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Glucagon-like peptide

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https://www.readbyqxmd.com/read/29053203/preoperative-weight-loss-with-glp-1-receptor-agonist-treatment-predicts-greater-weight-loss-achieved-by-the-combination-of-medical-weight-management-and-bariatric-surgery-in-patients-with-type-2-diabetes-a-longitudinal-analysis
#1
Tien Tang, Sally Abbott, Carel W le Roux, Violet Wilson, Rishi Singhal, Srikanth Bellary, Abd Tahrani
We examined the relationship between weight changes following preoperative glucagon-like peptide-1 receptor agonist (GLP-1 RA) and weight changes from the start of medical weight management (MWM) till 12 months after bariatric surgery in patients with Type 2 diabetes in a retrospective cohort study. Forty-five patients (64.4% women, median age 49 (IQR 45-60) years) were included. The median weight loss from start of MWM until 12 months post-surgery was 17.9% (13.0%-29.3%). GLP-1 RA during MWM resulted in 5...
October 20, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29051554/recombinant-incretin-secreting-microbe-improves-metabolic-dysfunction-in-high-fat-diet-fed-rodents
#2
Paul M Ryan, Elaine Patterson, Robert M Kent, Helena Stack, Paula M O'Connor, Kiera Murphy, Veronica L Peterson, Rupasri Mandal, David S Wishart, Timothy G Dinan, John F Cryan, Randy J Seeley, Catherine Stanton, R Paul Ross
The gut hormone glucagon-like peptide (GLP)-1 and its analogues represent a new generation of anti-diabetic drugs, which have also demonstrated propensity to modulate host lipid metabolism. Despite this, drugs of this nature are currently limited to intramuscular administration routes due to intestinal degradation. The aim of this study was to design a recombinant microbial delivery vector for a GLP-1 analogue and assess the efficacy of the therapeutic in improving host glucose, lipid and cholesterol metabolism in diet induced obese rodents...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29050859/neuroprotective-effects-of-a-triple-glp-1-gip-glucagon-receptor-agonist-in-the-app-ps1-transgenic-mouse-model-of-alzheimer-s-disease
#3
Jingjing Tai, Weizhen Liu, Yanwei Li, Lin Li, Christian Hölscher
Type 2 diabetes mellitus (T2DM) is a risk factor for Alzheimer disease (AD). Previous studies have shown that the incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) that have anti-diabetic properties show very promising effects in animal models of AD. Glucagon (Gcg) is a hormone and growth-factor, and the Gcg receptor is expressed in the brain. Here we test the effects of a triple receptor agonist (TA), which activates GIP-1, GIP and glucagon receptors at the same time...
October 16, 2017: Brain Research
https://www.readbyqxmd.com/read/29050005/effect-of-salt-intake-on-serum-glucagon-like-peptide-1-levels-in-normotensive-salt-sensitive-subjects
#4
Wen-Ling Zheng, Chao Chu, Yong-Bo Lv, Yang Wang, Jia-Wen Hu, Qiong Ma, Yu Yan, Yu-Meng Cao, Xi-Long Dang, Ke-Ke Wang, Jian-Jun Mu
BACKGROUND/AIMS: Excess dietary salt is a critical risk factor of salt-sensitive hypertension. Glucagon-like peptide-1 (GLP-1) , a gut incretin hormone, conferring benefits for blood pressure by natriuresis and diuresis. We implemented a randomized trial to verify the effect of altered salt intake on serum GLP-1 level in human beings. METHODS: The 38 subjects were recruited from a rural community of Northern China. All subjects were sequentially maintained a baseline diet period for 3 days, a low-salt diet period for 7 days (3...
October 19, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29049653/effect-of-oral-semaglutide-compared-with-placebo-and-subcutaneous-semaglutide-on-glycemic-control-in-patients-with-type-2-diabetes-a-randomized-clinical-trial
#5
Melanie Davies, Thomas R Pieber, Marie-Louise Hartoft-Nielsen, Oluf K H Hansen, Serge Jabbour, Julio Rosenstock
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...
