Related Experiment Video
Updated: Jul 3, 2026
11:32
Evaluating Cell Death Signaling by Immunofluorescence in a Rat Model of Ischemic Stroke
Published on: January 3, 2025
NF-kappaB signaling in cerebral ischemia
1Pharmacological Institute, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany.
Neuroscience
|August 5, 2008
Summary
Nuclear factor-kappa B (NF-kappaB) plays a dual role in cerebral ischemia, promoting cell death in severe cases but offering protection in milder conditions. Targeting NF-kappaB signaling offers therapeutic potential for brain injury.
Area of Science:
- Neuroscience
- Molecular Biology
- Immunology
Background:
- Nuclear factor-kappa B (NF-kappaB) is a critical transcription factor regulating genes involved in cell survival and inflammation.
- NF-kappaB activation is consistently observed in neurons during cerebral ischemia.
Purpose of the Study:
- To elucidate the complex role of NF-kappaB in cerebral ischemia.
- To identify the specific NF-kappaB subunits and signaling pathways involved in ischemic brain injury.
- To explore the therapeutic potential of modulating NF-kappaB signaling.
Main Methods:
- Review of existing evidence on NF-kappaB activation and function in cerebral ischemia.
- Analysis of NF-kappaB subunit involvement (RelA and p50).
- Identification of upstream activators (IKK, hypoxia, ROS, inflammatory mediators).
Main Results:
- NF-kappaB contributes to neuronal cell death in severe cerebral ischemia.
- NF-kappaB may mediate the protective preconditioning effect in transient, sublethal ischemia.
- RelA and p50 subunits are primarily responsible for detrimental effects in ischemia.
- NF-kappaB signaling is activated by hypoxia, ROS, and inflammatory mediators via IKK.
Conclusions:
- NF-kappaB exhibits context-dependent roles in cerebral ischemia, acting as both a detrimental and protective factor.
- Targeting the NF-kappaB pathway offers a promising strategy for interrupting inflammatory and apoptotic cascades in brain injury.
- Modulating NF-kappaB signaling presents a unified therapeutic approach for complex ischemic conditions.
Related Concept Videos
01:15Ischemic Stroke ll: Pathophysiology
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
01:15Ischemic Stroke l: Introduction
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
01:26Transient Ischemic Attack l: Introduction
A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
01:29Hemorrhagic Stroke ll: Pathophysiology
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
02:26NF-kB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
02:26NF-κB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...