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Ghanem AI, Gilbert M, Keller C, Gardner G, Mayerhoff R, Siddiqui F. Definitive and Salvage Radiotherapy Compared to Other Modalities for Laryngeal Carcinoma in Situ. Int J Radiat Oncol Biol Phys 2023; 117:e583. [PMID: 37785769 DOI: 10.1016/j.ijrobp.2023.06.2519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) We sought to analyze survival endpoints for laryngeal carcinoma in situ (CIS) undergoing definitive radiotherapy (RT) compared to other modalities. MATERIALS/METHODS Usingour prospectively maintained head and neck cancer database, we identified laryngeal CIS patients treated between 6/2001 and 12/2021. We excluded low-grade dysplasia, CIS with any synchronous invasive squamous cell carcinoma (SCC) within 3 months of the initial CIS biopsy and cases with inadequate follow up. Patients were offered either definitive RT, CO2/KTP laser ablation, photodynamic therapy (PDT) or any sort of therapeutic excision. After first line treatment, follow-up includes visits every 3-6 months with laryngoscopy and biopsies as appropriate. For recurrent CIS beyond 6 months of first line treatment, we reported salvage therapies received and long-term outcomes were reported. Using Kaplan-Meier curves and log-rank test we investigated recurrence free (RFS), progression to invasive SCC free (IFS) and overall (OS) survival across treatment groups. Patients managed with salvage RT were compared to first line RT recipients. RESULTS Atotal of 85 CIS cases were included: median age 65 years (IQR: 55-74), 73 males (85%) and 70 white (82.4%). 86% had a history of smoking with median pack year of 38 (IQR: 20-55) and 66% had a history of alcohol use. CIS was glottic in most of the cases (90.6%: 66% unilateral, 21% bilateral & 13% involved commissure); with only 9.4% in the supraglottic region. RT was used in 49.4% (n = 42) after biopsy (55%) or surgery (45%) with median dose of 63 Gy/28 fractions, mainly by 3D conformal RT (76%). The remaining 50.6% (n = 43) got therapeutic excision alone (commonly microflap excision) (46.5%), CO2/KTP laser (32.6%) or PDT (20.9%). Demographics and clinicopathological details were non-different between RT and non-RT patients except for Charlson comorbidity index: median 2 (IQR 1-3) in non-RT vs 1 (IQR 0-2) in 1ry RT; p = 0.007. After a median follow-up of 4.8 years (IQR 3.5), 51.8% had recurrent disease, 21.2% progressed to invasive SCC and 9.4% had laryngectomies mainly for invasive SCC after RT. First line RT had improved 2-(83% vs 39%) and 5-(74% vs 22%) year RFS vs non-RT therapies (p<0.001). Nevertheless, 2- and 5-year IFS (89% vs 98% and 80% vs 79%) and OS (92% vs 93% and 81% vs 77%) were non-significant among both (p>0.05 for all). Among non-RT cases with CIS recurrences, 12/35 (34%) had salvage RT. Following RT, salvage RT patients had similar 2- and 5-year RFS (81% vs 83% and 81% vs 74%) and IFS (81% vs 89% and 81% vs 80%) compared to first line RT (p>0.05 for all). All cases with CIS recurrences were salvaged successfully with 100% living with no CIS at latest follow-up. CONCLUSION Laryngeal CIS can be treated with a wide range of modalities including 1ry RT which has better recurrence free survival. Nevertheless, non-RT recurrent CIS can be salvaged successfully with many options including RT with equivalent long-term results.
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Affiliation(s)
- A I Ghanem
- Department of Radiation Oncology, Henry Ford Cancer Institute, Detroit, MI; Alexandria Clinical Oncology Department, Alexandria University, Alexandria, Egypt
| | - M Gilbert
- Department of Radiation Oncology, Henry Ford Cancer Institute, Detroit, MI
| | - C Keller
- Department of Pathology and Laboratory Medicine, Henry Ford Health System, Detroit, MI
| | - G Gardner
- Department of Otolaryngology, Henry Ford Cancer Institute, Detroit, MI
| | - R Mayerhoff
- Department of Otolaryngology, Henry Ford Cancer Institute, Detroit, MI
| | - F Siddiqui
- Department of Radiation Oncology, Henry Ford Cancer Institute, Detroit, MI
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Lynn J, Malik T, Keller C, Lang A, Rana A. Allograft Discard Risk Index for Pediatric Heart Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.616] [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: 04/05/2023] Open
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Mallea J, Kon Z, Brown A, Hartwig M, Sanchez P, Keller C, Erasmus D, Dilling D, D'Cunha J, Roberts M, Sketch M, Johnson D, McCurry K. Utilization and Outcomes with Single Lung Transplantation Following Ex Vivo Lung Perfusion Using a Centralized Lung Evaluation System at a Dedicated Facility. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1443] [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: 04/05/2023] Open
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Austruy A, Roulier M, Angeletti B, Dron J, Dauphin CE, Ambrosi JP, Keller C, Chamaret P. Concentrations and transportation of metal and organochlorine pollutants in vegetables and risk assessment of human exposure in rural, urban and industrial environments (Bouches-du-Rhône, France). Environ Sci Pollut Res Int 2021; 28:64253-64267. [PMID: 34302251 DOI: 10.1007/s11356-021-14604-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/24/2021] [Indexed: 06/13/2023]
Abstract
The bioaccumulation of metals (As, Cd, Co, Cr, Cu, Ni, Pb, Sb, V, Zn, Al, Fe) and organochlorine compounds (PCDD-Fs and PCBs) was assessed in soils and vegetables of 3 sites of contrasted anthropogenic influence (rural and industrial-urban areas). Cultivated soils in industrial areas exhibited diffuse pollution in organochlorine pollutants (PCBs and PCDD-Fs). The pollutant levels encountered in vegetables were always lower than the EU regulatory or recommended values. However, the contents measured in vegetables cultivated near industrialized areas were significantly higher than those observed in rural areas. This was notably the case for Co, Cd, Cr, Ni, Pb, V, NDL- and DL-PCB, PCDD, and PCDF. The leaf pathway appeared as the main absorption pathway for many contaminants. The results suggested that population exposure to pollutants was mainly caused by vegetable ingestion. In the vegetables and soils, the toxicity was mainly caused by the V, Co, Cd, and Pb contents to which can be added As and PCDD-Fs for soils. Therefore, the proximity of vegetable crops to highly anthropised areas has led to long-term exposure of vegetables and soils to air pollutants, leading to an accumulation in the food chain and thus a risk for human health.
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Affiliation(s)
- Annabelle Austruy
- Institut Ecocitoyen pour la Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France.
| | - Marine Roulier
- Institut Ecocitoyen pour la Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
| | - Bernard Angeletti
- CEREGE, Aix-Marseille Univ, CNRS, IRD, Coll de France, INRA, Technopole de l'Arbois, BP80, 13545, Aix-en-Provence, France
| | - Julien Dron
- Institut Ecocitoyen pour la Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
| | - Charles-Enzo Dauphin
- Institut Ecocitoyen pour la Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
| | - Jean-Paul Ambrosi
- CEREGE, Aix-Marseille Univ, CNRS, IRD, Coll de France, INRA, Technopole de l'Arbois, BP80, 13545, Aix-en-Provence, France
| | - Catherine Keller
- CEREGE, Aix-Marseille Univ, CNRS, IRD, Coll de France, INRA, Technopole de l'Arbois, BP80, 13545, Aix-en-Provence, France
| | - Philippe Chamaret
- Institut Ecocitoyen pour la Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
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Pons ML, Collin B, Doelsch E, Chaurand P, Fehlauer T, Levard C, Keller C, Rose J. X-ray absorption spectroscopy evidence of sulfur-bound cadmium in the Cd-hyperaccumulator Solanum nigrum and the non-accumulator Solanum melongena. Environ Pollut 2021; 279:116897. [PMID: 33774364 DOI: 10.1016/j.envpol.2021.116897] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
It has been proposed that non-protein thiols and organic acids play a major role in cadmium phytoavailability and distribution in plants. In the Cd-hyperaccumulator Solanum nigrum and non-accumulator Solanum melongena, the role of these organic ligands in the accumulation and detoxification mechanisms of Cd are debated. In this study, we used X-ray absorption spectroscopy to investigate Cd speciation in these plants (roots, stem, leaves) and in the soils used for their culture to unravel the plants responses to Cd exposure. The results show that Cd in the 100 mg kg-1 Cd-doped clayey loam soil is sorbed onto iron oxyhydroxides. In both S. nigrum and S. melongena, Cd in roots and fresh leaves is mainly bound to thiol ligands, with a small contribution of inorganic S ligands in S. nigrum leaves. We interpret the Cd binding to sulfur ligands as detoxification mechanisms, possibly involving the sequestration of Cd complexed with glutathione or phytochelatins in the plant vacuoles. In the stems, results show an increase binding of Cd to -O ligands (>50% for S. nigrum). We suggest that Cd is partly complexed by organic acids for transportation in the sap.
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Affiliation(s)
- Marie-Laure Pons
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France.
| | - Blanche Collin
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Emmanuel Doelsch
- CIRAD, UPR Recyclage et Risque, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
| | - Perrine Chaurand
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Till Fehlauer
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Clément Levard
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Catherine Keller
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Jérôme Rose
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
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Mehra A, Keller C, Zhang T, Tosca N, McLennan S, Sperling E, Farrell U, Brocks J, Canfield D, Cole D, Crockford P, Cui H, Dahl T, Dewing K, Emmings J, Gaines R, Gibson T, Gilleaudeau G, Guilbaud R, Hodgkiss M, Jarrett A, Kabanov P, Kunzmann M, Li C, Loydell D, Lu X, Miller A, Mills N, Mouro L, O’Connell B, Peters S, Poulton S, Ritzer S, Smith E, Wilby P, Woltz C, Strauss J. Curation and Analysis of Global Sedimentary Geochemical Data to Inform Earth History. ACTA ACUST UNITED AC 2021. [DOI: 10.1130/gsatg484a.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
OBJECTIVE This study aimed to identify characteristics of women at risk of undiagnosed type 2 diabetes mellitus (T2DM) that fail to receive early pregnancy screening. STUDY DESIGN This was a retrospective case-control study of at-risk women who initiated care at the University of North Carolina at Chapel Hill at <21 weeks from January 2015 to December 2015. In 2013, the American College of Obstetricians and Gynecologists and the American Diabetes Association recommended women with prior GDM, glucose intolerance, or body mass index (BMI) ≥ 30 kg/m2 receive early pregnancy screening for undiagnosed T2DM. We defined early screening as 1-hour 50-g glucose challenge test or hemoglobin A1c at <21 weeks' gestation. Cases were women who did not have early screening, and controls were women who did. Modified Poisson regression with robust error variance estimated relative risks of factors associated with missed early screening. RESULTS Of the 1,932 women who initiated care at <21 weeks, 257 (13%) women were at risk of undiagnosed T2DM and, thus, candidates for early screening. However, 129 (50.2%) women were not screened. Higher BMI and prior GDM were associated with a lower relative risk of missed screening. CONCLUSION Higher BMI and prior GDM increased the likelihood of early diabetes screening, but only half of at-risk women were screened. Provider education and best practice alert systems are needed to increase screening for undiagnosed T2DM.
