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Lokteff F, Canet R, Drissi S, Moretto P. Impacts au Rugby à XV : suivi longitudinal et distribution par postes en club Elite. Sci Sports 2022. [DOI: 10.1016/j.scispo.2021.08.005] [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: 10/19/2022]
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Sghaier N, Fumery G, Fourcassie V, Moretto P. 3D distribution of the forces applied on a load transported by a dyad. Comput Methods Biomech Biomed Engin 2020. [DOI: 10.1080/10255842.2020.1816293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- N. Sghaier
- Centre de Biologie Intégrative (CBI), Centre de Recherche sur la Cognition Animale (CRCA UMR CNRS-UPS 5169), Equipe: Collective Animal Behaviour (CAB), Université Paul Sabatier, Toulouse, France
| | - G. Fumery
- Centre de Biologie Intégrative (CBI), Centre de Recherche sur la Cognition Animale (CRCA UMR CNRS-UPS 5169), Equipe: Collective Animal Behaviour (CAB), Université Paul Sabatier, Toulouse, France
| | - V. Fourcassie
- Centre de Biologie Intégrative (CBI), Centre de Recherche sur la Cognition Animale (CRCA UMR CNRS-UPS 5169), Equipe: Collective Animal Behaviour (CAB), Université Paul Sabatier, Toulouse, France
| | - P. Moretto
- Centre de Biologie Intégrative (CBI), Centre de Recherche sur la Cognition Animale (CRCA UMR CNRS-UPS 5169), Equipe: Collective Animal Behaviour (CAB), Université Paul Sabatier, Toulouse, France
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Azzi L, Moretto P, Vinci R, Croveri F, Boggio A, Silvestre-Rangil J, Tettamanti L, Tagliabue A, Passi A. Human β2-defensin in oral lichen planus expresses the degree of inflammation. J BIOL REG HOMEOS AG 2017; 31:77-87. [PMID: 28691457] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Syndrome (BMS). Seventeen OLP patients, with a positive histopathologic diagnosis of the disease, were recruited into this study in order to measure the relative quantity of HBD-2 in their saliva and crevicular fluid. The values were compared with those collected from a group of 9 patients affected by the Burning Mouth Syndrome (BMS) and with a control group (CTRL) of 9 patients. There was no statistically significant difference between the groups (p=0.523; p=0.897). However, patients affected by OLP showed a dycotomic distribution of values: while 10 of them showed similar values to those found out in the other two groups, 7 patients expressed high levels of HBD-2 and 3500 pg/ml was the threshold to distinguish the subgroups. During the dental visit the clinician classified OLP patients into two groups according to the clinical presentation of the disease: reticular and hyperplastic (white OLP), atrophic and erosive forms (red OLP). There was a statistical significant correlation between the clinical and numeric classification of the patients (p=0.004; p=0.001), and the expression of HBD-2 was higher in the red OLP group than in the white OLP group (p=0.000; p=0.000). In conclusion, this study shows that HBD-2 represents an index to assess active inflammation and it is probably linked to the presence of the typical band-like CD8+ infiltrate in Oral Lichen Planus.
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Affiliation(s)
- L Azzi
- Department of Medicine and Surgery, University of Insubria, ASST dei Sette Laghi, Dental Clinic, Unit of Oral Pathology, Varese, Italy
| | - P Moretto
- Department of Medicine and Surgery, University of Insubria, School of Medicine, Unit of Biochemistry, Varese, Italy
| | - R Vinci
- Oral Surgery, Università Vita-Salute San Raffaele, Milan Italy
| | - F Croveri
- Department of Medicine and Surgery, University of Insubria, ASST dei Sette Laghi, Dental Clinic, Unit of Oral Pathology, Varese, Italy
| | - A Boggio
- Department of Medicine and Surgery, University of Insubria, ASST dei Sette Laghi, Dental Clinic, Unit of Oral Pathology, Varese, Italy
| | - J Silvestre-Rangil
- Stomatology and Oral Surgery, Dr Peset University Hospital, Department of Stomatology, University of Valencia, Spain
| | - L Tettamanti
- Department of Medicine and Surgery, University of Insubria, ASST dei Sette Laghi, Dental Clinic, Unit of Oral Pathology, Varese, Italy
| | - A Tagliabue
- Department of Medicine and Surgery, University of Insubria, ASST dei Sette Laghi, Dental Clinic, Unit of Oral Pathology, Varese, Italy
| | - A Passi
- Department of Medicine and Surgery, University of Insubria, School of Medicine, Unit of Biochemistry, Varese, Italy
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Watier B, Villeger D, Costes A, Moretto P. A preliminary study suggests that walk-to-run transition is consistent with mechanical optimization. Comput Methods Biomech Biomed Engin 2015; 18 Suppl 1:2080-1. [DOI: 10.1080/10255842.2015.1069633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - D. Villeger
- University of Toulouse, Toulouse, PRISSMH, France
| | - A. Costes
- University of Toulouse, Toulouse, PRISSMH, France
| | - P. Moretto
- CNRS, Centre de Recherches sur la Cognition Animale, Toulouse, France
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Claverie L, Ille A, Moretto P. Validation of a method for dispatching discrete sensors on an insole for plantar pressure analysis. Comput Methods Biomech Biomed Engin 2015; 18:1908-1909. [DOI: 10.1080/10255842.2015.1069563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- L. Claverie
- PRISSMH (UPS), Université de Toulouse, Toulouse Cedex 9, France
| | - A. Ille
- PRISSMH (UPS), Université de Toulouse, Toulouse Cedex 9, France
| | - P. Moretto
- CRCA (UPS-CNRS), Université de Toulouse, Toulouse Cedex 9, France
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Bar J, Gorn-Hondermann I, Moretto P, Niknejad N, Stewart D, Goss G, Dimitroulakos J. Mir Profiling Identifies Cdk6 Down-Regulation As a Potential Mechanism of Acquired Cisplatin Resistance in Non-Small Cell Lung Carcinoma. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu325.4] [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: 11/12/2022] Open
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Ihaddadene R, Yokom DW, Le Gal G, Moretto P, Canil CM, Delluc A, Reaume N, Carrier M. The risk of venous thromboembolism in renal cell carcinoma patients with residual tumor thrombus. J Thromb Haemost 2014; 12:855-9. [PMID: 24702743 DOI: 10.1111/jth.12580] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND The clinical importance of tumor thrombus in patients with renal cell carcinoma is unknown. We sought to determine the long-term risk of venous thromboembolism (VTE) in patients with residual tumor thrombus postextraction, and to evaluate the impact of residual tumor thrombus on overall survival. PATIENTS/METHODS A cohort study of patients with stage III-IV renal cell carcinoma undergoing nephrectomy was undertaken. The primary endpoint was the risk of VTE during a 2-year follow-up period. The secondary endpoint was 2-year overall survival. RESULTS A total of 170 surgical renal cell carcinoma patients were included, 97 (57.1%) of whom had tumor thrombus. Patients with residual tumor thrombus following surgery had a higher risk of developing VTE than those with complete tumor thrombus resection (hazard ratio [HR] 8.7, 95% confidence interval [CI] 1.7-43.4) and no tumor thrombus (HR 6.5, 95% CI 1.7-24.7). Patient with residual tumor thrombus did not have worse overall survival than those with tumor thrombus completely resected or those without tumor thrombus. CONCLUSIONS The presence of residual tumor thrombus is an important risk factor for VTE among renal cell carcinoma patients.
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Affiliation(s)
- R Ihaddadene
- Department of Medicine, The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
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Yokom DW, Ihaddadene R, Moretto P, Canil CM, Reaume N, Le Gal G, Carrier M. Increased risk of preoperative venous thromboembolism in patients with renal cell carcinoma and tumor thrombus. J Thromb Haemost 2014; 12:169-71. [PMID: 24283651 PMCID: PMC4238732 DOI: 10.1111/jth.12459] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 11/11/2013] [Indexed: 12/03/2022]
Abstract
BACKGROUND The clinical impact of a tumor thrombus in renal cell carcinoma (RCC) patients awaiting radical nephrectomy and thrombectomy is unknown. OBJECTIVE To determine the incidence of venous thromboembolism (VTE) in RCC patients with tumor thrombus prior to nephrectomy. PATIENTS AND METHODS We conducted a retrospective cohort study including all late-stage (stage 3-4 excluding T1-2 N0M0) RCC patients who underwent radical nephrectomy at our institution between 1 January 2005 and 1 July 2012. Tumor thrombus was defined as the presence of an intraluminal filling defect in the renal vein, hepatic vein, portal vein, or inferior vena cava, directly extending from a renal mass detected on computed tomography. RESULTS A total of 176 patients were included in the study. Fifty-three (30.1%) patients had tumor thrombus diagnosed on imaging Three patients with tumor thrombus (5.7%; 95% confidence interval [CI] 1.4-16.8) developed a VTE while awaiting radical nephrectomy, whereas none (0%; 95% CI 0-2.9) of the patients without a tumor thrombus had an event (P = 0.026). All three events were deep vein thrombosis. Times from tumor thrombus diagnosis to VTE were 5, 15 and 21 days. CONCLUSIONS Tumor thrombus on imaging is a frequent finding among RCC patients awaiting nephrectomy. The presence of tumor thrombus in these patients increases the incidence of preoperative VTE.
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Affiliation(s)
- D W Yokom
- Department of Medicine, University of Ottawa, Ottawa, ON, Canada
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Kuchuk I, Hutton B, Moretto P, Ng T, Addison CL, Clemons M. Incidence, consequences and treatment of bone metastases in breast cancer patients-Experience from a single cancer centre. J Bone Oncol 2013; 2:137-44. [PMID: 26909284 PMCID: PMC4723382 DOI: 10.1016/j.jbo.2013.09.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [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: 06/27/2013] [Revised: 09/06/2013] [Accepted: 09/15/2013] [Indexed: 11/17/2022] Open
Abstract
Background There is a paucity of literature about the benefits of bone-targeted agents for breast cancer patients with bone metastases treated in the non-trial setting. We explored the incidence, consequences, and treatment of bone metastases at a single cancer centre. Methods Electronic records of metastatic breast cancer patients were reviewed and pertinent information was extracted. Results Of 264 metastatic breast cancer patients, 195 (73%) developed bone metastases. Of these patients, 176 were eligible for analysis. Median age at bone metastases diagnosis was 56.9 years (IQR 48–67) and initial presentation of bone metastases included asymptomatic radiological findings (58%), bone pain (40%), or a SRE (12.5%). Most patients (88%) received a bone-targeted agent, starting a median of 1.5 months (IQR 0.8–3.30) after bone metastasis diagnosis. 62% of patients had ≥1 SRE. The median time from bone metastasis diagnosis to first SRE was 1.8 months (IQR 0.20–8.43 months). Median number of SREs per patient was 1.5 (IQR 0–3). Overall, 26.8% of all SREs were clinically asymptomatic. Within the entire cohort, 51% required opioids and 20% were hospitalized due to either an SRE or bone pain. Conclusions Despite extensive use of bone-targeted agents, the incidence of SREs remains high. Nearly half of SREs occur prior to starting a bone-targeted agent. Use of opioids and hospitalizations secondary to bone metastases remain common. More effective treatment options are clearly needed.
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Affiliation(s)
- I Kuchuk
- Division of Medical Oncology, The Ottawa Hospital Cancer Centre & Department of Medicine, University of Ottawa, Ottawa, Canada
| | - B Hutton
- Ottawa Hospital Research Institute, Ottawa University, Department of Epidemiology and Community Medicine, Ottawa, Canada
| | - P Moretto
- Division of Medical Oncology, The Ottawa Hospital Cancer Centre & Department of Medicine, University of Ottawa, Ottawa, Canada
| | - T Ng
- Division of Internal Medicine, Department of Medicine, University of Ottawa, Ottawa, Canada
| | - C L Addison
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - M Clemons
- Division of Medical Oncology, The Ottawa Hospital Cancer Centre & Department of Medicine, University of Ottawa, Ottawa, Canada; Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada
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Moretto P, Nair V, Hallani SE, Malone S, Belanger E, Morash C, Canil C. Management of penoscrotal extramammary Paget disease: case series and review of the literature. Curr Oncol 2013; 20:e311-20. [PMID: 23904770 PMCID: PMC3728060 DOI: 10.3747/co.20.1353] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Extramammary Paget disease (empd) is a rare, slow-growing neoplasm, considered to be an adenocarcinoma of the apocrine glands. In men, the penoscrotal region is the most commonly affected area. The disease can present as carcinoma in situ or as invasive disease that can subsequently metastasize to lymph nodes and distant sites. Because of the rarity of empd, the medical literature available to guide management of the disease is limited, particularly in patients with metastases. In addition, metastatic disease may pose a diagnostic challenge, because invasive cancer of the genitourinary or gastrointestinal tract can occur in association with empd. In the present case series, we describe our experience in treating penoscrotal empd with multimodality therapy, and we review the existing literature concerning its diagnosis and management.
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Affiliation(s)
- P. Moretto
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON
| | - V.J. Nair
- Division of Radiation Oncology, Department of Radiology, The Ottawa Hospital Cancer Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON
| | - S. El Hallani
- Division of Anatomical Pathology, Department of Pathology and Laboratory Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON
| | - S. Malone
- Division of Radiation Oncology, Department of Radiology, The Ottawa Hospital Cancer Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON
| | - E. Belanger
- Division of Anatomical Pathology, Department of Pathology and Laboratory Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON
| | - C. Morash
- Division of Urology, The Ottawa Hospital Cancer Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON
| | - C.M. Canil
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON
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Villeger D, Delattre N, Watier B, Moretto P. Froude and Strouhal dimensionless numbers to study human gait: an experimental approach. Comput Methods Biomech Biomed Engin 2012; 15 Suppl 1:189-90. [PMID: 23009474 DOI: 10.1080/10255842.2012.713726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D Villeger
- Université de Toulouse, UPS, EA 4561 PRISSMH, 118 route de Narbonne, F-31062, Toulouse Cedex 9, France
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Marchisone J, Teyssedre F, Moretto P, Codina G, De Teyssiere T, Gasq D, De Boissezon X, Labrunee M. Place d’un programme d’éducation thérapeutique dans la prévention des chutes après pathologie neurologique. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.322] [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: 11/15/2022]
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Marchisone J, Teyssedre F, Moretto P, Codina G, De Teyssiere T, Gasq D, De Boissezon X, Labrunee M. Role of a therapeutic education program in preventing falls after neurological disease. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.325] [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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Baqué M, Le Postollec A, Ravelet C, Peyrin E, Coussot G, Desvignes I, Incerti S, Moretto P, Dobrijevic M, Vandenabeele-Trambouze O. Investigation of low-energy proton effects on aptamer performance for astrobiological applications. Astrobiology 2011; 11:207-211. [PMID: 21434764 DOI: 10.1089/ast.2010.0520] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Biochips are promising instruments for the search for organic molecules in planetary environments. Nucleic acid aptamers are powerful affinity receptors known for their high affinity and specificity, and therefore are of great interest for space biochip development. A wide variety of aptamers have already been selected toward targets of astrobiological interest (from amino acids to microorganisms). We present a first study to test the resistance of these receptors to the constraints of the space environment. The emphasis is on the effect of cosmic rays on the molecular recognition properties of DNA aptamers. Experiments on beam-line facilities have been conducted with 2 MeV protons and fluences much higher than expected for a typical mission to Mars. Our results show that this irradiation process did not affect the performances of DNA aptamers as molecular recognition tools.
