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Elamin EM, Eshage SE, Mohmmode SM, Mukhtar RM, Mahjoub M, Sadelin E, Shoaib TH, Edris A, Elshamly EM, Makki AA, Ashour A, Sherif AE, Osman W, Ibrahim SRM, Mohamed GA, Alzain AA. Discovery of dual-target natural antimalarial agents against DHODH and PMT of Plasmodium falciparum: pharmacophore modelling, molecular docking, quantum mechanics, and molecular dynamics simulations. SAR QSAR Environ Res 2023; 34:709-728. [PMID: 37665563 DOI: 10.1080/1062936x.2023.2251876] [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] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 08/18/2023] [Indexed: 09/05/2023]
Abstract
Malaria is a lethal disease that claims thousands of lives worldwide annually. The objective of this study was to identify new natural compounds that can target two P. falciparum enzymes; P. falciparum Dihydroorotate dehydrogenase (PfDHODH) and P. falciparum phosphoethanolamine methyltransferase (PfPMT). To accomplish this, e-pharmacophore modelling and molecular docking were employed against PfDHODH. Following this, 1201 natural compounds with docking scores of ≤ -7 kcal/mol were docked into the active site of the second enzyme PMT. The top nine compounds were subjected to further investigation using MM-GBSA free binding energy calculations and ADME analysis. The results revealed favourable free binding energy values better than the references, as well as acceptable pharmacokinetic properties. Compounds ZINC000013377887, ZINC000015113777, and ZINC000085595753 were scrutinized to assess their interaction stability with the PfDHODH enzyme, and chemical stability reactivity using molecular dynamics (MD) simulation and density functional theory (DFT) calculations. These findings indicate that the three natural compounds are potential candidates for dual PfDHODH and PfPMT inhibitors for malaria treatment.
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Affiliation(s)
- E M Elamin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - S E Eshage
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - S M Mohmmode
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - R M Mukhtar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - M Mahjoub
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - E Sadelin
- Department of Pharmaceutics, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - T H Shoaib
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - A Edris
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - E M Elshamly
- Department of Molecular Biotechnology, Hochschule Anhalt, Köthen, Germany
| | - A A Makki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
| | - A Ashour
- Department of Pharmacognosy, Faculty of Pharmacy, Prince Sattam Bin Abdulaziz University, AlKharj, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Al Mansurah, Egypt
| | - A E Sherif
- Department of Pharmacognosy, Faculty of Pharmacy, Prince Sattam Bin Abdulaziz University, AlKharj, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Al Mansurah, Egypt
| | - W Osman
- Department of Pharmacognosy, Faculty of Pharmacy, Prince Sattam Bin Abdulaziz University, AlKharj, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, University of Khartoum, Khartoum, Sudan
| | - S R M Ibrahim
- Preparatory Year Program, Department of Chemistry, Batterjee Medical College, Jeddah, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - G A Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - A A Alzain
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, Gezira, Sudan
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AboElross MR, Amin EA, Zaky MM, Abdelsalam A, Osman W. Calculation of dose rates in loss of coolant accident due to double ended rupture of the experimental tangential irradiation beam tube of MTR reactor. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109872] [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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El-Mansy M, Ibrahim M, Suvitha A, Abdelsalam H, Osman W. Boosted electronic, optical, and NLO responses of homo P-nanoclusters via conducting polymeric substituents. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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El-Kourghly KM, El-Gammal W, El-Tahawy MS, Abdelati M, Abdelsalam A, Osman W. Application of a hybrid method for efficiency calibration of a NaI detector. Appl Radiat Isot 2021; 171:109632. [PMID: 33636440 DOI: 10.1016/j.apradiso.2021.109632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 12/21/2020] [Accepted: 01/28/2021] [Indexed: 10/22/2022]
Abstract
A previously proposed hybrid analytical-numerical method for efficiency calibration of a NaI detector for a point γ-source is extended and applied for other shapes of sources. The shapes include line, disk, and cylindrical sources of various dimensions and locations with respect to the right circular cylindrical NaI detector. The results obtained by this method have been evaluated through comparison with Monte Carlo (MC) calculations. A relative maximum difference of 3.5% is found between the two methods.
