RESUMO
BACKGROUND: Semaglutide, a glucagon-like peptide-1 receptor agonist, has been shown to reduce the risk of adverse cardiovascular events in patients with diabetes. Whether semaglutide can reduce cardiovascular risk associated with overweight and obesity in the absence of diabetes is unknown. METHODS: In a multicenter, double-blind, randomized, placebo-controlled, event-driven superiority trial, we enrolled patients 45 years of age or older who had preexisting cardiovascular disease and a body-mass index (the weight in kilograms divided by the square of the height in meters) of 27 or greater but no history of diabetes. Patients were randomly assigned in a 1:1 ratio to receive once-weekly subcutaneous semaglutide at a dose of 2.4 mg or placebo. The primary cardiovascular end point was a composite of death from cardiovascular causes, nonfatal myocardial infarction, or nonfatal stroke in a time-to-first-event analysis. Safety was also assessed. RESULTS: A total of 17,604 patients were enrolled; 8803 were assigned to receive semaglutide and 8801 to receive placebo. The mean (±SD) duration of exposure to semaglutide or placebo was 34.2±13.7 months, and the mean duration of follow-up was 39.8±9.4 months. A primary cardiovascular end-point event occurred in 569 of the 8803 patients (6.5%) in the semaglutide group and in 701 of the 8801 patients (8.0%) in the placebo group (hazard ratio, 0.80; 95% confidence interval, 0.72 to 0.90; P<0.001). Adverse events leading to permanent discontinuation of the trial product occurred in 1461 patients (16.6%) in the semaglutide group and 718 patients (8.2%) in the placebo group (P<0.001). CONCLUSIONS: In patients with preexisting cardiovascular disease and overweight or obesity but without diabetes, weekly subcutaneous semaglutide at a dose of 2.4 mg was superior to placebo in reducing the incidence of death from cardiovascular causes, nonfatal myocardial infarction, or nonfatal stroke at a mean follow-up of 39.8 months. (Funded by Novo Nordisk; SELECT ClinicalTrials.gov number, NCT03574597.).
Assuntos
Fármacos Cardiovasculares , Doenças Cardiovasculares , Agonistas do Receptor do Peptídeo 1 Semelhante ao Glucagon , Obesidade , Humanos , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/mortalidade , Doenças Cardiovasculares/prevenção & controle , Diabetes Mellitus Tipo 2 , Método Duplo-Cego , Peptídeos Semelhantes ao Glucagon , Hipoglicemiantes , Infarto do Miocárdio , Obesidade/complicações , Sobrepeso/complicações , Acidente Vascular Cerebral , Receptor do Peptídeo Semelhante ao Glucagon 1/agonistas , Agonistas do Receptor do Peptídeo 1 Semelhante ao Glucagon/administração & dosagem , Agonistas do Receptor do Peptídeo 1 Semelhante ao Glucagon/efeitos adversos , Agonistas do Receptor do Peptídeo 1 Semelhante ao Glucagon/uso terapêutico , Fármacos Cardiovasculares/administração & dosagem , Fármacos Cardiovasculares/efeitos adversos , Fármacos Cardiovasculares/uso terapêuticoRESUMO
Older medications approved for chronic weight management (orlistat, naltrexone/bupropion, liraglutide 3 mg and, in the USA, phentermine/topiramate) have not been widely adopted by health care providers. Those medications produce only modest additional weight loss when used to augment lifestyle intervention. However, semaglutide 2.4 mg weekly has recently emerged and produces much more weight loss - on average 15% weight loss at 1 year. Semaglutide's enhanced efficacy and that its class (GLP-1 receptor analogs) is well-known may result in more clinicians adopting pharmacotherapy. Furthermore, the first dedicated cardiovascular outcome trial powered for superiority testing an anti-obesity medication (SELECT) is underway with semaglutide 2.4 mg. A positive outcome will further promote the concept that weight management should be a primary target for cardiometabolic disease control. In phase 3, tirzepatide and cagrilintide/semaglutide combination are showing promise for even greater weight loss efficacy. Another recently approved medication takes a personalized medicine approach; setmelanotide is approved as a therapy for those with some of the ultra-rare genetic diseases characterized by severe, early onset obesity. This chapter reviews the currently available and anticipated medications for chronic weight management as well as those approved for the genetic and syndromic obesities.
