title: [Expired ethane as a non-invasive marker of the course of experimental multiple organ dysfunction syndrome (MODS)].
abstract: BACKGROUND AND WORK HYPOTHESIS: The mechanisms of organ damage in MODS are unclear. Given that lipid peroxidation induced by oxygen radicals may play a key role in organ damage, expired ethane, a marker of lipid peroxidation, could be correlated to the entity and evolution of experimental MODS.
  
  
  METHODS
  Forty wistar male rats (250 +/- 15 g body weight) were intraperitoneally injected with 10 ml of Zymosan mineral oil suspension (2.5%) to provoke MODS. Survival and symptoms were noted daily. On the 2nd, 7th and 14th day the animals underwent thorax CT scanning. CT images were processed to evaluate the relative density of lung parenchima. Expired ethane was measured using mass spectrometer and percentual changes were noted. Relative organ weight (liver and lung) were measured in 2nd, 7th and 14th day.
  
  
  METHODS
  Pearson's linear correlation.
  
  
  RESULTS
  The results show that maximal lung damage took place at the same moments as ethane concentrations peaked. A strict correlation (r = 0.93; p < 0.0001) was found between lung density and expired ethane. Strict correlation was found between organ weight, symptoms, survival and ethane production.
  
  
  CONCLUSIONS
  Lipid peroxidation, as expressed by ethane production, might be an important cause of organ damage in MODS.
authors.affiliation: Istituto di Anestesia e Rianimazione, Università degli Studi di Firenze.
authors.forename: A
authors.initials: A
authors.lastname: di Filippo
authors.forename: S
authors.initials: S
authors.lastname: Scardi
authors.forename: M
authors.initials: M
authors.lastname: Consalvo
authors.forename: N
authors.initials: N
authors.lastname: Ridolfi
authors.forename: G
authors.initials: G
authors.lastname: Pellegrini
authors.forename: E
authors.initials: E
authors.lastname: Paternostro
authors.forename: G P
authors.initials: GP
authors.lastname: Novelli
mesh_terms: D000818:Animals; D015415:Biomarkers; D001944:Breath Tests; D004980:Ethane / Q000378:metabolism*; D008297:Male; D009102:Multiple Organ Failure / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D015415:Biomarkers; D004980:Ethane
vernacular_title: L'etano espirato come marker non invasivo della evoluzione della multiple organ dysfunction syndrome (MODS) sperimentale.