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Ahmed E, Assou S, Foisset F, Bourdais C, Vanheerswynghels M, Petit A, Gamez AS, Gras D, Chanez P, de Vos J, Hammad H, Bourdin A, Lambrecht B. [Modeling T2 high severe asthma using human induced pluripotent stem cells (hiPSC)]. Rev Mal Respir 2024; 41:289-293. [PMID: 38461089 DOI: 10.1016/j.rmr.2024.02.012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 02/05/2024] [Indexed: 03/11/2024]
Abstract
Severe asthma patients with persistent airflow obstruction are characterized by functional obstruction due to mucus plugs containing mucins, fibrin, and eosinophil derived Charcot- Leyden crystals. The molecular mechanisms underlying this endotype are not clearly understood. Developing new models is crucial to respiratory research insofar as critical differences exist between human and rodent airway epithelium. We (and other teams) have shown that it is possible to reconstitute in vitro a complex and functional airway epithelium displaying all the features described in vivo from human-induced pluripotent stem cells (hiPSC). Our aim is to establish a human in vitro model of severe asthma that will recapitulate airway epithelium remodeling and mucus plugs.
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Affiliation(s)
- E Ahmed
- Laboratoire d'immunologie muqueuse, centre VIB-UGent pour la recherche sur l'inflammation, université de Gand, 9000 Gand, Belgique; Département de maladies respiratoires, université de Montpellier, CHU de Montpellier, hôpital Arnaud de Villeneuve, Montpellier, France
| | - S Assou
- IRMB, Université de Montpellier, INSERM, CHU de Montpellier, Montpellier, France
| | - F Foisset
- IRMB, Université de Montpellier, INSERM, CHU de Montpellier, Montpellier, France
| | - C Bourdais
- IRMB, Université de Montpellier, INSERM, CHU de Montpellier, Montpellier, France
| | - M Vanheerswynghels
- Laboratoire d'immunologie muqueuse, centre VIB-UGent pour la recherche sur l'inflammation, université de Gand, 9000 Gand, Belgique
| | - A Petit
- Département de maladies respiratoires, université de Montpellier, CHU de Montpellier, hôpital Arnaud de Villeneuve, Montpellier, France
| | - A S Gamez
- Département de maladies respiratoires, université de Montpellier, CHU de Montpellier, hôpital Arnaud de Villeneuve, Montpellier, France
| | - D Gras
- Aix-Marseille université, INSERM, INRAE, C2VN, Marseille, France
| | - P Chanez
- Aix-Marseille université, INSERM, INRAE, C2VN, Marseille, France
| | - J de Vos
- IRMB, Université de Montpellier, INSERM, CHU de Montpellier, Montpellier, France
| | - H Hammad
- Laboratoire d'immunologie muqueuse, centre VIB-UGent pour la recherche sur l'inflammation, université de Gand, 9000 Gand, Belgique
| | - A Bourdin
- Département de maladies respiratoires, université de Montpellier, CHU de Montpellier, hôpital Arnaud de Villeneuve, Montpellier, France; PhyMedExp, université de Montpellier, INSERM, CHU de Montpellier, Montpellier, France.
| | - B Lambrecht
- Laboratoire d'immunologie muqueuse, centre VIB-UGent pour la recherche sur l'inflammation, université de Gand, 9000 Gand, Belgique; Département de médecine interne et pédiatrie, université de Gand, Gand, Belgique
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Bhattacharya K, Chandra Nath B, Ahmed E, Khanal P, Chanu NR, Deka S, Das D, Shrivastava AK. Integration of network pharmacology, molecular docking, and simulations to evaluate phytochemicals from Drymaria cordata against cervical cancer. RSC Adv 2024; 14:4188-4200. [PMID: 38292259 PMCID: PMC10825855 DOI: 10.1039/d3ra06297j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/05/2024] [Indexed: 02/01/2024] Open
Abstract
Introduction: Cervical cancer is prevalent among women worldwide. It is a type of cancer that occurs in the cells of the cervix, the lower part of the uterus. Mostly, it is observed in developing nations due to limited access to screening tools. Natural products with anticancer properties and fewer side effects have gained attention. Therefore, this study evaluates the potential of Drymaria cordata as a natural source for treating cervical cancer. Methodology: Phytocompounds present in Drymaria cordata were screened for their molecular properties and drug-likeness. The selected compounds were studied using systems biology tools such as network pharmacology, molecular docking, and molecular dynamics simulations, including MMGBSA studies. Results: Through network pharmacology, molecular docking, and molecular dynamics simulations, quercetin 3-O-β-d-glucopyranosyl-(1→2)-rhamnopyranoside was identified as a hit compound targeting HRAS and VEGFA proteins. These proteins were found to be responsible for the maximum number of pathway modulations in cervical cancer. Conclusion: Drymaria cordata exhibits potential for treating cervical cancer due to the presence of quercetin 3-O-β-d-glucopyranosyl-(1→2)-rhamnopyranoside. Further validation of these findings through in vitro and in vivo studies is required.
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Affiliation(s)
- Kunal Bhattacharya
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Royal School of Pharmacy, The Assam Royal Global University Assam 781035 India
| | | | - Ekbal Ahmed
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
| | - Pukar Khanal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy, KLE Academy of Higher Education and Research (KAHER) Belagavi 590010 India
| | - Nongmaithem Randhoni Chanu
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Faculty of Pharmaceutical Science, Assam Downtown University Assam 781026 India
| | - Satyendra Deka
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
| | - Dibyajyoti Das
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Department of Pharmaceutical Sciences, Dibrugarh University Dibrugarh 786004 India
| | - Amit Kumar Shrivastava
- Department of Pharmacology, Universal College of Medical Sciences, and Teaching Hospital Bhairahawa, Rupandehi 32900 Nepal
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Pearson J, Khan A, Bhogal T, Wong H, Law A, Mills S, Santamaria N, Bishop J, Cliff J, Errington D, Hall A, Hart C, Malik Z, Sripadam R, Innes H, Flint H, Langton G, Ahmed E, Jackson R, Palmieri C. A comparison of the efficacy of trastuzumab deruxtecan in advanced HER2-positive breast cancer: active brain metastasis versus progressive extracranial disease alone. ESMO Open 2023; 8:102033. [PMID: 37866031 PMCID: PMC10774880 DOI: 10.1016/j.esmoop.2023.102033] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/29/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND Trastuzumab deruxtecan (T-DXd) has demonstrated efficacy in patients with brain metastasis (BM), a group historically with poor outcomes. The prevalence of BMs in patients commencing T-DXd is currently unknown. No direct comparisons have been made of the activity of T-DXd in patients with active BM versus those with extracranial progression alone. This real-world study explored the prevalence of BMs in patients commencing T-DXd, the efficacy of T-DXd in active BM versus extracranial progression alone and the safety of T-DXd. PATIENTS AND METHODS Patients with human epidermal growth factor receptor 2-positive advanced breast cancer treated with T-DXd between June 2021 and February 2023 at our specialist cancer hospital were identified and notes reviewed. Clinicopathological information, prior treatment, the presence or absence of central nervous system (CNS) disease, outcomes and treatment-emergent adverse events (TEAEs) were recorded. RESULTS Twenty-nine female patients, with a median age of 52 years (interquartile range 44-62 years), were identified; the prevalence of BM was 41%. Median number of lines of prior therapy was 2 (range 2-6). At a median follow-up of 13.8 months, median progression-free survival (PFS) for the overall population was 13.9 months [95% confidence interval (CI) 12.4 months-not estimable (NE)], 16.1 months (95% CI 15.1 months-NE) for active BMs and 12.4 months (95% CI 8.3 months-NE) for progressive extracranial disease alone. The 12-month overall survival (OS) rate was 74% (95% CI 59% to 95%) in the overall population, and 83% (95% CI 58% to 100%) and 66% (95% CI 45% to 96%) for active BMs and extracranial disease only, respectively. Most common TEAEs were fatigue, alopecia, and constipation. In nine patients (31%, including two deaths), pneumonitis occurred. CONCLUSION In this real-world population, we demonstrate T-DXd to be effective in patients with active BMs and those with progressive extracranial disease alone. PFS and OS were numerically longer in those with active BMs. These data demonstrate that patients with active BM treated with T-DXd have at least comparable outcomes to those with extracranial disease alone. The high rate of pneumonitis warrants further consideration.