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Affiliation(s)
- Ashley N Battarbee
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Maximiliano Cavallini
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Catherine Keller
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Kim A Boggess
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
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Hasnaoui SE, Fahr M, Keller C, Levard C, Angeletti B, Chaurand P, Triqui ZEA, Guedira A, Rhazi L, Colin F, Smouni A. Screening of Native Plants Growing on a Pb/Zn Mining Area in Eastern Morocco: Perspectives for Phytoremediation. Plants (Basel) 2020; 9:E1458. [PMID: 33137928 PMCID: PMC7693513 DOI: 10.3390/plants9111458] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023]
Abstract
Screening of native plant species from mining sites can lead to identify suitable plants for phytoremediation approaches. In this study, we assayed heavy metals tolerance and accumulation in native and dominant plants growing on abandoned Pb/Zn mining site in eastern Morocco. Soil samples and native plants were collected and analyzed for As, Cd, Cu, Ni, Sb, Pb, and Zn concentrations. Bioconcentration factor (BCF), translocation factor (TF), and biological accumulation coefficient (BAC) were determined for each element. Our results showed that soils present low organic matter content combined with high levels of heavy metals especially Pb and Zn due to past extraction activities. Native and dominant plants sampled in these areas were classified into 14 species and eight families. Principal components analysis separated Artemisia herba-alba with high concentrations of As, Cd, Cu, Ni, and Pb in shoots from other species. Four plant species, namely, Reseda alba, Cistus libanotis, Stipa tenacissima, and Artemisia herba-alba showed strong capacity to tolerate and hyperaccumulate heavy metals, especially Pb, in their tissues. According to BCF, TF, and BAC, these plant species could be used as effective plants for Pb phytoextraction. Stipa tenacissima and Artemisia herba-alba are better suited for phytostabilization of Cd/Cu and Cu/Zn, respectively. Our study shows that several spontaneous and native plants growing on Pb/Zn contaminated sites have a good potential for developing heavy metals phytoremediation strategies.
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Affiliation(s)
- Said El Hasnaoui
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco; (S.E.H.); (Z.E.A.T.); (A.G.)
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
| | - Mouna Fahr
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco; (S.E.H.); (Z.E.A.T.); (A.G.)
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
| | - Catherine Keller
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
- Aix Marseille Univ., CNRS, IRD, INRAE, Collège de France, CEREGE, 13100 Aix-en-Provence, France
| | - Clément Levard
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
- Aix Marseille Univ., CNRS, IRD, INRAE, Collège de France, CEREGE, 13100 Aix-en-Provence, France
| | - Bernard Angeletti
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
- Aix Marseille Univ., CNRS, IRD, INRAE, Collège de France, CEREGE, 13100 Aix-en-Provence, France
| | - Perrine Chaurand
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
- Aix Marseille Univ., CNRS, IRD, INRAE, Collège de France, CEREGE, 13100 Aix-en-Provence, France
| | - Zine El Abidine Triqui
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco; (S.E.H.); (Z.E.A.T.); (A.G.)
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
| | - Abdelkarim Guedira
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco; (S.E.H.); (Z.E.A.T.); (A.G.)
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
| | - Laila Rhazi
- Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco;
| | - Fabrice Colin
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
- Aix Marseille Univ., CNRS, IRD, INRAE, Collège de France, CEREGE, 13100 Aix-en-Provence, France
| | - Abdelaziz Smouni
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco; (S.E.H.); (Z.E.A.T.); (A.G.)
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5/INAU, 10000 Rabat, Morocco; (C.K.); (C.L.); (B.A.); (P.C.); (F.C.)
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Abou Shaar R, Arora K, Keller C. Retinal Ependymoma: A Rare Extra-Axial Presentation. Am J Clin Pathol 2020. [DOI: 10.1093/ajcp/aqaa161.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction/Objective
Ependymomas are well-demarcated and slow-growing neuroepithelial neoplasms that comprise 3–9% of primary CNS tumors. The vast majority of ependymomas arise either intracranially, mostly in children, or in the spinal cord and are associated with ependymal lining. Histologic hallmarks are perivascular pseudorosettes, ependymal rosettes and alternating zones of nuclear crowding and nuclear free zones composed of coarse cell processes. In high grade ependymomas increased mitoses, necrosis and nuclear pleomorphism may be seen.
Methods
We present the case of a 63-year-old woman in with a past medical history of retinopathy of prematurity, glaucoma and right eye enucleation. She presented with a painful blind left eye refractory to medical treatment and subsequently underwent left eye enucleation.
Results
On histologic examination, an incidental retinal ependymoma was identified. The neoplastic cells were fusiform and had long coarsely fibrillar cell processes. Characteristic periodicity of nuclear crowding and scarcity was observed. In places, neoplastic cell processes extended radially to delicate and sometimes hyalinized blood vessels, forming so-called perivascular pseudorosettes. Definite ependymal rosettes were not recognized in the examined sections. Stigmata of chronicity were found, such as ischemic type necrosis, blood vessels with dystrophic calcifications and foci of ossification replete with fibroadipose tissue in the marrow spaces.
The neoplastic cells labeled with antibodies against glial fibrillary acidic protein (GFAP), thus confirming glial lineage in the neoplastic cell. Additionally, there was scattered intracytoplasmic expression of epithelial membrane antigen (EMA) in a dot-like or circular pattern. The latter is well described in ependymomas and often used to support the diagnosis.
Conclusion
Ependymomas rarely occur at extracranial sites, such as the chest, abdomen and pelvis. We are presenting the fourth case of retinal ependymoma reported in literature. The tumor had classical immunomorphologic findings.
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Affiliation(s)
- R Abou Shaar
- Pathology, Henry Ford Health System, Detroit, Michigan, UNITED STATES
| | - K Arora
- Pathology, Henry Ford Health System, Detroit, Michigan, UNITED STATES
| | - C Keller
- Pathology, Henry Ford Health System, Detroit, Michigan, UNITED STATES
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Field RI, Keller C, Louazel M. Can governments push providers to collaborate? A comparison of hospital network reforms in France and the United States. Health Policy 2020; 124:1100-1107. [DOI: 10.1016/j.healthpol.2020.07.003] [Citation(s) in RCA: 1] [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] [Received: 09/13/2019] [Revised: 06/12/2020] [Accepted: 07/09/2020] [Indexed: 10/23/2022]
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Fourrier C, Luglia M, Hennebert P, Foulon J, Ambrosi JP, Angeletti B, Keller C, Criquet S. Effects of increasing concentrations of unamended and gypsum modified bauxite residues on soil microbial community functions and structure - A mesocosm study. Ecotoxicol Environ Saf 2020; 201:110847. [PMID: 32554203 DOI: 10.1016/j.ecoenv.2020.110847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 04/11/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
Bauxite residues (BR), commonly named red muds, are the saline-sodic waste produced during the extraction of alumina from bauxite. In this study, four kinds of BR were mixed at increasing concentrations with two soils in a mesososm experiment. Unamended BR from Provence (PRO) and Guinea (GUI) bauxite were selected, and Modified Bauxite Residues from PRO and GUI (MBR-PRO and MBR-GUI) were obtained by gypsum application and repeated leaching, in order to reduce their pH, electrical conductivity (EC) and exchangeable sodium percentage (ESP). Several indicators of microbial community functions and structure (growth of culturable bacteria; enzymatic activities; C-sourced substrates degradation (Biolog®); bacteria and fungi PCR-RFLP fingerprints) were measured after 35 days of incubation. Results showed that PRO residue had stronger negative effects than GUI on all the tested indicators. Residues modified by gypsum addition (MBR-PRO, MBR-GUI) were equally or sometimes less harmful compared to unamended residues. Microbial activities (bacterial growth and enzyme activities) were more inhibited than the diversity of microbial functions (Biolog®), and the structure of bacterial and fungal communities was not affected by increasing concentrations of bauxite residues. EC and ESP were the main factors explaining the inhibition of microbial activities, although the origin of bauxite residue is of great importance too.
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Affiliation(s)
- Camille Fourrier
- Aix-Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France.
| | - Mathieu Luglia
- Aix-Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France.
| | - Pierre Hennebert
- INERIS (French National Institute for Industrial Environment and Risks), BP 2, F-60550, Verneuil-en-Halatte, France.
| | - Julie Foulon
- Aix-Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France.
| | - Jean-Paul Ambrosi
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, Aix en Provence, France.
| | - Bernard Angeletti
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, Aix en Provence, France.
| | - Catherine Keller
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, Aix en Provence, France.
| | - Stéven Criquet
- Aix-Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France.
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Lamp A, Rasmussen I, Soriano-Smith R, Keller C, Basiarz E, Belenky G. 0255 Comparing Performance, Fatigue and Sleepiness Between Short-Haul And Ultra Long-Haul Commercial Airline Operations. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Safety performance indicators (SPIs) are used in aviation to determine if a trip that is non-compliant with federal regulations is safe to fly. Exemptions to regulations can be granted if a safety case demonstrates that the SPIs for an alternative means of compliance (AMOC; i.e., a trip outside regulations) are non-inferior to SPIs for a safety standard operation (SSO; i.e. a trip compliant with regulations). Through this process, it has previously been suggested that ultra-long-range flights are non-inferior to long-range flights due to increased sleep opportunity. We determined whether SPIs for non-compliant ultra-long-range (ULR) trips are non-inferior to those for compliant short-haul (SH) trips.
Methods
Performance, fatigue, and sleepiness were assessed at the top of descent (TOD) of flight segments using the Psychomotor Vigilance Task (PVT), Samn-Perelli (SP) fatigue scale, and Karolinska Sleepiness Scale (KSS), respectively. Data were analyzed using non-inferiority testing. Two different ULR trips with different TOD times (ULR trip 1: n=81; ULR trip 2: n=22) were compared to two types of SH trips, including one trip that contained one or more all-night flights (SH trip 1: n=48) and one trip with zero all-night flights (SH trip 2: n=47).
Results
Non-inferiority was found for the SPIs at most comparison points. For example, comparing the SPIs for ULR trip 2 and SH trip 1 at final TOD, non-inferiority was found for all SPIs. In contrast, comparing the SPIs for ULR trip 1 and SH trip 1 at final TOD, non-inferiority was found for SP and KSS, while non-inferiority for PVT was only suggested.
Conclusion
The findings suggest that the AMOC trips are as safe as or safer than the compliant SH trips. This raises questions regarding the structure of SH trips and how differences in the structures play a role in performance, fatigue and sleepiness.
