Publications

Export 15566 results:
Sort by: Author Title Type [ Year  (Desc)]
2021
Tanaka, Y., E. Fathalla, and K. Maekawa, "Numerical evaluation of remaining fatigue life of road bridge deck with data assimilation approach", Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations: CRC Press, pp. 1152-1160, 2021. Abstract
n/a
Medhat, M., M. Yehia, A. Khalil, M. C. Franco, and R. C. Rocha, "A Numerical Prediction of Stabilized Turbulent Partially Premixed Flames Using Ammonia/Hydrogen Mixture", Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 87 , issue 3, pp. 20, 2021. 3979-manuscript_with_authors_details-19912-6-10-202110061.pdf
Medhat, M., M. Yehia, A. Khalil, M. C. Franco, and R. C. Rocha, "A Numerical Prediction of Stabilized Turbulent Partially Premixed Flames Using Ammonia/Hydrogen Mixture", Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 87, issue 3, pp. 113-133, 2021.
Farouk, M. I., A. F. Nassar, and M. H. Elgamal, "Numerical Study of the Transmission of Exhaled Droplets between the Instructor and Students in a Typical Classroom", Applied Sciences, vol. 11, issue 20, pp. 9767, 2021.
Elsadek, A. E., Y. H. A. Maksoud, H. A. Suliman, A. H. Al-shokary, A. O. Ibrahim, N. M. Kamal, M. G. E. D. Fathallah, H. H. Elshorbagy, and W. E. Abdelghani, "Omega-3 supplementation in children with ADHD and intractable epilepsy.", Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia, vol. 94, pp. 237-243, 2021. Abstract1-s2.0-s0967586821005282-main.pdf

BACKGROUND: Omega-3 may have a role in the treatment of drug- resistant epilepsy.

OBJECTIVES: To evaluate omega-3 supplementation in seizure control in children with attention deficit hyperactivity disorder (ADHD) and intractable epilepsy.

PATIENTS AND METHODS: Sixty children with ADHD and intractable epilepsy were enrolled. They were randomly assigned in a double-blind fashion in a 1:1 ratio into the omega-3 supplementation group or the placebo group in addition to risperidone and antiepileptic drugs. All patients were assessed for the frequency and severity of the epileptic attacks at baseline, monthly, and at 6 months from the beginning of the study; 30 children received omega-3 and the other 30 children received placebo.

RESULTS: At baseline, the median number of seizures per month was 5 in both groups. After one month, this median decreased to 3 and became 2 after two months of supplementation with omega-3 in the supplementation group while it remained 5 in the control group. After 3 months and till the end of the study, this median decreased to 0 while it remained 5 in the control group throughout the study period. Children who were supplemented with omega-3 showed a significant decrease in the monthly frequency of seizure attacks after six months of supplementation compared to the baseline before supplementation (P < 0.05) There was no significant decrease in the severity of the seizures attacks among our patients with omega-3 supplementation (P > 0.05).

CONCLUSION: Omega 3 may help in achieving good seizure control in children with ADHD and intractable epilepsy.

Elsadek, A. E., Y. H. A. Maksoud, H. A. Suliman, A. H. Al-shokary, A. O. Ibrahim, N. M. Kamal, M. G. E. D. Fathallah, H. H. Elshorbagy, and W. E. Abdelghani, "Omega-3 supplementation in children with ADHD and intractable epilepsy.", Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia, vol. 94, pp. 237-243, 2021. Abstract1-s2.0-s0967586821005282-main.pdf

BACKGROUND: Omega-3 may have a role in the treatment of drug- resistant epilepsy.

OBJECTIVES: To evaluate omega-3 supplementation in seizure control in children with attention deficit hyperactivity disorder (ADHD) and intractable epilepsy.

PATIENTS AND METHODS: Sixty children with ADHD and intractable epilepsy were enrolled. They were randomly assigned in a double-blind fashion in a 1:1 ratio into the omega-3 supplementation group or the placebo group in addition to risperidone and antiepileptic drugs. All patients were assessed for the frequency and severity of the epileptic attacks at baseline, monthly, and at 6 months from the beginning of the study; 30 children received omega-3 and the other 30 children received placebo.

RESULTS: At baseline, the median number of seizures per month was 5 in both groups. After one month, this median decreased to 3 and became 2 after two months of supplementation with omega-3 in the supplementation group while it remained 5 in the control group. After 3 months and till the end of the study, this median decreased to 0 while it remained 5 in the control group throughout the study period. Children who were supplemented with omega-3 showed a significant decrease in the monthly frequency of seizure attacks after six months of supplementation compared to the baseline before supplementation (P < 0.05) There was no significant decrease in the severity of the seizures attacks among our patients with omega-3 supplementation (P > 0.05).

CONCLUSION: Omega 3 may help in achieving good seizure control in children with ADHD and intractable epilepsy.

Elsadek, A. E., Y. H. A. Maksoud, H. A. Suliman, A. H. Al-shokary, A. O. Ibrahim, N. M. Kamal, M. G. E. D. Fathallah, H. H. Elshorbagy, and W. E. Abdelghani, "Omega-3 supplementation in children with ADHD and intractable epilepsy.", Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia, vol. 94, pp. 237-243, 2021. Abstract1-s2.0-s0967586821005282-main.pdf

BACKGROUND: Omega-3 may have a role in the treatment of drug- resistant epilepsy.

OBJECTIVES: To evaluate omega-3 supplementation in seizure control in children with attention deficit hyperactivity disorder (ADHD) and intractable epilepsy.

PATIENTS AND METHODS: Sixty children with ADHD and intractable epilepsy were enrolled. They were randomly assigned in a double-blind fashion in a 1:1 ratio into the omega-3 supplementation group or the placebo group in addition to risperidone and antiepileptic drugs. All patients were assessed for the frequency and severity of the epileptic attacks at baseline, monthly, and at 6 months from the beginning of the study; 30 children received omega-3 and the other 30 children received placebo.

RESULTS: At baseline, the median number of seizures per month was 5 in both groups. After one month, this median decreased to 3 and became 2 after two months of supplementation with omega-3 in the supplementation group while it remained 5 in the control group. After 3 months and till the end of the study, this median decreased to 0 while it remained 5 in the control group throughout the study period. Children who were supplemented with omega-3 showed a significant decrease in the monthly frequency of seizure attacks after six months of supplementation compared to the baseline before supplementation (P < 0.05) There was no significant decrease in the severity of the seizures attacks among our patients with omega-3 supplementation (P > 0.05).

CONCLUSION: Omega 3 may help in achieving good seizure control in children with ADHD and intractable epilepsy.

Boutrus, R. R., S. El Sherif, Y. Abdelazim, M. Bayomy, A. S. Gaber, A. Farahat, T. Hashem, and M. E. Sebaie, "Once Daily Versus Twice Daily External Beam Accelerated Partial Breast Irradiation: A Randomized Prospective Study.", International journal of radiation oncology, biology, physics, vol. 109, issue 5, pp. 1296-1300, 2021. Abstract

PURPOSE: The aim of the current study was to compare toxicity, cosmesis, and local control between the once daily and the twice daily fractionation schemes for external beam accelerated partial breast irradiation.

METHODS AND MATERIALS: From December 2012 to June 2018, we enrolled 113 patients with ductal carcinoma in situ or invasive breast cancer, node negative disease, and tumors less than 3 cm in size to receive accelerated partial breast irradiation (APBI) to a total dose of 38.5 Gy over 10 fractions given either once (oAPBI) or twice daily (tAPBI). Sixty patients were included in the tAPBI arm and 53 patients were included in the oAPBI arm.

RESULTS: Median follow-up was 74 months (range, 24-105). The median pain score during treatment was 3 out of 10 in the oAPBI and 5 in the tAPBI (P = .001). No differences were observed in GIII early skin toxicity (P = .4) or GI early pulmonary toxicity (P = 1.0) between the 2 treatment arms. GIII late skin toxicity developed in 3.8% and 11.7% of patients in the oAPBI and tAPBI arms, respectively (P = .001). GIII subcutaneous fibrosis developed in 1.9% and 8.3% of patients in the oAPBI and tAPBI, respectively (P = .001). The rate of patients with adverse cosmesis (poor/fair) was 7.5% at 12 months and at 24 months in the oAPBI arm compared with 21.7% and 26.7% in the tAPBI arm (P = .03 and .008, respectively).

CONCLUSIONS: oAPBI is a safe, well-tolerated schedule with more favorable outcomes than the tAPBI schedule with regards to late toxicity and cosmesis.