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Affiliation(s)
- J Pearson
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool; Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool
| | - A Khan
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - T Bhogal
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool; Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool
| | - H Wong
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - A Law
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - S Mills
- The Walton NHS Foundation Trust, Liverpool, UK
| | - N Santamaria
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - J Bishop
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - J Cliff
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - D Errington
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - A Hall
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - C Hart
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - Z Malik
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - R Sripadam
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - H Innes
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - H Flint
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - G Langton
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - E Ahmed
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool
| | - R Jackson
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool
| | - C Palmieri
- The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool; Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool.
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Sarker MR, Ali MA, Roy AK, Yesmin A, Dhar SK, Ahmed E, Ahmed F, Amin SE. Relationship between Clinical Profile, Severity and Outcome of Community Acquired Pneumonia with Hyponatremia in Children Aged 2-60 Months. Mymensingh Med J 2023; 32:613-619. [PMID: 37391948] [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: 07/02/2023]
Abstract
Hyponatremia is the most common electrolyte imbalance seen in clinical practice and a common laboratory findings in children with community acquired pneumonia. This study aimed to find out relationship between clinical profile, severity and outcome of community acquired pneumonia with hyponatremia in children aged 2-60 months. This descriptive cross-sectional study was done in pediatrics department of Mymensingh Medical College Hospital, Bangladesh. Study period was 6 month from November 2016 to April 2017. Data were collected from 2 months to 60 months old children who fulfill the selection criteria. In this study sampling technique was purposive. Detailed history was taken, and meticulous examinations and relevant investigations were performed. 100 patients with community acquired pneumonia were enrolled, 34.0% patient had hyponatremia and 66.0% patients had no hyponatremia. Hyponatremia is more marked (45.5%) in severe pneumonia followed by moderate pneumonia (33.3%) and no hyponatremia found in mild pneumonia. Mean temperature, respiratory rate, heart rate, head nodding, nasal flaring, grunting, stridor, cyanosis, convulsion, feeding problem, Poor air entry were significantly higher in patient of pneumonia with hyponatremia when compared to patient of pneumonia without hyponatremia. Mean duration of symptoms and mean duration of hospital stay were also significantly higher in patient of pneumonia with hyponatremia. The mean serum sodium concentration was 132.18±1.51mmol/L in hyponatremic patients and 137.91±1.94mmol/L in normonatremic patients. Mean values of total leucocyte count, ESR, and C-reactive protein were significantly higher in patient of pneumonia with hyponatremia. Serum hemoglobin was significantly lower in hyponatremic patients than normonatremic patients. Maximum (55.9%) patients of community acquired pneumonia (CAP) with hyponatremia had patchy opacity, 26.5% had consolidation, 11.8% had interstitial opacity and 5.9% had pneumatocele. All the patients were treated with appropriate antibiotics and fluid and discharged after complete recovery without any complication. There was no death in the study population. From this study we can conclude that, hyponatremia is directly related with the severity of community acquired pneumonia (CAP). The intensity of clinical profile and investigation findings are also directly related with the severity of pneumonia.
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Affiliation(s)
- M R Sarker
- Dr Mitu Rani Sarker, Registrar (Paediatric Gastroenterology and Nutrition), Department of Pediatrics, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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Carey S, Woodruff K, Ahmed E, Olymbios M, Hall S. How Age, Sex, and Time Influence Dd-Cfdna in Heart Transplant (HT) Recipients: A Real-World Experience. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Dhar SK, Hoque MA, Islam MN, Akhtaruzzaman M, Saha BK, Yesmin A, Ahmed E, Sarker MR. Study on Blood Pressure Profile in School Children of Mymensingh City. Mymensingh Med J 2023; 32:320-329. [PMID: 37002741] [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: 04/04/2023]
Abstract
High blood pressure and its related problems are progressively assuming public health dimensions in developing countries like Bangladesh. There was a suggestion that hypertensive process can be aborted in its early stages. But it is poorly understood in its early stages. So, early natural history of hypertension and its evolution from the youth needs to be investigated. Objective of this study was to determine blood pressure distribution in school children aged 6-15 years. This descriptive cross-sectional study was conducted in the Department of Paediatrics, Mymensingh Medical College, Mymensingh, Bangladesh from November 2014 to October 2015. The sample was collected by simple random sampling from five different schools of Mymensingh after applying inclusion and exclusion criteria. After taking proper history and doing relevant examination, both systolic and diastolic BP was recorded by auscultatory method. Out of 994 children, 480(48.29%) were boys and 514(51.71%) were girls. In boys, the mean±SD of systolic and diastolic blood pressure (BP) were 105.9±10.8 mm of Hg and 67.4±6.7 mm of Hg and in girls it was 106.1±11.8 and 67.5±6.9 mm of Hg respectively. Systolic BP was found higher in girls belongs to 10-13 years. The study has shown that BP rises linearly with age and both systolic and diastolic BP has a significant positive correlation with age, sex, height and BMI in both sexes. This study also showed, 46(4.6%) children were hypertensive and 89(8.9%) were pre-hypertensive. Hypertension was found more in girls but there was no significant difference between two sexes. Hypertension was found more in relation to overweight, obesity and family history of hypertension. Hypertension is not uncommon in children. Routine blood pressure measurement should be conducted in all children.
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Affiliation(s)
- S K Dhar
- Dr Sonjib Kumar Dhar, Registrar (Paediatrics), Department of Paediatrics, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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TARIQ T, Ahmed S, Ahmed E, Mubarak M. WCN23-0534 CHARACTERISTICS AND OUTCOMES OF PATIENTS WITH IDIOPATHIC MEMBRANOPROLIFERATIVE GLOMERULONEPHRITIS BASED ON A NEW CLASSIFICATION: A SINGLE CENTER EXPERIENCE. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.155] [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: 03/22/2023] Open
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Lahmar Z, Ahmed E, Fort A, Vachier I, Bourdin A, Bergougnoux A. Hedgehog pathway and its inhibitors in chronic obstructive pulmonary disease (COPD). Pharmacol Ther 2022; 240:108295. [PMID: 36191777 DOI: 10.1016/j.pharmthera.2022.108295] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 05/03/2022] [Revised: 08/22/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022]
Abstract
COPD affects millions of people and is now ranked as the third leading cause of death worldwide. This largely untreatable chronic airway disease results in irreversible destruction of lung architecture. The small lung hypothesis is now supported by epidemiological, physiological and clinical studies. Accordingly, the early and severe COPD phenotype carries the most dreadful prognosis and finds its roots during lung growth. Pathophysiological mechanisms remain poorly understood and implicate individual susceptibility (genetics), a large part of environmental factors (viral infections, tobacco consumption, air pollution) and the combined effects of those triggers on gene expression. Genetic susceptibility is most likely involved as the disease is severe and starts early in life. The latter observation led to the identification of Mendelian inheritance via disease-causing variants of SERPINA1 - known as the basis for alpha-1 anti-trypsin deficiency, and TERT. In the last two decades multiple genome wide association studies (GWAS) identified many single nucleotide polymorphisms (SNPs) associated with COPD. High significance SNPs are located in 4q31 near HHIP which encodes an evolutionarily highly conserved physiological inhibitor of the Hedgehog signaling pathway (HH). HHIP is critical to several in utero developmental lung processes. It is also implicated in homeostasis, injury response, epithelial-mesenchymal transition and tumor resistance to apoptosis. A few studies have reported decreased HHIP RNA and protein levels in human adult COPD lungs. HHIP+/- murine models led to emphysema. HH pathway inhibitors, such as vismodegib and sonidegib, are already validated in oncology, whereas other drugs have evidenced in vitro effects. Targeting the Hedgehog pathway could lead to a new therapeutic avenue in COPD. In this review, we focused on the early and severe COPD phenotype and the small lung hypothesis by exploring genetic susceptibility traits that are potentially treatable, thus summarizing promising therapeutics for the future.
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Affiliation(s)
- Z Lahmar
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France
| | - E Ahmed
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Fort
- PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - I Vachier
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Bourdin
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Bergougnoux
- PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France; Laboratoire de Génétique Moléculaire et de Cytogénomique, CHU de Montpellier, Montpellier, France.