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Affiliation(s)
- M Baqué
- Institut des Biomolécules Max Mousseron-IBMM, Centre National de la Recherche Scientifique, Université de Montpellier, Unité Mixte de Recherche, France
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Incerti S, Ivanchenko A, Karamitros M, Mantero A, Moretto P, Tran HN, Mascialino B, Champion C, Ivanchenko VN, Bernal MA, Francis Z, Villagrasa C, Baldacchin G, Guèye P, Capra R, Nieminen P, Zacharatou C. Comparison of GEANT4 very low energy cross section models with experimental data in water. Med Phys 2010; 37:4692-708. [PMID: 20964188 DOI: 10.1118/1.3476457] [Citation(s) in RCA: 270] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The GEANT4 general-purpose Monte Carlo simulation toolkit is able to simulate physical interaction processes of electrons, hydrogen and helium atoms with charge states (H0, H+) and (He0, He+, He2+), respectively, in liquid water, the main component of biological systems, down to the electron volt regime and the submicrometer scale, providing GEANT4 users with the so-called "GEANT4-DNA" physics models suitable for microdosimetry simulation applications. The corresponding software has been recently re-engineered in order to provide GEANT4 users with a coherent and unique approach to the simulation of electromagnetic interactions within the GEANT4 toolkit framework (since GEANT4 version 9.3 beta). This work presents a quantitative comparison of these physics models with a collection of experimental data in water collected from the literature. METHODS An evaluation of the closeness between the total and differential cross section models available in the GEANT4 toolkit for microdosimetry and experimental reference data is performed using a dedicated statistical toolkit that includes the Kolmogorov-Smirnov statistical test. The authors used experimental data acquired in water vapor as direct measurements in the liquid phase are not yet available in the literature. Comparisons with several recommendations are also presented. RESULTS The authors have assessed the compatibility of experimental data with GEANT4 microdosimetry models by means of quantitative methods. The results show that microdosimetric measurements in liquid water are necessary to assess quantitatively the validity of the software implementation for the liquid water phase. Nevertheless, a comparison with existing experimental data in water vapor provides a qualitative appreciation of the plausibility of the simulation models. The existing reference data themselves should undergo a critical interpretation and selection, as some of the series exhibit significant deviations from each other. CONCLUSIONS The GEANT4-DNA physics models available in the GEANT4 toolkit have been compared in this article to available experimental data in the water vapor phase as well as to several published recommendations on the mass stopping power. These models represent a first step in the extension of the GEANT4 Monte Carlo toolkit to the simulation of biological effects of ionizing radiation.
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Affiliation(s)
- S Incerti
- Université Bordeaux 1, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, 33175 Gradignan, France.
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Le Postollec A, Coussot G, Baqué M, Incerti S, Desvignes I, Moretto P, Dobrijevic M, Vandenabeele-Trambouze O. Investigation of neutron radiation effects on polyclonal antibodies (IgG) and fluorescein dye for astrobiological applications. Astrobiology 2009; 9:637-645. [PMID: 19778275 DOI: 10.1089/ast.2008.0303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Detecting life in the Solar System is one of the great challenges of new upcoming space missions. Biochips have been proposed as a way to detect organic matter on extraterrestrial objects. A biochip is a miniaturized device composed of biologically sensitive systems, such as antibodies, which are immobilized on a slide. In the case of in situ measurements, the main concern is to ensure the survival of the antibodies under space radiation. Our recent computing simulation of cosmic ray interactions with the martian environment shows that neutrons are one of the dominant species at soil level. Therefore, we have chosen, in a first approach, to study antibody resistance to neutrons by performing irradiation experiments at the Applications Interdisciplinaires des Faisceaux d'Ions en Région Aquitaine (AIFIRA) platform, a French ion beam facility at the Centre d'Etudes Nucléaires de Bordeaux-Gradignan in Bordeaux. Antibodies and fluorescent dyes, freeze-dried and in buffer solution, were irradiated with 0.6 MeV and 6 MeV neutrons. Sample analyses demonstrated that, in the conditions tested, antibody recognition capability and fluorescence dye intensity are not affected by the neutrons.
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Affiliation(s)
- A Le Postollec
- Université de Bordeaux, Laboratoire d'Astrophysique de Bordeaux (LAB), Bordeaux, France.
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Descatoire A, Femery V, Potdevin F, Moretto P. Step-to-step reproducibility and asymmetry to study gait auto-optimization in healthy and cerebral palsied subjects. Ann Phys Rehabil Med 2009; 52:319-29. [PMID: 19874738 DOI: 10.1016/j.rehab.2009.02.004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Accepted: 02/27/2009] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The purpose of our study was to compare plantar pressure asymmetry and step-to-step reproducibility in both able-bodied persons and two groups of hemiplegics. The relevance of the research was to determine the efficiency of asymmetry and reproducibility as indexes for diagnosis and rehabilitation processes. MATERIAL AND METHOD This study comprised 31 healthy young subjects and 20 young subjects suffering from cerebral palsy hemiplegia assigned to two groups of 10 subjects according to the severity of their musculoskeletal disorders. The peaks of plantar pressure and the time to peak pressure were recorded with an in-shoe measurement system. The intra-individual coefficient of variability was calculated to indicate the consistency of plantar pressure during walking and to define gait stability. The effect size was computed to quantify the asymmetry and measurements were conducted at eight footprint locations. RESULTS Results indicated few differences in step-to-step reproducibility between the healthy group and the less spastic group while the most affected group showed a more asymmetrical and unstable gait. CONCLUSION From the concept of self-optimisation and depending on the neuromotor disorders the organism could make priorities based on pain, mobility, stability or energy expenditure to develop the best gait auto-optimisation.
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Affiliation(s)
- A Descatoire
- Laboratoire d'études de la motricité humaine, faculté des sciences du sport et de l'éducation physique, université de Lille-2, 9, rue de l'Université, 59790 Ronchin, France
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Le Postollec A, Incerti S, Dobrijevic M, Desorgher L, Santin G, Moretto P, Vandenabeele-Trambouze O, Coussot G, Dartnell L, Nieminen P. Monte Carlo simulation of the radiation environment encountered by a biochip during a space mission to Mars. Astrobiology 2009; 9:311-323. [PMID: 19368517 DOI: 10.1089/ast.2008.0255] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Simulations with a Monte Carlo tool kit have been performed to determine the radiation environment a specific device, called a biochip, would face if it were placed into a rover bound to explore Mars' surface. A biochip is a miniaturized device that can be used to detect organic molecules in situ. Its specific detection part is constituted of proteins whose behavior under cosmic radiation is completely unknown and must be investigated to ensure a good functioning of the device under space conditions. The aim of this study is to define particle species and energy ranges that could be relevant to investigate during experiments on irradiation beam facilities. Several primary particles have been considered for galactic cosmic ray (GCR) and solar energetic particle (SEP) contributions. Ionizing doses accumulated in the biochip and differential fluxes of protons, alphas, neutrons, gammas, and electrons have been established for both the Earth-Mars transit and the journey at Mars' surface. Neutrons and gammas appear as dominant species on martian soil, whereas protons dominate during the interplanetary travel. Depending on solar event occurrence during the mission, an ionizing dose of around a few Grays (1 Gy = 100 rad) is expected.
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Affiliation(s)
- A Le Postollec
- Laboratoire d'Astrophysique de Bordeaux (LAB), Université Bordeaux 1, Floirac, France.
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Abstract
The purpose of this study was to assess plantar pressure deviations due to fatigue. Plantar pressure was assessed using a portable system while eleven healthy subjects performed three walking tests, one before, one immediately after and another 30-min after intensive running. Pressure peak, intra-subject coefficient of variation and relative impulse were recorded. Significant decrease in pressure peak and the relative impulse under the heel and the midfoot along with significant increase in pressure peak and relative impulse under the forefoot were observed 30 min after the run. After a 30-min rest, the heel and forefoot loading remained significantly affected compared to the pre-test conditions while variability, step length and frequency remained unchanged. The study demonstrates short- and long-term plantar pressure deviations due to fatigue induced by an intensive 30-min run, while previous studies showed negligible deviation of the ground reaction force.
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Affiliation(s)
- M Bisiaux
- Laboratoire d'Etudes de la Motricité Humaine, Faculté des Sciences du Sport et de l'Education Physique, 9 Rue de l'Université, Ronchin, Lille 2, France
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Hotte S, Hirte H, Moretto P, Iacobucci A, Wong D, Korz W, Miller W. 405 POSTER Final results of a Phase I/II study of CTCE-9908, a novel anticancer agent that inhibits CXCR4, in patients with advanced solid cancers. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72339-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Mangialajo L, Bertolotto R, Cattaneo-Vietti R, Chiantore M, Grillo C, Lemee R, Melchiorre N, Moretto P, Povero P, Ruggieri N. The toxic benthic dinoflagellate Ostreopsis ovata: quantification of proliferation along the coastline of Genoa, Italy. Mar Pollut Bull 2008; 56:1209-1214. [PMID: 18381216 DOI: 10.1016/j.marpolbul.2008.02.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 02/12/2008] [Accepted: 02/18/2008] [Indexed: 05/26/2023]
Abstract
Toxic harmful algal bloom (HAB) occurrence is becoming more frequent and problematic in highly urbanized coastal zones. In summer 2005 along the urbanized Genoa coastline (Ligurian Sea, North western Mediterranean Sea), local first aid stations treated about 200 people, who all showed similar symptoms following exposure to marine aerosols. The link with proliferation of Ostreopsis ovata was made, and it highlighted for the first time, the risks that benthic HABs may represent in highly urbanised temperate areas. Subsequently, a specific monitoring plan was designed and implemented in the same area in July 2006, before the first signs of Ostreopsis proliferation were detected. Here we report on this quantification of an Ostreopsis ovata bloom in the Ligurian Sea. Cells were quantified both in the water column and in the epiphytic community on macrophytes. Our results suggest a role of sea water temperature and weather conditions in favouring bloom development.
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Affiliation(s)
- L Mangialajo
- Dipartimento per lo Studio del Territorio e delle sue Risorse, Università degli Studi di Genova, C.so Europa 26, 16132 Genova, Italy.
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Chauvie S, Incerti S, Moretto P, Pia MG. Evaluation of phase effects in Geant4 microdosimetry models for particle interactions in water. ACTA ACUST UNITED AC 2007. [DOI: 10.1109/nssmic.2007.4436472] [Citation(s) in RCA: 2] [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: 11/07/2022]
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Moretto P, Bisiaux M, Lafortune MA. Froude number fractions to increase walking pattern dynamic similarities: application to plantar pressure study in healthy subjects. Gait Posture 2007; 25:40-8. [PMID: 16434196 DOI: 10.1016/j.gaitpost.2005.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [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] [Received: 07/20/2005] [Revised: 12/17/2005] [Accepted: 12/22/2005] [Indexed: 02/02/2023]
Abstract
The purpose of this study was to determine if using similar walking velocities obtained from fractions of the Froude number (N(Fr)) and leg length can lead to kinematic and kinetic similarities and lower variability. Fifteen male subjects walked on a treadmill at 0.83 (VS(1)) and 1.16ms(-1) (VS(2)) and then at two similar velocities (V(Sim27) and V(Sim37)) determined from two fractions of the N(Fr) (0.27 and 0.37) so that the average group velocity remained unchanged in both conditions (VS(1)=V (Sim27)andVS(2)=V (Sim37)). N(Fr) can theoretically be used to determine walking velocities proportional to leg lengths and to establish dynamic similarities between subjects. This study represents the first attempt at using this approach to examine plantar pressure. The ankle and knee joint angles were studied in the sagittal plane and the plantar pressure distribution was assessed with an in-shoe measurement device. The similarity ratios were computed from anthropometric parameters and plantar pressure peaks. Dynamically similar conditions caused a 25% reduction in leg joint angles variation and a 10% significant decrease in dimensionless pressure peak variability on average of five footprint locations. It also lead to heel and under-midfoot pressure peaks proportional to body mass and to an increase in the number of under-forefoot plantar pressure peaks proportional to body mass and/or leg length. The use of walking velocities derived from N(Fr) allows kinematic and plantar pressure similarities between subjects to be observed and leads to a lower inter-subject variability. In-shoe pressure measurements have proven to be valuable for the understanding of lower extremity function. Set walking velocities used for clinical assessment mask the effects of body size and individual gait mechanics. The anthropometric scaling of walking velocities (fraction of N(Fr)) should improve identification of unique walking strategies and pathological foot functions.
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Affiliation(s)
- P Moretto
- Laboratoire d'Etudes de la Motricité Humaine (EA 3608), Faculté des Sciences du Sport et de l'Education Physique, 59790 Ronchin, France.
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Mavon A, Miquel C, Lejeune O, Payre B, Moretto P. In vitro percutaneous absorption and in vivo stratum corneum distribution of an organic and a mineral sunscreen. Skin Pharmacol Physiol 2006; 20:10-20. [PMID: 17035717 DOI: 10.1159/000096167] [Citation(s) in RCA: 147] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2005] [Accepted: 04/21/2006] [Indexed: 11/19/2022]
Abstract
Sunscreens, whose main function is to protect the skin against the harmful effects of solar irradiation, should remain at the skin surface or impregnate the first layers of the stratum corneum only and not penetrate into the underlying living tissue. The goal of this work was to assess the penetration of titanium dioxide (TiO(2)) and methylene bis-benzotriazoyl tetramethylbutylphenol (MBBT), included in a broad-spectrum sunscreen formulation, into human skin in vivo, using the tape stripping method, and in vitro, using a compartmental approach. An additional objective was to propose an easy and minimally invasive approach to determining the percutaneous uptake of sunscreens following topical application. TiO(2) and MBBT were quantified using colorimetric assay and HPLC analysis, respectively. The transmission electron microscopy and particle-induced X-ray emission techniques were used to localize the TiO(2) in skin sections. More than 90% of both sunscreens was recovered in the first 15 tape strippings. In addition we have shown that the remaining 10% did not penetrate the viable tissue, but was localized in the furrows and in the opened infundibulum. Less than 0.1% of MBBT was detected in the receptor medium, and no TiO(2) was detected in the follicle, viable epidermis or dermis. Thus, this in vivo and in vitro penetration study showed an absence of TiO(2) penetration into the viable skin layers through either transcorneal or transfollicular pathways and negligible transcutaneous absorption of MBBT. However, differences in distribution within the stratum corneum reinforced the need for a complementary approach, using minimally invasive in vivo methodology and in vitro compartmental analysis. This combination represents a well-adapted method for testing the safety of topically applied sunscreen formulations in real-life conditions.
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Affiliation(s)
- A Mavon
- Laboratoire de Pharmacocinétique Cutanée, Institut de Recherche Pierre Fabre, Castanet-Tolosan, France.
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Bresson C, Lamouroux C, Sandre C, Tabarant M, Gault N, Poncy JL, Lefaix JL, Den Auwer C, Spezia R, Gaigeot MP, Ansoborlo E, Mounicou S, Fraysse A, Deves G, Bacquart T, Seznec H, Pouthier T, Moretto P, Ortega R, Lobinski R, Moulin C. An interdisciplinary approach to investigate the impact of cobalt in a human keratinocyte cell line. Biochimie 2006; 88:1619-29. [PMID: 17007991 DOI: 10.1016/j.biochi.2006.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Accepted: 09/04/2006] [Indexed: 11/15/2022]
Abstract
Since in nuclear power plants, risks of skin contact contamination by radiocobalt are significant, we focused on the impact of cobalt on a human cutaneous cell line, i.e. HaCaT keratinocytes. The present paper reports an interdisciplinary approach aimed at clarifying the biochemical mechanisms of metabolism and toxicity of cobalt in HaCaT cells. Firstly, a brief overview of the used instrumental techniques is reported. The following parts present description and discussion of results concerning: (i) toxicological studies concerning cobalt impact towards HaCaT cells (ii) structural and speciation fundamental studies of cobalt-bioligand systems, through X-ray absorption spectroscopy (XAS), ab initio and thermodynamic modelling (iii) preliminary results regarding intracellular cobalt speciation in HaCaT cells using size exclusion chromatography/inductively coupled plasma-atomic emission spectroscopy (SEC/ICP-AES) and direct in situ analysis by ion beam micropobe analytical techniques.
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Affiliation(s)
- C Bresson
- DEN/DANS/DPC/SECR/LSRM, CEA Saclay, Batiment 391, 91191 Gif-sur-Yvette, France
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Pihet D, Moretto P, Defebvre L, Thevenon A. Analyse de la marche dans la maladie de Parkinson par enregistrement baropodométrique à l’aide de semelles embarquées. Rev Neurol (Paris) 2006; 162:208-13. [PMID: 16518261 DOI: 10.1016/s0035-3787(06)75001-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The literature reports some studies describing the walking pattern of patients with Parkinson's disease, its deterioration with disease severity and the effects of various treatments. Other studies concerned the plantar pressure distribution when walking. The aim of this study was to validate the use of baropodometric measurements for gait analysis of parkinsonian patients at various stages of disease severity and in on and off phases. METHODS Fifteen normal control subjects and fifteen parkinsonian patients equipped with a plantar pressure measurement system performed walking tests. The parkinsonian patients performed the walking tests in off phase then in on phase. A clinical examination was performed to score the motor handicap on the UPDRS scale. RESULTS Analysis of the plantar pressures of the parkinsonian subjects under various footprint areas detected significant baropodometric differences compared with controls, between groups with different UPDRS scores, and before and after L-Dopa treatment. CONCLUSIONS Plantar pressures measurements allow a sufficiently fine discrimination for using it to detect parkinsonism and monitor patients with Parkinson's disease.
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Affiliation(s)
- D Pihet
- Laboratoire d'Etudes de la Motricité Humaine, EA 3608, Faculté des Sciences du Sport, Ronchin
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Lefèvre B, Thévenon A, Moretto P. [The effect of similar speed's walking and functional classification of foot contact on variability of the vertical ground reaction force]. ACTA ACUST UNITED AC 2004; 47:164-8. [PMID: 15130714 DOI: 10.1016/j.annrmp.2003.12.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2003] [Accepted: 12/12/2003] [Indexed: 11/23/2022]
Abstract
INTRODUCTION The variability of the normal ground reaction force (F(z)) is a restrictive factor for the clinical analyse of kinetics parameters recorded during walking. OBJECTIVE The aim of this study is the decrease of the inter-individual variability of the normal ground reaction force: F(z). MATERIAL AND METHOD The method tested consists in imposing a similar speed to the subjects during walking tests, then to class foot according to their function: loading or propulsive foot. A group of seven young adults walk at spontaneous speed (VSpon) for the first walking test then at similar speed (Vsim = N(Fr) x square root of (g x li); where N(Fr) is the Froud's number, g is the gravitational acceleration and li is the length of the lower limb) for the second walking test. Two forces platforms register the F(z) of two consecutive steps. The normal ground reaction force and the mean coefficient of variability are retained to test for speed (VSim and VSpon) and functional classification effects. RESULTS The CoV of F(z) decreases from 13% to 8% when the subjects walk at similar speed rather than at spontaneously chosen speed. The variability decreases by 1-1.5% when the data are classified according to functional criterion. The inter-individual variability of the F(z) significantly reduces when the tests are performed at similar speed and when the loading or propulsive factors are used for functional classification. CONCLUSION The coupling of the methods described must permit to the clinician to constitute a data base which, tainted of less variability, should make easier the detection of pathology affecting the ground reaction force.
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Affiliation(s)
- B Lefèvre
- Laboratoire d'études de la motricité humaine, FSSEP, 9, rue de l'université, 59790 Ronchin, France
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Bisiaux M, Moretto P, Lensel G, Thévenon A. Détermination d’un seuil de pression plantaire attendu : utilisation de l’approche adimensionnelle pour réduire la variabilité des pressions plantaires. ACTA ACUST UNITED AC 2003; 46:539-44. [PMID: 14585531 DOI: 10.1016/j.annrmp.2003.03.004] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The aim of this study was to verify that the determination of walking velocities proportional to the leg lengths of the subjects together with the dimensionless expression of the results enable us to decrease the variability and to determine a plantar pressure threshold. MATERIALS AND METHODS Fifteen male subjects performed two walking tests on a treadmill at imposed velocities (V1 and V3) and similar velocities (V27 and V37). Similar velocities (Vsim =Nfr(g.Li)(0.5)) were determined from two fractions of the Froude number (Nfr), the gravitational acceleration (g) and the length of the lower limb (Li) of the subjects. An in-shoe plantar pressure measurement system allowed the pressure peaks to be recorded. The peak of pressure (p) was reported to the step length (a) and the weight of the subject (mg) for the dimensionless pressure peaks (Dim(P)=p.a2/mg) to be expressed. The coefficients of variability (CoV) and extends of the dimensionless pressure peaks (Epp) have been studied at the different imposed walking velocities. RESULTS The CoV and Epp of the dimensionless pressure peaks recorded at V27 and V37 (similar velocities) are from 2 to 9% and 3 to 22% lower than those observed at V1 and V3, respectively. DISCUSSION-CONCLUSION The analysis of the pressure peaks CoV and Epp shows that the method should allow a data bank usable to detect the effects of a disability on the plantar pressures to be elaborated. Indeed, our results enable us to define a plantar pressure pattern with a variability lower than those reported in most scientific articles.
