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PubMed2003

Cues for apoptotic cell engulfment: eat-me, don't eat-me and come-get-me signals.

Efficient elimination of cells undergoing programmed cell death is crucial for normal tissue homeostasis and for the regulation of immune responses. This review examines unique signals presented by apoptotic cells and the mechanisms by which phagocytes recognize and respond to these signals to orchestrate the selective and rapid removal of apoptotic cells. Such unique signals include direct and indirect 'eat-me' markers on the apoptotic cell surface, the absence of 'don't eat-me' markers normally found on living cells and soluble 'come-get-me' signals secreted by apoptotic cells to attract phagocytes to sites of apoptotic cell death. Once apoptotic cells are identified, their uptake by phagocytes further depends on the molecular machinery highly conserved from Caenorhabditis elegans to mammals.

Animals↗
PubMed2003

"Eat me" and "don't eat me" signals govern the innate immune response and tissue repair in the CNS: emphasis on the critical role of the complement system.

A full innate immune system (e.g. complement system, scavenger receptors, Toll-like receptors (TLR)) has been described in the CNS and is thought to be an extremely efficient army designed to fight against invading pathogens and toxic cell debris such as apoptotic cells and amyloid fibrils. The binding of soluble or secreted innate immune molecules on pathogen-associated molecular patterns (PAMPs) as well as apoptotic cell-associated molecular patterns (ACAMPs) provide several "eat me" signals to promote the safe disposal of the intruders by professional and amateur phagocytes. These patterns are deciphered by receptors (pattern recognition receptors, PRRs; e.g. CR3) that control phagocytosis and associated inflammatory response depending on the meaning of these signals. Importantly, in order to avoid excessive collateral damage of surrounding cells, it is increasingly evident that "don't eat me" signals (coined herein as self-associated molecular patterns, SAMPs; e.g. complement regulatory proteins, CD200) are of paramount importance to signal a robust anti-inflammatory response and promote tissue repair. Further knowledge of the innate immune response in the CNS will greatly help to delineate the novel therapeutic routes to protect from CNS inflammation and neurodegeneration.

Animals↗
PubMed2001

Changes in eating self-efficacy and body image following cognitive-behavioral group therapy for binge eating disorder: a clinical study.

Binge eating disorder (BED) is a frequent and significant psychiatric comorbidity among individuals seeking treatment for obesity. Cognitive-behavioral therapy (CBT) is frequently recommended for the treatment of obese individuals with BED. However, there is limited investigation into the effectiveness of the specific components of CBT. In this study, we examine the impact of CBT for BED in obese women on self-efficacy for eating behavior and body image issues. Participants were 12 obese women who participated in a 15-week CBT group program. As predicted, results indicated a reduction in binge episode frequency and significant improvements in self-efficacy and body image pre- and posttreatment. These findings support the premise that a structured cognitive-behavioral group treatment program for obese individuals with BED will promote changes in self-efficacy and body image.

Journal Article↗
PubMed2006

Weight gain over 5 years in 21,966 meat-eating, fish-eating, vegetarian, and vegan men and women in EPIC-Oxford.

BACKGROUND: Cross-sectional studies have shown that vegetarians and vegans are leaner than omnivores. Longitudinal data on weight gain in these groups are sparse. OBJECTIVE: We investigated changes in weight and body mass index (BMI) over a 5-year period in meat-eating, fish-eating, vegetarian, and vegan men and women in the UK. DESIGN: Self-reported anthropometric, dietary and lifestyle data were collected at baseline in 1994-1999 and at follow-up in 2000-2003; the median duration of follow-up was 5.3 years. SUBJECTS: A total of 21,966 men and women participating in Oxford arm of the European Prospective Investigation into Cancer and Nutrition aged 20-69 years at baseline. RESULTS: The mean annual weight gain was 389 (SD 884) g in men and 398 (SD 892) g in women. The differences between meat-eaters, fish-eaters, vegetarians and vegans in age-adjusted mean BMI at follow-up were similar to those seen at baseline. Multivariable-adjusted mean weight gain was somewhat smaller in vegans (284 g in men and 303 g in women, P<0.05 for both sexes) and fish-eaters (338 g, women only, P<0.001) compared with meat-eaters. Men and women who changed their diet in one or several steps in the direction meat-eater --> fish-eater --> vegetarian --> vegan showed the smallest mean annual weight gain of 242 (95% CI 133-351) and 301 (95% CI 238-365) g, respectively. CONCLUSION: During 5 years follow-up, the mean annual weight gain in a health-conscious cohort in the UK was approximately 400 g. Small differences in weight gain were observed between meat-eaters, fish-eaters, vegetarians and vegans. Lowest weight gain was seen among those who, during follow-up, had changed to a diet containing fewer animal food.