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Fármacos Antiobesidade , Fentermina , Fármacos Antiobesidade/uso terapêutico , Humanos , Polipeptídeo Amiloide das Ilhotas Pancreáticas , Obesidade/tratamento farmacológico , Fentermina/uso terapêutico , Redução de PesoRESUMO
Against the backdrop of obesity as a major public health problem, we examined three questions: How much weight loss is needed to benefit patients with obesity? How well do current therapies do in producing weight loss? What strategies can be used to improve patient outcomes using evidence-based studies. This paper reviews literature on the outcomes of lifestyle, diet, medications and surgical treatments for obesity using literature searches for obesity treatments. Current treatments, including lifestyle, diet and exercise, produce a weight loss of 5% to 7% on average. Despite continued attempts to identify superior dietary approaches, most careful comparisons find that low carbohydrate diets are not significantly better than low fat diets for weight loss. The four medications currently approved by the US Food and Drug Administration for long-term management of obesity are not as effective as surgery, adding about 5% on average to lifestyle approaches to weight loss. Two new medications that are under investigation, semaglutide and tirzepatide, significantly improve on this. For all treatments for weight loss, including lifestyle, medications and surgery, there is enormous variability in the amount of weight lost. Examination of this literature has yielded evidence supporting baseline and process predictors, but the effect sizes associated with these predictors are small and there are no prospective studies showing that a personalized approach based on genotype or phenotype will yield uniform success. Because obesity is a chronic disease it requires a 'continuous treatment model' across the lifespan.
Assuntos
Obesidade , Redução de Peso , Dieta com Restrição de Gorduras , Exercício Físico , Humanos , Estilo de Vida , Obesidade/terapiaRESUMO
Cardiovascular disease (CVD) is a major cause of morbidity and mortality. Although it has been widely appreciated that obesity is a major risk factor for CVD, treatments that produce effective, durable weight loss and the impact of weight reduction in reducing cardiovascular risk have been elusive. Instead, progress in CVD risk reduction has been achieved through medications indicated for controlling lipids, hyperglycemia, blood pressure, heart failure, inflammation, and/or thrombosis. Obesity has been implicated as promoting all these issues, suggesting that sustained, effective weight loss may have independent cardiovascular benefit. GLP-1 receptor agonists (RAs) reduce weight, improve glycemia, decrease cardiovascular events in those with diabetes, and may have additional cardioprotective effects. The GLP-1 RA semaglutide is in phase 3 studies as a medication for obesity treatment at a dose of 2.4â¯mgâ¯subcutaneously (s.c.) once weekly. Semaglutide Effects on Heart Disease and Stroke in Patients with Overweight or Obesity (SELECT) is a randomized, double-blind, parallel-group trial testing if semaglutide 2.4â¯mgâ¯subcutaneously once weekly is superior to placebo when added to standard of care for preventing major adverse cardiovascular events in patients with established CVD and overweight or obesity but without diabetes. SELECT is the first cardiovascular outcomes trial to evaluate superiority in major adverse cardiovascular events reduction for an antiobesity medication in such a population. As such, SELECT has the potential for advancing new approaches to CVD risk reduction while targeting obesity.
Assuntos
Doenças Cardiovasculares/prevenção & controle , Peptídeos Semelhantes ao Glucagon , Obesidade , Sobrepeso , Redução de Peso/efeitos dos fármacos , Cardiotônicos/administração & dosagem , Cardiotônicos/efeitos adversos , Doenças Cardiovasculares/epidemiologia , Ensaios Clínicos Fase III como Assunto , Método Duplo-Cego , Feminino , Peptídeo 1 Semelhante ao Glucagon/agonistas , Peptídeos Semelhantes ao Glucagon/administração & dosagem , Peptídeos Semelhantes ao Glucagon/efeitos adversos , Fatores de Risco de Doenças Cardíacas , Humanos , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/efeitos adversos , Masculino , Pessoa de Meia-Idade , Obesidade/diagnóstico , Obesidade/tratamento farmacológico , Obesidade/metabolismo , Avaliação de Resultados em Cuidados de Saúde , Sobrepeso/diagnóstico , Sobrepeso/tratamento farmacológico , Sobrepeso/metabolismo , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
Diabetes remission-the occurrence of durable normoglycemia without antidiabetic medications-has been demonstrated in some patients with type 2 diabetes who have achieved and sustained weight loss through lifestyle intervention or metabolic and bariatric surgery. Although this pursuit would represent a paradigm shift in our diabetes chronic care model, could diabetes remission become a routine treatment strategy in patients with type 2 diabetes? This article reviews the mechanisms by which weight loss can drive improvements in insulin sensitivity and ß-cell function sufficient to normalize glycemia, treatment approaches that provide evidence for diabetes remission, and avenues for developing the research and discovery that will be required to make diabetes remission possible as part of the routine medical management of type 2 diabetes.
