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Annotation

Savonenko AV, Melnikova T, Laird FM, Stewart KA, Price DL, Wong PC. Alteration of BACE1-dependent NRG1/ErbB4 signaling and schizophrenia-like phenotypes in BACE1-null mice. Proc Natl Acad Sci U S A . 2008 Apr 8 ; 105(14):5585-90. PubMed Abstract

Comments on Paper and Primary News
Primary News: Down to BACE-ics—Old Mouse a New Model for Schizophrenia?

Comment by:  Victor ChongCynthia Shannon Weickert (SRF Advisor)
Submitted 23 May 2008 Posted 23 May 2008

The findings of Savonenko et al. (2008) are an impressive addition to the growing evidence supporting a role for neuregulin-1 (NRG1) in schizophrenia pathology. The authors not only revealed a novel relationship between schizophrenia-like behavior and the loss of BACE1 proteolytic function, but also showed that this association results from disruption of BACE1-mediated NRG1 cleavage. These observations support the notion that aberrant processing of NRG1 may contribute to the development of schizophrenia-like phenotypes, providing a basis for examining other NRG1-cleaving pathways in the context of schizophrenia. Savonenko et al. were thorough in their behavioral assessment of the BACE1 mutant mice, convincingly showing that these animals exhibit schizophrenia-related behaviors that could be exacerbated by psychostimulants and improved by antipsychotic drug treatment.

What remains unclear, however, is the relationship between the NRG1/ErbB4 protein findings in the BACE1 mutant mouse brain and those previously reported in the schizophrenic human brain. For example, the...  Read more


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