7,870 results on '"Mohamed A."'
Search Results
2. Therapeutic potential of vitamin D against bisphenol A-induced spleen injury in Swiss albino mice
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Mohamed A. Al-Griw, Hanan N. Balog, Taher Shaibi, Mohamed Fouzi Elmoaket, Iman Said Ali AbuGamja, Ahlam Bashir AlBadawi, Ghalia Shamlan, Ammar Alfarga, Areej A. Eskandrani, Afnan M. Alnajeebi, Nouf A. Babteen, Wafa S. Alansari, and Rabia Alghazeer
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Medicine ,Science - Abstract
Bisphenol A (BPA), a ubiquitous plasticizer, is capable of producing oxidative splenic injury, and ultimately led to spleen pathology. Further, a link between VitD levels and oxidative stress was reported. Hence the role of VitD in BPA-induced oxidative splenic injury was investigated in this study. Sixty male and female Swiss albino mice (3.5 weeks old) were randomly divided into control and treated groups 12 mice in each (six males and six females). The control groups were further divided into sham (no treatment) and vehicle (sterile corn oil), whereas the treatment group was divided into VitD (2,195 IU/kg), BPA (50 μg/kg), and BPA+VitD (50 μg/kg + 2,195 IU/kg) groups. For six weeks, the animals were dosed intraperitoneally (i.p). One week later, at 10.5 weeks old, mice were sacrificed for biochemical and histological analyses. Findings showed BPA triggered neurobehavioral abnormalities and spleen injury with increased apoptotic indices (e.g. DNA fragmentation) in both sexes. A significant increase was found in lipid peroxidation marker, MDA in splenic tissue, and leukocytosis. Conversely, VitD treatment altered this scenario into motor performance preservation, reducing oxidative splenic injury with a decrease in the percent apoptotic index. This protection was significantly correlated with preserving leukocyte counts and reduced MDA levels in both genders. It can be concluded from the above findings that VitD treatment has an ameliorative effect on oxidative splenic injury induced by BPA, highlighting the continuous crosstalk between oxidative stress and the VitD signaling pathway.
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- 2023
3. Clinical and radiological effects of Corticosteroid injection combined with deep transverse friction massage and Mill’s manipulation in lateral epicondylalgia–A prospective, randomized, single-blinded, sham controlled trial
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Gopal Nambi, Mshari Alghadier, Anju Verma, Osama R. Aldhafian, Naif N. Alshahrani, Ayman K. Saleh, Mohamed A. Omar, Tohamy G. T. Hassan, Mohamed Nagah Ahmed Ibrahim, and Hassan Fathy El Behairy
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Medicine ,Science - Abstract
Background The knowledge about the effective implementation of corticosteroid injection (CS) with deep transverse friction massage (DTFM) and Mill’s manipulation (MM) on clinical and radiological changes (Magnetic resonance imaging—MRI and Ultra sound) in lateral epicondylalgia (LE) is lacking. Therefore, the objective of this study is proposed to find and compare the effects of corticosteroid injection (CS) DTFM and Mill’s manipulation on clinical and radiological changes in lateral epicondylalgia. Design, setting, participants Randomized, single-blinded, controlled study was conducted on 60 LE participants at university hospital. The active MM group (n = 30) received corticosteroid injection with DTFM and active Mill’s manipulation (MM) three sessions a week for 4 weeks and the sham MM group received corticosteroid injection with sham manipulation. The primary outcome was pain intensity, measured with the visual analog scale. The other outcome measures were percentage of injury measured by MRI and ultrasound, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life which were measured at 4 weeks, 8weeks and at 6 months follow up. Results The between-group difference in pain intensity at 4 weeks was 1.6 (CI 95% 0.97 to 2.22), which shows improvement in the active group than sham group. The similar effects have been noted after 8 weeks and at 6 months 2.0 (CI 95% 1.66 to 2.33) follow up in pain intensity. Similar improvements were also found on percentage of injury, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life (p = 0.001). Conclusion Corticosteroid injection with DTFM and Mill’s manipulation was superior to sham group for improving pain, percentage of injury, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life in people with lateral epicondylalgia. Trial registration Clinical trial registration:CTRI/2020/05/025135 trial registered prospectively on 12/05/2020. https://trialsearch.who.int/Trial2.aspx?TrialID=CTRI/2020/05/025135.
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- 2023
4. Isolation, molecular characterization, and genetic diversity of recently isolated foot-and-mouth disease virus serotype A in Egypt
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Ramy E. El-Ansary, Samy Kasem, Mohamed A. M. El-Tabakh, Yassien Badr, and Ahmed S. Abdel-Moneim
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Medicine ,Science - Published
- 2023
5. Social accountability in primary health care facilities in Tanzania: Results from Star Rating Assessment
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Erick S. Kinyenje, Talhiya A. Yahya, Joseph C. Hokororo, Eliudi S. Eliakimu, Mohamed A. Mohamed, Mbwana M. Degeh, Omary A. Nassoro, Chrisogone C. German, Radenta P. Bahegwa, Yohanes S. Msigwa, Ruth R. Ngowi, Laura E. Marandu, and Syabo M. Mwaisengela
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Medicine ,Science - Abstract
Background Star Rating Assessment (SRA) was initiated in 2015 in Tanzania aiming at improving the quality of services provided in Primary Healthcare (PHC) facilities. Social accountability (SA) is among the 12 assessment areas of SRA tools. We aimed to assess the SA performance and its predictors among PHC facilities in Tanzania based on findings of a nationwide reassessment conducted in 2017/18. Methods We used the SRA database with results of 2017/2018 to perform a cross-sectional secondary data analysis on SA dataset. We used proportions to determine the performance of the following five SA indicators: functional committees/boards, display of information on available resources, addressing local concerns, health workers’ engagement with local community, and involvement of community in facility planning process. A facility needed four indicators to be qualified as socially accountable. Adjusted odds ratios (AOR) with 95% confidence intervals (CI) were used to determine facilities characteristics associated with SA, namely location (urban or rural), ownership (private or public) and level of service (hospital, health centre or dispensary). Results We included a total of 3,032 PHC facilities of which majority were dispensaries (86.4%), public-owned (76.3%), and located in rural areas (76.0%). On average, 30.4% of the facilities were socially accountable; 72.0% engaged with local communities; and 65.5% involved communities in facility planning process. Nevertheless, as few as 22.5% had functional Health Committees/Boards. A facility was likely to be socially-accountable if public-owned [AOR 5.92; CI: 4.48–7.82, p = 0.001], based in urban areas [AOR 1.25; 95% CI: 1.01–1.53, p = 0.038] or operates at a level higher than Dispensaries (Health centre or Hospital levels) Conclusion Most of the Tanzanian PHC facilities are not socially accountable and therefore much effort in improving the situation should be done. The efforts should target the lower-level facilities, private-owned and rural-based PHC facilities. Regional authorities must capacitate facility committees/boards and ensure guidelines on SA are followed.
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- 2022
6. Toxic and repellent impacts of botanical oils against Callosobruchus maculatus (Bruchidae: Coleoptera) in stored cowpea [Vigna unguiculata (L.) Walp.]
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Muhammad Shahid Nisar, Shahbaz Ali, Tassaduq Hussain, Hassan Ramzan, Yasir Niaz, Inzamam Ul Haq, Faiza Akhtar, Mona S. Alwahibi, Mohamed S. Elshikh, Hazem M. Kalaji, Arkadiusz Telesiński, Mohamed A. A. Ahmed, and Marwa I. Mackled
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Medicine ,Science - Abstract
Cowpea (Vigna unguiculata) is an important legume which is consumed globally for protein intake, particularly in Asian states. It is a well-known source of dietary fiber, protein, minerals, and vitamins. The cowpea grains are stored after harvest and used till the next harvest. However, the grains are infested by storage pests, primarily Callosobruchus maculatus. Hence, effective management strategies are needed to protect the stored grains form the pests. This study assessed the efficacy of some edible oils in suppressing C. maculatus infestation in stored cowpea grains. Four different botanical oils (i.e., mustard, neem, poppy, and pumpkin) at four different concentrations (i.e., 0.5, 1.0, 1.5 and 2.0 ml per 100 g grain) were included in the study. A control treatment without any botanical oil was also included for comparison. The relevant concentrations of botanical oils were poured into plastic containers containing 100 g cowpea grains and ten C. maculatus adults were released. The jars were sealed and placed at room temperature. Data relating to mortality, oviposition, F1 adult emergence, and seed weight loss were recorded. The tested botanical oils and their concentrations significantly affected mortality after one day. Mortality after 2nd and 3rd days remained unaffected by botanical oils and their different concentrations. The highest mortality was recorded in neem oil-treated grains followed by poppy, pumpkin, and mustard oils. Increased oviposition rate was observed in the grains treated with mustard and pumpkin oils, while those treated with neem and poppy oil recorded decreased oviposition. The control treatment had increased oviposition rate compared to tested botanical oils. All botanical oils significantly inhibited egg laying percentage. The highest germination was recorded for the grains treated with mustard oil followed by pumpkin, poppy, and neem oils, respectively. The lowest germination was recorded for control treatment. Significant differences were noted for C. maculatus repellency among botanical oils. No emergence of adults (F1 progeny) was recorded in all tested botanical oils; thus, F1 progeny was inhibited by 100%. Weight loss, damage percentage, and holes in the grains were not recorded since F1 progeny did not emerge. It is concluded that tested botanical oils are promising and could be utilized to control C. maculatus in cowpea grains during storage.
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- 2022
7. Factors affecting mortality of hospitalized facial trauma patients in Al-Ain City, United Arab Emirates
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Mohamed A. Al-Ali, David O. Alao, and Fikri M. Abu-Zidan
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Medicine ,Science - Abstract
Background Facial injuries affect one-third of severely injured patients. These injuries have devastating long-term negative impacts on quality of life. We aimed to study the epidemiology of facial injuries and factors affecting the mortality of hospitalized facial trauma patients in Al-Ain City, United Arab Emirates. Methodology This is a retrospective analysis of prospectively collected data from Al-Ain Hospital Trauma Registry. All patients with facial injury who were hospitalized for more than 24 hours or who died after arrival at the hospital during the period from January 2014 to December 2017 were studied. Two sample data analysis was used to compare patients who died and those who survived. Significant factors were then entered into a backward logistic regression model to define factors affecting mortality. Results 408 patients having a mean age of 31.9 years were studied, 87.3% were males. The main mechanisms of injury were road traffic collisions (52.2%) and fall from height (11.3%). 289 (70.8%) patients had associated injuries which were mainly in the head and chest. The backward logistic regression model showed that the Glasgow Coma Scale (GCS) was the only factor that predicted mortality, pConclusion The majority of facial injury patients in our setting are young males who were involved in road traffic collisions or falls from height. The most important factor predicting the mortality of these patients was the low GCS. Those having a GCS of 8 and more had a better chance of survival. This information is very important when counseling patients or their relatives for facial surgery.
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- 2022
8. Role of biochar and compost in cadmium immobilization and on the growth of Spinacia oleracea
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Kinza Tanveer, Noshin Ilyas, Nosheen Akhtar, Humaira Yasmin, Daniel Ingo Hefft, Mohamed A. El-Sheikh, and Parvaiz Ahmad
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Medicine ,Science - Abstract
This research was carried out to evaluate the effect of biochar and compost application on Spinacia oleracea growth in cadmium contaminated soil. Cd toxicity decreased plant growth and biomass significantly and also negatively affected the physiological and biochemical attributes of plants. However, the application of biochar and compost improved the contaminated soil by reducing Cd toxicity and causing its immobilization, which in turn improved plant growth. The combined application of biochar and compost significantly (p < 0.05) enhanced biomass and photosynthetic pigments development in plants. The treatments also increased membrane stability index by 45.12% and enhanced water using efficiency by 218.22%, respectively. The increase in antioxidant activities was 76.03%, 29.02%, and 123.27% in superoxide dismutase, peroxidase, and catalase, respectively. The combined application also reduced the cadmium content (reduced 40.14% in root and 51.16% shoot), its translocation (19.67% decrease), and bioaccumulation (52.63% and 40.32% decrease in Cd content in shoot and root, respectively) in spinach plant. Among the two selected varieties of S. oleracea, Desi palak (V1) performed better as compared to Kanta palak (V2). It can be concluded that the combined application of biochar and compost is one of the best strategies to reduce the toxicity level of Cd in plants and to improve their growth.
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- 2022
9. Thiamin stimulates growth, yield quality and key biochemical processes of cauliflower (Brassica oleracea L. var. Botrytis) under arid conditions
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Munifa Jabeen, Nudrat Aisha Akram, Muhammad Ashraf, Anshika Tyagi, Mohamed A. El-Sheikh, and Parvaiz Ahmad
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Medicine ,Science - Abstract
Thiamin is a crucial vitamin with a vast variety of anti-oxidative and physiological roles in plants subjected to abiotic stresses. We examined the efficiency of foliar-applied thiamin (50 and 100 mM) on growth, yield quality and key-biochemical characteristics of two cultivars (FD1 and FD3) of cauliflower (Brassica oleracea L.) under water-deficit stress. Water stress at the rate of 50% field capacity (F.C.) markedly decreased the plant biomass, leaf total phenolics and ascorbic acid (AsA) contents. In contrast, drought-induced increase was noted in the leaf [hydrogen peroxide (H2O2), AsA, proline, malondialdehyde (MDA), glycinebetaine (GB), total soluble proteins and oxidative defense system in terms of high activities of peroxidase (POD), and catalase (CAT) enzymes] and the inflorescence (total phenolics, proline, GB, MDA, H2O2, and activities of SOD and CAT enzymes) characteristics of cauliflower. However, foliar-applied thiamin significantly improved growth and physio-biochemical attributes except leaf and inflorescence MDA and H2O2 contents of both cauliflower cultivars under water stress. Overall, application of thiamin enhanced the plant growth may be associated with suppressed reactive oxygen species (ROS) and upregulated antioxidants defense system of cauliflower.
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- 2022
10. Wasp venom peptide improves the proapoptotic activity of alendronate sodium in A549 lung cancer cells
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Nabil A. Alhakamy, Solomon Z. Okbazghi, Mohamed A. Alfaleh, Wesam H. Abdulaal, Rana B. Bakhaidar, Mohammed O. Alselami, Majed AL Zahrani, Hani M. Alqarni, Adel F. Alghaith, Sultan Alshehri, Shaimaa M. Badr-Eldin, Hibah M. Aldawsari, Omar D. Al-hejaili, Bander M. Aldhabi, and Wael A. Mahdi
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Medicine ,Science - Abstract
Background Lung cancer in men and women is considered the leading cause for cancer-related mortality worldwide. Anti-cancer peptides represent a potential untapped reservoir of effective cancer therapy. Methodology Box-Behnken response surface design was applied for formulating Alendronate sodium (ALS)-mastoparan peptide (MP) nanoconjugates using Design-Expert software. The optimization process aimed at minimizing the size of the prepared ALS-MP nanoconjugates. ALS-MP nanoconjugates’ particle size, encapsulation efficiency and the release profile were determined. Cytotoxicity, cell cycle, annexin V staining and caspase 3 analyses on A549 cells were carried out for the optimized formula. Results The results revealed that the optimized formula was of 134.91±5.1 nm particle size. The novel ALS-MP demonstrated the lowest IC50 (1.3 ± 0.34 μM) in comparison to ALS-Raw (37.6 ± 1.79 μM). Thus, the results indicated that when optimized ALS-MP nanoconjugate was used, the IC50 of ALS was also reduced by half. Cell cycle analysis demonstrated a significantly higher percentage of cells in the G2-M phase following the treatment with optimized ALS-MP nanoconjugates. Conclusion The optimized ALS-MP formula had significantly improved the parameters related to the cytotoxic activity towards A549 cells, compared to control, MP and ALS-Raw.
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- 2022
11. Cryo-electron structures of the extreme thermostable enzymes Sulfur Oxygenase Reductase and Lumazine Synthase
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Mohamed A. Sobhy, Lingyun Zhao, Dalaver Anjum, Ali Behzad, Masateru Takahashi, Muhammad Tehseen, Alfredo De Biasio, Rachid Sougrat, and Samir Hamdan
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Medicine ,Science - Abstract
Thermostable enzymes have the potential for use in a wide variety of biotechnological applications. Cryo-electron microscopy (cryo-EM) enables the imaging of biomolecules in their native aqueous environment. Here, we present high resolution cryo-EM structures of two thermostable enzymes that exhibit multimeric cage-like structures arranged into two different point-group symmetries. First, we determined the structure of the Sulfur Oxygenase Reductase (SOR) enzyme that catalyzes both the oxygenation and disproportionation of elemental sulfur in Archea and is composed of 24 homomeric units each of MW ≃ 35 kDa arranged in octahedral symmetry. The structure of SOR from Acidianus ambivalens (7X9W) was determined at 2.78 Å resolution. The active site of each subunit inside the central nanocompartment is composed of Fe3+ coordinated to two water molecules and the three amino acids (H86, H90 and E114). Second, we determined the structure of Lumazine Synthase (LS) from Aquifex aeolicus (7X7M) at 2.33 Å resolution. LS forms a cage-like structure consisting of 60 identical subunits each of MW ≃ 15 kDa arranged in a strict icosahedral symmetry. The LS subunits are interconnected by ion-pair network. Due to their thermostability and relatively easy purification scheme, both SOR and LS can serve as a model for the catalytic and structural characterization of biocatalysts as well as a benchmark for cryo-EM sample preparation, optimization of the acquisition parameters and 3D reconstruction.
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- 2022
12. Efficacy and cost effectiveness of intravenous ferric carboxymaltose versus iron sucrose in adult patients with iron deficiency anaemia
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Ahmad Basha, Mohamed Izham Mohamed Ibrahim, Anas Hamad, Prem Chandra, Nabil E. Omar, Mohamed Abdul Jaber Abdullah, Mahmood B. Aldapt, Radwa M. Hussein, Ahmed Mahfouz, Ahmad A. Adel, Hawraa M. Shwaylia, Yaslem Ekeibed, Rami AbuMousa, and Mohamed A. Yassin
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Medicine ,Science - Abstract
Background Iron deficiency anaemia (IDA) is a major health issues and common type of nutritional deficiency worldwide. For IDA treatment, intravenous (IV) iron is a useful therapy. Objective To determine the efficacy and cost-effectiveness (CE) of intravenous (IV) Ferric Carboxymaltose (FCM) versus IV Iron Sucrose (IS) in treating IDA. Data sources Electronic medical record i.e. Cerner® system. Target population Adults patients with iron deficiency anaemia. Time horizon A 12-month period (01/01/2018–31/12/2018). Perspective Hamad Medical Corporation (HMC, a public hospital). Intervention IV Ferric Carboxymaltose versus IV Iron Sucrose. Outcome measures With regard to responses to treatment i.e., efficacy of treatment with FCM & IS in IDA patients, hemoglobin (Hgb), ferritin, and transferrin saturation (TSAT) levels were the primary outcomes. Additionally, the researchers also collected levels of iron, platelet, white blood cell (WBC), red blood cell (RBC), mean corpuscular hemoglobin (MCH), and mean corpuscular volume (MCV). The costs i.e. resources consumed (obtained from NCCCR-HMC) and the CE of FCM versus IS were the secondary outcomes. Results of base-case analysis There was a significant improvement in Hgb, RBC and MCH levels in the IS group than the FCM group. The overall cost of IS therapy was significantly higher than FCM. The medication cost for FCM was approximately 6.5 times higher than IS, nonetheless, it is cheaper in terms of bed cost and nursing cost. The cost effectiveness (CE) ratio illustrated that FCM and IS were significantly different in terms of Hgb, ferritin and MCH levels. Further, Incremental Cost Effectiveness Ratio (ICER) indicated that further justifications and decisions need to be made for FCM when using Hgb, iron, TSAT, MCH and MCV levels as surrogate outcomes. Results of sensitivity analysis Not applicable. Limitations The study did not consider the clinical or humanistic outcome. Conclusions The higher cost of FCM versus IS can be offset by savings in healthcare personnel time and bed space. ICER indicated that further justifications and decisions need to be made for FCM when using Hgb, iron, TSAT, MCH and MCV levels as surrogate outcomes.
