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aspirin response

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https://www.readbyqxmd.com/read/29330312/high-sensitive-c-reactive-protein-and-dual-antiplatelet-in-intracranial-arterial-stenosis
#1
Jiejie Li, Anxin Wang, Xingquan Zhao, Liping Liu, Xia Meng, Jinxi Lin, Jing Jing, Xinying Zou, Yilong Wang, Yongjun Wang
OBJECTIVE: To determine the relationship of high-sensitive C-reactive protein (hsCRP) and the efficacy and safety of dual antiplatelet therapy in patients with and without intracranial arterial stenosis (ICAS) in the Clopidogrel in High-Risk Patients with Acute Non-disabling Cerebrovascular Events (CHANCE) trial. METHODS: A subgroup of 807 patients with both magnetic resonance angiography images and hsCRP measurement was analyzed. Cox proportional hazards models were used to assess the interaction of hsCRP levels with the effects of dual and single antiplatelet therapy...
January 12, 2018: Neurology
https://www.readbyqxmd.com/read/29323423/enteral-feeding-tube-clogging-what-are-the-causes-and-what-are-the-answers-a-bench-top-analysis
#2
Christopher M Garrison
BACKGROUND: Clogged enteral feeding tubes remain a significant barrier to the delivery of nutrition, hydration, and medications to patients who cannot tolerate oral intake. There is limited research that compares the relative efficacy of different methods used to clear a clogged feeding tube. The objectives of this study were to better understand the factors that contribute to enteral feeding tube clogging and to test the efficacy of 3 methods for clearing clogged feeding tubes. METHODS: Three formulations of clogs were artificially created and tested in vitro and composed of various quantities of crushed medication (ie, aspirin) and 0...
January 11, 2018: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/29316620/could-aspirin-and-diets-high-in-fiber-act-synergistically-to-reduce-the-risk-of-colon-cancer-in-humans
#3
REVIEW
Pan Pan, Yi-Wen Huang, Kiyoko Oshima, Martha Yearsley, Jianying Zhang, Jianhua Yu, Mark Arnold, Li-Shu Wang
Early inhibition of inflammation suppresses the carcinogenic process. Aspirin is the most commonly used non-steroid anti-inflammatory drugs (NSAIDs), and it irreversibly inhibits cyclooxygenase-1 and -2 (COX1, COX2). Multiple randomized clinical trials have demonstrated that aspirin offers substantial protection from colon cancer mortality. The lower aspirin doses causing only minimal gastrointestinal disturbance, ideal for long-term use, can achieve only partial and transitory inhibition of COX2. Aspirin's principal metabolite, salicylic acid, is also found in fruits and vegetables that inhibit COX2...
January 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29304392/aspirin-non-responsiveness-in-pregnant-women-at-high-risk-of-pre-eclampsia
#4
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/29297976/platelet-responses-to-pharmacological-and-physiological-interventions-in-middle-aged-men-with-different-habitual-physical-activity-levels
#5
M H Lundberg Slingsby, L Gliemann, M Thrane, N Rytter, J Egelund, M V Chan, P C Armstrong, T D Warner, Y Hellsten
The current guidelines following an acute coronary syndrome recommend dual anti-platelet therapy (aspirin plus a P2Y12 antagonist) alongside lifestyle modifications, including more regular physical activity. It is currently unknown if regular exercise affects the pharmacology of dual anti-platelet therapy. AIM: To explore how exercise-induced improvements in vascular and platelet function affect the efficacy of dual anti-platelet therapy, in a cross-sectional study of men with different physical activity level (training status)...
January 3, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29297735/national-assessment-of-quality-programs-in-emergency-medical-services
#6
Michael Redlener, Patrick Olivieri, George T Loo, Kevin Munjal, Michael T Hilton, Katya Trudeau Potkin, Michael Levy, Jeffrey Rabrich, Michael R Gunderson, Sabina A Braithwaite
OBJECTIVE: This study aims to understand the adoption of clinical quality measurement throughout the United States on an EMS agency level, the features of agencies that do participate in quality measurement, and the level of physician involvement. It also aims to barriers to implementing quality improvement initiatives in EMS. METHODS: A 46-question survey was developed to gather agency level data on current quality improvement practices and measurement. The survey was distributed nationally via State EMS Offices to EMS agencies nation-wide using Surveymonkey©...
January 3, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29282401/recurrent-vitreous-hemorrhage-from-an-optic-nerve-retinal-arterial-macroaneurysm
#7
Jessica F Yang, Kamal Kishore
Objective: To report a case of recurrent vitreous hemorrhage from an optic nerve retinal arterial macroaneurysm (ONRAM) successfully treated with intraoperative endolaser. Patient and Methods: A 92-year-old woman on oral aspirin and warfarin anticoagulation for atrial fibrillation developed three episodes of dense vitreous hemorrhage from an ONRAM. Due to failure of the vitreous hemorrhage to clear spontaneously, a total of three pars plana vitrectomy (PPV) procedures were performed along with a 1...
