[Three clinical risk profiles of violent behavior in a cohort of early psychosis patients].

Objective: This study aims to determine whether it is possible to identify clinical profiles at risk of violent behaviors (VB) in the early phase of psychotic disorders, on the basis of the main dynamic psychopathological risk factors and describe characteristics of the groups with highest levels of violent behaviors.

Method: A total of 265 patients, aged 18 to 35, treated at the Treatment and early Intervention in Psychosis Program (TIPP-Lausanne), a specialized early psychosis program, were included in this study. We conducted a latent-class analysis and a discriminative analysis on the basis of the main dynamic VB risk factors: substance use disorder, impulsivity, positive symptoms, insight, aggression, hostility, anger, emotional instability and adherence to treatment.

[The approach to "normality". Study of patients pronounced "normal" consulting the Lausanne university psychiatric polyclinic 1957 to 1979].

The author studied the variation of the use of the diagnostic item "without apparent psychic symptoms" by the physicians of the University Psychiatric Outpatient Clinic in Lausanne between 1957 and 1979. The results showed a rise and then a fall of the use of this diagnostic item; the variation is related more to institutional habits and opportunity than to the concept of "normality". The rise can be explained by diverse circumstances amplifying the opportunity to use this item, while the fall is in relation to a change in habits of formulation and codification.

Treatment of endogenous depressions resistant to tricyclic antidepressants or related drugs by lithium addition. Results of a placebo-controlled double-blind study.

The therapeutic efficacy of lithium added to tricyclic antidepressants (TCA) or related thymoleptics was investigated in 27 endogenous depressive patients responding unsatisfactorily to these drugs alone. All patients received lithium during two weeks, however, with a delay of one week in 13 of them, the attribution to active treatment or placebo for the first seven days being double-blind. A statistically significant improvement compared to placebo occurred after lithium addition.

Binding of amitriptyline to alpha 1-acid glycoprotein and its variants.

Binding studies have been performed between amitriptyline and i) native alpha 1-acid glycoprotein (AAG); ii) its desialylated form; iii) its two variants, S-AAG and F-AAG; and iv) a mixture of S-AAG and F-AAG. Scatchard analysis revealed the presence of two classes of binding sites on AAG. For native AAG, the first class (of high affinity) has an association constant (Ka1) of 1.

Isoelectric focusing of alpha-1 acid glycoprotein (orosomucoid) in immobilized pH-gradients with 8M urea: detection of its desialylated variants using an alkaline phosphatase-linked secondary antibody system.

A method allowing a clear separation of the different variants of desialylated alpha 1-acid glycoprotein (orosomucoid) has been developed using isoelectric focusing in immobilized pH gradients, supplemented with 8 M urea and 2% v/v 2-mercaptoethanol. Immunoblotting with two antibody-steps afforded high sensitivity and permitted the detection of about 700 pg of alpha 1-acid glycoprotein in a 20 microL plasma sample diluted 1:28 672. A one year old bloodstrain, kept at room temperature, could easily be phenotyped.

Orosomucoid (alpha-1 acid glycoprotein) phenotyping by use of immobilized pH gradients with 8 M urea and immunoblotting. A new variant encountered in a population study.

Orosomucoid (ORM) phenotyping has been performed on 329 unrelated Swiss subjects, using immobilized pH gradients with 8 M urea and 2% v/v 2-mercaptoethanol followed by immunoblotting. After desialylation the band patterns of ORM confirmed that the polymorphism of the structural locus ORM1 is controlled by three codominant autosomal alleles (ORM1*F1, ORM1*S and ORM1*F2). One rare and one new allele were detected.

GC and GC-MS procedures for simultaneous phenotyping with dextromethorphan and mephenytoin.

A genetic deficiency in the metabolism of dextromethorphan and mephenytoin may be revealed by the excretion pattern of dextromethorphan and its metabolite dextrorphan, and mephenytoin, 4-OH-mephenytoin, respectively, after a single dose of the test drugs. Existing methods were modified for determining the compounds in 0.1-0.

Selectivity in the binding of psychotropic drugs to the variants of alpha-1 acid glycoprotein.

The S- and F-forms of alpha-1 acid glycoprotein (AAG) variants have been isolated by isoelectric focusing with immobilines from commercially available AAG. In equilibrium dialysis experiments using a multicompartmental system, a higher affinity for various basic drugs has been found with S- in comparison with F-AAG: Amitriptyline, nortriptyline, imipramine, desipramine, trimipramine, methadone, thioridazine, clomipramine, desmethylclomipramine, and maprotiline. The selectivity (binding to S- vs.

[Topographic aspects of visual and auditory evoked potentials in schizophrenics].

The EPs to bilaterally presented non-verbal and non-cognitive visual and auditory stimuli were studied in 15 schizophrenics and 15 normal subjects. Many anomalies of exogenous components of VEPs and AEPs were observed in schizophrenics in comparison with control subjects, pointing to an abnormal cerebral functioning. So, the patients presented: (1) a less interhemispheric difference in latency of P100 component of VEPs over the occipital area; (2) a decrease or a lack of left hemispheric predominance of P2 component of AEPs over the central area; (3) a lower interhemispheric waveform similarity both for VEPs and AEPs.