- Published
- 2021
13. Genetic diversity, antifungal evaluation and molecular docking studies of Cu-chitosan nanoparticles as prospective stem rust inhibitor candidates among some Egyptian wheat genotypes
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Hanaa S. Omar, Abdullah Al Mutery, Neama H. Osman, Nour El-Houda A. Reyad, and Mohamed A. Abou-Zeid
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Medicine ,Science - Abstract
Wheat has a remarkable importance among cereals worldwide. Wheat stem and leaf rust constitute the main threats that destructively influence grain quality and yield production. Pursuing resistant cultivars and developing new genotypes including resistance genes is believed to be the most effective tool to overcome these challenges. This study is the first to use molecular markers to evaluate the genetic diversity of eighteen Egyptian wheat genotypes. Moreover, the molecular docking analysis was also used to assess the Cu-chitosan nanoparticle (CuChNp) treatment and its mode of action in disease control management. The tested genotypes were categorized into two main cluster groups depending on the similarity matrix, i.e the most resistant and susceptible genotypes to stem and leaf rust races. The results of SCoT primers revealed 140 polymorphic and 5 monomorphic bands with 97% polymorphism. While 121 polymorphic and 74 monomorphic bands were scored for SRAP primers (99% polymorphism). The genotypes Sakha 94, Sakha 95, Beni Sweif 4, Beni Sweif 7, Sohag 4 and Sohag 5 were resistant, while Giza 160 was highly susceptible to all stem rust races at the seedling stage. However, in the adult stage, the 18 genotypes were evaluated for stem and leaf rust-resistant in two different locations, i.e. Giza and Sids. In this investigation, for the first time, the activity of CuChNp was studied and shown to have the potential to inhibit stem and leaf rust in studied Egyptian wheat genotypes. The Spraying Cu-chitosan nanoparticles showed that the incubation and latent periods were increased in treated plants of the tested genotypes. Molecular modeling revealed their activity against the stem and leaf rust development. The SRAP and SCoT markers were highly useful tools for the classification of the tested wheat genotypes, although they displayed high similarities at the morphological stage. However, Cu-chitosan nanoparticles have a critical and effective role in stem and leaf rust disease control.
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- 2021
14. Methionine-induced regulation of growth, secondary metabolites and oxidative defense system in sunflower (Helianthus annuus L.) plants subjected to water deficit stress
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Gull Mehak, Nudrat Aisha Akram, Muhammad Ashraf, Prashant Kaushik, Mohamed A. El-Sheikh, and Parvaiz Ahmad
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Medicine ,Science - Abstract
Optimum water availability at different growth stages is one the major prerequisites of best growth and yield production of plants. Exogenous application of plant growth regulators considered effective for normal functioning of plants under water-deficit conditions. A study was conducted to examine the influence of exogenously applied L-methionine on sunflower (Helianthus annuus L.) plants grown under water-deficit conditions. Twenty-five-day old seedlings of four sunflower cultivars, FH331, FH572, FH652 and FH623 were exposed to control (100% F.C.) and drought stress (60% F.C.) conditions. After 30-day of drought stress, L-methionine (Met; 20 mg/L) was applied as a foliar spray to control and drought stressed plants. Water deficit stress significantly reduced shoot fresh and dry weights shoot and root lengths, and chlorophyll a content in all four cultivars. While a significant increase was observed due to water deficiency in relative membrane permeability (RMP), malondialdehyde (MDA), total soluble proteins (TSP), total soluble sugars (TSS), ascorbic acid (AsA) and activity of peroxidase (POD). Although, exogenously applied Met was effective in decreasing RMP, MDA and H2O2 contents, it increased the shoot fresh weight, shoot length, chlorophyll a, chlorophyll a/b ratio, proline contents and the activities of SOD, POD and CAT enzymes in all four cultivars under water deficit stress. No change in AsA and total phenolics was observed due to foliar-applied Met under water stress conditions. Of all sunflower cultivars, cv. FH-572 was the highest and cv. FH-652 the lowest of all four cultivars in shoot fresh and dry weights as well as shoot length under drought stress conditions. Overall, foliar applied L-methionine was effective in improving the drought stress tolerance of sunflower plants that was found to be positively associated with Met induced improved growth attributes and reduced RMP, MDA and H2O2 contents under water deficit conditions.
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- 2021
15. EGYVIR: An immunomodulatory herbal extract with potent antiviral activity against SARS-CoV-2
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Wael H. Roshdy, Helmy A. Rashed, Ahmed Kandeil, Ahmed Mostafa, Yassmin Moatasim, Omnia Kutkat, Noura M. Abo Shama, Mokhtar R. Gomaa, Ibrahim H. El-Sayed, Nancy M. El Guindy, Amal Naguib, Ghazi Kayali, Mohamed A. Ali, and Dong-Yan Jin
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Medicine ,Science - Abstract
Due to the challenges for developing vaccines in devastating pandemic situations of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), developing and screening of novel antiviral agents are peremptorily demanded. Herein, we developed EGYVIR as a potent immunomodulatory herbal extract with promising antiviral activity against SARS-CoV-2. It constitutes of a combination of black pepper extract with curcumin extract. The antiviral effect of EGYVIR extract is attributed to the two key phases of the disease in severe cases. First, the inhibition of the nuclear translocation of NF-kβ p50, attenuating the SARS-CoV-2 infection-associated cytokine storm. Additionally, the EGYVIR extract has an in vitro virucidal effect for SARS-CoV-2. The in vitro study of EGYVIR extract against SARS-CoV-2 on Huh-7 cell lines, revealed the potential role of NF-kβ/TNFα/IL-6 during the infection process. EGYVIR antagonizes the NF-kβ pathway in-silico and in-vitro studies. Consequently, it has the potential to hinder the release of IL-6 and TNFα, decreasing the production of essential cytokines storm elements.
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- 2020
16. Evolution of pneumococcal serotype epidemiology in Botswana following introduction of 13-valent pneumococcal conjugate vaccine.
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Patel, Sweta, Shaik-Dasthagirisaheb, Yazdani, Congdon, Morgan, Young, Rebecca, Patel, Mohamed, Mazhani, Tiny, Boiditswe, Sefelani, Leburu, Tirayaone, Lechiile, Kwana, Arscott-Mills, Tonya, Steenhoff, Andrew, Feemster, Kristen, Shah, Samir, Cunningham, Coleen, Pelton, Stephen, and Kelly, Matthew
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Bacterial Typing Techniques ,Botswana ,Female ,Humans ,Infant ,Male ,Nasopharynx ,Phylogeny ,Pneumococcal Infections ,Pneumococcal Vaccines ,Population Surveillance ,Serotyping ,Streptococcus pneumoniae - Abstract
Pneumococcal conjugate vaccines reduce the burden of invasive pneumococcal disease, but the sustained effect of these vaccines can be diminished by an increase in disease caused by non-vaccine serotypes. To describe pneumococcal serotype epidemiology in Botswana following introduction of 13-valent pneumococcal conjugate vaccine (PCV-13) in July 2012, we performed molecular serotyping of 268 pneumococcal strains isolated from 221 children between 2012 and 2017. The median (interquartile range) age of the children included in this analysis was 6 (3,12) months. Fifty-nine percent of the children had received at least one dose of PCV-13 and 35% were fully vaccinated with PCV-13. While colonization by vaccine serotypes steadily declined following PCV-13 introduction, 25% of strains isolated more than 3 years after vaccine introduction were PCV-13 serotypes. We also observed an increase in colonization by non-vaccine serotypes 21 and 23B, which have been associated with invasive pneumococcal disease and antibiotic resistance in other settings.
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- 2022
17. Sequencing and assembly of the Egyptian buffalo genome.
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El-Khishin, Dina, Ageez, Amr, Saad, Mohamed, Ibrahim, Amr, Shokrof, Moustafa, Hassan, Laila, and Abouelhoda, Mohamed
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Animals ,Buffaloes ,Genome ,Molecular Sequence Annotation ,Whole Genome Sequencing - Abstract
Water buffalo (Bubalus bubalis) is an important source of meat and milk in countries with relatively warm weather. Compared to the cattle genome, a little has been done to reveal its genome structure and genomic traits. This is due to the complications stemming from the large genome size, the complexity of the genome, and the high repetitive content. In this paper, we introduce a high-quality draft assembly of the Egyptian water buffalo genome. The Egyptian breed is used as a dual purpose animal (milk/meat). It is distinguished by its adaptability to the local environment, quality of feed changes, as well as its high resistance to diseases. The genome assembly of the Egyptian water buffalo has been achieved using a reference-based assembly workflow. Our workflow significantly reduced the computational complexity of the assembly process, and improved the assembly quality by integrating different public resources. We also compared our assembly to the currently available draft assemblies of water buffalo breeds. A total of 21,128 genes were identified in the produced assembly. A list of milk virgin-related genes; milk pregnancy-related genes; milk lactation-related genes; milk involution-related genes; and milk mastitis-related genes were identified in the assembly. Our results will significantly contribute to a better understanding of the genetics of the Egyptian water buffalo which will eventually support the ongoing breeding efforts and facilitate the future discovery of genes responsible for complex processes of dairy, meat production and disease resistance among other significant traits.
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- 2020
18. Versatile properties of Opuntia ficus-indica (L.) Mill. flowers: In vitro exploration of antioxidant, antimicrobial, and anticancer activities, network pharmacology analysis, and In-silico molecular docking simulation.
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Mwaheb, Mai Ali, Reda, Nashwa Mohamed, El-Wetidy, Mohammad S., Sheded, Asmaa H., Al-Otibi, Fatimah, Al-Hamoud, Gadah A., Said, Mohamed A., and Aidy, Esraa A.
