Nocturnal plasma melatonin levels in schizophrenic patients.
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Biomedical subjects
F Fanget
Publications and source records attributed to F Fanget.
[Occurrence of tardive dyskinesia during neuroleptic treatment].
The incidence of tardive dyskinesia under neuroleptic treatment is diversely estimated. The effectiveness of anticholinergics in its prevention is under discussion. Among 52 patients treated with neuroleptics for more than 5 years (mean: 9 years) only 2 developed tardive dyskinesia, and the disorder was transient in each case. The low doses of neuroleptic drugs administered and their systematic association with anticholinergics seem to be partly responsible for this low incidence of tardive dyskinesia.
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[Clinical and therapeutic characteristics of social phobia in French psychiatry (Phoenix study)].
Only few clinical epidemiologic studies have been conducted on social phobia in France to date. It is however a frequent disorder, with often severe alteration of social adaptation and quality of life, and for which effective treatments exist. Thus, it seems really important to further explore how these patients are nowadays identified and treated in psychiatry. It was the objective of the Phoenix study. In this observational multi-center study, 952 psychiatric in- or out-patients, with a primary diagnosis of social phobia according to DSM IV criteria, were included. Numerous diagnostic and psychometric evaluations were carried out, in order to evaluate the comorbidity (Mini International Neuropsychiatric Interview, Hospital Anxiety and Depression Scale), the intensity of social anxiety (Liebowitz Social Anxiety Scale), and various aspects of the functional and emotional impact (Various Impact of Social Anxiety scale, Sheehan Disability Scale, SF-36, Positive and Negative Emotionality scale). The patients were in majority females (57.6%), with a mean age 37.5 years, and with a mean duration of social anxiety disorder 12.5 years. The mean scores of social anxiety on Liebowitz scale was 40.3 +/- 12.6 for the fear factor, and 38.3 +/- 13.6 for the avoidance factor. The generalized social anxiety subtype (anxiety in most social situations) was present in 67.8% of the patients. A major depressive disorder was found in 47.7% of the sample, and the prevalence of agoraphobia was even higher (49.2%). As known in clinical practice and in other studies, the prevalence rates of current alcohol dependence and substances abuse were also important in this population (respectively 10.6% and 12.7%). Mean scores of the Hospital Anxiety and Depression (HAD) sub-scales were 13.9 +/-3.8 for anxiety and 9.1 +/-4.5 for depression. About 15% of the patients had a history of suicide attempt, and a suicidal risk was present in nearly 40% of the sample. The psychosocial impact and the alteration of quality of life (with especially a poor physical health perception) were very significant, in the family, educational or occupational and social domains. Mean scores of the Sheehan Disability Scale were 6.1 +/- 2.6 for professional impairment, 5.0 +/- 2.7 for familial impairment, and 6.6 +/- 2.3 for social life impairment. In addition to the disability due to social phobia intensity, an important part of the burden was due to depressive symptoms. Approximately 60% of the patients had already a psychiatric treatment at the time of the survey (since 1,7 years in average), but only 17% had a cognitive behavioral therapy (CBT), and 48% had an antidepressant treatment. These proportions increased in a significant way after the consultation during which the investigation was carried out: an antidepressant was prescribed to 72% of the patients, and a CBT is proposed to 48%. On the whole, this study confirmed the severity and the morbidity of social phobia in a very large sample of French psychiatric patients. The depressive disorders, suicidal risk, and social impairment associated with this condition should incite to more detect and treat it. Seeing the long duration of the disease in our sample, and the lack of specific therapies in many cases, the identification and the treatment of social phobia must be improved, and the role of the psychiatrists in this process seems very important.
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[The treatment of social phobias: efficacy of cognitive and and behavioral group therapy].
55 patients with social phobias were given group cognitive-behavioural therapy. The study protocol comprised three phases: (1) the pre-inclusion phase with 5 individual consultations before group treatment; (2) the group phase itself, comprising 20 weekly sessions of 2 hours each and (3) the post-therapy phase, comprising a 6 month follow-up group session, and 2 evaluation sessions 6 and 12 months after the end of group therapy. The techniques used were assertiveness training and cognitive therapy. Assessments were carried out using the Rathus Assertiveness Schedule (23), Brief standard self rating for phobic patients (Marks) (19) and Beck Depression Inventory Scores (1), at specified times during the study: at the start of the individual phase; at the start, in the middle and at the end of the group phase, as well as at 6 month and 1 year follow-up. The results are interesting. Follow-up was very good, with 54 out of 55 patients finishing the group treatment, and with 50 patients being evaluated at 6 and 12 months. Global analysis of the results showed that at the end of group therapy, there was a statistically significant improvement in the score on the Rathus Assertiveness Schedule, on the social sub-score, on the brief standard self rating for phobic patients (Marks). The improvement in these variables was maintained at 6 and 12 month follow-up.
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[Social anxiety in patients with social phobia: validation of the Liebowitz social anxiety scale: the French version].
