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Chen F, Chai YH, Zhang F, Liu YQ, Zhang Y, Shi YJ, Zhang JM, Leng YF. Network pharmacology analysis combined with experimental validation to explore the therapeutic mechanism of salidroside on intestine ischemia reperfusion. Biosci Rep 2023; 43:BSR20230539. [PMID: 37530723 PMCID: PMC10462912 DOI: 10.1042/bsr20230539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/23/2023] [Accepted: 07/05/2023] [Indexed: 08/03/2023] Open
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Salidroside (SAL), a phenolic natural product present in Rhodiola rosea, are commonly used in the treatment of various ischemic-hypoxic diseases, including intestinal ischemia-reperfusion (IR) injury. However, their efficacy and potential mechanisms in the treatment of intestinal IR injury have not been investigated. OBJECTIVE The objective of the present study is to investigate the pharmacological mechanism of action of SAL on intestinal IR injury using a network pharmacology approach combined with experimental validation. METHODS In the present study, we used the Traditional Chinese Medicine Systematic Pharmacology (TCMSP) database and analysis platform and Comparative Toxicogenomics Database (CTD) to predict possible target genes of SAL, collected relevant target genes of intestinal IR injury from GeneCards and DisGenet websites, and collected summary data to screen common target genes. Then, the protein-protein interaction (PPI) target network was constructed and analyzed by STRING database and Cytoscape 3.8.2 with the above intersecting genes. Then, gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed and the component-target-pathway network was constructed, followed by the use of molecular docking and molecular dynamic simulation to verify the possible binding conformation between SAL and candidate targets to further explore the potential targets of SAL in the treatment of intestinal IR injury. Finally, an in vivo model of mouse superior mesenteric artery ligation was established to assess the anti-intestinal IR injury effect of SAL by assessing histopathological changes in mouse small intestine by HE staining, detecting inflammatory factor expression by ELISA kit, and detecting the expression of key protein targets by Western blotting. RESULTS A total of 166 SAL target genes and 1740 disease-related targets were retrieved, and 88 overlapping proteins were obtained as potential therapeutic targets. The pathway enrichment analysis revealed that the pharmacological effects of SAL on intestinal IR injury were anti-hypoxic, anti-inflammatory and metabolic pathway related, and the molecular docking and molecular dynamic simulation results showed that the core bioactive components had good binding affinity for TXNIP and AMPK, and the immunoblotting results indicated that the expression levels of TXNIP and AMPK in the small intestinal tissues of mice in the drug-treated group compared with the model group were significantly changed. CONCLUSION SAL may target AMPK and TXNIP domains to act as a therapeutic agent for intestinal IR. These findings comprehensively reveal the potential therapeutic targets for SAL against intestinal IR and provide theoretical basis for the clinical application of SAL in the treatment of intestinal IR.
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Affiliation(s)
- Feng Chen
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
- Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Yi-hong Chai
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Fa Zhang
- Department of Urology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Yong-qiang Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
- Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Yan Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
- Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Ya-jing Shi
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Jian-ming Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
| | - Yu-fang Leng
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, GanSu Province, China
- Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, GanSu Province, China
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Cai J, Chen X, Liu X, Li Z, Shi A, Tang X, Xia P, Zhang J, Yu P. AMPK: The key to ischemia-reperfusion injury. J Cell Physiol 2022; 237:4079-4096. [PMID: 36134582 DOI: 10.1002/jcp.30875] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/08/2022] [Accepted: 08/23/2022] [Indexed: 11/09/2022]
Abstract
Ischemia-reperfusion injury (IRI) refers to a syndrome in which tissue damage is further aggravated and organ function further deteriorates when blood flow is restored after a period of tissue ischemia. Acute myocardial infarction, stress ulcer, pancreatitis, intestinal ischemia, intermittent claudication, acute tubular necrosis, postshock liver failure, and multisystem organ failure are all related to reperfusion injury. AMP-activated protein kinase (AMPK) has been identified in multiple catabolic and anabolic signaling pathways. The functions of AMPK during health and diseases are intriguing but still need further research. Except for its conventional roles as an intracellular energy switch, emerging evidence reveals the critical role of AMPK in IRI as an energy-sensing signal molecule by regulating metabolism, autophagy, oxidative stress, inflammation, and other progressions. At the same time, drugs based on AMPK for the treatment of IRI are constantly being researched and applied in clinics. In this review, we summarize the mechanisms underlying the effects of AMPK in IRI and describe the AMPK-targeting drugs in treatment, hoping to increase the understanding of AMPK in IRI and provide new insights into future clinical treatment.
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Affiliation(s)
- Jie Cai
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xinyue Chen
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xingyu Liu
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhangwang Li
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ao Shi
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Department of Biochemistry and Molecular Biology, Mayo Graduate School of Biomedical Science, Mayo Clinic, Rochester, Minnesota, USA
| | - Xiaoyi Tang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Panpan Xia
- Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang, China
| | - Jing Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Peng Yu
- Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang, China
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3
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Protective effect of Ulinastatin on acute lung injury in diabetic sepsis rats. Int Immunopharmacol 2022; 108:108908. [DOI: 10.1016/j.intimp.2022.108908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 12/22/2022]
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4
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Jin B, Li G, Zhou L, Fan Z. Mechanism Involved in Acute Liver Injury Induced by Intestinal Ischemia-Reperfusion. Front Pharmacol 2022; 13:924695. [PMID: 35694264 PMCID: PMC9185410 DOI: 10.3389/fphar.2022.924695] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 12/28/2022] Open
Abstract
Intestinal ischemia-reperfusion (I/R) is a common pathophysiological process, which can occur in many conditions such as acute enteric ischemia, severe burns, small intestinal transplantation, etc,. Ischemia-reperfusion of the intestine is often accompanied by distal organ injury, especially liver injury. This paper outlined the signal pathways and cytokines involved in acute liver injury induced by intestinal I/R: the NF-κB Signaling Pathway, the P66shc Signaling Pathway, the HMGB1 Signaling Pathway, the Nrf2-ARE Signaling Pathway, the AMPK-SIRT-1 Signaling Pathway and other cytokines, providing new ideas for the prevention and treatment of liver injury caused by reperfusion after intestinal I/R.
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Affiliation(s)
- Binghui Jin
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China.,Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Guangyao Li
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China.,Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Lin Zhou
- Department of Outpatient, the NO. 967 Hospital of PLA Joint Logistics Support Force, Dalian Medical University, Dalian, China
| | - Zhe Fan
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China.,Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
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5
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Targeting AMPK signaling in ischemic/reperfusion injury: From molecular mechanism to pharmacological interventions. Cell Signal 2022; 94:110323. [DOI: 10.1016/j.cellsig.2022.110323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 12/16/2022]
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6
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Xin Y, Zhang Y, Deng S, Hu X. Vagus Nerve Stimulation Attenuates Acute Skeletal Muscle Injury Induced by Hepatic Ischemia/Reperfusion Injury in Rats. Front Pharmacol 2022; 12:756997. [PMID: 35046803 PMCID: PMC8762262 DOI: 10.3389/fphar.2021.756997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Vagus nerve stimulation (VNS) has a protective effect on distal organ injury after ischemia/reperfusion (I/R) injury. We aimed to investigate the protective efficacy of VNS on hepatic I/R injury-induced acute skeletal muscle injury and explore its underlying mechanisms. To test this hypothesis, male Sprague-Dawley rats were randomly divided into three groups: sham group (sham operation, n = 6); I/R group (hepatic I/R with sham VNS, n = 6); and VNS group (hepatic I/R with VNS, n = 6). A hepatic I/R injury model was prepared by inducing hepatic ischemia for 1 h (70%) followed by hepatic reperfusion for 6 h. VNS was performed during the entire hepatic I/R process. Tissue and blood samples were collected at the end of the experiment for biochemical assays, molecular biological preparations, and histological examination. Our results showed that throughout the hepatic I/R process, VNS significantly reduced inflammation, oxidative stress, and apoptosis, while significantly increasing the protein levels of silent information regulator 1 (SIRT1) and decreasing the levels of acetylated forkhead box O1 and Ac-p53, in the skeletal muscle. These data suggest that VNS can alleviate hepatic I/R injury-induced acute skeletal muscle injury by suppressing inflammation, oxidative stress, and apoptosis, potentially via the SIRT1 pathway.
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Affiliation(s)
- Ying Xin
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yifeng Zhang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Simin Deng
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xinqun Hu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
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Du Q, Zhou L, Li M, Lyu F, Liu J, Ding Y. Omega‐3 polyunsaturated fatty acid encapsulation system: Physical and oxidative stability, and medical applications. FOOD FRONTIERS 2022. [DOI: 10.1002/fft2.134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Qiwei Du
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
| | - Linhui Zhou
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
| | - Minghui Li
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
| | - Fei Lyu
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
| | - Jianhua Liu
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
| | - Yuting Ding
- College of Food Science and Technology Zhejiang University of Technology Hangzhou P. R. China
- Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province Hangzhou P. R. China
- National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou) Hangzhou P. R. China
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Oxypaeoniflorin Prevents Acute Lung Injury Induced by Lipopolysaccharide through the PTEN/AKT Pathway in a Sirt1-Dependent Manner. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6878026. [PMID: 34394832 PMCID: PMC8357472 DOI: 10.1155/2021/6878026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/23/2021] [Accepted: 07/09/2021] [Indexed: 12/30/2022]
Abstract
Acute lung injury (ALI) is featured by pulmonary edema, alveolar barrier injury, inflammatory response, and oxidative stress. The activation of Sirt1 could relieve lipopolysaccharide- (LPS-) induced murine ALI by maintaining pulmonary epithelial barrier function. Oxypaeoniflorin (Oxy) serves as a major component of Paeonia lactiflora Pall., exerting cardioprotection by activating Sirt1. However, the role of Oxy in ALI induced by LPS remains unclear. The aim of the present study is to illustrate the modulatory effects and molecular mechanisms by which Oxy operates in ALI induced by LPS. The intraperitoneal injection of LPS was performed to establish the murine ALI model while LPS-treated alveolar epithelial cells were used to mimic the in vitro ALI model. Levels of lung injury, oxidative stress, and inflammatory response were detected to observe the potential effects of Oxy on ALI. Oxy treatment mitigated lung edema, inflammatory response, and oxidative stress in mouse response to LPS, apart from improving 7-day survival. Meanwhile, Oxy also increased the expression and activity of Sirt1. Intriguingly, Sirt1 deficiency or inhibition counteracted the protective effects of Oxy treatment in LPS-treated mice or LPS-treated alveolar epithelial cells by regulating the PTEN/AKT signaling pathway. These results demonstrated that Oxy could combat ALI in vivo and in vitro through inhibiting inflammatory response and oxidative stress in a Sirt1-dependent manner. Oxy owns the potential to be a promising candidate against ALI.
