Brain aging: Evaluation of pH using phosphorus magnetic resonance spectroscopy

Area of Science:

• Neuroscience
• Gerontology
• Biochemistry

Background:

• Age-related brain changes are significant.
• Understanding brain pH is crucial for aging research.

Purpose of the Study:

• To determine the standard brain pH in healthy adults across different age groups.
• To investigate age-related differences in brain pH using phosphorus magnetic resonance spectroscopy.

Main Methods:

• Phosphorus magnetic resonance spectroscopy (31P-MRS) was performed on 96 healthy individuals (ages 20-81).
• The study included two age groups: young adults (20-32 years) and older adults (60-81 years).
• Brain pH was measured from the entire brain volume using a 1.5-T MRI system.

Main Results:

• Brain pH was generally slightly alkaline in all participants, averaging 7.09 ± 0.11 in younger adults and 7.03 ± 0.05 in older adults.
• A slight negative correlation between brain pH and age was observed.
• No significant sex-based differences in brain pH were noted.

Conclusions:

• The findings provide a baseline for brain pH in healthy aging.
• These results may inform future research on age-related brain health and neurological conditions.