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https://www.readbyqxmd.com/read/28928655/effects-of-simvastatin-beyond-dyslipidemia-exploring-its-antinociceptive-action-in-an-animal-model-of-complex-regional-pain-syndrome-type-i
#1
Graziela Vieira, Juliana Cavalli, Elaine C D Gonçalves, Tainara R Gonçalves, Larissa R Laurindo, Maíra Cola, Rafael C Dutra
Simvastatin is a lipid-lowering agent that blocks the production of cholesterol through inhibition of 3-hydroxy-methyl-glutaryl coenzyme A (HMG-CoA) reductase. In addition, recent evidence has suggested its anti-inflammatory and antinociceptive actions during inflammatory and pain disorders. Herein, we investigated the effects of simvastatin in an animal model of complex regional pain syndrome-type I, and its underlying mechanisms. Chronic post-ischemia pain (CPIP) was induced by ischemia and reperfusion (IR) injury of the left hind paw...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28912956/cardiometabolic-effects-of-a-novel-sirt1-activator-srt2104-in-people-with-type-2-diabetes-mellitus
#2
Radzi M Noh, Sowmya Venkatasubramanian, Shruti Daga, Jeremy Langrish, Nicholas L Mills, Ninian N Lang, Ethan Hoffmann, Brian Waterhouse, David E Newby, Brian M Frier
BACKGROUND: The cardiometabolic effects of SRT2104, a novel SIRT1 activator, were investigated in people with type 2 diabetes mellitus (T2DM). METHODS: Fifteen adults with T2DM underwent a randomised, double-blind, placebo-controlled cross-over trial and received 28 days of oral SRT2104 (2.0 g/day) or placebo. Forearm vasodilatation (measured during intrabrachial bradykinin, acetylcholine and sodium nitroprusside infusions) as well as markers of glycaemic control, lipid profile, plasma fibrinolytic factors, and markers of platelet-monocyte activation, were measured at baseline and at the end of each treatment period...
2017: Open Heart
https://www.readbyqxmd.com/read/28902927/bradykinin-insulin-and-glycemia-responses-to-exercise-performed-above-and-below-lactate-threshold-in-individuals-with-type-2-diabetes
#3
R Y Asano, R A V Browne, M M Sales, G Arsa, J F V N Moraes, H J Coelho-Júnior, M R Moraes, I Oliveira-Silva, S E Atlas, J E Lewis, H G Simões
The aim of this study was to analyze the acute responses of bradykinin, insulin, and glycemia to exercise performed above and below lactate threshold (LT) in individuals with type 2 diabetes mellitus (T2D). Eleven participants with a diagnosis of T2D randomly underwent three experimental sessions 72 h apart: 1) 20 min of exercise performed at 120% of LT (120%LT), 2) 20 min of exercise performed at 80% of LT (80%LT), and 3) 20 min of control session. Blood glucose was analyzed before, during, and at 45 min post-exercise...
September 12, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28899709/phosphorylation-of-epidermal-growth-factor-receptor-at-serine-1047-in-cultured-lung-alveolar-epithelial-cells-by-bradykinin-b2-receptor-stimulation
#4
Shunsuke Izumi, Sayomi Higa-Nakamine, Hiroyuki Nishi, Hidetsugu Torihara, Ayako Uehara, Kazuhiro Sugahara, Manabu Kakinohana, Hideyuki Yamamoto
Accumulating evidence indicates that epidermal growth factor receptor (EGFR) is desensitized by phosphorylation of serine 1047 (Ser1047). We and other groups have reported that stimulation of a receptor of tumor-necrosis factor α (TNFα) and Toll-like receptor 5 (TLR5) induced the phosphorylation of Ser1047 through activation of p38 mitogen-activated protein kinase (p38 MAPK) in cultured lung alveolar epithelial A549 cells. However, phosphorylation of EGFR at Ser1047 by stimulation of any G-protein coupled receptors (GPCRs) has not been reported in any cultured cells...
September 9, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28860991/antithrombotic-potential-of-tormentil-extract-in-animal-models
#5
Natalia Marcinczyk, Dominika Jarmoc, Agnieszka Leszczynska, Agnieszka Zakrzeska, Karol Kramkowski, Jakub Strawa, Anna Gromotowicz-Poplawska, Ewa Chabielska, Michal Tomczyk
Potentilla species that have been investigated so far display pharmacological activity mainly due to the presence of polyphenols. Recently, it was shown that polyphenol-rich extract from rhizome of Potentilla erecta (tormentil extract) affects the metabolism of arachidonic acid and exerts both anti-inflammatory and anti-oxidant activities, suggesting a possible effect on thrombosis. Accordingly, the aim of the study was to evaluate the effect of tormentil extract on haemostasis in a rat model of thrombosis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28827087/cerebrovascular-recovery-after-stroke-with-individual-and-combined-losartan-and-captopril-treatment-of-shrsp
#6
John S Smeda, Noriko Daneshtalab
We assessed whether the superior restoration of cerebrovascular function after hemorrhagic stroke by losartan versus captopril treatment was due to better BP, uremia, uricaemia, or aldosterone control in Kyoto Wistar stroke-prone-hypertensive rats and evaluated whether elevated angiotensin II (A2) levels enhanced the effectiveness of losartan treatment. Constriction was studied in the middle cerebral arteries (MCAs) using a pressure myograph. Post-stroke survival increased from 21 to 310 and 189days respectively with losartan and captopril treatment...
September 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28826826/the-relevance-of-kalikrein-kinin-system-via-activation-of-b2-receptor-in-lps-induced-fever-in-rats
#7
Denis de Melo Soares, Danielle R Santos, Christoph Rummel, Daniela Ott, Míriam C C Melo, Joachim Roth, João B Calixto, Glória E P Souza
PURPOSE: This study evaluated the involvement of endogenous kallikrein-kinin system and the bradykinin (BK) B1 and B2 receptors on LPS- induced fever and the POA cells involved in this response. MATERIAL AND METHODS: Male Wistar rats received either i.v. (1 mg/kg), i.c.v. (20 nmol) or i.h. (2 nmol) injections of icatibant (B2 receptor antagonist) 30 or 60 min, respectively, before the stimuli. DALBK (B1 receptor antagonist) was given either 15min before BK (i...
August 19, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28820397/long-term-feeding-with-bioactive-tripeptides-in-aged-hypertensive-and-normotensive-rats-special-focus-on-blood-pressure-and-bradykinin-induced-vascular-reactivity
#8
A Siltari, J Roivanen, R Korpela, H Vapaatalo
Bradykinin is the main player of the kallikrein-kinin system. Bradykinin-induced vasodilatation is age-dependent; this is believed to be associated with the level of expression of the two bradykinin receptors (BR1 and BR2) in the vasculature. The aim of this study was to clarify bradykinin-induced vascular reactivity of spontaneously hypertensive rats (SHR) and age-matched Wistar-Kyoto rats (WKY) after 6 weeks' consumption of a drink containing bioactive tripeptides (Ile-Pro-Pro, Val-Pro-Pro and Leu-Pro-Pro)...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28818177/angioedema
#9
Janina Hahn, Thomas K Hoffmann, Bastian Bock, Melanie Nordmann-Kleiner, Susanne Trainotti, Jens Greve
BACKGROUND: Acute angioedema of the upper airways can be life-threatening. An important distinction is drawn between mast-cell-mediated angioedema and bradykinin-mediated angioedema; the treatment of these two entities is fundamentally different. METHODS: This review is based on pertinent articles retrieved by a selective search in PubMed and on guidelines concerning the treatment of angioedema. The authors draw on their own clinical experience in their assessment of the literature...
