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Basolo A, Burkholder J, Osgood K, Graham A, Bundrick S, Frankl J, Piaggi P, Thearle MS, Krakoff J. Exenatide has a pronounced effect on energy intake but not energy expenditure in non-diabetic subjects with obesity: A randomized, double-blind, placebo-controlled trial. Metabolism 2018; 85:116-125. [PMID: 29596853 PMCID: PMC6062468 DOI: 10.1016/j.metabol.2018.03.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 03/15/2018] [Accepted: 03/19/2018] [Indexed: 01/08/2023]
Abstract
AIMS Exenatide is a glucagon-like peptide 1 (GLP-1) mimetic which induces weight loss predominantly, it is presumed, via decreased food intake. However, circulating GLP-1 is also a determinant of energy expenditure. We sought to quantify the effect of exenatide on energy expenditure (EE) and energy intake. MATERIALS AND METHODS In this single-center, randomized double-blind placebo controlled trial, we randomized 80 healthy, non-diabetic volunteers with obesity (46 women, age: 34.4 ± 8.7 y, body fat by DXA: 44.2 ± 7.8%) to subcutaneous exenatide 10 μg twice daily or placebo. Subjects were admitted to our clinical research unit for measurement of 24 h-EE in a whole-room indirect calorimeter and ad libitum food intake using an automated vending machine paradigm before and after randomization. Furthermore, energy expenditure and ad libitum food intake measures were repeated at 24-week after readmission for 7-day inpatient stay. Body weight was obtained weekly for up to 5 weeks and was recorded at each monthly follow up visit up to 24 weeks. RESULTS Prior to randomization, participants over ate during the 3-day vending machine period in the whole study group (114.6 ± 35.2%), expressed as percentage of weight maintaining energy needs (WMEN) with those who were eventually randomized to exenatide overeating more (121.6 ± 37.7%) compared to placebo group (107.6 ± 31.5%). In the exenatide group, ad libitum absolute energy intake decreased by 1016.1 ± 724.5 kcal/day (95% CI: -1250.9 to -781.2) versus a 245.1 ± 710.5 kcal/day (95% CI: -475.4 to -14.7) decrease in placebo (Δ = -624.8 Kcal/day, p < 0.0001) whereas the reduction in ad libitum caloric intake relative to WMEN was a more modest 366.8 ± 752.1 kcal/day (95% CI: -614.0 to -119.6) decrease compared to 8.0 ± 860.1 kcal/day (95% CI: -286.8 to 270.8) reduction in placebo (Δ = -382.3 Kcal/day, p = 0.03). The decrease was uniform across all macronutrients groups. No differences in 24hEE or substrate oxidation rates were found. In the exenatide group, body weight decreased more over the 5 weeks (β = -0.039 kg/week, p = 0.02) and was lower compared to placebo at the end of fifth week (-1.48 ± 0.77 kg; 95% CI: -3.02 to 0.05, p = 0.06). At the 24-week follow up, there was no difference in energy intake between exenatide group and placebo group and the treatment group decreased 24-h EE more compared to placebo (β = -160.6 Kcal/day, 95% CI: -307.6 to 13.6, p = 0.03) compared to their pre-randomization measurement. However, this reduction was not present after adjustment for changes in FM and FFM (β = -87 kcal/day, p = 0.14). No difference was observed in body weight (Δ = -1.72 kg, 95% CI: -5.77 to 2.30, p = 0.39) in exenatide versus placebo over 24 weeks. CONCLUSION Compared with placebo, exenatide decreased early ad libitum energy intake but did not change 24 h-EE. However, the reduction was more modest in relative versus absolute terms (i.e. below that needed for WMEN). Thus, although rate of weight change was greater in the exenatide treated subjects at 5 weeks, the absolute difference in weight was not significant. These findings indicate that although exenatide reduces food intake, it may be more beneficial in blunting overeating and thus may serve to more prevent weight regain following initial weight loss.
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Affiliation(s)
- Alessio Basolo
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
| | - Joshua Burkholder
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States
| | - Kristy Osgood
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States
| | - Alexis Graham
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States
| | - Sarah Bundrick
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
| | - Joseph Frankl
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
| | - Paolo Piaggi
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
| | - Marie S Thearle
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
| | - Jonathan Krakoff
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, 4212 North 16th Street, Phoenix, AZ 85016, United States.
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Nauck MA, Jensen TJ, Rosenkilde C, Calanna S, Buse JB. Neoplasms Reported With Liraglutide or Placebo in People With Type 2 Diabetes: Results From the LEADER Randomized Trial. Diabetes Care 2018; 41:1663-1671. [PMID: 29898902 PMCID: PMC6463597 DOI: 10.2337/dc17-1825] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 04/29/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE This study explored neoplasm risk with liraglutide versus placebo in the LEADER (Liraglutide Effect and Action in Diabetes: Evaluation of Cardiovascular Outcome Results) cohort. RESEARCH DESIGN AND METHODS LEADER (NCT01179048) was an international, phase 3b, randomized, double-blind, controlled trial. Participants aged ≥50 years with type 2 diabetes and high cardiovascular risk were assigned 1:1 to receive liraglutide (≤1.8 mg daily; n = 4,668) or placebo (n = 4,672) in addition to standard care and monitored for 3.5-5 years (median follow-up 3.8 years). The occurrence of neoplasms was a prespecified, exploratory secondary end point. Post hoc analyses of the time to the first confirmed neoplasms were conducted using a Cox regression model. RESULTS Neoplasm was confirmed in 10.1% of patients with liraglutide versus 9.0% with placebo (hazard ratio [HR] 1.12 [95% CI 0.99; 1.28]). The HR (95% CI) for liraglutide versus placebo was 1.06 (0.90; 1.25) for malignant neoplasms and 1.16 (0.93; 1.44) for benign neoplasms. Sensitivity analyses excluding neoplasms occurring <1 year or <2 years after randomization and analyses by sex provided similar results. In our main analyses, the 95% CI for the HR included one for all malignant neoplasms evaluated (including pancreatic and thyroid neoplasms) except for prostate neoplasms, which occurred in fewer liraglutide-treated patients. CONCLUSIONS LEADER was not primarily designed to assess neoplasm risk. Firm conclusions cannot be made regarding numeric imbalances observed for individual neoplasm types (e.g., pancreatic cancer) that occurred infrequently. LEADER data do, however, exclude a major increase in the risk of total malignant neoplasms with liraglutide versus placebo. Additional studies are needed to assess longer-term exposure.
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Affiliation(s)
- Michael A Nauck
- Diabetes Center Bochum-Hattingen, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | | | | | | | - John B Buse
- University of North Carolina School of Medicine, Chapel Hill, NC
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253
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Blonde L, Dipp S, Cadena D. Combination Glucose-Lowering Therapy Plans in T2DM: Case-Based Considerations. Adv Ther 2018; 35:939-965. [PMID: 29777519 DOI: 10.1007/s12325-018-0694-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Indexed: 02/07/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a complex disease, and while lifestyle interventions remain the cornerstone of therapy, most patients will also require pharmacotherapy. Current diabetes treatment guidelines and algorithms recommend an individualized approach to setting glycemic goals and selecting treatment. Although a single antihyperglycemic agent may be appropriate as the initial T2DM pharmacotherapy, the progressive nature of the disease due to declining pancreatic β-cell function will result in the vast majority of T2DM patients eventually requiring two or more antihyperglycemic agents. The American Association of Clinical Endocrinologists/American College of Clinical Endocrinology T2DM management algorithm recommends initial dual agent combination therapy when a single agent is unlikely to achieve their target glycemia, i.e., for those patients with an HbA1c ≥ 7.5 and an individualized HbA1c target of < 7.5%. The American Diabetes Association Standards of Care recommend combination pharmacotherapy for those patients presenting with very elevated HbA1c levels (e.g., ≥ 9% and < 10%). Metformin (if well tolerated and not contraindicated) is the initial pharmacologic choice for most patients; selection of another antihyperglycemic agent to the regimen will depend on the presence of atherosclerotic cardiovascular disease and other patient-specific factors (e.g., age, known duration of T2DM, history of or risk for hypoglycemia and/or adverse consequences from hypoglycemia, other comorbidities, and available resources), along with drug-specific factors (e.g., risk for hypoglycemia, potential effects on weight, drug adverse event profiles, and cost). Combination therapy may be administered as a multi-pill regimen, a single-pill combination (i.e., fixed-dose combination oral therapy), or as a combination of oral and/or injectable therapies. This paper provides two illustrative case presentations to demonstrate how current treatment recommendations and algorithms can be used to guide the selection of non-insulin-based combination therapy for patients with T2DM in primary care settings and discusses the relative merits of several possible approaches for each patient. FUNDING Boehringer Ingelheim Pharmaceuticals, Inc.
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Affiliation(s)
- Lawrence Blonde
- Frank Riddick Diabetes Institute, Department of Endocrinology, Ochsner Medical Center, New Orleans, LA, USA.
| | - Susana Dipp
- Frank Riddick Diabetes Institute, Department of Endocrinology, Ochsner Medical Center, New Orleans, LA, USA
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After the LEADER trial and SUSTAIN-6, how do we explain the cardiovascular benefits of some GLP-1 receptor agonists? DIABETES & METABOLISM 2018; 43 Suppl 1:2S3-2S12. [PMID: 28431669 DOI: 10.1016/s1262-3636(17)30067-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recent cardiovascular outcome trials - the LEADER with liragutide and SUSTAIN-6 with semaglutide - have shown significant reductions of major cardiovascular (CV) events with these glucagon-like peptide (GLP)-1 receptor agonists. Progressive separation of the treatment and placebo curves, starting clearly between 12 and 18 months of the trial period, and significant reductions in the risk of myocardial infarction and stroke, indicate that the beneficial CV effects observed with GLP-1 receptor agonists could be due to an antiatherogenic effect. So far, the reasons for such an effect of GLP-1 receptor agonists have not been entirely clear, although several hypotheses may be proposed. As the reductions in glycated haemoglobin and systolic blood pressure (SBP) in these trials were modest, and both trials lasted only a short period of time, reductions in hyperglycaemia and SBP are unlikely to be involved in the beneficial CV effects of GLP-1 receptor agonists. On the other hand, their effect on lipids and, in particular, the dramatic decrease in postprandial hypertriglyceridaemia may explain their beneficial CV actions. Reduction of body weight, including a significant decrease in visceral fat in patients using GLP-1 receptor agonists, may also have beneficial CV effects by reducing chronic proatherogenic inflammation. In addition, there are in-vitro data showing a direct anti-inflammatory effect with these agents that could also be involved in their beneficial CV effects. Moreover, studies in humans have shown significant beneficial effects on ischaemic myocardium after a very short treatment period, suggesting a direct effect of GLP-1 receptor agonists on myocardium, although the precise mechanism remains unclear. Finally, as a reduction in insulin resistance has been associated with a decrease in CV risk, it cannot be ruled out that the lowering of insulin resistance induced by GLP-1 receptor agonists might also be involved in their beneficial CV actions.
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Rix I, Steen Pedersen J, Storgaard H, Gluud LL. Cardiometabolic effects of antidiabetic drugs in non-alcoholic fatty liver disease. Clin Physiol Funct Imaging 2018; 39:122-127. [PMID: 29808958 DOI: 10.1111/cpf.12526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/04/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE Non-alcoholic fatty liver disease (NAFLD) affects about 25% of the population worldwide. NAFLD may be viewed as the hepatological manifestation of metabolic syndrome. Patients with metabolic syndrome due to diabetes or obesity have an increased risk of cardiovascular disease. This narrative review describes cardiometabolic effects of antidiabetic drugs in NAFLD. METHODS We conducted a systematic search in PubMed and manually scanned bibliographies in trial databases and reference lists in relevant articles. RESULTS Heart disease is the leading cause of death in NAFLD. Conversely, NAFLD is an independent cardiovascular risk factor in patients suffering from metabolic syndrome. NAFLD is associated with markers of atherosclerosis, and patients have increased risk of ischaemic heart disease. Additionally, patients with NAFLD have increased risk of cardiac dysfunction and heart failure. There are no randomized controlled trials showing clear effects of medical treatment on clinical outcomes in patients with NAFLD. However, based on evidence from small trials and extrapolation from trials evaluating patients with type 2 diabetes, some antidiabetic drugs may be beneficial on cardiovascular function in patients with NAFLD. CONCLUSION At present, there is promising evidence of a potential effect of antidiabetic drugs for patients with NAFLD. Future studies should address the treatment of NAFLD and the liver-related consequences but also aim at improving the cardiometabolic outcomes.
