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Li X, Yang B. Non-Transport Functions of Aquaporins. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1398:65-80. [PMID: 36717487 DOI: 10.1007/978-981-19-7415-1_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Although it has been more than 20 years since the first aquaporin was discovered, the specific functions of many aquaporins are still under investigation, because various mice lacking aquaporins have no significant phenotypes. And in many studies, the function of aquaporin is not directly related to its transport function. Therefore, this chapter will focus on some unexpected functions of aquaporins, such the decreased tumor angiogenesis in AQP1 knockout mice, and AQP1 promotes cell migration, possibly by accelerating the water transport in lamellipodia of migrating cells. AQP transports glycerol, and water regulates glycerol content in epidermis and fat, thereby regulating skin hydration/biosynthesis and fat metabolism. AQPs may also be involved in neural signal transduction, cell volume regulation, and organelle physiology. AQP1, AQP3, and AQP5 are also involved in cell proliferation. In addition, AQPs have also been reported to play roles in inflammation in various tissues and organs. The functions of these AQPs may not depend on the permeability of small molecules such as water and glycerol, suggesting AQPs may play more roles in different biological processes in the body.
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Affiliation(s)
- Xiaowei Li
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Baoxue Yang
- School of Basic Medical Sciences, Peking University, Beijing, China.
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Gandan Oral Liquid Improves Exudative Pneumonia by Upregulating Bacteria Clearance via Regulating AQP5 and MUC5AC in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3890347. [PMID: 35518345 PMCID: PMC9064532 DOI: 10.1155/2022/3890347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/30/2022] [Indexed: 11/17/2022]
Abstract
Gandan oral liquid (GOL) is a mixture of crude extracts from licorice and Radix isatidis. Clinically, it has been widely used in the treatment of exudative pneumonia (EP) in animals. But the molecular mechanism of these effects is unclear. Therefore, antibacterial activity and therapeutic effect were tested in vitro and in vivo. Exudative pneumonia was established with the intraperitoneal injection of LPS, followed by continuous intranasal inoculation of Klebsiella pneumoniae (KP). After that, Gandan oral liquid, acetylcysteine, and levofloxacin were given through the intragastric route for five days, and clinical symptoms were observed and counted. The bacterial content of alveolar lavage fluid was determined, hematology analysis was performed, and lung histology examination was performed. Western blotting, immunohistochemistry, and immunofluorescence were used to detect the expression levels of AQP3, AQP5, and MUC5AC in lung tissues. ELISA kit was used to detect serum and BALF cytokines levels. The results showed that GOL (242 mg/mL) had no antibacterial activity on Klebsiella pneumonia (KP), and the effect was significantly worse than levofloxacin. However, the therapeutic test in vivo of the rat model of bacterial EP showed different results. After treatment, GOL administration ameliorated EP and increased the expression of mucoprotein -5AC (MUC5AC), and GOL promoted water secretion of the respiratory tract by increasing the expression of aquaporin-5 (AQP5) and decreasing the levels of proinflammatory cytokines (TNF-α, IL-6, and IL-1β). Conclusion. GOL accelerates the water secretion of respiratory tract, inhibits the inflammatory response, induces removal of bacteria of respiratory tract via the AQPs/MUC pathway, and ultimately ameliorates EP.
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Villandre J, White V, Lear TB, Chen Y, Tuncer F, Vaiz E, Tuncer B, Lockwood K, Camarco D, Liu Y, Chen BB, Evankovich J. A Repurposed Drug Screen for Compounds Regulating Aquaporin 5 Stability in Lung Epithelial Cells. Front Pharmacol 2022; 13:828643. [PMID: 35145418 PMCID: PMC8821664 DOI: 10.3389/fphar.2022.828643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/03/2022] [Indexed: 11/13/2022] Open
Abstract
Aquaporin 5 (AQP5) is expressed in several cell types in the lung and regulates water transport, which contributes to barrier function during injury and the composition of glandular secretions. Reduced AQP5 expression is associated with barrier dysfunction during acute lung injury, and strategies to enhance its expression are associated with favorable phenotypes. Thus, pharmacologically enhancing AQP5 expression could be beneficial. Here, we optimized a high-throughput assay designed to detect AQP5 abundance using a cell line stably expressing bioluminescent-tagged AQP5. We then screened a library of 1153 compounds composed of FDA-approved drugs for their effects on AQP5 abundance. We show compounds Niclosamide, Panobinostat, and Candesartan Celexitil increased AQP5 abundance, and show that Niclosamide has favorable cellular toxicity profiles. We determine that AQP5 levels are regulated in part by ubiquitination and proteasomal degradation in lung epithelial cells, and mechanistically Niclosamide increases AQP5 levels by reducing AQP5 ubiquitination and proteasomal degradation. Functionally, Niclosamide stabilized AQP5 levels in response to hypotonic stress, a stimulus known to reduce AQP5 levels. In complementary assays, Niclosamide increased endogenous AQP5 in both A549 cells and in primary, polarized human bronchial epithelial cells compared to control-treated cells. Further, we measured rapid cell volume changes in A549 cells in response to osmotic stress, an effect controlled by aquaporin channels. Niclosamide-treated A549 cell volume changes occurred more rapidly compared to control-treated cells, suggesting that increased Niclosamide-mediated increases in AQP5 expression affects functional water transport. Taken together, we describe a strategy to identify repurposed compounds for their effect on AQP5 protein abundance. We validated the effects of Niclosamide on endogenous AQP5 levels and in regulating cell-volume changes in response to tonicity changes. Our findings highlight a unique approach to screen for drug effects on protein abundance, and our workflow can be applied broadly to study compound effects on protein abundance in lung epithelial cells.
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Affiliation(s)
- John Villandre
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, United States
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Virginia White
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Travis B. Lear
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
- Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Yanwen Chen
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Ferhan Tuncer
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Emily Vaiz
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Beyza Tuncer
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Karina Lockwood
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Dan Camarco
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Yuan Liu
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, United States
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Bill B. Chen
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, United States
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
- Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - John Evankovich
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, United States
- Aging Institute, University of Pittsburgh, Pittsburgh, PA, United States
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Gao J, Bao L, Zhang A. The mechanism underlying hypaconitine-mediated alleviation of pancreatitis-associated lung injury through up-regulating aquaporin-1/TNF-α. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 31:790-798. [PMID: 33361042 DOI: 10.5152/tjg.2020.19542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND/AIMS Acute pancreatitis-associated lung injury (APALI) is one of the most common and most dangerous form of extra-pancreatic organ damage in severe acute pancreatitis (SAP). The treatment options for SAP were limited thus far; as a result, approximately 60%-80% of patients with SAP would die within a week. Hypaconitine (HC), one of the most important active ingredients in a Mongolian traditional medicine Radix Aconiti Kusnezoffii has an excellent anti-inflammatory effect. MATERIALS AND METHODS To ascertain whether HC has a protective effect against APALI, we investigated the therapeutic effects and the underlying mechanisms in vivo and in vitro and attempted to elucidate the mechanism in detail. In this study, APALI rats and human pulmonary microvascular endothelial cells were treated with therapeutic doses of HC after establishing a model with sodium taurocholate and lipopolysaccharide, respectively. RESULTS Serum amylase and lipase activity, lung wet/dry weight ratio, lung myeloperoxidase activity, and pancreatic and lung histopathological changes showed that HC alleviated APALI in a dose-dependent way, which can be abolished by an aquaporin-1 (AQP-1) knockdown. The results of the reverse transcriptase polymerase chain reaction, Western blot, and immunohistochemical staining confirmed the expression of AQP-1, a kind of transmembrane protein that mainly distributed in the membranes of pulmonary cells and contributed to maintain water balance in the body by interacting with tumor necrosis factor-alpha (TNF-α), is negatively associated with APALI. On the contrary, HC treatment up-regulated AQP-1 expression and down-regulated the TNF-α expression as a consequence in APALI. CONCLUSION These results suggest that HC has a good anti-inflammatory therapeutic effect on APALI with a possible underlying mechanism that affects the AQP-1/TNF-α pathway.
