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https://www.readbyqxmd.com/read/28289183/c1-inhibitor-decreases-the-release-of-vasculitis-like-chemotactic-endothelial-microvesicles
#1
Maria Mossberg, Anne-Lie Ståhl, Robin Kahn, Ann-Charlotte Kristoffersson, Ramesh Tati, Caroline Heijl, Mårten Segelmark, L M Fredrik Leeb-Lundberg, Diana Karpman
The kinin system is activated during vasculitis and may contribute to chronic inflammation. C1-inhibitor is the main inhibitor of the kinin system. In this study, we investigated the presence of the kinin B1 receptor on endothelial microvesicles and its contribution to the inflammatory process. Compared with controls (n=15), patients with acute vasculitis (n=12) had markedly higher levels of circulating endothelial microvesicles, identified by flow cytometry analysis, and significantly more microvesicles that were positive for the kinin B1 receptor (P<0...
March 13, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28283888/kinin-receptors-sensitize-trpv4-channel-and-induce-mechanical-hyperalgesia-relevance-to-paclitaxel-induced-peripheral-neuropathy-in-mice
#2
Robson Costa, Maíra A Bicca, Marianne N Manjavachi, Gabriela C Segat, Fabiana Chaves Dias, Elizabeth S Fernandes, João B Calixto
Kinin B1 (B1R) and B2 receptors (B2R) and the transient receptor potential vanilloid 4 (TRPV4) channel are known to play a critical role in the peripheral neuropathy induced by paclitaxel (PTX) in rodents. However, the downstream pathways activated by kinin receptors as well as the sensitizers of the TRPV4 channel involved in this process remain unknown. Herein, we investigated whether kinins sensitize TRPV4 channels in order to maintain PTX-induced peripheral neuropathy in mice. The mechanical hyperalgesia induced by bradykinin (BK, a B2R agonist) or des-Arg(9)-BK (DABK, a B1R agonist) was inhibited by the selective TRPV4 antagonist HC-067047...
March 10, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28219400/alleviation-of-secondary-brain-injury-posttraumatic-inflammation-and-brain-edema-formation-by-inhibition-of-factor-xiia
#3
Sarah Hopp, Marc W Nolte, Christian Stetter, Christoph Kleinschnitz, Anna-Leena Sirén, Christiane Albert-Weissenberger
BACKGROUND: Traumatic brain injury (TBI) is a devastating neurological condition and a frequent cause of permanent disability. Posttraumatic inflammation and brain edema formation, two pathological key events contributing to secondary brain injury, are mediated by the contact-kinin system. Activation of this pathway in the plasma is triggered by activated factor XII. Hence, we set out to study in detail the influence of activated factor XII on the abovementioned pathophysiological features of TBI...
February 20, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28201967/dipeptidyl-peptidase-4-inhibitor-induced-angioedema-an-overlooked-and-potentially-lethal-adverse-drug-reaction
#4
Susanne Irene Scott, Michelle Fog Andersen, Lise Aagaard, Christian Von Buchwald, Eva Rye Rasmussen
Introduction Angioedema is a potentially fatal adverse drug reaction of some medications, as swellings of the upper airways can cause death by asphyxiation. Angiotensin converting enzyme-inhibitors are widely known to cause angioedema but less is known about the association between dipeptidyl peptidase-4 inhibitors (gliptins) and angioedema. Dipeptidyl peptidase-4 inhibitors are anti-diabetic drugs used to improve glycaemic control. They, as a class effect, inadvertently affect the degradation of the vasoactive kinins bradykinin and substance P, both of which can cause angioedema due to vasodilatation and increase in vascular permeability in the capillaries...
February 14, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28161805/mate-1-modulation-by-kinin-b1-receptor-enhances-cisplatin-efflux-from-renal-cells
#5
Gabriel R Estrela, Frederick Wasinski, Raphael J F Felizardo, Laura L Souza, Niels O S Câmara, Michael Bader, Ronaldo C Araujo
Cisplatin is a drug widely used in chemotherapy that frequently causes severe renal dysfunction. Organic transporters have an important role to control the absorption and excretion of cisplatin in renal cells. Deletion and blockage of kinin B1 receptor has already been show to protect against cisplatin-induced acute kidney injury. To test whether it exerts its protective function by modulating the organic transporters in kidney, we studied kinin B1 receptor knockout mice and treatment with a receptor antagonist at basal state and in presence of cisplatin...
February 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28160128/blockade-of-the-kinin-b1-receptor-affects-the-cytokine-chemokine-profile-in-rat-brain-subjected-to-autoimmune-encephalomyelitis
#6
Karolina Podsiadło, Grzegorz Sulkowski, Beata Dąbrowska-Bouta, Lidia Strużyńska
Kinins are bioactive peptides which provide multiple functions, including critical regulation of the inflammatory response. Released during tissue injury, kinins potentiate the inflammation which represents a hallmark of numerous neurological disorders, including those of autoimmune origin such as multiple sclerosis (MS). In the present work, we assess the expression of B1 receptor (B1R) in rat brain during the course of experimental autoimmune encephalomyelitis (EAE) which is an animal model of MS. We apply pharmacological inhibition to investigate the role of this receptor in the development of neurological deficits and in shaping the cytokine/chemokine profile during the course of the disease...
