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https://www.readbyqxmd.com/read/28096086/platelets-activate-a-pathogenic-response-to-blood-stage-plasmodium-infection-but-not-a-protective-immune-response
#1
Irene Gramaglia, Joyce Velez, Valery Combes, Georges E R Grau, Melanie Wree, Henri C van der Heyde
Clinical studies indicate that thrombocytopenia correlates with the development of severe falciparum malaria, suggesting that platelets either contribute to control of parasite replication possibly as innate parasite killer cells or function in eliciting pathogenesis. Removal of platelets by anti-CD41 mAb treatment, platelet inhibition by aspirin, and adoptive transfer of WT platelets to CD40-KO mice, which do not control parasite replication, resulted in similar parasitemia compared with control mice. Human platelets at a physiological ratio of 1 platelet to 9 RBCs did not inhibit the in vitro development or replication of blood-stage P...
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28095380/polycythemia-vera-management-and-challenges-in-the-community-health-setting
#2
Aaron T Gerds, Kim-Hien Dao
Patients with polycythemia vera (PV) experience shortened survival, increased risk of thromboembolic and hemorrhagic events, and burdensome symptoms. For all patients with PV, treatment with aspirin and hematocrit control with phlebotomy are recommended. In addition, patients with high-risk status or poor hematocrit control benefit from cytoreductive therapy with hydroxyurea, although approximately 1 in 4 patients develops resistance or intolerance. For patients who are resistant to or intolerant of hydroxyurea, studies have shown that ruxolitinib, a Janus kinase 1/2 inhibitor, provides hematocrit control, reduces spleen size, normalizes blood counts, and improves PV-related symptoms...
January 18, 2017: Oncology
https://www.readbyqxmd.com/read/28089180/enteric-coating-and-aspirin%C3%A2-nonresponsiveness-in-patients%C3%A2-with-type%C3%A2-2%C3%A2-diabetes-mellitus
#3
Deepak L Bhatt, Tilo Grosser, Jing-Fei Dong, Douglas Logan, Walter Jeske, Dominick J Angiolillo, Andrew L Frelinger, Lanyu Lei, Juan Liang, Jason E Moore, Byron Cryer, Upendra Marathi
BACKGROUND: A limitation of aspirin is that some patients, particularly those with diabetes, may not have an optimal antiplatelet effect. OBJECTIVES: The goal of this study was to determine if oral bioavailability mediates nonresponsiveness. METHODS: The rate and extent of serum thromboxane generation and aspirin pharmacokinetics were measured in 40 patients with diabetes in a randomized, single-blind, triple-crossover study. Patients were exposed to three 325-mg aspirin formulations: plain aspirin, PL2200 (a modified-release lipid-based aspirin), and a delayed-release enteric-coated (EC) aspirin...
January 5, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28087343/calcium-remodeling-in-colorectal-cancer
#4
REVIEW
Carlos Villalobos, Diego Sobradillo, Miriam Hernández-Morales, Lucía Núñez
: Colorectal cancer (CRC) is the third most frequent form of cancer and the fourth leading cause of cancer-related death in the world. Basic and clinical data indicate that aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs) may prevent colon cancer but mechanisms remain unknown. Aspirin metabolite salicylate and other NSAIDs may inhibit tumor cell growth acting on store-operated Ca(2+) entry (SOCE), suggesting an important role for this pathway in CRC. Consistently, SOCE is emerging as a novel player in different forms of cancer, including CRC...