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Affiliation(s)
- Jiali Gao
- Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, P. R. China
| | - Lidao Bao
- Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, P. R. China
| | - Aiwu Zhang
- Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, P. R. China
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Yadav E, Yadav N, Hus A, Yadav JS. Aquaporins in lung health and disease: Emerging roles, regulation, and clinical implications. Respir Med 2020; 174:106193. [PMID: 33096317 DOI: 10.1016/j.rmed.2020.106193] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/17/2020] [Accepted: 10/13/2020] [Indexed: 12/16/2022]
Abstract
Aquaporins (AQPs) aka water channels are a family of conserved transmembrane proteins (~30 kDa monomers) expressed in various organ systems. Of the 13 AQPs (AQP0 through AQP12) in the human body, four (AQPs 1, 3, 4, and 5) are expressed in the respiratory system. These channels are conventionally known for mediating transcellular fluid movements. Certain AQPs (aquaglyceroporins) have the capability to transport glycerol and potentially other solutes. There is an emerging body of literature unveiling the non-conventional roles of AQPs such as in cell proliferation and migration, gas permeation, signal potentiation, etc. Initial gene knock-out studies established a physiological role for lung AQPs, particularly AQP5, in maintaining homeostasis, by mediating fluid secretion from submucosal glands onto the airway surface liquid (ASL) lining. Subsequent studies have highlighted the functional significance of AQPs, particularly AQP1 and AQP5 in lung pathophysiology and diseases, including but not limited to chronic and acute lung injury, chronic obstructive pulmonary disease (COPD), other inflammatory lung conditions, and lung cancer. AQP1 has been suggested as a potential prognostic marker for malignant mesothelioma. Recent efforts are directed toward exploiting AQPs as targets for diagnosis, prevention, intervention, and/or treatment of various lung conditions. Emerging information on regulatory pathways and directed mechanistic research are posited to unravel novel strategies for these clinical implications. Future considerations should focus on development of AQP inhibitors, blockers, and modulators for therapeutic needs, and better understanding the role of lung-specific AQPs in inter-individual susceptibility to chronic lung diseases such as COPD and cancer.
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Affiliation(s)
- Ekta Yadav
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA.
| | - Niket Yadav
- Medical Scientist Training Program, University of Virginia School of Medicine, Charlottesville, VA, 22908-0738, USA
| | - Ariel Hus
- Department of Biology, University of Miami, Coral Gables, Florida, 33146, USA
| | - Jagjit S Yadav
- Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
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Mariajoseph-Antony LF, Kannan A, Panneerselvam A, Loganathan C, Anbarasu K, Prahalathan C. Could aquaporin modulators be employed as prospective drugs for COVID-19 related pulmonary comorbidity? Med Hypotheses 2020; 143:110201. [PMID: 33017909 PMCID: PMC7430244 DOI: 10.1016/j.mehy.2020.110201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 08/15/2020] [Indexed: 01/03/2023]
Abstract
COVID-19 initially an epidemic caused by SARS-CoV-2 has turned out to be a life- threatening global pandemic with increased morbidity and mortality. The presence of cytokine storm has been linked with the pathogenesis of severe lung injury as evinced in COVID-19. Aquaporins (AQPs) are molecular water channels, facilitating water transport across the cell membrane in response to osmotic gradients. Impairment in alveolar fluid clearance due to altered functional expression of respiratory AQPs highlight their pathophysiological significance in pulmonary edema associated respiratory illness. Therefore, we hypothesize that targeted modulation of AQPs in lungs in the intervening period of time, could diminish the dreadful effects of inflammation- induced comorbidity in COVID-19.
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Affiliation(s)
- Lezy Flora Mariajoseph-Antony
- Molecular Endocrinology Laboratory, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Arun Kannan
- Molecular Endocrinology Laboratory, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Antojenifer Panneerselvam
- Molecular Endocrinology Laboratory, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Chithra Loganathan
- Molecular Endocrinology Laboratory, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Kumarasamy Anbarasu
- Microbial Biotechnology Laboratory, Department of Marine Biotechnology, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Chidambaram Prahalathan
- Molecular Endocrinology Laboratory, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, India.
