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  • 1
    ISSN: 1369-1600
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The serotonergic neurotransmission was suggested to play an important role in the aetiology of alcoholism. This study explores the association between tryptophan hydroxylase (TPH)-alleles and Loudness Dependence of Auditory Evoked N1/P2 Potentials (LDAEP). The TPH is the rate-limiting biosynthetic enzyme in serotonergic pathway. The LDAEP is one of the best validated non-invasive indicators for serotonergic neurotransmission. A sample of 54 alcoholics was recruited. N1/P2 potentials were evoked by five different sound intensities. A dipole source analysis using BESA (brain electric signal topography) was performed and intensity dependence was computed. The TPH intron 7 polymorphism was determined by using PCR in DNA samples. There was a weak but significant association between low LDAEP and the L-TPH allele. No influence from an individual's history of alcohol dependence or a positive family history of alcohol dependence on LDAEP was found. The weak but significant relationship found between L-TPH-allele and high serotonergic neurotransmission may contribute to a more detailed neurobiological characterization of alcohol dependents using functional and genetic parameters.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Lebensqualität ; Metaanalyse ; Depressive ; Schizophrene ; Facettenanalyse ; Modulares System ; Key words Quality of life ; Metaanalysis ; Depression ; Schizophrenia ; Facet analysis ; Modular system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The construct Quality of Life (QoL) is investigated by metaanalysis of eight (inter)nationally validated questionnaires in a multicenter study. Data have been collected in a mentally healthy (n=479), a depressed (n=171) and a schizophrenic (n=139) sample. Conventional psychometric criteria and a facet analytical methodology have been applied. The resulting questionnaire „Modular System for Quality of Life” (MSQoL) consists of a core module with 47 items (one „G-factor” and six subdimensions), which is sufficiently valid for all three samples. Additionally, there are four specific modules (demography, family, partnership, profession). No specific modules can be identified for the psychopathological subgroups. The validated radex structure for subjective QoL offers the opportunity for a cumulative research design and for adaptations to the actual setting.
    Notes: Zusammenfassung In einer von der Arbeitsgruppe „Lebensqualität (LQ)” der „Arbeitsgemeinschaft für Methodik und Dokumentation in der Psychiatrie” (AMDP) unterstützten multizentrischen Studie wird das Konstrukt Lebensqualität (LQ) anhand von acht (inter)national validierten Erhebungsinstrumenten sowie einer gesunden (n=479), einer depressiven (n=171) und einer schizophrenen (n=139) Stichprobe metaanalytisch untersucht. Neben herkömmlichen psychometrischen Kriterien liegt der methodische Schwerpunkt dabei auf einem facettenanalytischen Vorgehen. Der resultierende Fragebogen „Modulares System zur Lebensqualität” (MSLQ) besteht aus einem für alle 3 Stichproben hinreichend validen Kernmodul mit 47 Items (ein „G-Faktor” und 6 Subdimensionen) sowie 4 spezifischen Modulen (Demographie, Familie, Partnerschaft, Beruf). Für die psychopathologischen Subgruppen lassen sich keine spezifischen Module etablieren. Die validierte Struktur der subjektiv eingeschätzten Lebensqualität (in Form einer facettenanalytischen Radexkonstellation) bietet die Möglichkeit zu einer kumulativ angelegten Forschung und einer untersuchungsspezifischen Anpassung des MSLQ.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Wahn ; Wahnentstehung ; Urteilsverhalten ; Key words Delusion ; Origin of delusion ; Decision making
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Delusion as a phenomenon was always in the focus of psychiatric interest. Explanations for its origin reach from disturbed perception or affect to deficits in cognition. In our study we investigated 20 deluded, 20 depressive and 20 healthy subjects in order to find out differences in decision making, while a neutral test situation. Our hypothesis was that deluded subjects need less information for decision making and tend less to change their decision, made before, than both control groups will do this. For examination our hypothesis a modified version of “Probabilistic Inference Task” by Philips and Edwards was performed. In summary we found that deluded subjects need less information for decisions making than the control groups. Furthermore, decision making of deluded subjects seems more impulsive and less referring to formal logical criteria than it was found in depressed and healthy volunteers.
