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Khamis T, Abdelkhalek A, Abdellatif H, Dwidar N, Said A, Ahmed R, Wagdy K, Elgarhy R, Eltahan R, Mohamed H, Said Amer E, Hanna M, Ragab T, Kishk A, Wael J, Sarhan E, Saweres L, Reda M, Elkomy S, Mohamed A, Samy A, Khafaga A, Shaker Y, Yehia H, Alanazi A, Alassiri M, Tîrziu E, Bucur IM, Arisha AH. BM-MSCs alleviate diabetic nephropathy in male rats by regulating ER stress, oxidative stress, inflammation, and apoptotic pathways. Front Pharmacol 2023; 14:1265230. [PMID: 38044936 PMCID: PMC10690373 DOI: 10.3389/fphar.2023.1265230] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 10/12/2023] [Indexed: 12/05/2023] Open
Abstract
Introduction: Diabetic nephropathy (DN), a chronic kidney disease, is a major cause of end-stage kidney disease worldwide. Mesenchymal stem cells (MSCs) have become a promising option to mitigate several diabetic complications. Methods: In this study, we evaluated the therapeutic potential of bone marrow-derived mesenchymal stem cells (BM-MSCs) in a rat model of STZ-induced DN. After the confirmation of diabetes, rats were treated with BM-MSCs and sacrificed at week 12 after treatment. Results: Our results showed that STZ-induced DN rats had extensive histopathological changes, significant upregulation in mRNA expression of renal apoptotic markers, ER stress markers, inflammatory markers, fibronectin, and intermediate filament proteins, and reduction of positive immunostaining of PCNA and elevated P53 in kidney tissue compared to the control group. BM-MSC therapy significantly improved renal histopathological changes, reduced renal apoptosis, ER stress, inflammation, and intermediate filament proteins, as well as increased positive immunostaining of PCNA and reduced P53 in renal tissue compared to the STZ-induced DN group. Conclusion: In conclusion, our study indicates that BM-MSCs may have therapeutic potential for the treatment of DN and provide important insights into their potential use as a novel therapeutic approach for DN.
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Affiliation(s)
- Tarek Khamis
- Department of Pharmacology and Laboratory of Biotechnology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Adel Abdelkhalek
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Hussein Abdellatif
- Department of Human and Clinical Anatomy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
- Anatomy and Embryology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Nourelden Dwidar
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Ahmed Said
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Rama Ahmed
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Kerolos Wagdy
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Rowina Elgarhy
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Rawan Eltahan
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Hisham Mohamed
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Eman Said Amer
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Maria Hanna
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Tarek Ragab
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Abdallah Kishk
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Judy Wael
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Eyad Sarhan
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Linda Saweres
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Mohamed Reda
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Sara Elkomy
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Abdalah Mohamed
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Abdullah Samy
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Ateya Khafaga
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Youliana Shaker
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Hamdy Yehia
- Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
| | - Asma Alanazi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Mohammed Alassiri
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
- Department of Basic Sciences, College of Science and Health Professions, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Riyadh, Saudi Arabia
- Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City (KAMC), Ministry of the National Guard—Health Affairs, Riyadh, Saudi Arabia
| | - Emil Tîrziu
- Department of Animal Production and Veterinary Public Health, Faculty of Veterinary Medicine, University of Life Sciences, “King Mihai I” from Timisoara [ULST], Timisoara, Romania
| | - Iulia Maria Bucur
- Department of Animal Production and Veterinary Public Health, Faculty of Veterinary Medicine, University of Life Sciences, “King Mihai I” from Timisoara [ULST], Timisoara, Romania
| | - Ahmed Hamed Arisha
- Department of Animal Physiology and Biochemistry, Faculty of Veterinary Medicine, Badr University in Cairo, Badr, Egypt
- Department of Physiology, Laboratory of Biotechnology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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Alsohaimi IH, Alhumaimess MS, Hassan HMA, Reda M, Aldawsari AM, Chen Q, Kariri MA. Chitosan Polymer Functionalized-Activated Carbon/Montmorillonite Composite for the Potential Removal of Lead Ions from Wastewater. Polymers (Basel) 2023; 15:polym15092188. [PMID: 37177334 PMCID: PMC10180836 DOI: 10.3390/polym15092188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
A simple approach for synthesizing a highly adsorbent composite was described for the uptake of heavy metal ions from wastewater. A simple approach for synthesizing a highly adsorbent composite was also described for the elimination of heavy metal ions from contaminated water. The nanocomposite was synthesized via a polymer grafting of chitosan on the activated carbon surface, followed by a stacking process with the layers of montmorillonite clay. The spectroscopic analyses were exploited to confirm the composite structure of the prepared materials. Various adsorption parameters, such as pH, initial concentration, and adsorption time, were assessed. The results showed that the adsorption capacity of the composite for Pb2+ ions increased as the pH increased until it reached pH 5.5. The maximum adsorption capacity was observed at an initial Pb2+ level of 20 mg/L and a contact time of 150 min. Kinetic models were evaluated, and the pseudo second-order model showed the best match. The adsorption isotherm data were processed by fitting the model with different isotherm behaviors, and the Langmuir isotherm was found to be the most suitable for the system. The maximum adsorption capacity for Pb2+ ion on the MMT/CS/AC composite was found to be 50 mg/g at pH 5.5. Furthermore, the composite maintained a high adsorption capability of 85% for five adsorption-desorption cycles. Overall, this composite is envisioned as an addition to the market of wastewater remediation technology due to its chemical structure, which provides influential functional groups for wastewater treatment.
