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Nay I, Hutchinson D, Rondina M, Kim K, Kroencke R, Kirkham A, Trujillo T, Tolley ND, Munger M. Prospective, randomized, controlled, trial to assess ASA DOSing by body mass index in HEalthy volunteers (DOSE study). Pharmacotherapy 2023; 43:215-225. [PMID: 36755519 DOI: 10.1002/phar.2777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/10/2023]
Abstract
STUDY OBJECTIVE: Aspirin (ASA) has demonstrated inconsistent results in primary prevention of cardiovascular disease (CVD). Guidelines are also inconsistent in the recommendation of routine ASA use for primary prevention of CVD, but advocate dosing as a "one-size-fits-all" approach. DESIGN An intention-to-treat, double-blind, randomized, controlled, clinical trial comparing three treatment arms of ASA 81, 325, and 500 mg daily dosed for 14 days were evenly randomized across the dosing categories to measure the impact of dosing by body mass index (BMI) (20-24.9, 25-29.9, ≥30 kg/m2 ) on ASA anti-platelet effects. SETTING University Ambulatory Clinic. PATIENTS Healthy volunteers defined as individuals who were medication free without acute or chronic significant health problems. INTERVENTION Change in ASA reactivity unit (ARU), salicylate levels, and thromboxane B2 (TxB2) levels were measured across BMI dosing categories and time. MAIN RESULTS: Fifty-four participants with a mean (±SD) age of 34.4 ± 10.9 years (M:F; 23:31) completed the study. Baseline ARU and TxB2 levels were not significantly different between obese and non-obese individuals. BMI was not a predictor of platelet inhibition. There was no interaction between gender and platelet activation at baseline or following ASA treatment. ASA 81 mg was associated with a lower ARU response (approximate 50% lower response) than either the 325-mg or the 500-mg doses of ASA. TxB2 and salicylate levels exhibited lower trends at 81 mg compared with higher doses. CONCLUSIONS In healthy male and female participants administered ASA for 14 days, obesity is not associated with increased basal platelet activation or ASA resistance. ASA 81 mg was significantly less effective in reducing platelet aggregation compared with ASA 325 and 500 mg, independent of BMI.
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Affiliation(s)
- Isaac Nay
- Department of Pharmacotherapy, University of Utah, Salt Lake City, Utah, USA
| | - Doug Hutchinson
- Department of Pharmacotherapy, University of Utah, Salt Lake City, Utah, USA
| | - Matthew Rondina
- Molecular Medicine Program, Salt Lake City, Utah, USA.,Departments of Internal Medicine and Pathology, Salt Lake City, Utah, USA
| | - Kibum Kim
- University of Illinois at Chicago College of Pharmacy, Chicago, Illinois, USA
| | - Rachel Kroencke
- University of Utah Associated Regional University Pathologists, University of Utah Health, Salt Lake City, Utah, USA
| | - Amanda Kirkham
- University of Utah Associated Regional University Pathologists, University of Utah Health, Salt Lake City, Utah, USA
| | - Toby Trujillo
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Denver, Colorado, USA
| | - Neal D Tolley
- Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Mark Munger
- Department of Pharmacotherapy, University of Utah, Salt Lake City, Utah, USA.,University of Utah Associated Regional University Pathologists, University of Utah Health, Salt Lake City, Utah, USA
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Wang X, Li L, Cui J, Cheng M, Liu M. Myopenic Obesity Determined by Fat Mass Percentage Predicts Risk of Aspirin-Induced Bleeding in Chinese Older Adults. Clin Interv Aging 2023; 18:585-595. [PMID: 37077535 PMCID: PMC10108865 DOI: 10.2147/cia.s405559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/07/2023] [Indexed: 04/21/2023] Open
Abstract
Background Body mass index (BMI) correlates with aspirin-induced bleeding risk. However, skeletal muscle mass (SMM) loss and fat gain commonly occur with aging, making BMI not a reasonable marker of bleeding risk in older individuals. In the present study, we aimed to investigate the prognostic value of myopenic obesity based on the percent of fat mass (%FM) for aspirin-induced bleeding in Chinese patients over 60 years old. Methods We prospectively analyzed 185 patients taking aspirin for primary and secondary prevention of cardiovascular diseases. Body composition parameters were estimated using bioelectrical impedance analysis. We defined myopenic obesity (MO) as a height-adjusted appendicular SMM <7.0 kg/m2 in males and <5.7 kg/m2 in females with a %FM >29% in males and >41% in females or a BMI ≥25 kg/m2. The patients were categorized into four groups by the presence or absence of myopenia and obesity. Results Based on the %FM grouping, the bleeding risk was significantly higher in the MO group, followed by the nonmyopenic obesity, myopenic nonobesity, and nonmyopenic nonobesity groups (P = 0.044). No statistically significant differences in the probability of bleeding events were observed among the four BMI-based groups (P = 0.502). Multivariate Cox analysis indicated that MO (hazard ratio [HR] 2.724, 95% confidence interval [CI] 1.073-6.918, P = 0.035), aspirin dose (100 vs 50 mg/day, HR 2.609, 95% CI 1.291-5.273, P = 0.008), concomitant use of histamine-2 receptor antagonists and proton pump inhibitors (HR 1.777, 95% CI 1.007-3.137, P = 0.047), and hemorrhage history (HR 2.576, 95% CI 1.355-4.897, P = 0.004) were associated with bleeding events independently. Conclusion %FM-based MO was an independent predictor of aspirin-induced bleeding in older Chinese individuals. Reducing %FM rather than BMI should be an optimal strategy for the management of myopenic obesity.
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Affiliation(s)
- Xiting Wang
- Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China
| | - Li Li
- Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China
| | - Jing Cui
- Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China
| | - Mei Cheng
- Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China
| | - Meilin Liu
- Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China
- Correspondence: Meilin Liu, Department of Geriatrics, Peking University First Hospital, Beijing, People’s Republic of China, Email
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Novel approaches to antiplatelet therapy. Biochem Pharmacol 2022; 206:115297. [DOI: 10.1016/j.bcp.2022.115297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 11/20/2022]
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Heffron SP, Windheim J, Barrett TJ, Voora D, Berger JS. Platelet inhibition by low-dose aspirin is not influenced by body mass or weight. Platelets 2022; 33:1208-1213. [PMID: 35768902 PMCID: PMC9976777 DOI: 10.1080/09537104.2022.2087868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 01/27/2023]
Abstract
Aspirin's clinical efficacy may be influenced by body weight and mass. Although inadequate platelet inhibition by aspirin is suggested as responsible, evidence for this in non-diabetic patients is sparse. We investigated the influence of body weight and mass on aspirin's inhibition of platelet aggregation in healthy adults without diabetes. Cohort one (NYU, n = 84) had light transmission aggregometry (LTA) of platelet-rich plasma to submaximal adenosine diphosphate (ADP) and arachidonic acid (AA) before and following 1 week of daily 81 mg non-enteric coated aspirin. Subjects in the validation cohort (Duke, n = 66) were randomized to 81 mg or 325 mg non-enteric coated aspirin for 4 weeks, immediately followed by 4 weeks of the other dose, with LTA to submaximal collagen, ADP, and AA before and after each dosage period. Body mass index (BMI) range was 18.0-57.5 kg/m2 and 25% were obese. Inhibition of platelet aggregation was similar irrespective of BMI, body weight and aspirin dose. There was no correlation between platelet aggregation before or after aspirin with BMI or body weight. Our data demonstrate that aspirin produces potent inhibition of direct and indirect COX1-mediated platelet aggregation in healthy adults without diabetes regardless of body weight or mass - suggesting that other mechanisms explain lower preventive efficacy of low-dose aspirin with increasing body weight/mass.
