Possible role of tau in mediating pathological effects of apoE4 in vivo prior to and following activation of the amyloid cascade.

Injection of the neprilysin inhibitor thiorphan into the brain induces the accumulation of Abeta in hippocampal CA1 neurons and septal neurons in apoE4 knock-in mice but not in mice that express the corresponding Alzheimer's disease benign isoform apoE3. We investigated the possible role of tau phosphorylation in mediating this synergistic pathological cross talk between apoE4 and the amyloid cascade. This revealed that in both apoE4 and apoE3 mice, activating the amyloid cascade by inhibiting neprilysin triggers the accumulation of AT100 phosphorylated tau in the perikarya of CA1 neurons.

Frontotemporal dementia with ubiquitinated neuronal inclusions and visuospatial impairment.

Dementia with ubiquitinated neuronal inclusions has been described only with frontotemporal dementia (FTD). The authors report a patient with progressive FTD accompanied by prominent impairments in visuospatial cognitive functions. Pathology was characterized by ubiquitin-positive intranuclear and cytoplasmic neuronal inclusions.

Mutation in codon 200 and polymorphism in codon 129 of the prion protein gene in Libyan Jews with Creutzfeldt-Jakob disease.

Various mutations in the prion protein (PrP) gene are associated with Creutzfeldt-Jakob disease (CJD), a transmissible fatal neurodegenerative disorder. Among Libyan Jews, CJD is a familial disease with an incidence about 100 times higher than the worldwide population. CJD in this community segregates with a point mutation at codon 200 of the PrP gene which causes the substitution of lysine for glutamate.

Pregnancy outcome in serologically indicated active Chlamydia trachomatis infection.

A serological test for chlamydial infection was administered to 281 Jerusalem women in order to determine the rate and influence of Chlamydia on pregnancy outcome. Serological indication of active infection was present in 7.8% of the tested women, while 15.