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Diabetes AND glp-1

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https://www.readbyqxmd.com/read/29144968/a-synaptic-basis-for-glp-1-action-in-the-brain
#1
Sandrine Lefort, Matthias H Tschöp, Cristina García-Cáceres
Unraveling the brain control of metabolism may generate opportunities to discover novel precision medicines for obesity and diabetes. In this issue of Neuron, Liu et al. (2017) identify a novel glucagon-like peptide (GLP)-1 receptor-dependent signaling process that exerts anorexigenic action via the regulation of AMPA receptor subunit composition in the hypothalamus.
November 15, 2017: Neuron
https://www.readbyqxmd.com/read/29144805/dpp4-inhibitor-sitagliptin-as-a-potential-treatment-option-in-metformin-intolerant-obese-women-with-polycystic-ovary-syndrome-a-pilot-randomized-study
#2
Simona Ferjan, Andrej Janez, Mojca Jensterle
OBJECTIVE: Metformin has an established role in the management of polycystic ovary syndrome (PCOS). Some patients cannot tolerate it due to associated gastrointestinal adverse events. The present study evaluated DPP4 inhibitor sitagliptin as a potential treatment option in metformin intolerant PCOS. DESIGN: We conducted a 12-week prospective randomized open-label study with 30 obese metformin intolerant women with PCOS (aged 35.0±7.2 years, BMI 36.9±5.5 kg/m(2))...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29137984/recombinant-human-glp-1-rhglp-1-alleviating-renal-tubulointestitial-injury-in-diabetic-stz-induced-rats
#3
Weiqin Yin, Shiqing Xu, Zai Wang, Honglin Liu, Liang Peng, Qing Fang, Tingting Deng, Wenjian Zhang, Jinning Lou
GLP-1-based treatment improves glycemia through stimulation of insulin secretion and inhibition of glucagon secretion. Recently, more and more findings showed that GLP-1 could also protect kidney from diabetic nephropathy. Most of these studies focused on glomeruli, but the effect of GLP-1 on tubulointerstitial and tubule is not clear yet. In this study, we examined the renoprotective effect of recombinant human GLP-1 (rhGLP-1), and investigated the influence of GLP-1 on inflammation and tubulointerstitial injury using diabetic nephropathy rats model of STZ-induced...
November 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29135069/impaired-secretion-of-active-glp-1-in-patients-with-hypertriglyceridaemia-a-novel-lipotoxicity-paradigm
#4
Xiangxiang Wang, Jia Liu, Chaolin Li, Meng Zhao, Lu Liu, Qingbo Guan, Haiqing Zhang, Xu Zhang, Ling Gao, Jiajun Zhao, Yongfeng Song
AIM: Lipotoxicity plays an important role in the pathogenesis of β-cell dysfunction. Glucagon-like peptide-1 (GLP-1) is an incretin hormone that exerts beneficial effects on the number and function of islet β cells. However, the effect of lipotoxicity on GLP-1 secretion is still unknown. METHODS: Twenty-five patients who were newly diagnosed with diabetes were recruited from 400 subjects based on 75 g Oral Glucose Tolerance Test (OGTT). Patients were divided into diabetes (DM) and DM combined with hypertriglyceridaemia (DM+HTG) groups according to their serum triglyceride (TG) levels...
November 14, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/29134607/the-cost-effectiveness-of-dulaglutide-1-5mg-versus-exenatide-qw-for-the-treatment-of-patients-with-type-2-diabetes-mellitus-in-france
#5
Mickael Basson, Dionysios Ntais, Ruba Ayyub, Donna Wright, Julia Lowin, Florence Chartier, Stéphane Roze, Kirsi Norrbacka
INTRODUCTION: Dulaglutide is a novel onceweekly administered glucagon-like peptide 1 receptor agonist (GLP-1 RA) for the management of type 2 diabetes mellitus (T2DM). The objective of this analysis was to estimate the cost-effectiveness of dulaglutide 1.5 mg versus exenatide QW for the management of T2DM in France. METHODS: The QuintilesIMS CORE Diabetes Model was used to estimate the expected lifetime direct medical costs and outcomes of T2DM from the perspective of the French National Health Service...