Support
United Airlines
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Affiliation(s)
- A Lamp
- Washington State University - Spokane, Spokane, WA
| | - I Rasmussen
- Washington State University - Spokane, Spokane, WA
| | | | - C Keller
- Washington State University - Spokane, Spokane, WA
| | - E Basiarz
- Washington State University - Spokane, Spokane, WA
| | - G Belenky
- Washington State University - Spokane, Spokane, WA
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13
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Lamp A, Soriano Smith RN, Rasmussen I, Keller C, Basiarz E, Belenky G. 0244 Examining Pilot Safety Performance Indicators at Critical Phases of Flight Across Multiple Flight Legs During Commercial Airline Trips. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Prior simulation and operational studies have started to address whether the number of consecutive flight segments negatively affects cognitive performance, fatigue, and sleepiness, without reaching a clear consensus. This study expands this literature by determining whether there are significant changes in cognitive performance, fatigue, and sleepiness at critical phases of flight across multiple flight segments, while accounting for the number of segments, flight direction, trip day, and time-of-day.
Methods
Fifty commercial airline pilots were studied. Each pilot flew two separate short-haul trips, each ranging from 1–4 days and 1–10 flight segments. Cognitive performance, fatigue, and sleepiness were assessed at top-of-climb (TOC) and top-of-descent (TOD) of each flight segment and each trip day. Cognitive performance, fatigue, and sleepiness were assessed using Psychomotor Vigilance Task (PVT) speed, Samn-Perelli (SP) ratings, and Karolinska Sleepiness Scale (KSS) ratings, respectively. Data were analyzed using Wilcoxon t-tests and verified using ANOVAs.
Results
Mean PVT speed (Cohen’s d =0.57), SP ratings (Cohen’s d = 0.73), and KSS ratings (Cohen’s d = 0.63) were significantly worse at TOD than TOC (p < 0.001); and, significantly varied across flight segments (p<0.001). Cognitive performance, fatigue, and sleepiness were consistently and significantly degraded around the fifth flight segment, improved around the sixth to eighth flights segments, and were subsequently degraded around the eighth to tenth flight segments.
Conclusion
The results indicate that cognitive performance, fatigue, and sleepiness vary across flight segments, trip day, and phase of flight. Results suggest that these safety performance indices degrade after five segments, and further degrade after eight flight segments. The results presented could be used to inform future airline scheduling and regulation.
Support
This work has been supported by United Airlines.
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Affiliation(s)
- A Lamp
- Washington State University, Spokane, WA
| | | | | | - C Keller
- Washington State University, Spokane, WA
| | - E Basiarz
- Washington State University, Spokane, WA
| | - G Belenky
- Washington State University, Spokane, WA
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14
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Barbieri R, Texier G, Keller C, Drancourt M. Soil salinity and aridity specify plague foci in the United States of America. Sci Rep 2020; 10:6186. [PMID: 32277139 PMCID: PMC7148359 DOI: 10.1038/s41598-020-63211-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 03/26/2020] [Indexed: 11/09/2022] Open
Abstract
Plague is a deadly zoonosis that periodically reemerges as small outbreaks in geographically limited foci where the causative agent Yersinia pestis may reside in soil. We analyzed a dataset of 1.005 carefully documented plague cases that were georeferenced over 113 years in peer-reviewed literature in the contiguous United States. Plotting outbreaks by counties defined as plague foci on geographical maps, we observed a significant co-localization of plague outbreaks with high soil salinity measured by an electric conductivity of >4 dS/ m-1 and aridity measured by an aridity index <0.5. Thus, we identified aridity and soil salinity as significantly associated with ecological risk factors for relapsing plague in the contiguous United States. These results reveal two evolutive parameters that are partially associated with anthropic activities, complicating the epidemiology of plague in the contiguous United States. Exploiting aridity and soil salinity data may help in the surveillance of evolving plague foci in the contiguous United States.
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Affiliation(s)
- Rémi Barbieri
- Aix-Marseille Univ., IRD, MEPHI, IHU Méditerranée Infection, Marseille, France.,Aix Marseille Univ., CNRS, EFS, ADES, Marseille, France
| | - Gaëtan Texier
- Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, dIHU-Méditerranée Infection, Marseille, France.,Centre d'épidémiologie et de santé publique des armées [CESPA], Marseille, France
| | - Catherine Keller
- Aix Marseille Univ., CNRS, IRD, INRAE, Coll. France, CEREGE, Aix-en-Provence, France
| | - Michel Drancourt
- Aix-Marseille Univ., IRD, MEPHI, IHU Méditerranée Infection, Marseille, France.
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15
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Gelly R, Fekiacova Z, Guihou A, Doelsch E, Deschamps P, Keller C. Lead, zinc, and copper redistributions in soils along a deposition gradient from emissions of a Pb-Ag smelter decommissioned 100 years ago. Sci Total Environ 2019; 665:502-512. [PMID: 30776621 DOI: 10.1016/j.scitotenv.2019.02.092] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/05/2019] [Accepted: 02/05/2019] [Indexed: 05/09/2023]
Abstract
Sourcing and understanding the fate of anthropogenic metals in a historical contamination context is challenging. Here we combined elemental and isotopic (Pb, Zn, Cu) analyses with X-ray Absorption Spectroscopy (XAS) measurements (Zn) to trace the fate, in undisturbed soil profiles, of historical metal contamination emitted by a 167-year-old Pb-Ag smelter decommissioned 100 years ago located in the Calanques National Park (Marseilles, France). Lead isotopic measurements show that entire soil profiles were affected by 74 years of Pb emissions up to ~7 km from the smelter under the main NNW wind, and indicate particulate transfer down to 0.8 m at depth. This vertical mobility of anthropogenic Pb contrasts with previous studies where Pb was immobilized in surface horizons. The contribution of anthropogenic Pb to the total Pb concentration in soil was estimated at 95% in surface horizons, and 78% in the deepest horizons. Zinc isotopic signatures of past emissions that are enriched in light isotopes compared to the natural geological background (-0.70 ± 0.04‰ and -0.15 ± 0.02‰, respectively), were detected only in the surface horizons of the studied soils. Using XAS analyses, we showed that anthropogenic Zn was transformed and immobilized in surface horizons as Zn-Layered Double Hydroxide, thus favoring the enrichment in heavy isotopes in these surface horizons. No clear evidence of copper contamination by the smelter was found and Cu isotopes point to a bedrock origin and a natural distribution of Cu concentrations.
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Affiliation(s)
- R Gelly
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP 80, F-13545 Aix-en-Provence, France.
| | - Z Fekiacova
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP 80, F-13545 Aix-en-Provence, France
| | - A Guihou
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP 80, F-13545 Aix-en-Provence, France
| | - E Doelsch
- CIRAD, UPR Recyclage et risque, F-34398 Montpellier, France Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
| | - P Deschamps
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP 80, F-13545 Aix-en-Provence, France
| | - C Keller
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP 80, F-13545 Aix-en-Provence, France
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16
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Austruy A, Yung L, Ambrosi JP, Girardclos O, Keller C, Angeletti B, Dron J, Chamaret P, Chalot M. Evaluation of historical atmospheric pollution in an industrial area by dendrochemical approaches. Chemosphere 2019; 220:116-126. [PMID: 30579948 DOI: 10.1016/j.chemosphere.2018.12.072] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/06/2018] [Accepted: 12/09/2018] [Indexed: 05/21/2023]
Abstract
We conducted a dendrochemical study in order to evaluate the exposure of territories and populations to different types of pollutants and to characterise the history of pollution in one of the most intensely industrialised areas of Europe: the industrial port zone of Fos, also heavily urbanised. To perform the study, two tree species have been selected, Pinus halepensis and Populus nigra, on a rural plot located roughly 20 km away from the industrial harbour, an urban plot located in the city of Fos-sur-Mer and an industrial plot. Our study indicated that poplar was a more relevant model for the dendrochemical studies, exhibiting a higher bioaccumulation capacity than pine except for Hg, Sb and Mn. Moreover, thanks to this work, we observed significant exposure of the trees in the urban and industrial areas to As, Cd, Co, Cu, Mo, Sb, Zn, Al, Ca, and Mg, highlighting the exposure of the territory and populations living in the vicinity of the industrial harbour. The temporal variability of the concentrations measured in the tree rings corresponds to the increasing industrialisation of the territory as well as to the evolution of the industrial processes. Thus, this project highlighted the exposure of the Gulf of Fos to atmospheric emissions (industrial, road and urban) of the industrial harbour as well as the changes over time. It also pointed out the relevance of using dendrochemistry to measure atmospheric exposure of metals and metalloids and its temporal variability.
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Affiliation(s)
- A Austruy
- Institut Ecocitoyen pour La Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France.
| | - L Yung
- Laboratoire Chrono-Environnement, UMR 6249, Université de Bourgogne Franche-Comté, Pôle Universitaire Du Pays de Montbéliard, 4 Place Tharradin, BP 71427, 25211, Montbéliard, France
| | - J P Ambrosi
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de L'Environnement Arbois-Méditerranée, BP80, 13545, Aix-en-Provence, France
| | - O Girardclos
- Laboratoire Chrono-Environnement, UMR 6249, Université de Bourgogne Franche-Comté, Pôle Universitaire Du Pays de Montbéliard, 4 Place Tharradin, BP 71427, 25211, Montbéliard, France
| | - C Keller
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de L'Environnement Arbois-Méditerranée, BP80, 13545, Aix-en-Provence, France
| | - B Angeletti
- Aix Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de L'Environnement Arbois-Méditerranée, BP80, 13545, Aix-en-Provence, France
| | - J Dron
- Institut Ecocitoyen pour La Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
| | - P Chamaret
- Institut Ecocitoyen pour La Connaissance des Pollutions - Centre de Vie La Fossette, RD 268, 13270, Fos-sur-Mer, France
| | - M Chalot
- Laboratoire Chrono-Environnement, UMR 6249, Université de Bourgogne Franche-Comté, Pôle Universitaire Du Pays de Montbéliard, 4 Place Tharradin, BP 71427, 25211, Montbéliard, France
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Abstract
The use of the classic laryngeal mask airway (classic LMA) in the prone position is controversial, but the ProSeal laryngeal mask airway (ProSeal LMA) maybe more suitable as it forms a better seal and provides access to the stomach. In the following retrospective audit, we describe our experience with the insertion of, and maintenance of anaesthesia with, the ProSeal LMA in 245 healthy adults in the prone position by experienced users. The technique involved (1) the patient adopting the prone position with the head to the side and the table tilted laterally; (2) preoxygenation to end-tidal oxygen >90%; (3) induction of anaesthesia with midazolam/alfentanil/propofol; (4) facemask ventilation (5) a single attempt at digital insertion and if unsuccessful a single attempt at laryngoscope-guided, gum elastic bougie-guided insertion; (6) gastric tube insertion; (7) maintenance of anaesthesia with sevoflurane/O2/N2O; (8) volume controlled ventilation at 8-12 ml/kg; (9) emergence from anaesthesia in the supine position; and (10) removal of the ProSeal LMA when awake. Facemask ventilation was always successful. ProSeal LMA insertion was successful in all patients: 237 with digital insertion and eight with bougie-guided insertion. Ventilation was successful in all patients. Gastric tube insertion was successful in all patients. Correctable partial airway obstruction occurred in three patients, but there was no hypoxia, hypercapnoea, displacement, regurgitation, gastric insufflation or airway reflex activation. Our findings suggest that the insertion of and maintenance of anaesthesia with the ProSeal LMA is feasible in the prone position by experienced users.
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Affiliation(s)
- J R Brimacombe
- James Cook University, Department of Anaesthesia and Intensive Care, Cairns Base Hospital, Cairns, Queensland, Australia
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18
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Stone T, Brimacombe J, Keller C, Kelley D, Clery G. Residual Protein Contamination of ProSeal™ Laryngeal Mask Airways after Two Washing Protocols. Anaesth Intensive Care 2019; 32:390-3. [PMID: 15264736 DOI: 10.1177/0310057x0403200315] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The risk of prion protein cross-infection has focussed attention on the potential hazards of protein contamination of re-usable medical devices. This study determined the frequency of protein contamination of ProSeal™ laryngeal mask airways (PLMA) after two cleaning procedures and tested the hypothesis that the combination of hand- and machine-washing removes protein contamination more effectively than hand-washing alone. After clinical use fifty-four PLMAs were randomly allocated to be washed by hand or by hand then machine. All PLMAs were then autoclaved at 134°C for 4 minutes. After processing, each PLMA was immersed in a 1.2% solution of erythrosin B and examined for uptake of stain. The site (outer surface, bowl and edges of the cuff, airway and drain tube, finger strap) and severity (nil/mild/moderate/severe) of staining was scored by a blinded observer. There were no differences in the site or severity of staining between the two cleaning procedures. Staining was detected on 89% of PLMAs that were hand-washed and 78% of PLMAs that were hand-, then machine-washed (P=0.27). When staining occurred, it was mild in 98%, moderate in 2% and was never severe. Staining was more frequent on the edge than at any other location (all comparisons: P≤0.01). The strap never had any staining. We conclude that residual contamination of PLMAs with protein deposits is common even when machine-washing is used to augment hand-washing before autoclaving. The infection risk associated with these deposits remains to be determined.
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Affiliation(s)
- T Stone
- Departments of Anaesthesia and Intensive Care, Cairns Base Hospital, James Cook University, Cairns, Queensland
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19
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Abstract
We tested the hypothesis that gum elastic-bougie-guided insertion of the ProSeal™ Laryngeal Mask Airway is more frequently successful than introducer tool guided insertion after failed digital insertion. One hundred anaesthetized patients (ASA 1-2, aged 18 to 80 years) were randomized for the second insertion attempt using either the gum elastic bougie-guided or introducer tool techniques. The bougie-guided technique involved priming the drain tube with the bougie, placing the bougie in the oesophagus using laryngoscope guidance, digital insertion along the palato-pharyngeal curve, and bougie removal. The introducer tool technique involved attaching the introducer tool, single-handed rotation along the palatopharyngeal curve, and introducer tool removal. Failed insertion was classified as (i) failed passage into the pharynx, (ii) malposition, or (iii) ineffective ventilation. Any blood staining was documented. Insertion was more frequently successful (50/50 vs 15/50, P=0.0002) and faster (35±17s vs 54±45s, mean±SD, P=0.006) with the bougie-guided technique. All failed insertions with the introducer tool technique were successful with the bougie-guided technique. The aetiology of failed insertion was similar for the digital and introducer tool techniques in 94% (33/35) of patients. There was no blood staining on the bougie, laryngoscope or introducer tool at removal, but blood staining was more common on the Proseal laryngeal mask airway with the introducer tool technique (9/50 vs 2/50, P=0.03). We conclude that the gum elastic bougie-guided insertion has a higher success rate and causes less trauma than the insertion tool insertion technique after failed digital insertion of the Proseal Laryngeal Mask Airway.
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Affiliation(s)
- J Brimacombe
- Department of Anaesthesia and Intensive Care, Cairns Base Hospital, Cairns, Queensland
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20
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von Goedecke A, Brimacombe J, Keller C, Hoermann C, Loeckinger A, Rieder J, Kleinsasser A. Positive Pressure versus Pressure Support Ventilation at Different Levels of PEEP Using the ProSeal™ Laryngeal Mask Airway. Anaesth Intensive Care 2019; 32:804-8. [PMID: 15648991 DOI: 10.1177/0310057x0403200612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We compared positive pressure ventilation with pressure support ventilation at different levels of positive end expiratory pressure (PEEP) using the ProSeal laryngeal mask airway (PLMA). Forty-two anaesthetized adults (ASA 1-2, aged 19 to 63 years) underwent positive pressure ventilation and then pressure support ventilation each with PEEP set at 0, 5 and 10 cmH2O in random order. Pressure support ventilation was with the inspired tidal volume (VTInsp) set at 7 ml/kg and the respiratory rate adjusted to maintain the end-tidal CO2 (ETCO2) at 40 mmHg. Pressure support ventilation was with pressure support set at 5 cmH2O above PEEP and initiated when inspiration produced a 2 cmH2O reduction in airway pressure. Tidal volumes were similar during positive pressure and pressure support ventilation with PEEP, but were higher for the former without PEEP. Respiratory rate and peak inspiratory flow rate were higher during pressure support than positive pressure ventilation (all P<0.001). Peak airway pressure (Ppaw), mean airway pressure (Mpaw), peak expiratory flow rate, and expired airway resistance were lower during pressure support than positive pressure ventilation (all P<0.001). With PEEP set at 10 cmH2O, ETCO2 was lower for pressure support than positive pressure ventilation. During positive pressure ventilation, there was an increase in Ppaw, Mpaw and dynamic compliance (Cdyn) with increasing levels of PEEP (all P<0.01). During pressure support ventilation, there was an increase in inspired and expired tidal volume, Ppaw, peak inspiratory and expiratory flow rates and Cdyn, and a reduction in ETCO2, work of breathing, and expired airway resistance with increasing levels of PEEP (all P<0.01). There were no differences in SpO2, non-invasive mean arterial pressure, heart rate or leak fraction. We conclude that pressure support ventilation provides equally effective gas exchange as positive pressure ventilation during PLMA anaesthesia with or without PEEP at the tested settings. During pressure support, PEEP increases ventilation and reduces work on breathing without increasing leak fraction.
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Affiliation(s)
- A von Goedecke
- Department of Anesthesia and Intensive Care Medicine, Leopold-Franzens University, Innsbruck, Austria
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21
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Battarbee AN, Cavallini M, Keller C, Boggess K. 496: Missed opportunities for early screening of diabetes mellitus in pregnancy. Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2018.11.518] [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: 10/27/2022]
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22
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Lebbos N, Bou-Maroun E, Daou C, Ouaini R, Chebib H, Keller C, Afram M, Curmi P, Chagnon MC. Chemical analysis of metallic trace elements of toxicological concern in Lebanese pita and risk characterization for the consumers. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.791] [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: 11/28/2022]
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23
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Henner P, Brédoire F, Tailliez A, Coppin F, Pierrisnard S, Camilleri V, Keller C. Influence of root exudation of white lupine (Lupinus albus L.) on uranium phytoavailability in a naturally uranium-rich soil. J Environ Radioact 2018; 190-191:39-50. [PMID: 29751206 DOI: 10.1016/j.jenvrad.2018.04.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 04/26/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Mechanisms of uranium (U) transfer from soil to plants remain poorly understood. The kinetics of supply of U to the soil solution from solid phases could be a key point to understand its phytoavailability and implications for environmental risk assessment. Root activity, particularly the continuous release of organic acids in the rhizosphere, could have an effect on this supply. We tested the impact of citrate exudation by roots of Lupinus albus, either P-sufficient (P+) or P-deficient (P-), on the phytoavailability of U from a naturally contaminated soil (total content of 413 mg U kg-1) using a rhizotest design. Combined effects of P (P-/P+ used to modulate plant physiology) and citrate (model exudate) on the solubilization of U contained in the soils were tested in closed reactors (batch). The batch experiment showed the existence of a low U available pool (0.4% total U) and high accessibility (kd' around 20 L kg-1) which was not significantly affected by P treatment or citrate concentrations. Analysis of U, Fe, Ca, P and citrate concentrations in the batches suggested a complex combination of mechanisms and factors including desorption, resorption, precipitation, co-sorption. On rhizotest, L. albus plants extracted 0.5-0.75% of the total U and between 25 and 40% of the estimated available U present in the rhizotest in 5 days. Uranium accumulation at the whole plant level (20 mg U kg-1d.w., shoot to root ratio around 10-3) seemed to be dependent neither on the plant P nutrition status nor citrate exudation level, possibly in relation with the equivalent accessibility of U whatever the growth conditions. Yet differential translocation to shoots seemed to be positively correlated to citrate exudation.
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Affiliation(s)
- Pascale Henner
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Transfer Within Terrestrial Ecosystems (LR2T), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France.
| | - Félix Brédoire
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Transfer Within Terrestrial Ecosystems (LR2T), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France
| | - Antoine Tailliez
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Transfer Within Terrestrial Ecosystems (LR2T), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France
| | - Frédéric Coppin
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Transfer Within Terrestrial Ecosystems (LR2T), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France
| | - Sylvie Pierrisnard
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Transfer Within Terrestrial Ecosystems (LR2T), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France
| | - Virginie Camilleri
- Institute for Radioprotection and Nuclear Safety (IRSN/PSE-ENV/SRTE), Laboratory of Research on Radionuclides Effects on Ecosystems (LECO), Cadarache, Bat 183, BP 3, 13115 Saint Paul-lez-Durance, France
| | - Catherine Keller
- Aix Marseille Univ, CNRS, IRD, INRA, Coll France, CEREGE, BP 80, 13545 Aix-en-Provence Cedex 04, France
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Murphy EP, Dobson AD, Keller C, Conneely OM. Differential regulation of transcription by the NURR1/NUR77 subfamily of nuclear transcription factors. Gene Expr 2018; 5:169-79. [PMID: 8882640 PMCID: PMC6138016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
NURR1 is an orphan member of the nuclear receptor superfamily of transcription factors that shares close sequence homology to the orphan nuclear receptor and immediate early gene product NUR77(NGF1 beta). The physiological role of NURR1 has not been established in mammalian cells. However, the observation that NURR1 and NUR77 interact with at least one common enhancer element (AAAAGGTCA), together with their partly overlapping but differential expression patterns in mammalian tissues, suggests that these proteins may have both shared and independent transcription regulatory functions. To identify potential target genes that may be regulated by NURR1, we analyzed its DNA binding properties to potential cis-acting enhancer elements. Using point mutagenesis of the AAAAGGTCA motif, we have identified three additional sequences that bind specifically to both NURR1 and NUR77, one of which serves as a functional enhancer element. Comparative analysis of the transcription regulatory properties of NURR1 and NUR77 indicates that the proteins can display opposing transregulatory activities that are influenced by the specific cis-acting sequences to which they bind. Our results indicate that the transcriptional responses of specific target genes to the NURR1/NUR77 subfamily may be differentially regulated by the relative cellular levels of NURR1 and NUR77 and influenced by the specific enhancer sequences that mediate their activity. Finally, we have identified several potential target genes of neuronal and neuroendocrine origin whose promoters contain this element.
