PubMed Health⌕ Search

Biomedical subjects

E Troughton

Publications and source records attributed to E Troughton.

At least 19 recordsLinked to original sources
PubMed1996

An adoption study of DSM-IIIR alcohol and drug dependence severity.

OBJECTIVE: The objective of this study was to evaluate the role of genetic factors in alcohol and drug dependence at various levels of DSM-IIIR psychoactive substance dependence severity. METHOD: One-hundred-and-ninety-seven adoptees (95 case adoptees with biological parental alcoholism, drug dependence or antisocial personality disorder and 102 control adoptees) were interviewed for the presence of alcohol abuse or dependence and drug abuse or dependence using the Diagnostic Interview Schedule-DIS IIIR. RESULTS: Adoptees with five or more DSM-IIIR criteria for alcohol dependence demonstrated evidence of a genetic effect using this adoption paradigm (odds ratio = 2.3, 95% C.I. (1.1, 4.9)). Adoptees with one or more DSM-IIIR criteria for drug dependence demonstrated a genetic effect (odds ratio = 2.4, 95% C.I. (1.3, 4.4). CONCLUSIONS: This study suggests genetic factors influence the risk for alcohol and drug dependence at different thresholds of severity as determined by DSM-IIIR symptom severity count.

Adolescent↗
PubMed1996

Depression spectrum disease, I: The role of gene-environment interaction.

OBJECTIVE: This study used an adoption study design to separate genetic from environmental factors in the etiology of depression spectrum disease, a type of major depression characterized by families in which male relatives are alcoholic and females are depressed. The genetic etiology hypothesis of depression spectrum disease proposes that an alcoholic genetic diathesis predisposes to depression in females but alcoholism, not depression, in males. METHOD: The study examined 197 adult offspring (95 male and 102 female) of alcoholic biological parents and used logistic regression models to determine the contribution to major depression in male and female adoptees that could be explained by the genetic alcoholic diathesis combined with an environmental factor that was characterized by psychiatrically or behaviorally disturbed adoptive parents. RESULTS: Major depression in females was predicted by an alcoholic diathesis only when combined with the disturbed adoptive parent variable. The same regression model failed to predict depression in males. Other possible environmental confounding factors contributing to an increased chance of depression were found in females: fetal alcohol exposure, age at the time of adoption, and a family with an adopted sibling who had a psychiatric problem. These variables did not diminish the significance of the prediction of depression with the alcohol genetic diathesis and disturbed parent model. CONCLUSIONS: The results show that a genetic factor is present for which alcoholism is at least a marker, and which exerts its effect in women as a gene-environment interaction leading to major depression. This finding suggests that an important etiologic factor in depression spectrum disease is gene-environment interaction.

Adolescent↗
PubMed1995

Adoption study demonstrating two genetic pathways to drug abuse.

BACKGROUND: Studies of adoptees have demonstrated that there are two genetic factors leading to alcohol abuse and/or dependence (abuse/dependence). In addition, environmental factors found in the adoptive family also predict alcohol abuse/dependency independently. One study has found evidence that a similar model of two genetic factors and independent adoptive family factors were involved in drug abuse. Our study was designed to test the hypothesis that genetic factors defined by alcohol abuse/dependency and anti-social personality disorder in biologic parents were etiologic in drug abuse/dependency and that psychiatric problems in adoptive parents were an additional factor associated with drug abuse/dependence. METHODS: A sample of 95 male adoptees, separated at birth from their biologic parents, were followed up as adults to determine their psychiatric diagnosis and their substance use/abuse in a structured interview administered blind to biologic parent diagnoses. A high-risk, case-control design was used wherein half of the adoptees came from biologic parents known to be alcohol abuser/dependent and/or have antisocial personalities (diagnoses from hospital or prison records). These adoptees were matched for age, sex, and adoption agency to a control group of adoptees whose biologic parents were not found in the hospital and prison record search. Adoptive home environment was assessed by structured interviews, including psychiatric assessment of both adoptive parents. RESULTS: Data were analyzed by log-linear modeling, which showed evidence of two genetic pathways to drug abuse/dependency. One pathway went directly from a biologic parent's alcoholism to drug abuse/dependency. The second pathway was more circuitous, and started with anti-social personality disorder in the biologic parent and proceeded through intervening variables of adoptee aggressivity, conduct disorder, antisocial personality disorder, and, eventually, ended in drug abuse/dependency. Environmental factors defined by psychiatric conditions in adoptive families independently predicted increased antisocial personality disorder in the adoptee. Adoptees born of alcohol-abusing mothers showed evidence of fetal alcohol syndrome, but controlling for this did not diminish the evidence for the direct genetic effect between an alcohol-abusing biologic parent and drug abuse/dependency in offspring. CONCLUSIONS: This study confirms the model of two independent genetic factors involved in drug abuse/dependence and previous findings that disturbed adoptive parents are associated with adoptee drug abuse/dependency.

