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Lascarrou JB, Dumas F, Bougouin W, Legriel S, Aissaoui N, Deye N, Beganton F, Lamhaut L, Jost D, Vieillard-Baron A, Nichol G, Marijon E, Jouven X, Cariou A, Agostinucci J, Aissaoui-Balanant N, Algalarrondo V, Alla F, Alonso C, Amara W, Annane D, Antoine C, Aubry P, Azoulay E, Beganton F, Billon C, Bougouin W, Boutet J, Bruel C, Bruneval P, Cariou A, Carli P, Casalino E, Cerf C, Chaib A, Cholley B, Cohen Y, Combes A, Coulaud J, Da Silva D, Das V, Demoule A, Denjoy I, Deye N, Diehl J, Dinanian S, Domanski L, Dreyfuss D, Dubois-Rande J, Dumas F, Duranteau J, Empana J, Extramiana F, Fagon J, Fartoukh M, Fieux F, Gandjbakhch E, Geri G, Guidet B, Halimi F, Henry P, Jabre P, Joseph L, Jost D, Jouven X, Karam N, Lacotte J, Lahlou-Laforet K, Lamhaut L, Lanceleur A, Langeron O, Lavergne T, Lecarpentier E, Leenhardt A, Lellouche N, Lemiale V, Lemoine F, Linval F, Loeb T, Ludes B, Luyt C, Mansencal N, Mansouri N, Marijon E, Maury E, Maxime V, Megarbane B, Mekontso-Dessap A, Mentec H, Mira J, Monnet X, Narayanan K, Ngoyi N, Perier M, Piot O, Plaisance P, Plaud B, Plu I, Raphalen J, Raux M, Revaux F, Ricard J, Richard C, Riou B, Roussin F, Santoli F, Schortgen F, Sharshar T, Sideris G, Spaulding C, Teboul J, Timsit J, Tourtier J, Tuppin P, Ursat C, Varenne O, Vieillard-Baron A, Voicu S, Wahbi K, Waldmann V. Differential Effect of Targeted Temperature Management Between 32 °C and 36 °C Following Cardiac Arrest According to Initial Severity of Illness: Insights From Two International Data Sets. Chest 2022; 163:1120-1129. [PMID: 36445800 DOI: 10.1016/j.chest.2022.10.023] [Citation(s) in RCA: 3] [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] [Received: 06/05/2022] [Revised: 10/10/2022] [Accepted: 10/23/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Recent guidelines have emphasized actively avoiding fever to improve outcomes in patients who are comatose following resuscitation from cardiac arrest (ie, out-of-hospital cardiac arrest). However, whether targeted temperature management between 32 °C and 36 °C (TTM32-36) can improve neurologic outcome in some patients remains debated. RESEARCH QUESTION Is there an association between the use of TTM32-36 and outcome according to severity assessed at ICU admission using a previously derived risk score? STUDY DESIGN AND METHODS Data prospectively collected in the Sudden Death Expertise Center (SDEC) registry (France) between May 2011 and December 2017 and in the Resuscitation Outcomes Consortium Continuous Chest Compressions (ROC-CCC) trial (United States and Canada) between June 2011 and May 2015 were used for this study. Severity at ICU admission was assessed through a modified version of the Cardiac Arrest Hospital Prognosis (mCAHP) score, divided into tertiles of severity. The study explored associations between TTM32-36 and favorable neurologic status at hospital discharge by using multiple logistic regression as well as in tertiles of severity for each data set. RESULTS A total of 2,723 patients were analyzed in the SDEC data set and 4,202 patients in the ROC-CCC data set. A favorable neurologic status at hospital discharge occurred in 728 (27%) patients in the French data set and in 1,239 (29%) patients in the North American data set. Among the French data set, TTM32-36 was independently associated with better neurologic outcome in the tertile of patients with low (adjusted OR, 1.63; 95% CI, 1.15-2.30; P = .006) and high (adjusted OR, 1.94; 95% CI, 1.06-3.54; P = .030) severity according to mCAHP at ICU admission. Similar results were observed in the North American data set (adjusted ORs of 1.36 [95% CI, 1.05-1.75; P = .020] and 2.42 [95% CI, 1.38-4.24; P = .002], respectively). No association was observed between TTM32-36 and outcome in the moderate groups of the two data sets. INTERPRETATION TTM32-36 was significantly associated with a better outcome in patients with low and high severity at ICU admission assessed according to the mCAHP score. Further studies are needed to evaluate individualized temperature control following out-of-hospital cardiac arrest.
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Affiliation(s)
- Jean Baptiste Lascarrou
- Université Paris Cité, INSERM, PARCC, Paris, France; Médecine Intensive Réanimation, University Hospital Center, Nantes, France; AfterROSC Network Group, Paris, France.
| | - Florence Dumas
- Université Paris Cité, INSERM, PARCC, Paris, France; Emergency Department, Cochin University Hospital, APHP, Paris, France
| | - Wulfran Bougouin
- Université Paris Cité, INSERM, PARCC, Paris, France; AfterROSC Network Group, Paris, France; Medical-Surgical Intensive Care Unit, Hopital Privé Jacques Cartier, Massy, France
| | - Stephane Legriel
- Université Paris Cité, INSERM, PARCC, Paris, France; AfterROSC Network Group, Paris, France; Medical Surgical Intensive Care Unit, Mignot Hospital, Le Chesnay, France
| | - Nadia Aissaoui
- Université Paris Cité, INSERM, PARCC, Paris, France; AfterROSC Network Group, Paris, France; Medical Intensive Care Unit, Cochin Hospital (APHP) and University of Paris, Paris, France
| | - Nicolas Deye
- AfterROSC Network Group, Paris, France; Medical Intensive Care Unit, Lariboisière University Hospital, INSERM U942, Paris, France
| | | | - Lionel Lamhaut
- AfterROSC Network Group, Paris, France; SAMU de Paris-DAR Necker University Hospital-Assistance, Paris, France
| | - Daniel Jost
- Brigade des Sapeurs-Pompiers de Paris, Paris, France
| | - Antoine Vieillard-Baron
- Medical Intensive Care Unit, Ambroise Paré University Hospital, APHP, Boulogne-Billancourt, France
| | - Graham Nichol
- University of Washington-Harborview Center for Prehospital Emergency Care, University of Washington, Seattle, WA
| | - Eloi Marijon
- Université Paris Cité, INSERM, PARCC, Paris, France
| | | | - Alain Cariou
- Université Paris Cité, INSERM, PARCC, Paris, France; AfterROSC Network Group, Paris, France; Medical Intensive Care Unit, Cochin Hospital (APHP) and University of Paris, Paris, France
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Abdelsalam S, Hemeda O, Sharshar T, Henaish A, Ali M. Defect probing using positron annihilation and dielectric spectroscopy of PVA/Al thin films. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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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Premachandra A, Mazeraud A, Schimpf C, Tortuyaux R, Legouy C, Daniel M, Sauvageon X, Benmostefa A, Sermet A, Sharshar T, Wolff M. Is amoxicillin/clavulanic acid the best option to treat early-onset ventilator-acquired pneumonia in brain-injured patients. J Glob Antimicrob Resist 2021; 27:247-249. [PMID: 34715350 DOI: 10.1016/j.jgar.2021.10.013] [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] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/19/2021] [Indexed: 11/28/2022] Open
Affiliation(s)
- A Premachandra
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France.
| | - A Mazeraud
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - C Schimpf
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - R Tortuyaux
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - C Legouy
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - M Daniel
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - X Sauvageon
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - A Benmostefa
- GHU Paris Psychiatrie et Neuroscience, Microbiology Department, 1 rue Cabanis, 75014, Paris, France
| | - A Sermet
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - T Sharshar
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
| | - M Wolff
- GHU Paris Psychiatrie et Neuroscience, Neurointensive Care and Neuroanesthesia Department, 1 rue Cabanis, 75014, Paris, France
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Bouchereau E, Sharshar T, Legouy C. Delayed awakening in neurocritical care. Rev Neurol (Paris) 2021; 178:21-33. [PMID: 34392974 DOI: 10.1016/j.neurol.2021.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023]
Abstract
Delayed awakening is defined as a persistent disorder of arousal or consciousness 48 to 72h after sedation interruption in critically ill patients. Delayed awakening is either a component of coma or delirium. It results in longer hospital stays and increased mortality. It is therefore a diagnostic, therapeutic and prognostic emergency. In severe brain injured patients, delayed awakening may be related to the primary neurological injury or to secondary systemic insults related to organ failure associated with intensive care. In the present review, we propose diagnostic, therapeutic and prognostic algorithms for managing delayed awaking in neuro-ICU brain injured patients.
