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Bradykinin receptor

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https://www.readbyqxmd.com/read/28641545/role-of-bradykinin-in-the-regulation-of-endothelial-nitric-oxide-synthase-expression-by-cardiovascular-drugs
#1
Jin Bo Su
NO produced by eNOS plays important roles in the cardiovascular system. Alterations in eNOS activity and expression occur in various cardiovascular disorders and eNOS constitutes a therapeutic target. In addition to posttranslational modifications of eNOS that affect eNOS activity, transcriptional and post-transcriptional regulation of eNOS expression also controlls eNOS-derived NO production. Bradykinin is an important determinant of vascular function and participates in the regulation of eNOS activity and expression...
June 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28641140/effect-of-c1-inh-on-ischemia-reperfusion-injury-in-a-porcine-limb-ex-vivo-perfusion-model
#2
Mai M Abdelhafez, Jane Shaw, Damian Sutter, Jonas Schnider, Yara Banz, Hansjörg Jenni, Esther Voegelin, Mihai A Constantinescu, Robert Rieben
Revascularization of an amputated limb within 4-6h is essential to avoid extensive ischemia/reperfusion (I/R) injury leading to vascular leakage, edema and tissue necrosis. I/R injury is a pathological inflammatory condition that occurs during reperfusion of an organ or tissue after prolonged ischemia. It is characterized by a complex crosstalk between endothelial cell activation and the activation of plasma cascades. Vasculoprotective pharmacological intervention to prevent I/R injury might be an option to prolong the time window between limb amputation and successful replantation...
June 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28622690/exploiting-cancer-s-phenotypic-guise-against-itself-targeting-ectopically-expressed-peptide-g-protein-coupled-receptors-for-lung-cancer-therapy
#3
REVIEW
Mahjabin Khan, Tao Huang, Cheng-Yuan Lin, Jiang Wu, Bao-Min Fan, Zhao-Xiang Bian
Lung cancer, claiming millions of lives annually, has the highest mortality rate worldwide. This advocates the development of novel cancer therapies that are highly toxic for cancer cells but negligibly toxic for healthy cells. One of the effective treatments is targeting overexpressed surface receptors of cancer cells with receptor-specific drugs. The receptors-in-focus in the current review are the G-protein coupled receptors (GPCRs), which are often overexpressed in various types of tumors. The peptide subfamily of GPCRs is the pivot of the current article owing to the high affinity and specificity to and of their cognate peptide ligands, and the proven efficacy of peptide-based therapeutics...
June 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28616554/alpha2a-adrenergic-receptor-and-enos-genetic-polymorphisms-are-associated-with-exercise-muscle-vasodilatation-in-apparently-healthy-individuals
#4
Rafael Amorim Belo Nunes, Lucia Pereira Barroso, Alexandre da Costa Pereira, Maria Urbana Pinto Brandão Rondon, Carlos Eduardo Negrão, José Eduardo Krieger, Alfredo José Mansur
PURPOSE: Muscle vasodilatation during exercise has been associated with cardiovascular health and may be influenced by genetic variability. The purpose of this study was to evaluate functional genetic polymorphisms of physiologic pathways related to the regulation of the cardiovascular function (alpha-adrenergic receptors, endothelial nitric oxide synthase and bradykinin B2 receptor) and exercise muscle vasodilatation in apparently healthy men and women. METHODS: We enrolled 689 individuals without established cardiovascular disease that had attended a check-up program...
December 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28615126/unveiling-the-participation-of-avian-kinin-ornithokinin-and-its-receptors-in-the-chicken-inflammatory-response
#5
Rodrigo Guabiraba, Damien Garrido, Geoffrey Bailleul, Angélina Trotereau, Mélanie Pinaud, Anne-Christine Lalmanach, Nathalie K Chanteloup, Catherine Schouler
Vasoactive peptides are key early mediators of inflammation released through activation of different enzymatic systems. The mammalian kinin-kallikrein (K-KLK) system produces bradykinin (BK) through proteolytic cleavage of a kininogen precursor by enzymes named kallikreins. BK acts through specific ubiquitous G-protein coupled receptors (B1R and B2R) to participate in physiological processes and inflammatory responses, such as activation of mononuclear phagocytes. In chickens, the BK-like nonapeptide ornithokinin (OK) has been shown to promote intracellular calcium increase in embryonic fibroblasts and to be vasodilatory in vivo...
