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Mady, Amr Hussein,Baynosa, Marjorie Lara,Tuma, Dirk,Shim, Jae-Jin Elsevier BV 2017 Applied Catalysis B Vol.203 No.-
<P><B>Abstract</B></P> <P>Nanocomposites of Ag-ZnFe<SUB>2</SUB>O<SUB>4</SUB>@reduced graphene oxide (rGO) were synthesized using a one-pot microwave-assisted self-assembly method. The morphology and structure of the Ag-ZnFe<SUB>2</SUB>O<SUB>4</SUB>@rGO nanocomposites were characterized. The nanocomposites formed with 15.2wt% rGO showed excellent adsorption properties and high photocatalytic activity for the degradation of methylene blue (MB), rhodamine B (RhB), and methyl orange (MO). The synergistic interactions between Ag, ZnFe<SUB>2</SUB>O<SUB>4</SUB>, and rGO decreased the aggregation of the nanoparticles (NPs) and increased the surface area, resulting in better absorption in both UV and visible light. Such a structure was helpful for separating the photo-excited electron-hole pairs and accelerating electron transfer. Electrochemical impedance spectroscopy (EIS) revealed a smaller resistance in the solid-state interface layer and charge transfer on the composite surface than that of the bare ZnFe<SUB>2</SUB>O<SUB>4</SUB> NPs and ZnFe<SUB>2</SUB>O<SUB>4</SUB>@rGO nanocomposite. The Ag-ZnFe<SUB>2</SUB>O<SUB>4</SUB>@rGO nanocomposite could be recovered easily by a magnet and reused five times with no significant decrease in photocatalytic activity. The as-prepared Ag-ZnFe<SUB>2</SUB>O<SUB>4</SUB>@rGO nanocomposite catalyst could be applied to the removal of hard-to-degrade waste materials owing to its high efficiency in both UV and visible light and its excellent reusability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ag-ZnFe<SUB>2</SUB>O<SUB>4</SUB>@rGO composite was synthesized by one-pot microwave method in 10min. </LI> <LI> The composite had a very large surface area and showed very high performance. </LI> <LI> The composite decomposed 20ppm MB very fast within 30min under visible light only. </LI> <LI> The composite showed excellent recyclability and reusability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Mady, Amr Hussein,Baynosa, Marjorie Lara,Tuma, Dirk,Shim, Jae-Jin Elsevier 2019 Applied Catalysis B Vol.244 No.-
<P><B>Abstract</B></P> <P>Three-dimensional (3D) γ-MnO<SUB>2</SUB>@ZnFe<SUB>2</SUB>O<SUB>4</SUB>/reduced graphene oxide (rGO) nanohybrids were synthesized using a one-pot hydrothermal self-assembly method. The morphology and properties of the nanohybrids were investigated. The synergistic interactions among γ-MnO<SUB>2</SUB>, ZnFe<SUB>2</SUB>O<SUB>4</SUB>, and rGO resulted in 3D nanoflakes distributed uniformly in the rGO structure with a thickness of approximately 2–5 nm, leading to a high surface area. The nanohybrid containing 10 wt. % rGO exhibited superior catalytic activities for phenol degradation through the activation of peroxymonosulfate (PMS) to generate active sulfate radicals ( S O 4 • – ). Typically, 50 mL of a 20 ppm phenol solution was degraded completely and 85% of the carbon content had been mineralized in 30 min at 25 °C using 10 mg of the nanohybrid. The nanohybrid could be recovered easily using a magnet and reused, maintaining high stability during catalytic oxidation. The 3D γ-MnO<SUB>2</SUB>@ZnFe<SUB>2</SUB>O<SUB>4</SUB>/rGO nanohybrid catalyst could be applied to the removal of hard-to-degrade waste materials owing to its high efficiency and excellent reusability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> 3D γ-MnO<SUB>2</SUB>@ZnFe<SUB>2</SUB>O<SUB>4</SUB>/rGO nanohybrid was synthesized by one-pot hydrothermal method. </LI> <LI> The hybrid had a very large surface area and showed very high performance. </LI> <LI> The hybrid decomposed 20 ppm phenol in 30 min in the presence of PMS. </LI> <LI> 95% of the carbon content was mineralized in 3 h. </LI> <LI> The hybrid showed excellent recyclability and reusability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Hussein, A.M.,Mady, A.H.,Mahmoud, S.,Shim, J.-J.,Yehia, F.Z. Elsevier 2019 Journal of photochemistry and photobiology Chemist Vol.377 No.-
<P><B>Abstract</B></P> <P>Phosphomolybdic (PMo) and vanadium-containing phosphomolybdic (PV<SUB>2</SUB>Mo) acids were synthesized and supported on HZSM-5 zeolite via a wet impregnation technique and used as photocatalysts for the purification of terephthalic acid (TA) via an economic process. Nowadays, purified TA can be obtained from crude TA due to their great commercial importance by separating 4-carboxybenzaldehyde (4-CBA), which represents high environmental toxicity and negatively affects the applications of TA. For these reasons, conversion of 4-CBA to TA is highly desirable for both enhancing the efficiency of purified TA production and environmental reasons. The synthesized catalysts were characterized by XRD, FTIR, Raman spectroscopy, BET, SEM, and TEM. The purification process was carried out by under different parameters as VUV irradiation, persulfate (PS), time, and different types of catalysts (PMo or PV<SUB>2</SUB>Mo)/HZSM-5. This kind of combination showed complete removal of the 4-CBA with a high yield of PTA in 2 h. The high efficiency attributed to the acidity of the polyoxometalates/HZSM-5, which increase the selectivity to oxidize 4-CBA at room temperature and much shorter reaction time compared to other common methods.</P> <P><B>Highlights</B></P> <P> <UL> <LI> PMo or PV<SUB>2</SUB>Mo / HZSM-5 used as a photocatalyst for the economic purification of CTA. </LI> <LI> Catalyst achieve complete purification for CTA at 2 h and at room temperature. </LI> <LI> PV<SUB>2</SUB>Mo/HZSM-5 show no significant loss of catalytic activity for four consecutive. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