October 17, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29047219/addition-of-dipeptidyl-peptidase-4-inhibitors-to-insulin-treatment-in-type-2-diabetes-patients-a-meta-analysis
#6
Wenjia Yang, Xiaoling Cai, Xueying Gao, Yifei Chen, Chen Ling, Linong Ji
AIMS: To evaluate the efficacy and safety of combining insulin therapy with dipeptidyl peptidase 4 (DPP-4) inhibitors compared to combining insulin therapy with placebo or other antihyperglycaemic agents. MATERIALS AND METHODS: A literature search was conducted via electronic databases. The inclusion criteria were randomized controlled trials (RCTs) comparing the addition of DPP-4 inhibitors to insulin with the addition of placebo or other active hypoglycaemic agents to insulin therapy, study duration of no less than 12 weeks performed in type 2 diabetes patients, and the availability of outcome data to evaluate a change in the HbA1c ...
October 19, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29046727/elevated-circulating-fasting-glucagon-like-peptide-1-in-surgical-patients-with-aortic-valve-disease-and-diabetes
#7
Camilla Krizhanovskii, Stelia Ntika, Christian Olsson, Per Eriksson, Anders Franco-Cereceda
BACKGROUND: Diabetes is a risk factor for peripheral, coronary, and cerebrovascular disease. In contrast, results also indicate that patients with diabetes have reduced prevalence of aortic aneurysms, although the mechanisms remain largely unknown. We hypothesize that altered endogenous secretion of the intestinal hormone glucagon-like peptide-1 (GLP-1)-previously shown to protect from aneurysm formation, and governing many of the mechanisms thought to be involved in aneurysm formation-may provide insights into the mechanisms underlying the inverse relationship of diabetes and aneurysm...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29045658/exendin-4-a-glucagon-like-peptide-1-receptor-agonist-attenuates-breast-cancer-growth-by-inhibiting-nf-%C3%AE%C2%BAb-activation
#8
Chikayo Iwaya, Takashi Nomiyama, Shiho Komatsu, Takako Kawanami, Yoko Tsutsumi, Yuriko Hamaguchi, Tsuyoshi Horikawa, Yasuteru Yoshinaga, Shinichi Yamashita, Tomoko Tanaka, Yuichi Terawaki, Makito Tanabe, Kazuki Nabeshima, Akinori Iwasaki, Toshihiko Yanase
Incretin therapies have received significant attention because of their tissue-protective effects, which extend beyond those associated with glycemic control. Cancer is a primary cause of death in patients with diabetes mellitus. We previously reported anti-prostate cancer effects of the glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) agonist exendin-4 (Ex-4). Breast cancer is one of the most common cancers in female patients with type 2 diabetes mellitus and obesity. Thus, we examined whether GLP-1 action could attenuate breast cancer...
October 13, 2017: Endocrinology
https://www.readbyqxmd.com/read/29044799/insulin-secretory-defect-in-familial-partial-lipodystrophy-type-2-and-successful-long-term-treatment-with-a-glucagon-like-peptide-1-receptor-agonist
#9
F Banning, M Rottenkolber, I Freibothe, J Seissler, A Lechner
BACKGROUND: Familial partial lipodystrophies are rare monogenic disorders that are often associated with diabetes. In such cases, it can be difficult to achieve glycaemic control. CASE REPORT: We report a 34-year old woman with familial partial lipodystrophy type 2 (Dunnigan) and diabetes; her hyperglycaemia persisted despite metformin treatment. A combined intravenous glucose tolerance-euglycaemic clamp test showed severe insulin resistance, as expected, but also showed strongly diminished first-phase insulin secretion...
October 17, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29044772/rd-lawrence-lecture-2017-incretins-the-intelligent-hormones-in-diabetes
#10
V A Gault
The incretin hormones glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) have attracted considerable scientific and clinical interest due largely to their insulin-releasing and glucose-lowering properties. Indeed, GLP-1-based therapies are now key treatment options for many people with diabetes worldwide. In contrast, GIP-based agents have yet to reach the clinic based primarily on the impaired insulinotropic action of GIP observed in people with diabetes. Nevertheless, GIP is a key physiological regulator of insulin secretion and stable forms of GIP show much promise in rodent models to alleviate diabetes-obesity...
