| pubmed-article:8102244 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0007600 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0035820 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0439849 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0014442 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0149925 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0334227 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0017817 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0013203 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0032214 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C0445223 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C1552599 | lld:lifeskim |
| pubmed-article:8102244 | lifeskim:mentions | umls-concept:C1704787 | lld:lifeskim |
| pubmed-article:8102244 | pubmed:issue | 2 | lld:pubmed |
| pubmed-article:8102244 | pubmed:dateCreated | 1993-9-13 | lld:pubmed |
| pubmed-article:8102244 | pubmed:abstractText | Small cell lung cancer (SCLC) is treated primarily with combination chemotherapy. Despite high initial response rates, most patients eventually die with drug resistant disease. In some tumours, resistance to multiple chemotherapeutic agents is attributed to overexpression of P-glycoprotein (P-gp). However, this does not appear to be a frequent occurrence in drug resistant SCLC. Increased levels of glutathione (GSH) and related enzymes may play a role in resistance to alkylating agents as well as natural product drugs. We measured levels of GSH, glutathione S-transferase (GST), glutathione reductase (GSH Red), glutathione peroxidase (GSH Px), and gamma-glutamyl transpeptidase (gamma-GT) in a panel of 20 SCLC cell lines. Most of these lines were established from patients treated at this centre. Each cell line had a characteristic and reproducible profile of GSH and related enzyme levels. Immunoblot analysis indicated that the predominant GST in the cell lines was the anionic pi isoenzyme. The relative sensitivity of each of these cell lines to 16 different chemotherapeutic agents was measured using a modified MTT assay. Spearman rank correlation analysis was used to determine the relationships between the relative chemosensitivity of these cell lines and the levels of GSH and related enzymes. The number of positive correlations was no greater than expected by chance alone. Furthermore, there was no correlation with the treatment history of the patients from whom the cell lines were derived. These data suggest that alterations in glutathione metabolism do not play a major role in resistance to chemotherapeutic agents in these human SCLC cell lines. | lld:pubmed |
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| pubmed-article:8102244 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8102244 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8102244 | pubmed:citationSubset | IM | lld:pubmed |
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