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Cellular Signal Transduction Pathways Involved in Acute Lung Injury Induced by Intestinal Ischemia-Reperfusion. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9985701. [PMID: 34188755 PMCID: PMC8195661 DOI: 10.1155/2021/9985701] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/14/2021] [Indexed: 01/13/2023]
Abstract
Intestinal ischemia-reperfusion (II/R) injury is a common type of tissue and organ injury, secondary to intestinal and mesenteric vascular diseases. II/R is characterized by a high incidence rate and mortality. In the II/R process, intestinal barrier function is impaired and bacterial translocation leads to excessive reactive oxygen species, inflammatory cytokine release, and even apoptosis. A large number of inflammatory mediators and oxidative factors are released into the circulation, leading to severe systemic inflammation and multiple organ failure of the lung, liver, and kidney. Acute lung injury (ALI) is the most common complication, which gradually develops into acute respiratory distress syndrome and is the main cause of its high mortality. This review summarizes the signal transduction pathways and key molecules in the pathophysiological process of ALI induced by II/R injury and provides a new therapeutic basis for further exploration of the molecular mechanisms of ALI induced by II/R injury. In particular, this article will focus on the biomarkers involved in II/R-induced ALI.
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10
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Krueger K, Boehme E, Klettner AK, Zille M. The potential of marine resources for retinal diseases: a systematic review of the molecular mechanisms. Crit Rev Food Sci Nutr 2021; 62:7518-7560. [PMID: 33970706 DOI: 10.1080/10408398.2021.1915242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We rely on vision more than on any other sense to obtain information about our environment. Hence, the loss or even impairment of vision profoundly affects our quality of life. Diet or food components have already demonstrated beneficial effects on the development of retinal diseases. Recently, there has been a growing interest in resources from marine animals and plants for the prevention of retinal diseases through nutrition. Especially fish intake and omega-3 fatty acids have already led to promising results, including associations with a reduced incidence of retinal diseases. However, the underlying molecular mechanisms are insufficiently explained. The aim of this review was to summarize the known mechanistic effects of marine resources on the pathophysiological processes in retinal diseases. We performed a systematic literature review following the PRISMA guidelines and identified 107 studies investigating marine resources in the context of retinal diseases. Of these, 46 studies described the underlying mechanisms including anti-inflammatory, antioxidant, antiangiogenic/vasoprotective, cytoprotective, metabolic, and retinal function effects, which we critically summarize. We further discuss perspectives on the use of marine resources for human nutrition to prevent retinal diseases with a particular focus on regulatory aspects, health claims, safety, and bioavailability.
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Affiliation(s)
- Kristin Krueger
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany
| | - Elke Boehme
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany
| | - Alexa Karina Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Quincke Research Center, Kiel, Germany
| | - Marietta Zille
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany.,Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
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11
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Yang Y, Li L. Depleting microRNA-146a-3p attenuates lipopolysaccharide-induced acute lung injury via up-regulating SIRT1 and mediating NF-κB pathway. J Drug Target 2021; 29:420-429. [PMID: 33185125 DOI: 10.1080/1061186x.2020.1850738] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The role of microRNAs (miRs) in acute lung injury (ALI) has been discussed. This study is to uncover the effects of miR-146a-3p/Sirtuin-1 (SIRT1)/Nuclear factor-kappa B (NF-κB) axis on ALI. METHODS Human normal lung epithelial cell line BEAS-2B was exposed to lipopolysaccharide (LPS) to establish an in vitro model of ALI. NF-κB expression, cell activity, apoptosis, inflammatory factors, oxidative stress indices were detected in LPS-induced BEAS-2B cells after miR-146a-3p was down-regulated or SIRT1 was up-regulated. ALI rat model was established and the NF-κB expression, wet/dry weight (W/D) ratio, pathological changes, pneumonocyte apoptosis, inflammatory factors, oxidative stress indices were detected in ALI rats after miR-146a-3p was down-regulated or SIRT1 was up-regulated. The target relationship between miR-146a-3p and SIRT1 was confirmed. RESULTS Reduced SIRT1 and raised miR-146a-3p were found in LPS-induced BEAS-2B cells and ALI rats. SIRT1-overexpressing or miR-146a-3p-underexpressing up-regulated NF-κB expression, promoted viability and inhibited apoptosis of LPS-induced BEAS-2B cells in vitro, and increased NF-κB expression, down-regulated the W/D ratio, attenuated pathological changes, suppressed apoptosis, and alleviated inflammatory response and oxidative stress in the lung of ALI rats. MiR-146a-3p directly binds to the 3'UTR of SIRT1 mRNA. CONCLUSION Depleting miR-146a-3p improves ALI through up-regulating SIRT1 and mediating NF-κB pathway.
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Affiliation(s)
- Yuxia Yang
- Department of Emergency Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Li Li
- Department of Emergency Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Wang Y, Liu YJ, Xu DF, Zhang H, Xu CF, Mao YF, Lv Z, Zhu XY, Jiang L. DRD1 downregulation contributes to mechanical stretch-induced lung endothelial barrier dysfunction. Am J Cancer Res 2021; 11:2505-2521. [PMID: 33456556 PMCID: PMC7806475 DOI: 10.7150/thno.46192] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 12/05/2020] [Indexed: 01/11/2023] Open
Abstract
Rationale: The lung-protective effects of dopamine and its role in the pathology of ventilator-induced lung injury (VILI) are emerging. However, the underlying mechanisms are still largely unknown. Objective: To investigate the contribution of dopamine receptor dysregulation in the pathogenesis of VILI and therapeutic potential of dopamine D1 receptor (DRD1) agonist in VILI. Methods: The role of dopamine receptors in mechanical stretch-induced endothelial barrier dysfunction and lung injury was studied in DRD1 knockout mice, in isolated mouse lung vascular endothelial cells (MLVECs), and in lung samples from patients who underwent pulmonary lobectomy with mechanical ventilation for different time periods. Measurements and Main Results: DRD1 was downregulated in both surgical patients and mice exposed to mechanical ventilation. Prophylactic administration of dopamine or DRD1 agonist attenuated mechanical stretch-induced lung endothelial barrier dysfunction and lung injury. By contrast, pulmonary knockdown or global knockout of DRD1 exacerbated these effects. Prophylactic administration of dopamine attenuated mechanical stretch-induced α-tubulin deacetylation and subsequent endothelial hyperpermeability through DRD1 signaling. We identified that cyclic stretch-induced glycogen-synthase-kinase-3β activation led to phosphorylation and activation of histone deacetylase 6 (HDAC6), which resulted in deacetylation of α-tubulin. Upon activation, DRD1 signaling attenuated mechanical stretch-induced α-tubulin deacetylation and subsequent lung endothelial barrier dysfunction through cAMP/exchange protein activated by cAMP (EPAC)-mediated inactivation of HDAC6. Conclusions: This work identifies a novel protective role for DRD1 against mechanical stretch-induced lung endothelial barrier dysfunction and lung injury. Further study of the mechanisms involving DRD1 in the regulation of microtubule stability and interference with DRD1/cAMP/EPAC/HDAC6 signaling may provide insight into therapeutic approaches for VILI.
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Nishida K, Watanabe H, Miyahisa M, Hiramoto Y, Nosaki H, Fujimura R, Maeda H, Otagiri M, Maruyama T. Systemic and sustained thioredoxin analogue prevents acute kidney injury and its-associated distant organ damage in renal ischemia reperfusion injury mice. Sci Rep 2020; 10:20635. [PMID: 33244034 PMCID: PMC7691343 DOI: 10.1038/s41598-020-75025-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 02/27/2019] [Indexed: 12/19/2022] Open
Abstract
The mortality of patients with acute kidney injury (AKI) remains high due to AKI associated-lung injury. An effective strategy for preventing both AKI and AKI-associated lung injury is urgently needed. Thioredoxin-1 (Trx) is a redox-active protein that possesses anti-oxidative, anti-apoptotic and anti-inflammatory properties including modulation of macrophage migration inhibitory factor (MIF), but its short half-life limits its clinical application. Therefore, we examined the preventive effect of a long-acting Trx, which is a fusion protein of albumin and Trx (HSA-Trx), against AKI and AKI-associated lung injury. Recombinant HSA-Trx was expressed using a Pichia expression system. AKI-induced lung injury mice were generated by bilateral renal ischemia reperfusion injury (IRI). HSA-Trx administration attenuated renal IRI and its-associated lung injury. Both renal and pulmonary oxidative stress were suppressed by HSA-Trx. Moreover, HSA-Trx inhibited elevations of plasma IL-6 and TNF-α level, and suppressed IL-6–CXCL1/2-mediated neutrophil infiltration into lung and TNF-α-mediated pulmonary apoptosis. Additionally, HSA-Trx suppressed renal IRI-induced MIF expression in kidney and lung. Administration of HSA-Trx resulted in a significant increase in the survival rate of renal IRI mice. Collectively, HSA-Trx could have therapeutic utility in preventing both AKI and AKI-associated lung injury as a consequence of its systemic and sustained multiple biological action.
