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Biomedical subjects

E Hollander

Publications and source records attributed to E Hollander.

At least 91 records · Page 5Linked to original sources
PubMed1995

Depersonalization disorder and self-injurious behavior.

Depersonalization is a subjective sense of unreality regarding various aspects of the self, experienced as disconnectedness from one's own body, mentations, feelings, or actions. When episodes of depersonalization are recurrent or persistent and lead to distress or dysfunction, the diagnosis of depersonalization disorder is made. Certain similarities in phenomenology, comorbidity, neurochemistry, and treatment response suggest a relationship to the obsessive-compulsive spectrum. However, depersonalization is a very poorly studied condition, and any conclusions must be viewed tentatively. Self-injurious behaviors are defined as intentionally self-inflicted bodily injuries without lethal intent. Basic categories are briefly described. Subsequently, the phenomenology and biology of both impulsive and compulsive self-injurious behaviors, and their relationship to the obsessive-compulsive spectrum, are discussed.

Adolescent↗
PubMed1995

Body dysmorphic disorder, pathological gambling, and sexual compulsions.

This article focuses on body dysmorphic disorder (BDD), pathological gambling, and sexual compulsions within the realm of obsessive-compulsive spectrum disorders. These three disorders affect sizable numbers of the population, have an early age at onset and chronic courses, and seem to have a preferential response to serotonin reuptake inhibitors (SRIs). They also have a high comorbidity with obsessive-compulsive disorder, depression, and other impulse control disorders. BDD patients lie more toward the compulsive/risk-aversive end of the dimensional model of obsessive-compulsive spectrum disorder and often have poor insight. Pathological gambling patients lie more toward the impulsivity/novelty-seeking end of the OCD spectrum and often have features of inattention. Sexual obsessions and/or compulsions encompass a heterogeneous group of disorders, as exhibited by differential response to SRIs within this group. These three disorders fall within a new and evolving field that requires further investigation and reconceptualization. This concept may have far-reaching consequences and yield more significant treatment outcomes.

Adolescent↗
PubMed1994

Brain event-related potential correlates of overfocused attention in obsessive-compulsive disorder.

A hypothesis of overfocused attention in obsessive-compulsive disorder was investigated by measuring auditory event-related potentials (ERPs) during a selective attention task. Unmedicated patients (n = 18) with this disorder showed significantly larger attention-related processing negativity (PN), with earlier onset and longer duration, than did normal controls (n = 15). In the N200 region (160-250 ms), PN was larger in patients with fewer nonspecific neurological soft signs. This task, however, did not yield any group differences in mismatch negativity (N2a) or classical N200 (N2b). P300 amplitudes for attended targets were smaller for patient than normal groups, but the reverse was true for P300 and positive slow wave amplitudes for unattended nontargets. Collectively, these ERP abnormalities suggest a misallocation of cognitive resources. Because of the importance of the frontal lobe in the control of selective attention, PN enhancement in patients with obsessive-compulsive disorder may reflect hyperactivation of this region. This conceptualization is consistent with recent functional neuroimaging findings.

Adult↗
PubMed1994

Low platelet monoamine oxidase activity in pathological gambling.

Decreased platelet monoamine oxidase (MAO) activity has been reported in association with sensation-seeking personality type and in some mental disorders associated with a lack of impulse control. Pathological gambling itself has been related with both sensation-seeking and reduced impulse control. Platelet MAO activity was investigated in 15 DSM-III-R pathological gamblers from our outpatient clinic. Gamblers had a significantly lower platelet MAO activity than a group of 25 healthy controls. The range of MAO levels in gamblers was also significantly shorter than in controls. In controls, platelet MAO levels showed the previously described negative correlations with sensation-seeking scores but not in gamblers. The findings are consistent with previous studies showing an association of low platelet MAO activity with impulse control disorders and raise some interesting therapeutic alternatives for pathological gambling.

Adult↗
PubMed1994

Serotonergic sensitivity in borderline personality disorder: preliminary findings.

Twelve patients with borderline personality disorder and 15 healthy comparison subjects were challenged with single doses of oral m-chlorophenylpiperazine (m-CPP) and placebo. Following m-CPP, the patients experienced decreased anger and fear. Seven of the 12 patients reported a "spacy," "high," depersonalized/derealized experience following m-CPP, which was confirmed by clinicians' ratings. Compared with the normal male subjects, the male patients with borderline personality disorder had higher cortisol levels and marginally blunted prolactin responses after receiving m-CPP. These results suggest serotonergic dysfunction in borderline personality disorder.

Administration, Oral↗
PubMed1994

A survey of the phenomenology and pharmacotherapy of compulsive and impulsive-aggressive symptoms in Prader-Willi syndrome.

Prader-Willi Syndrome (PWS) is a congenital disorder characterized by hyperphagia as well as by other behavioral disturbances such as self-mutilation and temper outbursts. Some of these symptoms have been reported to respond to psychotropic medications. A systematic survey was conducted to gather information on the phenomenology and pharmacotherapy of compulsive and impulsive-aggressive symptoms in PWS. Both compulsive and impulsive-aggressive symptoms are frequent in this population. Pharmacotherapeutic intervention may have a role in the management of these symptoms. Rigorous diagnostic and treatment studies should be undertaken in this population.

Adolescent↗
PubMed1994

Neurological soft signs in female trichotillomania patients, obsessive-compulsive disorder patients, and healthy control subjects.