    Notes: Zusammenfassung Das Phänomen Wahn steht seit jeher im Zentrum des psychiatrischen Interesses. Die in der Vielzahl von Hypothesen zur Wahnentstehung diskutierten Ursachen reichen von Störungen der Wahrnehmung oder des Affektes bis hin zu kognitiven Störungen. In unserer Untersuchung mit 20 wahnhaften, 20 depressiven und 20 gesunden Probanden gingen wir der Frage nach, ob sich zwischen den drei genannten Gruppen Unterschiede im Urteilsverhalten während einer neutralen Testsituation aufzeigen lassen. Unsere Hypothese dabei war, daß wahnhafte Probanden zur Urteilsbildung deutlich weniger Information heranziehen und an ihren einmal gefällten Urteilen rigider festhalten, als dies bei einer gesunden und depressiven Kontrollgruppe der Fall ist. Zur Überprüfung der Hypothesen wurde eine modifizierte Version des “Probabilistic Inference Task” von Philips and Edwards eingesetzt. Zusammenfassend zeigte sich, daß die Gruppe der wahnhaften Probanden zur Entscheidungsfindung signifikant weniger Informationen als die beiden Kontrollgruppen benötigte. Das Urteilsverhalten insgesamt erschien bei den wahnhaften Probanden deutlich impulsiver und weniger auf formallogisch nachvollziehbaren Kriterien beruhend als dies in den beiden anderen Probandengruppen der Fall war.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-0407
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Der Anaesthesist 48 (1999), S. 507-518 
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Postoperatives Delir ; Postoperative psychiatrische Störungen ; Therapie ; Prophylaxe ; Key words Postoperative delirium ; Postoperative psychiatric disturbance ; Treatment ; Prophylaxis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract After surgical operations delirium can occur as a serious and possible lethal complication in about 5–15% of patients. Additionally, risk factors such as old age, polymedication, organic and psychiatric diseases raise the incidence. After open-heart- and orthopedic surgery more than half of the patients are affected. Delirium has negative effects on postoperative mobilization and reconvalescence and prolongs treatment on the ward. It is discussed in the literature that delirium may induce dementia in older patients. The correction of metabolic- and electrolyte imbalances, as well as the therapy of neurologic and psychiatric diseases, belongs to prophylactic treatment. Environmental conditions which facilitate reorientation of the patient after operation have beneficial effects. Some success has been achieved by using the nootropic substance piracetam as a prophylactic. In acute treatment, the butyrophenon-neuroleptic haloperidol is the drug of choice. In delirium caused by intoxication with anticholinergic agents, physostigmin is indicated. Benzodiazepines, clonidine and clomethiazole are used in particular for the treatment of withdrawal delirium.
