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Vascular pharmacology

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https://www.readbyqxmd.com/read/29161465/neuromuscular-electrical-stimulation-for-the-prevention-of-venous-thromboembolism
#1
REVIEW
Shahab Hajibandeh, Shahin Hajibandeh, George A Antoniou, James Rh Scurr, Francesco Torella
BACKGROUND: Venous thromboembolism (VTE) is a serious but preventable cause of morbidity and mortality. Neuromuscular electrical stimulation systems (NMES) for the prevention of VTE may be beneficial for patients in whom pharmacological or standard mechanical prophylaxis methods are contraindicated or are regarded as unsafe or impractical. Although findings of experimental studies suggest that NMES reduce venous stasis, the clinical utility and effectiveness of NMES in VTE prevention remain controversial...
November 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29160087/glyoxalase-1-modulation-in-obesity-and-diabetes
#2
Naila Rabbani, Paul J Thornalley
SIGNIFICANCE: Obesity and type 2 diabetes mellitus are increasing globally. There is also increasing associated complications, such as non-alcoholic fatty liver disease (NAFLD) and vascular complications of diabetes. There is currently no licensed treatment for NAFLD and no recent treatments for diabetic complications. New approaches are required, particularly addressing mechanism-based risk factors for health decline and disease progression. Recent advances: Dicarbonyl stress is the abnormal accumulation of reactive dicarbonyl metabolites such as methylglyoxal leading to cell and tissue dysfunction...
November 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29157947/vascular-endothelial-specific-il-4r%C3%AE-abl1-kinase-signaling-axis-regulates-severity-of-ige-mediated-anaphylactic-reactions
#3
Amnah Yamani, David Wu, Lisa Waggoner, Taeko Noah, Anthony J Koleske, Fred Finkelman, Simon P Hogan
BACKGROUND: Severe IgE-mediated, food-induced anaphylactic reactions are characterized by pulmonary venous vasodilatation and fluid extravasation, which is thought to lead to the life-threatening anaphylactic phenotype. The underlying immunological and cellular processes involved in driving fluid extravasation and the severe anaphylactic phenotype are not fully elucidated. OBJECTIVE: To define the interaction and requirement of IL-4 and vascular endothelial (VE) IL-4Rα chain signaling in histamine-ABL1-mediated VE dysfunction and fluid extravasation in the severity of IgE-mediated anaphylactic reactions in mice...
November 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29156823/differential-activation-of-fyn-kinase-distinguishes-saturated-and-unsaturated-fats-in-mouse-macrophages
#4
Elena Tarabra, Ting-Wen An Lee, Victor A Zammit, Manu Vatish, Eijiro Yamada, Jeffrey E Pessin, Claire C Bastie
Diet-induced obesity is associated with increased adipose tissue activated macrophages. Yet, how macrophages integrate fatty acid (FA) signals remains unclear. We previously demonstrated that Fyn deficiency (fynKO) protects against high fat diet-induced adipose tissue macrophage accumulation. Herein, we show that inflammatory markers and reactive oxygen species are not induced in fynKO bone marrow-derived macrophages exposed to the saturated FA palmitate, suggesting that Fyn regulates macrophage function in response to FA signals...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156097/4-aminopyridine-a-pan-kv-channel-inhibitor-that-enhances-kv7-4-currents-and-inhibits-noradrenaline-mediated-contraction-of-rat-mesenteric-small-arteries
#5
Makhala M Khammy, Sukhan Kim, Bo H Bentzen, Soojung Lee, Inyeoung Choi, Christian Aalkjaer, Thomas A Jepps
BACKGROUND AND PURPOSE: Kv7.4 and Kv7.5 channels are regulators of vascular tone. 4-aminopyridine (4-AP) is considered a broad inhibitor of voltage-gated potassium (KV ) channels, with little inhibitory effect on Kv7 family members at millimolar concentrations. However, the effect of 4-AP on Kv7 channels has not been systematically studied. The aim of this study was to investigate the pharmacological activity of 4-AP on Kv7.4 and Kv7.5 channels and characterise the effect of 4-AP on rat resistance arteries...
November 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29155760/echocardiographic-and-histological-examination-of-cardiac-morphology-in-the-mouse
#6
Delphine Baudouy, Jean-François Michiels, Ana Vukolic, Kay-Dietrich Wagner, Nicole Wagner
An increasing number of genetically modified mouse models has become available in recent years. Moreover, the number of pharmacological studies performed in mice is high. Phenotypic characterization of these mouse models also requires the examination of cardiac function and morphology. Echocardiography and magnetic resonance imaging (MRI) are commonly used approaches to characterize cardiac function and morphology in mice. Echocardiographic and MRI equipment specialized for use in small rodents is expensive and requires a dedicated space...
October 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29152859/deletion-of-the-egf-receptor-in-vascular-smooth-muscle-cells-prevents-chronic-angiotensin-ii-induced-arterial-wall-stiffening-and-media-thickening
#7
Barbara Schreier, Mirja Hünerberg, Sigrid Mildenberger, Sindy Rabe, Daniel Bethmann, Claudia Wickenhauser, Michael Gekle
AIM: In vivo vascular smooth muscle cell (VSMC) EGF receptor (EGFR) contributes to acute angiotensin II (AII) effects on vascular tone and blood pressure. The ubiquitously expressed EGFR has been implicated in vascular remodeling preceding end-organ damage by pharmacological inhibition, and AII signaling in cultured vascular cells is partly EGFR dependent. However the role of VSMC-EGFR in vivo during AII-induced pathophysiological processes is not known. METHODS: The present study assesses the in vivo relevance of VSMC-EGFR during chronic AII challenge without further stressors, using a mouse model with inducible, VSMC-specific EGFR knock out (VSMC-EGFR-KO)...
November 20, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/29149817/high-density-lipoprotein-hdl-dysfunction-and-future-of-hdl
#8
Sibel Ertek
Although high density lipoprotein cholesterol (HDL-C) levels are inversely proportional to cardiovascular risk in many studies, recent pharmacological interventional studies with HDL-C raising strategies did not show a benefit in terms of vascular events. The HDL particle is heterogenous with anti-atherogenic functions and non-vascular effects. Many factors affect HDL components and may either cause compositional changes, post-translational modifications of proteins, or alter lipids and other cargo molecules; generally these factors cause more than one of these changes, resulting in functional differences...
November 16, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29146905/pericytes-regulate-vegf-induced-endothelial-sprouting-through-vegfr1
#9
Hanna M Eilken, Rodrigo Diéguez-Hurtado, Inga Schmidt, Masanori Nakayama, Hyun-Woo Jeong, Hendrik Arf, Susanne Adams, Napoleone Ferrara, Ralf H Adams
Pericytes adhere to the abluminal surface of endothelial tubules and are required for the formation of stable vascular networks. Defective endothelial cell-pericyte interactions are frequently observed in diseases characterized by compromised vascular integrity such as diabetic retinopathy. Many functional properties of pericytes and their exact role in the regulation of angiogenic blood vessel growth remain elusive. Here we show that pericytes promote endothelial sprouting in the postnatal retinal vasculature...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29141072/association-of-cetp-gene-variants-with-risk-for-vascular-and-nonvascular-diseases-among-chinese-adults
#10
Iona Y Millwood, Derrick A Bennett, Michael V Holmes, Ruth Boxall, Yu Guo, Zheng Bian, Ling Yang, Sam Sansome, Yiping Chen, Huaidong Du, Canqing Yu, Alex Hacker, Dermot F Reilly, Yunlong Tan, Michael R Hill, Junshi Chen, Richard Peto, Hongbing Shen, Rory Collins, Robert Clarke, Liming Li, Robin G Walters, Zhengming Chen
Importance: Increasing levels of high-density lipoprotein (HDL) cholesterol through pharmacologic inhibition of cholesteryl ester transfer protein (CETP) is a potentially important strategy for prevention and treatment of cardiovascular disease (CVD). Objective: To use genetic variants in the CETP gene to assess potential risks and benefits of lifelong lower CETP activity on CVD and other outcomes. Design, Setting, and Participants: This prospective biobank study included 151 217 individuals aged 30 to 79 years who were enrolled from 5 urban and 5 rural areas of China from June 25, 2004, through July 15, 2008...
