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beta2 adrenergic receptor

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https://www.readbyqxmd.com/read/28423616/suppression-of-microrna-16-protects-against-acute-myocardial-infarction-by-reversing-beta2-adrenergic-receptor-down-regulation-in-rats
#1
Jiaqi Liu, Fei Sun, Yuying Wang, Wanqi Yang, Hongwen Xiao, Yue Zhang, Renzhong Lu, Haixia Zhu, Yuting Zhuang, Zhenwei Pan, Zhiguo Wang, Zhimin Du, Yanjie Lu
microRNA-16 (miR-16) has been shown to be up-regulated in ischemic heart. Beta2-adrenoreceptor (β2-AR) exerts cardioprotective property in ischemic injury. This study aims to determine the effect of miR-16 in cardiac injury in rats and the possible involvement of β2-AR in this process. Acute myocardial infarction (AMI) model in rats was induced by ligation of left coronary artery. Neonatal rat ventricular cells (NRVCs) were cultured in vitro tests. The cardiomyocyte model of oxidative injury was mimicked by hydrogen peroxide...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28396116/beta-2-adrenergic-receptor-agonists-are-novel%C3%A2-regulators-of-macrophage-activation-in%C3%A2-diabetic-renal-and-cardiovascular-complications
#2
Hyunjin Noh, Mi Ra Yu, Hyun Joo Kim, Ji Hye Lee, Byoung-Won Park, I-Hsien Wu, Motonobu Matsumoto, George L King
Macrophage activation is increased in diabetes and correlated with the onset and progression of vascular complications. To identify drugs that could inhibit macrophage activation, we developed a cell-based assay and screened a 1,040 compound library for anti-inflammatory effects. Beta2-adrenergic receptor (β2AR) agonists were identified as the most potent inhibitors of phorbol myristate acetate-induced tumor necrosis factor-α production in rat bone marrow macrophages. In peripheral blood mononuclear cells isolated from streptozotocin-induced diabetic rats, β2AR agonists inhibited diabetes-induced tumor necrosis factor-α production, which was prevented by co-treatment with a selective β2AR blocker...
July 2017: Kidney International
https://www.readbyqxmd.com/read/28327457/beta2-adrenergic-receptor-gene-haplotypes-and-bronchodilator-response-in-egyptian-patients-with-chronic-obstructive-pulmonary-disease
#3
Mohammad H Hussein, Khaled E Sobhy, Irene M Sabry, Ahmed T El Serafi, Eman A Toraih
PURPOSE: Chronic obstructive pulmonary disease (COPD) is a multi-factorial disorder caused by environmental determinants and genetic risk factors. Understanding the genetic predisposition of COPD is essential to develop personalized treatment regimens. Beta2-adrenergic receptor (ADRB2) gene polymorphisms have been implicated in the pathogenesis of obstructive pulmonary diseases. This study was conducted to assess the genetic association between Arg16Gly and Gln27Glu polymorphisms and COPD in the Egyptian patients, and to analyze their impact on the clinical outcome and therapeutic response...
March 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28198454/preliminary-evidence-for-a-role-of-the-adrenergic-nervous-system-in-generalized-anxiety-disorder
#4
Xiaobin Zhang, Joanna Norton, Isabelle Carrière, Karen Ritchie, Isabelle Chaudieu, Joanne Ryan, Marie-Laure Ancelin
Generalized anxiety disorder (GAD) is a common chronic condition that is understudied compared to other psychiatric disorders. An altered adrenergic function has been reported in GAD, however direct evidence for genetic susceptibility is missing. This study evaluated the associations of gene variants in adrenergic receptors (ADRs) with GAD, with the involvement of stressful events. Data were obtained from 844 French community-dwelling elderly aged 65 or over. Anxiety disorders were assessed using the Mini-International Neuropsychiatry Interview, according to DSM-IV criteria...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28162517/-283-beta2-adrenergic-receptor-gene-polymorphisms-and-haplotypes-associate-with-chronic-pain-in-sickle-cell-disease
#5
E Jhun, Y He, Y Yao, D Wilkie, R Molokie, J Wang
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28099883/beta2-adrenergic-signaling-affects-the-phenotype-of-human-cardiac-progenitor-cells-through-emt-modulation
#6
Francesca Pagano, Francesco Angelini, Camilla Siciliano, Julia Tasciotti, Giorgio Mangino, Elena De Falco, Roberto Carnevale, Sebastiano Sciarretta, Giacomo Frati, Isotta Chimenti
Human cardiac progenitor cells (CPCs) offer great promises to cardiac cell therapy for heart failure. Many in vivo studies have shown their therapeutic benefits, paving the way for clinical translation. The 3D model of cardiospheres (CSs) represents a unique niche-like in vitro microenvironment, which includes CPCs and supporting cells. CSs have been shown to form through a process mediated by epithelial-to-mesenchymal transition (EMT). β2-Adrenergic signaling significantly affects stem/progenitor cells activation and mobilization in multiple tissues, and crosstalk between β2-adrenergic signaling and EMT processes has been reported...