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Affiliation(s)
- Iben Rix
- Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | - Julie Steen Pedersen
- Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | - Heidi Storgaard
- Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Lise Lotte Gluud
- Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
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256
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Yildirim Simsir I, Soyaltin UE, Cetinkalp S. Glucagon like peptide-1 (GLP-1) likes Alzheimer's disease. Diabetes Metab Syndr 2018; 12:469-475. [PMID: 29598932 DOI: 10.1016/j.dsx.2018.03.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 03/15/2018] [Indexed: 02/06/2023]
Abstract
Glucagon-like peptide-1 (GLP-1) is a 30 amino acid long peptide hormone derived from the proglucagon gene and secreted in the distal small intestine when food enters the duodenum. GLP-1 is also produced in the central nervous system (CNS), predominantly in the brainstem, and subsequently transported to a large number of regions in the CNS. Neuronal cells in nucleus tractus solitarius (NTS) can synthesize GLP-1 and extends to hypothalamus, some thalamic and cortical areas. A G protein coupled receptor (GPCR) provides the majority of GLP-1 actions. GLP-1 receptor activation triggers some in vivo signaling pathways. GLP-1 receptor agonists (GLP-1 RA) are used in the treatment diabetes and obesity. GLP-1 stimulates insulin secretion, inhibits glucagon secretion, decreases food intake, reduces appetite, delays gastric emptying, provides weight reduction, and protects β cells from apoptosis. Alzheimer's disease (AD) is the most prevalent form of dementia. It is characterized by cognitive insufficiencies and behavioral changes that impact memory and learning abilities, daily functioning and quality of life. Hyperinsulinemia and insulin resistance, which are known as pathophysiological features of the T2DM, have also been demonstrated to have significant impact on cognitive impairment. It is thought that GLP-1 affects neurological and cognitive functions, as well as its regulatory effect on glucose metabolism. The pathophysiological relationship between GLP-1 and AD is discussed in this review.
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Affiliation(s)
- Ilgin Yildirim Simsir
- Ege University Medical Faculty, Division of Endocrinology and Metabolism Disorders, Izmir, Turkey.
| | - Utku Erdem Soyaltin
- Ege University Medical Faculty, Division of Endocrinology and Metabolism Disorders, Izmir, Turkey
| | - Sevki Cetinkalp
- Ege University Medical Faculty, Division of Endocrinology and Metabolism Disorders, Izmir, Turkey
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257
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van Baar ACG, Prodan A, Wahlgren CD, Poulsen SS, Knop FK, Groen AK, Bergman JJ, Nieuwdorp M, Levin E. Duodenal L cell density correlates with features of metabolic syndrome and plasma metabolites. Endocr Connect 2018; 7:673-680. [PMID: 29669802 PMCID: PMC5952241 DOI: 10.1530/ec-18-0094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 04/18/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Enteroendocrine cells are essential for the regulation of glucose metabolism, but it is unknown whether they are associated with clinical features of metabolic syndrome (MetS) and fasting plasma metabolites. OBJECTIVE We aimed to identify fasting plasma metabolites that associate with duodenal L cell, K cell and delta cell densities in subjects with MetS with ranging levels of insulin resistance. RESEARCH DESIGN AND METHODS In this cross-sectional study, we evaluated L, K and delta cell density in duodenal biopsies from treatment-naïve males with MetS using machine-learning methodology. RESULTS We identified specific clinical biomarkers and plasma metabolites associated with L cell and delta cell density. L cell density was associated with increased plasma metabolite levels including symmetrical dimethylarginine, 3-aminoisobutyric acid, kynurenine and glycine. In turn, these L cell-linked fasting plasma metabolites correlated with clinical features of MetS. CONCLUSIONS Our results indicate a link between duodenal L cells, plasma metabolites and clinical characteristics of MetS. We conclude that duodenal L cells associate with plasma metabolites that have been implicated in human glucose metabolism homeostasis. Disentangling the causal relation between L cells and these metabolites might help to improve the (small intestinal-driven) pathophysiology behind insulin resistance in human obesity.
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Affiliation(s)
- Annieke C G van Baar
- Department of Gastroenterology and HepatologyAcademic Medical Center, Amsterdam, the Netherlands
| | - Andrei Prodan
- Department of Vascular MedicineAcademic Medical Center, Amsterdam, the Netherlands
| | - Camilla D Wahlgren
- Center for Diabetes ResearchGentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Steen S Poulsen
- Department of Biomedical SciencesFaculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic ResearchFaculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Filip K Knop
- Center for Diabetes ResearchGentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic ResearchFaculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical MedicineFaculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Albert K Groen
- Department of Vascular MedicineAcademic Medical Center, Amsterdam, the Netherlands
- Department of Laboratory MedicineUniversity of Groningen, University Medical Center, Groningen, the Netherlands
| | - Jacques J Bergman
- Department of Gastroenterology and HepatologyAcademic Medical Center, Amsterdam, the Netherlands
| | - Max Nieuwdorp
- Department of Vascular MedicineAcademic Medical Center, Amsterdam, the Netherlands
- Department of Internal MedicineVUMC Free University, Amsterdam, the Netherlands
- Wallenberg LaboratorySahlgrenska Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Evgeni Levin
- Department of Vascular MedicineAcademic Medical Center, Amsterdam, the Netherlands
- Horaizon BVDelft, the Netherlands
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Mubarak HA, Mahmoud MM, Shoukry HS, Merzeban DH, Sayed SS, Rashed LA. Protective effects of melatonin and glucagon-like peptide-1 receptor agonist (liraglutide) on gastric ischaemia-reperfusion injury in high-fat/sucrose-fed rats. Clin Exp Pharmacol Physiol 2018; 45:934-942. [PMID: 29697857 DOI: 10.1111/1440-1681.12956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/18/2018] [Accepted: 04/18/2018] [Indexed: 01/13/2023]
Abstract
Ischaemia-reperfusion (I-R) injury is a serious pathology that is often encountered with thrombotic events, during surgery when blood vessels are cross-clamped, and in organs for transplantation. Increased oxidative stress is the main pathology in I-R injury, as assessed in studies on the heart, kidney, and brain with little data available on gastric I-R (GI-R). Liraglutide is a GLP-1 receptor agonist that has insulinotropic and weight reducing actions, and melatonin that has been much studied as a chronotropic hormone; have also studied as being anti-oxidative stress agents. Herein, we aimed to explore the effects of liraglutide and melatonin on GI-R injury with high-fat/sucrose diet. Rats were divided into six groups; two diet-control, two melatonin- and two liraglutide-pretreated groups. All rats were subjected to 30 minutes of gastric ischaemia followed by 1 hour of reperfusion. Gastric tissues were assessed for the percentage of DNA fragmentation, myeloperoxidase activity, total oxidant status, total antioxidant capacity, oxidative stress index, BMI and histopathological examination. We showed that high-fat feeding for four weeks prior to GI-R significantly increased BMI, oxidative stress indices and decreased total antioxidant capacity, with a neutral effect on apoptosis compared to controls. Pretreatment with either melatonin (10 mg/kg per day orally) or liraglutide (25 μg/kg per day ip) reverses these effects. Furthermore, both drugs reduced weight only in HFS-fed rats. Both liraglutide and melatonin have nearly similar protective effects on gastric I-R injury through decreasing the oxidative stress and apoptosis.
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Affiliation(s)
- Hanan A Mubarak
- Department of Medical Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Manal M Mahmoud
- Department of Medical Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Heba S Shoukry
- Department of Medical Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Dina H Merzeban
- Department of Medical Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
- Physiology Department, Faculty of Medicine, Fayoum University, Fayoum, Egypt
| | - Safinaz S Sayed
- Department of Histology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Laila A Rashed
- Department of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
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Kapeluto J, Tchernof A, Biertho L. Surgery for Diabetes: Clinical and Mechanistic Aspects. Can J Diabetes 2018; 41:392-400. [PMID: 28739097 DOI: 10.1016/j.jcjd.2017.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 05/16/2017] [Accepted: 05/24/2017] [Indexed: 01/04/2023]
Abstract
According to the most recent publication by the Canadian Public Health Agency, obesity affects 25% of adults. In addition, there is a clear association between the recent rise in obesity and the increased prevalence of type 2 diabetes. Medical therapy for obesity has shown limited long-term effectiveness, and surgical treatment is now recognized by medical authorities as part of the armamentarium for the management of type 2 diabetes in severely obese patients. The current indications for obesity surgery and postoperative management are reviewed. The choice of surgery should balance expected benefits associated with weight loss (including remission rate of type 2 diabetes), side effects and the risks for early and long-term complications. Long-term outcomes of metabolic surgery for diabetes vary according to the type of surgery (ranging between 20% and 90% remission rates) and the underlying metabolic changes. Several controlled trials have been published in recent years confirming the superiority of metabolic surgery over medical treatment for the management of type 2 diabetes associated with severe obesity. Some of the known underlying mechanisms of action include a combination of caloric restriction, hormonal changes, decreased nutrient absorption and changes in bile acids, microbiota and incretins. Further research is needed to clarify the mechanistic changes associated with each surgical procedure and their respective long-term outcomes.
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Affiliation(s)
- Jordanna Kapeluto
- Department of Bariatric Surgery, Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada
| | - André Tchernof
- Department of Bariatric Surgery, Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada
| | - Laurent Biertho
- Department of Bariatric Surgery, Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada.
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260
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Tong L, Pan C, Wang H, Bertolini M, Lew E, Meneghini LF. Impact of delaying treatment intensification with a glucagon-like peptide-1 receptor agonist in patients with type 2 diabetes uncontrolled on basal insulin: A longitudinal study of a US administrative claims database. Diabetes Obes Metab 2018; 20:831-839. [PMID: 29119712 PMCID: PMC5887884 DOI: 10.1111/dom.13156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 10/16/2017] [Accepted: 11/04/2017] [Indexed: 01/15/2023]
Abstract
AIM To evaluate the effect of delaying treatment intensification with a glucagon-like peptide-1 receptor agonist (GLP-1 RA) on clinical and economic outcomes in patients with type 2 diabetes (T2D). METHODS We conducted a retrospective observational claims study using IMPACT (Impact National Managed Care Benchmark Database) in adult patients with T2D who initiated basal insulin between January 1, 2005 and December 31, 2012, with or without OADs, who remained uncontrolled (glycated haemoglobin [HbA1c] ≥7.0%). Patients were categorized into 3 groups: early, delayed, and no intensification with a GLP-1 RA. We evaluated changes from baseline to follow-up at 12 months for HbA1c level, rate of hypoglycaemic events, and healthcare costs, and we assessed the association between baseline patient characteristics and subsequent treatment intensification. RESULTS A total of 139 patients (9.0% of 1552 eligible patients) met criteria for inclusion in the early intensification group, 588 patients (37.9%) met criteria for inclusion in the delayed intensification group, and 825 patients (53.2%) met criteria for inclusion in the no intensification group. Mean baseline HbA1c values were 9.16%, 9.07%, and 9.34%, respectively. At follow-up, delayed intensification was associated with significantly smaller decreases in HbA1c from baseline (-0.68%) compared with early intensification (-1.01%). Rates of overall hypoglycaemia were numerically greater in the delayed intensification group than in the early intensification group (0.26 vs 0.06 events/patient-years of exposure, respectively). Change in semi-annual total healthcare costs was greater in the no intensification group (+5266 USD) compared with the early intensification group (-560 USD) and the delayed intensification group (+1943 USD). CONCLUSIONS Timely addition of a GLP-1 RA to therapy for patients with T2D who were not adequately controlled with basal insulin is associated with better clinical and economic outcomes.