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Affiliation(s)
- E P Murphy
- Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA
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Keller C, Wenker C, Jermann T, Hirschi R, Schildger B, Meier R, Schmidt-Posthaus H. Piscine mycobacteriosis - Involvement of bacterial species and reflection in pathology. SCHWEIZ ARCH TIERH 2018; 160:385-393. [PMID: 29905162 DOI: 10.17236/sat00165] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 11/06/2022]
Abstract
INTRODUCTION Piscine mycobacteriosis is a lethal disease with zoonotic potential, found worldwide in both fresh and marine fish. More than 20 strains of Mycobacterium spp. are known to persist in fish so far, but the pathogenicity is currently unknown for most of them. However, M. marinum is reported as one of the most pathogenic agents for fish and is involved in zoonotic cases. We examined 47 different cases from two zoological gardens, where fish tuberculosis was identified or previously suspected during the last ten years. We collected PCR and sequencing data, which were then compared to previously collected clinical data and pathology. The clinical signs caused by Mycobacterium spp. were similar in all the cases, except for cases infected by M. marinum, which lacked the presence of skin lesions. Lesions seen in histology caused by M. marinum tended to be more acute and severe compared lesions caused by other Mycobacterium spp. The majority of M. marinum cases have been reported within marine fish. In contrast to previous studies we detected this species to be the predominant bacteria present within freshwater fish. Interestingly, we detected M. holsaticum in one of the seawater systems used in this project, being the first report of this Mycobacterium species shown to be present in a fish.
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Affiliation(s)
- C Keller
- Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern
| | | | | | - R Hirschi
- Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern
| | | | | | - H Schmidt-Posthaus
- Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern
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Nyström ME, Karltun J, Keller C, Andersson Gäre B. Collaborative and partnership research for improvement of health and social services: researcher's experiences from 20 projects. Health Res Policy Syst 2018; 16:46. [PMID: 29843735 PMCID: PMC5975592 DOI: 10.1186/s12961-018-0322-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 05/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Getting research into policy and practice in healthcare is a recognised, world-wide concern. As an attempt to bridge the gap between research and practice, research funders are requesting more interdisciplinary and collaborative research, while actual experiences of such processes have been less studied. Accordingly, the purpose of this study was to gain more knowledge on the interdisciplinary, collaborative and partnership research process by investigating researchers' experiences of and approaches to the process, based on their participation in an inventive national research programme. The programme aimed to boost collaborative and partnership research and build learning structures, while improving ways to lead, manage and develop practices in Swedish health and social services. METHODS Interviews conducted with project leaders and/or lead researchers and documentation from 20 projects were analysed using directed and conventional content analysis. RESULTS Collaborative approaches were achieved by design, e.g. action research, or by involving practitioners from several levels of the healthcare system in various parts of the research process. The use of dual roles as researcher/clinician or practitioner/PhD student or the use of education designed especially for practitioners or 'student researchers' were other approaches. The collaborative process constituted the area for the main lessons learned as well as the main problems. Difficulties concerned handling complexity and conflicts between different expectations and demands in the practitioner's and researcher's contexts, and dealing with human resource issues and group interactions when forming collaborative and interdisciplinary research teams. The handling of such challenges required time, resources, knowledge, interactive learning and skilled project management. CONCLUSIONS Collaborative approaches are important in the study of complex phenomena. Results from this study show that allocated time, arenas for interactions and skills in project management and communication are needed during research collaboration to ensure support and build trust and understanding with involved practitioners at several levels in the healthcare system. For researchers, dealing with this complexity takes time and energy from the scientific process. For practitioners, this puts demands on understanding a research process and how it fits with on-going organisational agendas and activities and allocating time. Some of the identified factors may be overlooked by funders and involved stakeholders when designing, performing and evaluating interdisciplinary, collaborative and partnership research.
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Affiliation(s)
- M. E. Nyström
- Department of Learning, Informatics, Management and Ethics, Medical Management Centre, Karolinska Institutet, SE 171 77 Stockholm, Sweden
- Department of Public Health and Clinical Medicine, Epidemiology and Global Health, Umeå University, SE 901 87 Umeå, Sweden
| | - J. Karltun
- Department of Industrial Engineering and Management, School of Engineering, Jönköping University, P.O. Box 1026, SE 551 11 Jönköping, Sweden
| | - C. Keller
- Jönköping International Business School, Jönköping University, P.O. Box 1026, SE 551 11 Jönköping, Sweden
| | - B. Andersson Gäre
- Futurum, Region Jönköping County, Sweden
- The Jönköping Academy for Improvement of Health and Welfare, School of Health Sciences, Jönköping University, P.O. Box 1026, SE 55111 Jönköping, Sweden
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Visscher C, Kruse A, Sander S, Keller C, Mischok J, Tabeling R, Henne H, Deitmer R, Kamphues J. Dietary approaches reducing boar taint-Importance ofLawsonia intracellulariscolonisation for interpreting results. J Anim Physiol Anim Nutr (Berl) 2018; 102 Suppl 1:3-15. [DOI: 10.1111/jpn.12860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 10/30/2017] [Indexed: 11/30/2022]
Affiliation(s)
- C. Visscher
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - A. Kruse
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - S. Sander
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - C. Keller
- Boehringer Ingelheim Veterinary Research Center GmbH & Co. KG; Hannover Germany
| | - J. Mischok
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - R. Tabeling
- Veterinärgesellschaft im BHZP; Uelzen Germany
| | - H. Henne
- BHZP GmbH; Dahlenburg-Ellringen Germany
| | - R. Deitmer
- Boehringer Ingelheim Vetmedica GmbH; Ingelheim am Rhein Germany
| | - J. Kamphues
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
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Robin SG, Keller C, Zwiener R, Hyman PE, Nurko S, Saps M, Di Lorenzo C, Shulman RJ, Hyams JS, Palsson O, van Tilburg MAL. Prevalence of Pediatric Functional Gastrointestinal Disorders Utilizing the Rome IV Criteria. J Pediatr 2018; 195:134-139. [PMID: 29398057 DOI: 10.1016/j.jpeds.2017.12.012] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/07/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To assess the prevalence of functional gastrointestinal (GI) disorders in children 0-18 years old according to the newly established Rome IV diagnostic criteria as reported by parents in a representative community sample. STUDY DESIGN A cross-sectional study in which mothers (n = 1255) of children aged 0-18 years old in the US were recruited to complete an online survey about their child's GI symptoms, quality of life (QoL), and other health conditions. RESULTS Based on the Rome IV criteria, 24.7% of infants and toddlers aged 0-3 years and 25.0% of children and adolescents aged 4-18 years fulfilled symptom-based criteria for a functional GI disorder. The most common functional GI disorders were infant regurgitation among infants (24.1%) and functional constipation among both toddlers (18.5%) and children and adolescents (14.1%). QoL was diminished in pediatric patients with functional GI disorders (median = 71.69 vs median = 87.60; z = -11.41; P < .001). Children were more likely to qualify for a functional GI disorder if their parent qualified for a functional GI disorder (35.4% vs 23.0%; P < .001). CONCLUSIONS Based on Rome IV criteria, functional GI disorders are common in pediatric populations of all ages and are associated with decreased QoL.
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Affiliation(s)
- Samantha G Robin
- Department of Medicine, Division of Gastroenterology and Hepatology, Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, NC
| | - Catherine Keller
- Department of Medicine, Division of Gastroenterology and Hepatology, Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, NC
| | - Russell Zwiener
- Department of Pediatrics, Louisiana State University, New Orleans, LA
| | - Paul E Hyman
- Department of Pediatrics, Louisiana State University, New Orleans, LA
| | - Samuel Nurko
- Center for Motility and Functional Gastrointestinal Disorders, Boston Children's Hospital, Boston, MA
| | - Miguel Saps
- Division of Gastroenterology and Nutrition, Nationwide Children's Hospital, Columbus, OH
| | - Carlo Di Lorenzo
- Division of Gastroenterology and Nutrition, Nationwide Children's Hospital, Columbus, OH
| | - Robert J Shulman
- Children's Nutrition Research Center, Baylor College of Medicine Department of Pediatrics, Texas Children's Hospital, Houston, TX
| | - Jeffrey S Hyams
- Division of Digestive Diseases,Hepatology, and Nutrition, Connecticut Children's Medical Center, Hartford, CT
| | - Olafur Palsson
- Department of Medicine, Division of Gastroenterology and Hepatology, Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, NC
| | - Miranda A L van Tilburg
- Department of Medicine, Division of Gastroenterology and Hepatology, Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, NC; College of Pharmacy and Health Sciences, Campbell University, Buies Creek, NC; School of Social Work, University of Washington, Seattle, WA.
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Guo C, Tomson G, Söderqvist F, Keller C. Adolescent mental health policies in Sweden and China: a comparative study. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx186.235] [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: 11/13/2022] Open
Affiliation(s)
- C Guo
- Karolinska Institutet, Stockholm, Sweden
| | - G Tomson
- Karolinska Institutet, Stockholm, Sweden
| | | | - C Keller
- Jönköping University, Jönköping, Sweden
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Meunier JD, Barboni D, Anwar-Ul-Haq M, Levard C, Chaurand P, Vidal V, Grauby O, Huc R, Laffont-Schwob I, Rabier J, Keller C. Effect of phytoliths for mitigating water stress in durum wheat. New Phytol 2017; 215:229-239. [PMID: 28394079 DOI: 10.1111/nph.14554] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 02/28/2017] [Indexed: 05/22/2023]
Abstract
The role of silicon (Si) in alleviating biotic and abiotic stresses in crops is well evidenced by empirical studies; however, the mechanisms by which it works are still poorly known. The aim of this study is to determine whether or not phytolith composition and distribution in wheat are affected by drought and, if so, why. Durum wheat was grown using hydroponics in the presence of polyethylene glycol (PEG)-6000 to perform a water-stress simulation. We developed an original method for in situ analysis of phytoliths in leaves via X-ray imaging. PEG was efficient in inhibiting water uptake by roots and creating stress, and prevented a small fraction of Si from being accumulated in the shoots. The application of Si with PEG maintained shoot and root fresh weights (FW) and relative water content at higher values than for plants without Si, especially at PEG 12%. Our data show that, under water stress in the presence of Si, accumulation of phytoliths over the veins provides better support to the leaf, thus allowing for a better development of the whole plant than in the absence of Si. The development of silicified trichomes in durum wheat depends primarily on the availability of Si in soil and is not an adaptation to water stress.
