Influence of various glucose levels on the structure and function of cultured neonatal rats cardiomyocytes / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 1027-1031, 2008.
Article
Dans Chinois
| WPRIM
| ID: wpr-355839
ABSTRACT
<p><b>OBJECTIVE</b>To study the influence of various glucose levels on the structure and function of cultured neonatal rats cardiomyocytes.</p><p><b>METHOD</b>Cultured neonatal ventricular cardiomyocytes were treated with various glucose levels for 5 days control (5.5 mmol/L); high (25.5 mmol/L); intermittent high (5.5 mmol/L or 25.5 mmol/L in every 12 hours interval); high (25.5 mmol/L) + PKC inhibitor Ro-31-8220 (50 nmol/L). Then, the cell beating frequency was counted, the cardiomyocytes diameters were measured and the expressions of PKC-alpha, PKC-beta(2), p-PKC-alpha, p-PKC-beta(2), NF-kappaB and c-fos were determined by Western blot.</p><p><b>RESULTS</b>Compared with control group, cardiomyocytes beating frequency, diameters as well as the expressions of PKC-alpha, PKC-beta(2), p-PKC-alpha, p-PKC-beta(2), NF-kappaB and c-fos were significantly increased in high glucose concentration (all P < 0.05) and intermittent high glucose treatment further amplified these changes (all P < 0.05 vs. high glucose and control groups). High glucose induced changes could be significantly attenuated with PKC inhibitor Ro-31-8220.</p><p><b>CONCLUSION</b>High, especially intermittent high glucose could lead to diabetic cardiomyopathy by promoting cardiac hypertrophy, increasing beating frequency via activating PKC/NF-kappaB/c-fos pathways.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Protéine kinase C
/
Cellules cultivées
/
Facteur de transcription NF-kappa B
/
Rat Sprague-Dawley
/
Biologie cellulaire
/
Myocytes cardiaques
/
Glucose
/
Métabolisme
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
Chinese Journal of Cardiology
Année:
2008
Type:
Article
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