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https://www.readbyqxmd.com/read/29888621/the-relationship-between-aspirin-resistance-and-carotid-imaging-in-young-patients-with-st-segment-elevated-myocardial-infarction-a-cross-sectional-study
#1
Mustafa Umut Somuncu, Ali Riza Demir, Huseyin Karakurt, Nail Guven Serbest, Belma Kalayci, Umit Bulut, Seda Tukenmez Karakurt
The presence of carotid atherosclerosis accompanied by coronary artery disease is associated with poor prognosis. A subset of patients who take aspirin continue to have recurrent cardiovascular events, which may be due to aspirin resistance (AR). Also, carotid plaques may cause turbulent flow which in turn may lead to platelet activation and poor antiplatelet response. In our study, we aimed to show the prevalence of AR and its relationship between high-risk carotid images in young patients with ST-segment elevated myocardial infarction (STEMI)...
January 1, 2018: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/29804161/dual-therapy-with-clopidogrel-and-aspirin-prevents-early-neurological-deterioration-in-ischemic-stroke-patients-carrying-cyp2c19-2-reduced-function-alleles
#2
Jing Lin, Zhao Han, Chun Wang, Xingyang Yi, Zhenxiao Chai, Qiang Zhou, Ruyue Huang
PURPOSE: To investigate the associations between CYP2C19 genotypes and early neurological deterioration (END), and to carry out a stratified analysis of the effectiveness of clopidogrel alone and dual antiplatelet therapy with clopidogrel and aspirin for prevention of END according to CYP2C19 genotypes in ischemic stroke (IS) patients. METHODS: This was a prospective, observational, two-center study. A total of 375 acute IS patients were enrolled. Platelet aggregation was measured before and after the 7- to 10-day treatment...
May 26, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29792865/aspirin-restores-abt-737-mediated-apoptosis-in-human-renal-carcinoma-cells
#3
Yen-Chuan Ou, Jian-Ri Li, Jiaan-Der Wang, Wen-Ying Chen, Yu-Hsiang Kuan, Ching-Ping Yang, Su-Lan Liao, Hsi-Chi Lu, Chun-Jung Chen
Aspirin is a novel chemopreventive agent against malignancy. However, outcomes of aspirin monotherapy of renal cell carcinoma (RCC) are inconsistent across studies. ABT-737, an BH3 mimetic inhibitor, is also a promising antitumor drug. Cancer cells including those from RCC, that have high levels of Mcl-1, are refractory to ABT-737-induced apoptosis. We here investigated how aspirin treatment modulates the ABT-737-induced apoptosis. Using the in vitro model of human 786-O cells, we showed that aspirin had sensitized cells to ABT-737 induced apoptosis...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29789128/prostaglandin-e2-attenuates-synergistic-bactericidal-effects-between-cox-inhibitors-and-antibiotics-on-staphylococcus-aureus
#4
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/29780561/triple-action-pt-iv-derivatives-of-cisplatin-a-new-class-of-potent-anticancer-agents-that-overcome-resistance
#5
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/29775206/prospective-determination-of-aspirin-sensitivity-in-patients-resistant-to-low-dose-aspirin-a-proof-of-concept-study
#6
Erica S Westphal, Michelle Rainka, Michelle Amsler, Traci Aladeen, Caitlin Wisniewski, Vernice Bates, Fran M Gengo
This study tested the capability of an assay to predict aspirin response and reduce ischemic events, and healthcare costs, and delays to optimal treatment. Patients who needed aspirin in the course of normal medical care were included. Patients were excluded if they had disorders affecting platelet function, alcohol use within 24 hours of a test, or NSAID use. Dose escalation of chewable aspirin from 81 mg, to 162 mg, to 325 mg daily occurred based on the results of whole blood impedance aggregation testing to the agonists, collagen (1ug/mL, 5 ug/mL) and arachidonate (0...
May 18, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29775202/the-development-of-an-in-vitro-assay-for-the-prospective-determination-of-aspirin-sensitivity
#7
Erica S Westphal, Caitlin Wisniewski, Michelle Rainka, Nicholas M Smith, Vernice Bates, Fran M Gengo
Aspirin remains the standard for stroke prophylaxis. However, as many as 20%-25% of patients may fail to show a full response to aspirin. Ideally, patients who are resistant to aspirin could be identified, then receive an increased dose of aspirin or be changed to an alternative therapy more efficiently. We have developed an in vitro assay that may make this possible. Healthy volunteers (n = 13) between 18 and 50 years of age were tested for both ex vivo and in vivo responses to aspirin. Dimethyl sulfoxide (DMSO) was selected as the solvent for aspirin in the assay...
