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Klykken C, Khan E, Karlsen C, Reed AK, Attramadal KJK, Olsen RE, Boissonnot L. Nephrocalcinosis in juvenile farmed Atlantic Salmon (Salmo salar) may be linked to osmoregulatory stress. J Fish Dis 2023; 46:943-956. [PMID: 37269206 DOI: 10.1111/jfd.13815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/12/2023] [Accepted: 05/17/2023] [Indexed: 06/04/2023]
Abstract
Nephrocalcinosis is a widespread challenge in intensive production of salmon smolt. There is however no consensus on its aetiology, which makes it problematic to implement proper measures to limit its development. We performed a survey of nephrocalcinosis prevalence and environmental factors in 11 different hatcheries in Mid-Norway as well as a 6-month monitoring in one of the hatcheries. A multivariate analysis indicated that the most influencing factor for the prevalence of nephrocalcinosis was the supplementation of sea water during smolt production. In the 6-month monitoring, the hatchery introduced salinity in the production water prior to the change in day length. Mismatch in those environmental signals may increase the risk for developing nephrocalcinosis. Salinity fluctuations prior to smoltification can cause osmotic stress and result in unbalanced levels of ions in fish blood. This was clearly illustrated in our study, as the fish experienced chronic hypercalcaemia and hypermagnesaemia. Both magnesium and calcium are excreted over the kidneys and it is possible that their prolonged, elevated levels in plasma resulted in an oversaturation of the urine when finally excreted. This again could have led to the aggregation of calcium deposits within the kidney. This study indicates a relationship between osmotic stress induced by salinity changes in juvenile Atlantic salmon and the development of nephrocalcinosis. Other factors that may affect the severity of nephrocalcinosis are currently subjects for discussion.
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Affiliation(s)
- C Klykken
- Aqua Kompetanse AS, Flatanger, Norway
- Department of Biology, Faculty of Science and Technology, Norwegian University of Science and Technology, Trondheim, Norway
| | - E Khan
- Department of Biotechnology and Food Science, Faculty of Science and Technology, Norwegian University of Science and Technology, Trondheim, Norway
| | - C Karlsen
- Aqua Kompetanse AS, Flatanger, Norway
| | - A K Reed
- Pharmaq Analytiq AS, Bergen, Norway
| | - K J K Attramadal
- Department of Biotechnology and Food Science, Faculty of Science and Technology, Norwegian University of Science and Technology, Trondheim, Norway
| | - R E Olsen
- Department of Biology, Faculty of Science and Technology, Norwegian University of Science and Technology, Trondheim, Norway
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Kumar M, Lal S, Khan E. Managing Post Operative Nausea and Vomiting and Perineal Itching A Slow and Steady Solution. Ir Med J 2023; 116:822. [PMID: 37606540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
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Hoppe K, Khan E, Meybohm P, Riese T. Mechanical power of ventilation and driving pressure: two undervalued parameters for pre extracorporeal membrane oxygenation ventilation and during daily management? Crit Care 2023; 27:111. [PMID: 36915183 PMCID: PMC10010963 DOI: 10.1186/s13054-023-04375-z] [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: 12/12/2022] [Accepted: 02/19/2023] [Indexed: 03/15/2023] Open
Abstract
The current ARDS guidelines highly recommend lung protective ventilation which include plateau pressure (Pplat < 30 cm H2O), positive end expiratory pressure (PEEP > 5 cm H2O) and tidal volume (Vt of 6 ml/kg) of predicted body weight. In contrast, the ELSO guidelines suggest the evaluation of an indication of veno-venous extracorporeal membrane oxygenation (ECMO) due to hypoxemic or hypercapnic respiratory failure or as bridge to lung transplantation. Finally, these recommendations remain a wide range of scope of interpretation. However, particularly patients with moderate-severe to severe ARDS might benefit from strict adherence to lung protective ventilation strategies. Subsequently, we discuss whether extended physiological ventilation parameter analysis might be relevant for indication of ECMO support and can be implemented during the daily routine evaluation of ARDS patients. Particularly, this viewpoint focus on driving pressure and mechanical power.
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Affiliation(s)
- K Hoppe
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany.
| | - E Khan
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - P Meybohm
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - T Riese
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
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Shi B, Klopot A, Mahi T, Buiter S, Khan E, Budunova I, White BEP. 425 Acute inflammatory cytokines differentially effect epidermal barrier expression and function. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.434] [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: 10/17/2022]
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5
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Zettl I, Ivanova T, Strobl MR, Weichwald C, Goryainova O, Khan E, Rutovskaya MV, Focke‐Tejkl M, Drescher A, Bohle B, Flicker S, Tillib SV. Isolation of nanobodies with potential to reduce patients' IgE binding to Bet v 1. Allergy 2022; 77:1751-1760. [PMID: 34837242 DOI: 10.1111/all.15191] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 08/06/2021] [Revised: 11/03/2021] [Accepted: 11/18/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Recent studies showed that a single injection of human monoclonal allergen-specific IgG antibodies significantly reduced allergic symptoms in birch pollen-allergic patients. Since the production of full monoclonal antibodies in sufficient amounts is laborious and expensive, we sought to investigate if smaller recombinant allergen-specific antibody fragments, that is, nanobodies, have similar protective potential. For this purpose, nanobodies specific for Bet v 1, the major birch pollen allergen, were generated to evaluate their efficacy to inhibit IgE-mediated responses. METHODS A cDNA-VHH library was constructed from a camel immunized with Bet v 1 and screened for Bet v 1 binders encoding sequences by phage display. Selected nanobodies were expressed, purified, and analyzed in regards of epitope-specificity and affinity to Bet v 1. Furthermore, cross-reactivity to Bet v 1-homologues from alder, hazel and apple, and their usefulness to inhibit IgE binding and allergen-induced basophil activation were investigated. RESULTS We isolated three nanobodies that recognize Bet v 1 with high affinity and cross-react with Aln g 1 (alder) and Cor a 1 (hazel). Their epitopes were mapped to the alpha-helix at the C-terminus of Bet v 1. All nanobodies inhibited allergic patients' polyclonal IgE binding to Bet v 1, Aln g 1, and Cor a 1 and partially suppressed Bet v 1-induced basophil activation. CONCLUSION We identified high-affinity Bet v 1-specific nanobodies that recognize an important IgE epitope and reduce allergen-induced basophil activation revealing the first proof that allergen-specific nanobodies are useful tools for future treatment of pollen allergy.
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Affiliation(s)
- Ines Zettl
- Division of Immunopathology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Tatiana Ivanova
- Institute of Gene Biology Russian Academy of Sciences Moscow Russia
| | - Maria R. Strobl
- Division of Experimental Allergology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Christina Weichwald
- Division of Immunopathology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | | | - Evgenia Khan
- Institute of Gene Biology Russian Academy of Sciences Moscow Russia
| | - Marina V. Rutovskaya
- Institute of Gene Biology Russian Academy of Sciences Moscow Russia
- A.N.Severtsov Institute of Ecology and Evolution Russian Academy of Sciences Moscow Russia
| | - Margarete Focke‐Tejkl
- Division of Immunopathology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | | | - Barbara Bohle
- Division of Experimental Allergology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Sabine Flicker
- Division of Immunopathology Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Sergei V. Tillib
- Institute of Gene Biology Russian Academy of Sciences Moscow Russia
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Pollack B, Popiel P, Drugge E, Bibi M, Pollack S, Friedman R, Alishahian L, Bielawski A, Sacks A, Lebron K, Phillips D, Rubino S, Toaff M, Khan R, Khan E, Marioutina M, Gorgy M, Grimes C. Impact of permanent versus absorbable suture in vaginal suspension surgery for apical pelvic organ prolapse. Am J Obstet Gynecol 2022. [DOI: 10.1016/j.ajog.2021.12.135] [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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Rahman HU, Khatoon N, Arshad S, Masood Z, Ahmad B, Khan W, Rafiq N, Khan MI, Kabir M, Haq ZU, Kamal I, Khan E, Rashid M, Haq AU, Garedaghi Y. Prevalence of intestinal nematodes infection in school children of urban areas of district Lower Dir, Pakistan. BRAZ J BIOL 2022; 82:e244158. [DOI: 10.1590/1519-6984.244158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/21/2021] [Indexed: 12/23/2022] Open
Abstract
Abstract Intestinal parasitism is the main cause of disease all over the world and described as a significant community health problem. The current study intended to find out the occurrence and identification of hazard factors linked with IPIs among 4-12 years aged shool-age children residing in Lower Dir district, Pakistan during 2019 - 2020. A cross-sectional school-based study was conducted using a pre-arranged pre-tested survey. Anthropometric data and stool collection were done to obtain the findings. The direct wet mount preparation in saline/iodine/methods was used for stool examination. Data were investigated using the GraphPad Prism 5. A total of 400 children studied (mean age of 8.6±3.6 years) the total incidence rate for the intestinal parasitic disease was established to be 71.75%. Of the 400 children studied, the overall prevalence rate for intestinal parasitic infections was found to 71.75% Ascaris lumbricoides (33.1%), Trichuris trichiura (1.04%), E. vermicularis (1.39%), Hookworm (19.86%) were identified in children living in the study area. We concluded that there is a mass scale campaigns were required to generate alertness about health and sanitation in children and the need for the development of effective poverty control programs because deworming (killing of worm with drugs) alone is not adequate to control parasitic infections.
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Affiliation(s)
| | | | | | - Z. Masood
- Sardar Bahadur Khan women University, Pakistan
| | - B. Ahmad
- University of Malakand, Pakistan
| | - W. Khan
- University of Malakand, Pakistan
| | - N. Rafiq
- Abdul Wali Khan University Mardan, Pakistan
| | - M. I. Khan
- Abdul Wali Khan University Mardan, Pakistan
| | - M. Kabir
- University of Sargodha, Pakistan
| | - Z. Ul Haq
- Hazara University Mansehra, Pakistan
| | - I. Kamal
- Hazara University Mansehra, Pakistan
| | - E. Khan
- Government Degree College, Pakistan
| | | | - A. ul Haq
- Shaheed Benazir Bhutto University, Pakistan
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Khan E, Lambrakis K, Liao Z, Gerlach J, Verjans J, Dykes L, Chew D. Developing a Machine Learning (ML) Model for Digital Phenotyping of Myocardial Infarction (MI) and Injury Amongst Patients Presenting With Suspected Acute Coronary Syndrome (ACS). Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.526] [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: 10/16/2022]
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Khan E, Lambrakis K, Briffa T, Cullen L, Karnon J, Papendick C, Quinn S, Tideman P, Van Den Hengel A, Verjans J, Chew D. Re-Engineering the Clinical Approach to Suspected Cardiac Chest Pain Assessment in the Emergency Department by Expediting Research Evidence to Practice Using Artificial Intelligence (RAPIDx AI) – A Cluster Randomised Clinical Trial Design. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.373] [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: 10/16/2022]
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Rocheleau S, Eng-Frost J, Khan E, Lambrakis K, Steele S, Lorensini S, Chiang B, Wattchow N, Lehman S, Chew D. Twelve-Month Outcomes of Patients With Myocardial Injury Not Due to Type 1 Myocardial Infarction. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.398] [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: 10/16/2022]
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Mercier F, Zhao J, Ebran JP, Khan E, Nikšić T, Vretenar D. Microscopic Description of 2α Decay in ^{212}Po and ^{224}Ra Isotopes. Phys Rev Lett 2021; 127:012501. [PMID: 34270302 DOI: 10.1103/physrevlett.127.012501] [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] [Received: 04/02/2021] [Revised: 05/11/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
A microscopic calculation of half-lives for both the α and 2α decays of ^{212}Po and ^{224}Ra is performed, using a self-consistent framework based on energy density functionals. A relativistic density functional and a separable pairing interaction of finite range are used to compute axially symmetric deformation energy surfaces as functions of quadrupole, octupole, and hexadecapole collective coordinates. Dynamical least-action paths are determined, that trace the α and 2α emission from the equilibrium deformation to the point of scission. The calculated half-lives for the α decay of ^{212}Po and ^{224}Ra are in good agreement with data. A new decay mode, the symmetric 2α emission, is predicted with half-lives of the order of those observed for cluster emission.
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Affiliation(s)
- F Mercier
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405 Orsay Cedex, France
| | - J Zhao
- Center for Circuits and Systems, Peng Cheng Laboratory, Shenzhen 518055, China
| | - J-P Ebran
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - E Khan
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405 Orsay Cedex, France
| | - T Nikšić
- Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - D Vretenar
- Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
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Imtiaz K, Azizullah Z, Farooqi J, Prakoso D, Mehmood F, Jamil B, Barr K, Long M, Khan E. Is dengue the only arbovirus circulating in Pakistan? Report from southern region of the country. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Koentges C, Khan E, Birkle S, Hoelscher M, Pfeil K, Gollmer J, Hoffmann M, Bode C, Zirlik A, Bugger H. Sirtuin 4 contributes to heart failure development by increasing mitochondrial oxidative stress. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Sirtuin 4 (SIRT4) is a mitochondrial NAD+-dependent deacylase which inhibits the oxidation of glucose and fatty acids, and has been implicated in the regulation of oxidative stress. Given the importance of cardiac energy depletion and ROS during heart failure development, we aimed to define the role of SIRT4 in the development of heart failure. Mice with deletion (SIRT4−/−) or overexpression (SIRT4 TG) of SIRT4 were subjected to transverse aortic constriction (TAC) for 12 weeks or underwent sham procedures. Using echocardiography, ejection fraction (EF) was not different between SIRT4 TG and WT mice subjected to sham operations. In contrast, TAC induced a more pronounced decrease in EF (35% vs. 51%; p<0.05), and a more pronounced increase in LV endsystolic diameter (4.5mm vs. 3.6mm; p<0.05) and myocardial fibrosis (2.2-fold; p<0.05) in SIRT4 TG mice compared to WT mice. Myocardial levels of the lipid peroxidation product 4-hydroxynonenal were increased in WT mice following TAC and were synergistically increased in SIRT4 TG mice following TAC (+66% vs. WT TAC; p<0.05). Administration of the mitochondria-targeted antioxidant MitoQ normalized 4-hydroxynonenal levels, markedly attenuated the decline in EF and almost normalized endsystolic LV diameter in SIRT4 TG mice following TAC. Cardiac function and morphology were unaffected in SIRT4−/− mice during normal or increased workload conditions. Thus, while SIRT4 is not required to maintain cardiac function even in response to increased energy demands, increased expression of SIRT4 accelerates the development of heart failure following TAC, at least in part due to increased mitochondrial oxidative stress.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): German Research Foundation
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Affiliation(s)
- C Koentges
- Heart Center Freiburg University, Cardiology and Angiology I, Freiburg, Germany
| | - E Khan
- Heart Center Freiburg University, Cardiology and Angiology I, Freiburg, Germany
| | - S Birkle
- Heart Center Freiburg University, Cardiology and Angiology I, Freiburg, Germany
| | - M Hoelscher
- Heart Center Freiburg University, Cardiology and Angiology I, Freiburg, Germany
| | - K Pfeil
- Medical University of Graz, Department of Cardiology, Graz, Austria
