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Condition: Thrombosis
Nutrition: Calcium

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Total 45 results found since Jan 2013.

Vitamin D and its possible relationship to neuroprotection in COVID-19: evidence in the literature
Curr Top Med Chem. 2022 Apr 1. doi: 10.2174/1568026622666220401140737. Online ahead of print.ABSTRACTVitamin D is a hormone involved in the regulation of important biological processes such as signal transduction, immune response, metabolic regulation and also in the nervous and vascular systems. To date, coronavirus disease 2019 (COVID-19) infection does not have a specific treatment, however various drugs have been proposed, including those that attenuate the intense inflammatory response and recently the use of vitamin D, in clinical trials, as part of the treatment of COVID-19 has provided promising results. It has bee...
Source: Current Topics in Medicinal Chemistry - April 3, 2022 Category: Chemistry Authors: Saray Quintero-Fabi án Cindy Bandala Luz Adriana Pichardo-Mac ías Itzel Jatziri Contreras-Garc ía Sa úl Gómez-Manzo Beatriz Hern ández-Ochoa Jos é Arturo Martínez-Orozco Iv án Ignacio-Mejía Noem í Cárdenas-Rodríguez Source Type: research

Piezo1 initiates platelet hyperreactivity and accelerates thrombosis in hypertension
CONCLUSIONS: Our study explains the activation of mechanoreceptor Piezo1 under hypertension is the key to abnormal platelet activation and thrombosis while providing novel platelet intervention strategies to prevent thrombosis.PMID:34411418 | DOI:10.1111/jth.15504
Source: Thrombosis and Haemostasis - August 19, 2021 Category: Hematology Authors: Weiyu Zhao Zeliang Wei Guang Xin Yulong Li Jiyan Yuan Yue Ming Chengjie Ji Qiushi Sun Shiyi Li Xinchuan Chen Wei Fu Ye Zhu Hai Niu Wen Huang Source Type: research

Synthesis and evaluation of novel and potent protease activated receptor 4 (PAR4) antagonists based on a quinazolin-4(3H)-one scaffold
In this study, we explored the activity of quinazolin-4(3H)-one-based PAR4 antagonists, beginning with their IDT analogues. By repeated structural optimisation, we developed a series of highly selective PAR4 antagonists with nanomolar potency on human platelets. Of these, 13 and 30g, with an 8-benzo[d]thiazol-2-yl-substituted quinazolin-4(3H)-one structure, showed optimal activity (h. PAR4-AP PRP IC50 = 19.6 nM and 6.59 nM, respectively) on human platelets. Furthermore, 13 and 30g showed excellent selectivity for PAR4 versus PAR1 and other receptors (IC50s > 10 μM) on human platelets. And 13 and 30g were lack of cross-...
Source: European Journal of Medicinal Chemistry - August 14, 2021 Category: Chemistry Authors: Shangde Liu Duo Yuan Shanshan Li Roujie Xie Yi Kong Xiong Zhu Source Type: research

BIN2 orchestrates platelet calcium signaling in thrombosis and thrombo-inflammation
Store-operated Ca2+ entry (SOCE) is the major route of Ca2+ influx in platelets. The Ca2+ sensor stromal interaction molecule 1 (STIM1) triggers SOCE by forming punctate structures with the Ca2+ channel Orai1 and the inositol trisphosphate receptor (IP3R), thereby linking the endo-/sarcoplasmic reticulum to the plasma membrane. Here, we identified the BAR domain superfamily member bridging integrator 2 (BIN2) as an interaction partner of STIM1 and IP3R in platelets. Deletion of platelet BIN2 (Bin2fl/fl,Pf4-Cre mice) resulted in reduced Ca2+ store release and Ca2+ influx in response to all tested platelet agonists. These de...
Source: Journal of Clinical Investigation - October 13, 2020 Category: Biomedical Science Authors: Julia Volz, Charly Kusch, Sarah Beck, Michael Popp, Timo Vögtle, Mara Meub, Inga Scheller, Hannah S. Heil, Julia Preu, Michael K. Schuhmann, Katherina Hemmen, Thomas Premsler, Albert Sickmann, Katrin G. Heinze, David Stegner, Guido Stoll, Attila Braun, M Source Type: research

