorder, which has a prevalence of 1–3.4% among western civilizations. The enormous personal and social consequences of this disorder include a high rate of suicide attempts, job loss, marital and family problems, legal problems, and criminal behavior. Recent studies have demonstrated that pathological gambling patients respond well to treatment with selective serotonin reuptake inhibitors, mood stabilizers and opioid antagonists. These findings support the idea that pathological gambling and other disorders of impulse control may be conceptualized as part of the obsessive–compulsive spectrum disorders or addictive disorders. This article will discuss possible treatment strategies according to different behavior patterns in pathological gambling and also remind the physicians who intend to treat this disorder of the possible diagnosis of pathological gambling.

Dual Psychiatric Diagnosis and Substance Abuse in Pathological Gamblers

Background: Pathological Gambling (PG) is a highly prevalent and disabling impulse control disorder. Recent studies have consistently shown that PG patients have responded well to treatment with SSRIs, mood stabilizers, and opioid antagonists. These findings have supported the observation that PG is strongly associated with both mood and anxiety disorders as well as substance abuse. The aim of the study is to evaluate the comorbid psychiatric diagnoses in our sample of pathological gamblers. Methods: Thirty-six female, and forty-two male PGs were enrolled in our study. A comprehensive psychiatric diagnostic evaluation was performed on all patients, and patients were screened for symptoms of depression and anxiety using the Hamilton Depression Rating Scale, the Hamilton Anxiety Rating Scale, the Yale-Brown Obsessive Compulsive Scale, and the Frost Multidimensional Perfectionism Scale. In addition, the patients completed self-report questionnaires about their demographic status and substance abuse. Results: The majority of patients were married with full or part-time employment. The study results demonstrated that PG in males is correlated with substance and alcohol abuse. Diagnoses which were prevalent among our cohort of female PGs included major depression, affective disorders, anxiety disorders, and eating disorders. Conclusion: In our sample of PGs, the men and women had different patterns of psychiatric comorbidity. The different patterns of psychiatric comorbidity seen in our male versus female PGs raises the question of whether the underlying etiopathology in PG may differ according to gender.

Prevalence of pathological gambling in patients with Parkinson's disease

Pathological gambling (PG) is a psychiatric disorder characterized by loss of control of gambling, which has repercussions on family, personal, and professional life. Several recent studies have reported the relationship between PG and the treatment of Parkinson's disease (PD), but no prevalence study has yet been conducted to investigate this correlation. The purpose of this study was to evaluate the prevalence of PG in Italian patients with PD on dopamine replacement therapy. The prevalence of PG in a PD sample (n = 98) and in an age- and sex-matched control group (n = 392) was obtained. The prevalence of PG results significantly higher (P = 0.00001) in PD patients than in control subjects (6.1% vs. 0.25%). Our results emphasize that PG in patients with idiopathic PD on dopamine replacement therapy is an emergent comorbidity, but probably at present the condition is not properly diagnosed because it is mostly unknown.

Freqüência de jogo patológico entre farmacodependentes em tratamento

To investigate the frequency of pathological gambling among alcohol and other substance abusers who sought specialized treatment. Seventy-four outpatients from three different substance abuse treatment services were interviewed. The South Oaks Gambling Screen (SOGS) scale was used for the diagnosis of pathological gambling. The diagnosis of alcohol and other substances abuse was established according to the DSM-IV criteria and the Short Alcohol Dependence Data (SADD) scale. The Portuguese version of the Self-Report Questionnaire (SRQ) scale was used to detect psychiatric symptoms and the Center for Epidemiological Studies Depression Scale (CES-D) for depressive symptoms. Average scores obtained from the application of these scales were compared using the Student t-test. All subjects met the criteria for drug abuse, 61.6% met the alcohol dependence criteria, 60.3% for cocaine/crack, and 34.2% for cannabis. According to the SOGS scale, the majority of drug addicts (70.3%) were classified as social gamblers, 10.8% as problem gamblers and 18.9% as pathological gamblers. Psychiatric and depression symptoms were found in the sample. Pathological gambling patients showed more depression symptoms than non-pathological gambling patients. A high frequency of pathological gambling was found among the drug addicts interviewed. It is emphasized the importance of investigating pathological gambling among patients under treatment of drug abuse and to include strategies for the treatment of this disorder.

Decision-making impairments in patients with pathological gambling

Pathological gambling (PG) is most likely associated with functional brain changes as well as neuropsychological and personality alterations. Recent research with the Iowa Gambling Task suggests decision-making impairments in PG. These deficits are usually attributed to disturbances in feedback processing and associated functional alterations of the orbitofrontal cortex. However, previous studies with other clinical populations found relations between executive (dorsolateral prefrontal) functions and decision-making using a task with explicit rules for gains and losses, the Game of Dice Task. In the present study, we assessed 25 male PG patients and 25 male healthy controls with the Game of Dice Task. PG patients showed pronounced deficits in the Game of Dice Task, and the frequency of risky decisions was correlated with executive functions and feedback processing. Therefore, risky decisions of PG patients might be influenced by both dorsolateral prefrontal and orbitofrontal cortex dysfunctions.

Does Sustained-Release Lithium Reduce Impulsive Gambling and Affective Instability Versus Placebo in Pathological Gamblers With Bipolar Spectrum Disorders?

Selective serotonin reuptake inhibitors may be effective for some patients with pathological gambling, but those with comorbid conditions, such as bipolar spectrum disorders, may relapse during treatment. To the authors' knowledge, this is the first placebo-controlled treatment study in pathological gamblers with bipolar spectrum disorders; it compares sustained-release lithium carbonate to placebo. Forty pathological gambling patients with bipolar spectrum disorders entered a 10-week randomized, double-blind, placebo-controlled treatment study of sustained-release lithium carbonate. Outcome measures included gambling severity, mood, anxiety, and impulsivity scales. Pathological gambling patients with bipolar spectrum disorders significantly improved while taking sustained-release lithium carbonate compared to placebo on total pathological gambling scores on the Yale-Brown Obsessive Compulsive Scale, including both thoughts/urges and behavior, as well as on the Clinical Global Impression severity of pathological gambling scale. Affective instability (the Clinician-Administered Rating Scale for Mania score) was also lower in the group treated with sustained-release lithium carbonate compared to placebo. Ten (83%) of 12 completers were rated as responders in the sustained-release lithium group versus five (29%) of 17 in the placebo group. Of note, improvement in gambling severity was significantly correlated with improvement in mania ratings. Sustained-released lithium may be an effective treatment in reducing both gambling behavior and affective instability in pathological gamblers with bipolar spectrum disorder. This study highlights the need to identify subgroups of pathological gambling patients with bipolar spectrum conditions because this may have important treatment implications.