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Affiliation(s)
- E Bouchereau
- G.H.U Paris Psychiatry & Neurosciences, department of Neurocritical care, Service d'Anesthésie-Réanimation Neurochirurgicale, 1, rue Cabanis, 75674 Paris Cedex 14, France; INSERM U1266, FHU NeuroVasc, Institut de Psychiatrie et Neuroscience de Paris, Paris, France
| | - T Sharshar
- G.H.U Paris Psychiatry & Neurosciences, department of Neurocritical care, Service d'Anesthésie-Réanimation Neurochirurgicale, 1, rue Cabanis, 75674 Paris Cedex 14, France; INSERM U1266, FHU NeuroVasc, Institut de Psychiatrie et Neuroscience de Paris, Paris, France.
| | - C Legouy
- G.H.U Paris Psychiatry & Neurosciences, department of Neurocritical care, Service d'Anesthésie-Réanimation Neurochirurgicale, 1, rue Cabanis, 75674 Paris Cedex 14, France
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Birnbaum S, Porcher R, Portero P, Clair B, Demeret S, Eymard B, Gargiulo M, Louët E, Berrih-Aknin S, Le Panse R, Aegerter P, Hogrel JY, Sharshar T. Home-based exercise in autoimmune myasthenia gravis: A randomized controlled trial. Neuromuscul Disord 2021; 31:726-735. [PMID: 34304969 DOI: 10.1016/j.nmd.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
The tolerance of exercise and its effects on quality of life in myasthenia gravis are not currently backed up by strong evidence. The aim of this study was to determine whether exercise as an adjunct therapy is well tolerated and can improve health-related quality of life (HRQoL) in stabilized, generalized autoimmune myasthenia gravis (gMG). We conducted a parallel-group, multi-center prospective RCT using computer-generated block randomization. Adults with stabilized, gMG, and no contra-indication to exercise, were eligible. Participants received usual care alone or usual care and exercise. The exercise intervention consisted of 3-weekly 40 min sessions of an unsupervised, moderate-intensity home rowing program over 3 months. The primary endpoint was the change in HRQoL from randomization to post-intervention. Assessor-blinded secondary endpoints were exercise tolerance and effects on clinical, psychological and immunological status. Of 138 patients screened between October 2014 and July 2017, 45 were randomly assigned to exercise (n = 23) or usual care (n = 20). Although exercise was well tolerated, the intention-to-treat analysis revealed no evidence of improved HRQoL compared to usual care (MGQOL-15-F; mean adjusted between-groups difference of -0.8 points, 95%CI -5.4 to 3.7). Two patients hospitalized for MG exacerbation were from the usual care group.
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Affiliation(s)
| | - R Porcher
- Hotel-Dieu Hospital Clinical Epidemiology Centre, Paris, France
| | - P Portero
- Université Paris-Est, Creteil, France
| | - B Clair
- APHP, Assistance Publique - Hopitaux de Paris, France
| | - S Demeret
- APHP, Assistance Publique - Hopitaux de Paris, France
| | - B Eymard
- Paris Descartes University Institute of Psychology, Paris, France
| | | | - E Louët
- Institute of Myology, Paris, France
| | | | - R Le Panse
- Paris Descartes University Institute of Psychology, Paris, France
| | - P Aegerter
- APHP, Assistance Publique - Hopitaux de Paris, France
| | | | - T Sharshar
- GHU-Psychiatrie & Neurosciences site Sainte-Anne 75014 Paris, France.
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El-Shafei MH, Hassanin AH, Shaalan NM, Sharshar T, El-Moneim AA. Free-standing interconnected carbon nanofiber electrodes: new structural designs for supercapacitor application. Nanotechnology 2020; 31:185403. [PMID: 31952052 DOI: 10.1088/1361-6528/ab6d22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work aims to develop and characterize a new design of free-standing interconnected carbon nanofiber electrodes for supercapacitor application. The fibers are obtained via carbonization of three components of electrospun nanofiber mats based on a polyacrylonitrile polymer (as a carbon backbone precursor), polyvinylalcohol (as a sacrificial copolymer), and 0-1.0 wt% multi-walled carbon nanotubes. Carbonizing these ternary composites results in fibers with about twice as large in surface area and one order of magnitude higher in electrical conductivity than those obtained by the carbonization of neat polyacrylonitrile and/or binary polyacrylonitrile-0-1.0 wt% carbon nanotube mats. The carbonized polyacrylonitrile-polyvinylalcohol-0.3 wt% carbon nanotube mat reveals the highest surface area and electrical conductivity and best capacitive performance. It exhibits energy and power densities of 27.8 Wh kg-1 and 110.59 kW kg-1, respectively, and cyclic stability of 95% after 2000 charge-discharge cycles at a charging current of 1.0 Ag-1. The nanotubes' alignment along the fiber's axis, the formation of fiber-fiber interconnected morphology with more mesopore pollution, and changes in the graphitization degree and defect features of fiber crystallites are the reasons for the observed increase in the electrical conductivity, surface area, and capacitive performance of the carbon fibers. Therefore, the new design represents a potential free-standing carbon nanofiber electrode for future electrochemical double layer capacitor (EDLC) device fabrication.
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Affiliation(s)
- M Hussein El-Shafei
- Material Science and Engineering Department, Egypt-Japan University of Science and Technology, New Borg El Arab, Alexandria 21934, Egypt. Production Engineering and Mechanical Design Department, Mansoura University, El-Mansoura 35516, Egypt
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Al-Saif FA, Alibrahim KA, Sharshar T, Naglah AM, Refat MS, Adam AMA. Positron Annihilation Doppler Broadening Studies on Ruthenium(III) Antibiotic Sulfa-Drug Complexes. Russ J Phys Chem 2019. [DOI: 10.1134/s0036024418130083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Al-Saif FA, Alibrahim KA, Sharshar T, Refat MS. Erratum to: Physicochemical and Spectroscopic Study of Co(II), Ni(II), Cr(III), and Fe(III) Cholyltaurine Adducts. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s107036321811035x] [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: 11/23/2022]
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Louet E, Misdrahi S, Bedos CO, Birnbaum S, Hogrel JR, Portero P, Clair B, Eymard B, Demeret S, Bassez G, Berrih-Aknin S, Jobic A, Aegerter P, Thoumie P, Sharshar T, Gargiulo M. CONGENITAL MYASTHENIC SYNDROMES AND MYASTHENIA. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.092] [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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Azabou E, Rohaut B, Porcher R, Heming N, Kandelman S, Allary J, Moneger G, Faugeras F, Sitt JD, Annane D, Lofaso F, Chrétien F, Mantz J, Naccache L, Sharshar T. Mismatch negativity to predict subsequent awakening in deeply sedated critically ill patients. Br J Anaesth 2018; 121:1290-1297. [PMID: 30442256 DOI: 10.1016/j.bja.2018.06.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 06/14/2018] [Accepted: 06/27/2018] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Mismatch negativity (MMN) is the neurophysiological correlate of cognitive integration of novel stimuli. Although MMN is a well-established predictor of awakening in non-sedated comatose patients, its prognostic value in deeply sedated critically ill patients remains unknown. The aim of this prospective, observational pilot study was to investigate the prognostic value of MMN for subsequent awakening in deeply sedated critically ill patients. METHODS MMN was recorded in 43 deeply sedated critically ill patients on Day 3 of ICU admission using a classical 'odd-ball' paradigm that delivers rare deviant sounds in a train of frequent standard sounds. Individual visual analyses and a group level analysis of recordings were performed. MMN amplitudes were then analysed according to the neurological status (awake vs not awake) at Day 28. RESULTS Median (inter-quartile range) Richmond Assessment Sedation Scale (RASS) at the time of recording was -5 (range, from -5 to -4.5). Visual detection of MMN revealed a poor inter-rater agreement [kappa=0.17, 95% confidence interval (0.07-0.26)]. On Day 28, 30 (70%) patients had regained consciousness while 13 (30%) had not. Quantitative group level analysis revealed a significantly greater MMN amplitude for patients who awakened compared with those who had not [mean (standard deviation) = -0.65 (1.4) vs 0.08 (0.17) μV, respectively; P=0.003). CONCLUSIONS MMN can be observed in deeply sedated critically ill patients and could help predict subsequent awakening. However, visual analysis alone is unreliable and should be systematically completed with individual level statistics.
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Affiliation(s)
- E Azabou
- Department of Physiology, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U 1179, University of Versailles Saint-Quentin en Yvelines, Garches, Paris, France; General Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U1173, University of Versailles Saint-Quentin en Yvelines, Garches, France
| | - B Rohaut
- Department of Neurology, Neuro-ICU, Columbia University, New York, NY, USA
| | - R Porcher
- Center for Clinical Epidemiology, Assistance Publique-Hôpitaux de Paris, Hotel Dieu Hospital, University Paris Descartes, INSERM U1153, Paris, France
| | - N Heming
- General Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U1173, University of Versailles Saint-Quentin en Yvelines, Garches, France
| | - S Kandelman
- Department of Anesthesiology and Intensive Care Medicine, Beaujon Hospital, University of Denis Diderot, Clichy, France
| | - J Allary
- Department of Anesthesiology and Intensive Care Medicine, Beaujon Hospital, University of Denis Diderot, Clichy, France
| | - G Moneger
- General Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U1173, University of Versailles Saint-Quentin en Yvelines, Garches, France
| | - F Faugeras
- Institut du Cerveau et de la Moelle épinière, Paris, France
| | - J D Sitt
- Institut du Cerveau et de la Moelle épinière, Paris, France
| | - D Annane
- General Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U1173, University of Versailles Saint-Quentin en Yvelines, Garches, France
| | - F Lofaso
- Department of Physiology, Assistance Publique-Hôpitaux de Paris, Raymond-Poincaré Hospital, INSERM U 1179, University of Versailles Saint-Quentin en Yvelines, Garches, Paris, France
| | - F Chrétien
- Laboratory of Experimental Neuropathology, Institut Pasteur, Paris, France
| | - J Mantz
- Laboratory of Experimental Neuropathology, Institut Pasteur, Paris, France; Department of Anesthesiology and Intensive Care Medicine, European Hospital Georges Pompidou, Paris Descartes University, Paris, France
| | - L Naccache
- Institut du Cerveau et de la Moelle épinière, Paris, France
| | - T Sharshar
- Laboratory of Experimental Neuropathology, Institut Pasteur, Paris, France; Department of Neuro-Intensive Care Medicine, Sainte-Anne Hospital, Paris-Descartes University, Paris, France; Laboratoire de Neuropathologie Expérimentale, Institut Pasteur, Paris, France.
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Almalki AS, Alhadhrami A, Adam AMA, Grabchev I, Almeataq M, Al-Humaidi JY, Sharshar T, Refat MS. Preparation of elastic polymer slices have the semiconductors properties for use in solar cells as a source of new and renewable energy. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Al-Saif FA, Alibrahim KA, Sharshar T, Refat MS. Physicochemical and Spectroscopic Study of Co(II), Ni(II), Cr(III), and Fe(III) Cholyltaurine Adducts. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363217120362] [Citation(s) in RCA: 4] [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: 11/23/2022]
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Refat MS, Sharshar T, Elsabawy KM, El-Sayed MY, Adam AMA. Synthesis, physicochemical characterization and anticancer screening of sulfa drug ruthenium complexes as anticancer agent. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.006] [Citation(s) in RCA: 13] [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: 11/26/2022]
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Birnbaum S, Saidji N, Portero P, Sharshar T, Hogrel J. MGEX: Myasthenia gravis and exercise, a randomised controlled trial protocol. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.094] [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: 11/25/2022]
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Hassan HE, Refat MS, Sharshar T. Optical and positron annihilation spectroscopic studies on PMMA polymer doped by rhodamine B/chloranilic acid charge transfer complex: Special relevance to the effect of γ-ray irradiation. Spectrochim Acta A Mol Biomol Spectrosc 2016; 159:238-248. [PMID: 26867205 DOI: 10.1016/j.saa.2016.01.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/20/2016] [Accepted: 01/23/2016] [Indexed: 06/05/2023]
Abstract
Polymeric sheets of poly (methylmethaclyerate) (PMMA) containing charge transfer (CT) complex of rhodamine B/chloranilic acid (Rho B/CHA) were synthesized in methanol solvent at room temperature. The systematic analysis done on the Rho B and its CT complex in the form of powder or polymeric sheets confirmed their structure and thermal stability. The IR spectra interpreted the charge transfer mode of interaction between the CHA central positions and the terminal carboxylic group. The polymer sheets were irradiated with 70 kGy of γ radiation using (60)Co source to study the enhanced changes in the structure and optical parameters. The microstructure changes of the PMMA sheets caused by γ-ray irradiation were analyzed using positron annihilation lifetime (PAL) and positron annihilation Doppler broadening (PADB) techniques. The positron life time components (τ(i)) and their corresponding intensities (I(i)) as well as PADB line-shape parameters (S and W) were found to be highly sensitive to the enhanced disorder occurred in the organic chains of the polymeric sheets due to γ-irradiation.
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Affiliation(s)
- H E Hassan
- Cyclotron Facility, Nuclear Research Center, Atomic Energy Authority, Cairo 13759, Egypt.
| | - Moamen S Refat
- Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Al-Hawiah, Taif 21974, Saudi Arabia; Chemistry Department, Faculty of Science, Port Said University, Port Said, Egypt
| | - T Sharshar
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, Egypt; Physics Department, Faculty of Science, Taif University, P.O. Box 888, Al-Hawiah, Taif 21974, Saudi Arabia
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El Sayed Aly MR, Shokry H, Sharshar T, Amin MA. A newly synthesized sulphated 8-hydroxyquinoline derivative to effectively control aluminum corrosion in perchloric acid: Electrochemical and positron annihilation studies. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.11.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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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Stergiou C, Lazaridis K, Zouvelou V, Tzartos J, Mantegazza R, Antozzi C, Andreetta F, Evoli A, Deymeer F, Saruhan-Direskeneli G, Durmus H, Brenner T, Vaknin A, Berrih-Aknin S, Behin A, Sharshar T, De Baets M, Losen M, Martinez-Martinez P, Kleopa KA, Zamba-Papanicolaou E, Kyriakides T, Kostera-Pruszczyk A, Szczudlik P, Szyluk B, Lavrnic D, Basta I, Peric S, Tallaksen C, Maniaol A, Gilhus NE, Casasnovas Pons C, Pitha J, Jakubíkova M, Hanisch F, Bogomolovas J, Labeit D, Labeit S, Tzartos SJ. Titin antibodies in "seronegative" myasthenia gravis--A new role for an old antigen. J Neuroimmunol 2016; 292:108-15. [PMID: 26943968 DOI: 10.1016/j.jneuroim.2016.01.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [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: 12/18/2015] [Accepted: 01/25/2016] [Indexed: 12/11/2022]
Abstract
Myasthenia gravis (MG) is an autoimmune disease caused by antibodies targeting the neuromuscular junction of skeletal muscles. Triple-seronegative MG (tSN-MG, without detectable AChR, MuSK and LRP4 antibodies), which accounts for ~10% of MG patients, presents a serious gap in MG diagnosis and complicates differential diagnosis of similar disorders. Several AChR antibody positive patients (AChR-MG) also have antibodies against titin, usually detected by ELISA. We have developed a very sensitive radioimmunoprecipitation assay (RIPA) for titin antibodies, by which many previously negative samples were found positive, including several from tSN-MG patients. The validity of the RIPA results was confirmed by western blots. Using this RIPA we screened 667 MG sera from 13 countries; as expected, AChR-MG patients had the highest frequency of titin antibodies (40.9%), while MuSK-MG and LRP4-MG patients were positive in 14.6% and 16.4% respectively. Most importantly, 13.4% (50/372) of the tSN-MG patients were also titin antibody positive. None of the 121 healthy controls or the 90 myopathy patients, and only 3.6% (7/193) of other neurological disease patients were positive. We thus propose that the present titin antibody RIPA is a useful tool for serological MG diagnosis of tSN patients.
