Exploring the Effects of Empagliflozin Administration and Physical Training on Cognitive Functions in an Amyloid...

Alzheimer's disease (AD) is a widely prevalent and neurodegenerative disorder that leads to dementia and mortality worldwide. Previous investigations have reported the beneficial effects of physical exercise on brain function, linked to anti-inflammatory effects in the brain vasculature and elevated BDNF production. Empagliflozin, a conventional antidiabetic agent, has shown potential neuroprotective properties in the central nervous system, evidenced by its ability to elevate BDNF and mitigate oxidative stress and inflammation.

In the present investigation, AD was induced in control, exercise, empagliflozin (10 mg/kg BW, PO), and combined intervention groups using intrahippocampal injections of an amyloid-beta (Aβ) prepared solution via stereotaxic surgery. The therapeutic effects of each treatment, exercise alone, empagliflozin alone, and exercise plus empagliflozin, were studied. After 28 days, spatial memory tests were used to assess memory and learning. Furthermore, histopathological (H&E and Congo red) and immunohistochemical (GFAP) analyses were performed, and the ADP/ATP ratio in isolated brain mitochondria was measured by HPLC.

Our results showed that the combined program of physical training and empagliflozin treatment in the Aβ-induced AD model drastically improved cognitive functions and neurological parameters, including target-finding time, traveled distance, time spent in the target quadrant, and ADP/ATP ratios in brain mitochondria. Additionally, it diminished necrotic cell death and reduced Aβ plaques but did not notably affect astrocyte activity.

Exercise and empagliflozin, by affecting mitochondrial energy balance and reducing amyloid deposition, play key roles in mitigating AD pathophysiology.

The combined effects of the treatments used in this experimental method yielded significant improvements in cognitive functions. These findings provide a basis for further clinical studies for the exploration of the synergistic impact of the aforementioned therapeutic methods.