( Yeonjung Ha ),( Mohamed A. Mohamed Ali ),( Molly M. Petersen ),( William S. Harmsen ),( Terry M. Therneau ),( Han Chu Lee ),( Baek-yeol Ryoo ),( Sally Bampoh ),( Kenneth A. Valles ),( Mohamad Mady ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: The ability of the pretreatment lymphocyte to monocyte ratio (LMR) to predict outcomes of patients with hepatocellular carcinoma (HCC) receiving sorafenib is not conclusively determined. Methods: We retrospectively studied patients treated with sorafenib for HCC in two tertiary referral centres in Asia and North America. Primary endpoints were overall survival (OS) and progression-free survival (PFS). Predictive factors for the outcomes were determined by Cox proportional hazards models. A risk-assessment tool was developed. Results: Compared to the North America cohort, the Asia cohort was more heavily pretreated (72.1% vs. 35.2%; P<0.001), had higher hepatitis B virus infection (87.6% vs. 5.6%; P<0.001), and more distant metastases (83.2% vs. 25.4%; P<0.001). Lower monocyte count in the Asia cohort (median, 462.7 vs. 600.0/μL; P=0.023) resulted in a higher LMR (median, 2.6 vs. 1.8; P<0.001). High LMR was associated with a significantly higher OS (hazard ratio [HR], 0.88; 95% confidence interval [CI], 0.81-0.97; P=0.007). This was confirmed in a sensitivity analysis including patients treated in Asia only (HR, 0.89; 95% CI, 0.81-0.97; P=0.010). An OS nomogram was constructed with following variables selected in the multivariate Cox model: LMR, treatment location, previous treatment, performance status, AFP, lymph node metastasis, and Child-Pugh score. The concordance score was 0.71 (95% CI, 0.69-0.73). LMR did not predict PFS. Conclusions: Pretreatment LMR predicts OS in HCC patients treated with sorafenib. Our OS nomogram, incorporating LMR, can be offered to clinicians to improve their ability to assess prognosis, strengthen the prognosis-based decision making, and inform patients in the clinic.
Hypoglycemic Effects of Eryngium Creticum
Jaghabir, Madi The Pharmaceutical Society of Korea 1991 Archives of Pharmacal Research Vol.14 No.4
E. creticum has been used in folk medicine in Jordan as a remedy for scorpion stings in the rural areas and as a hypoglycemic agent. The hypoglycemic activity of an aquous decoction of plant arial parts of E. creticum was tested in normoglycemic and streptozocin-hyperglycemic rats. Results indicate that those extract caused significant reductions in blood glucose concentration when given orally.
Ali Madi Almajwal,Mohamed Farouk Elsadek 한국영양학회 2015 Nutrition Research and Practice Vol.9 No.1
BACKGROUND/OBJECTIVES: Red grape seeds as functional food are a good source of important bioactive components such as phenolics and antioxidants, which decrease oxidative stress that contributes to the pathogenesis of hepatotoxicity. The current study was conducted in order to evaluate the protective effect of red grape dried seeds (RGDS) on antioxidant properties, lipid metabolism, and liver and kidney functions of rats with paracetamol (750 mg/kg) induced hepatotoxicity. MATERIALS/METHODS: RGDS was added to the basal diet at 5, 10, and 20%. Thirty five adult male rats were assigned to five groups (n = 7) for a six-week feeding period; group (1) normal control, group (2) induced control, groups (3, 4, and 5) fed a diet with RGPS at different levels, 5, 10, and 20%, respectively. At the end of the feeding period, animals’ blood and tissues were collected for estimation of serum lipid profile, serum liver, and kidney biomarkers. The protection was measured by detecting lipid peroxidation (LPO), glutathione (GSH), superoxide dismutase (SOD), Catalase (CAT) (in liver tissues), and liver histological examination. RESULTS: The results showed a significant (P < 0.05) decrease in levels of serum cholesterol, triglycerides, low density lipoprotein (LDL-C), and very low density lipoprotein (VLDL-C), with a significant increase in level of high density lipoprotein (HDL-C) for RGDS groups compared to induced control. Rats administered a diet containing RGDS levels produced significant (P < 0.05) hepatoprotection by decreasing the activities of liver enzymes, kidney parameters, and lipid peroxidation, while levels of GSH, SOD, and CAT were increased significantly to near the normal levels. CONCLUSION: The RGDS 20% group was more effective than others against hepatotoxicity of paracetamol, which may be attributed to RGDS total phenols and antioxidant contents, which were 1.438 mg and 1.231 mg, respectively.