1
|
Goldsmith A, Duggan N, Jin M, Lucassen R, Fischetti C, Ferre R, Boyer E, Kapur T, Pang P, Russell F. 197 Deep Learning-Based Scoring of Pulmonary Congestion for BLUSHED AHF Trial. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.221] [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]
|
2
|
Ntsogo Y, Lustig M, Boyer E, Daury L, Phan G, Lambert O, Broutin I. Towards the comprehension of the assembly and opening of the MexAB-OprM efflux pump involved in the antibiotic resistance of Pseudomonas aeruginosa. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322096188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
|
3
|
Tomaszewski MR, Latifi K, Boyer E, Palm RF, El Naqa I, Moros EG, Hoffe SE, Rosenberg SA, Frakes JM, Gillies RJ. Delta radiomics analysis of Magnetic Resonance guided radiotherapy imaging data can enable treatment response prediction in pancreatic cancer. Radiat Oncol 2021; 16:237. [PMID: 34911546 PMCID: PMC8672552 DOI: 10.1186/s13014-021-01957-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/22/2021] [Indexed: 12/22/2022] Open
Abstract
Background Magnetic Resonance Image guided Stereotactic body radiotherapy (MRgRT) is an emerging technology that is increasingly used in treatment of visceral cancers, such as pancreatic adenocarcinoma (PDAC). Given the variable response rates and short progression times of PDAC, there is an unmet clinical need for a method to assess early RT response that may allow better prescription personalization. We hypothesize that quantitative image feature analysis (radiomics) of the longitudinal MR scans acquired before and during MRgRT may be used to extract information related to early treatment response. Methods Histogram and texture radiomic features (n = 73) were extracted from the Gross Tumor Volume (GTV) in 0.35T MRgRT scans of 26 locally advanced and borderline resectable PDAC patients treated with 50 Gy RT in 5 fractions. Feature ratios between first (F1) and last (F5) fraction scan were correlated with progression free survival (PFS). Feature stability was assessed through region of interest (ROI) perturbation. Results Linear normalization of image intensity to median kidney value showed improved reproducibility of feature quantification. Histogram skewness change during treatment showed significant association with PFS (p = 0.005, HR = 2.75), offering a potential predictive biomarker of RT response. Stability analyses revealed a wide distribution of feature sensitivities to ROI delineation and was able to identify features that were robust to variability in contouring. Conclusions This study presents a proof-of-concept for the use of quantitative image analysis in MRgRT for treatment response prediction and providing an analysis pipeline that can be utilized in future MRgRT radiomic studies. Supplementary Information The online version contains supplementary material available at 10.1186/s13014-021-01957-5.
Collapse
Affiliation(s)
- M R Tomaszewski
- Cancer Physiology Department, H. Lee Moffitt Cancer Center and Research Institute, 12902 USF Magnolia Dr, Tampa, FL, 33612, USA.,Translation Imaging Department, Merck & Co, West Point, PA, USA
| | - K Latifi
- Medical Physics Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - E Boyer
- Radiation Oncology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - R F Palm
- Radiation Oncology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - I El Naqa
- Machine Learning Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - E G Moros
- Medical Physics Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - S E Hoffe
- Radiation Oncology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - S A Rosenberg
- Radiation Oncology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - J M Frakes
- Radiation Oncology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - R J Gillies
- Cancer Physiology Department, H. Lee Moffitt Cancer Center and Research Institute, 12902 USF Magnolia Dr, Tampa, FL, 33612, USA.
| |
Collapse
|
4
|
Regas I, Saizonou I, Pichonnat M, Menez C, Menu G, El Rifai S, Echalier C, Boyer E, Loisel F, Aubry S, Obert L, Feuvrier D, Pluvy I. Influence of the level of arterial resection on the replanting and revascularization results in hand surgery: prospective study over 22 months. Hand Surg Rehabil 2021; 40:660-669. [PMID: 34111576 DOI: 10.1016/j.hansur.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/30/2021] [Accepted: 06/01/2021] [Indexed: 11/19/2022]
Abstract
The objective of this work was to assess whether the injury mechanisms are responsible for histological arterial lesions. This prospective single-center study included adults with wrist or hand arterial injury. Arterial resection of at least 2 mm from the proximal and distal stumps was performed before the arterial anastomosis. Histological analysis of the arterial stumps was performed. An ultrasound was performed 1 month postoperatively to check arterial patency. A clinical and functional evaluation was done at 1 month postoperative, then every 3 months. From 2018 to 2020, 46 patients were included with a maximum follow-up of 13 months. There were 35 cuts, 2 crush injuries, 8 amputation and 1 blast injury. Macroscopically, 37% of the margins were considered damaged. Histological analysis showed significant damage in 59% of the sections (27 out of 46 patients) with 50% for crush injury, 55% for cuts by mechanical tool, 62% for cuts by power tool, 62% for amputations and 100% for blasts. The failure rate was 9%: 2 replantations and 2 asymptomatic thromboses diagnosed by ultrasound. Postoperative pain on VAS was 1.75/10, range of motion was 87%, Quick DASH was 8%, SF36 PCS was 69% and SF36 MCS was 70%. Factors influencing the success or failure of anastomosis were the mechanism of injury (p = 0.02), associated nerve damage (p = 0.014) and length of proximal arterial cut (p = 0.046). Histological arterial lesions seem to correlate with the injury mechanism. Cuts caused by glass or crush injuries do not seem to require arterial resections of more than 2 mm. A continuation of the study with a larger number of subjects may generate statistically significant results.