November 15, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29141066/vancomycin-infiltrate-induced-dermatitis-mimicking-bullous-cellulitis
#11
Sowmya Nanjappa, Matthew Snyder, John N Greene
<p>Extravasation of medications can manifest as tenderness, pain, tissue necrosis, and thrombophlebitis and lead to infection and severe long-term complications. Risk factors for leakage of medications include mechanical and pharmacologic mechanisms such as cannulation technique, vasoconstriction, and cytotoxicity. Well-known vesicants like anthracyclines, vinca alkaloids, and vasopressors are usually administered with proper caution. Often overlooked are many antimicrobial agents, which typically act via differences in osmolality and pH...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29140431/microvascular-adaptations-to-exercise-protective-effect-of-pgc-1-alpha
#12
Andrew O Kadlec, Chad Barnes, Matthew J Durand, David D Gutterman
BACKGROUND: Sedentary behavior and obesity are major risk factors for cardiovascular disease. Regular physical activity has independent protective effects on the cardiovascular system, but the mechanisms responsible remain elusive. Recent studies suggest that the protein peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) participates in the response to exercise training. We hypothesized that the arterioles of athletes maintain dilation to flow despite combined inhibition of multiple vasodilators, but loss of PGC-1α renders these vessels susceptible to inhibition of a single vasodilator pathway...
November 11, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/29138180/inhibition-of-vascular-c-jun-n-terminal-kinase-2-improves-obesity-induced-endothelial-dysfunction-after-roux-en-y-gastric-bypass
#13
Petia Doytcheva, Thomas Bächler, Erika Tarasco, Vincenzo Marzolla, Michael Engeli, Giovanni Pellegrini, Simona Stivala, Lucia Rohrer, Francesco Tona, Giovanni G Camici, Paul M Vanhoutte, Christian M Matter, Thomas A Lutz, Thomas F Lüscher, Elena Osto
BACKGROUND: Roux-en-Y gastric bypass (RYGB) reduces obesity-associated comorbidities and cardiovascular mortality. RYGB improves endothelial dysfunction, reducing c-Jun N-terminal kinase (JNK) vascular phosphorylation. JNK activation links obesity with insulin resistance and endothelial dysfunction. Herein, we examined whether JNK1 or JNK2 mediates obesity-induced endothelial dysfunction and if pharmacological JNK inhibition can mimic RYGB vascular benefits. METHODS AND RESULTS: After 7 weeks of a high-fat high-cholesterol diet, obese rats underwent RYGB or sham surgery; sham-operated ad libitum-fed rats received, for 8 days, either the control peptide D-TAT or the JNK peptide inhibitor D-JNKi-1 (20 mg/kg per day subcutaneous)...
November 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29133791/network-pharmacology-exploration-reveals-endothelial-inflammation-as-a-common-mechanism-for-stroke-and-coronary-artery-disease-treatment-of-danhong-injection
#14
Ming Lyu, Chun-Lin Yan, Hai-Xin Liu, Tai-Yi Wang, Xin-Hui Shi, Jin-Ping Liu, John Orgah, Guan-Wei Fan, Ji-Hong Han, Xiao-Ying Wang, Yan Zhu
Although Danhong injection (DHI) is the most widely prescribed Chinese medicine for both stroke and coronary artery disease (CAD), its underlying common molecular mechanisms remain unclear. An integrated network pharmacology and experimental verification approach was used to decipher common pharmacological mechanisms of DHI on stroke and CAD treatment. A compound-target-disease & function-pathway network was constructed and analyzed, indicating that 37 ingredients derived from DH (Salvia miltiorrhiza Bge., Flos Carthami tinctorii and DHI) modulated 68 common targets shared by stroke and CAD...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132404/comparison-of-the-efficacy-and-safety-of-fp-1201-lyo-intravenously-administered-recombinant-human-interferon-beta-1a-and-placebo-in-the-treatment-of-patients-with-moderate-or-severe-acute-respiratory-distress-syndrome-study-protocol-for-a-randomized-controlled
#15
Geoff Bellingan, David Brealey, Jordi Mancebo, Alain Mercat, Nicolò Patroniti, Ville Pettilä, Michael Quintel, Jean-Louis Vincent, Mikael Maksimow, Markku Jalkanen, Ilse Piippo, V Marco Ranieri
BACKGROUND: Acute respiratory distress syndrome (ARDS) results in vascular leakage, inflammation and respiratory failure. There are currently no approved pharmacological treatments for ARDS and standard of care involves treatment of the underlying cause, and supportive care. The vascular leakage may be related to reduced concentrations of local adenosine, which is involved in maintaining endothelial barrier function. Interferon (IFN) beta-1a up-regulates the cell surface ecto-5'-nucleotidase cluster of differentiation 73 (CD73), which increases adenosine levels, and IFN beta-1 may, therefore, be a potential treatment for ARDS...
