Dynamic headspace analysis of fresh tomato juices.

The methods used to isolate volatile compounds for GC analyses can cause profound effects on the quantitative and qualitative composition of the injected sample, and exert a great influence in the resultant bioactivity of volatiles. Especially with plant tissues like tomatoes, the isolation of volatile constituents using classical methods may yield results which are not representative of the chemicals present in the natural material. Headspace sampling methods may be advantageous in capturing the same volatile compounds emitted from tomatoes that are detected by the human nose. This study utilized an extremely sensitive dynamic headspace sampling with thermal desorption method to determine volatile components of fresh tomato juices. The method proved very sensitive for the isolation of tomato volatiles and concentrations of flavor compounds were much greater than related literature studies.

Involuntary treatment in anorexia nervosa.

It is difficult to predict, on first contact with patients with AN, whether a compulsory admission to hospital may become necessary to protect their lives and health. There are only tentative pointers so far to an entrenched avoidance of treatment: (1) components of a disordered personality associated with a history of childhood physical or sexual abuse or previous episodes of self-harm and (2) the presence of a more severe illness, suggested by numerous previous admissions. An involuntary admission is likely to be beneficial at least in the short term, as shown by a gratifying weight gain, although a longer period of inpatient stay may be necessary. Patients who have required compulsory detention are at a considerable risk in the long-term as shown by their high mortality rates. It is, therefore, essential to organize long-term observation for all patients who required involuntary admission for AN. A compulsory admission for AN does not require compulsory treatment, such as forced feeding by NGT or other intrusive methods. Clinicians who contemplate a compulsory admission for a seriously ill anorexic patient might therefore question the advantages provided by the detention. First, clinicians can be assured that it should be possible to induce a satisfactory weight gain through persistent nursing methods without running the risk of these patients discharging themselves. With inpatients, the goals are nearly always attained, although the admission may be longer than average. Not only do these patients' nutrition improve vastly, but also they are likely to show improvements in their mental state. Secondly, these patients are likely to learn that the professional staff, their families, and outside agencies take their illness very seriously, even if patients themselves do not seem to. This is particularly evident when patients appeal to a Mental Health Review Tribunal for release. They attend the proceedings and hear the evidence presented by their psychiatrists, the nursing staff, and their nearest relatives. The tribunal usually sustains the compulsory admission: the patient may be initially distressed, but in the long run the experience is generally therapeutic. Finally, compulsory admission permits more stringent forms of supervision. For example, patients who vomit may have legitimately restricted access to bathrooms. Patients addicted to exercise may be rationed to sensibly short periods of walking daily. Patients who are extremely anxious or overactive may be required to take appropriate tranquilizing or sedating drugs, such as one of the benzodiazepine drugs. Clinicians sometimes are reluctant to resort to compulsory admission because of a fear of damaging the therapeutic relationship with their patients. Clinical observations, however, point to the converse being the case, as shown in several studies. Tiller et al maintain: "Compulsory treatment may be an act of compassion: it shows that professionals recognize the severity of the illness and that they are prepared to contain the anxieties provoked by weight gain. Often the patients and their families are immensely relieved to hand over the responsibility, temporarily, to the professional team."

Metabolic abnormalities associated with skeletal myopathy in severe anorexia nervosa.

The aim of this study was to characterize the metabolic disturbance associated with the skeletal myopathy resulting from extreme weight loss in anorexia nervosa. Muscle function was examined in eight female patients with severe (40%) weight loss due to anorexia nervosa and histologically confirmed myopathy. A wide range of biochemical and hematologic investigations were carried out, including serum enzymes and the response of plasma lactate to ischemic exercise of forearm muscles. All patients showed proximal muscular weakness. A diminished lactate response to ischemic exercise was a consistent finding, and a reduction of serum carnosinase activity was also found. There were no other consistent biochemical or hematologic abnormalities apart from lymphopenia of no clinical consequence. These findings contribute to our understanding of severe protein-energy malnutrition on the musculoskeletal system. The resulting disorder is a metabolic myopathy from which the patients recover rapidly as their nutrition improves. Although the patients admitted to a variety of abnormal eating behaviors, no correlation was found between a specific type of abnormal eating behavior and subsequent biochemical abnormalities. Reinstating appropriate eating behavior will treat the myopathy.

Carnitine levels in patients with skeletal myopathy due to anorexia nervosa before and after refeeding.

OBJECTIVE: To assess the role of carnitine in the skeletal myopathy present in anorexia nervosa. METHOD: Serum levels of free and total carnitine were measured in a group of severely underweight women with anorexia nervosa and skeletal myopathy before and after an inpatient refeeding program. RESULTS: Carnitine levels were within the reference range before refeeding and remained unchanged despite significant weight gain in all the subjects. CONCLUSION: These findings suggest that carnitine plays no part in the muscle weakness seen in severe anorexia nervosa.

