Article ; Online: Melatonin regulates L-arginine transport and NADPH oxidase in young rats with bile duct ligation: role of protein kinase C.
2013 Volume 73, Issue 4 Pt 1, Page(s) 395–401
Abstract: ... We hypothesized that protein kinase C-α (PKC-α) is involved in the increases of L-arginine in melatonin-treated ... We recently found that L-arginine levels were significantly raised by melatonin in young rats with BDL ... Results: Melatonin prevented BDL-induced mortality and kidney injury. Melatonin additionally increased L ...
Abstract | Background: Bile duct ligation (BDL) is a commonly used cholestatic liver disease (CLD) model. We recently found that L-arginine levels were significantly raised by melatonin in young rats with BDL. We hypothesized that protein kinase C-α (PKC-α) is involved in the increases of L-arginine in melatonin-treated BDL rats. In addition, we tested whether melatonin prevents nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-induced reactive oxygen species (ROS) production, in rats with BDL, through PKC. Methods: Four groups of young male rats were studied: shams (n = 6), untreated BDL rats (n = 9), melatonin-treated shams (n = 6, M), and melatonin-treated BDL rats (n = 6, BDL + M). Melatonin-treated rats received daily melatonin 1 mg/kg/d via i.p. injection. All surviving rats were killed 14 d after surgery. Results: Melatonin prevented BDL-induced mortality and kidney injury. Melatonin additionally increased L-arginine concentrations in BDL liver, which is correlated with decreased PKC-α translocation. Next, melatonin increased L-arginine levels in BDL kidneys, which was correlated with decreased renal levels of arginase II. In the BDL kidney, melatonin decreased PKC-β translocation, reduced p47phox translocation, and diminished NADPH-dependent superoxide production. Conclusion: Melatonin inhibits PKC-α to increase cationic amino acid transporter-1 (CAT-1)-mediated L-arginine uptake in BDL liver, whereas it inhibits PKC-β to reduce NADPH-dependent superoxide production. |
---|---|
MeSH term(s) | Animals ; Arginase/metabolism ; Arginine/analogs & derivatives ; Arginine/blood ; Arginine/metabolism ; Biological Transport ; Cationic Amino Acid Transporter 1/metabolism ; Cholestasis, Extrahepatic/blood ; Cholestasis, Extrahepatic/drug therapy ; Cholestasis, Extrahepatic/enzymology ; Cholestasis, Extrahepatic/etiology ; Common Bile Duct/surgery ; Disease Models, Animal ; Female ; Injections, Intraperitoneal ; Kidney/drug effects ; Kidney/enzymology ; Ligation ; Liver/drug effects ; Liver/enzymology ; Male ; Melatonin/administration & dosage ; Melatonin/pharmacology ; NADPH Oxidases/metabolism ; Protein Kinase C/antagonists & inhibitors ; Protein Kinase C/metabolism ; Protein Kinase C beta ; Protein Kinase C-alpha/antagonists & inhibitors ; Protein Kinase C-alpha/metabolism ; Protein Kinase Inhibitors/administration & dosage ; Protein Kinase Inhibitors/pharmacology ; Protein Transport ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species/metabolism |
Chemical Substances | Cationic Amino Acid Transporter 1 ; Protein Kinase Inhibitors ; Reactive Oxygen Species ; N,N-dimethylarginine (63CV1GEK3Y) ; Arginine (94ZLA3W45F) ; NADPH Oxidases (EC 1.6.3.-) ; neutrophil cytosolic factor 1 (EC 1.6.3.1) ; Protein Kinase C (EC 2.7.11.13) ; Protein Kinase C beta (EC 2.7.11.13) ; Protein Kinase C-alpha (EC 2.7.11.13) ; Arg2 protein, rat (EC 3.5.3.1) ; Arginase (EC 3.5.3.1) ; Melatonin (JL5DK93RCL) |
Language | English |
Publishing date | 2013-04 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 4411-8 |
ISSN | 1530-0447 ; 0031-3998 |
ISSN (online) | 1530-0447 |
ISSN | 0031-3998 |
DOI | 10.1038/pr.2012.203 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
In stock of ZB MED Cologne/Königswinter
Zs.A 564: Show issues | Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG) |
|||
Zs.MO 373: Show issues |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.