RESUMO
BACKGROUND: The effects of dietary composition on weight loss are incompletely understood. In addition to energy intake, fiber intake, energy density, macronutrient composition, and demographic characteristics have all been suggested to contribute to weight loss. OBJECTIVE: The primary aim of this analysis was to assess the role of dietary fiber as a predictor of weight loss in participants who consumed calorie-restricted diets (-750 kcal/d from estimated energy needs) for 6 mo, using data from the POUNDS Lost (Preventing Overweight Using Novel Dietary Strategies) Study-a randomized trial that examined the effects of calorie-restricted diets varying in macronutrient composition on weight loss in adults. METHODS: Data were randomly partitioned to a training data set (70%) in which the effects of fiber and other weight-loss predictors were identified using adjusted Least Absolute Shrinkage and Selection Operator and model averaging. The retained predictors were then fit on the testing data set to assess predictive performance. RESULTS: Three hundred and forty-five participants (53.9% female) provided dietary records at baseline and 6 mo. Mean ± SD age and BMI for the full sample was 52.5 ± 8.7 y and 32.6 ± 3.9 kg/m2, respectively. Mean ± SD (99% CI) weight change at 6 mo for the full sample was -7.27 ± 5.6 kg (-8.05, -6.48 kg). The final, best fit model (R2 = 0.41) included fiber, energy density, fat, age, adherence, baseline weight, race, and changes from baseline in carbohydrate, fiber, PUFA, and MUFA intake, but the most influential predictor was fiber intake ($\hat{\beta }$ = -0.37; P < 0.0001). In addition, fiber was strongly associated with adherence to the macronutrient prescriptions (P < 0.0001). Interactions between race and adherence, age, baseline weight, carbohydrate, energy density, and MUFAs were also retained in the final model. CONCLUSION: Dietary fiber intake, independently of macronutrient and caloric intake, promotes weight loss and dietary adherence in adults with overweight or obesity consuming a calorie-restricted diet. This trial was registered at clinicaltrials.gov as NCT00072995.
Assuntos
Restrição Calórica , Fibras na Dieta/administração & dosagem , Sobrepeso/dietoterapia , Redução de Peso/efeitos dos fármacos , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cooperação do PacienteRESUMO
A modern approach to obesity acknowledges the multifactorial determinants of weight gain and the health benefits to be derived from weight loss. Foundational to any weight loss effort is lifestyle change, diet, and increased physical activity. The approach should be a high quality diet to which patients will adhere accompanied by an exercise prescription describing frequency, intensity, type, and time with a minimum of 150 min moderate weekly activity. For patients who struggle with weight loss and who would receive health benefit from weight loss, management of medications that are contributing to weight gain and use of approved medications for chronic weight management along with lifestyle changes are appropriate. Medications approved in the USA or European Union are orlistat, naltrexone/bupropion, and liraglutide; in the USA, lorcaserin and phentermine/topiramate are also available. Surgical management (gastric banding, sleeve gastrectomy, and Roux-en Y gastric bypass) can produce remarkable health improvement and reduce mortality for patients with severe obesity.