July 24, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28816340/coagulation-factor-xii-regulates-inflammatory-responses-in-human-lungs
#10
Rosanna Hess, Lukasz Wujak, Christina Hesse, Katherina Sewald, Danny Jonigk, Gregor Warnecke, Hans-Gerd Fieguth, Steven de Maat, Coen Maas, Francesco Bonella, Klaus T Preissner, Benjamin Weiss, Liliana Schaefer, Wolfgang M Kuebler, Philipp Markart, Malgorzata Wygrecka
Increased procoagulant activity in the alveolar compartment and uncontrolled inflammation are hallmarks of the acute respiratory distress syndrome (ARDS). Here, we investigated whether the contact phase system of coagulation is activated and may regulate inflammatory responses in human lungs. Components of the contact phase system were characterized in bronchoalveolar lavage fluids (BALF) from 54 ARDS patients and 43 controls, and their impact on cytokine/chemokine expression in human precision cut lung slices (PCLS) was assessed by a PCR array...
August 17, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28810528/neuroprotection-of-bradykinin-bradykinin-b2-receptor-system-in-cerebral-ischemia
#11
REVIEW
Bingyuan Ji, Baohua Cheng, Yanyou Pan, Chunmei Wang, Jing Chen, Bo Bai
Bradykinin B2 receptor (B2R) activated by its endogenous ligand bradykinin participates in various physiological processes including neurogenesis, neuronal differentiation, and control of inflammation and blood pressure. Besides these effects, B2R has been demonstrated to protect neurons from ischemia/reperfusion (I/R) injury. Here, we highlight the mechanisms of BK/B2R-mediated neuroprotective effects in the peripheral and central nervous systems. Moreover, this review article summarizes some of the signaling pathways of B2R in cerebral ischemia, leading to a better understanding of its neuroprotection...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28808141/a-critical-role-for-plasma-kallikrein-in-the-pathogenesis-of-autoantibody-induced-arthritis
#12
Aizhen Yang, Junsong Zhou, Bo Wang, Jihong Dai, Robert W Colman, Wenchao Song, Yi Wu
The plasma kallikrein-kinin system (KKS) consists of serine proteases, prekallikrein (pKal) and factor XII (FXII), and a cofactor, high-MW kininogen (HK). Upon activation, activated pKal and FXII cleave HK to release bradykinin. Activation of this system has been noted in patients with rheumatoid arthritis, and its pathogenic role has been characterized in animal arthritic models. In this study, we generated 2 knockout mouse strains that lacked pKal and HK and determined the role of KKS in autoantibody-induced arthritis...
August 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28801827/rapid-screening-and-identification-of-ace-inhibitors-in-snake-venoms-using-at-line-nanofractionation-lc-ms
#13
Marija Mladic, Tessa de Waal, Lindsey Burggraaff, Julien Slagboom, Govert W Somsen, Wilfried M A Niessen, R Manjunatha Kini, Jeroen Kool
This study presents an analytical method for the screening of snake venoms for inhibitors of the angiotensin-converting enzyme (ACE) and a strategy for their rapid identification. The method is based on an at-line nanofractionation approach, which combines liquid chromatography (LC), mass spectrometry (MS), and pharmacology in one platform. After initial LC separation of a crude venom, a post-column flow split is introduced enabling parallel MS identification and high-resolution fractionation onto 384-well plates...
August 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28801761/milonine-a-morphinandienone-alkaloid-has-anti-inflammatory-and-analgesic-effects-by-inhibiting-tnf-%C3%AE-and-il-1%C3%AE-production
#14
Larissa Rodrigues Silva, Adriano Francisco Alves, Luiz Henrique Agra Cavalcante-Silva, Renan Marinho Braga, Reinaldo Nóbrega de Almeida, José Maria Barbosa-Filho, Márcia Regina Piuvezam
Milonine is a morphinandienone alkaloid from Cissampelos sympodialis Eichl (Menispermaceae), a plant used in Brazil to treat inflammatory disorders. In this study, we evaluated the anti-inflammatory and analgesic activity of milonine (MIL) by using classical experimental models of inflammation and nociception. The results showed that MIL reduced the paw edema formation induced by lipopolysaccharide, prostaglandin E2, and bradykinin, without interfering with the serotonin-induced edema. With respect to the nociception experiments, MIL decreased the exudate into the peritoneum induced by acetic acid, maintaining the tissue morphology...
