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Aspirin AND COX

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https://www.readbyqxmd.com/read/29789128/prostaglandin-e2-attenuates-synergistic-bactericidal-effects-between-cox-inhibitors-and-antibiotics-on-staphylococcus-aureus
#1
Jia-Yi Cai, Yong-Na Hou, Jian Li, Kai Ma, Guo-Dong Yao, Wei-Wei Liu, Toshihiko Hayashi, Kikuji Itoh, Shin-Ichi Tashiro, Satoshi Onodera, Takashi Ikejima
PGE2 is found to attenuate the bactericidal effects of kanamycin or ampicillin in Staphylococcus aureus, as well as the methicillin-resistant S. aureus (MRSA). Co-treatment with cyclooxygenase (COX) inhibitors (celecoxib, aspirin or naproxen) synergistically enhances kanamycin or ampicillin-induced cell death of S. aureus and MRSA. COX inhibitors repressed bacterial multidrug resistance through down-regulating efflux pump activity in antibiotics-treated S. aureus and MRSA. However, this synergistic bactericidal effects are reduced by the treatment with PGE2...
June 2018: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29782360/a-phase-ii-study-of-celecoxib-with-irinotecan-5-fluorouracil-and-leucovorin-in-patients-with-previously-untreated-advanced-or-metastatic-colorectal-cancer
#2
Emerson Y Chen, Charles D Blanke, Daniel G Haller, Al B Benson, Tomislav Dragovich, Heinz-Josef Lenz, Carlos Robles, Hong Li, Motomi Mori, Nora Mattek, Rachel E Sanborn, Charles D Lopez
OBJECTIVE: Colorectal cancer (CRC) is the second leading cause of cancer death in the United States. Cyclooxygenase-2 (COX-2) overexpression is associated with increased tumor invasiveness and proliferation in CRC, and COX-2 inhibition has demonstrated chemopreventive activity. This study investigated the addition of celecoxib, a selective COX-2 inhibitor, to the irinotecan, 5-fluorouracil, and leucovorin (IFL) regimen for patients with previously untreated metastatic CRC. PATIENTS AND METHODS: Forty-seven patients enrolled in this single-arm phase II study received celecoxib at 400 mg orally twice daily in combination with weekly irinotecan (125 mg/m), 5-fluorouracil (500 mg/m), and leucovorin (20 mg/m) for 4 weeks every 6 weeks...
May 18, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29780561/triple-action-pt-iv-derivatives-of-cisplatin-a-new-class-of-potent-anticancer-agents-that-overcome-resistance
#3
Emanuele Petruzzella, Roman Sirota, Irene Solazzo, Valentina Gandin, Dan Gibson
A series of triple action Pt(iv) prodrugs was designed to test the hypothesis that multi-action compounds, where each bioactive moiety intervenes in several cellular processes, might be more effective than a single agent at killing cancer cells. In particular, "triple action" Pt(iv) derivatives of cisplatin, where the axial ligands are inhibitors of cyclooxygenase (COXi), histone deacetylase (HDACi) or pyruvate dehydrogenase kinase (PDKi) were developed. All compounds, ctc-[Pt(NH3 )2 (COXi)(PDKi)Cl2 ], ctc-[Pt(NH3 )2 (COXi)(HDACi)Cl2 ] and ctc-[Pt(NH3 )2 (HDACi)(PDKi)Cl2 ], where COXi = aspirin or ibuprofen, PDKi = dichloroacetate and HDACi = valproate or phenylbutyrate, were significantly more cytotoxic than cisplatin against all cell lines of an in-house panel of human cancer cells...
