Biomedical subjects

J G Johnson

Publications and source records attributed to J G Johnson.

At least 19 recordsLinked to original sources

PubMed2001

Childhood depression and adult personality disorder: alternative pathways of continuity.

BACKGROUND: This study extends previous findings of the risks posed by childhood major depressive disorder and other psychopathological features for later personality disorder (PD) in a random sample of 551 youths. METHODS: Self-reports and mother reports were used to evaluate DSM-III-R (Axes I and II) psychiatric disorders at mean ages of 12.7, 15.2, and 21.1 years. Logistic regression was used to examine the independent effects of major depressive disorder in childhood or adolescence on 10 PDs in young adulthood. RESULTS: Odds of dependent, antisocial, passive-aggressive, and histrionic PDs increased by more than 13, 10, 7, and 3 times, respectively, given prior major depressive disorder. Those effects were independent of age, sex, disadvantaged socioeconomic status, a history of child maltreatment, nonintact family status, parental conflict, preexisting PD in adolescence, and other childhood or adolescent Axis I psychopathological features, including disruptive and anxiety disorders. In addition, odds of schizoid and narcissistic PD increased by almost 6 times and odds of antisocial PD increased by almost 5 times given a prior disruptive disorder, and odds of paranoid PD increased by 4 times given a prior anxiety disorder. CONCLUSION: Personality disorders may represent alternative pathways of continuity for major depressive disorder and other Axis I disorders across the child-adult transition.

Adolescent↗

PubMed2001

Association of maladaptive parental behavior with psychiatric disorder among parents and their offspring.

BACKGROUND: A longitudinal study was conducted to investigate the role of maladaptive parental behavior in the association between parent and offspring psychiatric disorder. METHODS: Psychosocial and psychiatric interviews were administered to a representative community sample of 593 biological parents and their offspring from 2 counties in the state of New York in 1975, 1983, 1985 to 1986, and 1991 to 1993. In 1975, the offspring were a mean age of 6 years. Maladaptive parental behavior was assessed in 1975, 1983, and 1985 to 1986. Parent and offspring psychiatric symptoms were assessed in 1983, 1985 to 1986, and 1991 to 1993. RESULTS: Maladaptive parental behavior substantially mediated a significant association between parental and offspring psychiatric symptoms. Parents with psychiatric disorders had higher levels of maladaptive behavior in the household than did parents without psychiatric disorders. Maladaptive parental behavior, in turn, was associated with increased offspring risk for psychiatric disorders during adolescence and early adulthood. Most of the youths that experienced high levels of maladaptive parental behavior during childhood had psychiatric disorders during adolescence or early adulthood, whether or not their parents had psychiatric disorders. In contrast, the offspring of parents with psychiatric disorders were not at increased risk for psychiatric disorders unless there was a history of maladaptive parental behavior. CONCLUSIONS: Maladaptive parental behavior is associated with increased risk for the development of psychiatric disorders among the offspring of parents with and without psychiatric disorders. Maladaptive parental behavior appears to be an important mediator of the association between parental and offspring psychiatric symptoms.

Adolescent↗

PubMed2001

Health problems, impairment and illnesses associated with bulimia nervosa and binge eating disorder among primary care and obstetric gynaecology patients.

BACKGROUND: Although psychiatric patients with eating disorders are known to be at risk for a variety of health problems, relatively little is known about eating disorders and associated health problems in other populations. An epidemiological study was conducted to investigate health problems and impairment associated with bulimia nervosa (BN) and binge eating disorder (BED) among female primary care and obstetric gynaecology patients. METHODS: Psychiatric disorders, physical illnesses, disabilities, functional status and stress were assessed among 4651 female patients (age range:18 to 99 years) at 8 primary care and 7 obstetric gynaecology clinics throughout the United States. RESULTS: Two hundred eighty-nine women (62%) were diagnosed with BN or BED. The prevalence of BN was approximately 1% among young and middle-aged women. The prevalence of BED increased steadily from early (3.3%) through middle (8.5%) adulthood. Anxiety disorders, mood disorders and diabetes were much more common among women with BN or BED than among women without these eating disorders. Women with BN or BED reported markedly poorer functioning and much higher levels of disability, health problems, insomnia, psychosocial stress and suicidal thoughts than did women without BN or BED, after co-occurring psychiatric disorders were controlled statistically. Yet, fewer than one of ten cases of BN or BED was recognized by the patients' physicians. CONCLUSIONS: Patients with BN or BED often experience considerable disability, impairment, distress and co-occurring illnesses. Increased recognition of eating disorders may be a crucial step towards encouraging more patients to seek treatment for these disabling conditions.

