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[Change in cellular pH in hyperthermia and hypoxia]
Meditsinskaia Radiologiia
|May 1, 1986
Summary
Cellular acidity increases with hyperthermia and hypoxia, impacting cell survival. Understanding intracellular pH changes is crucial for cells exposed to heat and oxygen deprivation.
Area of Science:
- Cell Biology
- Biophysics
Context:
- Investigating the impact of environmental stressors on cellular physiology.
- Utilizing microfluorimetry with fluorescein diacetate for real-time pH monitoring.
Purpose:
- To determine the effect of hyperthermia and hypoxia on intracellular pH (pHc) in cultivated cells.
- To assess the relationship between intracellular acidity and cell survival under stress conditions.
Summary:
- Normal intracellular pH (pHc) is 7.0 at temperatures between 22-37°C.
- Hyperthermia and hypoxia induce cellular acidity, an effect amplified by exposure duration.
- Combined hyperthermia and hypoxia, or exogenous acidic conditions, exacerbate intracellular acidification.
Impact:
- Intracellular pH is a critical factor for cell survival, especially under hyperthermia and irradiation.
- Findings highlight the importance of managing cellular pH in therapeutic contexts involving hyperthermia.