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Affiliation(s)
- C Stergiou
- Hellenic Pasteur Institute, Athens, Greece; Tzartos NeuroDiagnostics, Athens, Greece
| | | | - V Zouvelou
- Neurology Department, Aeginition Hospital, Athens, Greece
| | - J Tzartos
- Hellenic Pasteur Institute, Athens, Greece; Tzartos NeuroDiagnostics, Athens, Greece
| | - R Mantegazza
- Neurological Institute "C. Besta", Milano, Italy
| | - C Antozzi
- Neurological Institute "C. Besta", Milano, Italy
| | - F Andreetta
- Neurological Institute "C. Besta", Milano, Italy
| | - A Evoli
- Institute of Neurology, Catholic University, Rome, Italy
| | - F Deymeer
- Istanbul University, Istanbul, Turkey
| | | | - H Durmus
- Istanbul University, Istanbul, Turkey
| | - T Brenner
- Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - A Vaknin
- Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | | | - A Behin
- UPMC and INSERM, Paris, France
| | - T Sharshar
- Raymond Poincaré Hospital, Garches, France
| | - M De Baets
- School for Mental Health and Neuroscience, Maastricht University, The Netherlands
| | - M Losen
- School for Mental Health and Neuroscience, Maastricht University, The Netherlands
| | - P Martinez-Martinez
- School for Mental Health and Neuroscience, Maastricht University, The Netherlands
| | - K A Kleopa
- The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
| | | | - T Kyriakides
- The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
| | | | - P Szczudlik
- Department of Neurology, Medical University of Warsaw, Poland
| | - B Szyluk
- Department of Neurology, Medical University of Warsaw, Poland
| | - D Lavrnic
- Neurology Clinic, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - I Basta
- Neurology Clinic, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - S Peric
- Neurology Clinic, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - C Tallaksen
- Norway Department of Neurology, Ullevaal University Hospital, Oslo, Norway; Faculty of Medicine, Olso University, Norway
| | - A Maniaol
- Norway Department of Neurology, Ullevaal University Hospital, Oslo, Norway
| | - N E Gilhus
- Department of Clinical Medicine, University of Bergen, Norway
| | | | - J Pitha
- Department of Neurology and Clinical Neuroscience Center, 1st Faculty of Medicine, Charles University and General Teaching Hospital, Prague, Czech Republic
| | - M Jakubíkova
- Department of Neurology and Clinical Neuroscience Center, 1st Faculty of Medicine, Charles University and General Teaching Hospital, Prague, Czech Republic
| | - F Hanisch
- Universitätsklinikum Halle, Halle, Germany
| | - J Bogomolovas
- Faculty of Clinical Medicine Manheim, University of Heidelberg, Germany
| | - D Labeit
- Faculty of Clinical Medicine Manheim, University of Heidelberg, Germany; Myomedix GmbH, 69151 Neckargemuend, Germany
| | - S Labeit
- Faculty of Clinical Medicine Manheim, University of Heidelberg, Germany
| | - S J Tzartos
- Hellenic Pasteur Institute, Athens, Greece; Tzartos NeuroDiagnostics, Athens, Greece.
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Badran HM, Bin-Jaza AA, Sharshar T. Multivariate Statistical Analysis of High Background Radiation Area on the Hadhramout Coast. Arab J Sci Eng 2016. [DOI: 10.1007/s13369-015-1728-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rocheteau P, Chatre L, Briand D, Mebarki M, Jouvion G, Bardon J, Crochemore C, Serrani P, Lecci PP, Latil M, Matot B, Carlier PG, Latronico N, Huchet C, Lafoux A, Sharshar T, Ricchetti M, Chrétien F. Sepsis induces long-term metabolic and mitochondrial muscle stem cell dysfunction amenable by mesenchymal stem cell therapy. Nat Commun 2015; 6:10145. [PMID: 26666572 PMCID: PMC4682118 DOI: 10.1038/ncomms10145] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [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: 05/11/2015] [Accepted: 11/09/2015] [Indexed: 02/08/2023] Open
Abstract
Sepsis, or systemic inflammatory response syndrome, is the major cause of critical illness resulting in admission to intensive care units. Sepsis is caused by severe infection and is associated with mortality in 60% of cases. Morbidity due to sepsis is complicated by neuromyopathy, and patients face long-term disability due to muscle weakness, energetic dysfunction, proteolysis and muscle wasting. These processes are triggered by pro-inflammatory cytokines and metabolic imbalances and are aggravated by malnutrition and drugs. Skeletal muscle regeneration depends on stem (satellite) cells. Herein we show that mitochondrial and metabolic alterations underlie the sepsis-induced long-term impairment of satellite cells and lead to inefficient muscle regeneration. Engrafting mesenchymal stem cells improves the septic status by decreasing cytokine levels, restoring mitochondrial and metabolic function in satellite cells, and improving muscle strength. These findings indicate that sepsis affects quiescent muscle stem cells and that mesenchymal stem cells might act as a preventive therapeutic approach for sepsis-related morbidity. Sepsis patients often develop muscle atrophy that can last for years. Here the authors show in a mouse model that sepsis causes long-term impairment of the satellite cells, affecting mitochondrial function and energy metabolism, and that injection of mesenchymal stem cells restores satellite cell metabolism and muscle regeneration.
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Affiliation(s)
- P Rocheteau
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - L Chatre
- Department of Developmental and Stem Cell Biology, Institut Pasteur, Stem Cells and Development, 75724 cedex15, Paris, France.,Team Stability of Nuclear and Mitochondrial DNA, CNRS UMR 3525, 75724 cedex15, Paris, France
| | - D Briand
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - M Mebarki
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - G Jouvion
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - J Bardon
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - C Crochemore
- Department of Developmental and Stem Cell Biology, Institut Pasteur, Stem Cells and Development, 75724 cedex15, Paris, France.,Team Stability of Nuclear and Mitochondrial DNA, CNRS UMR 3525, 75724 cedex15, Paris, France
| | - P Serrani
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - P P Lecci
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - M Latil
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France
| | - B Matot
- NMR Laboratory, Institute of Myology, Paris 75013, France.,CEA, I2BM, MIRCen, NMR Laboratory, Paris 75013, France
| | - P G Carlier
- NMR Laboratory, Institute of Myology, Paris 75013, France.,CEA, I2BM, MIRCen, NMR Laboratory, Paris 75013, France
| | - N Latronico
- Anesthesia and Reanimation Department, Department of Surgery, University of Brescia, Brescia 25121, Italy
| | - C Huchet
- INSERM UMR1087/ CNRS UMR6291, Institut du Thorax, Therassay, Université de Nantes, Faculté des Sciences et des Techniques, F44322 Nantes 44000, France
| | - A Lafoux
- INSERM UMR1087/ CNRS UMR6291, Institut du Thorax, Therassay, Université de Nantes, Faculté des Sciences et des Techniques, F44322 Nantes 44000, France
| | - T Sharshar
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France.,Service de réanimation médico-chirurgicale adulte, Hôpital Raymond Poincaré, Garches 92380, France.,Université Versailles Saint Quentin, Versailles 78000, France.,TRIGGERSEP, F-CRIN Network, Versailles 78000, France
| | - M Ricchetti
- Department of Developmental and Stem Cell Biology, Institut Pasteur, Stem Cells and Development, 75724 cedex15, Paris, France.,Team Stability of Nuclear and Mitochondrial DNA, CNRS UMR 3525, 75724 cedex15, Paris, France
| | - F Chrétien
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, 75724 cedex15, Paris, France.,TRIGGERSEP, F-CRIN Network, Versailles 78000, France.,Laboratoire de Neuropathologie, Centre Hospitalier Sainte Anne, Paris 75014, France.,Paris Descartes University, Sorbonne Paris Cité, Paris 75006, France
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El-Mekawy AF, Badran HM, Seddeek MK, Sharshar T, Elnimr T. Assessment of elemental and NROM/TENORM hazard potential from non-nuclear industries in North Sinai, Egypt. Environ Monit Assess 2015; 187:583. [PMID: 26297416 DOI: 10.1007/s10661-015-4813-y] [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: 05/10/2015] [Accepted: 08/12/2015] [Indexed: 06/04/2023]
Abstract
Non-nuclear industries use raw materials containing significant levels of naturally occurring radioactive material (NORM). The processing of these materials may expose workers engaged in or even people living near such sites to technologically enhanced naturally occurring radioactive material (TENORM) above the natural background. Inductively coupled plasma and gamma ray spectrometry have been used to determine major and trace elements and radionuclide concentrations in various samples, respectively, in order to investigate the environmental impact of coal mining and cement plant in North Sinai, Egypt. Generally, very little attention was directed to the large volumes of waste generated by either type of industrial activities. Different samples were analyzed including various raw materials, coal, charcoal, Portland and white cement, sludge, and wastes. Coal mine and cement plant workers dealing with waste and kaolin, respectively, are subjected to a relatively high annual effective dose. One of the important finding is the enhancement of all measured elements and radionuclides in the sludge found in coal mine. It may pose an environmental threat because of its large volume and its use as combustion material. The mine environment may have constituted Al, Fe, Cr, and V pollution source for the local area. Higher concentration of Al, Fe, Mn, B, Co, Cr, Mn, Ni, Sr, V, and TENORM were found in Portland cement and Zn in white cement. Coal has higher concentrations of Al, Fe, B, Co, Cr, and V as well as (226)Ra and (232)Th. The compiled results from the present study and different worldwide investigations demonstrate the obvious unrealistic ranges normally used for (226)Ra and (232)Th activity concentrations in coal and provided ranges for coal, Portland and white cement, gypsum, and limestone.