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Affiliation(s)
- Kento Nishida
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hiroshi Watanabe
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
| | - Masako Miyahisa
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Yuto Hiramoto
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hiroto Nosaki
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Rui Fujimura
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hitoshi Maeda
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.,Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Kumamoto, 860-0082, Japan
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
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Zhang JY, Hu J, Kim IH. Supplemental effects of coated omega-3 polyunsaturated fatty acids to basal diet on improving growth performance, nutrients digestibility, fecal lactobacillus count and fecal score in weaning pigs. Anim Feed Sci Technol 2020. [DOI: 10.1016/j.anifeedsci.2020.114547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Huang LM, Hu Q, Huang X, Qian Y, Lai XH. Preconditioning rats with three lipid emulsions prior to acute lung injury affects cytokine production and cell apoptosis in the lung and liver. Lipids Health Dis 2020; 19:19. [PMID: 32024527 PMCID: PMC7003422 DOI: 10.1186/s12944-019-1137-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Critically ill patients are at higher risk having acute lung injury (ALI) and more often in need of parenteral nutrition. We sought to study whether preconditioning with representative of lipid emulsions for one week could benefit rats from ALI. METHODS Using a lipopolysaccharide (LPS)-induced ALI rat model and techniques such as polymerase chain reaction (PCR), enzyme-linked immunosorbent assay (ELISA), and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining. RESULTS PGE2 production in the serum was highest in the LPS group, followed with Intralipid group, and the PGE2 level of these two groups was significantly (P < 0.05) higher than the rest. Intralipid conditioning caused significantly less production of LTB4 than the LPS, Clinoleic, or Omegaven group. In contrast to Intralipid, rats pretreated with Clinoleic or Omegaven significantly decreased their production of inflammatory mediators (IL-1 β, IL-6 and TNF-α), had less apoptosis in the lung tissues, and Omegaven greatly improved liver function upon lipopolysaccharide (LPS) challenge. CONCLUSIONS In an ALI setting, preconditioning with Omegaven or Clinoleic was better than Intralipid in decreasing the intensity of the cytokine storm and apoptosis caused by LPS challenge, and Omegaven in addition had the potential to improve liver function. The results from the present study set a basis for further investigation of the molecular mechanisms of ALI, including the up- and downstream pathways of proinflammatory factor production, in search of (small) molecules intervening with the pathogenesis of ALI in order to translate relevant research findings into clinical benefit for patients with ALI. The use of Omegaven or Clinoleic, particularly in patients with ALI, is still characterized by uncertainty due to a lack of relevant studies. Future investigations must specifically focus on the route of administration and mode of application (enteral vs. parenteral/bolus vs. continuous), determining an optimal dose of Omegaven or Clinoleic, and the defining the best timepoint(s) for administration. Critically ill patients are at higher risk having acute lung injury (ALI) and more often in need of parenteral nutrition. The effect of lipid emulsion via parenteral nutrition on liver function was first time evaluated in rats in an ALI setting. The comparison of three forms of lipid emulsion in a rat model of acute lung injury was first time studied. The fish oil-based lipid emulsion decrease in PGE 2 and increase in LTB 4 was first time reported.
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Affiliation(s)
- Li-Mi Huang
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Qingqing Hu
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Xiaoxia Huang
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Yan Qian
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China.
| | - Xin-He Lai
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China.
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Dai D, Chen J, Jin M, Zhang Z, Chen WH, Xu F. Dynamic metabolomic analysis of intestinal ischemia-reperfusion injury in rats. IUBMB Life 2020; 72:1001-1011. [PMID: 31999398 DOI: 10.1002/iub.2238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/10/2020] [Indexed: 01/09/2023]
Abstract
Intestinal ischemia-reperfusion injury (IIR) is a life-threatening abdominal emergency. Compared to traditional steady-state works, we profiled the blood of rats over 72 hr (15 time points) and examined dynamic changes in molecular pathways during IIR. Using a series of methods designed for dynamic datasets analysis (batch effects corrections, metabolomics data reduction, and different features selection), we identified 39 significant different metabolites and discovered the trends of these molecules. Four main patterns were uncovered by a longitudinal pattern recognition method. Furthermore, pathway networks were explored to uncover the possible mechanisms of IIR. We found that IIR is a complex physiological process involved in multiple pathways, such as biosynthesis of amino acids, 2-oxocarboxylic acid metabolism, arginine-related metabolism, and glutathione metabolism. Among which, metabolites related with phenylalanine tyrosine and tryptophan metabolism reached a peak during the early stage of reperfusion, while molecules in biosynthesis of unsaturated fatty acids metabolism declined. Our work provides a feasible scheme to understand dynamic molecule variation and will provide new explications about the effect of intestinal ischemia reperfusion from a dynamic perspective.
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Affiliation(s)
- Die Dai
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Hubei Key Laboratory of Bioinformatics and Molecular-Imaging, Department of Bioinformatics and Systems Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jingchao Chen
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Hubei Key Laboratory of Bioinformatics and Molecular-Imaging, Department of Bioinformatics and Systems Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Menglu Jin
- College of Life Science, Henan Normal University, Xinxiang, China
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
| | - Wei-Hua Chen
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Hubei Key Laboratory of Bioinformatics and Molecular-Imaging, Department of Bioinformatics and Systems Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.,College of Life Science, Henan Normal University, Xinxiang, China
| | - Fengguo Xu
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
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Kubo Y, Sugiyama S, Takachu R, Tanaka M, Ikeya M, Sugiura T, Kobori K, Kobori M. Association between serum n-3 polyunsaturated fatty acids and quadriceps weakness immediately after total knee arthroplasty. PLoS One 2020; 15:e0228460. [PMID: 31995616 PMCID: PMC6988925 DOI: 10.1371/journal.pone.0228460] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/15/2020] [Indexed: 12/12/2022] Open
Abstract
Objectives Quadriceps weakness (QW) following total knee arthroplasty (TKA) can be elicited by tourniquet-induced ischaemia reperfusion (IR), which causes a vigorous acute inflammatory response. Dietary n-3 polyunsaturated fatty acids (PUFA) are important determinants of organ and tissue protection from IR. This study aimed to examine the association between serum n-3 PUFA levels and QW, knee pain, and knee swelling immediately after TKA. Methods A total of 32 patients who underwent unilateral TKA participated in this prospective study. On Postoperative Day 1, serum n-3 PUFA (eicosapentaenoic acid and docosahexaenoic acid) levels were measured. Preoperatively and on Postoperative Day 4, quadriceps strength, knee pain during quadriceps testing, and knee circumference were measured. QW, knee pain, and knee swelling were defined as changes in quadriceps strength, knee pain during quadriceps testing, and knee circumference, respectively, between the preoperative to the postoperative measurement. Results Mean serum n-3 PUFA levels were 192 μg/mL (standard deviation, 58 μg/mL) on Postoperative Day 1. All measured variables changed significantly between the preoperative and the postoperative measurement time-points (P <0.01). Quadriceps strength decreased from 1.2 to 0.4 Nm/kg (QW = −65%). Knee pain during quadriceps testing increased from 1.1 to 6.0 (knee pain = 4.0). Knee circumference increased from 40 to 44 cm (knee swelling = 10%). Multivariate analysis showed that lower serum n-3 PUFA levels were independently associated with an increased QW after adjusting for the Kellgren-Lawrence grade and the tourniquet time (P = 0.04). No significant relationship was observed between serum n-3 PUFA levels and knee pain or knee swelling. Conclusion Higher serum n-3 PUFA are independently associated with a lower increase in the QW immediately after TKA.
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Affiliation(s)
- Yusuke Kubo
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
- * E-mail:
| | - Shuhei Sugiyama
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Rie Takachu
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Maki Tanaka
- Department of Rehabilitation Sciences, Seirei Christopher University, Mikataharachou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Masae Ikeya
- Department of Health and Nutrition Sciences, Tokoha University, Miyakodachou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Takeshi Sugiura
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Kaori Kobori
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
| | - Makoto Kobori
- Department of Rehabilitation, Kobori Orthopaedic Clinic, Nearaichou, Kita-ku, Hamamatsu City, Shizuoka, Japan
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Peng J, Xiong J, Cui C, Huang N, Zhang H, Wu X, Yang Y, Zhou Y, Wei H, Peng J. Maternal Eicosapentaenoic Acid Feeding Decreases Placental Lipid Deposition and Improves the Homeostasis of Oxidative Stress Through a Sirtuin-1 (SIRT1) Independent Manner. Mol Nutr Food Res 2019; 63:e1900343. [PMID: 31408587 DOI: 10.1002/mnfr.201900343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 08/01/2019] [Indexed: 12/24/2022]
Abstract
SCOPE Maternal obesity has been associated with increased placental lipotoxicity and impaired mitochondrial function. Sirtuin-1 (SIRT1) is an important regulator of both lipid metabolism and mitochondrial biogenesis. The present study aims to determine whether supplementation of the maternal diet with eicosapentaenoic acid (EPA) can decrease placental lipid deposition and improve antioxidant ability, in a SIRT1-dependent manner. METHODS AND RESULTS Pregnant SIRT1+/- mice (mated with male SIRT1+/- ) are fed a high-fat diet consisting of 60% of the kcal from fat, or an equienergy EPA diet for 18.5 d. Supplementation with EPA significantly changes maternal plasma, placental and fetal fatty acid composition, and decreases placental and fetal lipid content. In addition, placental antioxidant capacity and lipid peroxidation products are increased, placental uncoupling protein 1 (UCP1) and PPARγ coactivator-1 α (PGC1α) expression are activated, and mitochondrial swelling decreases. While SIRT1 deficiency has little effect on placental fatty acid composition and lipid content, decreased fetal lipid deposition is observed, placental PGC1α expression decreases, mitochondrial swelling increases, and placental total superoxide dismutase (T-SOD) activity increases. Both EPA and SIRT1 have no effect on BODIPY-FL-C16 uptake. Interestingly, there is no significant interaction between diet and genotype. CONCLUSION Maternal EPA feeding decreases placental lipid deposition and improves placental oxidative stress homeostasis independent of SIRT1.
