tetano
Editor, Senior Moderator
Influenza Other Respi Viruses. 2013 Jan 22. doi: 10.1111/irv.12067. [Epub ahead of print]
Oxygen free radical involvement in acute lung injury induced by H5N1 virus in mice.
He G, Dong C, Luan Z, McAllan BM, Xu T, Zhao L, Qiao J.
Source
Department of Pathophysiology, College of Veterinary Medicine, China Agricultural University, Beijing, China; Institute of Molecular Ecology and Evolution, Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, China.
Abstract
BACKGROUND:
Acute lung injury is an important cause of death in humans infected with H5N1. It has been found that oxygen free radicals (OFRs) are elevated in lung tissue during influenza virus infections. In this study, we used a mouse model to explore the role of OFRs in acute lung injury caused by H5N1 viral infection.
METHODS:
Four- to six-week-old male specific pathogen-free BALB/c mice were inoculated intranasally with 10(5) 50% tissue culture infective doses (TCID(50) ) of highly pathogenic A/Chicken/Hebei/108/2002 (H5N1) viruses and were then given 1000 IU of lauric acid modified superoxide dismutase (LA-SOD) by intraperitoneal injection, starting 2 days post-infection and continuing for 6 days.
RESULTS:
The extent of lung injury and the concentration of OFRs were higher, and the SOD activity was lower in H5N1 virus-infected mice than that in uninfected control mice on days 3, 6, and 7 post-inoculation. Weak amelioration of clinical signs, a minor decrease in the total mortality and the extent of lung injury, and the lower OFRs concentration were seen in the LA-SOD treatment group, but a reduction in lung virus titers was not observed in the LA-SOD treatment at all time points.
CONCLUSIONS:
The LA-SOD treatment has a mild inhibitory effect on H5N1 influenza virus infection in mice. OFRs, therefore, might play an important role in the pathogenesis of acute lung injury induced by H5N1 virus.
? 2013 Blackwell Publishing Ltd.
PMID:
23336583
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23336583
Oxygen free radical involvement in acute lung injury induced by H5N1 virus in mice.
He G, Dong C, Luan Z, McAllan BM, Xu T, Zhao L, Qiao J.
Source
Department of Pathophysiology, College of Veterinary Medicine, China Agricultural University, Beijing, China; Institute of Molecular Ecology and Evolution, Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, China.
Abstract
BACKGROUND:
Acute lung injury is an important cause of death in humans infected with H5N1. It has been found that oxygen free radicals (OFRs) are elevated in lung tissue during influenza virus infections. In this study, we used a mouse model to explore the role of OFRs in acute lung injury caused by H5N1 viral infection.
METHODS:
Four- to six-week-old male specific pathogen-free BALB/c mice were inoculated intranasally with 10(5) 50% tissue culture infective doses (TCID(50) ) of highly pathogenic A/Chicken/Hebei/108/2002 (H5N1) viruses and were then given 1000 IU of lauric acid modified superoxide dismutase (LA-SOD) by intraperitoneal injection, starting 2 days post-infection and continuing for 6 days.
RESULTS:
The extent of lung injury and the concentration of OFRs were higher, and the SOD activity was lower in H5N1 virus-infected mice than that in uninfected control mice on days 3, 6, and 7 post-inoculation. Weak amelioration of clinical signs, a minor decrease in the total mortality and the extent of lung injury, and the lower OFRs concentration were seen in the LA-SOD treatment group, but a reduction in lung virus titers was not observed in the LA-SOD treatment at all time points.
CONCLUSIONS:
The LA-SOD treatment has a mild inhibitory effect on H5N1 influenza virus infection in mice. OFRs, therefore, might play an important role in the pathogenesis of acute lung injury induced by H5N1 virus.
? 2013 Blackwell Publishing Ltd.
PMID:
23336583
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23336583