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Indumathi N, Ganga B, Charles S, Abdul Hakeem AK. Magnetohydrodynamics Boundary Layer Flow Past a Wedge of Casson CuO-TiO 2/EG Embedded in Non-Darcian Porous Media: Viscous Dissipation Effects. j nanofluids 2022. [DOI: 10.1166/jon.2022.1888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The movement physiognomies and heat transmission of viscous dissipative Casson hybrid nanoliquid (cupric oxide CuO titania TiO2/ethylene glycol EG) and nanoliquid (titania TiO2/ethylene glycol EG) MHD flow via a wedge saturated with non-Darcy porous medium and
forced convection were the focus of this inquiry. The major partial differential equalities beside with the limit conditions were condensed to dimensionless forms by spending proper similarity transformation. The follow-on system of ODEs by the matching limit conditions was elucidated numerically
by way of MATLAB, bvp4c solver. The research ramifications for basic TiO2/EG and hybrid CuO–TiO2/EG nanoliquids were presented and explained in detail. The greater upsides of the Casson parameter, magnetic parameter, first and second order porous resistance parameters,
the velocity increases and the temperature profile decreases. Furthermore, the thermal field strengthens porosity and Eckert number. It was also found that the Nusselt number is an enhancing function of Casson parameter wheras, greater values of magnetic parameter and porosity parameter lessen
the Nusselt number.
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Affiliation(s)
- N. Indumathi
- Department of Mathematics, Sri Ramakrishna Engineering College, Coimbatore 641022, India
| | - B. Ganga
- Department of Mathematics, Providence College for Women, Coonoor 643104, India
| | - S. Charles
- Department of Mathematics, PSG College of Arts and Science, Coimbatore 641014, India
| | - A. K. Abdul Hakeem
- Department of Mathematics, SRMV College of Arts and Science, Coimbatore 641020, India
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Naik PA, Indumathi N, Ganga B, Charles S, Hakeem AKA, Iqbal Z, Tag-ElDin E, Zu J. Forced convection of non-darcy flow of ethylene glycol conveying copper(II) oxide and titanium dioxide nanoparticles subject to lorentz force on wedges: Non-newtonian casson model. Front Chem 2022; 10:1010591. [PMID: 36226115 PMCID: PMC9549405 DOI: 10.3389/fchem.2022.1010591] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
The topic of two-dimensional steady laminar MHD boundary layer flow across a wedge with non-Newtonian hybrid nanoliquid (CuO-TiO2/C2H6O2) with viscous dissipation and radiation is taken into consideration. The controlling partial differential equations have been converted to non-linear higher-order ordinary differential equations using the appropriate similarity transformations. It is demonstrated that a number of thermo-physical characteristics govern the transmuted model. The issue is then mathematically resolved. When the method’s accuracy is compared to results that have already been published, an excellent agreement is found. While the thermal distribution increases with an increase in Eckert number, radiation and porosity parameters, the velocity distribution decreases as porosity increases.
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Affiliation(s)
- Parvaiz Ahmad Naik
- School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China
| | - N. Indumathi
- Department of Mathematical Sri Ramakrishna Engineering College, Coimbatore, India
| | - B. Ganga
- Department of Mathematics, Providence College for Women, Coonoor, India
| | - S. Charles
- Department of Mathematics, PSG College of Arts and Science, Coimbatore, India
| | - A. K. Abdul Hakeem
- Department of Mathematics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, India
| | - Zahoor Iqbal
- Department of Mathematics, Quaid-i-Azam University, Islamabad, Pakistan
| | - ElSayed Tag-ElDin
- Faculty of Engineering and Technology, Future University in Egypt New Cairo, New Cairo, Egypt
| | - Jian Zu
- School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Jian Zu,
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Muhammed H, Jain A, Irfan M, Charles S, Dwivedi P, Chavan PP, Khubchandani R, Sharma A, Phatak S, Shukla AN, Shah R, Subramanian N, Pandya SC, Singh YP, Chengappa KG, Thabah M, Rajasekhar L, Shobha V, Negi VS, Dhir V, Sharma A, Misra R, Aggarwal A. Clinical features, severity and outcome of acute pancreatitis in systemic lupus erythematosus. Rheumatol Int 2021; 42:1363-1371. [PMID: 33723658 DOI: 10.1007/s00296-021-04834-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/03/2021] [Indexed: 02/07/2023]
Abstract
Acute pancreatitis (AP) is a rare but life threatening manifestation of Systemic Lupus Erythematosus (SLE). The current study aims to study the clinical characteristics, severity, mortality, and outcome of SLE-related AP in Indian population. We retrospectively reviewed medical records of patients with SLE who had AP in the past. Data from 13 rheumatology centers across India were compiled. All patients satisfied SLICC criteria for SLE and ATLANTA criteria for AP. AP was classified in to mild, moderate and severe using revised Atlanta classification. Patients with known risk factors like gall stone and alcohol were excluded.Sixty-six patients (six, children) were studied. Majority of patients were females (82%). The median age of presentation was 24 (11-63) years and most patients (57.5%) presented within first year of diagnosis of lupus. AP occurred mostly in the setting of active lupus (89%). Active nephritis was seen in 39% while a fourth had CNS disease. Patients with severe AP had lower C3. Ascites and sepsis were most common local and systemic complications, respectively. Mortality was 17%. Hypocalcemia, presence of sepsis and shock predicted mortality. In the multivariate analysis, only presence of shock remained as independent predictor of death (OR 63.0, 95% CI: 5.2-760.3). Pancreatitis is an early manifestation of SLE and is associated with active disease. Significant mortality is seen particularly with severe pancreatitis.
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Affiliation(s)
- Hafis Muhammed
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India
| | - Avinash Jain
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India.,Currently SMS Medical College and Hospital, Jaipur, India
| | | | - Sheba Charles
- St John's National Academy of Medical College, Bengaluru, India
| | - Preksha Dwivedi
- Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | | | | | | | | | | | - Ripal Shah
- One-Centre for Rheumatology and Genetics, Vadodara, India
| | | | | | | | - K G Chengappa
- Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Molly Thabah
- Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | | | - Vineeta Shobha
- St John's National Academy of Medical College, Bengaluru, India
| | - V S Negi
- Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Varun Dhir
- Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Aman Sharma
- Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ramnath Misra
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India
| | - Amita Aggarwal
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India.