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Affiliation(s)
- Jie Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Jia Xiong
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Chenbin Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Ningning Huang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Hong Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - XiaoYu Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yang Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yuanfei Zhou
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, P. R. China
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Irisin alleviates pulmonary epithelial barrier dysfunction in sepsis-induced acute lung injury via activation of AMPK/SIRT1 pathways. Biomed Pharmacother 2019; 118:109363. [PMID: 31545277 DOI: 10.1016/j.biopha.2019.109363] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/04/2019] [Accepted: 08/14/2019] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Alveolar epithelial barrier dysfunction in response to inflammatory reaction contributes to pulmonary edema in acute lung injury(ALI).Irisin,a newly-found myokine,exerts the anti-inflammatory effects. This study aims to investigate the protective effects of irisin on lipopolysaccharide (LPS)-induced ALIin vivo and in vitro, and to explore its underlying mechanism. METHODS Male SD rats and A549 cells were divided into 4 groups: control group, LPS group, Irisin pretreated group, and Irisin/Compound C(a special inhibitor of AMPK)-treated group. The ALI model was established by intravenous injection of LPS in rats, and LPS challenge in A549 cells. Pulmonary specimens were harvested for microscopic examination of the pathological changes, and the expression of AMPK,SIRT1,NF-κB, p66Shc and caspase-3 in lung tissues. The pulmonary permeability were examined by wet/dry lung weight ratio(W/D) and lung permeability index(LPI). The apoptotic index, and the expression of tumor necrosis factor-α(TNF-α), interleukin-1β(IL-1β), monocyte chemoattractant activating protein-1 (MCP-1), tight junctions (occludin,ZO-1) were determined both in lung tissue and A549 cells. RESULTS Irisin alleviated lung histological changes and decreased pulmonary microvascular permeability in LPS-induced rats. Irisin up-regulated the expression of occludin, ZO-1,AMPK,SIRT1, down-regulated the expression of TNF-α,IL-1β,MCP-1,NF-κB, p66Shc caspase-3, and decreased the apoptotic index in LPS-induced rats and A549 cells. All these protective effects of irisin could be reversed by Compound C. CONCLUSION Irisin improved LPS-induced alveolar epithelial barrier dysfunction via suppressing inflammation and apoptosis, and this protective effect might be mediated by activating AMPK/SIRT1 pathways.
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20
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Lewkowicz N, Piątek P, Namiecińska M, Domowicz M, Bonikowski R, Szemraj J, Przygodzka P, Stasiołek M, Lewkowicz P. Naturally Occurring Nervonic Acid Ester Improves Myelin Synthesis by Human Oligodendrocytes. Cells 2019; 8:cells8080786. [PMID: 31362382 PMCID: PMC6721595 DOI: 10.3390/cells8080786] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/18/2019] [Accepted: 07/26/2019] [Indexed: 12/19/2022] Open
Abstract
The dysfunction of oligodendrocytes (OLs) is regarded as one of the major causes of inefficient remyelination in multiple sclerosis, resulting gradually in disease progression. Oligodendrocytes are derived from oligodendrocyte progenitor cells (OPCs), which populate the adult central nervous system, but their physiological capability to myelin synthesis is limited. The low intake of essential lipids for sphingomyelin synthesis in the human diet may account for increased demyelination and the reduced efficiency of the remyelination process. In our study on lipid profiling in an experimental autoimmune encephalomyelitis brain, we revealed that during acute inflammation, nervonic acid synthesis is silenced, which is the effect of shifting the lipid metabolism pathway of common substrates into proinflammatory arachidonic acid production. In the experiments on the human model of maturating oligodendrocyte precursor cells (hOPCs) in vitro, we demonstrated that fish oil mixture (FOM) affected the function of hOPCs, resulting in the improved synthesis of myelin basic protein, myelin oligodendrocyte glycoprotein, and proteolipid protein, as well as sphingomyelin. Additionally, FOM reduces proinflammatory cytokines and chemokines, and enhances fibroblast growth factor 2 (FGF2) and vascular endothelial growth factor (VEGF) synthesis by hOPCs was also demonstrated. Based on these observations, we propose that the intake of FOM rich in the nervonic acid ester may improve OL function, affecting OPC maturation and limiting inflammation.
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Affiliation(s)
- Natalia Lewkowicz
- Department of Periodontology and Oral Diseases, Medical University of Lodz, 92-213 Lodz, Poland
| | - Paweł Piątek
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Pomorska Str. 251, 92-213 Lodz, Poland
| | - Magdalena Namiecińska
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Pomorska Str. 251, 92-213 Lodz, Poland
| | - Małgorzata Domowicz
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Pomorska Str. 251, 92-213 Lodz, Poland
| | - Radosław Bonikowski
- Faculty of Biotechnology and Food Science, Lodz University of Technology, 90-924 Lodz, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland
| | - Patrycja Przygodzka
- Institute of Medical Biology, Polish Academy of Sciences, 93-232 Lodz, Poland
| | - Mariusz Stasiołek
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Pomorska Str. 251, 92-213 Lodz, Poland
| | - Przemysław Lewkowicz
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Pomorska Str. 251, 92-213 Lodz, Poland.
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Peng J, Zhou Y, Hong Z, Wu Y, Cai A, Xia M, Deng Z, Yang Y, Song T, Xiong J, Wei H, Peng J. Maternal eicosapentaenoic acid feeding promotes placental angiogenesis through a Sirtuin-1 independent inflammatory pathway. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1864:147-157. [PMID: 30445165 DOI: 10.1016/j.bbalip.2018.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/21/2018] [Accepted: 11/11/2018] [Indexed: 12/13/2022]
Abstract
Maternal overnutrition or obesity is associated with a wide range of metabolic disorders and may impair placental angiogenesis. Previous studies have shown that n-3 polyunsaturated fatty acids (PUFA) promote fetal growth in both rodents and humans. Whether n-3 PUFA impacts on placental angiogenesis in vivo remains unclear. Sirtuin-1 (SIRT1) is a protein deacetylase that plays an important role in regulating inflammation and endothelial function. Little information is available on a putative role of SIRT1 in placental angiogenesis. The goal of this study was to examine the capability of eicosapentaenoic acid (EPA) to regulate angiogenesis and inflammation in SIRT1-deficient placentas. In the present study, male and female SIRT1+/- mice were mated overnight, then primiparous SIRT1+/- mice were fed a 60% kcal HFD or equienergy EPA diet (4.4% EPA-ethyl ester). We found that the EPA diet significantly improved maternal insulin sensitivity and decreased plasma levels of inflammatory factors IL-6 and TNFα concentration. Moreover, EPA treatment promoted fetus growth and placental angiogenesis, and inhibited the hypoxia inducible factor-1α(HIF1α) pathway. SIRT1 deficiency exhibited an opposite effect, leading to decrease in placental angiogenesis and fetal weight. No significant effect was observed between diet and genotype. Here, we reported for the first time that EPA treatment increased the expression of placental inflammatory genes and promoted translocation of NFκB into the nucleus. On the contrary, SIRT1-deficient placentas showed a decreased inflammation state. Together, these data demonstrate a previously unknown role of EPA to promote placental angiogenesis through a SIRT1 independent inflammatory pathway.
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Affiliation(s)
- Jie Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yuanfei Zhou
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zhang Hong
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yinghui Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Anle Cai
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Mao Xia
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zhao Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yang Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Tongxing Song
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jia Xiong
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China; The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, PR China.
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Shih JM, Shih YM, Hou YC, Pai MH, Yeh CL, Yeh SL. Effects of fish oil-based lipid emulsion on inflammation and kidney injury in mice subjected to unilateral hind limb ischemia/reperfusion. Cytokine 2018; 111:49-57. [DOI: 10.1016/j.cyto.2018.07.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/24/2018] [Accepted: 07/31/2018] [Indexed: 02/08/2023]
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Tan Z, Wang H, Sun J, Li M. Effects of propofol pretreatment on lung morphology and heme oxygenase-1 expression in oleic acid-induced acute lung injury in rats. Acta Cir Bras 2018; 33:250-258. [PMID: 29668779 DOI: 10.1590/s0102-865020180030000007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 02/28/2018] [Indexed: 03/16/2023] Open
Abstract
PURPOSE To investigate the effects of propofol pretreatment on lung morphology and heme oxygenase-1 expression in oleic acid -induced acute lung injury in rats. METHODS A total of 32 male Sprague-Dawley rats (250-300g) were randomly divided into the following four groups (n=8/group): group C, group OA, group OA+PR, and group OA+IX to compare related parameter changes. RESULTS PaO2, PCO2, and PaO2/FiO2 were significantly different among the four treatment groups (P<0.05 or P<0.01). Lung wet/dry weight ratio and HO-1 protein expression also significantly differed among the groups (P<0.01). Immunohistochemistry showed that the expression of HO-1 in group OA+PR was stronger than those in groups OA, OA+IX, and C. Light microscopy revealed that pathological changes in lung tissues in group OA+PR were milder than those in group OA and group OA+IX. Electron microscopy showed that alveolar type II epithelial cell ultrastructure in group OA was relatively irregular with cell degeneration and disintegration and cytoplasmic lamellar bodies were vacuolized. Changes in group OA+PR were milder than those in group OA; however, they were more severe in group OA+IX than in group OA. CONCLUSION Propofol significantly increases the expression of HO-1 in the lung tissueand prevents changes in lung morphology due to ALI in rats.
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Affiliation(s)
- Zelong Tan
- Department of Anesthesiology, Tai'an Central Hospital, Tai'an, Shandong, China
| | - Huaizhou Wang
- Department of Anesthesiology, Yantai Stomatological Hospital, Yantai, Shandong, China
| | - Jing Sun
- Tai'an Maternal and Child Health Hospital, Tai'an, Shandong, China
| | - Mingsheng Li
- Department of Anesthesiology, Tai'an Central Hospital, Tai'an, Shandong, China
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Jing HR, Luo FW, Liu XM, Tian XF, Zhou Y. Fish oil alleviates liver injury induced by intestinal ischemia/reperfusion via AMPK/SIRT-1/autophagy pathway. World J Gastroenterol 2018; 24:833-843. [PMID: 29467553 PMCID: PMC5807941 DOI: 10.3748/wjg.v24.i7.833] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 12/25/2017] [Accepted: 01/15/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate whether fish oil (FO) can protect liver injury induced by intestinal ischemia/reperfusion (I/R) via the AMPK/SIRT-1/autophagy pathway.
