RESUMEN

Ulcerative colitis is a chronic disease that increases the risk of developing colorectal cancer. Conventional medications are limited by drug delivery and a weak capacity to modulate the inflammatory microenvironment. Further, gut microbiota dysbiosis caused by mucosal damage and dysregulated redox homeostasis leads to frequent recurrence. Therefore, promoting mucosal healing and restoring redox homeostasis is considered the initial step in treating ulcerative colitis. Plasma-activated solutions (PAS) are liquids rich in various reactive nitrogen species (RNS) and reactive oxygen species (ROS) and are used to treat multiple diseases. However, its effect on ulcerative colitis remains to be examined. Therefore, using a DSS-induced mice colitis model, it is found that PAS has the potential to treat colitis and prevent its recurrence by promoting intestinal mucosal repair, reducing inflammation, improving redox homeostasis, and reversing gut microbiota dysbiosis. Further, an equipment is designed for preparing PAS without using nitrogen; however, after treatment with the Nitro-free PAS, the therapeutic effect of PAS is significantly weakened or even lost, indicating that RNS may be the main mediator by which PAS exerts its therapeutic effects. Overall, this study demonstrates the treatment of ulcerative colitis as a novel application of PAS.

Asunto(s)

Colitis Ulcerosa , Colitis , Microbiota , Animales , Ratones , Colitis Ulcerosa/inducido químicamente , Disbiosis/inducido químicamente , Colitis/inducido químicamente , Modelos Animales de Enfermedad , Homeostasis , Oxidación-Reducción

RESUMEN

A discovery that cells die of a novel and distinctive process, along with some characteristic events, such as cellular shrinkage and Programmed cell death 4 disappearance, has been done by using non-thermal atmospheric pressure plasma-activated solutions [1]. Data on the responsiveness of multiple cell types to the induction of cellular shrinkage and cell death and the loss of Programmed cell death 4 by exposure to the non-thermal atmospheric pressure plasma-activated solutions were collected. Human neuroblastoma SH-SY5Y cells, murine myoblast C2C12 cells, and murine embryonic fibroblasts were cultured for various periods in each of the non-thermal atmospheric pressure plasma-activated solutions and then examined by light field microscopic observation for their effects on cell morphology, by Trypan blue dye exclusion assay for those on cell death, and by Western blotting for those on Programmed cell death 4 disappearance. The data clarified some differences in the responsiveness to the induction of cellular shrinkage, cell death, and Pdcd4 disappearance by all the non-thermal atmospheric pressure plasma-activated solutions among the cells.