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Biomedical subjects

Marc Walter

Publications and source records attributed to Marc Walter.

At least 19 recordsLinked to original sources
PubMed2007

Humour therapy in patients with late-life depression or Alzheimer's disease: a pilot study.

BACKGROUND: Of the disabling disorders of the elderly, depression is the most common affective disorder and Alzheimer's disease (AD) the most common neurodegenerative disorder. Pharmacological treatment strategies for these disorders are often accompanied with severe side effects. Therefore non-pharmacological treatment strategies are of great importance. The aim of the present study was to investigate the impact of humour therapy on quality of life in patients with depression or AD. METHODS: Twenty patients with late-life depression and 20 patients with AD were evaluated. Ten patients in each group underwent a humour therapy group (HT) once in two weeks for 60 min in addition to standard pharmacotherapy, which was given as usual to the other group as standard therapy (ST). All patients completed a psychometric test battery at admission and before discharge from the clinic. RESULTS: The quality of life scores improved both in HT and ST groups for depressive patients but not for patients with AD irrespective of the therapy group. Depressive patients receiving HT showed the highest quality of life after treatment. In addition, patients with depression in both therapy groups showed improvements in mood, depression score, and instrumental activities of daily living. CONCLUSIONS: Although there was no significant effect of humour therapy comparing with standard therapy on quality of life, these findings suggest that humour therapy can provide an additional therapeutic tool. Further studies with higher frequently humour groups are required in order to investigate the impact of humour therapy in gerontopsychiatric treatment.

Activities of Daily Living↗
PubMed2006

Social factors but not stress-coping styles predict relapse in detoxified alcoholics.

Alcohol-dependent patients face a substantial risk of relapse after detoxification. Though psychosocial stress and coping strategies are regarded as major contributing factors in returning to drinking, the direct effects of coping styles on relapse are not clear. In this treatment outcome study, a mixed gender sample of 130 detoxified and well-characterized alcohol-dependent patients (37 women) was followed up over a period of 12 months after 6 weeks of inpatient treatment. Patients had completed a comprehensive baseline assessment, including a stress coping questionnaire (SVF120). We hypothesized that these individual stress coping styles would contribute to treatment outcome. A logistic regression analysis was used to evaluate the impact of stress coping styles, as well as the effect of pretreatment drinking and social characteristics on relapse. Approximately half the patients (49%) relapsed within 1 year after treatment. In contrast to our hypothesis, stress coping styles did not predict relapse. However, significant predictors of relapse were social factors related to living situation (living alone), marital status (being separated from the spouse) and pretreatment frequency of alcohol intake. These findings suggest that a partnership is more relevant for the risk of relapse than stress coping styles.

Adult↗
PubMed2006

Controlled study on the combined effect of alcohol and tobacco smoking on testosterone in alcohol-dependent men.

AIMS: The present study examined the association between pre-treatment drinking and smoking parameters and plasma testosterone levels before and after alcohol withdrawal. METHODS: A total of 51 alcohol-dependent men and 43 age-matched healthy men were investigated. In alcoholics, free testosterone in plasma was measured on the day of admission, after detoxification and after 6 weeks of sobriety. RESULTS: While the testosterone level of alcoholic men did not differ from healthy controls at the onset of withdrawal, it was significantly higher for the alcoholics after 6 weeks of sobriety than for the healthy controls. Higher alcohol consumption and higher tobacco use before detoxification led to higher levels of testosterone concentration before and after withdrawal. CONCLUSIONS: The effect of alcohol and tobacco is cumulative, with higher levels of alcohol and tobacco consumption being associated with higher levels of testosterone before and after alcohol withdrawal.

Adult↗
PubMed2006

A functional polymorphism in the promoter region of the monoamine oxidase A gene is associated with the cigarette smoking quantity in alcohol-dependent heavy smokers.