METHODS Ischemia in Wistar rats was induced by superior mesenteric artery occlusion for 60 min and reperfusion for 240 min. One milliliter per day of FO emulsion or normal saline was administered by intraperitoneal injection for 5 consecutive days to each animal. Animals were sacrificed at the end of reperfusion. Blood and tissue samples were collected for analyses. AMPK, SIRT-1, and Beclin-1 expression was determined in lipopolysaccharide (LPS)-stimulated HepG2 cells with or without FO emulsion treatment.
RESULTS Intestinal I/R induced significant liver morphological changes and increased serum alanine aminotransferase and aspartate aminotransferase levels. Expression of p-AMPK/AMPK, SIRT-1, and autophagy markers was decreased whereas tumor necrosis factor-α (TNF-α) and malonaldehyde (MDA) were increased. FO emulsion blocked the changes of the above indicators effectively. Besides, in LPS-stimulated HepG2 cells, small interfering RNA (siRNA) targeting AMPK impaired the FO induced increase of p-AMPK, SIRT-1, and Beclin-1 and decrease of TNF-α and MDA. SIRT-1 siRNA impaired the increase of SIRT-1 and Beclin-1 and the decrease of TNF-α and MDA.
CONCLUSION Our study indicates that FO may protect the liver against intestinal I/R induced injury through the AMPK/SIRT-1/autophagy pathway.
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Affiliation(s)
- Hui-Rong Jing
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Fu-Wen Luo
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Xing-Ming Liu
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Xiao-Feng Tian
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Yun Zhou
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
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Singh I, Samuvel DJ, Choi S, Saxena N, Singh AK, Won J. Combination therapy of lovastatin and AMP-activated protein kinase activator improves mitochondrial and peroxisomal functions and clinical disease in experimental autoimmune encephalomyelitis model. Immunology 2018; 154:434-451. [PMID: 29331024 DOI: 10.1111/imm.12893] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 12/29/2017] [Indexed: 01/04/2023] Open
Abstract
Recent studies report that loss and dysfunction of mitochondria and peroxisomes contribute to the myelin and axonal damage in multiple sclerosis (MS). In this study, we investigated the efficacy of a combination of lovastatin and AMP-activated protein kinase (AMPK) activator (AICAR) on the loss and dysfunction of mitochondria and peroxisomes and myelin and axonal damage in spinal cords, relative to the clinical disease symptoms, using a mouse model of experimental autoimmune encephalomyelitis (EAE, a model for MS). We observed that lovastatin and AICAR treatments individually provided partial protection of mitochondria/peroxisomes and myelin/axons, and therefore partial attenuation of clinical disease in EAE mice. However, treatment of EAE mice with the lovastatin and AICAR combination provided greater protection of mitochondria/peroxisomes and myelin/axons, and greater improvement in clinical disease compared with individual drug treatments. In spinal cords of EAE mice, lovastatin-mediated inhibition of RhoA and AICAR-mediated activation of AMPK cooperatively enhanced the expression of the transcription factors and regulators (e.g. PPARα/β, SIRT-1, NRF-1, and TFAM) required for biogenesis and the functions of mitochondria (e.g. OXPHOS, MnSOD) and peroxisomes (e.g. PMP70 and catalase). In summary, these studies document that oral medication with a combination of lovastatin and AICAR, which are individually known to have immunomodulatory effects, provides potent protection and repair of inflammation-induced loss and dysfunction of mitochondria and peroxisomes as well as myelin and axonal abnormalities in EAE. As statins are known to provide protection in progressive MS (Phase II study), these studies support that supplementation statin treatment with an AMPK activator may provide greater efficacy against MS.
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Affiliation(s)
- Inderjit Singh
- Charles P. Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA.,Research Service, Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC, USA
| | - Devadoss J Samuvel
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Seungho Choi
- Charles P. Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Nishant Saxena
- Charles P. Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Avtar K Singh
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA.,Pathology and Laboratory Medicine Service, Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC, USA
| | - Jeseong Won
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA
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High Endogenous Accumulation of ω-3 Polyunsaturated Fatty Acids Protect against Ischemia-Reperfusion Renal Injury through AMPK-Mediated Autophagy in Fat-1 Mice. Int J Mol Sci 2017; 18:ijms18102081. [PMID: 28974016 PMCID: PMC5666763 DOI: 10.3390/ijms18102081] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/14/2017] [Accepted: 09/27/2017] [Indexed: 12/11/2022] Open
Abstract
Regulated autophagy is involved in the repair of renal ischemia-reperfusion injury (IRI). Fat-1 transgenic mice produce ω3-Polyunsaturated fatty acids (ω3-PUFAs) from ω6-Polyunsaturated fatty acids (ω6-PUFAs) without a dietary ω3-PUFAs supplement, leading to a high accumulation of omega-3 in various tissues. ω3-PUFAs show protective effects against various renal injuries and it has recently been reported that ω3-PUFAs regulate autophagy. We assessed whether ω3-PUFAs attenuated IR-induced acute kidney injury (AKI) and evaluated its associated mechanisms. C57Bl/6 background fat-1 mice and wild-type mice (wt) were divided into four groups: wt sham (n = 10), fat-1 sham (n = 10), wt IRI (reperfusion 35 min after clamping both the renal artery and vein; n = 15), and fat-1 IRI (n = 15). Kidneys and blood were harvested 24 h after IRI and renal histological and molecular data were collected. The kidneys of fat-1 mice showed better renal cell survival, renal function, and pathological damage than those of wt mice after IRI. In addition, fat-1 mice showed less oxidative stress and autophagy impairment; greater amounts of microtubule-associated protein 1A/1B-light chain 3 (LC3)-II, Beclin-1, and Atg7; lower amounts of p62; and, higher levels of renal cathepsin D and ATP6E than wt kidneys. They also showed more adenosine monophosphate-activated protein kinase (AMPK) activation, which resulted in the inhibition of phosphorylation of the mammalian target of rapamycin (mTOR). Collectively, ω3-PUFAs in fat-1 mice contributed to AMPK mediated autophagy activation, leading to a renoprotective response.
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27
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Di Lisa F, Giorgio M, Ferdinandy P, Schulz R. New aspects of p66Shc in ischaemia reperfusion injury and other cardiovascular diseases. Br J Pharmacol 2017; 174:1690-1703. [PMID: 26990284 PMCID: PMC5446581 DOI: 10.1111/bph.13478] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/29/2016] [Accepted: 03/09/2016] [Indexed: 12/13/2022] Open
Abstract
Although reactive oxygen species (ROS) act as crucial factors in the onset and progression of a wide array of diseases, they are also involved in numerous signalling pathways related to cell metabolism, growth and survival. ROS are produced at various cellular sites, and it is generally agreed that mitochondria generate the largest amount, especially those in cardiomyocytes. However, the identification of the most relevant sites within mitochondria, the interaction among the various sources, and the events responsible for the increase in ROS formation under pathological conditions are still highly debated, and far from being clarified. Here, we review the information linking the adaptor protein p66Shc with cardiac injury induced by ischaemia and reperfusion (I/R), including the contribution of risk factors, such as metabolic syndrome and ageing. In response to several stimuli, p66Shc migrates into mitochondria where it catalyses electron transfer from cytochrome c to oxygen resulting in hydrogen peroxide formation. Deletion of p66Shc has been shown to reduce I/R injury as well as vascular abnormalities associated with diabetes and ageing. However, p66Shc-induced ROS formation is also involved in insulin signalling and might contribute to self-endogenous defenses against mild I/R injury. In addition to its role in physiological and pathological conditions, we discuss compounds and conditions that can modulate the expression and activity of p66Shc. LINKED ARTICLES This article is part of a themed section on Redox Biology and Oxidative Stress in Health and Disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.12/issuetoc.
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Affiliation(s)
- Fabio Di Lisa
- Department of Biomedical Sciences and CNR Neuroscience InstituteUniversity of PadovaPadovaItaly
| | - Marco Giorgio
- Department of Experimental OncologyInstitute of OncologyMilanItaly
| | - Peter Ferdinandy
- Department of Pharmacology and PharmacotherapySemmelweis UniversityBudapestHungary
- Pharmahungary GroupSzegedHungary
| | - Rainer Schulz
- Institut für PhysiologieJustus‐Liebig Universität GiessenGiessenGermany
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Wang X, Liu C, Wang G. Propofol Protects Rats and Human Alveolar Epithelial Cells Against Lipopolysaccharide-Induced Acute Lung Injury via Inhibiting HMGB1 Expression. Inflammation 2017; 39:1004-16. [PMID: 26956470 DOI: 10.1007/s10753-016-0330-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
High-mobility group box 1 (HMGB1) plays a key role in the development of acute lung injury (ALI). Propofol, a general anesthetic with anti-inflammatory properties, has been suggested to be able to modulate lipopolysaccharide (LPS)-induced ALI. In this study, we investigated the effects of propofol on the expression of HMGB1 in a rat model of LPS-induced ALI. Rats underwent intraperitoneal injection of LPS to mimic sepsis-induced ALI. Propofol bolus (1, 5, or 10 mg/kg) was infused continuously 30 min after LPS administration, followed by infusion at 5 mg/(kg · h) through the left femoral vein cannula. LPS increased wet to dry weight ratio and myeloperoxidase activity in lung tissues and caused the elevation of total protein and cells, neutrophils, macrophages, and neutrophils in bronchoalveolar lavage fluid (BALF). Moreover, HMGB1 and other cytokine levels were increased in BALF and lung tissues and pathological changes of lung tissues were excessively aggravated in rats after LPS administration. Propofol inhibited all the above effects. It also inhibited LPS-induced toll-like receptor (TLR)2/4 protein upexpression and NF-κB activation in lung tissues and human alveolar epithelial cells. Propofol protects rats and human alveolar epithelial cells against HMGB1 expression in a rat model of LPS-induced ALI. These effects may partially result from reductions in TLR2/4 and NF-κB activation.
