Front Cover: Chronic wound generates high levels of reactive oxygen species (ROS), which inhibits normal healing process. In article number 2200234, Justin J. Chung and co-workers fabricate ROS suppressive antioxidant hydrogel by chemically cross-linking kraft lignin with gelatin. The flexible lignin-gelatin is able to suppress ROS, exhibit antibacterial activity.

reactive oxygen species (ros) are produced in many normal and abnormal processes in humans, including atheroma, asthma, joint diseases, cancer, and aging. basal levels of ros production  in  cells  could  be  related  to  several  physiological functions  including  cell proliferation, apoptosis and homeostasis. however, excessive ros production above basal levels would impair and oxidize dna, ...

Visible light at high intensity was found to kill bacteria while low-power light in the visible and near infrared region enhances bacterial proliferation. The present review summarizes evidence demonstrating that the mechanism of visible light- bacteria interaction involves reactive oxygen species (ROS) generation. The ROS are photo induced by bacterial endogenous photosensitizers. Phototoxic e...

In vitro maturation (IVM) is emerging as a popular technology at the forefront of fertility treatment and preservation. However, standard in vitro culture conditions usually increase reactive oxygen species (ROS), which have been implicated as one of the major causes for reduced embryonic developmental competence. It is well-known that higher than physiological levels of ROS triggers granulosa ...

Introduction Reactive oxygen species (ROS) and reactive nitrogen species (RNS) generated during normal physiological processes are highly reactive with cellular lipids, DNA, and proteins. Superoxide and nitric oxide are the primary ROS and RNS, respectively, produced in cells, and both species react with other molecules and each other to form a diverse array of additional ROS and RNS (e.g., hyd...

Introduction Reactive oxygen species (ROS) and reactive nitrogen species (RNS) generated during normal physiological processes are highly reactive with cellular lipids, DNA, and proteins. Superoxide and nitric oxide are the primary ROS and RNS, respectively, produced in cells, and both species react with other molecules and each other to form a diverse array of additional ROS and RNS (e.g., hyd...

Oxygen metabolism is thought to impact on aging through the formation of reactive oxygen species (ROS) that are supposed to damage biological molecules. The study of p66(Shc), a crucial regulator of ROS level involved in aging dysfunction, suggests that the incidence of degenerative disease and longevity are determined by a specific signaling function of ROS other than their unspecific damaging...