October 16, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29044434/glp-1-increases-kiss-1-mrna-expression-in-kisspeptin-expressing-neuronal-cells
#11
Aki Oride, Haruhiko Kanasaki, Tselmeg Mijiddorj, Unurjargal Sukhbaatar, Tomomi Hara, Tuvshintugs Tumurbaatar, Satoru Kyo
Feeding-related metabolic factors exert regulatory influences on the hypothalamic-pituitary-gonadal axis. Glucagon-like peptide-1 (GLP-1) is an anorexigenic hormone synthesized from the ileum in response to food intake. The purpose of this study was to examine the direct effect of GLP-1 on hypothalamic kisspeptin and gonadotropin-releasing hormone (GnRH) expression using the rat clonal hypothalamic cell line rHypoE-8. GLP-1 significantly increased Kiss-1 mRNA expression in rHypoE-8 cells up to 1.94 ± 0.22-fold...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29041949/incretins-in-patients-with-rheumatoid-arthritis
#12
Beatriz Tejera-Segura, Raquel López-Mejías, María Jesús Domínguez-Luis, Antonia M de Vera-González, Alejandra González-Delgado, Begoña Ubilla, José M Olmos, José L Hernández, Miguel A González-Gay, Iván Ferraz-Amaro
BACKGROUND: The precise mechanism linking systemic inflammation with insulin resistance (IR) in rheumatoid arthritis (RA) remains elusive. In the present study, we determined whether the incretin-insulin axis and incretin effect are disrupted in patients with RA and if they are related to the IR found in these patients. METHODS: We conducted a cross-sectional study that encompassed 361 subjects without diabetes, 151 patients with RA, and 210 sex-matched control subjects...
October 17, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29040429/the-role-of-glp-1-in-the-metabolic-success-bariatric-surgery
#13
Chelsea R Hutch, Darleen Sandoval
Two of the most popular bariatric procedures, vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass (RYGB), are commonly considered 'metabolic surgeries' because they are thought to impact metabolism in a weight loss-independent manner. In support of this, improvements in glucose homeostasis, insulin sensitivity, and even discontinuation of type 2 diabetes mellitus (T2DM) medication can occur before substantial postoperative weight loss. The mechanisms that underlie this effect are unknown. However, one of the common findings after VSG and RYGB in both animal models and in humans is the sharp postprandial rise in several gut peptides, including the incretin and satiety peptide, glucagon-like peptide-1 (GLP-1)...
October 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/29037268/probiotics-prebiotics-synbiotics-and-insulin-sensitivity
#14
Y A Kim, J B Keogh, P M Clifton
Animal studies indicate that the composition of gut microbiota may be involved in the progression of insulin resistance to type 2 diabetes. Probiotics and/or prebiotics could be a promising approach to improve insulin sensitivity by favourably modifying the composition of the gut microbial community, reducing intestinal endotoxin concentrations and decreasing energy harvest. The aim of the present review was to investigate the effects of probiotics, prebiotics and synbiotics (a combination of probiotics and prebiotics) on insulin resistance in human clinical trials and to discuss the potential mechanisms whereby probiotics and prebiotics improve glucose metabolism...
October 17, 2017: Nutrition Research Reviews
https://www.readbyqxmd.com/read/29034596/regulation-of-glucagon-like-peptide-1-sensitivity-by-gut-microbiota-dysbiosis
#15
Shunsuke Yamane, Nobuya Inagaki
Gut hormonal substances released in response to nutrients include incretins, gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1). Together, incretins are responsible for 50%-60% of postprandial insulin secretion. Oral glucose administration leads to greater insulin release from pancreatic islets than intravenous glucose loading that yields equivalent blood glucose levels; this phenomenon is called the incretin effect. This article is protected by copyright. All rights reserved.
