Nanocrystals possess the merits of high solubility, fast dissolution rate and high bioavailability with extremely small particle size, so they have been used in various formulations for oral, injectable, transdermal or mucosal delivery. Although injectable drug delivery is relatively reliable, the transport process of nanocrystals after injection is more complicated than that of solution. Based on literature research, this paper reviews the mechanisms of absorption, distribution, metabolism and excretion of injectable nanocrystals. Meanwhile, it also describes the factors affecting their processes in vivo, including the influence of physiological factors such as injection site, mononuclear phagocyte system, and formulation factors such as drug particle size and stabilizer. All of these provide a good foundation for further extensive application.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |