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      Research Progress on Autophagy Regulation by Active Ingredients of Traditional Chinese Medicine in the Treatment of Acute Lung Injury

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          Abstract

          Autophagy is a highly conserved process that maintains cell stability in eukaryotes, participates in the turnover of intracellular substances to maintain cell function, helps to resist pathogen invasion, and improves cell tolerance to environmental changes. Autophagy has been observed in many diseases, and the symptoms of these diseases are significantly improved by regulating autophagy. Autophagy is also involved in the development of lung diseases. Studies have shown that autophagy may play a beneficial or harmful role in acute lung injury (ALI), and ALI has been treated with traditional Chinese medicine designed to promote or inhibit autophagy. In this paper, the molecular mechanism and common pathways regulating autophagy and the relationship between autophagy and ALI are introduced, and the active ingredients of traditional Chinese medicine that improve ALI symptoms by regulating autophagy are summarized.

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          Acute respiratory distress syndrome: the Berlin Definition.

          V Ranieri, Gordon D Rubenfeld, B Taylor Thompson … (2013)
          The acute respiratory distress syndrome (ARDS) was defined in 1994 by the American-European Consensus Conference (AECC); since then, issues regarding the reliability and validity of this definition have emerged. Using a consensus process, a panel of experts convened in 2011 (an initiative of the European Society of Intensive Care Medicine endorsed by the American Thoracic Society and the Society of Critical Care Medicine) developed the Berlin Definition, focusing on feasibility, reliability, validity, and objective evaluation of its performance. A draft definition proposed 3 mutually exclusive categories of ARDS based on degree of hypoxemia: mild (200 mm Hg < PaO2/FIO2 ≤ 300 mm Hg), moderate (100 mm Hg < PaO2/FIO2 ≤ 200 mm Hg), and severe (PaO2/FIO2 ≤ 100 mm Hg) and 4 ancillary variables for severe ARDS: radiographic severity, respiratory system compliance (≤40 mL/cm H2O), positive end-expiratory pressure (≥10 cm H2O), and corrected expired volume per minute (≥10 L/min). The draft Berlin Definition was empirically evaluated using patient-level meta-analysis of 4188 patients with ARDS from 4 multicenter clinical data sets and 269 patients with ARDS from 3 single-center data sets containing physiologic information. The 4 ancillary variables did not contribute to the predictive validity of severe ARDS for mortality and were removed from the definition. Using the Berlin Definition, stages of mild, moderate, and severe ARDS were associated with increased mortality (27%; 95% CI, 24%-30%; 32%; 95% CI, 29%-34%; and 45%; 95% CI, 42%-48%, respectively; P < .001) and increased median duration of mechanical ventilation in survivors (5 days; interquartile [IQR], 2-11; 7 days; IQR, 4-14; and 9 days; IQR, 5-17, respectively; P < .001). Compared with the AECC definition, the final Berlin Definition had better predictive validity for mortality, with an area under the receiver operating curve of 0.577 (95% CI, 0.561-0.593) vs 0.536 (95% CI, 0.520-0.553; P < .001). This updated and revised Berlin Definition for ARDS addresses a number of the limitations of the AECC definition. The approach of combining consensus discussions with empirical evaluation may serve as a model to create more accurate, evidence-based, critical illness syndrome definitions and to better inform clinical care, research, and health services planning.
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            Neutrophil recruitment and function in health and inflammation.

            Elzbieta Kolaczkowska, Paul Kubes (2013)
            Neutrophils have traditionally been thought of as simple foot soldiers of the innate immune system with a restricted set of pro-inflammatory functions. More recently, it has become apparent that neutrophils are, in fact, complex cells capable of a vast array of specialized functions. Although neutrophils are undoubtedly major effectors of acute inflammation, several lines of evidence indicate that they also contribute to chronic inflammatory conditions and adaptive immune responses. Here, we discuss the key features of the life of a neutrophil, from its release from bone marrow to its death. We discuss the possible existence of different neutrophil subsets and their putative anti-inflammatory roles. We focus on how neutrophils are recruited to infected or injured tissues and describe differences in neutrophil recruitment between different tissues. Finally, we explain the mechanisms that are used by neutrophils to promote protective or pathological immune responses at different sites.
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              Autophagy: cellular and molecular mechanisms.

              Danielle Glick, Sandra Barth, Kay F Macleod (2010)
              Autophagy is a self-degradative process that is important for balancing sources of energy at critical times in development and in response to nutrient stress. Autophagy also plays a housekeeping role in removing misfolded or aggregated proteins, clearing damaged organelles, such as mitochondria, endoplasmic reticulum and peroxisomes, as well as eliminating intracellular pathogens. Thus, autophagy is generally thought of as a survival mechanism, although its deregulation has been linked to non-apoptotic cell death. Autophagy can be either non-selective or selective in the removal of specific organelles, ribosomes and protein aggregates, although the mechanisms regulating aspects of selective autophagy are not fully worked out. In addition to elimination of intracellular aggregates and damaged organelles, autophagy promotes cellular senescence and cell surface antigen presentation, protects against genome instability and prevents necrosis, giving it a key role in preventing diseases such as cancer, neurodegeneration, cardiomyopathy, diabetes, liver disease, autoimmune diseases and infections. This review summarizes the most up-to-date findings on how autophagy is executed and regulated at the molecular level and how its disruption can lead to disease. Copyright (c) 2010 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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                Author and article information

                Journal
                Journal ID (nlm-ta): J Inflamm Res
                Journal ID (iso-abbrev): J Inflamm Res
                Journal ID (publisher-id): jir
                Title: Journal of Inflammation Research
                Publisher: Dove
                ISSN (Electronic): 1178-7031
                Publication date (Electronic): 17 April 2023
                Publication date Collection: 2023
                Volume: 16
                Pages: 1671-1691
                Affiliations
                [1 ]First Clinical Medical College, Shandong University of Traditional Chinese Medicine , Jinan, People’s Republic of China
                [2 ]Faculty of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine , Jinan, People’s Republic of China
                [3 ]Affiliated Hospital of Shandong University of Traditional Chinese Medicine , Jinan, People’s Republic of China
                Author notes
                Correspondence: Hao Hao; Yang Liu, Affiliated Hospital of Shandong University of Traditional Chinese Medicine , Jinan, People’s Republic of China, Tel +86-13583119291; +86-13864018185, Email haohao0826@163.com; 13864018185@163.com
                Article
                Publisher ID: 398203
                DOI: 10.2147/JIR.S398203
                PMC ID: 10120836
                PubMed ID: 37092134
                SO-VID: afc50db4-758f-47d3-a808-5d7beafbd997
                Copyright © © 2023 Dong et al.
                License:

                This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms ( https://www.dovepress.com/terms.php).

                History
                Date received : 18 November 2022
                Date accepted : 11 April 2023
                Page count
                Figures: 6, Tables: 1, References: 139, Pages: 21
                Funding
                Funded by: the National Natural Science Foundation of China;
                Funded by: the China Postdoctoral Science Foundation;
                This work was supported by the National Natural Science Foundation of China (Grant No. 81704028) and the China Postdoctoral Science Foundation (Grant No. 2020M670045ZX).
                Categories
                Subject: Review

                ScienceOpen disciplines: Immunology
                Keywords: autophagy,inflammation,oxidative stress,apoptosis
                Data availability:
                ScienceOpen disciplines: Immunology
                Keywords: autophagy, inflammation, oxidative stress, apoptosis

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