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Affiliation(s)
- A F El-Mekawy
- Physics Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
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Adam AMA, Sharshar T, Mohamed MA, Ibrahim OB, Refat MS. Study of chemical bonding, physical and biological effect of metformin drug as an organized medicine for diabetes patients with chromium(III) and vanadium(IV) ions. Spectrochim Acta A Mol Biomol Spectrosc 2015; 149:323-332. [PMID: 25965516 DOI: 10.1016/j.saa.2015.04.115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 12/02/2014] [Revised: 03/19/2015] [Accepted: 04/30/2015] [Indexed: 06/04/2023]
Abstract
New vanadium(IV) and chromium(III) complexes of metformin (MFN) were synthesized upon the chemical interaction between vanadyl(II) sulfate monohydrate or chromium(III) chloride hexahydrate with metformin diabetic drug in the media of a pure grade of methanol solvent. The [(VO)2(MFN)2(SO4)2]2H2O and [Cr(MFN)3]·Cl3·6H2O complexes were discussed using microanalytical measurements, molar conductance, spectroscopic (infrared, ESR, XRD, and UV-vis), effective magnetic moment, scanning electron microscopy (SEM), and thermal analyses (TG/DTG). The elemental analysis shows that VO(II) and Cr(III) complexes were associated with 1:1 and 1:3M ratios, respectively. The infrared spectroscopic results data received from the comparison between free MFN free ligand and their vanadyl(II) and chromium(III) complexes were proven that metformin reacted with respected metal ions as a bidentate ligand through its two imino groups. The kinetic thermodynamic parameters were estimated from the DTG curves. The microstructure changes of the VO(II) and Cr(III) complexes have been probed using positron annihilation lifetime (PAL) and positron annihilation Doppler broadening (PADB) techniques. The PAL and PADB line-shape parameters were found to be dependent on the structure, electronic configuration and molecular weight of metal complexes. Antimicrobial activity of the metformin free ligand and its vanadyl(II) and chromium(III) complexes were evaluated against the gram negative and gram positive bacteria strains and different fungal strains. Moderate antimicrobial activity recorded by disk diffusion inhibition growth zone method in vanadyl(II) and chromium(III) complexes compared to metformin free ligand.
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Affiliation(s)
- Abdel Majid A Adam
- Chemistry Department, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia.
| | - T Sharshar
- Physics Department, Faculty of Science, Taif University, P.O. Box 888, Al-Hawiah, Taif 21974, Saudi Arabia; Physics Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Mahmoud A Mohamed
- Chemistry Department, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia; Department of Biochemistry, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Omar B Ibrahim
- Chemistry Department, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia
| | - Moamen S Refat
- Chemistry Department, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia; Department of Chemistry, Faculty of Science, Port Said, Port Said University, Egypt
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Hassan HE, Sharshar T, Badran HM. Reply to the letter-to-the-editor submitted by Dr. M. U. Khandaker at JRNC referring to the article entitled as “Environmental impact of some cement manufacturing plants in Saudi Arabia” J Radioanal Nucl Chem (2014) 302:1103–1117 doi 10.1007/s10967-014-3383-8. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-014-3866-7] [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: 10/24/2022]
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Stare J, Siami S, Trudel E, Prager‐Khoutorsky M, Sharshar T, Bourque C. The Effects of Sepsis on Osmosensory Neurons Mediating Thirst. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.968.17] [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: 11/11/2022]
Affiliation(s)
- J Stare
- Department of PhysiologyMcGill UniversityCanada
- Center for Research in Neuroscience Research Institute ‐ MUHCCanada
| | - S Siami
- Service d'Anesthésie‐Réanimation Centre Hospitalier d'ÉtampesFrance
| | - E Trudel
- Center for Research in Neuroscience Research Institute ‐ MUHCCanada
| | | | - T Sharshar
- Service de Réanimation Médicale Hôpital Raymond PoincaréFrance
| | - C Bourque
- Center for Research in Neuroscience Research Institute ‐ MUHCCanada
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Albogamy N, Sharshar T, Aydarous A. The use of positron annihilation Doppler broadening spectroscopy in the characterization of radiochromic dosimetry films. RADIAT MEAS 2015. [DOI: 10.1016/j.radmeas.2015.02.014] [Citation(s) in RCA: 2] [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: 10/24/2022]
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Al-Dadi MM, Hassan HE, Sharshar T, Arida HA, Badran HM. Environmental impact of some cement manufacturing plants in Saudi Arabia. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3383-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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El-Reefy HI, Badran HM, Sharshar T, Hilal MA, Elnimr T. Factors affecting the distribution of natural and anthropogenic radionuclides in the coastal Burullus Lake. J Environ Radioact 2014; 134:35-42. [PMID: 24657852 DOI: 10.1016/j.jenvrad.2014.02.020] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 02/20/2014] [Accepted: 02/23/2014] [Indexed: 06/03/2023]
Abstract
In the present study, measurements of naturally occurring radioactive materials and (137)Cs activity in sediment were conducted for locations covering the entire Burullus Lake in order to gather information about radionuclides mobility and distribution. Low-background γ-spectrometry was employed to determine the activity concentrations of water and sediment samples. The activity concentrations of (226)Ra and (232)Th are close to uniform distribution in the lake environment. Among the different physical and chemical characteristics measured for water and sediment, only salinity and total organic matter content have the potential to affect the mobility of (137)Cs and (40)K. The results suggest that these two radionuclides are attached to different mobile particulates. Increasing salinity tends to strengthen the adsorption of (137)Cs and solubilization of (40)K in sediment. On the other hand, sediment with high organic matter content traps (137)Cs and (40)K associated particulates to bottom sediment.
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Affiliation(s)
- H I El-Reefy
- Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - H M Badran
- Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Physics Department, Faculty of Science, Taif University, Al-Hawiya, Taif 21974, Saudi Arabia.
| | - T Sharshar
- Physics Department, Faculty of Science, Taif University, Al-Hawiya, Taif 21974, Saudi Arabia; Physics Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - M A Hilal
- Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - T Elnimr
- Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
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Refat MS, Adam AMA, Sharshar T, Saad HA, Eldaroti HH. Utility of positron annihilation lifetime technique for the assessment of spectroscopic data of some charge-transfer complexes derived from N-(1-Naphthyl)ethylenediamine dihydrochloride. Spectrochim Acta A Mol Biomol Spectrosc 2014; 122:34-47. [PMID: 24291622 DOI: 10.1016/j.saa.2013.11.087] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 11/10/2013] [Accepted: 11/13/2013] [Indexed: 06/02/2023]
Abstract
In this work, structural, thermal, morphological, pharmacological screening and positron annihilation lifetime measurements were performed on the interactions between a N-(1-Naphthyl)ethylenediamine dihydrochloride (NEDA·2HCl) donor and three types of acceptors to characterize these CT complexes. The three types of acceptors include π-acceptors (quinol and picric acid), σ-acceptors (iodine) and vacant orbital acceptors (tin(IV) tetrachloride and zinc chloride). The positron annihilation lifetime parameters were found to be dependent on the structure, electronic configuration, the power of acceptors and molecular weight of the CT complexes. The positron annihilation lifetime spectroscopy can be used as a probe for the formation of charge-transfer (CT) complexes.