Collapse
Affiliation(s)
- I Regas
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France.
| | - I Saizonou
- Service d'Anatomo-Pathologie, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France
| | - M Pichonnat
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - C Menez
- Service d'Orthopédie et de Traumatologie, Hôpital Chaumont, 17 Avenue des Etats Unis, 52000 Chaumont, France
| | - G Menu
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - S El Rifai
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France
| | - C Echalier
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - E Boyer
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - F Loisel
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - S Aubry
- Service d'Imagerie Ostéoarticulaire, Radiologie Interventionnelle, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France
| | - L Obert
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| | - D Feuvrier
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France
| | - I Pluvy
- Service d'Orthopédie, de Traumatologie, de Chirurgie Plastique, Reconstructrice et Assistance Main, CHU de Besançon, 3 Boulevard Alexandre Fleming, 25030 Besançon, France; Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France; Nanomédecine, Imagerie, Thérapeutique-EA 4662, Université de Bourgogne Franche-Comté, Sciences Médicales et Pharmaceutiques, 19 Rue Ambroise Paré, 25030 Besançon, France
| |
Collapse
|
5
|
Pouliquen A, Boyer E, Sixou JL, Fong SB, Marie-Cousin A, Meuric V. Oral sedation in dentistry: evaluation of professional practice of oral hydroxyzine in the University Hospital of Rennes, France. Eur Arch Paediatr Dent 2021; 22:801-811. [PMID: 33840073 DOI: 10.1007/s40368-021-00620-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 03/29/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE Management of a child's anxiety early in their treatment is essential in dentistry. Sedative medications are used to overcome increased anxiety from previous appointments and to promote the cooperation of children during treatment. Hydroxyzine is currently prescribed to young patients as part of the first level of conscious sedation. The main objective was to evaluate the professional practice of oral hydroxyzine, when prescribed for children presenting anxiety during dental treatment procedure performed by students and senior practitioners. METHODS A retrospective study of dental records and questionnaires was conducted at the Dental Care Centre of the University Hospital of Rennes, France. Parameters related to the prescription of hydroxyzine in children were evaluated as potential predictors of the dental session success, with adjustments on potential confounders. RESULTS The therapeutic outcome was very encouraging with 78.3% of success during dental sessions under sedation with oral hydroxyzine. Anxiety levels before the dental procedure and the medication compliance of the child were the main predictors of success. On the other hand, lower age (< 6 years old) and longer treatments (such as pulpotomy) worsened the outcome. CONCLUSIONS Careful analysis of the literature and results of this work showed the safety of hydroxyzine within the maximum dose authorized without adverse effects, compared to other molecules described and commonly used in dentistry. No adverse effects during dental procedure were noted. This allows for minimal sedation with efficiency for the great majority of pediatric treatment. This solution should be the first step in sedation to help practicing clinicians.
Collapse
Affiliation(s)
- A Pouliquen
- Paediatric Dentistry Department, Univ Rennes 1, CHU de Rennes, Rennes, France
| | - E Boyer
- Paediatric Dentistry Department, Univ Rennes 1, CHU de Rennes, Rennes, France. .,INSERM, INRAE, Univ Rennes 1, CHU de Rennes, Nutrition Metabolisms and Cancer, Rennes, France.
| | - J-L Sixou
- Paediatric Dentistry Department, Univ Rennes 1, CHU de Rennes, Rennes, France
| | - S B Fong
- University of Rennes 1, Rennes, France
| | - A Marie-Cousin
- Paediatric Dentistry Department, Univ Rennes 1, CHU de Rennes, Rennes, France
| | - V Meuric
- Paediatric Dentistry Department, Univ Rennes 1, CHU de Rennes, Rennes, France.,INSERM, INRAE, Univ Rennes 1, CHU de Rennes, Nutrition Metabolisms and Cancer, Rennes, France
| |
Collapse
|
6
|
Boyer E, Igeta Y, Facca S, Xavier F, Liverneaux P, Prunières G. Surgical treatment of phlegmons of the digital flexor tendon sheaths at the early stage: Lavage by conventional open technique versus ultrasound-guided percutaneous technique. ANN CHIR PLAST ESTH 2019; 64:344-350. [DOI: 10.1016/j.anplas.2019.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 04/19/2019] [Indexed: 11/25/2022]
|
7
|
Boyer E, Igeta Y, Jiang S, Arianni M, Goldammer F, Prunières G, Paun A, Vernet P, Liverneaux P. Designing a minimally-invasive, ultrasound-guided, percutaneous flexor tendon sheath lavage technique: a cadaver study. Hand Surg Rehabil 2019; 38:87-90. [PMID: 30655220 DOI: 10.1016/j.hansur.2018.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/25/2018] [Accepted: 12/14/2018] [Indexed: 11/28/2022]
Abstract
The goal of this study was to develop a minimally-invasive, ultrasound-guided percutaneous flexor tendon sheath lavage technique on cadaver model. Two catheters were inserted using ultrasound guidance at the proximal and distal ends of the tendon sheath in 20 fingers from cadaveric forearms. Percutaneous injection of a saline solution colored with methylene blue resulted in anterograde lavage of the flexor tendon sheath. The technique was successful in 13 out of 20 cases. The proximal catheter was in the correct position in 17 cases and the distal catheter was correctly positioned in 15 cases. The flexor tendons were continuous in all cases and had puncture wounds in 9 cases. Based on our study, this minimally-invasive, ultrasound-guided percutaneous lavage of the flexor tendon sheath was effective in 65% of cases and safe in 100% of cases in the index, middle and ring fingers. If this percutaneous lavage fails, it is always possible to switch to a conventional open technique.
Collapse
Affiliation(s)
- E Boyer
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France
| | - Y Igeta
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France; Department of Orthopedic Surgery, Juntendo Nerima Hospital, 3-1-10, Takanedai, Nerima-ku, Tokyo, 177-8521, Japan
| | - S Jiang
- Department of Hand Surgery, Huashan Hospital, Shanghai Medical College, Fudan University, 138 Yixueyuan Road, Shanghai, 200040, China; Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, No.12 Wulumuqi Middle Road, 200040, Shanghai, Popular Republic of China
| | - M Arianni
- Hand Clinic, Ramsay Premier Bintaro Hospital, Jl. MH Thamrin no.1, Bintaro Jaya sector Tangerang Selatan, 15224, Banten, Indonesia
| | - F Goldammer
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France
| | - G Prunières
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France
| | - A Paun
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France
| | - P Vernet
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France
| | - P Liverneaux
- Department of Hand Surgery, SOS main, CCOM, University Hospital of Strasbourg, FMTS, University of Strasbourg, Icube CNRS 7357, 10 avenue Baumann, 67400 Illkirch, France.