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Shobha V, Charles S, Pinto B. Pancreatitis in systemic lupus erythematosus: Clinical characterization and outcome analysis in concurrent pancreatitis and lupus. Indian J Rheumatol 2021. [DOI: 10.4103/injr.injr_287_20] [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: 11/04/2022] Open
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Brooke BD, Raman J, Frean J, Rundle J, Maartens F, Misiani E, Mabuza A, Barnes KI, Moonasar DP, Dlamini Q, Charles S, Blumberg L. Implementing malaria control in South Africa, Eswatini and southern Mozambique during the COVID-19 pandemic. S Afr Med J 2020; 110:1072-1076. [PMID: 33403980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 10/08/2020] [Indexed: 06/12/2023] Open
Abstract
The COVID-19 pandemic has strained healthcare delivery systems in a number of southern African countries. Despite this, it is imperative that malaria control and elimination activities continue, especially to reduce as far as possible the number and rate of hospitalisations caused by malaria. The implementation of enhanced malaria control/elimination activities in the context of COVID-19 requires measures to protect healthcare workers and the communities they serve. The aim of this review is therefore to present innovative ideas for the timely implementation of malaria control without increasing the risk of COVID-19 to healthcare workers and communities. Specific recommendations for parasite and vector surveillance, diagnosis, case management, mosquito vector control and community outreach and sensitisation are given.
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Affiliation(s)
- B D Brooke
- Centre for Emerging Zoonotic and Parasitic Diseases, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa; Wits Research Institute for Malaria, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
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Eliaerts J, Meert N, Van Durme F, Dardenne P, Charles S, De Wael K, Samyn N. Challenges for cocaine detection in smuggling samples. Forensic Sci Int 2020; 319:110534. [PMID: 33360243 DOI: 10.1016/j.forsciint.2020.110534] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/12/2020] [Accepted: 09/30/2020] [Indexed: 11/24/2022]
Abstract
Screening of seized cocaine powders is routinely performed by means of colour tests. An alternative fast screening technique is Mid-InfraRed (MIR) spectroscopy. In the context of smuggling cases, however, drugs are often processed to circumvent detection. In this study, the current screening techniques (cocaine colour test and MIR spectroscopy using libraries and chemometrics) were applied to five smuggling cases. For each case, all samples were first screened with a cocaine colour test and MIR analysis, followed by confirmation analyses with GC-MS and GC-FID to identify and quantify cocaine and cutting agents. Finally, Scanning Electron Microscopy-Energy Dispersive X-ray spectroscopy (SEM-EDX) analyses were performed for additional characterization. All smuggling samples tested negative, both on-site as in the laboratory, for cocaine with the cocaine colour test. Four smuggling cases consisted of coloured samples. Consequently the colour test result was influenced because discolouration of the test showed almost the same colour as the colour of the powders (brown, green, red or black). In contrast, the (coloured) powders could be measured with MIR, but the MIR spectra showed no hit for cocaine using a reference library search. Moreover, cocaine was not detected in four out of the five cases after application of a chemometric classification model. GC-MS analysis, the golden standard for identification, resulted in a positive identification of cocaine in all cases. These samples contained cocaine ranging between 0.8w% and 35w%. Taking into account the results of the screening, the chromatographic and the SEM-EDX analyses, it could be presumed that cocaine was masked. False negative screening results were caused by chemically modified cocaine and/or cocaine mixed with coloured powders. In additional experiments, a sample extraction step prior to the screening techniques was performed. Two sample preparation methods (acetone and ethyl acetate) were tested and resulted in a positive screening of cocaine with the colour test and/or MIR spectroscopy. It can be concluded that the outcome of screening techniques such as colour tests and MIR spectroscopy is only presumptive and should always be confirmed.
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Affiliation(s)
- J Eliaerts
- Department of Drugs and Toxicology, National Institute of Criminalistics and Criminology, Brussels, Belgium; AXES Research Group, Chemistry Department, University of Antwerp, Antwerp, Belgium.
| | - N Meert
- Department of Drugs and Toxicology, National Institute of Criminalistics and Criminology, Brussels, Belgium
| | - F Van Durme
- Department of Drugs and Toxicology, National Institute of Criminalistics and Criminology, Brussels, Belgium
| | - P Dardenne
- Walloon Agricultural Research Centre, Gembloux, Belgium
| | - S Charles
- Department of Analytical Chemistry, National Institute of Criminalistics and Criminology, Brussels, Belgium
| | - K De Wael
- AXES Research Group, Chemistry Department, University of Antwerp, Antwerp, Belgium
| | - N Samyn
- Department of Drugs and Toxicology, National Institute of Criminalistics and Criminology, Brussels, Belgium
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Pouvrasseau F, Charles S, Monacelli E, Routhier F, Malafosse B. Évaluation posturale sur fauteuil roulant : évaluation de faisabilité de la plateforme Virtual Fauteuil. Neurophysiol Clin 2019. [DOI: 10.1016/j.neucli.2019.10.029] [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] Open
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Graham J, Huo M, Birditt K, Charles S, Fingerman K. INTERPERSONAL TENSIONS AND PAIN AMONG OLDER ADULTS: THE MEDIATING ROLE OF NEGATIVE MOOD. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3568] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Graham
- The University of Texas at Austin
| | - M Huo
- The University of Texas at Austin
| | | | - S Charles
- The University of California, Irvine
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Charles S, Hong J. SOCIAL NETWORKS AND DAILY EMOTIONAL EXPERIENCES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.3189] [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: 11/12/2022] Open
Affiliation(s)
- S Charles
- The University of California, Irvine, Irvine, California, United States
| | - J Hong
- University of California, Irvine, Irvine, CA, USA