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Affiliation(s)
- M Bisiaux
- Laboratoire d'études de la motricité humaine, FSSEP, 9, rue de l'Université, 59790 Ronchin, France
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Hirsch L, Natali F, Moretto P, Barrière AS, Byrne D, Semond F, Massies J, Grandjean N, Antoine-Vincent N, Leymarie J. RBS studies of AlGaN/AlN Bragg reflectors. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pssa.200306143] [Citation(s) in RCA: 3] [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: 11/09/2022]
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Debouzy JC, Gadelle A, Tymen H, Le Gall B, Millot X, Moretto P, Fauvelle F, Le Peoc'H M, Dabouis V, Martel B. [In vitro uranyle affinity of per (3,6-anhydro-2-O-carboxyméthyle)-alpha-cyclodextrin and conditions required for in vivo application]. Ann Pharm Fr 2003; 61:62-9. [PMID: 12589256] [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: 02/28/2023]
Abstract
Per (3.6-anhydro-2-O-carboxymethyle)- alpha-cyclodextrin ([1]) is a polydentate analog of EDTA, a well-known cation chelating reagent. [1] exhibits strong affinities in vitro for lanthanids, cobalt and also for uranyl cations. Hence, a 1:1 stoechiometry and a high affinity for uranyle (6<logK<7) is found in vitro. Moreover, [1] is not hemolytic and exhibits not lettral properties in mice (LD(50)=42mM). In vivo injection at supralethal amounts of uranyl complex of [1] prevents immediate death in mice while unable to protect against later death. Pharmacocinetic studies show that a dissociation of the complex occurs lead to the release of free uranyle. Other complexation assays using [1] grafted tissues show that chelating properties for lead and uranyle differ from thoses observed in vitro.
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Femery V, Moretto P, Renaut H, Lensel G, Thevenon A. [Asymmetries in dynamic plantar pressure distribution measurement in able-bodied gait: application to the study of the gait asymmetries in children with hemiplegic cerebral palsy]. Ann Readapt Med Phys 2002; 45:114-22. [PMID: 11911930 DOI: 10.1016/s0168-6054(02)00186-1] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The aim of this study was to analyse, firstly, the plantar pressure distribution in healthy subjects in order to validate or invalidate the previous studies results on the asymmetrical profile of the stance phase. The studies of asymmetries was based on the identification of a propulsive foot and a loading foot from a concept introduced by Viel. Secondly, the approach was applied to the study of gait asymmetries in two children with hemiplegic cerebral plasy. MATERIAL AND METHOD Thirty healthy control subjects and two hemiplegic children (H1 and H2) performed a walking test at self selected speed. The recordings of dynamic parameters were realized thanks to an in-shoe plantar pressure analysis system (Parotec, by Paromed Medizintechnik, GMBH, Germany). The pressure peaks were determined from the recording of pressures under eight footprint locations. A program calculated the sum of forces under the heel and determined the loading foot. By defect, the second foot is the propulsive foot. RESULTS The asymmetrical profile of the human normal stance phase was validated. Under the heel, the pressure peaks lower by 28 % were noticed beneath the loading foot compared to the propulsive foot. Inversely, under the metatarsal heads and the hallux, the pressure peaks were greater by 32 % beneath the propulsive foot. For the two hemiplegic children, the plantar pressure profile equally highlighted significant differences between the unaffected and affected feet. The pressure peaks under the affected heel were respectively lower by 21 % and 97 % for H1 and H2. The loading function was found and associated to the affected limb. The propulsive function was not systematically found under the unaffected foot. DISCUSSION The analysis of plantar pressure measurements during able-bodied gait showed differences between the two lower limbs. These dynamic asymmetries are the results of a natural functional organization of the supports differentiating a loading foot and a propulsive foot and corroborating the concept proposed by Viel. The hemiplegic gait also presented dynamic asymmetries partially agreement with a personalized functional logic of loading and propulsion. However, the asymmetrical profile can also result a gait self-optimization strategy compensating biomechanical, anatomical and physiological disorders linked to the cerebral deficiency.
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Affiliation(s)
- V Femery
- Laboratoire détudes de la motricité humaine, FSSEP, 9, rue de lUniversité, 59790, Ronchin, France.
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Gherardi RK, Coquet M, Cherin P, Belec L, Moretto P, Dreyfus PA, Pellissier JF, Chariot P, Authier FJ. Macrophagic myofasciitis lesions assess long-term persistence of vaccine-derived aluminium hydroxide in muscle. Brain 2001; 124:1821-31. [PMID: 11522584 DOI: 10.1093/brain/124.9.1821] [Citation(s) in RCA: 231] [Impact Index Per Article: 10.0] [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: 11/12/2022] Open
Abstract
Macrophagic myofasciitis (MMF) is an emerging condition of unknown cause, detected in patients with diffuse arthromyalgias and fatigue, and characterized by muscle infiltration by granular periodic acid-Schiff's reagent-positive macrophages and lymphocytes. Intracytoplasmic inclusions have been observed in macrophages of some patients. To assess their significance, electron microscopy was performed in 40 consecutive cases and chemical analysis was done by microanalysis and atomic absorption spectrometry. Inclusions were constantly detected and corresponded to aluminium hydroxide, an immunostimulatory compound frequently used as a vaccine adjuvant. A lymphocytic component was constantly observed in MMF lesions. Serological tests were compatible with exposure to aluminium hydroxide-containing vaccines. History analysis revealed that 50 out of 50 patients had received vaccines against hepatitis B virus (86%), hepatitis A virus (19%) or tetanus toxoid (58%), 3-96 months (median 36 months) before biopsy. Diffuse myalgias were more frequent in patients with than without an MMF lesion at deltoid muscle biopsy (P < 0.0001). Myalgia onset was subsequent to the vaccination (median 11 months) in 94% of patients. MMF lesion was experimentally reproduced in rats. We conclude that the MMF lesion is secondary to intramuscular injection of aluminium hydroxide-containing vaccines, shows both long-term persistence of aluminium hydroxide and an ongoing local immune reaction, and is detected in patients with systemic symptoms which appeared subsequently to vaccination.
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Affiliation(s)
- R K Gherardi
- Equipe mixte INSERM E 0011/Université Paris XII, France.
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Femery V, Moretto P, Renaut H, Thévenon A. [Spasticity and dynamic plantar pressure distribution measurements in hemiplegic spastic children]. Ann Readapt Med Phys 2001; 44:26-34. [PMID: 11587652 DOI: 10.1016/s0168-6054(00)00060-x] [Citation(s) in RCA: 7] [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] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this study was to analyse the plantar pressure distribution in nine hemiplegic spastic children to illustrate the dynamic alteration during stance phase linked spasticity grade. MATERIAL AND METHODS The graduation of the lower limbs muscle tone related to the Aschworth spasticity scale enabled us to identify two groups of hemiplegics subjects. The groups Asch 1 and Asch 3 have respectively presented a low and a strong spasticity. The peak pressures during consecutive gait cycles were determined under the feet of 30 healthy subjects and two cerebral palsy groups using a wearable footprint analysis system. RESULTS A statistical study showed a similarity between the two disabled groups. Peak pressures under the midfoot were significantly higher compared to the control group. While the plantar pressure distribution profile was specific for each group under all other anatomical structures. The significant alterations were observed under the forefoot and hallux. DISCUSSION-CONCLUSION Spasticity modifies the foot contact to ground and leads to a specific plantar pressure distribution profile linked to the spasticity grade. The equinovarus with clawed toes deformity due to higher spasticity seems to be an important factor in terminal stance phase perturbations. However spastic hemiplegic subjects seem to adopt a gait pattern in agreement with stability optimization criteria.
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Affiliation(s)
- V Femery
- Laboratoire d'études de la motricité humaine, FSSEP, 9, rue de l'Université, 59790, Ronchin, France.