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Affiliation(s)
- Sean P. Heffron
- NYU Grossman School of Medicine, Leon H. Charney Division of Cardiology, New York, NY
- NYU Grossman School of Medicine, NYU Center for the Prevention of Cardiovascular Disease, New York, NY
| | - Joseph Windheim
- NYU Grossman School of Medicine, Leon H. Charney Division of Cardiology, New York, NY
| | - Tessa J. Barrett
- NYU Grossman School of Medicine, Leon H. Charney Division of Cardiology, New York, NY
| | - Deepak Voora
- Duke Center for Applied Genomics & Precision Medicine, Department of Medicine, Durham, NC
| | - Jeffrey S. Berger
- NYU Grossman School of Medicine, Leon H. Charney Division of Cardiology, New York, NY
- NYU Grossman School of Medicine, NYU Center for the Prevention of Cardiovascular Disease, New York, NY
- NYU Grossman School of Medicine, Department of Surgery, New York, NY
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5
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Giaretta A, Petrucci G, Rocca B, Toffolo GM. Physiologically based modelling of the antiplatelet effect of aspirin: A tool to characterize drug responsiveness and inform precision dosing. PLoS One 2022; 17:e0268905. [PMID: 35976924 PMCID: PMC9385056 DOI: 10.1371/journal.pone.0268905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 05/11/2022] [Indexed: 11/18/2022] Open
Abstract
A computational approach involving mathematical modeling and in silico experiments was used to characterize the determinants of extent and duration of platelet cyclooxygenase (COX)-1 inhibition by aspirin and design precision dosing in patients with accelerated platelet turnover or reduced drug bioavailability. To this purpose, a recently developed physiologically-based pharmacokinetics (PK) and pharmacodynamics (PD) model of low-dose aspirin in regenerating platelets and megakaryocytes, was used to predict the main features and determinants of platelet COX-1 inhibition. The response to different aspirin regimens in healthy subjects and in pathological conditions associated with alterations in aspirin PK (i.e., severely obese subjects) or PD (i.e., essential thrombocytemya patients), were simulated. A model sensitivity analysis was performed to identify the main processes influencing COX-1 dynamics. In silico experiments and sensitivity analyses indicated a major role for megakaryocytes and platelet turnover in determining the extent and duration of COX-1 inhibition by once-daily, low-dose aspirin. They also showed the superiority of reducing the dosing interval vs increasing the once-daily dose in conditions of increased platelet turnover, while suggested specific dose adjustments in conditions of possible reduction in drug bioavailability. In conclusion, the consistency of our model-based findings with experimental data from studies in healthy subjects and patients with essential thrombocythemia supports the potential of our approach for describing the determinants of platelet inhibition by aspirin and informing precision dosing which may guide personalized antithrombotic therapy in different patient populations, especially in those under-represented in clinical trials or in those associated with poor feasibility.
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Affiliation(s)
- Alberto Giaretta
- Department of Information Engineering, University of Padova, Padova, Italy
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
- * E-mail: ,
| | - Giovanna Petrucci
- Department of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Bianca Rocca
- Department of Pharmacology, Catholic University School of Medicine, Rome, Italy
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Wang X, Zhu Q, Wu Y, Li H, Deng X, Cheng J, Zhang Z, Ma Y, Shi T. Effect of body weight on bleeding events of aspirin in ischemic stroke or transient ischemic attack patients. J Clin Pharm Ther 2022; 47:1684-1689. [PMID: 35748660 DOI: 10.1111/jcpt.13722] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/17/2022] [Accepted: 05/29/2022] [Indexed: 01/04/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVES Bleeding is the most common adverse reaction to aspirin and can lead to drug discontinuation or even be life-threatening in the secondary prevention of stroke or transient ischemic attack. The aim of this study was to evaluate risk factors for bleeding adverse reaction of aspirin in ischemic stroke or transient ischemic attack. METHODS This retrospective analysis included patients treated with aspirin (100 mg) as a secondary prevention for ischemic stroke or transient ischemic attack. The bleeding events that occurred during the first year were collected, including gastrointestinal, skin, nasal cavity, gum, and urinary tract bleeding events. Then, univariate and multivariate logistic regression analyses were used to identify independent factors associated with bleeding events of aspirin. RESULTS AND DISCUSSION A total of 578 patients were enrolled in this study, and 58 patients developed bleeding during the first year of secondary prevention. Body weight and combination with selective serotonin reuptake inhibitors were found to be significant risk factors for overall bleeding (p = 0.025 and 0.012). Body weight below 60 kg was a risk factor for overall bleeding and gastrointestinal bleeding events. WHAT IS NEW AND CONCLUSION Patients weighing less than 60 kg were at increased risk of bleeding with 100 mg aspirin for secondary prevention of cerebral infarction transient ischemic attack.
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Affiliation(s)
- Xiaoyu Wang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Qidong Zhu
- Anhui Provincial Children's Hospital, Hefei, China
| | - Yan Wu
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Huiting Li
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xiaomei Deng
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Juan Cheng
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Zhetao Zhang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yini Ma
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Tianlu Shi
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Lin L, Huai J, Li B, Zhu Y, Juan J, Zhang M, Cui S, Zhao X, Ma Y, Zhao Y, Mi Y, Ding H, Chen D, Zhang W, Qi H, Li X, Li G, Chen J, Zhang H, Yu M, Sun X, Yang H. A randomized controlled trial of low-dose aspirin for the prevention of preeclampsia in women at high risk in China. Am J Obstet Gynecol 2022; 226:251.e1-251.e12. [PMID: 34389292 DOI: 10.1016/j.ajog.2021.08.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Low-dose aspirin has been the most widely studied preventive drug for preeclampsia. However, guidelines differ considerably from country to country regarding the prophylactic use of aspirin for preeclampsia. There is limited evidence from large trials to determine the effect of 100 mg of aspirin for preeclampsia screening in women with high-risk pregnancies, based on maternal risk factors, and to guide the use of low-dose aspirin in preeclampsia prevention in China. OBJECTIVE The Low-Dose Aspirin in the Prevention of Preeclampsia in China study was designed to evaluate the effect of 100 mg of aspirin in preventing preeclampsia among high-risk pregnant women screened with maternal risk factors in China, where preeclampsia is highly prevalent, and the status of low-dose aspirin supply is commonly suboptimal. STUDY DESIGN We conducted a multicenter randomized controlled trial at 13 tertiary hospitals from 11 provinces in China between 2016 and 2019. We assumed that the relative reduction in the incidence of preeclampsia was at least 20%, from 20% in the control group to 16% in the aspirin group. Therefore, the targeted recruitment number was 1000 participants. Women were randomly assigned to the aspirin or control group in a 1:1 allocation ratio. Statistical analyses were performed according to an intention-to-treat basis. The primary outcome was the incidence of preeclampsia, diagnosed along with a systolic blood pressure of ≥140 mm Hg or a diastolic blood pressure of ≥90 mm Hg after 20 weeks of gestation, with a previously normal blood pressure (systolic blood pressure of <140 mm Hg and diastolic blood pressure of <90 mm Hg), and complicated by proteinuria. The secondary outcomes included maternal and neonatal outcomes. Logistic regression analysis was used to determine the significance of difference of preeclampsia incidence between the groups for both the primary and secondary outcomes. Interaction analysis was also performed. RESULTS A total of 1000 eligible women were recruited between December 2016 and March 2019, of which the final 898 patients were analyzed (464 participants in the aspirin group, 434 participants in the control group) on an intention-to-treat basis. No significant difference was found in preeclampsia incidence between the aspirin group (16.8% [78/464]) and the control group (17.1% [74/434]; relative risk, 0.986; 95% confidence interval, 0.738-1.317; P=.924). Likewise, adverse maternal and neonatal outcomes did not differ significantly between the 2 groups. Meanwhile, the incidence of postpartum hemorrhage between the 2 groups was similar (6.5% [30/464] in the aspirin group and 5.3% [23/434] in the control group; relative risk, 1.220; 95% confidence interval, 0.720-2.066; P=.459). We did not find any significant differences in preeclampsia incidence between the 2 groups in the subgroup analysis of the different risk factors. CONCLUSION A dosage of 100 mg of aspirin per day, initiated from 12 to 20 gestational weeks until 34 weeks of gestation, did not reduce the incidence of preeclampsia in pregnant women with high-risk factors in China.