F. M. Abdelrazek, S. M. Gomha, M. S. Farghaly, and P. Metz, "One-Pot, three-component synthesis of pyrido[2,3-d]pyrimidinones using aluminate sulfonic acid nanocatalyst under grinding technique.", Polycyclic Aromatic Compounds, vol. 41, issue 7, pp. 1472-1482, 2021.
AbdElaty, A. M., M. E. Fouda, M. T. M. M. Elbarawy, and A. G. Radwan, "Optimal charging of fractional-order circuits with Cuckoo search", Journal of Advanced Research, vol. 32: Elsevier, pp. 119-131, 2021. Abstract
n/a
AbdElaty, A. M., M. E. Fouda, M. T. M. M. Elbarawy, and A. G. Radwan, "Optimal charging of fractional-order circuits with Cuckoo search", Journal of Advanced Research, vol. 32: Elsevier, pp. 119-131, 2021. Abstract
n/a
Fakhry, P., A. A. Torky, and Y. F. Rashed, "Optimized Seismic Response Control of Coupled FEM-BEM High-Rise Structural Models Using Magnetorheological Dampers", Journal of Earthquake Engineering, pp. 1-28, 2021.
Badr-Eldin, S. M., U. A. Fahmy, H. M. Aldawsari, O. A. A. Ahmed, N. A. Alhakamy, S. Z. Okbazghi, M. A El-Moselhy, A. F. Alghaith, A. Anter, A. I. Matouk, et al., "Optimized Self-Nanoemulsifying Delivery System Based on Plant-Derived Oil Augments Alpha-Lipoic Acid Protective Effects Against Experimentally Induced Gastric Lesions.", Dose-response : a publication of International Hormesis Society, vol. 19, issue 1, pp. 15593258211001259, 2021. Abstract

Peptic ulcer disease is an injury of the alimentary tract that leads to a mucosal defect reaching the submucosa. Alpha-lipoic acid (ALA), a natural potent antioxidant, has been known as a gastroprotective drug yet its low bioavailability may restrict its therapeutic efficacy. This study aimed to formulate and optimize ALA using a self-nanoemulsifying drug delivery system (SNEDDS) with a size of nano-range, enhancing its absorption and augmenting its gastric ulcer protection efficacy. Three SNEDDS components were selected as the design factors: the concentrations of the pumpkin oil (X1, 10-30%), the surfactant tween 80 (X2, 20-50%), and the co-surfactant polyethylene glycol 200 (X3, 30-60%). The experimental design for the proposed mixture produced 16 formulations with varying ALA-SNEDDS formulation component percentages. The optimized ALA-SNEDDS formula was investigated for gastric ulcer protective effects by evaluating the ulcer index and by the determination of gastric mucosa oxidative stress parameters. Results revealed that optimized ALA-SNEDDS achieved significant improvement in gastric ulcer index in comparison with raw ALA. Histopathological findings confirmed the protective effect of the formulated optimized ALASNEDDS in comparison with raw ALA. These findings suggest that formulation of ALA in SNEDDS form would be more effective in gastric ulcer protection compared to pure ALA.

Badr-Eldin, S. M., H. M. Aldawsari, O. A. A. Ahmed, N. A. Alhakamy, T. Neamatallah, S. Z. Okbazghi, and U. A. Fahmy, "Optimized semisolid self-nanoemulsifying system based on glyceryl behenate: A potential nanoplatform for enhancing antitumor activity of raloxifene hydrochloride in MCF-7 human breast cancer cells.", International journal of pharmaceutics, vol. 600, pp. 120493, 2021. Abstract

Raloxifene hydrochloride (RLX) is a selective estrogen receptor modulator used for treatment and protection against postmenopausal osteoporosis. The drug has been used for protection against breast cancer and more recently, for management of the disease by virtue of its estrogen antagonist action. However, the drug has reduced bioavailability related to low water solubility and first pass metabolism. To surmount these pitfalls, this study aimed at developing and optimizing RLX-loaded semisolid self-nanoemulsifying system (SSNES) with minimized globule size to improve the drug solubility, tumor penetration, and consequently antitumor activity. A simplex lattice mixture design was employed for the formulation and optimization of SSNESs. The mixture components, namely, Compritol® 888 ATO, Tween 20, and polyethylene glycol 200 exhibited significant effect on globule size at P < 0.05. The optimized formulation with globule size of 109.19 ± 2.11 nm showed acceptable thermodynamic stability under stress conditions. Anti-cancer efficacy of the obtained formulation was evaluated in MCF-7 breast cancer cell line. MTT viability assay revealed that RLX-loaded SSNES notably inhibited MCF-7 cell proliferation. Flow cytometry and dual staining with annexin V-FITC/PI were used to assay this anti-proliferative effect and induction of apoptosis, respectively. Cells treated with RLX-loaded SSNES showed significant arrest at G2/M phase associated with significant increase in early/late-stages of apoptotic and necrotic cells. The results exhibited that RLX-loaded SSNES induces apoptosis via the activation of caspase-3 and loss of mitochondrial membrane potential. Accordingly, the proposed SSNES could be regarded as a promising platform for enhancing RLX antitumor activity against breast cancer.

