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https://www.readbyqxmd.com/read/29448294/impact-of-multidrug-resistance-protein-4-inhibitors-on-modulating-platelet-function-and-high-on-aspirin-treatment-platelet-reactivity
#1
Laura Alemanno, Isabella Massimi, Vanessa Klaus, Maria Luisa Guarino, Teresa Maltese, Luigi Frati, Dominick J Angiolillo, Fabio M Pulcinelli
Platelet multidrug resistance protein 4 (MRP4) plays a modulating role on platelet activation. Platelet function and thrombus formation are impaired in MRP4 knockout mice models, and, among aspirin-treated patients, high on-aspirin residual platelet reactivity (HARPR) positively correlates with MRP4 levels. To better understand the effects of MRP4 on platelet function, the aim of this investigation was to assess the impact of cilostazol-induced inhibition of MRP4-mediated transport and assess aspirin-induced antiplatelet effects and rates of HARPR in human subjects...
February 15, 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29448091/evidence-and-prospective-of-plant-derived-flavonoids-as-antiplatelet-agents-strong-candidates-to-be-drugs-of-future
#2
Harron Khan, Mohammad Jawad, Mohammad Ajmal Kamal, Alessandra Baldi, Jianbo Xiao, Seyed Mohammad Nabavi, Maria Daglia
Platelets are involved in hemostasis, inflammation, and thrombosis processes. Following a vascular damage, the endothelium releases protein factors, allowing the adhesion of subendothelium to platelets. Then platelets are activated, leading to the secretion of biologically-active ligands including thromboxane A2, adenosine diphosphate and serotonin. Aspirin, clopidogrel and warfarin are the most common drugs used to meet the challenges of platelet aggregation. However, these agents face issues with aspirin resistance and bleeding...
February 12, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29414455/aspirin-exacerbated-respiratory-disease-current-topics-and-trends
#3
REVIEW
José Carlos Rodríguez-Jiménez, Fernanda Judith Moreno-Paz, Luis Manuel Terán, Eduardo Guaní-Guerra
Aspirin-exacerbated respiratory disease is a chronic and treatment-resistant disease, characterized by the presence of eosinophilic rhinosinusitis, nasal polyposis, bronchial asthma, and nonsteroidal anti-inflammatory drugs hypersensitivity. Alterations in arachidonic acid metabolism may induce an imbalance between pro-inflammatory and anti-inflammatory substances, expressed as an overproduction of cysteinyl leukotrienes and an underproduction of prostaglandin E2. Although eosinophils play a key role, recent studies have shown the importance of other cells and molecules in the development of the disease like mast cells, basophils, lymphocytes, platelets, neutrophils, macrophages, epithelial respiratory cells, IL-33 and thymic stromal lymphopoietin, making each of them promissory diagnostic and treatment targets...
February 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29387829/the-effect-of-vitamin-e-and-aspirin-on-the-uterine-artery-blood-flow-in-women-with-recurrent-abortion-a-single-blind-randomized-controlled-trial
#4
Elaheh Mesdaghinia, Behnaz Mohammad-Ebrahimi, Fatemeh Foroozanfard, Hamid Reza Banafshe
Background: Recurrent spontaneous abortion has high incidence rate. The etiology is unknown in 30-40%. However high uterine artery resistance is accounted as one of the recurrent abortion reasons. Objective: The objective of the current study was to determine the impacts of vitamin E and aspirin on the uterine artery blood flow in women having recurrent abortions due to impaired uterine blood flow. Materials and Methods: This randomized clinical trial was conducted on 99 women having uterine pulsatility index (PI) more than 2...