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Affiliation(s)
- Moamen S Refat
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia; Department of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt.
| | - Abdel Majid A Adam
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia
| | - T Sharshar
- Department of Physics, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia; Department of Physics, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Hosam A Saad
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, 21974 Taif, Saudi Arabia; Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Hala H Eldaroti
- Department of Chemistry, Faculty of Education, Alzaeim Alazhari University, Khartoum, Sudan
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Azabou E, Roche N, Sharshar T, Bussel B, Lofaso F, Petitjean M. P 99. Effects of transcranial direct-current stimulation on diaphragm corticospinal pathway excitability. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.04.177] [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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Refat MS, Sharshar T, Elsabawy KM, Heiba ZK. Physicochemical impact studies of gamma rays on “aspirin” analgesics drug and its metal complexes in solid form: Synthesis, spectroscopic and biological assessment of Ca(II), Mg(II), Sr(II) and Ba(II) aspirinate complexes. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Adam AMA, Refat MS, Sharshar T, Heiba ZK. Synthesis and characterization of highly conductive charge-transfer complexes using positron annihilation spectroscopy. Spectrochim Acta A Mol Biomol Spectrosc 2012; 95:458-477. [PMID: 22595252 DOI: 10.1016/j.saa.2012.04.024] [Citation(s) in RCA: 31] [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] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 03/20/2012] [Accepted: 04/07/2012] [Indexed: 05/31/2023]
Abstract
Molecular charge-transfer complexes of the tetramethylethylenediamine (TMEDA) with picric acid (Pi-OH), benzene-1,4-diol (QL), tin(IV) tetrachloride (SnCl(4)), iodine, bromine, and zinc chloride (ZnCl(2)) have been synthesized and investigated by elemental and thermal analysis, electronic, infrared, Raman and proton-NMR, energy-dispersive X-ray spectroscopy, X-ray powder diffraction and positron annihilation lifetime spectroscopy, and scanning electron microscopy. In this work, three types of acceptors π-acceptors (Pi-OH and QL), σ-acceptors (iodine and bromine), and vacant orbital acceptors (SnCl(4) and ZnCl(2)) were covered. The results of elemental analysis indicated that the CT complexes were formed with ratios 1:1 and 1:2 for QL, SnCl(4), and ZnCl(2) acceptors and iodine, Pi-OH, and Br(2) acceptors, respectively. The type of chelating between the TMEDA donor and the mentioned acceptors depends upon the behavior of both items. The positron annihilation lifetime parameters were found to be dependent on the structure, electronic configuration, and the power of acceptors. The correlation between these parameters and the molecular weight and biological activities of studied complexes was also observed. Regarding the electrical properties, the AC conductivity and the dielectric coefficients were measured as a function of frequency at room temperature. The TMEDA charge-transfer complexes were screened against antibacterial (Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Pseudomonas aeruginosa) and antifungal (Aspergillus flavus and Candida albicans) activities.
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Affiliation(s)
- Abdel Majid A Adam
- Department of Chemistry, Faculty of Science, Taif University, Al-Hawiah, PO Box 888, Zip Code 21974 Taif, Saudi Arabia.
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Azabou E, Magalhaes E, Durand M, Heraut F, Lofaso F, Sharshar T. Intérêt d’une exploration neurophysiologique multimodale du tronc cérébral chez le patient de réanimation. Neurophysiol Clin 2012. [DOI: 10.1016/j.neucli.2012.04.012] [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: 10/28/2022] Open
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Refat MS, Sharshar T. Infrared, Raman, 1H NMR, thermal and positron annihilation lifetime studies of Pb(II), Sn(II), Sb(III), Bi(III)-barbital complexes. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.02.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ramadan KA, Seddeek MK, Elnimr T, Sharshar T, Badran HM. Spatial distribution of radioisotopes in the coast of Suez Gulf, southwestern Sinai and the impact of hot springs. Radiat Prot Dosimetry 2011; 145:411-420. [PMID: 21148168 DOI: 10.1093/rpd/ncq446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work describes the concentrations of radioisotopes in soil, sediment, wild plants and groundwater in southwestern Sinai. The study area extends from Suez to Abu Rudies along the eastern part of the Suez Gulf. It included two hot springs: Ayun Musa and Hammam Faraoun. No dependence of ¹³⁷Cs concentrations on any of the measured sand characteristics was found, including calcium carbonate. The enrichment of ²²⁶Ra in Hammam Faraoun hot spring was the most prominent feature. The ²²⁶Ra concentration in hot springs of Ayun Musa and Hammam Faraoun were 68 and 2377 Bq kg⁻¹ for sediments, 3.5 and 54.0 Bq kg⁻¹ for wild plants and 205 and 1945 mBq l⁻¹ for the groundwater, respectively. In addition, ²²⁶Ra activity concentration in local sand in the area of Hammam Faraoun was ∼14 times that of Ayun Musa. On the other hand, the ²³²Th concentrations were comparable in the two hot springs, while ¹³⁷Cs concentrations were relatively higher in Ayun Musa. The characteristics and radioelements studies support possible suggestions that the waters in the two hot springs have different contributions of sea and groundwaters crossing different geological layers where the water-rock interaction takes place.
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Affiliation(s)
- Kh A Ramadan
- Physics Department, Faculty of Science, Al-Azhar University, Gaza, Palestine
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Orlikowski D, Porcher R, Sivadon-Tardy V, Quincampoix JC, Raphael JC, Durand MC, Sharshar T, Roussi J, Caudie C, Annane D, Rozenberg F, Leruez-Ville M, Gaillard JL, Gault E. Guillain-Barre Syndrome following Primary Cytomegalovirus Infection: A Prospective Cohort Study. Clin Infect Dis 2011; 52:837-44. [DOI: 10.1093/cid/cir074] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Sonneville R, Den Hertog H, Güiza F, Derese I, Brouland JP, Gray F, Chrétien F, Sharshar T, Annane D, Van den Berghe G, Vanhorebeek I. Effects of hyperglycemia and intensive insulin therapy on neurons and glial cells during critical illness. Crit Care 2011. [PMCID: PMC3068319 DOI: 10.1186/cc9810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Sharshar T, Antona M. Confusion et agitation en réanimation — Mécanismes et diagnostic. Réanimation 2011. [DOI: 10.1007/s13546-010-0036-y] [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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Fletcher D, Martinez V, Martin F, Orlikowski D, Sharshar T, Chauvin M, Bouhassira D, Attal N. 556 THERMAL SENSORY TESTING PREDICTS NEUROPATHIC PAIN IN GUILLAIN BARRE SYNDROME. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60559-0] [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: 11/28/2022]
Affiliation(s)
- D. Fletcher
- Université Versailles Saint‐Quentin, APHP, Hôpital Raymond Poincaré, Service d'Anesthésie Reanimation Chirurgicale, Garches, France
- INSERM U 792, Hôpital Ambroise Paré, Centre d'Evaluation et de Traitement de la Douleur, Boulogne‐Billancourt, France
| | - V. Martinez
- Université Versailles Saint‐Quentin, APHP, Hôpital Raymond Poincaré, Service d'Anesthésie Reanimation Chirurgicale, Garches, France
- INSERM U 792, Hôpital Ambroise Paré, Centre d'Evaluation et de Traitement de la Douleur, Boulogne‐Billancourt, France
| | - F. Martin
- Université Versailles Saint‐Quentin, APHP, Hôpital Raymond Poincaré, Service d'Anesthésie Reanimation Chirurgicale, Garches, France
| | - D. Orlikowski
- Université Versailles Saint Quentin, APHP, Hôpital Raymond Poincaré, Reanimation Médico‐Chirurgicale, Garches, France
| | - T. Sharshar
- Université Versailles Saint Quentin, APHP, Hôpital Raymond Poincaré, Reanimation Médico‐Chirurgicale, Garches, France
| | - M. Chauvin
- Hôpital Ambroise Paré, APHP, Service d'Anesthésie Reanimation Chirurgicale, Boulogne, France
- INSERM U 792, Hôpital Ambroise Paré, Centre d'Evaluation et de Traitement de la Douleur, Boulogne‐Billancourt, France
| | - D. Bouhassira
- Université Versailles Saint‐Quentin, APHP, Hôpital Raymond Poincaré, Service d'Anesthésie Reanimation Chirurgicale, Garches, France
| | - N. Attal
- Université Versailles Saint Quentin, Versailles, France
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Seddeek MK, Sharshar T, Badran HM. Inter-comparison study of the population dose due to gamma-radiation in the coast of North Sinai between Rafah and Bir El-Abd areas. Radiat Prot Dosimetry 2009; 135:261-267. [PMID: 19561154 DOI: 10.1093/rpd/ncp113] [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: 05/28/2023]
Abstract
This study compares the external dose due to the gamma-ray emitting radionuclides in various areas in North Sinai, Egypt. The whole area was divided into 10 regions. The average absorbed dose rates were evaluated for each region. It was found that Zaranik-protected area and Al-Massaid have the highest values of 72.7 and 57.2 nGy h(-1), respectively. The corresponding values of the remaining regions were <23 nGy h(-1). The mean annual effective dose equivalents for the four largest cities Rafah, El-Sheikh Zuwaied, Al-Arish and Bir El-Abd were 20.8, 18.8, 57.4 and 14.0 microSv, respectively. The results are compared with those from different areas in Egypt and in various countries.