January 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28079976/maresin-1-induces-a-novel-pro-resolving-phenotype-in-human-platelets
#5
Katie L Lannan, Sherry L Spinelli, Neil Blumberg, Richard P Phipps
BACKGROUND: Antiplatelet therapy is a cornerstone of modern medical practice and is routinely employed to reduce the likelihood of myocardial infarction, thrombosis, and stroke. However, current antiplatelet therapies, such as aspirin, often have adverse side effects, including increased risk of bleeding, and some patients are relatively "aspirin-resistant". Platelets are intimately involved in hemostasis and inflammation, and clinical consequences are associated with excessive or insufficient platelet activation...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28076455/decreased-platelet-responsiveness-to-clopidogrel-correlates-with-cyp2c19-and-pon1-polymorphisms-in-atherosclerotic-patients
#6
J F M Marchini, M R Pinto, G C Novaes, A V Badran, R B Pavão, G L Figueiredo, I M Lago, M O Lima-Filho, D C Lemos, M Tonani, C M Antloga, L Oliveira, J C Lorenzi, J A Marin-Neto
Clopidogrel and aspirin are the most commonly used medications worldwide for dual antiplatelet therapy after percutaneous coronary intervention. However, clopidogrel hyporesponsiveness related to gene polymorphisms is a concern. Populations with higher degrees of genetic admixture may have increased prevalence of clopidogrel hyporesponsiveness. To assess this, we genotyped CYP2C19, ABCB1, and PON1 in 187 patients who underwent percutaneous coronary intervention. Race was self-defined by patients. We also performed light transmission aggregometry with adenosine diphosphate (ADP) and arachidonic acid during dual antiplatelet therapy...
January 9, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28071659/acg-clinical-guideline-treatment-of-helicobacter-pylori-infection
#7
William D Chey, Grigorios I Leontiadis, Colin W Howden, Steven F Moss
Helicobacter pylori (H. pylori) infection is a common worldwide infection that is an important cause of peptic ulcer disease and gastric cancer. H. pylori may also have a role in uninvestigated and functional dyspepsia, ulcer risk in patients taking low-dose aspirin or starting therapy with a non-steroidal anti-inflammatory medication, unexplained iron deficiency anemia, and idiopathic thrombocytopenic purpura. While choosing a treatment regimen for H. pylori, patients should be asked about previous antibiotic exposure and this information should be incorporated into the decision-making process...
January 10, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28068952/interaction-among-cox-2-p2y1-and-gpiiia-gene-variants-is-associated-with-aspirin-resistance-and-early-neurological-deterioration-in-chinese-stroke-patients
#8
Xingyang Yi, Chun Wang, Qiang Zhou, Jing Lin
BACKGROUND: The effect of genetic variants on aspirin resistance (AR) remains controversial. We sought to assess the association of genetic variants with AR and early clinical outcomes in patients with acute ischemic stroke (IS). METHODS: A total of 850 acute IS patients were consecutively enrolled. Platelet aggregation was measured before and after a 7-10 day aspirin treatment. The sequences of 14 variants of COX-1, COX-2, GPIb, GPIIIa, P2Y1 and P2Y12 were determined using matrix-assisted laser desorption/ionization time of flight mass spectrometry...
January 9, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28068560/effect-of-sarpogrelate-a-selective-5-ht2a-receptor-antagonist-on-characteristics-of-coronary-artery-disease-in-patients-with-type-2-diabetes
#9
Dong-Hwa Lee, Eun Ju Chun, Jee Hye Hur, Se Hee Min, Jie-Eun Lee, Tae Jung Oh, Kyoung Min Kim, Hak Chul Jang, Seung Jin Han, Doo Kyoung Kang, Hae Jin Kim, Soo Lim
BACKGROUND AND AIMS: Sarpogrelate, a 5-hydroxytryptamine type 2A antagonist, is a potential antiplatelet agent. We performed a randomized study to evaluate the effect of sarpogrelate on vascular health in Korean patients with diabetes. METHODS: Forty diabetic patients aged 58.6 ± 6.8 years with 10-75% coronary artery stenosis, as assessed by coronary computed tomography angiography, were randomly assigned to sarpogrelate 300 mg/day plus aspirin 100 mg/day (SPG + ASA group) or aspirin 100 mg/day alone (ASA group) for 6 months...