Adolescent↗
PubMed1995

Genetic-environmental interaction in the genesis of aggressivity and conduct disorders.

BACKGROUND: The purpose of this study was to determine the effect of an adverse adoptive home environment on adoptee conduct disorder, adult antisocial behavior, and two measures of aggressivity, all of which are behaviors that contribute to adult antisocial personality disorder and that also are associated with increased vulnerability to drug abuse and/or dependence. METHODS: The study used an adoption paradigm in which adopted offspring who were separated at birth from biologic parents with documented (by prison and hospital records) antisocial personality disorder and/or alcohol abuse or dependence were followed up as adults. They and their adoptive parents were interviewed in person. These adoptees were compared with controls whose biologic background was negative for documented psychopathologic behavior. Subjects were 95 male and 102 female adoptees and their adoptive parents. RESULTS: Multiple regression analysis was used to measure separately genetic and environmental effects. It showed that (1) a biologic background of antisocial personality disorder predicted increased adolescent aggressivity, conduct disorder, and adult antisocial behaviors, and (2) adverse adoptive home environment (defined as adoptive parents who had marital problems, were divorced, were separated, or had anxiety conditions, depression, substance abuse and/or dependence, or legal problems) independently predicted increased adult antisocial behaviors. Adverse adoptive home environment interacted with biologic background of antisocial personality disorder to result in significantly increased aggressivity and conduct disorder in adoptees in the presence of but not in the absence of a biologic background of antisocial personality disorder. CONCLUSIONS: Environmental effects and genetic-environmental interaction account for significant variability in adoptee aggressivity, conduct disorder, and adult antisocial behavior and have important implications for the prevention and intervention of conduct disorder and associated conditions such as substance abuse and aggressivity.

Adoption↗
PubMed1994

Evidence of heterogeneity of genetic effect in Iowa adoption studies.

This paper describes male adoption studies at the University of Iowa using private and public adoption agencies within the state of Iowa from 1974 to the present time. This research involves four large studies, the first two of which demonstrated significant genetic as well as environmental effects in the etiology of alcoholism as well as significant correlations between adoptee conditions of antisocial personality and alcohol abuse. Findings in the first two studies were similar. However, the third study, using a sample from Catholic-sponsored adoption agencies across the state, failed to show a genetic effect. The final and fourth study was designed in part to look for heterogeneity in the manifestation of a genetic factor from one sample to another in the Iowa studies. This was done by sampling from two agencies, one of which had shown a genetic effect and the other that had not. In this fourth study, the agency that had not shown a genetic effect in the previous study also failed to show an effect, but the agency that had shown a significant genetic effect in the past did demonstrate a significant genetic effect. There were two remaining agencies in the fourth study for which no comparison with past samples could be made. One of these agencies showed a marginally significant genetic effect and the other showed no effect. Statistical analysis of this last study suggested that observed variability in the odds ratio from sample to sample was due to differences in manifestation of the genetic effect.

Adoption↗
PubMed1990

Genetic and environmental factors in adoptee antisocial personality.

