oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

9 ( 1 )

2019 ( 43 )

2018 ( 244 )

2017 ( 215 )

Custom range...

Search Results: 1 - 10 of 16619 matches for " Rehab Mahmoud Abd El-Baky and Gamal Fadl Gad "
All listed articles are free for downloading (OA Articles)
Page 1 /16619
Display every page Item
In vitro Efficacy of Ureteral Catheters Impregnated with Ciprofloxacin, N-acetylcysteine and their Combinations on Microbial Adherence
Mostafa Said Khalil El-Rehewy, Mohamed Ali El-Feky, Mona Amin Hassan, Hassan A Abolella, Ahmad Abolyosr, Rehab Mahmoud Abd El-Baky and Gamal Fadl Gad
Clinical Medicine Insights: Urology , 2012,
Abstract: Background: Ureteral catheters are valuable indispensable devices may readily acquire biofilms on the inner or outer surfaces. This study evaluated the efficacies of ureteral catheters impregnated with ciprofloxacin, N-acetylcysteine each alone and in combination on microbial adherence. Methods: Antimicrobial durability of ureteral catheters coated, through instant dip method, with ciprofloxacin were determined using modified Kirby-Bauer method. Ciprofloxacin-coated catheters showed zones of inhibition ranged from 15 to 45 mm in diameter (baseline) against nine clinical strains recently isolated from patients undergoing ureteral stent removal. Segments coated with ciprofloxacin, N-acetylcysteine each alone and in combination, through instant dip method, were incubated with the tested microorganisms, washed, sonicated, cultured and the number of viable cells were determined. Results: Ciprofloxacin-coated catheters soaked in urine and incubated at 37 °C, maintained antimicrobial activities and produce zones of inhibition that measured 2–10 mm for at least 8 weeks. Effect of ciprofloxacin and N-acetylcysteine coated catheters on microbial adherence were found to be dose dependent. Catheters impregnated with ciprofloxacin/N-acetylcysteine showed the highest inhibitory effect on microbial adherence when compared with controls (85.5%–100%). Conclusion: Catheters impregnated with ciprofloxacin, using instant dip method, were shown to have broad spectrum, prolonged antimicrobial durability and high efficacy. On the other hand, Catheters impregnated with ciprofloxacin/NAC showed the highest inhibitory effect on microbial adherence to stent surfaces.
Production of Lipids Rich in Omega 3 Fatty Acids from the Halotolerant Alga Dunaliella salina
Hanaa H. Abd El-Baky,Farouk K. El Baz,Gamal S. El-Baroty
Biotechnology , 2004,
Abstract: The effect of nitrogen limitation and salt stress on total lipid and unsaponifiable contents as well as fatty acid composition of Dunaliella salina were studied. The contents of total lipids, unsaponifiables and fatty acid composition were basically depend on NaCl and nitrogen concentration in the culture. The highest yield of total lipids (37.69%) and unsaponifiables (29.02%) was obtained in cells grown at 16% NaCl combined with 2.5 mM nitrogen. While, minimum yield occurred in cells grown in a culture containing 8% NaCl and 5 mM N. Cells grown at 16% NaCl combined with 2.5 mM N produced relatively higher proportion of polyunsaturated fatty acids (PUFAs), in particular C18:3w3 and C16:4w3. Increasing NaCl combined with decreasing N levels in the growth medium increased the total unsaturated fatty acids (TU) at the expense of total saturated fatty acids. At higher salinity, the total amounts of carotenoids and α-tocopherol in unsaponifiable fraction were significantly increased to reaching up to 12.03 and 4.10%. The results obtained suggest that D. salina cells containing high amount of total lipid, rich in w3 polyunsaturated fatty acids and antioxidant compounds in unsaponifiable lipid fraction may used as a supplemental ingredient or as a complete food to enhance the performance and state of the human body or improve a specific bodily function.
