D-Galactose-Induced Cognitive Impairment: Mechanism, Models And Therapeutic Interventions

D-galactose administration in animal models induces brain aging and cognitive decline by causing mitochondrial dysfunction, oxidative stress, inflammation, and programmed cell death, and various therapeutic interventions have been explored to counteract these effects.

Scientists use a special sugar called D-galactose to create models of brain aging and memory problems in animals. This helps them understand how our brains age and how conditions like dementia develop. When D-galactose is given over time, it causes several issues in the brain. It leads to problems with mitochondria, which are like the powerhouses of our cells, reducing their ability to produce energy and increasing harmful byproducts called free radicals. This imbalance, known as oxidative stress, damages brain cells. It also triggers inflammation and a process called apoptosis, which is programmed cell death. All these factors together contribute to a decline in cognitive functions, such as learning and memory. By studying these mechanisms, researchers can test different treatments that aim to protect brain cells, improve mitochondrial function, reduce oxidative stress, and lessen inflammation, ultimately seeking ways to prevent or reverse age-related cognitive decline.

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