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Affiliation(s)
- Jean Dominique Meunier
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
| | - Doris Barboni
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
| | - Muhammad Anwar-Ul-Haq
- Institute of Soil & Environmental Sciences, University of Agriculture, 38040, Faisalabad, Pakistan
| | - Clément Levard
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
| | - Perrine Chaurand
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
| | - Vladimir Vidal
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
| | - Olivier Grauby
- CINaM, CNRS, Aix Marseille Université, Campus de Luminy Case 913, 13288, Marseille Cedex 9, France
| | - Roland Huc
- Unité Ecologie des Forêts Méditerranéennes (URFM), INRA, Domaine Saint Paul, Site Agroparc, 84914, Avignon Cedex 9, France
| | - Isabelle Laffont-Schwob
- CNRS, IRD, IMBE, Avignon University, Aix Marseille Université, Case 4, 3 Place Victor Hugo, 13331, Marseille Cedex 03, France
| | - Jacques Rabier
- CNRS, IRD, IMBE, Avignon University, Aix Marseille Université, Case 4, 3 Place Victor Hugo, 13331, Marseille Cedex 03, France
| | - Catherine Keller
- CNRS, IRD, Coll France, CEREGE, Aix Marseille Université, 13545, Aix-en-Provence Cedex 04, France
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Fouché J, Keller C, Allard M, Ambrosi JP. Diurnal evolution of the temperature sensitivity of CO 2 efflux in permafrost soils under control and warm conditions. Sci Total Environ 2017; 581-582:161-173. [PMID: 28062107 DOI: 10.1016/j.scitotenv.2016.12.089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 12/13/2016] [Accepted: 12/13/2016] [Indexed: 06/06/2023]
Abstract
Cryosols contain ~33% of the global soil organic carbon. Cryosol warming and permafrost degradation may enhance the CO2 release to the atmosphere through the microbial decomposition. Despite the large carbon pool, the permafrost carbon feedback on the climate remains uncertain. In this study, we aimed at better understanding the diurnal evolution of the temperature sensitivity of CO2 efflux in Cryosols. A Histic Cryosol and a Turbic Cryosol were instrumented in tussock tundra ecosystems near Salluit (Nunavik, Canada). Open top chambers were installed during summer 2011 and the ground temperature, the soil moisture and meteorological variables were recorded hourly while the ecosystem respiration was measured three times per day every second day with opaque and closed dynamic chambers in control and warm stations. Despite warmer conditions, the average CO2 efflux at the control stations at the Histic site (1.29±0.45μmolCO2m-2s-1) was lower than at the Turbic site (2.30±0.74μmolCO2m-2s-1). The increase in CO2 efflux with warming was greater in the Histic Cryosol (~39%) than in the Turbic Cryosol (~16%). Our study showed that the temperature sensitivity of the ecosystem respiration evolved during the day and decreased with the experimental warming. Both sites exhibited diurnal hysteresis loops between CO2 efflux and the soil surface temperature. The width of hysteresis loops increased with the solar radiation and decreased along the growing season. We developed simple linear models that took into account the diurnal evolution of the temperature sensitivity of CO2 efflux and we estimated the seasonal cumulative carbon release to the atmosphere. The calculation using solely diurnal measurements significantly differed from the seasonal carbon release modelled hourly. Our study highlighted that the time of the day when measurements are performed should be taken into account to accurately estimate the seasonal carbon release from tundra ecosystems.
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Affiliation(s)
- Julien Fouché
- Aix-Marseille Université, CNRS, IRD UMR 34 CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP80, 13545 Aix-en-Provence, France; Centre d'Études Nordiques, Université Laval, pav. Abitibi-Price, Québec, QC G1K 7P4, Canada; Department of Geography, Queen's University, Kingston, ON K7L 3N6, Canada.
| | - Catherine Keller
- Aix-Marseille Université, CNRS, IRD UMR 34 CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP80, 13545 Aix-en-Provence, France
| | - Michel Allard
- Centre d'Études Nordiques, Université Laval, pav. Abitibi-Price, Québec, QC G1K 7P4, Canada
| | - Jean Paul Ambrosi
- Aix-Marseille Université, CNRS, IRD UMR 34 CEREGE, Technopôle de l'Environnement Arbois-Méditerranée, BP80, 13545 Aix-en-Provence, France
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Ernst E, Keller C, Pfaffenrath V, Matrai A. Blood rheology in migraine. Clin Hemorheol Microcirc 2016. [DOI: 10.3233/ch-1987-7402] [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: 11/15/2022]
Affiliation(s)
- E. Ernst
- Hemorheology Research Laboratory, Clinic for Physical Medicine, University of Munich, 8000 Munich 2, Ziemssenstraße 1, FRG (Director: Prof. Dr. med. E. Senn)
| | - C. Keller
- Dept. Neurology, University of Munich, 8000 Munich 2, Ziemssenstraße 1, FRG (Director: Prof. Dr. med. E. Senn)
| | - V. Pfaffenrath
- Dept. Neurology, University of Munich, 8000 Munich 2, Ziemssenstraße 1, FRG (Director: Prof. Dr. med. E. Senn)
| | - A. Matrai
- Hemorheology Research Laboratory, Clinic for Physical Medicine, University of Munich, 8000 Munich 2, Ziemssenstraße 1, FRG (Director: Prof. Dr. med. E. Senn)
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Al Feghali K, Ghanem A, Chang S, Ghanem T, Burmeister C, Keller C, Siddiqui F. Smoking Predicts for Worse Pathological Features in Oral Cavity Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1602] [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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Trolard F, Bourrié G, Baillieux A, Buis S, Chanzy A, Clastre P, Closet JF, Courault D, Dangeard ML, Di Virgilio N, Dussouilliez P, Fleury J, Gasc J, Géniaux G, Jouan R, Keller C, Lecharpentier P, Lecroart J, Napoleone C, Mohammed G, Olioso A, Reynders S, Rossi F, Tennant M, de Vicente Lopez J. The PRECOS framework: Measuring the impacts of the global changes on soils, water, agriculture on territories to better anticipate the future. J Environ Manage 2016; 181:590-601. [PMID: 27423772 DOI: 10.1016/j.jenvman.2016.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/23/2016] [Accepted: 07/01/2016] [Indexed: 06/06/2023]
Abstract
In a context of increased land and natural resources scarcity, the possibilities for local authorities and stakeholders of anticipating evolutions or testing the impact of envisaged developments through scenario simulation are new challenges. PRECOS's approach integrates data pertaining to the fields of water and soil resources, agronomy, urbanization, land use and infrastructure etc. It is complemented by a socio-economic and regulatory analysis of the territory illustrating its constraints and stakes. A modular architecture articulates modeling software and spatial and temporal representations tools. It produces indicators in three core domains: soil degradation, water and soil resources and agricultural production. As a territory representative of numerous situations of the Mediterranean Basin (urban pressures, overconsumption of spaces, degradation of the milieus), a demonstration in the Crau's area (Southeast of France) has allowed to validate a prototype of the approach and to test its feasibility in a real life situation. Results on the Crau area have shown that, since the beginning of the 16th century, irrigated grasslands are the cornerstones of the anthropic-system, illustrating how successfully men's multi-secular efforts have maintained a balance between environment and local development. But today the ecosystem services are jeopardized firstly by urban sprawl and secondly by climate change. Pre-diagnosis in regions of Emilia-Romagna (Italy) and Valencia (Spain) show that local end-users and policy-makers are interested by this approach. The modularity of indicator calculations and the availability of geo-databases indicate that PRECOS may be up scaled in other socio-economic contexts.
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Affiliation(s)
- Fabienne Trolard
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France.
| | - Guilhem Bourrié
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | | | - Samuel Buis
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | - André Chanzy
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | - Philippe Clastre
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | | | - Dominique Courault
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | - Marie-Lorraine Dangeard
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | | | - Philippe Dussouilliez
- Aix-Marseille University, CNRS, IRD, Collège de France, UM34 CEREGE, Aix-en-Provence, France
| | - Jules Fleury
- Aix-Marseille University, CNRS, IRD, Collège de France, UM34 CEREGE, Aix-en-Provence, France
| | | | | | | | - Catherine Keller
- Aix-Marseille University, CNRS, IRD, Collège de France, UM34 CEREGE, Aix-en-Provence, France
| | - Patrice Lecharpentier
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | | | | | - Gihan Mohammed
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | - Albert Olioso
- INRA, UAPV, UMR Mediterranean Environment and Modelling of Agro-Hydrosystems, Domaine Saint-Paul, Site Agroparc, 222 Route de l'Aérodrome, 84914 Avignon Cedex 9, France
| | | | - Federica Rossi
- CNR, IBIMET, Institute of Bioclimatology, Bologna, Italy
| | - Mike Tennant
- Imperial College, Center for Environmental Policy, London, UK
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Rizwan M, Ali S, Abbas T, Zia-Ur-Rehman M, Hannan F, Keller C, Al-Wabel MI, Ok YS. Cadmium minimization in wheat: A critical review. Ecotoxicol Environ Saf 2016; 130:43-53. [PMID: 27062345 DOI: 10.1016/j.ecoenv.2016.04.001] [Citation(s) in RCA: 306] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 04/01/2016] [Accepted: 04/01/2016] [Indexed: 05/03/2023]
Abstract
Cadmium (Cd) accumulation in wheat (Triticum aestivum L.) and its subsequent transfer to food chain is a major environmental issue worldwide. Understanding wheat response to Cd stress and its management for aiming to reduce Cd uptake and accumulation in wheat may help to improve wheat growth and grain quality. This paper reviewed the toxic effects, tolerance mechanisms, and management of Cd stress in wheat. It was concluded that Cd decreased germination, growth, mineral nutrients, photosynthesis and grain yield of wheat and plant response to Cd toxicity varies with cultivars, growth conditions and duration of stress applied. Cadmium caused oxidative stress and genotoxicity in wheat plants. Stimulation of antioxidant defense system, osmoregulation, ion homeostasis and over production of signalling molecules are important adaptive strategies of wheat under Cd stress. Exogenous application of plant growth regulators, inorganic amendments, proper fertilization, silicon, and organic, manures and biochar, amendments are commonly used for the reduction of Cd uptake in wheat. Selection of low Cd-accumulating wheat cultivars, crop rotation, soil type, and exogenous application of microbes are among the other agronomic practices successfully employed in reducing Cd uptake by wheat. These management practices could enhance wheat tolerance to Cd stress and reduce the transfer of Cd to the food chain. However, their long-term sustainability in reducing Cd uptake by wheat needs further assessment.
