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Search Results: 1 - 10 of 462554 matches for " Fatma A. Labib "
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Effect of Some Dietary Oils and Fats on Serum Lipid Profile, Calcium Absorption and Bone Mineralization in Mice
Amr A. Rezq,Fatma A. Labib,Abd Elrahman M. Attia
Pakistan Journal of Nutrition , 2010,
Abstract: Amount and type of fats in the diet have an important effect on bone health and lipid profile. This study was conducted to investigate the effect of different types of dietary oils and fats on lipid profile, calcium absorption and bone mineralization in male mice. Mice weighing 25±5 g were divided into nine groups and fed on diets without oils or fats (control group) and containing soybean oil, corn oil, olive oil, palm oil, sunflower oil, butter, animal fat or margarine. Mice fed on diet containing soybean oil or olive oil had the lowest levels of TG, TC, LDL-c and HDL-c as compared to the other groups. Diets with palm oil, olive oil, sunflower oil, butter, animal fat or margarine caused significant decreases in the serum level of calcium as compared to the effect of diet without oils or fats. Mice fed diet containing olive oil, butter or animal fat had significant increase in bone density, while those fed diet containing soybean oil, corn oil, sunflower oil or margarine had significant decreases in femur bone density, compared to the control group. The apparent calcium absorption was significantly increased by feeding diets containing soybean oil, corn oil, palm oil, olive oil, sunflower oil, butter or animal fat. Dietary intake of vegetable oils improved lipid profile while butter, animal fat and margarine had the opposite effect. Butter and animal fats increased calcium and phosphorus deposition in femur bone more than vegetable oils.
Effect of Pomegranate (Punica granatum) Peels and It’s Extract on Obese Hypercholesterolemic Rats
Fatma Labib Ahmed Hossin
Pakistan Journal of Nutrition , 2009,
Abstract: There has been an inverse association between fiber intake and cardiovascular diseases. Dietary supplementation with nutrients rich in antioxidants is associated with inhibition of atherogenic modifications to LDL, macrophage foam cell formation and atherosclerosis. Pomegranates are a good source of polyphenols and other antioxidants. The present study was performed to evaluate the effect of pomegranate peel powder and it’s extract on lipids metabolism in hypercholesterolemic male rats. pomegranate peel powder were added to hypercholestrolemic diet by 5, 10 or 15% as dietary fiber supplemented. While pomegranate peel extract were added to hypercholestrolemic diet by 1, 2 or 3% supplemented. Forty adult male rats were assigned to eight groups for four weeks feeding period; group (1) control negative, group (2) control positive hypercholesterolemic rats, groups (3, 4 and 5) hypercholesterolemic rats fed 5, 10 or 15% pomegranate peel powder as dietary fiber supplemented and groups (6, 7 and 8) hypercholesterolemic rats fed 1,2 or 3 % pomegranate peel extract supplemented. At the end of the feeding period, animal's blood were collected for serum lipid measurements. Results showed that hypercholesterolemic rats had highly significant changes in all tested lipids parameters comparing with control negative group. all hypercholestrolemic rats administrated with different levels of pomegranate peel powder (5, 10 and 15%) had significant decrease in food consumption and body weight gain ratio comparing with control positive group. Liver, kidney spleen to body weight ratio and all tested lipid parameters except HDL had highly significant decrease for all hypercholestrolemic rats administrated with different levels of pomegranate peel powder (5, 10 and 15%) or administrated with different levels of pomegranate peel extracts (1, 2 and 3%) comparing with control positive group. In conclusion, the potent antioxidative capacity of pomegranate peel powder or it’s extract against lipid peroxidation may be the central link for the antiatherogenic effects of pomegranate peel powder or it’s extract on lipoproteins. Moreover, It suggested that, consumption of pomegranate peel powder or it’s extract my modify the risk of hypercholesterolemia and it have more potential as a health supplement rich in natural antioxidants.
