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Lugowska I, Stanczak A, Roszkowski K, Dziadziuszko R, Duchnowska R, Kubiatowski T, Bodnar L, Szczylik C, Chorostowska Wynimko J, Popiel D, Skupinska M, Judycka A, Rudzki P, Pieczykolan J, Wieczorek M. 46O Preliminary results from a phase IA trial of selective FGFR1-3 inhibitor CPL304110 in patients with FGFR-deregulated advanced solid malignancies. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.100904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Kim D, Banerdt WB, Ceylan S, Giardini D, Lekić V, Lognonné P, Beghein C, Beucler É, Carrasco S, Charalambous C, Clinton J, Drilleau M, Durán C, Golombek M, Joshi R, Khan A, Knapmeyer-Endrun B, Li J, Maguire R, Pike WT, Samuel H, Schimmel M, Schmerr NC, Stähler SC, Stutzmann E, Wieczorek M, Xu Z, Batov A, Bozdag E, Dahmen N, Davis P, Gudkova T, Horleston A, Huang Q, Kawamura T, King SD, McLennan SM, Nimmo F, Plasman M, Plesa AC, Stepanova IE, Weidner E, Zenhäusern G, Daubar IJ, Fernando B, Garcia RF, Posiolova LV, Panning MP. Surface waves and crustal structure on Mars. Science 2022; 378:417-421. [DOI: 10.1126/science.abq7157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We detected surface waves from two meteorite impacts on Mars. By measuring group velocity dispersion along the impact-lander path, we obtained a direct constraint on crustal structure away from the InSight lander. The crust north of the equatorial dichotomy had a shear wave velocity of approximately 3.2 kilometers per second in the 5- to 30-kilometer depth range, with little depth variation. This implies a higher crustal density than inferred beneath the lander, suggesting either compositional differences or reduced porosity in the volcanic areas traversed by the surface waves. The lower velocities and the crustal layering observed beneath the landing site down to a 10-kilometer depth are not a global feature. Structural variations revealed by surface waves hold implications for models of the formation and thickness of the martian crust.
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Mituła F, Równicki M, Pieczykolan J, Kornatowski T, Marczak M, Moroz A, Pietrow P, Mroczkiewicz M, Piast R, Dąbrowski D, Górka M, Abramczyk O, Wieczorek M, Popiel D. Design and development of an innovative, safe, and highly potent E1 ubiquitin-activating enzyme inhibitor CPL–410-005 conjugate in anticancer therapy. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01036-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Moes-Sosnowska J, Skupinska M, Lechowicz U, Skronska P, Szczepulska-Wojcik E, Stepniewska A, Rozy A, Langfort R, Rudzinski P, Orlowski T, Popiel D, Wieczorek M, Chorostowska-Wynimko J. EP16.03-014 Simultaneous Detection of FGFR Gene Aberrations in Squamous Non-small Cell Lung Cancer Using Targeted DNA- and RNA-based NGS. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Baumgart H, Wieczorek M, Modzelewski J, Pydyś L, Baran A, Rabiejewski M. 399 Effectiveness and safety of external cephalic version as a method of reducing cesarean sections rates. Eur J Obstet Gynecol Reprod Biol 2022. [DOI: 10.1016/j.ejogrb.2021.11.340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gagesch M, Wieczorek M, Vellas B, Kressig RW, Rizzoli R, Kanis J, Willett WC, Egli A, Lang W, Orav EJ, Bischoff-Ferrari HA. Effects of Vitamin D, Omega-3 Fatty Acids and a Home Exercise Program on Prevention of Pre-Frailty in Older Adults: The DO-HEALTH Randomized Clinical Trial. J Frailty Aging 2022; 12:71-77. [PMID: 36629088 DOI: 10.14283/jfa.2022.48] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND The benefits of supplemental vitamin D3, marine omega-3 fatty acids, and a simple home exercise program (SHEP) on frailty prevention in generally healthy community-dwelling older adults are unclear. OBJECTIVE To test the effect of vitamin D3, omega-3s, and a SHEP, alone or in combination on incident pre-frailty and frailty in robust older adults over a follow-up of 36 months. METHODS DO-HEALTH is a