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Charles S, Hong JH, Leger KA, Fingerman K. GETTING BY WITH A LITTLE HELP FROM MY FRIENDS: FUNCTIONAL LIMITATIONS AND DAILY EMOTIONAL EXPERIENCES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.055] [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)
- S Charles
- The University of California, Irvine, Irvine, California, United States
| | - J H Hong
- University of California, Irvine, CA, USA
| | - K A Leger
- University of California, Irvine, CA, USA
| | - K Fingerman
- The University of Texas at Austin, Austin, TX, USA
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Vidal P, Ronzitti G, Collaud F, Sola MS, Collela P, Puzzo F, Verdera HC, Charles S, Vignaud A, Van Wittenberghe L, Gjata B, Gjorgjieva M, Laforêt P, Rajas F, Malfatti E, Comi G, Mingozzi F. Adeno associated vector-based gene therapy strategy for type 3 glycogen storage disease. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Cui J, Sun D, Lu H, Dai R, Xing L, Dong H, Wang L, Wei D, Jiang B, Jiao Y, Jablonski MM, Charles S, Gu W, Chen H. Comparison of effectiveness and safety between conbercept and ranibizumab for treatment of neovascular age-related macular degeneration. A retrospective case-controlled non-inferiority multiple center study. Eye (Lond) 2017; 32:391-399. [PMID: 28937147 PMCID: PMC5805597 DOI: 10.1038/eye.2017.187] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 07/26/2017] [Indexed: 01/11/2023] Open
Abstract
Purpose To compare the efficacy and safety of conbercept and ranibizumab when administered according to a treat-and-extend (TREX) protocol for the treatment of neovascular age-related macular degeneration (AMD) in China. Patients and methods Between May 2014 and May 2015, 180 patients were treated in a 1 : 1 ratio using conbercept or ranibizumab from four hospitals. Patients received either conbercept 0.5 mg or ranibizumab 0.5 mg intravitreal injections. Follow-up time was 1 year and treated based on a TREX approach. Main outcomes and measures include best-corrected visual acuity (BCVA), using Early Treatment Diabetic Retinopathy Study (ETDRS); number of injections; central retinal thickness (CRT); and leakage of choroidal neovascularization before and after the treatment was analyzed by fluorescein fundus angiography and indocyanine green angiography. Results The 1-year visit was completed by 168 (93.3%) of patients. Mean BCVA was equivalent between two cohorts, and were improved by 12.7±7.770 and 12.3±7.269 letters in the conbercept and ranibizumab cohorts, respectively (P=0.624). There was no significant difference in measured CRT, with a mean decrease of 191.5 μm for conbercept and 187.8 μm for ranibizumab (P=0.773). There was a statistically significant difference (P=0.001) between the drugs regarding the number of treatments: 7.4 for conbercept and 8.7 for ranibizumab. The difference in the distribution of injection intervals was statistically significant between two groups (P=0.011). During the study, there were no cases of endophthalmitis or intraocular inflammation. Conclusion Both drugs had equivalent effects in visual and anatomic gains at 1 year when administered. In the conbercept group, longer treatment intervals were achieved with more patients.
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Affiliation(s)
- J Cui
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China.,Department of Orthopedic Surgery and BME-Campbell Clinic, University of Tennessee Health Science Center, Memphis, TN, USA
| | - D Sun
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - H Lu
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China
| | - R Dai
- Department of Ophthalmology, Peking Union Medical College Hospital, Beijing, PR China
| | - L Xing
- Department of Ophthalmology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihaer, Heilongjiang, PR China
| | - H Dong
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China
| | - L Wang
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China
| | - D Wei
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China
| | - B Jiang
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Y Jiao
- Department of Orthopedic Surgery and BME-Campbell Clinic, University of Tennessee Health Science Center, Memphis, TN, USA
| | - M M Jablonski
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - S Charles
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN, USA.,Charles Retina Institute, Germantown, TN, USA
| | - W Gu
- Department of Orthopedic Surgery and BME-Campbell Clinic, University of Tennessee Health Science Center, Memphis, TN, USA.,Research Service, Veterans Affairs Medical Center, Memphis TN, USA
| | - H Chen
- Center of Integrative Research, The First Hospital of Qiqihaer City, Qiqihaer, Heilongjiang, PR China
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Henry Y, Piscart C, Charles S, Colinet H. Combined effect of temperature and ammonia on molecular response and survival of the freshwater crustacean Gammarus pulex. Ecotoxicol Environ Saf 2017; 137:42-48. [PMID: 27912081 DOI: 10.1016/j.ecoenv.2016.11.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 09/01/2016] [Revised: 11/17/2016] [Accepted: 11/19/2016] [Indexed: 06/06/2023]
Abstract
Freshwater ecosystems are experiencing mounting pressures from agriculture, urbanization, and climate change, which could drastically impair aquatic biodiversity. As nutrient inputs increase and temperatures rise, ammonia (NH3) concentration is likely to be associated with stressful temperatures. To investigate the interaction between NH3 and temperature on aquatic invertebrate survival, we performed a factorial experiment on the survival and molecular response of Gammarus pulex, with temperature (10, 15, 20, and 25°C) and NH3 (0, 0.5, 1, 2, 3, and 4mg NH3/L) treatments. We observed an unexpected antagonistic interaction between temperature and NH3 concentration, meaning survival in the 4mg NH3/L treatment was higher at 25°C than at the control temperature of 10°C. A toxicokinetic-toxicodynamic (TK-TD) model was built to describe this antagonistic interaction. While the No Effect Concentration showed no significant variation across temperatures, the 50% lethal concentration at the end of the experiment increased from 2.7 (2.1-3.6) at 10°C to 5.5 (3.5- 23.4) mg NH3/L at 25°C. Based on qPCR data, we associated these survival patterns to variations in the expression of the hsp70 gene, a generic biomarker of stress. However, though there was a 14-fold increase in hsp70 mRNA expression for gammarids exposed to 25°C compared to controls, NH3 concentration had no effect on hsp70 mRNA synthesis across temperatures. Our results demonstrate that the effects of combined environmental stressors, like temperature and NH3, may strongly differ from simple additive effects, and that stress response to temperature can actually increase resilience to nutrient pollution in some circumstances.
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Affiliation(s)
- Y Henry
- Université Rennes 1, UMR CNRS 6553 Ecobio, 263 avenue du Général Leclerc, CS 74205, 35042 Rennes Cedex, France.
| | - C Piscart
- Université Rennes 1, UMR CNRS 6553 Ecobio, 263 avenue du Général Leclerc, CS 74205, 35042 Rennes Cedex, France.
| | - S Charles
- Univ Lyon, Université Lyon 1, UMR CNRS 5558, Laboratoire de Biométrie et Biologie Évolutive, F-69100 Villeurbanne, France
| | - H Colinet
- Université Rennes 1, UMR CNRS 6553 Ecobio, 263 avenue du Général Leclerc, CS 74205, 35042 Rennes Cedex, France
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Charles S, Rempel G, Rogers L, Rankin K, Williams E, Schuh M, Dragieva D, Mustafa S, Anthony S, Jelen A, Kaufman M, Kovacs A, McCrindle B, Nicholas D, Oechslin E, Sananes R, Mackie A. TEENS WITH CONGENITAL HEART DISEASE IN TRANSITION FROM PEDIATRIC TO ADULT CARE: QUALITATIVE EVALUATION OF NURSE-LED INTERVENTION TO SUPPORT TRANSITION READINESS. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.263] [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: 10/20/2022] Open
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Kyte B, Ifebi E, Shrestha S, Charles S, Liu F, Zhang J. High red blood cell folate is associated with an increased risk of death among adults with diabetes, a 15-year follow-up of a national cohort. Nutr Metab Cardiovasc Dis 2015; 25:997-1006. [PMID: 26474724 DOI: 10.1016/j.numecd.2015.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 06/19/2015] [Accepted: 08/17/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND AIM To describe the mortality and fatality of diabetes and assess their relationship with the level of red blood cell (RBC) folate. METHODS AND RESULT We analyzed the data of 526 adults with diabetes who participated in the National Health and Nutrition Examination Survey (1991-1994) as the baseline examination, and were followed up through December 31, 2006. Estimates of the hazard ratios (HRs) of selected death causes for individuals with different levels of RBC folate were obtained from Cox proportional hazards regression. A total of 295 deaths were recorded by the end of a 15-year follow-up with a mortality rate of 58.48 per 1000 person year (py). Diabetes was listed as a contributing cause for 136 deaths, accounting for 46.1% of the total deaths with a fatality rate 26.96 per 1000 py. Mortality rate for all-cause in the group with upper quartile of RBC folate was almost twice as high as that among the group with lower quartile, 82.75 vs. 44.10 per 1000 py. After adjusting for covariates, including serum concentration of vitamin B12, cotinine, homocysteine and the history of cardio-cerebral vascular diseases assessed at the baseline, the HRs for dying from any causes were 1.00 (reference), 1.82 (95% CI = 1.25-2.66) and 2.10 (1.37-3.20) among diabetic adults with lower, intermediate, and upper quartiles of RBC folate. CONCLUSION Diabetes was listed as a contributing cause for less than half of the deaths among adults with diabetes after 15+ years of follow-up; high RBC folate concentration was associated with an elevated risk of death among adults with diabetes.
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Affiliation(s)
- B Kyte
- Department of Epidemiology, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA
| | - E Ifebi
- Department of Epidemiology, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA
| | - S Shrestha
- Department of Epidemiology, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA
| | - S Charles
- Department of Environmental Health Sciences, Jiann-Ping Hsu College of Public Health, Georgia Southern University, GA 30460, USA
| | - F Liu
- Veterans Affairs Medical Center - Augusta, GA 30904, USA
| | - J Zhang
- Department of Epidemiology, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA.
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Duboys S, Charles S, Hainaut E, Couderc E, Beby-Defaux A, Guillet G. Tropisme exclusif de HPV 134 sur un hamartome verruco-sébacé. Ann Dermatol Venereol 2014. [DOI: 10.1016/j.annder.2014.09.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Charles S, Hainaut E, Cante V, Valette C, Levillain P, Guillet G. Dermatoneuro syndrome au cours d’un scléromyxœdème : efficacité des plasmaphérèses et des immunoglobulines intraveineuses. Ann Dermatol Venereol 2014; 141:523-7. [DOI: 10.1016/j.annder.2014.04.123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/12/2014] [Accepted: 04/02/2014] [Indexed: 10/25/2022]
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Sigler EJ, Randolph JC, Calzada JI, Charles S. Smoking and choroidal thickness in patients over 65 with early-atrophic age-related macular degeneration and normals. Eye (Lond) 2014; 28:838-46. [PMID: 24833184 DOI: 10.1038/eye.2014.100] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 01/26/2014] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE To compare macular choroidal thickness between cigarette smokers, those with a history of smoking, and nonsmokers in patients over 65 years of age with early-atrophic age-related macular degeneration (AMD) and normals. METHODS Prospective, consecutive, observational case series. Enhanced depth imaging spectral domain optical coherence tomography 12-line radial scans were performed and choroidal thickness manually quantified at 84 points in the central 3 mm of the macula. Data of normals, soft drusen alone, and soft drusen with additional features of early AMD were compared. A multivariate analysis of variance (MANOVA) model, controlling for age, was constructed to evaluate the effect of smoking history and AMD features on choroidal thickness. RESULTS A history of smoking was significantly associated with a thinner choroid across all patients via logistic regression (P=0.004; O.R.=12.4). Mean macular choroidal thickness was thinner for smokers (148±63 μm) than for nonsmokers (181±65 μm) among all diagnosis categories (P=0.003). Subgroup analysis of patients with AMD features revealed a similar decreased choroidal thickness in smokers (121±41 μm) compared with nonsmokers (146±46 μm, P=0.006). Bivariate analysis revealed an association between increased pack-years of smoking and a thin choroid across all patients (P<0.001) and among patients with features of early AMD (P<0.001). Both the presence of features of macular degeneration (P<0.001) and a history of smoking (P=0.024) were associated with decreased choroidal thickness in a MANOVA model. CONCLUSION Chronic cigarette smoke exposure may be associated with decreased choroidal thickness. There may be an anatomic sequelae to chronic tobacco smoke exposure that underlies previously reported AMD risk.