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Affiliation(s)
| | - Mosaed S Alhumaimess
- Chemistry Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia
| | - Hassan M A Hassan
- Chemistry Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia
| | - Mohamed Reda
- Chemistry Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia
| | - Abdullah M Aldawsari
- Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia
| | - Qiao Chen
- Chemistry Department, School of Life Sciences, Sussex University, Brighton BN1 9QJ, UK
| | - Mohammed Abdo Kariri
- Chemistry Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia
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El-Hemaly A, El-Ayadi M, Ahmed S, Taha H, Said M, Refaat A, Ammar H, Maher E, Badawy E, Reda M, El-Beltagy M, Zaghloul MS, El-Haddad A. Prognostic factors affecting infantile medulloblastoma outcomes in the molecular era: a 12-year single-center experience from Egypt. Future Oncol 2023; 19:355-367. [PMID: 36987975 DOI: 10.2217/fon-2022-0559] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Aims: To assess the clinical, pathological and molecular characteristics (Sonic hedgehog and group 3/4 molecular subtypes expression) and treatment modalities for infantile medulloblastoma in correlation with outcomes. Materials & methods: A retrospective study of 86 medulloblastoma patients (≤3 years) was conducted. M0 patients <2.5 years received four cycles of chemotherapy followed by focal radiotherapy (FRT) and chemotherapy. Between 2007 and 2015, Metastatic patients <2.5 years received craniospinal irradiation (CSI) after the end of chemotherapy. After 2015, metastatic patients <2.5 years received CSI postinduction. Results: The hazard ratio for death was significantly higher in the FRT (HR = 2.8) group compared with the CSI group (hazard ratio = 1). Metastatic disease significantly affected the overall survival of the Sonic hedgehog group and the overall survival and event-free survival of group 3/4. Conclusion: Metastatic disease had a significant impact on outcomes. FRT is not effective in treating infantile medulloblastoma.
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Affiliation(s)
- Ahmed El-Hemaly
- Department of Pediatric Oncology, National Cancer Institute (NCI)-Cairo University & Children's Cancer Hospital of Egypt (CCHE), Cairo, Egypt
| | - Moatasem El-Ayadi
- Department of Pediatric Oncology, National Cancer Institute (NCI)-Cairo University & Children's Cancer Hospital of Egypt (CCHE), Cairo, Egypt
| | - Soha Ahmed
- Department of Clinical Oncology & Nuclear Medicine, Suez University
| | - Hala Taha
- Department of Pathology, NCI-Cairo University, Cairo, Egypt
- Department of Pathology, CCHE, Cairo, Egypt
| | - Marwa Said
- Department of Pathology, CCHE, Cairo, Egypt
| | - Amal Refaat
- Department of Radiodiagnosis, NCI-Cairo University & CCHE, Cairo, Egypt
| | - Hany Ammar
- Department of Clinical Oncology, Aswan University & Radiation Oncology Department, CCHE, Cairo, Egypt
| | - Eslam Maher
- Department of Clinical Research, CCHE, Cairo, Egypt
| | - Eman Badawy
- Department of Medical Affairs, Pierre Fabre, Cairo, Egypt
| | | | | | - Mohamed S Zaghloul
- Department of Radiation Oncology, NCI-Cairo University, & CCHE, Cairo, Egypt
| | - Alaa El-Haddad
- Department of Pediatric Oncology, National Cancer Institute (NCI)-Cairo University & Children's Cancer Hospital of Egypt (CCHE), Cairo, Egypt
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Mensink F, Los J, Reda M, Focks JJ, Oemrawsingh R, Damman P, van Wely M, Gehlmann H, van Royen N, Van Geuns RJ. TCT-576 Serum Cholesterol Levels Do Not Influence Lipid Core Burden Index. J Am Coll Cardiol 2022. [DOI: 10.1016/j.jacc.2022.08.681] [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: 10/14/2022]
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Reda M, Onsy A, Elhosseini MA, Haikal AY, Badawy M. A discrete variant of cuckoo search algorithm to solve the Travelling Salesman Problem and path planning for autonomous trolley inside warehouse. Knowl Based Syst 2022. [DOI: 10.1016/j.knosys.2022.109290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Mensink FB, Reda M, Los J, Damman P, van Roijen N, van Wely MH, Gehlmann HR, ten Cate TJ, van Geuns RJM. Intensive Lipid-Lowering Therapy Directly Post-ACS Increases FFR and Decreases Plaque Size. Cardiovascular Revascularization Medicine 2022. [DOI: 10.1016/j.carrev.2022.06.166] [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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Mensink FB, Reda M, Los J, Damman P, Roijen, van N, Wely, van MH, Gehlmann HR, Cate, ten TJ, Jan M van Geuns R. CRT-400.16 Intensive Lipid-Lowering Therapy Directly Post-ACS Increases FFR and Decreases Plaque Size. JACC Cardiovasc Interv 2022. [DOI: 10.1016/j.jcin.2022.01.188] [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: 11/16/2022]
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Abdelsameea Ibrahim G, Soliman Nasr A, Atta F, Reda M, Abdelghany H, El-Demiry NM, Shalaby M. The Assessment of Intrapartum Transperineal Ultrasonographic Parameters for their Effectiveness in Evaluation of Progress of Labor and Prediction of Mode of Delivery in Egyptian Women. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.7049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: High fetal head station has been associated with prolonged labor and delivery outcomes. Although clinical assessment of fetal head station is both subjective and unreliable, women with prolonged labor are subjected to multiple digital vaginal examinations. The use of ultrasound has been proposed to aid in the management of labor since 1990s. Ultrasound examination is more accurate and reproducible than clinical examination in the diagnosis of fetal head station and in the prediction of arrest of labor. Ultrasound examination can, to some extent, distinguish those women destined for spontaneous vaginal delivery and those destined for operative delivery and may predict the outcome of instrumental vaginal delivery. Such a technique has the potential to reduce the frequency of intrusive internal examinations and associated infection and could be useful in allowing the assessment of women in whom digital VE is traumatic or contra-indicated. Intrapartum ultrasound not only provides objective and quantitative data in labor, but also helps to make more reliable clinical decisions aiming to improve obstetric outcomes of both the mother and fetus as a supplementary tool for active management.
Aim of the work: This study aims at assessing the value of intrapartum transperineal ultrasonography as a quantitative and objective tool in the evaluation of progress of labor and prediction of mode of delivery.
Subjects: This study was a prospective observational study conducted on 600 primiparous women in active first stage of labor admitted to Kasr Al Ainy maternity hospital from January 2017 to June 2018. The studied population was divided into two groups. Group A of 300 women with normal progress of labor and group B of 300 women with prolonged 1st stage of labor.
Methods: Fetal head station(FHS) was assessed clinically by digital vaginal examination (dVE) and sonographically by transperineal ultrasound measurement of head perineal distance (HPD) and angle of progression (AOP). Intrapartum care of the patient continued as normal based only on digital vaginal examinations using the modified WHO partogram. (1). Statistical analysis was targeted towards assessing the potential of the intrapartum ultrasonography in the evaluation of progress of labor and prediction of mode of delivery.
