Example sentences for: tocopherol

How can you use “tocopherol” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • The adherent cells in the well were washed three times with 1.0 ml of PBS, and the cells overlaid with 400 μl of lysis buffer (1% Triton X-100 in pH 7.5, 20 mM HEPES buffer with 0.1 mM EDTA), scraped, and collected into a glass vial for tocopherol analysis by HPLC, and for protein determination by the BCA protein assay (Pierce, Rockford, IL).

  • Enrichment of tocopherol (or tocopheryl quinone) in culture medium

  • If tocopheryl quinones were the only catabolic/oxidation products formed during incubation with the macrophages, then the nmoles of tocopherol plus the nmoles of tocopheryl quinone in the medium and in the cells should be constant.

  • This suggests that a considerable amount of tocopherol is lost during incubation by catabolism/oxidation.

  • It is a mixture of eight stereoisomers in equal amounts designated "dl" or all-rac tocopherol and does have antioxidant properties [ 4 ] . Thus, different forms of vitamin E can have different antioxidant properties as well as differences in their absorption, distribution, and metabolism [ 4 ] . There are also reports that some forms of vitamin E have activity against cancer cells in vitro [ 3 5 ] . For example, tocotrienol and vitamin E succinate are reported to have antiproliferative activity in human cancer cells whereas some forms of vitamin E are reported to induce apoptosis in cancer cell types but not in normal cell types [ 3 ] . Specifically, these apoptogenic forms include RRR-α-tocopheryl succinate and RRR-δ-tocopherol while the α, β, and γ tocopherol and acetate derivatives of tocopherol were not apoptogenic [ 3 ] . There are few reports on the use of vitamin E for treating tumorous cancers in vivo but the results are inconsistent [ 4 5 6 7 8 9 10 ] . It is therefore essential that the form of vitamin E used in any research study as well as the dosage and the mode of administration be defined.


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