Zinc: an underappreciated modulatory factor of brain function

Area of Science:

• Neuroscience
• Biochemistry
• Molecular Biology

Background:

• Zinc is the second most abundant metal in the human body, vital for numerous cellular functions.
• Proper zinc homeostasis is critical, as both deficiency and excess lead to pathological conditions.
• Zinc acts as a cofactor in protein folding, DNA recognition, and ion channel modulation.

Purpose of the Study:

• To review the role of zinc in the central nervous system (CNS).
• To discuss the association between the zinc transporter ZIP8 and schizophrenia.
• To explore the therapeutic potential of targeting zinc transporters for neurological disorders.

Main Methods:

• Literature review of recent findings on zinc's role in the CNS.
• Analysis of zinc transporter functions (ZnT and ZIP families).
• Discussion of zinc's impact on ion channel activity and CNS pathophysiology.

Main Results:

• Zinc is concentrated in synaptic vesicles of glutamatergic neurons, released during neurotransmission.
• Low zinc concentrations modulate various ion channels, impacting CNS function.
• Recent findings link the zinc transporter ZIP8 to schizophrenia.

Conclusions:

• Zinc transporters are critical for maintaining zinc homeostasis in the brain.
• Modulation of ion channels by zinc is relevant to CNS disorders like epilepsy, schizophrenia, and Alzheimer's disease.
• Targeting zinc transporters may offer novel therapeutic strategies for neurological conditions.