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Affiliation(s)
| | | | | | | | | | - Luigi F. Meneghini
- University of Texas Southwestern Medical Center and Parkland Health & Hospital SystemDallasTexas
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Mulvaney CA, Duarte GS, Menon S, Handley J, Emsley HC. GLP-1 receptor agonists for Parkinson's disease. Hippokratia 2018. [DOI: 10.1002/14651858.cd012990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Gonçalo S Duarte
- Faculdade de Medicina de Lisboa; Laboratório de Farmacologia Clínica e Terapêutica; Avenida Professor Egas Moniz Lisboa Lisboa Portugal 1649-028
- Instituto de Medicina Molecular; Clinical Pharmacology Unit; Av. Prof. Egas Moniz Lisboa Portugal 1649-028
| | - Suresh Menon
- McMaster University; Department of Medicine; 237 Barton Street East Mailbox 63 Hamilton Ontario Canada L8L 2X2
| | - Joel Handley
- Lancaster University; Lancaster Medical School; Lancaster UK LA1 4YG
- Salford Royal Hospital; Department of Neurology; Salford UK
| | - Hedley C.A. Emsley
- Lancaster University; Lancaster Medical School; Lancaster UK LA1 4YG
- Lancashire Teaching Hospitals NHS Foundation Trust; Department of Neurology; Department of Neurology, Royal Preston Hospital Sharoe Green Lane, Fulwood Preston UK PR2 9HT
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262
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Wismann P, Pedersen SL, Hansen G, Mannerstedt K, Pedersen PJ, Jeppesen PB, Vrang N, Fosgerau K, Jelsing J. Novel GLP-1/GLP-2 co-agonists display marked effects on gut volume and improves glycemic control in mice. Physiol Behav 2018. [PMID: 29540315 DOI: 10.1016/j.physbeh.2018.03.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIM Analogues of several gastrointestinal peptide hormones have been developed into effective medicines for treatment of diseases such as type 2 diabetes mellitus (T2DM), obesity and short bowel syndrome (SBS). In this study, we aimed to explore whether the combination of glucagon-like peptide-1 (GLP-1) and glucagon-like peptide-2 (GLP-2) into a potent co-agonist could provide additional benefits compared to existing monotherapies. METHODS A short-acting (GUB09-123) and a half-life extended (GUB09-145) GLP-1/GLP-2 co-agonist were generated using solid-phase peptide synthesis and tested for effects on food intake, body weight, glucose homeostasis, and gut proliferation in lean mice and in diabetic db/db mice. RESULTS Sub-chronic administration of GUB09-123 to lean mice significantly reduced food intake, improved glucose tolerance, and increased gut volume, superior to monotherapy with the GLP-2 analogue teduglutide. Chronic administration of GUB09-123 to diabetic mice significantly improved glycemic control and showed persistent effects on gastric emptying, superior to monotherapy with the GLP-1 analogue liraglutide. Due to the short-acting nature of the molecule, no effects on body weight were observed, whereas a marked and robust intestinotrophic effect on mainly the small intestine volume and surface area was obtained. In contrast to GUB09-123, sub-chronic administration of a half-life extended GUB09-145 to lean mice caused marked dose-dependent effects on body weight while maintaining its potent intestinotrophic effect. CONCLUSION Our data demonstrate that the GLP-1/GLP-2 co-agonists have effects on gut morphometry, showing a marked increase in intestinal volume and mucosal surface area. Furthermore, effects on glucose tolerance and long-term glycemic control are evident. Effects on body weight and gastric emptying are also observed depending on the pharmacokinetic properties of the molecule. We suggest that this novel co-agonistic approach could exemplify a novel concept for treatment of T2DM or SBS.
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Affiliation(s)
| | | | - Gitte Hansen
- Gubra ApS, Hørsholm Kongevej 11B, Hørsholm, DK-2970, Denmark
| | | | | | - Palle B Jeppesen
- Rigshospitalet CA-2121, Blegdamsvej 9, Copenhagen DK-2100, Denmark
| | - Niels Vrang
- Gubra ApS, Hørsholm Kongevej 11B, Hørsholm, DK-2970, Denmark
| | - Keld Fosgerau
- Gubra ApS, Hørsholm Kongevej 11B, Hørsholm, DK-2970, Denmark
| | - Jacob Jelsing
- Gubra ApS, Hørsholm Kongevej 11B, Hørsholm, DK-2970, Denmark
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263
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Lally J, O’ Loughlin A, Stubbs B, Guerandel A, O’Shea D, Gaughran F. Pharmacological management of diabetes in severe mental illness: a comprehensive clinical review of efficacy, safety and tolerability. Expert Rev Clin Pharmacol 2018; 11:411-424. [DOI: 10.1080/17512433.2018.1445968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- John Lally
- Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
- Department of Psychiatry, School of Medicine and Medical Sciences, University College Dublin, St Vincent’s University Hospital, Dublin, Ireland
- Department of Psychiatry, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | | | - Brendon Stubbs
- Psychological Medicine Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, UK
- Physiotherapy Department, South London and Maudsley NHS Foundation Trust, London,UK
| | - Allys Guerandel
- Department of Psychiatry, School of Medicine and Medical Sciences, University College Dublin, St Vincent’s University Hospital, Dublin, Ireland
| | - Donal O’Shea
- Education Research Centre, St. Vincent’s University Hospital, Dublin, Ireland
- Endocrine Unit, St Columcille’s Hospital, Loughlinstown, County Dublin, Ireland
| | - Fiona Gaughran
- Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
- National Psychosis Service, South London and Maudsley NHS Foundation trust, London, UK
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Bessesen DH, Van Gaal LF. Progress and challenges in anti-obesity pharmacotherapy. Lancet Diabetes Endocrinol 2018; 6:237-248. [PMID: 28919062 DOI: 10.1016/s2213-8587(17)30236-x] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 01/02/2023]
Abstract
Obesity is a serious and growing worldwide health challenge. Healthy lifestyle choices are the foundation of obesity treatment. However, weight loss can lead to physiological adaptations that promote weight regain. As a result, lifestyle treatment alone typically produces only modest weight loss that is difficult to sustain. In other metabolic diseases, pharmacotherapy is an accepted adjunct to lifestyle. Several anti-obesity drugs have been approved in the USA, European Union, Australia, and Japan including sympathomimetics, pancreatic lipase inhibitors, GABAA receptor activators, a serotonin 2C receptor agonist, opioid antagonist, dopamine-norepinephrine reuptake inhibitor, and glucagon-like peptide-1 (GLP-1) receptor agonists. These drugs vary in their efficacy and side-effect profiles but all provide greater weight loss than do lifestyle changes alone. Even though obesity is widespread and associated with adverse health consequences, and anti-obesity drugs can help people to lose weight, very few patients use these drugs partly because of concerns about safety and efficacy, but also because of inadequate health insurance coverage. Despite great advances in our understanding of the biology of weight regulation, many clinicians still believe that patients with obesity should have the willpower to eat less. The tendency to hold the patient with obesity responsible for their condition can be a barrier to greater acceptance of anti-obesity drugs as appropriate options for treatment. Physicians should be comfortable discussing the risks and benefits of these drugs, and health insurance companies should provide reasonable coverage for their use in patients who are most likely to benefit. Although few promising anti-obesity medications are in the drug-development pipeline, the most promising drugs are novel molecules that are co-agonists for multiple gut hormones including GLP-1, glucagon, and gastric inhibitory peptide.
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Affiliation(s)
- Daniel H Bessesen
- School of Medicine, Division of Endocrinology, Metabolism and Diabetes, Denver Health Medical Center, University of Colorado, Denver, CO, USA.
| | - Luc F Van Gaal
- Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
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265
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Oktay AA, Akturk HK, Esenboğa K, Javed F, Polin NM, Jahangir E. Pathophysiology and Prevention of Heart Disease in Diabetes Mellitus. Curr Probl Cardiol 2018; 43:68-110. [DOI: 10.1016/j.cpcardiol.2017.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Jia X, Alam M, Ye Y, Bajaj M, Birnbaum Y. GLP-1 Receptor Agonists and Cardiovascular Disease: a Meta-Analysis of Recent Cardiac Outcome Trials. Cardiovasc Drugs Ther 2018; 32:65-72. [DOI: 10.1007/s10557-018-6773-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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267
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Morgan CL, Qiao Q, Grandy S, Johnsson K, Jenkins-Jones S, Holden S, Currie CJ. Glucose Control and Weight Change Associated with Treatment with Exenatide Compared with Basal Insulin: A Retrospective Study. Diabetes Ther 2018; 9:269-283. [PMID: 29318537 PMCID: PMC5801245 DOI: 10.1007/s13300-017-0359-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION The aim of the study was to compare glycemic and weight change outcomes for type 2 diabetes patients treated with either exenatide once-weekly (EQW) or exenatide twice-daily (EBID) with those patients treated with basal insulin (BI). METHODS Retrospective data (2010-2014) were extracted from the Clinical Practice Research Datalink, a UK primary care database. Patients previously naïve to injectable therapy initiating EQW, EBID, or BI were extracted and matched by propensity score within two analyses (EQW vs BI and EBID vs BI). Absolute and relative change in HbA1c and weight from baseline and the proportion of patients achieving HbA1c ≤ 7.0% (53 mmol/mol) combined with weight reduction targets of (1) any weight loss or (2) ≥ 5.0% from baseline were compared at 6 and 12-24 months. RESULTS A total of 485 patients initiated EQW, 3573 EBID, and 13,503 BI. In the propensity matched EQW versus BI analysis, mean HbA1c decreased with changes of - 1.33% (- 14.5 mmol/mol) and - 1.24% (- 13.5 mmol/mol) at 6 months and - 1.19% (- 13.0 mmol/mol) and - 1.17% (- 12.8 mmol/mol) at 12-24 months, respectively. Respective weight change was - 3.7 kg versus + 1.2 kg (p < 0.001) and - 3.2 kg versus + 2.5 kg (p < 0.001). Significantly more EQW patients achieved the combined HbA1c ≤ 7.0% (53 mmol/mol) and weight loss target (22.4% versus 9.9% at 6 months and 18.2% versus 8.0% at 12-24 months, respectively) and HbA1c ≤ 7.0% (53 mmol/mol) and minimum 5% weight loss (11.8% versus 3.7% at 6 months, and 8.0% versus 0.0% at 12-24 months). For EBID versus BI, similar results were found. CONCLUSION In this real-world data analysis, exenatide QW and exenatide BID were associated with similar glycemic control and greater weight reduction compared with basal insulin.
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268
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Brandt SJ, Götz A, Tschöp MH, Müller TD. Gut hormone polyagonists for the treatment of type 2 diabetes. Peptides 2018; 100:190-201. [PMID: 29412819 PMCID: PMC5805859 DOI: 10.1016/j.peptides.2017.12.021] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 12/21/2017] [Accepted: 12/21/2017] [Indexed: 12/20/2022]
Abstract
Chemical derivatives of the gut-derived peptide hormone glucagon-like peptide 1 (GLP-1) are among the best-in-class pharmacotherapies to treat obesity and type 2 diabetes. However, GLP-1 analogs have modest weight lowering capacity, in the range of 5-10%, and the therapeutic window is hampered by dose-dependent side effects. Over the last few years, a new concept has emerged: combining the beneficial effects of several key metabolic hormones into a single molecular entity. Several unimolecular GLP-1-based polyagonists have shown superior metabolic action compared to GLP-1 monotherapies. In this review article, we highlight the history of polyagonists targeting the receptors for GLP-1, GIP and glucagon, and discuss recent progress in expanding of this concept to now allow targeted delivery of nuclear hormones via GLP-1 and other gut hormones, as a novel approach towards more personalized pharmacotherapies.
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Affiliation(s)
- Sara J Brandt
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Business Campus Garching, Parkring 13, 85748 Garching, Germany
| | - Anna Götz
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Business Campus Garching, Parkring 13, 85748 Garching, Germany; Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany; Institute for Diabetes und Regeneration, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Business Campus Garching, Parkring 13, 85748, Garching, Germany
| | - Matthias H Tschöp
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Business Campus Garching, Parkring 13, 85748 Garching, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany; Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
| | - Timo D Müller
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Business Campus Garching, Parkring 13, 85748 Garching, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany.