November 13, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29133778/glucagon-like-peptide-1-glp-1-receptor-agonist-liraglutide-alters-bone-marrow-exosome-mediated-mirna-signal-pathways-in-ovariectomized-rats-with-type-2-diabetes
#6
Jin Li, Ling-Zhi Fu, Lu Liu, Fen Xie, Ru-Chun Dai
BACKGROUND Compared with normal postmenopausal women, estrogen deficiency and hyperglycemia in postmenopausal women with type 2 diabetes (T2DM) lead to more severe bone property degradation. Liraglutide, a glucagon-like peptide-1 (GLP-1) receptor agonist, has been reported to improve bone condition among people with T2DM but the precise mechanisms remain unclear. Exosomes work as mediators in cell-to-cell communication, delivering functional miRNAs between cells. We aimed to explore the role of exosomes in T2DM-related bone metabolic disorders and the bone protective mechanisms of liraglutide...
November 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29132091/effect-of-anti-diabetic-drugs-on-bone-metabolism-evidence-from-preclinical-and-clinical-studies
#7
REVIEW
Mohammad Adil, Rashid Ali Khan, Abul Kalam, Shiva Kumar Venkata, Amit Dattatraya Kandhare, Pinaki Ghosh, Manju Sharma
Diabetes mellitus is associated with abnormal bone health and an increased risk of fracture even though patients have normal or higher BMD. The mechanisms behind diabetes mellitus- induced various skeletal disorders remain unclear. Anti-diabetic drugs may have negative or positive impact on bone metabolism. For instance, thiazolidinediones increases the bone loss and risk of fracture possibly through PPARγ activation in bone marrow cells and hamper osteoblastogenesis via decreasing Runx2 transcription factor, IGF-1 and Wnt signalling pathways...
May 25, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29130686/thioamide-substitution-selectively-modulates-proteolysis-and-receptor-activity-of-therapeutic-peptide-hormones
#8
Xing Chen, Elizabeth G Mietlicki-Baase, Taylor M Barrett, Lauren E McGrath, Kieran Koch-Laskowski, John J Ferrie, Matthew R Hayes, E James Petersson
Peptide hormones are attractive as injectable therapeutics and imaging agents, but they often require extensive modification by mutagenesis and/or chemical synthesis to prevent rapid in vivo degradation. Alternatively, the single-atom, O-to-S modification of peptide backbone thioamidation has the potential to selectively perturb interactions with proteases while preserving interactions with other proteins, such as target receptors. Here, we use the validated diabetes therapeutic, glucagon-like peptide-1 (GLP-1), and the target of clinical investigation, gastric inhibitory polypeptide (GIP), as proof-of-principle peptides to demonstrate the value of thioamide substitution...
November 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29121068/metabolic-regulation-of-glp-1-and-pc1-3-in-pancreatic-%C3%AE-cell-line
#9
Veronica Sancho, Giuseppe Daniele, Daniela Lucchesi, Roberto Lupi, Annamaria Ciccarone, Giuseppe Penno, Cristina Bianchi, Angela Dardano, Roberto Miccoli, Stefano Del Prato
BACKGROUND AND AIMS: An intra-islet incretin system has been recently suggested to operate through modulation of the expression and activity of proconvertase 1/3 and 2 (PC1/3, PC2) in pancreatic alpha-cell accounting for local release of GLP-1. Little is known, whether this alpha-cell activity can be affected by the metabolic alterations occurring in type 2 diabetes, such as hyperglycemia, hyperlipidemia or hyperglucagonemia. MATERIALS AND METHODS: AlphaTC1/6 cells from a mice pancreatic cell line were incubated in the presence of two glucose (G) concentration (5...
2017: PloS One
https://www.readbyqxmd.com/read/29119712/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
#10
L Tong, C Pan, H Wang, M Bertolini, E Lew, L F Meneghini
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(TM) , in adult patients with T2D who initiated basal insulin between 1 January 2005 and 31 December 2012 with or without OADs, but remained uncontrolled (glycated haemoglobin [HbA1c] ≥7.0%)...