| |
Collapse
|
8
|
Simeonov DR, Gowen BG, Boontanrart M, Roth TL, Gagnon JD, Mumbach MR, Satpathy AT, Lee Y, Bray NL, Chan AY, Lituiev DS, Nguyen ML, Gate RE, Subramaniam M, Li Z, Woo JM, Mitros T, Ray GJ, Curie GL, Naddaf N, Chu JS, Ma H, Boyer E, Van Gool F, Huang H, Liu R, Tobin VR, Schumann K, Daly MJ, Farh KK, Ansel KM, Ye CJ, Greenleaf WJ, Anderson MS, Bluestone JA, Chang HY, Corn JE, Marson A. Author Correction: Discovery of stimulation-responsive immune enhancers with CRISPR activation. Nature 2018; 559:E13. [PMID: 29899441 DOI: 10.1038/s41586-018-0227-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this Letter, analysis of steady-state regulatory T (Treg) cell percentages from Il2ra enhancer deletion (EDEL) and wild-type (WT) mice revealed no differences between them (Extended Data Fig. 9d). This analysis included two mice whose genotypes were incorrectly assigned. Even after correction of the genotypes, no significant differences in Treg cell percentages were seen when data across experimental cohorts were averaged (as was done in Extended Data Fig. 9d). However, if we normalize the corrected data to account for variation among experimental cohorts, a subtle decrease in EDEL Treg cell percentages is revealed and, using the corrected and normalized data, we have redrawn Extended Data Fig. 9d in Supplementary Fig. 1. The Supplementary Information to this Amendment contains the corrected and reanalysed Extended Data Fig. 9d. The sentence "This enhancer deletion (EDEL) strain also had no obvious T cell phenotypes at steady state (Extended Data Fig. 9)." should read: "This enhancer deletion (EDEL) strain had a small decrease in the percentage of Treg cells (Extended Data Fig. 9).". This error does not affect any of the main figures in the Letter or the data from mice with the human autoimmune-associated single nucleotide polymorphism (SNP) knocked in or with a 12-base-pair deletion at the site (12DEL). In addition, we stated in the Methods that we observed consistent immunophenotypes of EDEL mice across three founders, but in fact, we observed consistent phenotypes in mice from two founders. This does not change any of our conclusions and the original Letter has not been corrected.
Collapse
Affiliation(s)
- Dimitre R Simeonov
- Biomedical Sciences Graduate Program, University of California, San Francisco, California, 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Benjamin G Gowen
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Mandy Boontanrart
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Theodore L Roth
- Biomedical Sciences Graduate Program, University of California, San Francisco, California, 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - John D Gagnon
- Biomedical Sciences Graduate Program, University of California, San Francisco, California, 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Sandler Asthma Basic Research Center, University of California, San Francisco, California, 94143, USA
| | - Maxwell R Mumbach
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, California, 94305, USA.,Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California, 94305, USA.,Department of Genetics, Stanford University School of Medicine, Stanford, California, 94305, USA
| | - Ansuman T Satpathy
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, California, 94305, USA.,Department of Genetics, Stanford University School of Medicine, Stanford, California, 94305, USA
| | - Youjin Lee
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Nicolas L Bray
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Alice Y Chan
- Diabetes Center, University of California, San Francisco, California, 94143, USA.,Department of Pediatrics, University of California, San Francisco, California, 94143, USA
| | - Dmytro S Lituiev
- Department of Epidemiology and Biostatistics, Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics (IHG), University of California, San Francisco, California, 94143, USA
| | - Michelle L Nguyen
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Rachel E Gate
- Department of Epidemiology and Biostatistics, Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics (IHG), University of California, San Francisco, California, 94143, USA.,Biological and Medical Informatics Graduate Program, University of California, San Francisco, California, 94158, USA
| | - Meena Subramaniam
- Department of Epidemiology and Biostatistics, Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics (IHG), University of California, San Francisco, California, 94143, USA.,Biological and Medical Informatics Graduate Program, University of California, San Francisco, California, 94158, USA
| | - Zhongmei Li
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Jonathan M Woo
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Therese Mitros
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Graham J Ray
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Gemma L Curie
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Nicki Naddaf
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Julia S Chu
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Hong Ma
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA
| | - Eric Boyer
- Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Frederic Van Gool
- Diabetes Center, University of California, San Francisco, California, 94143, USA
| | - Hailiang Huang
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, 02142, USA.,Analytic and Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, 02114, USA
| | - Ruize Liu
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, 02142, USA.,Analytic and Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, 02114, USA
| | - Victoria R Tobin
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Kathrin Schumann
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Diabetes Center, University of California, San Francisco, California, 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA
| | - Mark J Daly
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, 02142, USA.,Analytic and Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, 02114, USA
| | - Kyle K Farh
- Illumina Inc., 5200 Illumina Way, San Diego, California, 92122, USA
| | - K Mark Ansel
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA.,Sandler Asthma Basic Research Center, University of California, San Francisco, California, 94143, USA
| | - Chun J Ye
- Department of Epidemiology and Biostatistics, Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics (IHG), University of California, San Francisco, California, 94143, USA
| | - William J Greenleaf
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, California, 94305, USA.,Department of Genetics, Stanford University School of Medicine, Stanford, California, 94305, USA.,Department of Applied Physics, Stanford University, Stanford, California, 94025, USA.,Chan Zuckerberg Biohub, San Francisco, California, 94158, USA
| | - Mark S Anderson
- Diabetes Center, University of California, San Francisco, California, 94143, USA.,Department of Medicine, University of California, San Francisco, California, 94143, USA
| | - Jeffrey A Bluestone
- Diabetes Center, University of California, San Francisco, California, 94143, USA
| | - Howard Y Chang
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, California, 94305, USA.,Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California, 94305, USA
| | - Jacob E Corn
- Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA. .,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, 94720, USA.
| | - Alexander Marson
- Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA. .,Diabetes Center, University of California, San Francisco, California, 94143, USA. .,Innovative Genomics Institute, University of California, Berkeley, California, 94720, USA. .,Chan Zuckerberg Biohub, San Francisco, California, 94158, USA. .,Department of Medicine, University of California, San Francisco, California, 94143, USA. .,UCSF Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, California, 94158, USA.