TMEM16F Aggravates Neuronal Loss by Mediating Microglial Phagocytosis of Neurons in a Rat Experimental Cerebral Ischemia and Reperfusion Model
In this study, a middle-cerebral-artery occlusion/reperfusion (MCAO/R) model was used in adult male Sprague-Dawley rats in vivo, and cultured neurons were exposed to oxygen-glucose deprivation/reoxygenation (OGD/R) to simulate cerebral ischemia-reperfusion (I/R) injury in vitro. We found that the protein level of TMEM16F was significantly increased at 12 h after I-R injury both in vivo and in vitro, and reversible phosphatidylserine exposure was confirmed in neurons undergoing I/R injury in vitro. Additionally, we constructed a LV-TMEM16F-RNAi transfection system to suppress the expression of TMEM16F during and after cereb...
Source: Frontiers in Immunology - July 6, 2020 Category: Allergy & Immunology Source Type: research

Review on the Diagnosis and Treatment of Reversible Cerebral Vasoconstriction Syndrome in Children and Adolescents
Semin Neurol DOI: 10.1055/s-0040-1702942Reversible cerebral vasoconstriction syndrome (RCVS) is a clinical–radiologic diagnosis that affects children and adolescents, but it is much more frequently reported in adults. Clinically, patients present with severe and commonly recurrent thunderclap headaches. Typical precipitating triggers include vasoactive substances, serotonergic agents, and the postpartum period. There may be associated neurologic complications at presentation or in the weeks following, such as convexity subarachnoid hemorrhage, stroke, cerebral edema, cervical artery dissection (CeAD), and seizures. Angio...
Source: Seminars in Neurology - February 19, 2020 Category: Neurology Authors: Qubty, William Irwin, Samantha Lee Fox, Christine K. Tags: Review Article Source Type: research

Force Sensing by Piezo Channels in Cardiovascular Health and Disease.
Abstract Mechanical forces are fundamental in cardiovascular biology, and deciphering the mechanisms by which they act remains a testing frontier in cardiovascular research. Here, we raise awareness of 2 recently discovered proteins, Piezo1 and Piezo2, which assemble as transmembrane triskelions to combine exquisite force sensing with regulated calcium influx. There is emerging evidence for their importance in endothelial shear stress sensing and secretion, NO generation, vascular tone, angiogenesis, atherosclerosis, vascular permeability and remodeling, blood pressure regulation, insulin sensitivity, exercise per...
Source: Arteriosclerosis, Thrombosis and Vascular Biology - September 18, 2019 Category: Cardiology Authors: Beech DJ, Kalli AC Tags: Arterioscler Thromb Vasc Biol Source Type: research

Women's Health Initiative clinical trials: potential interactive effect of calcium and vitamin D supplementation with hormonal therapy on cardiovascular disease
Conclusions: CaD did not consistently modify the effect of CEE therapy or CEE + MPA therapy on CVD events. However, the increased risk of stroke due to CEE therapy appears to be mitigated by CaD supplementation. In contrast, CaD supplementation did not influence the risk of stroke due to CEE + MPA.
Source: Menopause - August 1, 2019 Category: OBGYN Tags: Original Articles Source Type: research

