Volume 115
Published on June 2025Volume title: Proceedings of the 3rd International Conference on Modern Medicine and Global Health

Alzheimer's disease (AD) patients experience declining memory, anxiety, and depression along with a decrease in adult hippocampal neurogenesis (AHN). It's still unclear if improving AHN in the damaged AD brain will improve affective and cognitive performance. According to earlier studies, in two different AD mice models, 5×FAD and 3×Tg-AD, patterned optogenetic activation of the hypothalamic supramammillary nucleus (SuM) increases AHN. Interestingly, these AD mice's memory and emotional deficiencies are restored when SuM-enhanced adult-born neurons (ABNs) are chemogenetic activated. In contrast, behavioral impairments cannot be restored by SuM stimulation alone or by activating ABNs without modifying SuM. This paper will design 3 experiments to explore the mechanism of activating SuM modified ABN to improve memory and emotional function in AD, including who enhances cognitive and emotional function, the activition of microglia and the long-term effect of SuM modified ABNs on memory and emotion function of AD mice.