scholarly journals Acupoint Catgut Embedding Improves the Lipopolysaccharide-Induced Acute Respiratory Distress Syndrome in Rats

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Dan Li ◽  
Tian Sun ◽  
Laiting Chi ◽  
Dengming Zhao ◽  
Wenzhi Li

Background. This study investigated the potential therapeutic effects of acupoint catgut embedding (ACE) at ST36 and BL13 on lipopolysaccharide- (LPS-) induced acute respiratory distress syndrome (ARDS) in rats. Materials and Methods. Male Sprague-Dawley rats were randomized into the normal saline (NS group with a sham procedure), lipopolysaccharide (LPS group with a sham procedure), and LPS plus ACE (LPS+ACE with ACE at bilateral BL13 and ST36 acupoints one day before LPS injection) groups. After intratracheal instillation of normal saline or LPS (0.5 mg/kg), all rats were subjected to mechanical ventilation for 4 h. Their blood gas was analyzed before and after lung injury, and their lung pressure-volumes were measured longitudinally. The levels of TNF-α, IL-6, IL-10, and phosphatidylcholine (PC) and total proteins (TP) in bronchial alveolar lavage fluid (BALF) were assessed. Their wet to dry lung weight ratios, histology, myeloperoxidase (MPO), superoxide dismutase (SOD) activity, and malondialdehyde (MDA) levels were measured. Their lung aquaporin 1 (AQP1) and Occludin protein levels were analyzed. Results. LPS administration significantly decreased the ratios of PaO2/FiO2 and pressure-volumes and induced lung inflammation and injury by increased concentrations of TNF-α, IL-6, IL-10, and TP in BALF and MPO and MDA in the lung but decreased PC in BALF and SOD activity in the lungs. LPS also reduced AQP1 and Occludin protein levels in the lung of rats. In contrast, ACE significantly mitigated the LPS-induced lung injury, inflammation, and oxidative stress and preserved the AQP1 and Occludin contents in the lung of rats. Conclusions. ACE significantly improved respiratory function by mitigating inflammation and oxidative stress and preserving AQP1 and Occludin expression in the lung in a rat model of LPS-induced ARDS.

2020 ◽  
Vol 319 (5) ◽  
pp. L825-L832
Author(s):  
Eric D. Morrell ◽  
Serge Grazioli ◽  
Chi Hung ◽  
Osamu Kajikawa ◽  
Susanna Kosamo ◽  
...  

The cellular communication network factor 1 (CCN1) is a matricellular protein that can modulate multiple tissue responses, including inflammation and repair. We have previously shown that adenoviral overexpression of Ccn1 is sufficient to cause acute lung injury in mice. We hypothesized that CCN1 is present in the airspaces of lungs during the acute phase of lung injury, and higher concentrations are associated with acute respiratory distress syndrome (ARDS) severity. We tested this hypothesis by measuring 1) CCN1 in bronchoalveolar lavage fluid (BALF) and lung homogenates from mice subjected to ventilation-induced lung injury (VILI), 2) Ccn1 gene expression and protein levels in MLE-12 cells (alveolar epithelial cell line) subjected to mechanical stretch, and 3) CCN1 in BALF from mechanically ventilated humans with and without ARDS. BALF CCN1 concentrations and whole lung CCN1 protein levels were significantly increased in mice with VILI ( n = 6) versus noninjured controls ( n = 6). Ccn1 gene expression and CCN1 protein levels were increased in MLE-12 cells cultured under stretch conditions. Subjects with ARDS ( n = 77) had higher BALF CCN1 levels compared with mechanically ventilated subjects without ARDS ( n = 45) ( P < 0.05). In subjects with ARDS, BALF CCN1 concentrations were associated with higher total protein, sRAGE, and worse [Formula: see text]/[Formula: see text] ratios (all P < 0.05). CCN1 is present in the lungs of mice and humans during the acute inflammatory phase of lung injury, and concentrations are higher in patients with increased markers of severity. Alveolar epithelial cells may be an important source of CCN1 under mechanical stretch conditions.


2020 ◽  
Author(s):  
Zong-Yu Wang ◽  
Zhi-Chao Zhou ◽  
Jie Zheng ◽  
Zhu-Kai Cong ◽  
Xi Zhu

Abstract Background: Acute respiratory distress syndrome (ARDS) is a common and extensively researched condition, and treatment modalities are continuously being developed and improved. Although the literature on ARDS treatment is vast, there have not been any bibliographic analyses examining trends in this area. We aimed to systematically evaluate the literature on ARDS treatments published between 2000 and 2019, from the perspective of bibliometrics.Methods: Literature retrieval was performed in PubMed and in the Web of Science Core Collection, and analyzed for publication and temporal trends. CiteSpace was used to perform co-occurrence analysis for institutions, and reference co-citation analysis for research topics. Burst keyword detection was used to predict future areas of research interest in the field.Results: A total of 13,933 articles were retrieved. The journal Critical Care Medicine published the largest number of articles (956, 6.86%). The University of Toronto was affiliated with the most publications (574, 4.28%) and had the highest degree of betweenness centrality, indicating extensive inter-institution collaboration. The papers on ARDS treatment published between 2000 and 2019 were grouped into 10 major clusters, 3 of which indicated recent activity (“acute lung injury,” “long-term outcome” and “extracorporeal membrane oxygenation”). Fifteen burst keywords/terms were identified, including extracorporeal membrane oxygenation, meta-analysis and oxidative stress.Conclusions: On the basis of the literature published in the preceding 20 years, the exploration of ARDS treatment is an ongoing concern. Extracorporeal membrane oxygenation was an active focus of research in this field. It and oxidative stress are likely to become major topics of research interest in the near future. Meta-analysis will be a popular method in analyzing the efficacy of ARDS treatments.


2020 ◽  
Author(s):  
Zong-Yu Wang ◽  
Zhi-Chao Zhou ◽  
Jie Zheng ◽  
Zhu-Kai Cong ◽  
Xi Zhu

Abstract Background: Acute respiratory distress syndrome (ARDS) is a common and extensively researched condition, and treatment modalities are continuously being developed and improved. Although the literature on ARDS treatment is vast, there have not been any bibliographic analyses examining trends in this area. We aimed to systematically evaluate the literature on ARDS treatments published between 2000 and 2019, from the perspective of bibliometrics.Methods: Literature retrieval was performed in PubMed and in the Web of Science Core Collection, and analyzed for publication and temporal trends. CiteSpace was used to perform co-occurrence analysis for institutions, and reference co-citation analysis for research topics. Burst keyword detection was used to predict future areas of research interest in the field.Results: A total of 13,933 articles were retrieved. The journal Critical Care Medicine published the largest number of articles (956, 6.86%). The University of Toronto was affiliated with the most publications (574, 4.28%) and had the highest degree of betweenness centrality, indicating extensive inter-institution collaboration. The papers on ARDS treatment published between 2000 and 2019 were grouped into 10 major clusters, 3 of which indicated recent activity (“acute lung injury,” “long-term outcome” and “extracorporeal membrane oxygenation”). Fifteen burst keywords/terms were identified, including extracorporeal membrane oxygenation, meta-analysis and oxidative stress.Conclusions: On the basis of the literature published in the preceding 20 years, the exploration of ARDS treatment is an ongoing concern. Extracorporeal membrane oxygenation was an active focus of research in this field. It and oxidative stress are likely to become major topics of research interest in the near future. Meta-analysis will be a popular method in analyzing the efficacy of ARDS treatments.


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