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https://www.readbyqxmd.com/read/28072768/effect-of-low-dose-aspirin-use-on-survival-of-patients-with-gastrointestinal-malignancies-an-observational-study
#1
M A Frouws, E Bastiaannet, R E Langley, W K Chia, M P P van Herk-Sukel, V E P P Lemmens, H Putter, H H Hartgrink, B A Bonsing, C J H Van de Velde, J E A Portielje, G J Liefers
BACKGROUND: Previous studies suggested a relationship between aspirin use and mortality reduction. The mechanism for the effect of aspirin on cancer outcomes remains unclear. The aim of this study was to evaluate aspirin use and survival in patients with gastrointestinal tract cancer. METHODS: Patients with gastrointestinal tract cancer diagnosed between 1998 and 2011 were included. The population-based Eindhoven Cancer Registry was linked to drug-dispensing data from the PHARMO Database Network...
January 10, 2017: British Journal of Cancer
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
#2
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/28067282/gastroprotective-6-gingerol-aspirinate-as-a-novel-chemopreventive-prodrug-of-aspirin-for-colon-cancer
#3
Yingdong Zhu, Fang Wang, Yantao Zhao, Pei Wang, Shengmin Sang
A growing body of research suggests daily low-dose aspirin (ASA) reduces heart diseases and colorectal cancers. However, the major limitation to the use of aspirin is its side effect to cause ulceration and bleeding in the gastrointestinal tract. Preclinical studies have shown that ginger constituents ameliorate ASA-induced gastric ulceration. We here report the design and synthesis of a novel prodrug of aspirin, [6]-gingerol aspirinate (GAS). Our data show that GAS exerts enhanced anti-cancer properties in vitro and superior gastroprotective effects in mice...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28051316/phytochemical-investigations-of-three-rhodocodon-hyacinthaceae-sensu-apg-ii-species
#4
Sianne Schwikkard, Alaa Alqahtani, Walter Knirsch, Wolfgang Wetschnig, Andrius Jaksevicius, Elizabeth I Opara, Moses K Langat, Jackie L Andriantiana, Dulcie A Mulholland
The genus Rhodocodon (Hyacinthaceae sensu APG II) is endemic to Madagascar, and its phytochemistry has not been described previously. The phytochemistry of three species in this genus has been investigated, and eight compounds, including three bufadienolides (compounds 1, 4, and 5), a norlignan (2), and four homoisoflavonoids (compounds 3 and 6-8), have been isolated and identified. Compounds 1-3 and 6-8 have not been described previously. The COX-2 inhibitory activity of compound 6 and compound 7 acetate (compound 7A) was investigated on isolated colorectal cancer cells...
January 4, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28019050/electrocardiographic-left-ventricular-hypertrophy-predicts-atrial-fibrillation-independent-of-left-ventricular-mass
#5
Nikhil Patel, Wesley T O'Neal, S Patrick Whalen, Elsayed Z Soliman
BACKGROUND: Although left ventricular hypertrophy (LVH) detected by electrocardiography (ECG-LVH) and echocardiography (echo-LVH) independently predict cardiovascular disease events, it is unclear if ECG-LVH and echo-LVH independently predict atrial fibrillation (AF). METHODS: This analysis included 4,904 participants (40% male; 85% white) from the Cardiovascular Health Study who were free of baseline AF and major intraventricular conduction delays. ECG-LVH was defined by Minnesota Code Classification from baseline ECG data...
December 25, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28009648/platelet-aggregation-and-the-risk-of-stent-thrombosis-or-bleeding-in-elective-percutaneous-coronary-intervention-patients
#6
Krzysztof Kukula, Mariusz Klopotowski, Pawel Kunicki, Jacek Jamiolkowski, Artur Debski, Pawel Bekta, Zbigniew Chmielak, Adam Witkowski
Platelet aggregation monitoring in patients after stent implantation is a promising way of preventing stent thrombosis and bleeding. The aim of the study was to verify whether clopidogrel (ADPtest) and aspirin (ASPItest) response measured by Multiplate (Dynabyte, Munich, Germany) analyzer in elective percutaneous coronary implantation patients predict the risk of stent thrombosis or other ischemic adverse events and bleeding. In this prospective, observational study 697 elective percutaneous coronary implantation patients were analyzed...
December 22, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28005558/residual-thromboxane-activity-and-oxidative-stress-influence-on-mortality-in-patients-with-stable-coronary-artery-disease
#7
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/27999568/potential-antifungal-targets-against-a-candida-biofilm-based-on-an-enzyme-in-the-arachidonic-acid-cascade-a-review
#8
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/27998883/unlocking-aspirin-s-chemopreventive-activity-role-of-irreversibly-inhibiting-platelet-cyclooxygenase-1
#9
Lenard M Lichtenberger, Dexing Fang, Roger J Bick, Brain J Poindexter, Tri Phan, Angela L Bergeron, Subhashree Pradhan, Elizabeth J Dial, K Vinod Vijayan
The mechanism by which aspirin consumption is linked to significant reductions in the incidence of multiple forms of cancer and metastatic spread to distant tissues, resulting in increased cancer patient survival is not well understood. In this study, using colon cancer as an example, we provide both in vitro (cell culture) and in vivo (chemically-induced mouse model of colon cancer) evidence that this profound anti-neoplastic action may be associated with aspirin's ability to irreversibly inhibit COX-1 mediated platelet activation, thereby blocking platelet-cancer cell interactions, which promote cancer cell number and invasive potential...
