Transmission of CJD from nasal brushings but not spinal fluid or RT-QuIC product.

ABSTRACT:

Objective

The detection of prion seeding activity in CSF and olfactory mucosal brushings using real-time quaking-induced conversion assays allows highly accurate clinical diagnosis of sporadic Creutzfeldt-Jakob disease. To gauge transmission risks associated with these biospecimens and their testing, we have bioassayed prion infectivity levels in patients' brain tissue, nasal brushings, and CSF, and assessed the pathogenicity of amplified products of real-time quaking-induced conversion assays seeded with Creutzfeldt-Jakob disease prions.

Methods

We obtained olfactory mucosal brushings and CSF from patients with a final diagnosis of sporadic Creutzfeldt-Jakob disease subtype MM1 (n = 3). Samples were inoculated intracerebrally into Tg66 transgenic mice that overexpress the h

SUBMITTER: Raymond GJ 

PROVIDER: S-EPMC7318090 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature