RESUMO
OBJECTIVE: The purpose of this study was to review the existing quantitative and qualitative evidence regarding how mindfulness-based interventions (MBIs) help cope with cancer-related challenges and increase affected patients' perceived self-efficacy. METHODS: A systematic literature search was conducted on PubMed, PsycInfo, PubPsych, and CINAHL. Quantitative, qualitative, and mixed methods studies were included if they (1) evaluated MBIs (2) for patients with cancer or cancer survivors (3) regarding their impact on coping with cancer and perceived self-efficacy. The reports were screened by two independent reviewers and conflicts were resolved by a third reviewer. The review was pre-registered on PROSPERO (CRD42022368765). RESULTS: Findings from 28 reports of 19 quantitative studies, six qualitative studies, and three mixed-methods studies (total N = 1722) were extracted and integrated. The synthesis of quantitative data showed considerable heterogeneity in outcomes and measurement instruments. Most often reported were significant positive impacts of mindfulness on general coping skills, self-regulation, and perceived efficacy in coping with cancer. Qualitative interviews with patients supported those results. The three meta-themes identified were that MBI (1) provided patients with tools to use in stressful situations, (2) promoted a general change of mindset and (3) created a feeling of social connectedness. CONCLUSIONS: The reviewed studies suggest that MBI can promote coping and enhance the perceived self-efficacy of patients with cancer. In the future, more research investigating the different aspects of coping and the potentially moderating role of self-efficacy could provide further insights with respect to how coping and self-efficacy related to MBI.
Assuntos
Adaptação Psicológica , Atenção Plena , Neoplasias , Pesquisa Qualitativa , Autoeficácia , Humanos , Atenção Plena/métodos , Neoplasias/psicologia , Neoplasias/terapia , Sobreviventes de Câncer/psicologiaRESUMO
INTRODUCTION: The global trend of legalizing medical cannabis (MC) is on the rise. In Germany, physicians have prescribed MC at the expense of health insurers since 2017. However, the teaching on MC has been scant in medical training. This study investigates medical students' attitudes and perceived competence regarding MC and evaluates how varying materials (videos/articles) impact their opinions. METHODS: Fourth-year medical students were invited to participate in the cross-sectional study. During an online session, students viewed a video featuring a patient with somatoform pain discussing her medical history, plus one of four randomly assigned MC-related materials (each an article and a video depicting a positive or negative perspective on MC). Students' opinions were measured at the beginning [T0] and the end of the course [T1] using a standardized questionnaire with a five-point Likert scale. We assessed the influence of the material on the students' opinions using paired-sample t-tests. One-way analysis of variance and Tukey post-hoc tests were conducted to compare the four groups. Pearson correlations assessed correlations. RESULTS: 150 students participated in the course, the response rate being 75.3% [T0] and 72.7% [T1]. At T0, students felt a little competent regarding MC therapy (M = 1.80 ± 0.82). At T1, students in groups 1 (positive video) and 3 (positive article) rated themselves as more capable in managing MC therapy [Formula: see text], and students in groups 3 (positive article) and 4 (negative article) felt more skilled in treating patients with chronic pain [Formula: see text]. Compared to the other groups, group 2 students (negative video) felt significantly less competent. They perceived cannabis as addictive, hazardous and unsuitable for medical prescription. DISCUSSION: This study showed that medical students lack knowledge and perceived competence in MC therapy. Material influences their opinions in different ways, and they seek more training on MC. This underlines that integrating MC education into medical curricula is crucial to address this knowledge gap.
