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Related Concept Videos

Liver Regeneration01:24

Liver Regeneration

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The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
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Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
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Liver Physiology01:30

Liver Physiology

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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...
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Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

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Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to...
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Liver Histology01:27

Liver Histology

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The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
Hepatocytes perform a variety of essential functions. They secrete...
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Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...
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Hepatocyte-specific Ablation in Zebrafish to Study Biliary-driven Liver Regeneration
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Liver regeneration.

Shennen A Mao1, Jaime M Glorioso1, Scott L Nyberg1

  • 1Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Rochester, Minn.

Translational Research : the Journal of Laboratory and Clinical Medicine
|February 6, 2014
PubMed
Summary
This summary is machine-generated.

Liver regeneration is a complex process with significant implications for treating liver failure and understanding cancer development. Further research is needed to fully understand liver regeneration mechanisms and applications.

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Area of Science:

  • Hepatology
  • Regenerative Medicine
  • Molecular Biology

Background:

  • The liver possesses a remarkable capacity for regeneration following injury.
  • Understanding liver regeneration is crucial for treating liver failure and addressing cancer in cirrhotic livers.

Purpose of the Study:

  • To review current models, molecular mechanisms, and progenitor cell roles in liver regeneration.
  • To highlight clinical applications and novel research areas in liver regeneration.

Main Methods:

  • Review of existing literature on liver regeneration models and molecular pathways.
  • Discussion of the role of liver progenitor cells in hepatic repair.
  • Exploration of clinical applications such as small-for-size liver transplantation.

Main Results:

  • Current knowledge of liver regeneration is based on various study models and understanding of molecular processes.
  • Liver progenitor cells play a key role in the regenerative process.
  • Clinical applications are emerging, alongside innovative research in xenogeneic models and decellularized matrices.

Conclusions:

  • Significant advancements have been made in understanding liver regeneration over 50 years.
  • Gaps in scientific understanding persist, necessitating continued research.
  • Further investigation into liver regeneration holds promise for future therapeutic strategies.