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270
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Waldrop G, Zhong J, Peters M, Goud A, Chen YH, Davis SN, Mukherjee B, Rajagopalan S. Incretin-based therapy in type 2 diabetes: An evidence based systematic review and meta-analysis. J Diabetes Complications 2018; 32:113-122. [PMID: 29074120 DOI: 10.1016/j.jdiacomp.2016.08.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/14/2016] [Accepted: 08/22/2016] [Indexed: 12/28/2022]
Abstract
Incretin based therapies such as dipeptidyl peptidase-4 inhibitors (DPP-4i) and glucagon-like peptide-1 receptor agonists (GLP-1Ra) are increasingly used for the treatment of Type 2 diabetes mellitus. In clinical practice and in previously performed clinical trials, these agents are often used in combination with other oral anti-diabetic agents (OADs) and Insulin. Prior meta-analytic reviews however do not adequately address the impact of background therapy and active comparator arms. Accordingly, we aimed to further investigate the efficacy of incretin based therapies by updating existing reviews by including clinical trial evidence after 2008; estimating the pooled effect of incretin therapies on glycemic efficacy and weight-loss, stratified by comparator therapy (placebo, mono-therapy, etc.), estimating the impact of background OADs and within class (GLP-1Ra or DPP-4i) comparative efficacy, on glycemia control. 82 randomized controlled trials after 2008 with glycemic control and weight loss as primary end-points were included. Both DPP-4i and GLP-1Ra reduced HbA1c, but only GLP-1Ra caused weight loss when compared to either active comparator drugs or placebo. GLP-1Ra were more effective than DPP-4i in glycemia lowering. Long acting GLP-1Ra were more effective in HbA1c lowering than short-acting agents but with similar weight loss effect. The effect of DPP-4i incretin glycemic efficacy was not modified by background therapy used in the study.
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Affiliation(s)
- Greer Waldrop
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Jixin Zhong
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA.
| | - Matthew Peters
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Aditya Goud
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Yin-Hsiu Chen
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Stephen N Davis
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Bhramar Mukherjee
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA
| | - Sanjay Rajagopalan
- Department of Medicine, University of Maryland Baltimore, MD, USA; Department of Biostatistics, University of Michigan, Ann Arbor, USA.
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271
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Zhao L, Chen Y, Xia F, Abudukerimu B, Zhang W, Guo Y, Wang N, Lu Y. A Glucagon-Like Peptide-1 Receptor Agonist Lowers Weight by Modulating the Structure of Gut Microbiota. Front Endocrinol (Lausanne) 2018; 9:233. [PMID: 29867765 PMCID: PMC5966539 DOI: 10.3389/fendo.2018.00233] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 04/23/2018] [Indexed: 12/11/2022] Open
Abstract
In addition to improving glucose metabolism, liraglutide, a glucagon-like peptide-1 receptor agonist, has weight-loss effects. The underlying mechanisms are not completely understood. This study was performed to explore whether liraglutide could lower weight by modulating the composition of the gut microbiota in simple obese and diabetic obese rats. In our study, Wistar and Goto-Kakizaki (GK) rats were randomly treated with liraglutide or normal saline for 12 weeks. The biochemical parameters and metabolic hormones were measured. Hepatic glucose production and lipid metabolism were also assessed with isotope tracers. Changes in gut microbiota were analyzed by 16S rRNA gene sequencing. Both glucose and lipid metabolism were significantly improved by liraglutide. Liraglutide lowered body weight independent of glycemia status. The abundance and diversity of gut microbiota were considerably decreased by liraglutide. Liraglutide also decreased obesity-related microbial phenotypes and increased lean-related phenotypes. In conclusion, liraglutide can prevent weight gain by modulating the gut microbiota composition in both simple obese and diabetic obese subjects.
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Affiliation(s)
| | | | | | | | | | - Yuyu Guo
- *Correspondence: Yuyu Guo, ; Ningjian Wang, ; Yingli Lu,
| | - Ningjian Wang
- *Correspondence: Yuyu Guo, ; Ningjian Wang, ; Yingli Lu,
| | - Yingli Lu
- *Correspondence: Yuyu Guo, ; Ningjian Wang, ; Yingli Lu,
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Velojić-Golubović M. LIRAGLUTIDE AND INSULIN DETEMIR IN COMBINATION - A NEW THERAPEUTIC OPTION IN PATIENTS WITH TYPE 2 DIABETES: A CASE REPORT. ACTA MEDICA MEDIANAE 2017. [DOI: 10.5633/amm.2017.0421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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273
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Brown A, Guess N, Dornhorst A, Taheri S, Frost G. Insulin-associated weight gain in obese type 2 diabetes mellitus patients: What can be done? Diabetes Obes Metab 2017; 19:1655-1668. [PMID: 28509408 DOI: 10.1111/dom.13009] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 05/06/2017] [Accepted: 05/11/2017] [Indexed: 12/11/2022]
Abstract
Insulin therapy (IT) is initiated for patients with type 2 diabetes mellitus when glycaemic targets are not met with diet and other hypoglycaemic agents. The initiation of IT improves glycaemic control and reduces the risk of microvascular complications. There is, however, an associated weight gain following IT, which may adversely affect diabetic and cardiovascular morbidity and mortality. A 3 to 9 kg insulin-associated weight gain (IAWG) is reported to occur in the first year of initiating IT, predominantly caused by adipose tissue. The potential causes for this weight gain include an increase in energy intake linked to a fear of hypoglycaemia, a reduction in glycosuria, catch-up weight, and central effects on weight and appetite regulation. Patients with type 2 diabetes who are receiving IT often have multiple co-morbidities, including obesity, that are exacerbated by weight gain, making the management of their diabetes and obesity challenging. There are several treatment strategies for patients with type 2 diabetes, who require IT, that attenuate weight gain, help improve glycaemic control, and help promote body weight homeostasis. This review addresses the effects of insulin initiation and intensification on IAWG, and explores its potential underlying mechanisms, the predictors for this weight gain, and the available treatment options for managing and limiting weight gain.
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Affiliation(s)
- Adrian Brown
- Department of Medicine, Faculty of Medicine, Nutrition and Dietetic Research Group, Imperial College, London, UK
| | - Nicola Guess
- Department of Medicine, Faculty of Medicine, Nutrition and Dietetic Research Group, Imperial College, London, UK
- Division of Diabetes and Nutritional Sciences, Kings College London, London, UK
| | - Anne Dornhorst
- Department of Metabolic Medicine, Imperial College London, London, UK
| | - Shahrad Taheri
- Department of Metabolic Medicine, Imperial College London, London, UK
- Department of Medicine and Clinical Research Core, Weill Cornell Medicine, New York, New York
- Department of Medicine and Clinical Research Core, Weill Cornell Medicine, Doha, Qatar
| | - Gary Frost
- Department of Medicine, Faculty of Medicine, Nutrition and Dietetic Research Group, Imperial College, London, UK
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Coveleskie K, Kilpatrick LA, Gupta A, Stains J, Connolly L, Labus JS, Sanmiguel C, Mayer EA. The effect of the GLP-1 analogue Exenatide on functional connectivity within an NTS-based network in women with and without obesity. Obes Sci Pract 2017; 3:434-445. [PMID: 29259802 PMCID: PMC5729499 DOI: 10.1002/osp4.124] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 01/05/2023] Open
Abstract
Objective The differential effect of GLP-1 agonist Exenatide on functional connectivity of the nucleus tractus solitaries (NTS), a key region associated with homeostasis, and on appetite-related behaviours was investigated in women with normal weight compared with women with obesity. Methods Following an 8-h fast, 19 female subjects (11 lean, 8 obese) participated in a 2-d double blind crossover study. Subjects underwent functional magnetic resonance imaging at fast and 30-min post subcutaneous injection of 5 μg of Exenatide or placebo. Functional connectivity was examined with the NTS. Drug-induced functional connectivity changes within and between groups and correlations with appetite measures were examined in a region of interest approach focusing on the thalamus and hypothalamus. Results Women with obesity reported less hunger after drug injection. Exenatide administration increased functional connectivity of the left NTS with the left thalamus and hypothalamus in the obese group only and increased the correlation between NTS functional connectivity and hunger scores in all subjects, but more so in the obese. Conclusions Obesity can impact the effects of Exenatide on brain connectivity, specifically in the NTS and is linked to changes in appetite control. This has implications for the use of GLP-1 analogues in therapeutic interventions.
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Affiliation(s)
- K. Coveleskie
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
| | - L. A. Kilpatrick
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
- Vatche and Tamar Manoukin Division of Digestive DiseasesUCLALos AngelesCAUSA
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
| | - A. Gupta
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
- Vatche and Tamar Manoukin Division of Digestive DiseasesUCLALos AngelesCAUSA
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
| | - J. Stains
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
| | - L. Connolly
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
| | - J. S. Labus
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
- Vatche and Tamar Manoukin Division of Digestive DiseasesUCLALos AngelesCAUSA
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
| | - C. Sanmiguel
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
- Vatche and Tamar Manoukin Division of Digestive DiseasesUCLALos AngelesCAUSA
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
| | - E. A. Mayer
- G Oppenheimer Center for Neurobiology of Stress and Resilience, Ingestive Behavior & Obesity ProgramUCLALos AngelesCAUSA
- Vatche and Tamar Manoukin Division of Digestive DiseasesUCLALos AngelesCAUSA
- Ahmanson‐Lovelace Brain Mapping CenterUCLALos AngelesCAUSA
- David Geffen School of MedicineUniversity of California Los Angeles (UCLA)Los AngelesCAUSA
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275
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Ten Kulve JS, Veltman DJ, Gerdes VEA, van Bloemendaal L, Barkhof F, Deacon CF, Holst JJ, Drent ML, Diamant M, IJzerman RG. Elevated Postoperative Endogenous GLP-1 Levels Mediate Effects of Roux-en-Y Gastric Bypass on Neural Responsivity to Food Cues. Diabetes Care 2017; 40:1522-1529. [PMID: 29025878 DOI: 10.2337/dc16-2113] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 08/14/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVE It has been suggested that weight reduction and improvements in satiety after Roux-en-Y gastric bypass (RYGB) are partly mediated via postoperative neuroendocrine changes. Glucagon-like peptide-1 (GLP-1) is a gut hormone secreted after food ingestion and is associated with appetite and weight reduction, mediated via effects on the central nervous system (CNS). Secretion of GLP-1 is greatly enhanced after RYGB. We hypothesized that postoperative elevated GLP-1 levels contribute to the improved satiety regulation after RYGB via effects on the CNS. RESEARCH DESIGN AND METHODS Effects of the GLP-1 receptor antagonist exendin 9-39 (Ex9-39) and placebo were assessed in 10 women before and after RYGB. We used functional MRI to investigate CNS activation in response to visual food cues (pictures) and gustatory food cues (consumption of chocolate milk), comparing results with Ex9-39 versus placebo before and after RYGB. RESULTS After RYGB, CNS activation was reduced in the rolandic operculum and caudate nucleus in response to viewing food pictures (P = 0.03) and in the insula in response to consumption of palatable food (P = 0.003). GLP-1 levels were significantly elevated postoperatively (P < 0.001). After RYGB, GLP-1 receptor blockade resulted in a larger increase in activation in the caudate nucleus in response to food pictures (P = 0.02) and in the insula in response to palatable food consumption (P = 0.002). CONCLUSIONS We conclude that the effects of RYGB on CNS activation in response to visual and gustatory food cues may be mediated by central effects of GLP-1. Our findings provide further insights into the mechanisms underlying the weight-lowering effects of RYGB.