September 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29282304/type-2-cysteinyl-leukotriene-receptors-drive-il-33-dependent-type-2-immunopathology-and-aspirin-sensitivity
#8
Tao Liu, Nora A Barrett, Yoshihide Kanaoka, Eri Yoshimoto, Denise Garofalo, Haley Cirka, Chunli Feng, Joshua A Boyce
Cysteinyl leukotrienes (cysLTs) facilitate mucosal type 2 immunopathology by incompletely understood mechanisms. Aspirin-exacerbated respiratory disease, a severe asthma subtype, is characterized by exaggerated eosinophilic respiratory inflammation and reactions to aspirin, each involving the marked overproduction of cysLTs. Here we demonstrate that the type 2 cysLT receptor (CysLT2R), which is not targeted by available drugs, is required in two different models to amplify eosinophilic airway inflammation via induced expression of IL-33 by lung epithelial cells...
December 27, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29259703/prostaglandin-e2-ep2-signaling-as-a-node-of-chronic-inflammation-in-the-colon-tumor-microenvironment
#9
REVIEW
Tomohiro Aoki, Shuh Narumiya
Background: Colorectal cancer is the third most common cancer. Involvement of prostaglandin (PG) system in the pathogenesis of colorectal cancer has been suggested from clinical studies demonstrating therapeutic effect of NSAIDs including aspirin or selective COX-2 inhibitors. However, mechanisms on how PG regulates inflammatory responses leading to colorectal cancer development remain obscure. Further, careful attention is needed to use these drugs for a long time because of adverse effects due to non-specific inhibition of physiological PG production in addition to pathological one, making the development of alternatives to aspirin important...
2017: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29234949/curc-mpeg454-a-pegylated-curcumin-derivative-improves-anti-inflammatory-and-antioxidant-activities-a-comparative-study
#10
Fei Cheng, Yuhe Chen, Zhu Zhan, Yu Liu, Peng Hu, Hong Ren, Huadong Tang, Mingli Peng
We previously demonstrated that a PEGylated curcumin (Curc-mPEG454) significantly inhibited cyclooxygenase 2 (COX-2) expression and improved the progression of liver fibrosis. The current study systematically evaluates its anti-inflammatory and antioxidant activities in vitro in a comparative study with curcumin, aspirin, NS-398, and vitamin C. RAW264.7 murine macrophages were pretreated with Curc-mPEG454, curcumin, aspirin, NS-398, or vitamin C at the indicated concentration for 2 h; then, the cells were stimulated with 1 μg/mL lipopolysaccharide (LPS) for 24 h...
December 13, 2017: Inflammation
https://www.readbyqxmd.com/read/29228752/nonsteroidal-anti-inflammatory-drugs-using-and-risk-of-head-and-neck-cancer-a-dose-response-meta-analysis-of-prospective-cohort-studies
#11
Jun Shi, Weidong Leng, Lunhua Zhao, Chenli Xu, Jue Wang, Xiaoli Chen, Yu Wang, Xingchun Peng
Conflicting results identifying the relationship between nonsteroidal anti-inflammatory drugs using and head and neck cancer risk. Therefore, we performed this meta-analysis to clarify and quantitative assessed the relationship between nonsteroidal anti-inflammatory drugs using and head and neck cancer risk. Up to March 2017, 11 original publications were included in this meta-analysis. Our results showed statistically significant association between nonsteroidal anti-inflammatory drugs using and head and neck cancer risk reduction...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227173/changes-in-platelet-function-with-inflammation-in-patients-undergoing-vascular-surgery
#12
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/29194772/comparison-of-multiplate-platelet-function-analyzer-200-and-plateletworks-in-healthy-dogs-treated-with-aspirin-and-clopidogrel
#13
S Saati, A C G Abrams-Ogg, S L Blois, R D Wood
BACKGROUND: Platelet function testing may be warranted to assess response to aspirin and clopidogrel. HYPOTHESIS/OBJECTIVES: To evaluate the effects of aspirin, clopidogrel, or combination therapy using 3 platelet function tests: Multiplate Analyzer (MP), Platelet Function Analyzer-200 (PFA), and Plateletworks (PW). ANIMALS: Six healthy laboratory Beagles. METHODS: Randomized double-blind placebo-controlled study (crossover design)...
November 30, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29193441/therapy-for-antiphospholipid-miscarriages-throwing-the-baby-out-with-the-bathwater
#14
Cecilia Beatrice Chighizola, Yehuda Shoenfeld, Pier Luigi Meroni
PROBLEM: The association of low molecular weight heparin (LMWH) with low-dose aspirin (LDASA) provides the therapeutic cornerstone of obstetric anti-phospholipid syndrome (APS). This combo approach is not effective in all patients, and few women still experience recurrences. METHOD OF STUDY: In an elegant in vitro study, Chiombori Quao and colleagues demonstrated that anti-phospholipid antibodies (aPL) affect the functionality of endometrial endothelial cells interfering with angiogenesis...