multi-center, double-blind, placebo-controlled, 2x2x2 factorial randomized clinical trial among generally healthy European adults aged 70 years or older, who had no major health events in the 5 years prior to enrollment, sufficient mobility and intact cognitive function. As a secondary outcome of the DO-HEALTH trial, among the subset of participants who were robust at baseline, we tested the individual and combined benefits of supplemental 2,000 IU/day of vitamin D3, 1 g/day of marine omega-3s, and a SHEP on the odds of being pre-frail and frail over 3 years of follow-up. RESULTS At baseline, 1,137 out of 2,157 participants were robust (mean age 74.3 years, 56.5% women, mean gait speed 1.18 m/s). Over a median follow-up time of 2.9 years, 696 (61.2%) became pre-frail and 29 (2.6%) frail. Odds ratios for becoming pre-frail were not significantly lower for vitamin D3, or omega 3-s, or SHEP, individually, compared to control (placebo for the supplements and control exercise). However, the three treatments combined showed significantly decreased odds (OR 0.61 [95% CI 0.38-0.98; p=0.04) of becoming pre-frail compared to control. None of the individual treatments or their combination significantly reduced the odds of becoming frail. CONCLUSION Robust, generally healthy and active older adults without major comorbidities, may benefit from a combination of high-dose, supplemental vitamin D3, marine omega-3s, and SHEP with regard to the risk of becoming pre-frail over 3 years.
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Lanz P, Wieczorek M, Sadlon A, de Godoi Rezende Costa Molino C, Abderhalden LA, Schaer DJ, Spahn DR, Freystätter G, Orav EJ, Egli A, Bischoff-Ferrari HA. Iron Deficiency and Incident Infections among Community-Dwelling Adults Age 70 Years and Older: Results from the DO-HEALTH Study. J Nutr Health Aging 2022; 26:864-871. [PMID: 36156678 DOI: 10.1007/s12603-022-1836-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
OBJECTIVES To assess if baseline iron deficiency, with or without anemia, is associated with incident infections over 3 years among community-dwelling older adults. DESIGN Prospective secondary analysis of DO-HEALTH, a 3-year randomized, double-blind controlled trial. SETTING AND PARTICIPANTS 2157 community-dwelling adults age 70+ from 5 European countries with good cognitive function and mobility and no major health events in the 5 years prior to enrollment Measurements: Incident infections, their severity and type were recorded every 3 months throughout the 3-year follow-up. Iron deficiency was defined as soluble transferrin receptor (sTfR) levels > 28.1 nmol/l and anemia as hemoglobin levels < 120 g/l for women and 130 g/l for men. We applied negative binomial mixed effects regression models with random effects for countries, and controlling for treatment allocation, age, sex, body mass index, polypharmacy, number of comorbidities, smoking status, living situation, alcohol intake, frailty status, and physical activity levels. A pre-defined stratified analysis was performed to explore if the associations between iron deficiency and infections were consistent by baseline anemia status. RESULTS In total, 2141 participants were included in the analyses (mean age 74.9 years, 61.5% of women, 26.8% with iron deficiency). Across all participants, baseline iron deficiency was not associated with incident overall infections, but was associated with a 63% greater rate of incident severe infections requiring hospitalization (incidence rate ratio [IRR] 1.63, 95% Confidence Interval [CI] 1.11-2.41, p=0.01). This association was more pronounced among the 2000 participants who did not have anemia at baseline (IRR=1.80, 95% CI 1.20-2.69, p=0.005). CONCLUSION Based on this prospective study among generally healthy European community-dwelling older adults, iron deficiency was not associated with the incidence rate of overall infections but may increase the incidence of severe infections. Intervention studies are needed to prove the causality of this observation.
