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Anti-platelet

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https://www.readbyqxmd.com/read/29051102/isolation-structural-characterization-and-bioactivities-of-naturally-occurring-polysaccharide-polyphenolic-conjugates-from-medicinal-plants-a-reivew
#1
REVIEW
Jun Liu, Ruyu Bai, Yunpeng Liu, Xin Zhang, Juan Kan, Changhai Jin
In recent years, several medicinal plants have been demonstrated as valuable resources of naturally occurring polysaccharide-polyphenolic conjugates. For the first time, this article introduces recent advances of polysaccharide-polyphenolic conjugates isolated from different medicinal plants. The isolation, purification, structural characterization and biological activities of polysaccharide-polyphenolic conjugates are introduced in details. In general, polysaccharide-polyphenolic conjugates can be isolated by hot water or alkaline extraction followed by purification through anion exchange chromatography or gel filtration chromatography...
October 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29051021/anti-pdgfra-antibodies-predict-for-response-to-nilotinib-in-steroid-refractory-dependent-cgvhd
#2
George L Chen, Paul A Carpenter, Raewyn Broady, Tara K Gregory, Laura J Johnston, Barry E Storer, Jan H Beumer, Jingxin Qiu, Kiara Cerda, Ryan Le, Joanne M Otani, Hong Liu, Maureen A Ross, Sally Arai, Mary E D Flowers, Philip L McCarthy, David B Miklos
Imatinib has clinical activity in chronic graft-versus-host disease (cGvHD), a significant complication of allogeneic hematopoietic cell transplant. Nilotinib is a tyrosine kinase inhibitor that targets the same receptors as imatinib but with different affinities. We tested the hypothesis that nilotinib is safe and has clinical activity in cGvHD. 33 participants were enrolled in a phase 1/2 dose escalation and dose extension clinical trial of nilotinib for the treatment of steroid refractory or dependent cGvHD (ClinicalTrials...
October 16, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29050464/anti-platelet-effects-of-epigallocatechin-3-gallate-in-addition-to-the-concomitant-aspirin-clopidogrel-or-ticagrelor-treatment
#3
Hyung Joon Joo, Ji-Young Park, Soon Jun Hong, Kyoung-Ah Kim, Seung Hoon Lee, Jae-Young Cho, Jae Hyoung Park, Cheol Woong Yu, Do-Sun Lim
Background/Aims: Although epigallocatechin-3-gallate (EGCG), which is found in high contents in the dried leaves of green tea, has been reported to have an anti-platelet effect, synergistic effects of EGCG in addition to current anti-platelet medications remains to be elucidated. Methods: Blood samples were obtained from 40 participants who took aspirin (ASA, n = 10), clopidogrel (CPD, n = 10), ticagrelor (TCG, n = 10) and no anti-platelet medication (Control, n = 10)...
October 19, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29046918/flow-diverter-treatment-of-cerebral-blister-aneurysms
#4
Russell Cerejo, Mark Bain, Seby John, Julian Hardman, Nina Moore, M Shazam Hussain, Gabor Toth
PURPOSE: Blood blister-like aneurysms (BBA) are small, friable, broad-based aneurysms that represent high risk for rerupture. Treatment of BBA is challenging, and may include surgical wrapping, clipping, multiple overlapping stents, and/or coiling. Flow diversion is a rapidly evolving treatment strategy for intracranial aneurysms, but the evidence for its use in cases of BBA is scarce. METHODS: A retrospective review of flow-diverter-treated, ruptured BBA cases at our tertiary care institution was undertaken...
October 18, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29045015/the-small-molecule-mertk-inhibitor-unc2025-decreases-platelet-activation-and-prevents-thrombosis
#5
Brian R Branchford, Timothy J Stalker, Luke Law, Gilbert Acevedo, Susan Sather, Christine Brzezinski, Katina M Wilson, Katherine Minson, Alisa B Lee-Sherick, Pavel Davizon-Castillo, Christopher Ng, Weihe Zhang, Keith B Neeves, Steven R Lentz, Xiaodong Wang, Stephen V Frye, H Shelton Earp, Deborah DeRyckere, Lawrence F Brass, Douglas K Graham, Jorge A Di Paola
BACKGROUND: Gas6 signals through the TAM (TYRO-3, AXL, MERTK) receptor family mediating platelet activation and thrombus formation via activation of the aggregate-stabilizing αIIb β3 integrin. OBJECTIVE: Here we describe anti-thrombotic effects mediated by UNC2025, a small molecule MERTK tyrosine kinase inhibitor. METHODS: MERTK phosphorylation and downstream signaling were assessed by immunoblot. Light transmission aggregometry, flow cytometry, and microfluidic analysis were used to evaluate the impact of MERTK inhibition on platelet activation and stability of aggregate formation in vitro...