| | - J Gollmer
- Medical University of Graz, Department of Cardiology, Graz, Austria
| | - M.M Hoffmann
- University Hospital of Freiburg, Institute for Clinical Chemistry and Laboratory Medicine, Freiburg, Germany
| | - C Bode
- Heart Center Freiburg University, Cardiology and Angiology I, Freiburg, Germany
| | - A Zirlik
- Medical University of Graz, Department of Cardiology, Graz, Austria
| | - H Bugger
- Medical University of Graz, Department of Cardiology, Graz, Austria
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Shar ZH, Shar HH, Jatoi A, Sherazi STH, Mahesar SA, Khan E, Phanwar QK. Natural co-occurrence of Fusarium toxins in poultry feed and its ingredients. J Verbrauch Lebensm 2020. [DOI: 10.1007/s00003-020-01292-z] [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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Alam B, Nayab T, Bugshan AS, Gad MM, Khan E, Ali S. Scientific trends on research on denture stomatitis based on Scopus database: A bibliometric analysis. J Clin Exp Dent 2020; 15:e217-e224. [PMID: 37008244 PMCID: PMC10062459 DOI: 10.4317/jced.60249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/27/2023] [Indexed: 02/20/2023] Open
Abstract
Background Denture stomatitis is a clinical condition that affects people who wear removable maxillary dentures. It causes redness, soreness, and erythema and ultimately affects the general condition of the patient. The objective of this study was to analyze the leading countries, journals, organizations, and authors and the frequently used keywords associated with denture stomatitis. Material and Methods A bibliometric analysis of publications indexed in the Scopus database was conducted, and the article titles, abstracts, and keywords were analyzed using the VOSviewer software. Denture stomatitis-related publications from 1960 to 2021 were collected. This study included only research papers published in English with "article" as the paper type and dentistry as the subject area. Results Data from a total of 461 articles and 10 different journals were obtained. The papers were published in 64 different countries. Brazil and the United States of America were the top contributing countries, and the University of Sydney was the leading organization. Papers published in the Journal of Oral Rehabilitation received the highest number of citations, while author Gordon Ramage from the University of Glasgow received the highest number of citations. Conclusions The bibliometric analysis revealed that the number of denture stomatitis-related publications indexed in the Scopus database is increasing globally. Since 2007, there has been an increase in research interest regarding denture stomatitis, with more publications from several countries expected to be published in different journals. Key words:Bibliometric analysis, denture, candida, VOSviewer, maxilla.
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Swan A, Wai TS, Mugwagwa G, Khan E, Lau G, Joseph M. Global Longitudinal Strain in Exercise Stress Echo; are there Different Responses Based on Cardiac Risk? Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khan E, Chuang A, Halabi A, Tiver K, Horsfall M, Briffa T, Sun B, Cullen L, French J, Chew D. P2713Impact of routine implementation of high sensitivity troponin in a state-wide health service. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2713] [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: 11/12/2022] Open
Affiliation(s)
- E Khan
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
| | - A Chuang
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
| | - A Halabi
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
| | - K Tiver
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
| | - M Horsfall
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
| | - T Briffa
- The University of Western Australia, Perth, Australia
| | - B Sun
- Oregon Health & Science University, Portland, United States of America
| | - L Cullen
- University of Queensland, Brisbane, Australia
| | - J French
- Liverpool Hospital, Sydney, Australia
| | - D Chew
- Flinders Medical Centre and Flinders University, Cardiology, Adelaide, Australia
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Bars HPL, Guerlin C, Lasseri RD, Ebran JP, Bailey QG, Bize S, Khan E, Wolf P. Lorentz-symmetry test at Planck-scale suppression with a spin-polarized 133 Cs cold atom clock. IEEE Trans Ultrason Ferroelectr Freq Control 2018; 65:945-949. [PMID: 29994363 DOI: 10.1109/tuffc.2018.2805354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present the results of a Local Lorentz Invariance (LLI) test performed with the 133Cs cold atom clock FO2 [1], hosted at SYRTE. Such test, relating the frequency shift between 133Cs hyperfine Zeeman substates to the Lorentz violating coefficients of the Standard Model Extension (SME), has already been realized in [2] and led to state-of-the-art constraints on several SME proton coefficients. In this second analysis we used an improved model, based on a second order Lorentz transformation and a SCRMF nuclear model, which enables us to extend the scope of the analysis from purely proton to both proton and neutron coefficients. We have also become sensitive to the isotropic coefficient ~cTT, another SME coefficient that was not constrained in [2]. The resulting limits on SME coefficients improve by up to 13 orders of magnitude the present maximal sensitivities for laboratory tests and reach the generally expected suppression scales at which signatures of Lorentz violation could appear [3].
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Tara S, Swan A, Lau G, Gunton J, Khan E, Joseph M. Automated Function Imaging in Exercise Stress Echocardiography of Low-Risk Patients. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.399] [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]
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21
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Harwood T, Khan E, Niang P, Mustafa A, Kangaharan N, Ilton M. An Article on Investigative Pitfalls in Pulmonary Hypertension. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.044] [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]
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22
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Shakoor S, Khan E, Mir F, Malik FR, Jamil B. Secular trends of Streptococcus pyogenes sepsis in Pakistan and analysis of clinical features in a hospitalized cohort. Trop Biomed 2017; 34:648-656. [PMID: 33592933] [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: 06/12/2023]
Abstract
Streptococcus pyogenes or Group A Streptococcus (GAS) is a re-emerging pathogen of significant public health importance. We present trends in GAS blood cultures over a 10 year period in Pakistan and characteristics of hospitalized patients with GAS sepsis over three years at a tertiary care hospital in Karachi, Pakistan. Blood cultures positive for GAS from 2004 -2014 were recorded at the clinical microbiology laboratory of the Aga Khan University and studied for trends in positivity rates. Medical records of patients hospitalized at the Aga Khan University hospital from 2012-2014 were also examined for clinical features and outcomes. GAS trends show a steady rate of blood culture positivity over 11 years, with higher rates in those >50 years, and seasonality favouring winter months. Case fatality rate in the hospitalized cohort was 34.1% (n= 14; of 41 patients). Malignancy predominated as the underlying predisposing factor among the 15-49 age group. Presence of sepsis was an independent predictor of mortality in GAS bacteremia. Studies of GAS trends in developing regions are important to inform changing epidemiology. GAS septic shock continues to have high case fatality despite antibiotic treatment. Early recognition, aggressive, goal-directed therapy for sepsis and prevention are possible control measures to prevent high mortality.
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Affiliation(s)
- S Shakoor
- Department of Pathology and Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - E Khan
- Department of Pathology and Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - F Mir
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - F R Malik
- Department of Pathology and Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - B Jamil
- Department of Medicine, Aga Khan University, Karachi, Pakistan
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Abstract
Successful remediation of oil-contaminated agricultural land may include the goal of returning the land to prespill levels of agricultural productivity. This productivity may be measured by crop yield, quality, and safety, all of which are influenced by soil characteristics. This research was conducted to determine if these metrics are affected in hard red spring wheat ( L. cultivar Barlow) when grown in soils treated by ex situ thermal desorption (TD) compared with wheat grown in native topsoil (TS). Additionally, TD soils were mixed with TS at various ratios to assess the effectiveness of soil mixing as a procedure for enhancing productivity. In two greenhouse studies, TD soils alone produced similar amounts of grain and biomass as TS, although grain protein in TD soils was 22% (±7%) lower. After mixing TS into TD soils, the mean biomass and grain yield were reduced by up to 60%, but grain protein increased. These trends are likely the result of nutrient availability determined by soil organic matter and nutrient cycling performed by soil microorganisms. Thermal desorption soil had 84% (±2%) lower soil organic carbon than TS, and cumulative respiration was greatly reduced (66 ± 2%). From a food safety perspective, grain from TD soils did not show increased uptake of polycyclic aromatic hydrocarbons. Overall, this research suggests that TD soils are capable of producing safe, high-quality grain yields.
