Guangqing Xia

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Lycium barbarum (L. barbarum) fruit or extract has been regarded as a superior-grade Chinese medicine, used to modulate body immunity and for anti-aging purposes. However, the underlying molecular mechanisms behind these effects remain unclear. In the present study, L. barbarum polysaccharides (LBPs), considered a major contributor of L. barbarum effects,(More)
The unique physical and chemical characteristics of nanomaterials, such as the effects of their small size, surface effects, very high rates of reaction, and quantum tunnel effect, have aroused great interest among scholars. However, improper usage has led to an increasing number of nanomaterials entering the environment through various channels, greatly(More)
Polysaccharides were extracted from astragalus, ganoderm lucidum and lyceum, which are commonly used to increase organism's immunity. Several earlier studies in vitro have indicated that astragalus polysaccharide (AP), ganoderm a lucidum polysaccharide (GLP) and lycium polyasacchride (LBP) has anti-aging activities, however the mechanism underlying these(More)
Dioscorea nipponica Makino, a perennial herb growing in mountainous areas of the Chinese Changbai mountains and Korean peninsula, has long been used as a folk medicine for bronchitis, asthma, and rheumatoid arthritis. Due to these therapeutic properties, wild Dioscorea nipponica Makino resources become less and less, some wild species have been tamed to be(More)
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