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Ahmad I, Shukrullah S, Naz M, Ahmad M, Ahmed E, Liu Y, Hussain A, Iqbal S, Ullah S. Recent advances and challenges in 2D/2D heterojunction photocatalysts for solar fuels applications. Adv Colloid Interface Sci 2022; 304:102661. [PMID: 35462267 DOI: 10.1016/j.cis.2022.102661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 03/26/2022] [Accepted: 04/01/2022] [Indexed: 12/29/2022]
Abstract
Although photocatalytic technology has emerged as an effective means of alleviating the projected future fuel crisis by converting sunlight directly into chemical energy, no visible-light-driven, low-cost, and highly stable photocatalyst has been developed to date. Due to considerably higher interfacial contact with numerous reactive sites, effective charge transmission and separation ability, and strong redox potentials, the focus has now shifted to 2D/2D heterojunction systems, which have exhibited effective photocatalytic performance. The fundamentals of 2D/2D photocatalysis for different applications and the classification of 2D/2D materials are first explained in this paper, followed by strategies to improve the photocatalytic performance of various 2D/2D heterojunction systems. Following that, current breakthroughs in 2D/2D metal-based and metal-free heterojunction photocatalysts, as well as their applications for H2 evolution via water splitting, CO2 reduction, and N2 fixation, are discussed. Finally, a brief overview of current constraints and predicted results for 2D/2D heterojunction systems is also presented. This paper lays out a strategy for developing efficient 2D/2D heterojunction photocatalysts and sophisticated technology for solar fuel applications in order to address the energy issue.
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Ancel J, Guecamburu M, Marques Da Silva V, Schilfarth P, Boyer L, Pilette C, Martin C, Devillier P, Berger P, Zysman M, Le Rouzic O, Gonzalez-Bermejo J, Degano B, Burgel PR, Ahmed E, Roche N, Deslee G. [Take-home messages from the COPD 2021 biennial of the French Society of Respiratory Diseases. Understanding to so as to better innovate]. Rev Mal Respir 2022; 39:427-441. [PMID: 35568574 DOI: 10.1016/j.rmr.2022.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/11/2022] [Accepted: 03/23/2022] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The first COPD biennial organized by the French Society of Respiratory Diseases (SPLF) took place on 17 December 2021. STATE OF THE ART The objective of the biennial was to discuss current knowledge regarding COPD pathophysiology, current treatments, research development, and future therapeutic approaches. PERSPECTIVES The different lecturers laid emphasis on the complexity of pathophysiologic mechanisms including bronchial, bronchiolar and parenchymal alterations, and also dwelt on the role of microbiota composition in COPD pathenogenesis. They pointed out that addition to inhaled treatments, ventilatory support and endoscopic approaches have been increasingly optimized. The development of new therapeutic pathways such as biotherapy and cell therapy (stem cells…) call for further exploration. CONCLUSIONS The dynamism of COPD research was repeatedly underlined, and needs to be further reinforced, the objective being to "understand so as to better innovate" so as to develop effective new strategies for treatment and management of COPD.
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Affiliation(s)
- J Ancel
- Inserm UMRS-1250, service de pneumologie, université Reims Champagne Ardenne, hôpital Maison Blanche, Reims, France
| | - M Guecamburu
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France
| | - V Marques Da Silva
- Inserm U955, FHU SENEC, université Paris-Est Créteil, institut Mondor de recherche biomédicale, équipe GEIC2O, Créteil, France
| | - P Schilfarth
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France; Inserm U1045, centre de recherche cardio-thoracique de Bordeaux, Pessac, France
| | - L Boyer
- Département de physiologie-explorations fonctionnelles, université Paris-Est, hôpital Henri-Mondor, AP-HP, UMR S955, FHU SENEC, UPEC, Créteil, France
| | - C Pilette
- Département de pneumologie, université catholique de Louvain, cliniques universitaires Saint-Luc et institut de recherche expérimentale et clinique, Bruxelles, Belgique
| | - C Martin
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - P Devillier
- Département des maladies respiratoires, unité de recherche en pharmacologie respiratoire, VIM Suresnes (UMR 0892, université Paris-Saclay), hôpital Foch, Suresnes, France
| | - P Berger
- Service d'exploration fonctionnelle respiratoire, département de pharmacologie, centre de recherche cardiothoracique, U1045, CIC 1401, Pessac, France
| | - M Zysman
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France; Inserm U1045, centre de recherche cardio-thoracique de Bordeaux, Pessac, France
| | - O Le Rouzic
- Inserm, CIIL Center for infection and immunity of Lille, université de Lille, CHU de Lille, pneumologie et immuno-allergologie, Institut Pasteur de Lille, U1019 - UMR9017, Lille, France
| | - J Gonzalez-Bermejo
- Inserm, UMRS115 neurophysiologie respiratoire expérimentale et clinique, service de pneumologie, médecine intensive et réanimation (département R3S), Sorbonne université, groupe hospitalier universitaire AP-HP, Sorbonne Université, site Pitié-Salpêtrière, Paris, France
| | - B Degano
- Inserm 1042, service de pneumologie physiologie, CHU de Grenoble, Grenoble, France
| | - P-R Burgel
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - E Ahmed
- Département des maladies respiratoires, IRMB, université de Montpellier, CHU de Montpellier, Montpellier, France
| | - N Roche
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - G Deslee
- Inserm UMRS-1250, service de pneumologie, université Reims Champagne Ardenne, hôpital Maison Blanche, Reims, France.
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Kim P, Olymbios M, Siu A, Pinzon O, Adler E, Liang N, Swenerton R, Sternberg J, Kaur N, Ahmed E, Butskova A, Barnes D, Fehringer G, Demko Z, Billings P, Stehlik J. Absolute Quantification of Donor Derived Cell Free DNA in Heart Transplant Patients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.270] [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] Open
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Samarasekara N, Dinsdale E, Taylor S, Sulaiman M, Gittens A, Ahmed E, Jain A, Tang M, Ninan S. 715 REDUCING OVERTREATMENT OF TYPE 2 DIABETES IN OLDER PEOPLE LIVING IN CARE HOMES. Age Ageing 2022. [DOI: 10.1093/ageing/afac034.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Older people in care homes living with frailty are less likely to benefit from tight glycaemic control in the management of type 2 diabetes with increased risk of adverse effects for example hypoglycaemia, falls and hospital admission. We wished to ascertain the scale of the problem and reduce overtreatment. We defined overtreatment based on American Diabetes Association guidelines as being on an agent that can cause hypoglycaemia and having an HBA1C of ≤53 mmol/mol or, an HbA1c 53–64 mmol/mol with either three or more co-morbidities.
Methods
In 2016, we audited the management of type 2 diabetes in older people discharged from LTHT to care homes. We discussed our concerns with diabetes and geriatric medicine colleagues across medical, nursing and pharmacy disciplines. We engaged the support of the citywide diabetes network which comprises secondary care colleagues, general practitioners and pharmacists. We presented the findings of our initial audit to colleagues within primary and secondary care through departmental meetings and citywide network meetings. We wrote a new guideline, specifically for frail older people that was disseminated citywide through these networks. We re-audited in 2020.
Results
In total, 113 cases were reviewed in 2016 and 105 cases in 2020. In 2020, only 6% (6 patients) were overtreated compared to 38% (43 patients) in 2016.
Conclusions
There has been a marked reduction in overtreatment which should result in less adverse events. We believe the reasons for success lie in wide engagement of relevant stakeholder groups around an issue that is important, large in scale and meaningful to both patient and clinician. There are potential cost savings from reducing medications and reducing harm.
