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Search Results: 1 - 10 of 409626 matches for " Ahmed M. Abdel-Azeem "
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Assessment of Secondary Metabolites from Marine-Derived Fungi as Antioxidant  [PDF]
Nihad Abdel-Monem, Ahmed M. Abdel-Azeem, E. S. H. El Ashry, Doaa A. Ghareeb, Asmaa Nabil-Adam
Open Journal of Medicinal Chemistry (OJMC) , 2013, DOI: 10.4236/ojmc.2013.33009
Abstract:

Marine derived fungi are considered as a promising source of novel drugs due to their biodiversity and consequent chemo-diversity. Although marine microorganisms especially fungi are not well defined taxonomically, making this a promising frontier for the discovery of new medicines. This study focused on marine derived fungi as a model for bioactive exploration for new entities with anti-inflammatory and antioxidant capacity. Three in-vitro assays were used to investigate the bioactive antioxidant potentiality of fungal extracts. Thiobarbituric acid (TBARS),α,α-Diphenyl-β- picrylhydrazyl (DPPH) and NO assay are based on their total phenolic and flavonoid content of each extract group. Ch. globosum recorded the highest antioxidant activity (92.82%) in TBARS assay, while G. dankaliensis came first by recording 59.28% in DPPH assay in comparison with ascorbic acid (61.83%). In NO inhibition assay, N. oryzae showed 49.3% comparing with ascorbic acid (73.12%). From the preliminary result of our extracts, we can consider the marine derived fungi extracts as

The history, fungal biodiversity, conservation, and future perspectives for mycology in Egypt
A.M. Abdel-Azeem
IMA Fungus , 2010,
Abstract: Records of Egyptian fungi, including lichenized fungi, are scattered through a wide array of journals, books, and dissertations, but preliminary annotated checklists and compilations are not all readily available. This review documents the known available sources and compiles data for more than 197 years of Egyptian mycology. Species richness is analysed numerically with respect to the systematic position and ecology. Values of relative species richness of different systematic and ecological groups in Egypt compared to values of the same groups worldwide, show that our knowledge of Egyptian fungi is fragmentary, especially for certain systematic and ecological groups such as Agaricales, Glomeromycota, and lichenized, nematode-trapping, entomopathogenic, marine, aquatic and coprophilous fungi, and also yeasts. Certain groups have never been studied in Egypt, such as Trichomycetes and black yeasts. By screening available sources of information, it was possible to delineate 2281 taxa belonging to 755 genera of fungi, including 57 myxomycete species as known from Egypt. Only 105 taxa new to science have been described from Egypt, one belonging to Chytridiomycota, 47 to Ascomycota, 55 to anamorphic fungi and one to Basidiomycota.
Zinc, ferritin, magnesium and copper in a group of Egyptian children with attention deficit hyperactivity disorder
Magdy M Mahmoud, Abdel-Azeem M El-Mazary, Reham M Maher, Manal M Saber
Italian Journal of Pediatrics , 2011, DOI: 10.1186/1824-7288-37-60
Abstract: This study aimed to measure levels of zinc, ferritin, magnesium and copper in children with attention deficit hyperactivity disorder and comparing them to normal.This study included 58 children aged 5-15 years with attention deficit hyperactivity disorder attending Minia University Hospital from June 2008 to January 2010. They were classified into three sub-groups: sub-group I included 32 children with in-attentive type, sub-group II included 10 children with hyperactive type and sub-group III included 16 children with combined type according to the DSM-IV criteria of American Psychiatric Association, 2000. The control group included 25 apparently normal healthy children.Zinc, ferritin and magnesium levels were significantly lower in children with attention deficit hyperactivity disorder than controls (p value 0.04, 0.03 and 0.02 respectively), while copper levels were not significantly different (p value 0.9). Children with inattentive type had significant lower levels of zinc and ferritin than controls (p value 0.001 and 0.01 respectively) with no significant difference between them as regards magnesium and copper levels (p value 0.4 and 0.6 respectively). Children with hyperactive type had significant lower levels of zinc, ferritin and magnesium than controls (p value 0.01, 0.02 and 0.02 respectively) with no significant difference between them as regards copper levels (p value 0.9). Children with combined type had significant lower levels of zinc and magnesium than controls (p value 0.001 and 0.004 respectively) with no significant difference between them as regards ferritin and copper levels (p value 0.7 and 0.6 respectively).Children with attention deficit hyperactivity disorder had lower levels of zinc, ferritin and magnesium than healthy children but had normal copper levels.Attention deficit hyperactivity disorder (ADHD) is a behavioral syndrome of childhood characterized by pervasive and impairing symptoms of inattention, hyperactivity and impulsivity of e
Platinum 1,10-phenanthroline: Photosensitizer for photocatalytic degradation of 4-chlorophenol
Ahmed Kadry Aboul-Gheit,Sahar Moustafa Ahmed,Doaa Samir El-Desouki,Samira Mohamed Abdel-Azeem
European Journal of Chemistry , 2011, DOI: 10.5155/eurjchem.2.1.104-108.103
Abstract: It is more economic to apply photodegradation of organic pollutants in presence of the visible light irradiation (sunlight) than applying more costfull ultraviolet lamps. Hence, platinum 1,10-phenanthroline complex has been prepared and tested as a photosensitizer for photodegrading 4-chlorophenol in water, which has been found almost completely achieved (98.5 %) after three hours of visible irradiation. Nevertheless, irradiation at 364 and 254 nm exhibits lower efficiencies. At visible irradiation, the platinum complex gives the highest activation of singlet state oxygen formation (1O2) compared to 364 and 254 nm irradiation as supported by electron para-magnetic resonance data. On the other hand, the behavior of formation and disappearance of photodegradation intermediates: hydroquinone, benzoquinone, hydroxybenzoquinone, using the platinum complex applying the three current irradiations are found to supports these findings. However, organic acids have accumulated as a function of irradiation time and hence considered to be rate-controlling.