December 20, 2016: Cancer Prevention Research
https://www.readbyqxmd.com/read/27995340/new-single-nucleotide-polymorphisms-associated-with-differences-in-platelet-reactivity-and-their-influence-on-survival-in-patients-with-type-2-diabetes-treated-with-acetylsalicylic-acid-an-observational-study
#10
Lukasz Milanowski, Justyna Pordzik, Piotr K Janicki, Agnieszka Kaplon-Cieslicka, Marek Rosiak, Michal Peller, Agata Tyminska, Krzysztof Ozieranski, Krzysztof J Filipiak, Grzegorz Opolski, Dagmara Mirowska-Guzel, Marek Postula
AIMS: Genetic polymorphisms may contribute to platelet reactivity in diabetic patients; however, the information on their influence on long-term antiplatelet therapy is lacking. Our aim was to evaluate the role of previously described genetic variants and platelet reactivity on risk of all-cause mortality and cardiovascular events. METHODS: Blood samples were obtained from 303 Caucasian patients. Genome-wide genotyping was performed using Illumina Human Omni 2.5-Quad microarrays, and individual genotyping of selected SNPs was performed using a custom Sequenom iPLEX assay in conjunction with the Mass ARRAY platform...
December 19, 2016: Acta Diabetologica
https://www.readbyqxmd.com/read/27994661/the-effects-of-anti-inflammatory-drug-treatment-in-gastric-cancer-prevention-an-update-of-a-meta-analysis
#11
Pengfei Kong, Ruiyan Wu, Xuechao Liu, Jianjun Liu, Shangxiang Chen, Minting Ye, Chenlu Yang, Ze Song, Wenzhuo He, Chenxi Yin, Qiong Yang, Chang Jiang, Fangxin Liao, Roujun Peng, Zhiwei Zhou, Dazhi Xu, Liangping Xia
Gastric cancer has high incidence and fatality rates, making chemoprevention agents necessary. There is an ongoing debate about aspirin/nonsteroidal anti-inflammatory drugs (NSAIDs) use can significant reduce the risk of GC. We conducted a meta-analysis of existing studies evaluating the association of anti-inflammatory drug and GC. We performed a systematic literature search of PubMed, Web of Science, Embase, OVID, Cochrane Library and Clincialtrials.gov up to August 31, 2015. Either a fixed-effects or a random-effects model using was based on the result of homogeneity analysis...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27974293/duration-of-analgesic-use-and-risk-of-hearing-loss-in-women
#12
Brian M Lin, Sharon G Curhan, Molin Wang, Roland Eavey, Konstantina M Stankovic, Gary C Curhan
Aspirin, nonsteroidal antiinflammatory drugs (NSAID), and acetaminophen are commonly used. Frequent use of analgesics has been associated with a higher risk of hearing loss. However, the association between duration of analgesic use and the risk of hearing loss is unclear. We investigated the relationship between duration of analgesic use and self-reported hearing loss among 55,850 women in the Nurses' Health Study. Cox proportional hazards regression was used to adjust for potential confounders. During 873,376 person-years of follow-up (1990-2012), longer durations of NSAID use (for >6 years of use compared with <1 year, multivariable-adjusted relative risk = 1...
January 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27970123/tct-8-impact-of-aspirin-resistance-on-outcomes-after-coronary-events
#13
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
https://www.readbyqxmd.com/read/27940576/aspirin-suppresses-growth-in-pi3k-mutant-breast-cancer-by-activating-ampk-and-inhibiting-mtorc1-signaling
#14
Whitney S Henry, Tyler Laszewski, Tiffany Tsang, Francisco Beca, Andrew H Beck, Sandra S McAllister, Alex Toker
Despite the high incidence of oncogenic mutations in PIK3CA, the gene encoding the catalytic subunit of phosphoinositide 3-kinase (PI3K), PI3K inhibitors have yielded little clinical benefit for breast cancer patients. Recent epidemiological studies have suggested a therapeutic benefit from aspirin intake in cancers harboring oncogenic PIK3CA. Here we show that mutant PIK3CA-expressing breast cancer cells have greater sensitivity to aspirin-mediated growth suppression than their wild-type counterparts. Aspirin decreased viability and anchorage-independent growth of mutant PIK3CA breast cancer cells independently of its effects on cyclooxygenase-2 (COX-2) and nuclear factor-kappa B (NF-κB)...