    Notes: Zusammenfassung Nach operativen Eingriffen kommt es bei 5 bis 15% der Patienten zu einem Delir, welches eine ernste und potentiell tödliche Komplikation darstellt. Bei zusätzlich bestehenden Risikofaktoren wie hohem Alter, medikamentöser Mehrfachtherapie, somatischen und psychiatrischen Störungen findet sich eine noch wesentlich höhere Inzidenz. Bei Operationen am offenen Herzen und orthopädischen Eingriffen sind über die Hälfte der Patienten betroffen. Das Delir beeinträchtigt die postoperative Mobilisierung und Rekonvaleszenz der Patienten und führt zur Verlängerung des stationären Aufenthalts. Die Gefahr einer dementiellen Entwicklung als Spätfolge des Delir bei älteren Patienten wird in der Literatur diskutiert. Zu den Maßnahmen der Prophylaxe zählen die Behandlung von metabolischen Entgleisungen, Ausgleich von Elektrolytstörungen und Therapie von neurologischen und psychiatrischen Erkrankungen. Verhaltensmaßnahmen, die die Orientierung des Patienten nach der Operation erleichtern, haben eine günstige Wirkung. Erfolge wurden durch die prophylaktische Verabreichung des Nootropikums Piracetam berichtet. In der Akutbehandlung ist das Butyrophenon-Neuroleptikum Haloperidol Mittel der Wahl zur Sedierung. Bei Delirien auf der Grundlage einer Intoxikation mit anticholinerg wirkenden Pharmaka ist Physostigmin indiziert. Benzodiazepine, Clonidin und Clomethiazol kommen v.a. bei der Behandlung des Entzugsdelir zum Einsatz.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Herz-, Thorax- und Gefässchirurgie 13 (1999), S. 139-146 
    ISSN: 0930-9225
    Keywords: Schlüsselwörter Antikoagulantien – Phenprocoumon – Antidepressiva – Arzneimittelinteraktion ; Key words Anticoagulation – phenprocoumon – antidepressants – drug-drug interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A potential impact of tricyclic antidepressants on oral anticoagulation is controversial. Phenprocoumon – the most commonly used anticoagulant in Germany – is rarely considered in clinical trials. In the present study, a potential drug-drug interaction between phenprocoumon and tricyclics, causing an alteration in prothrombinemic effects, has been investigated. In eleven patients simultaneously receiving tricyclic antidepressants and phenprocoumon the course of Quick values and the phenprocoumon dosages were compared to a control group of eleven phenprocoumon treated patients not receiving tricyclics. Quick value deviations from the individually required therapeutic ranges 〉25%, as well as frequent changes in the phenprocoumon dosages were indicators of an inconstant oral anticoagulation and a possible interaction. The results showed unstable prothrombinemic effects throughout tricyclic antidepressant therapy. The average Quick value deviation amounted to 68.7% in the patients group and to 13.1% in the control group. Additionally, there was an average change in phenprocoumon dosage of 0.6 in the patients group and of 0.2 in the control group. Further controlled studies are certainly warranted to specifically answer the question of a clinically relevant drug-drug interaction.
    Notes: Zusammenfassung Eine mögliche Beeinflussung der Antikoagulanzientherapie durch trizyklische Antidepressiva wird bislang unterschiedlich bewertet. Vor allem das in Deutschland therapeutisch eingesetzte Antikoagulanz Phenprocoumon bleibt bei Untersuchungen nahezu unberücksichtigt. Die vorliegende retrospektive Studie wurde unter der Fragestellung einer potentiellen Arzneimittelinteraktion zwischen Phenprocoumon und Trizyklika durchgeführt. Bei 11 gleichzeitig mit Trizyklika und Phenprocoumon behandelten Patienten und 11 antikoagulierten Kontrollen ohne antidepressive Therapie erfolgte eine Gegenüberstellung von Quickwertverlauf und Phenprocoumondosis während und außerhalb trizyklischer Therapie. Quickwertabweichungen vom therapeutischen Bereich 〉25% und häufige Phenprocoumon-Dosiswechsel galten als Zeichen einer instabilen Antikoagulation und einer zugrundeliegenden Interaktion. Sowohl im intraindividuellen Patientenvergleich wie auch in der Gegenüberstellung von Patienten- und Kontrollkollektiv wurde eine instabile Phenprocoumonwirkung unter Trizyklikatherapie gezeigt. Die mittlere Quickwertabweichung [mQWA] betrug im Patientenkollektiv 68,7%, im Kontrollkollektiv 13,1%. Für das Patientenkollektiv wurde eine mittlere Dosiswechselzahl [mDWZ] von 0,6 errechnet. Im Kontrollkollektiv lag die mDWZ bei 0,2. Inwiefern unsere Beobachtungen als Indikator einer potentiellen Arzneimittelinteraktion gelten können, ist in diesem Rahmen nicht abschließend zu beurteilen. Zur endgültigen Abklärung der Fragestellung erscheint die Durchführung prospektiver Studien angezeigt.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1364-6753
