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Adrenergic receptor inflammation

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https://www.readbyqxmd.com/read/29095817/a-regulatory-role-for-%C3%AE-adrenergic-receptors-regarding-the-resolvin-d1-rvd1-pathway-in-the-diabetic-retina
#1
Haoshen Shi, Thomas W Carion, Youde Jiang, Adam Chahine, Jena J Steinle, Elizabeth A Berger
Diabetic retinopathy is a visually debilitating disease with limited treatment options available. Compound 49b, a β-adrenergic receptor agonist, has been demonstrated to effectively reduce disease pathogenesis associated with diabetic retinopathy. While the exact mechanisms are not fully understood, previous studies have determined that it reduces the pro-inflammatory cytokine, TNF-α, and inhibits apoptosis of the retinal microvasculture. As inflammation becomes more recognized in driving disease pathogenesis, so does the regulation by pro-resolving pathways as therapeutic points of intervention...
2017: PloS One
https://www.readbyqxmd.com/read/29064809/-parathormone-and-vitamin-d-in-heart-failure-theoretical-influence-on-disease-development-and-potential-therapy-targets
#2
Agnieszka Kolaszko, Grzegorz Kubiak, Ewa Nowalany-Kozielska
Vitamin D and parathormone (PTH) are hormones regulating calcium and phosphorus homeostasis. The aim of the article is to summarize the current knowledge in the field and to assess its impact on heart failure (HF) pathogenesis. PTH serum concentration being frequently elevated in patients with HF has negative impact on circulatory system stimulating myocardial fibrosis, wall thickening and reninangiotensin-aldosterone system (RAAS) activity. PTH reacts with smooth muscle cells receptors mediating adrenergic and chronotropic activation resulting in increased oxidative stress, endothelial dysfunction, intracellular calcium overload and has negative influence on prognosis in chronic HF patients...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29031719/macrophage-alternative-activation-confers-protection-against-lipotoxicity-induced-cell-death
#3
Lingling Dai, Prerna Bhargava, Kristopher J Stanya, Ryan K Alexander, Yae-Huei Liou, David Jacobi, Nelson H Knudsen, Alexander Hyde, Matthew R Gangl, Sihao Liu, Chih-Hao Lee
OBJECTIVE: Alternative activation (M2) of adipose tissue resident macrophage (ATM) inhibits obesity-induced metabolic inflammation. The underlying mechanisms remain unclear. Recent studies have shown that dysregulated lipid homeostasis caused by increased lipolysis in white adipose tissue (WAT) in the obese state is a trigger of inflammatory responses. We investigated the role of M2 macrophages in lipotoxicity-induced inflammation. METHODS: We used microarray experiments to profile macrophage gene expression regulated by two M2 inducers, interleukin-4 (Il-4), and peroxisome proliferator-activated receptor delta/gamma (Pparδ/Pparγ) agonists...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29031716/adipocyte-glucocorticoid-receptor-is-important-in-lipolysis-and-insulin-resistance-due-to-exogenous-steroids-but-not-insulin-resistance-caused-by-high-fat-feeding
#4
Yachen Shen, Hyun Cheol Roh, Manju Kumari, Evan D Rosen
OBJECTIVE: The critical role of adipose tissue in energy and nutrient homeostasis is influenced by many external factors, including overnutrition, inflammation, and exogenous hormones. Prior studies have suggested that glucocorticoids (GCs) in particular are major drivers of physiological and pathophysiological changes in adipocytes. In order to determine whether these effects directly require the glucocorticoid receptor (GR) within adipocytes, we generated adipocyte-specific GR knockout (AGRKO) mice...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29030006/dexmedetomidine-mitigate-acute-lung-injury-by-inhibiting-il-17-induced-inflammatory-reaction
#5
Yong Zhang, Shushan Jia, Tianqin Gao, Ruyi Zhang, Zhaoguo Liu, Yaoqi Wang
Interleukin-17 (IL-17) is considered to play an important role in the pathogenesis of a number of inflammatory conditions. Previous studies demonstrated that intranasal injections of IL-17 resulted in pulmonary inflammation and lung damage, we therefore hypothesize that dexmedetomidine, a potent α2 adrenergic receptor agonist that shows anti-inflammation effects in several animal models of inflammation, would attenuate IL-17 induced lung injury. We examined the lung damage using a histological approach, and assessed the number of lung-infiltrating neutrophils in the bronchoalveolar lavage fluid...