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Affiliation(s)
- Li Lin
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Jing Huai
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Boya Li
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Yuchun Zhu
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Juan Juan
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Meihua Zhang
- Department of Obstetrics and Gynecology, Taiyuan Maternal and Child Health Hospital, Taiyuan, Shanxi, China
| | - Shihong Cui
- Department of Obstetrics and Gynecology, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xianlan Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuyan Ma
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yangyu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yang Mi
- Department of Obstetrics and Gynecology, Shaanxi Maternity and Child Health Care Hospital, Shaanxi, China
| | - Hongjuan Ding
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu, China
| | - Dunjin Chen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Weishe Zhang
- Department of Obstetrics and Gynecology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongbo Qi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaotian Li
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Guanlin Li
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Jiahui Chen
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Huijing Zhang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Mengting Yu
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Xiaotong Sun
- Department of Obstetrics and Gynecology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Huixia Yang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China.
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Conzuelo Rodriguez G, Bodnar LM, Brooks MM, Wahed A, Kennedy EH, Schisterman E, Naimi AI. Performance Evaluation of Parametric and Nonparametric Methods When Assessing Effect Measure Modification. Am J Epidemiol 2022; 191:198-207. [PMID: 34409985 DOI: 10.1093/aje/kwab220] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 12/20/2022] Open
Abstract
Effect measure modification is often evaluated using parametric models. These models, although efficient when correctly specified, make strong parametric assumptions. While nonparametric models avoid important functional form assumptions, they often require larger samples to achieve a given accuracy. We conducted a simulation study to evaluate performance tradeoffs between correctly specified parametric and nonparametric models to detect effect modification of a binary exposure by both binary and continuous modifiers. We evaluated generalized linear models and doubly robust (DR) estimators, with and without sample splitting. Continuous modifiers were modeled with cubic splines, fractional polynomials, and nonparametric DR-learner. For binary modifiers, generalized linear models showed the greatest power to detect effect modification, ranging from 0.42 to 1.00 in the worst and best scenario, respectively. Augmented inverse probability weighting had the lowest power, with an increase of 23% when using sample splitting. For continuous modifiers, the DR-learner was comparable to flexible parametric models in capturing quadratic and nonlinear monotonic functions. However, for nonlinear, nonmonotonic functions, the DR-learner had lower integrated bias than splines and fractional polynomials, with values of 141.3, 251.7, and 209.0, respectively. Our findings suggest comparable performance between nonparametric and correctly specified parametric models in evaluating effect modification.
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9
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Halbur CR, Gulbrandsen TR, West CR, Brown TS, Noiseux NO. Weight-Based Aspirin Dosing May Further Reduce the Incidence of Venous Thromboembolism Following Primary Total Joint Arthroplasty. J Arthroplasty 2021; 36:3986-3992.e1. [PMID: 34215460 DOI: 10.1016/j.arth.2021.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/29/2021] [Accepted: 06/08/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Obesity poses a challenge to thromboembolic prophylaxis following total joint arthroplasty (TJA). The purpose of this study is to evaluate a weight-based aspirin dosing regimen for prevention of venous thromboembolism (VTE) following TJA. METHODS This is a retrospective observational study of 2403 patients who underwent primary total hip or knee arthroplasty at one institution. A weight-based aspirin dosing regimen for VTE prophylaxis was administered to 1247 patients: patients weighing ≥120 kg received 325 mg aspirin twice daily (BID) and those weighing <120 kg received 81 mg aspirin BID for 4 weeks. In total, 1156 patients in the comparison cohort received 81 mg aspirin BID. VTE and gastrointestinal bleeding events were identified through chart review at 42 days and 6 months postoperatively. A multivariable logistic regression was performed to adjust for covariates. RESULTS The weight-based aspirin cohort had a significantly lesser incidence of VTE at 42 days (P = .03, relative risk [RR] 0.31, 95% confidence interval 0.12-0.82) and 6 months (P = .03, RR 0.38, 95% confidence interval 0.18-0.80). There was no difference in VTE incidence between total hip arthroplasty and total knee arthroplasty cases (P = .8). There was no difference in gastrointestinal bleeding events between the cohorts at 42 days (P = .69) or 6 months (P = .92). Subanalysis of patients weighing ≥120 kg demonstrated a significant difference between the cohorts with a VTE incidence of 3.48% and 0% in the 81 mg and weight-based cohorts, respectively (P = .02). CONCLUSION Patients prescribed a weight-based aspirin regimen had significantly fewer VTEs after TJA compared to historical controls with an RR reduction of 69% at 6 weeks and 62% at 6 months postoperatively. This suggests the need to factor patient weight when determining postoperative VTE prophylaxis with aspirin.
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Affiliation(s)
- Christopher R Halbur
- Department of Orthopedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA
| | - Trevor R Gulbrandsen
- Department of Orthopedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA
| | | | - Timothy S Brown
- Department of Orthopedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA
| | - Nicolas O Noiseux
- Department of Orthopedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA
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Czajka P, Fitas A, Jakubik D, Eyileten C, Gasecka A, Wicik Z, Siller-Matula JM, Filipiak KJ, Postula M. MicroRNA as Potential Biomarkers of Platelet Function on Antiplatelet Therapy: A Review. Front Physiol 2021; 12:652579. [PMID: 33935804 PMCID: PMC8081881 DOI: 10.3389/fphys.2021.652579] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/22/2021] [Indexed: 11/25/2022] Open
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs, able to regulate cellular functions by specific gene modifications. Platelets are the major source for circulating miRNAs, with significant regulatory potential on cardiovascular pathophysiology. MiRNAs have been shown to modify the expression of platelet proteins influencing platelet reactivity. Circulating miRNAs can be determined from plasma, serum, or whole blood, and they can be used as diagnostic and prognostic biomarkers of platelet reactivity during antiplatelet therapy as well as novel therapeutic targets in cardiovascular diseases (CVDs). Herein, we review diagnostic and prognostic value of miRNAs levels related to platelet reactivity based on human studies, presenting its interindividual variability as well as the substantial role of genetics. Furthermore, we discuss antiplatelet treatment in the context of miRNAs alterations related to pathways associated with drug response.
