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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Published on: August 12, 2013

A Molecular Model for Lithium's Bioactive Form.

Katharine T Briggs¹, Gary G Giulian¹, Gong Li²

¹Institute for Bioscience and Biotechnology Research, University of Maryland, National Institute of Standards and Technology, Rockville, Maryland.

Biophysical Journal

|July 28, 2016

Summary

This summary is machine-generated.

Lithium carbonate, used for bipolar disorder, may stabilize mood by forming a complex with magnesium-bound adenosine triphosphate (ATP). This interaction in neuronal cells suggests a novel molecular mechanism for lithium

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Area of Science:

Neuroscience
Biochemistry
Pharmacology

Background:

Lithium carbonate is a primary treatment for bipolar disorder, offering mood stabilization.
The precise molecular mechanism underlying lithium's therapeutic effects remains largely unknown.
Understanding lithium's action is crucial for optimizing its use and developing new therapies.

Purpose of the Study:

To elucidate the molecular mechanism of lithium action in the brain.
To investigate the interaction of lithium with key cellular components.
To identify potential targets for lithium's mood-stabilizing effects.

Main Methods:

Utilized nuclear magnetic resonance (NMR) spectroscopy to study lithium interactions.
Characterized the binding of lithium with adenosine triphosphate (ATP) and magnesium (Mg2+).
Quantified the affinity of lithium for forming a bimetallic (Mg·Li) ATP complex.

Main Results:

Identified a novel bimetallic complex: (Mg·Li) ATP.
Determined lithium's high affinity for Mg2+-bound phosphate sites in ATP (Kd ≈ 1.6 mM).
This affinity is physiologically relevant given typical lithium, Mg2+, and ATP concentrations.

Conclusions:

Lithium can associate with magnesium-bound phosphate sites on ATP.
This interaction suggests a molecular basis for lithium's modulation of purinergic receptor activity.
Provides a potential in vivo mechanism for lithium's mood-stabilizing effects in bipolar disorder.