Related Experiment Video
Updated: Jul 24, 2025
A Mouse Model of Orthopedic Surgery to Study Postoperative Cognitive Dysfunction and Tissue Regeneration
Published on: February 27, 2018
Ru360 Alleviates Postoperative Cognitive Dysfunction in Aged Mice by Inhibiting MCU-Mediated Mitochondrial
Xiaoxiao Xu1, Bin Zhou1, Jun Liu1
1The First Hospital of Ningbo University, Ningbo, 315211, People's Republic of China.
Purpose:
Ru360, a selective inhibitor of mitochondrial calcium uptake, maintains mitochondrial calcium homeostasis. To evaluate whether mitochondrial calcium uniporter (MCU)-mediated mitochondrial function is associated with the pathological process of Postoperative cognitive dysfunction (POCD), elucidate its relationship with neuroinflammation, and observe whether the relevant pathological process can be improved with Ru360.
Methods:
Aged mice underwent experimental open abdominal surgery after anesthesia. Open field tests, Novel object recognition tests and Y Maze Tests were used to conduct behavioral experiments. The reactive oxygen species (ROS) content, the levels of inflammatory cytokines interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), intra-mitochondrial calcium, mitochondrial membrane potential (MMP) and the activity of antioxidant superoxide dismutase (SOD) in the hippocampus of mice were detected using kits. The expression of proteins was detected using Western blot.
Results:
After treatment with Ru360, MCU-mediated mitochondrial dysfunction was inhibited, neuroinflammation was reduced, and the learning ability of the mice was improved after surgery.
Conclusion:
Our study demonstrated that mitochondrial function plays a crucial role in the pathology of POCD, and using Ru360 to improve mitochondrial function may be a new and necessary direction for the treatment of POCD.
Insights
Mitochondrial calcium uptake is linked to postoperative cognitive dysfunction (POCD). Inhibiting this process with Ru360 improved cognitive function and reduced neuroinflammation in mice, suggesting a new treatment approach for POCD.
Area of Science:
- Neuroscience
- Mitochondrial Biology
- Pharmacology
Background:
- Postoperative cognitive dysfunction (POCD) is a common complication, particularly in aged individuals.
- Mitochondrial calcium homeostasis is critical for neuronal function.
- The role of mitochondrial calcium uniporter (MCU)-mediated function in POCD and its link to neuroinflammation remain unclear.
Purpose of the Study:
- To investigate the association between MCU-mediated mitochondrial function and POCD.
- To elucidate the relationship between mitochondrial dysfunction, neuroinflammation, and POCD.
- To evaluate the therapeutic potential of Ru360, a selective mitochondrial calcium uptake inhibitor, in ameliorating POCD.
Main Methods:
- Aged mice underwent experimental abdominal surgery under anesthesia.
- Behavioral tests (Open field, Novel object recognition, Y Maze) assessed cognitive function.
- Hippocampal tissue analysis included reactive oxygen species (ROS), inflammatory cytokines (IL-1β, IL-6, TNF-α), intra-mitochondrial calcium, mitochondrial membrane potential (MMP), and superoxide dismutase (SOD) activity.
- Protein expression was analyzed using Western blot.
Main Results:
- Ru360 treatment inhibited MCU-mediated mitochondrial dysfunction.
- Neuroinflammation markers were significantly reduced in the hippocampus.
- Mice treated with Ru360 showed improved learning and memory abilities post-surgery.
- Mitochondrial calcium homeostasis was maintained by Ru360.
Conclusions:
- Mitochondrial function is a critical factor in the pathogenesis of POCD.
- Targeting mitochondrial calcium uptake with Ru360 demonstrates therapeutic potential for POCD.
- Improving mitochondrial function represents a promising therapeutic strategy for preventing and treating POCD.