February 3, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28085119/transgenic-tobacco-expressing-the-tat-helicokinin-i-cpti-fusion-protein-show-increased-resistance-and-toxicity-to-helicoverpa-armigera-lepidoptera-noctuidae
#7
Zhou Zhou, Yongli Li, Chunyan Yuan, Yongan Zhang, Liangjian Qu
Insect kinins were shown to have diuretic activity, inhibit weight gain, and have antifeedant activity in insects. In order to study the potential of the TAT-fusion approach to deliver diuretic peptides per os to pest insects, the HezK I peptide from Helicoverpa zea, as a representative of the kinin family, was selected. The fusion gene TAT-HezK I was designed and was used to transform tobacco plants. As a means to further improve the stability of TAT-HezK I, a fusion protein incorporating HezK I, transactivator of transcription (TAT), and the cowpea trypsin inhibitor (CpTI) was also designed...
January 12, 2017: Genes
https://www.readbyqxmd.com/read/28078811/the-effects-of-nanomaterials-on-blood-coagulation-in-hemostasis-and-thrombosis
#8
REVIEW
Jan Simak, Silvia De Paoli
The blood coagulation balance in the organism is achieved by the interaction of the blood platelets (PLTs) with the plasma coagulation system (PCS) and the vascular endothelial cells. In healthy organism, these systems prevent thrombosis and, in events of vascular damage, enable blood clotting to stop bleeding. The dysregulation of hemostasis may cause serious thrombotic and/or hemorrhagic pathologies. Numerous engineered nanomaterials are being investigated for biomedical purposes and are unavoidably exposed to the blood...
January 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28066096/pain-on-propofol-injection-causes-and-remedies
#9
REVIEW
Kalindi Anil Desousa
Pain on propofol injection (POPI) is a minor problem that all anesthetists face every day. Introduction of several new formulations and hundreds of clinical trials have failed to find its remedy with just one intervention in all patients. This article highlights the causes of POPI and interventions that are used to eliminate this pain in current practice. Relevant articles from Medline and Embase databases were searched and included in this descriptive review with the following conclusions: (1) POPI is due to irritation of venous adventitia leading to release of mediators such as kininogen from kinin cascade...
November 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/28065968/therapeutic-uses-of-pineapple-extracted-bromelain-in-surgical-care-a-review
#10
Zehra Abdul Muhammad, Tashfeen Ahmad
Bromelain is an extract obtained from the pineapple plant and is used as a traditional folk remedy for several ailments. In this review, a comprehensive electronic database search was carried out to compile available literature on therapeutic implications of bromelain. Pharmaceutical value of bromelain has been demonstrated in different surgical sub-specialties. Diverse biological processes like anti-inflammatory, anti-oedematous, analgesic, anti-thrombotic, exfoliation etc. are involved in bromelain's therapeutic actions, mediated through the kallikrein-kinin and arachidonic acid pathways as well as through effects on cell mediated immunity...
January 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28003079/leukocyte-derived-microvesicles-dock-on-glomerular-endothelial-cells-stardust-in-the-kidney
#11
Matthias Mack
Microvesicles are released from the plasma membrane of various cell types, can be taken up by other cells, and can transport membrane proteins and cytosolic contents between cells. Kahn et al. demonstrate that leukocyte-derived microvesicles bearing B1-kinin receptors are enriched in the plasma of vasculitis patients and dock on endothelial cells in the glomerulus. Cell culture experiments suggest that B1-receptors transferred by these microvesicles are functionally active on acceptor cells.
January 2017: Kidney International
https://www.readbyqxmd.com/read/28002223/is-there-a-role-for-inflammation-in-contact-lens-discomfort
#12
Mark D P Willcox
PURPOSE: The aim of this study was to examine the literature with respect to inflammation of the ocular surface and the presence of inflammatory mediators in the tear film during contact lens wear. METHODS: The literature on contact lens discomfort that relates to signs of inflammation was searched. Reference was paid to the cardinal signs of inflammation (pain, heat, redness, and swelling) as well as the appearance of inflammatory mediators in the tear film during contact lens wear...
January 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/27999472/carbamazepine-induced-angioedema
#13
Ansha Subramanian, Mangaiarkkarasi Adhimoolam, Senthil Gopalakrishnan, Meher Ali Rajamohammed
Angioedema is a rare adverse reaction of carbamazepine, which causes localized tissue edema in submucosal and subcutaneous tissue mediated by histamine, serotonin, and kinins (bradykinin). We report a case of 34-year-old female who developed angioedema, 24 h after administration of carbamazepine for treating bipolar disorder. Patient's symptoms responded rapidly with antihistamine therapy and with the withdrawal of carbamazepine, the offending drug. Carbamazepine-induced angioedema is a life-threatening reaction which requires immediate treatment and monitoring in order to avoid morbidity and mortality...
