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Use of a Hanging-weight System for Liver Ischemia in Mice
Published on: August 7, 2012
Role of p38 and JNK in liver ischemia and reperfusion
LaShonda A King1, Alexander H Toledo, Fernando A Rivera-Chavez
1Department of Research, Kalamazoo Center for Medical Studies, Michigan State University, 1000 Oakland Drive, Kalamazoo, MI 49008, USA.
Background/Purpose:
The signal transduction of mitogen-activated protein kinases (MAPKs) has appeared to be an important mediator of ischemic-related events. Because of this, we analyzed the participation of p38 and JNK in liver ischemia and reperfusion, as two individual members of the MAPK family of proteins.
Methods:
All papers referred to in PubMed for the past 15 years were analyzed to determine how and when these MAPKs were considered to be an intricate part of the ischemic event. References were cross-studied to ascertain whether other papers could be found in the literature.
Results:
The role of p38 and JNK in liver ischemia was confirmed in the literature. The activation of these mediators was associated with the induction of apoptosis and necrosis. Inhibitors of p38 and JNK reduced the liver ischemia and reperfusion damage, probably through the mechanisms mentioned before.
Conclusions:
The development of effective inhibitors of p38 and JNK protein mediators is important for minimizing the harmful effects associated with liver ischemia and reperfusion.
Insights
Mitogen-activated protein kinases (MAPKs), specifically p38 and JNK, play a key role in liver ischemia and reperfusion injury. Inhibiting these MAPKs may reduce damage, highlighting their therapeutic potential.
Area of Science:
- Molecular Biology
- Cell Signaling
- Hepatology
Background:
- Mitogen-activated protein kinases (MAPKs) are crucial signaling pathways involved in cellular responses to stress.
- Ischemia and reperfusion (I/R) injury in the liver triggers complex signaling cascades, including MAPK activation.
Purpose of the Study:
- To investigate the specific roles of p38 and c-Jun N-terminal kinase (JNK) within the MAPK family in liver I/R injury.
- To review and synthesize existing literature on MAPK involvement in hepatic I/R events.
Main Methods:
- A comprehensive literature review of PubMed-published studies over the past 15 years.
- Cross-referencing of identified papers to ensure thoroughness and identify related research.
Main Results:
- Evidence confirms the involvement of p38 and JNK in liver ischemia.
- Activation of p38 and JNK pathways is linked to apoptosis and necrosis in liver cells during I/R.
- Pharmacological inhibition of p38 and JNK demonstrably reduced liver I/R damage.
Conclusions:
- p38 and JNK are significant mediators of liver I/R injury.
- Targeting p38 and JNK with inhibitors presents a promising therapeutic strategy to mitigate liver damage from I/R events.
