Document Detail

Intratracheal co-administration of antioxidants and ceftriaxone reduces pulmonary injury and mortality rate in an experimental model of sepsis.
MedLine Citation:
PMID:  25124169     Owner:  NLM     Status:  Publisher    
BACKGROUND AND OBJECTIVE: Recent studies showed that both sepsis and antibiotic therapy are associated with cell death and linked to reactive oxygen species generation. This study investigated the effects of intratracheal administration of combinations of antioxidants (n-acetyl cysteine (NAC), vitamins C and E) in the treatment of sepsis-induced lung injury.
METHODS: Ninety-six male Wistar rats subjected to sepsis were treated with ceftriaxone plus NAC with or without vitamins C and E and compared to appropriate controls. As an index of oxidative damage protein carbonyls, sulfhydryl groups, lipid peroxidation and superoxide anion were measured, as well as superoxide dismutase and catalase. Histopathological alterations and mortality rate were also analyzed.
RESULTS: Twenty-four hours after sepsis induction, markers of oxidative stress increased in all lungs examined. Ceftriaxone plus intratracheal combination of NAC, vitamins C and E decreased lung injury in infected animals by reducing superoxide anion production (54%), lipid peroxidation (53%) and protein carbonyl (58%) and restored the redox status (7.5 times). This therapy also reduced the imbalance of antioxidant enzymes activities and attenuated the alveolar architectural disorganization, inflammatory cell infiltration and pulmonary oedema. Survival increased from 66.6% with ceftriaxone to 83.2% with ceftriaxone plus antioxidants.
CONCLUSIONS: Ceftriaxone plus intratracheal co-administration of antioxidants provides better protection, by decreasing pulmonary oxidative stress, limiting histophatological alterations and improving survival. Antioxidants should be explored as a co-adjuvant in the treatment of severe lung injury.
Andre M Galvão; Marcela S O Wanderley; Roberto A Silva; Carlos A M Filho; Mário R Melo-Junior; Luciano A Silva; Emílio L Streck; Armele F Dornelas de Andrade; Maria B Souza Maia; Celia M M Barbosa de Castro
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-14
Journal Detail:
Title:  Respirology (Carlton, Vic.)     Volume:  -     ISSN:  1440-1843     ISO Abbreviation:  Respirology     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9616368     Medline TA:  Respirology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 Asian Pacific Society of Respirology.
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