- Abstract
Opuntia ficus-indica (L.) Mill. has been used in folk medicine against several diseases. The objectives of the present study were to investigate the chemical composition of the methanolic extract of O. ficus-indica (L.) Mill. flowers and their antioxidant, antimicrobial, and anticancer properties. Besides, network pharmacology and molecular docking were used to explore the potential antitumor effect of active metabolites of O. ficus-indica (L.) Mill. against breast and liver cancer. The results revealed many bioactive components known for their antimicrobial and anticancer properties. Furthermore, scavenging activity was obtained, which indicated strong antioxidant properties. The plant extract exhibited antimicrobial activities against Aspergillus brasiliensis (MIC of 0.625 mg/mL), Candida albicans, Saccharomyces cerevisiae, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa at MICs of 1.25 mg/mL. The results revealed proapoptotic activities of the O. ficus-indica (L.) Mill. extract against MCF7, MDA-MB-231, and HepG2 cell lines, where it induced significant early apoptosis and cell cycle arrest at sub-G1 phases, besides increasing the expression levels of p53, cyclin D1, and caspase 3 (p <0.005). The network pharmacology and molecular docking analysis revealed that the anticancer components of O. ficus-indica (L.) Mill. flower extract targets the PI3K-Akt pathway. More investigations might be required to test the mechanistic pathways by which O. ficus-indica (L.) Mill. might exhibit its biological activities in vivo. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Genetic and pathogenic potential of highly pathogenic avian influenza H5N8 viruses from live bird markets in Egypt in avian and mammalian models.
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Moatasim, Yassmin, Aboulhoda, Basma Emad, Gomaa, Mokhtar, El Taweel, Ahmed, Kutkat, Omnia, Kamel, Mina Nabil, El Sayes, Mohamed, GabAllah, Mohamed, Elkhrsawy, Amany, AbdAllah, Hend, Kandeil, Ahmed, Ali, Mohamed Ahmed, Kayali, Ghazi, and El-Shesheny, Rabeh
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WHOLE genome sequencing ,AVIAN influenza A virus ,MIGRATORY birds ,VACCINE effectiveness ,HEMAGGLUTININ ,AVIAN influenza - Abstract
Since its first isolation from migratory birds in Egypt in 2016, highly pathogenic avian influenza (HPAI) H5N8 has caused several outbreaks among domestic poultry in various areas of the country affecting poultry health and production systems. However, the genetic and biological properties of the H5N8 HPAI viruses have not been fully elucidated yet. In this study, we aimed to monitor the evolution of circulating H5N8 viruses and identify the pathogenicity and mammalian adaptation in vitro and in vivo. Three H5N8 HPAI viruses were used in this study and were isolated in 2021–2022 from poultry and wild birds during our routine surveillance. RNA extracts were subjected to full genome sequencing. Genetic, phylogenetic, and antigenic analyses were performed to assess viral characteristics and similarities to previously isolated viruses. Phylogenetic analysis showed that the hemagglutinin genes of the three isolates belonged to clade 2.3.4.4b and grouped with the 2019 viruses from G3 with high similarity to Russian and European lineages. Multiple basic amino acids were observed at cleavage sites in the hemagglutinin proteins of the H5N8 isolates, indicating high pathogenicity. In addition, several mutations associated with increased virulence and polymerase activity in mammals were observed. Growth kinetics assays showed that the H5N8 isolate is capable of replicating efficiently in mammalian cells lines. In vivo studies were conducted in SPF chickens (White Leghorn), mice, and hamsters to compare the virological characteristics of the 2022 H5N8 isolates with previous H5N8 viruses isolated in 2016 from the first introduction. The H5N8 viruses caused lethal infection in all tested chickens and transmitted by direct contact. However, we showed that the 2016 H5N8 virus causes a higher mortality in chickens compared to 2022 H5N8 virus. Moreover, the 2022 virus can replicate efficiently in hamsters and mice without preadaptation causing systemic infection. These findings underscore the need for continued surveillance of H5 viruses to identify circulating strains, determine the commercial vaccine's effectiveness, and identify zoonotic potential. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Randomized controlled trial parallel-group on optimizing community pharmacist's care for the elderly: The influence of WhatsApp-Email delivered clinical case scenarios.
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Mohamed Ibrahim, Osama, Al Mazrouei, Nadia, Elnour, A. A., Ibrahim, Rana, H. Abdel-Qader, Derar, Mohamed El Amin Ibrahim Hamid, Rowida, Menon, Vineetha, Saeed, Ali Awadallah, Fatehi Abdalla, Sami, T. Alsulami, Fahad, Alqarni, Yousef Saeed, and Mohammed, Abuelnor
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DRUGSTORES , *RANDOMIZED controlled trials , *ELDER care , *COST control , *PHARMACISTS , *OLDER patients , *MEDICATION safety - Abstract
Background: Drug-related problems (DRPs) significantly threaten the safety of the elderly. In order to improve pharmacists' ability to minimize these events, novel educational interventions that consider the current challenges in clinical practice are crucial. Objectives: The primary objective is to assess the impact of two unique educational interventions on pharmacists' ability to identify DRPs. Method: A total of 127 community pharmacies in the United Arab Emirates (UAE) were recruited and randomly allocated to one of three arms using a 1:1:1 allocation ratio. While a series of clinical case scenarios (N = 24) related to elderly care were established and validated and sent to pharmacists in Active Group A over a 3-month period, lengthy research articles focused on medication safety in elderly were emailed to pharmacists in Active Group B. The control group pharmacist received no intervention. Then, pharmacists self-reported the number, categories, and severity of DRPs and pharmacist recommendations. Results: The incidence of DRPs identified by pharmacists was 10.8% in Active Group A, 2.0% in the Control Group (p = 0.011), and 3.8% in Active Group B (p = 0.014). A significant difference was observed in the proportion of DRP types between Active Group A and the Control Group. The most common DRPs in Active Group A were avoidable medication (14.7%) and untreated disease (9.2%). Pharmacists in Active Group A (37.2%) and Active Group B (32.3%) most commonly intervened by recommending the cessation of medication, while the most common intervention in the Control Group was recommending a decrease in dose (29.8%). The mean cost reduction per patient was highest in Active Group A (31.3 ±11.8 $), followed by Active Group B (20.8 ±8.6 $) and the Control Group (19.6 ±9.5 $). The mean time needed to resolve a DRP was shortest in Active Group A (7.3 ±3.5 minutes), followed by Active Group B (9.8 ±4.2 minutes) and the Control Group (9.8 ±5.7 minutes). Conclusion: Using WhatsApp to deliver clinical scenarios was effective in improving pharmacists' ability to identify and address DRPs in elderly patients, resulting in faster resolution and higher cost savings. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Advanced design and Engi-economical evaluation of an automatic sugarcane seed cutting machine based RGB color sensor.
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Elwakeel, Abdallah Elshawadfy, Nasrat, Loai S., Badawy, Mohamed Elshahat, Elzein, I. M., Mahmoud, Mohamed Metwally, Kitmo, Hussein, Mahmoud M., Hussein, Hany S., El-Messery, Tamer M., Nyambe, Claude, Elsayed, Salah, and Ourapi, Manar A.
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COMPUTER vision ,CUTTING machines ,MACHINE learning ,MACHINE performance ,OPERATING costs - Abstract
There are many problems related to the use of machine learning and machine vision technology on a commercial scale for cutting sugarcane seeds. These obstacles are related to complex systems and the way the farmers operate them, the possibility of damage to the buds during the cleaning process, and the high cost of such technology. In order to address these issues, a set of RGB color sensors was used to develop an automated sugarcane seed cutting machine (ASSCM) capable of identifying the buds that had been manually marked with a unique color and then cutting them mechanically, and the sugarcane seed exit chute was provided with a sugarcane seed monitoring unit. The machine's performance was evaluated by measuring the damage index at sugarcane stalk diameters of 2.03, 2.72, 3.42, and 3.94 cm. where two different types of rotary saw knives had the same diameter of 7.0 in/180 mm the two knives had 30 and 80 teeth, also we used five cutting times of 1000, 1500, 2000, 2500, and 3000 ms. All tests were done at a fixed cutting speed of 12000 rpm. In addition, the machine's performance was evaluated by conducting an economic analysis. The obtained results showed that the most damage index values were less than 0.00 for all cutting times and sugarcane stalk diameters under testing, while the DI values were equal zero (partial damage) for sugarcane stalk diameter of 3.42 cm at cutting times of 2000 ms and 2500 ms, in addition to the DI values being equal zero (extreme damage) for sugarcane stalk diameter of 3.94 cm at cutting times of 1500 ms and 2000 ms. The economic analysis showed that the total cost of sugarcane seeds per hectare is 70.865 USD. In addition, the ASSCM can pay for itself in a short period of time. The payback time is 0.536 years, which means that the ASSCM will save enough money to pay for itself in about 6.43 months. Finally, we suggest using a rotary saw knife with 80 teeth and a cutting time of 2000 ms to cut sugarcane stacks with an average diameter of 2.72 cm. This will result in higher performance and lower operating costs for the ASSCM. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Case-control study: Unveiling human polyomaviruses and papillomavirus in Egyptian colorectal cancer patients
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Darwish, Marwa K., primary, Allayeh, Abdou K., additional, Ahmed, Amr E., additional, Abdelmaksoud, Mohamed D. E., additional, Alkhalil, Samia S., additional, Ageeli Hakami, Mohammed, additional, Hassan, Ahmed, additional, Mohamed Mahmoud Farrag, Haiam, additional, Saif Eldin M. Mohamed, Samah, additional, and Gouda, Weaam, additional
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- 2024
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23. Investigating the dynamics of tax evasion and revenue leakage in somali customs
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Nor, Mohamed Ibrahim, primary and Mohamed, Abdinur Ali, additional
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- 2024
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24. The Kanyakla study: Randomized controlled trial of a microclinic social network intervention for promoting engagement and retention in HIV care in rural western Kenya
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Hickey, Matthew D, Ouma, Gor B, Mattah, Brian, Pederson, Ben, DesLauriers, Nicholas R, Mohamed, Pamela, Obanda, Joyce, Odhiambo, Abdi, Njoroge, Betty, Otieno, Linda, Zoughbie, Daniel E, Ding, Eric L, Fiorella, Kathryn J, Bukusi, Elizabeth A, Cohen, Craig R, Geng, Elvin H, and Salmen, Charles R
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Biomedical and Clinical Sciences ,Health Services and Systems ,Public Health ,Health Sciences ,Clinical Sciences ,Clinical Research ,Clinical Trials and Supportive Activities ,Prevention ,Pediatric AIDS ,HIV/AIDS ,Pediatric ,Comparative Effectiveness Research ,Mental Health ,Behavioral and Social Science ,Good Health and Well Being ,Adolescent ,Adult ,Anti-HIV Agents ,Female ,HIV ,HIV Infections ,Humans ,Kenya ,Male ,Middle Aged ,Pilot Projects ,Prospective Studies ,Social Networking ,Social Stigma ,Social Support ,Young Adult ,General Science & Technology - Abstract
BackgroundExisting social relationships are a potential source of "social capital" that can enhance support for sustained retention in HIV care. A previous pilot study of a social network-based 'microclinic' intervention, including group health education and facilitated HIV status disclosure, reduced disengagement from HIV care. We conducted a pragmatic randomized trial to evaluate microclinic effectiveness.MethodsIn nine rural health facilities in western Kenya, we randomized HIV-positive adults with a recent missed clinic visit to either participation in a microclinic or usual care (NCT02474992). We collected visit data at all clinics where participants accessed care and evaluated intervention effect on disengagement from care (≥90-day absence from care after a missed visit) and the proportion of time patients were adherent to clinic visits ('time-in-care'). We also evaluated changes in social support, HIV status disclosure, and HIV-associated stigma.ResultsOf 350 eligible patients, 304 (87%) enrolled, with 154 randomized to intervention and 150 to control. Over one year of follow-up, disengagement from care was similar in intervention and control (18% vs 17%, hazard ratio 1.03, 95% CI 0.61-1.75), as was time-in-care (risk difference -2.8%, 95% CI -10.0% to +4.5%). The intervention improved social support for attending clinic appointments (+0.4 units on 5-point scale, 95% CI 0.08-0.63), HIV status disclosure to close social supports (+0.3 persons, 95% CI 0.2-0.5), and reduced stigma (-0.3 units on 5-point scale, 95% CI -0.40 to -0.17).ConclusionsThe data from our pragmatic randomized trial in rural western Kenya are compatible with the null hypothesis of no difference in HIV care engagement between those who participated in a microclinic intervention and those who did not, despite improvements in proposed intervention mechanisms of action. However, some benefit or harm cannot be ruled out because the confidence intervals were wide. Results differ from a prior quasi-experimental pilot study, highlighting important implementation considerations when evaluating complex social interventions for HIV care.Trial registrationClinical trial number: NCT02474992.
