Quantification of Plasmodium falciparum histidine-rich protein-2 in cerebrospinal spinal fluid from cerebral malaria patients.

Published

Journal Article

A cerebrospinal fluid (CSF) biomarker for cerebral malaria (CM) has not been validated. We examined the detection, semiquantification, and clinical use of the Plasmodium falciparum histidine-rich protein-2 (PfHRP-2) as a parasite antigen biomarker for CM. The PfHRP-2 was detected in archival CSF samples from CM patients from Tanzania both by a newly developed sensitive and specific immuno-polymerase chain reaction (72 of 73) and by rapid diagnostic tests (62 of 73). The geometric mean PfHRP-2 CSF concentration was 8.76 ng/mL with no differences in those who survived (9.2 ng/mL), those who died (11.1 ng/mL), and those with neurologic sequelae (10.8 ng/mL). All aparasitemic endemic and nonendemic control samples had undetectable CSF PfHRP-2. In a separate group of 11 matched plasma and CSF cerebral malaria patient samples, the ratio of plasma to CSF PfHRP-2 was 175. The CSF PfHRP-2 reflects elevated plasma PfHRP-2 rather than elevated CM-specific CSF ratios, falling short of a validated biomarker.

Full Text

Duke Authors

Cited Authors

  • Mikita, K; Thakur, K; Anstey, NM; Piera, KA; Pardo, CA; Weinberg, JB; Mukemba, J; Florence, S; Mwaikambo, ED; Granger, DL; Sullivan, DJ

Published Date

  • September 2014

Published In

Volume / Issue

  • 91 / 3

Start / End Page

  • 486 - 492

PubMed ID

  • 24980497

Pubmed Central ID

  • 24980497

Electronic International Standard Serial Number (EISSN)

  • 1476-1645

Digital Object Identifier (DOI)

  • 10.4269/ajtmh.14-0210

Language

  • eng

Conference Location

  • United States