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Affiliation(s)
| | | | - S Taylor
- Leeds Teaching Hospitals Trust (LTHT)
| | | | - A Gittens
- Leeds Teaching Hospitals Trust (LTHT)
| | - E Ahmed
- Leeds Teaching Hospitals Trust (LTHT)
| | - A Jain
- Leeds Teaching Hospitals Trust (LTHT)
| | - M Tang
- Leeds Teaching Hospitals Trust (LTHT)
| | - S Ninan
- Leeds Teaching Hospitals Trust (LTHT)
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Nasri A, Foisset F, Ahmed E, Vachier I, Assou S, Bourdin A, De Vos J. Studying the role of mesenchymal compartment during human iPSC differentiation into bronchial epithelium. Rev Mal Respir 2022. [DOI: 10.1016/j.rmr.2022.02.016] [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: 11/26/2022]
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Lahmar M, Ahmed E, Vachier I, Fort A, Marin G, Molinari N, Bergougnoux A, Bourdin A. Hedgehog Interacting Protein (HHIP) polymorphisms involved in early chronic obstructive pulmonary disease (COPD). Rev Mal Respir 2022. [DOI: 10.1016/j.rmr.2022.02.017] [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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15
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Ahmed E, Aboelkhair A, M. Abdelghany A. Structural and optical characteristics of poly(vinyl alcohol)/carboxymethyl cellulose/ curcumin nanocomposites. B CHEM SOC ETHIOPIA 2022. [DOI: 10.4314/bcse.v35i3.12] [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] [Indexed: 11/17/2022] Open
Abstract
ABSTRACT. Curcumin nanoparticles (CurNP’s) were successfully synthesized, characterized, and used as a cross-linking dopant of polyvinyl alcohol/ sodium carboxymethyl cellulose (PVA/CMC) semi-natural polymer blend. Synthesized nanocomposite films of (PVA/CMC/CurNP’s) were characterized using Fourier transforms infrared FTIR spectroscopy and tested for their resistance of different bacterial grams. Obtained data shows that studied PVA polymerized and cross-linked with CMC as a result for hydrogen bonding between the carboxylic groups and with the non-substituted hydroxyl groups of the cellulose molecule. The optical energy gap was found to be sensitive for the CurNP’s doping level, and the indirect transition was dominant in the studied samples. The addition of CurNP’s appears to increase the activity index of all samples against both gram-negative and positive bacteria, and their activity increases with increasing dopant level until a specific optimal concentration.
KEY WORDS: Curcumin nanoparticles, Semi-natural polymer blend, Antibacterial, FTIR, Optical energy gap
Bull. Chem. Soc. Ethiop. 2021, 35(3), 615-624.
DOI: https://dx.doi.org/10.4314/bcse.v35i3.12
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Abstract
Fats and oils are an essential part of everyday cooking as well as food products
development and their purity are a concern since very early in human history. Adulteration
of fats and oils is increased day by day throughout the world, a greater extent. Hence an
attempt has been taken to review to identify different suitable rapid detection techniques
for ensuring food quality and safety. The study was designed on the basis of extensive
literature review for collecting relevant scientific evidence from various sources like
Google Scholar, PubMed/Medline database, Science direct database, published journal,
newspaper and periodicals. Various techniques have been utilized to assess the purity of
edible fats and oils but yet they are costly and time-consuming. This study summarized
the rapid detection techniques so that a common person can perform at the level of the
household so as to have a broad picture of the status of adulteration in his food in case of
doubt. Edible fats and oils are reported to be adulterated with other low-price oils. For
example, mustard oil adulterated with argemone oil and butter yellow and ghee
adulterated with vanaspati ghee. The leading challenges include the lack of market survey,
lack of acceptance in the wholesale and retail market because of suspecting its purity,
community health problem and decrease in consumer confidence.
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Ahmed E, Abo-Ahmed AI, Latifi F. Ultrastructure and histochemistry of the subepithelial glands of the nasal septal island in dromedaries with special reference to the possible functions. Saudi J Biol Sci 2021; 28:5325-5331. [PMID: 34466111 PMCID: PMC8381000 DOI: 10.1016/j.sjbs.2021.05.055] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 11/26/2022] Open
Abstract
The NSI subepithelial glands in dromedaries had unique anatomical features. Their ultrastructural features are typical for APUD cells. They may have the structures required for synthesis of active peptides, amines and chemical mediators.
The nasal septal island (NSI) is a sensory patch of neuroepithelium located within the soft tissue of the nasal septum in dromedaries. The island has unique anatomical features, including the specialized subepithelial glands. The aim of the present study was to describe the microscopic features and ultrastructure of these subepithelial glands and to speculate the possible functions. A total of 10 camel heads were used for the study. Unlike the serous and mucous airway glands, the NSI glands’ ultrastructural features were typical for cells of the (Amine Precursor Uptake and Decarboxylation, APUD) system. These features were included, membrane bound secretory vesicles of varying electron density, smooth endoplasmic reticulum in the form of vesicles; electron dense mitochondria, abundant rough endoplasmic reticulum and free ribosomes. Alcian-PAS identifiable mucus granules were not observed, except for few clusters of cells, located at the luminal surface. The probable functions were discussed on basis of cellular morphology and context. In a conclusion, the NSI subepithelial glands in dromedaries had unique anatomical structures, and as many other APUD cells, they had the machinery required for synthesis of a variable number of biologically active peptides, amines and chemical mediators.
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Affiliation(s)
- E Ahmed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Benha University, Egypt
| | - Ahmed I Abo-Ahmed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Benha University, Egypt
| | - Fatgzim Latifi
- Department of veterinary medicine, Faculty of Agriculture and Veterinary, University of Prishtina "Hasan Prishtina", Bul. "Bill Clinton", p.n, 10000 Prishtina, Kosovo
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Ali H, Hyder S, Pervez M, Sami W, Ahmed E, Naresh K, Hussain T, Ali A. Shoulder Function Assessment After Head And Neck Reconstruction With Pedicled Supraclavicular Flap. Ann Burns Fire Disasters 2021; 34:180-186. [PMID: 34584508 PMCID: PMC8396156] [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: 08/27/2020] [Accepted: 10/14/2020] [Indexed: 06/13/2023]
Abstract
The supraclavicular artery flap is used for reconstruction of defects of the head and neck. One of the major implications of this procedure is injury to the nerve roots of C3 and C4 of the superficial cervical plexus, which provides sensation over the clavicle, shoulder and proximal chest, thereby causing problems in overall shoulder function. The objective of this study was to assess shoulder function, range of motion, pain, daily activities and overall satisfaction of the patient after using this flap. This study was conducted at the Department of Plastic & Reconstructive Surgery, Dow University of Health Sciences & Dr. Ruth KM Pfau Civil Hospital Karachi, Pakistan, from May 2015 to November 2018. Supraclavicular flap was used in 35 patients who underwent soft tissue reconstruction of defect of the neck after release of post burn contracture. Penn Shoulder Score and Constant Murley Score were used as assessment tools. Assessment by Penn Shoulder Score resulted in 25 (71.4%) patients within the upper quartile and 10 (18.6%) patients within the lower quartile. Constant Murley Score showed 19 (54.2%) of patients had 161°-180° shoulder abduction and lateral elevation. Forward flexion of 161°-180° was seen in 17 (48.5%) patients, 17 (48.5%) had internal rotation till the inter scapular region, 15 (42.8%) had no impairment of external rotation, 19 (54.2%) patients had no impairment of work/recreation, 25 (71.4%) had felt no change in their sleep and 22 (62.8%) were able to position their arm above their head. Overall parameters indicate better function, good range of motion, less pain, resumption of daily activities, and overall satisfaction.
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Affiliation(s)
- H. Ali
- Dow University of Health Sciences & Dr. Ruth KM Pfau Civil Hospital Karachi, Pakistan
| | - S. Hyder
- Dr. Ruth KM Pfau Civil Hospital Karachi, Pakistan
| | - M. Pervez
- Dow University of Health Sciences & Dr. Ruth KM Pfau Civil Hospital Karachi, Pakistan
| | - W. Sami
- Dow University of Health Sciences & Dr. Ruth KM Pfau Civil Hospital Karachi, Pakistan
| | - E. Ahmed
- Dow University Hospital Karachi, Pakistan
| | - K. Naresh
- Civil Hospital, Mirpurkhas, Pakistan
| | | | - A. Ali
- Mayo Clinic, Minnesota, USA
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Ahmed EA, Abd-Eldayem AM, Ahmed E. Can granulocyte colony stimulating factor (G-CSF) ameliorate acetaminophen-induced hepatotoxicity? Hum Exp Toxicol 2021; 40:1755-1766. [PMID: 33882750 DOI: 10.1177/09603271211008522] [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] [Indexed: 11/17/2022]
Abstract
Acetaminophen (APAP) is often used as an antipyretic and analgesic agent. Overdose hepatotoxicity, which often results in liver cell failure and liver transplantation, is a severe complication of APAP usage. To save the liver and save lives from acute liver damage caused by APAP, the search for new strategies for liver defense is important. Wistar rats have been used for the induction of APAP hepatotoxicity. Elevated levels of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) were evaluated for liver toxicity. In addition, the levels of hepatic tissue oxidative markers such as malondialdehyde (MDA), nitric oxide (NO) increased while glutathione (GSH) was depleted and catalase (CAT) activity was curtailed. The biochemical findings were consistent with the changes in histology that suggested liver damage and inflammation. Treated rats with N-acetylcysteine (N-AC) and granulocyte colony stimulating factor (G-CSF) showed a decrease in serum levels of ALT, AST and LDH, while the level of ALP in the G-CSF group was still high. After administration of APAP, treatment with N-AC or G-CSF substantially reduced the level of MDA and NO while maintaining the GSH content and CAT activity. Treatment with N-AC and G-CSF after administration of APAP has also attenuated inflammation and hepatocytes necrosis. The results of this study showed that G-CSF could be viewed as an alternative hepatoprotective agent against APAP-induced acute liver injury compared to N-AC.
