Valérie Buée-Scherrer

Learn More
Tau proteins belong to the family of microtubule-associated proteins. They are mainly expressed in neurons where they play an important role in the assembly of tubulin monomers into microtubules to constitute the neuronal microtubules network. Microtubules are involved in maintaining the cell shape and serve as tracks for axonal transport. Tau proteins also(More)
Stress-activated protein kinase-3 (SAPK3), a recently described MAP kinase family member with a wide-spread tissue distribution, was transfected into several mammalian cell lines and shown to be activated in response to cellular stresses, interleukin-1 (IL-1) and tumour necrosis factor (TNF) in a similar manner to SAPK1 (also termed JNK) and SAPK2 (also(More)
In neurodegenerative disorders, hyperphosphorylated tau proteins aggregate into abnormal filaments. In the present study, tau protein alterations were studied in one corticobasal degeneration and seven Pick’s disease cases using specific immunological probes. The typical lesions of corticobasal degeneration and Pick’s disease were revealed by(More)
Alzheimer's disease is characterized by an intraneuronal aggregation of hyperphosphorylated tau proteins into paired helical filaments. The hyperphosphorylation of tau proteins induces a decrease in their electrophoretic mobility, resulting in a pathological tau triplet referred to as tau 55, 64 and 69 or tau-PHF. We have developed monoclonal antibodies(More)
Mutations in the tau gene have been described in families affected by frontotemporal dementia with parkinsonism linked to chromosome 17. The authors performed a genetic and biochemical analysis of this gene and its product in the parkinsonism dementia complex of Guam, a disorder characterized by the extensive formation of neurofibrillary tangles. The tau(More)
Mechanisms for selective targeting to unique subcellular sites play an important role in determining the substrate specificities of protein kinases. Here we show that stress-activated protein kinase-3 (SAPK3, also called ERK6 and p38gamma), a member of the mitogen-activated protein kinase family that is abundantly expressed in skeletal muscle, binds through(More)
It is becoming increasingly apparent that non-neuronal cells play a critical role in generating and regulating the flow of information within the brain. Among these non-neuronal cells, astroglial cells have been shown to play important roles in the control of both synaptic transmission and neurosecretion. In addition to modulating neuronal activity,(More)
BACKGROUND There is a growing interest in the involvement of anesthetic agents in the etiology of postoperative cognitive dysfunction. Recent animal studies suggest that acute anesthesia induces transient hyperphosphorylation of tau, an effect essentially ascribed to hypothermia. The main aim of the present study was to investigate effects, in normothermic(More)
Frontotemporal lobe degeneration includes a large spectrum of neurodegenerative disorders. Patients with frontotemporal dementia with parkinsonism linked to chromosome 17 exhibit heterogeneity in both clinical and neuropathological features. Here, we report the case of a young patient with a G389R mutation. This teenager girl was 17 years old when she(More)
Tau pathology is characterized by intracellular aggregates of abnormally and hyperphosphorylated tau proteins. It is encountered in many neurodegenerative disorders, but also in aging. These neurodegenerative disorders are referred to as tauopathies. Comparative biochemistry of the tau aggregates shows that they differ in both tau isoform phosphorylation(More)