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Aspirin AND COX

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https://www.readbyqxmd.com/read/29157985/evidence-for-autocrine-and-paracrine-regulation-of-allergen-induced-mast-cell-mediator-release-in-the-guinea-pig-airways
#1
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/29156815/the-effect-of-aspirin-on-circulating-netrin-1-levels-in-humans-is-dependent-on-the-inflammatory-status-of-the-vascular-endothelium
#2
Kerry Layne, Timothy Goodman, Albert Ferro, Gabriella Passacquale
In atherosclerotic animal models, the cyclo-oxygenase (COX)-inhibitor aspirin counteracts downregulation of endothelial-derived netrin-1, thus reducing arterial inflammation. We here explored the effect of aspirin on netrin-1 in healthy subjects undergoing influenza immunisation, which is an established experimental model of inflammation-related endothelial dysfunction. Our data showed that netrin-1 undergoes reduction (-29.25% from baseline; p=0.0017) in the presence of endothelial activation (VCAM-1 rose by 9...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156506/lower-gastrointestinal-bleeding-in-patients-with-coronary-artery-disease-on-antithrombotics-and-subsequent-mortality-risk
#3
Parita Patel, Neha Nigam, Neil Sengupta
BACKGROUND: Lower gastrointestinal bleeding (LGIB) is a common complication for patients with coronary artery disease (CAD) due to use of antithrombotic medications. Limited data exists describing which patients are at increased risk for mortality. AIM: To 1) determine whether patients on dual antiplatelet (DAPT) therapy or triple therapy are at higher risk of 90-day and 6-month mortality compared to patients on aspirin (ASA) alone and 2) evaluate risk factors for mortality in patients with CAD on antithrombotics hospitalized with LGIB...
November 20, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29149707/over-expression-of-cyclooxygenase-2-in-increased-reticulated-platelets-leads-to-aspirin-resistance-after-elective-off-pump-coronary-artery-bypass-surgery
#4
Xiaoxuan Gong, Xuezhong Wang, Zhuowen Xu, Tiantian Zhu, Qiu Zhang, Jinying Zhang, Xiaowei Wang, Chunjian Li
INTRODUCTION: Aspirin resistance (AR) has been reported to present after coronary artery bypass graft causing saphenous vein graft failure. We aimed to investigate the factors that affect the anti-platelet effect of aspirin after off-pump coronary artery bypass surgery (OPCAB). MATERIALS AND METHODS: Thirty OPCAB candidates were successively recruited. Platelet count, platelet aggregation, reticulated platelet (RP), platelets' cyclooxygenase (COX)-1 and COX-2 expressions were determined during the peri-operative period...
November 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29137605/effects-of-aspirin-and-non-aspirin-nonsteroidal-anti-inflammatory-drugs-on-the-incidence-of-recurrent-colorectal-adenomas-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis-of-randomized-clinical-trials
#5
Sajesh K Veettil, Kean Ghee Lim, Siew Mooi Ching, Surasak Saokaew, Pochamana Phisalprapa, Nathorn Chaiyakunapruk
BACKGROUND: Beneficial effects of aspirin and non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs) against recurrent colorectal adenomas have been documented in systematic reviews; however, the results have not been conclusive. Uncertainty remains about the appropriate dose of aspirin for adenoma prevention. The persistence of the protective effect of NSAIDs against recurrent adenomas after treatment cessation is yet to be established. METHODS: Our objective was to update and systematically evaluate the evidence for aspirin and other NSAIDs on the incidence of recurrent colorectal adenomas taking into consideration the risks of random error and to appraise the quality of evidence using GRADE (The Grading of Recommendations, Assessment, Development and Evaluation) approach...
November 14, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29126156/antithrombotic-therapy-after-myocardial-infarction-in-patients-with-atrial-fibrillation-undergoing-percutaneous-coronary-intervention
#6
Gorav Batra, Leif Friberg, David Erlinge, Stefan James, Tomas Jernberg, Bodil Svennblad, Lars Wallentin, Jonas Oldgren
Aims: Optimal antithrombotic therapy after percutaneous coronary intervention (PCI) in patients with myocardial infarction and atrial fibrillation is uncertain. In this study, we compared antithrombotic regimes with regard to a composite cardiovascular outcome of all-cause mortality, myocardial infarction or ischaemic stroke and major bleeds. Methods and results: Patients between October 2005 and December 2012 were identified in Swedish registries, n = 7,116...
November 6, 2017: European Heart Journal. Cardiovascular Pharmacotherapy
https://www.readbyqxmd.com/read/29122547/low-dose-aspirin-use-does-not-increase-survival-in-2-independent-population-based-cohorts-of-patients-with-esophageal-or-gastric-cancer
#7
Andrew D Spence, John Busby, Brian T Johnston, John A Baron, Carmel M Hughes, Helen G Coleman, Chris R Cardwell
BACKGROUND & AIMS: Pre-clinical studies have shown aspirin to have anti-cancer properties and epidemiologic studies have associated aspirin use with longer survival times of patients with cancer. We studied 2 large cohorts to determine the association between aspirin use and cancer-specific mortality in patients with esophageal or gastric cancer. METHODS: We performed a population-based study using cohorts of patients newly diagnosed with esophageal or gastric cancer, identified from cancer registries in England from 1998 through 2012 and the Scottish Cancer Registry from 2009 through 2012...
November 6, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29120007/incidence-of-heterotopic-ossification-following-a-multimodal-pain-protocol-in-total-hip-arthroplasty-with-the-posterior-approach
#8
Peter B White, Prem N Ramkumar, Morteza Meftah, Narges Ghazi, Amar S Ranawat, Chitranjan S Ranawat
Heterotopic ossification (HO) is prevalent after total hip arthroplasty (THA). Oral nonsteroidal anti-inflammatory drugs and cyclooxygenase-2 (COX-2) inhibitors have reduced the incidence of HO; however, to the authors' knowledge, no studies have reported the incidence and severity of HO with a pain protocol highlighted by celecoxib in the pre- and postoperative period with a posterolateral approach. Between October 2014 and October 2015, a retrospective study was conducted of 687 consecutive primary THAs with minimum 1-year follow-up performed between January 2009 and December 2013...
November 8, 2017: Orthopedics
https://www.readbyqxmd.com/read/29119583/hyperlipidemia-is-associated-with-an-increased-risk-of-clinical-benign-prostatic-hyperplasia
#9
Hung-Jen Shih, Chun-Jen Huang, Jui-An Lin, Ming-Chang Kao, Yen-Chun Fan, Pei-Shan Tsai
BACKGROUND: A high fat diet is associated with risk of benign prostatic hyperplasia (BPH). However, whether hyperlipidemia is associated with BPH remains unclear. This population-based cohort study elucidated whether hyperlipidemia is associated with an increased risk of BPH. METHODS: We used a new-exposure design and analyzed data retrieved from the Taiwan National Health Insurance Database between January 1, 2000 and December 31, 2013. The cohort of men with newly diagnosed hyperlipidemia and the age- and index-date-matched (1:3) nonhyperlipidemia cohort were tracked for incidence of BPH during a 1- to 14-year follow-up...
November 9, 2017: Prostate
https://www.readbyqxmd.com/read/29118740/response-to-trypanosoma-cruzi-by-human-blood-cells-enriched-with-dentritic-cells-is-controlled-by-cyclooxygenase-2-pathway
#10
Sandra C H Lonien, Aparecida D Malvezi, Helena T Suzukawa, Lucy M Yamauchi, Sueli F Yamada-Ogatta, Luiz V Rizzo, Juliano Bordignon, Phileno Pinge-Filho
Chagas disease (Cd) or American human trypanosomiasis is caused by Trypanosoma cruzi and affects ~7 million people, mostly in Latin America. The infective trypomastigote forms of the parasite can invade several human blood cell populations, including monocytes and dendritic cells (DC). Although these cells display a wide functional diversity, their interactions with T. cruzi via cyclooxygenase (COX) and cyclic adenosine monophosphate (cAMP) dependent pathways have not been analyzed. To exploiting this mechanism, DC-enriched peripheral human blood mononuclear cell populations (DC-PBMC) were used as our model...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29105106/angiotensin-receptor-blocker-use-and-gastro-oesophageal-cancer-survival-a-population-based-cohort-study
#11
J Busby, Ú McMenamin, A Spence, B T Johnston, C Hughes, C R Cardwell
BACKGROUND: Angiotensin receptor blockers (ARBs; including candesartan, losartan, olmesartan and valsartan) are widely used to treat hypertension, heart failure and diabetic neuropathy. There is considerable pre-clinical evidence that ARBs can reduce cancer progression, particularly for gastric cancer. Despite this, epidemiological studies have yet to assess the impact of ARB use on gastro-oesophageal cancer survival. AIM: To investigate the association between post-diagnosis ARB use and gastro-oesophageal cancer survival...
