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Published on: July 20, 2019
Octreotide Counteracts IFN-γ-Induced Endothelial Inflammation
Saikat Fakir1, Madan Sigdel1, Md Matiur Rahman Sarker1
1School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana, USA.
Octreotide (OCT) protects endothelial cells from inflammatory damage caused by interferon-gamma (IFN-γ). This study shows OCT reduces hyperpermeability and oxidative stress, supporting its role in vascular health.
Area of Science:
- Vascular Biology
- Immunology
- Pharmacology
Background:
- Endothelial cells are crucial for vascular homeostasis, regulating permeability and coagulation.
- Interferon-gamma (IFN-γ) disrupts endothelial barrier function, contributing to inflammatory conditions.
- Octreotide (OCT), a somatostatin analog, is known for its effects on hormone secretion and tumor growth.
Purpose of the Study:
- To investigate the anti-inflammatory and cytoprotective effects of Octreotide (OCT) on interferon-gamma (IFN-γ)-induced endothelial injury.
- To explore OCT's impact on key signaling pathways involved in endothelial dysfunction.
Main Methods:
- Endothelial cells were subjected to IFN-γ stimulation to induce injury.
- The effects of OCT treatment on cellular signaling pathways (cofilin, MLC2, JAK2, STAT1, STAT3, P38) were assessed.
- Endothelial hyperpermeability and reactive oxygen species (ROS) generation were measured.
Main Results:
- OCT significantly suppressed the activation of cofilin, MLC2, JAK2, STAT1, STAT3, and P38 induced by IFN-γ.
- OCT treatment reduced IFN-γ-induced endothelial hyperpermeability.
- OCT diminished reactive oxygen species (ROS) generation in response to IFN-γ.
Conclusions:
- Octreotide exhibits anti-inflammatory and cytoprotective properties against IFN-γ-induced endothelial injury.
- OCT mitigates endothelial barrier dysfunction by inhibiting key inflammatory signaling pathways and reducing oxidative stress.
- These findings support the potential therapeutic role of somatostatin analogs in endothelium-dependent disorders like lung injury and sepsis.
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