November 8, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29119245/development-and-characterisation-of-a-novel-glucagon-like-peptide-1-receptor-antibody
#11
Emma K Biggs, Lihuan Liang, Jacqueline Naylor, Shimona Madalli, Rachel Collier, Matthew P Coghlan, David J Baker, David C Hornigold, Peter Ravn, Frank Reimann, Fiona M Gribble
AIMS/HYPOTHESIS: Glucagon like peptide-1 (GLP-1) enhances glucose-dependent insulin secretion by binding to GLP-1 receptors (GLP1Rs) on pancreatic beta cells. GLP-1 mimetics are used in the clinic for the treatment of type 2 diabetes, but despite their therapeutic success, several clinical effects of GLP-1 remain unexplained at a mechanistic level, particularly in extrapancreatic tissues. The aim of this study was to generate and characterise a monoclonal antagonistic antibody for the GLP1R for use in vivo...
November 9, 2017: Diabetologia
https://www.readbyqxmd.com/read/29118282/the-role-of-bile-acids-in-glucose-metabolism-and-their-relation-with-diabetes
#12
José Alberto González-Regueiro, Lidia Moreno-Castañeda, Misael Uribe, Norberto C Chávez-Tapia
Bile acids (BAs), the end products of cholesterol catabolism, are essential for the absorption of lipids and fat-soluble vitamins; but they have also emerged as novel signaling molecules that act as metabolic regulators. It has been well described that the enterohepatic circulation, a nuclear (FXR) and a cytoplasmic (TGR5/M-BAR) receptor aid in controlling hepatic bile acid synthesis. Modulating bile acid synthesis greatly impacts in metabolism, because these receptors also are implicated in glucose, lipid, and energy expenditure...
October 4, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29115211/measurement-of-gastrointestinal-hormones
#13
Nicolai J Wewer Albrechtsen
Towards the end of the 20th century, the number of subjects with diabetes and obesity rose exponentially. The discoveries of insulin- and appetite-modulating chemical signals, including glucagon-like peptide-1 (GLP-1), secreted from the gastrointestinal system, led to development of a new group of drugs which now are being used for glucose-lowering therapy and weight loss. Understanding of the physiology of gut derived signals and their pathophysiologi-cal importance requires accurate measurements of their circulat-ing levels...
November 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/29113708/efficacy-and-safety-of-glucagon-like-peptide-1-agonists-on-macrovascular-and-microvascular-events-in-type-2-diabetes-mellitus-a-meta-analysis
#14
P Gargiulo, G Savarese, C D'Amore, F De Martino, L H Lund, F Marsico, S Dellegrottaglie, C Marciano, B Trimarco, P Perrone-Filardi
AIMS: Glucagon-like peptide-1 (GLP-1) agonists improve glycaemic control in type 2 diabetes mellitus (DM). Outcome trials investigating macro and microvascular effects of GLP-1 agonists reported conflicting results. The aim of this study was to assess, in a meta-analysis, the effects of GLP-1 agonists on mortality, major nonfatal cardiovascular (CV) events, renal and retinal events. DATA SYNTHESIS: MEDLINE, Cochrane, ISI Web of Science, SCOPUS and ClinicalTrial...
September 28, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29113464/a-new-treatment-strategy-for-parkinson-s-disease-through-the-gut-brain-axis-the-glucagon-like-peptide-1-receptor-pathway
#15
Dong Seok Kim, Ho-Il Choi, Yun Wang, Yu Luo, Barry J Hoffer, Nigel H Greig
Molecular communications in the gut-brain axis, between the central nervous system and the gastrointestinal tract, are critical for maintaining healthy brain function, particularly in aging. Epidemiological analyses indicate type 2 diabetes mellitus (T2DM) is a risk factor for neurodegenerative disorders including Alzheimer's disease (AD) and Parkinson's diseases (PD) for which aging shows a major correlative association. Common pathophysiological features exist between T2DM, AD, and PD, including oxidative stress, inflammation, insulin resistance, abnormal protein processing, and cognitive decline, and suggest that effective drugs for T2DM that positively impact the gut-brain axis could provide an effective treatment option for neurodegenerative diseases...
September 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29107282/the-autonomic-nervous-system-and-cardiac-glp-1-receptors-control-heart-rate-in-mice
#16
Laurie L Baggio, John R Ussher, Brent A McLean, Xiemin Cao, M Golam Kabir, Erin E Mulvihill, Alexandra S Mighiu, Hangjun Zhang, Andreas Ludwig, Randy J Seeley, Scott P Heximer, Daniel J Drucker
OBJECTIVES: Glucagon-like peptide-1 (GLP-1) is secreted from enteroendocrine cells and exerts a broad number of metabolic actions through activation of a single GLP-1 receptor (GLP-1R). The cardiovascular actions of GLP-1 have garnered increasing attention as GLP-1R agonists are used to treat human subjects with diabetes and obesity that may be at increased risk for development of heart disease. Here we studied mechanisms linking GLP-1R activation to control of heart rate (HR) in mice...
