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GLP-1

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https://www.readbyqxmd.com/read/29453982/glucagon-like-peptide-1-contributes-to-increases-abca1-expression-by-downregulating-mir-758-to-regulate-cholesterol-homeostasis
#1
Yue Yao, Qiang Li, Ping Gao, Wei Wang, Lili Chen, Jinchao Zhang, Yi Xu
Abnormal regulation of lipid metabolism is associated with type 2 diabetes mellitus (T2DM). GLP-1 as a new treatment for T2DM, has unique effects in modulating cholesterol homeostasis. However, the mechanism of this effect is largely missing. The aim of this study was to determine the effects of GLP-1 on cholesterol-induced lipotoxicity in hepatocytes and examine the underlying mechanisms. The cell viability was determined, and caspase-3 was used to detect the effects of GLP-1 on cholesterol-induced apoptosis...
February 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29453463/impact-of-gastric-emptying-and-small-intestinal-transit-on-blood-glucose-intestinal-hormones-glucose-absorption-in-the-morbidly-obese
#2
Nam Q Nguyen, Tamara L Debreceni, Jenna E Burgess, Max Bellon, Judith Wishart, Scott Standfield, Charles-Henri Malbert, Michael Horowitz
This study evaluated gastric emptying (GE) and small intestinal (SI) transit in people with morbid obesity and their relationships to glycaemia, incretin hormones, and glucose absorption METHODS: GE and caecal arrival time (CAT) of a mixed meal were assessed in 22 morbidly obese (50.2 ± 2.5 years; 13 F:9 M; BMI: 48.6 ± 1.8 kg/m 2 ) and 10 lean (38.6 ± 8.4 years; 5 F:5 M; BMI: 23.9 ± 0.7 kg/m 2 ) subjects, using scintigraphy. Blood glucose, plasma 3-O-methylglucose, insulin, glucagon, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) were measured...
January 30, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29451201/tackling-dipeptidyl-peptidase-iv-in-neurological-disorders
#3
REVIEW
Ghaith Al-Badri, Gian Marco Leggio, Giuseppe Musumeci, Rubina Marzagalli, Filippo Drago, Alessandro Castorina
Dipeptidyl peptidase IV (DPP-IV) is a serine protease best known for its role in inactivating glucagon-like peptide-1 (GLP-1), pituitary adenylate cyclase-activating polypeptide (PACAP) and glucose-dependent insulinotropic peptide (GIP), three stimulators of pancreatic insulin secretion with beneficial effects on glucose disposal. Owing to the relationship between DPP-IV and these peptides, inhibition of DPP-IV enzyme activity is considered as an attractive treatment option for diabetic patients. Nonetheless, increasing studies support the idea that DPP-IV might also be involved in the development of neurological disorders with a neuroinflammatory component, potentially through its non-incretin activities on immune cells...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29450114/flavonoid-rich-extract-of-chromolaena-odorata-modulate-circulating-glp-1-in-wistar-rats-computational-evaluation-of-tgr5-involvement
#4
Olaposi Idowu Omotuyi, Oyekanmi Nash, Olumide Kayode Inyang, Joyce Ogidigo, Ojochenemi Enejoh, Okiemute Okpalefe, Tsuyoshi Hamada
Chromolaena odorata is a major bio-resource in folkloric treatment of diabetes. In the present study, its anti-diabetic component and underlying mechanism were investigated. A library containing 140 phytocompounds previously characterized from C. odorata was generated and docked (Autodock Vina) into homology models of dipeptidyl peptidase (DPP)-4, Takeda-G-protein-receptor-5 (TGR5), glucagon-like peptide 1 (GLP1) receptor, renal sodium dependent glucose transporter (SGLUT)-1/2 and nucleotide-binding oligomerization domain (NOD) proteins 1&2...
February 2018: 3 Biotech
https://www.readbyqxmd.com/read/29449181/roux-en-y-gastric-bypass-hypoglycemia-resolves-with-gastric-feeding-or-reversal-confirming-a-non-pancreatic-etiology
#5
Dawn Belt Davis, Jad Khoraki, Martynas Ziemelis, Sirinart Sirinvaravong, Jee Young Han, Guilherme M Campos
OBJECTIVE: Postprandial hypoglycemia is an infrequent but disabling complication of Roux-en-Y gastric bypass (RYGB) surgery. Controversy still exists as to whether the postprandial hyperinsulinemia observed is due to inherent changes in pancreatic β-cell mass or function or to reversible alterations caused by RYGB anatomy. We aimed to determine if gastric feeding or reversal of RYGB would normalize postprandial glucose and hormone excursions in patients with symptomatic hypoglycemia...