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Affiliation(s)
- Jennifer S Ten Kulve
- Diabetes Center/Department of Internal Medicine, VU University Medical Center, Amsterdam, the Netherlands
| | - Dick J Veltman
- Department of Psychiatry, VU University Medical Center, Amsterdam, the Netherlands
| | - Victor E A Gerdes
- Department of Internal Medicine, Slotervaart Hospital, Amsterdam, the Netherlands
| | - Liselotte van Bloemendaal
- Diabetes Center/Department of Internal Medicine, VU University Medical Center, Amsterdam, the Netherlands
| | - Frederik Barkhof
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, the Netherlands
| | - Carolyn F Deacon
- Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Jens J Holst
- Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Madeleine L Drent
- Department of Internal Medicine/Endocrine Section, VU University Medical Center, and Department of Clinical Neuropsychology, VU University, Amsterdam, the Netherlands
| | - Michaela Diamant
- Diabetes Center/Department of Internal Medicine, VU University Medical Center, Amsterdam, the Netherlands
| | - Richard G IJzerman
- Diabetes Center/Department of Internal Medicine, VU University Medical Center, Amsterdam, the Netherlands
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276
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Carls GS, Tuttle E, Tan RD, Huynh J, Yee J, Edelman SV, Polonsky WH. Understanding the Gap Between Efficacy in Randomized Controlled Trials and Effectiveness in Real-World Use of GLP-1 RA and DPP-4 Therapies in Patients With Type 2 Diabetes. Diabetes Care 2017; 40:1469-1478. [PMID: 28801475 DOI: 10.2337/dc16-2725] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/27/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The objective of this study was to estimate and explain the gap between clinical efficacy and real-world (RW) effectiveness of type 2 diabetes medications. RESEARCH DESIGN AND METHODS This mixed-methods quasi-experimental study used retrospective claims (Optum/Humedica) to compare the change in HbA1c of RW patients with type 2 diabetes 12 months after starting a glucagon-like peptide 1 receptor agonist (GLP-1 RA) or dipeptidyl peptidase 4 (DPP-4) inhibitor with published findings from randomized controlled trials (RCTs) evaluating these drugs. Selected RW patients were similar to RCT patients, and regression analysis was used in the RW data to adjust for differences between poorly adherent and adherent patients to explain why RCT and RW findings may differ. RESULTS RW patients initiating a GLP-1 RA (n = 221) or a DPP-4 (n = 652) experienced smaller reductions in HbA1c (GLP-1 RA: -0.52% [-6 mmol/mol], DPP-4: -0.51% [-6 mmol/mol])than reported in RCTs (-1.30% [-14 mmol/mol] from seven GLP-1 RA RCTs, n = 2,600; -0.68% [-8 mmol/mol] from four DPP-4 RCTs, n = 1,889). Baseline HbA1c, additional medications, and adherence were significant explanatory factors in the RW HbA1c change. Modeled estimates of RCT efficacy (-1.04% GLP-1 RA [-12 mmol/mol], -0.69% DPP-4 [-8 mmol/mol]) were within the RCTs' reported range (GLP-1 RA: -0.84% to -1.60% [-9 to -18 mmol/mol], DPP-4: -0.47% to -0.90% [-5 to -10 mmol/mol]). Poor medication adherence accounted for approximately three-fourths of the gap between RW and expected RCT results (gap = 0.51% [6 mmol/mol] GLP-1 RA; 0.18% [3 mmol/mol] DPP-4). CONCLUSIONS Poor medication adherence is primarily why RW effectiveness is significantly less than RCT efficacy, suggesting an urgent need to effectively address adherence among patients with type 2 diabetes.
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Affiliation(s)
| | | | | | | | - John Yee
- Intarcia Therapeutics, Boston, MA
| | - Steven V Edelman
- Division of Endocrinology and Metabolism, School of Medicine, University of California, San Diego, San Diego, CA.,Taking Control of Your Diabetes, Del Mar, CA.,Veterans Affairs Medical Center, San Diego, CA
| | - William H Polonsky
- Department of Psychiatry, University of California, San Diego, San Diego, CA.,Behavioral Diabetes Institute, San Diego, CA
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277
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Mella R, Schmidt CB, Romagnoli PP, Teske JA, Perez-Leighton C. The Food Environment, Preference, and Experience Modulate the Effects of Exendin-4 on Food Intake and Reward. Obesity (Silver Spring) 2017; 25:1844-1851. [PMID: 29086500 DOI: 10.1002/oby.21939] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/25/2017] [Accepted: 06/26/2017] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The obesogenic food environment facilitates access to multiple palatable foods. Exendin-4 (EX4) is a glucagon-like peptide 1 receptor (GLP1R) agonist that inhibits food intake and has been proposed as an obesity therapy. This study tested whether the composition of the food environment and experience with palatable foods modulate the effects of EX4 on food intake and reward. METHODS Mice fed a cafeteria (CAF) or control diet were tested for the anorectic effects of EX4 when simultaneously offered foods of varying individual preference and in a conditioned place preference (CPP) test for chocolate. Plasma glucagon-like peptide 1 (GLP1) and hypothalamic GLP1R mRNA were analyzed post mortem. RESULTS Mice fed a CAF diet developed individual food preference patterns. Offering mice either novel or highly preferred foods decreased the potency of EX4 to inhibit food intake compared to low preference foods or chow. Compared to the control diet, CAF diet intake blocked the decrease in chocolate CPP caused by EX4 and decreased the expression of hypothalamic GLP1R mRNA without altering the plasma GLP1 concentration. CONCLUSIONS The composition of the food environment, food preference, and experience modulate the ability of EX4 to inhibit food intake and reward. These data highlight the significance of modeling the complexity of the human food environment in preclinical obesity studies.
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Affiliation(s)
- Ricardo Mella
- Center for Integrative Medicine and Innovative Science, Facultad de Medicina, Universidad Andres Bello, Santiago, Chile
| | - Camila B Schmidt
- Center for Integrative Medicine and Innovative Science, Facultad de Medicina, Universidad Andres Bello, Santiago, Chile
| | - Pierre-Paul Romagnoli
- Department of Mathematics, Facultad de Ciencias Exactas, Universidad Andres Bello, Santiago, Chile
| | - Jennifer A Teske
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, USA
- Minnesota Obesity Center, University of Minnesota, Saint Paul, Minnesota, USA
- Department of Food Science and Nutrition, University of Minnesota, Saint Paul, Minnesota, USA
- Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota, USA
| | - Claudio Perez-Leighton
- Center for Integrative Medicine and Innovative Science, Facultad de Medicina, Universidad Andres Bello, Santiago, Chile
- Department of Food Science and Nutrition, University of Minnesota, Saint Paul, Minnesota, USA
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278
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Marya, Khan H, Nabavi SM, Habtemariam S. Anti-diabetic potential of peptides: Future prospects as therapeutic agents. Life Sci 2017; 193:153-158. [PMID: 29055800 DOI: 10.1016/j.lfs.2017.10.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 12/12/2022]
Abstract
Diabetes mellitus is a metabolic disorder in which the glucose level in blood exceeds beyond the normal level. Persistent hyperglycemia leads to diabetes late complication and obviously account for a large number of morbidity and mortality worldwide. Numerous therapeutic options are available for the treatment of diabetes including insulin for type I and oral tablets for type II, but its effective management is still a dream. To date, several options are under investigation in various research laboratories for efficacious and safer agents. Of them, peptides are currently amongst the most widely investigated potential therapeutic agents whose design and optimal uses are under development. A number of natural and synthetic peptides have so far been found with outstanding antidiabetic effect mediated through diverse mechanisms. The applications of new emerging techniques and drug delivery systems further offer opportunities to achieve the desired target outcomes. Some outstanding peptides in preclinical and clinical studies with better efficacy and safety profile have already been identified. Further detail studies on these peptides may therefore lead to significant clinically useful antidiabetic agents.
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Affiliation(s)
- Marya
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan.
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories & Herbal Analysis Services, University of Greenwich, Central Avenue, Charham-Maritime, Kent ME4 4TB, UK
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279
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Davies M, Pieber TR, Hartoft-Nielsen ML, Hansen OKH, Jabbour S, Rosenstock J. Effect of Oral Semaglutide Compared With Placebo and Subcutaneous Semaglutide on Glycemic Control in Patients With Type 2 Diabetes: A Randomized Clinical Trial. JAMA 2017; 318:1460-1470. [PMID: 29049653 PMCID: PMC5817971 DOI: 10.1001/jama.2017.14752] [Citation(s) in RCA: 265] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
IMPORTANCE Glucagon-like peptide-1 (GLP-1) receptor agonists are effective therapies for the treatment of type 2 diabetes and are all currently available as an injection. OBJECTIVES To compare the effects of oral semaglutide with placebo (primary) and open-label subcutaneous semaglutide (secondary) on glycemic control in patients with type 2 diabetes. DESIGN, SETTING, AND PATIENTS Phase 2, randomized, parallel-group, dosage-finding, 26-week trial with 5-week follow-up at 100 sites (hospital clinics, general practices, and clinical research centers) in 14 countries conducted between December 2013 and December 2014. Of 1106 participants assessed, 632 with type 2 diabetes and insufficient glycemic control using diet and exercise alone or a stable dose of metformin were randomized. Randomization was stratified by metformin use. INTERVENTIONS Once-daily oral semaglutide of 2.5 mg (n = 70), 5 mg (n = 70), 10 mg (n = 70), 20 mg (n = 70), 40-mg 4-week dose escalation (standard escalation; n = 71), 40-mg 8-week dose escalation (slow escalation; n = 70), 40-mg 2-week dose escalation (fast escalation, n = 70), oral placebo (n = 71; double-blind) or once-weekly subcutaneous semaglutide of 1.0 mg (n = 70) for 26 weeks. MAIN OUTCOMES AND MEASURES The primary end point was change in hemoglobin A1c (HbA1c) from baseline to week 26. Secondary end points included change from baseline in body weight and adverse events. RESULTS Baseline characteristics were comparable across treatment groups. Of the 632 randomized patients (mean age, 57.1 years [SD, 10.6]; men, 395 (62.7%); diabetes duration, 6.3 years [SD, 5.2]; body weight, 92.3 kg [SD, 16.8]; BMI, 31.7 [SD, 4.3]), 583 (92%) completed the trial. Mean change in HbA1c level from baseline to week 26 decreased with oral semaglutide (dosage-dependent range, -0.7% to -1.9%) and subcutaneous semaglutide (-1.9%) and placebo (-0.3%); oral semaglutide reductions were significant vs placebo (dosage-dependent estimated treatment difference [ETD] range for oral semaglutide vs placebo, -0.4% to -1.6%; P = .01 for 2.5 mg, <.001 for all other dosages). Reductions in body weight were greater with oral semaglutide (dosage-dependent range, -2.1 kg to -6.9 kg) and subcutaneous semaglutide (-6.4 kg) vs placebo (-1.2 kg), and significant for oral semaglutide dosages of 10 mg or more vs placebo (dosage-dependent ETD range, -0.9 to -5.7 kg; P < .001). Adverse events were reported by 63% to 86% (371 of 490 patients) in the oral semaglutide groups, 81% (56 of 69 patients) in the subcutaneous semaglutide group, and 68% (48 of 71 patients) in the placebo group; mild to moderate gastrointestinal events were most common. CONCLUSIONS AND RELEVANCE Among patients with type 2 diabetes, oral semaglutide resulted in better glycemic control than placebo over 26 weeks. These findings support phase 3 studies to assess longer-term and clinical outcomes, as well as safety. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT01923181.
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Affiliation(s)
- Melanie Davies
- Diabetes Research Centre, University of Leicester, Leicester, United Kingdom
| | | | | | | | - Serge Jabbour
- Thomas Jefferson University, Philadelphia, Pennsylvania
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280
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Lu Z, Yeung CK, Lin G, Yew DTW, Andrews PLR, Rudd JA. Centrally located GLP-1 receptors modulate gastric slow waves and cardiovascular function in ferrets consistent with the induction of nausea. Neuropeptides 2017; 65:28-36. [PMID: 28456436 DOI: 10.1016/j.npep.2017.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/09/2017] [Accepted: 04/13/2017] [Indexed: 11/17/2022]
Abstract
Glucagon-like peptide-1 (GLP-1) receptor agonists are indicated for the treatment of Type 2 diabetes and obesity, but can cause nausea and emesis in some patients. GLP-1 receptors are distributed widely in the brain, where they contribute to mechanisms of emesis, reduced appetite and aversion, but it is not known if these centrally located receptors also contribute to a modulation of gastric slow wave activity, which is linked causally to nausea. Our aim was to investigate the potential of the GLP-1 receptor agonist, exendin-4, administered into the 3rd ventricle to modulate emesis, feeding and gastric slow wave activity. Thermoregulation and cardiovascular parameters were also monitored, as they are disturbed during nausea. Ferrets were used as common laboratory rodents do not have an emetic reflex. A guide cannula was implanted into the 3rd ventricle for delivering a previously established dose of exendin-4 (10nmol), which had been shown to induce emesis and behaviours indicative of 'nausea'. Radiotelemetry recorded gastric myoelectric activity (GMA; slow waves), blood pressure and heart rate variability (HRV), and core temperature; food intake and behaviour were also assessed. Exendin-4 (10nmol, i.c.v.) decreased the dominant frequency of GMA, with an associated increase in the percentage of bradygastric power (lasting ~4h). Food intake was inhibited in all animals, with 63% exhibiting emesis. Exendin-4 also increased blood pressure (lasting ~24h) and heart rate (lasting ~7h), decreased HRV (lasting ~24h), and caused transient hyperthermia. None of the above parameters were emesis-dependent. The present study shows for the first time that gastric slow waves may be modulated by GLP-1 receptors in the brain through mechanisms that appear independent from emesis. Taken together with a reduction in HRV, the findings are consistent with changes associated with the occurrence of nausea in humans.
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Affiliation(s)
- Zengbing Lu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Chi-Kong Yeung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - David T W Yew
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - P L R Andrews
- Division of Biomedical Sciences, St George's University of London, London, UK
| | - John A Rudd
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.; Brain and Mind Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China..
