@article {193038, title = {The Effect of Mesenchymal Stem Cells Derived Microvesicles on the Treatment of Experimental CCL4 Induced Liver Fibrosis in Rats.}, journal = {International journal of stem cells}, volume = {12}, year = {2019}, pages = {400-409}, abstract = {

Background and Objectives: The release of microvesicles (MVs) from mesenchymal stem cells (MSCs) has been implicated in intercellular communication, and may contribute to beneficial paracrine effects of stem cell-based therapies. We investigated the effect of administration of MSC-MVs on the therapeutic potential of carbon tetrachloride (CCL) induced liver fibrosis in rats.

Methods: Our work included: isolation and further identification of bone marrow MSC-MVs by transmission electron microscopy (TEM). Liver fibrosis was induced in rats by CCl4 followed by injection of prepared MSC-MVs in injured rats. The effects of MSC-MVs were evaluated by biochemical analysis of liver functions, RNA gene expression quantitation for collagen-1, transforming growth factor (TGF-), interleukin-1 (IL-1), vascular endothelial growth factor (VEGF) by real time reverse transcription PCR (RT-PCR) techniques. Finally histopathological examination of the liver tissues was assessed for all studied groups.

Results: BM-MSC-MVs treated group showed significant increase in serum albumin levels, VEGF quantitative gene expression (p\<0.05), while it showed a significant decrease in serum alanine transaminase (ALT) enzyme levels, quantitative gene expression of TGF-, collagen-1, IL-1 compared to CCL fibrotic group (p\<0.05). Additionally, the histopathological assessment of the liver tissues of BM-MSC-MVs treated group showed marked decrease in the collagen deposition \& improvement of histopathological picture in comparison with CCL fibrotic group.

Conclusions: Our study demonstrates that BM-MSC-MVs possess anti-fibrotic, anti-inflammatory, and pro-angiogenic properties which can promote the resolution of CCL induced liver fibrosis in rats.

}, author = {Dina Sabry and Abbas Mohamed and Monir, Manar and Heba A. Ibrahim} }