November 28, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29192856/management-of-antiplatelet-therapy-in-patients-undergoing-neuroendovascular-procedures
#15
Keri S Kim, Justin F Fraser, Stephen Grupke, Aaron M Cook
Neuroendovascular techniques for treating cerebral aneurysms and other cerebrovascular pathology are increasingly becoming the standard of care. Intraluminal stents, aneurysm coils, and other flow diversion devices typically require concomitant antiplatelet therapy to reduce thromboembolic complications. The variability inherent with the pharmacodynamic response to common antiplatelet agents such as aspirin and clopidogrel complicates optimal selection of antiplatelet agents by clinicians. This review serves to discuss the literature related to antiplatelet use in neuroendovascular procedures and provides recommendations for clinicians on how to approach patients with variable response to antiplatelet agents, particularly clopidogrel...
December 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29179207/reduction-of-nanog-mediates-the-inhibitory-effect-of-aspirin-on-tumor-growth-and-stemness-in-colorectal-cancer
#16
Hefei Wang, Bing Liu, Jing Wang, Jinglin Li, Ying Gong, Sisi Li, Chunli Wang, Bai Cui, Xiaoyuan Xue, Mengying Yang, Wenjun Fan, Zhijie Kang, Muhammad Kamran, Jie Xu, Pengfei Tian, Yuanyuan Luo, Zhijie Hou, Lin Dong, Yanling Ren, Man Li, Qingping Wen, Wei Cheng, Lingzhi Xu, Ling Wang, Quentin Liu
BACKGROUND/AIMS: Cancer stem cells (CSCs) are considered to be responsible for tumor relapse and metastasis, which serve as a potential therapeutic target for cancer. Aspirin has been shown to reduce cancer risk and mortality, particularly in colorectal cancer. However, the CSCs-suppressing effect of aspirin and its relevant mechanisms in colorectal cancer remain unclear. METHODS: CCK8 assay was employed to detect the cell viability. Sphere formation assay, colony formation assay, and ALDH1 assay were performed to identify the effects of aspirin on CSC properties...
November 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29177110/advances-in-the-understanding-and-treatment-of-mitochondrial-fatty-acid-oxidation-disorders
#17
Eric S Goetzman
Purpose of review: This review focuses on advances made in the past three years with regards to understanding the mitochondrial fatty acid oxidation (FAO) pathway, the pathophysiological ramifications of genetic lesions in FAO enzymes, and emerging therapies for FAO disorders. Recent findings: FAO has now been recognized to play a key energetic role in pulmonary surfactant synthesis, T-cell differentiation and memory, and the response of the proximal tubule to kidney injury...
September 2017: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/29157985/evidence-for-autocrine-and-paracrine-regulation-of-allergen-induced-mast-cell-mediator-release-in-the-guinea-pig-airways
#18
Li Yu, Qi Liu, Brendan J Canning
Mast cells play an essential role in immediate type hypersensitivity reactions and in chronic allergic diseases of the airways, including asthma. Mast cell mediator release can be modulated by locally released autacoids and circulating hormones, but surprisingly little is known about the autocrine effects of mediators released upon mast cell activation. We thus set out to characterize the autocrine and paracrine effects of mast cell mediators on mast cell activation in the guinea pig airways. By direct measures of histamine, cysteinyl-leukotriene and thromboxane release and with studies of allergen-evoked contractions of airway smooth muscle, we describe a complex interplay amongst these autacoids...
November 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29139042/obesity-and-altered-aspirin-pharmacology
#19
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/29135091/remarkably-higher-efficacy-and-a-wider-safety-window-for-nonfrontline-over-first-line-drug-combinations-in-the-adenocarcinoma-colo-320dm-cell-line
#20
Elsa N Garza-Trevino, Martha S Rodriguez-Gonzalez, Paulina Delgado Gonzalez, Yesenia G Alonso-Cruz, Yesenia G Alonso-Cruz, Adolfo Soto-Dominguez, Juan F Gonzalez Guerrero, Yanko Castro-Govea, Emiliano Michel Sanchez, Salvador Said Fernandez, Herminia G Martinez-Rodriguez
PURPOSE: To determine in vitro, the efficacy and safety window of not-front-line and first-line anti-colorectal (CRC) drug combinations. METHODS: The adenocarcinoma cell line Colo 320DM and normal human mesenchymal stem cells derived from adipose tissue were used respectively to determine the anti-CRC efficacy (% of Colo 320DM cell death [CD]) and safety window [SW] - % Colo 320DM percent cancer death (PCD)/% of mesenchymal stem cell's death) of drug combinations, using the adenosine triphosphate-based chemotherapy response assay (ATP-CRA)...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
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