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Sosnowski R, Popiel D, Gapska P, Skupińska M, Stajno P, Sobieszek-Prochorec M, Ligaj M, Demkow T, Stańczak A, Wieczorek M, Pieczykolan J. 712P Analysis of fibroblast growth factor receptor 3 aberrations in bladder cancer, for enabling personalized and effective therapy based on FGFR inhibitor. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Moes-Sosnowska J, Rozy A, Skupinska M, Lechowicz U, Szczepulska-Wojcik E, Langfort R, Rudzinski P, Orlowski T, Popiel D, Wieczorek M, Stańczak A, Chorostowska-Wynimko J. P35.08 RNA-Based Gene Alteration and Expression Analysis in Sq-NSCLC with known FGFR1 Amplification and Protein Expression Status. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Skupinska M, Obtulowicz T, Moes-Sosnowska J, Rozy A, Szczepulska E, Langfort R, Wynimko JC, Stanczak A, Pieczykolan J, Wieczorek M, Popiel D. 1409P Comparing different methods of FGFR1 aberrations analysis in squamous cell lung cancer (SqCLC) targeted therapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Wieczorek M, Rotonda C, Sellam J, Guillemin F, Rat AC. FRI0384 BODY COMPOSITION AS A MEDIATOR IN THE RELATIONSHIP BETWEEN PHYSICAL ACTIVITY AND PHYSICAL FUNCTION IN LOWER-LIMB OSTEOARTHRITIS: RESULTS FROM THE KHOALA COHORT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Many trials investigated the beneficial effect of physical activity (PA) on physical function (PF) in people with osteoarthritis (OA), but factors involved in this relationship are poorly understood. Considering the link between OA and obesity and obesity-related disorders, body composition (BC) could be one of these factors.Objectives:To examine the relationships between baseline components of PA and 5-year PF scores, considering BC variables measured at 3 years as potential mediators in theses associations (Figure).Methods:We used data from the KHOALA cohort, a French population-based multicenter cohort of 878 patients with symptomatic knee and/or hip OA, aged between 40 and 75 years old. Baseline PA intensity (Metabolic Equivalent of Task, MET), frequency (times/week), duration (hours/week) and type (weight-bearing or not) were assessed by the Modifiable Activity Questionnaire. PF was measured with the WOMAC questionnaire at 5 years (higher scores = greater functional limitations).Skeletal muscle mass (grams) and fat mass (grams) were measured by dual X-ray absorptiometry (DXA) in 358 patients at 3 years. Fat mass index (kg/m2), appendicular fat mass (kg), % of fat mass, lean mass index (kg/m2), appendicular muscle mass (kg), skeletal muscle mass index (kg/m2or %) were calculated based on DXA data. Sarcopenia was defined according to the FNIH Sarcopenia Project recommendations.A causal mediation analysis was used to highlight the mediating role of BC variables. Bivariate analyses (multiple linear and logistic regressions) were performed to select the variables of interest. Separate generalized linear models were used to describe the relationships between PA components, PF and selected BC variables. Unadjusted and adjusted for baseline confounders (age, gender, number of comorbidities, disease duration, mental health and vitality scores) models were ran.Results:A 1-MET increase in baseline PA intensity was significantly associated with an improvement in PF at 5 years (-3 points). Weight-bearing PA was also significantly associated with better PF scores (-5 points).A 1-MET-increase in PA intensity at baseline was associated with a subsequent decrease at 3 years in fat mass index (-0.86 k/m2), an increase in skeletal muscle mass index (≥ 6%), and a decrease in % of fat mass (-2%). Non-weight-bearing PA was significantly associated with a decrease in fat mass index (-2.5 kg/m2).A 1-point increase in PF score was associated with a reduction in skeletal muscle mass index (calculated from body mass index, -0.3%) and an increase in skeletal muscle mass index (calculated from height, +3 kg/m2). The presence of sarcopenia was significantly associated with a degradation of PF (+7 points).Crude analyses indicated that 20.4% of the effect of baseline PA intensity on PF scores at 5 years was mediated by skeletal muscle mass index (calculated from height), 23.2% by fat mass index and 26.6% by % of fat mass. Similarly, 19.3% of the effect of baseline PA type on PF scores at 5 years was mediated by fat mass index and 15.1% by % of fat mass. After adjustment, we found no longer evidence of a mediating role of BC variables in these associations.Conclusion:We found significant associations between a 1-MET increase in PA intensity, weight-bearing PA at baseline and improvement in PF at 5 years, without any mediating role of BC variables. Further studies are needed to better understand the factors involved in these associations, especially psychosocial variables.Disclosure of Interests:Maud Wieczorek: None declared, Christine Rotonda: None declared, Jérémie SELLAM: None declared, Francis Guillemin Grant/research support from: Francis Guillemin received a grant from Expanscience paid to his institution., Anne-Christine Rat: None declared
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Dziadkowiak E, Ejma M, Wieczorek M, Pec P, Slotwinski K, Budrewicz S, Zimny A, Koszewicz M. The assessment of sensory pathway in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lognonné P, Banerdt WB, Giardini D, Pike WT, Christensen U, Laudet P, de Raucourt S, Zweifel P, Calcutt S, Bierwirth M, Hurst KJ, Ijpelaan F, Umland JW, Llorca-Cejudo R, Larson SA, Garcia RF, Kedar S, Knapmeyer-Endrun B, Mimoun D, Mocquet A, Panning MP, Weber RC, Sylvestre-Baron A, Pont G, Verdier N, Kerjean L, Facto LJ, Gharakanian V, Feldman JE, Hoffman TL, Klein DB, Klein K, Onufer NP, Paredes-Garcia J, Petkov MP, Willis JR, Smrekar SE, Drilleau M, Gabsi T, Nebut T, Robert O, Tillier S, Moreau C, Parise M, Aveni G, Ben Charef S, Bennour Y, Camus T, Dandonneau PA, Desfoux C, Lecomte B, Pot O, Revuz P, Mance D, tenPierick J, Bowles NE, Charalambous C, Delahunty AK, Hurley J, Irshad R, Liu H, Mukherjee AG, Standley IM, Stott AE, Temple J, Warren T, Eberhardt M, Kramer A, Kühne W, Miettinen EP, Monecke M, Aicardi C, André M, Baroukh J, Borrien A, Bouisset A, Boutte P, Brethomé K, Brysbaert C, Carlier T, Deleuze M, Desmarres JM, Dilhan D, Doucet C, Faye D, Faye-Refalo N, Gonzalez R, Imbert C, Larigauderie C, Locatelli E, Luno L, Meyer JR, Mialhe F, Mouret JM, Nonon M, Pahn Y, Paillet A, Pasquier P, Perez G, Perez R, Perrin L, Pouilloux B, Rosak A, Savin de Larclause I, Sicre J, Sodki M, Toulemont N, Vella B, Yana C, Alibay F, Avalos OM, Balzer MA, Bhandari P, Blanco E, Bone BD, Bousman JC, Bruneau P, Calef FJ, Calvet RJ, D’Agostino SA, de los Santos G, Deen RG, Denise RW, Ervin J, Ferraro NW, Gengl HE, Grinblat F, Hernandez D, Hetzel M, Johnson ME, Khachikyan L, Lin JY, Madzunkov SM, Marshall SL, Mikellides IG, Miller EA, Raff W, Singer JE, Sunday CM, Villalvazo JF, Wallace MC, Banfield D, Rodriguez-Manfredi JA, Russell CT, Trebi-Ollennu A, Maki JN, Beucler E, Böse M, Bonjour C, Berenguer JL, Ceylan S, Clinton J, Conejero V, Daubar I, Dehant V, Delage P, Euchner F, Estève I, Fayon L, Ferraioli L, Johnson CL, Gagnepain-Beyneix J, Golombek M, Khan A, Kawamura T, Kenda B, Labrot P, Murdoch N, Pardo C, Perrin C, Pou L, Sauron A, Savoie D, Stähler S, Stutzmann E, Teanby NA, Tromp J, van Driel M, Wieczorek M, Widmer-Schnidrig R, Wookey J. SEIS: Insight's Seismic Experiment for Internal Structure of Mars. SPACE SCIENCE REVIEWS 2019; 215:12. [PMID: 30880848 PMCID: PMC6394762 DOI: 10.1007/s11214-018-0574-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/29/2018] [Indexed: 05/23/2023]
Abstract
UNLABELLED By the end of 2018, 42 years after the landing of the two Viking seismometers on Mars, InSight will deploy onto Mars' surface the SEIS (Seismic Experiment for Internal Structure) instrument; a six-axes seismometer equipped with both a long-period three-axes Very Broad Band (VBB) instrument and a three-axes short-period (SP) instrument. These six sensors will cover a broad range of the seismic bandwidth, from 0.01 Hz to 50 Hz, with possible extension to longer periods. Data will be transmitted in the form of three continuous VBB components at 2 sample per second (sps), an estimation of the short period energy content from the SP at 1 sps and a continuous compound VBB/SP vertical axis at 10 sps. The continuous streams will be augmented by requested event data with sample rates from 20 to 100 sps. SEIS will improve upon the existing resolution of Viking's Mars seismic monitoring by a factor of ∼ 2500 at 1 Hz and ∼ 200 000 at 0.1 Hz. An additional major improvement is that, contrary to Viking, the seismometers will be deployed via a robotic arm directly onto Mars' surface and will be protected against temperature and wind by highly efficient