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Affiliation(s)
- Xiaoyan Wang
- Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan, Shandong, China
| | - Chengxiao Liu
- Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan, Shandong, China
| | - Gongming Wang
- Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan, Shandong, China.
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29
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Ma L, Zhou P, Neu J, Lin HC. Potential Nutrients for Preventing or Treating Bronchopulmonary Dysplasia. Paediatr Respir Rev 2017; 22:83-88. [PMID: 27843119 DOI: 10.1016/j.prrv.2016.08.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 08/01/2016] [Accepted: 08/29/2016] [Indexed: 10/21/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a frequent complication occurring in extremely preterm infants. Despite recent advances in newborn medicine, the incidence of BPD does not appear to have changed markedly, and specific treatments and prevention strategies are still lacking. Nutrition plays an important role in normal lung development and maturation. Malnutrition may delay somatic growth and new alveoli development, thus aggravating pulmonary injury involved in the pathogenesis of BPD. However, few nutrients have been investigated for their potential to mitigate the pathogenesis of BPD. In this article, we reviewed the recent progress in research on potential nutrients useful for the prevention or treatment of BPD, including glutamine, cysteine and N-acetylcysteine, L-arginine and L-citrulline, long chain polyunsaturated fatty acids (LCPUFAs), inositol, selenium, and some antioxidant vitamins including vitamin A. Current evidence shows that vitamin A and LCPUFA can prevent BPD, and that L-citrulline might provide a new method to treat chronic pulmonary hypertension associated with BPD in premature infants. The effects of other nutrients on BPD prevention need to be further studied.
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Affiliation(s)
- Liya Ma
- Department of Neonatology, Shenzhen Baoan Maternal and Child Health Hospital, China.
| | - Ping Zhou
- Department of Neonatology, Shenzhen Baoan Maternal and Child Health Hospital, China.
| | - Josef Neu
- Department of Pediatrics, University of Florida, U.S.A..
| | - Hung-Chih Lin
- Department of Pediatrics, Children's Hospital and School of Chinese Medicine, China Medical University, Taichung, Taiwan.
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Pretreatment with Fish Oil-Based Lipid Emulsion Modulates Muscle Leukocyte Chemotaxis in Murine Model of Sublethal Lower Limb Ischemia. Mediators Inflamm 2017; 2017:4929346. [PMID: 28182087 PMCID: PMC5274663 DOI: 10.1155/2017/4929346] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 12/22/2016] [Indexed: 01/02/2023] Open
Abstract
This study investigated the effects of a fish oil- (FO-) based lipid emulsion on muscle leukocyte chemotaxis and inflammatory responses in a murine model of limb ischemia-reperfusion (IR) injury. Mice were assigned randomly to 1 sham (sham) group, 2 ischemic groups, and 2 IR groups. The sham group did not undergo the ischemic procedure. The mice assigned to the ischemic or IR groups were pretreated intraperitoneally with either saline or FO-based lipid emulsion for 3 consecutive days. The IR procedure was induced by applying a 4.5 oz orthodontic rubber band to the left thigh above the greater trochanter for 120 min and then cutting the band to allow reperfusion. The ischemic groups were sacrificed immediately while the IR groups were sacrificed 24 h after reperfusion. Blood, IR-injured gastrocnemius, and lung tissues were collected for analysis. The results showed that FO pretreatment suppressed the local and systemic expression of several IR-induced proinflammatory mediators. Also, the FO-pretreated group had lower blood Ly6ChiCCR2hi monocyte percentage and muscle M1/M2 ratio than the saline group at 24 h after reperfusion. These findings suggest that FO pretreatment may have a protective role in limb IR injury by modulating the expression of proinflammatory mediators and regulating the polarization of macrophage.
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Luo Y, Che W, Zhao M. Ulinastatin post-treatment attenuates lipopolysaccharide-induced acute lung injury in rats and human alveolar epithelial cells. Int J Mol Med 2016; 39:297-306. [PMID: 27959396 PMCID: PMC5358699 DOI: 10.3892/ijmm.2016.2828] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 11/16/2016] [Indexed: 01/11/2023] Open
Abstract
Ulinastatin (UTI), a serine protease inhibitor, possesses anti-inflammatory properties and has been suggested to modulate lipopolysaccharide (LPS)-induced acute lung injury (ALI). High-mobility group box 1 (HMGB1), a nuclear DNA-binding protein, plays a key role in the development of ALI. The aim of this study was to investigate whether UTI attenuates ALI through the inhibition of HMGB1 expression and to elucidate the underlying molecular mechanisms. ALI was induced in male rats by the intratracheal instillation of LPS (5 mg/kg). UTI was administered intraperitoneally 30 min following exposure to LPS. A549 alveolar epithelial cells were incubated with LPS in the presence or absence of UTI. An enzyme-linked immunosorbent assay was used to detect the levels of inflammatory cytokines. Western blot analysis was performed to detect the changes in the expression levels of Toll-like receptor 2/4 (TLR2/4) and the activation of nuclear factor-κB (NF-κB). The results revealed that UTI significantly protected the animals from LPS-induced ALI, as evidenced by the decrease in the lung wet to dry weight ratio, total cells, neutrophils, macrophages and myeloperoxidase activity, associated with reduced lung histological damage. We also found that UTI post-treatment markedly inhibited the release of HMGB1 and other pro-inflammatory cytokines. Furthermore, UTI significantly inhibited the LPS-induced increase in TLR2/4 protein expression and NF-κB activation in lung tissues. In vitro, UTI markedly inhibited the expression of TLR2/4 and the activation of NF-κB in LPS-stimulated A549 alveolar epithelial cells. The findings of our study indicate that UTI attenuates LPS-induced ALI through the inhibition of HMGB1 expression in rats. These benefits are associated with the inhibition of the activation of the TLR2/4-NF-κB pathway by UTI.
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Affiliation(s)
- Yunpeng Luo
- Department of Intensive Care Unit, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Wen Che
- Department of Intensive Care Unit, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Mingyan Zhao
- Department of Intensive Care Unit, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Abstract
AbstractThree areas in the brain continuously generate new neurons throughout life: the subventricular zone lining the lateral ventricles, the dentate gyrus in the hippocampus and the median eminence in the hypothalamus. These areas harbour neural stem cells, which contribute to neural repair by generating daughter cells that then become functional neurons or glia. Impaired neurogenesis leads to detrimental consequences, such as depression, decline of cognitive abilities and obesity. Adult neurogenesis is a versatile process that can be modulated either positively or negatively by many effectors, external or endogenous. Diet can modify neurogenesis both ways, either directly by ways of food-borne molecules, or possibly by the modifications induced on gut microbiota composition. It is therefore critical to define dietary strategies optimal for the maintenance of the stem cell pools.
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Farías JG, Carrasco-Pozo C, Carrasco Loza R, Sepúlveda N, Álvarez P, Quezada M, Quiñones J, Molina V, Castillo RL. Polyunsaturated fatty acid induces cardioprotection against ischemia-reperfusion through the inhibition of NF-kappaB and induction of Nrf2. Exp Biol Med (Maywood) 2016; 242:1104-1114. [PMID: 27190274 DOI: 10.1177/1535370216649263] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The mechanistic evidence to support the cardioprotective effects of polyunsaturated fatty acids (PUFA) are controversial. The aim was to test cardioprotective mechanisms induced by PUFA supplementation against cardiac ischemia-reperfusion (IR) injury. Ten-week-old male Wistar rats (225 ± 14 g, n = 14) were divided in two groups: rats without supplementation ( n = 7) and a PUFA group, supplemented by PUFA (0.6 g/kg/day; DHA:EPA = 3:1) for eight weeks ( n = 7). Hearts were perfused with Krebs-Henseleit buffer for 20 min (control conditions); others were subjected to control conditions, 30 min of global ischemia and 120 min of reperfusion (IR group). Infarct size (IS) and left ventricular developed pressure (LVDP) were measured at 120 min of reperfusion. Oxidative stress biomarkers (TBARS, total carbonyls), antioxidant status (CAT, catalase; SOD, superoxide dismutase; GSH-Px, glutathione peroxidase activity and GSH/GSSG ratio), myeloperoxidase activity, ATP levels and nuclear transcription factor erythroid 2-related factor 2 (Nrf2) and nuclear factor kappaB (NF-κB) were determined in both experimental conditions. At the end of reperfusion, hearts supplemented with PUFA showed lower IS and a higher LVDP compared with the nonsupplemented rats. Hearts in the group supplemented with PUFA showed lower levels of oxidative stress markers and higher antioxidant activity, decreased MPO activity and NF-κB and Nrf2 activation compared with the nonsupplemented group. Cardioprotective effects of PUFA are exerted through induction of anti-inflammatory and antioxidant mechanism at tissue level.