May 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29769213/chemopreventive-efficacy-of-the-cyclooxygenase-2-cox-2-inhibitor-celecoxib-is-predicted-by-adenoma-expression-of-cox-2-and-15-pgdh
#4
Jiping Wang, Nancy L Cho, Ann G Zauber, Meier Hsu, Dawn Dawson, Amitabh Srivastava, Kisha A Mitchell-Richards, Sanford D Markowitz, Monica M Bertagnolli
BACKGROUND: The APC trial showed that cyclooxygenase-2 (Cox-2) inhibitor, celecoxib, decreased adenoma development in patients at high risk for colorectal cancer. A prospectively planned analysis of the APC trial tested the hypothesis that expression of target enzymes in adenomas removed before beginning study treatment would identify individuals at high risk of adenoma development, and/or predict response to Cox-2 inhibition. METHODS: Pre-treatment adenomas were examined using immunohistochemistry (IHC) to assess expression of Cox-2 (high vs...
May 16, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29767694/shorter-time-to-pregnancy-with-increasing-preconception-carotene-concentrations-among-women-with-1-to-2-previous-pregnancy-losses
#5
Keewan Kim, Enrique F Schisterman, Robert M Silver, Brian D Wilcox, Anne M Lynch, Neil J Perkins, Richard W Browne, Laurie L Lesher, Joseph B Stanford, Aijun Ye, Jean Wactawski-Wende, Sunni L Mumford
Although maternal nutrition may impact fecundity, associations between preconception micronutrients and time to pregnancy (TTP) has not been examined. We assessed the relationship between preconception fat-soluble micronutrient concentrations and TTP among women with 1-2 prior pregnancy losses. This is a prospective cohort study of 1,228 women set in the EAGeR Trial (US, 2007-2011), which assessed the effect of preconception-initiated daily low dose aspirin on reproductive outcomes. We measured preconception zeaxanthin, cryptoxanthin, lycopene, α- and β-carotene, and α- and γ-tocopherol in serum...
May 14, 2018: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29757761/aspirin-resistance-cardiovascular-risk-game-changer
#6
Ahmed S Yassin, Hossam Abubakar, Tushar Mishra, Ahmed Subahi, Melanie Hartman, Abdelrahman Ahmed, Walid Ibrahim, Manmohan Singh, Mohit Pahuja
BACKGROUND: Aspirin (ASA) is the most used medication on the globe. ASA is a primary pillar of the secondary prevention of cardiovascular atherothromboembolic events. However, a fraction of the population does not respond to ASA as expected in a unique phenomenon called ASA resistance. Multiple mechanisms were described and studied in the literature to explain this phenomenon. AREA OF UNCERTAINTY: ASA resistance is an interesting phenomenon that is worth studying and reviewing...
May 3, 2018: American Journal of Therapeutics
https://www.readbyqxmd.com/read/29754654/dual-antiplatelet-therapy-for-perioperative-myocardial-infarction-following-cabg-surgery
#7
Alice Wang, Angie Wu, Daniel Wojdyla, Renato D Lopes, L Kristin Newby, Mark F Newman, Peter K Smith, John H Alexander
OBJECTIVES: Perioperative myocardial infarction (MI) after coronary artery bypass graft surgery (CABG) has been associated with adverse outcome. Whether perioperative MI should be treated with dual antiplatelet therapy (DAPT) is unknown. We compared the effect of DAPT versus aspirin alone on short-term outcomes among patients with perioperative MI following CABG. METHODS: We used data from 3 clinical trials that enrolled patients undergoing isolated CABG: PREVENT IV (2002-2003), MEND-CABG II (2004-2005), and RED-CABG (2009-2010) (n = 9117)...
May 2018: American Heart Journal
https://www.readbyqxmd.com/read/29730781/role-of-antiplatelet-therapy-in-the-durability-of-hemodialysis-access
#8
Satinderjit Locham, Robert J Beaulieu, Hanaa Dakour-Aridi, Besma Nejim, Mahmoud B Malas
BACKGROUND: Antiplatelet therapy (APT) is often used on anecdotal grounds to improve vascular access patency. The aim of this study was to assess the role of APT in hemodialysis (HD) patients undergoing arteriovenous fistula (AVF) or graft (AVG) placement. METHODS: All patients in a large HD vascular qualitative initiative database (2011-2017) were included and divided into no antiplatelet therapy (no-APT) vs. any APT [aspirin (ASA) or P2Y12 inhibitors (PI)]. Multivariate [logistic (MLR) and Cox (MCR) regression] analyses were used as appropriate...