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Lv X, Gao F, Zhang S, Zhang S, Zhou X, Ding F, Wang J, Chen Q, Chen M, Liu Q. Maladjustment of β-CGRP/α-CGRP Regulation of AQP5 Promotes Transition of Alveolar Epithelial Cell Apoptosis to Pulmonary Fibrosis. J Interferon Cytokine Res 2020; 40:377-388. [PMID: 32746702 DOI: 10.1089/jir.2019.0184] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This study explored the triggering mechanism of interstitial lung disease (ILD). We established the effects of immunogenic and neurogenic calcitonin gene-related peptide (CGRP) imbalance on the regulation of aquaporin 5 (AQP5) expression and the repair responses that promote the transition from alveolar epithelial cell (AEC) apoptosis to pulmonary fibrosis. Newly diagnosed ILD patients (n = 60) were enrolled, whose serological levels of β-CGRP, α-CGRP, AQP5, receptor activity modifying protein 1, and receptor component protein were detected by ELISA. Th1 and Th2 cytokines and CD4+ and CD8+ cells were measured by flow cytometry method. In vivo, bleomycin (BLM) was set for modeling pulmonary fibrosis. A CALCA-HET model was set as a chronic pulmonary fibrosis model. Hematoxylin-eosin, immunohistochemistry, and Masson's trichrome staining were performed to assess the role of apoptosis in the injured lung. The concentrations of cytokines were determined by cytokine antibody arrays. Abnormal activation of serological CD4+ T lymphocytes and predominant Th2 response was established in the patients with ILD. Moreover, the ratio of β-CGRP/α-CGRP positively correlated with the increased level of AQP5 in patients with ILD. In vivo, a significant increase of AQP5 and β-CGRP at the chronic stage of pulmonary fibrosis was induced by BLM in the mice model, whereas the expression of AQP5 protein was generally lower in the acute alveolitis phase. Moreover, the levels of AQP5 and α-CGRP in the CALCA-HET rats were lower than those of the normal saline group. The high ratio β-CGRP/α-CGRP enhanced the expression of AQP5, inhibited transforming growth factor-β1 (TGFβ1)/P-Smad1/Smad4 pathway, and upregulated the NRF2 signal, whereas the apoptosis of AECs was significantly reduced in late-stage pulmonary fibrosis. The imbalance of β-CGRP/α-CGRP may be associated with the predominance of Th2 response and participate in the process of AEC apoptosis in lung fibrosis. The high ratio of β-CGRP/α-CGRP may elevate the level of AQP5 through inactivation of the TGF-β1/smad1 signaling pathway and upregulation of the Nrf2 signaling in the chronic stage of pulmonary fibrosis.
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Affiliation(s)
- Xiaoting Lv
- Department of Respiratory and Critical Care Medicine, Research Laboratory of the Respiratory System Diseases, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Feng Gao
- Department of Pathology, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Shuyu Zhang
- College of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Sheng Zhang
- Department of Pathology, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Xiaohui Zhou
- Department of Clinical Skill Training Center, Fujian Medical University, Fuzhou, China
| | - Fadian Ding
- Department of Hepatopancreatobiliary Surgery and Institute of Abdominal Surgery, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jingwen Wang
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Qingquan Chen
- College of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Min Chen
- College of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Qicai Liu
- Department of Reproductive Medicine Centre, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
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Owji MS, Varedi M, Naghibalhossaini F, Pajouhi N. Thyroid Function Modulates Lung Fluid and Alveolar Viscoelasticity in Mechanically Ventilated Rat. J Surg Res 2020; 253:272-279. [PMID: 32402852 DOI: 10.1016/j.jss.2020.03.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 02/23/2020] [Accepted: 03/30/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Mechanical ventilation (MV) is life saving; yet it may induce severe lung injury and lead to multisystem organ failure and death. Thyroid hormones (THs) promote alveolar fluid clearance and alleviates hypoxia-induced lung injury. Given that the mechanism involved in hypoxia-induced lung injury is different from that of ventilator-induced lung injury, we examined the effects of thyroid function on lung extravascular fluid (LF), aquaporin 5 (AQP 5) expression, and alveolar viscoelasticity (AVE) in mechanically ventilated rat. METHODS Hypothyroid (hypo) and hyperthyroid (hyper) animals were generated by administration of metimazole and L-thyroxine, respectively. Lung injury was induced by high-tidal volume MV. The LF was estimated by lung wet weight-to-dry weight ratio assessment. Expression of AQP 5 was evaluated by western blotting and in situ immunohistochemistry. The AVE was judged by elastic lung pressure/volume curve recording. RESULTS Injurious MV significantly reduced lung AQP 5 expression and altered LF and AVE in a thyroid function-dependent manner. Regardless of animals' ventilation mode, hyper state caused significant reductions in LF and lung AQP 5 protein. It also improved AVE irrespective of animals' ventilation mode. The effects of hypo condition on LF, AQP 5 expression, and AVE were in contrast to that of hyper state. CONCLUSIONS These data indicate that thyroid function has profound effects on LF, AQP 5, and AVE in mechanically ventilated lungs. Given that the effects of thyroidal status were as prominent as that of injurious MV, we suggest that thyroid function should be considered when patients are to be subjected to MV.