January 31, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29448103/fgf-21-deficiency-slows-gastric-emptying-and-reduces-initial-blood-alcohol-concentration-in-mice-exposed-to-acute-alcohol-in-fasting-state
#6
Guicheng Wu, Yanlong Liu, Yunhuan Liu, Lihua Zhang, Haiyang Zhao, Liming Liu, Cuiqing Zhao, Wenke Feng
Excess alcohol consumption can lead to alcoholic liver disease. Fibroblast growth factor 21 (FGF21) is a metabolic regulator with multiple physiologic functions. Previous study demonstrated that FGF21 deficiency exacerbated alcohol-induced liver injury and exogenous FGF21 administration protected liver from chronic alcohol-induced injury. In this study, we aimed to explore the role of FGF21 in alcohol metabolism in mice. FGF21 knockout (KO) mice and the wild time (WT) control mice were divided into two groups and fasted for 24 h followed by a bonus of alcohol treatment at a dose of 5 g/kg body weight via gavage...
February 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29445896/glp-1-receptor-agonists-and-cardiovascular-disease-a-meta-analysis-of-recent-cardiac-outcome-trials
#7
Xiaoming Jia, Mahboob Alam, Yumei Ye, Mandeep Bajaj, Yochai Birnbaum
PURPOSE: The aim of this study is to examine the cardioprotective properties of Glucagon-like peptide-1 receptor agonist, a class of antihyperglycemic therapy, via meta-analysis of four recently published cardiovascular outcomes trials. METHODS: Meta-analysis was performed pooling data from the ELIXA, LEADER, SUSTAIN-6 and EXSCEL trials. A random effects model was used to generate risk ratio with 95% confidence interval for cardiovascular and safety outcomes. RESULTS: A total of 33,457 patients were included in the meta-analysis...
February 14, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29444223/glp-1-receptor-expression-within-the-human-heart
#8
Laurie L Baggio, Bernardo Yusta, Erin E Mulvihill, Xiemin Cao, Catherine J Streutker, Jagdish Butany, Thomas P Cappola, Kenneth B Margulies, Daniel J Drucker
Glucagon-like peptide-1 receptor (GLP-1R) agonists, used to treat type 2 diabetes and obesity, reduce rates of myocardial infarction and cardiovascular death. The GLP-1R has been localized to the human sinoatrial node; however, its expression in ventricular tissue remains uncertain. Here we studied GLP-1R expression in the human heart using GLP-1R-directed antisera, quantitative PCR, reverse transcription PCR to detect full length mRNA transcripts, and in situ hybridization. GLP1R mRNA transcripts, encompassing the entire open reading frame, were detected in all four cardiac chambers from 15 hearts at levels approximating those detected in human pancreas...
February 12, 2018: Endocrinology
https://www.readbyqxmd.com/read/29440961/acute-pancreatitis-during-glp-1-receptor-agonist-treatment-a-case-report
#9
Bogdan Augustin Chis, Daniela Fodor
Glucagon-like peptide 1 receptor agonists (GLP-1RA) are the newest treatment for diabetes mellitus (DM). These drugs can down-regulate fasting glucose more than oral drugs and lead to more constant glucose levels compared to regular insulin. Acute pancreatitis is a serious condition that may have a fatal outcome. It has been shown that long term and high doses of GLP-1RA can cause pancreatic changes in animals, but no connection has been proven in humans. We present the case of a 67 years old man with DM treated with oral drugs for 10 years until 3 months before, when GLP-1RA was added...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29439603/semaglutide-in-type-2-diabetes-is-it-the-best-glucagon-like-peptide-1-receptor-agonist-glp-1r-agonist
#10
Sheila A Doggrell
Glucagon-like peptide-1 (GLP-1) is produced by the gut, and in a glucose-dependent manner stimulates insulin secretion while inhibiting glucagon secretion, reduces appetite and energy intake, and delays gastric emptying. The GLP-1R agonist semaglutide has recently been registered for use in the treatment of type 2 diabetes. Area covered: This review is of semaglutide in type 2 diabetes, and considers which properties of this GLP-1R agonist, may be responsible for its clinical outcome benefits in this condition...