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Affiliation(s)
- E J Sigler
- 1] Charles Retina Institute, Memphis, TN, USA [2] Division of Vitreoretinal Surgery, Department of Ophthalmology, Memphis Hamilton Eye Institute, University of Tennessee, Memphis, TN, USA
| | - J C Randolph
- 1] Charles Retina Institute, Memphis, TN, USA [2] Division of Vitreoretinal Surgery, Department of Ophthalmology, Memphis Hamilton Eye Institute, University of Tennessee, Memphis, TN, USA
| | - J I Calzada
- 1] Charles Retina Institute, Memphis, TN, USA [2] Division of Vitreoretinal Surgery, Department of Ophthalmology, Memphis Hamilton Eye Institute, University of Tennessee, Memphis, TN, USA
| | - S Charles
- 1] Charles Retina Institute, Memphis, TN, USA [2] Division of Vitreoretinal Surgery, Department of Ophthalmology, Memphis Hamilton Eye Institute, University of Tennessee, Memphis, TN, USA
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Konto M, Biu AA, Ahmed MI, Charles S. Prevalence and seasonal abundance of ticks on dogs and the role of Rhipicephalus sanguineus in transmitting Babesia species in Maidugiri, North-Eastern Nigeria. Vet World 2014. [DOI: 10.14202/vetworld.2014.119-124] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Charles S, Cante V, Levillain P, Guillet G. Mucinose papuleuse d’évolution favorable sous Soriatane®. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.339] [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: 10/26/2022]
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Charles S, Luca L, Roblot P, Landron C. Vascularite secondaire à un traitement par thalidomide chez une patiente traitée pour aphtose buccale chronique récidivante. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.212] [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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22
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Kielbassa J, Charles S, Delignette-Muller ML. The importance of incorporating age and sex when backcalculating length in bullhead Cottus gobio. J Fish Biol 2011; 78:1492-1507. [PMID: 21539555 DOI: 10.1111/j.1095-8649.2011.02956.x] [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] [Indexed: 05/30/2023]
Abstract
The present study backcalculated body length for a data set of a bullhead Cottus gobio population located at different sampling sites in a river network. Model comparison between various growth models, which included successively new parameters, showed the effect and importance of taking sex, age and the location in the river network into account. The data sets obtained by backcalculation were fitted by the von Bertalanffy growth function, which revealed the effect of the backcalculation formula on the estimation of the von Bertalanffy growth parameters. Fitting results and parameter estimates showed again the importance of incorporating age and sex when backcalculating body length in the C. gobio population studied.
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Abstract
UNLABELLED We examined concentrations and migration of volatile organic compounds (VOCs) in ten mixed-use buildings in southeast Michigan, USA. In an office and work zone in each building, air exchange rates (AERs) were measured using perfluorocarbon tracers, and over 96 VOC species were measured by GC/MS over a 7-day period. VOCs were then apportioned to sources in offices, work zones, and outdoors using a two-zone mass balance model. AERs averaged 3.9 h (0.2-14.2 h) in offices and 1.9 h (0.4-3.5 h) in work zones. The dominant VOCs included aromatics, terpenes and alkanes. VOC concentrations were uniform in the smaller spaces, and more variable in some of the very large spaces. Apportionments depended on the VOC and building, but emissions in industrial zones of buildings often migrated to office areas where they frequently accounted for the bulk of VOC concentrations. Outdoor sources accounted for most benzene and carbon tetrachloride, and a small fraction of aromatic and aliphatic compounds. This study shows that pollutant migration can be a significant and not uncommon problem in mixed-use buildings, and it demonstrates the need for better control of emissions and pollutant migration. PRACTICAL IMPLICATIONS Pollutant exposures in industrial, commercial, and institutional buildings arise from indoor and outdoor sources that can be identified, apportioned, and controlled with knowledge of emission sources and building airflows. We show that multi-tracer techniques are an effective and practical means of determining airflows and exchange rates in large buildings. In examining a set of mixed-use buildings, a substantial fraction of VOC exposures in otherwise relatively 'clean' offices is due to pollutant migration from 'dirty' zones of the building. This indicates the need for corrective actions to minimize exposures of office workers that are unwanted and probably unknown to building managers. These actions should include better control of emissions, isolation or control of air and pollutant flows between building zones, and documentation of the effectiveness of such measures when strong emission sources are present.
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Affiliation(s)
- C Jia
- School of Public Health, University of Memphis, Memphis, TN, USA
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Kielbassa J, Delignette-Muller M, Pont D, Charles S. Application of a temperature-dependent von Bertalanffy growth model to bullhead (Cottus gobio). Ecol Modell 2010. [DOI: 10.1016/j.ecolmodel.2010.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sosnick T, Charles S, Stubbs G, Yau P, Bradbury EM, Timmins P, Trewhella J. Orienting rigid and flexible biological assemblies in ferrofluids for small-angle neutron scattering studies. Biophys J 2010; 60:1178-89. [PMID: 19431809 DOI: 10.1016/s0006-3495(91)82153-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Small-angle scattering from macromolecules in solution is widely used to study their structures, but the information content is limited because the molecules are generally randomly oriented and hence the data are spherically averaged. The use of oriented rodlike structures for scattering, as in fiber diffraction, greatly increases the amount of structural detail that can be obtained. A new technique using a ferromagnetic fluid has been developed to align elongated structures independent of their intrinsic magnetic properties. This technique is ideal for small-angle neutron scattering because the scattering from the ferrofluid particles can be reduced significantly by matching the neutron scattering length density of the particles to a D(2)O solvent ("contrast matching"). The net result is scattering primarily from the ordered biological assembly in a solution environment that can be adjusted to physiological pH and ionic strength. Scattering results from ordered tobacco mosaic virus, tobacco rattle virus, and chromain fibers are presented.