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Affiliation(s)
- E A Ahmed
- Department of Pharmacology, Faculty of Medicine, 68796Assiut University, Assiut, Egypt.,Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, Saudi Arabia
| | - A M Abd-Eldayem
- Department of Pharmacology, Faculty of Medicine, 68796Assiut University, Assiut, Egypt.,Al-Ghad International Colleges of Applied Medical Sciences, ABHA / Male, Saudi Arabia
| | - E Ahmed
- Department of Pathology and Clinical Pathology, Faculty of Veterinary Medicine, 68796Assiut University, Assiut, Egypt
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Mohamed M, Aly M, Ahmed E, Abd El-Latif S. IN VITRO SELECTION AND CHARACTERIZATION OF SALVIA OFFICINALIS SALT-TOLERANT CLONES. Scient J of Flowers and Ornament Plants 2021; 8:123-134. [DOI: 10.21608/sjfop.2021.156530] [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: 09/02/2023]
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Benedetti M, Sighinolfi M, Calcagnile T, Saraceni G, Mofferdin A, Ferrari N, Puliatti S, Amato M, Bozzini G, Ahmed Z, Ahmed E, Ahmed E, De Nunzio C, Nacchia A, Fedelini P, Chiancone F, Ferretti S, Curti P, Bianchi G, Rocco B, Micali S. ESWL in the 21th century: Results from a multi-institutional international study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)35408-2] [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] Open
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Affiliation(s)
- I. Dubdub
- Department of Chemical Engineering, King Faisal University, Al-Ahsa, Saudi Arabia
| | - S. Rushd
- Department of Chemical Engineering, King Faisal University, Al-Ahsa, Saudi Arabia
| | - M. Al-Yaari
- Department of Chemical Engineering, King Faisal University, Al-Ahsa, Saudi Arabia
| | - E. Ahmed
- Department of Chemical Engineering, King Faisal University, Al-Ahsa, Saudi Arabia
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De Vos J, Girault N, Mianné J, Bourguignon C, Fieldes M, Nasri A, Ahmed E, Boureux A, Assou S. Non-invasive and rapid test for routine detection of recurrent genetic abnormalities in human pluripotent stem cells. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.007] [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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24
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Hafeez A, Jafry N, ASHRAF S, Ahmed S, Ahmed E, Akhtar F. SAT-345 ACCURACY OF GFR ESTIMATION FORMULAE IN DETERMINATION OF GLOMERULAR FILTRATION RATE IN KIDNEY DONORS: COMPARISON WITH 24 HOURS URINE CREATININE CLEARANCE. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.366] [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: 11/16/2022] Open
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Afroze M, Bhatti S, ASHRAF S, Ahmed S, Ahmed E, Akhtar F. SUN-209 OUTCOME OF PATIENTS DIAGNOSED WITH END STAGE RENAL DISEASE REQUIRING INTENSIVE CARE UNIT. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.743] [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] Open
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26
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Elettreby M, Ahmed E. A simple mathematical model for relapsing-remitting multiple sclerosis (RRMS). Med Hypotheses 2020; 135:109478. [DOI: 10.1016/j.mehy.2019.109478] [Citation(s) in RCA: 2] [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] [Received: 10/21/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 10/25/2022]
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Omar Y, Shahin AM, Ahmed E, Tarabia AMK, El-Saka HAA. On the quaternion projective space. Journal of Taibah University for Science 2020. [DOI: 10.1080/16583655.2020.1840855] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Y. Omar
- Department of Mathematics, Faculty of Science, Damietta University, New Damietta, Egypt
| | - A. M. Shahin
- Department of Mathematics, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - E. Ahmed
- Department of Mathematics, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - A. M. K. Tarabia
- Department of Mathematics, Faculty of Science, Damietta University, New Damietta, Egypt
| | - H. A. A. El-Saka
- Department of Mathematics, Faculty of Science, Damietta University, New Damietta, Egypt
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Alemayehu WA, Neri S, Dalebout S, Nalikungwi R, Trusov A, Ahmed E, Dimba A, Weirich A, Curry PS, Kelly-Cirino CD. Comparative study of OMNIgene®•SPUTUM reagent versus cold-chain for the transportation of sputum samples to GeneXpert®MTB/RIF testing sites in Malawi. BMC Infect Dis 2019; 19:424. [PMID: 31096945 PMCID: PMC6521431 DOI: 10.1186/s12879-019-4070-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/07/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The study was conducted in a remote sputum sample collection sites and GeneXpert® MTB/RIF testing centers to detect Mycobacterium tuberculosis in Malawi. The main purpose of the study was to evaluate whether sputum samples stored and transported with OMNIgene®•SPUTUM (OM-S) medium perform comparably to the routine cold-chain stored and transported samples for GeneXpert testing to detect Mycobacterium tuberculosis. METHODS Two sputum samples from each of 362 tuberculosis suspects were randomly assigned to the OMNIgene treated (OM-S group) or the standard-of-care group (SOC; transported via cold chain). All specimens were tested at regional GeneXpert testing sites using the expectorated (raw) sputum protocol. Demographic, clinical, transport/storage and Xpert data were recorded for each specimen pair. Agreement between the SOC and OM-S groups' Xpert results was evaluated using Cohen's kappa analysis. RESULTS Mean patient age was 42.3 years (range 2-79 years), 77% of patients were female, and 80% were HIV-positive. Mean transport/storage time was 6.7 days (range, 0-29 days). The rates of MTB positivity for the OM-S and SOC groups were comparable (11.8 and 11.2%, respectively), inter-test agreement was "very good" (κ = 0.97), and overall percent agreement was 99%. Two specimen pairs (both mucoid, one 13 days transport, one 1 day transport) had discordant Xpert results. CONCLUSION OM-S-treated sputum specimens can undergo multi-day ambient-temperature storage as well as transport and yield Xpert results comparable to those of cold-chain-transported samples in Malawi.