Spirulina Species as a Source of Carotenoids and a-Tocopherol and its Anticarcinoma Factors
Hanaa H. Abd El-Baky,Farouk K. El Baz,Gamal S. El-Baroty
Biotechnology , 2003,
Abstract: In the present study blue-green alga Spirulina platensis and Spirulina maxima were grown in batch culture at different nitrogen and NaCl concentrations, respectively. Both species were found to respond to nitrogen deficiency and high NaCl level by accumulation of large amounts of commercially important chemicals such as carotenoids and tocopherols. The higher carotenoids and a-tocopherol contents was obtained when Spirulina sp grown at low nitrogen level (51 ppm N), with values ranged from 19.82 to 24.1 mg g -1 and from 533.2 to 978.5 g Kg-1 (dry weight, d.w.), respectively. Whilst, these values in cells grown in free nitrogen medium were ranged from 30.15 to 31.13 mg g-1 and from 960.4 to 1325.7 g Kg-1 (d.w), respectively. The high performance liquid chromatography (HPLC) elution patter of total caroteniods extracted from S. platensis and S maxima culture contained a-carotene (49.6 to 319.5 g g-1 lutein (0.06 to17.21 g g-1, astaxanthin (6.61 to 160.27 g g-1, zeaxanthin (1.25 to 18.55 g g-1) and cryptoxanthin (1.41 to 20.13 g g-1). S. maxima accumulated a large amount of cryptoxanthin and zeaxanthin than that found in S. platensis. The effect of Spirulina species extracts containing various carotenoid compounds and tocopherols on the viability of Ehrlich ascites carcinoma cells (EACC) were evaluated. All algae extracts at different concentration of 200 and 400 ppm significant reduced the cell viability ranged from 89.11 to 5.25%. These extracts did not induce any significant changes in DNA fragmentation of treated EACC compared with untreated cells. But lactate dehydrogenase (LDH) and glutathione-S- transferase (GST) enzyme activities and glutathione level in treated EACC were significantly higher than that in untreated cells. These finding suggest that algae extracts may be reduce cell viability by other mechanism such as membrane lyases instead of apoptosis. Thus, Spirulina extract rich in carotenoids and tocopherols could be used as chemopreventive agents since they are relative non-toxic.
Air Cooling of Mini-Channel Heat Sink in Electronic Devices  [PDF]
Mousa M. Mohamed, Mostafa A. Abd El-Baky
Journal of Electronics Cooling and Thermal Control (JECTC) , 2013, DOI: 10.4236/jectc.2013.32007
Abstract: Heat transfer experiments were conducted to investigate the thermal performance of air cooling through mini-channel heat sink with various configurations. Two types of channels have been used, one has a rectangular cross section area of 5 × 18 mm2 and the other is triangular with dimension of 5 × 9 mm2. Four channels of each configuration have been etched on copper block of 40 mm width,30 mm height, and 200 mm length. The measurements were performed in steady state with air flow rates of 0.002 - 0.005 m3/s, heating powers of 80 - 200 W and channel base temperatures of 48°C, 51°C, 55°C and 60°C. The results showed that the heat transfer to air stream is increased with increasing both of air mass flow rate and channel base temperature. The rectangular channels have better thermal performance than trian- gular ones at the same conditions. Analytical fin approach of 1-D and 2-D model were used to predict the heat transfer rate and outlet air temperature from channels heat sink. Theoretical results have been compared with experimental data. The predicted values for outlet air temperatures using the two models agree well with a deviation less than ±10%. But for the heat transfer data, the deviation is about +30% to –60% for 1-D model, and –5% to –80% for 2-D model. The global Nusselt number of the present experimental data is empirically correlated as \"\" with accuracy of ±20% for \"\" and compared with other literature correlations.
Over Production of Phycocyanin Pigment in Blue Green Alga Spirulina sp. and It`s Inhibitory Effect on Growth of Ehrlich Ascites Carcinoma Cells
Hanaa H. Abd El-Baky
Journal of Medical Sciences , 2003,
Abstract: Two species of blue green algae Spirulina platensis and Spirulina maxima were grown in nutrient medium containing different nitrogen and salt levels. In both species increasing nitrogen levels led to increase in phycocyanin pigments from 12.08 to 22.3% and soluble protein content from 29.7 to 86.1 mg g G 1. Also, Spirulina has great variety in composition of phycocyanin pigments ranging from C-phycocyanin (C-PC) from 1.65 to 4.02%, allophycocyanin (A-PC) from 2.53 to 6.11% and R-phycocyanin (R-PC) from 5.75 to 12.35% as a results, of changing nitrogen contents and salt stress. Spirulina platensis at high nitrogen level gave highest percentage of total phycocyanin 9.94% and R-CP 5.75% was the predominate among phycocyanin pigments. The increasing in NaCl levels in nutrient medium led to production significant in phycocyanin contents and soluble protein in Spirulina platensis and Spirulina maxima cells. The composition of phycocyanin pigment was changed markedly as results of increasing in NaCl level. Both algal species grown under combined stress (nitrogen deficient and high NaCl level) produced higher amount of phycocyanin than control. The anti-carcinoma activity of Spirulina towered Ehrlich Ascites Carcinoma Cells (EACC) was evaluated by cell viability, DNA fragmentation and enzymes assay. Phycocyanin significantly inhibited the growth of EACC in a dose-dependent manner. Phycocyanin did not induce DNA fragmentation in EACC, (no ladder of DNA fragments). However, glutathione (GST), the activity of glutathione S- transferase (GST) and lactate dehydrogenase (LDH) were significantly increased over the control level. These findings indicate that phycocyanin may be able to inhibit the growth of EACC by membrane destructor, which led to increase the leakage of cell constituent and increase LDH and GST enzyme activities. Therefore, algal phycocyanin may have antitumor activity and could be used as a chemoprventive agent.