thermal and wind shielding. Based on existing knowledge of Mars, it is reasonable to infer a moment magnitude detection threshold of M w ∼ 3 at 40 ∘ epicentral distance and a potential to detect several tens of quakes and about five impacts per year. In this paper, we first describe the science goals of the experiment and the rationale used to define its requirements. We then provide a detailed description of the hardware, from the sensors to the deployment system and associated performance, including transfer functions of the seismic sensors and temperature sensors. We conclude by describing the experiment ground segment, including data processing services, outreach and education networks and provide a description of the format to be used for future data distribution. ELECTRONIC SUPPLEMENTARY MATERIAL The online version of this article (10.1007/s11214-018-0574-6) contains supplementary material, which is available to authorized users.
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Skupinska M, Jesiotr M, Chrom P, Mroz A, Cierniak S, Winiarek M, Wyrwicz L, Pieczykolan J, Wieczorek M, Stanczak A, Bodnar L. The role of FGFR2 amplification and expression in patients with advanced or metastatic gastric cancer receiving fluoropyrimidine-based chemotherapy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kozak J, Paluch J, Kozak M, Kochana J, Wieczorek M, Kościelniak P. Novel Simultaneous Determination of Calcium and Magnesium Based on Flow Injection Gradient Titration. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1417418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wieczorek M, Rotonda C, Guillemin F, Rat AC. Trajectories of pain, physical function and physical activity components in patients with symptomatic knee and hip osteoarthritis: A group-based multi-trajectory approach. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Omorou A, Achit H, Wieczorek M, Pouchot J, Fautrel B, Rat AC, Guillemin F. Effet causal des comorbidités et de l’atteinte fonctionnelle sur la réduction de l’utilité à cinq ans dans l’arthrose des membres inférieurs : application de la G-formula aux données de la cohorte KHOALA. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.03.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Wieczorek M, Rat AC, Guillemin F, Rotonda C. Trajectoires de douleur et de fonction physique chez des patients atteints d’arthrose symptomatique de hanche et de genou : résultats de la cohorte française KHOALA. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.03.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Chorostowska-Wynimko J, Skupinska M, Rozy A, Siewiera K, Szczepulska E, Langfort R, Rudzinski P, Orlowski T, Wieczorek M, Stanczak A. P3.02-051 Low Consistency Between FGFR1 Gene Amplification and Protein Expression in Squamous Cell Lung Cancer (SQCLC). J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Stanczak A, Górnicka A, Stypik B, Mroczkiewicz M, Pieczykolan J, Dubiel K, Wieczorek M. Design and development of potent E1 ubiquitin activating enzyme inhibitor, CPL-410-005, as novel anticancer therapy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx367.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sharma Y, Schaff F, Wieczorek M, Pfeiffer F, Lasser T. Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT). Sci Rep 2017; 7:3195. [PMID: 28600544 PMCID: PMC5466688 DOI: 10.1038/s41598-017-03329-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 04/26/2017] [Indexed: 11/23/2022] Open
Abstract
Anisotropic X-ray Dark-field Tomography (AXDT) is a new imaging technique for reconstructing the three-dimensional scattering profile within a sample using the dark-field signal measured in an X-ray grating interferometry setup. As in any tomographic measurement, the acquisition geometry plays a key role in the accurate reconstruction of the scattering information. More- over, the anisotropic nature of the dark-field signal poses additional challenges for designing the acquisition protocols. In this work, we present an efficient approach to measure scattering orientations spread over the unit sphere and prove its efficacy using the knowledge from conventional tomography. In addition, we conclude (using analytical and experimental results) that placing the gratings such that the grating bars make an angle of 45 degrees with respect to the vertical direction is the optimal setup configuration for AXDT.
