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Eikelboom JW, Bosch J, Connolly SJ, Tyrwitt J, Fox KAA, Muehlhofer E, Neumann C, Tasto C, Bangdiwala SI, Diaz R, Alings M, Dagenais GR, Leong DP, Lonn EM, Avezum A, Piegas LS, Widimsky P, Parkhomenko AN, Bhatt DL, Branch KRH, Probstfield JL, Lopez-Jaramillo P, Rydén L, Pogosova N, Keltai K, Keltai M, Ertl G, Stoerk S, Dans AL, Lanas F, Liang Y, Zhu J, Torp-Pedersen C, Maggioni AP, Commerford PJ, Guzik TJ, Vanassche T, Verhamme P, O'Donnell M, Tonkin AM, Varigos JD, Vinereanu D, Felix C, Kim JH, Ibrahim KS, Lewis BS, Metsarinne KP, Aboyans V, Steg PG, Hori M, Kakkar A, Anand SS, Lamy A, Sharma M, Yusuf S. Long-Term Treatment with the Combination of Rivaroxaban and Aspirin in Patients with Chronic Coronary or Peripheral Artery Disease: Outcomes During the Open Label Extension of the COMPASS trial. Eur Heart J Cardiovasc Pharmacother 2022; 8:786-795. [PMID: 35383832 DOI: 10.1093/ehjcvp/pvac023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/13/2022] [Accepted: 03/31/2022] [Indexed: 12/29/2022]
Abstract
AIMS To describe outcomes of patients with chronic coronary artery disease (CAD) and/or peripheral artery disease (PAD) enrolled in the Cardiovascular Outcomes for People Using Anticoagulation Strategies (COMPASS) randomized trial who were treated with the combination of rivaroxaban 2.5 mg twice daily and aspirin 100 mg once daily during long-term open-label extension (LTOLE). METHODS AND RESULTS Of the 27 395 patients enrolled in COMPASS, 12 964 (mean age at baseline 67.2 years) from 455 sites in 32 countries were enrolled in LTOLE and treated with the combination of rivaroxaban and aspirin for a median of 374 additional days (range 1-1191 days). During LTOLE, the incident events per 100 patient years were as follows: for the primary outcome [cardiovascular death, stroke, or myocardial infarction (MI)] 2.35 [95% confidence interval (CI) 2.11-2.61], mortality 1.87 (1.65-2.10), stroke 0.62 (0.50-0.76), and MI 1.02 (0.86-1.19), with CIs that overlapped those seen during the randomized treatment phase with the combination of rivaroxaban and aspirin. The incidence rates for major and minor bleeding were 1.01 (0.86-1.19) and 2.49 (2.24-2.75), compared with 1.67 (1.48-1.87) and 5.11 (95% CI 4.77-5.47), respectively, during the randomized treatment phase with the combination. CONCLUSION In patients with chronic CAD and/or PAD, extended combination treatment for a median of 1 year and a maximum of 3 years was associated with incidence rates for efficacy and bleeding that were similar to or lower than those seen during the randomized treatment phase, without any new safety signals.
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Affiliation(s)
- John W Eikelboom
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Jacqueline Bosch
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada.,School of Rehabilitation Science, McMaster University, Hamilton, Canada
| | - Stuart J Connolly
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Jessica Tyrwitt
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Keith A A Fox
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Eva Muehlhofer
- Bayer AG Pharmaceuticals, Research & Development, Wuppertal, Germany
| | - Christoph Neumann
- Bayer AG Pharmaceuticals, Research & Development, Wuppertal, Germany
| | - Christoph Tasto
- Bayer AG Pharmaceuticals, Research & Development, Wuppertal, Germany
| | - Shrikant I Bangdiwala
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Rafael Diaz
- Estudios Clínicos Latino América and Instituto Cardiovascular de Rosario, Rosaria, Argentina
| | - Marco Alings
- Division of Cardiology, Amphia ziekenhuis, Breda, Netherlands and Werkgroep Cardiologische centra Nederland (WCN), Utrecht, the Netherlands
| | - Gilles R Dagenais
- Institut universitaire de cardiologie et de pneumologie de Québec, Québec, QC, Canada
| | - Darryl P Leong
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Eva M Lonn
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Alvaro Avezum
- International Research Center, Hospital Alemão Oswaldo Cruz, São Paulo, Brazil
| | | | - Petr Widimsky
- Cardiocenter, University Hospital Kralovske Vinohrady and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Alexander N Parkhomenko
- Emergency Cardiology Dept., National Scientific Center Institute of Cardiology, Kyiv, Ukraine
| | - Deepak L Bhatt
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kelley R H Branch
- University of Washington Medical Centre, Division of Cardiology, Seattle, WA, USA
| | - Jeffrey L Probstfield
- University of Washington SOM, Division of Cardiology/Department of Medicine, Seattle WA, USA
| | - Patricio Lopez-Jaramillo
- Research Institute, Fundación Oftalmológica de Santander (FOSCAL)-Bucaramanga, Bucaramanga, Colombia
| | - Lars Rydén
- Department of Medicine K2, Karolinska Institutet, Stockholm, Sweden
| | - Nana Pogosova
- National Medical Research Center of Cardiology, Ministry of Healthcare of the Russian Federation, Moscow, Russia
| | - Katalin Keltai
- Hungarian Cardiovascular Institute, Semmelweis University, Budapest, Hungary
| | - Matyas Keltai
- Hungarian Cardiovascular Institute, Semmelweis University, Budapest, Hungary
| | - Georg Ertl
- Deutsches Zentrum für Herzinsuffizienz, Medizinische Klinik I, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Stefan Stoerk
- Deutsches Zentrum für Herzinsuffizienz, Medizinische Klinik I, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Antonio L Dans
- College of Medicine, University of Philippines, Manila, Philippines
| | - Fernando Lanas
- Universidad de La Frontera, Division of Cardiology, Internal Medicine Department, Temuco, Chile
| | - Yan Liang
- Fuwai Hospital, CAMS & PUMC, Beijing, China
| | - Jun Zhu
- Dept of Clinical Medicine, University of Aalborg, Copenhagen, Denmark
| | | | - Aldo P Maggioni
- ANMCO Research Center, Heart Care Foundation, Florence, Italy
| | - Patrick J Commerford
- Division of Cardiology, Department of Medicine, Groote Schuur Hospital and the University of Cape Town, Cape Town, South Africa
| | - Tomasz J Guzik
- Department of Medicine, Jagiellonian University Medical College Krakow, Poland.,Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Thomas Vanassche
- Department of Cardiovascular Sciences, University Hospitals Leuven, Leuven, Belgium
| | - Peter Verhamme
- Department of Cardiovascular Sciences, University Hospitals Leuven, Leuven, Belgium
| | | | - Andrew M Tonkin
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - John D Varigos
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Dragos Vinereanu
- University of Medicine and Pharmacy Carol Davila; University and Emergency Hospital, Bucharest, Romania
| | - Camillo Felix
- Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Jae-Hyung Kim
- Catholic University of Korea, Department of Medicine, Seoul, South Korea
| | | | - Basil S Lewis
- Lady Davis Carmel Medical Center and the Ruth and Bruce Rappaport School of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Kaj P Metsarinne
- Division of Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Victor Aboyans
- Department of Cardiology, Dupuytren University Hospital & INSERM 1094, Limoges, France
| | - Phillippe Gabriel Steg
- Université de Paris, and Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Masatsugu Hori
- Department of Oncocardiology, Osaka International Cancer Institute, Osaka, Japan
| | - Ajay Kakkar
- Thrombosis Research Institute and University College London, London, UK
| | - Sonia S Anand
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Andre Lamy
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Mukul Sharma
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
| | - Salim Yusuf
- Population Health Research Institute, Hamilton Health Sciences, McMaster University, Hamilton General Hospital, 237 Barton Street East, Hamilton Canada
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Humke C, Lena T, Mike W, Felix P, Boris B, Jens K, Andreas B, Frederik R, Felix C, Philipp M. Concordance between image morphological and pathological stages and its predictive value for nerve-sparing in patients with high-risk prostate cancer undergoing radical prostatectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32982-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Nickols N, Kishan A, Kane N, Diaz-Perez S, Ganapathy E, Nazarian R, Felix C, Mathis C, Kwak J, Basehart V, Zomorodian N, King C, Kupelian P, Rettig M, Steinberg M, Cao M, Knudsen B, Schaue D, Reiter R. Phase I Trial of Stereotactic Body Radiotherapy Neoadjuvant to Radical Prostatectomy for Patients with Unfavorable and High-Risk Non-Metastatic Prostate Cancer: Feasibility And Safety. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee P, Luterstein E, Goldman J, Garon E, Lee J, Felix C, Cao M, Tenn S, Low D, Kupelian P, Steinberg M. Accelerated Hypofractionated CRT Followed by SABR Boost (HyCRT-SABR) for Locally Advanced Unresectable NSCLC: A Prospective Phase II Radiation Dose-Escalation Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hegde J, Qi X, Chu F, Neylon J, Shaverdian N, Daly M, Felix C, Chen A. The Association of Canonical Speech- and Swallow-Related Dosimetric Constraints with Patient-Reported Quality of Life Outcomes: Results from a Phase II Trial of Dose De-Escalated Chemoradiation for HPV-Associated, Locally-Advanced Oropharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Liu H, Mohammed A, Felix C, Gandhi D, Verma S, Tugnawat D, Syrigapu A, Ramamurthy R, Pandian J, Walker M, Forster A, Hackett M, Anderson C, Langhorn P, Murthy G, Maulik P, Harvey L, Jan S, Lindley R. Process evaluation of a randomised controlled trial of a post stroke family-led rehabilitation intervention in India. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lindley RI, Anderson CS, Billot L, Forster A, Hackett ML, Harvey LA, Jan S, Li Q, Liu H, Langhorne P, Maulik PK, Murthy GVS, Walker MF, Pandian JD, Alim M, Felix C, Syrigapu A, Tugnawat DK, Verma SJ, Shamanna BR, Hankey G, Thrift A, Bernhardt J, Mehndiratta MM, Jeyaseelan L, Donnelly P, Byrne D, Steley S, Santhosh V, Chilappagari S, Mysore J, Roy J, Padma MV, John L, Aaron S, Borah NC, Vijaya P, Kaul S, Khurana D, Sylaja PN, Halprashanth DS, Madhusudhan BK, Nambiar V, Sureshbabu S, Khanna MC, Narang GS, Chakraborty D, Chakraborty SS, Biswas B, Kaura S, Koundal H, Singh P, Andrias A, Thambu DS, Ramya I, George J, Prabhakar AT, Kirubakaran P, Anbalagan P, Ghose M, Bordoloi K, Gohain P, Reddy NM, Reddy KV, Rao TNM, Alladi S, Jalapu VRR, Manchireddy K, Rajan A, Mehta S, Katoch C, Das B, Jangir A, Kaur T, Sreedharan S, Sivasambath S, Dinesh S, Shibi BS, Thangaraj A, Karunanithi A, Sulaiman SMS, Dehingia K, Das K, Nandini C, Thomas NJ, Dhanya TS, Thomas N, Krishna R, Aneesh V, Krishna R, Khullar S, Thouman S, Sebastian I. Family-led rehabilitation after stroke in India (ATTEND): a randomised controlled trial. Lancet 2017; 390:588-599. [PMID: 28666682 DOI: 10.1016/s0140-6736(17)31447-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/17/2017] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Most people with stroke in India have no access to organised rehabilitation services. The effectiveness of training family members to provide stroke rehabilitation is uncertain. Our primary objective was to determine whether family-led stroke rehabilitation, initiated in hospital and continued at home, would be superior to usual care in a low-resource setting. METHODS The Family-led Rehabilitation after Stroke in India (ATTEND) trial was a prospectively randomised open trial with blinded endpoint done across 14 hospitals in India. Patients aged 18 years or older who had had a stroke within the past month, had residual disability and reasonable expectation of survival, and who had an informal family-nominated caregiver were randomly assigned to intervention or usual care by site coordinators using a secure web-based system with minimisation by site and stroke severity. The family members of participants in the intervention group received additional structured rehabilitation training-including information provision, joint goal setting, carer training, and task-specific training-that was started in hospital and continued at home for up to 2 months. The primary outcome was death or dependency at 6 months, defined by scores 3-6 on the modified Rankin scale (range, 0 [no symptoms] to 6 [death]) as assessed by masked observers. Analyses were by intention to treat. This trial is registered with Clinical Trials Registry-India (CTRI/2013/04/003557), Australian New Zealand Clinical Trials Registry (ACTRN12613000078752), and Universal Trial Number (U1111-1138-6707). FINDINGS Between Jan 13, 2014, and Feb 12, 2016, 1250 patients were randomly assigned to intervention (n=623) or control (n=627) groups. 33 patients were lost to follow-up (14 intervention, 19 control) and five patients withdrew (two intervention, three control). At 6 months, 285 (47%) of 607 patients in the intervention group and 287 (47%) of 605 controls were dead or dependent (odds ratio 0·98, 95% CI 0·78-1·23, p=0·87). 72 (12%) patients in the intervention group and 86 (14%) in the control group died (p=0·27), and we observed no difference in rehospitalisation (89 [14%]patients in the intervention group vs 82 [13%] in the control group; p=0·56). We also found no difference in total non-fatal events (112 events in 82 [13%] intervention patients vs 110 events in 79 [13%] control patients; p=0·80). INTERPRETATION Although task shifting is an attractive solution for health-care sustainability, our results do not support investment in new stroke rehabilitation services that shift tasks to family caregivers, unless new evidence emerges. A future avenue of research should be to investigate the effects of task shifting to health-care assistants or team-based community care. FUNDING The National Health and Medical Research Council of Australia.
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Singh Y, Islam S, Zheng J, Felix C, Tinnie A, Kuruvilla T, Naraynsingh V. Endoscopic thyroid surgery in the Caribbean: A case report of the first clinical experience. Int J Surg Case Rep 2017; 37:233-236. [PMID: 28711821 PMCID: PMC5511591 DOI: 10.1016/j.ijscr.2017.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 06/26/2017] [Accepted: 07/03/2017] [Indexed: 11/10/2022] Open
Abstract
Minimally invasive surgery is rapidly expanding its role in almost all of the surgical sub-specialties. There is also a growing demand of this service as patients became more and more concerned about cosmesis in addition to their original surgery. Although its role in thyroid surgery has already been proven earlier; but it is not yet accepted as a routine approach amongst many thyroid surgeons. There is no reported case of laparoscopic thyroid surgery in the English literature from the Caribbean. We are reporting our first clinical experience in performing laparoscopic thyroid surgery in the Caribbean with a successful outcome.
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Affiliation(s)
- Yardesh Singh
- Department of General Surgery, San Fernando Teaching Hospital, Trinidad and Tobago; Department of Clinical Surgical Sciences, University of West Indies, St Augustine, Trinidad and Tobago
| | - Shariful Islam
- Department of General Surgery, San Fernando Teaching Hospital, Trinidad and Tobago; Department of Clinical Surgical Sciences, University of West Indies, St Augustine, Trinidad and Tobago.
| | - Jianwei Zheng
- Chinese Medical Brigade, San Fernando Teaching Hospital, Trinidad, West Indies
| | - C Felix
- Department of General Surgery, San Fernando Teaching Hospital, Trinidad and Tobago; Department of Clinical Surgical Sciences, University of West Indies, St Augustine, Trinidad and Tobago
| | - A Tinnie
- Department of General Surgery, San Fernando Teaching Hospital, Trinidad and Tobago; Department of Clinical Surgical Sciences, University of West Indies, St Augustine, Trinidad and Tobago
| | - Thivy Kuruvilla
- Department of General Surgery, San Fernando Teaching Hospital, Trinidad and Tobago; Department of Clinical Surgical Sciences, University of West Indies, St Augustine, Trinidad and Tobago
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Affiliation(s)
- C. Felix
- Geriatric Medicine, Welcare Hopital, Kochi, Kerala, India,
- The George Institute for Global Health, Hyderabad, India
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Chen A, Felix C, Wang J, Basehart V, Wong D, Rosove M, Beron P, Rao S, Melanson H, Palmer D, Kelly K, Steinberg M, Kupelian P, Daly M. Phase 2 Trial of Induction Chemotherapy Followed by Attenuated Chemoradiation Therapy for Human Papillomavirus–Positive Locally Advanced Squamous Cell Carcinoma of the Oropharynx. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chen A, Felix C, Hsu S, Garst J, Wang J. Patient- Versus Physician-Reported Quality of Life Among Survivors of Head and Neck Cancer After Chemoradiation: Prospective Evaluation of Screening Methodologies. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Melo M, Strassler H, Keddy A, Felix C. Irradiance assessment of damaged dental light guides by spectrometer-based methods. Dent Mater 2015. [DOI: 10.1016/j.dental.2015.08.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lee P, Felix C, Abtin F, Wu J, Suh R, Tenn S, Lee C, Wang P, Lee J, Garon E, Basehart V, Agazaryan N, Steinberg M. Early Outcomes from a Prospective Phase II Trial Evaluating Safety and Efficacy of Combining SBRT with RFA for Centrally Located Lung Tumors. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Flecher E, Anselmi A, Corbineau H, Langanay T, Verhoye JP, Felix C, Leurent G, Le Tulzo Y, Malledant Y, Leguerrier A. Current aspects of extracorporeal membrane oxygenation in a tertiary referral centre: determinants of survival at follow-up. Eur J Cardiothorac Surg 2014; 46:665-71; discussion 671. [DOI: 10.1093/ejcts/ezu029] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Lu H, Pfefferkorn F, Felix C, Deacon C. Irradiance–distance, beam uniformity, and heat generation of seven LED lights. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
BACKGROUND In order to reduce the negative effects of extracorporeal circulation (ECC), the perfusion system and management were optimized at our institution. The goals of optimization were a reduction in the priming volume, in the foreign surface area and in microbubble activity, as well as optimization of suction blood management. METHODS Sixty patients were included in this retrospective study. Patients were assigned to two groups, with regard to the use of an optimized perfusion system (OPS-group, n=30) and a standard perfusion system (SPS-group, n=30). All patients underwent elective procedures. RESULTS There were no significant differences with respect to patient demographics and operation time. ECC time and cross-clamp time were significantly longer in the OPS group. Statistically significant differences in outcome between the two groups were seen with regard to the following variables: effective priming volume (OPS: 775±447ml; SPS: 1610±0ml; p<0.0001), hemoglobin drop after the start of ECC (OPS: 2.7±1.2g/dl; SPS: 4.2±0.8g/dl; p<0.0001), c-reactive protein on postoperative day 2 (OPS: 121.0±59.4 U/l; SPS: 164.0±50.2 U/l; p=0.003). With regard to the use of blood transfusions, a 33% reduction in the overall amount of transfused units was seen. The rate of patients without transfusions during the entire hospital stay increased from 37% (SPS) to 53% (OPS). The mean transfused red blood cell units per patient was lower in the OPS-group (1.6±2.4 units) than in the SPS-group (2.3±3.5 units). CONCLUSION With the described optimized perfusion system, a significantly lower priming volume, leading to less hemodilution after the onset of CPB, was achieved. The amount of blood transfusions and the inflammatory response were reduced.
