351
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Miller LE. Lorcaserin for weight loss: insights into US Food and Drug Administration approval. J Acad Nutr Diet 2013; 113:25-30. [PMID: 23260720 DOI: 10.1016/j.jand.2012.08.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 08/22/2012] [Indexed: 10/27/2022]
Affiliation(s)
- Larry E Miller
- Miller Scientific Consulting, Inc, Arden, NC 28704, USA.
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352
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Jindal A, Whaley-Connell A, Brietzke S, Sowers JR. Therapy of obese patients with cardiovascular disease. Curr Opin Pharmacol 2013; 13:200-4. [PMID: 23332347 DOI: 10.1016/j.coph.2012.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 12/21/2012] [Accepted: 12/28/2012] [Indexed: 12/14/2022]
Abstract
Obesity has reached epidemic proportions and is a significant public health concern. Obesity is associated with increased diabetes, cardiovascular and kidney disease, and associated morbidity and mortality. Despite the increasing public health problem of obesity, there is a dearth of effective treatment options. Following the FDA mandated withdrawal of sibutramine, the treatment options for obesity were limited to orlistat as the only pharmacological treatment option for long-term management of obesity. Recently two new medications (Belviq and Qsymia) were approved by FDA for long-term management of obesity. Many other antiobesity drugs are under development. Bariatric surgery has been shown to be effective in the treatment of obesity and its comorbidities. The available data suggest that even modest weight loss improves diabetes and cardiovascular disease (CVD) risk factors. We summarize the treatment options for obesity and the efficacy of these options in ameliorating cardiovascular risk factors. We also focus on the recently approved antiobesity drugs.
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Affiliation(s)
- Ankur Jindal
- University of Missouri Columbia, School of Medicine, United States
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353
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Cunningham KA, Anastasio NC, Fox RG, Stutz SJ, Bubar MJ, Swinford SE, Watson CS, Gilbertson SR, Rice KC, Rosenzweig-Lipson S, Moeller FG. Synergism between a serotonin 5-HT2A receptor (5-HT2AR) antagonist and 5-HT2CR agonist suggests new pharmacotherapeutics for cocaine addiction. ACS Chem Neurosci 2013; 4:110-21. [PMID: 23336050 DOI: 10.1021/cn300072u] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 08/11/2012] [Indexed: 11/30/2022] Open
Abstract
Relapse to cocaine dependence, even after extended abstinence, involves a number of liability factors including impulsivity (predisposition toward rapid, unplanned reactions to stimuli without regard to negative consequences) and cue reactivity (sensitivity to cues associated with cocaine-taking which can promote cocaine-seeking). These factors have been mechanistically linked to serotonin (5-hydroxytryptamine, 5-HT) signaling through the 5-HT(2A) receptor (5-HT(2A)R) and 5-HT(2C)R; either a selective 5-HT(2A)R antagonist or a 5-HT(2C)R agonist suppresses impulsivity and cocaine-seeking in preclinical models. We conducted proof-of-concept analyses to evaluate whether a combination of 5-HT(2A)R antagonist plus 5-HT(2C)R agonist would have synergistic effects over these liability factors for relapse as measured in a 1-choice serial reaction time task and cocaine self-administration/reinstatement assay. Combined administration of a dose of the selective 5-HT(2A)R antagonist M100907 plus the 5-HT(2C)R agonist WAY163909, each ineffective alone, synergistically suppressed cocaine-induced hyperactivity, inherent and cocaine-evoked impulsive action, as well as cue- and cocaine-primed reinstatement of cocaine-seeking behavior. The identification of synergism between a 5-HT(2A)R antagonist plus a 5-HT(2C)R agonist to attenuate these factors important in relapse indicates the promise of a bifunctional ligand as an anti-addiction pharmacotherapeutic, setting the stage to develop new ligands with improved efficacy, potency, selectivity, and in vivo profiles over the individual molecules.