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281
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Kleinert M, Clemmensen C, Stemmer K, Müller TD, DiMarchi RD, Tschöp MH. Emerging Poly-Agonists for Obesity and Type 2 Diabetes. Obesity (Silver Spring) 2017; 25:1647-1649. [PMID: 28948717 DOI: 10.1002/oby.21932] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/21/2017] [Accepted: 06/21/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Maximilian Kleinert
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Munich, Germany
- Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
- Molecular Physiology Group, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Christoffer Clemmensen
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Munich, Germany
- Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
| | - Kerstin Stemmer
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Munich, Germany
- Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
| | - Timo D Müller
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Munich, Germany
- Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
| | | | - Matthias H Tschöp
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Munich, Germany
- Division of Metabolic Diseases, Department of Medicine, Technische Universität München, Munich, Germany
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282
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Montandon SA, Jornayvaz FR. Effects of Antidiabetic Drugs on Gut Microbiota Composition. Genes (Basel) 2017; 8:genes8100250. [PMID: 28973971 PMCID: PMC5664100 DOI: 10.3390/genes8100250] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 02/06/2023] Open
Abstract
Gut microbiota forms a catalog of about 1000 bacterial species; which mainly belong to the Firmicutes and Bacteroidetes phyla. Microbial genes are essential for key metabolic processes; such as the biosynthesis of short-chain fatty acids (SCFA); amino acids; bile acids or vitamins. It is becoming clear that gut microbiota is playing a prevalent role in pathologies such as metabolic syndrome; type 2 diabetes (T2D); inflammatory and bowel diseases. Obesity and related diseases; notably type 2 diabetes, induce gut dysbiosis. In this review; we aim to cover the current knowledge about the effects of antidiabetic drugs on gut microbiota diversity and composition as well as the potential beneficial effects mediated by specific taxa. Metformin is the first-line treatment against T2D. In addition to its glucose-lowering and insulin sensitizing effects, metformin promotes SCFA-producing and mucin-degrading bacteria. Other antidiabetic drugs discussed in this review show positive effects on dysbiosis; but without any consensus specifically regarding the Firmicutes to Bacteroidetes ratio. Thus, beneficial effects might be mediated by specific taxa.
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Affiliation(s)
- Sophie A Montandon
- Service of Endocrinology, Diabetes, Hypertension and Nutrition, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland.
| | - François R Jornayvaz
- Service of Endocrinology, Diabetes, Hypertension and Nutrition, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland.
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283
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Abstract
PURPOSE OF REVIEW The worldwide prevalence of obesity is increasing. Obesity is strongly associated with many chronic health conditions that have been shown to improve with weight loss. However, counseling patients on weight loss can be challenging. Identifying specific aspects of weight management may personalize the conversation about weight loss and better address the individual patient's health goals and perceived barriers to change. RECENT FINDINGS Physical and behavioral phenotypes are being identified to better tailor treatment recommendations, given lack of efficacy of currently available interventions. The current review provides a summary of the evidence behind the management of several recognized clinical phenotypes, to include body fat distribution (e.g., central obesity), muscle mass (e.g., sarcopenic obesity of the elderly), and problematic eating behaviors (e.g., cravings). Identifying specific aspects of weight management may personalize the conversation about weight loss and better address the individual patient's health goals and perceived barriers to change.
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Affiliation(s)
- Meera Shah
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA
| | - Ryan T Hurt
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA
- Division of General Internal Medicine, Mayo Clinic, Rochester, MN, USA
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
- Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, Louisville, KY, USA
| | - Manpreet S Mundi
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.
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284
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Past, present and future of pharmacotherapy for obesity. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2017; 29:256-264. [PMID: 28935287 DOI: 10.1016/j.arteri.2017.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 06/27/2017] [Indexed: 01/04/2023]
Abstract
Conventional treatment for obesity with diet, exercise and bariatric surgery has limitations; thus, it is necessary to have pharmacological tools. In the past, different drugs were marketed that were withdrawn due to safety problems. There are currently 3 drugs approved by the European Medicines Agency (EMA) and the Food and Drug Administration (FDA) for obesity therapy (orlistat, combination of bupropion and delayed-release naltrexone and liraglutide) and two more only authorized by FDA (lorcaserin and the combination of phentermine and extended release topiramate). It is recommended to use as a second therapeutic line and its choice should be individualized taking into account multiple aspects such as expected weight loss, route of administration, safety profile and cost. Currently there are several drugs under development that act on different therapeutic targets.
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285
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Hieng YC. An Internal Audit of Diabetes Care for Type 2 Diabetic Patients in a Public Hospital Diabetes Clinic in Malaysia. Malays J Med Sci 2017; 24:55-60. [PMID: 28894404 DOI: 10.21315/mjms2017.24.2.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 01/16/2017] [Indexed: 10/19/2022] Open
Abstract
INTRODUCTION Earlier studies have identified a gap between guidelines and actual clinical diabetes care in Malaysia. OBJECTIVE We audited the quality of care for patients with type 2 diabetes mellitus (T2DM) attending our diabetes clinic at a public hospital. METHODS A structured review of the outpatient clinic cards, prescriptions and laboratory results was conducted for patients attending the diabetes clinic at Sibu Hospital in October and November 2014. RESULTS For the total of 233 patients who were audited, the levels of fasting blood sugar, blood pressure, body mass index and fasting lipid profile were satisfactory at 99.1%, 99.6%, 92.6% and 99.6% respectively. 79.7% of the subjects had had HbA1c performed at least once over the previous six months. Only 25.8% had annual foot screening, while the eye screening rate was 71.2% and the albuminuria screening rate was 93.6%. For outcome measures, the mean (SD) HbA1c level was 9.2% (1.91%), with 13 patients (6.7%) having HbA1c less than 6.5%; 36.4% of participants achieved BP < 130/80 mmHg; and 69.4% had LDL < 2.6 mmol/L. The majority of the patients were overweight or obese (91.4%). CONCLUSIONS Overall, the performance of diabetic care processes at our hospital was satisfactory, except for foot examination. The glycaemic and weight control among the subjects were suboptimal and warrant an optimised and comprehensive approach on the part of the management.
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Affiliation(s)
- Yung Chun Hieng
- Department of Medicine, Sibu Hospital, Batu 5 ½, Jalan Oya Lama, Sibu, Sarawak, Malaysia
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286
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Carls GS, Tan R, Zhu JY, Tuttle E, Yee J, Edelman SV, Polonsky WH. Real-world weight change among patients treated with glucagon-like peptide-1 receptor agonist, dipeptidyl peptidase-4 inhibitor and sulfonylureas for type 2 diabetes and the influence of medication adherence. Obes Sci Pract 2017; 3:342-351. [PMID: 29071110 PMCID: PMC5598021 DOI: 10.1002/osp4.116] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/12/2017] [Accepted: 05/19/2017] [Indexed: 02/05/2023] Open
Abstract
AIMS The study aims to examine real-world weight change and the role of medication adherence among patients with type 2 diabetes who initiated one of three drug classes: glucagon-like peptide-1 receptor agonist (GLP-1RA), dipeptidyl peptidase-4 inhibitor (DPP4) and sulfonylureas (SUs). MATERIALS AND METHODS A cohort of patients initiating one of the three drug classes was selected from a large US database of integrated electronic medical record and administrative claims. Adherence was defined as per cent of days covered ≥80% during the year following drug initiation. Weight change was calculated from drug initiation (-180, +30 d) to 1 year (±90 d) later. Multivariate regression controlled for baseline differences between adherent and poorly adherent patients and the addition of another drug class during follow-up. RESULTS The study included 833 GLP-1RA, 2,272 DPP4 and 2,713 SU patients who contributed 2,279, 6,602 and 7,429 observations respectively. Patients initiating a GLP-1RA achieved the largest weight change (-2.46 kg of GLP-1RA, -1.26 kg of DPP4 and 0.18 kg of SU, P < 0.01). Adherent GLP-1 patients lost 1.73 kg more than poorly adherent patients, and adherent SU patients gained 1.11 kg more than poorly adherent patients (all P < 0.01). Adherent and poorly adherent DPP4 patients experienced approximately the same amount of weight loss. CONCLUSIONS Medication adherence can mediate observed weight loss in patients treated with a GLP1-RA or weight gain in those treated with an SU. Medication adherence was low in a real-world population, particularly for GLP-1RA, which displayed the strongest weight loss benefit. Because recent American Diabetes Association guidelines recommend selecting drug therapies that have a weight loss or weight neutral effect for the management of type 2 diabetes patients, patients should be encouraged to enhance their adherence to benefit the most from therapies that have weight loss properties.
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Affiliation(s)
| | - R. Tan
- Analysis Group, Inc.Menlo ParkCAUSA
| | | | | | - J. Yee
- Intarcia TherapeuticsBostonMAUSA
| | - S. V. Edelman
- University of CaliforniaOaklandCAUSA
- Taking Control of Your DiabetesDel MarCAUSA
| | - W. H. Polonsky
- University of CaliforniaSan DiegoCAUSA
- Behavioral Diabetes InstituteSan DiegoCAUSA
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287
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Kautzky-Willer A, Harreiter J. Sex and gender differences in therapy of type 2 diabetes. Diabetes Res Clin Pract 2017; 131:230-241. [PMID: 28779681 DOI: 10.1016/j.diabres.2017.07.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/09/2017] [Accepted: 07/07/2017] [Indexed: 12/11/2022]
Abstract
Clinical guidelines for the management of type 2 diabetes recommend individual therapy considering age, duration of disease, presence of complication and risk of hypoglycaemia. However, at present, the patient's sex has no impact on clinical decisions. Yet, there is mounting data pointing at biological and psychosocial differences between men and women with great impact on progression of disease and complications. Moreover, choices and preferences of therapeutic strategies as well as adherence to lifestyle and pharmacological interventions differ in both sexes. In addition, drug therapy may have sex-specific side effects. Therefore, there is need of more research on biological differences and of evidence-based individualised targeted sex-sensitive therapeutic concepts. Clinical guidelines must consider relevant sex-differences. Development and implementation of sex-specific programs may help to improve adherence to therapy and to reduce progression of disease and development of complications. A more gender-sensitive clinical approach may improve quality of life and increase health and life expectancy in men and women with type 2 diabetes.
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Affiliation(s)
- Alexandra Kautzky-Willer
- Gender Medicine Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria; Gender Medicine Institute, Gars am Kamp, Austria.
| | - Jürgen Harreiter
- Gender Medicine Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
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288
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de Boer IH, Bangalore S, Benetos A, Davis AM, Michos ED, Muntner P, Rossing P, Zoungas S, Bakris G. Diabetes and Hypertension: A Position Statement by the American Diabetes Association. Diabetes Care 2017; 40:1273-1284. [PMID: 28830958 DOI: 10.2337/dci17-0026] [Citation(s) in RCA: 370] [Impact Index Per Article: 52.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | | | | | | | - Erin D Michos
- The Johns Hopkins University School of Medicine, Baltimore, MD
| | - Paul Muntner
- School of Public Health, University of Alabama at Birmingham, Birmingham, AL
| | - Peter Rossing
- Steno Diabetes Center Copenhagen, University of Copenhagen, Copenhagen, Denmark
| | - Sophia Zoungas
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
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Levin P, Fan T, Song X, Nero D, Davis B, Chu BC. COMPARING CLINICAL OUTCOMES AND COSTS FOR DIFFERENT TREATMENT INTENSIFICATION APPROACHES IN PATIENTS WITH TYPE 2 DIABETES UNCONTROLLED ON BASAL INSULIN: ADDING GLUCAGON-LIKE PEPTIDE 1 RECEPTOR AGONISTS VERSUS ADDING RAPID-ACTING INSULIN OR INCREASING BASAL INSULIN DOSE. Endocr Pract 2017; 23:1316-1324. [PMID: 28816532 DOI: 10.4158/ep171769.or] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Not all patients with type 2 diabetes achieve recommended glycated hemoglobin A1c (A1C) levels after adequate titration of basal insulin (BI). Current intensification approaches include addition of rapid-acting insulin (RAI) or a glucagon-like peptide 1 receptor agonist (GLP-1 RA), but it is not clear which strategy results in better long-term outcomes. METHODS This retrospective analysis of health insurance claims data in the U.S. MarketScan database compared glycemic control and healthcare resource utilization and costs 12 months after adding a GLP-1 RA to BI versus adding a RAI or increasing BI doses. Propensity score matching was used in the comparative effectiveness analysis. RESULTS A total of 8,034 patients underwent treatment intensification within 6 months of showing poor glycemic control; 4,134 patients had their BI dose adjusted, and 2,076 and 331 received RAI and GLP-1 RA, respectively. A1C changes were similar for the GLP-1 RA and RAI cohorts but higher for the GLP-1 RA versus the dose-adjustment group. The hypoglycemia rate was lower after adding GLP-1 RA versus RAI or increasing BI dose. No overall changes in utilization of healthcare resources or diabetes-related costs were observed between intensification strategies, although prescription costs were higher for the GLP-1 RA cohort. CONCLUSION BI in combination with GLP-1 RAs appears to be an effective intensification strategy, further reducing A1C levels and hypoglycemia frequency compared to increasing BI doses. GLP-1 RA addition also decreases hypoglycemia frequency versus BI dose increases and RAI addition, without raising overall healthcare costs. ABBREVIATIONS A1C = hemoglobin A1c; BI = basal insulin; CAD = coronary artery disease; ED = emergency department; FPG = fasting plasma glucose; GLP-1 RA = glucagon-like peptide 1 receptor agonist; ICD-9-CM = International Classification of Diseases, Ninth Revision, Clinical Modification; NPH = neutral protamine Hagedorn; OAD = oral antidiabetes drug; PSM = propensity score matching; RAI = rapid-acting insulin; T2D = type 2 diabetes.
