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International Journal of Molecular Medicine
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Article Open Access

Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A

  • Authors:
    • Ruiyi Yang
    • Lu Wang
    • Jie Xie
    • Xiang Li
    • Shan Liu
    • Shengxiang Qiu
    • Yingjie Hu
    • Xiaoling Shen
  • View Affiliations / Copyright

    Affiliations: Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, P.R. China
    Copyright: © Yang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2329-2342
    |
    Published online on: August 23, 2018
       https://doi.org/10.3892/ijmm.2018.3836
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Abstract

The present study investigated the effects of cajanonic acid A (CAA), extracted from the leaves of Cajanus cajan (L.) Millsp with a purity of 98.22%, on the regulatory mechanisms of glucose and lipid metabolism. HepG2 cells transfected with a protein‑tyrosine phosphatase 1B (PTP1B) overexpression plasmid were established. The cells, induced with insulin resistance by dexamethasone (Dex) treatment, together with type 2 diabetes mellitus (T2DM) model rats and ob/ob mice, were used in the present study. The effects of CAA treatment on the differentiation of 3T3‑L1 adipocytes were determined using Oil Red O. The expression levels of insulin signaling factors were detected via reverse transcription‑quantitative polymerase chain reaction and western blot analyses. The results revealed that the overexpression of PTP1B contributed to insulin resistance, which was reversed by CAA treatment via inhibiting the activity of PTP1B and by regulating the expression of associated insulin signaling factors. The treatment of cell lines with Dex led to increased expression of PTP1B but decreased glucose consumption, and decreased tyrosine phosphorylation of insulin receptor, insulin receptor substrate 1, and phosphoinositide 3‑kinase. Treatment with CAA not only reduced the fasting blood glucose levels and protected organs from damage, but also reduced the serum fasting levels of total cholesterol, triglycerides and low‑density lipoprotein cholesterol in the T2DM rats. CAA treatment also inhibited adipocyte differentiation and decreased the mRNA levels of various adipogenic genes. Furthermore, CAA treatment restored the transduction of insulin signaling by regulating the expression of PTP1B and associated insulin signaling factors. Treatment with CAA also reduced the problems associated with hyperglycemia and hyperlipidemia. In conclusion, CAA may be used to cure T2DM via restoring insulin resistance and preventing obesity.
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Copy and paste a formatted citation
Spandidos Publications style
Yang R, Wang L, Xie J, Li X, Liu S, Qiu S, Hu Y and Shen X: Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A. Int J Mol Med 42: 2329-2342, 2018.
APA
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S. ... Shen, X. (2018). Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A. International Journal of Molecular Medicine, 42, 2329-2342. https://doi.org/10.3892/ijmm.2018.3836
MLA
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S., Hu, Y., Shen, X."Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A". International Journal of Molecular Medicine 42.5 (2018): 2329-2342.
Chicago
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S., Hu, Y., Shen, X."Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A". International Journal of Molecular Medicine 42, no. 5 (2018): 2329-2342. https://doi.org/10.3892/ijmm.2018.3836
Copy and paste a formatted citation
x
Spandidos Publications style
Yang R, Wang L, Xie J, Li X, Liu S, Qiu S, Hu Y and Shen X: Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A. Int J Mol Med 42: 2329-2342, 2018.
APA
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S. ... Shen, X. (2018). Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A. International Journal of Molecular Medicine, 42, 2329-2342. https://doi.org/10.3892/ijmm.2018.3836
MLA
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S., Hu, Y., Shen, X."Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A". International Journal of Molecular Medicine 42.5 (2018): 2329-2342.
Chicago
Yang, R., Wang, L., Xie, J., Li, X., Liu, S., Qiu, S., Hu, Y., Shen, X."Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A". International Journal of Molecular Medicine 42, no. 5 (2018): 2329-2342. https://doi.org/10.3892/ijmm.2018.3836
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