Results: All studied parameters for assessment of FHS (dVE, HPD, and AOP) significantly corelated with each other and with both progress of labor and mode of delivery with P value (<0.001). The highest sensitivity for prediction of progress of labor is observed using dVE (83%), the highest specificity is observed using AOP (78.3%). The highest sensitivity for prediction mode of delivery is for combined HPD & AOP (97.7%) while the highest specificity is for AOP (81%). When combining both HPD and AOP for prediction of mode of delivery, the assessment of both parameters was found to have a high sensitivity of 97.7% and a high positive predictive value of 86.63%.
Conclusion: Intrapartum ultrasound examination is a valuable tool in the prediction of progress of labor and mode of delivery. The assessment of fetal head station by transperineal ultrasound measurement of HPD and AOP is much more informative of the progress of labor and the mode of delivery than digital assessment of fetal head station.
Keywords: Labor, intrapartum ultrasound, Angle of progression, Head perineal distance, fetal head station, digital vaginal examination.
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Schmitt A, Reda M, Macaire P, Bellio H, Uwer L, Ilie S, Lorgis V, Hennequin A, Ladoire S, Rederstorff E, Fumoleau P, Isambert N, Bonnin N, You B, Freyer G, Desmoulins I. 147P When a single G-CSF administration is better than longer duration: Example in patients treated by eribulin. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.03.161] [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] Open
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10
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Shen L, Reda M, Zhao Y. Image-matching enhancement using a polarized intensity-hue-saturation fusion method. Appl Opt 2021; 60:3699-3715. [PMID: 33983302 DOI: 10.1364/ao.419726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
Atmospheric absorption and scattering (e.g., haze) cause degradation in the image quality of outdoor scenes, which affects the image-matching process. The scale-invariant feature transform (SIFT) algorithm is not effective in haze. Edge information is required to enhance the matching process. Utilizing the polarization information expressed by the Stokes vector component S1 with its edge information can improve the keypoint localization in the matching process. In this paper, a novel, to the best of our knowledge, fusion method called polarized intensity-hue-saturation is proposed that uses polarization and depth information by fusion of a polarized haze-removed image with the estimated depth and by applying S1. The instant dehazing method uses polarized images to obtain a haze-removed image and its estimated depth map. The fused image has high spatial details required for enhancing the matching process. The experimental results show that the proposed method outperforms the existing image-matching schemes and improves the conventional SIFT matching method.
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El-Dorry A, Reda M, El Khalek SA, El-Din Mohamed S, Mohamed R, Nabil A. Egyptian Universities Digital Certificate Verification Model Using Blockchain. Proceedings of the 2020 9th International Conference on Software and Information Engineering (ICSIE) 2020. [DOI: 10.1145/3436829.3436864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Alley El-Dorry
- Department of Computer Science, Misr International University, Cairo, Egypt
| | - Mohamed Reda
- Department of Computer Science, Misr International University, Cairo, Egypt
| | | | | | - Radwa Mohamed
- Department of Computer Science, Misr International University, Cairo, Egypt
| | - Ayman Nabil
- Department of Computer Science, Misr International University, Cairo, Egypt
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Reda M, Noel C, Settembre N, Chambert J, Lejeune A, Jacquet E. Agent-based modelling of the smooth muscle cells migration induced by mechanical vibration: a preliminary study. Comput Methods Biomech Biomed Engin 2020. [DOI: 10.1080/10255842.2020.1815326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Reda
- Institut national de recherche et de sécurité (INRS), Vandoeuvre-Lès-Nancy, France
- Department of Applied Mechanics, Univ. Bourgogne Franche-Comté, FEMTO-ST Institute UFC/CNRS/ENSMM/UTBM, Besançon, France
| | - C. Noel
- Institut national de recherche et de sécurité (INRS), Vandoeuvre-Lès-Nancy, France
| | - N. Settembre
- Department of Vascular Surgery, Nancy University Hospital, Nancy, France
| | - J. Chambert
- Department of Applied Mechanics, Univ. Bourgogne Franche-Comté, FEMTO-ST Institute UFC/CNRS/ENSMM/UTBM, Besançon, France
| | - A. Lejeune
- Department of Applied Mechanics, Univ. Bourgogne Franche-Comté, FEMTO-ST Institute UFC/CNRS/ENSMM/UTBM, Besançon, France
| | - E. Jacquet
- Department of Applied Mechanics, Univ. Bourgogne Franche-Comté, FEMTO-ST Institute UFC/CNRS/ENSMM/UTBM, Besançon, France
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Ebuy Y, Alemayehu T, Reda M, Berhe M, Bsrat A. Community knowledge, attitude and practice on rabies, incidence in humans and animals and risk factors to rabies in selected districts of Tigray Region, Ethiopia. ACTA ACUST UNITED AC 2019. [DOI: 10.4314/nvj.v40i2.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Baglivo S, Bianconi F, Tofanetti F, Ricciuti B, Pistola L, Siggillino A, Reda M, Metro G, Bellezza G, Minotti V, Roila F, Ludovini V. P1.01-65 Immune Gene Expression, Bayesian Network and Genetic Mutation Analysis in Advanced NSCLC Patients Treated with Immunotherapy. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mahmoud A, Ehab L, Reda M, Abdelaleem M, El Munim HA, Ghoneima M, Darweesh MS, Mostafa H. Real-Time Lane Detection-Based Line Segment Detection. 2018 New Generation of CAS (NGCAS) 2018. [DOI: 10.1109/ngcas.2018.8572124] [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: 09/01/2023]
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Saad A, Fekry M, Reda M, Elkholy H, Ali M. 004 Sexual dysfunctions in a sample of female Egyptians diagnosed with obsessive compulsive disorder. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nosotti M, Privitera E, Lazzeri M, Mariani S, Rosso L, Tosi D, Palleschi A, Mendogni P, Righi I, Carrinola R, Montoli M, Torre M, Reda M, Santambrogio L. B-004PROPHYLACTIC CONTINUOUS POSITIVE AIRWAY PRESSURE AFTER PULMONARY LOBECTOMY FOR LUNG CANCER: A RANDOMIZED CONTROLLED TRIAL. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.004] [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: 11/12/2022] Open
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18
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Abdel-Rasheed M, Nour Eldeen G, Mahmoud M, ElHefnawi M, Abu-Shahba N, Reda M, Elsetohy K, Nabil M, Elnoury A, Taha T, Azmy O. MicroRNA expression analysis in endometriotic serum treated mesenchymal stem cells. EXCLI J 2017; 16:852-867. [PMID: 28828000 PMCID: PMC5547388 DOI: 10.17179/excli2017-101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 03/01/2017] [Indexed: 01/14/2023]
Abstract
Endometriosis is defined by presence of endometrial-like-tissue outside the uterus. Recently, ectopic endometriotic lesions have been suggested to originate by abnormal differentiation of endometrial mesenchymal stem cells (eMSCs). MicroRNAs (miRNAs) play an important role in the pathophysiology of endometriosis. Through a PCR array approach, we aimed to assess the differential expression of microRNAs in human eMSC treated in culture with sera derived from women with severe endometriosis. Sera were collected from five patients with severe endometriosis and three control women and added individually in the culture medium to conduct experimental and control eMSC sets, respectively. Regular microscopic follow-up for cell morphology was performed. SYBR Green based real-time PCR array was used to assess the expression of 84 miRNAs. Bioinformatics analysis was done to predict the target genes of the significantly dysregulated miRNAs and their enriched biological processes and pathways. Thirty-two miRNAs were found significantly dysregulated in experimental cultures. Functional enrichment analysis revealed several endometriosis associated biological processes and pathways were enriched by target genes of these miRNAs. In conclusion, treatment of human eMSCs with sera of severe endometriosis cases affects the expression of certain miRNAs and their target genes. This may result in altering cell functions and consequently, endometriosis development.
