scholarly journals Silencing of long noncoding RNA H19 alleviates pulmonary injury, inflammation and fibrosis in acute respiratory distress syndrome rats through regulating MicroRNA-423-5p

2020 ◽  
Author(s):  
Xianyu Mu ◽  
Hongrong Wang ◽  
Haiyong Li
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Long Noncoding Rna ◽  
Noncoding Rna ◽  
Distress Syndrome ◽  
Luciferase Reporter ◽  
Pulmonary Injury ◽  
Tnf Α ◽  
Histology Score

Abstract Background: This study aimed to explore the function of long noncoding RNA H19 (H19) on pulmonary injury, inflammation and fibrosis in lipoproteins (LPS)-induced acute respiratory distress syndrome (ARDS) rats. Methods: The LPS-induced ARDS rat model was established by intratracheal instillation with 2 mg/kg LPS. QRT-PCR was performed to detect the expression of H19, miR-423-5p, tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6,, monocyte chemoattractant protein (MCP)-1 and vascular endothelial growth factor (VEGF). Histology score was detected by hematoxylin-eosin (HE) staining. Enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of proinflammatory cytokines and the concentration of VEGF in bronchoalveolar lavage fluid (BALF). The protein expression of fiber factors was measured by western blot. The degree of fibrosis was observed by masson-trichrome staining. Dual-luciferase reporter assay was used to determine the binding site between miR-423-5p and H19.Results: The expression of H19 was significantly increased, while miR-423-5p was decreased in LPS-induced ARDS rats. Silencing of H19 decreased the mRNA expression of TNF-α, IL-1β, IL-6, MCP-1 and VEGF in LPS-induced ARDS rats, and decreased the levels of TNF-α, IL-1β, IL-6and the concentration of VEGF in BALF, histology score of LPS-induced ARDS rats. H19 inhibition also decreased the fibrosis score and the proteins expression of fiber factors of LPS-induced ARDS rats. Furthermore, miR-423-5p eliminated the effect of H19 on LPS-induced MH-S cells.Conclusions: Silencing of H19 ameliorated the pulmonary injury, inflammation and fibrosis of LPS-induced ARDS through regulating miR-423-5p, which may be a promising therapeutic strategy to treat ARDS.

scholarly journals Inhalationally Administered Semifluorinated Alkanes (SFAs) as Drug Carriers in an Experimental Model of Acute Respiratory Distress Syndrome

Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 431
Author(s):  
Matthias Otto ◽  
Jörg Krebs ◽  
Peter Welker ◽  
René Holm ◽  
Manfred Thiel ◽  
...  
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Lung Mechanics ◽  
Systemic Absorption ◽  
Control Group ◽  
Pharmacokinetic Data ◽  
Tnf Α ◽  
Semifluorinated Alkanes

Aerosol therapy in patients suffering from acute respiratory distress syndrome (ARDS) has so far failed in improving patients’ outcomes. This might be because dependent lung areas cannot be reached by conventional aerosols. Due to their physicochemical properties, semifluorinated alkanes (SFAs) could address this problem. After induction of ARDS, 26 pigs were randomized into three groups: (1) control (Sham), (2) perfluorohexyloctane (F6H8), and (3) F6H8-ibuprofen. Using a nebulization catheter, (2) received 1 mL/kg F6H8 while (3) received 1 mL/kg F6H8 with 6 mg/mL ibuprofen. Ibuprofen plasma and lung tissue concentration, bronchoalveolar lavage (BAL) fluid concentration of TNF-α, IL-8, and IL-6, and lung mechanics were measured. The ibuprofen concentration was equally distributed to the dependent parts of the right lungs. Pharmacokinetic data demonstrated systemic absorption of ibuprofen proofing a transport across the alveolo-capillary membrane. A significantly lower TNF-α concentration was observed in (2) and (3) when compared to the control group (1). There were no significant differences in IL-8 and IL-6 concentrations and lung mechanics. F6H8 aerosol seemed to be a suitable carrier for pulmonary drug delivery to dependent ARDS lung regions without having negative effects on lung mechanics.

Long noncoding plasmacytoma variant translocation 1 facilitates the surveillance of acute respiratory distress syndrome and mortality prediction in sepsis

2021 ◽  
Vol 15 (6) ◽  
pp. 401-412
Author(s):  
Yijue Liu ◽  
Huan Peng ◽  
Feng Gui
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Disease Severity ◽  
Noncoding Rna ◽  
Distress Syndrome ◽  
Mortality Prediction ◽  
Prediction Of Mortality ◽  
Failure Assessment ◽  
Variant Translocation

Aim: We aimed to investigate the association of long noncoding RNA plasmacytoma variant translocation 1 (lncRNA PVT1) expression with acute respiratory distress syndrome (ARDS) risk and its prognostic value for 28-day mortality in sepsis patients. Materials & methods: LncRNA PVT1 expression from 109 sepsis patients and 100 health controls was detected. General sepsis severity was assessed using acute physiology and chronic health evaluation II score and sequential organ failure assessment score. Results: LncRNA PVT1 had an acceptable predictive value for higher ARDS risk, then was identified as an independent risk factor for sepsis ARDS; LncRNA PVT1 expression positively correlated with general disease severity in sepsis patients; LncRNA PVT1 was overexpressed in 28-day deaths compared with 28-day survivors in sepsis patients. Conclusion: LncRNA PVT1 may facilitate the surveillance of ARDS, general disease severity and the prediction of mortality in sepsis patients.

scholarly journals C5a and TNF-α Up-Regulate the Expression of Tissue Factor in Intra-Alveolar Neutrophils of Patients with the Acute Respiratory Distress Syndrome

2008 ◽  
Vol 180 (11) ◽  
pp. 7368-7375 ◽  
Author(s):  
Konstantinos Kambas ◽  
Maciej M. Markiewski ◽  
Ioannis A. Pneumatikos ◽  
Stavros S. Rafail ◽  
Vassiliki Theodorou ◽  
...  
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Tissue Factor ◽  
Distress Syndrome ◽  
Tnf Α

scholarly journals Pendekatan Diagnosis Terbaru Vaping Associated Pulmonary Injury (VAPI)

2020 ◽  
Vol 2 (1) ◽  
pp. 74-80
Author(s):  
Anisa Ramadhanti
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Giant Cell ◽  
Interstitial Pneumonitis ◽  
Distress Syndrome ◽  
Organizing Pneumonia ◽  
Pulmonary Injury ◽  
Lipoid Pneumonia

Rokok elektronik atau vape diklaim lebih aman dan lebih tidak berbahaya karena lebih sedikit mengandung bahan kimia toksik dibandingkan rokok konvensional. Walaupun demikian, masih banyak pihak yang mempertanyakan keamanan rokok elektronik. Liquid dalam rokok elektronik dan aerosol yang dihasilkan terbukti mengandung sejumlah komponen kimia yang kemungkinan memiliki efek yang berbahaya terhadap kesehatan, terutama paru yang dapat menyebabkan vaping-associated pulmonary injury (VAPI). Berdasarkan laporan kasus sebelumnya, VAPI terbagi menjadi beberapa spektrum penyakit, diantaranya adalah pneumonia eosinofilik akut, organizing pneumonia, lipoid pneumonia, kerusakan alveolus difus, dan acute respiratory distress syndrome (ARDS), perdarahan alveolar difus, pneumonitis hipersensitif, dan yang paling jarang yaitu giant-cell interstitial pneumonitis. Terdapat definisi kasus yang terbaru dalam menegakkan diagnosis VAPI, serta tatalaksana

scholarly journals MiR-124-3p helps to protect against acute respiratory distress syndrome by targeting p65

2020 ◽  
Vol 40 (5) ◽  
Author(s):  
Yufeng Liang ◽  
Junjie Xie ◽  
Di Che ◽  
Chunmin Zhang ◽  
Yongmin Lin ◽  
...  
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Cell Apoptosis ◽  
Distress Syndrome ◽  
Direct Interaction ◽  
Pulmonary Injury ◽  
Nr8383 Cells

Abstract Background: Acute respiratory distress syndrome (ARDS) is a severe form of acute lung injury that has a high mortality rate and leads to substantial healthcare costs. MicroRNA-124-3p (miR-124-3p) helps to suppress inflammation during a pulmonary injury. However, its mechanism of action is largely unknown, and its role in ARDS remains to be determined. Methods: Mice and NR8383 cells were exposed to lipopolysaccharides (LPS) to induce ARDS, and their miR-124-3p levels were determined. After a miRNA agomir was administrated to the mice, their pulmonary injuries were evaluated by H&E staining and assays for peripheral inflammatory cytokine levels. The direct interaction between miR-124-3p and p65 was predicted, and then confirmed by a luciferase activity assay. The role played by miRNA-124-3p in regulating p65 expression was further examined by transfection with its agomir, and its role in cell apoptosis was investigated by observing the effects of miRNA overexpression in vitro and in vivo. Results: After exposure to LPS, there was a consistent decrease in miR-124-3p expression in the lungs of mice and in NR8383 cells. After treatment with the miR-124-3p agomir, the degrees of pulmonary injury (e.g. alveolar hemorrhage and interstitial edema), and the increases in IL-1β, IL-6, and TNF-α levels induced by LPS were significantly attenuated. Overexpression of miR-124-3p in NC8383 cells and lung tissues significantly suppressed LPS-induced p65 expression and cell apoptosis. Conclusions: These results suggest that miR-124-3p directly targeted p65, and thereby decreased the levels of inflammation and pulmonary injury in a mouse model of ARDS.

scholarly journals Acute respiratory distress syndrome caused by Mycoplasma pneumoniae in a child: the role of methylprednisolone and clarythromycin

2011 ◽  
Vol 9 (3) ◽  
pp. 386-388
Author(s):  
João Fernando Lourenço de Almeida ◽  
Adalberto Stape ◽  
Eduardo Juan Troster
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Mycoplasma Pneumoniae ◽  
Distress Syndrome ◽  
Pediatric Population ◽  
Pulmonary Injury ◽  
Good Recovery ◽  
Appropriate Use

ABSTRACT Mycoplasma pneumoniae is recognized as an important agent of pneumonia in pediatric population. In rare situations, severe pulmonary injury can develop. The use of corticoids in these cases remains controversial. A case of a girl with acute respiratory distress syndrome and bilateral pleural effusion secondary to pneumonia due to Mycoplasma pneumoniae is described, with good recovery after appropriate use of methylprednisolone and clarythromicyn.

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