October 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29386221/re-activation-of-camp-pathway-by-pde4d-inhibition-represents-a-novel-druggable-axis-for-overcoming-tamoxifen-resistance-in-er-positive-breast-cancer
#5
Rasmi Rekha Mishra, Nevin Belder, Suhail A Ansari, Merve Kayhan, Hilal Bal, Umar Raza, Pelin Gülizar Ersan, Ünal M Tokat, Erol Eyüpoğlu, Özge Saatci, Pouria Jandaghi, Stefan Wiemann, Ayşegül Üner, Caglar Cekic, Yasser Riazalhosseini, Özgür Şahin
PURPOSE: Tamoxifen remains an important hormonal therapy for ER-positive breast cancer (BC); however, development of resistance is a major obstacle in clinics. Here, we aimed to identify novel mechanisms of tamoxifen resistance and provide actionable drug targets overcoming resistance. EXPERIMENTAL DESIGN: Whole transcriptome sequencing, downstream pathway analysis and drug repositioning approaches were used to identify novel modulators (here: PDE4D) of tamoxifen resistance...
January 31, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29335863/integrative-medicine-on-optimizing-clopidogrel-and-aspirin-therapy
#6
REVIEW
Hui Chen
This article reviews the available published data on optimizing clopidogrel and aspirin therapy using translational and integrative medicine. Translational and evidence-based medical studies show that the CYP2C19 gene mutation (CYP2C19*2 and CYP2C19*3) could affect > 50% of the Chinese population, and that this mutation is closely associated with clopidogrel resistance and an increased risk of major adverse cardiovascular events, particularly stent thrombosis in patients following percutaneous coronary intervention (PCI)...
January 15, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29315961/reduction-of-thromboembolic-events-during-ablation-using-the-laserballoon-the-rethreva-registry
#7
Martin Eichenlaub, Arne Pfeufer, Lars Behrens, Volker Klauss, Michael Roettinger, Turgut Brodherr, Thorsten Lewalter
INTRODUCTION: Cerebral events (CE), including silent (SCE), are a known complication of left atrial catheter ablation (LACA) in patients with atrial fibrillation. The aim of this prospective registry was to gain more information about CE during laserballoon LACA and to reduce the risk of their occurrence. METHODS AND RESULTS: We enrolled 74 patients (age 61 ± 11 years; 74% male; CHA2 DS2 -VASc 1.9 ± 1.4). Cerebral MRI (1.5 Tesla) was performed to detect CE...
January 9, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29290171/health-care-costs-and-thromboembolic-events-in-hydroxyurea-treated-patients-with-polycythemia-vera
#8
Shreekant V Parasuraman, Nianwen Shi, Dilan C Paranagama, Machaon Bonafede
BACKGROUND: Patients with polycythemia vera (PV) are at increased risk of thromboembolic events (TEs), which are key contributors to reduced overall survival compared with the age- and sex-matched general population. In addition to aspirin and phlebotomy to maintain hematocrit level < 45%, many patients receive cytoreduction with hydroxyurea (HU), which is associated with improved survival and may reduce the risk of cardiovascular events and TEs. However, 1 in 4 patients become resistant to or intolerant of HU...
January 2018: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/29287309/aspirin-dose-in-kawasaki-disease-the-ongoing-battle
#9
Anita Dhanrajani, Mercedes Chan, Stephanie Pau, Janet Ellsworth, Ross Petty, Jaime Guzman
BACKGROUND: Kawasaki disease (KD) is an acute childhood vasculitis that may result in coronary aneurysms. Treatment of Kawasaki disease (KD) with a single infusion of 2g/kg intravenous immunoglobulin (IVIG) is well established, but acetyl-salicylic acid (ASA) dose remains controversial. METHODS: We reviewed charts of patients with KD from two Canadian centres to assess the impact of ASA dose on IVIG resistance (operationally defined as administration of a second dose of IVIG)...
December 29, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29285836/disease-and-treatment-characteristics-of-polycythaemia-vera-patients-in-belgium-results-from-a-scientific-survey
#10
Timothy Devos, Yves Beguin, Lucien Noens, Koen Van Eygen, Pierre Zachée, Philippe Mineur, Laurent Knoops, Chantal Doyen, Koen Theunissen, Fleur Samantha Benghiat, Michael Reusens, Wim Pluymers
OBJECTIVE: The current survey aimed to gather pre-defined disease parameters and treatment strategies to characterize the polycythaemia vera (PV) patient population in Belgium METHODS: Cross-sectional data from PV patients, seen at least once between May 2014 and May 2015 at 10 sites in Belgium, were collected in aggregated form and analysed descriptively and quantitatively RESULTS: Data from 343 PV patients were collected. Of these, 174 (50.7%) were male and 256 (74.6%) were ≥60 years of age...