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Affiliation(s)
- Mazen Abdel-Rasheed
- Department of Reproductive Health Research, National Research Centre, Cairo, Egypt
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
| | - Ghada Nour Eldeen
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
- Department of Molecular Genetics and Enzymology, National Research Centre, Cairo, Egypt
| | - Marwa Mahmoud
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
- Department of Medical Molecular Genetics, National Research Centre, Cairo, Egypt
| | - Mahmoud ElHefnawi
- Biomedical Informatics and Chemo-informatics group, Informatics and Systems Department, National Research Centre, Cairo, Egypt
| | - Nourhan Abu-Shahba
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
- Department of Medical Molecular Genetics, National Research Centre, Cairo, Egypt
| | - Mohamed Reda
- Department of Reproductive Health Research, National Research Centre, Cairo, Egypt
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
| | - Khaled Elsetohy
- Department of Obstetrics and Gynecology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Michael Nabil
- Department of Molecular Genetics, CliniLab, Cairo, Egypt
| | - Amr Elnoury
- Department of Medical Applications of Laser, National Institute of Laser Enhanced Sciences, Cairo University, Cairo, Egypt
| | - Tamer Taha
- Department of Reproductive Health Research, National Research Centre, Cairo, Egypt
| | - Osama Azmy
- Department of Reproductive Health Research, National Research Centre, Cairo, Egypt
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
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Refaee EAE, Refaat MI, Reda M. Incidence of Secondary Hydrocephalus after Excision of Huge Encephaloceles in Neonates: Case Study. J Neurol Surg A Cent Eur Neurosurg 2017; 79:15-18. [PMID: 28147383 DOI: 10.1055/s-0036-1597548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Encephaloceles presents as a protrusion of the cranial contents through a defect in the cranium. The most common sites of occurrence are the occipital and frontonasal regions. The surgical outcome is reported to be satisfactory; however, the incidence of hydrocephalus in patients with encephaloceles is variable in the literature. This study investigated the relationship between the size of the encephaloceles and the occurrence of hydrocephalus. PATIENT AND METHODS Data of all neonates with encephaloceles who presented to our institution from September 2012 to September 2014 were collected. Surgery was performed during the first 2 weeks of age. Encephaloceles with a maximal diameter > 10 cm were included in the study, and the clinical picture, surgical technique, pre- and postoperative imaging, and follow-up were analyzed. RESULTS Nineteen cases were included in this study. The mean follow-up period was 7 months. Sixteen cases were occipital; three were frontal. In all patients the maximum diameter was > 10 cm. However, in four patients it was > 18 cm. Postoperative ventriculomegaly occurred in seven cases. Of these, four patients needed a permanent ventriculoperitoneal shunt implantation (21%). Wound dehiscence occurred in two patients who required secondary sutures with a favorable outcome. One patient died 2 weeks after the surgery due to a poor general condition and wound infection. CONCLUSION Early surgical excision provides effective treatment of huge encephaloceles. Overall, 21% of cases require cerebrospinal fluid (CSF) diversion afterward depending on associated anomalies. Despite their size, giant encephaloceles can have an excellent prognosis with no need for further treatment or CSF diversion.
