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Bradykinin receptor

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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/28899709/phosphorylation-of-epidermal-growth-factor-receptor-at-serine-1047-in-cultured-lung-alveolar-epithelial-cells-by-bradykinin-b2-receptor-stimulation
#2
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/28826826/the-relevance-of-kalikrein-kinin-system-via-activation-of-b2-receptor-in-lps-induced-fever-in-rats
#3
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
#4
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
#5
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/28810528/neuroprotection-of-bradykinin-bradykinin-b2-receptor-system-in-cerebral-ischemia
#6
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
#7
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/28797641/b2-kinin-receptors-in-the-dorsal-periaqueductal-gray-are-implicated-in-the-panicolytic-like-effect-of-opiorphin
#8
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/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
#9
Honghong Zou, Guoqing Wu, Jinlei Lv, Gaosi Xu
No abstract text is available yet for this article.
September 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28759126/ep2-receptor-plays-pivotal-roles-in-generating-mechanical-hyperalgesia-after-lengthening-contractions
#10
H Ota, K Katanosaka, S Murase, T Furuyashiki, S Narumiya, K Mizumura
We previously demonstrated that nerve growth factor (NGF) and glial cell line-derived neurotrophic factor (GDNF) were upregulated after lengthening contractions (LC) in exercised muscle through B2 bradykinin receptor activation and cyclooxygenase (COX)-2 upregulation, respectively, and that these trophic factors sensitized nociceptors resulting in mechanical hyperalgesia (delayed-onset muscle soreness, DOMS). Here, we examined the prostaglandin receptor subtype involved in DOMS. The mechanical withdrawal threshold of the exercised muscle was measured before and after LC in rats administered prostaglandin E2 receptor (EP) antagonists before LC, or in wild-type (WT), EP2 knockout (EP2(-/-) ), and IP knockout (IP(-/-) ) mice...
July 31, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28758595/vasodilator-effect-of-angiotensin-1-7-on-vascular-coronary-bed-of-rats-role-of-mas-ace-and-ace2
#11
Patrícia Lanza Moraes, Lucas Miranda Kangussu, Carlos Henrique Castro, Robson As Santos, Anderson José Ferreira, Alvair P Almeida
Angiotensin(Ang)-(1-7) is a biologically active member of the renin-angiotensin system that participates of the regulation of blood pressure. Although Ang-(1-7) is able to potentiate the vasodilator effect of bradykinin in coronary bed of rats, a direct vasodilator effect of Ang-(1-7) in this vascular bed has not been characterized. Thus, the aim of this study was to evaluate the mechanisms involved in the vasodilator effect of Ang-(1-7) in the vasculature of isolated rat hearts perfused according to the Langendorff technique at constant flow...
July 28, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28757212/bradykinin-b2-and-dopamine-d2-receptors-form-a-functional-dimer
#12
Anna Niewiarowska-Sendo, Agnieszka Polit, Monika Piwowar, Magdalena Tworzydło, Andrzej Kozik, Ibeth Guevara-Lora
In recent years a wide range of studies have shown that G protein-coupled receptors modulate a variety of cell functions through the formation of dimers. For instance, there is growing evidence for the dimerization of bradykinin or dopamine receptors, both as homodimers and heterodimers. A discovery of direct interactions of angiotensin II receptors with bradykinin 2 receptor (B2R) or dopamine D2 (D2R) receptor has led to a hypothesis on a potential dimerization between two latter receptors. In this study, we have demonstrated a constitutive colocalization of receptors on the membranes of HEK293 cells transiently transfected with plasmid vectors encoding B2R and D2R, fused with fluorescent proteins...
July 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28726167/early-increased-bradykinin-1-receptor-contributes-to-hemorrhagic-transformation-after-ischemic-stroke-in-type-1-diabetic-rats
#13
Hongfei Sang, Zhongming Qiu, Jin Cai, Wenya Lan, Linjie Yu, Hao Zhang, Min Li, Yi Xie, Ruibing Guo, Ruidong Ye, Xinfeng Liu, Ling Liu, Renliang Zhang
Hemorrhagic transformation (HT) is a major complication of ischemic stroke and further deteriorates neurological outcomes. Bradykinin 1 receptor (B1R) has been proven to mediate vasculo-toxicity in various experimental models. However, its role in the development of HT after stroke remains unclear. We detected the B1R expression in brain tissues with or without HT in a rat model of cerebral ischemia/reperfusion (I/R) with type 1 diabetes, showing higher B1R expression in the hemorrhagic areas than the ischemic tissues...