Adult↗
PubMed2001

Eat to live or live to eat? Do parents and children agree?

UNLABELLED: The lifestyles and diets of children in developed countries is changing rapidly in response to the social and cultural climate, as well as the availability of an increasing range of foods. The aim of this on-going study is to assess the trends in food-related behaviours of children and their attitudes towards food and nutrition. The study also monitors markers for physical activity, which have been presented elsewhere (Bellisle et al, 2000). Three successive surveys (1993, 1995, and 1997) were carried out on samples of 1000 French children aged 9--11 years and their mothers. RESULTS: Attitudes towards food varied markedly between children and their mothers. Children viewed food primarily as a necessity of life, whereas mothers viewed food primarily as a pleasure for their child, with necessity and nutrition given a lower importance. Contrary to popular belief children's enjoyment of 'unhealthy' and 'healthy' foods was similar. French-fries were the favourite food for 92% of children, closely followed by pasta (89%). Fruit and candy received similar scores (82% and 81% respectively), suggesting that external factors such as convenience are the prime barrier to fruit consumption rather than the enjoyment factor. Over the three surveys a strong persistence of the traditional French meal pattern has been demonstrated, with breakfast, lunch and evening meals eaten by 97%, 96% and 99% of children respectively. One increasing occurrence is the viewing of television during meal times with 25% of breakfasts, 46% of afternoon snacks and 41% of evening meals consumed in front of the television. Children's attitudes towards food demonstrated an overwhelming trust of their mother and her ability to provide them with nourishing foods. Mothers often found it difficult to reconcile the demands of family life, employment, healthy eating and the maintenance of a pleasurable atmosphere at mealtimes. CONCLUSIONS: Overall, children and mothers appeared to have divergent attitudes towards food. An understanding of children's enjoyment of foods considered more 'healthy' or less 'healthy' enables effective nutrition messages to be developed for children. However, further work is needed to explore the long-term impact of mothers' attitudes towards food and mealtimes on a child's relationship to food and eating habits during adolescence through to adulthood.

Adult↗
PubMed2000

Assessment of eating behaviours and attitudes to eating, dieting and body image in pre-adolescent Swedish girls: a one-year follow-up.

UNLABELLED: A 1-y follow-up of fifty 8-y-old Swedish girls was performed to assess changes in eating attitudes and dieting behaviour. Individual structured interviews using the Children's Eating Attitudes Test (ChEAT) and Body Image silhouettes were used. The question, "Have you ever tried to lose weight?" was employed to discriminate dieters from non-dieters. Dieting behaviours according to the ChEAT increased over the follow-up period. CONCLUSION: Discrimination between dieters and non-dieters on the basis of a single question is highly unstable. A classification based on repeated assessment appears to be more promising.

Attitude↗
PubMed1979

Effects of an observer on eating behavior: the induction of "sensible" eating.

An experiment was conducted to investigate the extent of caloric compensation to differential preloading among normally restrained and unrestrained female subjects. Subjects' eating was either explicitly observed or unobserved by the experimenter. Unrestrained eaters compensated appropriately for the preload, whether or not they were observed. Restrained eaters failed to compensate when unobserved , but compensated strongly when observed. A subsequent unobserved eating task revealed that restrained eaters failed to compensate for prior consumption when the observer was withdrawn. Implications for research and therapy are discussed.