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Affiliation(s)
- Pamela Czajka
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland
| | - Alex Fitas
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland
| | - Daniel Jakubik
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland
| | - Ceren Eyileten
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland
| | - Aleksandra Gasecka
- First Chair and Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Zofia Wicik
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland.,Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, São Paulo, Brazil
| | - Jolanta M Siller-Matula
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland.,Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Krzysztof J Filipiak
- First Chair and Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Marek Postula
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology, Warsaw, Poland
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Xu H, Bonaca MP, Goodrich E, Scirica BM, Morrow DA. Efficacy and safety of vorapaxar for secondary prevention in low body weight in patients with atherosclerosis: analyses from the TRA 2°P-TIMI 50 Trial. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2021; 10:190–199. [PMID: 31642690 DOI: 10.1177/2048872619883354] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/28/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Vorapaxar inhibits the thrombin-mediated activation of platelets, reduces thrombotic events in patients with myocardial infarction or peripheral arterial disease while increasing bleeding. In the TRA 2°P-TIMI 50 trial, we observed a nominally significant interaction between low body weight and the reduced efficacy of vorapaxar. METHODS We investigated the relationship between body weight and the efficacy and safety of vorapaxar within a multinational, randomized, double-blind, placebo-controlled trial of vorapaxar in patients with atherosclerosis. This analysis was performed among 20,138 patients with a clinical indication for vorapaxar. RESULTS Compared with patients weighing 60 kg or more, patients weighing less than 60 kg were older, more frequently women, Asian and had renal insufficiency (each P<0.001). The efficacy of vorapaxar with respect to cardiovascular death, myocardial infarction and stroke showed a significant interaction with patients' weight (Pinteraction<0.03). However among patients younger than 65 years, vorapaxar reduced the primary endpoint regardless of weight (weight ≥60 kg: 6.4% vs. 8.1%, hazard ratio (HR) 0.75, 95% confidence interval (CI) 0.65-0.86; weight <60 kg: 5.4% vs. 7.2%, HR 0.75, 95% CI 0.37-1.49, Pinteraction=0.98). Among patients aged 65 years and older, the efficacy of vorapaxar diminished in patients weighing less than 60 kg (high weight: 10.4% vs. 12.6%, HR 0.81, 95% CI 0.69-0.95; low weight: 16.1% vs. 9.0%, HR 1.62, 95% CI 0.95-2.76, Pinteraction=0.01). The relative increase in bleeding with vorapaxar was not modified by weight (all Pinteraction>0.05). CONCLUSIONS Vorapaxar reduced vascular events and improved net clinical outcome regardless of body weight in younger patients. Elderly patients with low weight may not be good candidates for aggressive secondary prevention with vorapaxar added to standard therapy. CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov Unique identifier: NCT00526474.
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Affiliation(s)
- Haiyan Xu
- TIMI Study Group, Brigham and Women's Hospital, USA
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12
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Xie S, Wang Y, Huang Y, Yang B. Mechanisms of the antiangiogenic effects of aspirin in cancer. Eur J Pharmacol 2021; 898:173989. [PMID: 33657423 DOI: 10.1016/j.ejphar.2021.173989] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 02/14/2021] [Accepted: 02/22/2021] [Indexed: 01/04/2023]
Abstract
Aspirin is an old drug extracted from willow bark and is widely used for the prevention and treatment of cardiovascular diseases. Accumulating evidence has shown that aspirin use may significantly reduce the angiogenesis of cancer; however, the mechanism of the association between angiogenesis and aspirin is complex. Although COX-1 is widely known as a target of aspirin, several studies reveal other antiangiogenic targets of aspirin, such as angiotensin II, glucose transporter 1, heparanase, and matrix metalloproteinase. In addition, some data indicates that aspirin may produce antiangiogenic effects after acting in different cell types, such as endothelial cells, platelets, pericytes, and macrophages. In this review, we concentrate on research regarding the antiangiogenic effects of aspirin in cancer, and we discuss the molecular mechanisms of aspirin and its metabolites. Moreover, we discuss some mechanisms through which aspirin treatment may normalize existing blood vessels, including preventing the disintegration of endothelial adheres junctions and the recruitment of pericytes. We also address the antiangiogenic effects and the underlying mechanisms of aspirin derivatives, which are aimed at improving safety and efficacy.
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Affiliation(s)
- Shiyuan Xie
- College of Pharmacy, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Youqiong Wang
- College of Pharmacy, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Yixuan Huang
- College of Pharmacy, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Bin Yang
- College of Pharmacy, Guangxi Medical University, Nanning, 530021, Guangxi, PR China.
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Joharatnam-Hogan N, Cafferty FH, Macnair A, Ring A, Langley RE. The role of aspirin in the prevention of ovarian, endometrial and cervical cancers. WOMEN'S HEALTH (LONDON, ENGLAND) 2020; 16:1745506520961710. [PMID: 33019903 PMCID: PMC7543116 DOI: 10.1177/1745506520961710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 07/30/2020] [Accepted: 09/07/2020] [Indexed: 12/12/2022]
Abstract
Drug repurposing is the application of an existing licenced drug for a new indication and potentially provides a faster and cheaper approach to developing new anti-cancer agents. Gynaecological cancers contribute significantly to the global cancer burden, highlighting the need for low cost, widely accessible therapies. A large body of evidence supports the role of aspirin as an anti-cancer agent, and a number of randomized trials are currently underway aiming to assess the potential benefit of aspirin in the treatment of cancer. This review summarizes the evidence underpinning aspirin use for the prevention of the development and recurrence of gynaecological cancers (ovarian, endometrial and cervical) and potential mechanisms of action.
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Affiliation(s)
- Nalinie Joharatnam-Hogan
- MRC Clinical Trials Unit, University College London, Institute of Clinical Trials & Methodology, London, UK
| | - Fay H Cafferty
- MRC Clinical Trials Unit, University College London, Institute of Clinical Trials & Methodology, London, UK
| | - Archie Macnair
- MRC Clinical Trials Unit, University College London, Institute of Clinical Trials & Methodology, London, UK
| | - Alistair Ring
- Royal Marsden Hospital, NHS Foundation Trust, London, UK
| | - Ruth E Langley
- MRC Clinical Trials Unit, University College London, Institute of Clinical Trials & Methodology, London, UK
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14
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Cea Soriano L, Vora P, Soriano-Gabarró M, García Rodríguez LA. The effect of low-dose aspirin on colorectal cancer prevention and gastrointestinal bleeding according to bodyweight and body mass index: Analysis of UK primary care data. Int J Cardiol 2019; 297:135-139. [PMID: 31515060 DOI: 10.1016/j.ijcard.2019.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/17/2019] [Accepted: 08/02/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Meta-analysis of trial data suggests that in primary cardiovascular disease (CVD) prevention bodyweight modifies low-dose aspirin's effects on colorectal cancer (CRC) and major bleeding risk. We sought to investigate whether these effects are seen in patients with or without CVD in routine clinical practice by undertaking sub-analyses of data from two cohort studies with nested-case-control analyses. METHODS We followed ~200,000 new users of low-dose aspirin (75-300 mg/day) and a matched cohort of non-users to identify incident cases of CRC/upper gastrointestinal bleeding (UGIB). Adjusted relative risks (RRs) with 95% confidence intervals (CIs) were calculated for current vs. non-use of low-dose aspirin using logistic regression stratified by bodyweight/body mass index (BMI) strata. RESULTS RRs (95% CIs) for CRC by bodyweight were: 0.60 (0.50-0.72) for ≤70 kg, 0.68 (0.60-0.76) for >70 kg; and by BMI were 0.60 (0.52-0.68) for ≤28 kg/m2, 0.76 (0.64-0.89) for >28 kg/m2. For UGIB, estimates were: 1.49 (1.28-1.74) for ≤90 kg, 1.78 (1.29-2.45) for >90 kg/m2, 1.44 (1.21-1.72) for ≤28 kg/m2, 1.72 (1.38-2.16) for >28 kg/m2. Results were similar in the primary CVD prevention population. CONCLUSION Our findings suggest that the effects of low-dose aspirin in reducing CRC risk and increasing UGIB risk are not modified by bodyweight/BMI.