Assuntos
Fármacos Antiobesidade/uso terapêutico , Obesidade/terapia , Cirurgia Bariátrica/métodos , Dieta Redutora/métodos , Terapia por Exercício/métodos , Humanos , Comportamento de Redução do Risco , Resultado do Tratamento , Redução de Peso/efeitos dos fármacos , Redução de Peso/fisiologiaRESUMO
BACKGROUND: Weight loss is recommended for overweight or obese patients with type 2 diabetes on the basis of short-term studies, but long-term effects on cardiovascular disease remain unknown. We examined whether an intensive lifestyle intervention for weight loss would decrease cardiovascular morbidity and mortality among such patients. METHODS: In 16 study centers in the United States, we randomly assigned 5145 overweight or obese patients with type 2 diabetes to participate in an intensive lifestyle intervention that promoted weight loss through decreased caloric intake and increased physical activity (intervention group) or to receive diabetes support and education (control group). The primary outcome was a composite of death from cardiovascular causes, nonfatal myocardial infarction, nonfatal stroke, or hospitalization for angina during a maximum follow-up of 13.5 years. RESULTS: The trial was stopped early on the basis of a futility analysis when the median follow-up was 9.6 years. Weight loss was greater in the intervention group than in the control group throughout the study (8.6% vs. 0.7% at 1 year; 6.0% vs. 3.5% at study end). The intensive lifestyle intervention also produced greater reductions in glycated hemoglobin and greater initial improvements in fitness and all cardiovascular risk factors, except for low-density-lipoprotein cholesterol levels. The primary outcome occurred in 403 patients in the intervention group and in 418 in the control group (1.83 and 1.92 events per 100 person-years, respectively; hazard ratio in the intervention group, 0.95; 95% confidence interval, 0.83 to 1.09; P=0.51). CONCLUSIONS: An intensive lifestyle intervention focusing on weight loss did not reduce the rate of cardiovascular events in overweight or obese adults with type 2 diabetes. (Funded by the National Institutes of Health and others; Look AHEAD ClinicalTrials.gov number, NCT00017953.).
Assuntos
Doenças Cardiovasculares/prevenção & controle , Diabetes Mellitus Tipo 2/terapia , Dieta Redutora , Exercício Físico , Redução de Peso , Adulto , Idoso , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/mortalidade , Diabetes Mellitus Tipo 2/complicações , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Estimativa de Kaplan-Meier , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Sobrepeso/complicações , Fatores de Risco , Falha de TratamentoRESUMO
BACKGROUND: Several prospective studies have evaluated the association between body mass index (BMI) and death risk among patients with diabetes mellitus; however, the results have been inconsistent. METHODS AND RESULTS: We performed a prospective cohort study of 19 478 black and 15 354 white patients with type 2 diabetes mellitus. Cox proportional hazards regression models were used to estimate the association of different levels of BMI stratification with all-cause mortality. During a mean follow-up of 8.7 years, 4042 deaths were identified. The multivariable-adjusted (age, sex, smoking, income, and type of insurance) hazard ratios for all-cause mortality associated with BMI levels (18.5-22.9, 23-24.9, 25-29.9, 30-34.9 [reference group], 35-39.9, and ≥40 kg/m(2)) at baseline were 2.12 (95% confidence interval [CI], 1.80-2.49), 1.74 (95% CI, 1.46-2.07), 1.23 (95% CI, 1.08-1.41), 1.00, 1.19 (95% CI, 1.03-1.39), and 1.23 (95% CI, 1.05-1.43) for blacks and 1.70 (95% CI, 1.42-2.04), 1.51 (95% CI, 1.27-1.80), 1.07 (95% CI, 0.94-1.21), 1.00, 1.07 (95% CI, 0.93-1.23), and 1.20 (95% CI, 1.05-1.38) for whites, respectively. When stratified by age, smoking status, patient type, or the use of antidiabetic drugs, a U-shaped association was still present. When BMI was included in the Cox model as a time-dependent variable, the U-shaped association of BMI with all-cause mortality risk did not change. CONCLUSIONS: The present study indicated a U-shaped association of BMI with all-cause mortality risk among black and white patients with type 2 diabetes mellitus. A significantly increased risk of all-cause mortality was observed among blacks with BMI <30 kg/m(2) and ≥35 kg/m(2) and among whites with BMI <25 kg/m(2) and ≥40 kg/m(2) compared with patients with BMI of 30 to 34.9 kg/m(2).