A Novel Role for the AnxA1-Fpr2/ALX Signaling Axis as a Key Regulator of Platelet Function to Promote Resolution of Inflammation.
Conclusions: AnxA1 affords protection by altering the platelet phenotype in cerebral I/RI from pro-pathogenic to regulatory, and reducing the propensity for platelets to aggregate and cause thrombosis by affecting integrin (αIIbβ3) activation, a previously unknown phenomenon. Thus, our data reveal a novel multi-faceted role for AnxA1 to act both as a therapeutic and a prophylactic drug via its ability to promote endogenous pro-resolving, anti-thrombo-inflammatory circuits in cerebral I/RI. Collectively, these results further advance our knowledge and understanding in the field of platelet and Resolution Biology. PMI...
Source: Circulation - June 2, 2019 Category: Cardiology Authors: Senchenkova EY, Ansari J, Becker F, Vital SA, Al-Yafeai Z, Sparkenbaugh EM, Pawlinski R, Stokes KY, Carroll JL, Dragoi AM, Qin CX, Ritchie RH, Sun H, Cuellar-Saenz HH, Rubinstein MR, Han YW, Orr AW, Perretti M, Granger DN, Gavins FNE Tags: Circulation Source Type: research

Using Dental Pulp Stem Cells for Stroke Therapy
Conclusion and Future Perspectives Stem cell-based therapy is a promising alternative for stroke treatment. While stem cells from different sources, including induced PSC, ESC, MSC, and NSC, have been investigated, using NSC and enhancing the natural mechanisms is most appropriate for brain repair. In preclinical models of stroke, stem cell transplantation has led to positive outcomes through a variety of cellular and molecular mechanisms, many being mediated by the array of beneficial factors produced by the cells. Recent advances in cellular reprogramming have provided alternative sources of NSC to be investigated, allo...
Source: Frontiers in Neurology - April 28, 2019 Category: Neurology Source Type: research

Cryptotanshinone Attenuates Oxygen-Glucose Deprivation/ Recovery-Induced Injury in an in vitro Model of Neurovascular Unit
Conclusions Despite the above limitations, we indicate that the protective mechanism of CTs against OGD/R damage might exert via inhibiting neuron apoptosis and attenuating BBB disruption. Furthermore, we also clarified that CTs inhibited neuronal apoptosis possibly by blocking the activation of MAPK signaling pathways, and CTs alleviating BBB disruption may associated with the regulation of TJPs and MMP-9 in our experiment. Accordingly, CTs will represent a novel and potent candidate for the treatment of CIRI in the future. Ethics Statement This study was carried out in accordance with the recommendations of China�...
Source: Frontiers in Neurology - April 17, 2019 Category: Neurology Source Type: research

An assay to measure levels of factor Xa inhibitors in blood and plasma.
CONCLUSION: The assay is ideal for rapidly and accurately measuring DOAC levels in plasma and blood, demonstrating its potential for point-of-care applications. This article is protected by copyright. All rights reserved. PMID: 30985986 [PubMed - as supplied by publisher]
Source: Thrombosis and Haemostasis - April 14, 2019 Category: Hematology Authors: Kim PY, Di Giuseppantonio LR, Wu C, Douketis JD, Gross PL Tags: J Thromb Haemost Source Type: research

Calcium-dependent blood-brain barrier breakdown by NOX5 limits postreperfusion benefit in stroke
Ischemic stroke is a predominant cause of disability worldwide, with thrombolytic or mechanical removal of the occlusion being the only therapeutic option. Reperfusion bears the risk of an acute deleterious calcium-dependent breakdown of the blood-brain barrier. Its mechanism, however, is unknown. Here, we identified type 5 NADPH oxidase (NOX5), a calcium-activated, ROS-forming enzyme, as the missing link. Using a humanized knockin (KI) mouse model and in vitro organotypic cultures, we found that reoxygenation or calcium overload increased brain ROS levels in a NOX5-dependent manner. In vivo, postischemic ROS formation, in...
Source: Journal of Clinical Investigation - March 19, 2019 Category: Biomedical Science Authors: Ana I. Casas, Pamela W.M. Kleikers, Eva Geuss, Friederike Langhauser, Thure Adler, Dirk H. Busch, Valerie Gailus-Durner, Martin Hrabê de Angelis, Javier Egea, Manuela G. Lopez, Christoph Kleinschnitz, Harald H.H.W. Schmidt Source Type: research