    Keywords: Key words Alzheimer disease ; Amyloid plaques ; APOE gene ; Dementia ; Neurofibrillary tangles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: ABSTRACT Alois Alzheimer published two papers on the disease which was named after him by Emil Kraepelin in 1910. Each of these papers contains clinical and pathological data on a patient Alzheimer had seen at the hospital. We have previously reported on the rediscovery of tissue sections from Alzheimer's second published case of Alzheimer disease, Johann F., which probably gave the disease its name (Neurogenetics 1997; 1 : 73–80). Here, we describe the histopathology and APOE genotype of Alois Alzheimer's first patient, Auguste D. As in the case of Johann F., a large number of tissue sections belonging to Alzheimer's laboratory, which was later headed by Spielmeyer, were found among material kept at the Institute of Neuropathology of the University of Munich. As described by Alzheimer in his original report (Allg Zeitschr Psychiatr 1907; 64 : 146–148), there were numerous neurofibrillary tangles and many amyloid plaques, especially in the upper cortical layers of this patient. Yet, there was no microscopic evidence for vascular, i.e., arteriosclerotic, lesions. Interestingly, Alzheimer's histological preparations did not include the hippocampus or entorhinal region. The APOE genotype of this patient was shown to be ε3/ε3 by PCR-based restriction enzyme analysis, indicating that mutational screening of the tissue is feasible. The historical importance of the case of Auguste D. lies in the fact that it marks the beginning of research into Alzheimer disease. In addition, neurofibrillary tangles were first described in this brain.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2072
    Keywords: Key words Amisulpride ; Atypical antipsychotic ; Schizophrenia ; Haloperidol ; Productive symptoms ; Secondary negative symptoms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Amisulpride is a substituted benzamide with high selectivity for dopaminergic D2 and D3 receptors. This study compared 800 mg/day amisulpride and 20 mg/day haloperidol in patients with acute exacerbations of schizophrenia. This multicenter, double-blind trial involved 191 patients allocated, after a 1 to 7-day wash-out period, to amisulpride (n = 95) or haloperidol (n = 96) for 6 weeks. Improvement of mean BPRS total score was 48% for amisulpride and 38% for haloperidol (NS), whereas improvement in the Negative PANSS subscale was greater in the amisulpride group (37%) compared to haloperidol (24%) (P = 0.038). CGI scores showed a higher number of responders in the amisulpride (62%) than in the haloperidol group (44%) (P = 0.014). More extrapyramidal symptoms measured with the Simpson-Angus scale were provoked in the haloperidol group (P = 0.0009). Amisulpride is at least as effective as haloperidol in the treatment of acute exacerbations of schizophrenia, and is more effective in the treatment of negative symptoms whilst causing less parkinsonism.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2072
    Keywords: Schizophrenia ; negative symptoms ; clinical trials ; psychiatric status rating scales ; neuroleptics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract There is little agreement about the methodology of clinical trials of antipsychotic drugs in patients with negative symptoms. A literature review revealed wide variation in experimental design, rating scales and study duration. This reflects differing views as to the definition and response to treatment of negative symptoms. Some degree of standardization would improve comparability of studies and aid the development of new compounds. Patients included in such studies should have displayed negative symptoms for at least 6 months. Depressive symptoms, positive schizophrenic symptoms and extrapyramidal signs may all influence or be confused with negative symptoms and may respond to treatment; they should be at a low level at baseline and should be measured during the study period. Studies should last at least 8 weeks. Several scales are available for measuring negative symptoms and are reviewed; a global impression score should be used additionally.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 69 (1991), S. 413-415 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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