Influence of Salinity on Lipid Peroxidation, Antioxidant Enzymes and Electrophoretic Patterns of Protein and Isoenzymes in Leaves of Some Onion Cultivars
Abd El-baky,H. Hanaa,M.M. Hussein,Mohamed, A. Amal
Asian Journal of Plant Sciences , 2003,
Abstract: The changes that take place in the leaf apoplastic antioxidant enzymes system, protein and isoenzyme pattern in response to salts stress was studied in three onion (Allium ceba L.) cultivars, named Behary Red, Giza 6 and Giza 20. The constitutive level of lipid peroxidation and glutathione content (GSH), enzymes activity of catalase (CAT), superoxide dismutase (SOD) and peroxidase (POD) as well as the protein and isoenzymes pattern were performed in the leaf of control (tap water, 200 ppm salts) and three concentrations of salt (2000, 4000 and 6000 ppm salts prepared from seawater (28000 ppm salts) stressed plants, 45 days after completing the stress treatments. The salt stress increased the rates of lipid peroxidation (as indicated by increasing the malonaldhyde (MDA) contents) and their effect was increased gradually by increasing salts levels. The increasing values in MDA contents in salt stress plants treated at 2000, 4000 and 6000 ppm salts levels were 121.9, 248.6 and 290.3% in Behary Red cv. and 126.4, 260.0 and 396.2% in Giza 20 cv., respectively of the control level (100%). Generally, salts stress induced significant increase in the activities of the antioxidative enzymes CAT, POD and SOD in onion cvs., accompanied by increased in glutathione level. The GSH level was increased more in Behary Red cv. and Giza 20 cv., than in Giza 6 cv., at 6000 ppm salts. Their increasing values were 203.7, 283.3 and 242.86%, respectively compared to the control level (100%). The leaf protein profile obtained by SDS-PAGE was diagnostic of characteristics different onion cultivars exposed to salts stress which, three distinct new protein bands with molecular weigh 50, 66 and 80 kDa were produced in Giza 6, Giza 20 and Behary Red onion cultivars, respectively. Also, electrophoretic bands of POD and CAT isoenzyme of different onion cultiver were differ in numbers and relative concentration due to salts stress. This finding suggested that Behary onion cultiver is better protected against lipid peroxidation process, inherently and under salts stress, than Giza 6 and Giza 20 onion cultivers. Also, the new protein bands and the characteristic CAT and POD isoenzymes banding patterns could be used as a biochemical marker for selection of salt tolerance onion plants when grown under salts stress.