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Affiliation(s)
- C T Starck
- Clinic of Cardiac and Vascular Surgery, University Hospital Zurich, 8091 Zurich, Switzerland.
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Badagliacca R, Reali M, Vizza C, Poscia R, Pezzuto B, Gambardella C, Papa S, Mezzapesa M, Nocioni M, Fedele F, Freed B, Bhave N, Tsang W, Gomberg-Maitland M, Mor-Avi V, Patel A, Lang RM, Liel-Cohen N, Yaacobi M, Guterman H, Jurzak P, Ternacle J, Gallet R, Bensaid A, Kloeckner M, Monin JL, Gueret P, Dubois-Rande JL, Lim P, Otsuka T, Suzuki M, Yoshikawa H, Hashimoto G, Ishikawa Y, Osaki T, Masai H, Ono T, Yamamoto M, Sugi K, Satendra M, Sargento L, Sousa C, Arsenio A, Lousada N, Palma Reis R, Wang S, Lam Y, Liu M, Fang F, Shang Q, Luo X, Wang J, Sun J, Sanderson J, Yu C, De Marchi S, Hopp E, Urheim S, Hervold A, Murbrach K, Massey R, Remme E, Hol P, Aakhus S, Bouzas Mosquera A, Peteiro J, Broullon F, Garcia NA, Rodriguez Garrido J, Martinez Ruiz D, Yanez Wonenburger J, Bouzas Zubeldia B, Fabregas Casal R, Castro Beiras A, Le Tourneau T, Sportouch C, Foucher C, Delasalle B, Rosso J, Neuder Y, Trochu J, Roncalli J, Lemarchand P, Manrique A, Sharif D, Sharif-Rasslan A, Shahla C, Khalil A, Rosenschein U, Monti L, Tramarin M, Calcagnino M, Lisignoli V, Nardi B, Balzarini L, Khalatbari A, Mills J, Chenzbraun A, Theron A, Morera P, Resseguier N, Thuny F, Riberi A, Giorgi R, Collart F, Habib G, Avierinos J, Liu D, Hu K, Niemann M, Herrmann S, Gaudron P, Voelker W, Ertl G, Bijnens B, Weidemann F, Lenders GD, Bosmans JM, Van Herck PL, Rodrigus IE, Claeys MJ, Vrints CJ, Paelinck BP, Veronesi F, Fusini L, Tamborini G, Gripari P, Maffessanti F, Mirea O, Alamanni F, Pepi M, Caiani E, Frikha Z, Zairi I, Saib W, Fennira S, Ben Moussa F, Kammoun S, Mrabet K, Ben Yaala A, Said L, Ghannouchi M, Carlomagno G, Ascione L, Sordelli C, Iengo R, Severino S, D'andrea A, Calabro' R, Caso P, Mizia M, Mizia-Stec K, Sikora-Puz A, Gieszczyk-Strozik K, Chmiel A, Haberka M, Hudziak D, Jasinski M, Gasior Z, Wos S, Biaggi P, Felix C, Gruner C, Hohlfeld S, Herzog B, Gaemperli O, Gruenenfelder J, Corti R, Tanner F, Bettex D, Kovalova S, Necas J, Dominguez Rodriguez F, Monivas V, Mingo S, Garcia-Lunar I, Garcia-Pavia P, Gonzalez-Mirelis J, Zegri I, Cavero M, Jeon HK, Lee D, Youn H, Shin H, Yoon J, Chung H, Choi E, Kim J, Min P, Lee B, Yoon Y, Hong B, Kwon H, Rim S, Petronilli V, Cimino S, De Luca L, Cicogna F, Arcari L, Francone M, Iacoboni C, Agati L, Halmai L, Atkinson P, Kardos A, Bogle R, Meimoun P, Flahaut G, Charles V, Villain Y, Clerc J, Germain A, Elmkies F, Zemir H, Luycx-Bore A, Kim K, Song J, Jeong H, Yoon H, Ahn Y, Jeong M, Cho J, Park J, Kang J, Tolba OA, El-Shanshory MR, El-Shitany NAEA, El-Hawary ES, Elkilany GN, Tolba OA, El-Shanshory MR, El-Shitany AEA, El-Hawary EES, Nagib Elkilany GE, Costanzo L, Buccheri S, Monte IP, Curatolo G, Crapanzano P, Di Pino L, Rodolico M, Blundo A, Leggio S, Tamburino C, Rees E, Hocking R, Dunstan F, Lewis M, Tunstall K, Rees DA, Halcox JP, Fraser AG, Rodrigues A, Guimaraes L, Guimaraes J, Monaco C, Cordovil A, Lira E, Vieira M, Fischer C, Nomura C, Morhy S, Bruno R, Cogo A, Sharma R, Bartesaghi M, Pomidori L, Basnyat B, Taddei S, Picano E, Sicari R, Pratali L, Satendra M, Sargento L, Sousa C, Lousada N, Palma Reis R, Zakhama L, Sioua S, Naffati S, Marouen A, Boussabah E, Kadour R, Thameur M, Benyoussef S, Vanoli D, Wiklund U, Henein M, Naslund U, Lindqvist P, Palinsky M, Petrovicova J, Pirscova M, Korpi K, Blafield H, Suomi H, Linden P, Valtonen M, Jarvinen V, Laine M, Loimaala A, Kaldararova M, Kantorova A, Vrsanska V, Tittel P, Hraska V, Masura J, Simkova I, Attenhofer Jost C, Zimmermann C, Greutmann M, Dave H, Valsangiacomo Buechel E, Pretre R, Mueller C, Seifert B, Kretschmar O, Weber R, Carro A, Teixido G, Rodriguez-Palomares J, Gutierrez L, Maldonado G, Paucca E, Gonzalez-Alujas T, Evangelista A, Al Akhfash A, Al Mesned D, Maan Hasson D, Al Harbi B M, Cruz C, Pinho T, Lebreiro A, Silva Cardoso J, Julia Maciel M, Kalimanovska-Ostric D, Nastasovic T, Deljanin-Ilic M, Milakovic B, Dostanic M, Stosic M, Lam YY, Fang F, Yu C, Bobbo M, Leonelli V, Piazza R, Leiballi E, Pecoraro R, Cinello M, Mimo R, Cervesato E, Nicolosi GL, Cruz C, Pinho T, Lebreiro A, Silva Cardoso J, Julia Maciel M, Moral Torres S, Evangelista A, Gonzalez-Alujas M, Rodriguez-Palomares J, Teixido G, Gutierrez L, Cuellar H, Carro A, Maldonado G, Garcia-Dorado D, Kocabay G, Dal Bianco L, Muraru D, Peluso D, Segafredo B, Iliceto S, Badano L, Schiano Lomoriello V, Santoro A, Esposito R, Ippolito R, De Palma D, Schiattarella P, Muscariello R, Galderisi M, Teixido Tura G, Redheuil A, Rodriguez-Palomares J, Gutierrez L, Sanchez V, Forteza A, Lima J, Garcia-Dorado D, Evangelista A, Moral Torres S, Evangelista A, Gonzalez-Alujas M, Rodriguez-Palomares J, Teixido G, Gutierrez L, Cuellar H, Carro A, Maldonado G, Garcia-Dorado D, Mihalcea D, Florescu M, Suran B, Enescu O, Mincu R, Patrascu N, Serbanoiu I, Margulescu A, Vinereanu D, Teixido Tura G, Rodriguez-Palomares J, Gutierrez L, Gonzalez-Alujas T, Carro A, Thomas M, Garcia-Dorado D, Evangelista A, Tosello F, Milan A, Magnino C, Leone D, Chiarlo M, Bruno G, Losano I, Burrello J, Fulcheri C, Veglio F, Styczynski G, Szmigielski CA, Kaczynska A, Kuch-Wocial A, Jansen R, Kracht P, Kluin J, Tietge W, Cramer M, Chamuleau S, Zito C, Tripepi S, Cusma-Piccione M, Di Bella G, Mohammed M, Oreto L, Manganaro R, D'angelo M, Pizzino F, Carerj S, Arapi S, Tsounis D, Matzraki V, Kaplanis I, Perpinia A, Varoudi M, Mpitsios G, Lazaros G, Karavidas A, Pyrgakis V, Mornos C, Ionac A, Cozma D, Mornos A, Dragulescu D, Petrescu L, Pescariu S, Lupinek P, Sramko M, Kubanek M, Kautznerova D, Tintera J, Lanska V, Kadrabulatova S, Pavlukova E, Tarasov D, Karpov R, Sveric K, Forkmann M, Richter U, Wunderlich C, Strasser R, Grapsa J, Dawson D, Zimbarra Cabrita I, Punjabi P, Nihoyannopoulos P, Kovacs A, Apor A, Nagy A, Vago H, Toth A, Becker D, Merkely B, Ranjbar S, Karvandi M, Hassantash S, Yoshikawa H, Suzuki M, Kusunose Y, Hashimoto G, Otsuka T, Nakamura M, Sugi K, De Knegt M, Biering-Sorensen T, Sogaard P, Sivertsen J, Jensen J, Mogelvang R, Montserrat S, Gabrielli L, Borras R, Bijnens B, Castella M, Berruezo A, Mont L, Brugada J, Sitges M, Tarr A, Stoebe S, Pfeiffer D, Hagendorff A, Ternacle J, Jurzak P, Gallet R, Champagne S, Teiger E, Monin JL, Gueret P, Dubois-Rande JL, Lim P, Monney P, Jeanrenaud X, Monivas Palomero V, Mingo Santos S, Garcia Lunar I, Beltran Correas P, Gonzalez Lopez E, Sanchez Garcia M, Gonzalez Mirelis J, Cavero Gibanel M, Gomez Bueno M, Segovia Cubero J, Haarman M, Van Den Bosch A, Domburg R, Mcghie J, Roos-Hesselink J, Geleijnse M, Yanikoglu A, Altekin E, Kucuk M, Karakas S, Ozel D, Yilmaz H, Demir I, Tsuruta H, Iwanaga S, Sato T, Miyoshi S, Nishiyama N, Aizawa Y, Tanimoto K, Murata M, Takatsuki S, Fukuda K, Carrilho-Ferreira P, Cortez-Dias N, Silva D, Jorge C, Goncalves S, Santos I, Sargento L, Marques P, Carpinteiro L, Sousa J, Schubert U, Kockova R, Tintera J, Kautznerova D, Cerna D, Sedlacek K, Kryze L, Sikula V, Segetova M, Kautzner J, Iwaki T, Dores H, Goncalves P, Sousa P, Carvalho M, Marques H, Machado F, Gaspar A, Aleixo A, Carmo M, Roquette J, Lagopati N, Sotiropoulos M, Baka I, Ploussi A, Lyra Georgosopoulou M, Miglioranza M, Gargani L, Sant'anna R, Rover M, Mantovani A, Kalil R, Sicari R, Picano E, Leiria T, Minarik T, Taborsky M, Fedorco M, Novak P, Ledakowicz-Polak A, Polak L, Zielinska M, Zhong L, Chin C, Lau Y, Sim L, Chua T, Tan B, Tan R. Poster session: Dobutamine stress echo. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Totzeck M, Hendgen-Cotta U, Rammos C, Petrescu A, Stock P, Goedecke A, Shiva S, Kelm M, Rassaf T, Duerr GD, Heuft T, Klaas T, Suchan G, Roell W, Zimmer A, Welz A, Fleischmann BK, Dewald O, Luedde M, Carter N, Lutz M, Sosna J, Jacoby C, Floegel U, Hippe HJ, Adam D, Heikenwaelder M, Frey N, Sobierajski J, Luedicke P, Hendgen-Cotta U, Lue H, Totzeck M, Dewor M, Kelm M, Bernhagen J, Rassaf T, Cortez-Dias N, Costa M, Carrilho-Ferreira P, Silva D, Jorge C, Robalo Martins S, Fiuza M, Pinto FJ, Nunes Diogo A, Enguita FJ, Tsiachris D, Tsioufis C, Kasiakogias A, Flessas D, Antonakis V, Kintis K, Giakoumis M, Hatzigiannis P, Katsimichas T, Stefanadis C, Andrikou E, Tsioufis C, Thomopoulos C, Kasiakogias A, Tzamou V, Andrikou I, Bafakis I, Lioni L, Kintis K, Stefanadis C, Lazaros G, Tsiachris D, Tsioufis C, Vlachopoulos C, Brili S, Chrysohoou C, Tousoulis D, Stefanadis C, Santos De Sousa CI, Pires S, Nunes A, Cortez Dias N, Belo A, Cabrita I, Pinto FJ, Benova T, Radosinska J, Viczenczova C, Bacova B, Knezl V, Dosenko V, Navarova J, Zeman M, Tribulova N, Maceira Gonzalez AM, Cosin Sales J, Igual B, Ruvira J, Diago JL, Aguilar J, Lopez Lereu MP, Monmeneu JV, Estornell J, Choi JC, Cha KS, Lee HW, Yun EY, Ahn JH, Oh JH, Choi JH, Lee HC, Hong TJ, Manzano Fernandez S, Lopez-Cuenca A, Januzzi JL, Mateo-Martinez A, Sanchez-Martinez M, Parra-Pallares S, Orenes-Pinero E, Romero-Aniorte AI, Valdes-Chavarri M, Marin F, Bouzas Mosquera A, Peteiro J, Broullon FJ, Alvarez Garcia N, Couto Mallon D, Bouzas Zubeldia B, Martinez Ruiz D, Yanez Wonenburger JC, Fabregas Casal R, Castro Beiras A, Backus BE, Six AJ, Cullen L, Greenslade J, Than M, Kameyama T, Sato T, Noto T, Nakadate T, Ueno H, Yamada K, Inoue H, Albrecht-Kuepper B, Kretschmer A, Kast R, Baerfacker L, Schaefer S, Kolkhof P, Andersson C, Kober L, Christensen SB, Nguyen CD, Nielsen MB, Olsen AMS, Gislason GH, Torp-Pedersen C, Shigekiyo M, Harada K, Lieu H, Neutel J, Maddock S, Goldsmith S, Koren M, Antwerp BV, Burnett J, Christensen SB, Charlot MG, Madsen M, Andersson C, Kober L, Gustafsson F, Torp-Pedersen C, Gislason GH, Cavusoglu Y, Mert KU, Nadir A, Mutlu F, Gencer E, Ulus T, Birdane A, Lim HS, Tahk SJ, Yang HM, Kim JW, Seo KW, Choi BJ, Choi SY, Yoon MH, Hwang GS, Shin JH, Russ MA, Wackerl C, Hochadel M, Brachmann J, Mudra H, Zeymer U, Weber MA, Menozzi A, Saia F, Valgimigli M, Belotti LM, Casella G, Manari A, Cremonesi A, Piovaccari G, Guastaroba P, Marzocchi A, Kuramitsu S, Iwabuchi M, Haraguchi T, Domei T, Nagae A, Hyodo M, Takabatake Y, Yokoi H, Toyota F, Nobuyoshi M, Kaitani K, Hanazawa K, Izumi C, Nakagawa Y, Ando K, Arita T, Nobuyoshi M, Shizuta S, Kimura T, Isshiuki T, Trucco ME, Tolosana JM, Castel MA, Borras R, Sitges M, Khatib M, Arbelo E, Berruezo A, Brugada J, Mont L, Romanov A, Pokushalov E, Prokhorova D, Chernyavskiy A, Shabanov V, Goscinska-Bis K, Bis J, Bochenek A, Gersak B, Karaskov A, Linde C, Daubert C, Bergemann TL, Abraham WT, Gold MR, Van Boven N, Bogaard K, Ruiter JH, Kimman GP, Kardys I, Umans VA, Cipriani M, Lunati M, Landolina M, Vittori C, Vargiu S, Ghio S, Petracci B, Campo C, Bisetti S, Frigerio M, Bongiorni MG, Soldati E, Segreti L, Zucchelli G, Di Cori A, De Lucia R, Viani S, Paperini L, Boem A, Levorato D, Kutarski A, Malecka B, Zabek A, Czajkowski M, Chudzik M, Kutarski A, Mitkowski P, Maciag A, Kempa M, Golzio PG, Fanelli A, Vinci M, Pelissero E, Morello M, Grosso Marra W, Gaita F, Kutarski A, Czajkowski M, Pietura R, Golzio PG, Vinci M, Pelissero E, Fanelli A, Ferraris F, Gaita F, Cuypers JAAE, Menting ME, Opic P, Utens EMWJ, Van Domburg RT, Helbing WA, Witsenburg M, Van Den Bosch AE, Bogers AJJC, Roos-Hesselink JW, Van Der Linde D, Takkenberg JJM, Rizopoulos D, Heuvelman HJ, Witsenburg M, Budts W, Van Dijk APJ, Bogers AJJC, Oechslin EN, Roos-Hesselink JW, Diller GP, Kempny A, Liodakis E, Alonso-Gonzalez R, Orwat S, Dimopoulos K, Swan L, Li W, Gatzoulis MA, Baumgartner H, Andrade AC, Voges I, Jerosch-Herold M, Pham M, Hart C, Hansen T, Kramer HH, Rickers C, Kempny A, Wustmann K, Borgia F, Dimopoulos K, Uebing A, Piorkowski A, Yacoub MH, Gatzoulis MA, Swan L, Diller GP, Mueller J, Weber R, Pringsheim M, Hoerer J, Hess J, Hager A, Hu K, Liu D, Niemann M, Herrmann S, Cikes M, Stoerk S, Knob S, Ertl G, Bijnens B, Weidemann F, Mornos C, Cozma D, Dragulescu D, Ionac A, Mornos A, Petrescu L, Mingo S, Ruiz Bautista L, Monivas Palomero V, Prados C, Maiz L, Giron R, Martinez M, Cavero Gibanel MA, Segovia J, Pulpon L, Kato H, Kubota S, Takasawa Y, Kumamoto T, Iacoviello M, Puzzovivo A, Forleo C, Lattarulo MS, Monitillo F, Antoncecchi V, Malerba G, Marangelli V, Favale S, Ruiz Bautista L, Mingo S, Monivas V, Segovia J, Prados C, Maiz L, Giron R, Martinez MT, Gonzalez Estecha M, Alonso Pulpon LA, Ren B, De Groot-De Laat L, Mcghie J, Vletter W, Ten Cate F, Geleijnse M, Looi JL, Lam YY, Yu CM, Lee PW, Apor A, Sax B, Huttl T, Nagy A, Kovacs A, Merkely B, Vecera J, Bartunek J, Vanderheyden M, Mertens P, Bodea O, Penicka M, Biaggi P, Gaemperli O, Corti R, Gruenenfelder J, Felix C, Bettex D, Datta S, Jenni R, Tanner F, Herzog B, Fattouch K, Murana G, Castrovinci S, Sampognaro R, Bertolino EC, Caccamo G, Ruvolo G, Speziale G, Lancellotti P. Saturday, 25 August 2012. Eur Heart J 2012. [DOI: 10.1093/eurheartj/ehs280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Felix C, Maiyalagan T, Pasupathi S, Bladergroen B, Linkov V. Synthesis and Optimisation of IrO2 Electrocatalysts by Adams Fusion Method for Solid Polymer Electrolyte Electrolysers. ACTA ACUST UNITED AC 2012. [DOI: 10.2174/1876402911204030186] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Emmert MY, Salzberg SP, Theusinger OM, Felix C, Plass A, Hoerstrup SP, Falk V, Gruenenfelder J. How good patient blood management leads to excellent outcomes in Jehovah's witness patients undergoing cardiac surgery. Interact Cardiovasc Thorac Surg 2011; 12:183-8. [DOI: 10.1510/icvts.2010.242552] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Emmert M, Salzberg S, Plass A, Behjati S, Felix C, Falk V, Siclari F, Gruenenfelder J. “When Aneurysm Ain't Aneurysm”: Sinus of Valsalva Aneurysm Mimicked by Healed Abscess Cavity under the Aortic Valve. Thorac Cardiovasc Surg 2009; 57:367-8. [DOI: 10.1055/s-0029-1185735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Elsellami L, Chartron V, Vocanson F, Conchon P, Felix C, Guillard C, Retailleau L, Houas A. Coupling process between solid-liquid extraction of amino acids by calixarenes and photocatalytic degradation. J Hazard Mater 2009; 166:1195-1200. [PMID: 19150749 DOI: 10.1016/j.jhazmat.2008.12.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Revised: 11/26/2008] [Accepted: 12/03/2008] [Indexed: 05/27/2023]
Abstract
The removal of biological or pharmaceutical compounds through the wastewater treatment becomes relevant. These compounds are present as traces in sewage. In this work, we propose a coupling process which combines the pre-concentration of the pollutant by selective extraction and then degradation of these pollutants by photocatalysis in presence of TiO2. This process is efficient at room temperature by activation of a photocatalyst (TiO2) under UV light. Aromatic amino acids were chosen as model of pharmaceutical pollutants. Their extraction from water, ensured by calixarene derivatives, and their photocatalytic degradation were investigated. It was shown that photodegradation follows a first-order kinetic and that the rate constant enhances with amino acid concentration. The effect of the pH on the rate constant will be discussed.
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Affiliation(s)
- L Elsellami
- ICBMS, CNRS, UMR 5246, Université de Lyon, 43 Bd du 11 Novembre 1918, Villeurbanne F-69622, France
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Bui TH, Felix C, Pigeot-Remy S, Herrmanna JM, Lejeune P, Guillard C. Photocatalytic Inactivation of Wild and Hyper-Adherent E. Coli Strains in Presence of Suspended or Supported TiO2. Influence of the Isoelectric Point of the Particle Size and of the Adsorptive Properties of Titania. ACTA ACUST UNITED AC 2008. [DOI: 10.1515/jaots-2008-0310] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe photocatalytic inactivation of two E. coli strains, a wild strain and a hyper-adherent strain, was examined using two industrial TiO
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Felix C, Gillis M, Driedzic WR, Paulson DJ, Broderick TL. Effects of propionyl-L-carnitine on isolated mitochondrial function in the reperfused diabetic rat heart. Diabetes Res Clin Pract 2001; 53:17-24. [PMID: 11378209 DOI: 10.1016/s0168-8227(01)00240-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of propionyl-L-carnitine (PLC) on isolated mitochondrial respiration in the ischemic reperfused diabetic heart were studied. Oral PLC treatment of STZ-diabetic rats was initiated for a period of 6 weeks. After treatment, isolated working hearts from diabetic rats were perfused under aerobic conditions then subjected to 25 min of no-flow ischemia followed by 15 min of aerobic reperfusion. At the end of reperfusion, heart mitochondria was isolated using differential centrifugation and respiration measured in the presence of pyruvate, glutamate, and palmitoylcarnitine. Our results indicate that diabetes was characterized by a pronounced decrease in heart function under aerobic conditions as well as during reperfusion following ischemia. Treatment with PLC resulted in a significant improvement in heart function under these conditions. The depressions in state 3 mitochondrial respiration with both pyruvate and glutamate seen in reperfused hearts from diabetic rats were prevented by PLC. State 3 respiration in the presence of palmitoylcarnitine was also improved in the ischemic reperfused diabetic rat heart. Our results show that PLC improves recovery of mechanical function following ischemia in the diabetic rat heart. The beneficial effects of PLC are associated with enhanced mitochondrial oxidation of fuels.
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Affiliation(s)
- C Felix
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, B3H 4H7, Halifax, NS, Canada
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Laibovitz RA, VanDenburgh AM, Felix C, David R, Batoosingh A, Rosenthal A, Cheetham J. Comparison of the ocular hypotensive lipid AGN 192024 with timolol: dosing, efficacy, and safety evaluation of a novel compound for glaucoma management. Arch Ophthalmol 2001; 119:994-1000. [PMID: 11448321 DOI: 10.1001/archopht.119.7.994] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To compare the safety and efficacy of the ocular hypotensive lipid AGN 192024 (Lumigan) with those of timolol. METHODS A 30-day, randomized, investigator-masked, clinical trial involving 100 patients with elevated intraocular pressure (IOP). Study medications were instilled topically. Doses of 0.003%, 0.01%, or 0.03% AGN 192024 were given once daily for 3 weeks then twice daily for 1 week, and vehicle control or 0.5% timolol was given twice daily for 4 weeks. Mean change in IOP from baseline was the primary efficacy variable. Safety parameters included adverse events, hyperemia grading, laser flare meter analysis, heart rate, and blood pressure. RESULTS Timolol and all 3 concentrations of AGN 192024 lowered IOP from baseline (P < .001). A dosage of 0.03% AGN 192024 once daily lowered IOP significantly more than timolol (P < or = .02) at every study visit except day 21 (P = .053) and provided better diurnal IOP control. Twice-daily dosing of AGN 192024 provided no clinically significant benefit over once-daily dosing. All treatment regimens were safe and well tolerated, with no clinically significant effects on heart rate or blood pressure and no between-group differences in the incidence of adverse events. The only significant ocular safety finding with AGN 192024 was a dose-related mild increase in conjunctival hyperemia. CONCLUSIONS Of the 3 concentrations tested, 0.03% AGN 192024 once daily had the best therapeutic profile. AGN 192024 was safe and well tolerated, and it provided superior ocular hypotensive efficacy and diurnal IOP control compared with timolol in patients with ocular hypertension and glaucoma.
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DuBiner H, Cooke D, Dirks M, Stewart WC, VanDenburgh AM, Felix C. Efficacy and safety of bimatoprost in patients with elevated intraocular pressure: a 30-day comparison with latanoprost. Surv Ophthalmol 2001; 45 Suppl 4:S353-60. [PMID: 11434938 DOI: 10.1016/s0039-6257(01)00212-0] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To compare the safety and efficacy of bimatoprost and latanoprost in patients with primary open-angle glaucoma or ocular hypertension. METHODS This was a 30-day, multicenter, double-masked, randomized, clinical trial. Patients (n = 64) diagnosed with primary open-angle glaucoma or ocular hypertension were randomly assigned to receive bimatoprost 0.03%, latanoprost 0.005%, or vehicle topically in both eyes once daily, in the evening, for 29 days. The primary endpoint was the reduction in IOP from baseline on day 14 and day 29. Secondary outcome measures included eye examinations and safety parameters. RESULTS Bimatoprost and latanoprost significantly lowered IOP from baseline (p <.001). Bimatoprost lowered IOP more than latanoprost at every timepoint measured (bimatoprost: 25-34% reduction, 5.9-8.9 mm Hg; latanoprost: 20-31% reduction, 4.4-7.9 mm Hg), although the between-group differences did not reach statistical significance. Over the 12-hour course of IOP measurements on day 29, bimatoprost provided better diurnal IOP control than latanoprost (p =.0378, area under the curve of diurnal IOP reductions, 1-way ANOVA with pairwise t-test). Both treatment regimens were safe and well tolerated, with no significant between-group differences in reports of specific adverse events. The most common side effect was conjunctival hyperemia, which was similarly apparent in the bimatoprost and latanoprost treatment groups. CONCLUSIONS At the end of this 30-day trial, once-daily bimatoprost 0.03% provided better diurnal IOP control than latanoprost and was safe and well tolerated in patients with ocular hypertension and glaucoma.