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Affiliation(s)
| | | | | | | | | | | | | | - Scott R. Gilbertson
- Department of Chemistry, University of Houston, Houston, Texas, , United States
| | - Kenner C. Rice
- Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland, , United States
| | | | - F. Gerard Moeller
- Center for Neurobehavioral Research
on Addictions, Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center Houston,
Houston, Texas, , United States
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354
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Abstract
Type 2 diabetes and obesity commonly occur together. Obesity contributes to insulin resistance, a main cause of type 2 diabetes. Modest weight loss reduces glucose, lipids, blood pressure, need for medications, and cardiovascular risk. A number of approaches can be used to achieve weight loss, including lifestyle modification, surgery, and medication. Lorcaserin, a novel antiobesity agent, affects central serotonin subtype 2A receptors, resulting in decreased food intake and increased satiety. It has been studied in obese patients with type 2 diabetes and results in an approximately 5.5 kg weight loss, on average, when used for one year. Headache, back pain, nasopharyngitis, and nausea were the most common adverse effects noted with lorcaserin. Hypoglycemia was more common in the lorcaserin groups in the clinical trials, but none of the episodes were categorized as severe. Based on the results of these studies, lorcaserin was approved at a dose of 10 mg twice daily in patients with a body mass index ≥30 kg/m(2) or ≥27 kg/m(2) with at least one weight-related comorbidity, such as hypertension, type 2 diabetes mellitus, or dyslipidemia, in addition to a reduced calorie diet and increased physical activity. Lorcaserin is effective for weight loss in obese patients with and without type 2 diabetes, although its specific role in the management of obesity is unclear at this time. This paper reviews the clinical trials of lorcaserin, its use from the patient perspective, and its potential role in the treatment of obesity.
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Affiliation(s)
- James R Taylor
- University of Florida College of Pharmacy, Department of Pharmacotherapy and Translational Research, Gainesville, FL, USA
- Correspondence: James R Taylor University of Florida College of Pharmacy, PO Box 100486, Gainesville, FL 32610, USA, Tel +1 352 273 6239, Fax +1 352 273 6242, Email
| | - Eric Dietrich
- University of Florida College of Pharmacy, Department of Pharmacotherapy and Translational Research, Gainesville, FL, USA
| | - Jason Powell
- University of Florida College of Pharmacy, Department of Pharmacotherapy and Translational Research, Gainesville, FL, USA
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355
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To Market, To Market—2012. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-417150-3.00028-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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356
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O'Connor A, Swick AG. Interface between Pharmacotherapy and Genes in Human Obesity. Hum Hered 2013; 75:116-26. [DOI: 10.1159/000349975] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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357
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New and Emerging Pharmacologic Therapies for Type 2 Diabetes, Dyslipidemia, and Obesity. Clin Ther 2013; 35:A3-17. [DOI: 10.1016/j.clinthera.2012.12.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 11/16/2012] [Accepted: 12/14/2012] [Indexed: 01/10/2023]
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358
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Affiliation(s)
- Chang Beom Lee
- Department of Endocrinology & Metabolism, Hanyang University Medical School, Seoul, Korea
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359
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Sherafat-Kazemzadeh R, Yanovski SZ, Yanovski JA. Pharmacotherapy for childhood obesity: present and future prospects. Int J Obes (Lond) 2013; 37:1-15. [PMID: 22929210 PMCID: PMC3522799 DOI: 10.1038/ijo.2012.144] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Pediatric obesity is a serious medical condition associated with significant comorbidities during childhood and adulthood. Lifestyle modifications are essential for treating children with obesity, yet many have insufficient response to improve health with behavioral approaches alone. This review summarizes the relatively sparse data on pharmacotherapy for pediatric obesity and presents information on obesity medications in development. Most previously studied medications demonstrated, at best, modest effects on body weight and obesity-related conditions. It is to be hoped that the future will bring new drugs targeting specific obesity phenotypes that will allow clinicians to use etiology-specific, and therefore more effective, anti-obesity therapies.
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Affiliation(s)
- Roya Sherafat-Kazemzadeh
- Section on Growth and Obesity, Program in Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Susan Z. Yanovski
- Section on Growth and Obesity, Program in Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development
- Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Jack A. Yanovski
- Section on Growth and Obesity, Program in Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development
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360
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Abstract
The increasing global prevalence of obesity urgently requires an implementation of efficient preventive and therapeutic measures. Weight loss and its maintenance should be considered one of the most important strategies to reduce the incidence of obesity-related co-morbidities such as diabetes and cardiovascular diseases. Lifestyle modification focused on diet and physical activity represents the essential component of any kind of weight management. However, only an intensive lifestyle intervention can be efficient in terms of long-term weight loss. Anti-obesity drugs affect different targets in the central nervous system or peripheral tissues and improve regulatory and metabolic disturbances that contribute to the development of obesity. Anti-obesity medications provide modest additional fat loss to that achieved by lifestyle modification alone, reduce visceral fat stores, improve programme adherence, weight loss maintenance, diminish obesity-related health risks and improve a quality of life. Anti-obesity drugs do play a role in weight management. Their replacement with placebo is followed by weight regain. Due to adverse events, several anti-obesity drugs were withdrawn from the market over the past few years and currently only orlistat remains available for long-term obesity management. Drug withdrawals, failure of clinical trials with several new anti-obesity compounds as well as inappropriate demands of drug regulating agencies concerning the study protocol led to scepticism about the perspectives in the pharmacotherapy of obesity. However, recently developed anti-obesity medications such as gut hormone analogues and drug combinations provided encouraging results in terms of weight loss, safety and improvement of cardio-metabolic health risks.
