How Glial TNFα Affects Neuropathic Pain from HIV
Author Information
Author(s): Zheng Wenwen, Ouyang Handong, Zheng Xuexing, Liu Shue, Mata Marina, Fink David J, Hao Shuanglin
Primary Institution: University of Michigan
Hypothesis
This study investigates the role of spinal TNFα released from glia in HIV-related neuropathic pain.
Conclusion
The study found that TNFα in the spinal cord and DRG is involved in neuropathic pain following HIV gp120 application, and blocking TNFα can reverse this pain.
Supporting Evidence
- Peripheral gp120 application induced mechanical allodynia for more than 7 weeks.
- Spinal TNFα was colocalized with GFAP and Iba1, indicating glial production.
- Intrathecal administration of TNFα siRNA or soluble TNF receptor reduced mechanical allodynia.
Takeaway
When a virus related to HIV is applied to rats, it causes pain by making certain brain cells release a substance called TNFα, but blocking this substance can help reduce the pain.
Methodology
The study used a rat model where gp120 was applied to the sciatic nerve, and various assessments were made on pain behavior and TNFα expression.
Participant Demographics
Male Sprague-Dawley rats weighing 225-250 g.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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