Vikash Sewram

Summary

Affiliation: Medical Research Council
Country: South Africa

Publications

  1. ncbi request reprint Improving extraction of fumonisin mycotoxins from Brazilian corn-based infant foods
    Vikash Sewram
    PROMEC Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Food Prot 66:854-9. 2003
  2. ncbi request reprint Assessing chronic exposure to fumonisin mycotoxins: the use of hair as a suitable noninvasive matrix
    V Sewram
    PROMEC Unit, Medical Research Council, Tygerberg, South Africa
    J Anal Toxicol 25:450-5. 2001
  3. ncbi request reprint Fumonisin mycotoxins in human hair
    Vikash Sewram
    PROMEC Unit, Medical Research Council, Tygerberg, South Africa
    Biomarkers 8:110-8. 2003
  4. ncbi request reprint Determination of the mycotoxin fumonisin B1 in maize by reversed-phase thin-layer chromatography: a collaborative study
    G S Shephard
    PROMEC Unit, Medical Research Council, PO Box 19070, Tygerberg 7505, South Africa
    Food Addit Contam 21:498-505. 2004
  5. ncbi request reprint Mycotoxin contamination of dietary and medicinal wild plants in the Eastern Cape Province of South Africa
    Vikash Sewram
    PROMEC Unit and Biostatistics Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Agric Food Chem 54:5688-93. 2006
  6. pmc Brahmarasayana protects against Ethyl methanesulfonate or Methyl methanesulfonate induced chromosomal aberrations in mouse bone marrow cells
    Kanive Parashiva Guruprasad
    Division of Biotechnology, Manipal Life Sciences Centre, Manipal University, Planetarium, CoMPLEX, Manipal, Karnataka 576 104, India
    BMC Complement Altern Med 12:113. 2012
  7. ncbi request reprint Production of fumonisin B and C analogues by several fusarium species
    Vikash Sewram
    PROMEC Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Agric Food Chem 53:4861-6. 2005
  8. ncbi request reprint Supercritical fluid extraction and analysis of compounds from Clivia miniata for uterotonic activity
    V Sewram
    Department of Chemistry and Aplied Chemistry, University of Natal, Durban, South Africa
    Planta Med 67:451-5. 2001
  9. ncbi request reprint Determination of the Fusarium mycotoxins, fusaproliferin and beauvericin by high-performance liquid chromatography-electrospray ionization mass spectrometry
    V Sewram
    Programme on Mycotoxins and Experimental Carcinogenesis, Medical Research Council, Tygerberg, South Africa
    J Chromatogr A 858:175-85. 1999
  10. ncbi request reprint Determination of the mycotoxin moniliformin in cultures of Fusarium subglutinans and in naturally contaminated maize by high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry
    V Sewram
    Programme on Mycotoxins and Experimental Carcinogenesis PROMEC, Medical Research Council, Tygerberg, South Africa
    J Chromatogr A 848:185-91. 1999

