Single-Walled Carbon Nanohorn (SWNH) Aggregates Inhibited Proliferation of Human Liver Cell Lines and Promoted Apoptosis, Especially for Hepatoma Cell Lines

Research focus: SWNHs (single-walled carbon nanohorns) may be utilized to treat cancer as drug carriers based on their particular structure. But, the effect mechanism of the material itself on liver cells has not been investigated. Research methods used: To answer those questions, the roles of rude SWNHs on the biology functions of human liver normal and cancer cells were studied. Results/findings of the research: The results indicated that SWNHs suppressed growth, proliferation, and mitotic entry of human liver normal and cancer cells, and also pushed cell apoptosis, especially in cancer cells. We had found SWNHs in the lysosomes of L02 cells and in the nuclei of HepG2 cells. It indicated that individual spherical SWNH particles could enter into liver cells. Main conclusions and recommendations: Our results identified that it had different mechanisms between SWNHs and hepatoma cell lines or human normal cell lines. Advanced research about application and mechanisms in the treatment of HCC (hepatocellular carcinoma) by SWNHs should be carried out

Correlation between Aphids, Aphidiinae and Hyperparasitoids in Different Habitats

Aphids are one of the major pests of economical crops in China. Field surveys showed that Macrosiphum avence, Rhopalosiphum padi, Schizaphis graminum, Myzus persicae, Aphis glycines and Lipaphis erysimi are the main aphid species found in agricultural fields. Besides lady beetles and spiders, aphidiine braconids also play an important role in controlling aphids, including Ephedrus plagiator, E. nacheri, Aphidius euenae, Diaeretiella rapae, A. ervi, and A. picipes. However, Aphidiinae are also attacked by many hyperparasitoids, which include Aphidencyrtus aphidivorus, Pachyneuron aphidis, Asaphes vulgaris, Lygocerus koebelai and Figites sp.Originating text in Chinese.Citation: Zhang, Guoan, Guan, Yue, Wang, Qinghai. (2000). Correlation between Aphids, Aphidiinae and Hyperparasitoids in Different Habitats. 8th National Biological Control Conference, Symposium on Insect Control by Microbiology, 29-29