May 18, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29771821/the-effects-of-exercise-aspirin-and-celecoxib-in-an-atherogenic-environment
#8
Heather Grimm, Jan Kretzschmar, Marc D Cook, Michael D Brown
INTRODUCTION: Optimal vascular function is a hallmark of cardiovascular health. Specifically, the balance of vasoconstricting and vasodilating substances is recognized as a marker of vascular health. One of the greatest challenges to vascular health and vasodilatory balance is tumor necrosis factor alpha (TNFα) mediated inflammation. Uncovering effective strategies that maintain a vascular environment that is more vasodilatory and anti-thrombotic in the face of an inflammatory challenge is favorable...
April 30, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29757761/aspirin-resistance-cardiovascular-risk-game-changer
#9
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/29755535/optimization-and-characterization-of-aspirin-encapsulated-nano-liposomes
#10
Samira Khodayar, Hassan Bardania, Seyed Abbas Shojaosadati, Fatemeh Bagheri
Resistance to aspirin and its cytotoxicity significantly limits its therapeutic applications. Nano-liposomal encapsulation of aspirin can reduce its cytotoxicity. In this study, aspirin encapsulating nano-liposomes (AS-NL) was prepared and its performance in drug delivery and also cytotoxicity was evaluated. The effects of two independent variables including number of freeze/thawing cycles and concentration of aspirin on encapsulation efficiency was investigated using response surface methodology (RSM). A drug profile release was obtained by AS-NL...
2018: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/29754149/the-role-of-dipyrone-in-the-high-development-of-on-treatment-platelet-reactivity-in-acetylsalicylic-acid-treated-patients-undergoing-peripheral-artery-revascularization
#11
Jan Hartinger, Robert Novotny, Jana Bilkova, Tomas Kvasnicka, Petr Mitas, Martin Sima, Jaroslav Hlubocky, Jan Kvasnicka, Ondrej Slanar, Jaroslav Lindner
OBJECTIVE: To evaluate the effects of dipyrone on sensitivity to Aspirin [acetyl salicylic acid, (ASA)] in patients who underwent peripheral artery vascular reconstruction. SUBJECTS AND METHODS: Impedance aggregometry and light transmission aggregometry were used to determine the effects of dipyrone on ASA treatment in 21 patients. Blood samples were drawn in a 7-day period after the surgery. The cut-off value for high on-treatment platelet reactivity (HTPR) was set at < 65% of aggregation inhibition for impedance aggregometry...
May 13, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29743949/favourable-response-of-serum-prostate-specific-antigen-to-conjugated-oestrogen-in-castrate-resistant-prostate-cancer-in-jamaica
#12
Andrew Condappa, Maxine Gossell-Williams, William Aiken
Conjugated oestrogen is one of the more affordable secondary hormonal options available for castrate-resistant prostate cancer (CRPC) in Jamaica. The present study was conducted to examine the disease response in Jamaican men with CRPC treated with conjugated oestrogen. This study retrospectively reviewed the medical notes of patients who attended the urologic clinic of the University Hospital of the West Indies from 1 January 2009 to 31 December 2013 and a private urology clinic from 2 November 2005 to 3 June 2015 to identify patients diagnosed with CRPC treated with conjugated oestrogen (Premarin ®) as secondary therapy...
2018: Ecancermedicalscience
https://www.readbyqxmd.com/read/29731992/response-to-clopidogrel-is-associated-with-early-neurological-deterioration-after-acute-ischemic-stroke
#13
Xingyang Yi, Jing Lin, Yanfen Wang, Ju Zhou, Qiang Zhou, Chun Wang
Purpose: The relationship between response to clopidogrel and early neurological deterioration (END) after acute ischemic stroke (IS) is not well defined. The aim of present study was to evaluate the associations of clopidogrel resistance (CR) with END, and stratified analyze the effectiveness of clopidogrel alone and clopidogrel plus aspirin for the prevention of END. Results: A total of 375 patients, 144 patients were received clopidogrel alone, 231 patients took clopidogrel plus aspirin...
April 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29692672/effectiveness-of-high-dose-i-v-immunoglobulin-therapy-for-pregnant-women-with-aspirin-heparin-resistant-secondary-antiphospholipid-syndrome
#14
Yoko Maesawa, Masashi Deguchi, Kenji Tanimura, Mayumi Morizane, Yasuhiko Ebina, Hideto Yamada
Purpose: This study aimed to assess the efficacy of high-dose i.v. immunoglobulin (HIVIg) therapy in pregnant women with antiphospholipid syndrome (APS) secondary to systemic lupus erythematosus with a history of pregnancy failure, despite receiving low-dose aspirin plus unfractionated heparin therapy, of which condition being designated as "aspirin-heparin-resistant APS" (AHRAPS). Methods: The HIVIg therapy (20 g/d, 5 days) was performed for the pregnancies of five women with AHRAPS...
