In vivo 31P nuclear magnetic resonance spectroscopy was used to examine the bioenergetics of the rat 9L gliosarcoma during untreated growth and in response to chemotherapy with l,3-bis(2-chloroethyl)-l-nitrosourea. Tumor growth was associated with a decline in the phosphocreatine and nucleoside triphosphate resonances, consistent with an increase in tumor hypoxia during untreated growth. Following chemotherapy with 13-his(2-chloroethyl)-l -nitrosourea (10 mg/kg), tumor levels of phosphocreatine and nucleoside triphosphate rebounded while the level of inorganic phosphate in the tumor declined. Histological comparison of treated and untreated tumor sections 4 days posttreatment showed that the treated tumor had a lower proportion of necrotic cells, a higher proportion of viable cells, and a 5-fold higher level of interstitial space than the control tumor.
|Original language||English (US)|
|Number of pages||6|
|State||Published - Jan 1 1988|
ASJC Scopus subject areas
- Cancer Research