November 3, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29081218/effects-of-aspirin-nonsteroidal-anti-inflammatory-drugs-statin-and-cox2-inhibitor-on-the-developments-of-urological-malignancies-a-population-based-study-with-10-year-follow-up-data-in-korea
#12
Minyong Kang, Ja Hyeon Ku, Cheol Kwak, Hyeon Hoe Kim, Chang Wook Jeong
Purpose: The purpose of this study was to determine the impact of aspirin, nonsteroidal anti-inflammatory drugs (NSAIDs), statin and cyclooxygenase 2 (COX-2) inhibitor on the development of kidney, prostate and urothelial cancers by analyzing the Korean National Health Insurance Service-National Sample Cohort (NHIS-NSC) database. Materials and Methods: Among a representative sample cohort of 1,025,340 participants in NHIS-NSC database in 2002, we extracted data of 799,850 individuals who visited the hospital more than once, and finally included 321,122 individuals aged 40 and older...
October 27, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29055792/the-effect-of-acetyl-salicylic-acid-aspirin-on-trophoblast-endothelial-interaction-in-vitro
#13
Bei Xu, Renuka Shanmugalingam, Katrina Chau, Suzanne Pears, Annemarie Hennessy, Angela Makris
Early administration of low dose acetyl salicylic acid (Aspirin) in high risk women reduces the risk of early onset preeclampsia. This study aims to investigate the effect of aspirin on trophoblast integration and the its effect on angiogenic and invasive pathways in an in-vitro model of preeclampsia. Red fluorescent-labeled human uterine myometrial microvascular endothelial cells (UtMVECs) were seeded on matrigel to form endothelial networks. Green fluorescent-labeled trophoblastic HTR-8/SVneo cells were co-cultured with the endothelial networks with/without TNF-a (0...
October 18, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29026708/identification-of-risk-factors-influencing-in-stent-restenosis-with-acute-coronary-syndrome-presentation
#14
Jae Young Cho
Although the angiographic rates of in-stent restenosis (ISR) at later months have reduced dramatically with the introduction of drug-eluting stents (DESs), some patients with ISR after implantation of DES present with acute coronary syndrome (ACS). Here, we sought to identify parameters influencing the likelihood of restenosis with ACS presentation after DES implantation. Stented patients (n=3,817) with DESs in the Korea University Anam Hospital percutaneous coronary intervention registry were reviewed retrospectively for inclusion...
September 2017: Chonnam Medical Journal
https://www.readbyqxmd.com/read/28990263/early-aspirin-initiation-following-heart-transplantation-is-associated-with-reduced-risk-of-allograft-vasculopathy-during-long-term-follow-up
#15
Yael Peled, Jacob Lavee, Eugenia Raichlin, Moshe Katz, Michael Arad, Yigal Kassif, Amir Peled, Elad Asher, Dan Elian, Yedael Har-Zahav, Nir Shlomo, Dov Freimark, Ilan Goldenberg, Robert Klempfner
AIM: Cardiac allograft vasculopathy (CAV) is a major cause of morbidity and mortality after heart transplantation (HT). Enhanced platelet reactivity is a contributing factor. We aimed to investigate the association between early initiation of aspirin therapy post-HT and the 15-year risk of the development of CAV. METHODS: We studied 206 patients who underwent HT between 1991and 2016. Multivariate Cox proportional hazards regression modeling was employed to evaluate the association between early aspirin initiation and the long-term risk of CAV...