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Affiliation(s)
- Mohammad S Owji
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masoumeh Varedi
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
| | | | - Nasser Pajouhi
- Department of Physiology, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Lorestan, Iran
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Rahmel T, Nowak H, Rump K, Koos B, Schenker P, Viebahn R, Adamzik M, Bergmann L. The Aquaporin 5 -1364A/C Promoter Polymorphism Is Associated With Cytomegalovirus Infection Risk in Kidney Transplant Recipients. Front Immunol 2019; 10:2871. [PMID: 31867018 PMCID: PMC6906153 DOI: 10.3389/fimmu.2019.02871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 11/22/2019] [Indexed: 12/19/2022] Open
Abstract
Background: The aquaporin 5 (AQP5) −1364A/C promoter single nucleotide polymorphism affects key mechanisms of inflammation and immune cell migration. Thus, it could be involved in the pathogenesis of cytomegalovirus infection. Accordingly, we tested the hypothesis that the AQP5 promoter −1364A/C polymorphism is associated with the risk of cytomegalovirus infection in kidney transplantation recipients. Methods: We included 259 adult patients who received a kidney transplant from 2007 and 2014 in this observational study. Patients were genotyped for the AQP5 promoter −1364A/C single nucleotide polymorphism and followed up for 12 months after transplantation. Kaplan–Meier plots and multivariable proportional hazard analyses were used to evaluate the relationship between genotypes and the incidence of cytomegalovirus infection. Results: The incidences of cytomegalovirus infection within 12 months after kidney transplantation were 22.9% for the AA genotypes (43/188) and 42.3% for the AC/CC genotypes (30/71; p = 0.002). Furthermore, multivariable COX regression revealed the C-allele of the AQP5 −1364A/C polymorphism to be a strong and independent risk factor for cytomegalovirus infection. In this analysis, AC/CC subjects demonstrated a more than 2-fold increased risk for cytomegalovirus infection within the first year after kidney transplantation (hazard ratio: 2.28; 95% CI: 1.40–3.73; p = 0.001) compared to that in individuals with homozygous AA genotypes. Conclusions: With respect to opportunistic cytomegalovirus infections (attributable to immunosuppression after kidney transplantation), the C-allele of the AQP5 −1364A/C promoter polymorphism is independently associated with an increased 12-months infection risk. These findings emphasize the importance of genetic variations as additional risk factors of cytomegalovirus infection after solid organ transplantations and might also facilitate the discovery of novel therapeutic targets.
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Affiliation(s)
- Tim Rahmel
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Hartmuth Nowak
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Katharina Rump
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Björn Koos
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Peter Schenker
- Klinik für Chirurgie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Richard Viebahn
- Klinik für Chirurgie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Michael Adamzik
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Lars Bergmann
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
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Ba F, Zhou X, Zhang Y, Wu C, Xu S, Wu L, Li J, Yin Y, Gu X. Lipoxin A4 ameliorates alveolar fluid clearance disturbance in lipopolysaccharide-induced lung injury via aquaporin 5 and MAPK signaling pathway. J Thorac Dis 2019; 11:3599-3608. [PMID: 31559067 DOI: 10.21037/jtd.2019.08.86] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background A characteristic of acute lung injury (ALI) is the inflammatory damage of alveolar fluid transport. Lipoxins are endogenous lipids involving in the resolution of inflammation. It is found that lipoxin A4 (LXA4) has the distinct properties to improve the anti-edema and pro-resolution function in inflammation. Since aquaporins (AQPs) have essential roles in the integrity of barrier function during fluid transport, especially AQP5 in the maintaining of the epithelium permeability, the current study is aimed to evaluate the potential role of LXA4 in regulating alveolar fluid clearance (AFC) during fluid transport and the corresponding change of AQP5 in the lung. Methods ALI was induced by the lipopolysaccharide (LPS) intraperitoneal injection, and LXA4 treatment was given 8 hours after LPS administration. We investigated changes in the capacity of AFC, pro-inflammatory cytokine concentrations in bronchoalveolar lavage fluid (BALF) and the severity of ALI. Then AQP5 expression in lung tissue and potential regulatory pathways in LPS-induced ALI was explored. Results LXA4 treatment was found to inhibit AFC capacity, inflammatory cytokine release, partially, alleviate ALI severity, and restored AQP5 expression partially. Additionally, we found that LXA4 played a protective role by the inhibition of the phosphorylation of p38 and JNK. Conclusions In summary, our results suggest that LXA4 plays a protective role in lipopolysaccharide-induced ALI by restoring AFC capacity and upregulating AQP5 expression and inhibiting the phosphorylation of p38 and JNK. These findings suggest potential new mechanism of LXA4 as anti-inflammation therapy for the impairment of alveolar fluid transport in ALI.
