title: The effect of glutathione and N-acetylcysteine on lipoperoxidative damage in patients with early septic shock.
abstract: Both the hyperproduction of oxygen free radicals (OFR) and the weakening of natural scavenging mechanisms have been implicated as contributors to multiple organ failure in septic shock. This study examined whether the antioxidants glutathione (GSH) and N-acetyl-L-cysteine (NAC) play a protective role against damage by OFR in early septic shock. We randomly entered 30 patients with septic shock into one of three groups within 24 h of diagnosis. All of the patients received septic shock therapy, including parenteral nutrition, antibiotics, and volume-expanding and inotropic agents. One group (Group B) also received 70 mg/kg/d of intravenous GSH, and a second group (Group C), 70 mg/kg/d of intravenous GSH and 75 mg/kg/d of intravenous NAC. The protection against OFR damage was evaluated by measuring expired ethane, plasma malondialdehyde, erythrocyte deformability, complement activation, and clinical scores at admission and on Days 3 and 5 of treatment. A significant decrease in peroxidative indexes was observed at Day 5 in Group B as compared with both the control group and basal values. The decrease in peroxidative indexes was even more marked in Group C. Clinical scores in this group were also significantly improved. In conclusion, the administration of high doses of NAC added to GSH significantly decreased the peroxidative stress of patients with septic shock.
authors.affiliation: Department of Anesthesiology and Intensive Care, University of Florence, Italy.
authors.forename: O
authors.initials: O
authors.lastname: Ortolani
authors.forename: A
authors.initials: A
authors.lastname: Conti
authors.forename: A R
authors.initials: AR
authors.lastname: De Gaudio
authors.forename: E
authors.initials: E
authors.lastname: Moraldi
authors.forename: Q
authors.initials: Q
authors.lastname: Cantini
authors.forename: G
authors.initials: G
authors.lastname: Novelli
mesh_terms: D018806:APACHE; D000111:Acetylcysteine / Q000008:administration & dosage* / Q000009:adverse effects; D000328:Adult; D000368:Aged; D000975:Antioxidants / Q000008:administration & dosage* / Q000009:adverse effects; D003422:Critical Care; D005260:Female; D005978:Glutathione / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D007262:Infusions, Intravenous; D015227:Lipid Peroxidation / Q000187:drug effects* / Q000502:physiology; D008297:Male; D008875:Middle Aged; D012772:Shock, Septic / Q000188:drug therapy* / Q000401:mortality / Q000503:physiopathology; D015996:Survival Rate; D016896:Treatment Outcome
chemical_list: D000975:Antioxidants; D005978:Glutathione; D000111:Acetylcysteine