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Affiliation(s)
| | - S Neri
- Project HOPE, United States and Africa, PO Box 13395, Addis Ababa, Ethiopia
| | - S Dalebout
- Project HOPE, United States and Africa, PO Box 13395, Addis Ababa, Ethiopia
| | - R Nalikungwi
- Project HOPE, United States and Africa, PO Box 13395, Addis Ababa, Ethiopia
| | - A Trusov
- Project HOPE, United States and Africa, PO Box 13395, Addis Ababa, Ethiopia
| | - E Ahmed
- Project HOPE, United States and Africa, PO Box 13395, Addis Ababa, Ethiopia
| | - A Dimba
- Ministry of Health, National TB Program, Lilongwe, Malawi
| | - A Weirich
- DNA Genotek, Ottawa, Ontario, Canada
| | - P S Curry
- DNA Genotek, Ottawa, Ontario, Canada
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Bhojwani A, Flint H, Hall B, Wong H, Innes H, Cliff J, Ahmed E, Malik Z, O'Hagan J, Tolan S, Hall A, Hyatt K, Errington D, Alam F, Robson P, Thorp N, O'Reilly S, Law A, Cicconi S, Jackson R, Palmieri C. Abstract P6-18-32: Profiling the early haematological dynamics and treatment modifications with palbociclib when used as first line treatment for ER-positive, HER2-negative metastatic breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-18-32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Palbociclib plus endocrine therapy (ET) significantly increases progression free survival compared to ET alone. Within PALOMA2 neutropenia was the most common AE and reason for dose reductions. No real data exists regarding dose reductions (DRs), dose interruptions (DIs), toxicities and benefits of palbociclib. Objective: To describe the early haematological dynamics, DRs/DIs with 1st line palbociclib in the context of a routine UK clinical practice. Methods: A prospective record was maintained of all patients with ER-positive, HER2-negative metastatic BC registered on the Pfizer patient programme at the Clatterbridge Cancer Centre NHS Foundation Trust. The clinical records of all patients commenced on treatment between April and December 2017 were reviewed, and clinico-pathological information, haematological data & toxicity data recorded. Data lock was 31st March 2018. Results: 48 patients received at least one cycle of treatment. The median age was 58, 29% (14/48) premenopausal & 71% (34/48) postmenopausal. 43% (21/48) had bone only disease with 42% (20/48) having visceral disease. The median number of cycles delivered 8 (range 2-11). DRs: 18/48 (38%) patients had a total of 21 DRs; 14/18 (78%) had 1 DR to 100mg; 1/18 (5%) 1 DR to 75mg; & 3/18 (17%) 2 DRs to 75mg. Reasons for DRs: 13 neutropenia, 2 leukopenia, 1 thrombocytopenia, 2 fatigue, 1 poor appetite, 1 sore mouth & 1 non-specially unwell. DIs: occurred in 24/48 patients (50%). Details of DRs/DIs by cycle will be presented. 85% (41 of 48) patients remain on treatment with 59% (24/41) on 125mg; 34% (14/41) on 100mg & 7% (3/41) on 75mg. FBC were available for 41/48 (85%) cases & dynamics considered over the first 6 cycles using FBC at the time of planned treatment delivery. Hb Baseline all patients (AP):129 (121 – 138), patients; patients with no dose reductions (NDR) 127 (123 – 139) & patient dose reduction (DR): 130 (118 – 136). Hb changes to cycles 2, 4 and 6 AP: 122 (115 – 131), 121 (116 – 127) and 125 (116 – 134); NDR:122 (110 - 135), 125 (117 - 127) and 131 (116 – 135); DR: 115 (112 - 120), 120 (115 - 124) and 122 (115 – 129). WCC Baseline AP: 6.8 (5.6 – 7.7); NDR: 7.2 (6.3 – 7.7); DR: 6.7 (5.2 – 7.7). WCC changes to cycles 2, 4 and 6 AP: 3.7 (2.9 – 4.4), 3.7 (3.1 – 4.4) and 3.3 (3 – 3.9); NDR: 3.5 (2.9 – 4.1), 3.6 (3.2 – 4.3) and 3.6 (3.1 – 4.1); DR: 2.1 (1.7 – 2.5), 4.3 (3 – 4.6) and 3.3 (2.8 – 3.5). ANC Baseline AP: 4.0 (3.2 – 5.1); NDR: 4.4 (3.4 – 5.0); DR: 3.6 (2.9 – 5.2). ANC changes to cycles 2, 4 and 6 AP: 1.5 (1.2 – 2.1), 1.7 (1.3 – 2.0) and 1.4 (1.2 – 1.9) NDR: 1.5 (1.1 – 2.1), 1.7 (1.4 – 2.0) and 1.3 (1.2 – 2.0); DR: 0.8 (0.6 – 0.8), 1.7 (1.2 – 2.3) and 1.4 (1.3 – 1.6). Plts Baseline AP: 298 (226 – 339), NDR: 252 (211 – 336); DR: 299 (253 – 339). Plt changes to cycles 2, 4 and 6 AP: 252 (198 – 310), 221 (186 – 259) and 200 (169 – 243). NDR: 249 (185 – 334), 229 (171 – 267) and 205 (177 – 263);DR: 208 (199 – 210), 216 (199 – 243) and 194 (162 -210). Conclusion: These initial real world data are consistent with the PALOMA2 data. Baseline WCC & ANC show no significant difference between NDR and DR cases. Updated data will be presented as well as outcome data for first time.
Citation Format: Bhojwani A, Flint H, Hall B, Wong H, Innes H, Cliff J, Ahmed E, Malik Z, O'Hagan J, Tolan S, Hall A, Hyatt K, Errington D, Alam F, Robson P, Thorp N, O'Reilly S, Law A, Cicconi S, Jackson R, Palmieri C. Profiling the early haematological dynamics and treatment modifications with palbociclib when used as first line treatment for ER-positive, HER2-negative metastatic breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-18-32.
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Affiliation(s)
- A Bhojwani
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - H Flint
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - B Hall
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - H Wong
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - H Innes
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - J Cliff
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - E Ahmed
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - Z Malik
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - J O'Hagan
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - S Tolan
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - A Hall
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - K Hyatt
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - D Errington
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - F Alam
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - P Robson
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - N Thorp
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - S O'Reilly
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - A Law
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - S Cicconi
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - R Jackson
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - C Palmieri
- Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, Merseyside, Switzerland; University of Liverpool, Liverpool, Merseyside, United Kingdom
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Hall B, Bhojwani A, Innes H, Ahmed E, Cliff J, Malik Z, O'Hagan J, Tolan S, Hall A, Hayat K, Errington D, Alam F, Thorp N, Flint H, Law A, Wong H, O'Reilly S, Jackson R, Cicconi S, Palmieri C. Abstract P6-17-27: Real world experience of the medical and surgical management of HER2 positive early breast cancer treated with neoadjuvant trastuzumab and pertuzumab via the NHS England cancer drug fund. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-17-27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Studies of neoadjuvant (NA) dual HER2 blockade with trastuzumab (T) and pertuzumab (P) in combination with chemotherapy (CT) for early breast cancer (BC) have reported pathological complete response (pCR) rates of 39 to 62%. These studies also report manageable toxicity with diarrhoea reported in up to 73% of cases. To date no real-world studies have explored the efficacy and toxicity of this treatment. The objective of this study was to describe the medical and surgical management of women treated with neoadjuvant T-P in combination with CT (NAT-P-CT). As well as to determine the efficacy toxicity of NAT-P-CT in the context of a routine UK NHS clinical practice.
Methods: Patients with HER2+ BC treated neoadjuvantly with T-P accessed via the NHS England Cancer Drug Fund (CDF) at the Clatterbridge Cancer Centre NHS Foundation Trust between October 2016 and January 2018 were retrospectively identified. Clinico-pathological information, treatment data, nurse led toxicity review and echocardiographic were reviewed. Data lock was 19th June 2018.
Results: 78 female patients were identified with a median age of 50 years (IQR: 44.4-60.2). At diagnosis: median tumour size 30mm (23.0-47.5mm), 62% (48/78) were LN positive & 56% (44/78) ER+. CT regimens: 81% (63/78) FEC-DHP of these 30% (19/63) switched to weekly paclitaxel (wP). or nab-paclitaxel; 5% (4/78); AC/EC-DHP; 9% (8/78) TCHP with 13% (1/8) switched to wP. At time of analysis, 88% (69/78) had undergone definitive surgery. Surgical details: Breast: 52% (36/69) mastectomy & 48% (33/69) WLE, Axillary management: 51% (35/69) axillary dissection (Ax Dx) & 49% (34/69) sentinel node biopsy (4 performed prior to NA treatment). 91% (32/35) of those undergoing Ax Dx were LN+ at presentation, of these 59% (19/32) had no evidence of axillary involvement at surgery. pCR rate (ypT0/is, N0) was 46% (32/69) [pCR by HR: ER+ 43% (21/49) & ER- 55% (11/20]. pCR for 20 patients switched to wP was 60% (12/20). 7% (5/69) achieved pCR in the breast alone (in these LN status ITCx1, micrometsx3 & macrometsx1). Of the 54% (37/69) with residual breast tumour median size was 13mm (1-22mm). Toxicity Data: Ejection fraction (EF) did not decline beyond 10% of baseline in any patients. Diarrhoea (any grade) occurred in 74% of cases, and CTCAE grade 3-4 toxicity occurring in >2% of patients: diarrhoea, fatigue, and infection. Updated analysis regarding pCR rate and toxicity, as well as initial outcome data will be presented.
Conclusion: These results (1) confirm the efficacy of NA T-P in a real world population; (2) support the use of NA wP; (3) indicate significant proportion of patients axilla are downstaged & (4) reveal diarrhoea rates in keeping with the literature. Currently, NHS England rules do not allow wP to be used routinely in NA setting with T-P this should be reviewed in light of these data and those of the BERENICE study. Measures to identify patients who can avoid axillary dissection as well as to mitigate diarrhoea should be considered.
