alexa Intraneuronal Aβ as a trigger for neuron loss: can this be translated into human pathology?
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Bayer TA, Wirths O

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Abstract In the present review, we summarize the current achievements of modelling early intraneuronal Aβ (amyloid β-peptide) accumulation in transgenic mice with the resulting pathological consequences. Of special importance will be to discuss recent developments and the translation of the results to AD (Alzheimer's disease). N-terminally truncated AβpE3 (Aβ starting with pyroglutamate at position 3) represents a major fraction of all Aβ peptides in the brain of AD patients. Recently, we generated a novel mAb (monoclonal antibody), 9D5, that selectively recognizes oligomeric assemblies of AβpE3 and demonstrated the potential involvement of oligomeric AβpE3 in vivo using transgenic mouse models as well as human brains from sporadic and familial AD cases. 9D5 showed an unusual staining pattern with almost non-detectable plaques in sporadic AD patients and non-demented controls. Interestingly, in sporadic and familial AD cases prominent intraneuronal staining was observed. Moreover, passive immunization of 5XFAD mice with 9D5 significantly reduced overall Aβ levels and stabilized behavioural deficits. In summary, we have demonstrated that intraneuronal Aβ is a valid risk factor in model systems and AD patients. This feature of AD pathology was successful in identifying novel low-molecular-mass oligomeric Aβ-specific antibodies for diagnosis and therapy. This article was published in Biochem Soc Trans and referenced in Journal of Addiction Research & Therapy

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