Adolescent↗

PubMed2001

Hopelessness as a mediator of the association between social support and depressive symptoms: findings of a study of men with HIV.

Data from a prospective longitudinal study were used to investigate whether hopelessness mediates the association between social support and depression, as hypothesized by L. Y. Abramson, G. I. Metalsky, and L. B. Alloy (1989). Measures of hopelessness, social support, and depression were administered to 103 HIV-infected men and readministered 6 months later. Findings indicated that low baseline social support predicted increases in hopelessness and depression. Increases in hopelessness predicted increases in depression after controlling for baseline social support. Low baseline social support did not predict increased depression when hopelessness was controlled statistically.

Adult↗

PubMed2001

The effect of altering eligibility criteria for entry onto a kidney transplant waiting list.

BACKGROUND: This paper concerns the allocation of kidneys from cadaveric donors to patients with end-stage renal disease (ESRD). Currently, the decision as to whether or not a particular patient should go onto the renal transplant waiting list is left to the discretion of the local dialysis centre, and is usually based almost entirely upon consideration of each case on its individual merits. Would this person like to have a renal transplant, is this possible, and would it seem reasonable to give them a chance? It could be argued that such an approach may not make best use of a scarce national resource. In this study we explore the effects of altering the eligibility criteria for transplantation to take explicit and quantitative account of the fact that some patients are more likely to die than others. METHODS: We performed a survey of one unit's dialysis patients to ascertain the characteristics used in practice to determine who should go onto the transplant waiting list and who should not. We then created a computer model to simulate a cohort of ESRD patients, initially of the same size and characteristics as that in the unit surveyed, receiving renal replacement therapy over a period of 10 years. Using this model, we compared four strategies for defining eligibility for transplantation: (1) all patients eligible; (2) standard and medium risk patients eligible; (3) only standard risk patients eligible; and (4) no regrafts performed (standard and medium risk according to definitions in the Renal Association Standards Document). RESULTS: Strategies of allowing only standard or standard and medium risk patients onto the waiting list most closely reflected the current decisions made regarding eligibility. The different strategies considered in the models necessarily gave rise to very considerable variation in the size of the waiting list at the end of the 10 year period (range 98-368), which would have important practical implications. The predicted mean time of kidney function varied from 9.8 years for strategy 4 (no regrafts) to 10.8 years for strategy 3 (only standard risk patients eligible). However, the different strategies had very little effect on other parameters, such as numbers of deaths and the size of the dialysis population. CONCLUSIONS: Variation in decision making from centre to centre regarding access to renal transplantation could make up to a 10% (1 year) difference in the expected half-life of renal transplants performed. Information about recipient characteristics is therefore required when making comparisons between outcome in one transplant unit with that in another, or when comparing one immunosuppressive regime with another.

Data Collection↗

PubMed2001

Inter-generational longitudinal study of social class and depression: a test of social causation and social selection models.

BACKGROUND: Generations of epidemiologists have documented an association between low socio-economic status (SES) and depression (variously defined), but debate continues as to which is the causative factor. AIMS: To test the extent to which social causation (low SES causing depression) and social selection (depression causing low SES) processes are in evidence in an inter-generational longitudinal study. METHOD: Participants (n = 756) were interviewed up to four times over 17 years using the Schedule for Affective Disorders and Schizophrenia (SADS). RESULTS: Low parental education was associated with increased risk for offspring depression, even after controlling for parental depression, offspring gender and offspring age. Neither parental nor offspring depression predicted later levels of offspring occupation, education or income. CONCLUSION: There is evidence for an effect of parental SES on offspring depression (social causation) but not for an effect of either parental or offspring depression on offspring SES (social selection).