Tobacco smoking represents a leading cause of morbidity and mortality with a strong dose-response relation between the amount of smoking and the risks of tobacco-related diseases and death. The quantity that is smoked is determined predominantly by genetic factors. The present study examined whether there is an association between the quantity of cigarettes smoked and length variation of a functional 30-bp repeat polymorphism in the promoter region of the monoamine oxidase A (MAO-A) gene. The number of 30-bp repeats, which is associated with enzyme activity was assessed in 121 Caucasian men suffering from both alcohol and tobacco dependence. Analysis revealed that the highly active long allele (4 repeat) is associated with a significantly greater amount of cigarette smoking in comparison with the less active short allele (3 repeat). In a logistic regression model (dichotomized), smoking quantity was significantly predicted by MAO-A genotype while no other variable (age, height, body weight, frequency of smoking, quantity and frequency of alcohol consumption) met the significance level. Since tobacco smoke is a potent inhibitor of MAO-A, this result could be regarded as a genotype-related dosage effect. Taken together, in alcohol-dependent heavily smoking men there is evidence for a MAO-A gene-associated effect on the quantity that is smoked as reflected by the daily number of cigarettes consumed.

Alcohol Drinking↗
PubMed2006

No association of dopamine receptor sensitivity in vivo with genetic predisposition for alcoholism and DRD2/DRD3 gene polymorphisms in alcohol dependence.

This study sought to examine dopamine receptor sensitivity among alcoholics in vivo and to explore whether this sensitivity might be associated with functional variations of dopamine D2 (DRD2) and D3 (DRD3) receptor genes along with a genetic predisposition for alcoholism as reflected by an alcohol-dependent first-degree relative. We analyzed the -141C Ins/Del polymorphism in the promoter region of the DRD2 gene and the Ser9Gly (BalI) polymorphism in exon 1 of the DRD3 gene in 74 alcohol-dependent Caucasian men with or without genetic predisposition for alcoholism. In vivo dopamine receptor sensitivity was assessed by measuring apomorphine-induced growth hormone release. A three-way analysis of variance revealed no significant effects of DRD2, DRD3 genotypes and genetic predisposition on dopamine receptor sensitivity. Given the explorative and preliminary character of this investigation, we cannot provide evidence that in alcohol-dependent Caucasian men a genetic predisposition for alcoholism along with functional variants of the DRD2 and DRD3 genes are associated with differences in dopamine receptor sensitivity.

Adult↗
PubMed2006

Cortisol concentrations, stress-coping styles after withdrawal and long-term abstinence in alcohol dependence.

Alcohol-dependent patients face a substantial risk of relapse after detoxification. A major risk factor for relapse is stress which is reflected biologically by various physiological changes that include an activation of the hypothalamic-pituitary-adrenal (HPA) axis and release of glucocorticoids. The prospective study examined cortisol concentrations and stress-coping styles in relation to abstinence 1 year following discharge from treatment. Cortisol concentrations were measured in the plasma of 46 alcohol-dependent patients (12 women) on initial presentation for treatment (day 1), and again in plasma and in cerebrospinal fluid (CSF) after 6 weeks of abstinence (day 40). These results were compared with those of 26 age- and sex-matched, healthy control subjects. After withdrawal, the patients completed a comprehensive baseline assessment including a stress-coping questionnaire (Stressverarbeitungsfragebogen SVF120) and were monitored for 1 year after discharge. Negative stress-coping styles (e.g. flight, resignation) positively correlated with higher cortisol concentration in plasma and in CSF after withdrawal (day 40). Compared with relapsers after 1 year, abstainers had significantly lower levels for cortisol in CSF, whereas the stress-coping styles did not differ between abstainers and relapsers in this sample. These findings suggest that relatively stable personality traits like stress-coping styles have no measurable influence on abstinence. The lower cortisol concentration in CSF as an indicator for HPA axis functioning is associated with long-term abstinence in detoxified alcoholics.

Adaptation, Psychological↗
PubMed2005

A three-axes approach of subtyping the alcohol dependence syndrome.