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Affiliation(s)
- K M El-Kourghly
- Nuclear Safeguards and Physical Protection Department, Egyptian Nuclear and Radiological Regulatory Authority (ENRRA), Cairo, Egypt.
| | - W El-Gammal
- Nuclear Safeguards and Physical Protection Department, Egyptian Nuclear and Radiological Regulatory Authority (ENRRA), Cairo, Egypt
| | - M S El-Tahawy
- Nuclear Safeguards and Physical Protection Department, Egyptian Nuclear and Radiological Regulatory Authority (ENRRA), Cairo, Egypt
| | - M Abdelati
- Nuclear Safeguards and Physical Protection Department, Egyptian Nuclear and Radiological Regulatory Authority (ENRRA), Cairo, Egypt
| | - A Abdelsalam
- Physics Department, Faculty of Science, Cairo University, Giza, Egypt
| | - W Osman
- Physics Department, Faculty of Science, Cairo University, Giza, Egypt
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El-Sersy AR, Hassan MA, Mostafa K, Abdelsalam A, Osman W. Prototype Mn-solution bath for low activity primary standard neutron dosimetry. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07405-0] [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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Khalifa MA, Alaya Z, Hassini L, Bouattour K, Osman W, Ben Ayèche ML. Ipsilateral open anterior hip dislocation and avulsion fracture of the greater trochanter: An unusual case report. Arch Pediatr 2019; 26:422-425. [PMID: 31630902 DOI: 10.1016/j.arcped.2019.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 04/08/2019] [Revised: 08/04/2019] [Accepted: 09/20/2019] [Indexed: 10/25/2022]
Abstract
Approximately 3% of all joint dislocations involve the hip joint, and only 8-10% of these will be anterior. Traumatic anterior open dislocation of the hip is rare in children and prone to be associated with injuries, extensive soft tissue damage, and avascular necrosis of the femoral head. We present a case of a 13-year-old boy who had an open anterior dislocation of the hip with ipsilateral avulsion of the greater trochanter after a tractor wheel crush in an agricultural accident. Additional lesions included a diaphyseal closed fracture of the contralateral femur. We report this case because of the rarity and seriousness of this injury due to its progressive complications and difficulties related to its management.
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Affiliation(s)
- M A Khalifa
- Department of Orthopeadics, Sahloul Hospital, Faculty of Medicine of Sousse, Ibn El Jazzar Street, 4000, Sousse, Tunisia
| | - Z Alaya
- Departement of Internal Medicine, Mohamed Taher Maamouri Hospital, 8000 Nabeul, Tunisia.
| | - L Hassini
- Department of Orthopeadics, Sahloul Hospital, Faculty of Medicine of Sousse, Ibn El Jazzar Street, 4000, Sousse, Tunisia
| | - K Bouattour
- Department of Orthopeadics, Sahloul Hospital, Faculty of Medicine of Sousse, Ibn El Jazzar Street, 4000, Sousse, Tunisia
| | - W Osman
- Department of Orthopeadics, Sahloul Hospital, Faculty of Medicine of Sousse, Ibn El Jazzar Street, 4000, Sousse, Tunisia
| | - M L Ben Ayèche
- Department of Orthopeadics, Sahloul Hospital, Faculty of Medicine of Sousse, Ibn El Jazzar Street, 4000, Sousse, Tunisia
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Osman W, Banks L, Lee S, Connelly K, Yan A, Konieczny K, Aves T, Goodman J, Dorian P. DOES PHYSIOLOGIC CARDIAC REMODELING IN ENDURANCE ATHLETES ALTER REPOLARIZATION OR QT DYNAMICS? Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.574] [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] Open
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Konieczny K, Banks L, Osman W, Glibbery M, Connelly KA, Yan AT, Goodman JM, Dorian P. Prolonged P wave duration is associated with right atrial dimensions, but not atrial arrhythmias, in middle-aged endurance athletes. J Electrocardiol 2019; 56:115-120. [PMID: 31394411 DOI: 10.1016/j.jelectrocard.2019.