January 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27993566/beta2-adrenergic-receptor-homodimers-role-of-transmembrane-domain-1-and-helix-8-in-dimerization-and-cell-surface-expression
#7
Vikas K Parmar, Ellinor Grinde, Joseph E Mazurkiewicz, Katharine Herrick-Davis
Even though there are hundreds of reports in the published literature supporting the hypothesis that G protein-coupled receptors (GPCR) form and function as dimers this remains a highly controversial area of research and mechanisms governing homodimer formation are poorly understood. Crystal structures revealing homodimers have been reported for many different GPCR. For adrenergic receptors, a potential dimer interface involving transmembrane domain 1 (TMD1) and helix 8 (H8) was identified in crystal structures of the beta1-adrenergic (β1-AR) and β2-AR...
September 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27506674/differential-expression-of-skeletal-muscle-genes-following-administration-of-clenbuterol-to-exercised-horses
#8
Heather K Knych, Linda M Harrison, Stacy J Steinmetz, Nadira Chouicha, Phil H Kass
BACKGROUND: Clenbuterol, a beta2-adrenergic receptor agonist, is used therapeutically to treat respiratory conditions in the horse. However, by virtue of its mechanism of action it has been suggested that clenbuterol may also have repartitioning affects in horses and as such the potential to affect performance. Clenbuterol decreases the percent fat and increases fat-free mass following high dose administration in combination with intense exercise in horses. In the current study, microarray analysis and real-time PCR were used to study the temporal effects of low and high dose chronic clenbuterol administration on differential gene expression of several skeletal muscle myosin heavy chains, genes involved in lipid metabolism and the β2-adrenergic receptor...
2016: BMC Genomics
https://www.readbyqxmd.com/read/27437032/visceral-adiposity-syndrome
#9
REVIEW
Heno F Lopes, Maria Lúcia Corrêa-Giannella, Fernanda M Consolim-Colombo, Brent M Egan
The association of anthropometric (waist circumference) and hemodynamic (blood pressure) changes with abnormalities in glucose and lipid metabolism has been motivation for a lot of discussions in the last 30 years. Nowadays, blood pressure, body mass index/abdominal circumference, glycemia, triglyceridemia, and HDL-cholesterol concentrations are considered in the definition of Metabolic syndrome, referred as Visceral adiposity syndrome (VAS) in the present review. However, more than 250 years ago an association between visceral and mediastinal obesity with hypertension, gout, and obstructive apnea had already been recognized...
2016: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/27255554/prognostic-significance-of-synergistic-hexokinase-2-and-beta2-adrenergic-receptor-expression-in-human-hepatocelluar-carcinoma-after-curative-resection
#10
Zhi-Feng Zhang, Xiao-Sha Feng, He Chen, Zhi-Jun Duan, Li-Xia Wang, Dong Yang, Pi-Xu Liu, Qiu-Ping Zhang, Yan-Ling Jin, Zhi-Gang Sun, Han Liu
BACKGROUND: Hexokinase-2 (HK2) and Beta2-adrenergic receptor (Beta2AR) are overexpressed in hepatocellular carcinoma (HCC) tissues and associated with poor prognosis. However, the synergistic effect of HK2 and Beta2AR in HCC prognosis is not elucidated. The present study aims to investigate the association between HK2 and Beta2AR expressions in HCC tissues, and to evaluate the synergistic effect of HK2 and Beta2AR in HCC prognosis. METHODS: Immunohistochemistry of HK2 and Beta2AR was performed on 155 paraffin embedded HCC samples retrieved from the archives of pathology department...
