PDLA a potential new potent topical analgesic: a case report

Area of Science:

• Neuroscience
• Biomaterials Science
• Biochemistry

Background:

• L-lactate (lactate) serves critical roles in the nervous system as a fuel source for neural activity and as a neuromodulator.
• In the central nervous system, lactate is primarily produced by glial cells and transported to neurons for energy metabolism.
• Lactate dehydrogenase (LDH)1, prevalent in neurons, favors converting lactate to pyruvate for adenosine triphosphate (ATP) production.

Observation:

• Polymer D-lactic acid (PDLA), a hydrogel capable of rapidly and spontaneously sequestering lactate, was topically applied to an open wound.
• The study investigated the physiological effects of PDLA-mediated lactate sequestration in vivo.

Findings:

• Topical application of PDLA to an open wound resulted in the induction of analgesia.
• This suggests a direct correlation between PDLA's lactate-sequestering capability and pain relief.

Implications:

• The findings present a potential new therapeutic strategy for pain management by modulating lactate levels.
• This research may be the first to demonstrate that sequestering neuronal energy substrates like lactate can produce analgesia.
• Further research into PDLA's mechanism of action could unlock novel applications in pain control and neuroscience.