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Advantages of adipose tissue stem cells over CD34+ mobilization to decrease hepatic fibrosis in Wistar rats.

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Area of Science:

  • Regenerative Medicine
  • Hepatology
  • Immunology

Background:

  • Chronic liver inflammation can lead to hepatic cirrhosis, impairing liver regeneration.
  • Current treatments like transplantation have limitations, highlighting the need for alternative therapies.
  • Stem cell therapy presents a potential alternative for managing liver fibrosis.

Purpose of the Study:

  • To investigate the efficacy of adipose tissue-derived mesenchymal stem cells (MSCs) and/or granulocyte colony-stimulating factor (G-CSF) in reducing liver fibrosis.
  • To evaluate the impact of these therapies on liver function markers and inflammatory cytokines.
  • To assess the potential of stimulating endogenous hematopoietic stem cells (HSCs) with G-CSF.

Main Methods:

  • A liver fibrosis model was established in Wistar rats using carbon tetrachloride.
  • Experimental groups received single or combined therapies of G-CSF-stimulated HSC mobilization and intravenous MSC administration.
  • Liver function tests, cytokine levels, and histopathology were analyzed to assess treatment outcomes.

Main Results:

  • MSC and G-CSF treatments significantly improved alanine amino transferase levels.
  • Aspartate amino transferase levels decreased across all treated groups (G-CSF, MSCs, G-CSF+MSCs).
  • MSC treatment increased hepatocyte growth factor (HGF) and interleukin-10, while decreasing transforming growth factor-β, interleukin-1β, and tumor necrosis factor-alpha. Histopathology revealed a reduction in liver fibrosis from F4 to F2 with MSCs and G-CSF.

Conclusions:

  • Mesenchymal stem cell (MSC) treatment enhances liver function and reduces hepatic fibrosis.
  • MSC therapy exhibits anti-inflammatory properties, promoting HGF and proliferating cell nuclear antigen.
  • Combined MSC and G-CSF therapy showed less evident fibrosis improvement compared to single treatments.