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Introduction: Sepsis is a major health problem with high mortality rate, despite advanced medications. Although hypothalamic-pituitary-adrenal (HPA) axis activation can control its destructive inflammatory reactions, adrenal insufficiency (AI) is commonly associated with it. Mesenchymal Stem Cell-Derived Microvesicles (MSCs-MVs) were proved to be as effective as their origin cells in tissue repair.Aim of the work: To study the effects of Escherichia coli-lipopolysaccharides (E. coli-LPS) induced sepsis on Zona fasciculata of adult male albino rats and probable therapeutic effects of adipose derived mesenchymal stem cells-microvesicles (ADMSCs-MVs).Materials and Methods: Forty-four adult male albino rats were divided into three groups; (I) the controls, (II) LPS and (III) MV. Sepsis was induced in LPS and MV-groups using E. coli-LPS. Four hours later, MV-group received single intravenous (IV) injection of PKH26 labelled ADMSCs-MVs. All animals were sacrificed 48 hours after ADMSCs-MVs administration. Tumor necrosis factor-α (TNF-α), cyclo-oxygenase-2 (COX-2) and nitric oxide (NO) levels were measured in adrenal homogenates of each group. Sections from all groups were subjected to HE mostly through transfer of proteins, mRNA, microRNA and/or organelles with reparative functions from ADMSCs to the injured tissues.

the egyptian journal of histology

Do microvesicles derived from adipose mesenchymal stem cells have a therapeutic potential on Escherichia coli lipopolysaccharides-induced sepsis in Zona fasciculata of adult male albino rats? A histological study