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Affiliation(s)
- Lucía Cea Soriano
- Spanish Centre for Pharmacoepidemiologic Research (CEIFE), Madrid, Spain; Department of Public Health and Maternal and Child Health, Faculty of Medicine, Complutense University of Madrid, Spain.
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15
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Loomans-Kropp HA, Pinsky P, Cao Y, Chan AT, Umar A. Association of Aspirin Use With Mortality Risk Among Older Adult Participants in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial. JAMA Netw Open 2019; 2:e1916729. [PMID: 31800071 PMCID: PMC6902761 DOI: 10.1001/jamanetworkopen.2019.16729] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
IMPORTANCE Aspirin use has been associated with reduced risk of cancer mortality, particularly of the colorectum. However, aspirin efficacy may be influenced by biological characteristics, such as obesity and age. With the increasing prevalence of obesity and conflicting data regarding the effect of aspirin in older adults, understanding the potential association of aspirin use with cancer mortality according to body mass index (BMI) and age is imperative. OBJECTIVES To investigate the association of aspirin use with risk of all-cause, any cancer, gastrointestinal (GI) cancer, and colorectal cancer (CRC) mortality among older adults and to perform an exploratory analysis of the association of aspirin use with mortality stratified by BMI. DESIGN, SETTING, PARTICIPANTS This cohort study evaluated aspirin use among participants aged 65 years and older in the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial at baseline (November 8, 1993, to July 2, 2001) and follow-up (2006-2008). Analysis began in late 2018 and was completed in September 2019. MAIN OUTCOMES AND MEASURES All-cause, any cancer, GI cancer, or CRC mortality. Multivariable hazard ratios (HRs) and 95% CIs were calculated using time-varying Cox proportional hazards regression modeling, adjusting for additional factors. RESULTS A total of 146 152 individuals (mean [SD] age at baseline, 66.3 [2.4] years; 74 742 [51.1%] women; 129 446 [88.6%] non-Hispanic white) were included in analysis. The median (interquartile range) follow-up time was 12.5 (8.7-16.4) years, encompassing 1 822 164 person-years. Compared with no use, aspirin use 1 to 3 times per month was associated with reduced risk of all-cause mortality (HR, 0.84; 95% CI, 0.80-0.88; P < .001) and cancer mortality (HR, 0.87; 95% CI, 0.81-0.94; P < .001). Aspirin use 3 or more times per week was associated with decreased risk of mortality of all causes (HR, 0.81; 95% CI, 0.80-0.83; P < .001), any cancer (HR, 0.85; 95% CI, 0.81-0.88; P < .001), GI cancer (HR, 0.75; 95% CI, 0.66-0.84; P < .001), and CRC (HR, 0.71; 95% CI, 0.61-0.84; P < .001). When stratified by BMI (calculated as weight in kilograms divided by height in meters squared), aspirin use 3 or more times per week among individuals with BMI 20 to 24.9 was associated with reduced risk of all-cause mortality (HR, 0.82; 95% CI, 0.78-0.85; P < .001) and any cancer mortality (HR, 0.86; 95% CI, 0.79-0.82; P < .001). Among individuals with BMI 25 to 29.9, aspirin use 3 or more times per week was associated with reduced risk of all-cause mortality (HR, 0.82; 95% CI, 0.79-0.85; P < .001), any cancer mortality (HR, 0.86; 95% CI, 0.81-0.91; P < .001), GI cancer mortality (HR, 0.72; 95% CI, 0.60-0.86; P < .001), and CRC mortality (HR, 0.66; 95% CI, 0.51-0.85; P = .001). CONCLUSIONS AND RELEVANCE In this cohort study, aspirin use 3 or more times per week was associated with a reduction in all-cause, cancer, GI cancer and CRC mortality in older adults.
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Affiliation(s)
- Holli A Loomans-Kropp
- Cancer Prevention Fellowship Program, Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
- Gastrointestinal and Other Cancers Branch, Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
| | - Paul Pinsky
- Early Detection Research Branch, Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
| | - Yin Cao
- Siteman Cancer Center, Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Andrew T Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Harvard Medical School, Boston
- Division of Gastroenterology, Massachusetts General Hospital, Boston
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Asad Umar
- Gastrointestinal and Other Cancers Branch, Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
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El Haouari M. Platelet Oxidative Stress and its Relationship with Cardiovascular Diseases in Type 2 Diabetes Mellitus Patients. Curr Med Chem 2019; 26:4145-4165. [PMID: 28982316 DOI: 10.2174/0929867324666171005114456] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 06/07/2017] [Accepted: 06/07/2017] [Indexed: 01/01/2023]
Abstract
Enhanced platelet activation and thrombosis are linked to various cardiovascular diseases (CVD). Among other mechanisms, oxidative stress seems to play a pivotal role in platelet hyperactivity. Indeed, upon stimulation by physiological agonists, human platelets generate and release several types of reactive oxygen species (ROS) such as O2 -, H2O2 or OH-, further amplifying the platelet activation response via various signalling pathways, including, formation of isoprostanes, Ca2+ mobilization and NO inactivation. Furthermore, excessive platelet ROS generation, incorporation of free radicals from environment and/or depletion of antioxidants induce pro-oxidant, pro-inflammatory and platelet hyperaggregability effects, leading to the incidence of cardiovascular events. Here, we review the current knowledge regarding the effect of oxidative stress on platelet signaling pathways and its implication in CVD such as type 2 diabetes mellitus. We also summarize the role of natural antioxidants included in vegetables, fruits and medicinal herbs in reducing platelet function via an oxidative stress-mediated mechanism.
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Affiliation(s)
- Mohammed El Haouari
- Centre Regional des Metiers de l'Education et de la Formation de Taza (CRMEF - Taza), B.P: 1178 - Taza Gare, Morocco
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17
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Ardeshna D, Khare S, Jagadish PS, Bhattad V, Cave B, Khouzam RN. The dilemma of aspirin resistance in obese patients. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:404. [PMID: 31660303 DOI: 10.21037/atm.2019.07.52] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aspirin resistance (AR) commonly refers to the concept of reduced aspirin efficacy in preventing cardiovascular disease and platelet inhibition. Obesity increases the risk of heart disease three- to four-fold and has been associated with AR. Aspirin is used as a tool for both primary and secondary prevention, but recent studies suggest that its lack of efficacy for primary prevention is partly attributable to obesity. Several mechanisms have been described that contribute to AR in obese patients using pharmacokinetics and pharmacodynamics. AR may be attenuated through weight loss, alternative dosing regimens, and different drug formulations. With the global rise of obesity, it is imperative to find preventive therapies that adequately address atherosclerotic cardiovascular disease (ASCVD) risk in this population.