December 10, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28057599/aspirin-plus-sorafenib-potentiates-cisplatin-cytotoxicity-in-resistant-head-and-neck-cancer-cells-through-xct-inhibition
#10
Jong-Lyel Roh, Eun Hye Kim, Hyejin Jang, Daiha Shin
The nonsteroidal anti-inflammatory drug aspirin and the multikinase inhibitor sorafenib have both shown experimental and clinical anticancer activities. The present study investigated whether aspirin and sorafenib synergize to potentiate cisplatin treatment in resistant head and neck cancer (HNC) cells. The effects of aspirin, sorafenib and cisplatin, and combinations thereof were assessed by measuring cell viability, death, glutathione (GSH) and reactive oxygen species (ROS) levels, protein and mRNA expression, genetic inhibition and overexpression of cystine-glutamate antiporter (xCT) and tumor xenograft mouse models...
January 3, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28057098/-association-of-abcb1-gene-polymorphisms-with-aspirin-resistance-in-patients-with-ischemic-stroke
#11
Z Y Wang, Y Wang, A H Sui, Y Dong
Objective: To investigate the relationship of single nucleotide polymorphisms of Multi-drug resistance (ABCB1/MDR1) gene with Aspirin resistance (AR) in patients with ischemic stroke. Methods: Three hundred ischemic stroke patients from Department of Neurology, Affiliated Hospital of Qingdao University were collected from September 2014 to May 2016. According to the results of Thromboelastogram (TEG), the patients were divided into aspirin resistance (AR) group and aspirin sensitive (AS) group. The genotypes of ABCB1 gene (C1236T, G2677T/A, C3435T) were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and direct sequencing...
December 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28056332/-aspirin-use-in-patients-with-atherosclerotic-cardiovascular-disease-the-2016-chinese-expert-consensus-statement
#12
(no author information available yet)
Atherosclerotic cardiovascular disease (ASCVD) is the leading cause of death and has the largest disease burden in China. Aspirin is the most promising agent for the prevention of ASCVD in such a large population for its easy availability and relative effectiveness, although its use in primary prevention is still a subject of debate. The joint task force has reviewed the current evidence of aspirin use in healthy population and in patients with stable coronary artery disease, acute coronary syndrome, transient ischemic attack, stroke and peripheral artery disease...
January 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28054898/pump-thrombosis-following-heartmate-ii-left-ventricular-assist-device-implantation-in-a-patient-with-aspirin-and-plavix-resistance
#13
Ali Ghodsizad, A Badiye, M Zeriouh, W Pae, M M Koerner, M Loebe
Despite advances in pump technology, thromboembolic events and pump thrombosis are potentially life-threatening complications in patients with continuous flow ventricular assist devices. Here we describe a patient with pump thrombosis following LVAD HeartMate II implantation presenting with Aspirin and Plavix resistance and signs of acute hemolysis as manifested by high LDH, changing pump power, pulse index and reduced pump flows.
14, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/28033561/post-pregnancy-aspirin-resistance-appears-not-to-be-related-with-recurrent-hypertensive-disorders-of-pregnancy
#14
Carolien N H Abheiden, Wessel W Fuijkschot, Arda Arduç, Jeske J K van Diemen, Ankie M Harmsze, Marjon A de Boer, Abel Thijs, Johanna I P de Vries
OBJECTIVE: The FRUIT-RCT concluded that low-molecular-weight heparin added to aspirin compared to treatment with aspirin alone is beneficial in the prevention of early-onset hypertensive disorders of pregnancy (HD) in women with inheritable thrombophilia and prior HD and/or a small-for-gestational age (SGA) infant leading to delivery before 34 weeks gestation. The aim of this study is to answer the question whether aspirin resistance is associated with recurrent HD. STUDY DESIGN: Women with and without recurrent HD matched for age, study arm, and chronic hypertension were invited for this follow-up study 6-16 years after they participated in the FRUIT-RCT...
December 21, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28028508/effects-of-aspirin-as-an-anti-inflammatory-drug-on-azole-resistant-candida-glabrata-in-vitro
#15
Sanaz Goodarzi, Seyyed Amin Ayatollahi Mousavi, Somayeh Sharifynia, Azar Berahmeh, Sassan Rezaie
No abstract text is available yet for this article.
