Hepatocyte growth factor enhances protein synthesis in cardiomyocytes exposed to gamma-ray irradiation / 南方医科大学学报
Journal of Southern Medical University
;
(12): 602-604, 2007.
Article
in Chinese
| WPRIM
| ID: wpr-268070
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the protective effect of hepatocyte growth factor (HGF) on protein synthesis in rat cardiomyocytes exposed to gamma-ray irradiation.</p><p><b>METHODS</b>Primary cultured cardiomyocytes were irradiated with single-dose (20 Gy) gamma ray in the absence or presence of HGF (40 ng/ml) added in the cell culture 3 h before the exposure. Forty-eight hours after irradiation, the total cellular protein was measured and cell cycle analyzed by flow cytometry. The cardiomyoctes were also infected with AdGFP 48 h after irradiation and the fluorescence intensity of the green fluorescence protein (GFP) in the cells determined by flow cytometry 48 h after infection.</p><p><b>RESULTS</b>The protein synthesis was decreased significantly in the irradiated cardiomyocytes as compared with the control group (P<0.01), but was remedied significantly by incubation of the cells with HGF before the exposure (P<0.05). Flow cytometry revealed much lower mean fluorescence intensity (MFI) of GFP in irradiated cardiomycytes than in cells without the exposure (P<0.01); The MFI was higher in HGF-treated cardiomyocytes than in cells without HGF treatment following the exposure (P<0.01).</p><p><b>CONCLUSION</b>Gamma ray irradiation inhibits protein synthesis in cardiomyocytes, and HGF may attenuate this effect of gamma ray exposure for cardiomyocyte protection.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Radiation Effects
/
Protein Biosynthesis
/
Cell Cycle
/
Cells, Cultured
/
Rats, Wistar
/
Hepatocyte Growth Factor
/
Cell Biology
/
Myocytes, Cardiac
/
Green Fluorescent Proteins
Limits:
Animals
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2007
Type:
Article
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