May 5, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29720539/its-reticulated-the-liver-at-the-heart-of-atherosclerosis
#9
Prabhakara R Nagareddy, Sunil K Noothi, Michelle Christine Flynn, Andrew Murphy
Platelets play a critical role in both the initiation and progression of atherosclerosis, and even more so in the ensuing atherothrombotic complications. Low-dose aspirin remains the mainstay of antiplatelet therapy in high-risk patients by reducing the risk of myocardial ischemia (MI), stroke, or death due to cardiovascular disease (CVD). However, antiplatelet therapies lose their efficacy in people with diabetes mellitus (DM), increasing the risk of future atherothrombotic events. The molecular mechanisms that promote platelet hyperactivity remain unclear but could be due to glycation-induced conformational changes of platelet membranes resulting in impaired aspirin entry, or less-efficient acetylation/compensatory increase in COX-2 expression in newborn platelets...
May 2, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29718107/the-intervention-effect-of-aspirin-on-a-lipopolysaccharide-induced-preeclampsia-like-mouse-model-by-inhibiting-the-nf-%C3%AE%C2%BAb-pathway
#10
Guanlin Li, Liyang Ma, Li Lin, Yan-Ling Wang, Huixia Yang
Preeclampsia is a severe pregnancy-related disorder, and patients usually present with high circulating inflammatory factor production as well as excessive activation of the nuclear factor-κB (NF-κB) pathway. Administration of aspirin (ASP) is effective for the prevention of preeclampsia, we proposed that ASP might affect placental function by regulating the NF-κB pathway. Systemic lipopolysaccharide (LPS) (20 μg/kg) was used to induce preeclampsia-like pregnant mouse model and low-dose ASP (15.2 mg/kg) were further treated...
April 27, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29698447/celecoxib-use-and-circulating-oxylipins-in-a-colon-polyp-prevention-trial
#11
Jessica A Martinez, Jun Yang, Betsy C Wertheim, Denise J Roe, Alexander Schriewer, Peter Lance, David S Alberts, Bruce D Hammock, Patricia A Thompson
Drugs that inhibit cyclooxygenase (COX)-2 and the metabolism of arachidonic acid (ARA) to prostaglandin E2 are potent anti-inflammatory agents used widely in the treatment of joint and muscle pain. Despite their benefits, daily use of these drugs has been associated with hypertension, cardiovascular and gastrointestinal toxicities. It is now recognized that ARA is metabolized to a number of bioactive oxygenated lipids (oxylipins) by cyclooxygenase (COX), lipoxygenase (LOX), and cytochrome P450 (CYP450) enzymes...
2018: PloS One
https://www.readbyqxmd.com/read/29688503/the-potential-benefits-of-aspirin-for-primary-cardiovascular-prevention-in-rheumatoid-arthritis-a-secondary-analysis-of-the-precision-trial
#12
Daniel H Solomon, Peter Libby, Neville D Yeomans, Qiuqing Wang, Kathy E Wolski, Steven E Nissen, M Elaine Husni
Objective: Guidelines exist for the use of low-dose aspirin in the general population for primary cardiovascular (CV) prevention, but the risk-benefit considerations may differ in RA. While RA confers an increased CV risk, such patients more likely use NSAIDs and corticosteroids. Methods: We conducted a cohort study to assess potential risks and benefits of low-dose aspirin. We estimated incidence rates and hazard ratios (HRs) using Cox regression among subjects with RA but no known CV disease in the Prospective Randomized Evaluation of Celecoxib Integrated Safety Vs Ibuprofen Or Naproxen trial...
