Targeting AGE‐RAGE signaling pathway by Saxagliptin prevents myocardial injury in isoproterenol challenged diabetic rats

2021 ◽  
Author(s):  
Rajiv Kumar ◽  
Poorva Bhargava ◽  
Kapiil Suchal ◽  
Jagriti Bhatia ◽  
Dharamvir Singh Arya
Keyword(s):  
Signaling Pathway ◽  
Myocardial Injury ◽  
Diabetic Rats

scholarly journals Role of TLR4/MyD88/NF-κB signaling in heart and liver-related complications in a rat model of type 2 diabetes mellitus

2021 ◽  
Vol 49 (3) ◽  
pp. 030006052199759
Author(s):  
Jiajia Tian ◽  
Yanyan Zhao ◽  
Lingling Wang ◽  
Lin Li
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Signaling Pathway ◽  
Rat Model ◽  
Fasting Blood Glucose ◽  
Diabetic Rats ◽  
Primary Response ◽  
Monocyte Chemoattractant Protein 1

Aims To analyze expression of members of the Toll-like receptor (TLR)4/myeloid differentiation primary response 88 (MyD88)/nuclear factor (NF)-κB signaling pathway in the heart and liver in a rat model of type 2 diabetes mellitus (T2DM). Our overall goal was to understand the underlying pathophysiological mechanisms. Methods We measured fasting blood glucose (FBG) and insulin (FINS) in a rat model of T2DM. Expression of members of the TLR4/MyD88/NF-κB signaling pathway as well as downstream cytokines was investigated. Levels of mRNA and protein were assessed using quantitative real-time polymerase chain reaction and western blotting, respectively. Protein content of tissue homogenates was assessed using enzyme-linked immunosorbent assays. Results Diabetic rats had lower body weights, higher FBG, higher FINS, and higher intraperitoneal glucose tolerance than normal rats. In addition, biochemical indicators related to heart and liver function were elevated in diabetic rats compared with normal rats. TLR4 and MyD88 were involved in the occurrence of T2DM as well as T2DM-related heart and liver complications. TLR4 caused T2DM-related heart and liver complications through activation of NF-κB. Conclusions TLR4/MyD88/NF-κB signaling induces production of tumor necrosis factor-α, interleukin-6, and monocyte chemoattractant protein-1, leading to the heart- and liver-related complications of T2DM.

Curcumin prevents diabetic cardiomyopathy in streptozotocin-induced diabetic rats: Possible involvement of PKC–MAPK signaling pathway

2012 ◽  
Vol 47 (3) ◽  
pp. 604-614 ◽  
Author(s):  
Vivian Soetikno ◽  
Flori R. Sari ◽  
Vijayakumar Sukumaran ◽  
Arun Prasath Lakshmanan ◽  
Sayaka Mito ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Diabetic Cardiomyopathy ◽  
Mapk Signaling ◽  
Diabetic Rats ◽  
Mapk Signaling Pathway

Role of EBAF/Nodal/p27 signaling pathway in development of placenta in normal and diabetic rats

2021 ◽  
Author(s):  
Qianqian Gao ◽  
Lina Guan ◽  
Renzhi Hou ◽  
Rui Meng ◽  
Qian Li ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Diabetic Rats

scholarly journals PO-086 Exercise enhances cardiac antioxidant capacity in diabetic rats through the Keap1/Nrf2 signaling pathway

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
Shiqiang Wang
Keyword(s):  
Oxidative Stress ◽  
Blood Glucose ◽  
Protein Expression ◽  
Signaling Pathway ◽  
Diabetic Rats ◽  
Heart Weight ◽  
Stress Injury ◽  
Myocardial Oxidative Stress ◽  
Nrf2 Signaling Pathway ◽  
Gene And Protein Expression

Objective To investigate the effects of exercise on the myocardial oxidative stress injury of diabetic rats, and discussed the role of Keap1/Nrf2 signaling pathway in this process Methods  Tyep 2 diabetic rat model was established by streptozotocin injection through abdominal cavity and high fat diet. The all the diabetic rats were divided into three groups: control group (NC), diabetes group(T2DM) and diabetes exercise group, NC and T2DM group were kept quiet for 8 weeks, T2DME group was trained for 8 weeks. After the exercise, weight, heart weight and blood were measured. MDA, T-SOD and GSH-PX enzyme were measured by biochemical method. Ho-1, Keap1, Nrf2 gene and protein expression were detected by RT-PCR and WesternBlotting. Results Compared with NC group, the weight of rats in the T2DM group significantly decreased [(528+/-71g vs 362+/-33g), P<0.05], HWI  significantly increased [(2.845+/-0.22 vs 3.841+/-0.21, P <0.05], blood glucose was significantly increased [(6.4±3.8 vs 26±7.5mmol/L), P <0.01],T-SOD and GSH-PX activity decreased significantly (P<0.05), Ho-1 protein expression increased (P<0.01), Keap1 and Nrf2 showed no significant changes, and Nrf2 nuclear transposition decreased (P<0.05). Compared with the T2DM group, no significant change in body weight and heart weight in the T2DME group, with significant decrease in HWI[（3.841±0.21 vs 3.235±0.23），P＜0.05], with significant decrease in blood glucose [（26.0±7.5 vs 21.0±6.8），P＜0.05]. Ho-1 gene and protein expression increased significantly（P＜0.05and P＜0.01）, with no significant change of Keap1, while Nrf2 expression increased significantly (P < 0.05), and Nrf2 nuclear transposition increased significantly (P < 0.01). Conclusions Exercise activates the myocardial Keap1/Nrf2 signaling pathway in rats, promotes the expression of downstream antioxidant enzymes, increases cardiac antioxidant capacity, and resists diabetic myocardial oxidative stress injury.

Sign in / Sign up

Export Citation Format

Share Document