Assuntos
Educação Médica , Maconha Medicinal , Estudantes de Medicina , Humanos , Feminino , Maconha Medicinal/uso terapêutico , Estudos Transversais , AtitudeRESUMO
Background: e-Health interventions are increasing in the field of organ transplantations; however, the literature lacks evidence regarding needs, attitudes, and preferences of organ recipients and donors during the course of an organ transplantation. Methods: In a cross-sectional study, 70 subjects were assessed using self-rated and validated questionnaires, such as the PRIME MD Patient Health Questionnaire (PHQ-D) and the Essen Resource Inventory (ERI). Group differences and a multiple linear regression were also applied. Results: Organ recipients had significantly higher scores for depression (U = 245.00, z = -2.65, p = 0.008, Cohen's d = 0.32), somatoform (U = 224.50, z = -2.99, p = 0.003, Cohen's d = 0.37), and stress syndromes (U = 266.00, z = -2.25, p = 0.008, Cohen's d = 0.27). They also named the internet and apps as resources to find information regarding organ transplants (U = 177.50, z = -2.07, p = 0.017, Cohen's d = 0.28; Z = -2.308, p = 0.021) and preferred to use apps to monitor the physical condition (Z = -2.12, p = 0.034) significantly more than organ donors. Anxiety and somatoform syndromes were significant predictors to search for information regarding the transplant process (F[6,38] = 3.98, p < 0.001; R2 = 0.386). Conclusions: e-Health interventions are promising in accompanying the course of an organ transplant for patients to be informed and educated. Predominantly, potential organ recipients might benefit from apps to record physical parameters. However, anxiety syndromes might hinder patients from searching for information about the transplant process, while somatoform syndromes might enable patients who are searching for such information.
Assuntos
Depressão , Transplante de Órgãos , Humanos , Uso da Internet , Estudos Transversais , Qualidade de Vida , AnsiedadeRESUMO
INTRODUCTION: Germany is one of the few countries with a medical specialty of psychosomatic medicine and psychotherapy and many treatment resources of this kind. OBJECTIVE: This observational study describes the psychosomatic treatment programs as well as a large sample of day-hospital and inpatients in great detail using structured diagnostic interviews. METHODS: Mental disorders were diagnosed according to ICD-10 and DSM-IV by means of Mini-DIPS and SCID-II. In addition to the case records, a modified version of the CSSRI was employed to collect demographic data and service use. The PHQ-D was used to assess depression, anxiety, and somatization. RESULTS: 2,094 patients from 19 departments participated in the study after giving informed consent. The sample consisted of a high proportion of "complex patients" with high comorbidity of mental and somatic diseases, severe psychopathology, and considerable social and occupational dysfunction including more than 50 days of sick leave per year in half of the sample. The most frequent diagnoses were depression, somatoform and anxiety disorders, eating disorders, personality disorders, and somato-psychic conditions. CONCLUSIONS: Inpatient and day-hospital treatment in German university departments of psychosomatic medicine and psychotherapy is an intensive multimodal treatment for complex patients with high comorbidity and social as well as occupational dysfunction.
Assuntos
Pacientes Internados , Medicina Psicossomática , Humanos , Transtornos Psicofisiológicos/epidemiologia , Transtornos Psicofisiológicos/terapia , Psicoterapia , Hospitais , Alemanha/epidemiologiaRESUMO
Patients suffering from Long-COVID syndrome experience a variety of different symptoms on a physical, but also on a psychological and social level. Previous psychiatric conditions such as depression and anxiety have been identified as separate risk factors for developing Long-COVID syndrome. This suggests a complex interplay of different physical and mental factors rather than a simple cause-effect relationship of a specific biological pathogenic process. The biopsychosocial model provides a foundation for understanding these interactions and integrating them into a broader perspective of the patient suffering from the disease instead of the individual symptoms, pointing towards the need of treatment options on a psychological as well as social level besides biological targets. This leads to our conclusion, that the biopsychosocial model should be the underlying philosophy of understanding, diagnosing and treating patients suffering from Long-COVID syndrome, moving away from the strictly biomedical understanding suspected by many patients, treaters and the media while also reducing the stigma still associated with the suggestion of a physical-mental interplay.
