Issue 6, 2016

Lead neurotoxicity: exploring the potential impact of lead substitution in zinc-finger proteins on mental health

Abstract

Childhood lead poisoning is a costly and largely preventable public health problem that lowers IQs, decreases attention spans, and leads to the development of other childhood intellectual disabilities. Furthermore, recent evidence links developmental lead poisoning with the etiology of disorders that appear much later in life, such as Alzheimer's disease, Parkinson's disease, and schizophrenia. Little is known about how lead influences the onset of these disorders. This paper reviews the evidence that lead substitution for zinc in zinc-finger proteins contributes to the development of Alzheimer's disease, Parkinson's disease, and schizophrenia. The zinc-finger proteins potentially impacted by lead include DNA methyltransferase 1 (DNMT1) and Presenilin 1 and 2 (PSEN1/2) in Alzheimer's disease, the dopamine receptor in Parkinson's disease, and the NMDA receptor, zinc-finger protein 804A (ZNF804A), and disrupted-in-schizophrenia 1 (DISC1)-binding zinc-finger (DBZ) in schizophrenia.

Graphical abstract: Lead neurotoxicity: exploring the potential impact of lead substitution in zinc-finger proteins on mental health

Article information

Article type
Critical Review
Submitted
23 Nov. 2015
Accepted
21 Dec. 2015
First published
24 Dec. 2015

Metallomics, 2016,8, 579-588

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