Assuntos
Índice de Massa Corporal , Diabetes Mellitus Tipo 2/etnologia , Diabetes Mellitus Tipo 2/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , População Negra/etnologia , Estudos de Coortes , Feminino , Seguimentos , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Prospectivos , Fatores de Risco , Taxa de Sobrevida , População Branca/etnologiaRESUMO
BACKGROUND: Hepatic lipase (HL) plays a pivotal role in the metabolism of HDL and LDL. Recent genome-wide association studies have identified common variants in the HL gene (LIPC) associated with HDL cholesterol. OBJECTIVE: We tested the effect of a common variant in LIPC on changes in blood lipids in response to weight-loss diets in the Preventing Overweight Using Novel Dietary Strategies Trial. METHODS: We genotyped LIPC rs2070895 in 743 overweight or obese adults aged 30-70 y (61% women) who were assigned to high-fat (40% energy) or low-fat (20% energy) diets for 2 y. We measured serum concentrations of total cholesterol (TC), triglycerides, LDL cholesterol, and HDL cholesterol at baseline and 2 y of intervention. RESULTS: At 2 y of intervention, dietary fat modified effects of the variant on changes in serum TC, LDL cholesterol, and HDL cholesterol (P-interaction: 0.0008, 0.004, and 0.03, respectively). In the low-fat group, as compared to the G allele, the A allele tended to be related to the decrease in TC and LDL cholesterol concentrations [TC (ß ± SE): -5.5 ± 3.0, P = 0.07; LDL cholesterol: -4.8 ± 2.5, P = 0.06] and a lower increase in HDL cholesterol concentrations (ß ± SE: -1.37 ± 0.69, P = 0.048), whereas an opposite effect in the high-fat diet group was evident [TC (ß ± SE): 7.3 ± 2.7, P = 0.008; LDL cholesterol: 4.1 ± 2.3, P = 0.07], and there was no genetic effect on changes in HDL cholesterol concentrations (P = 0.54). CONCLUSION: Dietary fat intake modifies the effect of a common variant in LIPC on changes in serum lipids during a long-term weight-loss intervention in overweight or obese adults. This trial was registered at clinicaltrials.gov as NCT00072995.
Assuntos
HDL-Colesterol/sangue , LDL-Colesterol/sangue , Dieta Redutora , Gorduras na Dieta/administração & dosagem , Lipase/genética , Triglicerídeos/sangue , Adulto , Idoso , Índice de Massa Corporal , Dieta Hiperlipídica , Feminino , Estudo de Associação Genômica Ampla , Técnicas de Genotipagem , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Obesidade/dietoterapia , Obesidade/genética , Sobrepeso/dietoterapia , Sobrepeso/genética , Polimorfismo de Nucleotídeo Único , Redução de PesoRESUMO
IMPORTANCE: Even though one-third of US adults are obese, identification and treatment rates for obesity remain low. Clinician engagement is vital to provide guidance and assistance to patients who are overweight or obese to address the underlying cause of many chronic diseases. OBJECTIVES: To describe current best practices for assessment and lifestyle management of obesity and to demonstrate how the updated Guidelines (2013) for Managing Overweight and Obesity in Adults based on a systematic evidence review sponsored by the National Heart, Lung, and Blood Institute (NHLBI) can be applied to an individual patient. EVIDENCE REVIEW: Systematic evidence review conducted for the Guidelines (2013) for Managing Overweight and Obesity in Adults supports treatment recommendations in 5 areas (risk assessment, weight loss benefits, diets for weight loss, comprehensive lifestyle intervention approaches, and bariatric surgery); for areas outside this scope, recommendations are supported by other guidelines (for obesity, 1998 NHLBI-sponsored obesity guidelines and those from the National Center for Health and Clinical Excellence and Canadian and US professional societies such as the American Association of Clinical Endocrinologists and American Society of Bariatric Physicians; for physical activity recommendations, the 2008 Physical Activity Guidelines for Americans); a PubMed search identified recent systematic reviews covering depression and obesity, motivational interviewing for weight management, metabolic adaptation to weight loss, and obesity pharmacotherapy. FINDINGS: The first step in obesity management is to screen all adults for overweight and obesity. A medical history should be obtained assessing for the multiple determinants of obesity, including dietary and physical activity patterns, psychosocial factors, weight-gaining medications, and familial traits. Emphasis on the complications of obesity to identify patients who will benefit the most from treatment is more useful than using body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) alone for treatment decisions. The Guidelines (2013) recommend that clinicians offer patients who would benefit from weight loss (either BMI of ≥30 with or without comorbidities or ≥25 along with 1 comorbidity or risk factor) intensive, multicomponent behavioral intervention. Some clinicians do this within their primary care practices; others refer patients for these services. Weight loss is achieved by creating a negative energy balance through modification of food and physical activity behaviors. The Guidelines (2013) endorse comprehensive lifestyle treatment by intensive intervention. Treatment can be implemented either in a clinician's office or by referral to a registered dietitian or commercial weight loss program. Weight loss of 5% to 10% is the usual goal. It is not necessary for patients to attain a BMI of less than 25 to achieve a health benefit. CONCLUSIONS AND RELEVANCE: Screening and assessment of patients for obesity followed by initiation or referral of treatment should be incorporated into primary care practice settings. If clinicians can identify appropriate patients for weight loss efforts and provide informed advice and assistance on how to achieve and sustain modest weight loss, they will be addressing the underlying driver of many comorbidities and can have a major influence on patients' health status.