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Affiliation(s)
- Jorge G Farías
- 1 Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco 4811230, Chile
| | - Catalina Carrasco-Pozo
- 2 Departamento de Nutrición, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile
| | - Rodrigo Carrasco Loza
- 3 Laboratorio de Investigación Biomédica, Facultad de Medicina Oriente, Hospital del Salvador, Universidad de Chile, Santiago 7500922, Chile
| | - Néstor Sepúlveda
- 4 Laboratorio de Producción Animal, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco 4811230, Chile
| | - Pedro Álvarez
- 5 Servicio Anestesiología, Hospital San Juan de Dios, Santiago 8380453, Chile
| | - Mauricio Quezada
- 6 Facultad de Medicina, Universidad Finis Terrae, Santiago 7501015, Chile.,7 Programa de Fisiopatología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile
| | - John Quiñones
- 4 Laboratorio de Producción Animal, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco 4811230, Chile
| | - Víctor Molina
- 8 Hospital de Niños, Roberto del Río, Santiago 8380418, Chile
| | - Rodrigo L Castillo
- 7 Programa de Fisiopatología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile
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Guo D, Li K, Yang M, Zhang H, Miao Y. Levobupivacaine attenuates lipopolysaccharide-induced acute lung injury. Fundam Clin Pharmacol 2016; 30:307-15. [PMID: 26991027 DOI: 10.1111/fcp.12197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 02/08/2016] [Accepted: 03/15/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Dan Guo
- Department of Anesthesiology; First Affiliated Hospital of Henan University of Science and Technology; Luoyang Henan China 471000
| | - Kehan Li
- Department of Anesthesiology; First Affiliated Hospital of Henan University of Science and Technology; Luoyang Henan China 471000
| | - Muqiang Yang
- Department of Anesthesiology; First Affiliated Hospital of Henan University of Science and Technology; Luoyang Henan China 471000
| | - Hongjun Zhang
- Department of Anesthesiology; First Affiliated Hospital of Henan University of Science and Technology; Luoyang Henan China 471000
| | - Yafei Miao
- Department of Anesthesiology; First Affiliated Hospital of Henan University of Science and Technology; Luoyang Henan China 471000
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Pretreatment With Erythropoietin Attenuates Intestinal Ischemia Reperfusion Injury by Further Promoting PI3K/Akt Signaling Activation. Transplant Proc 2016; 47:1639-45. [PMID: 26293027 DOI: 10.1016/j.transproceed.2015.02.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 02/10/2015] [Indexed: 11/23/2022]
Abstract
BACKGROUND Erythropoietin (EPO) has been shown to be beneficial in resolution of acute inflammation and intestinal ischemia/reperfusion (IR) injury is featured by the excessive immune response. The current research is designed to evaluate the effect and potential mechanisms of EPO on the intestinal IR injury. Therefore, the effect of EPO on intestinal IR injury was examined by the change of intestinal histology; the expression of pro-inflammatory cytokines tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β), and interferon γ (IFN-γ); and the protein levels of EPOR, p-EPOR, p85, p-p85, Akt, p-Akt, IκΒ-α, p-p65, and p65. MATERIALS AND METHODS Thirty male Sprague-Dawley rats were randomly divided into three groups: sham group (sham), IR-saline group (IRI), and the IR-EPO group (EPO). Rats were treated with EPO (5000 U/kg) 1 hour before IR induction. A rat model of IR injury was established by ligating the superior mesenteric artery for 30 minutes, followed by reperfusion for 1 hour. Intestinal histology, pro-inflammatory cytokines, and mediators were assessed. The effect of EPO on PI3K/Akt/NF-κB signaling and EPOR were also measured. RESULTS EPO significantly decreased the pathologic changes of intestinal and reduced the elevation of pro-inflammatory cytokines TNF-α, IL-1β, and IFN-γ in intestinal and serum caused by IR which was associated with suppressing NF-κB activation by further promoting activation of PI3K/Akt signaling. CONCLUSIONS EPO ameliorated the acute intestinal injury caused by IR, which was associated with further activating PI3K/Akt signaling to suppress NF-κΒ-mediating inflammation. Our findings suggest that EPO could be useful for preventing IR-induced intestinal injury.
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Meng X, Tan J, Li M, Song S, Miao Y, Zhang Q. Sirt1: Role Under the Condition of Ischemia/Hypoxia. Cell Mol Neurobiol 2016; 37:17-28. [DOI: 10.1007/s10571-016-0355-2] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/24/2016] [Indexed: 12/13/2022]
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Pochard C, Coquenlorge S, Jaulin J, Cenac N, Vergnolle N, Meurette G, Freyssinet M, Neunlist M, Rolli-Derkinderen M. Defects in 15-HETE Production and Control of Epithelial Permeability by Human Enteric Glial Cells From Patients With Crohn's Disease. Gastroenterology 2016; 150:168-80. [PMID: 26433161 DOI: 10.1053/j.gastro.2015.09.038] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 08/25/2015] [Accepted: 09/16/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Enteric glial cells (EGCs) produce soluble mediators that regulate homeostasis and permeability of the intestinal epithelial barrier (IEB). We investigated the profile of polyunsaturated fatty acid (PUFA) metabolites produced by EGCs from rats and from patients with Crohn's disease (CD), compared with controls, along with the ability of one of these metabolites, 15-hydroxyeicosatetraenoic acid (15-HETE), to regulate the permeability of the IEB. METHODS We isolated EGCs from male Sprague-Dawley rats, intestinal resections of 6 patients with CD, and uninflamed healthy areas of intestinal tissue from 6 patients who underwent surgery for colorectal cancer (controls). EGC-conditioned media was analyzed by high-sensitivity liquid-chromatography tandem mass spectrometry to determine PUFA signatures. We used immunostaining to identify 15-HETE-producing enzymes in EGCs and tissues. The effects of human EGCs and 15-HETE on permeability and transepithelial electrical resistance of the IEB were measured using Caco-2 cells; effects on signal transduction proteins were measured with immunoblots. Levels of proteins were reduced in Caco-2 cells using short-hairpin RNAs or proteins were inhibited pharmacologically. Rats were given intraperitoneal injections of 15-HETE or an inhibitor of 15-lipoxygenase (the enzyme that produces 15-HETE); colons were collected and permeability was measured. RESULTS EGCs expressed 15-lipoxygenase-2 and produced high levels of 15-HETE, which increased IEB resistance and reduced IEB permeability. 15-HETE production was reduced in EGCs from patients with CD compared with controls. EGCs from patients with CD were unable to reduce the permeability of the IEB; the addition of 15-HETE restored permeability to levels of control tissues. Inhibiting 15-HETE production in rats increased the permeability of the IEB in colon tissues. We found that 15-HETE regulates IEB permeability by inhibiting an adenosine monophosphate-activated protein kinase and increasing expression of zonula occludens-1. CONCLUSIONS Enteric glial cells from patients with CD have reduced production of 15-HETE, which controls IEB permeability by inhibiting adenosine monophosphate-activated protein kinase and increasing expression of zonula occludens-1.
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Affiliation(s)
- Camille Pochard
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Sabrina Coquenlorge
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Julie Jaulin
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France
| | | | | | - Guillaume Meurette
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Marie Freyssinet
- INSERM, UMR913, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Michel Neunlist
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France.
| | - Malvyne Rolli-Derkinderen
- INSERM, UMR913, Nantes, France; Nantes University, Nantes, France; Institut des Maladies de l'Appareil Digestif, IMAD, CHU Nantes, Hopital Hôtel-Dieu, Nantes, France; Centre de Recherche en Nutrition Humaine, Nantes, France.
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Farías JG, Herrera EA, Carrasco-Pozo C, Sotomayor-Zárate R, Cruz G, Morales P, Castillo RL. Pharmacological models and approaches for pathophysiological conditions associated with hypoxia and oxidative stress. Pharmacol Ther 2015; 158:1-23. [PMID: 26617218 DOI: 10.1016/j.pharmthera.2015.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hypoxia is the failure of oxygenation at the tissue level, where the reduced oxygen delivered is not enough to satisfy tissue demands. Metabolic depression is the physiological adaptation associated with reduced oxygen consumption, which evidently does not cause any harm to organs that are exposed to acute and short hypoxic insults. Oxidative stress (OS) refers to the imbalance between the generation of reactive oxygen species (ROS) and the ability of endogenous antioxidant systems to scavenge ROS, where ROS overwhelms the antioxidant capacity. Oxidative stress plays a crucial role in the pathogenesis of diseases related to hypoxia during intrauterine development and postnatal life. Thus, excessive ROS are implicated in the irreversible damage to cell membranes, DNA, and other cellular structures by oxidizing lipids, proteins, and nucleic acids. Here, we describe several pathophysiological conditions and in vivo and ex vivo models developed for the study of hypoxic and oxidative stress injury. We reviewed existing literature on the responses to hypoxia and oxidative stress of the cardiovascular, renal, reproductive, and central nervous systems, and discussed paradigms of chronic and intermittent hypobaric hypoxia. This systematic review is a critical analysis of the advantages in the application of some experimental strategies and their contributions leading to novel pharmacological therapies.
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Affiliation(s)
- Jorge G Farías
- Facultad de Ingeniería y Ciencias, Departamento de Ingeniería Química, Universidad de la Frontera, Casilla 54-D, Temuco, Chile
| | - Emilio A Herrera
- Programa de Fisiopatología, ICBM, Facultad de Medicina, Universidad de Chile, Chile; International Center for Andean Studies (INCAS), Universidad de Chile, Chile
| | | | - Ramón Sotomayor-Zárate
- Centro de Neurobiología y Plasticidad Cerebral (CNPC), Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Chile
| | - Gonzalo Cruz
- Centro de Neurobiología y Plasticidad Cerebral (CNPC), Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Chile
| | - Paola Morales
- Programa de Farmacología Molecular y Clínica, ICBM, Facultad de Medicina, Universidad de Chile, Chile
| | - Rodrigo L Castillo
- Programa de Fisiopatología, ICBM, Facultad de Medicina, Universidad de Chile, Chile.
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Schossleitner K, Habertheuer A, Finsterwalder R, Friedl HP, Rauscher S, Gröger M, Kocher A, Wagner C, Wagner SN, Fischer G, Schultz MJ, Wiedemann D, Petzelbauer P. A Peptide to Reduce Pulmonary Edema in a Rat Model of Lung Transplantation. PLoS One 2015; 10:e0142115. [PMID: 26536466 PMCID: PMC4633234 DOI: 10.1371/journal.pone.0142115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/16/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Despite significant advances in organ preservation, surgical techniques and perioperative care, primary graft dysfunction is a serious medical problem in transplantation medicine in general and a specific problem in patients undergoing lung transplantation. As a result, patients develop lung edema, causing reduced tissue oxygenation capacity, reduced lung compliance and increased requirements for mechanical ventilatory support. Yet, there is no effective strategy available to protect the grafted organ from stress reactions induced by ischemia/reperfusion and by the surgical procedure itself. METHODS We assessed the effect of a cingulin-derived peptide, XIB13 or a random peptide in an established rat model of allogeneic lung transplantation. Donor lungs and recipients received therapeutic peptide at the time of transplantation and outcome was analyzed 100min and 28 days post grafting. RESULTS XIB13 improved blood oxygenation and reduced vascular leak 100min post grafting. Even after 28 days, lung edema was significantly reduced by XIB13 and lungs had reduced fibrotic or necrotic zones. Moreover, the induction of an allogeneic T cell response was delayed indicating a reduced antigen exchange between the donor and the host. CONCLUSIONS In summary, we provide a new tool to strengthen endothelial barrier function thereby improving outcomes in lung transplantation.