The Liebowitz's Social Anxiety Scale (LSAS) (Liebowitz, 1987) is a rating scale of fear and avoidance in social interaction (12 items) and performance-oriented situations (12 items). This paper present the study of empirical and concurrent validation of the LSAS. Ninety-six patients suffering from social phobia according to DSM IV were included and compared with 64 non-clinical control subjects. Both patients and controls were divided into two sub-groups: the LSAS passation by hetero-evaluation or auto-evaluation. Social phobics had much higher scores on anxiety and avoidance of the LSAS than control subjects, whatever the method. There were no differencies between hetero and auto-evaluation in both groups of patients and non-clinical subjects, either on anxiety or on avoidance. The LSAS correlated better with social anxiety and negative cognition in social situations than with anxiety-depression in social phobics. The French version of the LSAS showed a good empirical and concurrent validity and the scale presents a good sensitivity to change after cognitive behavioral therapy in social phobics.
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[Validation of a scale for responsibility (Salkovskis Responsibility Scale)].
Appraisal of inflated responsibility for harm is the cornerstone of Salkovskis's cognitive theory for obsessive compulsive disorder. The aim of our study is to present the validation study of the French translation of the R scale. The present study compared 50 subjects with obsessive compulsive disorder, 37 patients suffering from social phobia and 183 control subjects on a responsibility questionnaire (R scale). The cognitive hypothesis of Obsessive Compulsive Disorder (OCD) specifies two levels of responsibility-related cognitions: responsibility assumptions (attitudes) and responsibility appraisals (interpretations). The R scale evaluates the responsibility assumptions. Such attitudes should reflect the more generalized tendency to assume responsibility in a given situation, particularly situations involving intrusions and doubts. It is possible that such assumptions may be less specific to OCD. The inclusion of social phobia subjects in the present study allows evaluation of the specificity of any findings to OCD. Patients were diagnosed and classified according DSM IV criteria. The control subjects were taken in the general population. No formal interview was conducted. The three groups were compared for sex, age and educational level. Before treatment, all the participants filled in the Responsibility Scale of Salkovskis (27 items), the Beck Depression Inventory (21 items), the Beck Anxiety Inventory and the Bouvard's Obsessive Compulsive Thoughts Checklist. The results indicate that the two anxious groups scored significantly higher than the control group on Beck Depression and Anxiety Inventories but no significant difference was observed between the two anxious groups. OCD patients scored significantly higher than both social phobic patients and control subjects on the Obsessive Compulsive Thoughts Checklist (OCTC). The social phobic group scored this checklist significantly higher than the control group. In sum, the three groups were different on obsessive compulsive thoughts. On the washing subscale of the Obsessive Compulsive Thoughts Checklist, the OCD patients differed significantly from the control group and the social phobia patients. No difference was observed between the social phobia subjects and the control group. On the two other subscales of the OCTC, the checking and the responsibility scales, the three groups were different: OCD patients scored significantly higher than both social phobic patients and control subjects; the social phobic patients scored higher than the control group. Results support the reliability (test retest) and the internal consistency of the questionnaire. Patients with obsessive compulsive disorder (OCD) and social phobia subjects had significantly elevated score on the total scale compared to control subjects. However social phobia patients did not differ from patients with OCD. So, the responsibility for harm, evaluated by the R-scale seems not to be specific of OCD. This finding does not support the results of two studies (28, 30). But these two studies compared OCD patients with an anxious group including panic disorder with agoraphobia, generalized anxiety disorder and social phobia. The correlations with a measure of OCD symptoms were higher than the correlations with anxiety and depression. Finally, the factor structure was only studied on the control group. The exploratory factor analysis indicates that the R scale is a two-dimensional scale, reflecting a need to prevent risks and the belief that one has power to harm. The first dimension is less specific to the pathology than the second. Only patients with OCD had significantly elevated score on the "need to prevent risks" compared to the non-clinical group. The two anxious groups differed on "the belief that one has power to harm" from the non-clinical group but social phobia patients did not differ from patients with OCD. In sum, the two subscales of the R scale did not discriminate OCD patients and social phobic subjects. Further research is needed to replicate the present findings and to confirm the two dimensions of the R scale. Overall, the results are consistent with the hypothesis that responsibility beliefs are important in the experience of obsessional problems. However, responsibility assumptions such as the belief that one has the power to harm are shared with social phobia.
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[Seasonal rhythm of melatonin in manic depressive patients].
Melatonin is secreted by the pineal gland with a circadian and a circannual rhythm. For some authors the circadian rhythm is modified during depressive states. The present study evaluates the melatonin circannual rhythm in five manic-depressive patients. Each patient is clinically and biologically evaluated every month during one year. The results of the present study show a lack of clinical relapse and a lack of seasonal variation of plasma melatonin level.
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[Melatonin and schizophrenia].
Many research studies have been conducted with melatonin, a pineal hormone, in psychiatry. Studies with melatonin in schizophrenic patients are rare. Blood plasma samples were drawn at 24 hours and 12 hours in 23 schizophrenic subjects and 26 controls, during the same season. Plasma melatonin levels were obtained using a specific radioimmunoassay technique. The 24 hours levels significant decreased in schizophrenic patients compared with controls (p less than 0.01). Methodology, specificity of results and concomitant study of cortisol levels are discussed.
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