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361
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Crawford A, Kreys TJ. Was it worth the weight? - Drug review on two new weight loss agents: lorcaserin (Belviq®) and phentermine/topiramate ER (QsymiaTM). Ment Health Clin 2012. [DOI: 10.9740/mhc.n129047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The prevalence of obesity in the United States (U.S.) is currently at 34%. This article will review two of the newer weight loss agents: lorcaserin and phentermine/topiramate. Mechanism of action, dosing, adverse events, and drug interactions will be discussed.
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Affiliation(s)
- Aaron Crawford
- 1University of the Incarnate Word, Feik School of Pharmacy, San Antonio, Texas
| | - Tiffany-Jade Kreys
- 1University of the Incarnate Word, Feik School of Pharmacy, San Antonio, Texas
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362
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Jindal A, Brietzke S, Sowers JR. Obesity and the Cardiorenal Metabolic Syndrome: Therapeutic Modalities and Their Efficacy in Improving Cardiovascular and Renal Risk Factors. Cardiorenal Med 2012; 2:314-327. [PMID: 23380694 DOI: 10.1159/000343803] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The prevalence of obesity has increased rapidly in the United States. Obesity affects about one third of the adult population and, even though it is attributed to excess calorie intake and inadequate physical activity, its etiopathogenesis is much more complex and is an area of active study. Lifestyle modifications (with a focus on increased activity and decreased calorie intake) have modest efficacy in the treatment of obesity. There is a dearth of safe and effective therapeutic modalities to treat obesity. In this review, we discuss the role of different treatment options in the management of obesity and its comorbidities, with a focus on recently approved drugs and the emerging role of bariatric surgery.
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Affiliation(s)
- Ankur Jindal
- Department of Internal Medicine, University of Missouri-Columbia School of Medicine, Columbia, Mo., USA
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363
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Cada DJ, Levien TL, Baker DE. Lorcaserin Hydrochloride. Hosp Pharm 2012. [DOI: 10.1310/hpj4711-871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Each month, subscribers to The Formulary Monograph Service receive 5 to 6 well-documented monographs on drugs that are newly released or are in late phase 3 trials. The monographs are targeted to Pharmacy & Therapeutics Committees. Subscribers also receive monthly 1-page summary monographs on agents that are useful for agendas and pharmacy/nursing in-services. A comprehensive target drug utilization evaluation/medication use evaluation (DUE/MUE) is also provided each month. With a subscription, the monographs are sent in print and are also available on-line. Monographs can be customized to meet the needs of a facility. Subscribers to The Formulary Monograph Service also receive access to a pharmacy bulletin board, The Formulary Information Exchange (The F.I.X.). All topics pertinent to clinical and hospital pharmacy are discussed on The F.I.X. A drug class review is now published monthly with The Formulary Monograph Service. Through the cooperation of The Formulary, Hospital Pharmacy publishes selected reviews in this column. For more information about The Formulary Monograph Service or The F.I.X., call The Formulary at 800-322-4349. The November 2012 monograph topics are on vincristine sulfate liposome injection; ZIV-aflibercept; icosapent ethyl; prednisone delayed-release tablets; and elvitegravir, cobicistat, emtricitabine, tenofovir DF. The DUE/MUE is on vincristine sulfate liposome.