December 29, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29283063/antiplatelet-potential-of-plant-derived-glycosides-as-possible-lead-compounds
#11
Haroon Khan, Aini Pervaiz, Mohammad A Kamal, Seema Patel
Blood platelets are crucial for maintaining hemostasis and several events in the wound-healing. However, platelet up-regulation leads to the development and the complications of several cardiovascular diseases. For the effective management of these complications, several synthetic drugs are in clinical practice such as aspirin and warfarin. since a long time. But some adverse reactions like aspirin resistance and bleed disorders cause patient in compliance and reduce their therapeutic potential. Thus, the search for potent and safer antiplatelet agents is of great interest...
December 27, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/29229321/the-role-of-aspirin-heparin-and-other-interventions-in-the-prevention-and-treatment-of-fetal-growth-restriction
#12
REVIEW
Katie M Groom, Anna L David
Fetal growth restriction and related placental pathologies such as preeclampsia, stillbirth, and placental abruption are believed to arise in early pregnancy when inadequate remodeling of the maternal spiral arteries leads to persistent high-resistance and low-flow uteroplacental circulation. The consequent placental ischaemia, reperfusion injury, and oxidative stress are associated with an imbalance in angiogenic/antiangiogenic factors. Many interventions have centered on the prevention and/or treatment of preeclampsia with results pertaining to fetal growth restriction and small-for-gestational-age pregnancy often included as secondary outcomes because of the common pathophysiology...
December 8, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29219758/the-use-of-alternatives-to-clopidogrel-in-flow-diversion-treatment-with-the-pipeline-embolization-device
#13
Elias Atallah, Hassan Saad, Kimon Bekelis, Nohra Chalouhi, Stavropoula Tjoumakaris, David Hasan, Jorge Eller, David Stidd, Robert H Rosenwasser, Pascal Jabbour
OBJECTIVE Thromboembolic complications continue to be encountered with Pipeline embolization devices (PEDs) despite routine clopidogrel/aspirin antiplatelet therapy. This study examined the safety and efficacy of prasugrel in the management of clopidogrel-resistant patients treated for cerebral aneurysms. METHODS Four hundred thirty-seven consecutive patients were identified between January 2011 and May 2016. Patients allergic, or having less than 30% platelet inhibition, to a daily 75-mg dose of clopidogrel received 10 mg of prasugrel daily (n = 20) or 90 mg of ticagrelor twice daily (n = 2)...
December 8, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29173671/acute-myopericardial-syndromes
#14
REVIEW
Ali Farzad, Jeffrey M Schussler
Acute myopericardial syndromes are common but can be challenging to manage and potentially have life-threatening complications. Careful clinical history, physical examination, electrocardiogram interpretation, and application of diagnostic criteria are needed to make an accurate diagnosis, exclude concomitant disease, and properly treat patients. Therapy for acute pericarditis should be guided per the underlying cause. For the most common causes, nonsteroidal antiinflammatory drugs or aspirin with the addition of colchicine remains the mainstay of therapy...
