10 April 2019 : Animal Research
Mesenchymal Stem Cells Alleviate Acute Lung Injury and Inflammatory Responses Induced by Paraquat PoisoningLichun Zhang1ABCDEF, Qiuhe Li1BCDE, Wei Liu1BCDE, Zhenning Liu1BCDF, Haitao Shen2BCDF, Min Zhao1ADFG*
Med Sci Monit 2019; 25:2623-2632
BACKGROUND: Mesenchymal stem cells (MSCs) show anti-oxidative and anti-inflammatory effects that have prompted further research into their potential applications in treating paraquat (PQ) poisoning cases in emergency rooms. We assessed the protective effects, underlying mechanisms, and secondary inflammatory responses of MSCs on PQ-induced acute lung injury.
MATERIAL AND METHODS: Sprague-Dawley rats were injected intraperitoneally with PQ (20 µg per gram of body weight). MSCs were injected through the caudal vein 1 h after PQ treatment. The severity of lung injury and oxidative stress and levels of inflammatory mediators were examined with and without MSC grafting. Expression levels of TLR4, NF-κB, p65, Nrf2, HO-1, and activated caspase-3 protein were determined by Western blotting.
RESULTS: Administration of MSCs significantly decreased the levels of TNF-α, IL-1β, and IL-6 and polymorphonuclear neutrophil (PMN) count in the bronchoalveolar lavage fluid (BALF) of rats with PQ-induced ALI. In addition, MSC also effectively reduced the wet-to-dry lung weight ratio, lung injury score, and the levels of MDA and 8-OHdG. Conversely, MSC increased SOD and GSH-PX activity in the lung tissue. Moreover, MSC significantly upregulated HO-1, Nrf-2 protein expression in the lung tissue. In contrast, the levels of TLR4, NF-κB p65 and activated caspase-3 protein were decreased in MSC-treated rats (P<0.05).
CONCLUSIONS: Treatment with MSCs overexpressed Nrf2 gene and activated downstream antioxidant HO-1, leading to inhibit oxidative stress, cell apoptosis and inflammatory response in lung tissue, thereby significantly improving PQ-induced acute lung injury in rats.
Keywords: acute lung injury, mesenchymal stromal cells, Paraquat, Tissue Therapy, Historical, Apoptosis, Cell Separation, Edema, Green Fluorescent Proteins, Inflammation Mediators, Mesenchymal Stem Cell Transplantation, Necrosis, Oxidative Stress, Pneumonia
01 August 2022 : EditorialEditorial: Long-Term Effects of Symptomatic and Asymptomatic SARS-CoV-2 Infection in Children and the Changing Pathogenesis of Common Childhood Viruses Driven by the COVID-19 Pandemic
Med Sci Monit 2022; 28:e937927
12 Aug 2022 : Clinical ResearchRisk Factors and Pathogen Spectrum in Continuous Ambulatory Peritoneal Dialysis-Associated Peritonitis: A S...
Med Sci Monit In Press; DOI: 10.12659/MSM.937112
11 Aug 2022 : Meta-AnalysisOptimal Surgical Treatment Method for Anterior Cruciate Ligament Rupture: Results from a Network Meta-Analysis
Med Sci Monit In Press; DOI: 10.12659/MSM.937118
10 Aug 2022 : Review articleProgrammed Cell Death in Diabetic Nephropathy: A Review of Apoptosis, Autophagy, and Necroptosis
Med Sci Monit In Press; DOI: 10.12659/MSM.937766
Most Viewed Current Articles
30 Dec 2021 : Clinical ResearchRetrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...
Med Sci Monit 2021; 27:e935379
13 Nov 2021 : Clinical ResearchAcceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...
Med Sci Monit 2021; 27:e932788
08 Mar 2022 : Review articleA Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...
Med Sci Monit 2022; 28:e936292