Adolescent↗

PubMed2001

Preliminary explorations of the effects of prior trauma and loss on risk for psychiatric disorders in recently widowed people.

BACKGROUND: This study compared the relative influence of childhood and adulthood adversities on current diagnoses of Major Depressive Episode (MDE), Post-Traumatic Stress Disorder (PTSD) and Traumatic Grief (TG) among recently widowed older adults. METHOD: Eighty-five widowed persons were interviewed at a median of 4 months after their loss. The logistic regression procedure was used to estimate the effects of three childhood adversities (parental death, abuse, death of a sibling) and three prior adulthood adversities (death of a child, non-bereavement traumatic event, death of a sibling) on current diagnoses of MDE, PTSD and TG. RESULTS: Adversities occurring in childhood (abuse and death of a parent) were significantly associated with TG and, secondarily, MDE, while adversities occurring in adulthood (non-bereavement traumatic event and death of a child) were only significantly associated with PTSD. The tendency of childhood adversities to predict TG and adult adversities to predict PTSD remained significant even after the clustering of adversities and comorbidity among psychiatric disorders were taken into account. CONCLUSIONS: The results suggest that there is a vulnerability to TG rooted in childhood experiences explicitly, with more recent traumas having a stronger influence on PTSD secondary to widowhood. The distinctive etiological risks for bereavement-related PTSD, MDE, and TG suggest that therapeutic approaches should be tailored to the particular syndrome(s) present.

Adaptation, Psychological↗

PubMed2000

Association between cigarette smoking and anxiety disorders during adolescence and early adulthood.

CONTEXT: Cigarette smoking is associated with some anxiety disorders, but the direction of the association between smoking and specific anxiety disorders has not been determined. OBJECTIVE: To investigate the longitudinal association between cigarette smoking and anxiety disorders among adolescents and young adults. DESIGN: The Children in the Community Study, a prospective longitudinal investigation. SETTING AND PARTICIPANTS: Community-based sample of 688 youths (51% female) from upstate New York interviewed in the years 1985-1986, at a mean age of 16 years, and in the years 1991-1993, at a mean age of 22 years. MAIN OUTCOME MEASURE: Participant cigarette smoking and psychiatric disorders in adolescence and early adulthood, measured by age-appropriate versions of the Diagnostic Interview Schedule for Children. RESULTS: Heavy cigarette smoking (>/=20 cigarettes/d) during adolescence was associated with higher risk of agoraphobia (10.3% vs 1.8%; odds ratio [OR], 6.79; 95% confidence interval [CI], 1.53-30.17), generalized anxiety disorder (20.5% vs 3.71%; OR, 5.53; 95% CI, 1.84-16.66), and panic disorder (7.7% vs 0.6%; OR, 15.58; 95% CI, 2.31-105.14) during early adulthood after controlling for age, sex, difficult childhood temperament; alcohol and drug use, anxiety, and depressive disorders during adolescence; and parental smoking, educational level, and psychopathology. Anxiety disorders during adolescence were not significantly associated with chronic cigarette smoking during early adulthood. Fourteen percent and 15% of participants with and without anxiety during adolescence, respectively, smoked at least 20 cigarettes per day during early adulthood (OR, 0.88; 95% CI, 0.36-2.14). CONCLUSION: Our results suggest that cigarette smoking may increase risk of certain anxiety disorders during late adolescence and early adulthood. JAMA. 2000;284:2348-2351.

Adolescent↗

PubMed2000

Psychiatric comorbidity associated with eating disorder symptomatology among adolescents in the community.