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Sarin R, Khandrika L, Hanitha R, Avula A, Batra M, Kaul S, Raj H, Shivkumar S, Gupta S, Khan E, Bhandari T, Prasad S, Reddy VA, Swarnalata G, Bakre M, Chatterjee S, Jain J. Epidemiological and survival analysis of triple-negative breast cancer cases in a retrospective multicenter study. Indian J Cancer 2017; 53:353-359. [PMID: 28244455 DOI: 10.4103/0019-509x.200682] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION This is a retrospective study with data collected from breast cancer cases from five major Apollo Hospitals across India, as part of a biobanking process. One aspect of our study focused specifically on data from triple-negative breast cancer (TNBC) cases. The aim of this study was to analyze epidemiology, treatment options, and survival of the patients with TNBC. Our goal was to draw conclusions on the preponderance of the disease and also to understand the outcomes using the existing therapy options. MATERIALS AND METHODS Data were collected after due ethical clearances and were coded with regard to patient identifiers to protect patient privacy. Data were not only from the various departments of the respective hospitals and the treating physicians but also from the follow-up made by hospital staff and social workers. RESULTS About 20% of all cases of breast cancer comprised TNBC. Although the disease is generally thought to be an early onset disease, there was no major difference in the median age of diagnosis of TNBC compared to other breast cancer cases. More than 85% of the TNBC cases were of early stage disease with <4% of the cases of metastatic cancer. Data on follow-up were somewhat sporadic as a good number of cases were lost to follow-up, but from the available data, recurrence rate was about 11%. Death, when it occurred, was mostly in the early periods of treatment with 35% of the events occurring before 3 years. The overall survival rates beyond 3 years were more than 86%. CONCLUSIONS Data and sample collection are an ongoing process, so we expect this data set to be enriched with more cases and longer duration of follow-up in a year. Preliminary analysis sheds light on the potential of such a collection both for understanding the epidemiology of the disease and also for conducting future studies with an eye toward improving treatment outcomes.
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Affiliation(s)
- R Sarin
- Indraprastha Apollo Hospitals, New Delhi, India
| | - L Khandrika
- Sapien Biosciences Pvt. Ltd., Hyderabad, Telangana, India
| | - Rnm Hanitha
- Sapien Biosciences Pvt. Ltd., Hyderabad, Telangana, India
| | - A Avula
- Sapien Biosciences Pvt. Ltd., Hyderabad, Telangana, India
| | - M Batra
- Sapien Biosciences Pvt. Ltd., Hyderabad, Telangana, India
| | - S Kaul
- Indraprastha Apollo Hospitals, New Delhi, India
| | - H Raj
- Apollo Speciality Hospital, Chennai, Tamil Nadu, India
| | - S Shivkumar
- Apollo Hospital Enterprises, Bengaluru, Karnataka, India
| | - S Gupta
- Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| | - E Khan
- Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| | - Tps Bhandari
- Apollo Hospital Enterprises, Hyderabad, Telangana, India
| | - Svss Prasad
- Apollo Hospital Enterprises, Hyderabad, Telangana, India
| | - V A Reddy
- Apollo Hospital Enterprises, Hyderabad, Telangana, India
| | - G Swarnalata
- Apollo Hospital Enterprises, Hyderabad, Telangana, India
| | - M Bakre
- OncoStem Diagnostics Pvt. Ltd., Bengaluru, Karnataka, India
| | | | - J Jain
- Indraprastha Apollo Hospitals, New Delhi, India
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Erdem H, Inan A, Guven E, Hargreaves S, Larsen L, Shehata G, Pernicova E, Khan E, Bastakova L, Namani S, Harxhi A, Roganovic T, Lakatos B, Uysal S, Sipahi OR, Crisan A, Miftode E, Stebel R, Jegorovic B, Fehér Z, Jekkel C, Pandak N, Moravveji A, Yilmaz H, Khalifa A, Musabak U, Yilmaz S, Jouhar A, Oztoprak N, Argemi X, Baldeyrou M, Bellaud G, Moroti RV, Hasbun R, Salazar L, Tekin R, Canestri A, Čalkić L, Praticò L, Yilmaz-Karadag F, Santos L, Pinto A, Kaptan F, Bossi P, Aron J, Duissenova A, Shopayeva G, Utaganov B, Grgic S, Ersoz G, Wu AKL, Lung KC, Bruzsa A, Radic LB, Kahraman H, Momen-Heravi M, Kulzhanova S, Rigo F, Konkayeva M, Smagulova Z, Tang T, Chan P, Ahmetagic S, Porobic-Jahic H, Moradi F, Kaya S, Cag Y, Bohr A, Artuk C, Celik I, Amsilli M, Gul HC, Cascio A, Lanzafame M, Nassar M. The burden and epidemiology of community-acquired central nervous system infections: a multinational study. Eur J Clin Microbiol Infect Dis 2017; 36:1595-1611. [PMID: 28397100 DOI: 10.1007/s10096-017-2973-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 02/12/2017] [Accepted: 03/22/2017] [Indexed: 12/11/2022]
Abstract
Risk assessment of central nervous system (CNS) infection patients is of key importance in predicting likely pathogens. However, data are lacking on the epidemiology globally. We performed a multicenter study to understand the burden of community-acquired CNS (CA-CNS) infections between 2012 and 2014. A total of 2583 patients with CA-CNS infections were included from 37 referral centers in 20 countries. Of these, 477 (18.5%) patients survived with sequelae and 227 (8.8%) died, and 1879 (72.7%) patients were discharged with complete cure. The most frequent infecting pathogens in this study were Streptococcus pneumoniae (n = 206, 8%) and Mycobacterium tuberculosis (n = 152, 5.9%). Varicella zoster virus and Listeria were other common pathogens in the elderly. Although staphylococci and Listeria resulted in frequent infections in immunocompromised patients, cryptococci were leading pathogens in human immunodeficiency virus (HIV)-positive individuals. Among the patients with any proven etiology, 96 (8.9%) patients presented with clinical features of a chronic CNS disease. Neurosyphilis, neurobrucellosis, neuroborreliosis, and CNS tuberculosis had a predilection to present chronic courses. Listeria monocytogenes, Staphylococcus aureus, M. tuberculosis, and S. pneumoniae were the most fatal forms, while sequelae were significantly higher for herpes simplex virus type 1 (p < 0.05 for all). Tackling the high burden of CNS infections globally can only be achieved with effective pneumococcal immunization and strategies to eliminate tuberculosis, and more must be done to improve diagnostic capacity.
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Affiliation(s)
- H Erdem
- Principal Coordinator of ID-IRI, Ankara, Turkey.
