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Updated: Jan 31, 2026
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The Preparation of Oblique Spinal Cord Slices for Ventral Root Stimulation
Published on: October 13, 2016
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Combined Neuroprotective Effects of N,N-Dimethyltryptamine and Ventral Root Reimplantation Following Spinal Root
Paola Andrea Caro Aponte1, Edison Huertas Montoya2, Italo O Mazali2
1Laboratory of Nerve Regeneration, University of Campinas (IB/UNICAMP), Campinas, Brazil.
Journal of Neurochemistry
|January 30, 2026
Summary
A novel combinatorial therapy using Mimosa tenuiflora extract (DMT) and ventral root repair (VRR) shows promise for treating central and peripheral nervous system injuries. This approach significantly enhances neuronal survival and neurotrophic support, offering new hope for nerve regeneration.
Area of Science:
- Neuroscience
- Regenerative Medicine
- Pharmacology
Background:
- Injuries at the CNS/PNS interface lack effective treatments due to complex pathophysiology and limited single-target therapy efficacy.
- Ventral root avulsion (VRA) causes significant motor neuron (MN) loss and synaptic dysfunction.
- Developing combinatorial strategies is crucial for addressing these complex neural injuries.
Purpose of the Study:
- To investigate a novel combinatorial therapeutic strategy integrating surgical ventral root repair (VRR) with fibrin sealant biopolymer (FSB) and Mimosa tenuiflora extract (DMT) in a rat model of VRA.
- To determine the optimal therapeutic dose of DMT for neuroprotection.
- To evaluate the synergistic effects of combined VRR and DMT therapy on neuronal survival and gene expression.
Main Methods:
- Adult female Lewis rats underwent unilateral L4-L6 VRA.
- DMT was extracted from Mimosa tenuiflora roots and administered daily (1, 2.5, or 5 mg/kg; i.p.) for 2 weeks to determine the optimal dose.
- The optimal DMT dose was combined with VRR, with evaluations conducted 2 weeks post-injury.
- Outcome measures included neuronal survival, glial reactivity, synaptic preservation, and gene expression of neurotrophic and anti-apoptotic factors.
Main Results:
- DMT at 1 mg/kg demonstrated significant neuroprotection, enhancing MN survival, reducing glial reactivity, and preserving pre-synaptic boutons.
- The combination of VRR and DMT therapy further potentiated these neuroprotective effects.
- Combined VRR + DMT therapy significantly upregulated GDNF expression, indicating synergistic neurotrophic support.
Conclusions:
- DMT exhibits promising neuroprotective properties for treating motor neuron degeneration following CNS/PNS interface injuries.
- Combinatorial therapy integrating DMT with VRR offers enhanced therapeutic benefits for nerve regeneration.
- This strategy holds potential for developing more effective treatments for complex neural injuries.
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