Sharaky, A. M., M. F, R. K., B. M., and K. Y, "The optimum location of intakes in Nile Basin, Water and Energy International", Water and Energy International, vol. 64, issue 1, pp. 24-28, 2021. 2021_water_intakes.pdf
Zidan, M. N., N. Everitt, T. Ismail, and I. S. Fahim, "Organic Solar Cells Parameters Extraction and Characterization Techniques", Polymers, vol. 13, no. 19: Multidisciplinary Digital Publishing Institute, pp. 3224, 2021. Abstract
n/a
Hasan, M. M., M. A. Rahman, M. Skalicky, N. M. Alabdallah, M. M. El-Mogy, and X. - W. Fang, "Ozone Induced Stomatal Regulations, MAPK and Phytohormone Signaling in Plants", International Journal of Molecular Sciences, vol. 22, issue 12, pp. 6304, 2021.
Abdelhafiz, S. M., A. M. AbdelAty, M. E. Fouda, and A. G. Radwan, "Parameter identification of commercial li-ion batteries with marine predator algorithm", 2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS): IEEE, pp. 208-211, 2021. Abstract
n/a
Abdelhafiz, S. M., A. M. AbdelAty, M. E. Fouda, and A. G. Radwan, "Parameter identification of commercial li-ion batteries with marine predator algorithm", 2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS): IEEE, pp. 208-211, 2021. Abstract
n/a
Biccard, B. M., P. D. Gopalan, M. Miller, W. L. Michell, D. Thomson, A. Ademuyiwa, E. Aniteye, G. Calligaro, M. S. Chaibou, H. T. Dhufera, et al., "Patient care and clinical outcomes for patients with COVID-19 infection admitted to African high-care or intensive care units (ACCCOS): a multicentre, prospective, observational cohort study", The Lancet, vol. 397, no. 10288, pp. 1885-1894, 2021. AbstractWebsite

Summary Background There have been insufficient data for African patients with COVID-19 who are critically ill. The African COVID-19 Critical Care Outcomes Study (ACCCOS) aimed to determine which resources, comorbidities, and critical care interventions are associated with mortality in this patient population. Methods The ACCCOS study was a multicentre, prospective, observational cohort study in adults (aged 18 years or older) with suspected or confirmed COVID-19 infection who were referred to intensive care or high-care units in 64 hospitals in ten African countries (ie, Egypt, Ethiopia, Ghana, Kenya, Libya, Malawi, Mozambique, Niger, Nigeria, and South Africa). The primary outcome was in-hospital mortality censored at 30 days. We studied the factors (ie, human and facility resources, patient comorbidities, and critical care interventions) that were associated with mortality in these adult patients. This study is registered on ClinicalTrials.gov, NCT04367207. Findings From May to December, 2020, 6779 patients were referred to critical care. Of these, 3752 (55·3%) patients were admitted and 3140 (83·7%) patients from 64 hospitals in ten countries participated (mean age 55·6 years; 1890 [60·6%] of 3118 participants were male). The hospitals had a median of two intensivists (IQR 1–4) and pulse oximetry was available to all patients in 49 (86%) of 57 sites. In-hospital mortality within 30 days of admission was 48·2% (95% CI 46·4–50·0; 1483 of 3077 patients). Factors that were independently associated with mortality were increasing age per year (odds ratio 1·03; 1·02–1·04); HIV/AIDS (1·91; 1·31–2·79); diabetes (1·25; 1·01–1·56); chronic liver disease (3·48; 1·48–8·18); chronic kidney disease (1·89; 1·28–2·78); delay in admission due to a shortage of resources (2·14; 1·42–3·22); quick sequential organ failure assessment score at admission (for one factor [1·44; 1·01–2·04], for two factors [2·0; 1·33–2·99], and for three factors [3·66, 2·12–6·33]); respiratory support (high flow oxygenation [2·72; 1·46–5·08]; continuous positive airway pressure [3·93; 2·13–7·26]; invasive mechanical ventilation [15·27; 8·51–27·37]); cardiorespiratory arrest within 24 h of admission (4·43; 2·25–8·73); and vasopressor requirements (3·67; 2·77–4·86). Steroid therapy was associated with survival (0·55; 0·37–0·81). There was no difference in outcome associated with female sex (0·86; 0·69–1·06). Interpretation Mortality in critically ill patients with COVID-19 is higher in African countries than reported from studies done in Asia, Europe, North America, and South America. Increased mortality was associated with insufficient critical care resources, as well as the comorbidities of HIV/AIDS, diabetes, chronic liver disease, and kidney disease, and severity of organ dysfunction at admission. Funding The ACCCOS was partially supported by a grant from the Critical Care Society of Southern Africa.