OBJECTIVE: This study investigates psychiatric comorbidity associated with eating disorder symptomatology among adolescents in the community. METHOD: Four hundred three adolescents in the community were administered structured clinical interviews to assess mood, anxiety, eating, substance use, and personality disorders. RESULTS: Adolescents with dysthymia, panic and major depressive disorder were significantly more likely than those without these disorders to have an eating disorder. After controlling for the effects of other Axis I disorders and personality disorders, only dysthymia independently predicted the presence of an eating disorder. Several personality disorders were also associated with eating disorder symptoms. However, only obsessive-compulsive personality disorder predicted eating disorder symptoms after controlling for other personality disorders. CONCLUSION: Although previous research on adults has focused on the association between major depressive disorder and eating disorders, dysthymia may be more strongly associated with eating disorders among adolescents in the community. This association is not accounted for by psychiatric comorbidity.

Adolescent↗

PubMed2000

Age-related change in personality disorder trait levels between early adolescence and adulthood: a community-based longitudinal investigation.

OBJECTIVE: To investigate change in personality disorder (PD) traits between early adolescence and early adulthood among individuals in the community. METHOD: PD traits were assessed in 1983 (mean age = 14), 1985-86 (mean age = 16) and 1992 (mean age = 22) in a representative community sample of 816 youths. RESULTS: Overall, PD traits declined 28% during both adolescence and early adulthood. PD traits were moderately stable during the first 2-year interval, and were as stable as they have been reported to be among adults over similar intervals. PD trait stability declined slightly as the inter-assessment interval increased. Adolescents with PDs tended to have elevated PD traits during early adulthood. CONCLUSION: PD traits tend to decline steadily in prevalence during adolescence and early adulthood. However, adolescents with PDs often have elevated PD traits as young adults, and the stability of PD traits appears to be similar during adolescence and early adulthood.

Adolescent↗

PubMed2000

Outpatient frozen sections by telepathology in a Veterans Administration medical center.

A relatively simple telepathology system is described for evaluating the margins of excision of cutaneous basal and squamous carcinomas. The system uses a microscope with a built-in television camera, but no eyepieces. The image is projected onto an adjacent monitor and transmitted by T1 line at 768 Kbs to a remote, large screen monitor. The microscope is operated by the surgeon under the telephone direction of the pathologist at the remote site. In a series of 66 cases involving more than 400 individual tissue blocks, we have had only 2 cases with false-negative interpretations and 2 in which the block was not fully displayed on the frozen section. In 15 cases, 1 or more surgical margins were positive, and the surgeon proceeded to excise additional tissue. Our success is attributed to dedicated involvement by the surgeon, very high-quality frozen sections, and the experience of the pathologist.

Ambulatory Surgical Procedures↗

PubMed2000

Transforming growth factor-beta type II receptors and smad proteins in follicular thyroid tumors.

OBJECTIVE: Resistance to transforming growth factor (TGF)-beta-mediated cell growth inhibition is a well-known pathogenic mechanism in epithelial neoplasia. TGF-beta signaling requires normal function of downstream mediators such as TGF-beta receptors (TbetaRs) and Smad proteins. The goal of this study is to investigate the expression of components of the TGF-beta signaling pathway in follicular tumors of the thyroid. STUDY DESIGN: Twenty follicular thyroid neoplasms were classified as adenomas (11) or minimally invasive follicular carcinomas (9) according to current pathological criteria. Protein expression was evaluated to identify differences between benign and malignant tumors that could be used as an adjunct to histopathological analysis. METHODS: Paraffin-embedded tissue sections containing tumor and adjacent nonneoplastic parenchyma were analyzed by immunohistochemistry for the expression of TbetaR type II (TbetaR-II) and Smad2, Smad4, Smad6, and Smad7. Expression of each protein in the tumor was compared with that of the corresponding adjacent nonneoplastic thyroid parenchyma. RESULTS: TbetaR-II expression was lost in 78% of the carcinomas. In the remaining 22%, TbetaR-II was preserved but Smad2 expression was lost. In all conventional adenomas, however, TbetaR-II expression was maintained. Furthermore, all tumors with normal expression of all proteins were adenomas. CONCLUSIONS: Downregulation of TbetaR-II is a consistent abnormality in follicular carcinomas and can be used to differentiate minimally invasive carcinomas from adenomas. Also, downregulation of Smad proteins is another mechanism by which carcinomas can become independent from TGF-beta-mediated growth inhibition.

