Peer-reviewed veterinary case report
Quantitative proteomics of cerebrospinal fluid using tandem mass tags in dogs with recurrent epileptic seizures.
- Journal:
- Journal of proteomics
- Year:
- 2021
- Authors:
- Baka, Rania et al.
- Affiliation:
- Faculty of Veterinary Medicine
- Species:
- dog
Plain-English summary
This study looked at four groups of dogs to understand the differences in proteins found in their cerebrospinal fluid, which is the fluid surrounding the brain and spinal cord. The groups included healthy dogs, dogs with idiopathic epilepsy (a type of epilepsy with no known cause) that were on medication, dogs with the same condition not on medication, and dogs with structural epilepsy (where there is a physical cause for the seizures). Researchers found that certain proteins were either increased or decreased in the dogs with epilepsy compared to healthy dogs, suggesting that these proteins might be involved in how seizures affect the brain. The findings indicate that the changes in these proteins could be linked to inflammation and protective responses in the brain during seizures, and that medication might change how these proteins behave. Overall, the study suggests that the protein changes in the cerebrospinal fluid could help us understand epilepsy better, but it does not provide a direct treatment outcome.
Abstract
This prospective study included four dog groups (group A: healthy dogs, groups B: dogs with idiopathic epilepsy under antiepileptic medication (AEM), C: idiopathic epilepsy dogs without AEM administration, D: dogs with structural epilepsy). The purpose of the study was to compare the proteomic profile among the four groups. Samples were analyzed by a quantitative Tandem Mass Tags approach using a Q-Exactive-Plus mass-spectrometer. Identification and relative quantification were performed using Proteome Discoverer, and data were analyzed using R. Gene ontology terms were analyzed based on Canis lupus familiaris database. Data are available via ProteomeXchange with identifier PXD018893. Eighteen proteins were statistically significant among the four groups (P < 0.05). MMP2 and EFEMP2 appeared down-regulated whereas HP and APO-A1 were up-regulated (groups B, D). CLEC3B and PEBP4 were up-regulated whereas APO-A1 was down-regulated (group C). IGLL1 was down-regulated (groups B, C) and up-regulated (group D). EFEMP2 was the only protein detected among the four groups and PEBP4 was significantly different among the epileptic dogs. Western blot and SPARCL immunoassay were used to quantify HP abundance change, validating proteomic analysis. Both, showed good correlation with HP levels identified through proteomic analysis (r = 0.712 and r = 0.703, respectively). SIGNIFICANCE: The proteomic analysis from CSF of dogs with epileptic seizures could reflect that MMP2, HP and APO-A1 may contribute to a blood-brain barrier disruption through the seizure-induced inflammatory process in the brain. MMP2 change may indicate the activation of protective mechanisms within the brain tissue. Antiepileptic medication could influence several cellular responses and alter the CSF proteome composition.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/33011347/