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Background: We investigated effects of mesenchymal stem cells (MSC) or low-flow extracorporeal life support (ECLS) as adjunctive treatments for acute respiratory distress syndrome (ARDS) due to inhalation injury and burns. We hypothesized that these interventions decrease histological end-organ damage.
Methods: Anesthetized female swine underwent smoke inhalation injury and 40% TBSA burns, then critical care for 72h. The following groups were studied: CTR (no injury, n = 4), ICTR (injured untreated, n = 10), Allo (injured treated with allogenic MSC, n = 10), Auto (injured treated with autologous MSC, n = 10), Hemo (injured and treated with the Hemolung low flow ECLS system, n = 9), and Nova (injured and treated with the NovaLung low flow ECLS system, n = 8). Histology scores from lung, kidneys, liver, and jejunum were calculated. Data are presented as means±SEM.
Results: Survival at 72h was 100% in CTR; 40% in ICTR; 50% in Allo; 90% in Auto; 33% in Hemo; 63% in Nova. ARDS developed in 0/10 CTR; 10/10 ICTR; 8/9 Hemo; 5/8 Nova; 9/10 Allo; 6/10 Auto. Diffuse alveolar damage (DAD) was present in all injured groups. MSC groups had significantly lower DAD scores than ICTR animals (Allo 26.6 ± 3.4 and Auto 18.9 ± 1.5 vs. ICTR 46.8 ± 2.1, p < 0.001). MSC groups also had lower DAD scores than ECLS animals (Allo vs. Nova, p < 0.05, Allo vs. Hemo p < 0.001, Auto vs. Nova p < 0.001, Auto vs. Hemo, p < 0.001). Kidney injury ICTR (p < 0.05) and Hemo (p < 0.01) were higher than in CTR. By logistic regression, a PaO-to-FiO ratio (PFR) < 300 was a function of the DAD score: logit (PFR < 300) = 0.84 + 0.072*DAD Score, odds ratio 1.074 (1.007, 1.147, p < 0.05) with a ROC AUC of 0.76, p < 0.001.
Conclusion: Treatment with Auto MSC followed by Allo and then Nova were most effective in mitigating ARDS and MOF severity in this model. Further studies will elucidate the role of combination therapies of MSC and ECLS as comprehensive treatments for ARDS and MOF.
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http://dx.doi.org/10.1016/j.burns.2019.07.020 | DOI Listing |
Adv Sci (Weinh)
December 2024
Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, P. R. China.
Neuropathic pain, one of the most refractory pain diseases, remains a formidable medical challenge. There is still an unmet demand for effective and safe therapies to address this condition. Herein, a rat model of nerve injury-induced neuropathic pain is first established to explore its pathophysiological characteristics.
View Article and Find Full Text PDFClin Sci (Lond)
December 2024
University of Utah Health, Salt Lake City, Utah, United States.
Septic acute kidney injury (AKI) is an important risk factor for developing chronic kidney disease (CKD). Hu antigen R (HuR) is recognized as a crucial modulator in inflammation. We hypothesized that elevated HuR contributes to the transition from septic AKI to CKD by promoting persistent inflammation and fibrosis, and inhibition of HuR may reverse septic kidney injury.
View Article and Find Full Text PDFStem Cell Res Ther
December 2024
Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Objective: Spinal cord injury (SCI) is a severe and permanent nerve damage condition that poses significant burdens on individuals and society. Various therapeutic approaches have been explored to mitigate the consequences of SCI. Tissue engineering and regenerative medicine have emerged as a promising avenue for addressing this issue.
View Article and Find Full Text PDFWiad Lek
December 2024
I. HORBACHEVSKY TERNOPIL NATIONAL MEDICAL UNIVERSITY, MINISTRY OF HEALTH OF UKRAINE, TERNOPIL, UKRAINE.
Objective: Aim: To determine the effect of cell therapy on the intensity of lipid peroxidation processes in the liver, kidneys and lungs of rats of different ages under conditions of experimental cranio-skeletal trauma (CST).
Patients And Methods: Materials and Methods: In the experiments, 129 white male Wistar line rats of different age groups were used: immature rats aged 100-120 days and weighing 90-110 g; mature rats aged 6-8 months and weighing 180-200 g; and old rats aged 19-23 months and weighing 300-320 g. In each age group, CST was modeled under thiopental sodium anesthesia.
Dental caries is one of the most common health issues worldwide arising from the complex interactions of bacteria. In response to harmful stimuli, desirable outcome for the tooth is the formation of tertiary dentin, a protective reparative process that generates new hard tissue. This reparative dentinogenesis is associated with significant inflammation, which triggers the recruitment and differentiation of dental pulp stem cells (DPSCs).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!