Adenocarcinoma, Follicular↗

PubMed2000

Associations between bipolar disorder and other psychiatric disorders during adolescence and early adulthood: a community-based longitudinal investigation.

OBJECTIVE: The study investigated cross-sectional and longitudinal associations between bipolar disorder and other psychiatric disorders during adolescence and early adulthood. METHOD: Psychiatric interviews were administered to a representative community sample of 717 youths and their mothers in 1983 (mean age of youths=14 years) and again in 1985-1986, and 1991-1993. RESULTS: A wide range of psychiatric disorders co-occurred with bipolar disorder during adolescence and early adulthood. Adolescent anxiety disorders were uniquely associated with increased risk for early adulthood bipolar disorder after adolescent bipolar disorder was accounted for. Manic symptoms during adolescence were associated with increased risk for anxiety and depressive disorders during early adulthood after adolescent anxiety and depressive disorders were accounted for. CONCLUSIONS: Adolescents with anxiety disorders may be at increased risk for bipolar disorder or clinically significant manic symptoms during early adulthood. Adolescents with manic symptoms may be at increased risk for anxiety and depressive disorders during early adulthood.

Adolescent↗

PubMed2000

Adolescent personality disorders associated with violence and criminal behavior during adolescence and early adulthood.

OBJECTIVE: A community-based, longitudinal prospective study was conducted to investigate whether personality disorders during adolescence are associated with elevated risk for violent behavior during adolescence and early adulthood. METHOD: A community-based sample of 717 youths from upstate New York and their mothers were interviewed in 1983, 1985-1986, and 1991-1993. Axis I and II disorders were assessed in 1983 and 1985-1986. Antisocial personality disorder was not assessed because most participants were less than 18 years of age in 1983 and 1985-1986. Violent behavior was assessed in 1985-1986 and 1991-1993. RESULTS: Adolescents with a greater number of DSM-IV cluster A or cluster B personality disorder symptoms were more likely than other adolescents in the community to commit violent acts during adolescence and early adulthood, including arson, assault, breaking and entering, initiating physical fights, robbery, and threats to injure others. These associations remained significant after controlling for the youths' age and sex, for parental psychopathology and socioeconomic status, and for co-occurring psychiatric disorders during adolescence. Paranoid, narcissistic, and passive-aggressive personality disorder symptoms during adolescence were independently associated with risk for violent acts and criminal behavior during adolescence and early adulthood after the covariates were controlled. CONCLUSIONS: Cluster A and cluster B personality disorders and paranoid, narcissistic, and passive-aggressive personality disorder symptoms during adolescence may increase risk for violent behavior that persists into early adulthood.

Adolescent↗

PubMed2000

Difficulties in interpersonal relationships associated with personality disorders and axis I disorders: a community-based longitudinal investigation.

A longitudinal study was conducted to investigate the association between Axis I and Axis II psychiatric disorders, interpersonal relationships, and global functioning among men in the community. Structured clinical interviews assessing Axis I and Axis II psychiatric disorders, global assessments of functioning, and questionnaires assessing social support, social conflict, and loneliness were administered to a community sample of 95 HIV+ and 45 HIV- men. The questionnaires were readministered 1 year later. Results indicated that (a) Personality disorders (PDs) and unipolar depressive disorders were associated with loneliness, social conflict, and low levels of social support after HIV status was controlled statistically; (b) PDs were associated with interpersonal and global impairment after HIV status and co-occurring Axis I disorders were controlled statistically; (c) Axis I disorders were associated with global impairment, but were not associated with interpersonal difficulties after HIV status and PDs were controlled statistically; (d) PDs, but not Axis I disorders, predicted increases in social conflict and global impairment after HIV status was controlled statistically; (e) PDs continued to predict increases in global impairment after both Axis I disorders and HIV status were controlled statistically; and (f) HIV+ men reported more loneliness, less social support, and had a higher prevalence of substance use disorders than HIV- men. The present findings are of particular interest because they suggest that PDs are associated with loneliness, social conflict, and a lack of social support among men in the community, whether or not Axis I disorders are present.