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Affiliation(s)
| | - Terri L. Levien
- Drug Information Center, Washington State University, Spokane, Washington
| | - Danial E. Baker
- Drug Information Center, and College of Pharmacy, Washington State University Spokane, PO Box 1495, Spokane, Washington 99210-1495
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364
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Pedersen SD, Astrup A. Lorcaserin approval in the United States: paving the way? ENDOCRINOLOGIA Y NUTRICION : ORGANO DE LA SOCIEDAD ESPANOLA DE ENDOCRINOLOGIA Y NUTRICION 2012; 59:521-522. [PMID: 22939712 DOI: 10.1016/j.endonu.2012.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 07/11/2012] [Indexed: 06/01/2023]
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365
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Haslam D. Management of diabesity in primary care: individualisation of care. PRACTICAL DIABETES 2012. [DOI: 10.1002/pdi.1717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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366
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Psychopharmacologic treatment of obesity and eating disorders in children and adolescents. Child Adolesc Psychiatr Clin N Am 2012; 21:831-59. [PMID: 23040904 DOI: 10.1016/j.chc.2012.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review discusses the evidence base for medications that are currently used for obesity and eating disorders, including their Food and Drug Administration approval status by disorder and age group, contraindications, and major adverse effects. Investigational agents currently being considered, issues related to psychiatric and medical comorbidity, limitations of pharmacologic strategies, and recommendations for treatment are also addressed.
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367
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Abstract
Over the past 20 years, genetic studies have illuminated critical pathways in the hypothalamus and brainstem mediating energy homeostasis, such as the melanocortin, leptin, 5-hydroxytryptamine and brain-derived neurotrophic factor signaling axes. The identification of these pathways necessary for appropriate appetitive responses to energy state has yielded insight into normal homeostatic processes. Although monogenic alterations in each of these axes result in severe obesity, such cases remain rare. The major burden of disease is carried by those with common obesity, which has so far resisted yielding meaningful biological insights. Recent progress into the etiology of common obesity has been made with genome-wide association studies. Such studies now reveal more than 32 different candidate obesity genes, most of which are highly expressed or known to act in the CNS, emphasizing, as in rare monogenic forms of obesity, the role of the brain in predisposition to obesity.
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368
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Dietrich MO, Horvath TL. Limitations in anti-obesity drug development: the critical role of hunger-promoting neurons. Nat Rev Drug Discov 2012; 11:675-91. [DOI: 10.1038/nrd3739] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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369
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Heal DJ, Gosden J, Smith SL. What is the prognosis for new centrally-acting anti-obesity drugs? Neuropharmacology 2012; 63:132-46. [DOI: 10.1016/j.neuropharm.2012.01.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/17/2012] [Accepted: 01/20/2012] [Indexed: 11/17/2022]
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370
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O'Neil PM, Smith SR, Weissman NJ, Fidler MC, Sanchez M, Zhang J, Raether B, Anderson CM, Shanahan WR. Randomized placebo-controlled clinical trial of lorcaserin for weight loss in type 2 diabetes mellitus: the BLOOM-DM study. Obesity (Silver Spring) 2012; 20:1426-36. [PMID: 22421927 DOI: 10.1038/oby.2012.66] [Citation(s) in RCA: 370] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The BLOOM-DM (Behavioral Modification and Lorcaserin for Obesity and Overweight Management in Diabetes Mellitus) study evaluated efficacy and safety of lorcaserin for weight loss in patients with type 2 diabetes. Secondary objectives included evaluations of glycemic control, lipids, blood pressure, and quality of life. This 1-year, randomized, placebo-controlled trial enrolled 604 patients 1:1:1 to placebo, lorcaserin 10 mg once daily (QD) or lorcaserin 10 mg twice daily (BID). Patients were treated with metformin, a sulfonylurea (SFU) or both; had glycated hemoglobin (HbA(1c)) 7-10%; were 18-65 years old; and had BMI 27-45 kg/m(2). Patients received diet and exercise counseling. Safety monitoring included serial echocardiograms. Mean (± SD) age was 52.7 ± 8.7; 54.2% were women; 60.5% were white, 20.9% were African American, and 13.8% were Hispanic. Mean (± SD) weight was 103.6 ± 17.8 kg; BMI was 36.0 ± 4.5 kg/m(2). Most patients (91.7%) took metformin; 50.2% took a SFU. More patients lost ≥5% body weight with lorcaserin BID (37.5%; P < 0.001) or lorcaserin QD (44.7%; P < 0.001) vs. placebo (16.1%; modified intent to treat (MITT)/last observation carried forward (LOCF)). Least square mean (± SEM) weight change was -4.5 ± 0.35% with lorcaserin BID and -5.0 ± 0.5% with lorcaserin QD vs. -1.5 ± 0.36% with placebo (P < 0.001 for each). HbA(1c) decreased 0.9 ± 0.06 with lorcaserin BID, 1.0 ± 0.09 with lorcaserin QD, and 0.4 ± 0.06 with placebo (P < 0.001 for each); fasting glucose decreased 27.4 ± 2.5 mg/dl, -28.4 ± 3.8 mg/dl, and 11.9 ± 2.5 mg/dl, respectively (P < 0.001 for each). Symptomatic hypoglycemia occurred in 7.4% of patients on lorcaserin BID, 10.5% on lorcaserin QD, and 6.3% on placebo. Common adverse events were headache, back pain, nasopharyngitis, and nausea. Lorcaserin was associated with significant weight loss and improvement in glycemic control in patients with type 2 diabetes.