November 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28025961/prevalence-of-aspirin-resistance-in-patients-with-type-ii-diabetes-a-descriptive-analytical-study%C3%A2
#16
Rahimeh Eskandarian, Mohammadreza Razavi, Abolfazal Fattah, Kamran Ghods, Mohammad Forozeshfard
BACKGROUND: Aspirin resistance is one of the most important factors for arterial thrombotic events in diabetic patients. This study aimed to evaluate aspirin resistance in diabetic patients. METHODS: In this cross-sectional study, 180 patients who received 80 mg of aspirin daily for at least 10 days were studied, and their urinary 11-DH-TXB2 was measured. Those with 11-dehydro-thromboxane B2 above 1,500 pg/mg creatinine were considered aspirin resistant. Data with significance level of 5% were analyzed in SPSS-16...
December 27, 2016: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28005558/residual-thromboxane-activity-and-oxidative-stress-influence-on-mortality-in-patients-with-stable-coronary-artery-disease
#17
Anupama Vasudevan, Teodoro Bottiglieri, Kristen M Tecson, Mohanakrishnan Sathyamoorthy, Jeffrey M Schussler, Carlos E Velasco, Luis R Lopez, Caren Swift, Margarita Peterson, Jeanna Bennett-Firmin, Raphael Schiffmann, Peter A McCullough
BACKGROUND: Aspirin use is effective in the prevention of cardiovascular disease; however, not all patients are equally responsive to aspirin. Oxidative stress reflected by F2-isoprostane [8-iso-prostaglandin-F2α (8-IsoPGF2α)] is a potential mechanism of failure of aspirin to adequately inhibit cyclooxygenase-1. The objective was to examine the relation between all-cause mortality and the concentrations of urinary 11-dehydro thromboxane B2 (11dhTxB2) and 8-IsoPGF2α in patients with stable coronary artery disease (CAD)...
December 21, 2016: Coronary Artery Disease
https://www.readbyqxmd.com/read/28002874/high-serum-alanine-aminotransferase-is-associated-with-the-risk-of-colorectal-adenoma-in-korean-men
#18
Chang Mo Moon, Kyung Eun Yun, Seungho Ryu, Yoosoo Chang, Dong Il Park
BACKGROUND AND AIM: An elevated alanine aminotransferase (ALT) is frequently observed in subjects with metabolic syndrome, which is associated with the risk of colorectal adenoma (CRA). However, the relationship between ALT and CRA remains unclear. Therefore, we aimed to investigate whether high serum ALT is associated with the risk of CRA in a metabolically healthy population. METHODS: We conducted this cross-sectional study in 27,717 asymptomatic Korean adults who underwent a health checkup...
December 21, 2016: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27999568/potential-antifungal-targets-against-a-candida-biofilm-based-on-an-enzyme-in-the-arachidonic-acid-cascade-a-review
#19
REVIEW
Xinning Liu, Decai Wang, Cuixiang Yu, Tao Li, Jianqiao Liu, Shujuan Sun
Candida is an important opportunistic fungal pathogen, especially in biofilm associated infections. The formation of a Candida biofilm can decrease Candida sensitivity to antifungal drugs and cause drug resistance. Although many effective antifungal drugs are available, their applications are limited due to their high toxicity and cost. Seeking new antifungal agents that are effective against biofilm-associated infection is an urgent need. Many research efforts are underway, and some progress has been made in this field...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27970123/tct-8-impact-of-aspirin-resistance-on-outcomes-after-coronary-events
#20
Christine Chung, Ajay Kirtane, Claire Litherland, Bernhard Witzenbichler, Giora Weisz, Thomas Stuckey, Bruce Brodie, Michael Rinaldi, Franz-Josef Neumann, D Christopher Metzger, Timothy Henry, David Cox, Peter L Duffy, Ernest Mazzaferri, Roxana Mehran, Gregg Stone
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
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