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Affiliation(s)
- Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan.
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Tahir Abbas
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Muhammad Zia-Ur-Rehman
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
| | - Fakhir Hannan
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Catherine Keller
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, 13545 Aix en Provence, France
| | - Mohammad I Al-Wabel
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Yong Sik Ok
- Korea Biochar Research Center and Department of Biological Environment, Kangwon National University, Chuncheon 200-701, South Korea
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Delost G, Haydanek C, Carty N, Keller C. 538 The synergistic effect of cinnamon cassia oil and erythromycin on overcoming antibiotic resistant Staphylococcus aureus. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.576] [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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Bonella F, Kreuter M, Hagmeyer L, Neurohr C, Milger K, Keller C, Kohlhäufl M, Müller-Quernheim J, Prasse A. Use of nintedanib for the treatment of idiopathic pulmonary fibrosis: multi-centre real life experience in Germany. Pneumologie 2016. [DOI: 10.1055/s-0036-1572074] [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: 10/22/2022]
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Rizwan M, Meunier JD, Davidian JC, Pokrovsky OS, Bovet N, Keller C. Silicon alleviates Cd stress of wheat seedlings (Triticum turgidum L. cv. Claudio) grown in hydroponics. Environ Sci Pollut Res Int 2016; 23:1414-27. [PMID: 26370813 DOI: 10.1007/s11356-015-5351-4] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/01/2015] [Indexed: 05/06/2023]
Abstract
We investigated the potential role of silicon in improving tolerance and decreasing cadmium (Cd) toxicity in durum wheat (Triticum turgidum L. durum) either through a reduced Cd uptake or exclusion/sequestration in non-metabolic tissues. For this, plants were grown in hydroponic conditions for 10 days either in presence or absence of 1 mM Si and for 11 additional days in various Cd concentrations (0, 0.5, 5.0 and 50 μM). After harvesting, morphological and physiological parameters as well as elemental concentrations were recorded. Cadmium caused reduction in growth parameters, photosynthetic pigments and mineral nutrient concentrations both in shoots and roots. Shoot and root contents of malate, citrate and aconitate increased, while contents of phosphate, nitrate and sulphate decreased with increasing Cd concentrations in plants. Addition of Si to the nutrient solution mitigated these adverse effects: Cd concentration in shoots decreased while concentration of Cd adsorbed at the root cell apoplasmic level increased together with Zn uptake by roots. Overall, total Cd uptake decreased in presence of Si. There was no co-localisation of Cd and Si either at the shoot or at the root levels. No Cd was detected in leaf phytoliths. In roots, Cd was mainly detected in the cortical parenchyma and Si at the endodermis level, while analysis of the outer thin root surface of the plants grown in the 50 μM Cd + 1 mM Si treatment highlighted non-homogeneous Cd and Si enrichments. These data strongly suggest the existence of a root localised protection mechanism consisting in armoring the root surface by Si- and Cd-bearing compounds and in limiting root-shoot translocation.
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Affiliation(s)
- M Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, 13545, Aix en Provence, France
| | - J-D Meunier
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, 13545, Aix en Provence, France
| | - J-C Davidian
- Biochimie & Physiologie Moléculaire des Plantes, UMR CNRS-INRA-Université Montpellier II-Montpellier SupAgro, Place Viala, 34060, Montpellier, Cedex 2, France
| | - O S Pokrovsky
- Geoscience and Environment Toulouse (GET), UMR 5563 CNRS, 14 Avenue Edouard Belin, 31400, Toulouse, France
- BIO-GEO-CLIM Laboratory, Tomsk State University, Tomsk, Russia
| | - N Bovet
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - C Keller
- Aix-Marseille Université, CNRS, IRD, CEREGE UM34, 13545, Aix en Provence, France.
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Mötteli S, Barbey J, Keller C, Bucher T, Siegrist M. Measuring practical knowledge about balanced meals: development and validation of the brief PKB-7 scale. Eur J Clin Nutr 2015; 70:505-10. [DOI: 10.1038/ejcn.2015.173] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 08/11/2015] [Accepted: 08/31/2015] [Indexed: 11/09/2022]
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Roques S, Sollman R, Jácomo A, Tôrres N, Silveira L, Chávez C, Keller C, do Prado DM, Torres PC, dos Santos CJ, da Luz XBG, Magnusson WE, Godoy JA, Ceballos G, Palomares F. Effects of habitat deterioration on the population genetics and conservation of the jaguar. CONSERV GENET 2015. [DOI: 10.1007/s10592-015-0766-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Revenäs Å, Martin C, Opava C, Keller C, Åsenlöf P. THU0613-HPR Challenges in Co-Designing a Web Service to Support Self-Management of Physical Activity in Individuals with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2583] [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: 11/03/2022]
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Keller C, Rizwan M, Davidian JC, Pokrovsky OS, Bovet N, Chaurand P, Meunier JD. Effect of silicon on wheat seedlings (Triticum turgidum L.) grown in hydroponics and exposed to 0 to 30 µM Cu. Planta 2015; 241:847-60. [PMID: 25515193 DOI: 10.1007/s00425-014-2220-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 12/02/2014] [Indexed: 05/24/2023]
Abstract
Aqueous Si limits Cu uptake by a Si-accumulating plant via physicochemical mechanisms occurring at the root level. Sufficient Si supply may alleviate Cu toxicity in Cu-contaminated soils. Little information is available on the role of silicon (Si) in copper (Cu) tolerance while Cu toxicity is widespread in crops grown on Cu-contaminated soils. A hydroponic study was set up to investigate the influence of Si on Cu tolerance in durum wheat (Triticum turgidum L.) grown in 0, 0.7, 7.0 and 30 µM Cu without and with 1.0 mM Si, and to identify the mechanisms involved in mitigation of Cu toxicity. Si supply alleviated Cu toxicity in durum wheat at 30 µM Cu, while Cu significantly increased Si concentration in roots. Root length, photosynthetic pigments concentrations, macroelements, and organic anions (malate, acetate and aconitate) in roots, were also increased. Desorption experiments, XPS analysis of the outer thin root surface (≤100 Å) and µXRF analyses showed that Si increased adsorption of Cu at the root surface as well as Cu accumulation in the epidermis while Cu was localised in the central cylinder when Si was not applied. Copper was not detected in phytoliths. This study provides evidences for Si-mediated alleviation of Cu toxicity in durum wheat. It also shows that Si supplementation to plants exposed to increasing levels of Cu in solution induces non-simultaneous changes in physiological parameters. We propose a three-step mechanism occurring mainly at the root level and limiting Cu uptake and translocation to shoots: (i) increased Cu adsorption onto the outer thin layer root surface and immobilisation in the vicinity of root epidermis, (ii) increased Cu complexation by both inorganic and organic anions such as aconitate and, (iii) limitation of translocation through an enhanced thickening of a Si-loaded endodermis.
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Affiliation(s)
- C Keller
- CEREGE, UMR AMU-CNRS 7330, Aix-Marseille Univ., Technopôle de l'Environnement Arbois-Méditerranée, 13545, Aix en Provence Cedex 4, France,
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Hayes M, Frearson S, Keller C, Cartmale A, Lewis-Hayes S. A hermeneutic phenomenological study of why adults with type 1 diabetes choose to discontinue CSII. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.167] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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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Coutelot F, Sappin-Didier V, Keller C, Atteia O. Comparison of soil solution sampling techniques to assess metal fluxes from contaminated soil to groundwater. Environ Monit Assess 2014; 186:8929-8941. [PMID: 25277861 DOI: 10.1007/s10661-014-4055-4] [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] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 09/11/2014] [Indexed: 06/03/2023]
Abstract
The unsaturated zone plays a major role in elemental fluxes in terrestrial ecosystems. A representative chemical analysis of soil pore water is required for the interpretation of soil chemical phenomena and particularly to assess Trace Elements (TEs) mobility. This requires an optimal sampling system to avoid modification of the extracted soil water chemistry and allow for an accurate estimation of solute fluxes. In this paper, the chemical composition of soil solutions sampled by Rhizon® samplers connected to a standard syringe was compared to two other types of suction probes (Rhizon® + vacuum tube and Rhizon® + diverted flow system). We investigated the effects of different vacuum application procedures on concentrations of spiked elements (Cr, As, Zn) mixed as powder into the first 20 cm of 100-cm columns and non-spiked elements (Ca, Na, Mg) concentrations in two types of columns (SiO2 sand and a mixture of kaolinite + SiO2 sand substrates). Rhizon® was installed at different depths. The metals concentrations showed that (i) in sand, peak concentrations cannot be correctly sampled, thus the flux cannot be estimated, and the errors can easily reach a factor 2; (ii) in sand + clay columns, peak concentrations were larger, indicating that they could be sampled but, due to sorption on clay, it was not possible to compare fluxes at different depths. The different samplers tested were not able to reflect the elemental flux to groundwater and, although the Rhizon® + syringe device was more accurate, the best solution remains to be the use of a lysimeter, whose bottom is kept continuously at a suction close to the one existing in the soil.
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Affiliation(s)
- F Coutelot
- ENSEGID, EA4592 G&E, EGID université Bordeaux-3, 1, allée Daguin, 33607, Pessac, France,
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Schmidt K, Wienken M, Keller C, Schmidt J. G.P.62. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.076] [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: 12/01/2022]
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Alexanderson K, von Knorring M, Keller C. Impact of a nationwide government program in Sweden on how healthcare managers, in their organisations, manage the work with sickness certification of patients. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku161.098] [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: 11/13/2022] Open
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Linsler S, Keller C, Urbschat S, Rahnenfuhrer J, Ketter R, Oertel J. P06.06 * PROGNOSIS OF MENINGIOMAS IN THE 1970S AND TODAY. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.172] [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: 11/14/2022] Open
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48
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Vogt A, Keller C, Heigl C, Weiss N, Zöllner N. [Two forms of familial hypercholesterolemia: differences in cardiovascular risk factors, cardiac and extracardiac atherosclerosis]. Dtsch Med Wochenschr 2014; 139:2573-7. [PMID: 25126774 DOI: 10.1055/s-0034-1387237] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND AND AIM The monogenetic hypercholesterolemias (HC) are associated with a very high risk of premature coronary heart disease (CHD). We sought to assess the influence of the genetic defect and the cardiovascular risk factors on the manifestation of atherosclerotic complications in two forms of genetic HC. PATIENTS AND METHODS Data of patients with genetically defined HC (54 LDL-receptor defective familial hypercholesterolemia (FH) and 54 familial defective apolipoprotein B (FDB)) were analysed retrospectively for cardiac and extracardiac atherosclerosis. RESULTS Total and LDL-cholesterol were significantly higher in FH men than in FDB men, but not so in women. 41.8% of FH patients had CHD (mean age 41 years), 5.6% of FDB (mean age 52 years). Stenoses (>50% narrowing) of the internal carotid artery were verified in 15% of FH and 4% of FDB patients. Peripheral arterial disease was found in 3 FH and 2 FDB patients. Hypertension and active smoking were allotted almost equally, body weight was normal in most of the patients (BMI ≤ 25 kg/m(2)). Conlusion: Patients with genetic HC suffer from early manifestation of cardiac disease. Patients with FH seem to be affected more often than patients with FDB. Early diagnosis and early and lifelong treatment are essential and, according to the literature, lead to a delay of disease manifestation.
