Effect of naringin on oxidative stress and endoplasmic reticulum stress in diabetic cardiomyopathy.
10.19540/j.cnki.cjcmm.2018.0013
- Author:
Yu-Fei ZHANG
1
;
Na-Na MENG
2
;
Hou-Zhong LI
3
;
Yi-Jie WEN
2
;
Jie-Ting LIU
2
;
Chun-Lei ZHANG
2
;
Xiao-Huan YUAN
2
;
Xiu-Dong JIN
1
Author Information
1. Department of Physiology， School of Basic Medical Sciences， Heilongjiang University of Traditional Chinese Medicine， Harbin 150040， China.
2. Heilongjiang Key Laboratory of Anti-fibrosis Biotherapy， Mudanjiang Medical University， Mudanjiang 157011， China.
3. Department of Pharmacy， Mudanjiang Medical University， Mudanjiang 157011， China.
- Publication Type:Journal Article
- Keywords:
diabetic cardiomyopathy;
endoplasmic reticulum stress;
naringin;
oxidative stress
- MeSH:
Animals;
Apoptosis;
Cardiotonic Agents;
pharmacology;
Caspase 12;
metabolism;
Diabetes Mellitus, Experimental;
Diabetic Cardiomyopathies;
drug therapy;
Endoplasmic Reticulum Stress;
drug effects;
Flavanones;
pharmacology;
Heat-Shock Proteins;
metabolism;
Male;
Malondialdehyde;
metabolism;
Oxidative Stress;
drug effects;
Rats;
Rats, Sprague-Dawley;
Superoxide Dismutase;
metabolism;
Transcription Factor CHOP;
metabolism
- From:
China Journal of Chinese Materia Medica
2018;43(3):596-602
- CountryChina
- Language:Chinese
-
Abstract:
To explore the protective effect of naringin(Nar) on the injury of myocardium tissues induced by streptozotocin(STZ) in diabetic rats and the relationship with oxidative stress and endoplasmic reticulum stress(ERS)， the male SD rats were intraperitoneally injected with streptozotocin(STZ， 60 mg·kg⁻¹) to establish the diabetic rat model and then randomly divided into the type 1 diabetic rat group(T1DR)， the low-dose Nar group(Nar25)， the middle-dose Nar group(Nar50) and the high-dose Nar group(Nar100). The normal rats were designed as control group(Con). Nar25， Nar50， Nar100 groups were orally administered with Nar at the doses of 25.0， 50.0， 100.0 mg·kg⁻¹ per day， respectively， while the normal group and the T1DR group were orally administered with saline. At the 8th week after treatment， fasting plasma glucose and heart mass index were measured. The pathological changes in myocardial tissues were observed by microscope. The cardiac malondialdehyde(MDA) level and superoxide dismutase(SOD) activities were measured. The gene and protein expressions of glucose-regulated protein 78(GRP78)， C/EBP homologous protein(CHOP)， cysteinyl aspartate-specific proteinase 12(caspase 12) were detected by qRT-PCR and Western blot. According to the results， compared with control group， the myocardial structure was damaged， the content of MDA was increased， while the activities of SOD were decreased(<0.05) in T1DR group. GRP78， CHOP and caspase 12 mRNA and protein expressions were increased significantly in T1DR group(<0.05， <0.01). Compared with T1DR group， myocardial structure damage was alleviated in Nar treatment group. The content of MDA was decreased， while the activities of SOD were increased significantly. The mRNA and protein expressions of GRP78， CHOP and caspase 12 were increased， especially in middle and high-dose groups(<0.05， <0.01). After treatment with Nar for 8 weeks， myocardial structure damage was obviously alleviated in Nar treatment groups. The content of MDA was decreased， while the activities of SOD were increased significantly in myocardial tissues. The mRNA and protein expressions of GRP78， CHOP and caspase 12 were increased， especially in middle and high-dose groups(<0.05， <0.01). The findings suggest that Nar may protect myocardium in diabetic rats by reducing mitochondrial oxidative stress injuries and inhibiting the ERS-mediated cell apoptosis pathway.