October 17, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29044008/analysis-of-the-effect-of-paclitaxel-eluting-stents-and-paclitaxel-eluting-balloon-in-the-treatment-of-in-stent-restenosis
#6
Jiangtao Cheng, Chuanyu Gao, Yuhao Liu, Zhongmin Wang, Xiaohui Zheng, Datun Qi
To compare and analyze the effect and the safety of the paclitaxel-eluting stents and paclitaxel-eluting balloon in the treatment for in-stent rest enosis. 120 cases, who had been undergone percutaneous coronary intervention (PCI) in the Department of Cardiology of Henan Provincial People's Hospital from January 2012 to January 2014 were selected. All the patients were randomly treated with paclitaxel-eluting balloon or paclitaxel-eluting stents. The former were divided into different groups that named group A and the later group B...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29039316/in-vivo-anti-inflammatory-and-anti-platelet-aggregation-activities-of-longissiminone-a-isolated-from-usnea-longissima
#7
- Azizuddin, Saima Imran, Muhammad Iqbal Choudhary
Secondary metabolite, longissiminone A (1) was isolated from a lichen, Usnea longissima. It was screened for its' in vivo anti-inflammatroy and anti-platelet aggregation activities. Compound 1 showed moderate in vivo anti-inflammatory activity as well as moderately active against the aggregation induced by arachidonic acid at different doses.
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29027360/preparation-of-hydrophilic-blood-compatible-polypropylene-pluronics-f127-films
#8
Mahsa Hakani, Vahid Haddadi-Asl, Seyed Shahrooz Zargarian, Mohamad Hossein Moghadasi
In order to improve surface hydrophilicity, blood compatibility and cell-anti adhesion of Polypropylene (PP) film, PPO-PEO-PPO used as macromolecular surface modifier through physical blending. Surface properties of blended PP/PF127 samples were investigated by attenuated total reflection infrared spectroscopy (ATR-FTIR) and water contact angle (WCA) measurements. Results demonstrated that pluronic F127 migrated to the surface. Thus, mechanical properties of blended PP/PF127 samples with the aim of the revealing the effects of the presence of modifier in the bulk were investigated through Differential Scanning Calorimetry (DSC), X-ray diffraction (XRD) and tensile tests...
October 13, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29027131/selective-bet-protein-inhibition-with-apabetalone-and-cardiovascular-events-a-pooled-analysis-of-trials-in-patients-with-coronary-artery-disease
#9
Stephen J Nicholls, Kausik K Ray, Jan O Johansson, Alan Gordon, Michael Sweeney, Chris Halliday, Ewelina Kulikowski, Norman Wong, Susan W Kim, Gregory G Schwartz
BACKGROUND: Inhibition of bromodomain and extra-terminal (BET) proteins can modulate lipoprotein and inflammatory factors that mediate atherosclerosis. The impact of the BET inhibitor, apabetalone, on cardiovascular events is unknown. OBJECTIVE: Our objective was to investigate the impact of apabetalone on cardiovascular event rates in a pooled analysis of clinical studies in patients with established coronary artery disease. METHODS: We conducted a pooled analysis of patients (n = 798) with coronary artery disease who participated in clinical trials (ASSERT, ASSURE, SUSTAIN) that evaluated the impact of 3-6 months of treatment with apabetalone on lipid parameters and coronary atherosclerosis...
October 12, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/29026706/development-of-novel-drug-eluting-stents-for-acute-myocardial-infarction
#10
REVIEW
Doo Sun Sim, Myung Ho Jeong
Delayed arterial healing at culprit sites after drug-eluting stent (DES) placement for acute myocardial infarction (AMI) is associated with increased risk of late stent thrombosis. The Korea Acute Myocardial Infarction Registry was established in commemoration of the 50(th) anniversary of Korea Circulation Society. Between November 2005 and December 2016, more than 62,000 patients were registered from 50 primary percutaneous coronary intervention (PCI) centers in Korea. DES in AMI may be safe and effective, however, there is concern about increased stent thrombosis after DES implantation in AMI patients, requiring longer-term dual anti-platelet therapy to reduce the risk of late stent thrombosis...