Assuntos
Estilo de Vida , Obesidade/terapia , Guias de Prática Clínica como Assunto , Adulto , Feminino , Humanos , Anamnese , Obesidade/diagnóstico , Atenção Primária à Saúde , Redução de PesoRESUMO
In the SELECT cardiovascular outcomes trial, semaglutide showed a 20% reduction in major adverse cardiovascular events in 17,604 adults with preexisting cardiovascular disease, overweight or obesity, without diabetes. Here in this prespecified analysis, we examined effects of semaglutide on weight and anthropometric outcomes, safety and tolerability by baseline body mass index (BMI). In patients treated with semaglutide, weight loss continued over 65 weeks and was sustained for up to 4 years. At 208 weeks, semaglutide was associated with mean reduction in weight (-10.2%), waist circumference (-7.7 cm) and waist-to-height ratio (-6.9%) versus placebo (-1.5%, -1.3 cm and -1.0%, respectively; P < 0.0001 for all comparisons versus placebo). Clinically meaningful weight loss occurred in both sexes and all races, body sizes and regions. Semaglutide was associated with fewer serious adverse events. For each BMI category (<30, 30 to <35, 35 to <40 and ≥40 kg m-2) there were lower rates (events per 100 years of observation) of serious adverse events with semaglutide (43.23, 43.54, 51.07 and 47.06 for semaglutide and 50.48, 49.66, 52.73 and 60.85 for placebo). Semaglutide was associated with increased rates of trial product discontinuation. Discontinuations increased as BMI class decreased. In SELECT, at 208 weeks, semaglutide produced clinically significant weight loss and improvements in anthropometric measurements versus placebo. Weight loss was sustained over 4 years. ClinicalTrials.gov identifier: NCT03574597 .
Assuntos
Índice de Massa Corporal , Peptídeos Semelhantes ao Glucagon , Obesidade , Redução de Peso , Humanos , Peptídeos Semelhantes ao Glucagon/uso terapêutico , Peptídeos Semelhantes ao Glucagon/efeitos adversos , Redução de Peso/efeitos dos fármacos , Obesidade/tratamento farmacológico , Obesidade/complicações , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Idoso , Resultado do Tratamento , Método Duplo-Cego , Doenças Cardiovasculares/prevenção & controleRESUMO
OBJECTIVE: To determine whether semaglutide slows progression of glycemia in people with cardiovascular disease and overweight or obesity but without diabetes. RESEARCH DESIGN AND METHODS: In a multicenter, double-blind trial, participants aged ≥45 years, with BMI ≥27 kg/m2, and with preexisting cardiovascular disease but without diabetes (HbA1c <6.5%) were randomized to receive subcutaneous semaglutide (2.4 mg weekly) or placebo. Major glycemic outcomes were HbA1c and proportions achieving biochemical normoglycemia (HbA1c <5.7%) and progressing to biochemical diabetes (HbA1c ≥6.5%). RESULTS: Of 17,604 participants, 8,803 were assigned to semaglutide and 8,801 to placebo. Mean ± SD intervention exposure was 152 ± 56 weeks and follow-up 176 ± 40 weeks. In both treatment arms mean nadir HbA1c for participants was at 20 weeks. Thereafter, HbA1c increased similarly in both arms, with a mean difference of -0.32 percentage points (95% CI -0.33 to -0.30; -3.49 mmol/mol [-3.66 to -3.32]) and with the difference favoring semaglutide throughout the study (P < 0.0001). Body weight plateaued at 65 weeks and was 8.9% lower with semaglutide. At week 156, a greater proportion treated with semaglutide were normoglycemic (69.5% vs. 35.8%; P < 0.0001) and a smaller proportion had biochemical diabetes by week 156 (1.5% vs. 6.9%; P < 0.0001). The number needed to treat was 18.5 to prevent a case of diabetes. Both regression and progression were dependent on glycemia at baseline, with the magnitude of weight reduction important in mediating 24.5% of progression and 27.1% of regression. CONCLUSIONS: In people with preexisting cardiovascular disease and overweight or obesity but without diabetes, long-term semaglutide increases regression to biochemical normoglycemia and reduces progression to biochemical diabetes but does not slow glycemic progression over time.
