Carrier free nanomedicine for enhanced photodynamic tumor therapy through glutathione S transferase inhibition Chemical Communications (RSC Publishing) Oxidative stress is consistently elevated in GDM cases, with low glutathione levels as well as enzymes that use glutathione being lower as well. Glutathione is used by either glutathione transferases or Oxidative stress Wikipedia An evolving understanding of the S glutathionylation cycle in pathways of redox regulation ScienceDirect Glutathione S transferase: A keystone in Parkinson's disease pathogenesis and therapy ScienceDirect