February 13, 2018: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/29438631/plasma-endocannabinoid-levels-in-lean-overweight-and-obese-humans-relationships-with-intestinal-permeability-markers-inflammation-and-incretin-secretion
#11
Tanya J Little, Nada Cvijanovic, Nicholas V DiPatrizio, Donovan A Argueta, Christopher K Rayner, Christine Feinle-Bisset, Richard L Young
INTRODUCTION/AIMS: Intestinal production of endocannabinoid and oleoylethanolamide (OEA) is impaired in high-fat diet/obese rodents, leading to reduced satiety. Such diets also alter the intestinal microbiome in association with enhanced intestinal permeability and inflammation, however little is known of these effects in humans. This study aimed to: (i) evaluate effects of lipid on plasma anandamide (AEA), 2-arachidonyl-sn-glycerol (2-AG) and OEA in humans, and (ii) examine relationships with intestinal permeability, inflammation markers and incretin hormone secretion...
February 13, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29437648/cardiovascular-outcomes-associated-with-canagliflozin-versus-other-non-gliflozin-antidiabetic-drugs-population-based-cohort-study
#12
Elisabetta Patorno, Allison B Goldfine, Sebastian Schneeweiss, Brendan M Everett, Robert J Glynn, Jun Liu, Seoyoung C Kim
OBJECTIVE: To evaluate the cardiovascular safety of canagliflozin, a sodium-glucose cotransporter 2 inhibitor for the treatment of type 2 diabetes mellitus, in direct comparisons with DPP-4 inhibitors (DPP-4i), GLP-1 receptor agonists (GLP-1RA), or sulfonylureas, as used in routine practice. DESIGN: Population based retrospective cohort study. SETTING: Nationwide sample of patients with type 2 diabetes from a large de-identified US commercial healthcare database (Optum Clinformatics Datamart)...
February 6, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29435980/the-diabetes-drug-liraglutide-reverses-cognitive-impairment-in-mice-and-attenuates-insulin-receptor-and-synaptic-pathology-in-a-non-human-primate-model-of-alzheimer-s-disease
#13
Andre F Batista, Leticia Forny-Germano, Julia R Clarke, Natalia M Lyra E Silva, Jordano Brito-Moreira, Susan E Boehnke, Andrew Winterborn, Brian C Coe, Ann Lablans, Juliana F Vital, Suelen A Marques, Ana M B Martinez, Matthias Gralle, Christian Holscher, William L Klein, Jean-Christophe Houzel, Sergio T Ferreira, Douglas P Munoz, Fernanda G De Felice
Alzheimer's disease (AD) is a devastating neurological disorder that still lacks an effective treatment, and this has stimulated an intense pursuit of disease-modifying therapeutics. Given the increasingly recognized link between AD and defective brain insulin signaling, we investigated the actions of liraglutide, a glucagon-like peptide-1 (GLP-1) analog marketed for treatment of type 2 diabetes, in experimental models of AD. Insulin receptor pathology is an important feature of AD brains that impairs the neuroprotective actions of central insulin signaling...
February 12, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29433086/potential-roles-for-glucagon-like-peptide-1-7-36-amide-and-cholecystokinin-in-anorectic-response-to-the-trichothecene-mycotoxin-t-2-toxin
#14
Wenda Wu, Kun Sheng, Xinglian Xu, Haibin Zhang, Guanghong Zhou
Anorexia is a hallmark of animal and human exposed to T-2 toxin, a most poisonous trichothecene mycotoxins contaminating various cereal grains including wheat, corn and barley. Although this adverse effect has been well characterized in several animal species, the underlying mechanisms are unclear. The goal for this study was to elucidate the roles of two gut satiety hormones, glucagon-like peptide-17-36amide (GLP-1) and cholecystokinin (CCK) in T-2 toxin-evoked anorectic response using a mouse anorexia bioassay...
February 9, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29432213/regulation-of-intestinal-lipid-and-lipoprotein-metabolism-by-the-proglucagon-derived-peptides-glucagon-like-peptide-1-and-glucagon-like-peptide-2
#15
Erin E Mulvihill
PURPOSE OF REVIEW: The intestine is highly efficient at absorbing and packaging dietary lipids onto the structural protein apoB48 for distribution throughout the body. Here, we summarize recent advances into understanding the physiological and pharmacological actions of the proglucagon-derived peptides: glucagon like peptide 1 (GLP-1) and glucagon like peptide 2 (GLP-2) on intestinal lipoprotein secretion. RECENT FINDINGS: Several recent studies have elucidated mechanisms underlying the paradoxical effects of GLP-1 and GLP-2 on intestinal production of triglyceride-rich lipoproteins (TRLs)...