Assuntos
Glicemia , Peptídeos Semelhantes ao Glucagon , Hemoglobinas Glicadas , Obesidade , Sobrepeso , Peptídeos Semelhantes ao Glucagon/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Feminino , Sobrepeso/tratamento farmacológico , Sobrepeso/complicações , Obesidade/tratamento farmacológico , Obesidade/complicações , Idoso , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Método Duplo-Cego , Hemoglobinas Glicadas/metabolismo , Hipoglicemiantes/uso terapêuticoRESUMO
After a long period of failure in development, two new medications (phentermine/topiramate ER - Qsymia™ and lorcaserin - Belviq®) have been approved by the US Food and Drug Administration for long-term weight management in persons with obesity (BMI ≥ 30 kg/m(2)) or in overweight persons (BMI ≥ 27 kg/m(2)) with comorbidities. Another medication, bupropion/naltrexone, is undertaking a cardiovascular outcomes trial and an analysis in 2014 will determine its approval and release. The most widely prescribed drug for obesity, phentermine, used since 1959 for short-term weight management, has been released in a new formulation. This paper reviews these new medications, and other important events in the landscape for management of obesity, with an eye to the interests of physicians who manage hypertension. All the new drugs under discussion are re-fittings of old agents or fresh approaches to old targets; thus, what is old is new again in the pharmacotherapy of obesity.
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Fármacos Antiobesidade/uso terapêutico , Depressores do Apetite/uso terapêutico , Obesidade/tratamento farmacológico , Fármacos Antiobesidade/administração & dosagem , Fármacos Antiobesidade/efeitos adversos , Depressores do Apetite/administração & dosagem , Depressores do Apetite/efeitos adversos , Humanos , Tempo , Redução de PesoRESUMO
Lifestyle intervention is an alluring concept. Changing behaviors to reduce food intake and increase energy expenditure will reduce body weight and body fat. Large randomized clinical trials in academic settings demonstrate lifestyle intervention can produce weight loss and significant health benefits. However, they also demonstrate the problems-not all participants are able to lose even 5%, and weight regain is common. Studies conducted in real-world settings achieve modest weight loss, but no reimbursement model supports it. Health care providers need to understand the benefits and limitations of lifestyle intervention delivery in the medical office setting.
Assuntos
Exercício Físico , Estilo de Vida Saudável , Obesidade , Humanos , Estilo de Vida , Obesidade/terapia , Redução de Peso , Comportamento de Redução do Risco , Terapia por ExercícioRESUMO
OBJECTIVE: Trends in obesity prevalence and trends in control of cardiometabolic risk factors among National Health and Nutrition Examination Survey participants with diabetes from 1999 through 2020 were analyzed. METHODS: Adults who were 20 years or older and who reported having received a diagnosis of diabetes from a physician were included. RESULTS: The prevalence of overall obesity, obesity class II, and obesity class III increased from 46.9%, 14.1%, and 10.3% in 1999 to 2002 to 58.1%, 16.6%, and 14.8% in 2015 to 2020, respectively. The prevalence of participants who achieved glycemic control (HbA1c <7%) increased from 42.5% in 1999 to 2002 to 51.8% in 2007 to 2010, then decreased to 48.0% in 2015 to 2020. The prevalence of participants who achieved blood pressure control (<140/90 mmHg) or achieved non-high-density lipoprotein cholesterol control (<130 mg/dL) increased throughout the study periods. The prevalence of participants who met all three risk factor goals increased from 8.3% in 1999 to 2002 to 21.2% in 2011 to 2014 and then decreased to 18.5 in 2015 to 2020. Participants with obesity showed worsening glycemic control and lipid control than participants with normal weight. CONCLUSIONS: There were increasing trends in prevalence of obesity, blood pressure control, and lipid control from 1999 to 2002 to 2015 to 2020. Participants with obesity showed worsening glycemic control and lipid control than normal-weight participants.
