Biomedical subjects

Michael Lucht

Publications and source records attributed to Michael Lucht.

7 recordsLinked to original sources

PubMed2006

Negative perceived paternal parenting is associated with dopamine D2 receptor exon 8 and GABA(A) alpha 6 receptor variants: an explorative study.

Twin studies suggest a genetic influence upon perceived parenting. The D(2) dopaminergic receptor is involved in the modulation of social behaviors, and might influence parenting and its perception. A polymorphism (E8) in exon 8 of the D(2) receptor gene (DRD2) has been previously associated with alcoholism-related phenotypes. Similarly, the Pro385Ser variant of GABRA6, the polymorphic gene for GABA(A) receptor alpha6 subunit, has been associated with alcohol- and depression-related traits; and rat pups maintained a more immature GABAR phenotype after brief separation distress. The relationships among DRD2 (E8) and GABRA6 (Pro385Ser) polymorphisms, and perceived parenting were studied here. The association of DRD2 (E8) and GABRA6 (Pro385Ser) genotypes and perceived parental rearing behavior (short-EMBU; questionnaire concerning own memories concerning upbringing) were determined in 207 unrelated adults using multivariate analysis of variance. Temperaments (Temperament and Character Inventory; TCI) were included as covariates. Probands with DRD2 (E8) A/A genotype showed higher scores for father rejection (P = 0.011), parents overprotection (P = 0.021), and father overprotection (P = 0.016) in the total group. An interaction between DRD2 and GABRA6 genotypes on father rejection (P = 0.010) and parents rejection (P = 0.030) was also observed. Further analyses showed that these associations were restricted to the female subgroup only; however, secondary gender-specific analyses were not corrected for multiple testing. Our findings support a role for DRD2 (E8) and GABRA6 (Pro385Ser) in perceived parenting.

Adult↗

PubMed2004

The relation of a family history of alcoholism, obstetric complications and family environment to behavioral problems among 154 adolescents in Germany: results from the children of alcoholics study in Pomerania.

BACKGROUND: Behavioral problems in adolescence have been shown to be associated with the presence of a positive family history of alcoholism (FH+), obstetric complications (OCs), and negative parenting practices. METHOD: This study tested the relation of these factors to aggression/delinquency and attention problems in an untreated population sample of 154 adolescents in Pomerania. Furthermore, we evaluated the predictive strength of a FH+, OCs and negative parenting styles in a prospective subsample of 127 adolescents using a hierarchical regression analysis. RESULTS: Group comparisons between offspring with higher vs. lower values on aggression/delinquency revealed that only rejection by the parents was significantly more often reported by teenagers with higher measures on these behavioral problems. Offspring with higher values on attention problems had more OCs reported by the mother and also had more feelings of parental rejection compared to controls. The results of the hierarchical regression analysis showed that parental rejection was the only significant predictor for both aggression/delinquency, and attention problems measured 1 year after the initial assessment. CONCLUSION: We conclude that parental rejection is a major risk factor for both aggression/delinquency and attention problems. Reflecting the fact that these behavioral problems have been reported to be strongly associated with later substance misuse, the improvement of parenting practices should be considered in prevention and intervention programs.

Adolescent↗

PubMed2002

The importance of psychosocial factors, gender, and severity of depression in distinguishing between adjustment and depressive disorders.

BACKGROUND: This study evaluated the severity of depressive symptomatology as it relates to: (a) sociodemographic factors and (b) the occurrence and type of acute and chronic psychosocial triggers or life events before admission. METHODS: In total, 718 psychiatric inpatients were assessed with the AMDP-system by the treating psychiatrist within the first 2 days after admission. RESULTS: In the females, sociodemographic factors (being married, children in the household, higher education and the quality of interactions) but not psychosocial stressors or life events were found to be related to severity of depression on admission. Females showed more severe depressive syndromes than males, however, depression severity in males was independent of sociodemographic factors, life events or psychosocial triggers. LIMITATIONS: Clinical assessment was based on retrospective history taking. The sample consisted of inpatients only, the results require replication using larger and more diverse samples. CONCLUSION: Gender differences and life conditions such as familial distress are related to severity of depression. The present criteria for the differentiation between depressive disorders and adjustment disorders are not independent and should be substituted by a multiaxial assessment.

Acute Disease↗

PubMed2002

The importance of a positive family history of alcoholism, parental rejection and emotional warmth, behavioral problems and peer substance use for alcohol problems in teenagers: a path analysis.