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Affiliation(s)
- Klaudia Schossleitner
- Department of Dermatology, Skin and Endothelium Research Division (SERD) Medical University of Vienna, Vienna, Austria
| | | | - Richard Finsterwalder
- Department of Dermatology, Skin and Endothelium Research Division (SERD) Medical University of Vienna, Vienna, Austria
| | - Heinz P. Friedl
- Department of Dermatology, Skin and Endothelium Research Division (SERD) Medical University of Vienna, Vienna, Austria
| | - Sabine Rauscher
- Core Facility Imaging Medical University of Vienna, Vienna, Austria
| | - Marion Gröger
- Core Facility Imaging Medical University of Vienna, Vienna, Austria
| | - Alfred Kocher
- Department of Cardiac Surgery Medical University of Vienna, Vienna, Austria
| | - Christine Wagner
- Department of Dermatology, Division of Immunology, Allergy and Infectious Diseases Medical University of Vienna, Vienna, Austria
| | - Stephan N. Wagner
- Department of Dermatology, Division of Immunology, Allergy and Infectious Diseases Medical University of Vienna, Vienna, Austria
| | - Gottfried Fischer
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria
| | - Marcus J. Schultz
- Department of Intensive Care & Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Dominik Wiedemann
- Department of Cardiac Surgery Medical University of Vienna, Vienna, Austria
| | - Peter Petzelbauer
- Department of Dermatology, Skin and Endothelium Research Division (SERD) Medical University of Vienna, Vienna, Austria
- * E-mail:
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Li X, Zhang X, Yang E, Zhang N, Cao S, Zhou Y. Fish oil-supplemented parenteral nutrition could alleviate acute lung injury, modulate immunity, and reduce inflammation in rats with abdominal sepsis. Nutr Res 2015; 35:784-91. [PMID: 26231659 DOI: 10.1016/j.nutres.2015.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 06/17/2015] [Accepted: 06/26/2015] [Indexed: 10/23/2022]
Abstract
The objectives were to confirm that intravenous fish oil (FO) emulsions could alleviate acute lung injury, modulate immunity, and reduce inflammation in rats with abdominal sepsis and to explore the mechanisms of these effects. Thirty-six adult male Sprague-Dawley rats were divided into 4 groups randomly. Two days after central venous catheterization, rats were subjected to cecal ligation and puncture to produce abdominal sepsis. Rats were assigned to receive normal saline or total parenteral nutrition (TPN) containing standard soybean oil emulsions or FO-supplemented TPN at the onset of sepsis for 5 days. A sham operation and control treatment were performed in control group rats. Acute lung injury scores, peripheral blood lymphocyte subsets, plasma cytokines, and Foxp3 expression in the spleen were determined. Compared with the normal saline and TPN without FO, FO-supplemented TPN beneficially altered the distributions of the T-lymphocyte subsets and downregulated the acute lung injury scores, plasma cytokines, and expression of Foxp3 due to sepsis. Fish oil-supplemented TPN can decrease acute lung injury scores, alleviate histopathology, reduce the bacterial load in the peritoneal lavage fluid, modulate the lymphocyte subpopulation in the peripheral blood, downregulate Foxp3 expression in the spleen, and reduce plasma cytokines, which means that FO-supplemented TPN can alleviate acute lung injury, modulate immunity, and reduce inflammation in rats with abdominal sepsis.
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Affiliation(s)
- Xiaolong Li
- Department of Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xianxiang Zhang
- Department of Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Enqin Yang
- Department of Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nanyang Zhang
- Laboratory Animal Center of Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shougen Cao
- Department of Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China.
| | - Yanbing Zhou
- Department of Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China.
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Ashabi G, Khalaj L, Khodagholi F, Goudarzvand M, Sarkaki A. Pre-treatment with metformin activates Nrf2 antioxidant pathways and inhibits inflammatory responses through induction of AMPK after transient global cerebral ischemia. Metab Brain Dis 2015; 30:747-54. [PMID: 25413451 DOI: 10.1007/s11011-014-9632-2] [Citation(s) in RCA: 183] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/10/2014] [Indexed: 12/15/2022]
Abstract
Global cerebral ischemia arises in patients who have a variety of clinical conditions including cardiac arrest, shock and asphyxia. In spite of advances in understanding of the brain ischemia and stroke etiology, therapeutic approaches to improve ischemic injury still remain limited. It has been established that metformin can attenuate cell death in cerebral ischemia. One of the main functions of metformin is proposed to be conducted via AMP-activated protein kinase (AMPK)-dependent pathway in the experimental cerebral ischemia model. It is also established that metformin can suppress inflammation and activate Nuclear factor erythroid 2-related factor (Nrf2) pathways in neurons. In the current study, the role of metformin in regulating inflammatory and antioxidant pathways in the global cerebral ischemia was investigated. Our results indicated that pretreatment of rats by metformin attenuated cellular levels of nuclear factor-κB, Tumor Necrosis Factor alpha and Cyclooxygenase-2 which are considered as three important proteins involved in the inflammation pathway. Pretreatment by metformin increased the level of Nrf2 and heme oxygenase-1 in the hippocampus of ischemic rats compared with untreated ischemic group. Moreover, pretreatment by metformin enhanced the level of glutathione and catalase activities compared with them in ischemic group. Such protective changes detected by metformin pretreatment were reversed by injecting compound c, an AMPK inhibitor. These findings suggested that metformin might protect cells through modulating inflammatory and antioxidant pathways via induction of AMPK. However, more experimental and clinical trial studies regarding neuroprotective potential of metformin and the involved mechanisms, especially in the context of cerebral ischemic injuries, are necessary.
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Affiliation(s)
- Ghorbangol Ashabi
- Department of Physiology, Faculty of Medicine, Jundishapour Medical Sciences University, Ahwaz, Iran
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Harb H, Renz H. Update on epigenetics in allergic disease. J Allergy Clin Immunol 2015; 135:15-24. [PMID: 25567039 DOI: 10.1016/j.jaci.2014.11.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 11/04/2014] [Accepted: 11/04/2014] [Indexed: 12/20/2022]
Abstract
Chronic inflammatory diseases, including allergies and asthma, are the result of complex gene-environment interactions. One of the most challenging questions in this regard relates to the biochemical mechanism of how exogenous environmental trigger factors modulate and modify gene expression, subsequently leading to the development of chronic inflammatory conditions. Epigenetics comprises the umbrella of biochemical reactions and mechanisms, such as DNA methylation and chromatin modifications on histones and other structures. Recently, several lifestyle and environmental factors have been investigated in terms of such biochemical interactions with the gene expression-regulating machinery: allergens; microbes and microbial compounds; dietary factors, including vitamin B12, folic acid, and fish oil; obesity; and stress. This article aims to update recent developments in this context with an emphasis on allergy and asthma research.
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Affiliation(s)
- Hani Harb
- Institute for Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps-Universität Marburg, Marburg, Germany
| | - Harald Renz
- Institute for Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps-Universität Marburg, Marburg, Germany.
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Castillo RL, Zepeda AB, Short SE, Figueroa E, Bustos-Obregon E, Farías JG. Protective effects of polyunsatutared fatty acids supplementation against testicular damage induced by intermittent hypobaric hypoxia in rats. J Biomed Sci 2015; 22:8. [PMID: 25613908 PMCID: PMC4307138 DOI: 10.1186/s12929-015-0112-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 01/07/2015] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Intermittent hypobaric hypoxia (IHH) induces changes in the redox status and structure in rat testis. These effects may be present in people at high altitudes, such as athletes and miners. Polyunsaturated fatty acids (PUFA) can be effective in counteracting these oxidative modifications due to their antioxidants properties. The aim of the work was to test whether PUFA supplementation attenuates oxidative damage in testis by reinforcing the antioxidant defense system. The animals were divided into four groups (7 rats per group): normobaric normoxia (~750 tor; pO2 156 mmHg; Nx); Nx + PUFA, supplemented with PUFA (DHA: EPA = 3:1; 0.3 g kg(-1) of body weight per day); hypoxic hypoxia (~428 tor; pO2 90 mmHg; Hx) and, Hx + PUFA. The hypoxic groups were exposed in 4 cycles to 96 h of HH followed by 96 h of normobaric normoxia for 32 days. Total antioxidant capacity (FRAP) and lipid peroxidation (malondialdehyde, MDA) in plasma and reduced (GSH)/oxidized glutathione (GSSG) ratio, tissue lipid peroxidation (TBARS) and antioxidant enzymes activity were assessed at the end of the study in testis. Also, SIRTUIN 1 and HIF-1 protein expression in testis were determined. RESULTS IHH increased lipid peroxidation in plasma and HIF-1 protein levels in testis. In addition, IHH reduced FRAP levels in plasma, antioxidant enzymes activities and SIRTUIN 1 protein levels in testis. PUFA supplementation attenuated these effects, inducing the increases in FRAP, in the antioxidant enzymes activity and HIF-1 levels. CONCLUSIONS These results suggest that the IHH model induces a prooxidant status in plasma and testis. The molecular protective effect of PUFA may involve the induction of an antioxidant mechanism.
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Affiliation(s)
- Rodrigo L Castillo
- Pathophysiology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Andrea B Zepeda
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Casilla 54-D, Temuco, Chile. .,Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580 - Bloco 16, São Paulo, SP, 05508-900, Brazil.
| | - Stefania E Short
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
| | - Elías Figueroa
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Casilla 54-D, Temuco, Chile. .,School of Aquaculture, Catholic University of Temuco, Faculty of Natural Resources, Temuco, Chile.
| | - Eduardo Bustos-Obregon
- Anatomy and Developmental Biology Program, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Jorge G Farías
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
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