Abstract

Many experimental and clinical solid tumors are known to exhibit poor oxygenation and high interstitial fluid pressure (IFP) in comparison to normal surrounding tissues. Oxygenation and IFP in addition to abnormal blood flow influence the response of tumors to various therapies and are also important for development and progression of malignant growth.“ Hydralazine (HYZ) is an arteriolar vasodilating drug which is used for treatment of hypertension in humans. HYZ can decrease both tumor blood flow and tumor IFP. These two changes may have opposite effects on drug delivery and oxygenation in tumors. In our study we evaluated the effect of HYZ on blood flow, oxygenation, and IFP in a murine tumor model. Oxygenation was measured by a relatively new method which has recently become available, the OxyLite system.

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