ABSTRACT
OBJECTIVE@#To study the expression of ubiquitin proteasome system (UPS) in the traumatic epilepsy pathogenesis and its value in traumatic epilepsy by quantitative analysis.@*METHODS@#Fifteen specimens from human epileptic temporal cortex from PTE were collected as the PTE group. Fifteen specimens from non-PTE were collected as the non-PTE group. Fifteen normal cerebral cortex specimens died from acute traffic accident were collected as the control group. The expression of mRNA and protein of Ub and UbE1 were detected by RT-PCR and Western blot. Statistical analysis was used to compare the data between three groups.@*RESULTS@#The expression of mRNA and protein of Ub and UbE1 were the following order: PTE group(high), non-PTE group(middle) and control group(low).@*CONCLUSION@#The study confirms that UPS is up-regulated in the epilepsy's focus, especially in traumatic epilepsy. The activation of UPS may be an important pathological change in neurons in pathogenesis of traumatic epilepsy.
Subject(s)
Humans , Blotting, Western , Cerebral Cortex/pathology , Craniocerebral Trauma/pathology , DNA Primers , Epilepsy, Post-Traumatic/pathology , Forensic Pathology , Neurons/pathology , RNA, Messenger/metabolism , Reverse Transcriptase Polymerase Chain Reaction , Ubiquitin/metabolism , Ubiquitin-Activating Enzymes/metabolism , Up-RegulationABSTRACT
OBJECTIVE@#To investigate the value of ubiquitin(Ub) and ubiquitin-activating enzymel(UbE1) for the appraisement of post traumatic epilepsy (PTE).@*METHODS@#Fifteen specimens from human epileptic temporal cortex originating from PTE were collected as the PTE group. Fifteen specimens from non-PTE were collected as the non-PTE group. Meanwhile, 15 normal cerebral cortex specimens from people dead from acute traffic accident were collected as the control groups. Observe morphology changes of each group with HE, then with immunohistochemistry of Ub and UbE1.@*RESULTS@#Compared to the control group, morphology changes of neuron quantity reduction, neuron denaturation and so on were observed both in the PTE group and the non-PTE group under HE, especially in the PTE group. Ub and UbE1 mainly expressed in the nucleus and cytoplasm of the neurons in epilepsy spot without extracellular expression. The expression of Ub and UbE1 is PTE group > non-PTE group > control group (P < 0.05).@*CONCLUSIONS@#The neuron denaturation are one of the main pathology changes of epilepsy, and it is more obvious in the PTE group. Immunohistochemistry of Ub and UbE1 may be more helpful to distinguish PTE and non-PTE than HE staining.