April 20, 2018: Rheumatology
https://www.readbyqxmd.com/read/29685722/is-von-willebrand-factor-associated-with-stroke-and-death-at-mid-term-in-patients-with-non-valvular-atrial-fibrillation
#13
Yann Ancedy, Emmanuelle Berthelot, Sylvie Lang, Stéphane Ederhy, Louise Boyer-Chatenet, Emanuele Di Angelantonio, Laurie Soulat-Dufour, Arnaud Etienney, Saroumadi Adavane-Scheublé, Franck Boccara, Ariel Cohen
BACKGROUND: Heart failure and atrial fibrillation share common mechanisms that may contribute to hypercoagulability and thrombotic risk. Elevated von Willebrand factor (vWF) concentration has been associated with increased risk of thromboembolism and cardiovascular events. AIM: To investigate whether increased vWF plasma concentration predicts occurrence of a composite endpoint (all-cause death and stroke) in patients with non-valvular atrial fibrillation (NVAF)...
April 20, 2018: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29685512/causes-and-outcomes-of-finger-ischemia-in-hospitalized-patients-in-the-intensive-care-unit
#14
Gregory J Landry, Courtney J Mostul, Daniel S Ahn, Bryant J McLafferty, Timothy K Liem, Erica L Mitchell, Enjae Jung, Cherrie Z Abraham, Amir F Azarbal, Robert B McLafferty, Gregory L Moneta
OBJECTIVE: Vascular surgeons may be consulted to evaluate hospitalized patients with finger ischemia. We sought to characterize causes and outcomes of finger ischemia in intensive care unit (ICU) patients. METHODS: All ICU patients who underwent evaluation for finger ischemia from 2008 to 2015 were reviewed. All were evaluated with finger photoplethysmography. The patients' demographics, comorbidities, ICU care (ventilator status, arterial lines, use of vasoactive medications), finger amputations, and survival were also recorded...
April 20, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29684577/predictors-of-switching-from-non-steroidal-anti-inflammatory-drugs-to-corticosteroids-in-patients-with-acute-pericarditis-and-impact-on-clinical-outcome
#15
George Lazaros, Alexios S Antonopoulos, Charalambos Vlachopoulos, Evangelos Oikonomou, Apostolos Karavidas, Christina Chrysohoou, Emilia Lazarou, Dimitrios Vassilopoulos, Massimo Imazio, Dimitris Tousoulis
BACKGROUND: Aspirin and non-steroidal anti-inflammatory drugs (A/NSAIDs) are the mainstay treatments for of acute pericarditis. We sought to identify factors predicting A/NSAIDs failure and switch to corticosteroid treatment (STCT) as well as the impact of STCT on pericarditis recurrence. METHODS: We enrolled 148 patients with acute pericarditis receiving A/NSAID (n=110) or corticosteroids (n=38) as first line treatment according to clinical indications. In case of poor response to A/NSAIDs (n=37), STCT was performed and factors contributing to such failure were explored...
April 20, 2018: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/29679301/contemporary-antithrombotic-treatment-in-patients-with-non-valvular-atrial-fibrillation-undergoing-percutaneous-coronary-intervention-rationale-and-design-of-the-greek-antiplatelet-atrial-fibrillation-grape-af-registry
#16
Ioanna Xanthopoulou, Vasiliki-Maria Dragona, Periklis Davlouros, Costas Tsioufis, Efstathios Iliodromitis, Dimitrios Alexopoulos
BACKGROUND: Approximately 5 to 7% of patients undergoing percutaneous coronary intervention (PCI) for the treatment of coronary artery disease require chronic oral anticoagulation (OAC) on top of aspirin and a P2Y12 receptor antagonist, mainly due to non-valvular atrial fibrillation (AF). The advent of non-vitamin K antagonist oral anticoagulants (NOACs) increased treatment options, while there is cumulative evidence that dual combination of a NOAC and a P2Y12 receptor antagonist attenuates risk of bleeding, compared to traditional triple therapy, consisting of a vitamin K antagonist (VKA), aspirin, and a P2Y12 receptor antagonist, without significantly compromising efficacy...