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Abstract
PURPOSE OF REVIEW This review provides a rationale for the use of pharmacotherapy in pediatric weight management, summarizes results of some of the key pediatric clinical trials of approved and "off-label" obesity medications, introduces new options in the pediatric pipeline, and offers a glimpse into the future of pediatric obesity medicine. RECENT FINDINGS Despite the need for adjunctive treatments to enhance the outcomes of lifestyle modification therapy among youth with obesity, none of the obesity medications evaluated to date have been shown to meaningfully reduce BMI or cardiometabolic risk factors. Promising medications recently approved for the treatment of obesity in adults will soon be tested in pediatric trials, offering hope that new therapeutic options will soon be available. As new medications are approved to treat pediatric obesity, it will be important to evaluate the safety and efficacy of combination pharmacotherapy and investigate predictors of response. Application of precision medicine approaches to the field of pediatric obesity management will improve the long-term outlook for the tens of millions of youth afflicted with this serious and recalcitrant disease.
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Affiliation(s)
- Aaron S Kelly
- Department of Pediatrics, University of Minnesota Masonic Children's Hospital, University of Minnesota Medical School, 420 Delaware St. S.E., MMC 715, Minneapolis, MN, 55455, USA.
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, USA.
| | - Claudia K Fox
- Department of Pediatrics, University of Minnesota Masonic Children's Hospital, University of Minnesota Medical School, 420 Delaware St. S.E., MMC 715, Minneapolis, MN, 55455, USA
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291
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Genovese S, Mannucci E, Ceriello A. A Review of the Long-Term Efficacy, Tolerability, and Safety of Exenatide Once Weekly for Type 2 Diabetes. Adv Ther 2017; 34:1791-1814. [PMID: 28674957 PMCID: PMC5565650 DOI: 10.1007/s12325-017-0499-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Indexed: 12/17/2022]
Abstract
Introduction Exenatide once weekly (ExeOW, Bydureon®, Astra Zeneca), a drug belonging to the class of glucagon-like peptide-1 (GLP-1) receptor agonists, is the first agent approved for treatment of type 2 diabetes (T2D) that can be administered on a weekly basis. Methods Data concerning treatment of T2D with ExeOW are reviewed with special reference to its long-term efficacy, tolerability, and safety. Relevant literature was identified through the PubMed database from inception to January 2015. Results In randomized clinical trials ExeOW, as add-on to oral antidiabetics, achieved significantly improved glycemic control compared to maximum recommended doses of exenatide twice daily, sitagliptin, pioglitazone, and insulin glargine, as measured by HbA1c. In drug-naïve patients ExeOW was superior to sitagliptin and non-inferior to metformin, whereas non-inferiority to pioglitazone and liraglutide was not proven. In different trials reductions in HbA1c ranged from −1.1% to −2.0%. ExeOW therapy over 6 months was also associated with a mean weight loss of −2 to −4 kg, improved systolic blood pressure and lipid profile, and no hypoglycemia unless associated to sulfonylurea. ExeOW long-term therapy up to 3–6 years allowed persistent glycemic control (HbA1c −1.6%), sustained decreases in blood pressure (−2 mmHg), and improvements of lipid profile. ExeOW tolerability was comparable to that of the other GLP-1 receptor agonists, with better gastrointestinal tolerability when direct comparison was done (namely liraglutide and exenatide BID), but higher incidence of injection site reactions and few treatment discontinuations mainly due to gastrointestinal events. Conclusion ExeOW is a well-tolerated and convenient option for long-term treatment of T2D allowing significant and persistent glycemic control with moderate weight loss and low risk of hypoglycemia unless associated with sulfonylureas.
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292
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Srikanth S, Deedwania P. Management of Dyslipidemia in Patients with Hypertension, Diabetes, and Metabolic Syndrome. Curr Hypertens Rep 2017; 18:76. [PMID: 27730495 DOI: 10.1007/s11906-016-0683-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW The purpose of this review is to discuss dyslipidemia in the various common clinical conditions including hypertension, diabetes mellitus, and metabolic syndrome and review the current therapeutic strategy in these settings. RECENT FINDINGS Dyslipidemias are common in patients with hypertension, diabetes mellitus, and metabolic syndrome. Epidemiologic studies have shown a strong correlation between serum lipid levels and risk of atherosclerotic cardiovascular disease. Multifactorial intervention strategies aimed at controlling lipids, blood pressure, and blood glucose simultaneously achieve maximal reductions in cardiovascular risk. Dyslipidemia and metabolic abnormalities are strongly associated with atherosclerosis and worse cardiovascular outcomes. While pharmacotherapy with statins has been proven to be beneficial for dyslipidemia, lifestyle modification emphasizing weight loss and regular exercise is an essential component of the interventional strategy. The common thread underlying atherosclerosis and metabolic abnormalities is endothelial dysfunction. Improved understanding of the role of endothelium in health and disease can potentially lead to novel therapies that may preempt development of atherosclerosis and its complications.
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Affiliation(s)
- Sundararajan Srikanth
- UCSF School of Medicine, Fresno, CA, USA
- Division of Cardiovascular Diseases, UCSF Program at Fresno CA, Fresno, CA, USA
| | - Prakash Deedwania
- UCSF School of Medicine, San Francisco Suite 460, 2335 E Kashian Lane, Fresno, CA, 93701, USA.
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Steinberg WM, Buse JB, Ghorbani MLM, Ørsted DD, Nauck MA. Amylase, Lipase, and Acute Pancreatitis in People With Type 2 Diabetes Treated With Liraglutide: Results From the LEADER Randomized Trial. Diabetes Care 2017; 40:966-972. [PMID: 28476871 DOI: 10.2337/dc16-2747] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/03/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To evaluate serum amylase and lipase levels and the rate of acute pancreatitis in patients with type 2 diabetes and high cardiovascular risk randomized to liraglutide or placebo and observed for 3.5-5.0 years. RESEARCH DESIGN AND METHODS A total of 9,340 patients with type 2 diabetes were randomized to either liraglutide or placebo (median observation time 3.84 years). Fasting serum lipase and amylase were monitored. Acute pancreatitis was adjudicated in a blinded manner. RESULTS Compared with the placebo group, liraglutide-treated patients had increases in serum lipase and amylase of 28.0% and 7.0%, respectively. Levels were increased at 6 months and then remained stable. During the study, 18 (0.4% [1.1 events/1,000 patient-years of observation] [PYO]) liraglutide-treated and 23 (0.5% [1.7 events/1,000 PYO]) placebo patients had acute pancreatitis confirmed by adjudication. Most acute pancreatitis cases occurred ≥12 months after randomization. Liraglutide-treated patients with prior history of pancreatitis (n = 147) were not more likely to develop acute pancreatitis than similar patients in the placebo group (n = 120). Elevations of amylase and lipase levels did not predict future risk of acute pancreatitis (positive predictive value <1.0%) in patients treated with liraglutide. CONCLUSIONS In a population with type 2 diabetes at high cardiovascular risk, there were numerically fewer events of acute pancreatitis among liraglutide-treated patients (regardless of previous history of pancreatitis) compared with the placebo group. Liraglutide was associated with increases in serum lipase and amylase, which were not predictive of an event of subsequent acute pancreatitis.
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Affiliation(s)
| | - John B Buse
- University of North Carolina School of Medicine, Chapel Hill, NC
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Wang W, Gao Y, Chen D, Wang C, Feng X, Ran X. Efficacy and safety of incretin-based drugs in patients with type 1 diabetes mellitus: A systematic review and meta-analysis. Diabetes Res Clin Pract 2017; 129:213-223. [PMID: 28552612 DOI: 10.1016/j.diabres.2017.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 05/08/2017] [Indexed: 02/05/2023]
Abstract
AIMS In patients with type 2 diabetes, incretin-based therapies can improve glucose control without increased weight gain or hypoglycemia. Incretin-based drugs added to insulin therapy in type 1 diabetes (T1DM) have also been tried in many studies. However, the results were controversial. We thus performed a meta-analysis to assess the efficacy and safety of incretin-based therapies in patients with T1DM. METHODS We systematically searched Medline, EMBASE, and Cochrane Central Register of Controlled Trials for relevant studies published before August 25, 2016. Data was extracted by two independent reviewers. The main outcomes included glycosylated hemoglobin (HbA1c), insulin dose, weight, hypoglycemia, ketosis and ketoacidosis. All pooled data were assessed using random-effects model. RESULTS Twelve randomized controlled trials with a total of 2903 individuals were finally included into the meta-analysis. Incretin-based drugs could significantly reduce HbA1c (MD -0.20, 95% CI -0.30 to -0.10), weight (MD -2.83, 95% CI -4.00 to -1.65) and insulin dose (MD -4.55, 95% CI -6.15 to -2.94). Furthermore, incretin-based drugs did not increase relative risk of severe hypoglycemia (RR 0.79, 95% CI 0.58 to 1.06), ketosis (RR 1.37, 95% CI 0.95 to 1.97) and ketoacidosis (RR 2.62, 95% CI 0.31 to 21.99). CONCLUSIONS Incretin-based treatment in patients with T1DM may improve glycemic control and reduce insulin dose and weight without increasing the risk of serious adverse event, such as severe hypoglycemia, ketosis or ketoacidosis. The current evidence for the aforementioned adverse effects, however, is weak. A rigorous monitoring of these adverse events should be implemented in well-designed observational studies.
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Affiliation(s)
- Wen Wang
- Chinese Evidence-based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Yun Gao
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Dawei Chen
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Chun Wang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Xiaobing Feng
- West China Medical School of Sichuan University, Chengdu 610041, People's Republic of China
| | - Xingwu Ran
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China.
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295
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Anholm C, Kumarathurai P, Pedersen LR, Nielsen OW, Kristiansen OP, Fenger M, Madsbad S, Sajadieh A, Haugaard SB. Liraglutide effects on beta-cell, insulin sensitivity and glucose effectiveness in patients with stable coronary artery disease and newly diagnosed type 2 diabetes. Diabetes Obes Metab 2017; 19:850-857. [PMID: 28124822 DOI: 10.1111/dom.12891] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/21/2017] [Accepted: 01/21/2017] [Indexed: 12/31/2022]
Abstract
AIMS The aims of the study were to investigate the effects of the GLP-1 receptor agonist liraglutide as add-on to metformin on insulin sensitivity (Si) and glucose effectiveness (Sg) in addition to its positive effects on beta-cell function in overweight/obese patients with coronary artery disease (CAD) and type 2 diabetes mellitus (T2DM). METHODS The design of the study was a randomized, double-blind, placebo-controlled, cross-over trial in patients with stable CAD and newly diagnosed well-controlled T2DM. Patients were treated with liraglutide/metformin vs placebo/metformin for a 12 + 12-week period with ≥2-week wash-out. First phase insulin secretion (AIRg), Si and Sg were estimated by the Bergman Minimal Model, enabling calculation of beta-cell function; Disposition Index (DI) = AIRg × Si. A total of 30 patients from among 41 randomized were available for paired analysis. RESULTS Baseline characteristics were: HbA1c 47 mmol/mol (SD 6), BMI 31.6 kg/m2 (SD 4.8), fasting plasma-glucose 6.9 mmol/L (IQR 6.1; 7.4) and HOMA-IR 4.9 (IQR 3.0; 7.5). Liraglutide treatment improved AIRg by 3-fold, 497 mU × L-1 × min (IQR 342; 626, P < .0001) and DI by 1-fold, 766 (SD 824, P < .0001). Despite a significant weight loss of -2.7 kg (-6.7; -0.6) during liraglutide treatment, we found no improvement in HOMA-IR, Si or Sg. Weight loss during liraglutide therapy did not result in a carry-over effect. CONCLUSION Liraglutide as add-on to metformin induces a clinically significant improvement in beta-cell function in overweight/obese, high cardiovascular risk patients with newly diagnosed well-controlled T2DM and CAD. The effect of liraglutide on DI is mediated entirely by improved AIRg whereas the effects on Si and Sg are neutral.