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Affiliation(s)
- Devarshi Ardeshna
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sarthak Khare
- Department of Medicine, St Elizabeth's Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Pooja S Jagadish
- Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Venugopal Bhattad
- Department of Cardiovascular Diseases, East Tennessee State University, Johnson City, TN, USA
| | - Brandon Cave
- Department of Pharmacy, Methodist University Hospital, Memphis, TN, USA
| | - Rami N Khouzam
- Division of Cardiovascular Diseases, Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
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18
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Patrono C, Rocca B. Measurement of Thromboxane Biosynthesis in Health and Disease. Front Pharmacol 2019; 10:1244. [PMID: 31736753 PMCID: PMC6832017 DOI: 10.3389/fphar.2019.01244] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 09/27/2019] [Indexed: 12/17/2022] Open
Abstract
Thromboxane (TX) A2 is a chemically unstable lipid mediator involved in several pathophysiologic processes, including primary hemostasis, atherothrombosis, inflammation, and cancer. In human platelets, TXA2 is the major arachidonic acid derivative via the cyclooxygenase (COX)-1 pathway. Assessment of platelet TXA2 biosynthesis can be performed ex vivo through measurement of serum TXB2, an index of platelet COX-1 activity, as well as in vivo through measurement of urinary enzymatic metabolites, a non-invasive index of platelet activation. This article reviews the main findings of four decades of clinical investigation based on these analytical approaches, focusing on the measurement of TXA2 metabolites to characterize the pathophysiologic role of transiently or persistently enhanced platelet activation and to describe the clinical pharmacology of COX-1 inhibition in health and disease.
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Affiliation(s)
- Carlo Patrono
- Department of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Bianca Rocca
- Department of Pharmacology, Catholic University School of Medicine, Rome, Italy
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19
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Petrucci G, Zaccardi F, Giaretta A, Cavalca V, Capristo E, Cardillo C, Pitocco D, Porro B, Schinzari F, Toffolo G, Tremoli E, Rocca B. Obesity is associated with impaired responsiveness to once-daily low-dose aspirin and in vivo platelet activation. J Thromb Haemost 2019; 17:885-895. [PMID: 30933424 DOI: 10.1111/jth.14445] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 03/28/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND The prevalence and degree of obesity is rising worldwide, increases cardiovascular risk, modifies body composition and organ function, and potentially affects the pharmacokinetics and/or pharmacodynamics of drugs. OBJECTIVES To investigate the pharmacodynamics of once-daily low-dose aspirin in healthy obese subjects, and to assess whether body weight (BW) and body mass index (BMI) affect the pharmacology of aspirin. PATIENTS/METHODS Otherwise healthy, obese (BMI > 30 kg/m2 ) subjects were studied before and after 3-4 weeks of 100-mg once-daily aspirin intake. Aspirin pharmacodynamics were assessed according to serum thromboxane (TX) B2 levels measured at 4 hours, 24 hours (i.e., posologic interval) and 48 hours after the last witnessed intake; age-matched and sex-matched non-obese controls were included. A previously calibrated pharmacokinetic/pharmacodynamic in silico model of aspirin was used to fit serum TXB2 data from obese subjects. At baseline, the major urinary TXA2 and prostacyclin metabolites, urinary isoprostane and plasma inflammatory biomarkers were measured. RESULTS In 16 obese subjects (aged 47 ± 11 years; BMI of 39.4 ± 5.1 kg/m2 ), residual serum TXB2 values between 4 and 48 hours after aspirin intake were increased 3- to 5-fold as compared with controls. At 24 hours, the residual serum TXB2 level was log-linearly associated with body size over a wide range of BMI and BW values, without any apparent threshold. The in silico model predicted that reduced aspirin bioavailability would be inversely related to body size and rescued by 200 mg of aspirin once daily or 85 mg twice daily. Baseline urinary TXA2 metabolite, isoprostane and plasma C-reactive protein levels were significantly increased in obese subjects. CONCLUSIONS Obesity is associated with impaired aspirin responsiveness, largely because of body size. Impaired inhibition of platelet activation by conventional low-dose aspirin may affect antithrombotic efficacy.
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Affiliation(s)
- Giovanna Petrucci
- Istituto di Farmacologia, Università Cattolica, Rome, Italy
- Fondazione Policlinico Universitario IRCCS, A. Gemelli, Rome, Italy
| | | | - Alberto Giaretta
- Department of Information Engineering, University of Padova, Padova, Italy
| | | | - Esmeralda Capristo
- Fondazione Policlinico Universitario IRCCS, A. Gemelli, Rome, Italy
- Internal Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Carmine Cardillo
- Fondazione Policlinico Universitario IRCCS, A. Gemelli, Rome, Italy
- Istituto di Patologia Medica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Dario Pitocco
- Fondazione Policlinico Universitario IRCCS, A. Gemelli, Rome, Italy
- Diabetology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | | | - Francesca Schinzari
- Istituto di Patologia Medica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gianna Toffolo
- Department of Information Engineering, University of Padova, Padova, Italy
| | | | - Bianca Rocca
- Istituto di Farmacologia, Università Cattolica, Rome, Italy
- Fondazione Policlinico Universitario IRCCS, A. Gemelli, Rome, Italy
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Parker WA, Orme RC, Hanson J, Stokes HM, Bridge CM, Shaw PA, Sumaya W, Thorneycroft K, Petrucci G, Porro B, Judge HM, Ajjan RA, Rocca B, Storey RF. Very-low-dose twice-daily aspirin maintains platelet inhibition and improves haemostasis during dual-antiplatelet therapy for acute coronary syndrome. Platelets 2019; 30:148-157. [PMID: 30759035 PMCID: PMC6425913 DOI: 10.1080/09537104.2019.1572880] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/04/2019] [Accepted: 01/11/2019] [Indexed: 01/11/2023]
Abstract
Higher aspirin doses may be inferior in ticagrelor-treated acute coronary syndrome (ACS) patients and reducing bleeding risk whilst maintaining antithrombotic benefits could improve outcomes. We characterized the pharmacodynamics of a novel dual-antiplatelet-therapy regimen consisting of very-low-dose twice-daily (BD) aspirin with standard-dose ticagrelor. A total of 20 ticagrelor-treated ACS patients entered a randomized crossover to take aspirin 20 mg BD (12-hourly) during one 14-day period and 75 mg once-daily (OD) in the other. After 14 days of treatment, serum thromboxane (TX)B2 and light-transmittance aggregometry were assessed pre- and 2 h post-morning-dose, bleeding time was measured post-dose, and TXA2 and prostacyclin stable metabolites were measured in urine collected 2 h post-morning-dose. Data are expressed as mean ± SD. After 14 days treatment, serum TXB2 levels were significantly greater 2 h post-dosing with aspirin 20 mg BD vs. 75 mg OD (3.0 ± 3.6 ng/mL vs. 0.8 ± 1.9 ng/mL; p = 0.018) whereas pre-dosing levels were not significantly different (3.5 ± 4.1 ng/mL vs. 2.5 ± 3.1 ng/mL, p = 0.23). 1-mmol/L arachidonic acid-induced platelet aggregation was similarly inhibited by both regimens pre-dose (8.5 ± 14.3% vs. 5.1 ± 3.6%, p = 0.24) and post-dose (8.7 ± 14.2% vs. 6.6 ± 5.3%; p = 0.41). Post-dose bleeding time was shorter with 20 mg BD (680 ± 306 s vs. 834 ± 386 s, p = 0.02). Urinary prostacyclin and TX metabolite excretion were not significantly different. In conclusion, compared to aspirin 75 mg OD, aspirin 20 mg BD provided consistent inhibition of platelet TXA2 release and aggregation, and improved post-dose hemostasis, in ticagrelor-treated ACS patients. Further studies are warranted to assess whether this regimen improves the balance of clinical efficacy and safety.
