Related Experiment Video

Updated: Jan 19, 2026

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents
07:58

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents

Published on: September 15, 2011

9.7K

Regression of Epileptogenesis by Inhibiting Tropomyosin Kinase B Signaling following a Seizure

Kamesh Krishnamurthy1, Yang Zhong Huang1, Stephen C Harward2

  • 1Department of Neurobiology, Duke University, Durham, NC.

Annals of Neurology
|September 17, 2019
PubMed
Abstract

Insights

Transiently inhibiting tropomyosin kinase B (TrkB)-phospholipase-C-gamma-1 (PLCγ1) signaling after a seizure can limit epilepsy progression. This approach may offer a new strategy for treating temporal lobe epilepsy (TLE).

Area of Science:

  • Neuroscience
  • Epilepsy Research
  • Molecular Signaling

Background:

  • Temporal lobe epilepsy (TLE) is a neurological disorder characterized by recurrent seizures.
  • Approximately 35% of TLE patients experience persistent seizures despite medication.
  • Seizures themselves may contribute to epilepsy progression, a process known as epileptogenesis.

Purpose of the Study:

  • To investigate the role of tropomyosin kinase B (TrkB)-phospholipase-C-gamma-1 (PLCγ1) signaling in seizure-induced epileptogenesis.
  • To determine if inhibiting TrkB-PLCγ1 signaling after a seizure can prevent or reverse epilepsy progression.

Main Methods:

  • A modified kindling model was used, inducing an isolated seizure via amygdala stimulation.
  • TrkB-PLCγ1 signaling was transiently inhibited for two days post-seizure using chemical-genetic or pharmacologic methods.
  • Seizure severity and duration were assessed using behavioral and electrographic measures.

Main Results:

  • Transient inhibition of TrkB-PLCγ1 signaling post-seizure reduced the severity and duration of subsequent seizures.
  • This inhibition also appeared to revert some animals to an earlier stage of epileptogenesis.
  • Inhibition of TrkB-PLCγ1 signaling without a recent seizure did not affect seizure severity.

Conclusions:

  • Transient inhibition of TrkB-PLCγ1 signaling following a seizure represents a potential therapeutic strategy for TLE.
  • This approach may limit epilepsy progression and ameliorate seizure severity.
  • Targeting TrkB-PLCγ1 signaling offers a novel avenue for TLE treatment.

More Related Videos

Regression Toward the Mean01:52

Regression Toward the Mean

6.9K
Identifying Kinase Inhibitors that Modulate the Thymocyte Response to Strong TCR Signals06:42

Identifying Kinase Inhibitors that Modulate the Thymocyte Response to Strong TCR Signals

499

Related Concept Videos

Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.9K
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
15.0K
Identifying Kinase Inhibitors that Modulate the Thymocyte Response to Strong TCR Signals06:42

Identifying Kinase Inhibitors that Modulate the Thymocyte Response to Strong TCR Signals

In this video, we describe a method to identify the small-molecule kinase inhibitors that modulate the apoptosis of self-reactive CD4+CD8+ double-positive immature thymocytes. Apoptosis is induced in the double-positive thymocytes by activating them with anti-CD3- and anti-CD28-coated magnetic beads; this is followed by a small-molecule inhibitor treatment and flow cytometry analysis to detect if the inhibitors modulate the apoptotic marker...
499
Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents07:58

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents

Partially isolated cortex (“undercut”) is an efficient animal model of posttraumatic epileptogenesis. Here we demonstrate how to make a novel surgical device and use it to make more precise and consistent lesions to generate this model.
9.7K
An Assay to Screen Bioactive Nanoparticles for Toll-Like Receptor Signaling Inhibition03:53

An Assay to Screen Bioactive Nanoparticles for Toll-Like Receptor Signaling Inhibition

This video demonstrates a reporter cell-based assay for screening potential bioactive nanoparticles that inhibit Toll-like receptor (TLR) signaling. The assay involves introducing lipopolysaccharides (LPS) mixed with peptide-gold nanoparticle hybrids to reporter macrophages expressing the reporter proteins — secreted embryonic alkaline phosphatase (SEAP) and luciferase. The reduction of LPS-induced TLR signal mediated by the hybrids is determined by measuring the reporter...
516
Multiple Regression01:25

Multiple Regression

Multiple regression assesses a linear relationship between one response or dependent variable and two or more independent variables. It has many practical applications.
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
3.8K