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https://www.readbyqxmd.com/read/29304392/aspirin-non-responsiveness-in-pregnant-women-at-high-risk-of-pre-eclampsia
#1
Kate Navaratnam, Ana Alfirevic, Andrea Jorgensen, Zarko Alfirevic
OBJECTIVES: Low-dose aspirin is recommended for prevention of pre-eclampsia in high-risk pregnant women. Current doses provide a conservative risk reduction and some individuals demonstrate 'aspirin non-responsiveness', with insufficient antiplatelet effects. We aimed to determine if aspirin non-responsiveness could be identified in women at high risk of pre-eclampsia and assess for potential associations with placentally-mediated adverse outcomes. STUDY DESIGN: Prospective cohort study...
January 1, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29276386/guided-bone-regeneration-with-asymmetric-collagen-chitosan-membranes-containing-aspirin-loaded-chitosan-nanoparticles
#2
Jiayu Zhang, Shiqing Ma, Zihao Liu, Hongjuan Geng, Xin Lu, Xi Zhang, Hongjie Li, Chenyuan Gao, Xu Zhang, Ping Gao
Introduction: Membranes allowing the sustained release of drugs that can achieve cell adhesion are very promising for guided bone regeneration. Previous studies have suggested that aspirin has the potential to promote bone regeneration. The purpose of this study was to prepare a local drug delivery system with aspirin-loaded chitosan nanoparticles (ACS) contained in an asymmetric collagen-chitosan membrane (CCM). Methods: In this study, the ACS were fabricated using different concentrations of aspirin (5 mg, 25 mg, 50 mg, and 75 mg)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29274727/antiplatelet-therapy-with-aspirin-clopidogrel-and-dipyridamole-versus-clopidogrel-alone-or-aspirin-and-dipyridamole-in-patients-with-acute-cerebral-ischaemia-tardis-a-randomised-open-label-phase-3-superiority-trial
#3
Philip M Bath, Lisa J Woodhouse, Jason P Appleton, Maia Beridze, Hanne Christensen, Robert A Dineen, Lelia Duley, Timothy J England, Katie Flaherty, Diane Havard, Stan Heptinstall, Marilyn James, Kailash Krishnan, Hugh S Markus, Alan A Montgomery, Stuart J Pocock, Marc Randall, Annemarei Ranta, Thompson G Robinson, Polly Scutt, Graham S Venables, Nikola Sprigg
BACKGROUND: Intensive antiplatelet therapy with three agents might be more effective than guideline treatment for preventing recurrent events in patients with acute cerebral ischaemia. We aimed to compare the safety and efficacy of intensive antiplatelet therapy (combined aspirin, clopidogrel, and dipyridamole) with that of guideline-based antiplatelet therapy. METHODS: We did an international, prospective, randomised, open-label, blinded-endpoint trial in adult participants with ischaemic stroke or transient ischaemic attack (TIA) within 48 h of onset...
December 20, 2017: Lancet
https://www.readbyqxmd.com/read/29245288/elevated-serum-lipoprotein-a-as-a-risk-factor-for-combined-intracranial-and-extracranial-artery-stenosis-in-a-child-with-arterial-ischemic-stroke-a-case-report
#4
Ji Yoon Han, Hyun Jeong Kim, Soyoung Shin, Joonhong Park, In Goo Lee
RATIONALE: Stroke is an uncommon disease in childhood with an estimated incidence of 1 to 6 per 100,000 and stenoocclusive arteriopathy is the main risk factor of recurrent pediatric arterial ischemic stroke (AIS). Dyslipidemia may influence strongly before puberty and in late adolescence when plasma levels are naturally highest. PATIENT CONCERNS: An 11-year-old male presented with acute onset seizure, a drowsy mentality, and right hemiplegia. DIAGNOSES: Magnetic resonance (MR) angiogram demonstrated occlusion of distal basilar artery and left vertebral arteries...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29227173/changes-in-platelet-function-with-inflammation-in-patients-undergoing-vascular-surgery
#5
Bartosz Olechowski, Vikram Khanna, Mark Mariathas, Alexander Ashby, Richard T Dalton, Ian Nordon, Nicola Englyst, Scott Harris, Zoe Nicholas, Kala Thayalasamy, Michael Mahmoudi, Nick Curzen
The role of platelets in ischaemic events is well established. Aspirin represents the default antiplatelet and blocks the metabolism of arachidonic acid (AA) at the cyclo-oxygenase enzyme (COX). AA is commonly used as a test of response to aspirin, but recent data raise uncertainty about the validity of this approach. Specifically, in some patients AA-induced clotting is not suppressed, but the level of COX-dependent AA metabolite, thromboxane B2 (TXB2) is negligible. Furthermore, AA-induced whole blood clotting varies dynamically in individuals, who are aspirin responsive according to TXB2 levels...