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, 06010, Etlik, Ankara, Turkey.
| | - A Inan
- Department of Infectious Diseases and Clinical Microbiology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - E Guven
- Beytepe Murat Erdi Eker State Hospital, Ankara, Turkey
| | - S Hargreaves
- International Health Unit, Section of Infectious Diseases and Immunity, Commonwealth Building, Hammersmith Campus, Imperial College London, London, UK
| | - L Larsen
- Department of Infectious Diseases Q, Odense University Hospital, Odense, Denmark
| | - G Shehata
- Department of Neurology and Psychiatry, Assiut University Hospital, Assiut, Egypt
| | - E Pernicova
- Avenier, Centres for Vaccination and Travel Medicine, Prague, Czech Republic
- Faculty Hospital Brno, Department of Infectious Diseases, Brno, Czech Republic
| | - E Khan
- Shifa International Hospital, Islamabad, Pakistan
| | - L Bastakova
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - S Namani
- Infectious Diseases Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo
| | - A Harxhi
- Service of Infectious Disease, University Hospital Center of Tirana, Tirana, Albania
| | - T Roganovic
- Infectious Diseases Clinic, University Hospital Clinical Center Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - B Lakatos
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - S Uysal
- Department of Infectious Diseases and Clinical Microbiology, Seyfi Demirsoy State Hospital, Buca, İzmir, Turkey
| | - O R Sipahi
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - A Crisan
- Department of Infectious Diseases, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - E Miftode
- Hospital of Infectious Diseases, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania
| | - R Stebel
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - B Jegorovic
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Z Fehér
- Department of Infectious Diseases, Markusovszky University Teaching Hospital, Szombathely, Hungary
| | - C Jekkel
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - N Pandak
- General Hospital Slavonski Brod, Department for Infectious Diseases, School of Medicine, University of Split, Split, Croatia
| | - A Moravveji
- Social Determinants of Health Research Center, Department of Community Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - A Khalifa
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - U Musabak
- Department of Immunology and Allergy, Losante Hospital, Ankara, Turkey
| | - S Yilmaz
- Gulhane Medical Academy, Blood Bank, Clinical Microbiology Division, Ankara, Turkey
| | - A Jouhar
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - N Oztoprak
- Antalya Education and Research Hospital, Antalya, Turkey
| | - X Argemi
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - M Baldeyrou
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - G Bellaud
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - R V Moroti
- Carol Davila University of Medicine and Pharmacy and Matei Bals National Institute for Infectious Diseases, Bucharest, Romania
| | - R Hasbun
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - L Salazar
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - R Tekin
- Department of Infectious Diseases and Clinical Microbiology, Dicle University School of Medicine, Diyarbakir, Turkey
| | - A Canestri
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - L Čalkić
- Department of Infectious Diseases, Zenica Cantonal Hospital, Zenica, Bosnia and Herzegovina
| | - L Praticò
- University Division of Infectious and Tropical Diseases, Piazza Spedali Civili, 25123, Brescia, Italy
| | - F Yilmaz-Karadag
- Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - L Santos
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Pinto
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - F Kaptan
- Department of Infectious Diseases and Clinical Microbiology, Katip Celebi University School of Medicine, Izmir, Turkey
| | - P Bossi
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - J Aron
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - A Duissenova
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - G Shopayeva
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - B Utaganov
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - S Grgic
- Clinic for Infectious Diseases, University Hospital of Mostar, Mostar, Bosnia and Herzegovina
| | - G Ersoz
- Department of Infectious Diseases and Clinical Microbiology, Mersin University School of Medicine, Mersin, Turkey
| | - A K L Wu
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - K C Lung
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - A Bruzsa
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - L B Radic
- Department of Infectious Diseases, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - H Kahraman
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - M Momen-Heravi
- Department of Infectious Diseases, Social Determinants of Health Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - S Kulzhanova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - F Rigo
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Konkayeva
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - Z Smagulova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - T Tang
- Infectious Diseases Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - P Chan
- Neurology Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - S Ahmetagic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - H Porobic-Jahic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - F Moradi
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - S Kaya
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University School of Medicine, Trabzon, Turkey
| | - Y Cag
- School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - A Bohr
- Institute of Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - C Artuk
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - I Celik
- Department of Infectious Diseases and Clinical Microbiology, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - M Amsilli
- Infectious Diseases Unit, CHU Bicètre, Paris, France
| | - H C Gul
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - A Cascio
- Department of Health Promotion Sciences and Mother and Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - M Lanzafame
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Nassar
- Infection Control Department, Saudi German Hospital Group, Jeddah, Saudi Arabia
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26
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Mal PB, Farooqi J, Irfan S, Hughes MA, Khan E. Reduced susceptibility to chlorhexidine disinfectant among New Delhi metallo-beta-lactamase-1 positive Enterobacteriaceae and other multidrug-resistant organisms: Report from a tertiary care hospital in Karachi, Pakistan. Indian J Med Microbiol 2017; 34:346-9. [PMID: 27514958 DOI: 10.4103/0255-0857.188338] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
We analysed susceptibility of multidrug-resistant organisms (MDROs) including New Delhi metallo-beta-lactamase-1 positive Enterobacteriaceae to chlorhexidine and compared results to their susceptible counterparts. Susceptibilities of chlorhexidine digluconate in a standard (CHX-S) preparation and two commercial disinfectants containing different CHX concentrations (2% w/v and 4% w/w) were performed. MDROs had narrower range of higher CHX-S minimum inhibitory concentrations (MICs) as compared to pan-sensitive organisms. The MIC values for commercial disinfectants products for MDROs were many folds higher (20-600 times), than CHX-S for in vitro use. Increasing antibiotic resistance among bacterial isolates can be an indirect marker of reduced susceptibility to chlorhexidine in hospital setting.
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Affiliation(s)
- P B Mal
- Department of Pathology and Laboratory Medicine, Section of Clinical Microbiology, Aga Khan University, Karachi - 74800, Pakistan
| | - J Farooqi
- Department of Pathology and Laboratory Medicine, Section of Clinical Microbiology, Aga Khan University, Karachi - 74800, Pakistan
| | - S Irfan
- Department of Pathology and Laboratory Medicine, Section of Clinical Microbiology, Aga Khan University, Karachi - 74800, Pakistan
| | - M A Hughes
- Department of Medicine, Division of Infectious Diseases, University of Virginia 22908, USA
| | - E Khan
- Department of Pathology and Laboratory Medicine, Section of Clinical Microbiology, Aga Khan University, Karachi - 74800, Pakistan
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Chuang M, Halabi A, Horsfall M, Sinhal A, Depasquale C, Vaile J, Khan E, Jones D, Chew D. Invasive Management of Acute Coronary Syndrome: Interaction with Competing Risks. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.388] [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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28
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Khan E, Shukla A, Jadav N, Telford R, Ayala AP, Tandon P, Vangala VR. Study of molecular structure, chemical reactivity and H-bonding interactions in the cocrystal of nitrofurantoin with urea. NEW J CHEM 2017. [DOI: 10.1039/c7nj01345k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cocrystal of nitrofurantoin with urea (C8H6N4O5)·(CH4N2O), a non-ionic supramolecular complex, has been studied.
