AI Article Synopsis

  • The study explores the potential of mesenchymal stem cell (MSC) and hepatocyte-derived exosomes combined with imipenem to combat inflammation in a mouse model of sepsis.
  • Using the Cecal Ligation and Puncture (CLP) method to induce sepsis, the research assessed various treatments and their effects on blood and liver parameters, as well as T lymphocyte populations.
  • Findings suggest that the combination of both types of exosomes with imipenem effectively reduces inflammation, supports T cell populations, minimizes liver damage, and enhances survival rates, highlighting a new strategy for sepsis treatment.

Article Abstract

Unlabelled: Aim Sepsis is a medical emergency with no definitive treatment. Animal experiments have confirmed the therapeutic characteristics of exosomes in reducing inflammation and tissue damage. The study investigates the effect of MSC and hepatocyte-derived exosomes along with imipenem in controlling systemic and local (liver) inflammation in a mouse model of sepsis.

Main Methods: To induce sepsis in C57BL/6 mice, the Cecal Ligation and Puncture (CLP) model was used. The mice were given various treatments, including imipenem, MSC-derived exosomes, hepatocyte-derived exosomes, and a mixture of exosomes. Blood and liver samples were collected and analyzed for cell blood count, liver enzymes, NO levels, cytokine concentrations, and bacterial presence. The percentages of TCD3 + CD4+/CD8+ and Treg in the spleen and mesenteric lymph nodes were also assessed using flow cytometry. The pathological changes were assessed in the liver, lung, and heart tissues. In addition, the cytokine content of exosomes was measured by ELISA.

Key Findings: Our results demonstrated that MSC-derived exosomes+imipenem could control systemic and local inflammation and increase the TCD4+ and Treg populations. Hepatocyte-derived exosomes+imipenem reduced inflammation in the liver and increased the TCD8+ and Treg populations. The mixture of exosomes+imipenem had the best function in reducing inflammation, maintaining all T lymphocyte populations, reducing liver damage, and ultimately increasing the survival rate.

Significance: The mixture of exosomes derived from MSCs and hepatocytes, along with imipenem, in the inflammatory phase of sepsis could be a promising therapeutic strategy in sepsis treatment.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.lfs.2023.121813DOI Listing

Publication Analysis

Top Keywords

hepatocyte-derived exosomes
12
exosomes
8
exosomes imipenem
8
liver damage
8
mouse model
8
reducing inflammation
8
systemic local
8
mixture exosomes
8
treg populations
8
liver
7

Similar Publications

Human liver progenitor-like cells-derived extracellular vesicles promote liver regeneration during acute liver failure.

Cell Biol Toxicol

November 2024

Department of Anesthesiology / Department of Hepatic Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200217, China.

Article Synopsis
  • - Hepatocyte-derived liver progenitor-like cells (HepLPCs) help improve liver recovery in animals with acute liver failure by detoxifying ammonia, enhancing liver regeneration, and reducing inflammation.
  • - Research on HepLPC-derived extracellular vesicles (HepLPC-EVs) revealed that these vesicles promote liver regeneration in mice and stimulate primary human hepatocyte growth through the microRNA miR-183-5p.
  • - The mechanism involves miR-183-5p downregulating the FoxO1 gene, which activates key signaling pathways (Akt/GSK3β/β-catenin) that facilitate liver restoration during acute liver failure.
View Article and Find Full Text PDF

The role of hepatocyte-derived extracellular vesicles in liver and extrahepatic diseases.

Biomed Pharmacother

November 2024

Department of Laboratory Medicine, Wujin Hospital Affiliated with Jiangsu University, Changzhou 213017, China; Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Hospital Affiliated with Jiangsu University (Wujin Clinical College of Xuzhou Medical University), Changzhou 213017,  China; Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou 213017, China. Electronic address:

Extracellular vesicles (EVs) are vesicle-like bodies with a double membrane structure that are released from the cell membrane or secreted by cells into the extracellular environment. These include exosomes, microvesicles, and apoptotic bodies. There is growing evidence indicating that the composition of liver cell contents changes following injury.

View Article and Find Full Text PDF

Hepatocyte-derived exosomes deliver the lncRNA CYTOR to hepatic stellate cells and promote liver fibrosis.

J Cell Mol Med

April 2024

Department of Gastroenterology, Shidong Hospital of Shanghai, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China.

Liver fibrosis is characterized by the activation and transformation of hepatic stellate cells (HSCs) induced by various injury factors. The degree of liver fibrosis can be significantly improved, but persistent injury factors present a significant therapeutic challenge. Hepatocytes are the most important parenchymal cell type in the liver.

View Article and Find Full Text PDF

Recently, Salidroside (Sal) has been demonstrated to suppress hepatic stellate cell (HSC) activation, a crucial event for liver fibrosis. Moreover, Sal has been reported to decrease hepatocyte injury. A growing number of reports have indicated that the crosstalk between hepatocytes and HSCs is very crucial for liver fibrosis development.

View Article and Find Full Text PDF
Article Synopsis
  • The study explores the potential of mesenchymal stem cell (MSC) and hepatocyte-derived exosomes combined with imipenem to combat inflammation in a mouse model of sepsis.
  • Using the Cecal Ligation and Puncture (CLP) method to induce sepsis, the research assessed various treatments and their effects on blood and liver parameters, as well as T lymphocyte populations.
  • Findings suggest that the combination of both types of exosomes with imipenem effectively reduces inflammation, supports T cell populations, minimizes liver damage, and enhances survival rates, highlighting a new strategy for sepsis treatment.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!