December 11, 2017: Platelets
https://www.readbyqxmd.com/read/29219758/the-use-of-alternatives-to-clopidogrel-in-flow-diversion-treatment-with-the-pipeline-embolization-device
#6
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/29185103/unraveling-the-interaction-of-aspirin-ticagrelor-and-rosuvastatin-on-the-progression-of-atherosclerosis-and-inflammation-in-diabetic-mice
#7
Yumei Ye, Sven Nylander, Yochai Birnbaum
PURPOSE: We explored the effects of rosuvastatin, aspirin, ticagrelor, and clopidogrel, alone or in combinations on the progression of atherosclerosis and inflammasome activation in diabetic mice. Statins and ticagrelor increase the production of 15-epi-lipoxin A4 via cyclooxygenase-2. Aspirin alone increases 15-epi-lipoxin A4, but when combined with statins, cyclooxygenase-2 is completely blocked. METHODS: ApoE-/-/db+/db+ double-knockout mice received rosuvastatin (5 mg/kg/day), aspirin (25 mg/kg/day), ticagrelor (300 mg/kg/day), clopidogrel (75 mg/kg/day), or their combination for 14 weeks...
December 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29150806/ticagrelor-a-review-in-long-term-secondary-prevention-of-cardiovascular-events
#8
Zaina T Al-Salama, Gillian M Keating, Susan J Keam
Ticagrelor (Brilique®) is an orally administered P2Y12 inhibitor. A long-term (maintenance) regimen of ticagrelor 60 mg twice daily is indicated in the EU for coadministration with low-dose aspirin 75-150 mg/day for the secondary prevention of atherothrombotic events in high-risk patients with a history of myocardial infarction (MI) of at least 1 year. Approval is based on the results of the PEGASUS-TIMI 54 trial that compared ticagrelor with placebo (in conjunction with low-dose aspirin) in stable patients who had had a spontaneous MI 1-3 years prior to enrolment and were at high risk of atherothrombotic events...
December 2017: Drugs
https://www.readbyqxmd.com/read/29137043/portal-vein-thrombosis-before-and-after-transjugular-intrahepatic-portosystemic-shunt-placement-an-observational-study-strobe-compliant
#9
Yue-Meng Wan, Yu-Hua Li, Hua-Mei Wu, Zhi-Yuan Xu, Ying Xu, Li-Hong Yang, Xi-Nan Wu, Jin-Hui Yang
Portal vein thrombosis (PVT) is common in patients with cirrhosis undergoing transjugular intrahepatic portosystemic shunt (TIPS). This study had 3-fold aims: to assess risk factors for PVT; to determine the efficacy of anticoagulant therapy; to investigate the impact of PVT on clinical outcomes in TIPS-treated cirrhosis.Between June 2012 and February 2016, 126 TIPS-treated patients with cirrhosis were enrolled and studied prospectively. Enrolled patients were screened for PVT before TIPS and at 3, 6, 12, and 24 months post-TIPS...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29118712/comparative-long-term-effect-of-three-anti-p2y12-drugs-after-percutaneous-angioplasty-an-observational-study-based-on-electronic-drug-adherence-monitoring
#10
Valentina Forni Ogna, Isabelle Bassi, Isabelle Menetrey, Olivier Muller, Eric Tousset, Pierre Fontana, Eric Eeckhout, Chin B Eap, Bernard Vrijens, Michel Burnier, Grégoire Wuerzner
Aims: Dual platelet inhibition using anti-P2Y12 drugs and aspirin is the standard of care in patients after percutaneous coronary interventions (PCI). Prasugrel and ticagrelor have been shown to be more potent than clopidogrel with less high on-treatment platelet reactivity. Whether differences in long-term adherence to these drugs can partly explain different antiplatelet efficacy has not been studied so far. The objective was to compare the long-term P2Y12 receptor inhibition and drug adherence to different anti-P2Y12 drugs, and to assess the impact of adherence on the pharmacodynamic effect...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29101117/double-dose-versus-standard-dose-clopidogrel-according-to-smoking-status-among-patients-with-acute-coronary-syndromes-undergoing-percutaneous-coronary-intervention