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- 2021
25. Identification of novel regulators of dendrite arborization using cell type-specific RNA metabolic labeling.
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Aboukilila, Mohamed Y, Sami, Josephine D, Wang, Jingtian, England, Whitney, Spitale, Robert C, and Cleary, Michael D
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Dendrites ,Animals ,Animals ,Genetically Modified ,Drosophila melanogaster ,Cytosine ,Polynucleotide Adenylyltransferase ,Polypyrimidine Tract-Binding Protein ,Drosophila Proteins ,Nuclear Proteins ,RNA ,Deoxyuracil Nucleotides ,Staining and Labeling ,Gene Expression Regulation ,Developmental ,RNA Interference ,Larva ,Sensory Receptor Cells ,Neurogenesis ,Loss of Function Mutation ,RNA-Seq ,Genetically Modified ,Gene Expression Regulation ,Developmental ,General Science & Technology - Abstract
Obtaining neuron transcriptomes is challenging; their complex morphology and interconnected microenvironments make it difficult to isolate neurons without potentially altering gene expression. Multidendritic sensory neurons (md neurons) of Drosophila larvae are commonly used to study peripheral nervous system biology, particularly dendrite arborization. We sought to test if EC-tagging, a biosynthetic RNA tagging and purification method that avoids the caveats of physical isolation, would enable discovery of novel regulators of md neuron dendrite arborization. Our aims were twofold: discover novel md neuron transcripts and test the sensitivity of EC-tagging. RNAs were biosynthetically tagged by expressing CD:UPRT (a nucleobase-converting fusion enzyme) in md neurons and feeding 5-ethynylcytosine (EC) to larvae. Only CD:UPRT-expressing cells are competent to convert EC into 5-ethynyluridine-monophosphate which is subsequently incorporated into nascent RNA transcripts. Tagged RNAs were purified and used for RNA-sequencing. Reference RNA was prepared in a similar manner using 5-ethynyluridine (EUd) to tag RNA in all cells and negative control RNA-seq was performed on "mock tagged" samples to identify non-specifically purified transcripts. Differential expression analysis identified md neuron enriched and depleted transcripts. Three candidate genes encoding RNA-binding proteins (RBPs) were tested for a role in md neuron dendrite arborization. Loss-of-function for the m6A-binding factor Ythdc1 did not cause any dendrite arborization defects while RNAi of the other two candidates, the poly(A) polymerase Hiiragi and the translation regulator Hephaestus, caused significant defects in dendrite arborization. This work provides an expanded view of transcription in md neurons and a technical framework for combining EC-tagging with RNA-seq to profile transcription in cells that may not be amenable to physical isolation.
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- 2020
26. Illicit opioid use following changes in opioids prescribed for chronic non-cancer pain
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Coffin, Phillip O, Rowe, Christopher, Oman, Natalie, Sinchek, Katie, Santos, Glenn-Milo, Faul, Mark, Bagnulo, Rita, Mohamed, Deeqa, and Vittinghoff, Eric
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Pharmacology and Pharmaceutical Sciences ,Biomedical and Clinical Sciences ,Clinical Sciences ,Drug Abuse (NIDA only) ,Chronic Pain ,Prescription Drug Abuse ,Clinical Research ,Substance Misuse ,Pain Research ,Evaluation of treatments and therapeutic interventions ,6.1 Pharmaceuticals ,Good Health and Well Being ,Analgesics ,Opioid ,Cohort Studies ,Drug Prescriptions ,Female ,Heroin ,Humans ,Illicit Drugs ,Male ,Middle Aged ,Opioid-Related Disorders ,Pain Management ,Primary Health Care ,Retrospective Studies ,San Francisco ,General Science & Technology - Abstract
BackgroundAfter decades of increased opioid pain reliever prescribing, providers are rapidly reducing prescribing. We hypothesized that reduced access to prescribed opioid pain relievers among patients previously reliant upon opioid pain relievers would result in increased illicit opioid use.Methods and findingsWe conducted a retrospective cohort study among 602 publicly insured primary care patients who had been prescribed opioids for chronic non-cancer pain for at least three consecutive months in San Francisco, recruited through convenience sampling. We conducted a historical reconstruction interview and medical chart abstraction focused on illicit substance use and opioid pain reliever prescriptions, respectively, from 2012 through the interview date in 2017-2018. We used a nested-cohort design, in which patients were classified, based on opioid pain reliever dose change, into a series of nested cohorts starting with each follow-up quarter. Using continuation-ratio models, we estimated associations between opioid prescription discontinuation or 30% increase or decrease in dose, relative to no change, and subsequent frequency of heroin and non-prescribed opioid pain reliever use, separately. Models controlled for demographics, clinical and behavioral characteristics, and past use of heroin or non-prescribed opioid pain relievers. A total of 56,372 and 56,484 participant-quarter observations were included from the 597 and 598 participants available for analyses of heroin and non-prescribed opioid pain reliever outcomes, respectively. Participants discontinued from prescribed opioids were more likely to use heroin (Adjusted Odds Ratio (AOR) = 1.57, 95% CI: 1.25-1.97) and non-prescribed opioid pain relievers (AOR = 1.75, 1.45-2.11) more frequently in subsequent quarters compared to participants with unchanged opioid prescriptions. Participants whose opioid pain reliever dose increased were more likely to use heroin more frequently (AOR = 1.67, 1.32-2.12). Results held throughout sensitivity analyses. The main limitations were the observational nature of results and limited generalizability beyond safety-net settings.ConclusionsDiscontinuation of prescribed opioid pain relievers was associated with more frequent non-prescribed opioid pain reliever and heroin use; increased dose was also associated with more frequent heroin use. Clinicians should be aware of these risks in determining pain management approaches.
