Tanshinone IIA ameliorates diabetic cardiomyopathy by inhibiting Grp78 and CHOP expression in STZ‑induced diabetes rats | Zendy

Shuliang Tao | Zendy; Liuyin Chen | Zendy; Jingmei Song | Zendy; Ningning Zhu | Zendy; Xueyi Song | Zendy; Ruoli Shi | Zendy; Gang-feng Ge | Zendy; Yueming Zhang | Zendy

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Tanshinone IIA ameliorates diabetic cardiomyopathy by inhibiting Grp78 and CHOP expression in STZ‑induced diabetes rats

Author(s) -

Shuliang Tao,

Liuyin Chen,

Jingmei Song,

Ningning Zhu,

Xueyi Song,

Ruoli Shi,

Gang-feng Ge,

Yueming Zhang

Publication year - 2019

Publication title -

experimental and therapeutic medicine

Language(s) - English

Resource type - Journals

eISSN - 1792-1015

pISSN - 1792-0981

DOI - 10.3892/etm.2019.7580

Subject(s) - diabetic cardiomyopathy , salvia miltiorrhiza , streptozotocin , diabetes mellitus , oxidative stress , medicine , unfolded protein response , chop , apoptosis , endocrinology , cardiac function curve , endoplasmic reticulum , pharmacology , cardiomyopathy , chemistry , heart failure , traditional chinese medicine , biochemistry , pathology , chemotherapy , alternative medicine

Diabetic cardiomyopathy (DCM), one of the common diabetic complications, causes a high rate of mortality in patients with diabetes. Tanshinone IIA (TSIIA), one of the components of Salvia miltiorrhiza (Danshen), has anti-oxidative stress activity and is widely used to treat diabetes-associated diseases. However, its efficacy on DCM remains unclear. The present study aimed to investigate the potential therapeutic function of TSIIA on DCM in an experimental diabetic rat model. Streptozotocin (STZ)-induced diabetic rats were intraperitoneally injected with TSIIA for 6 weeks. The present results indicated that blood glucose concentration was slightly reduced in the low-dose TSIIA treatment group. TSIIA injection was also noted to improve cardiac function, and restore loss of mitochondrial cristae, swollen mitochondrial matrix and disorganized myofibrils in myocardial cells, which are thought to be characteristics of apoptosis. Furthermore, TSIIA injection could increase the activity of superoxide dismutase in STZ-induced diabetic rats, and suppress the endoplasmic reticulum (ER) stress signaling pathway via reducing the expression of glucose-regulated protein 78 and C/EBP homologous protein. These results provide evidence that TSIIA may ameliorate DCM in diabetic rats, possibly via suppressing oxidative stress and ER stress activation.

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