alexa Inducer of heme oxygenase-1 cobalt protoporphyrin accelerates autophagy and suppresses oxidative damages during lipopolysaccharide treatment in rat liver.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular Biomarkers & Diagnosis

Author(s): Unuma K, Aki T, Matsuda S, Funakoshi T, Yoshida K,

Abstract Share this page

Abstract AIM: Mitochondrial damage and subsequent oxidative stresses play important roles in the pathogenesis of sepsis-induced organ failure. Recently, autophagy, the major degradation pathway involved in mitochondrial quality control, was reported as a cellular adaptive response to oxidative stresses. The aim of the present study was to elucidate the molecular mechanism that underlies hepatic damage during lipopolysaccharide (LPS) treatment. We also try to determine if the damage can be attenuated by administration of cobalt protoporphyrin (CoPP), a potent heme oxygenase-1 (HO-1) inducer. METHODS: Five-week-old male Sprague-Dawley rats were injected i.p. with 15 mg/kg LPS. To determine if hepatic damage following LPS administration can be attenuated by HO-1, CoPP was injected s.c. for 4 days consecutively at 24-h intervals. After treatment with LPS, the liver was obtained and analyzed. RESULTS: A large reduction in liver mitochondrial protein and induction of autophagy were observed in LPS-treated rats. Electron microscopic and immunohistochemical analyses demonstrated autophagic vacuoles in LPS-treated rat liver. Oxidative stress markers (4-hydroxy-2-nonenal and 8-hydroxy-2'-deoxyguanosine) were increased in LPS-treated animals; CoPP treatment ablated these alterations. An inhibitor for the opening of mitochondrial permeability transition pore, cyclosporine A, suppressed oxidative stress as well as liver damage during LPS administration. CoPP promoted autophagy and prevented rats from liver damage during LPS administration. CONCLUSION: HO-1 promotes autophagy and elimination of damaged mitochondria thereby repressing oxidative stress in LPS-treated rat liver, revealing a novel mechanism for protection by HO-1 against septic liver damage. © 2012 The Japan Society of Hepatology. This article was published in Hepatol Res and referenced in Journal of Molecular Biomarkers & Diagnosis

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords