Related Experiment Video
Updated: Jun 8, 2026
08:14
Developing a Clinically Relevant Hemorrhagic Shock Model in Rats
Published on: March 22, 2024
Liver metabolomic changes identify biochemical pathways in hemorrhagic shock
Drew M Scribner1, Nancy E Witowski, Kristine E Mulier
1Department of Surgery, University of Minnesota, Minneapolis, MN 55455, USA.
The Journal of Surgical Research
|September 22, 2010
Summary
Hemorrhagic shock alters liver metabolism, causing significant changes in key metabolites like GPC, GPE, UDP-glucose, and PEP. Nuclear Magnetic Resonance (NMR) spectroscopy effectively detects these metabolic shifts in vivo.
Area of Science:
- Biochemistry
- Physiology
- Medical Diagnostics
Background:
- Hemorrhagic shock induces critical physiological and metabolic changes, including a shift to anaerobic metabolism.
- The liver plays a central role in metabolic regulation during shock, managing glucose production and lactate processing.
- Understanding liver metabolic alterations is crucial for improving patient outcomes in hemorrhagic shock.
Purpose of the Study:
- To investigate the metabolic changes in liver tissue during an in vivo model of hemorrhagic shock and resuscitation.
- To evaluate the utility of proton ((1)H) and phosphorous ((31)P) Nuclear Magnetic Resonance (NMR) spectroscopy in detecting these metabolic alterations.
Main Methods:
- An established in vivo porcine model of hemorrhagic shock was employed.
- Animals underwent a defined period of shock followed by staged hypotensive and normotensive resuscitation.
- Liver metabolites were analyzed using (1)H and (31)P NMR spectroscopy.
Main Results:
- Significant reductions in glycerylphosphorylcholine (GPC) and glycerylphosphorylethanolamine (GPE) were observed at 8 hours post-shock.
- Elevations in uridine diphosphate-glucose (UDP-glucose) and phosphoenolpyruvate (PEP) were noted 23 hours after the shock period.
- Metabolite levels showed a trend towards recovery by 48 hours post-shock.
Conclusions:
- Proton ((1)H) and phosphorous ((31)P) NMR spectroscopy are effective tools for identifying metabolic differences in the liver during hemorrhagic shock.
- Metabolomic analysis using NMR can elucidate complex biochemical events occurring during hemorrhagic shock.
- These findings contribute to a deeper understanding of liver's role in shock pathophysiology.
Related Concept Videos
01:22Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test
In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
01:26Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow
Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug binding...
01:30Liver Physiology
The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can also...
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can also...
01:29Hepatic Encephalopathy
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...