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- 2020
27. Syndesmotic fixation in Weber B ankle fractures: A systematic review
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Lim, Brandon, primary, Shaalan, Mohamed, additional, O’hEireamhoin, Sven, additional, and Lyons, Frank, additional
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- 2024
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28. Numerical investigation of the impact of temperature-dependent thermal conductivity and viscosity on thermo-particle heat transfer through stationary sphere and using plume
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Nabwey, Hossam A., primary, Ashraf, Muhammad, additional, Khan, Anwar, additional, Abbas, Amir, additional, Rashad, A. M., additional, Abdelrahman, Zeinab M., additional, Ahmed Hassan, Ehssan, additional, and Awad, Mohamed M., additional
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- 2024
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29. Functional analysis of MMR gene VUS from potential Lynch syndrome patients
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Mahdouani, Marwa, primary, Zhuri, Drenushe, additional, Sezginer Guler, Hazal, additional, Hmida, Dorra, additional, Sana, Mokni, additional, Azaza, Mohamed, additional, Ben Said, Mariem, additional, Masmoudi, Saber, additional, Hmila, Fahmi, additional, Youssef, Sabri, additional, Ben Sghaier, Rihab, additional, Brieger, Angela, additional, Zeuzem, Stefan, additional, Saad, Ali, additional, Gurkan, Hakan, additional, Yalcintepe, Sinem, additional, Gribaa, Moez, additional, and Plotz, Guido, additional
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- 2024
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30. Clinicopathological and prognostic implications of EGFR mutations subtypes in Moroccan non-small cell lung cancer patients: A first report
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Boukansa, Sara, primary, Mouhrach, Ismail, additional, El Agy, Fatima, additional, El Bardai, Sanae, additional, Bouguenouch, Laila, additional, Serraj, Mounia, additional, Amara, Bouchra, additional, Ouadnouni, Yassine, additional, Smahi, Mohamed, additional, Alami, Badreeddine, additional, Mellas, Nawfel, additional, Benbrahim, Zineb, additional, and El Fatemi, Hinde, additional
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- 2024
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31. Novel insights into immune stress markers associated with myxosporeans gill infection in Nile tilapia (molecular and immunohistochemical studies)
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Ramadan, Reem M., primary, Mahdy, Olfat A., additional, El-Saied, Mohamed A., additional, Mohammed, Faten F., additional, and Salem, Mai A., additional
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- 2024
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32. Health risk factors, status and service utilisation of adults in primary health care settings in Qatar: The HEALTHSIGHT study protocol
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Syed, Mohamed Ahmed, primary, Hassan, Mariam, additional, Veettil, Shajitha Thekke, additional, Marji, Tamara, additional, Khudadad, Hanan, additional, El Kaissi, Dana Bilal, additional, Zainel, Abduljaleel Abdullatif, additional, Ahmed Mohamed, Hafiz, additional, Mathew, Bindya, additional, Syed, Muslim Abbas, additional, and Alnuaimi, Ahmed Sameer, additional
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- 2024
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33. Evaluation of dental pulp stem cells response to flowable nano-hybrid dental composites: A comparative analysis
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Rady, Dina, primary, Albar, Nassreen, additional, Khayat, Waad, additional, Khalil, Mennatullah, additional, Raafat, Shereen, additional, Ramadan, Mohamed, additional, Saber, Shehabeldin, additional, and Shamel, Mohamed, additional
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- 2024
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34. Participatory epidemiology on major camel calf health and management problems in pastoral and semi-pastoral zones of Somali region, Ethiopia
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Hussein, Hassan Abdi, primary, Mohamed, Abdifetah, additional, and Ahmed, Juhar Mohamed, additional
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- 2024
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35. Comparative effectiveness of cervical vs thoracic spinal-thrust manipulation for care of cervicogenic headache: A randomized controlled trial
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Nambi, Gopal, primary, Alghadier, Mshari, additional, Eltayeb, Mudathir Mohamedahmed, additional, Aldhafian, Osama R., additional, Saleh, Ayman K., additional, Alsanousi, Nesreen, additional, Albarakati, Alaa Jameel A., additional, Omar, Mohamed A., additional, Ibrahim, Mohamed Nagah Ahmed, additional, Attallah, Abdehamid A., additional, Ismail, Mohammed Abdelgwad, additional, and Elfeshawy, Mohamed, additional
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- 2024
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36. A new automatic sugarcane seed cutting machine based on internet of things technology and RGB color sensor
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Yang, Liu, primary, Nasrat, Loai S., additional, Badawy, Mohamed E., additional, Mbadjoun Wapet, Daniel Eutyche, additional, Ourapi, Manar A., additional, El-Messery, Tamer M., additional, Aleksandrova, Irina, additional, Mahmoud, Mohamed Metwally, additional, Hussein, Mahmoud M., additional, and Elwakeel, Abdallah E., additional
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- 2024
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37. A modified supraorbital surgical approach for enucleation- exenteration in dromedary camels (camelus dromedarius): Clinical study.
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Marzok, Mohamed, Nazih, Mohamed A., Almubarak, Adel I., . Al-thnaian, Thnaian A, Alkhodair, Khalid M., Tharwat, Mohamed, and El-Sherif, Mohamed W.
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ENUCLEATION of the eye , *OPHTHALMIC surgery , *CAMELS , *NERVE block , *VETERINARY hospitals - Abstract
Enucleation and exenteration are widely utilized ophthalmic procedures in veterinary field. Enucleation in camels is like other large animals, typically performed under the influence of heavy sedation and loco-regional analgesia. The aim of the current study was to introduce a new surgical approach to enucleate the eye of camels through supraorbital fossa approach. for that purpose, the technique was applied to seven camels referred to the King-fisal teaching veterinary hospital for unilateral enucleation. Assessment of applicability, safety and feasibility of this technique was done. All procedures were performed in the kush (sitting) position under the influence of heavy sedation with Xylazine HCl in combination with retrobulbar nerve block. A "C" shaped skin incision was made in the skin and fascia of the supraorbital fossa to enter the orbital cavity, after which the periorbital fat was gripped, dissected and removed. Bleeding controlled by electrocautery and visible large blood vessels were ligated. After ligation the optic nerve and ophthalmic blood vessels, the eyeball was dissected sharply and freed from the orbital bony attachment. Finally, the orbital fascia and skin were sutured with simple interrupted pattern separately. The approach proved successful in all camels, with the enucleation procedure being both feasible and easily performed. The mean surgical time was approximately 46.6±12.4 minutes. The minimal occurrence of short and long-term complications was encouraging, and the cosmetic outcomes were notably improved. The supraorbital approach is a safe and effective technique for camel ophthalmic surgery, showing advantages in exposure and minimal complications. Further research is needed for validation and broader clinical applications. [ABSTRACT FROM AUTHOR]
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- 2024
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38. Preventive effects of a nutraceutical mixture of berberine, citrus and apple extracts on metabolic disturbances in Zucker fatty rats.
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Siliman Misha, Mohamed, Destrumelle, Sandrine, Le Jan, Dylan, Mansour, Nahla M., Fizanne, Lionel, Ouguerram, Khadija, Desfontis, Jean-Claude, and Mallem, Mohamed-Yassine
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LABORATORY rats , *METABOLIC disorders , *ALKALOIDS , *BERBERINE , *WEIGHT loss , *WEIGHT gain , *SHORT-chain fatty acids , *ORANGES , *APPLES - Abstract
Background: The prevention of obesity represents a major health and socio-economic challenge. Nutraceuticals are regularly highlighted for their beneficial effects in preventing the metabolic disturbances associated with obesity. However, few studies have described the combined action of nutraceutical mixtures combining polyphenols with alkaloids. Objective: The aim of this study was to evaluate the effects of long-term dietary supplementation with a mixture of Berberine, Citrus and Apple extracts (BCA) in the primary prevention of obesity and its metabolic and vascular complications in the obese Zucker rat, a spontaneous model of genetic obesity and insulin resistance. Methods: Sixteen 8-week-old obese Zucker male rats were randomly divided into two groups: all rats received oral gavage daily either with water, untreated obese (U-ObZ) or BCA (BCA-ObZ) mixture for thirteen weeks. Morphological and metabolic parameters were measured along the study. Cumulative concentration-response curves to insulin, acetylcholine and phenylephrine were determined on isolated thoracic aorta. Colon permeability measurements were performed using the Ussing chamber technique. Fecal samples collected at the beginning and the end of the protocol were used as a template for amplification of the V3-V4 region of the 16S rDNA genes. Results: BCA supplementation reduced weight gain (p<0.05) and food intake (p<0.05) in the BCA-ObZ group rats compared to the U-ObZ group rats. It also improved glucose tolerance (p<0.001) and decreased fasting insulin and Homeostasis model assessment index (p<0.05). Through ex vivo experiments, the BCA mixture enhanced significantly aortic insulin relaxation (p<0.01), reduced α1-adrenoceptor-mediated vasoconstriction (p<0.01), and decreased distal colon permeability. Moreover, short-chain fatty acid producers such as Bacteroides, Blautia, and Akkermansia were found to be increased by the BCA mixture supplementation. Conclusion: The results showed that a 13-week-supplementation with BCA mixture prevented weight gain and improved glucose metabolism in obese Zucker rats. We also demonstrated that BCA supplementation improved vascular function, colonic barrier permeability and gut microbiota profile. [ABSTRACT FROM AUTHOR]
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- 2024
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39. Code-mixing unveiled: Enhancing the hate speech detection in Arabic dialect tweets using machine learning models.
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Alhazmi, Ali, Mahmud, Rohana, Idris, Norisma, Mohamed Abo, Mohamed Elhag, and Eke, Christopher Ifeanyi
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HATE speech ,MACHINE learning ,AUTOMATIC speech recognition ,SOCIAL media ,VACUUM technology ,FEATURE extraction ,DIALECTS ,ARABIC language - Abstract
Technological developments over the past few decades have changed the way people communicate, with platforms like social media and blogs becoming vital channels for international conversation. Even though hate speech is vigorously suppressed on social media, it is still a concern that needs to be constantly recognized and observed. The Arabic language poses particular difficulties in the detection of hate speech, despite the considerable efforts made in this area for English-language social media content. Arabic calls for particular consideration when it comes to hate speech detection because of its many dialects and linguistic nuances. Another degree of complication is added by the widespread practice of "code-mixing," in which users merge various languages smoothly. Recognizing this research vacuum, the study aims to close it by examining how well machine learning models containing variation features can detect hate speech, especially when it comes to Arabic tweets featuring code-mixing. Therefore, the objective of this study is to assess and compare the effectiveness of different features and machine learning models for hate speech detection on Arabic hate speech and code-mixing hate speech datasets. To achieve the objectives, the methodology used includes data collection, data pre-processing, feature extraction, the construction of classification models, and the evaluation of the constructed classification models. The findings from the analysis revealed that the TF-IDF feature, when employed with the SGD model, attained the highest accuracy, reaching 98.21%. Subsequently, these results were contrasted with outcomes from three existing studies, and the proposed method outperformed them, underscoring the significance of the proposed method. Consequently, our study carries practical implications and serves as a foundational exploration in the realm of automated hate speech detection in text. [ABSTRACT FROM AUTHOR]
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- 2024
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40. Advanced control of split source inverter through finite control-set model predictive control for improved system performance.
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Abdelaleem, Ahmed, Ismeil, Mohamed A., Nasrallah, M., Mohamed, Essam E. M., and Ali, Ahmed Ismail M.
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PREDICTIVE control systems , *DISTRIBUTED power generation , *ELECTRIC power , *PREDICTION models - Abstract
Distributed power generation systems may necessitate connecting multiple independent energy sources that employ various converter topologies. A recent development in this field is the emergence of impedance source converters, offering the ability to deliver buck-boost functionality within a single stage. The split-source inverter (SSI) has been introduced as a novel choice in between this family. Many control strategies have emerged for electrical power systems control. Among the recent emerging controllers, model predictive control strategies have become an effective technique for control systems. Model predictive controllers (MPCs) offer a number of features compared to the conventional and counterpart models such as enhanced system response and improved system transients with reduced steady-state error. This research suggests a finite control-set MPC for three-phase single-stage SSI supporting a standalone load for remote area applications. Considering the proposed FCS-MPC, the output load current tracks its reference magnitude with minimized error. In addition, the proposed FCS-MPC enhances the proposed SSI system performance with a settling time of 10 μs, and approximately without overshoot in the output current. The system has been validated using Opal-RT OP-4510 and the power loss model of the inverter has been explained. In the end two comparisons have been presented to clarify the main points in the topology structure and the control technique. [ABSTRACT FROM AUTHOR]
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- 2024
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41. Clinical and economic impact of medication administration errors among neonates in neonatal intensive care units.