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Affiliation(s)
- William A.E. Parker
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Rachel C. Orme
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Jessica Hanson
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Hannah M. Stokes
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Claire M. Bridge
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Patricia A. Shaw
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Wael Sumaya
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Kirstie Thorneycroft
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Giovanna Petrucci
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Benedetta Porro
- Centro Cardiologico Monzino, Istituto di Ricovero e Cura a Carattere Scientifico Cardiologico Monzino, Milan, Italy
| | - Heather M. Judge
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Ramzi A. Ajjan
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Bianca Rocca
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Robert F. Storey
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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21
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Laboratory Monitoring of Antiplatelet Therapy. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.00036-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dannenberg L, Petzold T, Achilles A, Naguib D, Zako S, Helten C, M'Pembele R, Mourikis P, Podsvyadek Y, Grandoch M, Levkau B, Zeus T, Kelm M, Hohlfeld T, Polzin A. Dose reduction, oral application, and order of intake to preserve aspirin antiplatelet effects in dipyrone co-medicated chronic artery disease patients. Eur J Clin Pharmacol 2018; 75:13-20. [PMID: 30251061 DOI: 10.1007/s00228-018-2560-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/17/2018] [Indexed: 01/22/2023]
Abstract
BACKGROUND Dipyrone comedication in aspirin-treated patients is associated with impaired pharmacodynamic response to aspirin (high on-treatment platelet reactivity [HTPR]). Additionally, in small observational studies, an association with impaired outcome has been described. In this uncontrolled, hypothesis-generating study, we aimed to investigate strategies to prevent this drug-drug interaction in patients with coronary artery disease (CAD). METHODS We analyzed pharmacodynamic response to aspirin in 80 dipyrone co-medicated CAD patients. Aspirin antiplatelet effects were measured using arachidonic acid (AA)-induced light-transmission aggregometry (LTA). Platelet reactivity was associated with daily dose, administration form, and frequency. Additionally, we conducted a time-series analysis in patients with HTPR to aspirin with re-evaluation of pharmacodynamic response to aspirin after 5 days. RESULTS Patients' mean age was 75.5 ± 9.8 years. Forty-three (54%) were male, 22 (27.5%) obese, and 38 (47.5%) diabetics. Baseline characteristics, cardiovascular risk factors, comorbidities, comedication, or laboratory parameters did not differ between patients with or without HTPR. HTPR to aspirin occurred in 34 out of 80 patients (42.5%). The incidence of HTPR was associated with dipyrone daily dose (< 1 g/day: HTPR 20% vs. > 3 g/day: HTPR 50%, p > 0.0001) and form of administration (i.v. 87.5% vs. oral 37.5%; p < 0.0001). A strict order of intake (aspirin 30 min prior to dipyrone) restored aspirin antiplatelet effects in all patients (HTPR before 100% vs. HTPR after 0%, p = 0.0002). CONCLUSION This study shows that dipyrone should be used with caution in aspirin-treated patients. If dipyrone seems indispensable, the lowest effective dose and a strict order of intake seem favorable.
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Affiliation(s)
- Lisa Dannenberg
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany.
| | - Tobias Petzold
- Department of Cardiology, LMU München, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
| | - Alina Achilles
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - David Naguib
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Saif Zako
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Carolin Helten
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - René M'Pembele
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Philipp Mourikis
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Yanina Podsvyadek
- Institute for Pharmacology and Clinical Pharmacology, Heinrich Heine University, Düsseldorf, Germany
| | - Maria Grandoch
- Institute for Pharmacology and Clinical Pharmacology, Heinrich Heine University, Düsseldorf, Germany
| | - Bodo Levkau
- West German Heart and Vascular Center, University Hospital Essen, University of Duisburg-Essen, Institute of Pathophysiology, Essen, Germany
| | - Tobias Zeus
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Malte Kelm
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
| | - Thomas Hohlfeld
- Institute for Pharmacology and Clinical Pharmacology, Heinrich Heine University, Düsseldorf, Germany
| | - Amin Polzin
- Division of Cardiology, Pulmonology, and Vascular Medicine, Heinrich Heine University Medical Center Dusseldorf, Düsseldorf, Germany
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Rothwell PM, Cook NR, Gaziano JM, Price JF, Belch JFF, Roncaglioni MC, Morimoto T, Mehta Z. Effects of aspirin on risks of vascular events and cancer according to bodyweight and dose: analysis of individual patient data from randomised trials. Lancet 2018; 392:387-399. [PMID: 30017552 PMCID: PMC6083400 DOI: 10.1016/s0140-6736(18)31133-4] [Citation(s) in RCA: 226] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/11/2018] [Accepted: 05/15/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND A one-dose-fits-all approach to use of aspirin has yielded only modest benefits in long-term prevention of cardiovascular events, possibly due to underdosing in patients of large body size and excess dosing in patients of small body size, which might also affect other outcomes. METHODS Using individual patient data, we analysed the modifying effects of bodyweight (10 kg bands) and height (10 cm bands) on the effects of low doses (≤100 mg) and higher doses (300-325 mg or ≥500 mg) of aspirin in randomised trials of aspirin in primary prevention of cardiovascular events. We stratified the findings by age, sex, and vascular risk factors, and validated them in trials of aspirin in secondary prevention of stroke. Additionally, we assessed whether any weight or height dependence was evident for the effect of aspirin on 20-year risk of colorectal cancer or any in-trial cancer. RESULTS Among ten eligible trials of aspirin in primary prevention (including 117 279 participants), bodyweight varied four-fold and trial median weight ranged from 60·0 kg to 81·2 kg (p<0·0001). The ability of 75-100 mg aspirin to reduce cardiovascular events decreased with increasing weight (pinteraction=0·0072), with benefit seen in people weighing 50-69 kg (hazard ratio [HR] 0·75 [95% CI 0·65-0·85]) but not in those weighing 70 kg or more (0·95 [0·86-1·04]; 1·09 [0·93-1·29] for vascular death). Furthermore, the case fatality of a first cardiovascular event was increased by low-dose aspirin in people weighing 70 kg or more (odds ratio 1·33 [95% CI 1·08-1·64], p=0·0082). Higher doses of aspirin (≥325 mg) had the opposite interaction with bodyweight (difference pinteraction=0·0013), reducing cardiovascular events only at higher weight (pinteraction=0·017). Findings were similar in men and women, in people with diabetes, in trials of aspirin in secondary prevention, and in relation to height (pinteraction=0·0025 for cardiovascular events). Aspirin-mediated reductions in long-term risk of colorectal cancer were also weight dependent (pinteraction=0·038). Stratification by body size also revealed harms due to excess dosing: risk of sudden death was increased by aspirin in people at low weight for dose (pinteraction=0·0018) and risk of all-cause death was increased in people weighing less than 50 kg who were receiving 75-100 mg aspirin (HR 1·52 [95% CI 1·04-2·21], p=0·031). In participants aged 70 years or older, the 3-year risk of cancer was also increased by aspirin (1·20 [1·03-1·47], p=0·02), particularly in those weighing less than 70 kg (1·31 [1·07-1·61], p=0·009) and consequently in women (1·44 [1·11-1·87], p=0·0069). INTERPRETATION Low doses of aspirin (75-100 mg) were only effective in preventing vascular events in patients weighing less than 70 kg, and had no benefit in the 80% of men and nearly 50% of all women weighing 70 kg or more. By contrast, higher doses of aspirin were only effective in patients weighing 70 kg or more. Given that aspirin's effects on other outcomes, including cancer, also showed interactions with body size, a one-dose-fits-all approach to aspirin is unlikely to be optimal, and a more tailored strategy is required. FUNDING Wellcome Trust and National Institute for Health Research Oxford Biomedical Research Centre.
