نتایج جستجو برای: β agonist

تعداد نتایج: 224525  

2016
Masayoshi Yamaguchi Robert M. Levy

Osteoporosis is induced by the reduction in bone mass through decreased osteoblastic osteogenesis and increased osteoclastic bone resorption, and it is associated with obesity and diabetes. Osteoblasts and adipocytes are derived from bone marrow mesenchymal stem cells. The prevention of osteoporosis is an important public health concern in aging populations. β-caryophyllene, a component of vari...

2015
Lauren A. Cole Jonathan H. Dennis P. Bryant Chase

β-adrenergic signaling pathways mediate key aspects of cardiac function. Its dysregulation is associated with a range of cardiac diseases, including dilated cardiomyopathy (DCM). Previously, we established an iPSC model of familial DCM from patients with a mutation in TNNT2, a sarcomeric protein. Here, we found that the β-adrenergic agonist isoproterenol induced mature β-adrenergic signaling in...

Journal: :acta medica iranica 0
ahmadiasl n mohammadi naghadeh m rostami a

we investigated the vasodilatory effect of isoprenaline at large vessels (aorta, renal ans saphenous arteries, vena cava, renal and saphenous veins) in doxorbicin-induced model of heart failure. thirty saline-treated (normal group) and thirty doxorubicin treated rabbits (1 mg/kg administered intravenously twice weekly for 8 weeks) were studied after 16 weeks of treatment. chronic heart failure ...

Journal: :Frontiers in Cell and Developmental Biology 2021

T2DM (Type 2 diabetes) is a complex, chronic disease characterized as insulin resistance and islet β-cell dysfunction. Bariatric surgeries such Roux-en-Y gastric bypass (RYGB) surgery laparoscopic sleeve gastrectomy (LSG) have become part of critical treatment regimen in the obesity T2DM. Moreover, GLP-1 increase following bariatric has been regarded significant event surgery-induced remission ...

Journal: :American journal of physiology. Heart and circulatory physiology 2010
P Charukeshi Chandrasekera Victoria J McIntosh Frank X Cao Robert D Lasley

The mammalian myocardium expresses four adenosine receptor (AR) subtypes: A(1)AR, A(2a)AR, A(2b)AR, and A(3)AR. The A(1)AR is well known for its profound antiadrenergic effects, but the roles of other AR subtypes in modulating contractility remain inconclusive. Thus, the objective of this study was to determine the direct and indirect effects of A(2a)AR and A(2b)AR on cardiac contractility. Exp...

2013
Jillian G. Baker Richard G. W. Proudman Stephen J. Hill

β-blockers are widely used to improve symptoms and prolong life in heart disease primarily by inhibiting the actions of endogenous catecholamines at the β1-adrenoceptor. There are two common naturally occurring polymorphisms within the human β1-adrenoceptor sequence: Ser or Gly at position 49 in the N-terminus and Gly or Arg at position 389 in the C-terminus and some clinical studies have sugge...

Journal: :BJA: British Journal of Anaesthesia 2021

BackgroundImmunosuppression after surgery is associated with postoperative complications, mediated in part by catecholamines that exert anti-inflammatory effects via the β-adrenergic receptor. Phenylephrine, generally regarded as a selective α-adrenergic agonist, frequently used to treat perioperative hypotension. However, phenylephrine may impair host defence through affinity.MethodsHuman leuk...

Journal: :Journal of medicinal chemistry 2015
Huy N Hoang Kun Song Timothy A Hill David R Derksen David J Edmonds W Mei Kok Chris Limberakis Spiros Liras Paula M Loria Vincent Mascitti Alan M Mathiowetz Justin M Mitchell David W Piotrowski David A Price Robert V Stanton Jacky Y Suen Jane M Withka David A Griffith David P Fairlie

Cyclic constraints are incorporated into an 11-residue analogue of the N-terminus of glucagon-like peptide-1 (GLP-1) to investigate effects of structure on agonist activity. Cyclization through linking side chains of residues 2 and 5 or 5 and 9 produced agonists at nM concentrations in a cAMP assay. 2D NMR and CD spectra revealed an N-terminal β-turn and a C-terminal helix that differentially i...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Huiyuan Zheng Hongchang Shen Iulian Oprea Claire Worrall Radu Stefanescu Ada Girnita Leonard Girnita

Owing to its essential role in cancer, insulin-like growth factor type 1 receptor (IGF-1R)-targeted therapy is an exciting approach for cancer treatment. However, when translated into clinical trials, IGF-1R-specific antibodies did not fulfill expectations. Despite promising clinical responses in Ewing's sarcoma (ES) phase I/II trials, phase III trials were discouraging, requiring bedside-to-be...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2015
Alisa M Agné Jan-Peter Baldin Audra R Benjamin Maria C Orogo-Wenn Lukas Wichmann Kenneth R Olson Dafydd V Walters Mike Althaus

In pulmonary epithelia, β-adrenergic agonists regulate the membrane abundance of the epithelial sodium channel (ENaC) and, thereby, control the rate of transepithelial electrolyte absorption. This is a crucial regulatory mechanism for lung liquid clearance at birth and thereafter. This study investigated the influence of the gaseous signaling molecule hydrogen sulfide (H2S) on β-adrenergic agon...

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