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Zhang H, Joseph J, Felix C, Kalyanaraman B. Bicarbonate enhances the hydroxylation, nitration, and peroxidation reactions catalyzed by copper, zinc superoxide dismutase. Intermediacy of carbonate anion radical. J Biol Chem 2000; 275:14038-45. [PMID: 10799477 DOI: 10.1074/jbc.275.19.14038] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The effect of bicarbonate anion (HCO(3)(-)) on the peroxidase activity of copper, zinc superoxide dismutase (SOD1) was investigated using three structurally different probes: 5, 5'-dimethyl-1-pyrroline N-oxide (DMPO), tyrosine, and 2, 2'-azino-bis-[3-ethylbenzothiazoline]-6-sulfonic acid (ABTS). Results indicate that HCO(3)(-) enhanced SOD/H(2)O(2)-dependent (i) hydroxylation of DMPO to DMPO-OH as measured by electron spin resonance, (ii) oxidation and nitration of tyrosine to dityrosine, nitrotyrosine, and nitrodityrosine as measured by high pressure liquid chromatography, and (iii) oxidation of ABTS to the ABTS cation radical as measured by UV-visible spectroscopy. Using oxygen-17-labeled water, it was determined that the oxygen atom present in the DMPO-OH adduct originated from H(2)O and not from H(2)O(2). This result proves that neither free hydroxyl radical nor enzyme-bound hydroxyl radical was involved in the hydroxylation of DMPO. We postulate that HCO(3)(-) enhances SOD1 peroxidase activity via formation of a putative carbonate radical anion. This new and different perspective on HCO(3)(-)-mediated oxidative reactions of SOD1 may help us understand the free radical mechanism of SOD1 and related mutants linked to amyotrophic lateral sclerosis.
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Affiliation(s)
- H Zhang
- Biophysics Research Institute, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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Rabin I, Schulze W, Ertl G, Felix C, Sieber C, Harbich W, Buttet J. Absorption and fluorescence spectra of Ar-matrix-isolated Ag3 clusters. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00211-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Roza AM, Cooper M, Pieper G, Hilton G, Dembny K, Lai CS, Lindholm P, Komorowski R, Felix C, Johnson C, Adams M. NOX 100, a nitric oxide scavenger, enhances cardiac allograft survival and promotes long-term graft acceptance. Transplantation 2000; 69:227-31. [PMID: 10670631 DOI: 10.1097/00007890-200001270-00006] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND We examined the role of nitrosative stress in allograft destruction. METHODS Rats undergoing cardiac transplants received NOX-100, a water-soluble nitric oxide (NO) scavenger with antioxidant properties, with or without low-dose cyclosporine (CsA). Graft survival, NO production, and nuclear factor kappa B (NF-kappaB) activity were studied. RESULT Using NOX-100 daily until rejection prolonged graft survival (11.6+/-0.6 vs. 7.4+/-0.2 days; P<0.05). Daily low-dose CsA (2.5 mg/kg im) for 7 days or until rejection also prolonged survival (12.6+/-0.5 and 21.6+/-1.6 days, respectively; P<0.01 vs. Controls). Low-dose CsA for 7 days and NOX-100 for 30 days prolonged graft survival (45.0+/-4.7 days; P<0.01 vs. all groups.). NOX-100 had no effect on whole blood CsA levels. Combination therapy until Day 100 resulted in 1 graft loss at Day 116 and indefinite survival in 3 animals (>300 days), which accepted a second WF strain heart without further immunosuppressive therapy but promptly rejected a third party (ACI) cardiac allograft. NOX-100 and CsA reduced nitrate and nitrite, and combination therapy completely normalized NO through to Day 30. Electron paramagnetic resonance spectroscopic analysis demonstrated reduction of signals for nitrosylmyoglobin and nitrosyl-heme with NOX-100 and elimination of signals with CsA alone or combination therapy. Activity of myocardial NF-kappaB decreased with monotherapy vs. untreated allografts. Combination therapy resulted in further inhibition of NF-kappaB up to Day 30. The extent of graft survival correlated with the extent of NO scavenging and NF-kappaB inhibition. Short-term combination therapy had no effect on graft lymphocytic infiltrate on Days 15, 20, and 30. CONCLUSION These data support a role for both oxidative and nitrosative stress in rejection and the immunoregulatory potential of antioxidant therapy after transplantation.
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Affiliation(s)
- A M Roza
- Department of Pathology, and The Biophysics Research Institute, Medical College of Wisconsin, Milwaukee 53226, USA
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Song WJ, Sullivan MG, Legare RD, Hutchings S, Tan X, Kufrin D, Ratajczak J, Resende IC, Haworth C, Hock R, Loh M, Felix C, Roy DC, Busque L, Kurnit D, Willman C, Gewirtz AM, Speck NA, Bushweller JH, Li FP, Gardiner K, Poncz M, Maris JM, Gilliland DG. Haploinsufficiency of CBFA2 causes familial thrombocytopenia with propensity to develop acute myelogenous leukaemia. Nat Genet 1999; 23:166-75. [PMID: 10508512 DOI: 10.1038/13793] [Citation(s) in RCA: 817] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Familial platelet disorder with predisposition to acute myelogenous leukaemia (FPD/AML, MIM 601399) is an autosomal dominant disorder characterized by qualitative and quantitative platelet defects, and propensity to develop acute myelogenous leukaemia (AML). Informative recombination events in 6 FPD/AML pedigrees with evidence of linkage to markers on chromosome 21q identified an 880-kb interval containing the disease gene. Mutational analysis of regional candidate genes showed nonsense mutations or intragenic deletion of one allele of the haematopoietic transcription factor CBFA2 (formerly AML1) that co-segregated with the disease in four FPD/AML pedigrees. We identified heterozygous CBFA2 missense mutations that co-segregated with the disease in the remaining two FPD/AML pedigrees at phylogenetically conserved amino acids R166 and R201, respectively. Analysis of bone marrow or peripheral blood cells from affected FPD/AML individuals showed a decrement in megakaryocyte colony formation, demonstrating that CBFA2 dosage affects megakaryopoiesis. Our findings support a model for FPD/AML in which haploinsufficiency of CBFA2 causes an autosomal dominant congenital platelet defect and predisposes to the acquisition of additional mutations that cause leukaemia.
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Affiliation(s)
- W J Song
- Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
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James C, Felix C. A 30-year-old pregnant woman with pulmonary edema from a clotted mechanical aortic valve. J Emerg Nurs 1998; 24:123-6. [PMID: 9775819 DOI: 10.1016/s0099-1767(98)90013-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- C James
- Methodist Hospital, Omaha, Nebraska, USA
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Pflugfelder SC, Tseng SC, Sanabria O, Kell H, Garcia CG, Felix C, Feuer W, Reis BL. Evaluation of subjective assessments and objective diagnostic tests for diagnosing tear-film disorders known to cause ocular irritation. Cornea 1998; 17:38-56. [PMID: 9436879 DOI: 10.1097/00003226-199801000-00007] [Citation(s) in RCA: 375] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE To determine which subjective assessments and objective tests have clinical utility as diagnostic tools in ocular irritation associated with Sjögren's syndrome-related aqueous tear deficiency (ATD), non-Sjögren ATD, inflammatory meibomian gland disease (MGD) associated with rosacea, and atrophic MGD. METHODS Forty adults with ocular irritation and 10 with normal ocular surfaces were enrolled in a nonrandomized, nonblinded clinical trial. Symptoms were evaluated. Tests included biomicroscopy; evaluation of tear-film integrity, production, and clearance; fluorescein and rose bengal staining; and serum autoantibody screening. RESULTS Symptoms were similar among groups and most severe in the Sjögren's group. Fluorescein tear break-up time was significantly faster in the ATD and MGD groups than that in controls. Schirmer scores were significantly lower in the ATD group than those in MGD and control groups. Tear clearance was delayed in the ATD and atrophic MGD groups. Xeroscope grid distortion was noted only with ATD. The Sjögren's group had greater loss of naso-lacrimal reflex, slower fluorescein clearance, and greater ocular-surface fluorescein and rose bengal staining than did the others. More MGD subjects had meibomian gland orifice metaplasia and acinar dropout than did those with Sjögren-related ATD and controls. Schirmer scores correlated inversely with rose bengal staining, corneal fluorescein staining, and grid distortion. Rose bengal staining correlated with grid distortion and loss of nasal-lacrimal reflex, but not with MGD. CONCLUSION Subjective assessments and objective diagnostic tests have clinical utility as diagnostic tools in tear-film disorders. ATD is correlated with ocular-surface disease. An algorithm summarizing the diagnostic utility of these tests is included.
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Affiliation(s)
- S C Pflugfelder
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami School of Medicine, Florida 33136, USA
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Abstract
PURPOSE To assess the in vitro susceptibility of ocular bacterial isolates from North and South America to antiinfectives that are commonly used in the treatment of external ocular infection. METHODS Ocular isolates (n = 1,291) from 12 laboratories in the United States, Canada, Mexico, and Argentina were tested for their susceptibility to ofloxacin, ciprofloxacin, norfloxacin, gentamicin, tobramycin, chloramphenicol, tetracycline, and erythromycin using both disk-diffusion and broth-dilution methods. RESULTS When the results from disk-diffusion and broth-dilution testing were combined, the relative overall in vitro efficacy was (in decreasing order): ofloxacin, ciprofloxacin, norfloxacin, gentamicin, chloramphenicol, tobramycin, tetracycline, and erythromycin. Against gram-positive organisms it was: ofloxacin, ciprofloxacin equivalent to chloramphenicol, norfloxacin, tetracycline, gentamicin, and erythromycin equivalent to tobramycin. Against gram-negative organisms it was: ofloxacin equivalent to ciprofloxacin and norfloxacin, gentamicin, tobramycin, chloramphenicol, and tetracycline comparable to erythromycin. CONCLUSIONS The fluoroquinolones ofloxacin, ciprofloxacin, and norfloxacin had higher overall in vitro efficacy than the other antibiotics tested. Of the fluoroquinolones, ofloxacin had the highest in vitro efficacy against gram-positive organisms. All three fluoroquinolones were equivalent in efficacy against gram-negative organisms.