Compulsory treatment in anorexia nervosa. Short-term benefits and long-term mortality.

BACKGROUND: Anorexia nervosa is a mental disorder with a high long-term mortality. Patients are ambivalent about treatment and often avoid it. Of necessity, compulsory treatment sometimes must be considered. A report from the Mental Health Act Commission has helped to reduce previous confusion. AIMS: To identify the premorbid and clinical features that predisposed to compulsory admissions, the short-term benefits of the treatment and the long-term mortality rates (derived from the National Register). METHOD: Eighty-one compulsory patients were compared with 81 voluntary patients. RESULTS: Predisposing factors to a compulsory admission were a history of childhood sexual or physical abuse or previous self-harm. Detained patients had more previous admissions. Detained patients gained as much weight during admission as voluntary patients, but took longer. More deaths among compulsory than voluntary patients (10/79 v. 2/78) were found 5.7 years (mean) after admission. CONCLUSIONS: Compulsory treatment is effective in the short term. The higher long-term mortality in the detained patients is due to selection factors associated with an intractable illness.

Structural and functional changes in skeletal muscle in anorexia nervosa.

Protein-energy malnutrition in anorexia nervosa is an under-recognised cause of muscle dysfunction. To characterise the skeletal myopathy that occurs in patients with severe anorexia nervosa, muscle function and structure were comprehensively examined in eight young adult female patients with severe (40%) self-induced weight loss. All of the patients showed impaired muscle function on strength and exercise measurement. The maximum voluntary contraction force for the patient group was significantly less than predicted values. Electromyography revealed myopathy in five of the patients, four of whom also had electro-physiological evidence of neuropathy. However, muscle biopsy specimens consistently showed myopathic changes with severe type 2 fibre atrophy but with no evidence of neuropathic changes. Ultrastructurally, there was separation and segmental loss of myofibrils and most biopsy samples contained abundant glycogen granules; we have previously reported that one of the most consistent biochemical abnormalities in these patients is impaired ischaemic lactate responses to forearm exercise. The result of severe protein-energy malnutrition on the musculo-skeletal system is a metabolic myopathy. Although the patients admitted to a variety of abnormal dieting behaviours, such as over-exercising and self-induced vomiting, no association was found between any of these and quantitative histological changes in the muscle biopsy samples. It is recommended that myopathy in anorexia nervosa be treated by instituting an appropriate refeeding programme.

Mothers with anorexia nervosa who underfeed their children: their recognition and management.

BACKGROUND: Women with anorexia nervosa have a reduced fertility but they may have borne children before the onset of their illness or after partial recovery. Little is known on how to identify the anorexic mothers who underfeed their children and how to manage them. This article aims to remedy these gaps. METHODS: The clinical scientific method is the only means of identifying the children of anorexic mothers who are at risk. Eight such mothers were identified as a result of obtaining serial measurements of the children's weights and heights over time. Tanner-Whitehouse charts were used to plot weight for age and height for age. A simple rating scale was devised to measure the acceptance of treatment involving both mother and child. RESULTS: Nine children (eight boys and one girl) were found to have suffered food deprivation: with severe reduction in weight-for-age in six and in height-for-age in eight. Five siblings were not affected. Catch-up growth was correlated with the degree of engagement in treatment of both mother and child. Long-term treatment of one mother, combining family therapy with admissions to hospital, resulted in catch-up growth in her two sons. CONCLUSIONS: The mechanisms underlying the privation of the children stem from the anorexic mother's abnormal concerns with body size extending to her children. The children may become unduly accepting of the underfeeding. It is essential to obtain the confidence of anorexic mothers suspected of underfeeding their children and to adopt a whole family approach to treatment.

Family and individual therapy in anorexia nervosa. A 5-year follow-up.

BACKGROUND: There is evidence that specific psychological treatments are effective in patients with eating disorders. Our goal was to determine by means of a controlled trial whether psychological treatments, previously found to be effective in anorexia nervosa, gave rise to enduring benefits. METHODS: A 5-year follow-up was conducted on patients who had participated in a previous trial of family therapy for anorexia and bulimia nervosa. Family therapy or individual supportive therapy had been administered to 80 outpatients for 1 year beginning on discharge from hospital after weight restoration. The 80 patients had been subdivided into 4 prognostically homogeneous groups of which 2 turned out to be the most important: patients with early onset and short history of anorexia nervosa, and patients with late-onset anorexia nervosa. At the 5-year follow-up, the efficacy of the outpatient therapies was again assessed by the maintenance of weight, and the categories of general outcome and dimensions of clinical functioning defined by the Morgan-Russell scales. RESULTS: Significant improvements were found in the group of 80 patients as a whole, mainly attributable to the natural outcome of anorexia nervosa, and most evident in the early onset and short history group, as expected. Within 2 of the prognostic groups, significant benefits attributable to previous psychological treatments were still evident, favoring family therapy for patients with early onset and short history of anorexia nervosa and favoring individual supportive therapy for patients with late-onset anorexia nervosa. CONCLUSIONS: Much of the improvements found at a 5-year follow-up can be attributed to the natural outcome of the illness. Nevertheless, it was still possible to detect long-term benefits of psychological therapies completed 5 years previously.

