Preclinical Detection of Prions in Blood of Nonhuman Primates Infected with Variant Creutzfeldt-Jakob Disease

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Concha-Marambio, Luis ; Chacon, Marcelo A. ; Soto, Claudio
• Description:
  Variant Creutzfeldt-Jakob disease (vCJD) is caused by prion infection with bovine spongiform encephalopathy and can be transmitted by blood transfusion. Protein misfolding cyclic amplification (PMCA) can detect prions in blood from vCJD patients with 100% sensitivity and specificity. To determine whether PMCA enables prion detection in blood during the preclinical stage of infection, we performed a blind study using blood samples longitudinally collected from 28 control macaques and 3 macaques peripherally infected with vCJD. Our results demonstrate that PMCA consistently detected prions in blood during the entire preclinical stage in all infected macaques, without false positives from noninfected animals, when using the optimized conditions for amplification of macaque prions. Strikingly, prions were detected as early as 2 months postinoculation (>750 days before disease onset). These findings suggest that PMCA has the potential to detect vCJD prions in blood from asymptomatic carriers during the preclinical phase of the disease.
• Subjects:
  Blood Diagnosis Nonhuman Primates Preclinical Detection Of Prions In Blood Of Nonhuman Primates Infected With Variant Creutzfeldt-Jakob Disease Prions Protein Misfolding Cyclic Amplification Research Variant Creutzfeldt-Jakob Disease VCJD
• Source:
  Emerg Infect Dis. 26(1):34-43
• Pubmed ID:
  31855141
• Pubmed Central ID:
  PMC6924915
• Document Type:
  Journal Article
• Volume:
  26
• Issue:
  1
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:0a87fca8527832fe17421adc5f9af051ae69455459e87a5852c18ef702c6ef58
• Download URL:
  https://stacks.cdc.gov/view/cdc/83876/cdc_83876_DS1.pdf
• File Type:
  [PDF - 2.39 MB ]