Assuntos
COVID-19 , Transtornos Mentais , Humanos , COVID-19/complicações , Síndrome de COVID-19 Pós-Aguda , Transtornos Mentais/etiologia , Transtornos Mentais/terapia , Ansiedade , DepressãoRESUMO
OBJECTIVE: The COVID-19 pandemic may be associated with massive impacts on mental health. For example, people with pre-existing mental illness were particularly vulnerable to mental health deterioration. It is known that resilience and general self-efficacy can be protective factors for mental health in the face of stress and challenge such as the COVID-19 pandemic. This study is the first to examine the associations of resilience and general self-efficacy on mental health coping with acute COVID-19 infection in home isolation. METHODS: This study is a cross-sectional online survey of people with acute, PCR-diagnosed COVID-19 infection during their home isolation. Recruitment was conducted by telephone via the Freudenstadt health department (Germany). After informed consent, study participants received a link for an online questionnaire. The questionnaire assessed sociodemographic aspects, resilience, general self-efficacy, COVID-19 somatic health, psychological burden (depressiveness, anxiety, somatic symptom disorder), stress experience, and coping strategies. Descriptive statistics, correlational analyses, and multiple linear regressions with resilience and general self-efficacy as independent variables were performed. RESULTS: A total of 224 home-isolated people with acute COVID-19 infection were included in the study. Lower resilience and lower general self-efficacy were each related with more intense perception of COVID-19 somatic symptoms, higher psychological burden, increased stress perception, lower coping skills, and lower experienced support. DISCUSSION: Resilience and general self-efficacy are essential for mental health as well as for coping with acute COVID-19 infection. They not only protect against negative effects on mental health but also enhance positive effects. Resilience is positively related to the perception and evaluation of somatic COVID-19 symptoms. More resilient people with COVID-19 infection feel physically healthier. CONCLUSION: Home-isolated people with acute COVID-19 infection should be screened for support needs using standardized brief questionnaires to avoid negative psychological and somatic consequences. Demand-driven, low-threshold, digital, and individualized intervention programs should also be developed and established for the home isolation setting.
Assuntos
COVID-19 , Humanos , COVID-19/psicologia , Saúde Mental , Pandemias , Autoeficácia , Estudos Transversais , Adaptação Psicológica , PercepçãoRESUMO
The aim of this longitudinal study was to examine changes in COVID-19 and illness-related perceptions, gastrointestinal symptoms, coping, catastrophising, psychological distress, and QoL during the COVID-19 pandemic. A total of 831 adults with a gastrointestinal condition completed an online questionnaire at baseline (May-October 2020). Of those, 270 (32.5%) participants (85.2% female, mean age = 47.3 years) provided follow-up data (March-May 2021). Repeated-measures multiple analysis of variance and a cross-lagged panel model were used to test the study hypotheses. Gastrointestinal symptoms and COVID-19 perceptions at follow-up were strongly predicted by their baseline values, while illness perceptions were predicted by baseline gastrointestinal symptoms. Cross-lagged relationships indicated a reciprocal relationship between gastrointestinal symptoms and psychological distress. Moreover, gastrointestinal symptoms had substantial predictive utility, strongly predicting future gastrointestinal symptoms, and to a lesser extent, more negative illness perceptions, greater psychological distress, and greater use of adaptive coping strategies across time.
Assuntos
COVID-19 , Angústia Psicológica , Adulto , Humanos , Feminino , Pessoa de Meia-Idade , Masculino , Estresse Psicológico/psicologia , Qualidade de Vida/psicologia , Estudos Longitudinais , Pandemias , Adaptação Psicológica , Inquéritos e QuestionáriosRESUMO
OBJECTIVES: This study aimed to determine the relationship between frequently used patient-reported outcome (PRO) measures and a multitask performance outcome (PerfO) measure of general physical function (PF) and to examine the association of these measures with depressive mood, pain, and age. METHODS: Frequently used PRO measures of general PF (Patient-Reported Outcomes Measurement Information System [PROMIS] PF item bank, PROMIS PF Short Form 20a, Short Form 36 Physical Function Scale) and a PerfO test battery, namely, the Physical Performance Test (PPT), were administered to 78 adult patients from 3 inpatient clinics (cardiology and angiology, rheumatology and clinical immunology, and psychosomatic medicine) at Charité - Universitätsmedizin Berlin. Pearson correlations were used to investigate the associations between PRO measures and the PPT. To explore the predictive value of age, depressive symptoms, and pain intensity, we conducted multiple linear regression analysis for each PF measure. RESULTS: We found strong linear relationships between PRO measures and PPT sum scores. Correlations between PPT sum scores and PROMIS PF T-scores were r > 0.75. For all PRO and PerfO measures, age was a predictor of general PF whereas depressive mood was not found to be a relevant predictor. Moreover, pain intensity was found to be a significant predictor of PRO measures but not for PPT sum scores. CONCLUSIONS: Our findings suggest that frequently used PRO measures and a multitask PerfO measure of general PF can be used to measure a common PF construct. Nevertheless, PF scores based on PRO measures should ideally be controlled for self-rated pain intensity.
Assuntos
Avaliação de Resultados em Cuidados de Saúde , Medidas de Resultados Relatados pelo Paciente , Adulto , Humanos , Medição da DorRESUMO
Functional gastrointestinal disorders such as functional dyspepsia (FD) and irritable bowel syndrome (IBS) are stress-associated. The COVID-19 pandemic, which has been rampant since 2020, has caused anxiety and stress in the population. Distancing measures to combat the pandemic have affected mental health. Our objective was to examine the impact of the 3rd lockdown in Germany in December 2020 and January 2021 on the apprehension of patients with FD and IBS.Patients diagnosed with FD or IBS treated in a tertiary or primary care hospital in the South of Baden-Württemberg in 2020 voluntarily participated in an anonymous online survey. Questions about concomitant diseases, concern about COVID-19 and stress perception were answered.A total of 106 patients (â=67, â=38, 1 diverse) participated in the survey. Of these, 16 had FD (â=9, â=6, diverse=1), 80 had IBS (â=52, â=28), and 10 had both (â=6, â=4). The average age was 43.6 years. Depressive and anxiety disorders were most frequently reported comorbidities in both the FD (25% each) and IBS group (20% each), followed by joint wear and tear (FD: 13%, RDS: 14%). In a direct comparison of participants with FD and IBS, those with IBS showed significantly higher scores for an increase in gastrointestinal (GI) symptoms during the pandemic (p=0.007), more frequent presentation to a physician during the pandemic, and greater social withdrawal due to GI symptoms (p=0.05). In direct comparison, those with IBS showed higher scores for fear that vaccination against COVID-19 would adversely affect GI symptoms compared to FD (p=0.05).In times of the pandemic, interdisciplinary collaboration in the care of patients with FD or IBS seems more necessary than ever to address concerns and provide good patient care.
Assuntos
COVID-19 , Dispepsia , Gastroenteropatias , Síndrome do Intestino Irritável , Adulto , Ansiedade/epidemiologia , Transtornos de Ansiedade/complicações , Transtornos de Ansiedade/epidemiologia , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Dispepsia/complicações , Dispepsia/epidemiologia , Gastroenteropatias/epidemiologia , Humanos , Síndrome do Intestino Irritável/epidemiologia , Síndrome do Intestino Irritável/psicologia , Pandemias , Inquéritos e QuestionáriosRESUMO
Irritable bowel syndrome (IBS) is a functional disorder of the lower digestive tract. Based on the biopsychosocial model, there is a wide range of therapeutic interventions to deal with the symptoms of IBS and to improve the quality of life of those who are affected. In this context, hypnotherapy and in particular gut-directed hypnosis represents a psychotherapeutic intervention with great empirical evidence for its efficacy.