| |
Collapse
|
9
|
Leclerc B, Boyer E, Menu G, Leclerc G, Sergent P, Ducroux E, Salomon Du Mont L, Garbuio P, Rinckenbach S, Obert L. Two-team management of vascular injuries concomitant with osteo-articular injuries in 36 patients over six years. Orthop Traumatol Surg Res 2018; 104:497-502. [PMID: 29578106 DOI: 10.1016/j.otsr.2018.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 02/02/2018] [Accepted: 02/06/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Patients with both vascular and osteoarticular injuries require multidisciplinary management. Vascular injuries may be function- and/or life-threatening. The lower limbs are predominantly affected. Traffic, domestic, and work-related accidents contribute most of the cases. The primary objective of this study was to describe the management of patients with concomitant vascular and osteo-articular injuries, with special attention to the rates of amputation and fasciotomy. The secondary objective was to suggest a management sequence to optimise our surgical practice. HYPOTHESIS The management sequence is a crucial consideration in patients with both vascular and osteo-articular injuries. MATERIAL AND METHODS A 6-year, retrospective, observational study was conducted in patients with concomitant vascular and osteo-articular injuries. RESULTS The study included 36 patients with a mean age of 40.6±22.1 years. The main sources of injury were traffic accidents (n=19, 52.8%), crush injury (n=8, 22.2%), and falls (n=5, 13.9%). A compound fracture was present in 20 (55.6%) patients. Evidence of ischaemia in 25 (69.4%) patients, and bleeding in 11 (30.6%) patients. Pre-operative imaging, by ultrasonography or computed tomography, was performed in 27 (75.0%) patients. The lower limb was involved in 30 (83.3%) patients, who had osteoarticular injuries to the femur and leg combined with injury to the popliteal artery. Fasciotomy was performed in 11 (30.6%) patients and secondary amputation in 7 (19.4%) patients. The limb salvage rate was 80.6%. Median patient survival was 9.3 [0-74.8] months. DISCUSSION Coordinated work by two surgical teams is crucial to manage concomitant vascular and osteo-articular injuries. The management sequence must be defined clearly. Computed tomography angiography is the investigation of choice and should be performed at the slightest suspicion of vascular injury. LEVEL OF EVIDENCE IV, retrospective observational study.
Collapse
Affiliation(s)
- B Leclerc
- Service de chirurgie vasculaire et endovasculaire, hôpital Jean Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA 3920, université de Franche-Comté, 25000 Besançon, France.
| | - E Boyer
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| | - G Menu
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| | - G Leclerc
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| | - P Sergent
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| | - E Ducroux
- Service de chirurgie vasculaire et endovasculaire, hôpital Jean Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA 3920, université de Franche-Comté, 25000 Besançon, France
| | - L Salomon Du Mont
- Service de chirurgie vasculaire et endovasculaire, hôpital Jean Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA 3920, université de Franche-Comté, 25000 Besançon, France
| | - P Garbuio
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| | - S Rinckenbach
- Service de chirurgie vasculaire et endovasculaire, hôpital Jean Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA 3920, université de Franche-Comté, 25000 Besançon, France
| | - L Obert
- Service de chirurgie orthopédique , traumatologique, de chirurgie plastique, reconstructrice et assistance main, hôpital Jean-Minjoz, centre hospitalier universitaire, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA Nano Médecine-FEMTO, 25000 Besançon, France
| |
Collapse
|
10
|
Loisel F, Menu G, Boyer E, Pluvy I, Obert L. Radiation exposure and the orthopedic surgeon's hand: Measurement of the equivalent dose over 13 months. Hand Surg Rehabil 2017; 36:97-101. [PMID: 28325434 DOI: 10.1016/j.hansur.2016.11.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 11/20/2016] [Accepted: 11/27/2016] [Indexed: 12/16/2022]
Abstract
Exposure to ionizing radiation in the operating room is governed by practical prevention and protection measures on the international, national and local levels. We evaluated the equivalent dose to the hand of an orthopedic surgeon over 13 months. An orthopedic surgeon wore a ring dosimeter on the ring finger of his right hand for all surgical procedures requiring intraoperative fluoroscopy between March 2014 and April 2015. Monthly doses were evaluated by the IRSN over the study period. The number and type of procedures were compiled as well as the type of fluoroscopy unit used. Four hundred procedures were performed during this period, including 182 with fluoroscopy. The equivalent cumulative dose at the hand was 4,75 mSv. No correlation was found with the type of procedure or type of fluoroscopy unit (conventional or mini C-arm). Equivalent doses were below the annual regulatory limit in France of 500 mSv. These results are consistent with those reported in the literature. However, recent studies have noted that both younger surgeons in training and more experienced surgeons must remember to use radiation protection measures.
Collapse
Affiliation(s)
- F Loisel
- Orthopedic, traumatology and hand surgery unit, research unit: EA 4268 I4S-IFR 133 Inserm, CHRU of Besançon, university of Bourgogne Franche-Comté, boulevard Fleming, 25030 Besançon cedex, France.
| | - G Menu
- Orthopedic, traumatology and hand surgery unit, research unit: EA 4268 I4S-IFR 133 Inserm, CHRU of Besançon, university of Bourgogne Franche-Comté, boulevard Fleming, 25030 Besançon cedex, France
| | - E Boyer
- Orthopedic, traumatology and hand surgery unit, research unit: EA 4268 I4S-IFR 133 Inserm, CHRU of Besançon, university of Bourgogne Franche-Comté, boulevard Fleming, 25030 Besançon cedex, France
| | - I Pluvy
- Orthopedic, traumatology and hand surgery unit, research unit: EA 4268 I4S-IFR 133 Inserm, CHRU of Besançon, university of Bourgogne Franche-Comté, boulevard Fleming, 25030 Besançon cedex, France
| | - L Obert
- Orthopedic, traumatology and hand surgery unit, research unit: EA 4268 I4S-IFR 133 Inserm, CHRU of Besançon, university of Bourgogne Franche-Comté, boulevard Fleming, 25030 Besançon cedex, France
| |
Collapse
|
11
|
Loisel F, Menez C, Boyer E, Huard S, Obert L. [Treatment of extra-articular distal radius fractures in active elderly patients]. Hand Surg Rehabil 2016; 35S:S133-S136. [PMID: 27890198 DOI: 10.1016/j.hansur.2016.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 12/01/2015] [Accepted: 02/02/2016] [Indexed: 10/20/2022]
Abstract
Extra-articular distal radius fractures in active elderly patients are common and predominantly affect females. The high number of patients lost to follow-up compromises the evaluation of outcomes. Treatment aims to control the comminution and allow fast recovery of pre-injury activity levels. Fixation with volar locking plates is the gold standard. The role of bone substitutes in this type of injury is unclear.
Collapse
Affiliation(s)
- F Loisel
- Service d'orthopédie, de traumatologie, de chirurgie plastique, reconstructrice et assistance main, EA 4268 « I4S » IFR 133 Inserm, CHRU de Besançon, boulevard Fleming, 25000 Besançon, France
| | - C Menez
- Service d'orthopédie, de traumatologie, de chirurgie plastique, reconstructrice et assistance main, EA 4268 « I4S » IFR 133 Inserm, CHRU de Besançon, boulevard Fleming, 25000 Besançon, France
| | - E Boyer
- Service d'orthopédie, de traumatologie, de chirurgie plastique, reconstructrice et assistance main, EA 4268 « I4S » IFR 133 Inserm, CHRU de Besançon, boulevard Fleming, 25000 Besançon, France
| | - S Huard
- Service d'orthopédie, de traumatologie, de chirurgie plastique, reconstructrice et assistance main, EA 4268 « I4S » IFR 133 Inserm, CHRU de Besançon, boulevard Fleming, 25000 Besançon, France
| | - L Obert
- Service d'orthopédie, de traumatologie, de chirurgie plastique, reconstructrice et assistance main, EA 4268 « I4S » IFR 133 Inserm, CHRU de Besançon, boulevard Fleming, 25000 Besançon, France.
| |
Collapse
|
12
|
Atiama-Nurbel T, Quilici S, Boyer E, Deguine JP, Glenac S, Bialecki A. Volatile Constituents of Cucumis sativus: Differences Between Five Tropical Cultivars. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1408-3] [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]
|
13
|
Berta E, Atallah I, Reyt E, Boyer E, Karkas A, Righini CA. The role of tonsillectomy in the initial diagnostic work-up of head and neck squamous cell carcinoma of unknown primary. Eur Ann Otorhinolaryngol Head Neck Dis 2014; 131:305-8. [DOI: 10.1016/j.anorl.2014.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 01/21/2014] [Accepted: 03/04/2014] [Indexed: 10/24/2022]
|
14
|
Roby-Brami A, Van Zandt-Escobar A, Jarrassé N, Robertson J, Schnell N, Boyer E, Rasamimanana N, Hanneton S, Bevilacqua F. Toward the use of augmented auditory feedback for the rehabilitation of arm movements in stroke patients. Ann Phys Rehabil Med 2014. [DOI: 10.1016/j.rehab.2014.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
15
|
Abstract
ABSTRACTNano-sized energetic metals and boron particles (with dimensions less than 100 nanometers) possess desirable combustion characteristics such as high heats of combustion and fast energy release rates. Because of their capability to enhance performance, various metals have been introduced in solid propellant formulations, gel propellants, and solid fuels. There are many advantages of incorporating nano-sized materials into fuels and propellants, such as: 1) shortened ignition delay; 2) shortened burn times, resulting in more complete combustion in volume-limited propulsion systems; 3) enhanced heat-transfer rates from higher specific surface area; 4) greater flexibility in designing new energetic fuel/propellants with desirable physical properties; 5) nano-particles can act as a gelling agent to replace inert or low-energy gellants; 6) nano-sized particles can also be dispersed into high-temperature zone for direct oxidation reaction and rapid energy release, and 7) enhanced propulsive performance with increased density impulse. In view of these advantages, numerous techniques have been developed for synthesizing nano-particles of different sizes and shapes. To reduce any possible hazards associated with the handling of nano-sized particles as well as unwanted particle oxidation, various passivation procedures have been developed. Some of these coating materials could enhance the ignition and combustion behavior, others could increase the compatibility of the particles with the surrounding material. Many researchers have been actively engaged in the characterization of the ignition and combustion behavior of nano-sized particles as well as the assessment of performance enhancement of propellants and fuels containing energetic nano-particles. For example, solid fuels could contain a significant percentage of nano-sized particles to increase the mass-burning rate in hybrid rocket motors, the regression rate of solid propellants can be increased by several times when nano-sized particles are incorporated into the formulation. Specifically, hybrid motor data showed that the addition of 13% energetic aluminum powders can increase the linear regression rate of solid HTPB-based fuel by 123% in comparison to the non-aluminized HTPB fuel at a moderate gaseous oxidizer mass flow rate. Strand burner studies of two identical solid propellant formulations (one with 18% regular aluminum powder and the other with 9% aluminum replaced by Alex® powder) showed that nano-sized particles can increase the linear burning rate of solid propellants by 100%. In addition to solid fuels and propellants, spray combustion of bipropellants has been conducted using gel propellants impregnated with nano-sized boron particles as the fuel in a rocket engine. High combustion efficiencies were obtained from burning nano-sized boron particles contained in a non-toxic liquid-fuel spray. Materials characterization such as chemical analyses to determine the active aluminum content, density measurements, and imaging using an electron microscope have been performed on both neat nano-sized particles and mixtures containing the energetic materials. In general, using energetic nano-sized particles as a new design parameter, propulsion performance of future propellants and fuels can be greatly enhanced.
Collapse
|
16
|
Roux F, Boyer E, Jaulhac B, Dernis E, Closs-Prophette F, Puéchal X. Lyme meningoradiculitis: prospective evaluation of biological diagnosis methods. Eur J Clin Microbiol Infect Dis 2007; 26:685-93. [PMID: 17629757 DOI: 10.1007/s10096-007-0347-8] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The symptoms of Lyme meningoradiculitis and the value of biological examinations in an endemic area were determined in a prospective study in which data were collected on all patients consecutively hospitalised for Lyme meningoradiculitis at our institution during an 18-month period. Specific antibody titres in the serum and cerebrospinal fluid (CSF) were determined by Vidas enzyme-linked-immunosorbent-assay (IgG + IgM), Dade-Behring enzyme immunoassay (EIA) (IgM; IgG) and Western blot analysis (IgG). We also searched for Borrelia burgdorferi in the CSF by PCR analysis and following culture on a specific medium. A control group was recruited, consisting of 16 consecutive patients who had been referred during the same period with suspected but not confirmed Lyme meningoradiculitis. Eleven patients were included. Borrelia EIA of the serum revealed that 40% of the patients had both elevated specific IgM titres and intrathecal synthesis of specific IgG; 40% of the patients was negative for IgM but had isolated intrathecal synthesis of IgG; 20% of the patients had elevated specific IgM titres without intrathecal synthesis of IgG. PCR analysis and the CSF culture were positive in one case only (B. garinii). The results of this study highlight the importance of systematic serological testing for B. burgdorferi in the CSF in the case of early neuroborreliosis suspicion, even in the absence of IgM serum antibodies, which was the case in 40% of the patients in the present study. Nevertheless, intrathecal anti-B. burgdorferi IgG synthesis, which remains the "gold standard" for the diagnosis of neuroborreliosis, was not detectable in 20% of the patients for whom diagnosis was subsequently confirmed by demonstration of specific serum IgM.
