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P Beumont

Publications and source records attributed to P Beumont.

10 recordsLinked to original sources
PubMed2002

Anorexia nervosa (restrictive subtype) is associated with a polymorphism in the novel norepinephrine transporter gene promoter polymorphic region.

Long-term weight-restored patients with anorexia nervosa (AN) have lower norepinephrine levels than controls. Since this may reflect altered reuptake by the norepinephrine transporter (NET), we hypothesised that the NET gene was involved in the genetic component of AN. PCR-amplification of an AAGG repeat island (AAGG1) in the NET gene promoter region revealed a novel 343-bp sequence with five additional AAGG repeat islands (AAGG2-AAGG6). We named the sequence from AAGG1 to AAGG6 inclusive, the NET gene promoter polymorphic region (NETpPR). A 4-bp deletion (S4) or insertion (L4) in AAGG4 resulted in the net loss or gain, respectively, of a putative Elk-1 transcription factor site. The transmission disequilibrium test(TDT) with 87 Australian trios (patient plus parents) demonstrated significant preferential transmission of L4 (McNemar's chi(2) = 7.806, df = 1, P = 0.0052, odds ratio: 2.1) from parent to child with restricting AN (AN-R), suggesting that L4 or a DNA variant in linkage disequilibrium with it, doubles the risk for developing AN-R.

Adolescent↗
PubMed2000

Development of an instrument to assess readiness to recover in anorexia nervosa.

OBJECTIVE: The degree to which patients with anorexia nervosa demonstrate readiness to recover from their illness has received scant theoretical or empirical attention. Investigating the prevalence and degree of amotivation for recovery in anorexia nervosa, its role in outcome, and the effectiveness of interventions designed to enhance readiness to recover necessitates the existence of a reliable and valid measure of motivational issues relevant to the disorder. The present study aimed to develop and evaluate an instrument for assessing readiness to recover in anorexia nervosa, namely, the Anorexia Nervosa Stages of Change Questionnaire (ANSOCQ), a 23-item self-report questionnaire based on Prochaska and DiClemente's stages of change model. METHOD: Seventy-one inpatients with anorexia nervosa participated in the study. On several occasions during their admission, participants completed the ANSOCQ as well as questionnaires assessing readiness to recover, anorexic symptomatology, general distress, and social desirability. RESULTS: The ANSOCQ demonstrated good internal consistency (.90) and 1-week test-retest reliability (.89). Various aspects of validity were also supported, such as significant relationships with other instruments assessing readiness to recover and the prediction of weight gain during different periods of treatment. DISCUSSION: The results suggest that the ANSOCQ is a psychometrically sound instrument that may prove useful in investigating the role of readiness to recover in anorexia nervosa.

Adolescent↗
PubMed1994

Total body nitrogen as a predictor of clinical status in anorexia nervosa.

It has been demonstrated that clinical outcome is positively correlated with depletion of total body nitrogen (TBN) and therefore of body protein in certain serious medical conditions such as cystic fibrosis or patients receiving dialysis for chronic renal failure. Patients with anorexia nervosa are not suffering from medical illness per se yet the illness can be chronic and severely debilitating requiring numerous hospitalizations for refeeding and/or management of medical complications. The prediction of chronicity remains an important and difficult issue that this study seeks to address by examining the correlation between several clinical indices in 18 patients suffering from anorexia nervosa with parameters of body composition, namely TBN and percentage body fat. TBN was measured using the technique of in vivo neutron-activation analysis (IVNAA) and expressed as nitrogen index. Percentage body fat was estimated using skinfold measurements. The highest correlation was between nitrogen index and number of hospitalizations (r = -.80). The data support a relationship between depletion of body nitrogen/protein and chronicity in anorexia nervosa.

Adolescent↗
PubMed1993

Cognitive processes in dieting disorders.

This study is an empirical investigation of the prevailing notion that dieting disorder patients have more dysfunctional cognitions and cognitive styles than the nonclinical population. Groups of anorexics, bulimics, normal restrainers, and normal nonrestrainers completed three questionnaires and two repertory grids. Overall, the data supported a cognitive model of dieting disorders. Patients exhibited a lack of awareness of the role played by inner sensations in regulating weight and eating behavior, and emphasized black and white rules instead. Anorexic patients tended to evaluate self-worth almost entirely in terms of self-control. Both patient groups evidenced extreme negativity in their views of themselves, but anorexics showed a particularly severe sense of self-isolation. Unlike bulimics, they extended a tendency to think in absolute terms from the area of eating to the rest of their lives. Thus, the psychopathology of the anorexic patient group appeared more severe than that of bulimics.

Adult↗