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Abstract
PURPOSE The purposes of this study were to analyze velocity (V), stroke length (SL), and stroke rate (SR) values during the 100-m freestyle competitive events in top level male and female swimmers with a disability (DS) according to the international Functional Classification System (FCS) and to compare the results obtained with those of able-bodied swimmers (ABS). METHODS DS (N = 119) and ABS (N = 32) were tested in real competitive conditions during European and French swimming championships in the A finals of the 100-m freestyle. RESULTS V and SL increased significantly (P < 0.01) according to the level of ability from class S3 up to S10. SL values were significantly different (P < 0.01) between males and females in each class group. On the contrary, SR was not significantly different between genders, between each class group of FCS, and also with ABS. The major result of this study was that stroke length was related to velocity whereas stroke rate was not. The differences in weekly training time between each class of DS were not significantly different and showed that performances seemed to be more related to the various locomotor disabilities than to the training status. CONCLUSIONS These findings, which are discussed, showed that stroke index (SI = V.SL) could be used as a sensitive criterion to assess the swimmer with a disability in relationship to his classification level.
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Affiliation(s)
- P Pelayo
- Laboratoire d' Etudes de la Motricité Humaine, Faculté des Sciences du Sport et de L'Education Physique, Université de Lille 2, France.
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Duvillard C, Benoit L, Moretto P, Beltramo JL, Brunet-Lecomte P, Correia M, Sergent C, Chauffert B. Epinephrine enhances penetration and anti-cancer activity of local cisplatin on rat sub-cutaneous and peritoneal tumors. Int J Cancer 1999; 81:779-84. [PMID: 10328233 DOI: 10.1002/(sici)1097-0215(19990531)81:5<779::aid-ijc19>3.0.co;2-i] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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: 11/09/2022]
Abstract
Despite the theoretical advantages of a high local concentration of anti-cancer drugs, local chemotherapy often fails to produce complete and lasting responses in experimental and human solid tumors. Experiments using Patent Blue dye showed that fluids diffused poorly into tumor mass when injected inside or around s.c. rat tumors in rats. In the same way, Patent Blue dye distributed poorly from the peritoneal cavity into the tumor nodules of rats with peritoneal carcinomatosis. The potent vasoconstrictor, epinephrine (1 mg/kg of body weight) was shown to facilitate the penetration of Patent Blue dye into s.c. and peritoneal rat tumors. Platinum concentration evaluated by micro-PIXE in s.c. DHD/K12/ PROb colon tumors or by atomic absorption spectrometry in DHD/K12/PROb peritoneal tumors was 4- to 12-fold higher when epinephrine was added to local cisplatin. Peri-tumoral or intra-tumoral injection of cisplatin (2 mg/kg) alone does not cure s.c. DHD/K12/PROb colon tumors or GV1A1 glioma tumors in BD IX rats. By contrast, a complete and lasting cure of s.c. tumors was achieved regularly and without skin necrosis when epinephrine was added to intra-tumoral or peri-tumoral cisplatin. Rats with peritoneal-tumor nodules 1 to 2 mm in diameter, and insensitive to i.p. cisplatin alone, were cured when the anti-cancer drug was combined with epinephrine. These experimental results could justify clinical trials using a combination of cisplatin and epinephrine in the treatment of locally growing solid tumors.
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Affiliation(s)
- C Duvillard
- CJF INSERM 94/08, Groupe Biologie et Thérapie des Cancers (JE MENRT 515), Faculty of Medicine, Dijon, France
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Moretto P. Nuclear microprobe: a microanalytical technique in biology. Cell Mol Biol (Noisy-le-grand) 1996; 42:1-16. [PMID: 8833662] [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: 02/02/2023]
Abstract
The nuclear microprobe is an instrument of elemental microanalysis, with imaging capabilities, particularly suitable for the measurement of trace elements in biological tissues. It makes use of the numerous types of emitted radiations resulting from the interaction of MeV charged particles with the matter. Particle Induced X-ray Emission, Rutherford Backscattering Spectrometry, Nuclear Reaction Analysis and Scanning Transmission Ion Microscopy are analysis or imaging techniques which can be simultaneously carried out using a particle microbeam. The analysis may be routinely achieved at the part per million level of sensitivity, the micron spatial resolution and in multi-elemental mode. In addition, the combination of elemental mapping with high resolution STIM imaging allows the technique to provide a wealth of useful information on the sample under investigation. This paper is an introduction to ion beam technique of microanalysis. Basic principles are briefly discussed as well as practical aspects concerning the sample preparation and the beam damages.
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Affiliation(s)
- P Moretto
- URA 451 du CNRS, CENBG, Le Haut Vigneau, France
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38
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Bara M, Moretto P, Razafindrabe L, Llabador Y, Simonoff M, Guiet-Bara A. Nuclear microanalysis of the effect of magnesium and taurine on the ionic distribution in the human amniotic membrane. Cell Mol Biol (Noisy-le-grand) 1996; 42:27-38. [PMID: 8833664] [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: 02/02/2023]
Abstract
The effect of the addition of MgCl(2) and of taurine on the concentration and distribution of ions, present in physiological fluid, in epithelial (EL) and compact (CL) layers of the human amniotic membrane has been investigated using the Bordeaux nuclear microprobe. Particle induced X-ray emission and Rutherford backscattering spectrometry techniques had been used to provide quantitative measurements. In physiological medium (Hanks' solution), the monovalent ions (Na+, K+, Cl-) concentrations were identical in both layers. This data indicates that the compact layer acts as a buffer which fix minerals. Mg(2)+, Ca(2)+ and phosphorus levels were higher in EL than in CL. The addition of MgCl(2) in Hanks' solution induced a decrease of the monovalent ions concentration in both layers except Na+ level in EL which remained constant, an increase of the Mg(2)+ level in both layers while the Ca(2)+ and phosphorus remained constant. Addition of taurine in the Hanks' solution implicated several observations: taurine had no effect on the Na+, Mg(2)+, Ca(2)+ and phosphorus levels in EL and CL, but decreased the K+ and Cl- concentrations in both layers. The quantitative results may be related to electrophysiological observations on ionic exchanges through channels and paracellular pathways. The nuclear microanalysis processing may be of great interest to explain pregnancies complicated by poly or oligohydramnios.
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Affiliation(s)
- M Bara
- Laboratory of Physiopathology of Development (Cellular Interactions Group), University P. M. Curie, Paris, France
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39
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Ortega R, Moretto P, Fajac A, Benard J, Llabador Y, Simonoff M. Quantitative mapping of platinum and essential trace metal in cisplatin resistant and sensitive human ovarian adenocarcinoma cells. Cell Mol Biol (Noisy-le-grand) 1996; 42:77-88. [PMID: 8833669] [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: 02/02/2023]
Abstract
Platinum and trace metal distributions of a human ovarian adenocarcinoma cell line, IGROV1, and a subline resistant to the antitumor agent cisplatin were compared using nuclear microprobe analysis. The cisplatin-resistant cell line IGROV1-DDP exhibited a cytologically heterogeneous cell population. Two subpopulations were distinguished, small mononuclear cells, morphologically similar to the parental cells IGROV1, and enlarged polynuclear cells. Quantitative mapping of platinum and essential trace metal such as manganese, iron, copper and zinc was performed at the cellular level. Elemental maps were obtained with 2 mu m spatial resolution. Platinum appeared uniformly distributed within the cells, in all cell types. The same was true for copper and zinc. In some cases, iron maps showed preferential localization in the perinuclear region, especially in IGROV1-DDP polynuclear cells. Cisplatin resistance was associated with decreased platinum and iron concentrations and increased levels of copper and zinc. Decreased drug accumulation was encountered in both subpopulations of the resistant cell line. In contrast, high inter-individual variation of copper content was noticed in this cell line suggesting that in vitro cisplatin selection of human ovarian adenocarcinoma resistant cells can bring about the emergence of distinct cellular phenotypes.