Assuntos
Hipnose , Síndrome do Intestino Irritável , Humanos , Síndrome do Intestino Irritável/terapia , Síndrome do Intestino Irritável/psicologia , Qualidade de VidaRESUMO
The aim of this cross-sectional study was to use an extended common sense model (CSM) to evaluate the impact of fear of COVID-19 on quality of life (QoL) in an international inflammatory bowel disease cohort. An online study involving 319 adults (75% female, mean (SD) 14.06 (15.57) years of symptoms) completed the Gastrointestinal Symptom Rating Scale, Brief Illness Perceptions Questionnaire, Fear of Contracting COVID-19 Scale, Brief-COPE, Depression, Anxiety and Stress Scale, and the EUROHIS-QOL. The extended CSM had an excellent fit (χ2 (9) = 17.06, p = .05, χ2/N = 1.90, RMSEA = 0.05, SRMR = 0.04, CFI = .99, TLI = .97, GFI = 0.99), indicating the influence of gastrointestinal symptoms on QoL was mediated by illness perceptions, fear of COVID-19, adaptive and maladaptive coping, and psychological distress. Interventions targeting the fear of COVID-19 in the context of an individual's perceptions will likely enhance QoL during the pandemic.
Assuntos
COVID-19 , Doenças Inflamatórias Intestinais , Adulto , Doença Crônica , Estudos Transversais , Medo , Feminino , Humanos , Doenças Inflamatórias Intestinais/psicologia , Masculino , Qualidade de Vida/psicologiaRESUMO
This study aimed to explore the association between perceived isolation and symptoms of distress in people with GI disorders at the time of the pandemic; and to examine factors which moderate this relationship. This online cross-sectional survey was advertised in May-September 2020 via patient organisations and associated social media. Overall, 831 people (82% female, mean age 49 years) from 27 countries participated. A significant relationship between social isolation and psychological distress was noted (r = .525, p < .001). GI symptoms moderated the association between isolation and distress (B = .047, t = 2.47, p = .015). Interventions targeting these factors may help to reduce distress in people with GI disorders at the time of major stressors such as the COVID-19 pandemic.
Assuntos
COVID-19 , Gastroenteropatias , Estudos Transversais , Feminino , Gastroenteropatias/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Pandemias , SARS-CoV-2RESUMO
The novel peptide phoenixin was shown to be involved in several physiological processes ranging from reproduction to food intake. Interest in this protein has steadily increased over the last few years and its known implications have become much broader, playing a role in glucose homeostasis, anxiety, nociception, and pruritus. Phoenixin is expressed in a multitude of organs such as the small intestine, pancreas, and in the hypothalamus, as well as several other brain nuclei influencing numerous physiological functions. Its highly conserved amino-acid sequence amongst species leads to the assumption, that phoenixin might be involved in essential physiological functions. Its co-expression and opposing functionality to the extensively studied peptide nesfatin-1 has given rise to the idea of a possible counterbalancing role. Several recent publications focused on phoenixin's role in stress reactions, namely restraint stress and lipopolysaccharide-induced inflammation response, in which also nesfatin-1 is known to be altered. This review provides an overview on the phoenixins and nesfatin-1 properties and putative effects, and especially highlights the recent developments on their role and interaction in the response to response.
Assuntos
Nucleobindinas/metabolismo , Hormônios Peptídicos/metabolismo , Estresse Psicológico/metabolismo , Animais , Pleiotropia Genética , Humanos , Nucleobindinas/genética , Hormônios Peptídicos/genética , Receptores Acoplados a Proteínas G/metabolismo , Transdução de Sinais , Estresse Psicológico/genéticaRESUMO
Ghrelin and nesfatin-1 are enteroendocrine peptide hormones expressed in rat X/A-like and human P/D1cells of the gastric mucosa. Besides their effect on food intake, both peptides are also implicated in various other physiological systems. One of these is the reproductive system. This present review illustrates the distribution of ghrelin and nesfatin-1 along the hypothalamus-pituitary-gonadal (HPG) axis, their modulation by reproductive hormones, and effects on reproductive functions as well as highlighting gaps in current knowledge to foster further research.