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Affiliation(s)
- E. Khan
- Department of Physics
- University of Lucknow
- Lucknow 226 007
- India
| | - A. Shukla
- Department of Physics
- University of Lucknow
- Lucknow 226 007
- India
| | - N. Jadav
- Centre for Pharmaceutical Engineering Science and School of Pharmacy and Medical Sciences
- University of Bradford
- Bradford
- UK
| | - R. Telford
- School of Chemistry and Biosciences
- University of Bradford
- Bradford
- UK
| | - A. P. Ayala
- Departamento de Física
- Universidade Federal do Ceará
- Fortaleza
- Brazil
| | - P. Tandon
- Department of Physics
- University of Lucknow
- Lucknow 226 007
- India
| | - V. R. Vangala
- Centre for Pharmaceutical Engineering Science and School of Pharmacy and Medical Sciences
- University of Bradford
- Bradford
- UK
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29
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Khan E, Ambrose NL, Ahnström J, Kiprianos AP, Stanford MR, Eleftheriou D, Brogan PA, Mason JC, Johns M, Laffan MA, Haskard DO. A low balance between microparticles expressing tissue factor pathway inhibitor and tissue factor is associated with thrombosis in Behçet's Syndrome. Sci Rep 2016; 6:38104. [PMID: 27924945 PMCID: PMC5141484 DOI: 10.1038/srep38104] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 08/17/2016] [Accepted: 10/26/2016] [Indexed: 12/14/2022] Open
Abstract
Thrombosis is common in Behçet's Syndrome (BS), and there is a need for better biomarkers for risk assessment. As microparticles expressing Tissue Factor (TF) can contribute to thrombosis in preclinical models, we investigated whether plasma microparticles expressing Tissue Factor (TF) are increased in BS. We compared blood plasma from 72 healthy controls with that from 88 BS patients (21 with a history of thrombosis (Th+) and 67 without (Th-). Using flow cytometry, we found that the total plasma MP numbers were increased in BS compared to HC, as were MPs expressing TF and Tissue Factor Pathway Inhibitor (TFPI) (all p < 0.0001). Amongst BS patients, the Th+ group had increased total and TF positive MP numbers (both p ≤ 0.0002) compared to the Th- group, but had a lower proportion of TFPI positive MPs (p < 0.05). Consequently, the ratio of TFPI positive to TF positive MP counts (TFPI/TF) was significantly lower in Th+ versus Th- BS patients (p = 0.0002), and no patient with a TFPI/TF MP ratio >0.7 had a history of clinical thrombosis. We conclude that TF-expressing MP are increased in BS and that an imbalance between microparticulate TF and TFPI may predispose to thrombosis.
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Affiliation(s)
- E Khan
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - N L Ambrose
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - J Ahnström
- Centre for Haematology, Department of Medicine, Imperial College, London, UK
| | - A P Kiprianos
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - M R Stanford
- Department of Ophthalmology, King's College, London, UK
| | - D Eleftheriou
- Institute of Child Heath, University College, London, UK
| | - P A Brogan
- Institute of Child Heath, University College, London, UK
| | - J C Mason
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - M Johns
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - M A Laffan
- Centre for Haematology, Department of Medicine, Imperial College, London, UK
| | - D O Haskard
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
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Bartlett M, Klimis H, Khan E, Patel M, Thiagalingam A, Altman M, Wynne D, Denniss R, Chow C. A Pilot of a Heart Failure Stabilisation Clinic. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.224] [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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Chuard D, Anthonipillai V, Dendale R, Nauraye C, Khan E, Mabit C, De Marzi L, Narici L. Mechanisms of phosphene generation in ocular proton therapy as related to space radiation exposure. Life Sci Space Res (Amst) 2016; 10:23-28. [PMID: 27662784 DOI: 10.1016/j.lssr.2016.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/15/2016] [Accepted: 06/23/2016] [Indexed: 06/06/2023]
Abstract
Particle therapy provides an opportunity to study the human response to space radiation in ground-based facilities. On this basis, a study of light flashes analogous to astronauts' phosphenes reported by patients undergoing ocular proton therapy has been undertaken. The influence of treatment parameters on phosphene generation was investigated for 430 patients treated for a choroidal melanoma at the proton therapy centre of the Institut Curie (ICPO) in Orsay, France, between 2008 and 2011. 60% of them report light flashes, which are predominantly (74%) blue. An analysis of variables describing the patient's physiology, properties of the tumour and dose distribution shows that two groups of tumour and beam variables are correlated with phosphene occurrence. Physiology is found to have no influence on flash triggering. Detailed correlation study eventually suggests a possible twofold mechanism of phosphene generation based on (i) indirect Cerenkov light in the bulk of the eye due to nuclear interactions and radioactive decay and (ii) direct excitation of the nerve fibres in the back of the eye and/or radical excess near the retina.
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Affiliation(s)
- D Chuard
- Institut de Physique Nucléaire IN2P3/CNRS, Univ. Paris-Sud, Orsay, France.
| | - V Anthonipillai
- Institut de Physique Nucléaire IN2P3/CNRS, Univ. Paris-Sud, Orsay, France
| | - R Dendale
- Institut Curie - Centre de Protonthérapie, Campus universitaire, Orsay, France
| | - C Nauraye
- Institut Curie - Centre de Protonthérapie, Campus universitaire, Orsay, France
| | - E Khan
- Institut de Physique Nucléaire IN2P3/CNRS, Univ. Paris-Sud, Orsay, France
| | - C Mabit
- Institut Curie - Centre de Protonthérapie, Campus universitaire, Orsay, France
| | - L De Marzi
- Institut Curie - Centre de Protonthérapie, Campus universitaire, Orsay, France
| | - L Narici
- Department of Physics, University of Rome 'Tor Vergata', Rome, Italy
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Khan E, Brieger D, Amerena J, Atherton J, Farshid A, Ilton M, Juergens C, Kangaharan N, Rajaratnam R, Sweeney A, Walters D, Chow C. Gender Differences in Hospital Management of ST-Elevation Myocardial Infarction Patients. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.105] [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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Irfan S, Fasih N, Ghanchi NK, Khan E. Isolation frequency and susceptibility pattern of non-O1 and non-O139 Vibrio cholerae in a tertiary health care laboratory, 1999-2012. East Mediterr Health J 2016; 22:142-7. [PMID: 27180742 DOI: 10.26719/2016.22.2.142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 11/24/2015] [Indexed: 11/09/2022]
Abstract
In the past decade the importance of non-O1 and non-O139 strains of Vibrio cholerae has been highlighted globally. This study aimed to evaluate the frequency and antimicrobial susceptibility profile of non-O1 and non-O139 V. cholerae in Pakistan. Data of stool specimens yielding growth of non-O1 and non-O139 V. cholerae isolated at a national referral laboratory from 1999 to 2012 were retrospectively analysed and evaluated for resistance to ampicillin, tetracycline, chloramphenicol, co-trimoxazole and ofloxacin. A total of 95 800 stool samples submitted over 1999-2012 yielded 3668 strains of V. cholerae, of which 6% were non-O1 and non-O139 V. cholerae. A high isolation rate was found in the summer season, with a peak in the year 2003. Antimicrobial susceptibility data revealed increasing resistance to co-trimoxazole and ampicillin, but strains remained highly susceptible to ofloxacin. Active surveillance of serotypes and antimicrobial susceptibility is essential to predict future epidemics and define measures to curtail the disease.