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Affiliation(s)
- T Sosnick
- Life Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Charles S. 174 Poster Introducing an Irish Community Phase 4 Training Programme. Eur J Cardiovasc Nurs 2010. [DOI: 10.1016/s1474-5151(10)60134-x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S. Charles
- St Columcille's Hospital, Dublin, Ireland
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Carmichael F, Charles S, Hulme C. Who will care? Employment participation and willingness to supply informal care. J Health Econ 2010; 29:182-90. [PMID: 20004991 DOI: 10.1016/j.jhealeco.2009.11.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Revised: 11/01/2009] [Accepted: 11/06/2009] [Indexed: 05/17/2023]
Abstract
The impact of informal care responsibilities on the willingness and ability of caregivers to undertake paid employment has been the subject of a number of studies. In contrast, the effect of employment status on willingness to undertake informal care has been less well explored. This paper concentrates on this less-studied direction of causality using the data provided by 15 waves of the British Household Panel Survey. We find that employment participation and earnings both impact negatively on willingness to supply informal care. This evidence has implications for health and social care policy since informal care has been shown to be a significant substitute for formal long-term care.
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Affiliation(s)
- F Carmichael
- Birmingham Business School, University of Birmingham, University House, Edgbaston, Birmingham B15 2TT, UK.
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Gerard X, Vignaud L, Charles S, Pinset C, Scherman D, Kichler A, Israeli D. T.P.6.06 Real-time monitoring of cell transplantation in mouse dystrophic muscles by a secreted alkaline phosphatase reporter gene. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Kulshreshtha B, Philibert P, Eunice M, Audran F, Paris F, Khurana ML, Ammini AC, Charles S. Phenotype, hormonal profile and genotype of subjects with partial androgen insensitivity syndrome: report of a family with four adult males and one child with disorder of sexual differentiation. Andrologia 2009; 41:257-63. [DOI: 10.1111/j.1439-0272.2009.00921.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Arther RG, Charles S, Ciszewski DK, Davis WL, Settje TS. Imidacloprid/moxidectin topical solution for the prevention of heartworm disease and the treatment and control of flea and intestinal nematodes of cats. Vet Parasitol 2005; 133:219-25. [PMID: 16198823 DOI: 10.1016/j.vetpar.2005.04.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sixteen controlled laboratory studies, involving 420 kittens and cats, were conducted to evaluate the efficacy and safety of topically applied formulations of imidacloprid and moxidectin for the prevention of feline heartworm disease, treatment of flea infestations and treatment and control of intestinal nematodes. Unit-dose applicators and the dosing schedule used in these studies were designed to provide a minimum of 10mg imidacloprid and 1mg moxidectin/kg. Treatments were applied topically by parting the hair at the base of the skull and applying the solution on the skin. Imidacloprid treatment alone did not display activity against Dirofilaria immitis or intestinal nematodes and moxidectin treatment alone provided little or no activity against adult Ctenocephalides felis infestations. The formulation containing 10% imidacloprid and 1% moxidectin was 100% efficacious against the development of adult D. immitis infections when cats were treated 30 days after inoculation with third-stage larvae. A single treatment with this formulation also provided 88.4-100% control of adult C. felis for 35 days. Imidacloprid/moxidectin was 100% efficacious against adult Toxocara cati and 91.0-98.3% efficacious against immature adults and fourth-stage T. cati larvae. The formulation provided 98.8-100% efficacy against adult Ancylostoma and immature adults and third-stage A. tubaeforme larvae. Monthly topical application with 10% imidacloprid/1% moxidectin is convenient, efficacious and safe for the prevention of feline heartworm disease, treatment of flea infestation and for the treatment and control of intestinal nematode infections of cats.
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Affiliation(s)
- R G Arther
- Bayer HealthCare, Animal Health Division, 12707W. 63rd St., Shawnee Mission, KS 66216, USA.
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Charles S, Ferreol M, Chaumot A, Péry A. Food availability effect on population dynamics of the midge Chironomus riparius: a Leslie modeling approach. Ecol Modell 2004. [DOI: 10.1016/j.ecolmodel.2003.10.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Ecotoxicology supplies environmental quality criteria mainly based on the potential effects of contaminants on demographic rates of natural populations. Possible impacts through pollutant-induced disruptions of spatial behaviors are totally neglected. Should it be significant to take into account this "second way"? We developed the example of a hypothetical brown trout population living in a river network. We analyzed how behaviors of toxic avoidance or attraction during the spawning migration alter the impact of pollution. Attraction behaviors basically enhanced the bad effect of pollution. More interesting, avoidance behaviors can weakly lift the asymptotic population growth rate, while if there is density-dependent effects on recruitment, pollutant avoidance can actually lead to a substantial drop in equilibrium size. Our model allowed comparing the relative significance of migratory and demographic disruptions for explaining the population impacts of pollution; we thus stress on the need of increasing efforts to develop knowledge relative to toxicant-induced spatial behaviors and to integrate such effects in the definition of environmental quality criteria.
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Affiliation(s)
- A Chaumot
- UMR CNRS 5558, Université Claude Bernard-Lyon 1, 43 Boulevard du 11 novembre 1918, Batiment 741-711 FR-69622, Cedex, Villeurbanne, France.
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Reinemeyer CR, Charles S. Evaluation of the efficacy of a combination of imidacloprid and moxidectin against immature Toxocara catiin cats. Parasitol Res 2003; 90 Suppl 3:S140-1. [PMID: 12928882 DOI: 10.1007/s00436-003-0918-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C R Reinemeyer
- East Tennessee Clinical Research Inc., Knoxville, Tennessee, USA
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Le Hécho I, Pecheyran C, Charles S, Monperrus M, Pavageau MP, Casiot C, Potin-Gautier M, Leblanc M, Donard OF. Biogeochemical cycle and speciation of As and Cr in an acid mine environment : The case of Carnoulès Creek, France. ACTA ACUST UNITED AC 2003. [DOI: 10.1051/jp4:20030406] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Mishra B, Srinivasa H, Muralidharan S, Charles S, Macaden RS. A hospital based study of hepatitis E by serology. Indian J Med Microbiol 2003; 21:115-7. [PMID: 17642994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Hepatitis E virus is recently recognised as an important cause of non-A, non-B hepatitis. A total of 569 serum samples were screened for HEV between April 1997 and March 2000, by a commercially available HEV IgM capture ELISA. The diagnosis was invariably acute viral hepatitis for differential diagnosis of jaundice. The percentage of seropositivity was found to be 18.8% in confirmed Hepatitis E cases.
