Collagen-based microgels and nanogels are extremely small in size and consist of cross-linked polymer networks made of the protein collagen or its derivatives. They can function as a ‘delivery system’ that releases substances such as drugs at specifically targeted sites in the body. Now, researchers have published an in-depth review on the manufacturing processes, drug release mechanisms, and biomedical applications of these hydrogel systems, including wound repair and cancer treatment.

Researchers have found widespread exposure to primary aromatic amines (PAAs), toxic chemicals used in industry and consumer products, among the Chinese population. The study indicates that these chemicals may damage DNA, especially in non-adults and smokers, raising long-term health concerns.