November 13, 2017: Trials
https://www.readbyqxmd.com/read/29131070/pathophysiology-of-post-transplant-hypertension-in-kidney-transplant-focus-on-calcineurin-inhibitors-induced-oxidative-stress-and-renal-sodium-retention-and-implications-with-rhoa-rho-kinase-pathway
#16
Lorenzo A Calò, Verdiana Ravarotto, Francesca Simioni, Elena Naso, Francesco Marchini, Luciana Bonfante, Lucrezia Furian, Paolo Rigotti
Post-transplant hypertension is a common occurrence during treatment with calcineurin inhibitors (CNIs) in kidney transplant population. The pathogenesis of vasoconstriction induced by CNIs involves vascular tone alterations and kidney sodium transport regulation. Among the factors involved a key role is played by the activation of intrarenal renin-angiotensin system with enhanced release of Angiotensin II (Ang II) and increase of oxidative stress. A common pathway between oxidative stress and hypertension induced by CNIs may be identified in the involvement of the activation of RhoA/Rho kinase pathway, key for the induction of hypertension and cardiovascular-renal remodeling, of the oxidative stress mediated increased nitric oxide (NO) metabolism and increased renal sodium retention via increased activity of thiazide-sensitive sodium chloride cotransporter (NCC) in the distal tubule...
October 16, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29130940/neuropeptide-y-regulates-a-vascular-gateway-for-hematopoietic-stem-and-progenitor-cells
#17
Pratibha Singh, Jonathan Hoggatt, Malgorzata M Kamocka, Khalid S Mohammad, Mary R Saunders, Hongge Li, Jennifer Speth, Nadia Carlesso, Theresa A Guise, Louis M Pelus
Endothelial cells (ECs) are components of the hematopoietic microenvironment and regulate hematopoietic stem and progenitor cell (HSPC) homeostasis. Cytokine treatments that cause HSPC trafficking to peripheral blood are associated with an increase in dipeptidylpeptidase 4/CD26 (DPP4/CD26), an enzyme that truncates the neurotransmitter neuropeptide Y (NPY). Here, we show that enzymatically altered NPY signaling in ECs caused reduced VE-cadherin and CD31 expression along EC junctions, resulting in increased vascular permeability and HSPC egress...
November 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29130939/open-the-gates-vascular-neurocrine-signaling-mobilizes-hematopoietic-stem-and-progenitor-cells
#18
Tomer Itkin, Jésus María Gómez-Salinero, Shahin Rafii
Mobilization of hematopoietic stem and progenitor cells (HSPCs) from the bone marrow (BM) into the peripheral blood is a complex process that is enhanced dramatically under stress-induced conditions. A better understanding of how the mobilization process is regulated will likely facilitate the development of improved clinical protocols for stem cell harvesting and transplantation. In this issue of the JCI, Singh et al. (1) showed that the truncated cleaved form of neurotransmitter neuropeptide Y (NPY) actively promotes a breach of BM vascular sinusoidal portals, thereby augmenting HSPC trafficking to the circulation...
November 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29128622/efficacy-and-tolerability-of-pharmacological-interventions-for-pulmonary-arterial-hypertension-a-network-meta-analysis
#19
Hongjing Lin, Mupeng Wang, Ying Yu, Zeyu Qin, Xin Zhong, Jiahui Ma, Fangbo Zhao, Xueli Zhang
PURPOSE: This network meta-analysis (NMA) is designed to compare the efficacy and tolerability of various therapies and combinations for pulmonary arterial hypertension (PAH). METHOD: We conducted a systematic search in databases PubMed, Embase, and Cochrane Library. Treatment efficacy and tolerability were compared by synthesizing direct and indirect evidence. The surface under the curve ranking area was utilized to rank multiple interventions. RESULT: A total of 43 randomized clinical trials were included in our NMA...
November 8, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29127880/effects-of-flavonoids-on-microrna-145-regulation-through-klf4-and-myocardin-in-neointimal-formation-in-vitro-and-in-vivo
#20
Chiu-Mei Lin, Bao-Wei Wang, Chun-Ming Pan, Wei-Jen Fang, Su-Kiat Chua, Sheng-Wen Hou, Hang Chang, Kou-Gi Shyu
MicroRNA 145 (miR-145) is a critical modulator of vascular smooth muscle cell (VSMC) phenotyping and proliferation. Flavonoids have been studied extensively due to their diverse pharmacological properties, including anti-inflammatory effects. The aims of this study is designed to evaluate the atheroprotective effects on angiotensin II (Ang II)-induced miR-145 and Klf4/myocardin expression in vitro and in vivo of flavonoids, including (-)-epigallocatechin gallate (EGCG), chrysin, wogonin, silibinin, and ferulic acid...
September 14, 2017: Journal of Nutritional Biochemistry
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