September 2017: Chonnam Medical Journal
https://www.readbyqxmd.com/read/29020675/increased-platelet-monocyte-interaction-in-stable-copd-in-the-absence-of-platelet-hyper-reactivity
#11
Floor E Aleva, Godfrey Temba, Quirijn de Mast, Sami O Simons, Philip G de Groot, Yvonne F Heijdra, André J A M van der Ven
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is well known for its cardiovascular co-morbidities. Increased platelet-monocyte interaction is found in COPD and may reflect altered platelet function and a potential role for anti-platelet therapy. OBJECTIVES: The objectives were to investigate platelet-monocyte interaction, platelet activation and reactivity and plasmatic coagulation in stable COPD. METHODS: Platelet-monocyte interaction and platelet activation were determined by flow cytometry in 30 stable COPD patients and 25 controls...
October 12, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29020490/impact-of-ticagrelor-on-p2y1-and-p2y12-localization-and-on-cholesterol-levels-in-platelet-plasma-membrane
#12
Vahideh Rabani, Damien Montange, Nicolas Meneveau, Siamak Davani
Ticagrelor is an antiplatelet agent that inhibits platelet activation via P2Y12 antagonism. There are several studies showing that P2Y12 needs lipid rafts to be activated, but there are few data about how ticagrelor impacts lipid raft organization. Therefore, we aimed to investigate how ticagrelor could impact the distribution of cholesterol and consequently alter the organization of lipid rafts on platelet plasma membranes. We identified cholesterol-enriched raft fractions in platelet membranes by quantification of their cholesterol levels...
October 11, 2017: Platelets
https://www.readbyqxmd.com/read/28986058/impact-of-switching-to-polypill-based-therapy-by-baseline-potency-of-medication-post-hoc-analysis-of-the-space-collaboration-dataset
#13
Ruth Webster, Chris Bullen, Anushka Patel, Vanessa Selak, Sandrine Stepien, Simon Thom, Anthony Rodgers
BACKGROUND: Fixed dose combinations of cardiovascular therapy ('polypills') have now been launched in several dozen countries. There is considerable clinical interest in the effects of switching to polypill-based care from typical current treatment regimens, especially if polypills contain components at sub-maximal dosage. METHODS: The SPACE Collaboration includes three trials of polypill based care vs usual care in patients with established CVD or at high calculated risk...
September 20, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28980279/secondary-prevention-of-coronary-heart-disease-in-elderly-population-of-turkey-a-subgroup-analysis-of-elderturk-study
#14
Salih Kilic, Mutlu Çagan Sümerkan, Volkan Emren, Lütfü Bekar, Sinan Çersit, Elif Tunç, Gülay Gök, Emine Altuntas, Uğur Canpolat, Umit Yasar Sinan, Namık Özmen, Mehdi Zoghi
BACKGROUND: Secondary prevention plays an important role after acute coronary event due to high risk of adverse events in elderly. In present study we aimed to evaluate the lifestyle, management of risk factors and medical treatment for secondary protection in elderly patients with known coronary heart disease (CHD). METHODS: ELDERTURK is a non-interventional, multi-centered, observational study, which included total of 5694 elderly patients (> 65 years) from 50 centers in Turkey...
October 5, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28966689/investigation-of-standardized-administration-of-anti-platelet-drugs-and-its-effect-on-the-prognosis-of-patients-with-coronary-heart-disease
#15
Chao Ding, Jianhua Zhang, Rongcheng Li, Jiacai Wang, Yongcang Hu, Yanyan Chen, Xiannan Li, Yan Xu
The aim of the present study was to explore the effect of adherence to standardized administration of anti-platelet drugs on the prognosis of patients with coronary heart disease. A total of 144 patients newly diagnosed with coronary heart disease at Lu'an Shili Hospital of Anhui Province (Lu'an, China) between June 2010 and June 2012 were followed up. Kaplan-Meier curves and the Cox regression model were used to evaluate the effects of standardized administration of anti-platelet drugs on primary and secondary end-point events...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28955510/usefulness-of-the-pipeline-embolic-device-for-large-and-giant-carotid-cavernous-aneurysms
#16
Shigeru Miyachi, Ryo Hiramatsu, Hiroyuki Ohnishi, Ryokichi Yagi, Toshihiko Kuroiwa
PURPOSE: Conventional coil embolization for large carotid cavernous aneurysms (CCAs) has limited utility due to its inability to prevent recurrences and reduce mass effect. Trapping of the parent artery may have a risk of ischemic complications due to intracranial perfusion disorders. We successfully treated 24 patients with large CCAs using a flow diverter (Pipeline™ embolic device: PED), and this report discusses the safety and efficacy of this method. MATERIALS AND METHODS: Twenty four patients (23 females, mean age 71...
