title: Knockout mice reveal a role for protein tyrosine phosphatase H1 in cognition.
abstract: BACKGROUND
  The present study has investigated the protein tyrosine phosphatase H1 (PTPH1) expression pattern in mouse brain and its impact on CNS functions.
  
  
  METHODS
  We have previously described a PTPH1-KO mouse, generated by replacing the PTP catalytic and the PDZ domain with a LacZ neomycin cassette. PTPH1 expression pattern was evaluated by LacZ staining in the brain and PTPH1-KO and WT mice (n = 10 per gender per genotype) were also behaviorally tested for CNS functions.
  
  
  RESULTS
  In CNS, PTPH1 is expressed during development and in adulthood and mainly localized in hippocampus, thalamus, cortex and cerebellum neurons. The behavioral tests performed on the PTPH1-KO mice showed an impact on working memory in male mice and an impaired learning performance at rotarod in females.
  
  
  CONCLUSIONS
  These results demonstrate for the first time a neuronal expression of PTPH1 and its functionality at the level of cognition.
authors.affiliation: MerckSerono Ivrea, Colleretto G, (TO) 10010, Italy. claudia.patrignani@merckserono.net.
authors.forename: Claudia
authors.initials: C
authors.lastname: Patrignani
authors.forename: Maria Chiara
authors.initials: MC
authors.lastname: Magnone
authors.forename: Patrizia
authors.initials: P
authors.lastname: Tavano
authors.forename: Michele
authors.initials: M
authors.lastname: Ardizzone
authors.forename: Valeria
authors.initials: V
authors.lastname: Muzio
authors.forename: Béatrice
authors.initials: B
authors.lastname: Gréco
authors.forename: Paola F
authors.initials: PF
authors.lastname: Zaratin