Synthesis, Radioiodination and Biodistribution Evaluation of 5-(2-amimo-4-styryl pyrimidine-4-yl)-4-methoxybenzofuran-6-ol
Atteyat A. Labib
Asia Oceania Journal of Nuclear Medicine and Biology , 2013,
Abstract: This study describes the organic synthesis of 5-(2-amimo-4-styryl pyrimidine-4-yl)-4-methoxy benzofuran-6-ol (SPBF) as an example of a benzofuran derivative used as a new series of amyloid imaging agents. These benzofuran derivatives may be useful amyloid imaging agents for detecting B-amyloid plagues in the brain of Alzheimer’s disease. The precursor is 1-[6-hydroxy-4-methoxybenzofuran-5-yl]-phenyl butadiene ketone, which react with guanidine hydrochloride. The purification process was done via crystallization using solvent ethanol. The overall yield was 75% and the structure of the synthesized compound was confirmed by correct analytical and spectral data. Also, The synthesized compound was labeled with radioactive iodine -125 via electrophilic substitution reaction, in the presence of iodogen as an oxidizing agent, the labeling process was carried out at 95oC for 20min. The radiochemical yield was determined by using a thin layer chromatography and the yield was equal to 80%. Preliminary an in-vivo study examined normal mice after intravenous injection through the tail vein and the data showed the labeling compound was quickly cleared from most body organs. The radioiodinated compound showed high brain uptake.The results of this study suggest that radioiodinated (SPBF) may be useful as a brain imaging agents.
Effect of Partially Replacing Corn Meal by Wet Date on Growth Performance in Nile Tilapia (Oreochromis niloticus) Fingerlings, Diets Supplemented with Digestarom®  [PDF]
M. M. Gaber, E. H. Labib, E. A. Omar, M. A. Zaki, A. M. Nour
Journal of Geoscience and Environment Protection (GEP) , 2014, DOI: 10.4236/gep.2014.22010
Abstract: A 3-month randomized factorial design 4 × 2 (four levels 0, 15, 30, and 45%) of wet Date (WD), two levels (0 and 0.03%) of Digestarom? (D) and three replicates. The trial was conducted in twenty four glass aquaria. Ten fingerlings of Nile tilapia were placed in each aquarium with an average weight 15.40±0.3 g fish. Fish were fed twice daily (six days a week) at a rate of 3% of body weight. The results revealed that, mean final weight (g/fish), SGR (%/day), feed conversion ratio, PPV and PER, were significantly (p ≤ 0.05) affected by the levels of WD and level of D. And the best diet achieved which containing 30% WD supplemented with 0.03% D. From the above results and the economic information of these studies it can be concluded that, diet containing 30% of WD with 0.03% D exhibited the highest net profit and would seem to be the most desirable level of WD and D in the system studied.
Nonlinear Uncertain HIV-1 Model Controller by Using Control Lyapunov Function  [PDF]
Fatma A. Alazabi, Mohamed A. Zohdy
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2012, DOI: 10.4236/ijmnta.2012.12004
Abstract: In this paper, we introduce a new Control Lyapunov Function (CLF) approach for controlling the behavior of nonlinear uncertain HIV-1 models. The uncertainty is in decay parameters and also external control setting. CLF is then applied to different strategies. One such strategy considers input into infected cells population stage and the other considers input into a virus population stage. Furthermore, by adding noise to the HIV-1 model a realistic comparison between control strategies is presented to evaluate the system’s dynamics. It has been demonstrated that nonlinear control has effectiveness and robustness, in reducing virus loading to an undetectable level.
Antiphospholipid antibody syndrome and pregnancy  [PDF]
S. Errarhay, N. Hmidani, S. Mahmoud, L. Labib, H. Saadi, M. Hrandou, C. Bouchikhi, A. Banani
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.34071
Abstract:

Recurrent foetal loss in early and late stages of pregnancy is a common problem of women affected by anti-phospholipid antibody syndrome. The therapeutic scheme consisting of associating aspirin and heparin has shown an improvement of the prognosis for the next pregnancies. We report 3 cases of anti-phospholipid antibody syndrome and pregnancy, and we underline the clinical, therapeutic and prognosis features of this syndrome.

Removal of Aniline Blue from Aqueous Solutions Using Ce1-xBixCrO3 (x = 0, 0.5, 1)  [PDF]
Labib A. Awin, Mahmoud A. El-Rais, Abdunnaser M. Etorki, Najat A. Mohamed, Wesal A. Makhlof
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2018, DOI: 10.4236/ojinm.2018.81001
Abstract: The removal of aniline blue dye from aqueous solutions using the A-site doped perovskite Ce1-xBixCrO3 (x = 0, 0.5, 1) was investigated. The perovskite oxides were synthesised using Sol-Gel method and characterised by conventional powder X-ray diffraction technique. The X-ray diffraction measurements suggested that doping with Bismuth Ion influences both the crystal structure and the particle size of the oxides, and consequently affects the adsorption properties. It was found that both CeCrO3 and Ce0.5Bi0.5CrO3 compounds are orthorhombic and have approximate particle size of 87 and 36 nm respectively, whereas BiCrO3 oxide has rhombohedral space group symmetry and the particle sizes are less than 49 nm. The batch mode study demonstrated that the removal capacities of Aniline Blue at 150 min and pH = 4.3 for Ce0.5Bi0.5CrO3, CeCrO3 and BiCrO3 are 779.67, 705.45 and 440.18 mg/g respectively. The results reflect the influence of the A site doping on the adsorption properties of the oxides. The removal of Aniline Blue was found to be negatively correlated with temperature and pH.
