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Yang X, Ma L. Post‑treatment with propofol inhibits inflammatory response in LPS‑induced alveolar type II epithelial cells. Exp Ther Med 2022; 23:249. [PMID: 35261621 PMCID: PMC8855515 DOI: 10.3892/etm.2022.11174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/12/2022] [Indexed: 11/21/2022] Open
Abstract
Over-inflammation and severe lung injury are major causes of morbidity and mortality in patients with coronavirus disease 2019 (COVID-19). With the COVID-19 pandemic, an increasing number of patients with preexisting lung injury and inflammation are undergoing surgery or artificial ventilation under sedation in intensive care units, where 2,6-diisopropylphenol (propofol) is a commonly used drug for sedation. The aim of the present study was to investigate whether post-inflammation treatment with propofol protects epithelial type II cells against inflammation in an in vitro model of inflammation. The A549 cell line, characterised as epithelial type II cells, were exposed to lipopolysaccharide (LPS) for 2 h and subsequently treated with different concentrations of propofol (0, 10, 25 or 50 µM) for 3 h. Western blot and reverse transcription-quantitative PCR analyses were used to detect the protein and mRNA expression levels, respectively, of CD14 and Toll-like receptor 4 (TLR4). Immunofluorescence staining was used to detect the in situ CD14 and TLR4 expression in epithelial type II cells. Tumor necrosis factor (TNF)-α production was also examined using ELISA. LPS significantly increased the expression of CD14 and TLR4, as well as the secretion of TNF-α. Post-treatment with 25 and 50 µM propofol of the LPS-treated cells significantly decreased CD14 and TLR4 expression, as well as TNF-α secretion, compared with the cells treated with LPS only, indicating that post-treatment with propofol alleviated inflammation and this effect was dose-dependent. The present study suggested that treatment with propofol after LPS administration has a protective effect on epithelial type II cells.
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Affiliation(s)
- Xilun Yang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Ling Ma
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Liu Y, Liu L, Xing W, Sun Y. Anesthetics mediated the immunomodulatory effects via regulation of TLR signaling. Int Immunopharmacol 2021; 101:108357. [PMID: 34785143 DOI: 10.1016/j.intimp.2021.108357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/29/2021] [Accepted: 11/07/2021] [Indexed: 11/29/2022]
Abstract
Anesthetics have been widely used in surgery and found to suppress inflammatory injury and affect the outcomes of the surgery and diseases. In contrast, anesthetics are also found to induce neuronal injury and inflammation. However, the immune-modulation mechanism of anesthetics is still not clear. Recent studies have shown that the immune-modulation of anesthetics is associated with the regulation of toll-like receptor (TLR)-mediated signaling. Moreover, the regulation of anesthetics in TLR signaling is related to modulations of non-coding RNAs (nc RNAs). Consistently, nc RNAs are mainly divided into micro RNAs (miRs) and long non-coding RNAs (lnc RNAs), which have been found to exert regulatory effects on the immune system. In this review, we summarize the immunomodulatory functions of the widely used anesthetic agents, which are associated with regulation of TLR signaling. In addition, we also focus on the roles of nc RNAs induced by anesthetics in regulations of TLR signaling.
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Affiliation(s)
- Yan Liu
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Li Liu
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Wanying Xing
- Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Yan Sun
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
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Kashif H, Shah D, Sukumari-Ramesh S. Dysregulation of microRNA and Intracerebral Hemorrhage: Roles in Neuroinflammation. Int J Mol Sci 2021; 22:8115. [PMID: 34360881 PMCID: PMC8347974 DOI: 10.3390/ijms22158115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 12/23/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a major public health problem and devastating subtype of stroke with high morbidity and mortality. Notably, there is no effective treatment for ICH. Neuroinflammation, a pathological hallmark of ICH, contributes to both brain injury and repair and hence, it is regarded as a potential target for therapeutic intervention. Recent studies document that microRNAs, small non-coding RNA molecules, can regulate inflammatory brain response after ICH and are viable molecular targets to alter brain function. Therefore, there is an escalating interest in studying the role of microRNAs in the pathophysiology of ICH. Herein, we provide, for the first time, an overview of the microRNAs that play roles in ICH-induced neuroinflammation and identify the critical knowledge gap in the field, as it would help design future studies.
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Affiliation(s)
| | | | - Sangeetha Sukumari-Ramesh
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (H.K.); (D.S.)