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Affiliation(s)
- R Ortega
- Centre d'Etudes Nucleaires de Bordeaux Gradignan, Cedex, France
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40
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Bara M, Guiet-Bara A, Moretto P. The use of nuclear microprobe in biology and medicine. Cell Mol Biol (Noisy-le-grand) 1996; 42:i. [PMID: 8833661] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- M Bara
- University Pierre et Marie Curie, Paris, France
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41
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Bara M, Guiet-Bara A, Moretto P. Present and further research in nuclear microprobe. Cell Mol Biol (Noisy-le-grand) 1996; 42:133-4. [PMID: 8833675] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- M Bara
- University Pierre et Marie Curie, Paris, France
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42
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Ferrarese L, Trainotti L, Moretto P, Polverino de Laureto P, Rascio N, Casadoro G. Differential ethylene-inducible expression of cellulase in pepper plants. Plant Mol Biol 1995; 29:735-47. [PMID: 8541500 DOI: 10.1007/bf00041164] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Ethylene promotes the abscission of leaves and the ripening of fruits in pepper plants, and in both events an increase in cellulase activity is observed. However, two enzyme isoforms (pI 7.2 and 8.5, respectively) are differentially involved in the two physiological phenomena. The pI 8.5 form has been purified from ripe fruits. It is a glycoprotein with an apparent molecular mass of 54 kDa. Two short peptides were sequenced and a very high homology to a tomato cellulase was observed. Polyclonal antibodies, raised against the purified enzyme, have allowed us to demonstrate that the observed ethylene-induced increase in cellulase activity is paralleled by de novo synthesis of protein. Three cDNAs (CX1, CX2 and CX3), encoding different cellulases, were obtained and characterized and their expression investigated. Accumulation of all three mRNAs is induced by ethylene treatment, though to different levels. CX1 is mainly expressed in ripe fruits while CX2 is especially found in abscission zones. CX3 accumulates at very low levels in activated abscission zones. Comparisons with other known cellulases demonstrate clear heterogeneity within the higher plant cellulases. Differences in ethylene inducibility and molecular structure suggest different physiological roles for cellulase in pepper plants.
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Affiliation(s)
- L Ferrarese
- Department of Biology, University of Padua, Padova, Italy
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Pelayo P, Moretto P, Robin H, Sidney M, Gerbeaux M, Latour MG, Marc-Lavoie J. Adaptation of maximal aerobic and anaerobic tests for disabled swimmers. Eur J Appl Physiol Occup Physiol 1995; 71:512-17. [PMID: 8983918 DOI: 10.1007/bf00238553] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The purpose of the present study was to submit disabled swimmers to two maximal swimming tests, and by comparing the physiological and performance responses of disabled and normal swimmers to determine if these adapted tests can be used to design training programmes for this particular class of swimmer. Two groups of disabled (n = 8 and 6) and two groups of normal competitive swimmers (n = 9 and 13) were respectively submitted to a functional maximal aerobic power test (FMAPT) and a maximal anaerobic lactic test (MANLT). For the disabled, the FMAPT included a slower initial speed and a slower increase in swimming speeds. In the maximal aerobic test, exercise duration, peak heart rate, and the maximal speed relative to the respective best time of a 100-m race [55.5 (SD 3.9) compared to 56.5 (SD 2.8)%] were not significantly different between the disabled and normal swimmers. Peak lactate concentration was, however, higher in the disabled swimmers [10.8 (SD 3.5) compared to 6.8 (SD 1.6)mmol.l-1]. In the MNALT, peak lactate concentration [14.3 (SD 4) compared to 16.8 (SD 1.9)mmol.l-1], and the maximal speed relative to the respective best time in a 100-m race [99.1 (SD 3.2) compared to 98.3 (SD 2.5)%] were not significantly different between the disabled and normal swimmers. These results would seem to indicate that functional maximal aerobic and anaerobic field tests could be used to evaluate and design training programmes for disabled competitive swimmers.
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Affiliation(s)
- P Pelayo
- Faculté des Sciences du Sport et de l'Education Physique, Université de Lille II, Ronchin, France
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44
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Bara M, Guiet-Bara A, Moretto P, Razafindrabe L, Llabador Y, Simonoff M, Durlach J. Nuclear microanalysis of the monovalent ion distribution in the human amnion. I. Effect of magnesium. Magnes Res 1995; 8:207-14. [PMID: 8845284] [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: 02/02/2023]
Abstract
The effect of the addition of MgCl2 on the Na+, K+, and Cl- concentration and distribution in epithelial and compact layers of the human amniotic membrane was investigated using the Bordeaux nuclear microprobe. Particle-induced X-ray emission and Rutherford backscattering spectrometry techniques were used to provide quantitative measurements. In physiological medium (Hanks' solution), the monovalent ion concentrations were identical in both layers. The addition of Mg2+ ions in Hanks' solution induced a decrease of, K+, and Cl- concentration in both layers and, Na+ concentration in the compact layer. The results obtained from nuclear microanalysis might be explained from electrophysiological data which indicate that the addition of Mg2+ ions results in an increase in the cellular, paracellular and exchanger ion pathways.
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Affiliation(s)
- M Bara
- Laboratoire de Physiopathologie du Développement, Université P.M. Curie, Paris, France
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45
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Debarberis L, Moretto P. In-pile tritium release rate limiting process study. Fusion Engineering and Design 1993. [DOI: 10.1016/0920-3796(93)90109-u] [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: 10/26/2022]
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Abstract
A specific selenium deficiency is a risk factor for Keshan disease, an endemic cardiomyopathy observed in China. In a Sahelian area of Niger, plasma selenium concentration was measured by neutronic activation and particle induced X-ray emission in 35 black African women with peripartum cardiomyopathy and 36 breast-feeding women without cardiac failure as controls. The plasma selenium concentration in patients was lower (48 +/- 25 ng/ml, mean +/- standard deviation) than in controls (77 +/- 16 ng/ml) (P less than 0.0001). Moreover, 40% (14/35) patients with peripartum cardiomyopathy had very low plasma selenium concentrations, below 45 ng/ml, versus none in controls. A low plasma selenium concentration is a risk factor for the Sahelian peripartum cardiomyopathy.
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Affiliation(s)
- A Cénac
- Service de Médecine Interne (P. Béné), CHRU Morvan, Brest, France
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Abstract
Antioxidant status can be evaluated by blood selenium, vitamins A and E. The level of selenium was determined in whole blood, erythrocytes and plasma of 170 French people (70-95 years old) healthy and with intercurrent illness, by using PIXE (proton-induced X-ray emission analysis). These results are discussed with other values from the literature. Plasma levels of vitamins A and E have been measured by HPLC. All data were compared with those obtained for younger subjects. Healthy elderly people residing in a geriatric home received selenium supplements during 1 month. The influence of this supplementation brought to light a deficiency for this trace element. The correlation of aging and nutritional requirements with immune function, heart and cancer death rate is presented and discussed.
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Affiliation(s)
- M Simonoff
- Centre d'Etudes Nucléaires de Bordeaux-Gradignan URA 451 du CNRS, France
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48
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Moretto P, Rocca M, Valbusa U, Black J. Rayleigh wave dispersion on Ag(100) along the <100> direction. Phys Rev B Condens Matter 1990; 41:12905-12907. [PMID: 9993768 DOI: 10.1103/physrevb.41.12905] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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