Lithium Protects Against Anaesthesia Neurotoxicity In The Infant Primate Brain

Area of Science:

• Neuroscience
• Developmental Neuroscience
• Pharmacology

Background:

• Anesthetic drug exposure in infant animals and humans is linked to neurodevelopmental impairment (NDI).
• Millions of infants undergo anesthesia annually, raising concerns about potential long-term cognitive deficits.
• Lithium (Li) demonstrates neuroprotective effects in various brain injury models.

Purpose of the Study:

• To investigate the neuroprotective potential of lithium against anesthesia-induced neurotoxicity in infant non-human primates (NHPs).
• To determine if lithium can prevent apoptosis of neurons and oligodendrocytes caused by isoflurane anesthesia.

Main Methods:

• Infant NHPs were administered isoflurane (ISO) anesthesia for 5 hours on postnatal day 6.
• Co-administration of clinically relevant doses of lithium (Li) was given alongside isoflurane.
• Apoptosis of neurons and oligodendrocytes was assessed post-anesthesia.

Main Results:

• Lithium completely prevented acute isoflurane-induced neuroapoptosis in infant NHPs.
• Lithium significantly reduced isoflurane-induced apoptosis of oligodendrocytes.
• These results indicate a neuroprotective effect of lithium against anesthetic neurotoxicity.

Conclusions:

• Lithium shows promise as a neuroprotective agent against anesthetic-induced brain injury in developing primates.
• Pharmacological manipulation with lithium may safeguard the developing brain from anesthetic neurotoxicity without compromising anesthetic efficacy.
• Further research is warranted to confirm lithium's efficacy in preventing long-term NDI and assess its safety in human infants.