October 16, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29034530/gene-expression-and-morphological-changes-in-the-intestinal-mucosa-associated-with-increased-permeability-induced-by-short-term-fasting-in-chickens
#16
S Gilani, G S Howarth, G Nattrass, S M Kitessa, R Barekatain, R E A Forder, C D Tran, R J Hughes
Short-term fasting for 4.5 and 9 hr has been demonstrated to increase intestinal permeability (IP) in chickens. This study aimed to investigate the effects of 0, 4.5, 9 and 19.5 hr fasting on intestinal gene expression and villus-crypt architecture of enterocytes in jejunal and ileal samples. On day 38, Ross-308 male birds were fasted according to their group and then euthanised. Two separate intestinal sections (each 2 cm long, jejunum and ileum) were collected. One section was utilised for villus height and crypt depth measurements...
October 16, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29033597/reasons-for-discontinuation-of-glp1-receptor-agonists-data-from-a-real-world-cross-sectional-survey-of-physicians-and-their-patients-with-type-2-diabetes
#17
Mirko V Sikirica, Alan A Martin, Robert Wood, Andrea Leith, James Piercy, Victoria Higgins
AIM: Nonadherence to glucagon-like peptide-1 receptor agonists (GLP1 RAs) is relatively common among patients with type 2 diabetes mellitus (T2DM). This study sought to identify reasons why patients discontinue GLP1 RAs. MATERIALS AND METHODS: Retrospective data from the Adelphi Diabetes Disease Specific Programme were used. Physicians managing patients with T2DM were surveyed via face-to-face interviews, and patients treated for T2DM were surveyed via self-completed questionnaires...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/29032333/glucagon-like-peptide-1-improves-%C3%AE-cell-dysfunction-by-suppressing-the-mir-27a-induced-downregulation-of-atp-binding-cassette-transporter-a1
#18
Yue Yao, Yi Xu, Wei Wang, Jinchao Zhang, Qiang Li
Lipotoxicity is considered one of the main causes of deterioration in β-cells function. Glucagon-like peptide-1 (GLP-1) has been revealed to protect and improve pancreatic β-cell function against lipotoxicity. However, the mechanism behind these is largely unknown. The aim of this study was to investigate the effects of GLP-1 on cholesterol-induced lipotoxicity in INS-1 cells and examine the underlying mechanisms. The cell viability was determined, and caspase-3 was used to assess the effects of GLP-1 on cholesterol-induced apoptosis...
October 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29032011/sitagliptin-enhances-the-neuroprotective-effect-of-pregabalin-against-pentylenetetrazole-induced-acute-epileptogenesis-in-mice-implication-of-oxidative-inflammatory-apoptotic-and-autophagy-pathways
#19
Manar A Nader, Hayam Ateyya, Mohamed El-Shafey, Nagla A El-Sherbeeny
The current investigation aimed at studying the anti-epileptogenic effect of sitagliptin. The possible effect of the drug in combination with pregabalin in pentylenetetrazole (PTZ)- induced seizures was studied. In addition, the postulated mechanisms that could mediate such effect were explored namely, suppression of oxidative stress and neuro-inflammatory markers, autophagy and apoptosis. Seven days prior to PTZ (60 mg/kg, sc) injection, mice were treated with sitagliptin (5, 15, and 60 mg/kg, twice daily, orally) or pregabalin (30 mg/kg, once daily, orally) or their combination...
October 11, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/29031770/effects-of-three-major-amino-acids-found-in-japanese-broth-on-glucose-metabolism-and-gastric-emptying
#20
Fumika Mano, Kaori Ikeda, Erina Joo, Shunsuke Yamane, Norio Harada, Nobuya Inagaki
OBJECTIVES: To our knowledge, the effect of the broth of dried kelp and dried bonito, dashi, on glucose metabolism and digestion has rarely been studied. Based on the component analysis of three actual broths served in traditional restaurants, a chemically synthesized broth with three free amino acids (histidine, glutamate, aspartate) and salt was prepared to investigate their effect on glucose metabolism, glucose-dependent insulinotropic polypeptide (GIP), and glucagon-like peptide 1 (GLP-1) secretion, and digestion...
August 10, 2017: Nutrition
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