Subtyping of alcoholics according to specific characteristics has a long tradition in alcoholism research with a number of different typologies that emerged in the literature. The goal of the present study was to test a multidimensional approach of subtyping with characteristics from different axes. Therefore, male inpatients meeting ICD-10 criteria for alcohol dependence were rated on three axes by assessing their degree of sensation seeking (personality axis), age of alcoholism onset (clinical axis) and level of dopamine activity (neurobiological axis). By using a configuration frequency analysis, we identified a subtype that was characterized by high sensation seeking early age of alcoholism onset and high dopamine activity. This subtype, which is in accordance with clinical experience and cannot be explained by antisocial personality disorder, embodied a significantly greater proportion of alcoholics than expected. The result emphasizes the usefulness of multidimensional approaches integrating personality, clinical and neurobiological characteristics.

Adult↗
PubMed2005

Evidence of psychosomatic influences in compensated and decompensated tinnitus.

The purpose of this study was to evaluate the role and interaction of individual factors on decompensated tinnitus. Subjects consisted of 53 adult patients with chronic tinnitus. They were selected and assigned to two groups, compensated (n = 28) and decompensated (n = 25), according to the results of an established tinnitus questionnaire. Both groups were evaluated and compared. The patients with decompensated tinnitus suffered from more pronounced social disabilities, were more prone to depression, and used less effective techniques to cope with their illness. They showed a higher degree of somatic multimorbidity, with particularly strong correlations between tinnitus and the incidence of cardiovascular diseases and hypoacusis. As a consequence, in the psychosomatic tinnitus therapy, greater attention should be given to the treatment of the somatic complaints in addition to psychological and psychosocial aspects.

Adult↗
PubMed2005

Autodestructive syndromes.

BACKGROUND: The phenomenon 'autodestructive behaviour' is becoming an increasingly serious disease and cost factor in a wide range of medical fields. The present paper presents a survey of the literature on autodestructive behaviour, excluding psychotic, substance-induced or organic brain disorders. Starting out with a conceptual overview, the paper goes on to look into the epidemiology of autodestructive behaviour and the forms in which it manifests itself. METHOD: A literature search was conducted in Medline, Psycinfo and Psyndex using the search terms 'artifact', 'artificially induced', 'autodestructive', 'self-mutilation', 'factitious', 'self-harm', 'self-induced', 'self-inflicted', 'self-injuring' and 'self-mutilation' for the period from 1977 to 2003. RESULTS: Five of a total of 18 empirical studies describe the simultaneous occurrence of direct and indirect forms of autodestructive behaviour. Reported prevalence rates range from 0.032% to 9.36%. The ratio of females to males was found to be 2:1 (average age: 31.5 years; SD: 9.3 years); in contrast, the gender ratio was reversed for Munchausen's syndrome. The case history data presented are patchy and differ in terms of their priorities. We found a large number of codiagnoses, which seems to indicate that personality and dependence disorders, or substance misuse, are characteristic of both direct and indirect forms of autodestructive behaviour. CONCLUSIONS: The task at hand is to use a yet-to-be-developed nomenclature and adequately operational diagnostic criteria to work out standardised survey instruments that do justice to the heterogeneity of this disorder complex.

Comorbidity↗
PubMed2005

[Living donor liver transplantation from the perspective of the donor: results of a psychosomatic investigation].

OBJECTIVES: Living donor liver transplantation (LDLT) has been gaining importance in the treatment of endstage liver disease in adults. Thus far, only few empirical studies have been published on the psychosocial situation of donors who are faced with the risk of medical complications after resection of the right hepatic lobe. The aims were to describe the clinical problems before and after transplantation and to contribute to the discussion of ethical issues based on empirical findings. METHODS: In the present overview, the pre-/post-transplant and follow-up periods are characterized from a psychosocial point of view using actual psychosocial and medical findings in living donors of the right hepatic lobe. RESULTS: Before LDLT, 11 % of potential donors were not recommended for the transplantation due to marked ambivalence about the operation. After donation 26 % of donors showed high values for anxious depression and physical complaints despite low rates of surgical complications. CONCLUSIONS: For clinical psychosomatic evaluations of potential donors it is important to provide donors an opportunity to report any misgivings and anxieties as openly as possible. The psychosocial impairment and physical complaints of some donors after transplantation are yet not clearly understood. More psychosocial studies in this field will be necessary to investigate ethical questions and to develop criteria for an evidence-based medical care of living donors.