Serotonin activity in anorexia nervosa after long-term weight restoration: response to D-fenfluramine challenge.

Abnormalities in central serotonin function have been implicated in the pathogenesis of anorexia nervosa. It is difficult, however, to separate neuroendocrine abnormalities induced by weight loss and malnutrition from those related primarily to the disorder itself. To minimize these influences, this study assessed long-term weight restored anorexics. A correlation between persistent eating-related psychopathology, co-morbid illness and serotonin dysfunction was sought. Nine female weight-restored out-patients who had previously fulfilled DSM-III-R criteria for anorexia nervosa and nine healthy controls participated. Following baseline estimation, prolactin and cortisol responses to 30 mg p.o. of D-fenfluramine were measured over a 5 h period. Eating related psychopathology was assessed using the Eating Disorders Inventory and Eating Attitudes Test. Depressive and obsessional symptoms were measured using the Beck Depressive and Maudsley Obsessive-Compulsive Inventories respectively. The Tridimensional Personality Questionnaire assessed impulsivity. The weight-restored anorexic group exhibited persistent eating-related psychopathology and significant co-morbid symptomatology. There was no difference between long-term weight-restored anorexics and controls in their endocrine response to D-fenfluramine. Long-term weight-recovered anorexic subjects continued to exhibit behavioural and attitudinal disturbances characteristic of anorexia nervosa. The results suggest that abnormalities in 5HT activity do not contribute significantly to trait status in anorexia nervosa.

Chemoreception and perception of the bitterness of isohumulones.

Psychophysical experiments were conducted to determine whether isohumulones share a common receptor mechanism with other bitter compounds, and whether parotid saliva flow affects perception of their bitterness. Findings from a study of inter-individual differences in sensitivity to 23 sweet and/or bitter compounds among 25 subjects using the time-intensity (TI) method suggest that isohumulone and tetrahydroisohumulone may share a common receptor mechanism with other bitter compounds except those with the thiourea moiety. Isohumulone and tetrahydroisohumulone displayed a unique dome-shaped TI profile. The bitterness of the two compounds took longer to develop, but it lasted as long as for other bitter stimuli. In a study of the relation between perception of bitterness in beer and parotid saliva flow in 20 young adults, no significant difference was found among the mean saliva flows triggered by 0, 15 and 30 mg/L of isohumulones added to beer, and no significant correlation was found between saliva flow and maximum intensity or total duration of bitterness.

Neuromyopathic complications in a patient with anorexia nervosa and vitamin C deficiency.

A 19-year-old female patient with anorexia nervosa developed profound weight loss over 1 year associated with vegetarianism and excessive exercise. There was severe wasting and proximal muscle weakness in the legs and bilateral weakness of eye closure. A purpuric rash developed due to vitamin C deficiency. This case demonstrates a new neurological sign in anorexia nervosa indicating a weakness of the orbicularis oculi muscles as part of a more general myopathy. The myopathic and scorbutic features may have a common pathogenesis.

Outcome and prognostic variables in bulimia nervosa.

The purpose of this paper is to examine the factors that influence treatment response and outcome in 39 patients with bulimia nervosa who were assessed during the course of 8 weeks of cognitive-behavioral therapy, and after an 8-week and 1-year follow-up period. The patients' progress was assessed using data gathered from clinical examination, structured interviews, and self-rating scales. Patients who had a poor clinical response at the end of treatment had greater pretreatment symptom severity, lower body mass index, and were more likely to have personality disorders. Poor response after 1 year was associated with personality disorder, pretreatment symptom severity, and longer duration of illness. Patients without these poor prognostic indicators are more likely to respond to brief psychoeducational interventions. Patients with poor prognostic indicators are more suited to intensive psychological, pharmacologic, and experimental treatment approaches.

Personality disorder and treatment response in bulimia nervosa.