#11
Matthias Bossard, Christopher B Granger, Jean-Francois Tanguay, Gilles Montalescot, David P Faxon, Sanjit S Jolly, Petr Widimsky, Kari Niemela, Philippe Gabriel Steg, Madhu K Natarajan, Peggy Gao, Keith A A Fox, Salim Yusuf, Shamir R Mehta
BACKGROUND: Prior Studies have suggested better outcomes in smokers compared with nonsmokers receiving clopidogrel ("smoker's paradox"). The impact of a more intensive clopidogrel regimen on ischemic and bleeding risks in smokers with acute coronary syndromes requiring percutaneous coronary interventions remains unclear. METHODS AND RESULTS: We analyzed 17 263 acute coronary syndrome patients undergoing percutaneous coronary intervention from the CURRENT-OASIS 7 (Clopidogrel and Aspirin Optimal Dose Usage to Reduce Recurrent Events-Seventh Organization to Assess Strategies in Ischemic Symptoms) trial, which compared double-dose (600 mg day 1;150 mg days 2-7; then 75 mg daily) versus standard-dose (300 mg day 1; then 75 mg daily) clopidogrel in acute coronary syndrome patients...
November 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29093065/low-dose-aspirin-and-risk-of-intracranial-bleeds-an-observational-study-in-uk-general-practice
#12
Lucía Cea Soriano, David Gaist, Montse Soriano-Gabarró, Susan Bromley, Luis A García Rodríguez
OBJECTIVE: To quantify the risk of intracranial bleeds (ICBs) associated with new use of prophylactic low-dose aspirin using a population-based primary care database in the United Kingdom. METHODS: A cohort of new users of low-dose aspirin (75-300 mg; n = 199,079) aged 40-84 years and a 1:1 matched cohort of nonusers of low-dose aspirin at baseline were followed (maximum 14 years, median 5.4 years) to identify incident cases of ICB, with validation by manual review of patient records or linkage to hospitalization data...
November 1, 2017: Neurology
https://www.readbyqxmd.com/read/29090588/decreased-turnover-aspirin-resistance-by-bidaily-aspirin-intake-and-efficient-cytoreduction-in-myeloproliferative-neoplasms
#13
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
https://www.readbyqxmd.com/read/29064757/incidental-pulmonary-embolism-after-coronary-artery-bypass-surgery-long-term-clinical-follow-up
#14
Kyongmin Sarah Beck, Eun Kyung Cho, Mi Hyung Moon, Do-Yeon Kim, Hyun Song, Jung Im Jung
OBJECTIVE: The purpose of this study was to investigate the incidence and natural history of incidentally found and untreated pulmonary embolism (PE) at coronary CT angiography after coronary artery bypass grafting. MATERIALS AND METHODS: We retrospectively reviewed the records of 353 patients consecutively registered between January 1, 2010, and November 11, 2015, who underwent coronary artery bypass grafting followed within 2 weeks by coronary CT angiography. All patients received 100 mg of aspirin and 75 mg of clopidogrel after surgery...
October 24, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29024233/use-of-d-dimer-measurement-to-guide-anticoagulant-treatment-in-recurrent-pregnancy-loss-associated-with-antiphospholipid-syndrome
#15
Shi Hua Bao, Shi Le Sheng, Hong Liao, Qian Zhou, Sophia Twum Frempong, Wei Yan Tu
PROBLEM: To examine whether the level of plasma D-dimer can guide anticoagulant treatment in recurrent pregnancy loss (RPL) associated with antiphospholipid syndrome (APS). METHODS: A total of 1096 RPL women with APS between 2012 and 2015 in a single-center hospital were randomly divided into two groups (group A, 75 mg of low-dose aspirin [LDA] daily; group B, 75 mg of LDA plus 4100 U of low molecular weight heparin [LMWH] subcutaneously daily); 1015 of the total successfully completed the trial...
December 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28938956/effects-of-ticagrelor-versus-clopidogrel-on-platelet-function-in-fibrinolytic-treated-stemi-patients-undergoing-early-pci
#16
RANDOMIZED CONTROLLED TRIAL
Payam Dehghani, Andrea Lavoie, Shahar Lavi, Jennifer J Crawford, Sebastian Harenberg, Rodney H Zimmermann, Jeff Booker, Sheila Kelly, Warren J Cantor, Shamir R Mehta, Akshay Bagai, Shaun G Goodman, Asim N Cheema
OBJECTIVES: Patients undergoing PCI early after fibrinolytic therapy are at high risk for both thrombotic and bleeding complications. We sought to assess the pharmacodynamic effects of ticagrelor versus clopidogrel in the fibrinolytic-treated STEMI patients undergoing early PCI. METHODS AND RESULTS: Patients undergoing PCI within 24 hours of tenecteplase (TNK), aspirin, and clopidogrel for STEMI were randomized to receive additional clopidogrel 300 mg followed by 75 mg daily or ticagrelor 180 mg followed by 90 mg twice daily...
October 2017: American Heart Journal
https://www.readbyqxmd.com/read/28938905/safe-sarpogrelate-anplone-in-femoro-popliteal-artery-intervention-efficacy-study-study-protocol-for-a-randomized-controlled-trial
#17
Sanghyun Ahn, Joongyub Lee, Seung-Kee Min, Jongwon Ha, Sang-Il Min, Song-Yi Kim, Min-Ji Cho, Sungsin Cho
BACKGROUND: Sarpogrelate is expected to reduce restenosis by protecting blood vessels from oxidative stress and vascular endothelial dysfunction as well as by acting as an antiplatelet agent after endovascular treatment (EVT). This trial was designed to compare aspirin plus sustained-release (SR) sarpogrelate with aspirin plus clopidogrel for the prevention of restenosis in patients with femoro-popliteal (FP) peripheral artery disease (PAD) who underwent EVT. METHODS/DESIGN: This is an open label, multicenter, prospective randomized controlled clinical trial...
September 22, 2017: Trials
https://www.readbyqxmd.com/read/28906358/efficacy-evaluation-of-low-dose-aspirin-in-ivf-icsi-patients-evidence-from-13-rcts-a-systematic-review-and-meta-analysis
#18
REVIEW
Liping Wang, Xiaman Huang, Xueli Li, Fang Lv, Xiao He, Yu Pan, Li Wang, Xiaomei Zhang
BACKGROUND: We conducted a systematic review and meta-analysis of existing literature to evaluate the different outcomes of low-dose aspirin on patients undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI), including clinical pregnancy rate, implantation rate, live birth rate, miscarriage rate, fertilization rate, number of oocytes retrieved, and so forth. METHODS: Electronic databases including PubMed, MEDLINE, and Embase were searched between 1997 and March 2016 to identity eligible studies...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28905988/lack-of-bioequivalence-among-low-dose-enteric-coated-aspirin-preparations
#19
Dermot Cox, Desmond Fitzgerald
Low-dose aspirin (75 mg or 81 mg) is considered to be the lowest effective dose for cardiovascular protection, however, the use of enteric preparations has created a source of variability in bioavailability. As part of regulatory requirements we carried out bioequivalence tests for two 75 mg enteric-coated aspirin preparations (Caprin and Protek) using Nu-Seals 75 mg aspirin as the comparator. The primary endpoint was serum thromboxane levels after 14 days of treatment. Protek failed to meet bioequivalence, as it was significantly less effective than Nu-Seals...
September 14, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28882113/new-use-of-low-dose-aspirin-and-risk-of-colorectal-cancer-by-stage-at-diagnosis-a-nested-case-control-study-in-uk-general-practice
#20
Luis A García Rodríguez, Montse Soriano-Gabarró, Susan Bromley, Angel Lanas, Lucía Cea Soriano
BACKGROUND: Evidence from clinical trial populations suggests low-dose aspirin reduces the risk of colorectal cancer (CRC). Part of this reduction in risk might be due to protection against metastatic disease. METHODS: We investigated the risk of CRC among new-users of low-dose aspirin (75-300 mg), including risk by stage at diagnosis. Using The Health Improvement Network, we conducted a cohort study with nested case-control analysis. Two cohorts (N = 170,336 each) aged 40-89 years from 2000 to 2009 and free of cancer were identified: i) new-users of low-dose aspirin, ii) non-users of low-dose aspirin, at start of follow-up, matched by age, sex and previous primary care practitioner visits...
September 7, 2017: BMC Cancer
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