Assuntos
Grelina/metabolismo , Nucleobindinas/metabolismo , Reprodução/genética , Feminino , Grelina/sangue , Grelina/genética , Humanos , Hipotálamo/metabolismo , Nucleobindinas/sangue , Nucleobindinas/genética , Síndrome do Ovário Policístico/metabolismo , Síndrome do Ovário Policístico/patologia , Pré-Eclâmpsia/metabolismo , Pré-Eclâmpsia/patologia , GravidezRESUMO
OBJECTIVES: The prevalence of eating disorders is rising worldwide. The low body weight in anorexia nervosa as well as the increase in body mass index due to binge eating disorder are contributing to a strikingly high morbidity and mortality. In a similar pattern, the prevalence and burden of the disease of functional gastrointestinal disorders such as functional dyspepsia and irritable bowel syndrome is increasing. As gastrointestinal complaints are commonly reported by patients with eating disorders, the question arose whether there is a relationship between eating disorders and functional gastrointestinal disorders. METHODS: To address the need to better understand the interplay between eating disorders and functional gastrointestinal disorders as well as factors that might influence this connection, the data bases Medline, Web of Science and Embase were systematically searched. RESULTS: After removal of duplicates the search yielded 388 studies which were screened manually. As a result, 36 publications were selected for inclusion in this systematic review. CONCLUSION: The occurrence of functional gastrointestinal disorders like irritable bowel syndrome and functional dyspepsia in patients with eating disorders is considerably high and often associated with psychological, hormonal and functional alterations. In the future, further research addressing the underlying mechanisms accounting for this relationship is required.
Assuntos
Anorexia Nervosa , Transtorno da Compulsão Alimentar , Dispepsia , Transtornos da Alimentação e da Ingestão de Alimentos , Síndrome do Intestino Irritável , Anorexia Nervosa/complicações , Anorexia Nervosa/epidemiologia , Anorexia Nervosa/psicologia , Transtorno da Compulsão Alimentar/psicologia , Dispepsia/complicações , Dispepsia/epidemiologia , Humanos , Síndrome do Intestino Irritável/epidemiologiaRESUMO
Persistent or new symptoms after infection with SARS-CoV-2 are common and are referred to as Long COVID. Fatigue is by far the most common symptom. The current article deals with fatigue in the context of Long COVID, attempts a pathogenetic classification and makes suggestions for appropriate treatment.
Assuntos
COVID-19 , COVID-19/complicações , Fadiga/etiologia , Humanos , SARS-CoV-2 , Síndrome de COVID-19 Pós-AgudaRESUMO
The worldwide development of twin cohorts began after World War II. These cohorts now include around 1.5 million twins, and more than 2748 twin studies have been published between 1950 and 2012. Each year, the number of twin publications increases by another 500 to 1000. The underrepresentation of German twin studies cannot be solely explained by the abuse of medical research under National Socialism. Developing and expanding large twin cohorts is a challenge in terms of both ethics and data protection. However, twin cohorts enable long-term and real-time research on many medical issues and contribute to answer the question of predisposition or environment as possible disease triggers - even after the sequencing of the human genome.There are currently two German twin cohorts: the biomedical cohort HealthTwiSt, with around 1500 pairs of twins, and TwinLife, a sociological-psychological cohort with around 4000 pairs of twins. There are also disease-specific cohorts. The TwinHealth Consortium in the Faculty of Medicine at the University of Tübingen was established in 2016 with the aim of enabling open-ended and sustainable twin research in Tübingen to answer various scientific questions.With the help of systematic literature research and medical history, this article gives an overview of the worldwide development of twin studies and databases over the last 100 years. The example of the Tübingen TwinHealth Initiative illuminates the structure of a twin cohort and its legal, ethical, and data protection aspects.
