Protective Role of Salidroside Against Aging in a Mouse Model Induced by D-galactose

Objective: To investigate the protective effects of putative AGEs (advanced glycation endproducts) inhibitor salidroside against aging in an accelerated mouse aging model induced by D-galactose.

Methods: A group of 5-month-old C57BL/6J mice were treated daily with D-galactose, D-galactose combined with salidroside, salidroside alone, and control buffer for 8 weeks. At the end of the treatment, serum AGEs levels, neurological activities, expression of glial fibrillary acidic protein (GFAP) and neurotrophin-3 (NT-3) in the cerebral cortex, as well as lymphocyte proliferation and IL-2 production were determined.

Results: D-galactose induced mouse aging model was developed as described before. As expected, salidroside blocked D-galactose induced increase of serum AGEs levels. It also reversed D-galactose induced aging effects in neural and immune system, as evidenced by improving motor activity, increasing memory latency time, and enhancing lymphocyte mitogenesis and interleukin-2 (IL-2) production. Furthermore, elevated expression of GFAP and NT-3 in the aged model mice was also reduced upon salidroside treatment.

Conclusion: Salidroside inhibits AGEs formation in vivo, which at least partially contributes to its anti-aging effect in D-galactose induced aging model.