April 2018: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29656983/prophylaxis-and-treatment-of-foetal-growth-restriction
#15
REVIEW
Aamod Nawathe, Anna L David
Foetal growth restriction (FGR) and associated placental pathologies such as pre-eclampsia and stillbirth arise in early pregnancy when inadequate remodelling of maternal spiral arteries leads to persistent high-resistance low-flow uteroplacental circulation. Current interventions concentrate on targeting the placental ischaemia-reperfusion injury and oxidative stress associated with an imbalance in angiogenic/anti-angiogenic factors. Recent meta-analyses confirm that aspirin modestly reduces the risk for small-for-gestational-age pregnancy in high-risk women...
May 2018: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/29599304/aspirin-in-the-management-of-patients-with-prostate-cancer-undergoing-radiotherapy-friend-or-foe
#16
REVIEW
Bianca Mascan, Laure Marignol
Aspirin has cyclooxygenase-2 (COX2)-mediated anti-inflammatory and anti-coagulant properties that may confer a positive effect in preventing and limiting the progression of prostate cancer. Prostate cancer has been shown to have poor treatment outcomes due to therapeutic resistance; therefore, COX2 inhibition caused by aspirin could represent an opportunity to augment current therapies. This is particularly of interest to patients undergoing radiation therapy (RT) where inflammation is a common side-effect...
April 2018: Anticancer Research
https://www.readbyqxmd.com/read/29560090/mutation-of-tgf%C3%AE-rii-eliminates-nsaid-cancer-chemoprevention
#17
Juana Martín-López, Pierluigi Gasparini, Kevin Coombes, Carlo M Croce, Gregory P Boivin, Richard Fishel
Non-steroidal anti-inflammatory drugs (NSAIDs) exhibit anti-neoplastic (chemoprevention) activity for sporadic cancers and the hereditary cancer predisposition Lynch syndrome (LS/HNPCC). However, the mechanism of NSAID tumor suppression has remained enigmatic. Defects in the core mismatch repair (MMR) genes MSH2 and MLH1 are the principal drivers of LS/HNPCC. Previous work has demonstrated that the villin - Cre+/- Msh2flox/flox (VpC-Msh2) mouse is a reliable model for LS/HNPCC intestinal tumorigenesis, which is significantly suppressed by treatment with the NSAID aspirin (ASA) similar to human chemoprevention...
February 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29545399/specificity-protein-transcription-factors-and-cancer-opportunities-for-drug-development
#18
Stephen Safe, James L Abbruzzese, Maen Abdelrahim, Erik Hedrick
Specificity protein (Sp) transcription factors (TFs) such as Sp1 are critical for early development but their expression decreases with age and there is evidence that transformation of normal cells to cancer cells is associated with upregulation of Sp1, Sp3 and Sp4 which are highly expressed in cancer cells and tumors. Sp1 is a negative prognostic factor for pancreatic, colon, glioma, gastric, breast, prostate, and lung cancer patients. Functional studies also demonstrate that Sp TFs regulate genes responsible for cancer cell growth, survival, migration/invasion, inflammation and drug resistance, and Sp1, Sp3 and Sp4 are also non-oncogene addiction (NOA) genes and important drug targets...
March 15, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29530996/aspirin-resistance-risk-factors-and-prognostic-significance-in-patients-with-cerebral-small-vessel-disease
#19
Jacek Staszewski, Renata Piusińska-Macoch, Ewa Skrobowska, Bogdan Brodacki, Katarzyna Macek, Adam Stępień
BACKGROUND: The clinical significance of aspirin resistance (AR) in patients with symptomatic cerebrovascular disease is not well known. The aim of this single-center, prospective study was to examine the prevalence, risk factors and prognostic significance of AR in patients with different clinical manifestations of cerebral small vessel disease (CSVD) over 24-month follow-up. METHODS: We studied 104 patients with MRI confirmed CSVD, including those with recent lacunar stroke (LS, n=49), vascular parkinsonism (VaP, n=16) and dementia (VaD, n=39)...
January 2018: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29529091/effects-of-ramadan-fasting-on-aspirin-resistance-in-type-2-diabetic-patients
#20
Wahid Bouida, Kaouthar Beltaief, Houda Baccouche, Mouna Sassi, Zohra Dridi, Imen Trabelsi, Kamel Laaouiti, Taher Chakroun, Ilhem Hellara, Riadh Boukef, Nabil Sakly, Mohsen Hassine, Faouzi Added, Rabie Razgallah, Fadhel Najjar, Semir Nouira
AIMS: Ramadan fasting (RF) may affect aspirin resistance. We conducted this study in patients with cardiovascular risk (CVR) factors to assess the effect of RF on aspirin resistance and explore whether type 2 diabetes mellitus (DM) would influence this effect. METHODS: A total of 177 stable patients with ≥2 CVR factors were recruited. All patients observed RF and were taking aspirin. Physical exam and standard biological tests including glycaemia and serum lipids data were performed before Ramadan (Pre-R), at the last week of Ramadan (R) and four weeks after the end of Ramadan (Post-R)...
2018: PloS One
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