January 2018: Immunobiology
https://www.readbyqxmd.com/read/28974974/effects-of-salbutamol-on-the-inflammatory-parameters-and-angiogenesis-in-the-rat-air-pouch-model-of-inflammation
#6
Tahereh Eteraf-Oskouei, Arezu Akbarzadeh-Atashkhosrow, Milad Maghsudi, Moslem Najafi
In the present study, effects of salbutamol on the inflammatory parameters, angiogenesis, interleukin-1 beta (IL-1β) and vascular endothelial growth factor (VEGF) levels were investigated in an air pouch model of inflammation. Inflammation was induced by intrapouch administration of 1% solution of sterile carrageenan in male Wistar rats. Salbutamol (125, 250 and 500 µg/rat) and salbutamol (500 µg/rat) plus propranolol (100 μg/rat) were injected intrapouch. After 6 and 72 h, fluid inside the pouches was collected to measure volume of exudates, leukocytes number and IL-1β levels...
October 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28971642/increased-cd11b-cells-and-interleukin-1-il-1-alpha-levels-during-cardiomyopathy-induced-by-chronic-adrenergic-activation
#7
Jeremy Ben-Shoshan, Ayman Jubran, Ran Levy, Gad Keren, Michal Entin-Meer
BACKGROUND: Systemic CD11b+ cells have been associated with several cardiac diseases, such as chronic heart failure. OBJECTIVES: To assess the levels of circulating CD11b+ cells and pro-inflammatory cytokines in cardiomyopathy induced by chronic adrenergic stimulation. METHODS: Male Lewis rats were injected with low doses of isoproterenol (isoprel) for 3 months. Cardiac parameters were tested by echocardiography. The percentage of CD11b+ cells was tested by flow cytometry...
September 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28877454/a-stat6-pten-axis-links-regulatory-t-cells-with-adipose-tissue-function
#8
Stefanie Kälin, Maike Becker, Verena B Ott, Isabelle Serr, Fabian Hosp, Mohammad M H Mollah, Susanne Keipert, Daniel Lamp, Francoise Rohner-Jeanrenaud, Victoria K Flynn, Martin G Scherm, Lucas F R Nascimento, Katharina Gerlach, Vanessa Popp, Sarah Dietzen, Tobias Bopp, Purna Krishnamurthy, Mark H Kaplan, Manuel Serrano, Stephen C Woods, Philipp Tripal, Ralf Palmisano, Martin Jastroch, Matthias Blüher, Christian Wolfrum, Benno Weigmann, Anette-Gabriele Ziegler, Matthias Mann, Matthias H Tschöp, Carolin Daniel
Obesity and type 2 diabetes are associated with metabolic defects and adipose tissue inflammation. Foxp3(+) regulatory T cells (Tregs) control tissue homeostasis by counteracting local inflammation. However, if and how T cells interlink environmental influences with adipocyte function remains unknown. Here, we report that enhancing sympathetic tone by cold exposure, beta3-adrenergic receptor (ADRB3) stimulation or a short-term high-calorie diet enhances Treg induction in vitro and in vivo. CD4(+) T cell proteomes revealed higher expression of Foxp3 regulatory networks in response to cold or ADRB3 stimulation in vivo reflecting Treg induction...
September 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28874462/%C3%AE-arrestin2-improves-post-myocardial-infarction-heart-failure-via-sarco-endo-plasmic-reticulum-ca-2-atpase-dependent-positive-inotropy-in-cardiomyocytes
#9
Katie A McCrink, Jennifer Maning, Angela Vu, Malika Jafferjee, Christine Marrero, Ava Brill, Ashley Bathgate-Siryk, Samalia Dabul, Walter J Koch, Anastasios Lymperopoulos
Heart failure is the leading cause of death in the Western world, and new and innovative treatments are needed. The GPCR (G protein-coupled receptor) adapter proteins βarr (β-arrestin)-1 and βarr-2 are functionally distinct in the heart. βarr1 is cardiotoxic, decreasing contractility by opposing β1AR (adrenergic receptor) signaling and promoting apoptosis/inflammation post-myocardial infarction (MI). Conversely, βarr2 inhibits apoptosis/inflammation post-MI but its effects on cardiac function are not well understood...
