Berk M, Malhi GS, Gray LJ, Dean OM The promise of N-acetylcysteine in neuropsychiatry. Trends Pharmacol Sci. 2013 Mar;34(3):167-77. doi: 10.1016/j.tips.2013.01.001. Epub 2013 Jan 29. Review.
Cabungcal JH, Steullet P, Kraftsik R, Cuenod M, Do KQ Early-life insults impair parvalbumin interneurons via oxidative stress: reversal by N-acetylcysteine. Biol Psychiatry. 2013 Mar 15;73(6):574-82. doi: 10.1016/j.biopsych.2012.09.020. Epub 2012 Nov 7.
Carmeli C, Knyazeva MG, Cuénod M, Do KQ Glutathione precursor N-acetyl-cysteine modulates EEG synchronization in schizophrenia patients: a double-blind, randomized, placebo-controlled trial. PLoS One. 2012;7(2):e29341. doi: 10.1371/journal.pone.0029341. Epub 2012 Feb 22.
Dean O, Giorlando F, Berk M N-acetylcysteine in psychiatry: current therapeutic evidence and potential mechanisms of action. J Psychiatry Neurosci. 2011 Mar;36(2):78-86. doi: 10.1503/jpn.100057. Review.
Shungu DC N-acetylcysteine for the treatment of glutathione deficiency and oxidative stress in schizophrenia. Biol Psychiatry. 2012 Jun 1;71(11):937-8. doi: 10.1016/j.biopsych.2012.03.025.
Dietary Supplement N-acetylcysteine (NAC) as a Novel Complementary Medicine to Improve Cognitive Disfunction in Schizophrenia
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