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Affiliation(s)
- H G Jensen
- Allergan, Inc., Irvine, California 92715, USA
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McNamara M, Felix C, Davison EV, Fenton M, Kennedy SM. Assessment of chromosome 3 copy number in ocular melanoma using fluorescence in situ hybridization. Cancer Genet Cytogenet 1997; 98:4-8. [PMID: 9309111 DOI: 10.1016/s0165-4608(96)00405-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Recent reports have indicated that monosomy 3 is a marker of poor prognosis in uveal melanoma. Fluorescence in situ hybridization (FISH) was performed on fresh touch preparations from 17 uveal, and 5 conjunctival melanomas, using the chromosome 3 centromeric probe, D3Z1. Of the 17 uveal melanomas, all of which originated in the choroid, two cases revealed a monosomy of chromosome 3. One of the conjunctival melanomas contained a major clone that was trisomic for chromosome 3, and another conjunctival melanoma contained a tetrasomic population. FISH, using the alpha-satellite probe for chromosome 3 on uveal melanoma imprints, allows one to predict which patients are potentially at a higher risk of relapse. Multiplication, rather than deletion, of copies of chromosome 3 in conjunctival melanomas may be a nonspecific aberration, perhaps indicative of polyploidy, a characteristic of tumor progression.
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Affiliation(s)
- M McNamara
- Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
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Felix C, Singhvi A. Study of non-linear luminescence-dose growth curves for the estimation of paleodose in luminescence dating: Results of Monte Carlo simulations. RADIAT MEAS 1997. [DOI: 10.1016/s1350-4487(97)00022-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pflugfelder SC, Tseng SC, Yoshino K, Monroy D, Felix C, Reis BL. Correlation of goblet cell density and mucosal epithelial membrane mucin expression with rose bengal staining in patients with ocular irritation. Ophthalmology 1997; 104:223-35. [PMID: 9052626 DOI: 10.1016/s0161-6420(97)30330-3] [Citation(s) in RCA: 160] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE This study was designed to compare goblet cell densities and mucosal epithelial membrane mucin (MEM) expression in impression cytology specimens obtained from control subjects and patients with one of the following clinically defined diseases: aqueous tear deficiency (ATD) associated with Sjögren syndrome, ATD not associated with Sjögren syndrome, inflammatory Meibomian gland disease associated with rosacea, and Meibomian gland atrophy. These data were correlated with ocular surface rose Bengal staining scores, Schirmer scores, and HLA-DR antigen staining of conjunctival epithelial cells. METHODS Goblet cell density and MEM expression were studied by impression imprints with immunohistochemical staining using an anti-mucosal epithelial membrane mucin antibody in the temporal and inferior bulbar and inferior tarsal conjunctiva of study subjects. RESULTS Goblet cell density adjacent to the temporal limbus was significantly reduced at 3 mm posterior to the temporal limbus in both aqueous tear deficiency groups compared with the other groups and in patients with Sjögren syndrome compared with all other groups. In the inferior tarsus, goblet cell density was significantly reduced in patients with non-Sjögren syndrome ATD as compared with all other groups, except those with inflammatory Meibomian gland disease. Mucosal epithelial membrane mucin expression in the bulbar and tarsal conjunctiva was absent in a greater percentage of patients with Sjögren syndrome compared with all other groups. Total ocular surface rose Bengal staining scores were significantly higher in patients with Sjögren syndrome as compared with all other groups and in patients with non-Sjögren syndrome ATD as compared with control groups. Rose Bengal staining scores and Schirmer I test results (without anesthesia) were inversely correlated with bulbar, but not tarsal, conjunctival goblet cell densities, and with the absence of bulbar conjunctival MEM expression. CONCLUSIONS These results suggest that reduced goblet cell density and mucosal epithelial cell mucin expression could explain increased rose Bengal staining in patients with aqueous tear deficiency. In addition, MEM may be regarded as a marker for normal differentiation of ocular surface epithelia, with its absence signifying the development of squamous metaplasia.
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Affiliation(s)
- S C Pflugfelder
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami School of Medicine, FL 33136, USA
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Abstract
Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on a platinum(111) surface. Clusters with impact energies of </=1 electron volt per atom could be landed nondestructively on the bare substrate, whereas at higher kinetic energies fragmentation and substrate damage were observed. Clusters with elevated impact energy could be soft-landed via an argon buffer layer on the platinum substrate, which efficiently dissipated the kinetic energy. Nondestructive cluster deposition represents a promising method to produce monodispersed nanostructures at surfaces.
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Affiliation(s)
- K Bromann
- Institut de Physique Experimentale, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland
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Valla J, Corbineau H, Langanay T, Sevray B, Felix C, Sellin M, Le Couls H, Leguerrier A, Rioux C, Logeais Y. [Mediastinitis after cardiac surgery. A 10-year evaluation (1985-1995)]. Ann Cardiol Angeiol (Paris) 1996; 45:369-76. [PMID: 8952731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
UNLABELLED From June 1985 to May 1995, 9,814 patients were operated for a cardiac procedure with cardiopulmonary by-pass. Mean age was 61,3 years. The most frequent procedure was coronary surgery (45%), followed by valvular surgery (34%) then combined surgery (11%) and other surgery (4%). 66 cases of mediastinitis were observed: 38 from June 1985 to May 1990 (first group), 28 from June 1990 to May 1995 (second group). The changes between the two groups was antibiotic prophylaxis using Cefuroxime in the first group and Cefamandole in the second and also an impairment of general status of the patients in the second group. Staphylococcus remains the most frequent organism in both groups and for Gram negative bacteria was less frequent in the second group. Several risks factors mediastinitis were identified (males, emergency, diabetes mellitus, obesity, redo, patient of first group, duration of Cardiopulmonary by pass for 100 minutes, mechanical ventilation greater than 48 hours) and the most important factor was the need for mechanical ventilation for more than 48 hours. The mortality rate was 39.4% (26 patients). Identified risk factors of mortality were age over 65 years, females, poor constitution, and cardio/thoracic ratio > 0.55. CONCLUSION Mediastinitis after cardiac surgery remains a serious complication. In this series we observed a decrease of mediastinitis rates, especially in the second group (p < 0.001). In high risk patients, specific preoperative methods of patient care may be able to prevent such complications. When mediastinitis appears, and when debridement is necessary, a cover procedure seems necessary in elderly or poor constitution patients.
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Affiliation(s)
- S Bullock
- West Midlands Regional Genetic Laboratory, Birmingham Women's Health Care NHS Trust, U.K
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Sun ZY, Dowd SR, Felix C, Hyde JS, Ho C. Stopped-flow kinetic and biophysical studies of membrane-associated D-lactate dehydrogenase of Escherichia coli. Biochim Biophys Acta 1995; 1252:269-77. [PMID: 7578233 DOI: 10.1016/0167-4838(95)00120-j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The enzyme kinetics of the FAD-containing membrane-associated D-lactate dehydrogenase (D-LDH) of Escherichia coli have been investigated by stopped-flow spectroscopy. The reduction of D-LDH by the substrate, D-lactate, exhibits a two-stage behavior as observed by the absorbance change for the enzyme-bound FAD. The fast stage with a maximum rate of 400 s-1 represents the rapid formation of the enzyme-substrate complex and the formation of the equilibrium between the oxidized and the reduced enzyme-substrate complexes. The slow stage, which occurs on the order of 0.36 s-1, represents the slow release of the product, pyruvate, from the reduced enzyme. The formation of a D-LDH semiquinone radical was not observed during the oxidation of D-lactate by D-LDH at 25 degrees C. However, during the subsequent electron transfer from the reduced enzyme to a nitroxide spin-label, a one-electron acceptor, an enzyme intermediate has been observed and identified by both optical and EPR spectroscopies as an anionic semiquinone. Results from 1H-NMR spectroscopic studies suggest the possible formation of a substrate carbanion when D-lactate is bound at the active site of D-LDH.