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 06/28/2019] [Accepted: 07/06/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Atrial arrhythmias occur at a higher than expected prevalence amongst endurance athletes. Few studies have examined both atrial structure and arrhythmias in middle-aged endurance athletes. We examined the relationship between P-wave duration, atrial dimensions, and the presence of atrial ectopy in long-standing, middle-aged endurance athletes. METHODS Middle-aged athletes with a minimum of 10 years of competitive endurance sport history and no history of structural heart disease or clinical atrial arrhythmias, had 12-lead ECGs to assess P-wave duration, signal-averaged ECGs (SAECG) to assess filtered P-wave duration, a 24 h Holter monitor to assess atrial ectopy, and echocardiography and cardiac magnetic resonance imaging to assess atrial structural characteristics. RESULTS Amongst endurance athletes (n = 104; mean age = 54 ± 5 years; 63% male), filtered P-wave duration on SAECG was correlated with P-wave duration on 12-lead ECG (r = 0.36, p, 0.0001), as well as with larger CMR-derived RA areas (r = 0.30, p = 0.01) and volumes (r = 0.24, p < 0.05). There was no correlation between filtered P-wave duration and any LA measures on imaging (p > 0.05). There was no correlation between the incidence of atrial ectopy (premature atrial contractions or atrial tachycardia) and any electrocardiographic or structural measures. CONCLUSION Longer filtered P-wave duration was associated with larger RA areas and volumes, without an increase in atrial ectopy.
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Affiliation(s)
- K Konieczny
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - L Banks
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada
| | - W Osman
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - M Glibbery
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada
| | - K A Connelly
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - A T Yan
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - J M Goodman
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada; Division of Cardiology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - P Dorian
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.
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Senthilkumaran S, Meenakshisundaram R, Osman W, Thirumalaikolundusubramanian P. Acute Myocardial Infarction During Pregnancy and the Puerperium: Experiences and Challenges From Southern India. Mayo Clin Proc 2019; 94:918-919. [PMID: 31054613 DOI: 10.1016/j.mayocp.2019.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 10/26/2022]
Affiliation(s)
| | | | - Wedatallah Osman
- Epsom and St Helier University Hospitals, NHS Trust, Carshalton, Surrey, UK
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Osman W, Shabli S, Khan S, Watson N, Day C, Giridharan S, Pittius D, Haris M. 14: Superior vena cava obstruction (SVCO) syndrome caused by a ball like endovascular metastatic small cell lung cancer mass: A case report. Lung Cancer 2017. [DOI: 10.1016/s0169-5002(17)30064-8] [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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Fawzi A, Maddekar N, Khan S, Bikmalla S, Osman W, Maqsood U, Haris M. S95 Ambulatory management of pneumothorax: is there a need for a dedicated pleural team-led service? Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
Introduction: Elbow dislocations are uncommon in children. The treatment and outcomes remains controversial. Materials and methods: We report retrospectively the clinical and functional results of elbow dislocations in children treated in Sahloul University Hospital. Both isolated or pure dislocations and those associated with other injuries were evaluated separately. Results: Forty-eight children were selected based on inclusion criteria. All were unilateral injuries. Pure dislocations were observed in 19 cases, out of which according to the Robert’s criteria, 13 children (68%) had excellent, three (15%) good, two (10%) fair, and one (7%)poor outcome. Out of the 29 elbow dislocations associated with other injuries, 3 (10%) had excellent, 4 (13%) good, 8 (27%) fair and 14 (50%) poor result. Reviewing the functional results, better range of motion was found in elbows with pure dislocation compared to those with associated injuries. Conclusion: Prolonged follow-up and effective rehabilitation programs are required for good outcomes.