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Affiliation(s)
- S Irfan
- Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan
| | - N Fasih
- Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan
| | - N K Ghanchi
- Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan
| | - E Khan
- Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan
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Ambrose N, Khan E, Ravindran R, Lightstone L, Abraham S, Botto M, Johns M, Haskard DO. The exaggerated inflammatory response in Behçet's syndrome: identification of dysfunctional post-transcriptional regulation of the IFN-γ/CXCL10 IP-10 pathway. Clin Exp Immunol 2015; 181:427-33. [PMID: 25982097 DOI: 10.1111/cei.12655] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2015] [Indexed: 12/20/2022] Open
Abstract
The mechanisms underlying the exaggerated inflammatory response in Behçet's syndrome (BS) remain poorly understood. We investigated the response of CD14(+) blood monocytes to interferon (IFN)-γ, focusing on the chemokine CXCL10. Chemokine synthesis and release were analysed at a protein and mRNA level following stimulation with IFN-γ. Findings in BS patients were compared with 25 healthy controls (HC), 15 rheumatoid arthritis (RA) and 15 systemic lupus erythematosus (SLE) disease control patients. BS monocytes produced significantly more CXCL10 protein than HC monocytes from 2 h following IFN-γ stimulation, despite equivalent quantities of mRNA, suggesting more efficient translation. This was significantly more pronounced in BS with high disease activity and in those with ocular and neurological clinical manifestations. The imbalance between CXCL10 protein and mRNA expression was not observed in either RA or SLE patients, and was not seen with other chemokines studied (CXCL9, CXCL11 and CCL2). Furthermore, BS monocytes treated with an alternative stimulant (LPS) did not show abnormal tumour necrosis factor (TNF)-α release. Sucrose density gradients to segregate monocyte CXCL10 mRNA into free RNA or polysome-associated RNA showed equal proportions in BS and HC samples, suggesting that the difference between BS and HC may be due to reduced negative control of CXCL10 translation in BS at a post-initiation level. We conclude that BS monocytes have dysfunctional post-transcriptional regulation of CXCL10 mRNA, resulting in over-expression of CXCL10 protein upon IFN-γ stimulation. As CXCL10 is a chemokine that recruits mononuclear cells, this abnormality may contribute to the exaggerated inflammatory responses that characterizes BS.
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Affiliation(s)
- N Ambrose
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - E Khan
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - R Ravindran
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - L Lightstone
- Division of Immunology and Inflammation, Imperial College, London, UK
| | - S Abraham
- Division of Immunology and Inflammation, Imperial College, London, UK
| | - M Botto
- Division of Immunology and Inflammation, Imperial College, London, UK
| | - M Johns
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
| | - D O Haskard
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College, London, UK
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Khan E, Loh M. Association between post-operative mean arterial pressure and perioperative troponin rise in elderly patients undergoing surgical repair for neck of femur fractures. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.058] [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: 11/30/2022]
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Mooney J, Hillis G, Lee V, Khan E, Halliwell R, Vicaretti M, Moncrieff C, Chow C. Cardiac assessment prior to non-cardiac surgery. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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Mooney J, Hillis G, Lee V, Khan E, Halliwell R, Vicaretti M, Moncrieff C, Chow C. Prevalence and management of vascular disease in Australian patients undergoing non-cardiac surgery. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.648] [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: 10/23/2022]
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Ali Nasir A, Younus M, Rashid A, Abdul Khaliq S, Khan E, Shah SH, Aslam A, Ghumman MA, Joiya MH. Clinico-pathological findings of Clostridium perfringens type D enterotoxaemia in goats and its hemolytic activity in different erythrocytes. Iran J Vet Res 2015; 16:94-99. [PMID: 27175159 PMCID: PMC4789248] [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] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 10/01/2014] [Accepted: 10/27/2014] [Indexed: 06/05/2023]
Abstract
The present investigation was conducted to study the effects of experimental Clostridium perfringens type D enterotoxaemia in teddy goats. Clinical signs started to appear after 30 min of experimental infection like anorexia, diarrhea, dehydration, frothing and dyspnea. Gross lesions consisted of severe congestion in tissues of varying intensity with enlarged mesenteric lymph nodes while histological examination revealed edema of lungs, kidney, and lymph nodes and to some extent in brain along with hemorrhages in lungs and intestines. Clostridium perfringens type D carrying alpha and epsilon toxin genes were amplified with amplicon size about 247 bp and 665 bp, respectively. Human erythrocytes showed the highest hemolysis, 68%, followed by mice, 57%, against culture supernatants. The percentage of hemolysis was significantly higher at 37°C as compared to 25°C except for rabbit and dog.
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Affiliation(s)
- A. Ali Nasir
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
| | - M. Younus
- Department of Pathology, College of Veterinary Science, Jhang Campus, Jhang, Pakistan
| | - A. Rashid
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
| | - S. Abdul Khaliq
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
| | - E. Khan
- Department of Pathology, College of Veterinary Science, Jhang Campus, Jhang, Pakistan
| | - S. H. Shah
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
| | - A. Aslam
- Department of Media Sterilization, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M. A. Ghumman
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
| | - M. H. Joiya
- Division of Bacteriology, Veterinary Research Institute, Lahore Cantt-54810, Pakistan
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Varshney D, Khan E, Choudhary D. Interpretation of temperature-dependent thermoelectric power behaviour of La 0.67Ba 0.33MnO 3manganites. Mol Phys 2014. [DOI: 10.1080/00268976.2014.936920] [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: 10/25/2022]
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Vandebrouck M, Gibelin J, Khan E, Achouri NL, Baba H, Beaumel D, Blumenfeld Y, Caamaño M, Càceres L, Colò G, Delaunay F, Fernandez-Dominguez B, Garg U, Grinyer GF, Harakeh MN, Kalantar-Nayestanaki N, Keeley N, Mittig W, Pancin J, Raabe R, Roger T, Roussel-Chomaz P, Savajols H, Sorlin O, Stodel C, Suzuki D, Thomas JC. Measurement of the isoscalar monopole response in the neutron-rich nucleus 68Ni. Phys Rev Lett 2014; 113:032504. [PMID: 25083638 DOI: 10.1103/physrevlett.113.032504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Indexed: 06/03/2023]
Abstract
The isoscalar monopole response has been measured in the unstable nucleus (68)Ni using inelastic alpha scattering at 50A MeV in inverse kinematics with the active target MAYA at GANIL. The isoscalar giant monopole resonance (ISGMR) centroid was determined to be 21.1 ± 1.9 MeV and indications for a soft monopole mode are provided for the first time at 12.9 ± 1.0 MeV. Analysis of the corresponding angular distributions using distorted-wave-born approximation with random-phase approximation transition densities indicates that the L = 0 multipolarity dominates the cross section for the ISGMR and significantly contributes to the low-energy mode. The L=0 part of this low-energy mode, the soft monopole mode, is dominated by neutron excitations. This demonstrates the relevance of inelastic alpha scattering in inverse kinematics in order to probe both the ISGMR and isoscalar soft modes in neutron-rich nuclei.