Thirty-nine female out-patients with bulimia nervosa were assessed for personality disorders using the PAS. All subjects then entered a therapeutic trial, comprising eight weeks of cognitive-behavioural therapy with follow-up after eight weeks and at one year. Thirty-nine per cent of the patients were diagnosed as having personality disorders. Patients with personality disorders were more depressed and had a lower BMI than those without. They also had a significantly poorer response to treatment, but the difference between groups did not reach significance when mood and BMI were controlled for. Personality disorder alone does not predict a poor response to treatment, but comorbidity with depression and low weight increases the likelihood of a poor response; these patients are unlikely to respond to brief psychotherapeutic interventions.

A placebo-controlled trial of d-fenfluramine in bulimia nervosa.

d-Fenfluramine is a 5-HT agonist which decreases food intake and excessive carbohydrate intake in humans. A placebo-controlled trial of d-fenfluramine (45 mg/day) was conducted in 43 patients with bulimia nervosa. The patients entered an eight-week trial of medication during which they also received cognitive-behavioural therapy. Treatment response was assessed using food diaries to record eating behaviour, and self-rating questionnaires to measure psychopathology. The drug trial, and a follow-up assessment after a further eight weeks, were completed by 39 patients. Abnormal eating behaviour and psychopathology improved significantly in both the d-fenfluramine and placebo groups during the treatment trial. The study failed to show that the addition of d-fenfluramine affords an advantage over brief psychotherapy alone. Although d-fenfluramine is effective in suppressing the overeating, excessive snacking, and excessive carbohydrate consumption which are frequently found in overweight or obese patients, this study suggests that the drug is not an effective treatment for bulimia nervosa.

The clinical relevance of salivary amylase monitoring in bulimia nervosa.

The aim of this study was to evaluate the clinical relevance of amylase level monitoring as an objective measure in diagnosis and assessment of treatment response in bulimia nervosa. Thirty-three subjects who fulfilled DSM-111-R criteria for bulimia nervosa had serum levels of total and salivary amylase monitored during an 8-week treatment trial. At the beginning of treatment, the average total amylase level was within the upper limits of normal, whereas average salivary amylase levels were abnormally high. During the course of treatment, there was a significant reduction in the average salivary isoenzyme to within the normal range. Significant reductions in amylase levels were recorded in patients with good treatment outcome, but not in those with poor outcome. Amylase levels were not significantly correlated with severity of bulimic symptoms. These results do not justify the use of amylase assays as a routine diagnostic or monitoring test, but isoenzyme monitoring may provide useful clinical information in selected cases.

Anorexia nervosa: outcome and prognostic factors after 20 years.

Forty-one patients with anorexia nervosa, admitted to the Maudsley Hospital between 1959 and 1966, were followed up after a mean of 20 years. An assessment of general outcome (based on the Morgan-Russell scales) yielded three outcome categories: 'good' (n = 12), 'intermediate' (n = 13) and 'poor' (n = 15). Six patients (15%) had died from causes related to anorexia nervosa; at least 15% had developed bulimia nervosa. There was a general consistency between the follow-up at 20 years and that previously conducted five years after admission, although with a few individual patients there were serious prognostic errors at the earlier follow-up. A poorer outcome was associated with a later age of onset, a history of neurotic and personality disturbances, disturbed relationships in the family and a longer duration of illness.

Anorexia nervosa and baby gazing.

The uncommon behaviour of baby gazing is described in a patient who had also suffered three episodes of anorexia nervosa. The baby gazing responded to joint therapeutic interviews leading to the patient and her husband resolving their different views about having a family and the patient becoming pregnant. Even then there was a minor recurrence of anorexic behaviour which yielded to treatment.

The effects of loss of taste and smell in a case of anorexia nervosa and bulimia nervosa.

A woman with a mixed eating disorder is reported. Her disorder did not remit after a head injury which caused her to lose her sense of taste and smell.

Weight gain and reproductive function: ultrasonographic and endocrine features in anorexia nervosa.

Pelvic ultrasonographic measurements and reproductive hormone levels in 36 patients with anorexia nervosa were followed as they gained weight during inpatient treatment. In 24 patients who were severely malnourished (69% of premorbid weight) the ovaries were small and amorphous and the levels of LH, FSH and oestradiol were very low. Weight gain led to the appearance of multifollicular ovaries when levels of LH and oestradiol remained low but FSH levels had increased resulting in an LH:FSH ratio of less than 1. The emergence of a dominant follicle in 19 patients after weight gain (to 97% of premorbid weight) was accompanied by an increase in uterine area and associated with increased levels of LH and oestradiol and an LH:FSH ratio greater than 2. Among these patients with a dominant follicle at peak weight, 11 menstruated within a month of discharge. The weight at which normal ovarian morphology returned was related to premorbid weight (P less than 0.002) whereas body mass index (BMI) was poorly related. Our findings suggest that pelvic ultrasonography is probably the best indicator of the weight required for full endocrine recovery and offers advantages over sequential hormonal measurements, and is valuable in the management of patients with anorexia nervosa.