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Affiliation(s)
- Z Y Sun
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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Amsler C, Armstrong DS, Augustin I, Baker CA, Barnett BM, Batty CJ, Beuchert K, Birien P, Blüm P, Bossingham R, Braune K, Brose J, Bugg DV, Burchell M, Case T, Cooper A, Cramer O, Crowe KM, Degener T, Dietz HP, Dombrowski SV, Doser M, Dünnweber W, Engelhardt D, Englert M, Faessler MA, Felix C, Hackmann R, Haddock RP, Heinsius FH, Herz M, Hessey NP, Hidas P, Illinger P, Jamnik D, Kalinowsky H, Kämmle B, Kiel T, Kisiel J, Klempt E, Kobel M, Koch H, Kolo C, Königsmann K, Kuhn J, Kunze M, Lakata M, Landua R, Lüdemann J, Matthäy H, Merkel M, Merlo JP, Meyer CA, Montanet L, Noble A, Ould-Saada F, Peters K, Pinder CN, Pinter G, Ravndal S, Schäfer E, Schmidt P, Spanier S, Stöck H, Straßburger C, Strohbusch U, Suffert M, Thoma U, Urner D, Völcker C, Walter F, Walther D, Wiedner U, Winter N, Zoll J, Zou BS, Zupančič Č. First observations of Pontecorvo reactions with a recoiling neutron. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01290916] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Balmaceda JP, Bernardini L, Ciuffardi I, Felix C, Ord T, Sueldo CE, Asch RH. Oocyte donation in humans: a model to study the effect of age on embryo implantation rate. Hum Reprod 1994; 9:2160-3. [PMID: 7868691 DOI: 10.1093/oxfordjournals.humrep.a138410] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Although a number of different mechanisms have been suggested to account for the decline of fertility with age, the majority of studies agree that poor oocyte quality and reduced endometrial receptivity are the most important. In fact, the increased incidence of early pregnancy loss and chromosomal abnormalities of oocytes in older women, as well as the ability to reverse decreasing pregnancy rates by using oocyte donation, strongly support the evidence that oocyte ageing is the main factor responsible for decreasing fertility. Conversely, the lack of knowledge of the physiological variables that determine a successful nidation of a human embryo makes the analysis of uterine receptivity much more difficult. In order to evaluate the impact of the age of donors and recipients on pregnancy, implantation and abortion rates, we have retrospectively analysed 258 cycles from our programme of oocyte donation. Results were reviewed according to the following subclasses of age groups: < or = 30, 31-35 and 36-39 years for donors, and < or = 30, 31-35, 36-40, 41-45 and 46-53 years for recipients.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J P Balmaceda
- University of California, Irvine, Department of Obstetrics and Gynecology, Orange 92613-1491
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Amsler C, Armstrong DS, Augustin I, Baker CA, Barnett BM, Batty CJ, Beuchert K, Birien P, Bistirlich J, Blum P, Bossingham R, Bossy H, Braune K, Brose J, Bugg DV, Burchell M, Case T, Chung SU, Cooper A, Crowe KM, Dietz HP, Dombrowski S, Doser M, Dünnweber W, Engelhardt D, Englert M, Faessler MA, Felix C, Folger G, Hackmann R, Haddock RP, Heinsius FH, Hessey NP, Hidas P, Illinger P, Jamnik D, Jávorfi Z, Kalinowsky H, Kämmle B, Kiel T, Kisiel J, Klempt E, Kobel M, Koch H, Kolo C, Königsmann K, Kunze M, Landua R, Lüdemann J, Matthaey H, Merkel M, Merlo JP, Meyer CA, Meyer-Berkhout U, Montanet L, Noble A, Ould-Saada F, Peters K, Pinter G, Ravndal S, Sanjari AH, Schäfer E, Schmid B, Schmidt P, Spanier S, Straßburger C, Strohbusch U, Suffert M, Urner D, Völcker C, Walter F, Walther D, Wiedner U, Winter N, Zoll J, Zupančič Č. Antiproton-proton annihilation at rest into two-body final states. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf01560336] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Narváez M, Weigel MM, Felix C, López A, López-Jaramillo P. The clinical utility of the roll-over test in predicting pregnancy-induced hypertension in a high-risk Andean population. Int J Gynaecol Obstet 1990; 31:9-14. [PMID: 1968025 DOI: 10.1016/0020-7292(90)90174-j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The utility of the roll-over test (ROT) as a prognostic tool for predicting pregnancy-induced hypertension (PIH) was examined in primiparas in Quito, Ecuador. In Study I, 14 of 16 subjects with a +ROT developed PIH (positive predictive value (PPV) = 88%); only 2 of 27 subjects with a -ROT developed PIH (negative predictive value (NPV) = 92.5%). In Study II (n = 66), the PPV and NPV were 71.4% and 78.6%, respectively. Data from these and previous studies indicate that although the ROT is not a perfect predictor, its advantages recommend usage in populations with high PIH-associated maternal and perinatal mortality.
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Affiliation(s)
- M Narváez
- Laboratorio de Metabolismo y Nutricion, Facultad de Ciencias Medicas, Universidad Central del Ecuador, Quito, Ecuador
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Colamonici OR, Rosolen A, Cole D, Kirsch I, Felix C, Poplack DG, Neckers LM. Stimulation of the beta-subunit of the IL-2 receptor induces MHC-unrestricted cytotoxicity in T acute lymphoblastic leukemia cells and normal thymocytes. The Journal of Immunology 1988. [DOI: 10.4049/jimmunol.141.4.1202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Recently, several laboratories have identified a novel protein(s) of 70,000 to 75,000 Da (IL-2R beta-subunit) that, when expressed with the p55 Tac protein (alpha-subunit), imparts high affinity IL-2 binding. Expression of the beta-subunit mediates acquisition of MHC-unrestricted cytotoxicity in large granular lymphocytes. We report that thymocytes and T acute lymphoblastic leukemia cells express the beta-subunit of the IL-2R in the absence of detectable alpha-subunit expression and that IL-2 induces acquisition of MHC-unrestricted cytotoxic activity in these cells through stimulation of the beta-subunit.
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Affiliation(s)
- O R Colamonici
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - A Rosolen
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - D Cole
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - I Kirsch
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - C Felix
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - D G Poplack
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - L M Neckers
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
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Colamonici OR, Rosolen A, Cole D, Kirsch I, Felix C, Poplack DG, Neckers LM. Stimulation of the beta-subunit of the IL-2 receptor induces MHC-unrestricted cytotoxicity in T acute lymphoblastic leukemia cells and normal thymocytes. J Immunol 1988; 141:1202-5. [PMID: 3135323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Recently, several laboratories have identified a novel protein(s) of 70,000 to 75,000 Da (IL-2R beta-subunit) that, when expressed with the p55 Tac protein (alpha-subunit), imparts high affinity IL-2 binding. Expression of the beta-subunit mediates acquisition of MHC-unrestricted cytotoxicity in large granular lymphocytes. We report that thymocytes and T acute lymphoblastic leukemia cells express the beta-subunit of the IL-2R in the absence of detectable alpha-subunit expression and that IL-2 induces acquisition of MHC-unrestricted cytotoxic activity in these cells through stimulation of the beta-subunit.
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MESH Headings
- Child
- Cytotoxicity, Immunologic
- Humans
- Interleukin-2/metabolism
- Leukemia, Lymphoid/genetics
- Leukemia, Lymphoid/immunology
- Leukemia, Lymphoid/metabolism
- Major Histocompatibility Complex
- Phenotype
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Immunologic/isolation & purification
- Receptors, Immunologic/metabolism
- Receptors, Interleukin-2
- T-Lymphocytes, Cytotoxic/immunology
- Thymus Gland/cytology
- Thymus Gland/metabolism
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Affiliation(s)
- O R Colamonici
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
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49
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Colamonici OR, Ang S, Quinones R, Henkart P, Heikkila R, Gress R, Felix C, Kirsch I, Longo D, Marti G. IL-2-dependent expansion of CD3+ large granular lymphocytes expressing T cell receptor-gamma delta. Evidence for a functional receptor by anti-CD3 activation of cytolysis. The Journal of Immunology 1988. [DOI: 10.4049/jimmunol.140.8.2527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The nature and function of the TCR on PBL of a patient with a chronic CD3+ large granular (LGL) proliferation was studied. Fresh peripheral blood from this individual was comprised of 80% lymphocytes, 65 to 75% of which were CD3+, CD8+, Leu-7+ LGL. Of these LGL, 72% initially expressed the TCR-alpha beta heterodimer, whereas 21% did not. Cytotoxicity directed against MHC-unrestricted targets was minimal. After several days of exposure to rIL-2, cytotoxic activity was greatly enhanced, correlating with a disappearance of CD3+ cells expressing the alpha beta heterodimer. Twelve days after rIL-2 exposure, the LGL expressed only TCR-gamma delta heterodimer in association with CD3 and alpha beta heterodimer expression could no longer be detected. The TCR/CD3 complex on these cells was demonstrated to be functional as anti-CD3 elicited an increase in cytoplasmic free calcium concentration, stimulated cytolytic activity, and stimulated granule enzyme secretion from the LGL.
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Affiliation(s)
- O R Colamonici
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - S Ang
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - R Quinones
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - P Henkart
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - R Heikkila
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - R Gress
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - C Felix
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - I Kirsch
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - D Longo
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
| | - G Marti
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
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50
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Colamonici OR, Ang S, Quinones R, Henkart P, Heikkila R, Gress R, Felix C, Kirsch I, Longo D, Marti G. IL-2-dependent expansion of CD3+ large granular lymphocytes expressing T cell receptor-gamma delta. Evidence for a functional receptor by anti-CD3 activation of cytolysis. J Immunol 1988; 140:2527-33. [PMID: 2965722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The nature and function of the TCR on PBL of a patient with a chronic CD3+ large granular (LGL) proliferation was studied. Fresh peripheral blood from this individual was comprised of 80% lymphocytes, 65 to 75% of which were CD3+, CD8+, Leu-7+ LGL. Of these LGL, 72% initially expressed the TCR-alpha beta heterodimer, whereas 21% did not. Cytotoxicity directed against MHC-unrestricted targets was minimal. After several days of exposure to rIL-2, cytotoxic activity was greatly enhanced, correlating with a disappearance of CD3+ cells expressing the alpha beta heterodimer. Twelve days after rIL-2 exposure, the LGL expressed only TCR-gamma delta heterodimer in association with CD3 and alpha beta heterodimer expression could no longer be detected. The TCR/CD3 complex on these cells was demonstrated to be functional as anti-CD3 elicited an increase in cytoplasmic free calcium concentration, stimulated cytolytic activity, and stimulated granule enzyme secretion from the LGL.
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Affiliation(s)
- O R Colamonici
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD 20892
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