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Affiliation(s)
- Christian Anholm
- Department of Internal Medicine, Copenhagen University Hospital, Amager, Denmark
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Preman Kumarathurai
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Lene R Pedersen
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Olav W Nielsen
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Ole P Kristiansen
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Mogens Fenger
- Department of Clinical Biochemistry, Copenhagen University Hospital, Hvidovre, Denmark
| | - Sten Madsbad
- Department of Endocrinology, Copenhagen University Hospital, Hvidovre, Denmark
| | - Ahmad Sajadieh
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Denmark
| | - Steen B Haugaard
- Department of Internal Medicine, Copenhagen University Hospital, Amager, Denmark
- Clinical Research Centre, Copenhagen University Hospital, Hvidovre, Denmark
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296
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Dong Y, Lv Q, Li S, Wu Y, Li L, Li J, Zhang F, Sun X, Tong N. Efficacy and safety of glucagon-like peptide-1 receptor agonists in non-alcoholic fatty liver disease: A systematic review and meta-analysis. Clin Res Hepatol Gastroenterol 2017; 41:284-295. [PMID: 28065744 DOI: 10.1016/j.clinre.2016.11.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 11/09/2016] [Accepted: 11/22/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND OBJECTIVE New drugs are urgently needed for the treatment of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). The aim of this meta-analysis was to evaluate the efficacy and safety of glucagon-like peptide-1 receptor agonists (GLP-1RAs) in NAFLD/NASH. METHODS We searched the MEDLINE, Embase, and Cochrane Library Central to identify randomized controlled trials (RCTs) and observational studies that compared GLP-1RAs with a control treatment or baseline values with respect to efficacy and safety in patients with NAFLD/NASH. Mean differences (MDs) with 95% confidence intervals (CIs) and odds ratios (ORs) were pooled using a random-effect model. RESULTS Six studies were eligible and included. Among the 329 NAFLD/NASH patients included in these studies, 277 patients had type 2 diabetes (T2D). GLP-1RA treatment produced significant reductions relative to baseline in liver histology scores for steatosis (MD, 0.80; 95% CI, 0.49 to 1.11), lobular inflammation (MD, 0.22; 95% CI, 0.00 to 0.45), hepatocellular ballooning (MD, 0.41; 95% CI, 0.15 to 0.67) and fibrosis (MD, 0.35; 95% CI, 0.00 to 0.70). Compared with placebo and positive agents, GLP-1RAs significantly reduced gamma-glutamyl transpeptidase (GGT) levels (MD, 13.8 U/L; 95% CI, 7.4 to 20.3; P<0.001). The reported major adverse events associated with GLP-1RA treatment included mild to moderate gastrointestinal discomfort that resolved within a few weeks. CONCLUSIONS Our study suggests that in NASH patients, particularly patients with diabetes, GLP-1RAs may improve liver histology and reduce aminotransferase levels from baseline. Benefits of GLP-1RAs are considered to outweigh the risks in NAFLD/NASH patients with or without diabetes.
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Affiliation(s)
- Yajie Dong
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Qingguo Lv
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Sheyu Li
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Yuan Wu
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Ling Li
- Chinese Evidence-Based Medicine Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Juan Li
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Fang Zhang
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Xin Sun
- Chinese Evidence-Based Medicine Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Nanwei Tong
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, No. 37 Guoxue Road, Chengdu, Sichuan 610041, China.
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297
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Sarafidis PA, Alexandrou ME, Ruilope LM. A review of chemical therapies for treating diabetic hypertension. Expert Opin Pharmacother 2017; 18:909-923. [DOI: 10.1080/14656566.2017.1328054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pantelis A. Sarafidis
- Department of Nephrology, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece
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298
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Geloneze B, de Lima-Júnior JC, Velloso LA. Glucagon-Like Peptide-1 Receptor Agonists (GLP-1RAs) in the Brain-Adipocyte Axis. Drugs 2017; 77:493-503. [PMID: 28233273 PMCID: PMC5357258 DOI: 10.1007/s40265-017-0706-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The complexity of neural circuits that control food intake and energy balance in the hypothalamic nuclei explains some of the constraints involved in the prevention and treatment of obesity. Two major neuronal populations present in the arcuate nucleus control caloric intake and energy expenditure: one population co-expresses orexigenic agouti-related peptide (AgRP) and neuropeptide Y and the other expresses the anorexigenic anorectic neuropeptides proopiomelanocortin and cocaine- and amphetamine-regulated transcript (POMC/CART). In addition to integrating signals from neurotransmitters and hormones, the hypothalamic systems that regulate energy homeostasis are affected by nutrients. Fat-rich diets, for instance, elicit hypothalamic inflammation (reactive activation and proliferation of microglia, a condition named gliosis). This process generates resistance to the anorexigenic hormones leptin and insulin, contributing to the genesis of obesity. Glucagon-like peptide-1 (GLP-1) receptor agonists (GLP-1RAs) have increasingly been used to treat type 2 diabetes mellitus. One compound (liraglutide) was recently approved for the treatment of obesity. Although most studies suggest that GLP-1RAs promote weight loss mainly due to their inhibitory effect on food intake, other central effects that have been described for native GLP-1 and some GLP-1RAs in rodents and humans encourage future clinical trials to explore additional mechanisms that potentially underlie the beneficial effects observed with this drug class. In this article we review the most relevant data exploring the mechanisms involved in the effects of GLP-1RAs in the brain–adipocyte axis.
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Affiliation(s)
- Bruno Geloneze
- Laboratory of Investigation in Metabolism and Diabetes-LIMED, University of Campinas, UNICAMP, Campinas, 13084-970, Brazil.
| | - José Carlos de Lima-Júnior
- Laboratory of Investigation in Metabolism and Diabetes-LIMED, University of Campinas, UNICAMP, Campinas, 13084-970, Brazil.,Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas-UNICAMP, Campinas, Brazil
| | - Lício A Velloso
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas-UNICAMP, Campinas, Brazil
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Nylander M, Frøssing S, Clausen HV, Kistorp C, Faber J, Skouby SO. Effects of liraglutide on ovarian dysfunction in polycystic ovary syndrome: a randomized clinical trial. Reprod Biomed Online 2017; 35:121-127. [PMID: 28479118 DOI: 10.1016/j.rbmo.2017.03.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/20/2017] [Accepted: 03/28/2017] [Indexed: 11/28/2022]
Abstract
Polycystic ovary syndrome (PCOS) encompasses an ovarian and a metabolic dysfunction. Glucagon-like peptide-1 (GLP-1) analogues facilitate weight loss and ameliorate metabolic dysfunction in overweight women with PCOS, but their effect on ovarian dysfunction is scarcely reported. In a double-blind, randomized trial, 72 women with PCOS were allocated to intervention with the GLP-1 analogue liraglutide or placebo (1.8 mg/day), in a 2:1 ratio. At baseline and 26-week follow-up, bleeding pattern, levels of AMH, sex hormones and gonadotrophins were assessed and ovarian morphology evaluated. Liraglutide caused 5.2 kg (95% CI 3.0 to 7.5, P < 0.0001) weight loss compared with placebo. Bleeding ratio improved with liraglutide: 0.28 (95% CI 0.20 to 0.36, P < 0.001); placebo: 0.14 (95% CI 0.02 to 0.26, P < 0.05); between-group difference: 0.14 (95% CI 0.03 to 0.24, P < 0.05). In the liraglutide group, SHBG increased by 7.4 nmol/L (95% CI 4.1 to 10.7) and free testosterone decreased by 0.005 nmol/L (95% CI -0.009 to -0.001). Ovarian volume decreased by -1.6 ml (95% CI -3.3 to 0.1) with liraglutide versus placebo. Nausea and constipation were more prevalent in the liraglutide group. Liraglutide improved markers of ovarian function in overweight women with PCOS, and might be a possible intervention.
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Affiliation(s)
- Malin Nylander
- Department of Obstetrics and Gynecology, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark.
| | - Signe Frøssing
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark; Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark
| | - Helle V Clausen
- Department of Obstetrics and Gynecology, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark
| | - Caroline Kistorp
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark; Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark
| | - Jens Faber
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark; Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark
| | - Sven O Skouby
- Department of Obstetrics and Gynecology, Herlev Gentofte Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark
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300
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Htike ZZ, Zaccardi F, Papamargaritis D, Webb DR, Khunti K, Davies MJ. Efficacy and safety of glucagon-like peptide-1 receptor agonists in type 2 diabetes: A systematic review and mixed-treatment comparison analysis. Diabetes Obes Metab 2017; 19:524-536. [PMID: 27981757 DOI: 10.1111/dom.12849] [Citation(s) in RCA: 269] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/29/2016] [Accepted: 12/08/2016] [Indexed: 02/06/2023]
Abstract
AIMS To compare efficacy and safety of glucagon-like peptide-1 receptor agonists (GLP-1RAs) in people with type 2 diabetes. MATERIALS AND METHODS We electronically searched, up to June 3, 2016, published randomized clinical trials lasting between 24 and 32 weeks that compared a GLP-1RA (albiglutide, dulaglutide, twice-daily exenatide and once-weekly exenatide, liraglutide, lixisenatide, semaglutide and taspoglutide) with placebo or another GLP-1RA. Data on cardiometabolic and safety outcomes were analysed using a mixed-treatment comparison meta-analysis. RESULTS A total of 34 trials (14 464 participants) met the inclusion criteria; no published data for semaglutide were available. Compared with placebo, all GLP-1RAs reduced glycated haemoglobin (HbA1c) and fasting plasma glucose (FPG) levels (reductions ranged from -0.55% and -0.73 mmol/L, respectively, for lixisenatide to -1.21% and -1.97 mmol/L, respectively, for dulaglutide). There were no differences within short-acting (twice-daily exenatide and lixisenatide) or long-acting (albiglutide, dulaglutide, once-weekly exenatide, liraglutide and taspoglutide) groups. Compared with twice-daily exenatide, dulaglutide treatment was associated with the greatest HbA1c and FPG reduction (0.51% and 1.04 mmol/L, respectively), followed by liraglutide (0.45% and 0.93 mmol/L, respectively) and once-weekly exenatide (0.38% and 0.85 mmol/L, respectively); similar reductions were found when these 3 agents were compared with lixisenatide. Compared with placebo, all GLP-1RAs except albiglutide reduced weight and increased the risk of hypoglycaemia and gastrointestinal side effects, and all agents except dulaglutide and taspoglutide reduced systolic blood pressure. When all GLP-1RAs were compared with each other, no clinically meaningful differences were observed in weight loss, blood pressure reduction or hypoglycaemia risk. Albiglutide had the lowest risk of nausea and diarrhoea and once-weekly exenatide the lowest risk of vomiting. CONCLUSIONS The RCTs in the present analysis show that all GLP-1RAs improve glycaemic control, reduce body weight and increase the risk of adverse gastrointestinal symptoms compared with placebo. Although there were no differences when short-acting agents were compared with each other or when long-acting agents were compared with each other, dulaglutide, liraglutide and once-weekly exenatide were superior to twice-daily exenatide and lixisenatide at lowering HbA1c and FPG levels. There were no differences in hypoglycaemia between these 3 agents, whilst once-weekly exenatide had the lowest risk of vomiting. These results, along with patient's preferences and individualized targets, should be considered when selecting a GLP-1RA.
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Affiliation(s)
- Zin Z Htike
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Francesco Zaccardi
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Dimitris Papamargaritis
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - David R Webb
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Kamlesh Khunti
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Melanie J Davies
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
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