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Theonellamide G, a Potent Antifungal and Cytotoxic Bicyclic Glycopeptide from the Red Sea Marine Sponge Theonella swinhoei
- D. Youssef, L. A. Shaala, G. Mohamed, J. Badr, F. H. Bamanie, S. Ibrahim
- Chemistry, BiologyMarine drugs
- 1 April 2014
The polar fraction of the organic extract of the Red Sea sponge Theonella swinhoei yielded a new bicyclic glycopeptide, theonellamide G, which showed potent antifungal activity towards wild and amphotericin B-resistant strains of Candida albicans and cytotoxic activity against the human colon adenocarcinoma cell line.
Poultry as a vector for emerging multidrug resistant Enterococcus spp.: First report of vancomycin (van) and the chloramphenicol-florfenicol (cat-fex-cfr) resistance genes from pigeon and duck faeces.
Antimicrobial Resistance, Biofilm Formation and mecA Characterization of Methicillin-Susceptible S. aureus and Non-S. aureus of Beef Meat Origin in Egypt
The analysis of the results stipulates, that buffaloes and cattle could be MRSA dispersers and that this theme is not specific to pigs, as although oxacillin resistance may be absent yet, the MSSA may carry the virulence determinants which could be a source of perilous S. aureus for the human community.
Penicillivinacine, antimigratory diketopiperazine alkaloid from the marine-derived fungus Penicillium vinaceum
Prevalence and antimicrobial resistance profile of Staphylococcus species in chicken and beef raw meat in Egypt.
The results indicate that chicken and beef raw meat are an important source of antibiotic-resistant CPS and CNS and may indicate the dissemination of vancomycin resistance in the community and imply food safety hazards.
First detailed quantification of silymarin components in the leaves of Silybum marianum cultivated in egypt during different growth stages
Summary A high performance liquid chromatographic method was developed for the quantitative determination of the active components of silymarin in the leaves of Silybum marianum during different…
Antimicrobial resistance and virulence characterization of Staphylococcus aureus and coagulase-negative staphylococci from imported beef meat
- K. Osman, A. Álvarez‐Ordoñez, M. Elhadidy
- Biology, MedicineAnnals of Clinical Microbiology and…
- 10 May 2017
The findings highlight the potential risk for consumers, in the absence of actionable risk management information systems, of imported foods and advice a strict implementation of international standards by different venues such as CODEX to avoid the increase in prevalence of coagULase positive and coagulase negative Staphylococcus isolates and their antibiotic resistance genes in imported beef meat at the Egyptian market.
Validated HPLC and HPTLC methods for simultaneous determination of colchicine and khellin in pharmaceutical formulations.
- G. Hadad, J. Badr, Khaled El-Nahriry, H. Hassanean
- ChemistryJournal of chromatographic science
- 1 March 2013
Both methods revealed reasonable validation parameters concerning selectivity, linearity, accuracy, precision and limits of detection and quantitation about colchicine and khellin.
Bioactive alkaloids from the Red Sea marine Verongid sponge Pseudoceratina arabica
Bioactive 2(1H)-Pyrazinones and Diketopiperazine Alkaloids from a Tunicate-Derived Actinomycete Streptomyces sp.
NMR data for compounds 4 and 6 provide further understanding about the chemistry and bioactivities of the alkylated 2(1H)-pyrazinone derivatives.