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Article

The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro

  • Authors:
    • Xiaodong Sun
    • Fang Han
    • Junling Yi
    • Ningning Hou
    • Zhibin Cao
  • View Affiliations / Copyright

    Affiliations: Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang, Shangdong 261031, P.R. China, Department of Pathology, The Affiliated Hospital of Weifang Medical University, Weifang, Shangdong 261031, P.R. China, Department of Obstetrics, Qingdao Municipal Hospital (East), Qingdao, Shandong 266003, P.R. China
  • Pages: 1636-1640
    |
    Published online on: February 28, 2013
       https://doi.org/10.3892/mmr.2013.1350
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Abstract

Serious complications as a result of type 2 diabetes mellitus (T2DM) are becoming a major health concern. In the present study, it was hypothesized that telomerase activity is upregulated in vascular smooth muscle cells (VSMCs) during proliferation in T2DM and that the application of telomerase inhibitors impedes the proliferation of VSMCs in vitro. Male Wistar rats were randomly allocated into the normal control (NC) or diabetic (DM) group. Diabetes was induced by high‑fat feeding and a low dose of streptozotocin (STZ; 30 mg/kg). Primary VSMC cultures were exposed to normal (5.5 mM) or high (25 mM) glucose and insulin (100 nM) in the presence and absence of various concentrations of antisense oligoribonucleotides (ASODNs) for varying lengths of time. Telomerase activity and the proliferation of VSMCs were measured. Results showed that there was a significant increase in the levels of fasting glucose, insulin, triglycerides (TG) and free fatty acids (FFAs) in the diabetic group. Telomerase activity and the proliferation of VSMCs were significantly higher in the diabetic group in vivo and in the high glucose and insulin (HGI)-treated group in vitro (P<0.01). ASODNs significantly inhibited the proliferation of VSMCs in a concentration- and time‑dependent manner (P<0.01). In conclusion, hyperglycemia and hyperinsulinemia stimulate telomerase activity and the proliferation of VSMCs, while the inhibition of telomerase activity reduces the proliferation of VSMCs, indicating that telomerase may be involved in the pathological process of diabetic vascular disease.
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Copy and paste a formatted citation
Spandidos Publications style
Sun X, Han F, Yi J, Hou N and Cao Z: The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro. Mol Med Rep 7: 1636-1640, 2013.
APA
Sun, X., Han, F., Yi, J., Hou, N., & Cao, Z. (2013). The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro. Molecular Medicine Reports, 7, 1636-1640. https://doi.org/10.3892/mmr.2013.1350
MLA
Sun, X., Han, F., Yi, J., Hou, N., Cao, Z."The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro". Molecular Medicine Reports 7.5 (2013): 1636-1640.
Chicago
Sun, X., Han, F., Yi, J., Hou, N., Cao, Z."The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro". Molecular Medicine Reports 7, no. 5 (2013): 1636-1640. https://doi.org/10.3892/mmr.2013.1350
Copy and paste a formatted citation
x
Spandidos Publications style
Sun X, Han F, Yi J, Hou N and Cao Z: The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro. Mol Med Rep 7: 1636-1640, 2013.
APA
Sun, X., Han, F., Yi, J., Hou, N., & Cao, Z. (2013). The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro. Molecular Medicine Reports, 7, 1636-1640. https://doi.org/10.3892/mmr.2013.1350
MLA
Sun, X., Han, F., Yi, J., Hou, N., Cao, Z."The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro". Molecular Medicine Reports 7.5 (2013): 1636-1640.
Chicago
Sun, X., Han, F., Yi, J., Hou, N., Cao, Z."The effect of telomerase activity on vascular smooth muscle cell proliferation in type 2 diabetes in vivo and in vitro". Molecular Medicine Reports 7, no. 5 (2013): 1636-1640. https://doi.org/10.3892/mmr.2013.1350
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