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Affiliation(s)
- B Mishra
- Department of Microbiology, St. John's Medical College, Bangalore - 560034, Karnataka, India
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Mishra B, Srinivasa H, Muralidharan S, Charles S, Macaden RS. A HOSPITAL BASED STUDY OF HEPATITIS E BY SEROLOGY. Indian J Med Microbiol 2003. [DOI: 10.1016/s0255-0857(21)03133-9] [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: 10/21/2022]
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Charles S. 1214: An investigation into the Number of Cardiac Patients who Return to Work Prior to Phase 3 Cardiac Rehabilitation. Eur J Cardiovasc Nurs 2003. [DOI: 10.1177/147451510300200114] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- S. Charles
- Cardiac Rehabilitation Co-ordinator, Cardiac Rehabilitation Unit, St. Columcille's Hospital, Loughlinstown, Co. Dublin, Ireland
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Charles S, Caulfield J, Brennan R. 1213: An Evaluation of an Outpatient, Multidisciplinary Team Approach to Phase 2 Cardiac Rehabilitation Programme. Eur J Cardiovasc Nurs 2003. [DOI: 10.1177/147451510300200113] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- S. Charles
- Cardiac Rehabilitation Unit, St. Columcille's Hospital, Loughlinstown, Co. Dublin, Ireland
| | - J. Caulfield
- Cardiac Rehabilitation Unit, St. Columcille's Hospital, Loughlinstown, Co. Dublin, Ireland
| | - R. Brennan
- Cardiac Rehabilitation Unit, St. Columcille's Hospital, Loughlinstown, Co. Dublin, Ireland
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To LB, Bashford J, Durrant S, MacMillan J, Schwarer AP, Prince HM, Gibson J, Lewis I, Swart B, Marty J, Rawling T, Ashman L, Charles S, Cohen B. Successful mobilization of peripheral blood stem cells after addition of ancestim (stem cell factor) in patients who had failed a prior mobilization with filgrastim (granulocyte colony-stimulating factor) alone or with chemotherapy plus filgrastim. Bone Marrow Transplant 2003; 31:371-8. [PMID: 12634728 DOI: 10.1038/sj.bmt.1703860] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study assessed the ability of recombinant human stem cell factor (rHuSCF) to mobilize stem cells in 44 patients who had failed a prior mobilization (CD34(+) yield 0.5-1.9 x 10(6)/kg BW) with filgrastim-alone or chemotherapy-plus-filgrastim. The same mobilization regimen was used with the addition of rHuSCF. In the filgrastim-alone group (n=13), rHuSCF 20 microg/kg was started 3 days before filgrastim and continued for the duration of filgrastim. In the chemotherapy-plus-filgrastim group (n=31), rHuSCF 20 microg/kg/day plus filgrastim 5-10 microg/kg/day were administered concurrently. Leukaphereses were continued to a maximum of four procedures or a target of >or=3 x 10(6) CD34(+) cells/kg. In both groups, CD34(+) yield (x 10(6)/kg BW) of the study mobilization was higher than that of the prior mobilization (median: 2.42 vs 0.84 P=0.002 and 1.64 vs 0.99 P=<0.001, respectively). In all 54 and 45% of patients in the filgrastim-alone group and chemotherapy-plus-filgrastim group, respectively, reached the threshold yield of 2 x 10(6)/kg. The probability of a successful mobilization was the same in those with a CD34+ yield of 0.5-0.75 x 10(6)/kg BW in the prior mobilization as in those with 0.76-1.99 x 10(6)/kg BW. Downmodulation of c-kit expression and a lower percentage of Thy-1 positivity in the mobilized CD34(+) cells were noted in the successful mobilizers compared with those in the poor mobilizers. This study shows that rhuSCF is effective in approximately half the patients who had failed a prior mobilization and allows them to proceed to transplant. It also points to the likely role of the SCF/c-kit ligand pair in mobilization.
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Affiliation(s)
- L B To
- Division of Haematology, Hanson Centre for Cancer Research, Adelaide, Australia
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Eisenberg JNS, Wade TJ, Hubbard A, Abrams DI, Leiser RJ, Charles S, Vu M, Saha S, Wright CC, Levy DA, Jensen P, Colford JM. Associations between water-treatment methods and diarrhoea in HIV-positive individuals. Epidemiol Infect 2002; 129:315-23. [PMID: 12405100 PMCID: PMC2869902 DOI: 10.1017/s0950268802007422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
This manuscript extends our previously published work (based on data from one clinic) on the association between three drinking water-treatment modalities (boiling, filtering, and bottling) and diarrhoeal disease in HIV-positive persons by incorporating data from two additional clinics collected in the following year. We conducted a cross-sectional survey of drinking water patterns, medication usage, and episodes of diarrhoea among HIV-positive persons attending clinics associated with the San Francisco Community Consortium. We present combined results from our previously published work in one clinic (n = 226) with data from these two additional clinics (n = 458). In this combined analysis we employed logistic regression and marginal structural modelling of the data. The relative risk of diarrhoea for 'always' vs. 'never' drinking boiled water was 0.68 (95% CI 0.45-1.04) and for 'always' vs. 'never' drinking bottled water was 1.22 (95 % CI 0.82-1.82). Drinking filtered water was unrelated to diarrhoea (1.03 (95% CI 0.78, 1.35) for 'always' vs. 'never' drinking filtered water]. Adjustment for confounding did not have any notable effect on the point estimates (0.61, 1.35 and 0.98 for boiled, bottled, and filtered water respectively, as defined above). The risk of diarrhoea was lower among those consuming boiled water but this finding was not statistically significant. Because of these findings, the importance of diarrhoea in immunocompromised individuals, and the limitations of cross-sectional data further prospective investigations of water consumption and diarrhoea among HIV-positive individuals are needed.
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Affiliation(s)
- J N S Eisenberg
- School of Public Health, University of California, Berkeley, CA 94720-7360, USA
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Abstract
The effects of parasites on the behavior of their hosts are well documented. For example, parasites may affect the habitat selection of the host individual. We used variables aggregation methods to investigate the way in which parasites affect the spatial pattern of susceptible hosts. We developed a simple epidemiological model, taking into account both the reproduction processes of hosts (density-dependent birth and death) and infection, considered separately on two different patches, and the migration of susceptible hosts between these two patches. We used the complete model of three equations to generate an aggregated model describing the dynamics of the combined susceptible and infected host populations. We obtained the basic reproduction ratio (R(0)) from the aggregated model, and then studied the effect of the migratory behavior of susceptible hosts on the ability of the parasite to invade the system. We also used the basic reproduction ratio to investigate the evolution of parasite virulence in relation to the migration decisions of susceptible hosts. We found that host investment in avoidance of the infected patch leads to an increase in optimal virulence if host investment is costly.