November 2017: Hypertension
https://www.readbyqxmd.com/read/28838539/mirna-deregulation-in-cardiac-aging-and-associated-disorders
#10
Robin Verjans, Marc van Bilsen, Blanche Schroen
The prevalence of age-related diseases is increasing dramatically, among which cardiac disease represents the leading cause of death. Aging of the heart is characterized by various molecular and cellular hallmarks impairing both cardiomyocytes and noncardiomyocytes, and resulting in functional deteriorations of the cardiac system. The aging process includes desensitization of β-adrenergic receptor (βAR)-signaling and decreased calcium handling, altered growth signaling and cardiac hypertrophy, mitochondrial dysfunction and impaired autophagy, increased programmed cell death, low-grade inflammation of noncanonical inflammatory cells, and increased ECM deposition...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28753658/neuroanatomy-of-the-spleen-mapping-the-relationship-between-sympathetic-neurons-and-lymphocytes
#11
Kaitlin Murray, Dayn Romero Godinez, Ingrid Brust-Mascher, Elaine Nicole Miller, Melanie G Gareau, Colin Reardon
The nervous system plays a profound regulatory role in maintaining appropriate immune responses by signaling to immune cells. These immune cells, including B- and T-cells, can further act as intermediary messengers, with subsets of B- and T-cells expressing choline acetyltransferase (ChAT), the enzyme required for acetylcholine (ACh) synthesis. Neural control of ACh release from ChAT+ T-cells can have powerful immune implications, regulating lymphocyte trafficking, inflammation, and prevent death due to experimental septic shock...
2017: PloS One
https://www.readbyqxmd.com/read/28740379/peg-coated-gold-nanoparticles-attenuate-%C3%AE-adrenergic-receptor-mediated-cardiac-hypertrophy
#12
Yuhui Qiao, Baoling Zhu, Aiju Tian, Zijian Li
Gold nanoparticles (AuNPs) are widely used as a drug delivery vehicle, which can accumulate in the heart through blood circulation. Therefore, it is very important to understand the effect of AuNPs on the heart, especially under pathological conditions. In this study, we found that PEG-coated AuNPs attenuate β-adrenergic receptor (β-AR)-mediated acute cardiac hypertrophy and inflammation. However, both isoproterenol, a non-selective β-AR agonist, and AuNPs did not induce cardiac function change or cardiac fibrosis...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28724493/oral-transmucosal-detomidine-gel-in-new-zealand-white-rabbits-oryctolagus-cuniculus
#13
Morika D Williams, C Tyler Long, Jessica R Durrant, Gabriel P McKeon, Heather R Shive, Emily H Griffith, Kristen M Messenger, Richard E Fish
Handling and restraining rabbits for routine procedures may be impossible without prior sedation, result in unnecessary stress or injury to the rabbit or handler, and increase experimental variability. Parenteral administration of sedatives can cause stress also, as well as localized pain and tissue damage, especially in fractious animals. Detomidine hydrochloride, an α2-adrenergic receptor agonist, is commercially available in an oral transmucosal (OTM) gel formulation that is FDA-approved for sedation and restraint in horses...
July 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28687335/a-genome-wide-transcriptomic-analysis-of-articular-cartilage-during-normal-maturation-in-pigs
#14
Naga Suresh Adapala, Harry K W Kim
OBJECTIVE: The articular cartilage undergoes dramatic changes in structure and composition during post-natal maturation, but the associated transcriptional changes are not well characterized. Compared to a mature stage, the immature articular cartilage shows developmental features such as increased thickness, presence of blood vessels, and the presence of a deep layer of growth cartilage which undergoes endochondral ossification. These features decrease during normal development. Following maturation, the articular cartilage is known to undergo few minor modifications...
September 5, 2017: Gene
https://www.readbyqxmd.com/read/28646990/%C3%AE-2-adrenergic-receptors-in-inflammation-and-vascular-complications-of-diabetes
#15
Daniel L Galvan, Farhad R Danesh
The cross talk between the immune and nervous systems is critical not only for maintaining normal homeostasis but also for the progression of a variety of inflammatory diseases. Macrophage activation and β2-adrenergic receptors are known to play important roles in facilitating this communication between these 2 systems. Using an integrated in vitro and in vivo study, Noh et al. reveal that β2-adrenergic receptor agonists exhibit protective effects against the vascular complications of diabetes. The protective effects of β2-adrenergic receptor agonists seem to be dependent on a β-arrestin2/inhibitor of kappa B/nuclear factor-κB signaling pathway...