Collapse
Affiliation(s)
- F Roux
- Service de Rhumatologie, Centre Hospitalier du Mans, 194 avenue Rubillard, 72000, Le Mans, France
| | | | | | | | | | | |
Collapse
|
17
|
Roblot F, Le Moal G, Godet C, Hutin P, Texereau M, Boyer E, Prazuck T, Lacroix C, Souala MF, Raffi F, Weinbreck P, Besnier JM, Garo B, de Gentile L, Becq-Giraudon B. Pneumocystis carinii pneumonia in patients with hematologic malignancies: a descriptive study. J Infect 2003; 47:19-27. [PMID: 12850158 DOI: 10.1016/s0163-4453(03)00038-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [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: 11/18/2022]
Abstract
Objectives. A retrospective multicentric study was conducted over a five-year period to evaluate the clinical and laboratory characteristics and outcome of patients with proven Pneumocystis carinii pneumonia (PCP) complicating hematologic malignancies.Results. The study included 60 HIV-negative patients with 18 non-Hodgkin's malignant lymphoma (30%), 13 chronic lymphocytic leukaemia (21.7%), 10 acute leukemia (16.6%), 5 multiple myeloma (8.3%), 4 Waldenström's diseases (6.6%), 4 chronic myeloid leukemia (6.6%), 3 myelodysplasia (5%), 2 Hodgkin's diseases (3.3%) and 1 thrombopenia. Bronchoalveolar lavage was diagnostic in all patients. Forty-nine patients received cytotoxic drugs (81.7%), 25 (41.7%) a long-term corticotherapy and 15 (25%) underwent bone marrow transplantation. Twenty-seven patients (45%) required admission in the intensive care unit, 35 (58.3%) received an adjunctive corticotherapy and 18 mechanical ventilation (30%). Twenty patients (33.3%) died of PCP. A previous long-term corticotherapy (p=0.04), high respiratory (p=0.05) and pulse rates (p=0.02), elevated C reactive protein (p=0.01) and mechanical ventilation (OR=13.37; IC: 1.9-50) were associated with a poor prognosis. Adjunctive corticotherapy did not modify the prognosis.Conclusions. These results suggest that PCP can occur during the course of various hematologic malignancies, not only lymphoproliferative disorders. Prognosis remains poor. The diagnosis should be advocated more frequently and earlier to improve the prognosis.
Collapse
Affiliation(s)
- F Roblot
- Infectious Diseases Unit, Department of Internal Medicine, University Hospital, Poitiers, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Boyer E, Bergevin I, Malo D, Gros P, Cellier MFM. Acquisition of Mn(II) in addition to Fe(II) is required for full virulence of Salmonella enterica serovar Typhimurium. Infect Immun 2002; 70:6032-42. [PMID: 12379679 PMCID: PMC130432 DOI: 10.1128/iai.70.11.6032-6042.2002] [Citation(s) in RCA: 190] [Impact Index Per Article: 8.6] [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] [Received: 10/29/2001] [Revised: 12/18/2001] [Accepted: 07/05/2002] [Indexed: 01/01/2023] Open
Abstract
The roles of the genes feoB (ABC ferrous iron transporter), mntH (proton-dependent manganese transporter), and sitABCD (putative ABC iron and/or manganese transporter) in Salmonella pathogenicity were investigated by using mutant strains deficient in one, two, or three transporters. Our results indicated that sitABCD encodes an important transporter of Mn(II) and Fe(II) which is required for full virulence in susceptible animals (Nramp1(-/-)) and for replication inside Nramp1(-/-) macrophages in vitro. The mntH sitABCD double mutant (mutant MS) showed minimal Mn(II) uptake and increased sensitivity to H(2)O(2) and to the divalent metal chelator 2,2'-dipyridyl (DP) and was defective for replication in macrophages. In vivo MS appeared to be as virulent as the sitABCD mutant in Nramp1(-/-) animals. The ferrous iron transporter Feo was required for full virulence in 129/Sv Nramp1(-/-) mice, and infection with multiple mutants lacking FeoB was not fatal. The sitABCD feoB mutant (mutant SF) and the mntH sitABCD feoB mutant (mutant MSF) showed minimal Fe(II) uptake and were slightly impaired for replication in susceptible macrophages. MSF showed reduced growth in minimal medium deficient in divalent cations. The role of the mntH gene, which is homologous to mammalian Nramp genes, was also investigated after overexpression in the double mutant MS. MntH preferred Mn(II) over Fe(II) and could suppress MS sensitivity to H(2)O(2) and to DP, and it also improved the intracellular survival in Nramp1(-/-) macrophages. This study indicates that acquisition of Mn(II), in addition to Fe(II), is required for intracellular survival and replication of Salmonella enterica serovar Typhimurium in macrophages in vitro and for virulence in vivo.
Collapse
Affiliation(s)
- E Boyer
- Department of Human Health, INRS-Institut Armand-Frappier, Laval H7V 1B7, Quebec, Canada
| | | | | | | | | |
Collapse
|
19
|
Martin PK, Bao Y, Boyer E, Winterberg KM, McDowell L, Schmid MB, Buysse JM. Novel locus required for expression of high-level macrolide-lincosamide-streptogramin B resistance in Staphylococcus aureus. J Bacteriol 2002; 184:5810-3. [PMID: 12270841 PMCID: PMC139611 DOI: 10.1128/jb.184.20.5810-5813.2002] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [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: 11/20/2022] Open
Abstract
The yycF1(Ts) mutation in Staphylococcus aureus conferred hypersensitivity to macrolide-lincosamide-streptogramin B (MLS(B)) antibiotics on strains either containing or lacking ermB. The overexpression of the S. aureus Ssa protein restored the yycF1 mutant to wild-type levels of susceptibility. Inactivation of ssa in an unmutagenized strain dramatically reduced ermB-based resistance. Conditional loss of function or expression of ssa in the yycF1 mutant is proposed to result in the observed hypersensitivity to MLS(B) antibiotics.