OBJECTIVE: The purpose of this study was to test a hypothetical model of alcohol problems in German adolescents. Among 180 offspring, family history of alcoholism, parenting styles, behavioral and emotional problems, peer-group characteristics, feelings of self-esteem, behavioral problems and psychiatric comorbidity of the parents were examined. METHOD: Data were generated from the Study of Health in Pomerania (SHIP), in which families were randomly selected if 12-18 year old biological offspring were members of the household; a smaller group of subjects was selected from local outpatient treatment centers. Members of 133 families, including 180 (50.6% male) offspring who were appropriate for the current analyses, received personal semistructured diagnostic interviews and several self-rating questionnaires. Analyses compared offspring with alcohol problems (AP; n = 40) and with no alcohol problems (NAP; n = 140), and used structural equation modeling to test a hypothetical model. RESULTS: The comparisons revealed that the AP group had significantly more behavioral problems (e.g., aggression/delinquency), more perceived parental rejection and less emotional warmth, a higher amount of alcohol consumption, were more likely to associate with substance-using peers and more often received a diagnosis of conduct disorder or antisocial personality disorder. Whereas the family history of alcoholism did not differ significantly between groups, parents of offspring with an alcohol use disorder had significantly more additional diagnoses on DSM-IV Axis I. The evaluation of the model supported the importance of aggression/delinquency and association with substance-using peers for alcohol problems in people. An additional diagnosis in the parents was directly and indirectly (through aggression/delinquency) related to alcohol problems of the adolescents. CONCLUSIONS: The data indicate that alcohol problems in the offspring are associated with several domains of influence in their environment. Prospective studies measuring both biological and environmental factors using sufficient sample sizes will be needed for optimal understanding of the development of alcohol problems in youth.

Adolescent↗

PubMedDate not supplied

Do alcohol expectancies and peer delinquency/substance use mediate the relationship between impulsivity and drinking behaviour in adolescence?

AIMS: To investigate (1). whether aggressive and delinquent behaviour problems predict subsequent adolescent drinking behaviour; and (2). to what extent this association is mediated by alcohol expectancies and/or peer delinquency/substance use. METHODS: 147 adolescents (approximately 15 years old) were interviewed with regard to their drinking behaviour. In addition, several self-rating questionnaires were given to gather information regarding the peers of these children. RESULTS: As proposed by the Acquired Preparedness Model (APM), we found that behavioural problems were related to quantity and frequency of alcohol consumed, and that this relationship was mediated by alcohol expectancies. Regarding peer relations, we found positive correlations between drinking behaviour and peer delinquency/substance use, aggression/delinquency and alcohol expectancies. Furthermore, the association between behavioural problems and drinking decreased dramatically if peer delinquency/substance use was accounted for. A hierarchical regression analysis revealed that both alcohol expectancies and peer delinquency/substance use predicted alcohol consumption of adolescents at the 1-year follow-up above and beyond the effects of age, sex, family history of alcoholism and aggression/delinquency of respondents. CONCLUSIONS: Alcohol expectancies and peer delinquency/substance use are both crucial to the amount and frequency of adolescent alcohol use. They should be considered in designing prevention and intervention strategies in this age group.

Adolescent↗

PubMedDate not supplied

Gender differences in dissociation. A dimensional approach.

Considering that epidemiological research on dissociative disorders has suggested a 9 to 1 predominance of female cases, this study investigated the relationship between gender and dissociation using a dimensional approach. A total of 2,153 participants from different diagnostic groups completed the Dissociative Experience Scale. In order to control for the confounding effect of current psychopathology a subgroup 790 subjects additionally completed the SCL-90. We did not find any differences in the general or pathological dissociation scores. Hypothetical gender differences in dissociative psychopathology were not a function of diagnostic categories. There were no significant sex differences in the distribution of high dissociators. Our findings suggest that men and women do not generally differ in dissociative psychopathology. The implications for future investigations on the epidemiology, etiology, and psychobiology of dissociative symptoms are discussed.

Adolescent↗

PubMedDate not supplied

Influence of age of patients who wish to die on treatment decisions by physicians and nurses.

OBJECTIVE: There is an ongoing debate on whether the wish to die in old age is a normal phenomenon and should be accepted as opposed to similar wishes in younger ages. The authors asked to what extent the age of a patient influences treatment decisions of physicians and nurses. METHODS: Real-life case vignettes of three persons ages 70 and over, with subthreshold depression and a wish to die, were presented to 19 physicians and 83 nurses, with the question of whether they would initiate psychopharmacological treatment or psychotherapy. For half of the participants, the real age of these persons was reduced by 20 years. Neither the participants nor the facilitators were aware of the focus of the study. RESULTS: The patient's age had a major influence on treatment decisions by physicians and nurses. The question of whether patients who expressed the wish to die should receive treatment, be it psychotherapy or intensive care, was answered with "yes" by both physicians and nurses significantly less frequently when the real age of the patient was known, whereas when a lower patient age (-20 years) was given, they more often saw the need for psychotherapy or other medical interventions. CONCLUSIONS: Age stereotypes have an influence on medical decision-making. Physicians and nurses must be trained in this respect in order to avoid maltreatment of elderly patients.

Adult↗