September 2017: Neurointervention
https://www.readbyqxmd.com/read/28952016/the-impact-of-irreproducibility-and-competing-protection-from-p2y12-antagonists-on-the-discovery-of-cardioprotective-interventions
#17
REVIEW
Michael V Cohen, James M Downey
Scientists and clinicians have been concerned by the lack of a clinically suitable strategy for cardioprotection in patients with acute myocardial infarction despite decades of intensive pre-clinical investigations and a surprising number of clinical trials based on those observations which have uniformly been disappointing. However, it would be a mistake to abandon this search. Rather it would be useful to examine these past efforts and determine reasons for the multiple failures. It appears that earlier clinical trials were often based on results from a single experimental laboratory, thus minimizing the importance of establishing reproducibility in multiple laboratories by multiple scientists and in multiple models...
September 26, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28951306/anti-platelet-aggregation-activity-of-two-novel-acidic-asp49-phospholipases-a2-from-bothrops-brazili-snake-venom
#18
Juliana C Sobrinho, Anderson M Kayano, Rodrigo Simões-Silva, Jorge J Alfonso, Ana F Gomez, Maria C Vega Gomez, Fernando B Zanchi, Laura A Moura, Vivian R Souza, André L Fuly, Eliandre de Oliveira, Saulo L da Silva, José R Almeida, Juliana P Zuliani, Andreimar M Soares
Phospholipases A2 (PLA2s) are important enzymes present in snake venoms and are related to a wide spectrum of pharmacological effects, however the toxic potential and therapeutic effects of acidic isoforms have not been fully explored and understood. Due to this, the present study describes the isolation and biochemical characterization of two new acidic Asp49-PLA2s from Bothrops brazili snake venom, named Braziliase-I and Braziliase-II. The venom was fractionated in three chromatographic steps: ion exchange, hydrophobic interaction and reversed phase...
September 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28949353/anticancer-effects-of-ginsenoside-rk3-on-non-small-cell-lung-cancer-cells-in-vitro-and-in-vivo
#19
Zhiguang Duan, Jianjun Deng, Yangfang Dong, Chenhui Zhu, Weina Li, Daidi Fan
Ginsenoside Rk3 (Rk3) is present in the roots of processed Panax notoginseng herbs and it exerts anti-platelet aggregation, pro-immunogenic and cardioprotective effects. However, little is known regarding the anticancer activities of this compound, especially in lung cancer. This study was designed to investigate the anticancer effects of Rk3 on non-small cell lung cancer (NSCLC) cells and in an H460 xenograft tumor model. Our results showed that Rk3 reduced cell viability, inhibited both cell proliferation and colony formation, and induced G1 phase cell cycle arrest by downregulating the expression of cyclin D1 and CDK4 and upregulating the expression of P21...
September 26, 2017: Food & Function
https://www.readbyqxmd.com/read/28948741/-anti-platelet-adhesive-effect-and-mechanisms-of-xueshuantong-capsules-under-flow-conditions
#20
Shu-Xian Han, Ying Chen, Qian Zhang, Bing Han, Yi-Meng Ge, Yan-Hua Xiang, Fu-Long Liao, Yun You
To investigate the anti-platelet adhesive effect and possible mechanisms of Xueshuantong capsule (XST) under flow conditions. Human umbilical vein endothelial cells (HUVECs) and human platelets were employed as experimental materials, and TNF-α (20 μg•L⁻¹) was used to establish vascular endothelial cell injury models. In vivo flow conditions were simulated under controlled shear stress of 0.1 Pa and 0.9 Pa by Bioflux1000 assays accordingly. Anti-platelet adhesive effects of XST at 0.3 g•L⁻¹ were dynamically monitored by microscopic time-lapse photography...
January 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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