February 2018: Cardiology Clinics
https://www.readbyqxmd.com/read/29163956/eversion-endarterectomy-under-full-prasugrel-treatment
#15
Thomas Kotsis, Panagitsa Christoforou, Nikolaos Asaloumidis, Erifyli Argyra
The third-generation thienopyridine prasugrel has much stronger antiplatelet effect compared to other current antiplatelet inhibitors and exhibits practically zero resistance in healthy people. Prasugrel is used as a pre- and post-treatment in percutaneous coronary or neurovascular interventions with parallel aspirin regime. However, as there is a higher reported bleeding with intraluminal interventions and meticulous technique is recommended, there is nearly non-existent international experience of open surgery under full prasugrel treatment...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29163418/pharmacodynamics-pharmacokinetics-and-antiviral-activity-of-bay-81-8781-a-novel-nf-%C3%AE%C2%BAb-inhibiting-anti-influenza-drug
#16
Karoline Droebner, Emanuel Haasbach, Sabine E Dudek, Gerhard Scheuch, Karlheinz Nocker, Sebastian Canisius, Christina Ehrhardt, Georges von Degenfeld, Stephan Ludwig, Oliver Planz
Influenza is a respiratory disease that causes annual epidemics. Antiviral treatment options targeting the virus exist, but their efficiency is limited and influenza virus strains easily develop resistance. Thus, new treatment strategies are urgently needed. In the present study, we investigated the anti-influenza virus properties of D,L-lysine acetylsalicylate ⋅ glycine (BAY 81-8781; LASAG) that is approved as Aspirin i.v. for intravenous application. Instead of targeting the virus directly BAY 81-8781 inhibits the activation of the NF-κB pathway, which is required for efficient influenza virus propagation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29149707/over-expression-of-cyclooxygenase-2-in-increased-reticulated-platelets-leads-to-aspirin-resistance-after-elective-off-pump-coronary-artery-bypass-surgery
#17
Xiaoxuan Gong, Xuezhong Wang, Zhuowen Xu, Tiantian Zhu, Qiu Zhang, Jinying Zhang, Xiaowei Wang, Chunjian Li
INTRODUCTION: Aspirin resistance (AR) has been reported to present after coronary artery bypass graft causing saphenous vein graft failure. We aimed to investigate the factors that affect the anti-platelet effect of aspirin after off-pump coronary artery bypass surgery (OPCAB). MATERIALS AND METHODS: Thirty OPCAB candidates were successively recruited. Platelet count, platelet aggregation, reticulated platelet (RP), platelets' cyclooxygenase (COX)-1 and COX-2 expressions were determined during the peri-operative period...
November 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29139042/obesity-and-altered-aspirin-pharmacology
#18
REVIEW
Nicholas B Norgard
Obesity is an independent risk factor for cardiovascular morbidity and mortality due to atherothrombotic events and represents a group of patients who are in need of optimized antithrombotic therapy. Central to the obesity-related risk of atherothrombosis is a pro-thrombotic state characterized by increased levels of coagulation factors, impaired fibrinolysis, and platelet hyper-reactivity, which results from the interaction among the features clustering in obesity: insulin resistance, inflammation, oxidative stress, and endothelial dysfunction...
November 14, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29100372/biochemical-aspirin-resistance-is-associated-with-increased-stroke-severity-and-infarct-volumes-in-ischemic-stroke-patients
#19
Xuan Cheng, Nan-Chang Xie, Hong-Liang Xu, Chen Chen, Ya-Jun Lian
To explore the correlation of aspirin resistance (AR) with clinical stroke severity and infarct volume using diffusion-weighted imaging (DWI) in 224 Chinese ischemic stroke patients who were taking aspirin before stroke onset. In those patients, the median age was 64 years (IQR, 56-75 years), and males accounting for 54.9%(123)of the total subjects. Fifty of 224 enrolled patients (22.3%; 95% confidence interval (CI), 16.9% to 27.7%) showed AR. In the median regression model, significant increase was estimated in NIHSS score of 0...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29090588/decreased-turnover-aspirin-resistance-by-bidaily-aspirin-intake-and-efficient-cytoreduction-in-myeloproliferative-neoplasms
#20
Andréas Perrier-Cornet, Jean-Christophe Ianotto, Fanny Mingant, Maëla Perrot, Eric Lippert, Hubert Galinat
Essential thrombocythemia (ET) and polycythemia vera (PV) are myeloproliferative neoplasms (MPN) with an increased risk of arterial and venous thrombosis. Aspirin is recommended to reduce this risk, but resistance to antiplatelet therapy seems to hamper its efficacy in some patients. We have previously shown that multiple electrode aggregometry (MEA) was a valuable tool to assess aspirin resistance in MPN. In this study, MEA was used to assess the reduction in aspirin resistance after bi-daily (BID) aspirin intake or cytoreduction...
November 1, 2017: Platelets
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