Anxiety↗
PubMed2005

Psychosocial situation of living donors: moods, complaints, and self-image before and after liver transplantation.

BACKGROUND: Living donor liver transplantation (LDLT) has developed into an established therapy for terminal liver diseases. There is, however, little knowledge of the psychosocial situation of living donors. The aim of this study was to investigate the course of donors' moods, physical complaints, and self-image in the preoperative decision process and six months after surgery. MATERIAL/METHODS: Fifty-two potential donors were evaluated at the Charité Berlin. On the basis of the clinical interview, seven (13%) potential donors were not recommended for LDLT for psychosocial reasons. Twenty-six donors underwent liver resection and were re-evaluated six months after surgery. Donors' moods were investigated with the Berlin Mood Questionnaire (BMQ) and their physical complaints were assessed by the Giessen Complaint Questionnaire (GCQ). The Narcissism Inventory (NI-90) was used to assess their self-image. RESULTS: Potential donors who were not recommended for surgery showed significantly higher values for negative moods, physical complaints, and 'narcissistic rage". After surgery, donors' self-images were generally stabilized. Nevertheless, five donors (19%) showed high values for "threatened self" before and after transplantation, as well as high values for negative moods and complaints after LDLT. CONCLUSIONS: The resection of the right hepatic lobe holds promise of a good psychosocial outcome, with stable self-image and self-esteem for most donors. A minority of donors exhibited enhanced perception of distress and low self-esteem before and after surgery, which can easily be overlooked in the preoperative evaluation. A psychometric assessment of self-image before transplantation should be added to the clinical interview evaluation of potential living donors.

Adult↗
PubMed2004

Motivation for living-donor liver transplantation from the donor's perspective: an in-depth qualitative research study.

BACKGROUND: There has been a lack of systematic in-depth research on the motives of living liver donors before transplantation that could contribute to an advanced understanding of their situation and to a more precise psychosocial evaluation, to protect the autonomy for decision, and to prevent psychosocial complications. METHODS: Twenty-eight living liver donors were assessed preoperatively through a semistructured clinical interview. The taped and transcribed interviews were analyzed using a combination of grounded theory and empirically grounded type construction. RESULTS: Various factors contribute to the donor's motivation for donation: the relationship to the recipient, the personal attitude of the donor, his or her personal history, family dynamics, the donor's personal profit, and the exceptional situation of the recipient's life-threatening disease combined with the life-rescuing possibility of living-donor liver transplantation (LDLT). In reference to this, five "ideal types" of living donors emerged from the authors' data. CONCLUSIONS: A complete absence of coercion on the decision to donate seems unrealistic because of the dynamics initiated by the life-threatening condition of the recipient. It is important that donors feel they are gaining something by donation to be sufficiently motivated and that their profit is of an emotional or moral nature (i.e., the donation being set in an emotionally meaningful context). A mature relationship with the recipient usually provides such a context. The role of the clinician as a part of LDLT dynamics has a decisive influence.

Adult↗
PubMed2003

[Personality and donor-recipient relationships of potential donors before living donor liver transplantation--diagnostics with the repertory-grid technique].

