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Articles by Karem Aly Fouda
Total Records ( 3 ) for Karem Aly Fouda
  Doha A. Mohamed , Minar Mahmoud Hassanein , Tamer Mohammed El-Messery , Mohamed Tawfeek Fouad , Marwa Mohamed El-Said , Karem Aly Fouda and Adel Gabr Abdel-Razek
  Background and Objective: Olive pomace (OP) is the by-product of olive oil production. The OP contains large amount of phenolic compounds. The aim of the present study was to investigate the anti-diabetic effect of yoghurt supplemented with probiotics and olive pomace extract (OPE) in diabetic rats. Materials and Methods: Ultrasonic-assisted method was used for extraction of OP. Total phenolic content of OPE was estimated. The antibacterial activity of OPE was determined. Yoghurt supplemented with probiotics and OPE was prepared. Antioxidant activity, titratable acidity, water holding capacity (WHC) and organoleptic properties were evaluated in yoghurt. Anti-diabetic effect of yoghurt against type-2 diabetes was evaluated in rats. Blood samples were collected for determination of plasma glucose, insulin, lipid profile, plasma markers of oxidative stress, tumor necrosis factor-α, liver and kidney functions. Data were analyzed statistically using the one-way analysis of variance (ANOVA) followed by Duncan’s test. Results: The OPE contains 720 mg gallic acid equivalent g–1 dry weight. The HPLC analysis revealed the presence of many phenolic compounds such as vanillin and sinapic acid in OPE. OPE possess antibacterial effect against pathogenic bacteria. Antioxidant activity of yoghurt increased with the increment in OPE concentration. During storage the pH and acidity of yoghurt showed continuous decrease and increase, respectively. The WHC of fresh yoghurt decreased slightly with increasing OPE concentration, while WHC increased during storage. Hardness of yoghurt was affected non-significantly with increasing the concentration of OPE and storage periods until the 14th day. Organoleptic results revealed that yoghurt could be supplemented with OPE up to 1.5%. Diabetic rats showed significant changes in plasma glucose, insulin, lipid profile, TNF-α, oxidative stress markers and kidney function. Oral administrations of yoghurt supplemented with probiotic and OPE to diabetic rats showed significant improvement in all the studied biochemical parameters with different degrees. Conclusion: Yoghurt supplemented with probiotics and 1.5% OPE was the most promising in improving type-2 diabetes in diabetic rats.
  Sahar Y. Al-Okbi , Ahmed M.S. Hussein , Hagar F.H. Elbakry , Karem Aly Fouda , Khaled F. Mahmoud and Mohamed E. Hassan
  Background and Objective: Dyslipidemia is a major health problem that may lead to cardiovascular diseases (CVDs). In the present research, a biological experiment was run on dyslipidemic rats to study the health benefits of the volatile oils (VOs) of fennel and rosemary in its original and nano-form using chitosan as carrier. Materials and Methods: Rats were divided into 6 groups; normal control, dyslipidemic control and 4 test groups with dyslipidemia and treated by VOs of fennel and rosemary and their respective nano-forms separately. Glucose tolerance test was carried out after 4 weeks. Parameters reflecting oxidative stress/antioxidant plasma catalase, malondialdehyde (MDA) and blood uric acid, were assessed. Plasma lipid profile and tumor necrosis factor alpha (TNF-α) as inflammatory biomarker were determined. Liver and kidney function were assessed as determinant of the safety of the different VO forms. Twenty four hour urinary volume was measured to assess creatinine clearance and to evaluate the possible diuretic activity of the VOs. Results: Dyslipidemic control rats showed dyslipidemia, increased CVDs risk, liver dysfunction, elevated MDA and TNF-α with marked increase in blood sugar after half an hour of glucose ingestion compared to normal control. Treatment with the four VOs forms improved the majority of the biochemical parameters. Conclusion: All treatment showed cardio and hepato- protective effect and safety towards kidney and blood sugar. Oxidative stress and inflammatory biomarkers were significantly improved by the different treatments; both VO forms of fennel were more efficient in ameliorating inflammation.
  Doha A. Mohamed , Karem Aly Fouda and Rasha S. Mohamed
  Background and Objective: Non-alcoholic fatty liver disease (NAFLD) is not only the most common cause of liver diseases in humans but also it may complicate and become a risk factor for liver cancer. The present work aimed to evaluate the anticancer activity (in vitro) of quinoa and safflower seeds powder and their beneficial effects against NAFLD (in vivo). Materials and Methods: Proximate analysis, fatty acids profile, total phenolic and phytic acid of quinoa and safflower seeds were assessed. Also their anticancer activities (in vitro) against liver cancer were evaluated. The preventive effect of both seeds on NAFLD was evaluated using twenty four male rats. NAFLD was induced in rats by high fructose diet (HFD) for 4 weeks. The effects of HFD and HFD supplemented with 20% quinoa or safflower powder on plasma and liver lipids, lipid peroxidation, total protein, albumin as well as liver and kidney functions were determined. Results: Quinoa seeds powder was promising in cytotoxicity against hepatocarcinoma cell line HEPG2 (IC50 was 14.6 μg). Feeding rats on HFD produced dyslipidemia and significant increase in liver functions and lipid peroxidation with significant elevation in liver triglycerides and total cholesterol. Quinoa and safflower seeds powder produced improvement in the biochemical parameters with different degrees. Conclusion: Quinoa and safflower seeds powder possessed cytotoxicity against hepatocarcinoma cell line HEPG2 and afford hepato-protection against NAFLD.
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