April 20, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29673465/effect-of-aspirin-coadministration-on-the-safety-of-celecoxib-naproxen-or-ibuprofen
#17
Grant W Reed, Mouin S Abdallah, Mingyuan Shao, Kathy Wolski, Lisa Wisniewski, Neville Yeomans, Thomas F Lüscher, Jeffrey S Borer, David Y Graham, M Elaine Husni, Daniel H Solomon, Peter Libby, Venu Menon, A Michael Lincoff, Steven E Nissen
BACKGROUND: The safety of nonsteroidal anti-inflammatory drug (NSAID) and aspirin coadministration is uncertain. OBJECTIVES: The aim of this study was to compare the safety of combining NSAIDs with low-dose aspirin. METHODS: This analysis of the PRECISION (Prospective Randomized Evaluation of Celecoxib Integrated Safety Versus Ibuprofen or Naproxen) trial included 23,953 patients with osteoarthritis or rheumatoid arthritis at increased cardiovascular risk randomized to celecoxib, ibuprofen, or naproxen...
April 24, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29668690/aspirin-use-and-long-term-rates-of-sepsis-a-population-based-cohort-study
#18
Joann Hsu, John P Donnelly, Ninad S Chaudhary, Justin X Moore, Monika M Safford, Junghyun Kim, Henry E Wang
OBJECTIVE: Sepsis is the syndrome of life-threatening organ dysfunction resulting from dysregulated host response to infection. Aspirin, an anti-inflammatory agent, may play a role in attenuating the inflammatory response during infection. We evaluated the association between aspirin use and long-term rates of sepsis as well as sepsis outcomes. METHODS: We analyzed data from 30,239 adults ≥45 years old in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) cohort...
2018: PloS One
https://www.readbyqxmd.com/read/29648647/a-prospective-study-of-physical-activity-and-fecundability-in-women-with-a-history-of-pregnancy-loss
#19
Lindsey M Russo, Brian W Whitcomb, Sunni L Mumford, Marquis Hawkins, Rose G Radin, Karen C Schliep, Robert M Silver, Neil J Perkins, Keewan Kim, Ukpebo R Omosigho, Daniel L Kuhr, Tiffany L Holland, Lindsey A Sjaarda, Enrique F Schisterman
STUDY QUESTION: Is physical activity (PA) associated with fecundability in women with a history of prior pregnancy loss? SUMMARY ANSWER: Higher fecundability was related to walking among overweight/obese women and to vigorous PA in women overall. WHAT IS KNOWN ALREADY: PA may influence fecundability through altered endocrine function. Studies evaluating this association have primarily utilized Internet-based recruitment and self-report for pregnancy assessment and have yielded conflicting results...
April 10, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29622155/lack-of-association-between-heart-failure-and-incident-cancer
#20
Senthil Selvaraj, Deepak L Bhatt, Brian Claggett, Luc Djoussé, Sanjiv J Shah, Jiaying Chen, Tasnim F Imran, Saadia Qazi, Howard D Sesso, J Michael Gaziano, Deborah Schrag
BACKGROUND: Several recent studies have suggested an increased cancer risk among patients with heart failure (HF). However, these studies are constrained by limited size and follow-up, lack of comprehensive data on other health attributes, and adjudicated cancer outcomes. OBJECTIVES: This study sought to determine whether HF is associated with cancer incidence and cancer-specific mortality. METHODS: The study assembled a cohort from the Physicians' Health Studies I and II, 2 randomized controlled trials of aspirin and vitamin supplements conducted from 1982 to 1995 and from 1997 to 2011, respectively, that included annual health evaluations and determination of cancer and HF diagnoses...
April 10, 2018: Journal of the American College of Cardiology
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