Elshahed, M. S., A. Miron, A. C. Aprotosoaie, and M. A. Farag, "Pectin in diet: Interactions with the human microbiome, role in gut homeostasis, and nutrient-drug interactions.", Carbohydrate polymers, vol. 255, pp. 117388, 2021. Abstract

Pectins are a part of daily diet as well as food additives that are indigestible polysaccharides by human enzymes, however, they can be easily degraded by gut bacteria with the production of short chain fatty acids (SCFAs). Knowledge of pectin gut homeostasis and further how pectin affect gut bacterial communities is insufficient and limited. This review focuses on providing the whole story of how pectin functions as prebiotics in the gut. Understanding the interplay between functional and immunological responses inside animal or human gut as influenced by pectin in diets is provided. The interaction between pectin and gut microbiota is presented from both sides, in terms of how pectin affects gut microbiome and or the fermentation products produced in response by gut bacteria. This knowledge can be used to define preferred dietary pectins, targeting beneficial bacteria, and favoring balanced microbiota communities in the gut to maximize pectins' health benefits.

Basanti, C., M. A. Kotb, H. M. Seif, F. I. Farag, and A. K. Abdelmegeid, "Pediatric Chest Ultrasound for Bedside Diagnosis of Pneumonia: A Validation Study for Diagnostic Options in Developing Countries", Pediatric Sciences Journal, vol. 1, issue 1, pp. 15-24, 2021.
Fadel, F. I., H. M. Bazaraa, M. A. Abdel Mawla, and D. M. Salah, "Pediatric focal segmental glomerulosclerosis: favorable transplantation outcome with plasma exchange.", Italian journal of pediatrics, vol. 47, issue 1, pp. 236, 2021. Abstract

BACKGROUND: Although kidney transplantation (KTX) is the treatment of choice for pediatric end stage kidney disease (ESKD); concerns for recurrence in cases of focal segmental glomerulosclerosis (FSGS) are still present. This study aimed to investigate the outcome of KTX in children with ESKD secondary to FSGS, with implementation of preemptive perioperative plasma exchange (PE) for non-genetically proven patients.

METHODS: Forty FSGS pediatric kidney transplant recipients were studied. Of them: 12 patients (30%) had genetically proven NPHS2 mutations/familial and 28 (70%) were sporadic FSGS patients. All sporadic patients electively received 6 perioperative PE sessions. Patients with recurrence of proteinuria (n = 13; including 3 patients with genetic/familial and 10 patients with sporadic FSGS) were managed with PE and Rituximab (RTX). Kaplan-Meier curves were used to analyze graft and recurrence free survival data.

RESULTS: The mean follow-up duration after KTX was 3.8 ± 2.86 years. Recurrence of proteinuria was encountered early postoperative in 11 patients (27.5%) and late (1.6 and 2.9 years after KTX) in 2 patients (5%). All patients with early recurrence achieved complete remission, while patients with late recurrence developed graft failure. Current serum creatinine and proteinuria levels were not different in patients received PE (n = 31) and patients did not PE (n = 9) (p = 0.308 and 0.287 respectively). Current serum creatinine and proteinuria levels in sporadic patients (n = 28) after prophylactic perioperative PE were not different from those of genetic/ familial patients (n = 12) (p = 0.303 and 0.144 respectively). Proteinuria was less in patients underwent native nephrectomy than others immediately postoperative and at assessment (p = 0.002 & 0.0031 respectively). One-year graft and patient survival was 93.8% with a mean 1-year serum creatinine of 0.67 ± 0.25 mg/dl. Three graft losses (7.5%) were due to chronic rejection 3.3, 3.75 and 4.17 years after KTX and 2 patients' mortality (5%) occurred early postoperative (first 2 weeks).

CONCLUSION: FSGS transplanted children have favorable outcomes with perioperative PE for non-genetically proven cases. Early recurrence after KTX can be successfully managed with PE and RTX.

Fahmy, S. A., M. Y. Issa, B. M. Saleh, M. R. Meselhy, and H. M. E. - S. Azzazy, "Peganum harmala Alkaloids Self-Assembled Supramolecular Nanocapsules with Enhanced Antioxidant and Cytotoxic Activities", ACS Omega, vol. 6, issue 18, pp. 11954-11963, 2021.
Tourism