Collaborators

Detail Information

Publications17

  1. ncbi request reprint Improving extraction of fumonisin mycotoxins from Brazilian corn-based infant foods
    Vikash Sewram
    PROMEC Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Food Prot 66:854-9. 2003
    ..The findings indicate that matrix interferences play a significant role in the extractability, cleanup, and chromatography of the fumonisins...
  2. ncbi request reprint Assessing chronic exposure to fumonisin mycotoxins: the use of hair as a suitable noninvasive matrix
    V Sewram
    PROMEC Unit, Medical Research Council, Tygerberg, South Africa
    J Anal Toxicol 25:450-5. 2001
    ..This relationship indicates that hair can provide an easily applicable non-invasive matrix for assessing chronic exposure to fumonisin mycotoxins...
  3. ncbi request reprint Fumonisin mycotoxins in human hair
    Vikash Sewram
    PROMEC Unit, Medical Research Council, Tygerberg, South Africa
    Biomarkers 8:110-8. 2003
    ..No samples contained more than trace levels of FB(3). Recoveries from spiked hair samples using this method ranged from 81% to 101%, demonstrating the applicability of hair analysis in assessing human exposure to fumonisin mycotoxins...
  4. ncbi request reprint Determination of the mycotoxin fumonisin B1 in maize by reversed-phase thin-layer chromatography: a collaborative study
    G S Shephard
    PROMEC Unit, Medical Research Council, PO Box 19070, Tygerberg 7505, South Africa
    Food Addit Contam 21:498-505. 2004
    ..1-41.7% and between-laboratory relative standard deviations of 35.0-63.3%, the method can be considered semiquantitative. The mean recovery achieved by participants at a spiking level of 2.00 mg kg(-1) was 74.5%...
  5. ncbi request reprint Mycotoxin contamination of dietary and medicinal wild plants in the Eastern Cape Province of South Africa
    Vikash Sewram
    PROMEC Unit and Biostatistics Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Agric Food Chem 54:5688-93. 2006
    ..These results indicate that exposure to fumonisin B1 is much more widespread than initially thought and is the first report of mycotoxin contamination in South African medicinal and dietary wild plants...
  6. pmc Brahmarasayana protects against Ethyl methanesulfonate or Methyl methanesulfonate induced chromosomal aberrations in mouse bone marrow cells
    Kanive Parashiva Guruprasad
    Division of Biotechnology, Manipal Life Sciences Centre, Manipal University, Planetarium, CoMPLEX, Manipal, Karnataka 576 104, India
    BMC Complement Altern Med 12:113. 2012
    ..It has been reported that rasayanas have immuno-modulatory, antioxidant and antitumor functions, however, the genotoxic potential and modulation of DNA repair of many rasayanas have not been evaluated...
  7. ncbi request reprint Production of fumonisin B and C analogues by several fusarium species
    Vikash Sewram
    PROMEC Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Agric Food Chem 53:4861-6. 2005
    ..verticillioides and F. proliferatum as well as the strain of the unidentified species can simultaneously produce both FB and FC analogues...
  8. ncbi request reprint Supercritical fluid extraction and analysis of compounds from Clivia miniata for uterotonic activity
    V Sewram
    Department of Chemistry and Aplied Chemistry, University of Natal, Durban, South Africa
    Planta Med 67:451-5. 2001
    ..The pharmacological mode of action of 5-hydroxymethyl-2-furancarboxaldehyde was assessed using two receptor agonists and antagonists. This compound was found to mediate its effect through cholinergic receptors...
  9. ncbi request reprint Determination of the Fusarium mycotoxins, fusaproliferin and beauvericin by high-performance liquid chromatography-electrospray ionization mass spectrometry
    V Sewram
    Programme on Mycotoxins and Experimental Carcinogenesis, Medical Research Council, Tygerberg, South Africa
    J Chromatogr A 858:175-85. 1999
    ..Application of this method to naturally contaminated maize samples from the Transkei region of South Africa showed FUS at levels of 8.8-39.6 microg/kg and BEA at 7.6-238.8 microg/kg...
  10. ncbi request reprint Determination of the mycotoxin moniliformin in cultures of Fusarium subglutinans and in naturally contaminated maize by high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry
    V Sewram
    Programme on Mycotoxins and Experimental Carcinogenesis PROMEC, Medical Research Council, Tygerberg, South Africa
    J Chromatogr A 848:185-91. 1999
    ..This is the first report on the application of LC-MS to the analysis of moniliformin in cultures of F. subglutinans and in naturally contaminated maize...
  11. ncbi request reprint The uterotonic activity of compounds isolated from the supercritical fluid extract of Ekebergia capensis
    V Sewram
    Department of Chemistry and Applied Chemistry, University of Natal, Durban, South Africa
    J Pharm Biomed Anal 24:133-45. 2000
    ....
  12. ncbi request reprint Determination of patulin in apple juice by high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry
    V Sewram
    Programme on Mycotoxins and Experimental Carcinogenesis PROMEC, Medical Research Council, Tygerberg, South Africa
    J Chromatogr A 897:365-74. 2000
    ..The MS data for the spiked samples compared well to the UV data and when plotted against each other displayed a correlation coefficient (R) of 0.99...
  13. ncbi request reprint Quantitation of ochratoxin A in South African wines
    Gordon S Shephard
    PROMEC Unit, Medical Research Council, P O Box 19070, Tygerberg 7505, South Africa
    J Agric Food Chem 51:1102-6. 2003
    ..The highest level found in a locally purchased wine was 0.39 microg/L in a blend of local and imported Spanish red wine. Of the eight Italian wines analyzed, only two red wines were contaminated above the suggested maximum level...
  14. ncbi request reprint Structure and natural occurrence of stereoisomers of the fumonisin B series mycotoxins
    Wentzel C A Gelderblom
    Programme on Mycotoxins and Experimental Carcinogenesis, Medical Research Council, Tygerberg 7505, South Africa
    J Agric Food Chem 55:4388-94. 2007
    ..The identification of members of the 3-epi-fumonisin B series provides insight into the order and selectivity of steps in fumonisin biosynthesis...
  15. ncbi request reprint Production of the mycotoxins fusaproliferin and beauvericin by South African isolates in the Fusarium section Liseola
    G S Shephard
    Programme on Mycotoxins and Experimental Carcinogenesis PROMEC, Medical Research Council, P O Box 19070, Tygerberg 7505, South
    J Agric Food Chem 47:5111-5. 1999
    ....
  16. ncbi request reprint Biomarkers of exposure to fumonisin mycotoxins: a review
    G S Shephard
    PROMEC Unit, Medical Research Council, PO Box 19070, Tygerberg 7505, South Africa
    Food Addit Contam 24:1196-201. 2007
    ..The lower exposures from human diets, as compared with doses in experimental animals, have made detection of changes in these sphingoid biomarkers problematic...
  17. ncbi request reprint Maté consumption and the risk of squamous cell esophageal cancer in uruguay
    Vikash Sewram
    PROMEC Unit, Medical Research Council, Tygerberg, South Africa
    Cancer Epidemiol Biomarkers Prev 12:508-13. 2003
    ..8 and 12.6% respectively, and 14.9% was attributable to high maté consumption at high temperature...