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Henry Basil, Josephine, Mohd Tahir, Nurul Ain, Menon Premakumar, Chandini, Mhd Ali, Adliah, Seman, Zamtira, Ishak, Shareena, See, Kwee Ching, Mohamed, Maslina, Lee, Khai Yin, Ibrahim, Nazedah Ain, Jegatheesan, Kokila Vani, and Mohamed Shah, Noraida
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MEDICATION errors ,NEONATAL intensive care units ,INTENSIVE care units ,ECONOMIC impact ,NEWBORN infants ,MULTIPLE regression analysis ,MEDICAL personnel ,FAILURE mode & effects analysis - Abstract
Despite efforts in improving medication safety, medication administration errors are still common, resulting in significant clinical and economic impact. Studies conducted using a valid and reliable tool to assess clinical impact are lacking, and to the best of our knowledge, studies evaluating the economic impact of medication administration errors among neonates are not yet available. Therefore, this study aimed to determine the potential clinical and economic impact of medication administration errors in neonatal intensive care units and identify the factors associated with these errors. A national level, multi centre, prospective direct observational study was conducted in the neonatal intensive care units of five Malaysian public hospitals. The nurses preparing and administering the medications were directly observed. After the data were collected, two clinical pharmacists conducted independent assessments to identify errors. An expert panel of healthcare professionals assessed each medication administration error for its potential clinical and economic outcome. A validated visual analogue scale was used to ascertain the potential clinical outcome. The mean severity index for each error was subsequently calculated. The potential economic impact of each error was determined by averaging each expert's input. Multinomial logistic regression and multiple linear regression were used to identify factors associated with the severity and cost of the errors, respectively. A total of 1,018 out of 1,288 (79.0%) errors were found to be potentially moderate in severity, while only 30 (2.3%) were found to be potentially severe. The potential economic impact was estimated at USD 27,452.10. Factors significantly associated with severe medication administration errors were the medications administered intravenously, the presence of high-alert medications, unavailability of a protocol, and younger neonates. Moreover, factors significantly associated with moderately severe errors were intravenous medication administration, younger neonates, and an increased number of medications administered. In the multiple linear regression analysis, the independent variables found to be significantly associated with cost were the intravenous route of administration and the use of high-alert medications. In conclusion, medication administration errors were judged to be mainly moderate in severity costing USD 14.04 (2.22–22.53) per error. This study revealed important insights and highlights the need to implement effective error reducing strategies to improve patient safety among neonates in the neonatal intensive care unit. [ABSTRACT FROM AUTHOR]
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- 2024
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42. Arthrospira platensis nanoparticles dietary supplementation improves growth performance, steroid hormone balance, and reproductive productivity of Nile tilapia (Oreochromis niloticus) broodstock.
- Author
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Mabrouk, Mohamed M., Ashour, Mohamed, Younis, Elsayed M., Abdel-Warith, Abdel-Wahab A., Bauomi, Mohamed A., Toutou, Mohamed M., Mansour, Ahmed I. A., Abdelaty, Basem S., Elokaby, Mohamed A., Davies, Simon J., El-Haroun, Ehab, and Gwida, Ahmed G. A.
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NILE tilapia , *DIETARY supplements , *STEROID hormones , *WEIGHT gain , *NANOPARTICLES , *SPAWNING , *FISH spawning - Abstract
This study evaluates the impact of dietary supplementation of the blue-green alga Arthrospira platensis NIOF17/003 nanoparticles (AN) on the growth performance, whole-body biochemical compositions, blood biochemistry, steroid hormonal, and fry production efficiency of Nile tilapia (Oreochromis niloticus) broodstock, during the spawning season. After a 21-day preparation period to equip the females and ensure that their ovaries were filled with eggs, mating between the mature females and males took place in a 3:1 ratio during a 14-day spawning cycle. A total of 384 tilapia broodstock 288 females and 96 males with an initial body weight of 450.53±0.75, were divided into four groups; AN0: a basal diet as a control group with no supplementation of Arthrospira platensis, and the other three groups (AN2, AN4, and AN6) were diets supplemented with nanoparticles of A. platensis at levels of 2, 4, and 6 g kg─1 diet, respectively. The results found that fish-fed group AN6 showed the highest significant differences in weight gain (WG), final weight (FW), feed conversion ratio (FCR), protein efficiency ratio (PER), and feed efficiency ratio (FER). Females fed the AN6 diet showed the highest significant fat content. Compared to the AN0 group, fish fed on the supplemented diets showed significant improvement (p < 0.05) in triglyceride, glucose, and aspartate aminotransferase (AST). A gradual increase in AN inclusion level resulted in a gradual increase in the concentrations of luteinizing hormone (LH), and follicle-stimulating hormone (FSH), testosterone, progesterone, and prolactin. The rates (%) of increase in fry production for females fed supplemented diets were 10.5, 18.6, and 32.2% for AN2, AN4, and AN6, respectively, compared to the control group. This work concluded that the inclusion levels of 6 g kg─1 of A. platensis nanoparticles in the diet of Nile tilapia broodstock significantly improved the growth performances, steroid hormone concentrations, and increased the fry production efficiency by 32.2%, respectively. These findings revealed that A. platensis nanoparticles resulted in a significantly enhanced female' reproductive productivity of Nile tilapia broodstock. [ABSTRACT FROM AUTHOR]
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- 2024
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43. Influence of selected non-antibiotic pharmaceuticals on antibiotic resistance gene transfer in Escherichia coli.
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Mohamed, Doaa Safwat, Abd El-Baky, Rehab Mahmoud, El-Mokhtar, Mohamed Ahmed, Ghanem, Sahar K., Yahia, Ramadan, Alqahtani, Alaa M., Abourehab, Mohammed A. S., and Ahmed, Eman Farouk
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DRUG resistance in bacteria , *GENETIC transformation , *HORIZONTAL gene transfer , *DIMETHYL sulfate , *DRUGS , *PLASMIDS - Abstract
Background: Antibiotic resistance genes (ARGs) transfer rapidly among bacterial species all over the world contributing to the aggravation of antibiotic resistance crisis. Antibiotics at sub-inhibitory concentration induce horizontal gene transfer (HRT) between bacteria, especially through conjugation. The role of common non-antibiotic pharmaceuticals in the market in disseminating antibiotic resistance is not well studied. Objectives: In this work, we indicated the effect of some commonly used non-antibiotic pharmaceuticals including antiemetic (metoclopramide HCl) and antispasmodics (hyoscine butyl bromide and tiemonium methyl sulfate) on the plasmid-mediated conjugal transfer of antibiotic resistance genes between pathogenic E. coli in the gastric intestinal tract (GIT). Methods: Broth microdilution assay was used to test the antibacterial activity of the tested non-antibiotic pharmaceuticals. A conjugation mating system was applied in presence of the studied non-antibiotic pharmaceuticals to test their effect on conjugal transfer frequency. Plasmid extraction and PCR were performed to confirm the conjugation process. Transmission electron microscopy (TEM) was used for imaging the effect of non-antibiotic pharmaceuticals on bacterial cells. Results: No antibacterial activity was reported for the used non-antibiotic pharmaceuticals. Plasmid-mediated conjugal transfer between isolates was induced by metoclopramide HCl but suppressed by hyoscine butyl bromide. Tiemonium methylsulfate slightly promoted conjugal transfer. Aggregation between cells and periplasmic bridges was clear in the case of metoclopramide HCl while in presence of hyoscine butyl bromide little affinity was observed. Conclusion: This study indicates the contribution of non-antibiotic pharmaceuticals to the dissemination and evolution of antibiotic resistance at the community level. Metoclopramide HCl showed an important role in the spread of antibiotic resistance. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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44. Impact of dietary administration of Arthrospira platensis free-lipid biomass on growth performance, body composition, redox status, immune responses, and some related genes of pacific whiteleg shrimp, Litopenaeus vannamei.
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Ashour, Mohamed, Mabrouk, Mohamed M., Mansour, Ahmed I. A., Abdelhamid, Ahmed F., Kader, Marwa F. AbdEl, Elokaby, Mohamed A., El-Nawsany, Mohamed M., Abdelwarith, Abdelwahab A., Younis, Elsayed M., Davies, Simon J., El-Haroun, Ehab, and Naiel, Mohammed A. E.
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WHITELEG shrimp , *BODY composition , *IMMUNE response , *BIOMASS , *DIETARY supplements , *DIGESTIVE enzymes , *LIPIDS , *STABLE isotopes - Abstract
The current study aimed to assess the influence of dietary inclusion of cyanobacterium Arthrospira platensis NIOF17/003 as a dry material and as a free-lipid biomass (FL) on the growth performance, body composition, redox status, immune responses, and gene expression of whiteleg shrimp, Litopenaeus vannamei postlarvae. L. vannamei were fed five different supplemented diets; the first group was fed on an un-supplemented diet as a negative control group (C-N), the second group was fed on a commercial diet supplemented with 2% of A. platensis complete biomass as a positive control group (C-P20), whereas, the three remaining groups were fed on a commercial diet supplemented with graded amounts of FL at 1%, 2%, and 3% (FL10, FL20, and FL30, respectively). The obtained results indicated that the diet containing 1% FL significantly increased the growth performance, efficiency of consumed feed, and survival percentage of L. vannamei compared to both C-N and C-P20 groups. As for the carcass analysis, diets containing A. platensis or its FL at higher levels significantly increased the protein, lipid, and ash content compared to the C-N group. Moreover, the shrimp group fed on C-P20 and FL10 gave significantly stimulated higher digestive enzyme activities compared with C-N. The shrimp fed C-P20 or FL exhibited higher innate immune responses and promoted their redox status profile. Also, the shrimp fed a low FL levels significantly upregulated the expression of both the peroxiredoxin (Prx) and prophenoloxidase (PPO1) genes than those receiving C-N. The current results recommended that dietary supplementation with 1% FL is the most effective treatment in promoting the performance and immunity of whiteleg shrimp. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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45. Radiosurgery-induced early changes in peritumoral tissue sodium concentration of brain metastases.