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Fatores de Risco Cardiometabólico , Diabetes Mellitus , Adulto , Humanos , Prevalência , Inquéritos Nutricionais , Hemoglobinas Glicadas , Diabetes Mellitus/epidemiologia , Obesidade/epidemiologia , Fatores de Risco , ColesterolRESUMO
Obesity is a major risk factor for cardiovascular disease, yet management remains poor. Cardiologists and healthcare professionals treating people with high cardiovascular risk are in a position to address overweight and obesity to improve cardiovascular health. There are several treatment options for obesity, which are associated with numerous health benefits. Modest weight reductions of 5-10% improve cardiovascular risk factors, with greater weight loss bringing about greater benefits. Anti-obesity medications can support weight reduction when lifestyle modifications alone are insufficient. The weight loss induced by these treatments can improve cardiovascular risk, and some therapies - such as glucagon-like-peptide-1 analogues - may promote these benefits independently of weight loss. Bariatric surgery can induce greater weight losses than other treatment modalities and is associated with numerous health benefits, but newer medications such as semaglutide and those in development, such as tirzepatide, produce robust weight loss efficacy that is approaching that of bariatric surgery. Healthcare professionals must approach this disease with compassion and collaborate with patients to develop sustainable plans that improve health and maintain weight loss over the long term.
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Background: The Epitomee Capsule (EC) is an, oral, self-use, bio-degradable device for weight management, composed of absorbent polymers that self-expands in the stomach (pH-sensitive) and creates a triangular shape, space-occupying super-absorbent gel structure. A recent study reported that 42 % of study completers obtained >5 % weight reduction at 12 weeks. We performed exploratory analyses of this study to evaluate its effect on cardiovascular risk factors and on self-reported satiety, between-meal snacking and meal-size. Methods: This single-center observational study (Israel) enrolled 78 volunteers, with mean age 41 years, BMI 32.5 kg/m2, systolic/diastolic blood pressure (SBP/DBP) 124/77 mmHg. The EC was given in addition to diet and physical activity counseling. Assessments included anthropometrics, BP, lipids, and three questions (translated from Hebrew) scored 1 (not at all) to 5 (very much) for "Do you feel the EC - Q1:helps you to consume less snacks in between meals? Q2:helps you to eat less in the meal?; Q3:is causing an early sense of satiety?". Changes from baseline were assessed using a mixed model and included all patients with at least one measure. Correlation-analysis between weight-change and PROs used Kendall's tau. Result: Compared to baseline, at 12 weeks, SBP/DBP were reduced (ΔSBP: -5.5 mmHg, p = 0.0003/ΔDBP: -1.9 mmHg, p = 0.1341), with a larger effect in people with hypertension at baseline (ΔSBP: -13.2 mmHg, p < 0.00001/ΔDBP: -6.1, p = 0.008). Triglyceride-level was also significantly reduced, but not other lipids. Mean scores to Q1-3 were high throughout, with slight decreases (Q1 at W2 3.9 ± 1.1/W12 3.0 ± 1.6; Q2 at W2 3.7 ± 1.1/W12 3.1 ± 1.6; Q3 at W2 3.8 ± 1.2/W12 2.9 ± 1.6). There was a moderate correlation between PROs and weight reduction, although significance was not observed for all weeks. Conclusions: Exploratory analyses of 12 weeks treatment with EC demonstrated significant reductions in SBP, DBP, and triglycerides. The weight reduction correlated with satiety, less snacking, and reduced meal size.
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OBJECTIVE: This paper describes the baseline characteristics of the Semaglutide Effects on Heart Disease and Stroke in Patients with Overweight or Obesity (SELECT) study, one of the largest cardiovascular (CV) outcome studies in the field of obesity, which evaluates the effect of semaglutide versus placebo on major CV events. METHODS: SELECT enrolled individuals with overweight or obesity without diabetes, with prior myocardial infarction, stroke, and/or peripheral artery disease. This study reports participants' baseline characteristics in the full study population and subgroups defined by baseline glycated hemoglobin (HbA1c ; <5.7%, ≥5.7 to <6.0%, ≥6.0 to <6.5%), baseline waist to height ratio tertile, and qualifying prior CV event or condition. RESULTS: The study enrolled 17,605 participants (72.5% male) with an average (SD) age of 61.6 (8.9) years and BMI of 33.34 (5.04) kg/m2 . The most common prior CV event was myocardial infarction (76.3% of participants), followed by stroke (23.3%) and peripheral artery disease (8.6%). Furthermore, 24.3% had a heart failure diagnosis. Two-thirds of participants (66%) had HbA1c in the prediabetes range (5.7%-6.4%). Across groups of increasing HbA1c , prevalence of all CV risk factors increased. CONCLUSIONS: The enrolled population in SELECT includes participants across a broad range of relevant risk categories. This will allow the study to garner information about the CV benefits of semaglutide across these relevant clinical subgroups.