Thyroid Activity, Some Blood Constituents, Organs Morphology and Performance of Broiler Chicks Fed Supplemental Organic Acids
S.A. Abdel-Fattah,M.H. El-Sanhoury,N.M. El-Mednay,F. Abdel-Azeem
International Journal of Poultry Science , 2008,
Abstract: A total number of 189 one d-old Hubbard broiler chicks were randomly divided into seven treatment groups of three replicates, 9 chicks each. The first group was served as control and fed the basal diets. While, the other six groups were received the basal diet supplemented with acetic acid (AC), citric acid (CA) or lactic acid (LA) at different levels of 1.5 and 3.0 % of diet, respectively. The experiment was lasted when chicks were 42 d old. Thyroid gland activity, some blood components, organ morphology, pH level of some gastrointestinal tract (GI-tract) segments and performance were measured. The results showed that dietary acidification elevated significantly concentration of T3 as well as T3:T4 ratio, but T4 level was not significantly affected. Moreover, the effect was clearly notable with CA and AC. Chicks fed acidified diets had better immune response as indicated by their higher serum globulin and relative lymphoid organs than the control. Similarly, higher calcium and phosphorus concentrations were noted. On the other hand, significant reduction in abdominal fat and serum level of cholesterol and total lipid was achieved due to dietary acidification. The liver functions did not adversely alter, in response to addition of organic acidifiers. Addition of any level and source of organic acids increased feed digestion and absorption as a result of increasing relative pancreas weight and small intestine density (indication of the intestinal villi dimension). The pH values in different GI-tract segments were insignificantly decreased with supplemental all types and doses of AC, CA and LA. Broiler chicks of dietary organic acids had superior improvement in live body weight (LBW), body weight gain (BWG) and feed conversion ratio (FCR) as compared to those of unsupplemented diet. No remarkable differences were noted between the addition of 1.5 and 3% of either AC, CA or LA in most studied traits.
