Effect of Glucose on pH in Human Tumor Xenografts
Author Information
Author(s): T. Volk, E. Jaihdel, H.P. Fortmeyer, K.-H. Glisenkamp, M.F. Rajewsky
Primary Institution: Institute of Cell Biology (Cancer Research), West German Cancer Center Essen, University of Essen Medical School
Hypothesis
Does intravenous glucose administration affect the pH levels in human tumor xenografts?
Conclusion
Intravenous glucose administration significantly reduces the pH in human tumor xenografts, indicating a tumor-specific acidosis.
Supporting Evidence
- All xenografts responded to glucose infusion with a decrease in pH.
- The average pH dropped from 6.83 to 6.43 after glucose administration.
- Acidosis was tumor-specific, with normal tissues showing only minor pH changes.
- Different tumor types exhibited varying pH responses to glucose.
- Hyperglycemia induced a ten-fold increase in H+ ion activity in tumor tissues.
Takeaway
When we give glucose to rats with human tumors, the tumors become more acidic, which might help in treating cancer better.
Methodology
The study involved measuring pH levels in 30 human tumor xenograft lines in athymic rats before and after glucose infusion.
Limitations
The study primarily used xenografts in rats, which may not fully represent human tumors.
Participant Demographics
The study involved congenitally athymic rats bearing human tumor xenografts.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
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