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Affiliation(s)
- Ehab Ahmed El Refaee
- Department of Neurosurgery, Universitätsmedizin Greifswald, Klinik und Poliklinik für Neurochirurgie, Greifswald, Germany.,Department of Neurosurgery, Faculty of Medicine, Cairo University Hospitals Kasr Al Ainy-El Manial Hospital 26, Cairo, Egypt
| | - Mohamed Ibrahim Refaat
- Department of Neurosurgery, Cairo University Kasr Alainy Faculty of Medicine, Cairo, Egypt
| | - Mohamed Reda
- Department of Neurosurgery, Cairo University Kasr Alainy Faculty of Medicine, Cairo, Egypt
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Macdonald A, Drinnan M, Johnston A, Reda M, Griffiths C, Wilson J, Gibson GJ. Evaluation of Potential Predictors of Outcome of Laser-Assisted Uvulopalatoplasty for Snoring. Otolaryngol Head Neck Surg 2016; 134:197-203. [PMID: 16455364 DOI: 10.1016/j.otohns.2005.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2005] [Indexed: 11/18/2022]
Abstract
OBJECTIVE: Laser-assisted uvulopalatoplasty (LAUP) is a common treatment for snoring, but up to 50% of patients obtain little or no sustained benefit. We investigated whether pre-operative measurements from lateral cephalometry, acoustic rhinometry, analysis of snoring sounds, and body mass index (BMI) could predict which snorers benefited from LAUP. STUDY DESIGN AND SETTING: Fifty-five snoring patients were assessed pre- and 6 months post-LAUP. Snoring severity was assessed by objective sound level recorded during polysomnography, and a Snoring Symptoms Inventory (SSI) questionnaire. RESULTS: The outcome of surgery was assessed by changes in objective sound measurements and in SSI, 6 months after LAUP. CONCLUSIONS: Relationships between the predictive measurements and outcome were at best only weak and none had sufficient predictive value to be useful in clinical practice. EBM rating: C-4
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Affiliation(s)
- Audrey Macdonald
- Department of Medical Physics, Freeman Hospital, High Heaton, Newcastle upon Tyne, UK
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El Beltagy MA, Reda M, Enayet A, Zaghloul MS, Awad M, Zekri W, Taha H, El-Khateeb N. Treatment and Outcome in 65 Children with Optic Pathway Gliomas. World Neurosurg 2016; 89:525-34. [DOI: 10.1016/j.wneu.2016.02.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 02/07/2016] [Accepted: 02/09/2016] [Indexed: 11/27/2022]
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Ebrahim S, Reda M, Hussien A, Zayed D. CdTe quantum dots as a novel biosensor for Serratia marcescens and Lipopolysaccharide. Spectrochim Acta A Mol Biomol Spectrosc 2015; 150:212-9. [PMID: 26051643 DOI: 10.1016/j.saa.2015.05.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 05/02/2015] [Accepted: 05/04/2015] [Indexed: 05/08/2023]
Abstract
The main objective of this work is to synthesize CdTe quantum dots (QDs) conjugated with Concanavalin A (Con A) as a novel biosensor to be selective and specific for the detection of Lipopolysaccharide (LPS). In addition, the conjugated CdTe QDs-Con A was used as fluorescence labels to capture Serratia marcescens bacteria through the recognition between CdTe QDs-Con A and LPS of S. marcescens. The appearance of the lattice plans in the high resolution transmission electron photograph indicated a high crystalline with an average size of 4-5 nm for the CdTe QDs. The results showed that the relative fluorescence intensity of CdTe QDs-Con A decreased linearly with LPS concentration in the range from 10 to 90 fg/mL and with correlation coefficient (R(2)) equal to 0.9713. LPS surrounding the S. marcescens bacteria was bound to the CdTe QDs-Con A and leads to quenching of PL intensity. It was found that a good linear relationship between the relative PL intensity and the logarithmic of cell population of S. marcescens in range from 1×10 to 1×10(6) CFU/mL at pH 7 with R(2) of 0.952 was established.
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Affiliation(s)
- Sh Ebrahim
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, El-Shatby, P.O. Box 832, Alexandria, Egypt.
| | - M Reda
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, El-Shatby, P.O. Box 832, Alexandria, Egypt
| | - A Hussien
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, El-Shatby, P.O. Box 832, Alexandria, Egypt
| | - D Zayed
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
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Orsucci F, Paoloni G, Conti CM, Reda M, Fulcheri M. The role of oxytocin in plasticity, memory and attachment dynamics. J BIOL REG HOMEOS AG 2013; 27:947-954. [PMID: 24382175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The peptide hormones oxytocin (OT) and arginine vasopressin (AVP) have been implicated in the regulation of mammalian social behavior. There is considerable evidence implicating both oxytocin and vasopressin in social recognition and social memory. This review explores their role in attachment dynamics. Oxytocin is one element in a complex network of interactions observed in natural phenomena ranging from molecular biology, etology, social behavior and human psychology.
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Affiliation(s)
- F Orsucci
- Division of Psychology and Language Sciences, University College London, London, United Kingdom
| | - G Paoloni
- Department of Psychological, Humanistic and Territorial Sciences, University of Chieti-Pescara, Italy
| | - C M Conti
- Department of Psychological, Humanistic and Territorial Sciences, University of Chieti-Pescara, Italy
| | - M Reda
- Department of Neurology and Behavioral Sciences, University of Siena, Siena, Italy
| | - M Fulcheri
- Department of Psychological, Humanistic and Territorial Sciences, University of Chieti-Pescara, Italy
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Tosi D, Mendogni P, Rosso L, Palleschi A, Filippi N, Reda M, Santambrogio L, Nosotti M. Early Lung Retransplantation in a Patient Affected by Cystic Fibrosis Correlated With Donor Cause of Death: A Case Report. Transplant Proc 2012; 44:2041-2. [DOI: 10.1016/j.transproceed.2012.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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El-Awady MK, Tabll AA, Yousif H, El-Abd Y, Reda M, Khalil SB, El-Zayadi AR, Shaker MH, Bader El Din NG. Murine neutralizing antibody response and toxicity to synthetic peptides derived from E1 and E2 proteins of hepatitis C virus. Vaccine 2010; 28:8338-44. [PMID: 19995542 DOI: 10.1016/j.vaccine.2009.11.059] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Revised: 11/19/2009] [Accepted: 11/20/2009] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The highest estimated prevalence of HCV infection has been reported in Egypt, nearly 12% mostly type 4. Currently, a commercial vaccine to protect this high risk population as well as global HCV infected patients is not available. OBJECTIVES In the present study, we aim at: (1) examining the viral binding capacities of purified monospecific polyclonal murine antibodies raised against genetically conserved viral protein sequences, i.e. synthetic peptides derived from those sequences located within envelope proteins and (2) assessment of immunogenic properties and safety parameters of those peptides individually and in a vaccine format in mice. METHODS Purified IgG Abs from immunized mice were used in immunocapture RT-PCR experiments to test viral neutralization by Abs raised against each of 4 peptides termed p35 (E1), p36 (E2), p37 (E2) and p38 (E2). Swiss mice were immunized with each of the 3 peptides (p35, p37 and p38) which generated neutralizing antibodies in immunocapture experiments. Antibody responses to corresponding peptides were determined using different routes of administration, different adjuvants, different doses and at different time points post-injection. To explore the dose range for future pharmacological studies, three doses namely 50 ng, 10 μg and 50 μg/25 gm mouse body weight were tested for biochemical and histopathological changes in several organs. RESULTS Murine Abs against p35, p37 and p38 but not p36 showed HCV neutralization in immunocapture experiments. Subcutaneous injection of peptides elicited higher responses than i.m. and i.p. Immunization with Multiple Antigenic Peptide (MAP) form or coupled to Al PO4 elicited the highest Ab responses. Peptide doses of 50 ng/25 gm body weight or less were effective and safe, however dose assessment still requires further study. Histopathological changes were observed in animals that received doses ∼1000 times higher than the potential therapeutic dose. CONCLUSION Exploration of humoral immunogenicity, neutralization capacity and safety suggested that the peptides presented herein are candidate vaccine components for further preclinical assessment.