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Affiliation(s)
- Peter M Rothwell
- Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neuroscience, University of Oxford, Oxford, UK.
| | - Nancy R Cook
- Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | | | - Jacqueline F Price
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Jill F F Belch
- Institute of Cardiovascular Research, Vascular and Inflammatory Diseases Research Unit, University Division of Medicine and Therapeutics, Ninewells Hospital and Medical School, Dundee, UK
| | | | - Takeshi Morimoto
- Department of Clinical Epidemiology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Ziyah Mehta
- Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neuroscience, University of Oxford, Oxford, UK
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Casado-Arroyo R. Aspirin and diabetes mellitus in primary prevention: the Endless Conundrum. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:218. [PMID: 30023381 DOI: 10.21037/atm.2018.03.26] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rubén Casado-Arroyo
- Department of Cardiology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
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25
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Rocca B, Fox KAA, Ajjan RA, Andreotti F, Baigent C, Collet JP, Grove EL, Halvorsen S, Huber K, Morais J, Patrono C, Rubboli A, Seljeflot I, Sibbing D, Siegbahn A, Ten Berg J, Vilahur G, Verheugt FWA, Wallentin L, Weiss TW, Wojta J, Storey RF. Antithrombotic therapy and body mass: an expert position paper of the ESC Working Group on Thrombosis. Eur Heart J 2018; 39:1672-1686f. [PMID: 29509886 DOI: 10.1093/eurheartj/ehy066] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 02/08/2018] [Indexed: 02/11/2024] Open
Affiliation(s)
- Bianca Rocca
- Institute of Pharmacology, Catholic University School of Medicine, Largo Francesco Vito 1, 00168 Rome, Italy
| | - Keith A A Fox
- Centre for Cardiovascular Science, University and Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh EH16 4SA, UK
| | - Ramzi A Ajjan
- Leeds Institute for Cardiovascular and Metabolic Medicine, the LIGHT Laboratories, University of Leeds, Leeds LS2?9JT, UK
| | - Felicita Andreotti
- Cardiovascular Department, Catholic University Hospital, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Colin Baigent
- MRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Richard Doll Building, Old Road Campus, Roosevelt Drive, Oxford OX3 7LF, UK
| | - Jean-Philippe Collet
- Institute of Cardiology, Pitié-Salpêtrière Hospital (AP-HP), Sorbonne Université Paris 06 (UPMC), ACTION Study Group, INSERM UMR_S 1166, Groupe Hospitalier Pitié-Salpêtrière, 47-83 Bd de l'hopital, 75013 Paris, France
| | - Erik L Grove
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Palle Juul-Jensens Boulevard 82, 8200 Aarhus; Denmark
| | - Sigrun Halvorsen
- Department of Cardiology, Oslo University Hospital Ulleval and University of Oslo, P.O. Box 1171 Blindern, 0318 Oslo, Norway
| | - Kurt Huber
- 3rd Department of Medicine, Cardiology and Intensive Care Medicine, Wilhelminenhospital, Montleartstrasse 37, A-1160 Vienna and Sigmund Freud University, Medical School, Kelsenstrasse 2, A-1030 Vienna, Austria
| | - João Morais
- Division of Cardiology, Leiria Hospital Center, R. de Santo André, 2410-197 Leiria, Portugal
| | - Carlo Patrono
- Institute of Pharmacology, Catholic University School of Medicine, Largo Francesco Vito 1, 00168 Rome, Italy
| | - Andrea Rubboli
- Division of Cardiology, Laboratory of Interventional Cardiology, Ospedale Maggiore, Largo Nigrisoli 2, 40133 Bologna, Italy
| | - Ingebjorg Seljeflot
- Department of Cardiology, Center for Clinical Heart Research, Oslo University Hospital Ullevål and University of Oslo, P.O. Box 1171 Blindern, 0318 Oslo, Norway
| | - Dirk Sibbing
- Department of Cardiology, Munich University Clinic, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Marchioninistrasse 15, 81377 Munich, Germany
| | - Agneta Siegbahn
- Department of Medical Sciences, Clinical Chemistry, Uppsala University, 751 85 Uppsala, Sweden
| | - Jurrien Ten Berg
- Department of Cardiology, St Antonius Hospital, Koekoekslaan 1, 3435 CM Nieuwegein, The Netherlands
| | - Gemma Vilahur
- Cardiovascular Science Institute-ICCC, IIB-Sant Pau, CiberCV, Hospital de Sant Pau, Avda. S. Antoni M. Claret 167, 08025 Barcelona, Spain
| | - Freek W A Verheugt
- Department of Cardiology, Onze Lieve Vrouwe Gasthuis (OLVG), Oosterpark 9, 1091 AC Amsterdam, The Netherlands
| | - Lars Wallentin
- Department of Medical Sciences, Cardiology, Uppsala University & Uppsala Clinical Research Center, Uppsala Science Park, MTC, Dag Hammarskjölds väg 14B, SE-752 37 Uppsala, Sweden
| | - Thomas W Weiss
- 3rd Department of Medicine, Cardiology and Intensive Care Medicine, Wilhelminenhospital, Montleartstrasse 37, A-1160 Vienna and Sigmund Freud University, Medical School, Kelsenstrasse 2, A-1030 Vienna, Austria
| | - Johann Wojta
- Department of Internal Medicine II, Medical University Vienna, Vienna, Austria
- Core Facilities, Medical University Vienna, Vienna, Austria
- Ludwig Boltzmann Cluster for Cardiovascular Research, Waehringer Guertel 18-20, A-1090 Vienna, Austria
| | - Robert F Storey
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Beech Hill Road, Sheffield, South Yorkshire S10 2RX, UK
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26
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Madias JE. Aspirin for the Prevention of Infective Endocarditis? J Am Coll Cardiol 2017; 70:1104-1105. [PMID: 28818196 DOI: 10.1016/j.jacc.2017.04.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 04/14/2017] [Indexed: 11/16/2022]
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