July 2017: Kidney International
https://www.readbyqxmd.com/read/28624610/anti-fc%C3%AE-riib-monoclonal-antibody-suppresses-murine-igg-dependent-anaphylaxis-by-fc-domain-targeting-of-fc%C3%AE-riii
#16
Corey D Clay, Richard T Strait, Ashley Mahler, Marat V Khodoun, Fred D Finkelman
BACKGROUND: The inhibitory receptor, FcγRIIB, is expressed on human and murine bone marrow-derived cells and limits inflammation by suppressing signaling through stimulatory receptors. OBJECTIVE: Evaluate the effects of K9.361, a mouse IgG2a alloantibody to mouse FcγRIIB, on murine anaphylaxis. METHODS: Wild-type and FcγR-deficient mice were used to study anaphylaxis, which was induced by injection of 2.4G2 (rat IgG2b mAb that binds both FcγRIIB and the stimulatory receptor, FcγRIII); by actively immunizing IgE-deficient mice, then challenging with the immunizing Ag; and by passive immunization with IgG or IgE anti-TNP mAb, followed by injection of TNP-ovalbumin...
June 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28621257/oral-transmucosal-detomidine-gel-in-new-zealand-white-rabbits-oryctolagus-cuniculus
#17
Morika D Williams, C Tyler Long, Jessica R Durrant, Gabriel P McKeon, Heather R Shive, Emily H Griffith, Kristen M Messenger, Richard E Fish
Handling and restraining rabbits for routine procedures may be impossible without prior sedation, result in unnecessarystress or injury to the rabbit or handler, and increase experimental variability. Parenteral administration of sedatives can cause stress also, as well as localized pain and tissue damage, especially in fractious animals. Detomidine hydrochloride, an α2-adrenergic receptor agonist, is commercially available in an oral transmucosal (OTM) gel formulation that is FDA-approved for sedation and restraint in horses...
June 15, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28555511/mitigation-of-inflammation-using-the-intravenous-anesthetic-dexmedetomidine-in-the-mouse-air-pouch-model
#18
Takefumi Inada, Chisato Sumi, Kiichi Hirota, Koh Shingu, Akihisa Okamoto, Yoshiyuki Matsuo, Takahiko Kamibayashi
Dexmedetomidine, an α2-adrenergic/imidazoline receptor agonist, is a widely used intravenous anesthetic. Its primary current usage is for sedation of patients in the intensive care unit. The mouse air pouch model is versatile in studying the anti-inflammatory effect of a drug on a local inflammation, which is induced by a variety of substances. In the present study, using the carrageenan-induced air pouch inflammation model, we tested whether dexmedetomidine mitigates inflammation occurring locally in the mouse air pouch...
August 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28554511/induction-of-cardiac-dysfunction-in-developing-and-adult-zebrafish-by-chronic-isoproterenol-stimulation
#19
Mandy Kossack, Selina Hein, Lonny Juergensen, Mauro Siragusa, Alexander Benz, Hugo A Katus, Patrick Most, David Hassel
Zebrafish is a widely used model to evaluate genetic variants and modifiers that can cause heart muscle diseases. Surprisingly, the β-adrenergic receptor (β-AR) pathway in zebrafish is not well characterized, although abnormal β-AR signaling is a major contributor to human heart failure (HF). Chronic β-AR activation in the attempt to normalize heart function in the failing heart results in a reduction of the β-ARs expression and receptor desensitization, largely mediated through G-protein coupled receptor kinase 2 (GRK2) upregulation...
July 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28549109/il-18-cleavage-triggers-cardiac-inflammation-and-fibrosis-upon-%C3%AE-adrenergic-insult
#20
Han Xiao, Hao Li, Jing-Jing Wang, Jian-Shu Zhang, Jing Shen, Xiang-Bo An, Cong-Cong Zhang, Ji-Min Wu, Yao Song, Xin-Yu Wang, Hai-Yi Yu, Xiang-Ning Deng, Zi-Jian Li, Ming Xu, Zhi-Zhen Lu, Jie Du, Wei Gao, Ai-Hua Zhang, Yue Feng, You-Yi Zhang
Aims: Rapid over-activation of β-adrenergic receptor (β-AR) upon stress leads to cardiac inflammation, a prevailing factor that underlies heart injury. However, mechanisms by which acute β-AR stimulation induce cardiac inflammation still remain unknown. Here, we set out to identify the crucial role of inflammasome/interleukin (IL)-18 in initiating and maintaining cardiac inflammatory cascades upon β-AR insult. Methods and results: Male C57BL/6 mice were injected with a single dose of β-AR agonist, isoproterenol (ISO, 5 mg/kg body weight) or saline subcutaneously...
May 26, 2017: European Heart Journal
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