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Related Concept Videos

Hyperglycemia01:29

Hyperglycemia

Hyperglycemia is an abnormally high blood glucose level. It is diagnosed by fasting glucose ≥126 mg/dL, 2-hour oral glucose tolerance test (or OGTT) ≥200 mg/dL, random glucose ≥200 mg/dL with symptoms, or HbA1c ≥6.5%. However, HbA1c results may be unreliable in certain conditions, such as anemia or hemoglobinopathies, and the diagnosis should be confirmed unless classic symptoms are present. Postprandial hyperglycemia is typically considered significant when glucose levels exceed 180 mg/dL two...

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High-Fat-Diet-Induced Hyperglycemia Alters Liver Extracellular Matrix Composition in Mice Model.

Roza Izgilov1, Nahum Kavin1, Omri Ofek1

  • 1Department of Cell and Developmental Biology, Gray Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.

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|June 25, 2026
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Summary

A high-fat diet induced obesity and fatty liver in mice, altering liver extracellular matrix (ECM) structure through advanced glycation end-products (AGEs). These ECM changes offer insights into metabolic diseases and regenerative therapy development.

Keywords:
AGEsECM remodelingextracellular matrixhigh-fat dietinsulin resistanceliver tissue

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Area of Science:

  • Regenerative Medicine
  • Metabolic Diseases
  • Biomaterials

Background:

  • High-fat diets (HFD) induce obesity, fatty liver, and metabolic dysfunction.
  • Hyperglycemia associated with HFD promotes advanced glycation end-products (AGEs).
  • AGEs cause protein post-translational modifications (PTMs) and extracellular matrix (ECM) crosslinking, impacting organ function.

Purpose of the Study:

  • To investigate liver alterations in mice fed a high-fat diet.
  • To analyze changes in metabolic homeostasis, glucose levels, and ECM structure.
  • To explore the role of AGEs and ECM modifications in metabolic liver disease.

Main Methods:

  • Histological and gene expression analyses to assess adiposity and ECM deposition.
  • Liver decellularization to isolate ECM scaffolds.
  • Advanced imaging techniques (SEM, cathodoluminescence) and spectroscopy to analyze protein modifications and ECM structure.

Main Results:

  • Increased adiposity and ECM protein deposition in the liver of HFD-fed mice.
  • Evidence of AGE accumulation and protein crosslinking within the liver ECM.
  • Visualization of thickened ECM fibers and confirmed protein modifications using imaging methods.

Conclusions:

  • High-fat diet-induced metabolic changes lead to significant structural alterations in the liver ECM.
  • AGEs play a crucial role in ECM modification, contributing to liver adiposity and impaired glucose regulation.
  • Understanding these ECM changes is vital for developing effective regenerative therapies for metabolic liver diseases.