Citation Format: Hall B, Bhojwani A, Innes H, Ahmed E, Cliff J, Malik Z, O'Hagan J, Tolan S, Hall A, Hayat K, Errington D, Alam F, Thorp N, Flint H, Law A, Wong H, O'Reilly S, Jackson R, Cicconi S, Palmieri C. Real world experience of the medical and surgical management of HER2 positive early breast cancer treated with neoadjuvant trastuzumab and pertuzumab via the NHS England cancer drug fund [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-17-27.
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Affiliation(s)
- B Hall
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - A Bhojwani
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - H Innes
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - E Ahmed
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - J Cliff
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - Z Malik
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - J O'Hagan
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - S Tolan
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - A Hall
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - K Hayat
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - D Errington
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - F Alam
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - N Thorp
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - H Flint
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - A Law
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - H Wong
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - S O'Reilly
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - R Jackson
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - S Cicconi
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - C Palmieri
- University of Liverpool, Liverpool, Hammersmith and Fulham, United Kingdom; Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
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Bashir T, Shakoor A, Ahmed E, Niaz NA, Iqbal S, Akhtar MS, Malik MA. Magnetic, Electrical and Thermal Studies of Polypyrrole-Fe2O3 Nanocomposites. Polym Sci Ser A 2017. [DOI: 10.1134/s0965545x17060013] [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: 11/23/2022]
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Ismail M, Ahmed E, Rana AM, Hussain F, Talib I, Nadeem MY, Panda D, Shah NA. Improved Endurance and Resistive Switching Stability in Ceria Thin Films Due to Charge Transfer Ability of Al Dopant. ACS Appl Mater Interfaces 2016; 8:6127-6136. [PMID: 26881895 DOI: 10.1021/acsami.5b11682] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An improvement in resistive switching (RS) characteristics of CeO2-based devices has been reported by charge transfer through Al metal as a dopant. Moreover, density functional theory (DFT) calculations have been performed to investigate the role of Al-layer sandwiched between CeO2 layers by the Vienna ab initio simulation package (VASP). Total density of states (TDOS) and partial electron density of states (PDOS) have been calculated and analyzed with respect to resistive switching. It is established that the oxygen vacancy based conductive filaments are formed and ruptured in the upper region of CeO2 layer, because of the fact that maximum transport of charge takes place in this region by Al and Ti (top electrode), while the lower region revealed less capability to generate conductive filaments because minimum charge transfer takes place in this region by Al and/or Pt (bottom electrode). The effect of Al and Al2O3 on both the electronic charge transfer from valence to conduction bands and the formation stability of oxygen vacancies in conductive filament have been discussed in detail. Experimental results demonstrated that the Ti/CeO2:Al/Pt sandwich structure exhibits significantly better switching characteristics including lower forming voltage, improved and stable SET/RESET voltages, enhanced endurance of more than 10(4) repetitive switching cycles and large memory window (ROFF/RON > 10(2)) as compared to undoped Ti/CeOx/Pt device. This improvement in memory switching behavior has been attributed to a significant decrease in the formation energy of oxygen vacancies and to the enhanced oxygen vacancies generation within the CeO2 layers owing to charge transferring and oxygen gettering ability of Al-dopant.
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Affiliation(s)
- M Ismail
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - E Ahmed
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - A M Rana
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - F Hussain
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - I Talib
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - M Y Nadeem
- Department of Physics, Bahauddin Zakariya University , Multan 60800, Pakistan
| | - D Panda
- Department of Electronics Engineering, National Institute of Science and Technology , Berhampur, Orrisa India
| | - N A Shah
- Thin films Technology Research Laboratory, Department of Physics, COMSATS Institute of Information Technology , Islamabad 45320, Pakistan
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Lohiniva AL, Bassim H, Hafez S, Kamel E, Ahmed E, Saeed T, Talaat M. Determinants of hand hygiene compliance in Egypt: building blocks for a communication strategy. East Mediterr Health J 2015; 21:665-70. [PMID: 26450863 DOI: 10.26719/2015.21.9.665] [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: 05/24/2011] [Accepted: 05/02/2012] [Indexed: 11/09/2022]
Abstract
Hand hygiene of health-care staff is one of the most important interventions in reducing transmission of nosocomial infections. This qualitative study aimed to understand the behavioural determinants of hand hygiene in order to develop sustainable interventions to promote hand hygiene in hospitals. Fourteen focus group discussions were conducted with nurses in 2 university hospitals in Egypt. The interviews were tape recorded and transcribed. Thematic analysis was conducted by 2 independent investigators. The findings highlighted that nurses did not perceive the benefits of hand hygiene, and that they linked the need to wash hands to a sense of dirtiness. Knowledge of hand hygiene and related products was limited and preference for water and soap was obvious. Environmental constraints, lack of role models and social control were identified as barriers for compliance with hand hygiene. A multi-faceted hand hygiene strategy was developed based on existing cultural concepts valued by the hospital staff.
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Affiliation(s)
- A-L Lohiniva
- United States Naval Medical Research Unit No. 3, Cairo, Egypt
| | - H Bassim
- Department of Microbiology and Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - S Hafez
- Alexandria University Hospitals, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - E Kamel
- Department of Microbiology and Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - E Ahmed
- Alexandria University Hospitals, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - T Saeed
- United States Naval Medical Research Unit No. 3, Cairo, Egypt
| | - M Talaat
- United States Naval Medical Research Unit No. 3, Cairo, Egypt
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Ahmad M, Ahmed E, Zafar F, Khalid N, Niaz N, Hafeez A, Ikram M, Khan MA, HONG Z. Enhanced photocatalytic activity of Ce-doped ZnO nanopowders synthesized by combustion method. J RARE EARTH 2015. [DOI: 10.1016/s1002-0721(14)60412-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [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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Mian SA, Yang LM, Saha LC, Ahmed E, Ajmal M, Ganz E. A fundamental understanding of catechol and water adsorption on a hydrophilic silica surface: exploring the underwater adhesion mechanism of mussels on an atomic scale. Langmuir 2014; 30:6906-14. [PMID: 24835420 DOI: 10.1021/la500800f] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mussels have a remarkable ability to bond to solid surfaces under water. From a microscopic perspective, the first step of this process is the adsorption of dopa molecules to the solid surface. In fact, it is the catechol part of the dopa molecule that is interacting with the surface. These molecules are able to make reversible bonds to a wide range of materials, even underwater. Previous experimental and theoretical efforts have produced only a limited understanding of the mechanism and quantitative details of the competitive adsorption of catechol and water on hydrophilic silica surfaces. In this work, we uncover the nature of this competitive absorption by atomic scale modeling of water and catechol adsorbed at the geminal (001) silica surface using density functional theory calculations. We find that catechol molecules displace preadsorbed water molecules and bond directly on the silica surface. Using molecular dynamics simulations, we observe this process in detail. We also calculate the interaction force as a function of distance, and observe a maximum of 0.5 nN of attraction. The catechol has a binding energy of 23 kcal/mol onto the silica surface with adsorbed water molecules.
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Affiliation(s)
- Shabeer Ahmad Mian
- Department of Nanomaterials Engineering, Pusan National University , Miryang, 627-706, Republic of Korea
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Ahmad M, Ahmed E, Hong ZL, Ahmed W, Elhissi A, Khalid NR. Photocatalytic, sonocatalytic and sonophotocatalytic degradation of Rhodamine B using ZnO/CNTs composites photocatalysts. Ultrason Sonochem 2014; 21:761-773. [PMID: 24055646 DOI: 10.1016/j.ultsonch.2013.08.014] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [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: 06/21/2013] [Revised: 08/21/2013] [Accepted: 08/23/2013] [Indexed: 06/02/2023]
Abstract
A series of ZnO nanoparticles decorated on multi-walled carbon nanotubes (ZnO/CNTs composites) was synthesized using a facile sol method. The intrinsic characteristics of as-prepared nanocomposites were studied using a variety of techniques including powder X-ray diffraction (XRD), high resolution transmission electron microscope (HR-TEM), transmission electron microscope (TEM), scanning electron microscope (SEM) with energy dispersive X-ray analysis (EDX), Brunauer Emmett Teller (BET) surface area analyzer and X-ray photoelectron spectroscopy (XPS). Optical properties studied using UV-Vis diffuse reflectance spectroscopy confirmed that the absorbance of ZnO increased in the visible-light region with the incorporation of CNTs. In this study, degradation of Rhodamine B (RhB) as a dye pollutant was investigated in the presence of pristine ZnO nanoparticles and ZnO/CNTs composites using photocatalysis and sonocatalysis systems separately and simultaneously. The adsorption was found to be an essential factor in the degradation of the dye. The linear transform of the Langmuir isotherm curve was further used to determine the characteristic parameters for ZnO and ZCC-5 samples which were: maximum absorbable dye quantity and adsorption equilibrium constant. The natural sunlight and low power ultrasound were used as an irradiation source. The experimental kinetic data followed the pseudo-first order model in photocatalytic, sonocatalytic and sonophotocatalytic processes but the rate constant of sonophotocatalysis is higher than the sum of it at photocatalysis and sonocatalysis process. The sonophotocatalysis was always faster than the respective individual processes due to the more formation of reactive radicals as well as the increase of the active surface area of ZnO/CNTs photocatalyst. Chemical oxygen demand (COD) of textile wastewater was measured at regular intervals to evaluate the mineralization of wastewater.