August 11, 2017: Inflammation
https://www.readbyqxmd.com/read/28798744/the-mast-cell-contact-and-coagulation-system-connection-in-anaphylaxis
#15
REVIEW
Mar Guilarte, Anna Sala-Cunill, Olga Luengo, Moisés Labrador-Horrillo, Victoria Cardona
Anaphylaxis is the most severe form of allergic reaction, resulting from the effect of mediators and chemotactic substances released by activated cells. Mast cells and basophils are considered key players in IgE-mediated human anaphylaxis. Beyond IgE-mediated activation of mast cells/basophils, further mechanisms are involved in the occurrence of anaphylaxis. New insights into the potential relevance of pathways other than mast cell and basophil degranulation have been unraveled, such as the activation of the contact and the coagulation systems...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28797641/b2-kinin-receptors-in-the-dorsal-periaqueductal-gray-are-implicated-in-the-panicolytic-like-effect-of-opiorphin
#16
Caio César Sestile, Jhonatan Christian Maraschin, Marcel Pereira Rangel, Rosangela Getirana Santana, Hélio Zangrossi, Frederico Guilherme Graeff, Elisabeth Aparecida Audi
Reported results have shown that the pentapeptide opiorphin inhibits oligopeptidases that degrade brain neuropeptides, and has analgesic and antidepressant effects in experimental animals, without either tolerance or dependency after chronic administration. In a previous study we showed that opiorphin has a panicolytic-like effect in the dorsal periaqueductal gray (dPAG) electrical stimulation test (EST), mediated by the μ-opioid receptor (MOR). This study further analyzes the mechanism of opiorphin panicolytic action, using the EST and drug injection inside the dPAG...
August 7, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28794132/an-essential-role-of-high-molecular-weight-kininogen-in-endotoxemia
#17
Aizhen Yang, Zhanli Xie, Bo Wang, Robert W Colman, Jihong Dai, Yi Wu
In this study, we show that mice lacking high-molecular-weight kininogen (HK) were resistant to lipopolysaccharide (LPS)-induced mortality and had significantly reduced circulating LPS levels. Replenishment of HK-deficient mice with human HK recovered the LPS levels and rendered the mice susceptible to LPS-induced mortality. Binding of HK to LPS occurred through the O-polysaccharide/core oligosaccharide, consistent with the ability to bind LPS from K. pneumoniae, P. aeruginosa, S. minnesota, and different E...
August 9, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28782710/use-of-nebulized-milrinone-in-cardiac-surgery-comparison-of-vibrating-mesh-and-simple-jet-nebulizers
#18
Paul Gavra, Maxime Laflamme, André Y Denault, Yves Théôret, Louis P Perrault, France Varin
Cardiopulmonary bypass triggers an ischemia-reperfusion injury with endothelial dysfunction in the pulmonary circulation which can result in pulmonary hypertension. Inhaled milrinone reduces this reperfusion phenomenon and two methods commonly available for administering it are simple jet and vibrating mesh nebulization. However, neither their generated milrinone particle size profiles, nor their ability to aid endothelial relaxation have been compared. Simple jet and vibrating mesh particle size distributions of milrinone were verified through cascade impaction and their efficacy was tested on a cardiopulmonary bypass (CPB) swine model...
August 4, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28782632/cleaved-kininogen-as-a-biomarker-for-bradykinin-release-in-hereditary-angioedema
#19
Zonne L M Hofman, Steven de Maat, Chiara Suffritti, Andrea Zanichelli, Cassandra van Doorn, Silvie A E Sebastian, Nora Veszeli, Dorottya Csuka, Thomas Renné, Gerard Pasterkamp, Marco Cicardi, Henriette Farkas, C Erik Hack, Coen Maas
No abstract text is available yet for this article.
August 4, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28760261/corrigendum-to-relationship-of-angiotensin-i-converting-enzyme-ace-and-bradykinin-b2-receptor-bdkrb2-polymorphism-with-diabetic-nephropathy-bba-molecular-basis-of-disease-vol-1863-iss-6-2017-1264-1272
#20
Honghong Zou, Guoqing Wu, Jinlei Lv, Gaosi Xu
No abstract text is available yet for this article.
September 2017: Biochimica et Biophysica Acta
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