Awareness↗
PubMed1979

Effects of a model on eating behavior: the induction of a restrained eating style.

An experiment was conducted to assess the effects of a same-sex model on females' eating behavior. The model ate either a large or small quantity along with the subject in an ad lib satiation context, and either did or did not identify herself as a dieter. Subjects were 86 female undergraduates, split into normally dieting or nondieting subgroups. Number of sandwich quarters consumed ad lib following a small fixed preload was found to vary as a function of (a) model's consumption (b) model's dieter status and (c) subject's dieter status; there were no significant interactions. A subsequent taste-rating assessment of nut consumption, in which the model was present but could neither see nor be seen by the subject, indicated that the three factors which had previously affected sandwich consumption independently combined to affect nut consumption interdependently. The results were interpreted in terms of the effect of the model on the quantity and pattern of consumption, and conclusions were drawn about the dynamics of restrained and unrestrained eating and implications for therapy.

Behavior Therapy↗
PubMed2003

Psychometric properties of the eating disorders inventory-2 among women seeking treatment for binge eating disorder.

Psychometric properties of the Eating Disorders Inventory-2 (EDI-2) when used for women with Binge Eating Disorder (BED) are assessed. The EDI-2 was administered to 144 outpatients seeking treatment for BED and 152 outpatients seeking treatment for Bulimia Nervosa (BN). Most EDI-2 scales had acceptable internal consistence for both the BED and BN samples. EDI-2 scales demonstrated adequate stability within a subsample of those with BED who were retested. Confirmatory factor analyses revealed a hypothesized second-order two-factor structure for the original EDI scales for the BED group but not for those with BN. When the provisional EDI-2 scales were included, a two-factor structure was not supported for any group. Some scales differentiated the BED from the BN sample, and the second-order factors correlated with measures of similar constructs. The original EDI scales can be used reliably for those with BED.

Adult↗
PubMed2003

A twin study of dietary restraint, disinhibition and hunger: an examination of the eating inventory (three factor eating questionnaire).

The Eating Inventory (EI) is commonly used to measure a range of eating behaviors. It includes three subscales: Cognitive Restraint, Hunger, and Disinhibition. In this study, we decomposed the variance of the three subscales, and evaluated the genetic, common environment and specific environmental effects on each in a sample of female-female twin pairs. Multivariate models were also used to examine whether the EI represented three individual factors, or whether there was extensive covariance among subscales. Heritabilities were estimated at 45% (CI of 32-57%) for Disinhibition, 8% (CI of 0-38%) for Hunger, and 0% (CI of 0-30%) for Restraint. Common environmental influences were estimated at 0% (CI of 0-23%) for Disinhibition, 16% (CI of 0-34%) for Hunger, and 31% (4-42%) for Restraint. Specific environmental influences accounted for the rest of the variance of the subscales. However, multivariate modeling indicated that Disinhibition and Hunger covaried significantly, indicating that these two subscales are influenced by the same set of genetic factors. Furthermore, Restraint appeared to be empirically distinct from Hunger or Disinhibition.

Adult↗
PubMed1992

Anthropometric, psychomotor, and hemodynamic changes during twenty-one continuous days of eating only meals, ready-to-eat (MREs).

This study investigated anthropometric, psychomotor, and hemodynamic changes in young adult men during 21 continuous days of eating only meals, ready-to-eat (MREs). The MRE diet group lost more weight and bodyfat (significant at abdominal site, total skinfolds, and total bodyfat percent), and had significantly greater gains in hand grip strength than did controls. Results support the contention that, when eaten as designed, MREs are nutritionally adequate for maintaining body weight and muscle strength without adverse effects.

Adult↗
PubMed2006

To eat or not to eat; regulation by the melanocortin system.

The central melanocortin (MC) system is one of the best-characterized neuropeptidergic systems involved in the regulation of energy balance. This short review describes the role of the central MC system in feeding behavior. Pharmacological, anatomical and genetic studies show that activation of the MC system reduces meal size, whereas de-activation of the MC system increases meal size. Several brain regions, including distinct hypothalamic nuclei and the hindbrain, are involved in this process. Further dissection of MC pathways in feeding behavior is the subject of recent and probably future studies. As the MC system is involved in animal models of obesity and (possibly) anorexia, it appears that this is a target system for development of drugs for the treatment of disturbed human eating behavior.