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Affiliation(s)
- Mostafa K El-Awady
- Biomedical Technology Department, National Research Center, Tahrir Street 12622, Dokki, Cairo, Egypt.
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El-Awady MK, Tabll AA, Yousif H, El-Abd Y, Reda M, Khalil SB, El-Zayadi AR, Shaker MH, Bader El Din NG. Murine neutralizing antibody response and toxicity to synthetic peptides derived from E1 and E2 proteins of hepatitis C virus. Vaccine 2010. [PMID: 19995542 DOI: 10.1016/j.vaccine.2009.11.059.] [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: 11/30/2022]
Abstract
INTRODUCTION The highest estimated prevalence of HCV infection has been reported in Egypt, nearly 12% mostly type 4. Currently, a commercial vaccine to protect this high risk population as well as global HCV infected patients is not available. OBJECTIVES In the present study, we aim at: (1) examining the viral binding capacities of purified monospecific polyclonal murine antibodies raised against genetically conserved viral protein sequences, i.e. synthetic peptides derived from those sequences located within envelope proteins and (2) assessment of immunogenic properties and safety parameters of those peptides individually and in a vaccine format in mice. METHODS Purified IgG Abs from immunized mice were used in immunocapture RT-PCR experiments to test viral neutralization by Abs raised against each of 4 peptides termed p35 (E1), p36 (E2), p37 (E2) and p38 (E2). Swiss mice were immunized with each of the 3 peptides (p35, p37 and p38) which generated neutralizing antibodies in immunocapture experiments. Antibody responses to corresponding peptides were determined using different routes of administration, different adjuvants, different doses and at different time points post-injection. To explore the dose range for future pharmacological studies, three doses namely 50 ng, 10 μg and 50 μg/25 gm mouse body weight were tested for biochemical and histopathological changes in several organs. RESULTS Murine Abs against p35, p37 and p38 but not p36 showed HCV neutralization in immunocapture experiments. Subcutaneous injection of peptides elicited higher responses than i.m. and i.p. Immunization with Multiple Antigenic Peptide (MAP) form or coupled to Al PO4 elicited the highest Ab responses. Peptide doses of 50 ng/25 gm body weight or less were effective and safe, however dose assessment still requires further study. Histopathological changes were observed in animals that received doses ∼1000 times higher than the potential therapeutic dose. CONCLUSION Exploration of humoral immunogenicity, neutralization capacity and safety suggested that the peptides presented herein are candidate vaccine components for further preclinical assessment.
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Affiliation(s)
- Mostafa K El-Awady
- Biomedical Technology Department, National Research Center, Tahrir Street 12622, Dokki, Cairo, Egypt.
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El Sheriff H, Reda M, Gonzalez C, Hassouba AB, Abd El Hady A, Sidky M. Reservoir Simulation Explains Production Problems in Nile Delta Gas Field. All Days 2010. [DOI: 10.2118/127811-ms] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
This paper provides a case study of how detailed reservoir modeling and simulation helped to explain existing production problems and to subsequently optimize reservoir management for a gas field in the Nile Delta. In this example the complex geology of a fluvial deltaic system was modeled using the concepts of sequence stratigraphy to build the basic reservoir architecture for the Abu Madi Formation. Then seismic attributes were used to characterize the detailed facies and permeability distribution and the interplay of sands and shale in the reservoir intervals. This allowed a representative three dimensional reservoir simulation model to be built that could more accurately reproduce the water influx and gas water contact movement that had happened in the reservoir as a result of historical production conditions. In addition it confirmed that the different reservoir intervals had different reservoir drive mechanisms and thus needed to be managed differently. This was not fully understood using conventional techniques due to the relatively low well density.
This paper will include the specific lessons learnt for three gas wells in a small Upper Abu Madi fluvial channel in the Nile Delta Field where production conditions caused rapid water influx, water production from coning and gas blocking between wells which was not recognized without the detailed geological and dynamic understanding. In addition it will document the development optimization scenarios that were performed for all reservoir levels to maximize recovery. It shows that even for relatively small reservoirs the use of reservoir modeling and simulation can be cost effective by allowing the optimization of production conditions, improved recovery and the prevention of unproductive well interventions.
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El-Awady MK, Tabll AA, El-Abd YS, Yousif H, Hegab M, Reda M, El Shenawy R, Moustafa RI, Degheidy N, El Din NGB. Conserved peptides within the E2 region of Hepatitis C virus induce humoral and cellular responses in goats. Virol J 2009. [PMID: 19473491 DOI: 10.1186/1743-422x-6-66.] [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: 12/09/2022] Open
Abstract
The reason(s) why human antibodies raised against hepatitis C virus (HCV) E2 epitopes do not offer protection against multiple viral infections may be related to either genetic variations among viral strains particularly within the hypervariable region-1 (HVR-1), low titers of anti E2 antibodies or interference of non neutralizing antibodies with the function of neutralizing antibodies. This study was designed to assess the immunogenic properties of genetically conserved peptides derived from the C-terminal region of HVR-1 as potential therapeutic and/or prophylactic vaccines against HCV infection. Goats immunized with E2-conserved synthetic peptides termed p36 (a.a 430-446), p37(a.a 517-531) and p38 (a.a 412-419) generated high titers of anti-p36, anti-p37 and anti-P38 antibody responses of which only anti- p37 and anti- p38 were neutralizing to HCV particles in sera from patients infected predominantly with genotype 4a. On the other hand anti-p36 exhibited weak viral neutralization capacity on the same samples. Animals super-immunized with single epitopes generated 2 to 4.5 fold higher titers than similar antibodies produced in chronic HCV patients. Also the studied peptides elicited approximately 3 fold increase in cell proliferation of specific antibody-secreting peripheral blood mononuclear cells (PBMC) from immunized goats. These results indicate that, besides E1 derived peptide p35 (a.a 315-323) described previously by this laboratory, E2 conserved peptides p37 and p38 represent essential components of a candidate peptide vaccine against HCV infection.