June 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28594791/-prospects-of-clinical-application-of-pharmacological-imitation-of-the-phenomenon-of-ischaemic-postconditioning-of-the-heart
#6
S Iu Tsibul'nikov, L N Maslov
Pharmacological imitation of the phenomenon of ischaemic postconditioning of the heart appears to exert a cardioprotective effect in the reperfusion period. It was determined that the protective effect may be carried out resulting from activation of the adenosine, opioid and bradykinin receptors. However, there is yet no common point of view concerning the question as to the activation of what subtypes of the receptors the cardioprotective effect of adenosine, opioids and bradykinin is associated with. The clinical findings strongly suggest that further studies are required, since the data obtained in the hitherto carried out trials are ambiguous, scarce, and sometimes yield contradicting results...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28566000/peripheral-kv7-channels-regulate-visceral-sensory-function-in-mouse-and-human-colon
#7
Madusha Peiris, James Rf Hockley, David E Reed, Ewan St John Smith, David C Bulmer, L Ashley Blackshaw
Background Chronic visceral pain is a defining symptom of many gastrointestinal disorders. The KV7 family (KV7.1-KV7.5) of voltage-gated potassium channels mediates the M current that regulates excitability in peripheral sensory nociceptors and central pain pathways. Here, we use a combination of immunohistochemistry, gut-nerve electrophysiological recordings in both mouse and human tissues, and single-cell qualitative real-time polymerase chain reaction of gut-projecting sensory neurons, to investigate the contribution of peripheral KV7 channels to visceral nociception...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28554847/panicolytic-like-action-of-bradykinin-in-the-dorsal-periaqueductal-gray-through-%C3%AE-opioid-and-b2-kinin-receptors
#8
Caio César Sestile, Jhonatan Christian Maraschin, Vanessa Scalco Gama, Hélio Zangrossi, Frederico Guilherme Graeff, Elisabeth Aparecida Audi
A wealth of evidence has shown that opioid and kinin systems may control proximal defense in the dorsal periaqueductal gray matter (dPAG), a critical panic-associated area. Studies with drugs that interfere with serotonin-mediated neurotransmission suggest that the μ-opioid receptor (MOR) synergistically interacts with the 5-HT1A receptor in the dPAG to inhibit escape, a panic-related behavior. A similar inhibitory effect has also been reported after local administration of bradykinin (BK), which is blocked by the non-selective opioid receptor antagonist naloxone...
May 26, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28552382/randomized-trial-of-icatibant-for-angiotensin-converting-enzyme-inhibitor-induced-upper-airway-angioedema
#9
Richard Sinert, Phillip Levy, Jonathan A Bernstein, Richard Body, Marco L A Sivilotti, Joseph Moellman, Jennifer Schranz, Jovanna Baptista, Alan Kimura, Wolfram Nothaft
BACKGROUND: Upper airway angioedema is a rare, unpredictable, and at times life-threatening adverse effect of angiotensin-converting enzyme inhibitors (ACE-Is) with no existing effective pharmacologic treatment. Icatibant is a bradykinin B2 receptor antagonist that may be beneficial in patients with ACE-I-induced angioedema. OBJECTIVE: We aimed to evaluate the efficacy of icatibant in subjects with ACE-I-induced angioedema. METHODS: At 31 centers in 4 countries, adults on ACE-Is who presented within 12 hours of the onset of at least moderately severe angioedema were randomized 1:1 to icatibant 30 mg or placebo administered subcutaneously...
May 25, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28540569/altered-purinergic-signaling-in-uridine-adenosine-tetraphosphate-induced-coronary-relaxation-in-swine-with-metabolic-derangement
#10
Zhichao Zhou, Oana Sorop, Vincent J de Beer, Ilkka Heinonen, Caroline Cheng, A H Jan Danser, Dirk J Duncker, Daphne Merkus
We previously demonstrated that uridine adenosine tetraphosphate (Up4A) induces potent and partially endothelium-dependent relaxation in the healthy porcine coronary microvasculature. We subsequently showed that Up4A-induced porcine coronary relaxation was impaired via downregulation of P1 receptors after myocardial infarction. In view of the deleterious effect of metabolic derangement on vascular function, we hypothesized that the coronary vasodilator response to Up4A is impaired in metabolic derangement, and that the involvement of purinergic receptor subtypes and endothelium-derived vasoactive factors (EDVFs) is altered...