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Affiliation(s)
- H Kaziz
- Sahloul Sousse University Hospital, Sahloul Sousse, Tunisia
| | - N Naouar
- Sahloul Sousse University Hospital, Sahloul Sousse, Tunisia
| | - W Osman
- Sahloul Sousse University Hospital, Sahloul Sousse, Tunisia
| | - Mlb Ayeche
- Sahloul Sousse University Hospital, Sahloul Sousse, Tunisia
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Estes C, Abdel‐Kareem M, Abdel‐Razek W, Abdel‐Sameea E, Abuzeid M, Gomaa A, Osman W, Razavi H, Zaghla H, Waked I. Economic burden of hepatitis C in Egypt: the future impact of highly effective therapies. Aliment Pharmacol Ther 2015; 42. [PMID: 26202593 PMCID: PMC5034818 DOI: 10.1111/apt.13316] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The prevalence of hepatitis C virus (HCV) infection in Egypt is the highest in the world, yet the total economic burden has not been quantified. Improved understanding of costs and the impact of treatment strategies will provide for better allocation of resources to reduce HCV disease and economic burden. AIM A modelling approach was used to quantify the current HCV-infected population, future disease progression and associated costs in Egypt. METHODS Direct healthcare costs were calculated from a nationally representative hospital and a disability adjusted life year (DALY) template was used with monetary value assigned to lost life years. Three scenarios were considered: (i) Historical treatment scenario: 50% SVR; 65,000 treated annually, (ii) Current treatment scenario: 90% sustained virologic response (SVR); 65,000 treated annually, (iii) Increased treatment scenario: 90% SVR; 325,000 treated annually by 2018. RESULTS Cumulative DALYs (2015-2030) under Scenario 1 were estimated at 7.88 million and cumulative costs estimated at $89.07 billion. Annual DALYs increased 16% during 2015-2030 while annual costs more than doubled. Scenario 2 reduced cumulative DALYs and costs by 7% and 4%, respectively. Under Scenario 3, total costs declined 73% to $1047 million during 2015-2030. As compared to Scenario 1, cumulative DALYs and costs decreased 37% and 35%, respectively. CONCLUSIONS This is the first estimate of the total economic burden of HCV in Egypt. Extraordinary measures are necessary to substantially reduce HCV disease and cost burden. With newer therapies, strategies to reduce disease burden are feasible and cost-effective.
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Affiliation(s)
- C. Estes
- Center for Disease Analysis (CDA)LouisvilleCOUSA
| | | | | | | | - M. Abuzeid
- National Liver Institute (NLI)MenoufiyaEgypt
| | - A. Gomaa
- National Liver Institute (NLI)MenoufiyaEgypt
| | - W. Osman
- National Liver Institute (NLI)MenoufiyaEgypt
| | - H. Razavi
- Center for Disease Analysis (CDA)LouisvilleCOUSA
| | - H. Zaghla
- National Liver Institute (NLI)MenoufiyaEgypt
| | - I. Waked
- National Liver Institute (NLI)MenoufiyaEgypt
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Abstract
The aim of this study was to systematically review the evidence for the impact of scrotal cooling on spermatogenesis. EMBASE (1980-2010) and MEDLINE (1950-Sept. 2010) databases were searched using the terms 'male infertility or subfertility or fertility', combined with a separate search of 'scrotal cooling', without any limits or restrictions. A total of eight articles met the criteria for inclusion in the study. There was insufficient evidence to draw any firm conclusions about the impact of scrotal cooling on male fertility. A positive trend of improved male fertility was however observed. There is therefore a need for well designed randomised controlled trials.
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Affiliation(s)
- I Nikolopoulos
- Department of Obstetrics and Gynaecology, Queens Medical Centre, Nottingham University Hospitals, Nottingham, UK.
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Affiliation(s)
- S. Mokhtar
- a National Institute of Standards, Cairo, Egypt
| | - W. Osman
- a National Institute of Standards, Cairo, Egypt
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Brettle J, Osman W. Work hardening characteristics of titanium T 160. Eng Med 1976; 5:41-3. [PMID: 1035868 DOI: 10.1243/emed_jour_1976_005_015_02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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