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Affiliation(s)
- M Vandebrouck
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France and LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - E Khan
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - N L Achouri
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Beaumel
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - Y Blumenfeld
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - M Caamaño
- Universidade de Santiago de Compostela, E-15706 Santiago de Compostela, Spain
| | - L Càceres
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - G Colò
- Dipartimento de Fisica Università degli Studi di Milano and INFN, Sezione di Milano, 20133 Milano, Italy
| | - F Delaunay
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | | | - U Garg
- Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - G F Grinyer
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - M N Harakeh
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France and KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | | | - N Keeley
- National Centre for Nuclear Research ul. Andrzeja Soł tana 7, 05-400 Otwock, Poland
| | - W Mittig
- NSCL, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - J Pancin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - R Raabe
- Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium
| | - T Roger
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France and Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium
| | | | - H Savajols
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - D Suzuki
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France and NSCL, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - J C Thomas
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
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Karamendin K, Kydyrmanov A, Kasymbekov Y, Khan E, Daulbayeva K, Asanova S, Zhumatov K, Seidalina A, Sayatov M, Fereidouni SR. Continuing evolution of equine influenza virus in Central Asia, 2007-2012. Arch Virol 2014; 159:2321-7. [DOI: 10.1007/s00705-014-2078-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 03/31/2014] [Indexed: 10/25/2022]
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Khan E. Recent progress in EDF-based methods applied to nuclear properties. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146601009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Khan E, Sukumaran P, Chew H. Anti erosive potential of bioactive glasses on dentine. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.335] [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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Ferrari G, Tasciotti L, Khan E, Kiani A. Foot-and-Mouth Disease and Its Effect on Milk Yield: An Economic Analysis on Livestock Holders in Pakistan. Transbound Emerg Dis 2013; 61:e52-9. [DOI: 10.1111/tbed.12072] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Indexed: 11/27/2022]
Affiliation(s)
- G. Ferrari
- Food and Agriculture Organization (FAO) of United Nations; Via Terme di Caracalla; Rome Italy
| | - L. Tasciotti
- Institute of Social Studies; Erasmus University of Rotterdam; Den Haag The Netherlands
| | - E. Khan
- Food and Agriculture Organization (FAO) of United Nations; Via Terme di Caracalla; Rome Italy
| | - A. Kiani
- Food and Agriculture Organization (FAO) of United Nations; Via Terme di Caracalla; Rome Italy
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Irfan S, Ahmad A, Guhar D, Khan E, Malik F, Mahmood S, Zafar A. Fluoroquinolone and macrolide co-resistance in clinical isolates of Campylobacter species: a 15-year study in Karachi, Pakistan. East Mediterr Health J 2012; 16:1226-30. [PMID: 24988396 DOI: 10.26719/2010.16.12.1226] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 03/05/2009] [Indexed: 11/09/2022]
Abstract
Fluoroquinolone and macrolide antibiotics are generally considered as first-line drugs for the treatment of severe campylobacteriosis. This study was conducted to analyse the trend of erythromycin and ofloxacin resistance among Campylobacter spp. isolated from stool specimens over a period of 15 years (1992-2007) at The Aga Khan University clinical laboratory in Karachi, Pakistan. A total of 83 396 stool specimens were processed, with a 14% isolation rate for enteric pathogens. The isolation rate of Campylobacter spp. was low during 1992-93 (6%-13%), peaked in 1996 (46%), then ranged from 20% to 40%. We report a rising trend in ofloxacin resistance, re-emergence of erythromycin resistance and indications of co-resistance to both drugs in clinical isolates of Campylobacter spp.
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Affiliation(s)
- S Irfan
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - A Ahmad
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - D Guhar
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - E Khan
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - F Malik
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - S Mahmood
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
| | - A Zafar
- Department of Pathology & Microbiology, Aga Khan University, Karachi, Pakistan
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Khan E, Ismail S, Muirhead R. Incidence of symptomatic brain metastasis following radical radiotherapy for non-small cell lung cancer: is there a role for prophylactic cranial irradiation? Br J Radiol 2012; 85:1546-50. [PMID: 22993386 PMCID: PMC3611712 DOI: 10.1259/bjr/23314501] [Citation(s) in RCA: 6] [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: 11/29/2011] [Revised: 05/29/2012] [Accepted: 06/13/2012] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Brain metastases following radical radiotherapy for non-small cell lung cancer (NSCLC) are a recognised phenomenon; however, the incidence of symptomatic brain metastasis is currently unknown. The aim of the study was to identify the number of patients, staged in accordance with National Institute for Health and Clinical Excellence (NICE) guidance, who developed symptomatic brain metastasis following radical radiotherapy. There are two aims: to evaluate NICE guidance; and to provide vital information on the likely benefit of prophylactic cranial irradiation (PCI) in reducing neurological symptoms from brain metastasis. METHODS A retrospective review of 455 patients with NSCLC who had undergone radical radiotherapy in 2009 and 2010 was performed. Computer-based systems were used to identify patient and tumour demographics, the staging procedures performed and whether brain imaging had identified brain metastasis in the follow-up period. RESULTS The total number of patients with brain metastasis within 6 months was 3.7%. The proportion of brain metastasis within 6 months in Stage I, II and III NSCLC throughout both years was 2.8%, 1.0% and 5.7%, respectively. Within the follow-up period (median 16 months, range 6-30 months), the total number of patients who developed symptomatic brain metastasis was 7.9%. CONCLUSION Patients staged in accordance with NICE guidance, of whom only 7.7% underwent brain staging, have a minimal incidence of brain metastasis following radical radiotherapy. The number of patients developing symptoms from brain metastasis following radical radiotherapy may be less than the morbidity caused by PCI. ADVANCES IN KNOWLEDGE This finding supports the NICE guidance and brings into question the potential benefit of PCI.
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Affiliation(s)
- E Khan
- The Beatson West of Scotland Cancer Centre, Glasgow, UK
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Abstract
Hepatitis delta virus (HDV) coinfection or superinfection in hepatitis B virus (HBV)-infected patients results in a more aggressive liver disease, with more often fulminant forms and more rapid progression to cirrhosis and hepatocellular carcinoma. The mechanism(s) for this pejorative evolution remains unclear. To explore a specific HDV pathogenesis, we used a model of transient transfection of plasmids expressing the small (sHDAg or p24) or the large (LHDAg or p27) delta antigen in hepatocyte cell lines. We found that the production of reactive oxygen species was significantly higher in cells expressing p27. Consequently, p27 activated the signal transducer and activator of transcription-3 (STAT-3) and the nuclear factor kappa B (NF-κB) via the oxidative stress pathway. Moreover in the presence of antioxidants (PDTC, NAC) or calcium inhibitors (TMB-8, BAPTA-AM, Ruthenium Red), p27-induced activation of STAT-3 and NF-κB was dramatically reduced. Similarly, using a mutated form of p27, where the cysteine 211-isoprenylation residue was replaced by a serine, a significant reduction of STAT-3 and NF-κB activation was seen, suggesting the involvement of isoprenylation in this process. Additionally, we show that p27 is able to induce oxidative stress through activation of NADPH oxidase-4. These results provide insight into the mechanisms by which p27 can alter intracellular events relevant to HDV-related liver pathogenesis.
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Affiliation(s)
- V Williams
- Service de bactériologie, virologie - hygiène, hôpital Avicenne, Assistance Publique des Hôpitaux de Paris, Laboratoire associé au Centre National de Référence des Hépatites B, C et Delta, Université Paris Nord, Paris
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Khan E, Margueron J, Vidaña I. Constraining the nuclear equation of state at subsaturation densities. Phys Rev Lett 2012; 109:092501. [PMID: 23002826 DOI: 10.1103/physrevlett.109.092501] [Citation(s) in RCA: 6] [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] [Received: 11/22/2011] [Revised: 03/27/2012] [Indexed: 06/01/2023]
Abstract
Only one-third of the nucleons in 208Pb occupy the saturation density area. Consequently, nuclear observables related to the average properties of nuclei, such as masses or radii, constrain the equation of state not at the saturation density but rather around the so-called crossing density, localized close to the mean value of the density of nuclei: ρ is approximately equal to 0.11 fm(-3). This provides an explanation for the empirical fact that several equation of state quantities calculated with various functionals cross at a density significantly lower than the saturation one. The third derivative M of the energy per unit of volume at the crossing density is constrained by the giant monopole resonance measurements in an isotopic chain rather than the incompressibility at saturation density. The giant monopole resonance measurements provide M=1100±70 MeV (6% uncertainty), whose extrapolation gives K(∞)=230±40 MeV (17% uncertainty).
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Affiliation(s)
- E Khan
- Institut de Physique Nucléaire, Université Paris-Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
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Khan E, Ismail S, Muirhead R. PD-0292 IS THERE A ROLE FOR PCI IN NSCLC: A RETROSPECTIVE STUDY OF BRAIN METASTASIS AFTER RADICAL RADIOTHERAPY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70631-x] [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: 11/30/2022]
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