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Affiliation(s)
- A Vogt
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München
| | - C Keller
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München
| | - C Heigl
- Fakultät für Zahnmedizin Ludwig-Maximilians-Universität München
| | - N Weiss
- Universitäts GefäßCentrum, Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden
| | - N Zöllner
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München
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Simon A, Mattausch H, Mikheev NB, Keller C. Zum Einbau von einigen Lanthaniden in Gd2Cl3 / Incorporation of Some Lanthanides into Gd2Cl3. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1987-0602] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Co-crystallization experiments with radioactive isotopes of lanthanides (Ce, Nd, Eu, Gd, Tb, Dy, Tm, Yb) show that only Tb is incorporated by Gd2Cl3 in a significant amount. The results are discussed in terms of the electronic configuration of Ln2+ ions as well as redox potentials E°(Ln3+/Ln2+).
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Affiliation(s)
- A. Simon
- Max-Planck-Institut für Festkörperforschung. Heisenbergstraße 1, D-7000 Stuttgart 80
| | - Hj. Mattausch
- Max-Planck-Institut für Festkörperforschung. Heisenbergstraße 1, D-7000 Stuttgart 80
| | - N. B. Mikheev
- Institut für Physikalische Chemie, Akademie der Wissenschaften der UdSSR, Lenin-Prospekt 31, Moskau
| | - C. Keller
- Schule für Kerntechnik, Kernforschungszentrum Karlsruhe GmbH, Postfach 3640, D-7500 Karlsruhe 1
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Classen CF, William D, Linnebacher M, Farhod A, Kedr W, Elsabe B, Fadel S, Van Gool S, De Vleeschouwer S, Koks C, Garg A, Ehrhardt M, Riva M, De Vleeschouwer S, Agostinis P, Graf N, Van Gool S, Yao TW, Yoshida Y, Zhang J, Ozawa T, James D, Nicolaides T, Kebudi R, Cakir FB, Gorgun O, Agaoglu FY, Darendeliler E, Van Gool S, De Vleeschouwer S, Al-Kofide A, Al-Shail E, Khafaga Y, Al-Hindi H, Dababo M, Haq AU, Anas M, Barria MG, Siddiqui K, Hassounah M, Ayas M, van Zanten SV, Jansen M, van Vuurden D, Huisman M, Vugts D, Hoekstra O, van Dongen G, Kaspers G, Cockle J, Ilett E, Scott K, Bruning-Richardson A, Picton S, Short S, Melcher A, Benesch M, Warmuth-Metz M, von Bueren AO, Hoffmann M, Pietsch T, Kortmann RD, Eyrich M, Graf N, Rutkowski S, Fruhwald MC, Faber J, Kramm C, Porkholm M, Valanne L, Lonnqvist T, Holm S, Lannering B, Riikonen P, Wojcik D, Sehested A, Clausen N, Harila-Saari A, Schomerus E, Thorarinsdottir HK, Lahteenmaki P, Arola M, Thomassen H, Saarinen-Pihkala UM, Kivivuori SM, Buczkowicz P, Hoeman C, Rakopoulos P, Pajovic S, Morrison A, Bouffet E, Bartels U, Becher O, Hawkins C, Gould TWA, Rahman CV, Smith SJ, Barrett DA, Shakesheff KM, Grundy RG, Rahman R, Barua N, Cronin D, Gill S, Lowisl S, Hochart A, Maurage CA, Rocourt N, Vinchon M, Kerdraon O, Escande F, Grill J, Pick VK, Leblond P, Burzynski G, Janicki T, Burzynski S, Marszalek A, Ramani N, Zaky W, Kannan G, Morani A, Sandberg D, Ketonen L, Maher O, Corrales-Medina F, Meador H, Khatua S, Brassesco M, Delsin L, Roberto G, Silva C, Ana L, Rego E, Scrideli C, Umezawa K, Tone L, Kim SJ, Kim CY, Kim IA, Han JH, Choi BS, Ahn HS, Choi HS, Haque F, Rahman R, Layfield R, Grundy R, Gandola L, Pecori E, Biassoni V, Schiavello E, Chiruzzi C, Spreafico F, Modena P, Bach F, Pignoli E, Massimino M, Drogosiewicz M, Dembowska-Baginska B, Jurkiewicz E, Filipek I, Perek-Polnik M, Swieszkowska E, Perek D, Bender S, Jones DT, Warnatz HJ, Hutter B, Zichner T, Gronych J, Korshunov A, Eils R, Korbel JO, Yaspo ML, Lichter P, Pfister SM, Yadavilli S, Becher OJ, Kambhampati M, Packer RJ, Nazarian J, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Vaidya S, Koh DM, Leach MO, Pearson AD, Zacharoulis S, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Schrey D, Barone G, Vaidya S, Koh DM, Pearson AD, Zacharoulis S, Panditharatna E, Stampar M, Siu A, Gordish-Dressman H, Devaney J, Kambhampati M, Hwang EI, Packer RJ, Nazarian J, Chung AH, Mittapalli RK, Elmquist WF, Becher OJ, Castel D, Debily MA, Philippe C, Truffaux N, Taylor K, Calmon R, Boddaert N, Le Dret L, Saulnier P, Lacroix L, Mackay A, Jones C, Puget S, Sainte-Rose C, Blauwblomme T, Varlet P, Grill J, Entz-Werle N, Maugard C, Bougeard G, Nguyen A, Chenard MP, Schneider A, Gaub MP, Tsoli M, Vanniasinghe A, Luk P, Dilda P, Haber M, Hogg P, Ziegler D, Simon S, Tsoli M, Vanniasinghe A, Monje M, Gurova K, Gudkov A, Haber M, Ziegler D, Zapotocky M, Churackova M, Malinova B, Zamecnik J, Kyncl M, Tichy M, Puchmajerova A, Stary J, Sumerauer D, Boult J, Vinci M, Taylor K, Perryman L, Box G, Jury A, Popov S, Ingram W, Monje M, Eccles S, Jones C, Robinson S, Emir S, Demir HA, Bayram C, Cetindag F, Kabacam GB, Fettah A, Boult J, Li J, Vinci M, Jury A, Popov S, Jamin Y, Cummings C, Eccles S, Bamber J, Sinkus R, Jones C, Robinson S, Nandhabalan M, Bjerke L, Vinci M, Burford A, Ingram W, Mackay A, von Bueren A, Baudis M, Clarke P, Collins I, Workman P, Jones C, Taylor K, Mackay A, Vinci M, Popov S, Ingram W, Entz-Werle N, Monje M, Olaciregui N, Mora J, Carcaboso A, Bullock A, Jones C, Vinci M, Mackay A, Burford A, Taylor K, Popov S, Ingram W, Monje M, Alonso M, Olaciregui N, de Torres C, Cruz O, Mora J, Carcaboso A, Jones C, Filipek I, Drogosiewicz M, Perek-Polnik M, Swieszkowska E, Dembowska-Baginska B, Jurkiewicz E, Perek D, Nguyen A, Pencreach E, Mackay A, Moussalieh FM, Guenot D, Namer I, Chenard MP, Jones C, Entz-Werle N, Pollack I, Jakacki R, Butterfield L, Hamilton R, Panigrahy A, Potter D, Connelly A, Dibridge S, Whiteside T, Okada H, Ahsan S, Raabe E, Haffner M, Warren K, Quezado M, Ballester L, Nazarian J, Eberhart C, Rodriguez F, Ramachandran C, Nair S, Quirrin KW, Khatib Z, Escalon E, Melnick S, Classen CF, Hofmann M, Schmid I, Simon T, Maass E, Russo A, Fleischhack G, Becker M, Hauch H, Sander A, Kramm C, Grasso C, Truffaux N, Berlow N, Liu L, Debily MA, Davis L, Huang E, Woo P, Tang Y, Ponnuswami A, Chen S, Huang Y, Hutt-Cabezas M, Warren K, Dret L, Meltzer P, Mao H, Quezado M, van Vuurden D, Abraham J, Fouladi M, Svalina MN, Wang N, Hawkins C, Raabe E, Hulleman E, Li XN, Keller C, Spellman PT, Pal R, Grill J, Monje M, Jansen MHA, Sewing ACP, Lagerweij T, Vuchts DJ, van Vuurden DG, Caretti V, Wesseling P, Kaspers GJL, Hulleman E, Cohen K, Raabe E, Pearl M, Kogiso M, Zhang L, Qi L, Lindsay H, Lin F, Berg S, Li XN, Muscal J, Amayiri N, Tabori U, Campbel B, Bakry D, Aronson M, Durno C, Gallinger S, Malkin D, Qaddumi I, Musharbash A, Swaidan M, Bouffet E, Hawkins C, Al-Hussaini M, Rakopoulos P, Shandilya S, McCully C, Murphy R, Akshintala S, Cole D, Macallister RP, Cruz R, Widemann B, Warren K, Salloum R, Smith A, Glaunert M, Ramkissoon A, Peterson S, Baker S, Chow L, Sandgren J, Pfeifer S, Popova S, Alafuzoff I, de Stahl TD, Pietschmann S, Kerber MJ, Zwiener I, Henke G, Kortmann RD, Muller K, von Bueren A, Sieow NYF, Hoe RHM, Tan AM, Chan MY, Soh SY, Hawkins C, Burrell K, Chornenkyy Y, Remke M, Golbourn B, Buczkowicz P, Barzczyk M, Taylor M, Rutka J, Dirks P, Zadeh G, Agnihotri S, Hashizume R, Ihara Y, Andor N, Chen X, Lerner R, Huang X, Tom M, Solomon D, Mueller S, Petritsch C, Zhang Z, Gupta N, Waldman T, James D, Dujua A, Co J, Hernandez F, Doromal D, Hegde M, Wakefield A, Brawley V, Grada Z, Byrd T, Chow K, Krebs S, Heslop H, Gottschalk S, Yvon E, Ahmed N, Truffaux N, Philippe C, Cornilleau G, Paulsson J, Andreiuolo F, Guerrini-Rousseau L, Puget S, Geoerger B, Vassal G, Ostman A, Grill J, Parsons DW, Lin F, Trevino LR, Gao F, Shen X, Hampton O, Lindsay H, 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HIGH GRADE GLIOMAS AND DIPG. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou071] [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: 11/14/2022] Open
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