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Institution

Tufts University

EducationMedford, Massachusetts, United States
About: Tufts University is a education organization based out in Medford, Massachusetts, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 32800 authors who have published 66881 publications receiving 3451152 citations. The organization is also known as: Tufts College & Universitatis Tuftensis.


Papers
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Journal ArticleDOI
TL;DR: It is demonstrated that MMP-9 plays a deleterious role in the development of brain injury after focal ischemia, and the broad spectrum MMP inhibitor BB-94 had no detectable protective effect when administered to M MP-9 knockout mice subjected to focal cerebral ischemIA.
Abstract: It has been shown recently that matrix metalloproteinases (MMPs) are elevated after cerebral ischemia. In the current study, we investigated the pathophysiologic role for MMP-9 (gelatinase B, EC.3.4.24.35) in a mouse model of permanent focal cerebral ischemia, using a combination of genetic and pharmacologic approaches. Zymography and Western blot analysis demonstrated that MMP-9 protein levels were rapidly up-regulated in brain after ischemic onset. Reverse transcription polymerase chain reaction showed increased transcription of MMP-9. There were no differences in systemic hemodynamic parameters and gross cerebrovascular anatomy between wild type mice and mutant mice with a targeted knockout of the MMP-9 gene. After induction of focal ischemia, similar reductions in cerebral blood flow were obtained. In the MMP-9 knockout mice, ischemic lesion volumes were significantly reduced compared with wild type littermates in male and female mice. In normal wild type mice, the broad spectrum MMP inhibitor BB-94 (batimastat) also significantly reduced ischemic lesion size. However, BB-94 had no detectable protective effect when administered to MMP-9 knockout mice subjected to focal cerebral ischemia. These data demonstrate that MMP-9 plays a deleterious role in the development of brain injury after focal ischemia.

589 citations

01 Nov 2015
TL;DR: In this paper, the authors describe image artifacts of OCT angiography and their underlying causative mechanisms, and establish a common vocabulary for the artifacts observed, and provide a review of the methods by which OCT images are acquired, generated and displayed.
Abstract: Purpose:To describe image artifacts of optical coherence tomography (OCT) angiography and their underlying causative mechanisms. To establish a common vocabulary for the artifacts observed.Methods:The methods by which OCT angiography images are acquired, generated, and displayed are reviewed as are

589 citations

Book
24 Apr 2000
TL;DR: The meaning of genetic causation, by Elliott Sober, and the morality of inclusion and policy implications are examined.
Abstract: This book, written by four internationally renowned bioethicists and first published in 2000, was the first systematic treatment of the fundamental ethical issues underlying the application of genetic technologies to human beings. Probing the implications of the remarkable advances in genetics, the authors ask how should these affect our understanding of distributive justice, equality of opportunity, the rights and obligations as parents, the meaning of disability, and the role of the concept of human nature in ethical theory and practice. The book offers a historical context to contemporary debate over the use of these technologies by examining the eugenics movement of the late nineteenth and early twentieth centuries. The questions raised in this book will be of interest to any reflective reader concerned about science and society and the rapid development of biotechnology, as well as to professionals in such areas as philosophy, bioethics, medical ethics, health management, law, and political science.

588 citations

Journal ArticleDOI
TL;DR: This is the first prospective, randomized, controlled trial of an extracorporeal liver support system, demonstrating safety and improved survival in patients with fulminant/subfulminant hepatic failure.
Abstract: Objective: The HepatAssist liver support system is an extracorpo-real porcine hepatocyte-based bioartificial liver (BAL). The safety and efficacy of the BAL were evaluated in a prospective. random-ized, controlled, multicenter trial in patients with severe acute liver failure. Summary Background Data: In experimental animals with acute liver failure, we demonstrated beneficial effects of the BAL. Similarly, Phase I trials of the BAL in acute liver failure patients yielded promising results. Methods: A total of 171 patients (86 control and 85 BAL) were enrolled. Patients with fulminant/subfulminant hepatic failure and primary nonfunction following liver transplantation were included. Data were analyzed with and without accounting for the following confounding factors: liver transplantation, time to transplant, disease etiology, disease severity, and treatment site. Results: For the entire patient population, survival at 30 days was 71% for BAL versus 62% for control (P = 0.26). After exclusion of primary nonfunction patients, survival was 73% for BAL Versus 59% for control (it = 147; P= 0.12). When Survival was analyzed accounting for confounding factors. in the entire patient Population, there was no difference between the 2 groups (risk ratio = 0.67; P = 0.13). However, survival in fulminant/subfulminant hepatic failure patients was significantly higher in the BAL compared with the control group (risk ratio 0.56: P = 0.048). Conclusions: This is the first prospective, randomized, controlled trial of an extracorporeal liver support system, demonstrating safety and improved survival in patients with fulminant/subfulminant hepatic failure.

588 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe systems that consist of arrays of interconnected, ultrathin inorganic light-emitting diodes and photodetectors configured in mechanically optimized layouts on unusual substrates.
Abstract: Inorganic light-emitting diodes and photodetectors represent important, established technologies for solid-state lighting, digital imaging and many other applications. Eliminating mechanical and geometrical design constraints imposed by the supporting semiconductor wafers can enable alternative uses in areas such as biomedicine and robotics. Here we describe systems that consist of arrays of interconnected, ultrathin inorganic light-emitting diodes and photodetectors configured in mechanically optimized layouts on unusual substrates. Light-emitting sutures, implantable sheets and illuminated plasmonic crystals that are compatible with complete immersion in biofluids illustrate the suitability of these technologies for use in biomedicine. Waterproof optical-proximity-sensor tapes capable of conformal integration on curved surfaces of gloves and thin, refractive-index monitors wrapped on tubing for intravenous delivery systems demonstrate possibilities in robotics and clinical medicine. These and related systems may create important, unconventional opportunities for optoelectronic devices.

587 citations


Authors

Showing all 33110 results

NameH-indexPapersCitations
Walter C. Willett3342399413322
Frank B. Hu2501675253464
Ralph B. D'Agostino2261287229636
John Q. Trojanowski2261467213948
Peter Libby211932182724
David Baltimore203876162955
Eric B. Rimm196988147119
Lewis C. Cantley196748169037
Bernard Rosner1901162147661
Charles A. Dinarello1901058139668
William B. Kannel188533175659
Scott M. Grundy187841231821
John P. A. Ioannidis1851311193612
David H. Weinberg183700171424
Joel Schwartz1831149109985
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023100
2022467
20213,334
20203,065
20192,806
20182,618