July 19, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28724979/impairment-of-coronary-endothelial-function-by-hypoxia-reoxygenation-involves-trpc3-inhibition-mediated-kca-channel-dysfunction-implication-in-ischemia-reperfusion-injury
#14
Xiang-Chong Wang, Wen-Tao Sun, Jie Fu, Jun-Hao Huang, Cheuk-Man Yu, Malcolm John Underwood, Guo-Wei He, Qin Yang
Despite increasing knowledge of the significance of calcium-activated potassium (KCa) and canonical transient receptor potential (TRPC) channels in endothelial physiology, no studies so far have investigated the link between these two distinct types of channels in the control of vascular tone in pathological conditions. We previously demonstrated that hypoxia-reoxygenation (H-R) inhibits endothelial KCa and TRPC3 channels in porcine coronary arteries (PCAs). The present study further investigated whether modulation of TRPC3 is involved in H-R-induced KCa channel inhibition and associated vasodilatory dysfunction using approaches of wire myography, whole-cell voltage-clamp, and coimmunoprecipitation...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724548/bradykinin-does-not-acutely-sensitize-the-reflex-pressor-response-during-hindlimb-skeletal-muscle-stretch-in-decerebrate-rats
#15
Korynne S Rollins, Joshua R Smith, Peter J Esau, Evan A Kempf, Tyler D Hopkins, Steven W Copp
Hindlimb skeletal muscle stretch (i.e., selective activation of the muscle mechanoreflex) in decerebrate rats evokes reflex increases in blood pressure and sympathetic nerve activity. Bradykinin has been found to sensitize mechano-gated channels through a bradykinin B2 receptor-dependent mechanism. Moreover, bradykinin B2 receptor expression on sensory neurons is increased following chronic femoral artery ligation in the rat (a model of simulated peripheral artery disease). We tested the hypothesis that, in decerebrate, unanesthetized rats, the injection of bradykinin into the arterial supply of a hindlimb would acutely augment (i...
July 19, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28723387/sigma-1-receptor-activation-modifies-intracellular-calcium-exchange-in-the-g93a-hsod1-als-model
#16
Vedrana Tadić, Ayse Malci, Nadine Goldhammer, Beatrice Stubendorff, Saikata Sengupta, Tino Prell, Silke Keiner, Jingyu Liu, Madlen Guenther, Christiane Frahm, Otto W Witte, Julian Grosskreutz
Aberrations in intracellular calcium (Ca(2+)) have been well established within amyotrophic lateral sclerosis (ALS), a severe motor neuron disease. Intracellular Ca(2+) concentration is controlled in part through the endoplasmic reticulum (ER) mitochondria Ca(2+) cycle (ERMCC). The ER supplies Ca(2+) to the mitochondria at close contacts between the two organelles, i.e. the mitochondria-associated ER membranes (MAMs). The Sigma 1 receptor (Sig1R) is enriched at MAMs, where it acts as an inter-organelle signaling modulator...
July 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28695794/withdrawn-the-natural-component-isolated-from-enterolobium-contortisiliquum-impairs-brain-tumors-and-affects-their-interactions-with-mesenchymal-stem-cells
#17
(no author information available yet)
Ahead of Print article withdrawn by publisher.
August 24, 2017: Oncology Research
https://www.readbyqxmd.com/read/28695400/role-of-collecting-duct-renin-in-the-pathogenesis-of-hypertension
#18
REVIEW
Alexis A Gonzalez, Lucienne S Lara, Minolfa C Prieto
The presence of renin production by the principal cells of the collecting duct has opened new perspectives for the regulation of intrarenal angiotensin II (Ang II). Angiotensinogen (AGT) and angiotensin-converting enzyme (ACE) are present in the tubular fluid coming from the proximal tubule and collecting duct. All the components needed for Ang II formation are present along the nephron, and much is known about the mechanisms regulating renin in juxtaglomerular cells (JG); however, those in the collecting duct remain unclear...
August 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28689178/sacubitril-valsartan-beyond-natriuretic-peptides
#19
REVIEW
Jagdeep S S Singh, Louise M Burrell, Myriam Cherif, Iain B Squire, Andrew L Clark, Chim C Lang
Natriuretic peptides, especially B-type natriuretic peptide (BNP), have primarily been regarded as biomarkers in heart failure (HF). However, they are also possible therapeutic agents due to their potentially beneficial physiological effects. The angiotensin receptor-neprilysin inhibitor, sacubitril/valsartan, simultaneously augments the natriuretic peptide system (NPS) by inhibiting the enzyme neprilysin (NEP) and inhibits the renin-angiotensin-aldosterone system (RAAS) by blocking the angiotensin II receptor...
July 8, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28687106/pathogenesis-of-hereditary-angioedema-the-role-of-the-bradykinin-forming-cascade
#20
REVIEW
Allen P Kaplan, Kusumam Joseph
Hereditary angioedema (HAE) is an autosomal-dominant disorder owing to mutations in the C1 inhibitor gene. Type I is characterized by a low C1 inhibitor protein level and diminished functional activity, whereas type II has a normal (or elevated) protein level but diminished function. When functional levels drop beyond 40% of normal, attacks of swelling are likely to occur due to overproduction of bradykinin. Angioedema can be peripheral, abdominal, or laryngeal. The typical duration of episodes is 3 days. Therapies include C1 inhibitor replacement for prophylaxis or acute therapy, whereas inhibition of kallikrein or blockade at the bradykinin receptor level can interrupt acute episodes of swelling...
August 2017: Immunology and Allergy Clinics of North America
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