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Affiliation(s)
- Mostafa K El-Awady
- Department of Biomedical Technology, National Research Center, Giza, Egypt.
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29
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El-Awady MK, Tabll AA, El-Abd YS, Yousif H, Hegab M, Reda M, El Shenawy R, Moustafa RI, Degheidy N, El Din NGB. Conserved peptides within the E2 region of Hepatitis C virus induce humoral and cellular responses in goats. Virol J 2009; 6:66. [PMID: 19473491 PMCID: PMC2694788 DOI: 10.1186/1743-422x-6-66] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Accepted: 05/27/2009] [Indexed: 02/07/2023] Open
Abstract
The reason(s) why human antibodies raised against hepatitis C virus (HCV) E2 epitopes do not offer protection against multiple viral infections may be related to either genetic variations among viral strains particularly within the hypervariable region-1 (HVR-1), low titers of anti E2 antibodies or interference of non neutralizing antibodies with the function of neutralizing antibodies. This study was designed to assess the immunogenic properties of genetically conserved peptides derived from the C-terminal region of HVR-1 as potential therapeutic and/or prophylactic vaccines against HCV infection. Goats immunized with E2-conserved synthetic peptides termed p36 (a.a 430-446), p37(a.a 517-531) and p38 (a.a 412-419) generated high titers of anti-p36, anti-p37 and anti-P38 antibody responses of which only anti- p37 and anti- p38 were neutralizing to HCV particles in sera from patients infected predominantly with genotype 4a. On the other hand anti-p36 exhibited weak viral neutralization capacity on the same samples. Animals super-immunized with single epitopes generated 2 to 4.5 fold higher titers than similar antibodies produced in chronic HCV patients. Also the studied peptides elicited approximately 3 fold increase in cell proliferation of specific antibody-secreting peripheral blood mononuclear cells (PBMC) from immunized goats. These results indicate that, besides E1 derived peptide p35 (a.a 315-323) described previously by this laboratory, E2 conserved peptides p37 and p38 represent essential components of a candidate peptide vaccine against HCV infection.
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Affiliation(s)
- Mostafa K El-Awady
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Ashraf A Tabll
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Yasmine S El-Abd
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Hassan Yousif
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Mohsen Hegab
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Mohamed Reda
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Reem El Shenawy
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Rehab I Moustafa
- Department of Biomedical Technology, National Research Center, Giza, Egypt
| | - Nabila Degheidy
- Parasitology and Animal Diseases Department, National Research Center, Giza, Egypt
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Reda M, Sharaf HA, Gaber EM, Embaby ESM, El-Katan N, Abdel-Wahhab MA. EVALUATION OF THE PROTECTIVE EFFECTS OF JOJOBA EXTRACT AGAINST FUMONISIN TOXICITY IN RATS. ACTA ACUST UNITED AC 2009. [DOI: 10.21608/ejhm.2009.17565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bellieni C, Maffei M, Brogna A, Plantulli A, Cervo E, Reda M, Signorini L, Buonocore G, Petraglia F. Consumerism in Prenatal Diagnosis? A Local Italian Study. Fetal Diagn Ther 2008; 24:29-34. [DOI: 10.1159/000132402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2007] [Accepted: 02/14/2007] [Indexed: 11/19/2022]
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Parmentier J, Vix-Guterl C, Saadallah S, Reda M, Illescu M, Werckmann J, Patarin J. Organised Mesoporous Silica Synthesised by Nanoscale Duplication of an Ordered Mesoporous Carbon Material Using a Gas Phase Process. CHEM LETT 2003. [DOI: 10.1246/cl.2003.262] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
OBJECTIVE To evaluate the use of alcohol- and detergent-preserved tracheal allografts in dogs. MATERIAL AND METHODS Experimental segmental tracheal replacement was performed in 18 adult mongrel dogs. Three different techniques were tried in three groups of dogs. In the first group, a four-ring cervical tracheal segment was dissected out and implanted in the trachea of another dog. In the second group, the procedure was performed using a tracheal allograft that had been preserved in 70% ethyl alcohol for 20 days. In the third group, tracheal grafts were previously impregnated in 10% povidone iodine for 72 h before being implanted. Allografts were harvested 60 days after transplantation and assessed both histologically and in terms of the percentage patency. Dogs that died within 60 days were also included in the analysis. RESULTS The best results were found in the group in which the tracheal allograft had been preserved in ethyl alcohol and this was explained by the reduced antigenicity of the graft in this group. CONCLUSIONS The use of alcohol-preserved allografts is a practical method of tracheal transplantation, and the alcohol-preservation technique markedly reduces the immunogenicity of the grafts.
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Affiliation(s)
- H Gaafar
- Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
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Abstract
OBJECTIVES This study tests the sensitivity and the specificity of overnight pharyngoesophageal pressure measurement for identification and classification of obstructive sleep apnea (OSA). METHODS Fifty-nine snoring patients undergoing polysomnography were invited to have simultaneous pharyngoesophageal manometry. We used a soft silicone catheter with 4 microtip pressure sensors at different levels. RESULTS The apnea hypopnea indexes (AHIs) measured by the 2 methods were highly correlated (r = 0.971). Manometry was 100% sensitive and specific in excluding OSA and identifying severe OSA. It was 90% sensitive in identifying moderate OSA and 80% sensitive in identifying mild OSA. CONCLUSION Overnight ambulatory pharyngoesophageal manometry is a reliable tool for the exclusion of OSA and identification of severe OSA. It has additional advantages of localizing the level of obstruction and identifying the upper airway resistance syndrome and can be performed at home. It is cost-effective when compared with polysomnography and may aid in treatment selection for individual patients.