Diversity of terrophilous mycobiota of Sinai
AM Abdel-Azeem, ME Ibrahim
Egyptian Journal of Biology , 2004,
Abstract:
Using of PCR assay for identification of Listeria monocytogenes recovered from table eggs
Mohammed Sayed,Moemen Abdel-Azeem,Mahmoud Farghaly,Rafaat Hassanein
Veterinary World , 2009,
Abstract: The purpose of this study was to determine the incidence of Listeria monocytogenes contaminating egg shells and contents of table eggs sold in Assiutcity, Egypt. A total of 300 fresh table eggs were collected randomly from different markets in which every 3 eggs from each market were represented as one egg pooled sample. Each of egg shell and content was subjected to procedures of isolation of L. monocytogenes followed by PCR assay for theprfA gene for identification. It was found that egg shells were contaminated by 7% while none of egg contents were contaminated, concluding that egg shell was more subjected to contamination with L. monocytogenes than egg content. The obtained results revealed the degree of contamination and public health hazard in the surroundings contacting eggs until reaching the markets and consequently the consumers. It can be concluded that it was uncomfortable result to find L. monocytogenes by this degree of contamination in table eggs and how extent the zoonotic view is meaningful. Future control strategies need to consider variations in the epidemiologies of food-borne zoonotic infections, and apply a quantitative risk analysis approach to ensure that the most cost-effective programs are developed. [Vet World 2009; 2(12.000): 453-455]
A PSO-Based Subtractive Data Clustering Algorithm
Mariam El-Tarabily,Rehab Abdel-Kader,Mahmoud Marie,Gamal Abdel-Azeem
International Journal of Research In Computer Science , 2013,
Abstract: There is a tremendous proliferation in the amount of information available on the largest shared information source, the World Wide Web. Fast and high-quality clustering algorithms play an important role in helping users to effectively navigate, summarize, and organize the information. Recent studies have shown that partitional clustering algorithms such as the k-means algorithm are the most popular algorithms for clustering large datasets. The major problem with partitional clustering algorithms is that they are sensitive to the selection of the initial partitions and are prone to premature converge to local optima. Subtractive clustering is a fast, one-pass algorithm for estimating the number of clusters and cluster centers for any given set of data. The cluster estimates can be used to initialize iterative optimization-based clustering methods and model identification methods. In this paper, we present a hybrid Particle Swarm Optimization, Subtractive + (PSO) clustering algorithm that performs fast clustering. For comparison purpose, we applied the Subtractive + (PSO) clustering algorithm, PSO, and the Subtractive clustering algorithms on three different datasets. The results illustrate that the Subtractive + (PSO) clustering algorithm can generate the most compact clustering results as compared to other algorithms.
Brain CT Findings in First Episode Depression in Older Adults  [PDF]
Ezzat Abdel Azeem A. Awad, Heba Mahmoud Fakher Hendawy, Ahmed Kamil Alawady
Open Journal of Psychiatry (OJPsych) , 2015, DOI: 10.4236/ojpsych.2015.51006
Abstract: Introduction: Different studies reported the strong relationship between cerebrovascular changes (CVC) and depression. Moreover, many researchers tried to correlate between the pathogenesis and location of the CVC and severity of depression. Methods: In this study we looked for the possibility of presence of CVC in patients with an age ranging from 60 - 75 years, presented to psychiatric clinics and hospitals in Hail, Saudi Arabia and diagnosed for the first time with depression. All patients have been diagnosed neither with cerebral attacks (CA) nor with depression. A cross sectional study was done on 149 patients. Hamilton rating scale (HRS) for depression was used to evaluate the severity of depression before staring any treatment. National institutes of health stroke scale (NIHSS) was applied for all the patients to exclude any possibility of CA. Brain CT was done to all patients to detect an evidence of CVC. Results: According to the CT findings, the patients were divided into four groups: Group 1 with normal CT findings; Group 2 with ischemic changes; Group 3 with single lacunar infraction; and Group 4 with multiple lacunar infarctions. After analyzing the results and correlating the severity of depression and CT findings in the four different groups we found significance in the correlation between severity of depression and the presence of minor strokes. Conclusions: A first episode of depression in older adult patients may indicate the presence of minor or silent stroke or CA.
Remifentanil infusion as a modality for opioid-based anaesthesia in paediatric practice
Abdel Hamid Ahmed,Abo Shady Ashraf,Abdel Azeem Ehab
Indian Journal of Anaesthesia , 2010,
Abstract: This study was designed to compare the intra-operative and post-operative analgesic requirements and side effects of using fentanyl infusion versus remifentanil infusion during short-duration surgical procedures in children. The study comprised of 40 children randomly allocated into two equal groups: fentanyl (F-group) or remifentanil (R-group). Both were administered a continuous intravenous (i.v.) infusion. Anaesthetic recovery was assessed using the Brussels sedation scale every 5 min from the time of entry till discharge from recovery room. Post-operative analgesia was assessed throughout the first three post-operative (PO) hours using observational pain-discomfort scale (OPS) and adverse events were recorded. Haemodynamic variables showed a non-significant difference between both the groups. Patients who received remifentanil showed significantly shorter time to spontaneous respiration, eye opening, extubation and verbalization compared to those who received fentanyl. Discharge time was significantly shorter in R-group, and 18 patients fulfilled criteria for recovery-room discharge at ≤25 min with a significant difference in favour of remifentanil. Fentanyl provided significantly better PO analgesia than remifentanil and children in F-group showed a significantly lower mean cumulative OPS record than those in R-group; however, the number of patients requiring rescue analgesia did not show a significant difference between both the groups. Two cases in F-group and one in R-group had bradycardia, one case in R-group had mild hypotension and PO vomiting had occurred in three patients in the F-group and two patients in the R-group. In conclusion, remifentanil is appropriate for opioid-based anaesthesia for paediatric patients as it provides haemodynamic stability and rapid recovery with minimal post-operative side effects.
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