Female trichotillomania patients, obsessive-compulsive disorder patients, and normal control subjects did not differ in total scores on a neurological soft signs battery. Further studies should determine whether the increased neurological soft signs present in obsessive-compulsive disorder and perhaps in obsessive-compulsive spectrum disorders are associated with male gender only.

Adult↗
PubMed1994

Neuropsychiatric and neuropsychological findings in conduct disorder and attention-deficit hyperactivity disorder.

Neuropsychiatric and neuropsychological evaluations were performed in a pilot study of adolescents with DSM-III-R disruptive behavior disorders, including conduct disorder (CD) and attention-deficit hyperactivity disorder (ADHD). The following comparisons were made: 1) CD comorbid with ADHD vs. CD only; 2) all subjects with ADHD vs. all non-ADHD; and 3) all subjects with CD vs. all non-CD. The CD + ADHD group had increased left-sided soft signs compared with the CD group. CD + ADHD subjects significantly underperformed CD subjects on several executive functioning measures, with no differences on Verbal IQ subtests. Results are discrepant with previous findings of deficient verbal functioning in delinquent populations. However, findings may not be generalizable because of sampling limitations.

Adolescent↗
PubMed1994

The assessment and treatment of refractory anxiety.

Most patients with anxiety disorders can be effectively treated with the use of specific pharmacologic and psychological approaches. Nevertheless, some anxiety patients remain refractory to standard treatments. For these patients, reappraisal and a systematic approach can be helpful. A common problem in patients with "treatment-resistant" anxiety is the use of inadequate doses or inadequate duration of medication treatment. Alternatively, the diagnosis may need to be reconsidered, and comorbid diagnoses carefully assessed. Comorbid psychiatric, medical, and neurologic conditions may complicate the treatment of anxiety or require additional specific treatments. Finally, alternative pharmacologic approaches for specific types of anxiety can yield successful outcomes.

Anti-Anxiety Agents↗
PubMed1994

Serotonin reuptake blockers for the treatment of obsessional jealousy.

BACKGROUND: Some patients with pathological jealousy have a predominant obsessional component to their jealous thoughts. Since obsessions and compulsions often respond to serotonin reuptake blockers, these agents may also be useful for obsessional jealousy. METHOD: We undertook a retrospective study of patients who presented with obsessional jealousy. Six patients were treated in open clinical practice with serotonin reuptake blockers. RESULTS: Four of the six patients responded to medication. This response was as robust as that seen in patients with classical symptoms of obsessive compulsive disorder. CONCLUSION: Obsessional jealousy has phenomenological similarities to other obsessions and compulsions, and obsessional jealousy may also respond to standard antiobsessional medications.

1-Naphthylamine↗
PubMed1993

Timing of neuroendocrine responses and effect of m-CPP and fenfluramine plasma levels in OCD.

The present study assesses the timing of and relationship between neuroendocrine response and metabolite blood levels following the partial serotonin (5-HT) agonist m-CPP and the 5-HT releaser/reuptake blocker fenfluramine. Cortisol levels peaked significantly earlier than did prolactin, m-CPP, fenfluramine, or norfenfluramine blood levels by time-to-peak analysis. This earlier cortisol response to both 5-HT agents raises the possibility that peripheral mechanisms may play a role in cortisol release. Since peak m-CPP level correlated even more closely to peak prolactin rise than did peak fenfluramine, this suggests that prolactin response to oral m-CPP challenge is useful in assessing 5-HT function.

Adult↗
PubMed1993

Neuropsychiatric impairment in impulsive personality disorders.

It has been suggested that impulsivity and aggression are associated with neuropsychiatric impairment. Neurological soft signs may be a useful marker of nonspecific brain damage, and may therefore be increased in impulsive and aggressive patients compared with normal control subjects. A structured examination was used to evaluate neurological soft signs in 28 patients with personality disorders characterized by impulsivity and 28 healthy control subjects. All of the patients met DSM-III-R criteria for borderline personality disorder, and 10 also met criteria for antisocial personality disorder. All patients were questioned about past history of physical aggression, and a subset of 18 patients underwent neuropsychological testing with a select battery. Left-sided neurological soft signs were significantly increased in patients compared with normal control subjects. Patients with a history of aggression, however, had significantly more right-sided neurological soft signs than those without a history of aggression. Increased neurological soft signs were associated with impairment on the Wisconsin Card Sort, a test of frontal lobe executive function. Specific neuropsychiatric abnormalities, such as lateralized neurological soft signs and associated impairment on select neuropsychological tests, may be present in patients with personality disorders characterized by impulsivity.

Adult↗
PubMed1993

Event-related potential and clinical correlates of neurodysfunction in obsessive-compulsive disorder.

The current study confirmed with increased sample sizes our preliminary findings of event-related potential (ERP) abnormalities in obsessive-compulsive disorder (OCD) (Towey et al., 1990) and examined their relationship to symptom severity, treatment response, and neurological soft signs. Unmedicated patients (n = 17) showed larger negativities in N200 and slow wave regions than normal control subjects (n = 16) to correctly detected auditory "oddball" stimuli. N200 amplitude was larger over left than right hemispheres of OCD patients, but not normal control subjects. Greater N200 amplitude correlated with less severe obsessions, better response to subsequent treatment with serotonin reuptake blockers, and fewer neurological soft signs in OCD. With increased task difficulty, N200 and P300 latencies lengthened for normal subjects, but not for OCD patients. The abnormal ERP pattern in OCD supports hypotheses of cortical hyperarousal and overfocused attention.

Adult↗