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Blood flow and oxygenation status of human tumors. Clinical investigations
H J Feldmann1, M Molls, P Vaupel
1Klinik und Poliklinik für Strahlentherapie und Radiologische Onkologie, Klinikum rechts der Isar der Technischen Universität München. Klinik-fuer-Strahlentherapie@lrztu-muenchen.de
Purpose:
There is a large body of evidence suggesting that blood flow and oxygenation of human tumors are important research topics which may explain, in particular, resistance to radiation and to many antineoplastic drugs, which can limit the curability of solid tumors by radiotherapy and chemotherapy.
Materials And Methods:
This manuscript reviews the clinical investigations which have been performed regarding blood flow and oxygenation status of human tumors in radiation oncology.
Results:
The possible uses and limitations of the prognostic significance and the changes under therapy measuring blood flow and oxygenation in human tumors were discussed. In addition, several approaches were summarized, which can improve the microvascular O2 availability and perfusion-limited O2 delivery.
Conclusion:
The clinical data concerning the prognostic significance of blood flow, vascular function and oxygenation of human tumors are relevant for patient selection in clinical oncology. Strategies to improve traditional cancer therapy by modulation of the oxygenation status remain quite promising but more critical research and sophisticated clinical studies are necessary before its true potential is known.
Insights
Tumor blood flow and oxygenation impact cancer treatment resistance. Understanding these factors and improving oxygen delivery can enhance radiotherapy and chemotherapy effectiveness, though further research is needed.
Area of Science:
- Oncology
- Radiation Oncology
- Cancer Biology
Background:
- Tumor blood flow and oxygenation are critical factors in cancer research.
- These parameters significantly influence resistance to radiotherapy and chemotherapy.
- Limited curability of solid tumors is often linked to these microenvironmental conditions.
Purpose of the Study:
- To review clinical investigations on human tumor blood flow and oxygenation in radiation oncology.
- To discuss the prognostic significance and therapeutic changes in tumor blood flow and oxygenation.
- To summarize strategies for improving tumor oxygen availability and delivery.
Main Methods:
- Review of clinical investigations.
- Analysis of prognostic significance of blood flow and oxygenation.
- Summary of therapeutic interventions.
Main Results:
- Blood flow and oxygenation measurements have prognostic value in human tumors.
- Therapeutic strategies can modulate microvascular oxygen availability and perfusion.
- Understanding these factors is key to overcoming treatment resistance.
Conclusions:
- Clinical data on tumor blood flow, vascular function, and oxygenation are vital for patient selection.
- Strategies to improve cancer therapy by modulating oxygenation are promising.
- Further critical research and sophisticated clinical studies are necessary to realize the full potential.