The Generative Brain

Institute of Neuropathology, Saarland University Medical Centre (Homburg)

University hospital neuropathology institute in Homburg (Saarland, Germany) that combines routine diagnostic neuropathology (brain tumours, muscle and nerve biopsies, CSF cytology, autopsies) with a protein aggregate line covering prions and alpha-synuclein. Its diagnostics page offers prion testing on native and paraffin material, including Western blot typing and the paraffin-embedded tissue (PET) blot, and asks clinicians to think of CJD in dementia cases. Its researchers publish on prion typing in sporadic CJD and fatal familial insomnia, on prion and alpha-synuclein seed decontamination with the Robert Koch Institute, and appear as co-authors on the German CSF RT-QuIC surveillance paper and the 2026 macaque CWD transmission study. No formal reference centre or brain bank role was found.

Key facts

  • The institute sits in building 90.3 of the Saarland University Medical Centre in Homburg and covers diagnosis and research of diseases of the brain, spinal cord, skeletal muscle and peripheral nerves, including frozen sections during surgery, CSF cytology and autopsy work; full specialist training in neuropathology is offered.
  • Its diagnostics page describes prion testing with a membrane adsorption assay on native tissue, Western blot typing and PET blot on decontaminated paraffin sections, says CJD should be considered in dementia, and asks clinicians to call before a biopsy or autopsy for prion testing.
  • The same page lists aggregate diagnostics for Alzheimer disease, Parkinson disease, dementia with Lewy bodies, multiple system atrophy and frontotemporal dementias, using PET blot and a microfiltration assay; it does not mention a brain bank or a reference role.
  • The UKS page names Walter J. Schulz-Schaeffer as director and says he and his team restructured the institute from September 2016, adding molecular pathology and enzyme histochemistry for muscle and nerve biopsies. The Science Media Center lists him with the same post and records a January 2017 expert statement on a confirmed CJD case report and a December 2018 statement on whether amyloid could be transmitted through medical devices.
  • A Homburg PET blot study of 40 sporadic CJD patients found prion aggregates in ganglia beyond the trigeminal ganglion only in patients with type 2 prions, and found them in all 17 trigeminal ganglia tested in type 2 cases; the work was funded by the Volkswagen Foundation (ZN 2168) and the Saarland medical faculty.
  • A Homburg study of brain tissue from six people with fatal familial insomnia found the protease resistant fragment matched sporadic CJD type 2 in size while deposition pattern and denaturation behaviour were closer to type 1; the authors argue fragment size alone is not enough to classify prion types.
  • Homburg neuropathology co-authored, with the RKI Prion and Prionoid Research Unit, the 2021 paper showing Parkinson disease alpha-synuclein seeds resist steam sterilisation more than prions, and the 2021 paper on transmissible alpha-synuclein seeding from Parkinson brain and stomach in transgenic mice.
  • The institute director is a co-author on the 2023 prospective German surveillance study of CSF RT-QuIC led by the National Reference Center in Goettingen (888 sporadic CJD and 371 non-prion patients, 2014 to 2022), which reported about 90 percent sensitivity and 99 percent specificity.
  • A 2025 study with Greifswald hygiene researchers tested whether repeated 6 M guanidine thiocyanate prion decontamination damages nickel-titanium root canal files; eight 15 minute soaks did not change torsion or bending properties, while a 12 hour soak weakened the smaller file size.
  • Saarland University Institute of Neuropathology is one of five author affiliations on the 2026 Science Advances paper on limited CWD transmission to cynomolgus macaques, with Calgary, UTHealth Houston, the German Primate Center and the RKI.
  • A Europe PMC affiliation search for Homburg neuropathology with prion, Creutzfeldt or synuclein terms returned 40 records; prion and alpha-synuclein seeding hits cluster from 2021 to 2026, with one older 2011 paper on cellular prion protein, while most other hits are tumour or general neurodegeneration papers.

Timeline

  1. 1988to 1990: neuropathology at Homburg built up by Marika Kiessling, per the UKS history note.
  2. 1992to 2011: institute led by Wolfgang Feiden.
  3. 2016restructuring under Walter J. Schulz-Schaeffer begins.
  4. 2020alpha-synuclein steam sterilisation paper with the RKI prion unit published online.
  5. 2021transmissible alpha-synuclein seeding paper with the RKI published online.
  6. 2021fatal familial insomnia prion typing paper published.
  7. 2021sporadic CJD peripheral ganglia PET blot paper published.
  8. 2023German CSF RT-QuIC surveillance paper with Goettingen and Hamburg published online.
  9. 2025guanidine thiocyanate decontamination and dental instrument paper published.
  10. 2026macaque CWD transmission paper published online with a Saarland affiliation.
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