December 9, 2016: Cancer Research
https://www.readbyqxmd.com/read/27904529/anti-aggregatory-effect-of-boswellic-acid-in-high-fat-fed-rats-involvement-of-redox-and-inflammatory-cascades
#15
Mona Kamal Tawfik
INTRODUCTION: A high-fat diet is one of the main dietary factors promoting platelet aggregation. The present study was conducted to elucidate the involvement of boswellic acid (BA) on the platelet hyperaggregability in HFD-fed rats. As platelet hyperaggregability in HFD rats is closely linked to inflammation and enhanced free radical production, the present study was extended to evaluate the anti-inflammatory and anti-oxidative effect of BA on HFD-promoted platelet aggregation. MATERIAL AND METHODS: Rats were assigned to normal, HFD-fed, aspirin-treated (30 mg/kg), and BA-treated (250 and 500 mg/kg) groups...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27901208/gastric-and-renal-effects-of-cox-2-selective-and-non-selective-nsaids-in-rats-receiving-low-dose-aspirin-therapy
#16
Marcella Goetz Moro, Paula Katherine Vargas Sanchez, Mayara Vitorino Gevert, Emeline Maria Baller, Ana Flávia Tostes, Ana Caroline Lupepsa, Sinvaldo Baglie, Gilson Cesar Nobre Franco
The consumption of low-dose aspirin (LDA) to prevent cardiovascular disease continues to increase worldwide. Consequently, the number of chronic LDA users seeking dental procedures that require complementary acute anti-inflammatory medication has also grown. Considering the lack of literature evaluating this interaction, we analyzed the gastric and renal effects caused by a selective COX-2 inhibitor (etoricoxib) and a non-selective COX-2 inhibitor (ibuprofen) nonsteroidal anti-inflammatory drug (NSAID) in rats receiving chronic LDA therapy...
November 28, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/27899747/ticagrelor-in-acute-stroke-or-transient-ischemic-attack-in-asian-patients-from-the-socrates-trial-acute-stroke-or-transient-ischemic-attack-treated-with-aspirin-or-ticagrelor-and-patient-outcomes
#17
Yongjun Wang, Kazuo Minematsu, Ka Sing Lawrence Wong, Pierre Amarenco, Gregory W Albers, Hans Denison, J Donald Easton, Scott R Evans, Peter Held, Jenny Jonasson, Carlos A Molina, S Claiborne Johnston
BACKGROUND AND PURPOSE: In the SOCRATES trial (Acute Stroke or Transient Ischemic Attack Treated With Aspirin or Ticagrelor and Patient Outcomes), ticagrelor was not superior to aspirin. Because of differences in patient demographics and stroke disease pattern in Asia, outcomes of ticagrelor versus aspirin were assessed among Asian patients in a prespecified exploratory analysis. METHODS: Baseline demographics, treatment effects, and safety of ticagrelor and aspirin were assessed among Asian patients...
January 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27892731/is-arachidonic-acid-stimulation-really-a-test-for-the-response-to-aspirin-time-to-think-again
#18
Bartosz Olechowski, Alexander Ashby, Mark Mariathas, Vikram Khanna, Michael Mahmoudi, Nick Curzen
Platelets play a key role in pathogenesis of atherothrombosis. Activated platelets initiate thrombus formation. Antiplatelet therapy (APT) modifies these properties. APT involves aspirin. The existence of 'aspirin resistance' is reported in many populations with cardiovascular disease. The prevalence of this phenomenon is highly variable, affecting more than 50% of patient subgroups in some papers. Areas covered: This review describes the prevalence of 'aspirin resistance', analyses why there is so much apparent variation and addresses whether the commonly used tests of aspirin response are in fact accurately assessing its functional performance...
January 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/27889951/performance-of-the-high-dimensional-propensity-score-in-a-nordic-health-care-model
#19
Jesper Hallas, Anton Pottegård
The high-dimensional propensity score (hdPS) is increasingly used as a tool to adjust for confounding in observational studies of drug effects. It was developed within very rich data sources, e.g., the American claims databases. Thus, it is unknown whether it can be applied in settings that provide little more than prescriptions and diagnoses from hospital contacts, as in the Nordic data sources. Our objective was to evaluate the performance of hdPS under such circumstances. As our model, we chose the association between use of selective cyclooxygenase-2 inhibitors (coxibs) and traditional NSAIDs (tNSAIDs) and the risk of upper GI bleeding...
November 27, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27887602/combination-of-aspirin-with-essential-fatty-acids-is-superior-to-aspirin-alone-to-prevent-or-ameliorate-sepsis-or-ards
#20
EDITORIAL
Undurti N Das
It has been suggested that aspirin may be of benefit in treating sepsis and ARDS in view of its ability to block cyclo-oxygenase-1 (COX-1) and COX-2 activities; inhibit nuclear factor kappa B (NF-κB); enhance the production of endothelial nitric oxide (eNO) and lipoxin A4 (LXA4). Our previous studies revealed that plasma phospholipid content of arachidonic acid (AA) and eicosapentaenoic acid (EPA) is low in patients with sepsis. This implies that beneficial actions of aspirin in sepsis and ARDS is unlikely to be obtained in view of deficiency of AA and EPA, the precursors of LXA4 and resolvins respectively that are potent anti-inflammatory compounds and enhancers of eNO generation...
November 25, 2016: Lipids in Health and Disease
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