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Park HJ, Piao L, Seo EH, Lee SH, Kim SH. The effect of repetitive exposure to intravenous anesthetic agents on the immunity in mice. Int J Med Sci 2020; 17:428-436. [PMID: 32174773 PMCID: PMC7053311 DOI: 10.7150/ijms.41899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction: This study was designed to assess the effect of repetitive exposure to intravenous anesthetic agents on the immunity in mice. Materials and Methods: The mice were divided into six groups: three intravenous anesthetic agents groups (dexmedetomidine, midazolam and propofol groups), and three corresponding control groups (CD, CM, and CP groups). The intravenous injections were administered once per day for 5 days. The immunity of mice was checked after the last intravenous injection. Histopathology and immunochemistry of liver and kidneys were evaluated. Cytokine levels in the blood was also checked. vs. evaluated with cytokine levels in the blood. Results: Cluster of differentiation (CD)4+ T cells were significantly less expressed in dexmedetomidine and propofol groups, compared with the corresponding control groups [34.08 ± 5.63% in the dexmedetomidine group vs. 59.74 ± 8.64% in the CD group, p < 0.05; 25.28 ± 7.28% in the propofol group vs. 61.12 ± 2.70% in the Cp group, p < 0.05]. Apoptosis of CD4+ T cells was increased significantly in dexmedetomidine and propofol groups, compared with the corresponding control groups. Histopathological findings of liver and kidneys did not show any specific differences of any of three intravenous anesthetic agents groups with their corresponding control groups, although immunohistochemical examination indicated significantly lower expression of Toll-like receptor-4 from liver and kidneys in dexmedetomidine and propofol groups. The cytokine levels were not different between the groups. Conclusion: Repetitive exposure to dexmedetomidine and propofol reduced the expression of CD4+ T cells but did not induce any significant liver or kidney injuries.
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Affiliation(s)
- Hyun Jun Park
- Department of Infection and Immunology, Konkuk University School of Medicine, Seoul, Korea
| | - Liyun Piao
- Department of Infection and Immunology, Konkuk University School of Medicine, Seoul, Korea
| | - Eun-Hye Seo
- BK21 plus, Department of Cellular and Molecular Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Seung Hyun Lee
- Department of Microbiology, Konkuk University School of Medicine, Seoul, Korea.,Department of Medicine, Institute of Biomedical Science and Technology, Konkuk University School of Medicine, Seoul, Korea
| | - Seong-Hyop Kim
- Department of Infection and Immunology, Konkuk University School of Medicine, Seoul, Korea.,Department of Medicine, Institute of Biomedical Science and Technology, Konkuk University School of Medicine, Seoul, Korea.,Department of Anesthesiology and Pain medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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Zhi H, Yuan N, Wu JP, Lu LM, Chen XY, Wu SK, Mai BX. MicroRNA-21 attenuates BDE-209-induced lipid accumulation in THP-1 macrophages by downregulating Toll-like receptor 4 expression. Food Chem Toxicol 2018; 125:71-77. [PMID: 30597220 DOI: 10.1016/j.fct.2018.12.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/25/2018] [Accepted: 12/27/2018] [Indexed: 12/29/2022]
Abstract
Growing evidence demonstrates a possible response of specific microRNA (miRNA) to environmental pollutant stimuli in multiple biological processes. We previously reported that a persistent organic pollutant, decabromodiphenyl ether (BDE-209), can enhance Toll-like receptor 4 (TLR4)-dependent lipid uptake in THP-1 macrophages; whether miRNAs are involved in this process remains unclear. In the present study, we investigated the levels of several miRNAs related to TLR4 signaling, including miRs-9, -21, -27b, -125b, -132, -146a, -147, -155, and -let-7e, in THP-1 macrophages after stimulation by BDE-209 and oxidized low-density lipoprotein. The results showed that the levels of miR-21 were significantly suppressed by BDE-209 at concentrations of 6.25, 12.5 and 25 μM, in a dose-dependent manner; whereas there was no significant changes for the other miRNAs investigated. Moreover, the suppression of miR-21 was accompanied by an upregulated TLR4 expression, at both mRNA and protein levels. Further analysis showed that the up-regulated TLR4 induced by BDE-209 was inhibited in macrophages transfected with miR-21 mimic; meanwhile opposite results were exhibited when an anti-miR-21 inhibitor was transfected to the macrophages. Additionally, transfection with miR-21 mimic effectively attenuated BDE-209-induced lipid accumulation in macrophages. Together, these data illustrate that miR-21 inhibits BDE-209-triggered lipid accumulation in macrophages through down-regulating TLR4 expression.
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Affiliation(s)
- Hui Zhi
- School of Basic Medical Sciences, Wannan Medical College, Wuhu, 241002, China
| | - Na Yuan
- School of Basic Medical Sciences, Wannan Medical College, Wuhu, 241002, China
| | - Jiang-Ping Wu
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu, 241002, China.
| | - Lin-Ming Lu
- School of Basic Medical Sciences, Wannan Medical College, Wuhu, 241002, China.
| | - Xiao-Yun Chen
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu, 241002, China
| | - Si-Kang Wu
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu, 241002, China
| | - Bi-Xian Mai
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
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