Collapse
Affiliation(s)
- P K Martin
- Essential Therapeutics, Inc., Mountain View, California 94043, USA.
| | | | | | | | | | | | | |
Collapse
|
20
|
Abstract
The redox-active metals iron and manganese are required for energy metabolism, protection against oxidative stress and defense against infections. In eukaryotes, both divalent metals are transported by Nramp transporters. The sequence of these transporters was remarkably conserved during evolution. Several bacterial Nramp homologs (MntH) are also proton-dependent manganese transporters. Here, we present phylogenetic evidence for the polyphyletic origins of three groups of MntH proteins and for possible Nramp horizontal gene transfer with eukaryotes. We propose that the evolution of the MntH/Nramp family is related to adaptation to oxidative environments, including those arising during infection of animals and plants.
Collapse
Affiliation(s)
- M F Cellier
- INRS-Institut Armand-Frappier, 531 Bd des prairies, PQ, H7V 1B7, Laval, Canada.
| | | | | | | |
Collapse
|
21
|
Lomovskaya O, Lee A, Hoshino K, Ishida H, Mistry A, Warren MS, Boyer E, Chamberland S, Lee VJ. Use of a genetic approach to evaluate the consequences of inhibition of efflux pumps in Pseudomonas aeruginosa. Antimicrob Agents Chemother 1999; 43:1340-6. [PMID: 10348749 PMCID: PMC89275 DOI: 10.1128/aac.43.6.1340] [Citation(s) in RCA: 165] [Impact Index Per Article: 6.6] [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: 11/20/2022] Open
Abstract
Drug efflux pumps in Pseudomonas aeruginosa were evaluated as potential targets for antibacterial therapy. The potential effects of pump inhibition on susceptibility to fluoroquinolone antibiotics were studied with isogenic strains that overexpress or lack individual efflux pumps and that have various combinations of efflux- and target-mediated mutations. Deletions in three efflux pump operons were constructed. As expected, deletion of the MexAB-OprM efflux pump decreased resistance to fluoroquinolones in the wild-type P. aeruginosa (16-fold reduction for levofloxacin [LVX]) or in the strain that overexpressed mexAB-oprM operon (64-fold reduction for LVX). In addition to that, resistance to LVX was significantly reduced even for the strains carrying target mutations (64-fold for strains for which LVX MICs were >4 microg/ml). We also studied the frequencies of emergence of LVX-resistant variants from different deletion mutants and the wild-type strain. Deletion of individual pumps or pairs of the pumps did not significantly affect the frequency of emergence of resistant variants (at 4x the MIC for the wild-type strain) compared to that for the wild type (10(-6) to 10(-7)). In the case of the strain with a triple deletion, the frequency of spontaneous mutants was undetectable (<10(-11)). In summary, inhibition of drug efflux pumps would (i) significantly decrease the level of intrinsic resistance, (ii) reverse acquired resistance, and (iii) result in a decreased frequency of emergence of P. aeruginosa strains highly resistant to fluoroquinolones in clinical settings.
Collapse
Affiliation(s)
- O Lomovskaya
- Microcide Pharmaceuticals Inc., Mountain View, California 94043, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Lemerle E, Bastien M, Demolliens-Dreux G, Forest JL, Boyer E, Chabasse D, Célérier P. [Cutaneous Scedosporium infection revealed by bullous-necrotic purpura]. Ann Dermatol Venereol 1998; 125:711-4. [PMID: 9835962] [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: 02/09/2023]
Abstract
BACKGROUND Non-mycetomatous cutaneous scedosprium is an uncommon mycosis observed in immunodepressed subjects. We report a case with an inaugural presentation of bullous and necrotic purpura. CASE REPORT A 79-year-old man on intermittent corticosteroid therapy for bronchospasm was admitted for bullous and necrotic purpura and fever. Subcutaneous nodules with a sporotrichoid aspect developed despite wide-spectrum antibiotics. Microbiology samples cultured on Sabouraud medium evidenced Scedosporium apiospermum. The pathogenic nature of the infection was proven on a skin biopsy showing numerous myceleal filaments with Gomori-Grocott staining despite negative PAS. No pulmonary involvement was evidenced. The patient was treated unsuccessfully with itraconazole. A Pseudomonas lung infection was fatal. DISCUSSION Scedosporium apiospermum, an ubiquitous ascomycetes anamorphous to Pseudallescheria boydii, is the cause of a growing number of human infections due to widespread use of immunosuppressors. Skin and lung localizations predominate. The inaugural bullous and necrotic purpural skin manifestations in this case are unusual. In addition, the patient was only minimally immunodepressed and despite demonstrated in vitro sensitivity, itraconazole was ineffective clinically. Treatment is not well defined, but surgery is essential in combination with empirically chosen antifungals.
Collapse
Affiliation(s)
- E Lemerle
- Service de Dermatologie-Vénéréologie, C.H. Le Mans
| | | | | | | | | | | | | |
Collapse
|
23
|
|
24
|
Eastman PS, Mittler J, Kelso R, Gee C, Boyer E, Kolberg J, Urdea M, Leonard JM, Norbeck DW, Mo H, Markowitz M. Genotypic changes in human immunodeficiency virus type 1 associated with loss of suppression of plasma viral RNA levels in subjects treated with ritonavir (Norvir) monotherapy. J Virol 1998; 72:5154-64. [PMID: 9573287 PMCID: PMC110088 DOI: 10.1128/jvi.72.6.5154-5164.1998] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.5] [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: 02/07/2023] Open
Abstract
Ten subjects received 600 to 1,200 mg of the human immunodeficiency virus type 1 (HIV-1) protease inhibitor ritonavir per day. Following 2 weeks of therapy, plasma HIV RNA levels decreased by a mean of 1. 57 (range, 0.89 to 1.96) log units. With continued therapy, HIV RNA levels began to rise in eight subjects. The initial rise in plasma RNA levels was temporally associated with the development and quantitative increase in the V82 resistance mutation. Doubling times of the V82A mutant virus were estimated to be 2.4 to 4.8 days. An L63P/A mutation was commonly present at baseline even in subjects with a durable virologic response. The concomitant acquisition of an L63P/A mutation with the V82A/F mutation at the time when plasma RNA levels rebounded suggests a role for the L63P/A mutation in improving the fitness of the V82A/F mutation. Subsequent additional genotypic changes at codons 54 and 84 were often associated with further increases in plasma RNA levels. Ongoing viral replication in the presence of drugs resulted in the appearance of additional genotypic changes, including the L90M saquinavir resistance mutation, and decreased phenotypic susceptibility. The relative fitness of the protease V82A ritonavir resistance mutation and reverse transcriptase T215Y/F zidovudine resistance mutation following drug withdrawal were estimated to be 96 to 98% that of the wild type. Durability of the virologic response was associated with plasma RNA levels at the nadir. A virologic response beyond 60 days was not observed unless plasma HIV RNA levels were suppressed below 2,000 copies/ml, consistent with estimates from V82A doubling times for selection of a single resistance mutation to dominate the replicating population.
