[THE AGING OF MICROVASCULAR NETWORK FORMED IN CORTEX FOLLOWING INTRACEREBRAL TRANSPLANTATION OF MESENCHYMAL STEM...

Area of Science:

• Neuroscience
• Regenerative Medicine
• Vascular Biology

Context:

• Aging is associated with cognitive decline and impaired brain function, partly due to microcirculatory dysfunction.
• Mesenchymal stem cells (MSCs) are being investigated for their regenerative potential in various tissues, including the brain.
• Assessing the impact of MSC transplantation on brain microcirculation in aging models is crucial for understanding their therapeutic efficacy.

Purpose:

• To investigate the effects of intracerebral mesenchymal stem cell transplantation on brain microcirculation in aged rats.
• To evaluate the long-term preservation of microvascular density and arteriole reactivity following MSC treatment in aging models.

Summary:

• Intracerebral transplantation of mesenchymal stem cells into 12-month-old rats significantly increased microvascular density in the pia mater by approximately 1.5-fold.
• The treatment also enhanced the constrictive response of pia arterioles to noradrenaline application on the brain surface.
• Crucially, both the increased microvascular density and enhanced arteriole reactivity were fully preserved in rats aged 22-24 months, indicating sustained therapeutic benefits.

Impact:

• This study demonstrates the potential of mesenchymal stem cells to restore and maintain brain microcirculation in aging.
• The findings suggest that MSC therapy could be a viable strategy to combat age-related cerebrovascular decline and preserve cognitive function.
• The long-term stability of these beneficial effects highlights the promise of MSCs for treating age-associated neurological disorders.