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dc.contributor.advisorMoore, D. Blaine, 1972-
dc.contributor.advisorPregenzer, Jeff
dc.contributor.authorBooth, Sarah
dc.date.accessioned2011-12-07T15:49:17Z
dc.date.available2011-12-07T15:49:17Z
dc.date.issued2007
dc.identifier.urihttp://hdl.handle.net/10920/24255
dc.descriptionv, 45 p.en_US
dc.description.abstractGlutathione (GSH) is a powerful antioxidant that is vital to cell health to prevent oxidative stress and toxicity. One mechanism of detoxification is through conjugation by glutathione S-transferase (GST) to harmful reactive intermediaries. Drugs, food, environmental pollutants, and other substances can enter the body and produce reactive intermediaries when metabolized, and subsequently alter the levels of GSH in cells, possibly causing cell death, making the effect substances have on GSH concentration of vital importance. At CeeTox, a toxicology testing lab in Kalamazoo, MI, the monochlorobimane-GSH assay is used to assess candidate drug compounds toxicity by measuring GSH concentration after metabolism through conjugation to fluorescent dye monochlorobimane (mBCI). When the mBCI-GSH assay was performed with human microsomes, GSH levels were depleted, evidenced by reduced fluorescence signal, giving confounding information on compound toxicity. Through testing many compounds and running the assay using a range of GSH concentrations, a new procedure was developed. By increasing the GSH concentration to 200 J.lM in samples with human microsomes, and adding a pre-incubation step with reduced nicotinamide adenine dinucleotide phosphate (NADPH) and l-aminobenzotriazole (ABT), the signal was higher while still allowing for differences among samples to be seen, providing researchers with a more accurate assessment of the toxicity of new compounds. This study has refined the important mBCI-GSH assay that has been used prolifically to determine an important characteristic of candidate pharmaceutical compounds.en_US
dc.description.sponsorshipCeeTox, Inc. Kalamazoo, Michigan.
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherKalamazoo Collegeen_US
dc.relation.ispartofKalamazoo College Biology Senior Individualized Projects Collection
dc.relation.ispartofseriesSenior Individualized Projects. Biology;
dc.rightsU.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.
dc.titleIn glutathione-monochlorobimane assay with human microsomes, increased glutathione concentration and pre-incubation with NADPH and ABT overcomes signal reductionen_US
dc.typeThesisen_US
KCollege.Access.ContactIf you are not a current Kalamazoo College student, faculty, or staff member, email dspace@kzoo.edu to request access to this thesis.


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  • Biology Senior Individualized Projects [1520]
    This collection includes Senior Individualized Projects (SIP's) completed in the Biology Department. Abstracts are generally available to the public, but PDF files are available only to current Kalamazoo College students, faculty, and staff.

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