February 9, 2018: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/29431535/differences-in-the-postprandial-release-of-appetite-related-hormones-between-active-and-inactive-men
#16
Linn Bøhler, Sílvia Ribeiro Coutinho, Jens F Rehfeld, Linda Morgan, Catia Martins
Active, as opposed to inactive, individuals are able to adjust their energy intake after preloads of different energy content. The mechanisms responsible for this remain unknown. This study examined differences in plasma concentration of appetite-related hormones in response to breakfasts of different energy content, between active and inactive men. 16 healthy non-obese (BMI 18.5-27 kg/m2) adult males (9 active, 7 inactive), participated in the study. Participants were given a high- (HE, 570 kcal) or a low-energy (LE, 205 kcal) breakfast in random order...
February 12, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29431265/blockade-of-cannabinoid-1-receptor-improves-glucose-responsiveness-in-pancreatic-beta-cells
#17
Hanho Shin, Ji Hye Han, Juhwan Yoon, Hyo Jung Sim, Tae Joo Park, Siyoung Yang, Eun Kyung Lee, Rohit N Kulkarni, Josephine M Egan, Wook Kim
Cannabinoid 1 receptors (CB1Rs) are expressed in peripheral tissues, including islets of Langerhans, where their function(s) is under scrutiny. Using mouse β-cell lines, human islets and CB1R-null (CB1R-/- ) mice, we have now investigated the role of CB1Rs in modulating β-cell function and glucose responsiveness. Synthetic CB1R agonists diminished GLP-1-mediated cAMP accumulation and insulin secretion as well as glucose-stimulated insulin secretion in mouse β-cell lines and human islets. In addition, silencing CB1R in mouse β cells resulted in an increased expression of pro-insulin, glucokinase (GCK) and glucose transporter 2 (GLUT2), but this increase was lost in β cells lacking insulin receptor...
February 12, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29430842/glucagon-like-peptide-1-glp-1-based-therapeutics-current-status-and-future-opportunities-beyond-type-2-diabetes
#18
Jia Ying Cheang, Peter Michael Moyle
Glucagon-like peptide-1 (GLP-1) is secreted by intestinal L-cells following food intake, and plays an important role in glucose homeostasis due to its stimulation of glucose-dependent insulin secretion. Further, GLP-1 is also associated with protective effects on pancreatic β-cells and the cardiovascular system, reduced appetite, and weight loss, making GLP-1 derivatives an exciting treatment for type 2 diabetes and obesity. Despite these benefits, wild-type GLP-1 exhibits a short circulation time, due to its poor metabolic stability and rapid renal clearance, and needs to be administered by injection, making it a poor therapeutic agent...
February 11, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29427691/subjective-satiety-and-plasma-pyy-concentration-after-wholemeal-pasta
#19
Giuseppina Costabile, Ettore Griffo, Paola Cipriano, Claudia Vetrani, Marilena Vitale, Gianfranco Mamone, Angela A Rivellese, Gabriele Riccardi, Rosalba Giacco
Dietary fiber and whole grain foods may contribute to the regulation of appetite; however, evidence has produced inconclusive findings. The objective was to evaluate the effects of an experimental wholemeal pasta on appetite ratings, plasma concentrations of gastrointestinal hormones involved in appetite control, and postprandial glucose/insulin responses in healthy adults. Fourteen healthy adults (7M/7F), mean age 30 ± 2 yrs (mean ± SEM), participated in a randomized, controlled, crossover trial...
February 7, 2018: Appetite
https://www.readbyqxmd.com/read/29424239/assessment-of-cardiovascular-risk-with-glucagon-like-peptide-1-receptor-agonists-in-patients-with-type-2-diabetes-using-an-alternative-measure-to-the-hazard-ratio
#20
Masayuki Kaneko, Mamoru Narukawa
BACKGROUND: Randomized clinical trials with the aim of evaluating the cardiovascular risks associated with glucagon-like peptide 1 (GLP-1) receptor agonists, lixisenatide, liraglutide, semaglutide, and exenatide, have been conducted. They showed different results among the agents, but the reason has not been explained. OBJECTIVE: To evaluate the cardiovascular risks associated with GLP-1 receptor agonists by using an alternative measure to the hazard ratio. METHODS: We used the difference in restricted mean survival time (RMST) as a measure of cardiovascular risks...
February 1, 2018: Annals of Pharmacotherapy
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