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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2000-1-6
pubmed:abstractText
Serum and tumor cytosolic levels of glutathione-S-transferase (GST) and glutathione-reductase (GR) activity were determined spectrophotometrically. The levels were correlated with clinicopathological criteria and a tobacco-associated protein band (T band) found in serum. The results showed significantly decreased mean serum GST levels (p < 0.02) in cancer patients as compared with controls. However, mean serum GR levels were significantly higher in patients than in controls (p < 0.01). T-band-positive patients showed low GST and low GR activity as compared with T-band-negative patients. Tumor cytosolic-enzyme levels of GST and GR activity were significantly higher (p < 0.0003 and p < 0.0001, respectively) than in corresponding adjacent noncancerous mucosa. Tumour cytosolic GST and GR activity showed significant association with clinicopathologic criteria, e.g., stage, histologic grade and nodal involvement. T-band-negative patients showed significantly higher levels of GST (p < 0.0001) than did T-band-positive patients. Low levels of cytosolic GST may be associated with increased susceptibility towards carcinogen-induced damage. The results suggest that the presence of T band in the sera may be associated with a high-risk phenotype due to decreased detoxification ability.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0020-7136
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
83
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
727-31
pubmed:dateRevised
2007-7-24
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Assessment of glutathione-S-transferase and glutathione reductase in patients with squamous-cell carcinoma of buccal mucosa.
pubmed:affiliation
Department of Cancer Biology, Gujarat Cancer and Research Institute, Ahmedabad, India.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't