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Ruder, Arne Mathias, Mohamed, Sherif A., Hoesl, Michaela A. U., Neumaier-Probst, Eva, Giordano, Frank A., Schad, Lothar, and Adlung, Anne
- Abstract
Background: Stereotactic radiosurgery (SRS) is an effective therapy for brain metastases. Response is assessed with serial 1H magnetic resonance imaging (MRI). Early markers for response are desirable to allow for individualized treatment adaption. Previous studies indicated that radiotherapy might have impact on tissue sodium concentration. Thus, 23Na MRI could provide early quantification of response to SRS. Purpose: We investigated whether longitudinal detection of tissue sodium concentration alteration within brain metastases and their peritumoral tissue after SRS with 23Na MRI was feasible. Study type: Prospective. Population: Twelve patients with a total of 14 brain metastases from various primary tumors. Assessment: 23Na MRI scans were acquired from patients 2 days before, 5 days after, and 40 days after SRS. Gross tumor volume (GTV) and healthy-appearing regions were manually segmented on the MPRAGE obtained 2 days before SRS, onto which all 23Na MR images were coregistered. Radiation isodose areas within the peritumoral tissue were calculated with the radiation planning system. Tissue sodium concentration before and after SRS within GTV, peritumoral tissue, and healthy-appearing regions as well as the routine follow-up with serial MRI were evaluated. Statistical tests: Results were compared using Student's t-test and correlation was evaluated with Pearson's correlation coefficient. Results: We found a positive correlation between the tissue sodium concentration within the peritumoral tissue and radiation dosage. Two patients showed local progression and a differing tissue sodium concentration evolution within GTV and the peritumoral tissue compared to mean tissue sodium concentration of the other patients. No significant tissue sodium concentration changes were observed within healthy-appearing regions. Conclusion: Tissue sodium concentration assessment within brain metastases and peritumoral tissue after SRS with 23Na MRI is feasible and might be able to quantify tissue response to radiation. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
- View/download PDF
46. Pediatric cancer mortality: Analyzing early deaths and fatalities in a resource-limited tertiary care context.
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Farrag, Ahmed, Osman, Amira Mahmoud, and Ghazaly, Mohamed Hamdy
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EARLY death ,TUMOR lysis syndrome ,CHILD death ,CAUSES of death ,HEMATOLOGIC malignancies - Abstract
Introduction: Children with suspected cancer may succumb to their bad condition shortly after admission, even before a definitive diagnosis can be reached. We aimed to address the issue of delayed presentation and early deaths among children suspected of having cancer. We analyzed also the types and causes of mortalities across different tumor types. Materials and methods: A retrospective review of reports from newly admitted patients between 2006 and 2010 at the pediatric oncology department of the South Egypt Cancer Institute (SECI) was done. Parameters included age, gender, diagnosis, symptoms, the interval between initial symptoms and the first visit to SECI, the duration from admission to death, and the cause of death. Results: Among the 502 patients with confirmed malignancies, 238 (47.4%) succumbed. Causes of death were predominantly treatment-related mortalities (TRM) (66%). Mortalities within hematological malignancies were mainly TRM (81%), whereas solid tumors were primarily disease-related (70%), p <0.0001. The leading causes of TRM was infection (60%). About 5% of patients experienced early death within 48 hours after presenting to SECI. The mean duration from initial symptoms to the first SECI visit was 67 days, and the period from admission to death averaged 27 hours. Common initial symptoms included abdominal swelling (29.6%), or fever (26%). The leading causes of death were respiratory failure (29.6%), tumor lysis syndrome (22%), or septicemia (22%). Conclusions: Delayed presentation leading to early deaths poses a significant obstacle to the successful treatment of childhood cancers. Early diagnosis and improved supportive care are essential to enhancing the overall survival, particularly in patients with hematologigical malignancies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Blockchain for video watermarking: An enhanced copyright protection approach for video forensics based on perceptual hash function.
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Darwish, Saad Mohamed, Abu-Deif, Mona Mahamod, and Elkaffas, Saleh Mesbah
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COPYRIGHT , *DATA integrity , *INTELLECTUAL property , *BUILDING protection , *DIGITAL technology , *DIGITAL watermarking , *BLOCKCHAINS - Abstract
As a direct result of advancements in digital technology and the Internet, the copyright protection and information integrity of multimedia that are being published across the Internet have emerged as a major and urgent issue that needs to be addressed. The technique of digital watermarking may be used to protect intellectual property. In terms of authentication, resilience, storage, and capacity of digital watermarking information, there is still room for development. Blockchain's potential in video copyright protection and management applications has motivated researchers. Copyright owners and consumers may now communicate directly via copyright protection apps built on the blockchain, eliminating the need for distributers and the associated fees. Nonetheless, the current blockchain–based video watermarking solutions require storing a significant number of coordinates depending on the watermark size and are susceptible to video frame attacks on the video frame texture region. This study proposes an enhanced video copyright management approach that incorporates digital watermarking, the blockchain, and a perceptual hash function. Watermark information is stored on a blockchain structure, which also acts as a timestamp for verification purposes. To verify watermark data without the source video, a perceptual hash function is employed to compute a hash value based on the structural information of video frames. The contribution is in learning how to extract a hash function from a small number of video frames that still adequately represent a large amount of video content while also reducing the number of unnecessary video frames and the amount of computation required to summarize and index that content in a blockchain. This expedites the dissemination of copyrighted works and increases their security and readability, hence facilitating their circulation on the Internet. Our experimental results demonstrate that this approach is memory efficient, as it only needs to store one key for each key frame, regardless of the size of the watermark. Additionally, the overall robustness is greatly improved by using the blockchain's random hash function. Therefore, new and important advancements in video watermarking have been realized because of this effort. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. Adaptive electronic relay for smart grid based on self-healing protection.
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Nasrallah, M., Abdelaleem, Ahmed, Ismeil, Mohamed A., and Hussein, Hany S.
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GRIDS (Cartography) ,ALGORITHMS - Abstract
The protection system is crucial for grid stability and safeguarding essential components, including generators, transformers, transmission systems, and power connections. The smart grid system increases the flexibility and complexity of the power system, making fault detection and isolation the primary challenges for the protection system. This paper presents an optimal protection solution using an adaptive electronic relay to enhance reliability and enable self-healing. The proposed protection algorithm quickly detects faults and automatically isolates them from the rest of the healthy system in 25ms. The relay operation algorithm has been validated using MATLAB SIMULINK software. The results confirm the effectiveness of the proposed smart electronic relay in various sections of the smart grid system, including transformers, transmission and distribution [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Sulfate activation of wheat straw ash to enhance the properties of high-performance concrete with recycled aggregates and waste tire steel fibers.
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Althoey, Fadi, Zaid, Osama, and Elhadi, Khaled Mohamed
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MINERAL aggregates ,RECYCLED concrete aggregates ,STEEL wastes ,WASTE tires ,WASTE recycling - Abstract
A sustainable alternative to conventional concrete involves using recycled aggregates (RA) instead of natural aggregates (NA) and incorporating wheat straw ash (WSA) as a partial replacement for Portland cement. The demand for high-performance concrete (HPC) is rising due to the need for architecturally complex structures and long-span bridges, but HPC's low ductility necessitates reinforcement. Waste tire steel fibers (WTSFs) are gaining popularity for their tensile strength. However, WSA-RA concrete's low early strength is a challenge. Chemical activators like sodium sulfate can enhance early-age strength. This study evaluated the durability and strength of fiber-reinforced concrete with both inactivated and activated WSA. Tests included compressive strength, indirect tensile strength, modulus of rupture (MOR), acid attack resistance, chloride penetration, sorptivity, and water absorption. Activated WSA-RA concrete showed significantly improved early strength. The mixture with 30% RA, 40% WSA, WTSFs, and activator exhibited the highest strength at 90 days. At 60% RA content, activated concrete with 40% WSA and 2.5% WTSFs outperformed the control. Durability was enhanced with a 14–17% reduction in water absorption and sorptivity and a 25.2% decrease in chloride penetration. Acid resistance improved by 26%. X-ray diffraction (XRD) confirmed these findings with elevated hydration product peaks. This study demonstrates that chemical activation of WSA optimizes the engineering properties of WSA-modified HPC with WTSFs and RA, providing a sustainable solution to their challenges. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Corneal nerve loss in adolescents with obesity and acanthosis nigricans.
- Author
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Gad, Hoda, Dauleh, Hajar, Chirayath, Shiga, Amin, Rasha, Pasha, Maheen, Elgassim, Einas, Haris, Basma, Mohamadsalih, Ghassan, Jolkka, Sari, Biglang-awa, Roshirl, Cuatrona, Erlinda, Inso, Gina, Razon, Gerald, Hendaus, Mohamed A., Wahbeh, Farah, Sajjadi, Fatima, Al-Hashimi, Yasmeen, AlNassr, Noor, Petropoulos, Ioannis N., and Ponirakis, Georgios
- Subjects
ADOLESCENT obesity ,BODY composition ,ACANTHOSIS nigricans ,GLUCOSE intolerance ,THRESHOLD (Perception) - Abstract
Background/Aim: Obesity and related metabolic abnormalities in adults are associated with peripheral neuropathy. Acanthosis nigricans (AN) is associated with insulin resistance, fatty liver, hyperlipidemia and glucose intolerance, all of which are risk factors for neuropathy. The aim of this study was to investigate if obese adolescents with AN have evidence of small nerve fiber damage. Material and methods: Adolescents with obesity with and without AN underwent body composition analysis, assessment of vibration perception threshold (VPT), monofilament sensitivity and corneal confocal microscopy (CCM) to quantify corneal nerve fiber density (CNFD), branch density (CNBD), length (CNFL) and inferior whorl length (IWL). Results: Forty-six participants with obesity with (n = 31) and without (n = 15) AN aged 15(14–17) years were compared to 20 healthy controls aged 13(12–14) years. There was no difference in VPT, monofilament sensitivity and CCM measures between adolescents with obesity and controls. However, adolescents with AN had a significantly higher weight (P = 0.022), fat% (P = 0.029) and fat-muscle ratio (P = 0.012) with a lower CNFD (P = 0.045) compared to those with obesity without AN. Conclusion: Adolescents with obesity and acanthosis nigricans have a higher fat mass and small nerve fibre loss, indicative of a sub-clinical neuropathy. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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