Preliminary analysis of cerebrospinal fluid proteome in patients with neurocysticercosis.
BACKGROUND
Neurocysticercosis is the infection of the nervous system by the larvae of Taenia solium (T. solium). Despite continuous effort, the experimental diagnosis of neurocysticercosis remains unresolved. Since the cerebrospinal fluid (CSF) contacts with the brain, dynamic information about pathological processes of the brain is likely to be reflected in CSF. Therefore, CSF may serve as a rich source of putative biomarkers related to neurocysticercosis. Comparative proteomic analysis of CSF of neurocysticercosis patients and control subjects may find differentially expressed proteins.


METHODS
Two-dimensional difference in gel electrophoresis (2D-DIGE) was used to investigate differentially expressed proteins in CSF of patients with neurocysticercosis by comparing the protein profile of CSF from neurocysticercosis patients with that from control subjects. The differentially expressed spots/proteins were recognized with matrix-assisted laser desorption/ionization-time of flight-time of flight (MALDI-TOF-TOF) mass spectrometry.


RESULTS
Forty-four enzyme digested peptides were obtained from 4 neurocysticercotic patients. Twenty-three were identified through search of the NCBI protein database with Mascot software, showing 19 up-expressed and 4 down-expressed. Of these proteins, 26S proteosome related to ATP- and ubiquitin-dependent degradation of proteins and lipocalin type prostaglandin D synthase involved in PGD2-synthesis and extracellular transporter activities were up-expressed, while transferrin related to iron metabolism within the brain was down-expressed.


CONCLUSIONS
This study established the proteomic profile of pooled CSF from 4 patients with neurocysticercosis, suggesting the potential value of proteomic analysis for the study of candidate biomarkers involved in the diagnosis or pathogenesis of neurocysticercosis.
Tian
Xiao-jun
XJ
Beijing Tropical Medicine Research Institute, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
Li
Jing-yi
JY
Huang
Yong
Y
Xue
Yan-ping
YP
D002555:Cerebrospinal Fluid / Q000378:metabolism*; D015180:Electrophoresis, Gel, Two-Dimensional; D005260:Female; D015972:Gene Expression Regulation, Neoplastic / Q000502:physiology; D006801:Humans; D008297:Male; D020019:Neurocysticercosis / Q000378:metabolism*; D020543:Proteome / Q000032:analysis*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
D020543:Proteome