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Paluch J, Kozak J, Wieczorek M, Kozak M, Kochana J, Widurek K, Konieczna M, Kościelniak P. Novel approach to two-component speciation analysis. Spectrophotometric flow-based determinations of Fe(II)/Fe(III) and Cr(III)/Cr(VI). Talanta 2017; 171:275-282. [PMID: 28551141 DOI: 10.1016/j.talanta.2017.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 05/02/2017] [Indexed: 10/19/2022]
Abstract
The proposed approach to two-component speciation analysis relies on simultaneous application of two calibration methods to determination of two different forms of an analyte. One form is determined in extrapolative way, whereas the second form is determined in interpolative way, with the use of the same calibration graph, after appropriate chemical treatment, e.g. oxidation or reduction. The applicability of the approach has been verified on the examples of spectrophotometric determinations of Fe(II)/Fe(III) and Cr(VI)/Cr(III) using 1,10-phenanthroline and 1,5-diphenylcarbazide methods, respectively. In the above methods, ascorbic acid and Ce(IV) have been used to reduce Fe(III) to Fe(II) and to oxidize Cr(III) to Cr(VI), respectively. Lab-In-Syringe and SIA systems (for determination of iron and chromium species, respectively) have been applied to make the implementation of the proposed approach more convenient. The approach was verified on the example of determination of the analytes in synthetic and certified reference materials of ground and waste water samples. Using the developed methods, Fe(II)/Fe(III) and Cr(VI)/Cr(III) were determined within the concentration ranges of 0.06-4.0/0.06-3.0 and 0.03-0.5/0.05-7.0mgL-1, with precision (RSD, %) less than 3.8/2.0 and 2.2/6.0, and accuracy (RE, %) better than 2.9/4.3 and 6.8/5.2, respectively. The detection limits (mgL-1) are 0.02/0.02 and 0.01/0.02 for determination of both forms of iron and chromium, respectively. The applicability of the approach has been checked by analysis of artesian water (Fe(II)/Fe(III)) and post-production waste samples (Cr(III)/Cr(VI)).
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Omorou A, Achit H, Wieczorek M, Fautrel B, Rat A, Guillemin F. L’atteinte fonctionnelle ou les comorbidités : quel facteur est déterminant du changement d’utilité à 5 ans dans l’arthrose des membres inférieurs ? Rev Epidemiol Sante Publique 2017. [DOI: 10.1016/j.respe.2017.03.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Wieczorek M, Rotonda C, Guillemin F, Rat AC. Version électronique du questionnaire OAKHQOL : une alternative pratique et valide pour mesurer la qualité de vie des patients atteints d’arthrose du genou. Rev Epidemiol Sante Publique 2017. [DOI: 10.1016/j.respe.2016.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Wieczorek M, Schaff F, Pfeiffer F, Lasser T. Anisotropic X-Ray Dark-Field Tomography: A Continuous Model and its Discretization. PHYSICAL REVIEW LETTERS 2016; 117:158101. [PMID: 27768366 DOI: 10.1103/physrevlett.117.158101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Indexed: 06/06/2023]
Abstract
The x-ray dark-field signal measured in grating interferometers is anisotropic, depending on both the beam direction and the grating orientation with respect to the sample. We present a novel general closed-form, continuous forward model of the anisotropic dark-field signal. Furthermore, we derive a discretization using spherical harmonics, leading to a large-scale linear inverse problem. We present first experimental results of a wooden sample, demonstrating marked advantages over previous results, in particular, the resolution of multiple scattering directions in one volume element.
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