November 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29106046/retrospective-analysis-of-liraglutide-and-basal-insulin-combination-therapy-in-japanese-type-2-diabetes-the-association-between-remaining-%C3%AE-cell-function-and-the-achievement-of-the-hba1c-target-one-year-after-initiation
#17
Ryota Usui, Yui Sakuramachi, Yusuke Seino, Kenta Murotani, Hitoshi Kuwata, Hisato Tatsuoka, Yoshiyuki Hamamoto, Takeshi Kurose, Yutaka Seino, Daisuke Yabe
BACKGROUND AND AIMS: The glucose-lowering effects of the GLP-1 receptor agonist liraglutide have been shown to rely on remaining β-cell function. However, the possible associations of remaining β-cell function with the glucose-lowering effects of liraglutide in combination with basal insulin remain unknown and warrant investigation. METHODS: This is a single-center, retrospective, observational study conducted in a private hospital in Osaka, Japan. Type 2 diabetes patients who received a prescription change from insulin therapy, both multiple-dose insulin (MDI) and basal insulin-supported oral therapy (BOT), to liraglutide/basal insulin combination and continued the therapy for 54 weeks without additional oral anti-diabetic drugs (OAD) or bolus insulin were retrospectively analyzed...
November 6, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29104476/glp-1-treatment-improves-diabetic-retinopathy-by-alleviating-autophagy-through-glp-1r-erk1-2-hdac6-signaling-pathway
#18
Xiangsheng Cai, Jingjing Li, Mingzhu Wang, Miaoqin She, Yongming Tang, Jinlong Li, Hongwei Li, Hongxiang Hui
Objective: Apoptosis and autophagy of retinal cells, which may be induced by oxidative stress, are tightly associated with the pathogenesis of diabetic retinopathy (DR). The autophagy induced by oxidative stress is considered as excessively stimulated autophagy, which accelerates the progression of DR. This study aims to investigate the protective effect of GLP-1 treatment on alleviating apoptosis and autophagy of retinal cells in type 2 diabetic rats and reveals its possible mechanism. Methods: Type 2 diabetic rats were induced by fed with high sugar, high fat diet and followed with streptozotocin injection...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29099978/glucose-dependent-insulinotropic-polypeptide-gip-inhibits-bone-resorption-independently-of-insulin-and-glycemia
#19
Mikkel B Christensen, Asger Lund, Salvatore Calanna, Niklas R Jørgensen, Jens J Holst, Tina Vilsbøll, Filip K Knop
Context: The gut hormone GIP causes postprandial insulin release and inhibits bone resorption assessed by carboxy-terminal collagen crosslinks (CTX). Objective: To clarify if GIP affects biomarkers involved in bone homeostasis independently of insulin release and glycemic level. Design: Randomized, double-blinded, cross-over study with 5 study days. Patients: Ten lean male C-peptide-negative patients with type 1 diabetes...
November 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29098544/preserving-duodenal-jejunal-foregut-transit-does-not-impair-glucose-tolerance-and-diabetes-remission-following-gastric-bypass-in-type-2-diabetes-sprague-dawley-rat-model
#20
Ponnie R Dolo, Libin Yao, Chao Li, Xiaocheng Zhu, Linsen Shi, Jason Widjaja
BACKGROUND: Possible mechanisms underlying diabetes remission following Roux-en-Y gastric bypass (RYGB) include eradication of putative factor(s) with duodenal-jejunal bypass. OBJECTIVE: The objective of this study is to observe the effects of duodenal-jejunal transit on glucose tolerance and diabetes remission in gastric bypass rat model. METHOD: In order to verify the effect of duodenal-jejunal transit on glucose tolerance and diabetes remission in gastric bypass, 22 type 2 diabetes Sprague-Dawley rat models established through high-fat diet and low-dose streptozotocin (STZ) administered intraperitoneally were assigned to one of three groups: gastric bypass with duodenal-jejunal transit (GB-DJT n = 8), gastric bypass without duodenal-jejunal transit (RYGB n = 8), and sham (n = 6)...
November 2, 2017: Obesity Surgery
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