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Affiliation(s)
- Patrick M O'Neil
- Weight Management Center, Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, USA
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371
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McElroy SL, Guerdjikova AI, Mori N, O’Melia AM. Pharmacological management of binge eating disorder: current and emerging treatment options. Ther Clin Risk Manag 2012; 8:219-41. [PMID: 22654518 PMCID: PMC3363296 DOI: 10.2147/tcrm.s25574] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Growing evidence suggests that pharmacotherapy may be beneficial for some patients with binge eating disorder (BED), an eating disorder characterized by repetitive episodes of uncontrollable consumption of abnormally large amounts of food without inappropriate weight loss behaviors. In this paper, we provide a brief overview of BED and review the rationales and data supporting the effectiveness of specific medications or medication classes in treating patients with BED. We conclude by summarizing these data, discussing the role of pharmacotherapy in the BED treatment armamentarium, and suggesting future areas for research.
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Affiliation(s)
- Susan L McElroy
- Lindner Center of HOPE, Mason, and Department of Psychiatry, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Anna I Guerdjikova
- Lindner Center of HOPE, Mason, and Department of Psychiatry, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Nicole Mori
- Lindner Center of HOPE, Mason, and Department of Psychiatry, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Anne M O’Melia
- Lindner Center of HOPE, Mason, and Department of Psychiatry, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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372
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The 5-HT2C receptor agonist lorcaserin reduces nicotine self-administration, discrimination, and reinstatement: relationship to feeding behavior and impulse control. Neuropsychopharmacology 2012; 37:1177-91. [PMID: 22189292 PMCID: PMC3306879 DOI: 10.1038/npp.2011.303] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lorcaserin ((1R)-8-chloro-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine HCl) is a selective 5-HT(2C) receptor agonist with clinical efficacy in phase-III obesity trials. Based on evidence that this drug class also affects behaviors motivated by drug reinforcement, we compared the effect of lorcaserin on behavior maintained by food and nicotine reinforcement, as well as the stimulant and discriminative stimulus properties of nicotine in the rat. Acutely administered lorcaserin (0.3-3 mg/kg, subcutaneous (SC)) dose dependently reduced feeding induced by 22-h food deprivation or palatability. Effects up to 1 mg/kg were consistent with a specific effect on feeding motivation. Lorcaserin (0.6-1 mg/kg, SC) reduced operant responding for food on progressive and fixed ratio schedules of reinforcement. In this dose range lorcaserin also reversed the motor stimulant effect of nicotine, reduced intravenous self-administration of nicotine, and attenuated the nicotine cue in rats trained to discriminate nicotine from saline. Lorcaserin also reduced the reinstatement of nicotine-seeking behavior elicited by a compound cue comprising a nicotine prime and conditioned stimulus previously paired with nicotine reinforcement. Lorcaserin did not reinstate nicotine-seeking behavior or substitute for a nicotine cue. Finally, lorcaserin (0.3-1 mg/kg) reduced nicotine-induced increases in anticipatory responding, a measure of impulsive action, in rats performing the five-choice serial reaction time task. Importantly, these results indicate that lorcaserin, and likely other selective 5-HT(2C) receptor agonists, similarly affect both food- and nicotine-motivated behaviors, and nicotine-induced impulsivity. Collectively, these findings highlight a therapeutic potential for 5-HT(2C) agonists such as lorcaserin beyond obesity into addictive behaviors, such as nicotine dependence.