Animals↗
PubMed1993

[Eating disorder and confession. Is there a correlation between the type of eating disorder and specific religious affiliation?].

At the Klinik am Korso in Bad Oeynhausen, a special center for eating disorders, 789 patients from the years 1989 and 1990 were subdivided according to their diagnosis and religious affiliation and analyzed. The most striking result was a higher incidence of anorectic abstainers among Protestants and of bulimia with vomiting among Roman Catholics. This was linked up with the more internalized drive control of the Protestants. Further investigations are encouraged to analyze the essence of this connection.

Adult↗
PubMed1997

Eating behavior and eating disorders: the interface between clinical research and clinical practice.

Cognitive-behavioral therapy (CBT) has been shown to be a highly effective form of treatment for patients with bulimia nervosa and anorexia nervosa. Issues of satiety disturbances, food restriction, and food choice are central to this form of therapy; however, ingestive behavior research that directly addresses these issues in eating disorder patients has often been overlooked by clinicians. These areas of research are reviewed and the implications of the findings for more effective CBT therapy with anorexics and bulimics are discussed.

Cognitive Behavioral Therapy↗
PubMed1991

Niacin status of humans as affected by eating decorticated and whole-ground sorghum (Sorghum gramineae) grain, ready-to-eat breakfast cereals.

Niacin utilization to humans from whole grain ground sorghum flour and decorticated grain ground sorghum flour was studied. During two, randomly-arranged experimental periods of 14 days each, the 10 healthy adult subjects ate constant, laboratory controlled diets which included 28 g per day of either a ready-to-eat cereal prepared from whole-ground-sorghum flour or one prepared from decorticated (polished) sorghum flour. All subjects received both experimental treatments, made complete collections of urine and stools, and gave fasting blood samples at the ends of both experimental periods. Although the whole ground cereal contained higher amounts of niacin than did the decorticated cereal, urinary losses of N-methylnicotinamine were higher when the decorticated cereal was fed than when the whole ground cereal was used. Blood serum levels of nicotinamide and N-nicotinamide were higher when the whole ground cereal was fed than the feeding of the decorticated cereal was given. Therefore, it appears that the niacin of whole ground sorghum is absorbed but then the need for niacin is either increased or its urinary excretion is inhibited.

Adult↗
PubMed2004

To eat or not to eat: implications of the attentional myopia model for restrained eaters.

The attentional myopia model of behavioral control was tested in a study of food consumption by chronic dieters. According to the model, when individuals' attentional capacity is limited, their behavior will be disproportionately influenced by highly salient internal and external cues to the exclusion of more distal stimuli. In situations that normally feature conflicting behavioral pressures, such a state of narrowed attention is likely to result in abnormally disinhibited behavior when cues promoting action are more salient and to result in abnormally restrained behavior when inhibiting cues are more salient. In addition to supporting the predictions of the model, this study provided the first evidence for enhanced behavioral control under conditions of limited attention. Participants' responses to a thought-reporting measure also provided evidence for the role played by attentional myopia in the control of eating. Implications for a broad array of regulatory successes and failures are discussed.

Adolescent↗
PubMed1994

Binge eating versus nonpurged eating in bulimics: is there a carbohydrate craving after all?

Food selection and macro nutrient content were evaluated in a group of bulimic subjects, both during the nonpurged intake and the bingeing. Dietary data was assessed by single 24-hour recall. As expected, energy distribution and food selection differed markedly between the nonpurged diet and the binges. The main differences were related to an inverse relationship in the order of macro nutrients, fat being the dominant and protein the least important source of macro nutrients during binge eating. The nutrient content during binges admittedly had a preponderance for fat. Nevertheless, the primary choice of food items during binges was carbohydrates, which was shown both by a greater quantity and by the subjects' own desires.

Adult↗