BACKGROUND: Living-donor liver transplantation (LDLT) is developing into an established therapy for terminal liver diseases in adults. Potential donors are faced with the risk of postoperative complications and are subject to a high level of psychological pressure and ambivalent feelings. Our assumption is that ambivalent feelings before donation are crucially influenced by the personality and the quality of the donor-recipient relationship. In highly motivated donors we expected a positive description of the recipient and a similarity in the characterisation of the donor and recipient. METHODS: 58 potential living donors were evaluated between March 2000 and June 2001. On the basis of the clinical interview 10 were rated as unsuited for donation. Among those potential donors assessed as unsuited, we found a high level of ambivalent feelings. For 50 potential donors we gained a set of completed psychometric diagnostic questionnaires. A Repertory-grid investigation was conducted with a total of 28 potential donors. Seven of them were not recommended as living donors. The relationship between donors and recipients was analysed concerning constructs that were most important to the characterisation of the donor or recipient. By means of inter-element distances self-concept of donors and donor-recipient relation were analysed. RESULTS: Ambivalent candidates who were not recommended as living donors tended to describe the recipient negatively (selfish, carping, and unable to take criticism) and did not show a similarity in the characterisations of self and ideal-self. Whereas the highly motivated candidates were marked by a closeness of self and ideal-self concepts. Both groups saw the recipient as indifferent. CONCLUSION: Closeness between self and ideal-self-indicating satisfaction with the decision to donate seems to be one suitable criterion to distinguish between highly motivated potential donors on the one hand and ambivalent candidates on the other hand. Another criterion appears to be a description of the recipient that indicates either a functioning or ill-functioning communication between donor and recipient with respect to the donation.

Adult↗
PubMed2003

[Differential diagnosis of psychotic symptoms in adolescents and young adults with borderline personality disorder].

OBJECTIVE: This paper reviews findings and problems of differential diagnosis between Borderline personality disorders and schizophrenic illness in adolescents and young adults with psychotic symptoms. METHOD: Therefore relevant especially psychodynamically oriented publications were analysed and related to clinical experiences. RESULTS: Differential diagnostic classification of psychotic symptoms in this age group is difficult, especially when disorder criteria are not yet completely met. Differential diagnostic hints which can indicate severe adjustment problems, Borderline personality disorder and schizophrenia as well as specific diagnostic difficulties are presented in this paper. CONCLUSIONS: Well-reasoned differential diagnosis reveals significant findings for treatment options.

Adjustment Disorders↗
PubMed2002

Telomerase immortalization upregulates Rab9 expression and restores LDL cholesterol egress from Niemann-Pick C1 late endosomes.

Niemann-Pick C (NPC) disease is a rare recessive lipidosis marked by excessive accumulation of LDL-derived free cholesterol and glycosphingolipids in the late endosomal-lysosomal (E-L) system. Here we report that ectopic expression of human telomerase reverse transcriptase (hTeRT) in human cells leads to an upregulation of the small GTPase Rab9 and its effector p40. Expression of hTeRT in NPC1 cells results in a correction of their cellular phenotype, including clearance of accumulated cholesterol from their E-L system. Specifically, in NPC1-TeRT cells, the transport of cholesterol from the E-L system to the plasma membrane is restored with a concomitant increase in cholesterol esterification. This effect is Rab9-specific since expression of Rab9 in untransformed NPC1 cells also leads to a reversal of their disease phenotype. These effects are also seen in normal TeRT-immortalized cells and it appears that TeRT expression leads to an increase in the transport of molecules, including cholesterol, from the E-L system, and may play a role in increasing cellular proliferation. These results suggest the existence of alternative endogenous therapeutic targets that can be modulated to reverse the NPC1 disease phenotype.

Animals↗
PubMed2002

Psychosocial data of potential living donors before living donor liver transplantation.

In view of the scarcity of organ resources for transplantation, donation by living donors is assuming greater significance now that the technical-surgical problems involved have been solved. In the period between December 1999 and December 2000, 47 potential living liver donors were evaluated and a total of 27 hepatic lobes were transplanted at the Virchow-Klinikum of the Charité Hospital in Berlin. The close personal relationships between recipients and donors gives reason to anticipate high levels of psychosocial pressure during the pre-operative evaluation process; this process consists in part in looking into donor motivation, ambivalence and anxiety. The pre-operative psychometric evaluation of 40 potential living donors indicated that most of the potential donors see themselves as 'super-healthy' and tend to adapt to social expectations, while on the other hand those seven potential living donors not accepted for psychosocial reasons were marked by heightened values for anxious depression and pessimism. The results indicate in most cases a great willingness to donate and on the other hand a high level of obvious psychological pressure for a low number of potential donors. For the latter, both the clinical evaluation interview and the psychometric diagnostics used revealed clear-cut feelings of anxiety and ambivalence towards transplantation.

Adult↗