Assuntos
Pesquisa Biomédica , Doenças em Gêmeos , Estudos de Coortes , Alemanha/epidemiologia , HumanosRESUMO
BACKGROUND: Physical activity (PA) plays a role in the course of anorexia nervosa (AN). OBJECTIVE: To assess the association between PA, nutritional status and psychological parameters in patients with AN. METHOD: Using a wearable activity monitor, PA was assessed in 60 female AN inpatients, by step count and time spent in 4 metabolic equivalent (MET)-intensity levels: sedentary behaviour, light, moderate and vigorous PA. In addition, BMI, psychological (patient-reported outcome questionnaires) and nutritional parameters (body fat, energy and macronutrient intake) were assessed. RESULTS: The study population spent little time in vigorous PA. BMI on admission and discharge was higher when more time was spent in sedentary behaviour, and lower with more time spent in light PA. Relationships between PA and patient-reported outcomes were weak and limited to an association between vigorous PA and compulsiveness. Low fat mass was associated with more time spent in light PA, while subjects with higher step counts showed less intake of energy, carbohydrates and fat. CONCLUSION: The relationship between inadequate food intake and increased PA in patients with AN requires further investigation.
Assuntos
Anorexia Nervosa/psicologia , Anorexia Nervosa/terapia , Exercício Físico , Estado Nutricional , Adolescente , Adulto , Feminino , Monitores de Aptidão Física , Humanos , Fatores de Risco , Comportamento Sedentário , Adulto JovemRESUMO
OBJECTIVE: The recommendation for conventional body weight loss (BWL) treatment in obesity is 5-10%. It is not clear whether BWL is similar across the three different body mass index (BMI) obesity classes. The aim was to provide an overview on BWL across these classes in moderate lifestyle/diet intervention programs. METHOD: A systematic literature search was conducted and the evidence of randomized controlled trials (RCTs) and pre-post design studies synthesized. The outcome was BWL. RESULTS: For RCTs, mean BWL in the intervention group was 3.6 kg (class I) and 5.3 kg (class II), which equates to 4 and 5% BWL, respectively. None of the assessed class III obesity studies met the inclusion criteria. For pre-post design studies, mean BWL was 5.4 kg (class I), 5.5 kg (class II) and 7.9 kg (class III), with high variation within and across studies in the latter. This equates to 6, 5 and, 6% BWL, respectively. CONCLUSIONS: BWL of moderate BWL programs are similar across the different obesity classes. For class I obesity, the results differ between RCT and pre-post design studies by 2% BWL. The high variation of BWL in class III obesity might reflect different states of motivation such as the attitude towards bariatric surgery.
Assuntos
Obesidade/classificação , Obesidade/terapia , Programas de Redução de Peso , Índice de Massa Corporal , Humanos , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
PURPOSE OF REVIEW: Obesity is affecting over 600 million adults worldwide and has numerous negative effects on health. Since ghrelin positively regulates food intake and body weight, targeting its signaling to induce weight loss under conditions of obesity seems promising. Thus, the present work reviews and discusses different possibilities to alter ghrelin signaling. RECENT FINDINGS: Ghrelin signaling can be altered by RNA Spiegelmers, GHSR/Fc, ghrelin-O-acyltransferase inhibitors as well as antagonists, and inverse agonists of the ghrelin receptor. PF-05190457 is the first inverse agonist of the ghrelin receptor tested in humans shown to inhibit growth hormone secretion, gastric emptying, and reduce postprandial glucose levels. Effects on body weight were not examined. Although various highly promising agents targeting ghrelin signaling exist, so far, they were mostly only tested in vitro or in animal models. Further research in humans is thus needed to further assess the effects of ghrelin antagonism on body weight especially under conditions of obesity.