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Affiliation(s)
- M K Seddeek
- Faculty of Education, Department of Physics, Suez Canal University, Al-Arish, Egypt
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Orlikowski D, Terzi N, Blumen M, Sharshar T, Raphael JC, Annane D, Lofaso F. Tongue weakness is associated with respiratory failure in patients with severe Guillain-Barré syndrome. Acta Neurol Scand 2009; 119:364-70. [PMID: 18976323 DOI: 10.1111/j.1600-0404.2008.01107.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Swallowing impairment may worsen respiratory weakness and conduct to respiratory complications such as aspiration pneumonia in Guillain-Barré syndrome (GBS). We prospectively evaluate how tongue weakness could be associated to bulbar dysfunction and respiratory weakness in severe GBS patients. MEASUREMENTS AND MAIN RESULTS Tongue strength, dysphagia and respiratory parameters were measured in 16 GBS patients at intensive care unit (ICU) admission and discharge and in seven controls. Tongue strength was decreased in the GBS patients compared with the controls. At admission, patients with dysphagia and those requiring mechanical ventilation (MV) had greater tongue weakness. All the patients with initial tongue strength <150 g required MV during ICU stay. Tongue strength correlated significantly with respiratory parameters. CONCLUSION This study confirms the strong association between bulbar and respiratory dysfunction in GBS admitted to ICU. Tongue weakness may be present in GBS, especially during the phase of increasing paralysis, and resolves during the recovery phase. Tongue strength and indices of global and respiratory strength vary in parallel throughout the course of GBS. Further studies are needed to assess if, when used in combination with other respiratory tests, tongue strength measurement could contribute to identify patients at high risk for respiratory complications.
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Affiliation(s)
- D Orlikowski
- Services de Réanimation Médicale, Physiologie-Explorations Fonctionnelles, Centre d'Innovations Technologiques, Hôpital Raymond Poincaré, AP-HP, Université de Versailles Saint Quentin en Yvelines, Garches, France.
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Polito A, Siami S, Sharshar T. Encephalopathy in Sepsis. Intensive Care Med 2009. [DOI: 10.1007/978-0-387-77383-4_74] [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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Siami S, Polito A, Sharshar T. Sepsis-associated Encephalopathy. Intensive Care Med 2009. [DOI: 10.1007/978-0-387-92278-2_74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Along with corticosteroids, immunosuppressant drugs are mainstays of disease-modifying therapy for myasthenia gravis (MG). However, their efficacies and optimum use are unclear. We identified seven randomised controlled trials (RCT) of immunosuppressants in generalised MG that qualified for Cochrane Review: (1) azathioprine plus initial prednisolone versus prednisolone; (2) azathioprine plus prednisolone versus prednisolone plus placebo; (3) ciclosporin versus placebo (4) ciclosporin plus prednisolone versus prednisolone plus placebo; (5) cyclophosphamide plus prednisolone versus prednisolone plus placebo; (6) mycophenolate mofetil (MMF) alone or plus either ciclosporin or prednisolone versus placebo alone or plus either ciclosporin or prednisolone; (7) tacrolimus plus corticosteroids with or without plasma exchange versus corticosteroids with or without plasma exchange. All trials were small (14 to 41 participants) and their designs heterogeneous. The RCT evidence, albeit limited, was that ciclosporin (alone or with corticosteroids) or cyclophosphamide (with corticosteroids) improved MG significantly within 1 year compared with placebo. There was no clear evidence of benefit for azathioprine, MMF, or tacrolimus within 1 year. Larger, better-designed, longer trials are needed.
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Affiliation(s)
- I K Hart
- The Walton Centre for Neurology and Neurosurgery, Lower Lane, Liverpool L9 7LJ, UK.
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Abstract
ICU-acquired neuromyopathy (NMAR) and delirium are the two most frequent and severe neurological complications of intensive care medicine. Their mechanisms still remain to be elucidated. The objective of this review is to address the potential role of sedation in occurrence of these complications. There is no evidence that sedation is involved in NMARs. However, the hypothesis that muscle inactivity induced by sedation fosters NMAR is an argument to discontinue or reduce sedatives infusion whenever possible. It is also recommended not to administer propofol more than 48 h at an infusion rate above 5 mg/kg per hour in patients with systemic inflammatory response syndrome, because of the risk of propofol infusion syndrome, which includes notably rhabdomyolysis. The relationship between delirium and sedation are controversial because in most studies, patients were considered delirious though being still sedated and multivariate analysis was lacking. One study showed that lorazepam given continuously was an independent risk factor for daily transition to delirium 24 h later with a 20% increase risk of every unit dose (expressed as log(e)mg). The impact of deepness, daily interruption or titration of sedation on the prevalence of delirium has never been assessed but it seems that deep sedation has to be avoided.
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Affiliation(s)
- T Sharshar
- Service de réanimation, hôpital Raymond-Poincaré, 104, boulevard Raymond-Poincaré, 92380 Garches, France.
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Abstract
BACKGROUND The benefits of different immunosuppressants for myasthenia gravis (MG) are unclear. OBJECTIVES Assessment of immunosuppressant drug efficacy in MG. SEARCH STRATEGY We searched the Cochrane Neuromuscular Disease Group Trials Register, MEDLINE (from January 1966 to July 2007), EMBASE (from January 1980 to July 2007), review and trial bibliographies and contacted trial authors. SELECTION CRITERIA Types of studies: Randomised and quasi-randomised controlled trials. TYPES OF PARTICIPANTS Any age, any type or severity of MG regardless of concomitant treatment. Types of interventions: Any immunosuppressive agent. Types of outcome measures: Primary: (1) Improvement or not at six months. Secondary: (1) Improvement or not at one year (2) Need for other treatment, for example corticosteroid dose, at six months (3) Number of exacerbations during the first year (4) Acetylcholine receptor antibody titre after at least six months (5) Occurrence of one or more adverse events at any time after the introduction of treatment. DATA COLLECTION AND ANALYSIS One author extracted and two checked the data. MAIN RESULTS Seven trials are included but few reported the outcomes selected for this review. A meta-analysis of ciclosporin versus placebo from two trials (59 participants) - one as monotherapy (20 participants) and the other with corticosteroids (39 participants) - showed that it resulted in improvement of participants in the ciclosporin group compared with those in the placebo group, with a relative rate of improvement of 2.44 (95% confidence interval (CI) 1.13 to 5.27). In addition the weighted mean difference in QMG score between the ciclosporin and placebo groups was -0.34 (95% CI -0.52 to -0.17). Azathioprine (plus prednisolone for first month) had no significant benefit over prednisolone alone (41 participants). The effects of azathioprine plus prednisolone versus prednisolone plus placebo were similar (34 participants). Cyclophosphamide was reported to be statistically more efficacious than placebo at 12 months in corticosteroid-dependent participants (23 participants), but no raw data were available. Trials of mycophenolate mofetil and tacrolimus did not provide relevant endpoint data for this review. All trials had low numbers of participants. Adverse event reporting was variable. Trial protocol heterogeneity prevented comparison of the different immunosuppressants. AUTHORS' CONCLUSIONS In generalised MG, limited evidence from small RCTs suggests that ciclosporin, as monotherapy or with corticosteroids, or cyclophosphamide with corticosteroids, significantly improve MG.Limited evidence from RCTs shows no significant benefit from azathioprine (as monotherapy or with steroids), mycophenolate mofetil (as monotherapy or with either corticosteroids or ciclosporin) or tacrolimus (with corticosteroids or plasma exchange). Bigger, better-designed, longer trials are needed.