In a sample of 286 adult male adoptees 44 met criteria for antisocial personality (ASP). Two types of biologic parent background were associated with increased incidence of ASP in offspring: those with alcohol problem and those with a criminal conviction or adjudged delinquency. ASP adoptees were also significantly more likely to be alcoholic. Log linear modeling showed that alcohol problems in a biologic parent predicted increased alcohol abuse in the adoptee and that criminality/delinquency in a biologic parent predicted adult adoptee ASP. In the log-linear model two environmental factors significantly increased adoptee ASP: (1) placement in an adoptive home where there was an alcohol problem or antisocial behavior; and (2) placement in a lower socioeconomic home when the adoptee came from a background of criminality/delinquency in a biologic parent. When the adoptee did not have this biologic background socioeconomic level appeared to have little effect on ASP incidence. The results suggest the importance of genetic-environmental interaction in the genesis of adult ASP disorder.

Adoption↗
PubMed1988

Frequency of DSM-III personality disorders in patients with panic disorder: comparison with psychiatric and normal control subjects.

Three clinical populations--panic disorder (n = 88), randomly selected outpatients (n = 82), and normal control subjects (n = 40)--were compared on three standardized DSM-III personality disorder instruments, the Structured Interview for DSM-III Personality Disorders (SIDP), the Millon Clinical Multiaxial Inventory (MCMI), and the Personality Diagnostic Questionnaire (PDQ). Significant differences were consistently found in presence of "any" personality disorder and DSM-III Cluster C (there were always more disorders in the outpatients). Logistic regression analysis revealed the important determinants predicting personality disorders, and therefore of differences between groups, were state depression, age, lifetime history of alcohol abuse, and presence of panic disorder.

Adult↗
PubMed1988

Comparison of DSM-III personality disorders in recovered depressed and panic disorder patients.

A previous report using non-DSM-III measures indicated that recovered panic disorder and recovered major depressive patients have similar personality traits. To replicate this finding on DSM-III measures, 57 recovered panic, 19 recovered depressed, and 40 normal subjects were compared on standardized DSM-III personality measures. Virtually no differences were found between recovered major depression and recovered panic disorder patients. However, these two groups did differ from normal subjects in that they were more socially insecure and dependent.

Adult↗
PubMed1988

Specific familial transmission in substance abuse.

In contrast to studies on alcoholism, there is little documentation on familial transmission of drug abuse. This study was designed to determine whether specific familial transmission of substance abuse occurs: a greater incidence of drug abuse in probands with a family history of drug abuse than in those with a family history of alcoholism. Probands were 305 consecutively admitted patients to an inpatient chemical dependency treatment center, whose substance abuse/dependence diagnoses were based on DSM-III criteria and a structured interview. Family history data were obtained from each proband. Log linear analysis investigated the association between family and proband substance abuse. As abuse of nonalcoholic substances was significantly greater in probands with family histories of drug abuse, specific familial transmission is suggested.

Adult↗
PubMed1987

Suicide attempts in antisocial alcoholics.

The dual diagnoses of alcoholism and antisocial personality are frequently associated with suicide attempts. A group of 94 alcoholics with antisocial personality were divided on the basis of a previous suicide attempt. A variety of symptoms, including depression, alcohol and drug abuse, conduct disorder, and violence were found more frequently in the suicide attempter group as reported on the structured interview. These emotional problems were additionally found to have an earlier onset. The results were consistent with the concept of secondary sociopathy and indicated that higher psychopathology may be associated with suicide behavior.

Alcoholism↗
PubMed1987

Dependent personality disorder associated with phobic avoidance in patients with panic disorder.

Eighty-eight panic disorder patients were divided into three groups according to the extent of their phobic avoidance (none, limited, or extensive). These groups were compared on three personality disorder instruments: the Structured Interview for DSM-III Personality Disorders, the Personality Diagnostic Questionnaire, and the Millon Clinical Multiaxial Inventory. Phobic patients were found to have significantly more dependent personality disorder and DSM-III third-cluster personality disorders than nonphobic patients. A subgroup of patients with social phobic symptoms was found to resemble the rest of the phobic group in terms of personality.

Adult↗
PubMed1987

Genetic contributions to human fatness: an adoption study.