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373
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Bredella MA, Lin E, Brick DJ, Gerweck AV, Harrington LM, Torriani M, Thomas BJ, Schoenfeld DA, Breggia A, Rosen CJ, Hemphill LC, Wu Z, Rifai N, Utz AL, Miller KK. Effects of GH in women with abdominal adiposity: a 6-month randomized, double-blind, placebo-controlled trial. Eur J Endocrinol 2012; 166:601-11. [PMID: 22275471 PMCID: PMC3651853 DOI: 10.1530/eje-11-1068] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Abdominal adiposity is associated with increased cardiovascular risk and decreased GH secretion. The objective of our study was to determine the effects of GH on body composition and cardiovascular risk markers in abdominally obese women. MATERIALS AND METHODS In this randomized, double-blind, placebo-controlled study, 79 obese premenopausal women received GH vs placebo for 6 months. Primary endpoints were i) total abdominal (total abdominal adipose tissue, TAT) fat by computed tomography (CT) (body composition) and ii) high-sensitivity C-reactive protein (hsCRP) (cardiovascular risk marker). Body composition was assessed by CT, dual-energy X-ray absorptiometry, and proton MR spectroscopy. Serum cardiovascular risk markers, carotid intima-media thickness, and endothelial function were measured. RESULTS Mean 6-month GH dose was 1.7±0.1 mg/day, resulting in a mean IGF1 SDS increase from -1.7±0.08 to -0.1±0.3 in the GH group. GH administration decreased TAT and hsCRP compared with placebo. In addition, it increased thigh muscle mass and lean body mass and decreased subcutaneous abdominal and trunk fat, tissue plasminogen activator, apoB, and apoB/low-density lipoprotein compared with placebo. Visceral adipose tissue (VAT) decreased and intramyocellular lipid increased within the GH group. Six-month change in IGF1 levels was negatively associated with 6-month decrease in TAT and VAT. One subject had a 2 h glucose >200 mg/ml at 3 months; four subjects, three of whom were randomized to GH, had 2 h glucose levels >200 mg/ml at the end of the study. CONCLUSION GH administration in abdominally obese premenopausal women exerts beneficial effects on body composition and cardiovascular risk markers but is associated with a decrease in glucose tolerance in a minority of women.
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Affiliation(s)
- Miriam A Bredella
- Department of Radiology, Neuroendocrine Unit Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA.
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374
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Heal DJ, Gosden J, Smith SL. A review of late-stage CNS drug candidates for the treatment of obesity. Int J Obes (Lond) 2012; 37:107-17. [PMID: 22410963 DOI: 10.1038/ijo.2012.26] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Obesity is an important causative factor in morbidity, disability and premature death. Increasing levels of obesity will impose enormous health, financial and social burdens on worldwide society unless effective interventions are implemented. For many obese individuals, diet and behavioural modification need to be supplemented by pharmacotherapy. Preclinical research has revealed a greater understanding of the complex nature of the hypothalamic regulation of food intake and has generated a wide range of new molecular targets for the development of drug candidates for obesity treatment. As shown by the clinical results that have been obtained with this next generation of therapies, some approaches, for example, fixed-dose drug combinations, have already demonstrated an ability to deliver levels of efficacy that are not achievable with the current antiobesity drug therapies. The regulatory and marketing landscape for development, registration and commercialisation of novel centrally acting drugs for treatment of obesity and related metabolic disorders has changed substantially in recent years. Now a much greater emphasis is placed on tolerability and safety, as well as efficacy. In this review we briefly describe the therapeutic approaches to tackle obesity that are in late-stage clinical development. We then discuss drugs in late-stage development for the treatment of obesity and also future directions.
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Affiliation(s)
- D J Heal
- RenaSci Consultancy Limited, Biocity, Nottingham, UK.
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Abstract
The current recommendations for the treatment of obese people include increased physical activity and reduced calories intake. When the behavioral approach is not sufficient, a pharmacologic treatment is recommended. In past years, numerous drugs have been approved for the treatment of obesity; however, most of them have been withdrawn from the market because of their adverse effects. In fact, amphetamine, rimonabant and sibutramine licenses have been withdrawn due to an increased risk of psychiatric disorders and non-fatal myocardial infarction or stroke. Even if orlistat is not as effective as other drugs in reducing body weight, orlistat is presently the only available choice for the treatment of obesity because of its safety for cardiovascular events and positive effects on diabetic control. Hopefully, more effective and better tolerated anti-obesity drugs will be developed through an improved understanding of the multiple mechanisms and complex physiological systems targeting appetite.
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Affiliation(s)
- Jun Goo Kang
- Department of Endocrinology and Metabolism, Hallym University Sacred Heart Hospital, Hallym University School of Medicine, Anyang, Korea
| | - Cheol-Young Park
- Department of Endocrinology and Metabolism, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
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Sadeque AJM, Usmani KA, Palamar S, Cerny MA, Chen WG. Identification of Human UDP-Glucuronosyltransferases Involved in N-Carbamoyl Glucuronidation of Lorcaserin. Drug Metab Dispos 2012; 40:772-8. [DOI: 10.1124/dmd.111.043448] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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