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Affiliation(s)
- M Ahmad
- Department of Physics, Bahauddin Zakariya University, Multan 60800, Pakistan; State Key Laboratory of Silicon Materials, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, China.
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Ahmed E, Holmström SJM. Siderophores in environmental research: roles and applications. Microb Biotechnol 2014; 7:196-208. [PMID: 24576157 PMCID: PMC3992016 DOI: 10.1111/1751-7915.12117] [Citation(s) in RCA: 412] [Impact Index Per Article: 41.2] [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: 12/18/2013] [Revised: 01/13/2014] [Accepted: 01/21/2014] [Indexed: 12/17/2022] Open
Abstract
Siderophores are organic compounds with low molecular masses that are produced by microorganisms and plants growing under low iron conditions. The primary function of these compounds is to chelate the ferric iron [Fe(III)] from different terrestrial and aquatic habitats and thereby make it available for microbial and plant cells. Siderophores have received much attention in recent years because of their potential roles and applications in various areas of environmental research. Their significance in these applications is because siderophores have the ability to bind a variety of metals in addition to iron, and they have a wide range of chemical structures and specific properties. For instance, siderophores function as biocontrols, biosensors, and bioremediation and chelation agents, in addition to their important role in weathering soil minerals and enhancing plant growth. The aim of this literature review is to outline and discuss the important roles and functions of siderophores in different environmental habitats and emphasize the significant roles that these small organic molecules could play in applied environmental processes.
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Affiliation(s)
- E Ahmed
- Department of Geological Sciences, Stockholm University, Stockholm, Sweden
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Ahmed E, Gehani AA, El-Menyar A, Ali W, Al Binali H, Singh R, Al Suwaidi J. Ethnicity and acute coronary syndrome: insights from a 20-year registry from the Middle East. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3125] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ali A, AlSalhi MS, Atif M, Ansari AA, Israr MQ, Sadaf JR, Ahmed E, Nur O, Willander M. Potentiometric urea biosensor utilizing nanobiocomposite of chitosan-iron oxide magnetic nanoparticles. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/414/1/012024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ahmed E. M011 BASAL FSH, ESTRADIOL, ANTI-MÜLLERIAN HORMONE AND ANTRAL FOLLICLE COUNT IN THE PREDICTION OF POOR OVARIAN RESPONSE TO CONTROLLED OVARIAN HYPERSTIMULATION. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61205-3] [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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Rizvi SAH, Naqvi SAA, Zafar MN, Hussain Z, Hashmi A, Hussain M, Akhtar SF, Ahmed E, Aziz T, Sultan G, Sultan S, Mehdi SH, Lal M, Ali B, Mubarak M, Faiq SM. A renal transplantation model for developing countries. Am J Transplant 2011; 11:2302-7. [PMID: 21883911 DOI: 10.1111/j.1600-6143.2011.03712.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The estimated incidence of end-stage renal disease (ESRD) in Pakistan is 100 per million population. Paucity and high costs of renal replacement therapy allows only 10% to get dialysis and 4-5% transplants. Our center, a government organization, started a dialysis and transplant program in 1980s where all services were provided free of charge to all patients. It was based on the concept of community government partnership funded by both partners. The guiding principles were equity, transparency, accountability and development of all facilities under one roof. This partnership has sustained itself for 30 years with an annual budget of $25 million in 2009. Daily 600 patients are dialyzed and weekly 10-12 receive transplants. One- and 5-year graft survival of 3000 transplants is 92% and 85%, respectively. The institute became a focus of transplantation in Pakistan and played a vital role in the campaign against transplant tourism and in promulgation of transplant law of 2007, and also helped to increase altruistic transplants in the country. This model emphasizes that in developing countries specialized centers in government sector are necessary for transplantation to progress and community support can make it available to the common man.
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Affiliation(s)
- S A H Rizvi
- Department of Urology, Sindh Institute of Urology and Transplantation, Civil Hospital, Karachi, Pakistan.
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Ahmed E, El-Saka HA. On multi-strain model for Hepatitis C. Nonlinear Biomed Phys 2011; 5:6. [PMID: 21813018 PMCID: PMC3726404 DOI: 10.1186/1753-4631-5-6] [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: 06/11/2011] [Accepted: 08/03/2011] [Indexed: 05/31/2023]
Abstract
In this paper we present a multi-strain model for hepatitis C virus (HCV) including an immune response term. The model is presented and discussed. Also we argue that the added multi-strain term represents some basic properties of the immune system and that it should be included to study longer term behavior of the disease.
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Affiliation(s)
- E Ahmed
- Mathematics Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt
| | - HA El-Saka
- Mathematics Department, Damietta Faculty of Science, Mansoura University, 34517, New Damietta, Egypt
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Ejaz M, Ahmed E, Hatcher J, Jafar T. P2-70 Prevalence and associated risk factors of persistent albuminuria among hypertensive urban population of Karachi Pakistan. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976i.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Pan M, Lee ATC, Ahmed E. Development of a Web-based community cancer survivorship program. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e19573] [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: 11/20/2022] Open
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45
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Ahmed E, Abdel-aziem A, Ebid A. Effect of Isokinetic training on Quadriceps Peak Torque in Healthy subjects and patients with burn injury. J Rehabil Med 2011; 43:930-4. [DOI: 10.2340/16501977-0862] [Citation(s) in RCA: 10] [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: 11/16/2022] Open
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Abstract
In this paper we present a fractional order generalization of Perelson et al. basic hepatitis C virus (HCV) model including an immune response term. We argue that fractional order equations are more suitable than integer order ones in modeling complex systems which include biological systems. The model is presented and discussed. Also we argue that the added immune response term represents some basic properties of the immune system and that it should be included to study longer term behavior of the disease.
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Affiliation(s)
- E Ahmed
- Mathematics Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt
| | - H A El-Saka
- Mathematics Department, Faculty of Science, Mansoura University, 34517, New Damietta, Egypt
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Rizvi SAH, Anwar Naqvi SA, Zafar MN, Hussain Z, Hashmi A, Akhtar F, Hussain M, Ahmed E. Pakistan abolishes kidney market and ushers in a new era of ethical transplantation. Int J Organ Transplant Med 2010; 1:193-7. [PMID: 25013586 PMCID: PMC4089237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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48
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Ahmed E, Saied A. ECG finding in Sudanese athletes: A Pilot Study. Sud Jnl Med Sci 2009. [DOI: 10.4314/sjms.v4i3.48322] [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: 11/17/2022] Open
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Hegazi AS, Hashish AH, Ahmed E. On managing complex adaptive systems motivated by biosystems application to infections. Nonlinear Biomed Phys 2009; 3:11. [PMID: 19822007 PMCID: PMC2765945 DOI: 10.1186/1753-4631-3-11] [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: 08/21/2009] [Accepted: 10/12/2009] [Indexed: 05/28/2023]
Abstract
Many attempts to control Complex adaptive systems (CAS) have failed. Here we try to learn from biosystems to derive some principles for CAS management. An application to managing infections is given.
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Affiliation(s)
- AS Hegazi
- Mathematics department, Faculty of Science, Mansoura 35516, Egypt
| | - AH Hashish
- Physics department, Faculty of Science, Mansoura 35516, Egypt
| | - E Ahmed
- Mathematics department, Faculty of Science, Mansoura 35516, Egypt
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El Lahawi M, BenAmer H, Ahmed E, Hayton T, Hashimi I, Husseini A. PO27-TH-07 A paraneoplastic syndrome presenting with Guillain–Barré syndrome. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)71177-3] [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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