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Cerebrospinal fluid studies in Kenyan children with severe falciparum malaria

Abstract:

The pathogenesis of the neurological complications of Plasmodium falciparum malaria is unclear. We measured proteins and amino acids in paired plasma and cerebrospinal fluid (CSF) samples in children with severe falciparum malaria, to assess the integrity of the blood brain barrier (BBB), and look for evidence of intrathecal synthesis of immunoglobulins, excitotoxins and brain damage.

Methods: Proteins of different molecular sizes and immunoglobulins were measured in paired CSF and plasma samples in children with falciparum malaria and either impaired consciousness, prostrate, or seizures.

Results: The ratio of CSF to plasma albumin (Qalb) exceeded the reference values in 42 (51%) children. The CSF concentrations of the excitotoxic amino acid aspartate and many non-polar amino acids, except alanine, were above the reference value, despite normal plasma concentrations. IgM concentrations were elevated in 21 (46%) and the IgM index was raised in 22 (52%). Identical IgG oligoclonal bands were found in 9 (35%), but only one patient had an increase in the CSF IgG without a concomitant increase in plasma indicating intrathecal synthesis of IgG.

Conclusions: This study indicates that the BBB is mildly impaired in some children with severe falciparum malaria, and this impairment is not confined to cerebral malaria, but also occurs in children with prostrate malaria and to a lesser extent the children with malaria and seizures. There is evidence of intrathecal synthesis of immunoglobulins in children with malaria, but this requires further investigation. This finding, together with raised level of excitotoxic amino acid aspartate could contribute to the pathogenesis of neurological complications in malaria.

Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.2174/1874315300801010056

Authors


More by this author
Institution:
University of Oxford
Division:
MSD
Department:
NDM
Sub department:
Tropical Medicine
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Biochemistry
Role:
Author


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Funder identifier:
https://ror.org/029chgv08
Grant:
070114/Z/02/Z
G9818340B


Publisher:
Bentham Open
Journal:
Open Journal of Tropical Medicine More from this journal
Volume:
1
Pages:
56-62
Publication date:
2008-09-05
Acceptance date:
2008-07-21
DOI:
ISSN:
1874-3153


Language:
English
Pubs id:
pubs:120582
UUID:
uuid:86c0151d-f088-405d-b574-4d84669d99ae
Local pid:
pubs:120582
Source identifiers:
120582
Deposit date:
2012-12-19

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