June 3, 2016: BMC Gastroenterology
https://www.readbyqxmd.com/read/27245339/formoterol-decreases-muscle-wasting-as-well-as-inflammation-in-the-rat-model-of-rheumatoid-arthritis
#11
Ana Belén Gómez-SanMiguel, Carolina Gomez-Moreira, María Paz Nieto-Bona, Carmen Fernández-Galaz, Maria Ángeles Villanúa, Ana Isabel Martín, Asunción López-Calderón
Adjuvant-induced arthritis is an experimental model of rheumatoid arthritis that is associated with body weight loss and muscle wasting. β2-adrenergic receptor agonists are powerful anabolic agents that trigger skeletal muscle hypertrophy and have been proposed as a promising treatment for muscle wasting in human patients. The aim of this work was to determine whether formoterol, a selective β2-adrenoreceptor agonist, is able to ameliorate muscle wasting in arthritic rats. Arthritis was induced in male Wistar rats by intradermal injection of Freund's adjuvant...
June 1, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27046942/maximum-time-of-the-effect-of-antileukotriene-zileuton-in-treatment-of-patients-with-bronchial-asthma
#12
Naim Morina, Gëzim Boçari, Ali Iljazi, Kadir Hyseini, Gunay Halac
OBJECTIVE: Maximum time of the effect of antileukotriene substances - Zileuton in the treatment of patients with bronchial asthma and increased bronchial reactivity and of the salbutamol as agonist of the beta2 adrenergic receptor studied in this work. METHODS: Parameters of the lung function are determined with Body plethysmography. Raw and ITGV were registered and specific resistance (SRaw) was calculated. Zileuton (Zyflo, tbl. 600 mg), producer Cornerstone Therapeutics, USA was used in the research...
February 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/26746354/higenamine-protects-ischemia-reperfusion-induced-cardiac-injury-and-myocyte-apoptosis-through-activation-of-%C3%AE-2-ar-pi3k-akt-signaling-pathway
#13
Mei-ping Wu, Yi-shuai Zhang, Qian-mei Zhou, Jian Xiong, Yao-rong Dong, Chen Yan
Cardiomyocyte apoptosis contributes to ischemic cardiac injury and the development of heart failure. Higenamine is a key component of the Chinese herb aconite root that has been prescribed for treating symptoms of heart failure for thousands of years in the oriental Asian countries. It has been shown that higenamine has anti-apoptotic effects in a few cell types including cardiomyocytes. However, the pharmacological target and molecular mechanism of higenamine in the heart are still not fully illustrated. Herein, we report that higenamine protected myocyte apoptosis and ischemia/reperfusion (I/R) injury through selective activation of beta2-adrenergic receptor (β2-AR)...
February 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/26543414/impact-of-the-tamsulosin-in-alpha-adrenergic-receptor-of-airways-at-patients-with-increased-bronchial-reactibility
#14
Lirim Mustafa, Ali Ilazi, Arta Dauti, Pellumb Islami, Bashkim Kastrati, Hilmi Islami
OBJECTIVE: In this work, effect of tamsulosin as antagonist of alpha1A and alpha1B adrenergic receptor and effect of agonists of beta2 adrenergic receptor-salbutamol in patients with increased bronchial reactibility was studied. METHODS: Parameters of the lung function are determined with Body plethysmography six (6) hours after administration of tamsulosin. Raw and ITGV were registered and specific resistance (SRaw) was calculated as well. Tamsulosin was administered in per os manner as a preparation in the shape of the capsules with a brand name of "Prolosin", produced by Niche Generics Limited, Hitchin, Herts...
August 2015: Materia Socio-medica
https://www.readbyqxmd.com/read/26524508/%C3%AE-2-agonist-clenbuterol-hinders-human-monocyte-differentiation-into-dendritic-cells
#15
Luciana Giordani, Noemi Cuzziol, Tamara Del Pinto, Massimo Sanchez, Sonia Maccari, Alessia Massimi, Donatella Pietraforte, Marina Viora
Clenbuterol (CLB) is a beta2-adrenergic agonist commonly used in asthma therapy, but is also a non-steroidal anabolic drug often abused in sport doping practices. Here we evaluated the in vitro impact of CLB on the physiology and function of human monocytes and dendritic cells (DCs), instrumental in the development of immune responses. We demonstrate that CLB inhibits the differentiation of monocytes into DCs and this effect is specific and dependent on β2-adrenergic receptor (AR) activation. We found that CLB treatment reduced the percentage of CD1a(+) immature DCs, while increasing the frequency of monocytes retaining CD14 surface expression...
December 10, 2015: Experimental Cell Research
https://www.readbyqxmd.com/read/26254103/beta2-adrenergic-activity-modulates-vascular-tone-regulation-in-lecithin-cholesterol-acyltransferase-knockout-mice
#16
S Manzini, C Pinna, M Busnelli, P Cinquanta, E Rigamonti, G S Ganzetti, F Dellera, A Sala, L Calabresi, G Franceschini, C Parolini, G Chiesa
Lecithin:cholesterol acyltransferase (LCAT) deficiency is associated with hypoalphalipoproteinemia, generally a predisposing factor for premature coronary heart disease. The evidence of accelerated atherosclerosis in LCAT-deficient subjects is however controversial. In this study, the effect of LCAT deficiency on vascular tone and endothelial function was investigated in LCAT knockout mice, which reproduce the human lipoprotein phenotype. Aortas from wild-type (Lcat(wt)) and LCAT knockout (Lcat(KO)) mice exposed to noradrenaline showed reduced contractility in Lcat(KO) mice (P<0...
November 2015: Vascular Pharmacology
https://www.readbyqxmd.com/read/26146998/a-common-polymorphism-of-the-human-cardiac-sodium-channel-alpha-subunit-scn5a-gene-is-associated-with-sudden-cardiac-death-in-chronic-ischemic-heart-disease
#17
Boglárka Marcsa, Réka Dénes, Krisztina Vörös, Gergely Rácz, Mária Sasvári-Székely, Zsolt Rónai, Klára Törő, Gergely Keszler
Cardiac death remains one of the leading causes of mortality worldwide. Recent research has shed light on pathophysiological mechanisms underlying cardiac death, and several genetic variants in novel candidate genes have been identified as risk factors. However, the vast majority of studies performed so far investigated genetic associations with specific forms of cardiac death only (sudden, arrhythmogenic, ischemic etc.). The aim of the present investigation was to find a genetic marker that can be used as a general, powerful predictor of cardiac death risk...
2015: PloS One
https://www.readbyqxmd.com/read/25997166/stopping-long-acting-beta2-agonists-laba-for-children-with-asthma-well-controlled-on-laba-and-inhaled-corticosteroids
#18
REVIEW
Kayleigh M Kew, Sean Beggs, Shaleen Ahmad
BACKGROUND: Asthma is the most common chronic medical condition among children and is one of the most common causes of hospitalisation and medical visits. Poorly controlled asthma often leads to preventable exacerbations that require additional medications, hospital stays, or treatment in the emergency department.Long-acting beta2-agonists (LABA) are the preferred add-on treatment for children with asthma whose symptoms are not well controlled on inhaled corticosteroids (ICS). The US Food and Drug Administration has issued a 'black box' warning for LABA in asthma, and now recommends that they be used "for the shortest duration of time required to achieve control of asthma symptoms and discontinued, if possible, once asthma control is achieved"...
2015: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/25912320/an-in-vivo-mouse-model-of-primary-dysmenorrhea
#19
Lu Yang, Zhengyu Cao, Boyang Yu, Chengzhi Chai
Primary dysmenorrhea (PD) is a common gynecological disorder. Hitherto, animal models which recapitulate clinical features of PD have not been fully established. We aimed to examine whether a pain model in mice could mimic the clinic features of PD. After pretreated with estradiol benzoate (1 mg/kg/day) intraperitoneally (i.p.) for 3 consecutive days, non-pregnant female Imprinting Control Region mice (6-8 weeks old) was injected with 0.4 U of oxytocin to induce the stretching or writhing response which was recorded for a time period of 30 min...
2015: Experimental Animals
https://www.readbyqxmd.com/read/25893811/environmental-factors-and-beta2-adrenergic-receptor-polymorphism-influence-on-the-energy-expenditure-and-nutritional-status-of-obese-women
#20
Eliane Lopes Rosado, Josefina Bressan, J Alfredo Martínez
Our aim was to evaluate the influence of the Gln27Glu polymorphism of the β2-adrenergic receptor (ADRβ2) gene, fat intake and physical activity on the energy expenditure (EE) and nutritional status of obese women. Sixty obese women (30-46 years) participated in the study and were assigned to three groups depending on the genotypes: Gln27Gln, Gln27Glu and Glu27Glu. At baseline and after nutritional intervention, the anthropometric and body composition (bioelectrical impedance), dietary, EE (indirect calorimetry) and biochemical variables were measured...
May 2015: Lipids
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