Influence of Salinity on Lipid Peroxidation, Antioxidant Enzymes and Electrophoretic Patterns of Protein and Isoenzymes in Leaves of Some Onion Cultivars
Abd El-baky,H. Hanaa,Mohamed, A. Amal,M.M. Hussein
Asian Journal of Plant Sciences , 2003,
Abstract: The changes that take place in the leaf apoplastic antioxidant enzymes system, protein and isoenzyme pattern in response to salts stress was studied in three onion (Allium ceba L.) cultivars, named Behary Red, Giza 6 and Giza 20. The constitutive level of lipid peroxidation and glutathione content (GSH), enzymes activity of catalase (CAT), superoxide dismutase (SOD) and peroxidase (POD) as well as the protein and isoenzymes pattern were performed in the leaf of control (tap water, 200 ppm salts) and three concentrations of salt (2000, 4000 and 6000 ppm salts prepared from seawater (28000 ppm salts) stressed plants, 45 days after completing the stress treatments. The salt stress increased the rates of lipid peroxidation (as indicated by increasing the malonaldehyde (MDA) contents) and their effect was increased gradually by increasing salts levels. The increasing values in MDA contents in salt stress plants treated at 2000, 4000 and 6000 ppm salts levels were 121.9, 248.6 and 290.3% in Behary Red cv. and 126.4, 260.0 and 396.2% in Giza 20 cv., respectively of the control level (100%). Generally, salts stress induced significant increase in the activities of the antioxidative enzymes CAT, POD and SOD in onion cvs., accompanied by increased in glutathione level. The GSH level was increased more in Behary Red cv. and Giza 20 cv., than in Giza 6 cv., at 6000 ppm salts. Their increasing values were 203.7, 283.3 and 242.86%, respectively compared to the control level (100%). The leaf protein profile obtained by SDS-PAGE was diagnostic of characteristics different onion cultivars exposed to salts stress which, three distinct new protein bands with molecular weigh 50, 66 and 80 kDa were produced in Giza 6, Giza 20 and Behary Red onion cultivars, respectively. Also, electrophoretic bands of POD and CAT isoenzyme of different onion cultiver were differ in numbers and relative concentration due to salts stress. This finding suggested that Behary onion cultiver is better protected against lipid peroxidation process, inherently and under salts stress, than Giza 6 and Giza 20 onion cultivers. Also, the new protein bands and the characteristic CAT and POD isoenzymes banding patterns could be used as a biochemical marker for selection of salt tolerance onion plants when grown under salts stress.
Erratum
Shehata GA, Elserogy YM, Ahmad HEK, Abdel-Kareem MI, Al-kabeer AM, Rayan MM, Abd El-Baky MES
International Journal of General Medicine , 2011, DOI: http://dx.doi.org/10.2147/IJGM.S22567
Abstract: Erratum Erratum (2835) Total Article Views Authors: Shehata GA, Elserogy YM, Ahmad HEK, Abdel-Kareem MI, Al-kabeer AM, Rayan MM, Abd El-Baky MES Published Date July 2011 Volume 2011:4 Pages 547 - 548 DOI: http://dx.doi.org/10.2147/IJGM.S22567 Shehata GA, Elserogy YM, Ahmad HEK, Abdel-Kareem MI, Al-kabeer AM, Rayan MM, Abd El-Baky MES. Multimodal neurophysiological and psychometric evaluation among patients with systemic lupus erythematosus. International Journal of General Medicine. 2011;4:325–332. Dr Rayan and Dr Abd El-Baky are affiliated with the Department of Rheumatology, Physical Medicine and Rehabilitation at Al-Azhar University, Assiut, Egypt. Read the Original Article Post to: Cannotea Citeulike Del.icio.us Facebook LinkedIn Twitter Other articles by Dr Ghaydaa A Shehata Multimodal neurophysiological and psychometric evaluation among patients with systemic lupus erythematosus Neuropsychological effects of antiepileptic drugs (carbamazepine versus valproate) in adult males with epilepsy Population-based study of acquired cerebellar ataxia in Al-Kharga district, New Valley, Egypt Subclinical cerebrovascular cognitive function, and mood changes in patients with systemic lupus erythematosus Readers of this article also read: Gamma knife radiosurgery for uveal melanoma ineligible for brachytherapy by the Collaborative Ocular Melanoma Study criteria Role of aliskiren in cardio-renal protection and use in hypertensives with multiple risk factors Amino acid management of Parkinson’s disease: a case study Antiplatelet antibody may cause delayed transfusion-related acute lung injury Experience with an extended-release opioid formulation designed to reduce abuse liability in a community-based pain management clinic New and emerging treatments for the prevention of recurrent diverticulitis Effect of a clown’s presence at botulinum toxin injections in children: a randomized, prospective study Transvaginal sonographic evaluation at different menstrual cycle phases in diagnosis of uterine lesions Update on celiac disease – etiology, differential diagnosis, drug targets, and management advances Fluoroscopic caudal epidural injections in managing chronic axial low back pain without disc herniation, radiculitis, or facet joint pain
