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| 1 | Aqueous extracts of microalgae exhibit antioxidant and anticancer activities显示文摘Objective:To investigate the antioxidant and anticancer activities of aqueous extracts of nine microalgal species.Methods:Variable percentages of major secondary metabolites(total phenolic content,terpenoids and alkaloids) as well as phycobiliprotein pigments(phycocyanin, allophycocyanin and phycoerythrin) in the aqueous algal extracts were recorded.Antioxidant activity of the algal extracts was performed using 2,2 diphenyl-1-picrylhydrazyl(DPPH) test and 2,2'azino-bis(ethylbenzthiazoline-6-sulfonic acid(ABTS.) radical cation assay.Anticancer efficiency of the algal water extracts was investigated against Ehrlich Ascites Carcinoma cell(EACC) and Human hepatocellular cancer cell line(HepG2).Results:Antioxidant activity of the algal extracts was performed using DPPH test and ABTS.^+ radical cation assays which revealed 30.1-72.4%and 32.0-75.9%respectively.Anticancer efficiency of the algal water extracts was investigated against Ehdich Ascites Carcinoma Cell(EACC) and Human Hepatocellular cancer cell line(HepG2) with an activity ranged 87.25%and 89.4%respectively.Culturing the promising cyanobacteria species;Nostoc muscorum and Oscillatoria sp.under nitrogen stress conditions(increasing and decreasing nitrate content of the normal BG11 medium,1.5 g/L),increased nitrate concentration(3,6 and 9 g/L) led to a remarkable increase in phycobilin pigments followed by an increase in both antioxidant and anticancer activities in both cyanobacterial species.While the decreased nitrate concentration(0.75,0.37 and 0.0 g/L) induced an obvious decrease in phycobilin pigments with complete absence of allophycocyanin in case of Oscillatoria sp.Conclusions:Nitrogen starvation(0.00 g/L nitrate) induced an increase and comparable antioxidant and anticancer activities to those cultured in the highest nitrate content. | Sanaa MM Shanab Soha SM Mostafa Emad A Shalaby Ghada I Mahmoud | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，8： | 6 |
| 2 | Zinc, ferritin, mag-nesium and copper in a group of Egyptian children with attention deficit hyperactivity disorder显示文摘 | Mahmoud MM El-Mazary AA Maher RM | 2011 | Ital J Pediatr2011，37，： | 1 |
| 3 | Bioremediation of aflatoxin by some reference fungal strains显示文摘 | Hussein HES Hesham MM Mahmoud E | 2007 | Polish J Micro- biol2007，56，3： | 1 |
| 4 | Production of a biologically active novel goldfish growth hormone in Escherichia coli显示文摘 | Mahmoud SS Wang SL Moloney MM | 1998 | Comparative Biochemistry and Physiology Part B1998，120，： | 1 |
| 5 | Differential efflcacies of Nomuraea Rileyi and lsaria fumosorosea on some serious pests and the pests efficient predator prevailing in tomato fields in Egypt 显示文摘 | Maher MM Mahmoud SM | 2013 | Journal of Plant Protect and Research2013，53，2： | 1 |
| 6 | External cephal- ic version for breech presentation at term: predictors of suc- cess, and impact on the rate of caesarean section显示文摘 | Hussin OA Mahmoud MA Abdel-Fattah MM | 2013 | East Medi- terr Health J2013，19，2： | 1 |
| 7 | Knowledge and attitude toward HIV voluntary counseling and testing services among pregnant women attending an antenatal clinic in Sudan 显示文摘 | Mahmoud MM Nasr AM Gassmelseed DA | 2007 | J Med Virol2007，79，5： | 1 |
| 8 | Optimum Load Shedding for Avoiding Steady-state Voltage Instability显示文摘 | El-SLADEL MZ MAHMOUD GA DESSOUKY MM | 1999 | Electric Power Systems Research1999，50，2： | 1 |
| 9 | External cephalic version for breech presentation at term:predictors of success,and impact on the rate of caesarean section显示文摘 | Hussin OA Mahmoud MA Abdel-Fattah MM | 2013 | East Mediterr Health J2013，19，2： | 1 |
| 10 | Cerebrospinolfluid prostaglandins,interleuken-1β,and tumor necrosis factor inbacterial meningitis显示文摘 | Mahmoud MM Octavio R Saez-Liorens X | 1990 | Am J Dis Child1990，144，8： | 1 |
| 11 | External cephalic version for breech presentation at term: predictors of success, and impact on the rate of caesarean section显示文摘 | Hussin OA Mahmoud MA Abdel-Fattah MM | 2013 | East Mediterr Health J2013，19，： | 1 |
| 12 | Synthesis,analgesic,anti-inflammatory,and antimicrobial activity of some novel pyrimidoquinolin-4-ones显示文摘 | El-Gazzar AR El-Enany MM Mahmoud MN | 2008 | Bioorg Med Chem2008，16，6： | 1 |
| 13 | Thepotential protective role of alpha-lipoic acid against acetaminophen-induced hepatic and renal damage显示文摘 | Abdel-Zaher AO Abdel-Hady RH Mahmoud MM | 2008 | Toxicology2008，243，3： | 1 |
| 14 | 显示文摘 | Kawano MM Mahmoud MS Huang N | 1996 | Blood1996，88，： | 1 |
| 15 | Purified murine islet allografts: islet engraftment as influenced by implantation site and glucotoxicity显示文摘 | Mahmoud IM Gabr MM Refaie AF | 1998 | Transplant Proc1998，30，2： | 1 |
| 16 | Purifiedmurine isletallografts:islet engraftment as influenced by implantation site andglucotoxicity显示文摘 | Mahmoud IM Gabr MM Refaie AF | 1998 | Transplant Proc1998，30，2： | 1 |
| 17 | Evaluation of some markers of subclinical atherosclerosis in Egyptian young adult males with abdominal obesity 显示文摘 | Abdou AS Magour GM Mahmoud MM | 2009 | Br J Biomed Sci2009，66，3： | 1 |
| 18 | Prevalence of Fasciola infection among school children in Sharkia Govemorate, Egypt 显示文摘 | Hassan MM Moustafa NE Mahmoud LA | 1995 | J Egypt Soc Parasilol1995，25，2： | 1 |
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