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Affiliation(s)
- I K Hart
- Walton Centre for Neurology and Neurosurgery, University Division of Neuroscience, Lower Lane, Liverpool, UK, L9 7LJ.
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Orlikowski D, Prigent H, Gonzalez J, Sharshar T, Raphael JC. [Long term domiciliary mechanical ventilation in patients with neuromuscular disease (indications, establishment and follow up)]. Rev Mal Respir 2006; 22:1021-30. [PMID: 16598862 DOI: 10.1016/s0761-8425(05)85732-8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
UNLABELLED Neuromuscular diseases represent a heterogeneous group of pathologies which common feature is the development of a restrictive ventilatory failure. BACKGROUND Respiratory insufficiency of neuromuscular origin manifests itself by functional symptoms that must be carefully searched for in the history, such as headaches, sleep disorders, or dyspnoea of effort, sometimes very mild, or in severe cases associated with orthopnoea. Follow up should be multi-disciplinary. On the respiratory level regular measurement of blood gases, vital capacity, maximum inspiratory and expiratory pressures as well as sleep studies, will detect the criteria for mechanical ventilation (hypercarbia > 45 mm Hg, nocturnal desaturation < 88%, vital capacity < 60%, PImax < 60 cm H2O). STATE OF THE ART The establishment of mechanical ventilation is a major decision for patients with neuromuscular disease because of the important physical, psychological, social and sometimes financial consequences. The patients and their family must be instructed precisely in order to obtain the best possible observation and compliance. The establishment requires a stay in hospital of several days to optimise the choice of ventilator, its settings, and connections. The link with the organisation managing the domiciliary ventilation is fundamental in ensuring follow up after discharge from hospital. Techniques of cough assistance must be taught to each neuromuscular patient requiring mechanical ventilation. CONCLUSION Ventilation of neuromuscular patients requires careful evaluation of the indications and rigorous follow up by a multidisciplinary team with wide experience of this type of disease.
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Affiliation(s)
- D Orlikowski
- Service de réanimation médicale et pôle de ventilation 6 domicile, Hôpital Raymond Poincaré, Garches
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Mahmoud K, Al-Sigeny S, Sharshar T, El-Hamshary H. Positron annihilation study on free volume of amino acid modified, starch-grafted acrylamide copolymer. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.12.037] [Citation(s) in RCA: 11] [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: 10/25/2022]
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El-Reefy HI, Sharshar T, Zaghloul R, Badran HM. Distribution of gamma-ray emitting radionuclides in the environment of Burullus Lake: I. Soils and vegetations. J Environ Radioact 2006; 87:148-69. [PMID: 16427723 DOI: 10.1016/j.jenvrad.2005.11.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2005] [Revised: 09/26/2005] [Accepted: 11/18/2005] [Indexed: 05/06/2023]
Abstract
The concentrations and distribution of gamma-ray emitting isotopes in Burullus Lake were investigated with the aim of evaluating the environmental radioactivity. Particularly in wetlands, natural properties of the environment can cause the actual inventory to be different from the activity originally deposited. The mean concentrations of (226)Ra, (232)Th and (40)K were 14.3, 15.5 and 224 Bq/kg, respectively, in the coastal soils. On the other hand, soil samples from the islands had mean concentrations of 13.5, 17.4 and 341 Bq/kg for (226)Ra, (232)Th and (40)K, respectively. Samples from coast and islands show evidence of possible transfer and accumulation of the (137)Cs radionuclide. The mean (137)Cs activity concentrations in the soil samples were 1.2 and 15.1 Bq/kg in the coast and islands, respectively. The vertical migration of (137)Cs was studied based on its content in the consequently located three soil layers down to 30 cm depth. The radium equivalent, dose rate in air and annual dose equivalent from the terrestrial natural gamma-radiation were evaluated. The mean activity concentrations of the gamma-ray emitting radionuclides in vegetation were relatively low.
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Affiliation(s)
- H I El-Reefy
- Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
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Abstract
Critical illness neuromuscular abnormalities (CINMA) are found in 25 percent of ITU patients who recover consciousness and are characterized by a bilateral and symmetric weakness that involves the four limbs but spares the facial muscles. Electrophysiological testing shows an axonal sensory motor polyneuropathy and/or myopathy. The main risk factors of CINMA are prolonged durations of multiple organ failure and mechanical ventilation, use of corticosteroids and hyperglycaemia. CINMA contribute also to increase the duration of mechanical ventilation, this effect being mediated by diaphragm weakness. The median duration of limb weakness is 21 days, although it can exceed several months in some patients. Few preventive measures have been assessed. Whether the benefit of strict blood glucose control in ITU patients recovering from heart surgery on CINMA incidence can be extended to medical ICU patients needs to be determined.
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Affiliation(s)
- F Louillet
- Service de Réanimation médicale, Hôpital Raymond Poincaré, Garches
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Durand MC, Prigent H, Sivadon-Tardy V, Orlikowski D, Caudie C, Devaux C, Clair B, Gaillard JL, Lofaso F, Raphael JC, Sharshar T. Significance of phrenic nerve electrophysiological abnormalities in Guillain-Barre syndrome. Neurology 2005; 65:1646-9. [PMID: 16301497 DOI: 10.1212/01.wnl.0000184589.62101.b9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The authors investigated whether the amplitude and latency of diaphragm compound muscle action potential helped predict respiratory failure in Guillain-Barré syndrome. Both variables were significantly but weakly correlated with vital capacity (VC) and were similar in unventilated (n = 60) and ventilated (n = 10) patients. In ventilated patients, motor loss severity, progression, and VC reduction were significantly greater, and bulbar dysfunction was more common. Predicting respiratory failure must rely on clinical features and VC.
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Affiliation(s)
- M C Durand
- Functional Testing Department, Raymond Poincaré Teaching Hospital, Garches, France
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Sivadon V, Orlikowski D, Rozenberg F, Quincampoix JC, Caudie C, Durand MC, Fauchère JL, Sharshar T, Raphaël JC, Gaillard JL. [Prevalence and characteristics of Guillain-Barré syndromes associated with Campylobacter jejuni and cytomegalovirus in greater Paris]. ACTA ACUST UNITED AC 2005; 53:536-8. [PMID: 16084033 DOI: 10.1016/j.patbio.2005.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Accepted: 06/24/2005] [Indexed: 11/23/2022]
Abstract
AIM OF THE STUDY We aimed to study prevalence and features of Campylobacter jejuni and cytomegalovirus (CMV)-associated Guillain-Barré syndromes (GBS) in a French care unit. PATIENTS AND METHODS We studied 264 patients with GBS admitted at Raymond Poincaré hospital (Garches) between 1996 and 2001. Clinical data were obtained prospectively. Sera were collected at patients entry and tested retrospectively for anti-C. jejuni, anti-CMV and antigangliosides GM1 et GM2 antibodies. RESULTS GBS associated with a serological evidence for a recent C. jejuni infection were the more frequent (58/264, 22%); they affected predominantly men of mature years (mean age: 51.3 years; sex-ratio M/F: 1.76), mostly after a gastrointestinal illness (52%); they were often pure motor forms (57%), were severe (mechanical ventilation: 40%) and associated to an anti-GM1 IgG and/or IgM response (44%). GBS cases involving a primary CMV infection were less frequent (40/264, 15%), but were severe too (mechanical ventilation: 37.5%); they occurred preferentially in young women (mean age: 35.9 years; sex-ratio MF: 0.82), often after respiratory tract symptoms (28%) or an influenza-like syndrome (15%) and were frequently associated with sensory loss (73%) and with an anti-GM2 IgM response (47%). CONCLUSION C. jejuni and CMV proved to be major triggering agents of GBS in France. They are associated with distinct presentations, which are both severe.
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Affiliation(s)
- V Sivadon
- Laboratoire de microbiologie, hôpital Raymond-Poincaré, AP-HP, 104 boulevard Raymond-Poincaré, 92380 Garches, France.
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