October 9, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28978235/the-effect-of-monthly-medication-on-mortality-after-a-coronary-event
#16
María C Montero-Balosa, Rocío Fernández-Urrusuno, Angel Vilches-Arenas
AIM: The aim of this study was to analyze how the consumption of medication over time affects the survival rate in patients with a coronary event and whether there is a gender difference. METHODS: The study included 804 patients admitted to 4 hospitals with a coronary event during 2007. Monitoring after coronary event was carried out during 2007 and every 6 months in the subsequent 2 years (2008 and 2009) throughout the review of the clinical history of the patient...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28969559/genetic-signatures-in-ischemic-stroke-focus-on-aspirin-resistance
#17
Anjana Munshi, Kanika Vasudeva, Pratibha Chaurasia, Sulena Singh
Stroke is one of the leading causes of death. There has been compelling evidence that stroke has a genetic component. Genetic variants not only influence susceptibility to stroke but have also been found to alter the response to pharmacological agents and influence the clinical outcome of the disease. Stroke patients are treated with antiplatelet drugs like aspirin and clopidogrel to prevent a secondary stroke. Inspite the fact that many new antiplatelet drugs have been developed; aspirin is still considered as a golden standard for the antiplatelet therapy...
October 2, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28948649/association-of-gpia-and-cox-2-gene-polymorphism-with-aspirin-resistance
#18
Hui Wang, Xiaoxin Sun, Wanli Dong, Xiuying Cai, Yun Zhou, Youtao Zhang, Weijian Jiang, Qi Fang
OBJECTIVE: This study aimed to explore the association between GPIa, COX-2 gene polymorphisms and aspirin resistance in the ischemic stroke patients from the southern part of Jiangsu province. METHODS: In all, 97 patients with acute ischemic stroke were enrolled in the study. GPIa gene polymorphism at 807C>T (rsl126643) locus and COX-2 gene polymorphism at -765G>C (rs20417) locus were genotyped by PCR pyrosequencing technology. Patients were divided into the aspirin sensitivity (AS) group and aspirin resistance (AR) group according to the platelet aggregation rate...
September 26, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28944316/relationship-between-anti-depressant-use-and-lung-cancer-survival
#19
Adriana Zingone, Derek Brown, Elise D Bowman, Oscar Vidal, Julien Sage, Joel Neal, Bríd M Ryan
OBJECTIVES: In recent years, the anti-cancer properties of several commonly used drugs have been explored, with drugs such as aspirin and beta-blockers associated with improved cancer outcomes. Previous preclinical work demonstrated that tricyclic anti-depressants have antitumor efficacy in lung cancer. Our goal was to examine the association between anti-depressant use and survival in lung cancer. MATERIALS AND METHODS: We examined the association between use of common anti-depressants and survival in 1,097 lung cancer patients from the NCI-Maryland lung cancer study...
2017: Cancer Treat Res Commun
https://www.readbyqxmd.com/read/28939444/trypanosoma-cruzi-inhibition-of-infection-of-human-monocytes-by-aspirin
#20
Rafael Carvalho de Freitas, Sandra Cristina Heim Lonien, Aparecida Donizette Malvezi, Guilherme Ferreira Silveira, Pryscilla Fanini Wowk, Rosiane Valeriano da Silva, Lucy Megumi Yamauchi, Sueli Fumie Yamada-Ogatta, Luiz Vicente Rizzo, Juliano Bordignon, Phileno Pinge-Filho
Cell invasion by Trypanosoma cruzi and its intracellular replication are essential for progression of the parasite life cycle and development of Chagas disease. Prostaglandin E2 (PGE2) and other eicosanoids potently modulate host response and contribute to Chagas disease progression. In this study, we evaluated the effect of aspirin (ASA), a non-selective cyclooxygenase (COX) inhibitor on the T. cruzi invasion and its influence on nitric oxide and cytokine production in human monocytes. The pretreatment of monocytes with ASA or SQ 22536 (adenylate-cyclase inhibitor) induced a marked inhibition of T...
November 2017: Experimental Parasitology
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