A strong relationship was found between the degree of fatness of biologic mothers and that of their adult offspring who had been separated from their mothers at birth and adopted during the first year of life. This relationship persisted even after age, height, and possible confounding environmental factors were controlled. There was little evidence for either selective placement on the basis of parental fatness or gene-environment interaction. There was no relationship between the degree of fatness of adoptive parents and that of the adoptees. Two indexes of environmental influence--rural upbringing and disturbance in the adoptive home--predicted fatness among adoptees.

Adipose Tissue↗
PubMed1987

Genetic and environmental factors in alcohol abuse and antisocial personality.

Previous analyses of adoptees from Lutheran Social Services of Iowa developed a multifactorial model of adoptee alcohol abuse that related abuse to three factors: biologic background of alcohol-related problems, biologic background of antisocial problems and exposure to an adoptive family where family members had alcohol-related problems. The present study examines an independently collected sample of adoptees from a different agency--the Iowa Children's and Family Services, and confirms the multifactorial model previously found in the Lutheran Social Service data. The model shows a specificity of type of inheritance and type of environmental influence: biologic family alcohol-related problems predict increased alcohol abuse in adoptee, biologic family antisocial behaviors predict increased antisocial personality diagnoses in adoptee, and environmental factors of alcohol-related problems in the adoptive family predict increased adoptee alcohol abuse.

Adoption↗
PubMed1986

An adoption study of genetic and environmental factors in drug abuse.

In a sample of 242 male and 201 female adoptees who had been separated at birth from biologic parents, adult adoptee diagnoses of alcohol abuse, drug abuse and antisocial personality were correlated with biologic and environmental factors. Three etiologic relationships with drug abuse were found: drug abuse was highly correlated with antisocial personality, which in turn was predicted from antisocial biologic background; a biologic background of alcohol problems predicted increased drug abuse in adoptees who did not have antisocial personalities; and environmental factors of divorce and psychiatric disturbance in the adoptive family were associated with increased drug abuse.

Adoption↗
PubMed1985

Alcoholism and antisocial personality. Interrelationships, genetic and environmental factors.

In a sample of 127 male and 87 female adult adoptees, antisocial personality and alcohol abuse were related to biologic backgrounds and to environmental factors. In the men, alcohol abuse was increased by a background of problem drinking in first-degree biologic relatives and by drinking problems in the adoptive home. Antisocial personality occurred more frequently in men whose first-degree biologic relatives had antisocial behavior problems. In the women, alcohol abuse was increased in adoptees whose first-degree relatives had problem drinking. Increased alcohol abuse in men and women was not predicted by biologic first-degree relatives with antisocial problems, nor did increased frequency of antisocial personality occur in adoptees with biologic relatives with problem drinking. The results suggest specificity of inheritance of antisocial and alcoholic conditions and the importance of environmental factors.

Adoption↗
PubMed1985

Genetic and environmental factors in major depression.

A study of 48 individuals with major depression in a sample of 443 adoptees has shown that depression is positively but not significantly correlated with a biologic background of affective disorder. Both primary and secondary depression was positively and significantly correlated with several environmental factors. In males, an adoptive home where another individual had an alcohol problem increased depression; in females, death of an adoptive parent prior to adoptee age 19 and an adoptive family where another individual had a behavior disturbance increased depression. Results suggest that the environmental factors occurring prior to adoptees age 18 predisposed to depression.

Adolescent↗
PubMed1983

Compliance characteristics of 291 hypertensive patients from a rural midwest area.

Patient compliance with treatment regimens has been a concern of both researchers and clinicians. Research studies on compliance have generally originated in large city clinics and teaching institutions. The results paint a dismal picture. The question is, are the compliance percentages found in the literature applicable to the hypertensive population in the semirural Midwest who receive long-term care from their family physician? This study was carried out in the practices of seven midwestern family physicians. The 291 patients in the study had a mean compliance percentage of 87 percent. By-product data indicate that outcome results were good. Research on compliance traditionally has conceived of the problem in large part as one of defective behavior by both the patient and the health care system. The physician-patient relationship in a family practice should contribute to better medication compliance. In this study semirural patients with hypertension who receive continuing care from their family physician had better compliance than national figures suggest it should have been.

Antihypertensive Agents↗