Fabrication and characterization copper/diamond composites for heat sink application using powder metallurgy  [PDF]
Zeinab Abdel Hamid, Sayed F. Moustafa, Fatma A. Morsy, Nevien Abdel Atty khalifa, Fatma Abdel Mouez
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.311120
Abstract: Copper composites reinforced with diamond particles were fabricated by the powder metallurgical technique. Copper matrix and diamond powders were mixed mechanically, cold com- pacted at 100 bar then sintered at 900?C. The prepared powders and sintered copper/diamond composites were investigated using X-ray diffraction (XRD) and scanning electron microscope equipped with an energy dispersive X-ray analysis (SEM/EDS). The effect of diamond contents in the Cu/diamond composite on the different properties of the composite was studied. On fracture surfaces of the Cu/uncoated diamond composites, it was found that there is a very weak bonding between diamonds and pure copper matrix. In order to improve the bonding strength between copper and the reinforcement, diamond particles were electroless coated with NiWB alloy. The results show that coated diamond particles distribute uniformly in copper composite and the interface between diamond particles and Cu matrix is clear and well bonded due to the formation of a thin layer from WB2, Ni3B, and BC2 between Cu and diamond interfaces. The properties of the composites materials using coated powder, such as hardness, transverse rupture strength, thermal conductivity, and coefficient of thermal expansion (CTE) were exhibit greater values than that of the composites using uncoated diamond powder. Additionally, the results reveals that the maximum diamond incorporation was attained at 20 Vf%. Actually, Cu/20 Vf% coated diamond com- posite yields a high thermal conductivity of 430 W/mK along with a low coefficient of thermal expansion (CTE) 6 × 10–6/K.
Integrated Control of Root-Knot Nematodes, Meloidogyne spp. Infecting Sunflower and Tomato
Fatma A. M. Mostafa
Pakistan Journal of Biological Sciences , 2001,
Abstract: Castor ( Ricinus communis), the nematode - trapping fungus, A. oligospora and oxamyl were evaluated alone as well as in combination on Meloidogyne spp. infecting sunflower and tomato under greenhouse conditions. Results indicated that application of castor alone or in concomitant with A. oligospora or /and oxamyl gave better enhancement in various growth parameters such as fresh shoot length and weight whether in tomato or sunflower. Root galling was significantly suppressed in all treatments as compared with untreated plants. In sunflower, pre-planting application with castor + oxamyl gave the best results , recording a gall index of 3.50 with the highest percentage of increase in total plant fresh weight ( 81.9) . However, castor alone or integrated application of castor + A. oligospora + oxamyl or A. oligospora + oxamyl to the soil gave the best results in terms of suppression of galls and increased tomato plant growth. These results indicate that oxamyl as nematicide had no adverse effect on the predaceous activity of A. oligospora, In addition dried leaves of castor play an important role in promoting plant growth as well enhancing microorganisms in soil.
Effect of Nicotinamide on Growth and Volatile Oil Composition of Various Parts of Sweet Fennel (Foeniculum vulgare var. dulce) Plants
Fatma A. Gharib
Journal of Biological Sciences , 2002,
Abstract: Pot experiment was conducted to study the response of Foeniculum vulgare plants to foliar application of nicotinamide. Data showed that, vegetative growth, essential oil percentage of different parts and yield significantly promoted by nicotinamide treatments up to 80 mg l ̄1. Protein profile of the produced seeds and total carbohydrates were also influenced by the treatments. The most promising results with best yield and quality of fennel oil were obtained from plants treated with nicotinamide at 80 mg l ̄1 at both cuttings; essential oil yield was maximal at 1st cut (0.14 ml oil/plant); it was high in the fruiting umbels (0.93 %), low in the leaves (0.33 %), but only traces occurred in the stems ( 0.07 %). GC/MS analysis revealed that the major components of all oil samples was trans-anethole (17.32, 20.96, 59.31 % in leaf, stem, fruiting umel, respectively). The other main components namely, limonene, γ- terpinene, estagole, fenchone, α- pinene and β- pinene. The volatile oil of leaf and stem contained high amount of anis-aldehyde. These components showed some qualitative and quantitative differences under the effect of nicotinamide treatments in different parts of fennel plants.
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