Adult↗

PubMed2000

Self-defeating personality disorder reconsidered.

The objective of this study was to assess the distinctiveness, incremental validity, and gender bias of self-defeating personality disorder (SDPD) symptoms. A total of 441 nonclinical subjects completed personality disorder questionnaires. Structural equation modeling and regression analyses indicated that SDPD symptoms were distinctive, predicted impairment/distress beyond other personality disorder symptoms, and showed no gender bias. SDPD warrants reconsideration as a valid nosological category.

Adult↗

PubMed2000

Associations between four types of childhood neglect and personality disorder symptoms during adolescence and early adulthood: findings of a community-based longitudinal study.

Data from a community-based longitudinal study were used to investigate the association between childhood neglect and personality disorder (PD) symptom levels during adolescence and early adulthood. Psychosocial and psychiatric interviews were administered to a representative sample of 738 youths and their mothers from upstate New York in 1975, 1983, 1985-1986, and 1991-1993. Evidence of childhood cognitive, emotional, physical, and supervision neglect was obtained from the maternal interviews that were conducted in 1975, 1983, and 1985-1986, and from New York State records. PDs were assessed among the youths in 1985-1986, when they were adolescents, and in 1991-1993, when they were young adults. Findings indicated that childhood emotional, physical, and supervision neglect were associated with increased risk for PDs and with elevated PD symptom levels during adolescence and early adulthood, after age, sex, childhood physical or sexual abuse, other types of childhood neglect, and cooccurring PD symptoms were controlled statistically. Childhood emotional neglect was associated with increased risk for avoidant PD and with paranoid and Cluster A PD symptom levels during adolescence and early adulthood. Childhood physical neglect was associated with increased risk for schizotypal PD and with Cluster A PD symptom levels during adolescence and early adulthood. Childhood supervision neglect was associated with increased risk for passive-aggressive and Cluster B PDs and with borderline, paranoid, and passive-aggressive PD symptom levels during adolescence and early adulthood. The present findings suggest that childhood emotional, physical, and supervision neglect may play a role in the etiology of some PDs.

Adolescent↗

PubMed1999

Induction of primary human CD8+ T lymphocyte responses in vitro using dendritic cells.

The ability of two different human professional APCs, specifically macrophages (Mphi) and dendritic cells (DC), to stimulate primary responses in human CD8+ T lymphocytes was examined using both allogeneic and Ag-pulsed autologous APCs. CTL responses in CD8+ T lymphocytes isolated from HIV-uninfected donors were evaluated against six different HIV epitopes that are restricted by four different HLA alleles using autologous human PBMC-derived Mphi and DCs for primary stimulation. In a side-by-side experiment, immature DCs, but not Mphi, were able to prime a CTL response against the B14-restricted p24gag 298-306 epitope; mature DCs were also able to prime a response against this epitope. In addition, DCs were capable of priming CD8+ CTL responses against the B8-restricted p24gag 259-267 epitope. In contrast, Mphi were unable to prime strong CTL responses against other epitopes. Since the Ag-specific cytotoxic responses required subsequent rounds of restimulation before they could be detected, the ability of the allogeneic Mphi and DCs to directly prime CD8+ T lymphocyte responses without subsequent restimulation was examined. Similar to the aforementioned peptide-specific results, DCs were more efficient than Mphi in priming both allogeneic proliferative and cytotoxic responses in human CD8+ T lymphocytes. Collectively, these results promote an enhanced status for DCs in the primary stimulation of human CD8+ T lymphocytes.

CD8-Positive T-Lymphocytes↗