Multimodal neurophysiological and psychometric evaluation among patients with systemic lupus erythematosus
Shehata GA, Elserogy YM, Ahmad HEK, Abdel-Kareem MI, Al-kabeer AM, Rayan MM, Abd El-Baky MES
International Journal of General Medicine , 2011, DOI: http://dx.doi.org/10.2147/IJGM.S16492
Abstract: ltimodal neurophysiological and psychometric evaluation among patients with systemic lupus erythematosus Original Research (3786) Total Article Views Authors: Shehata GA, Elserogy YM, Ahmad HEK, Abdel-Kareem MI, Al-kabeer AM, Rayan MM, Abd El-Baky MES Published Date April 2011 Volume 2011:4 Pages 325 - 332 DOI: http://dx.doi.org/10.2147/IJGM.S16492 Ghaydaa A Shehata1, Yasser MB Elserogy2, Hossam Eddin K Ahmad2, Mohamed I Abdel-Kareem3, Ashraf M Al-kabeer4, Mohamed M Rayan2, Mohamed ES Abd El-Baky 1Department of Neurology; 2Department of Psychiatry, Assiut University, Egypt; 3Department of Rheumatology, Physical Medicine and Rehabilitation; 4Department of Internal Medicine, Faculty of Medicine, Al-Azhar University, Assiut, Egypt Objective: To determine some of the neuropsychiatric manifestations of systemic lupus erythematosus (SLE) by applying multimodal neurophysiological and psychometric studies. Patients and methods: Twenty-six SLE patients were evaluated for neurological and psychiatric disorders and compared with 26 healthy controls matched for age, sex, education, and social class. The severity of SLE disease was assessed. Each subject was subjected to the following examinations: laboratory, neurophysiology, magnetic resonance imaging of the brain, transcranial duplex, Modified Mini-mental State Examination, Cognitive Assessment Scale Inventory, Hamilton Depression Scale, and Hamilton Anxiety Scale. Results: The mean age of subjects was 25.9 ± 8.9 years. The most prevalent neurological manifestations were (in order of frequency) anxiety in 17 cases (65.4%), depression in 15 cases (57.7%), headache in 10 cases (38.5%), peripheral neuropathy in 7 cases (26.9%), seizures in 6 cases (23.1%), psychosis in 5 cases (19.2%), dementia in 4 cases (15.4%), radiculopathy in 4 cases (15.4%), myositis in 3 cases (11.5%), and stroke in 2 cases (7.7%). There was a significant affection in amplitude of the ulnar nerve, cognitive function impairment, and electroencephalography changes. There was a significant increased mean velocity and decreased Pulsatility Index of the most studied intracranial vessels in the patients. Conclusion: The use of multimodal neurophysiological, transcranial duplex, and psychometric scales increases the sensitivity for detecting nervous system involvement.
Therapeutic Evaluation of L-Carnitine in Egyptian Children with Dilated Cardiomyopathy
Alyaa Amal Kotby,Gamal Abd El Nasser Yamamah,Abeer M. Nour El Din Abd El Baky,Ghada Mahmoud El Kassas
Journal of Medical Sciences , 2006,
Abstract: Dilated Cardiomyopathy (DCM) represents a large subset of Congestive Heart Failure (CHF) cases. It is characterized by depressed systolic function, cardiomegaly and ventricular dilatation. Carnitine is indispensable for β-oxidation of long chain fatty acid in the mitochondria but also regulates the concentration and removal of the produced acyl groups. The aim of this study was to estimate the L-Carnitine levels in dilated cardiomyopathic patients on conventional treatment for heart failure both pre and post L-carnitine therapy and to study the effect of L-carnitine as an adjuvant therapy on clinical status, ECG and echocardiographic parameters. Fourteen patients were included in the study with dilated cardiomyopathy (7 males and 7 females) on conventional treatment for heart failure with mean age of 43.64±24.06 ms. Patients included in the study were subjected to full medical history, thorough clinical examination, plain chest X- ray PA view, electrocardiography and echocardiography. Serum carnitine level were measured to all patients at the beginning of the study and repeated three months after L-carnitine therapy. Results proved that mean serum carnitine level showed a significant increase after therapy (p<0.01). Clinically, there was significant increase in effort tolerance (p<0.01) and decrease of dyspnea (p<0.05). Ventricular systolic functions were improved as assessed by EF and FS (p<0.01), in addition to reduction of the LV dimensions (p>0.05). R wave of lead V6 was also significantly reduced (p<0.05). After therapy serum carnitine level correlated significantly with the FS, LVEF and body weight (p<0.05), no other significant correlation could be detected. The study conclude that adding L-carnitine to conventional therapy in dilated cardiomyopathic children with congestive heart failure improves cardiac systolic function, increase LVEF, FS and reduce ventricular size without any recorded health hazard.
Page 1 /16619
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.