Collapse
Affiliation(s)
- P S Eastman
- Chiron Corporation, Emeryville, California 94608, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Eastman PS, Boyer E, Mole L, Kolberg J, Urdea M, Holodniy M. Nonisotopic hybridization assay for determination of relative amounts of genotypic human immunodeficiency virus type 1 zidovudine resistance. J Clin Microbiol 1995; 33:2777-80. [PMID: 8567926 PMCID: PMC228576 DOI: 10.1128/jcm.33.10.2777-2780.1995] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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: 01/31/2023] Open
Abstract
A nonisotopic hybridization assay for human immunodeficiency virus genotypic zidovudine resistance determination is described. Biotinylated PCR product was hybridized with enzyme-labeled probes for wild-type or resistant mutant sequences and detected colorimetrically or chemiluminescently in a microplate format. Changes in mutant-to-wild-type ratios allow for the monitoring of longitudinal patient samples.
Collapse
Affiliation(s)
- P S Eastman
- Chiron Corporation, Emeryville, California 94608, USA
| | | | | | | | | | | |
Collapse
|
26
|
Holodniy M, Mole L, Margolis D, Moss J, Dong H, Boyer E, Urdea M, Kolberg J, Eastman S. Determination of human immunodeficiency virus RNA in plasma and cellular viral DNA genotypic zidovudine resistance and viral load during zidovudine-didanosine combination therapy. J Virol 1995; 69:3510-6. [PMID: 7745698 PMCID: PMC189064 DOI: 10.1128/jvi.69.6.3510-3516.1995] [Citation(s) in RCA: 33] [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] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Eleven human immunodeficiency virus (HIV)-infected subjects on long-term zidovudine (ZDV) therapy had didanosine (ddI) added to their antiretroviral regimen. HIV RNA in plasma was quantitated by branched-DNA signal amplification assay. Peripheral blood mononuclear cell (PBMC) HIV viral DNA was quantitated by PCR. The relative amounts of wild-type (WT) sequence, ddI resistance-associated codon changes (reverse transcriptase [RT] gene codon 65 K-->R [RT K65R], RT 174V, RT I135K/T/V, and RT M184I/V), and ZDV resistance-associated codon change (RT T215Y/F) from HIV RNA in plasma and RT T215Y/F from PBMC viral DNA were determined by differential hybridization of PCR products from 10 of 11 subjects. All subjects had evidence of RT T215Y/F mutation in both RNA in plasma and PBMC DNA at baseline. Subjects with a mixture of WT and RT T215Y/F HIV RNA in plasma at baseline demonstrated a decline in RNA levels in plasma after the addition of ddI. However, after 6 months of ZDV-ddI therapy, WT HIV RNA in plasma was undetectable in all subjects who had demonstrated a mixture at baseline. Subjects with only RT T215Y/F RNA present in plasma at baseline remained so and demonstrated no decline in RNA levels in plasma. In all subjects, no significant changes in PBMC DNA viral load and RT T215Y/F or WT levels were seen. HIV RNA in plasma demonstrated a significantly higher RT T215Y/F mutant/WT ratio than that of PBMC viral DNA, both at baseline and after ZDV-ddI combination therapy in all subjects. No subjects developed mutations associated with ddI resistance at codons 65, 74, 135, and 184 during this study. This study suggests that determination of relative amounts of RT T215Y/F and WT species from HIV RNA in plasma at baseline may be predictive of virologic response during ZDV-ddI combination therapy.
Collapse
Affiliation(s)
- M Holodniy
- AIDS Research Center, Department of Veterans Affairs Medical Center, Palo Alto, California, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Chermette R, Bussiéras J, Marionneau J, Boyer E, Roubin C, Prophette B, Maillard H, Fabiani B. [Invasive cysticercosis due to Taenia crassiceps in an AIDS patient]. Bull Acad Natl Med 1995; 179:777-80; discussion 780-3. [PMID: 7648312] [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: 01/26/2023]
Abstract
A first case is reported from France of a subcutaneous and muscular tissues invasion by proliferative larval forms of Taenia crassiceps in an AIDS-patient with severe immunodeficiency. These larvae usually develop in rodents whereas the adult form of the cestode is commonly found in foxes. Authors emphasize the differential diagnosis from other human subcutaneous metacestodoses such as T. solium cysticercosis, cenurosis and hydatidosis. The proliferative aspect of the larvae, the recurrence of lesions after surgical removal and the possible invasion of other tissues are elements of a poor prognosis.
Collapse
Affiliation(s)
- R Chermette
- Service de Parasitologie, Ecole Nationale Vétérinaire d'Alfort, Maison Alfort, France
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Combelles R, Boyer E, Canellias A. [Anatomical sections at low temperature]. Bull Assoc Anat (Nancy) 1981; 65:57-66. [PMID: 7326462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The authors present anatomical sections realized with a "scanigraph": an unedited self acting apparatus specially conceived for the exploration of anatomical specimens. It is possible to take photographs of successive parallel plans, scanned at 18, 9 or 6 pictures by millimeter. With the help of a computer, anatomical sections could be reconstituted in orthogonal projection and axial incidence. The results obtained reveal a new process in anatomical investigation.
Collapse
|
29
|
Antlitz AM, Boyer E. Certificate of need: a physician concern. Md State Med J 1979; 28:45-7. [PMID: 491769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|