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Affiliation(s)
- M Reda
- Otolaryngology-Head and Neck Surgery Department, Freeman Hospital, High Heaton, Newcastle Upon Tyne, NE7 7DN, UK
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Abstract
INTRODUCTION: Snoring is a common cause of marital disharmony and social embarrassment. Obstructive sleep apnoea (OSA) have further impact on Quality of Life (QoL). AIMS: First, to compare the impact of snoring and OSA on QoL; second, to assess the impact of laser palatoplasty (LAUP) on QoL in snorers. METHODS: We conducted a prospective cohort comparison of 191 snorers (mean age 46 years; 132 men, 59 women), 57 patients with OSA (mean age 47 years; 49 men, 8 women), and 105 patients, at a mean of 12 months (range, 4-24 months) after LAUP (mean age 45 years; 82 men, 23 women). All completed the Nottingham Health Profile (NHP) and the results were compared with established NHP population norms. RESULTS: The results are shown in Table 1. CONCLUSIONS: This is the largest QoL study of snorers to date and shows that both snoring and OSA have clear impacts on all six NHP domains. The magnitude of the impact in snoring approaches that for OSA for most parameters. The impact of OSA on the sleep domain in men is significantly higher than that of snoring. Energy and emotional reaction domains are significantly improved by LAUP in both sexes, to levels approaching those in the normal population. Also pain, sleep, social isolation and mobility in habitual snorers was helped by surgery. The NHP generic QoL health status measure is a useful tool for the assessment of sleep disorders.
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Affiliation(s)
- M Reda
- (Department of Otolaryngology/Head and Neck Surgery, University of Newcastle and Freeman Hospital, Newcastle upon Tyne, UK)
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Reda M, Kłobus G, Buczek J. [Structure and regulation of nitrate reductase]. Postepy Biochem 2000; 46:99-106. [PMID: 15971381] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- M Reda
- Zakład Fizjologii Roślin, Instytut Botaniki Uniwersytetu Wrocławskiego, Kanonia 6/8, 50-328 Wrocław
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Reda M, Sims AJ, Collins MM, McKee GJ, Marshall H, Kelly PJ, Wilson JA. Morphological assessment of the soft palate in habitual snoring using image analysis. Laryngoscope 1999; 109:1655-60. [PMID: 10522938 DOI: 10.1097/00005537-199910000-00020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Define differences in palatal and uvular dimensions between habitual snorers and healthy nonsnoring control subjects. Document the changes in palatal configuration after different types of palatoplasty. STUDY DESIGN A prospective controlled clinical study was performed analyzing video recordings of the soft palate and oropharynx of 251 subjects (121 habitual snorers, 79 patients after laser-assisted uvulopalatoplasty ([LAUP], and 51 healthy volunteers). METHODS The recordings were captured using a rigid endoscope with a reference measure applied to the soft palate and a mark at the junction of the soft and hard palate. Four parameters were studied in the captured pictures after correction for the distortion deformity in fiberoptic endoscopic images: 1) length of soft palate, 2) length of uvula, 3) width of uvula, and 4) distance between posterior pillars. RESULTS Analysis showed that habitual snorers, compared with healthy volunteers have significantly increased soft palate length (P = .00001), increased uvula length (P = .0002) and width (P = .00001), and narrowed oropharyngeal isthmus (distance between the posterior pillars) (P = .04). In patients studied after LAUP, the length of the soft palate is significantly shorter (P = .00001) than in the preoperative cohort, and the oropharyngeal isthmus is significantly narrower (P = .00001). Moreover, this latter distance is significantly narrower (P = .00001) when compared with healthy volunteers. CONCLUSIONS Habitual snorers have a long soft palate, a long wide uvula, and a narrowed oropharyngeal isthmus. LAUP shortens and tightens the elongated palate and causes a further reduction in the space between the posterior pillars.
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Affiliation(s)
- M Reda
- Department of Otolaryngology and Head and Neck Surgery, Freeman Hospital, University of Newcastle, Newcastle Upon Tyne, UK
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Reda M, Sims AJ, Collins MM, Mckee GJ, Marshall H, Kelly PJ, Wilson JA. Palatal assessment in habitual snoring using image analysis. Clin Otolaryngol 1999. [DOI: 10.1046/j.1365-2273.1999.00254-14.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Reda M, Puccetti G. [The mortality trend for respiratory system tumors in 1979-1990 in Italy]. Ann Ig 1994; 6:519-24. [PMID: 8611223] [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] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- M Reda
- Ist. di Igiene G. Sanarelli, Università degli Studi di Roma La Sapienza
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Metwally AI, Mashhady AS, Falatah AM, Reda M. Effect of pH on Zinc Adsorption and Solubility in Suspensions of Different Clays and Soils. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/jpln.19931560206] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
A total of 50 patients 40 years old or less presented with transitional cell carcinoma of the bladder between 1967 and 1982: 24 were 15 to 30 years old (group 1) and 26 were 31 to 40 years old (group 2). Of the patients 2 (8 per cent) in group 1 and 14 (54 per cent) in group 2 had recurrences. Invasion did not occur in group 1 but it did occur in 3 patients in group 2. Almost two-thirds of each group smoked roughly 20 cigarettes per day. It would appear that bladder carcinoma in patients 30 years old or less has a favorable prognosis but it still should be followed carefully. Disease occurring when the patient is 31 to 40 years old has a much worse prognosis and is no different from that affecting the older age groups.
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Abstract
In 64 men with prostatic carcinoma, calcium excretion per litre of glomerular filtrate (Cae) was persistently lower in those with bone secondaries than in those with soft tissue involvement only, despite a normal range of serum calcium in both groups. In three patients who showed an improvement in their bony metastases on bone scan 6 months after starting treatment, the Cae values had increased slightly but still remained in the low range. In a further five who showed no improvement on bone scan, Cae values were lower than before. In patients with prostatic carcinoma, Cae is an indicator of early changes in calcium homeostasis. It may also provide an objective indication of progression of bone secondaries.
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Abstract
Tubal dysfunction is certainly involved in some cases of infertility. Clinical diagnostic procedures for tubal patency are occasionally misleading and contradictory. Moreover, they provide no information on tubal function. The recovery of viable sperm in Douglas pouch aspirates (DPA) was used to evaluate tubal function in 94 infertile patients with different tubal findings at hysterosalpingography (HS) and laparoscopy. Sperm recovery in DPA of ten infertile patients with poor or negative postcoital Sims- Huhner test results demonstrated the limitation of this test for evaluation of sperm transport in the female genital tract. Laparoscopic aspiration of DP may be performed in infertile patients undergoing chromosalpingoscopy as a part of their infertility investigation. The procedure should be supplementary to other available diagnostic parameters.
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