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Affiliation(s)
- S Charles
- Université Claude Bernard-Lyon 1, Biométrie - Biologie Evolutive, UMR CNRS 5558, 43 Bd du 11 Novembre 1918, 69522 Villeurbanne, Cedex, France
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Eisenberg JNS, Wade TJ, Charles S, Vu M, Hubbard A, Wright CC, Levy D, Jensen P, Colford JM. Risk factors in HIV-associated diarrhoeal disease: the role of drinking water, medication and immune status. Epidemiol Infect 2002; 128:73-81. [PMID: 11895094 PMCID: PMC2869798 DOI: 10.1017/s0950268801006252] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
In a cross-sectional survey of 226 HIV-infected men, we examined the occurrence of diarrhoea and its relationship to drinking water consumption patterns, risk behaviours, immune status and medication use. Diarrhoea was reported by 47% of the respondents. Neither drinking boiled nor filtered water was significantly associated with diarrhoea (OR = 0.5 [0.2, 1.6], 1.2 [0.6, 2.5] respectively), whereas those that drank bottled water were at risk for diarrhoea (OR = 3.0 [1.1, 7.8]). Overall, 47% always or often used at least one water treatment. Of the 37% who were very concerned about drinking water, 62% had diarrhoea, 70% always or often used at least one water treatment. An increase in CD4 count was protective only for those with a low risk of diarrhoea associated with medication (OR = 0.6 [0.5, 0.9]). A 30% attributable risk to diarrhoea was estimated for those with high medication risk compared to those with low medication risk. The significant association between concern with drinking water and diarrhoea as well as between concern with drinking water and water treatment suggests awareness that drinking water is a potential transmission pathway for diarrhoeal disease. At the same time we found that a significant portion of diarrhoea was associated with other sources not related to drinking water such as medication usage.
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Affiliation(s)
- J N S Eisenberg
- Center for Occupational and Environmental Health, University of California, Berkeley 94720-7360, USA
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Worsfold PJ, Achterberg EP, Bowie AR, Cannizzaro V, Charles S, Costa JM, Dubois F, Pereiro R, San Vicente B, Sanz-Medel A, Vandeloise R, Donckt EV, Wollast P, Yunus S. Integrated luminometer for the determination of trace metals in seawater using fluorescence, phosphorescence and chemiluminescence detection. J Autom Methods Manag Chem 2002; 24:41-47. [PMID: 18924742 PMCID: PMC2562972 DOI: 10.1155/s1463924602000081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The paper describes an integrated luminometer able to perform fluorescence (FL), room temperature phosphorescence (RTP) and chemiluminescence (CL) measurements on seawater samples. The technical details of the instrumentation are presented together with flow injection (FI) manifolds for the determination of cadmium and zinc (by FL), lead (RTP) and cobalt (CL). The analytical figures of merit are given for each manifold and results are presented for the determination of the four trace metals in seawater reference materials (NASS-5, SLEW-2) and Scheldt estuarine water samples.
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Affiliation(s)
- P J Worsfold
- Department of Environmental Sciences, Plymouth Environmental Research Centre, University of Plymouth, Plymouth PL48AA, UK.
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44
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Abstract
Prevention is a better strategy than treating complications after they occur. Prevention approaches must focus on surgical technique, biomaterials, and IOL design aimed at reducing PCO.
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Affiliation(s)
- S Charles
- Department of Ophthalmology, University of Tennessee College of Medicine, Memphis, USA.
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45
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Abstract
Cotton-wool spots are the clinical manifestation of focal infarcts of the retinal nerve fiber layer. They rarely cause significant visual field loss. A large idiopathic cotton-wool spot in a 34-year-old healthy woman caused a nerve fiber bundle visual field defect and an afferent pupillary defect that remained after the cotton-wool spot had disappeared and the retina and optic nerve appeared normal.
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Affiliation(s)
- E Chaum
- Department of Ophthalmology, University of Tennessee, Memphis 38163, USA.
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46
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Abstract
A new mathematical model is proposed to describe the inactivation of viruses at different temperatures. This model takes into account the exponential decrease of the viral titer with time, the inactivation rate being an exponential function of the temperature. A one-step non-linear regression was used to fit oral poliovirus vaccine (OPV) experimental data. In one of the applications of the model, we illustrate the use of our model to compare the accelerated degradation test of OPV new formulations to standard OPV. Such a model is both simple and convenient to use. It should be a useful tool in optimizing formulations for live viral vaccines.
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Affiliation(s)
- C Noël
- Development Department, Aventis Pasteur, 69280, Marcy l'Etoile, France.
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47
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Abstract
A method has been developed to assign the absolute configuration and enantiomeric excess of anabasine based on small amounts of material (in the microgram range), by derivatization with (+)-menthylchloroformate followed by capillary GC analysis of the resulting carbamate(s). This method was applied to three samples of anabasine isolated from Messor and Aphaenogaster ants. In Messor sanctus, only (2'S)-anabasine was present, whereas in Aphaenogaster subterranea and A. miamiana (2'S)-anabasine was determined to have an ee of 78 and 24%, respectively.
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Affiliation(s)
- S Leclercq
- Department of Organic Chemistry, Free University of Brussels, Belgium
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Acot P, Charles S, Delignette-Muller ML. Artificial intelligence and meaning--some philosophical aspects of decision-making. Acta Biotheor 2000; 48:173-9. [PMID: 11291938 DOI: 10.1023/a:1010234707103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Charles S, Bravo De La Parra R, Mallet JP, Persat H, Auger P. Annual spawning migrations in modelling brown trout population dynamics inside an arborescent river network. Ecol Modell 2000. [DOI: 10.1016/s0304-3800(00)00277-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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