September 2016: Journal of Basic and Clinical Pharmacy
https://www.readbyqxmd.com/read/27990282/the-complement-system-an-evolution-in-progress
#14
REVIEW
Berhane Ghebrehiwet
The complement system, which consists of three independent but interacting pathways, constitutes a powerful arm of innate immunity. Its major function is to recognize and destroy pathogenic microorganisms as well as eliminate modified self-antigens. Although it is a fine-tuned system with innate capacity to discriminate self from non-self as well as danger from non-danger signals, an unwarranted activation can nonetheless occur and cause tissue destruction. To prevent such activation, specific regulators present both in plasma and on the cell surface tightly control it...
2016: F1000Research
https://www.readbyqxmd.com/read/27988430/kinin-receptors-key-regulators-of-autoimmunity
#15
REVIEW
Rafael Cypriano Dutra
The central function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body, and preventing the onset of illness and infection. Moreover, the immune system is constantly challenged to discriminate self vs. non-self and mediate the correct response, a phenomenon called self-tolerance. The failure of mechanisms responsible for self-tolerance and induction of an immune response against components of the self, induces autoimmunity and culminates however, in several autoimmune diseases...
February 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/27984711/evaluation-of-anaphylactoid-constituents-in-vitro-and-in-vivo
#16
Yubin Xu, Chunyan Liu, Deqiang Dou, Qiuhong Wang
Natural medicine injections have been widely used in clinics, while adverse reaction reports also have increased rapidly in recent years. To examine the anaphylactoid constituents of natural medicine injections, RBL-2H3 cell degranulation and human serum complement activation models were used to screen the anaphylactoid constituents, and the BN rat model was used to explore the anaphylactoid mechanism of these constituents. The result of an in vitro study showed that the individual compounds of natural medicine injections (chlorogenic acid, hyodeoxycholic acid, cholalic acid, ginkgolic acid, phillyrin, schisandrin B, schisandrin A, puerarin, and tanshinone IIA) and polysaccharide could not induce RBL-2H3 to release histamine and β-hexosaminidase, while proteins Tween-80 and tannic acid were the main anaphylactoid constituents in the natural medicine injections...
February 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/27965959/a-novel-antithrombotic-mechanism-mediated-by-the-receptors-of-the-kallikrein-kinin-and-renin-angiotensin-systems
#17
REVIEW
Alvin H Schmaier
The contact activation (CAS) and kallikrein/kinin (KKS) systems regulate thrombosis risk in two ways. First, the CAS influences contact activation-induced factor XI activation and thrombin formation through the hemostatic cascade. Second, prekallikrein (PK) and bradykinin of the KKS regulate expression of three vessel wall G-protein-coupled receptors, the bradykinin B2 receptor (B2R), angiotensin receptor 2, and Mas to influence prostacyclin formation. The degree of intravascular prostacyclin formation inversely regulates intravascular thrombosis risk...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27960614/long-term-individual-shear-rate-therapy-counterpulsation-enhances-plasma-nitrite-release-in-patients-with-pad
#18
Michèle Brix, Eva-Elina Buschmann, Andreas Zietzer, Jonnel Anthony Jaurigue, Lulu Li, Constantin Jungk, Ivo Buschmann, Doreen Janke, Philipp Hillmeister
BACKGROUND: Individual shear rate therapy (ISRT) has been designed as a novel non-invasive treatment option for peripheral artery disease (PAD) patients and has been shown to improve endothelial function and walking distance. The aim of this study was to elucidate the impact of ISRT on the level of nitric oxide in patient blood plasma and the expression of related molecular markers in peripheral blood mononuclear cells (PBMCs). Molecular diagnostic tests were performed for two ISRT trials...
December 14, 2016: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/27925683/inorganic-polyphosphate-a-key-modulator-of-inflammation
#19
REVIEW
S M Hassanian, A Avan, A Ardeshirylajimi
Inorganic polyphosphate (PolyP) is a molecule with prothrombotic and proinflammatory properties in blood. PolyP activates the NF-κB signaling pathway, increases the expression of cell surface adhesion molecules and disrupts the vascular barrier integrity of endothelial cells. PolyP-induced NF-κB activation and vascular hyperpermeability are regulated by the mammalian target of rapamycin complex-1 (mTORC1) and mTORC2 pathways, respectively. Through interaction with receptor for advanced glycation end products (RAGE) and P2Y1 receptors, PolyP dramatically amplifies the proinflammatory responses of nuclear proteins...
February 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27924789/kallikrein-kinin-system-is-it-the-fountain-of-youth
#20
Giulio Garaffa, Fabio Castiglione
No abstract text is available yet for this article.
January 2017: Asian Journal of Andrology
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