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Targeting the Main Sources of Reactive Oxygen Species Production: Possible Therapeutic Implications in Chronic Pain
Peng-Fei Cheng1, Yuan-He1, Meng-Meng Ge2
1Division of Colorectal Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China.
Abstract:
Humans have long been combating chronic pain. In clinical practice, opioids are firstchoice analgesics, but long-term use of these drugs can lead to serious adverse reactions. Finding new, safe and effective pain relievers that are useful treatments for chronic pain is an urgent medical need. Based on accumulating evidence from numerous studies, excess reactive oxygen species (ROS) contribute to the development and maintenance of chronic pain. Some antioxidants are potentially beneficial analgesics in the clinic, but ROS-dependent pathways are completely inhibited only by scavenging ROS directly targeting cellular or subcellular sites. Unfortunately, current antioxidant treatments do not achieve this effect. Furthermore, some antioxidants interfere with physiological redox signaling pathways and fail to reverse oxidative damage. Therefore, the key upstream processes and mechanisms of ROS production that lead to chronic pain in vivo must be identified to discover potential therapeutic targets related to the pathways that control ROS production in vivo. In this review, we summarize the sites and pathways involved in analgesia based on the three main mechanisms by which ROS are generated in vivo, discuss the preclinical evidence for the therapeutic potential of targeting these pathways in chronic pain, note the shortcomings of current research and highlight possible future research directions to provide new targets and evidence for the development of clinical analgesics.
Insights
Identifying the sources of reactive oxygen species (ROS) in chronic pain is crucial for developing new analgesics. Targeting ROS production pathways offers a promising strategy for effective pain relief.
Area of Science:
- Biomedical Science
- Pain Research
- Pharmacology
Background:
- Chronic pain affects millions, with opioids posing risks due to long-term use.
- Excessive reactive oxygen species (ROS) are implicated in chronic pain development and persistence.
- Current antioxidant therapies are limited in their ability to fully inhibit ROS or avoid disrupting physiological processes.
Purpose of the Study:
- To review mechanisms of ROS generation in vivo relevant to chronic pain.
- To discuss preclinical evidence for targeting ROS production pathways as analgesics.
- To identify future research directions for novel pain management strategies.
Main Methods:
- Literature review of studies on ROS generation and chronic pain.
- Analysis of preclinical data on targeting ROS pathways for analgesia.
- Synthesis of information on current limitations and future research needs.
Main Results:
- ROS contribute significantly to chronic pain through specific in vivo generation pathways.
- Targeting these upstream ROS production mechanisms shows therapeutic potential in preclinical models.
- Existing antioxidant approaches have limitations in efficacy and specificity.
Conclusions:
- Understanding ROS production pathways is key to developing safer, effective chronic pain treatments.
- Targeting specific ROS generation mechanisms offers a promising therapeutic avenue.
- Further research is needed to translate these findings into clinical analgesics.
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