May 24, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28538015/the-kallikrein-kinin-system-in-diabetic-kidney-disease
#11
Wenjuan Liu, Robert C Stanton, Zhaoyun Zhang
PURPOSE OF REVIEW: Diabetic kidney disease (DKD) is one of the most common complications in diabetes mellitus and accounts for a large proportion of clinical nephrology practice. Studies have shown that the kallikrein-kinin system (KKS) may be involved in several pathogenic mechanisms that contribute to DKD, including oxidative stress, inflammatory cytokines, and profibrotic autacoids. This review focuses on recent research advance on the potential role of the KKS in the development of DKD and its clinical relevance...
May 19, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28506550/cardioprotective-efficacy-of-sevoflurane-vs-propofol-during-induction-and-or-maintenance-in-patients-undergoing-coronary-artery-revascularization-surgery-without-pump-a-randomized-trial
#12
J L Guerrero Orriach, M Galán Ortega, A Ramirez Fernandez, M Ramirez Aliaga, M I Moreno Cortes, D Ariza Villanueva, A Florez Vela, J Alcaide Torres, C Santiago Fernandez, E Matute Gonzalez, E Alsina Marcos, J J Escalona Belmonte, M Rubio Navarro, L Garrido Sanchez, J Cruz Mañas
PURPOSE: Pre and post-operative administration of sevoflurane in myocardial revascularization surgery provides enhanced cardioprotective effects exerted by pharmacologic pre- and post-conditioning, as compared to propofol. The identification of the enzymes involved in conditioning mechanisms is crucial to the understanding of the effects of sevoflurane in cardiac surgery patients. The impact of sevoflurane on another crucial target organ-the kidney-was also assessed. METHODS: Ninety patients undergoing off-pump myocardial revascularization surgery were allocated to receive either intra- and postoperative sevoflurane (SS), intraoperative sevoflurane and postoperative propofol (SP), or intra- and postoperative propofol (PP))...
May 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28469598/involvement-of-the-bradykinin-b1-receptor-in-microglial-activation-in-vitro-and-in-vivo-studies
#13
Keren Asraf, Nofar Torika, Abraham Danon, Sigal Fleisher-Berkovich
The importance of brain inflammation to Alzheimer's disease (AD) pathogenesis has been accepted of late, with it currently being held that brain inflammation aggravates AD pathology. One important aspect of brain inflammation is the recruitment and activation of microglia, a process termed microgliosis. Kinins and bradykinin (BK), in particular, are major pro-inflammatory mediators in the periphery, although all of the factors comprising the kinin system have also been described in the brain. Moreover, it was shown that the amyloid β (Aβ) peptide (a component of AD plaques) enhances kinin secretion and activates BK receptors that can, in turn, stimulate Aβ production...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28464378/bradykinin-promotes-cell-proliferation-migration-invasion-and-tumor-growth-of-gastric-cancer-through-erk-signaling-pathway
#14
Guojun Wang, Junfeng Sun, Guanghui Liu, Yang Fu, Xiefu Zhang
Bradykinin (BK) has been reported to be involved in the progression of diverse types of cancer. In the present study, we investigated the possible role of BK in cell proliferation, migration, invasion and tumor growth of gastric cancer (GC). Cell proliferation was evaluated by MTT assays. Cell migration and invasion were assessed by Transwell assays. Tumor growth of nude mice was detected by establishing subcutaneous xenograft tumor model. Silencing of bradykinin B1 receptor (B1R) and the bradykinin B2 receptor (B2R) was performed by transfecting cells with si-B1R and si-B2R, respectively...
May 2, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28444548/post-effect-of-air-quality-improvement-on-biomarkers-for-systemic-inflammation-and-microparticles-in-asthma-patients-after-the-2008-beijing-olympic-games-a-pilot-study
#15
Jinming Gao, Xiaohua Xu, Zhekang Ying, Lei Jiang, Mianhua Zhong, Aixia Wang, Lung-Chi Chen, Bo Lu, Qinghua Sun
This study's aim was to investigate the post-effect of an air quality improvement on systemic inflammation and circulating microparticles in asthmatic patients during, and 2 months after, the Beijing Olympics 2008. We measured the levels of circulating inflammatory cytokines and microparticles in the peripheral blood from asthma patients and healthy controls during (phase 1), and 2 months after (phase 2) the Beijing 2008 Olympic Games. The concentrations of circulating cytokines (including TNFα, IL-6, IL-8, and IL-10) were still seen reduced in phase 2 when compared with those in phase 1...
April 25, 2017: Inflammation
https://www.readbyqxmd.com/read/28421141/excess-of-aminopeptidase-a-in-the-brain-elevates-blood-pressure-via-the-angiotensin-ii-type-1-and-bradykinin-b2-receptors-without-dipsogenic-effect
#16
Takuto Nakamura, Masanobu Yamazato, Akio Ishida, Yusuke Ohya
Aminopeptidase A (APA) cleaves angiotensin (Ang) II, kallidin, and other related peptides. In the brain, it activates the renin angiotensin system and causes hypertension. Limited data are available on the dipsogenic effect of APA and pressor effect of degraded peptides of APA such as bradykinin. Wistar-Kyoto rats received intracerebroventricular (icv) APA in a conscious, unrestrained state after pretreatment with (i) vehicle, (ii) 80 μg of telmisartan, an Ang II type-1 (AT1) receptor blocker, (iii) 800 nmol of amastatin, an aminopeptidase inhibitor, and (iv) 1 nmol of HOE-140, a bradykinin B2 receptor blocker...
2017: International Journal of Hypertension
https://www.readbyqxmd.com/read/28398146/protective-action-of-b1r-antagonist-against-cerebral-ischemia-reperfusion-injury-through-suppressing-mir-200c-expression-of-microglia-derived-microvesicles
#17
Min Tang, Ping Liu, Xia Li, Jian-Wen Wang, Xiong-Chao Zhu, Fang-Ping He
BACKGROUND AND OBJECTIVE: Cerebral ischemia-reperfusion (I/R) injury is a common side-effect for cerebral ischemic disease and its therapeutic regimen is limited. Kinin is pro-inflammatory peptide that is released and acts at the site of injury and inflammation such as brain and it works through bradykinin 1 receptor (B1R). The present study was to examine the effect of B1R antagonist on cerebral I/R injury and the potential mechanism. METHODS: Cerebral I/R injury was induced in mice by transient middle cerebral artery occlusion (MCAO)...
April 11, 2017: Neurological Research
https://www.readbyqxmd.com/read/28390948/relationship-of-angiotensin-i-converting-enzyme-ace-and-bradykinin-b2-receptor-bdkrb2-polymorphism-with-diabetic-nephropathy
#18
Honghong Zou, Guoqing Wu, Jinlei Lv, Gaosi Xu
PURPOSE: To determine whether ACE(2) I/D and BDKRB2(3) +9/-9 polymorphism causatively affect diabetic nephropathy progression RESULTS: STZ-induced metabolic disorder, as well as inflammatory responses, was significantly aggravated in ACE II-B2R(4)+9bp, ACE DD-B2R+9bp, or ACE DD-B2R-9bp diabetic mice but not ACE II-B2R-9bp, indicating the genetic susceptibility of ACE DD or B2R+9bp to diabetic nephropathy. Furthermore, ACE II-B2R+9bp, ACE DD-B2R+9bp, or ACE DD-B2R-9bp rather than ACE II-B2R-9bp, worsened renal performance and enhanced pathological alterations induced by STZ...
April 5, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28374922/synovial-membrane-receptors-as-therapeutic-targets-a-review-of-receptor-localization-structure-and-function
#19
REVIEW
Stephanie A Kleine, Steven C Budsberg
Joint pathology and degeneration is a significant cause of pain. The synovial membrane plays an important role in maintenance of the joint, contributes to the pathology of many arthropathies and may be adversely affected in joint disease. Improving knowledge of the receptors present within the synovium will aid in a better understanding of joint pathology and the development of new treatments for diseases such as osteoarthritis and rheumatoid arthritis. Knowledge of the location and function of synovial membrane receptors (both in healthy and diseased synovium) may provide important targets in the treatment of various arthropathies...
April 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28373410/bradykinin-b2-receptor-activation-regulates-renin-in-m-1-cells-via-protein-kinase-c-and-nitric-oxide
#20
Lucienne S Lara, Camille R T Bourgeois, Samir S El-Dahr, Minolfa C Prieto
In the collecting duct (CD), the interactions of renin angiotensin system (RAS) and kallikrein-kinin system (KKS) modulate Na(+) reabsorption, volume homeostasis, and blood pressure. In this study, we used a mouse kidney cortical CD cell line (M-1 cells) to test the hypothesis that in the CD, the activation of bradykinin B2 receptor (B2R) increases renin synthesis and release. Physiological concentrations of bradykinin (BK) treatment of M-1 cells increased renin mRNA and prorenin and renin protein contents in a dose-dependent manner and increased threefold renin content in the cell culture media...
April 2017: Physiological Reports
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