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Affiliation(s)
- Fang Ba
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Xiaoming Zhou
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yingqi Zhang
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Cen Wu
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Shenqian Xu
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Liqin Wu
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jiayang Li
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yan Yin
- Institute of Respiratory Disease, First Hospital of China Medical University, Shenyang 110004, China
| | - Xiu Gu
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
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11
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Wang JJ, Kong H, Xu J, Wang YL, Wang H, Xie WP. Fasudil alleviates LPS-induced lung injury by restoring aquaporin 5 expression and inhibiting inflammation in lungs. J Biomed Res 2019; 33:156-163. [PMID: 28963443 PMCID: PMC6551422 DOI: 10.7555/jbr.31.20170024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Fasudil, a selective rho kinase (ROCK) inhibitor, has been reported to play a beneficial role in systemic?inflammation?in acute?lung injury, but its mechanism for ameliorating pulmonary edema and inflammation remains unclear. Using hematoxylin-and-eosin (H&E) staining, immunohistochemistry, enzyme-linked immunosorbent assay, quantitative real time PCR and Western blotting, we found that fasudil attenuated LPS-induced lung injury, decreased lung edema, and suppressed inflammatory responses including leukocyte infiltration and IL-6 production. Further, fasudil upregulated LPS-induced aquaporin 5 reduction and inhibited NF-κB activation in the lungs of mice. Our results suggest that fasudil could restore the expression of aquaporin 5 to eliminate LPS-induced lung edema and prevent LPS-induced pulmonary inflammation by blocking the inflammatory pathway. Collectively, blockade of the ROCK pathway by fasudil may be a potential strategy for the treatment of acute lung injury.
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Affiliation(s)
- Jing-Jing Wang
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Hui Kong
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Jian Xu
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yan-Li Wang
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Hong Wang
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Wei-Ping Xie
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
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12
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Kindermann A, Baier J, Simm A, Haase R, Bartling B. Receptor for advanced glycation end-products modulates lung development and lung sensitivity to hyperoxic injury in newborn mice. Pflugers Arch 2019; 471:983-994. [PMID: 30879195 DOI: 10.1007/s00424-019-02267-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/14/2019] [Accepted: 02/25/2019] [Indexed: 12/20/2022]
Abstract
The receptor for advanced glycation end-products is mainly expressed in type I alveolar epithelial cells but its importance in lung development and response to neonatal hyperoxia is unclear. Therefore, our study aimed at the analysis of young wildtype and RAGE knockout mice which grew up under normoxic or hyperoxic air conditions for the first 14 days followed by a longer period of normoxic conditions. Lung histology, expression of lung-specific proteins, and respiratory mechanics were analyzed when the mice reached an age of 2 or 4 months. These analyses indicated less but larger and thicker alveoli in RAGE knockout mice, reverse differences in the mRNA and protein amount of pro-surfactant proteins (pro-SP-B, pro-SP-C) and aquaporin-5, and differences in the amount of elastin and CREB, a pro-survival transcription factor, as well as higher lung compliance. Despite this potential disadvantages, RAGE knockout lungs showed less long-term damages mediated by neonatal hyperoxia. In detail, the hyperoxia-mediated reduction in alveoli, enlargement of airspaces, fragmentation of elastic fibers, and increased lung compliance combined with reduced peak airflows was less pronounced in RAGE knockout mice. In conclusion, RAGE supports the alveolarization but makes the lung more susceptible to hyperoxic injury shortly after birth. Blocking RAGE function could still be a helpful tool in reducing hyperoxia-mediated lung pathologies during alveolarization.
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Affiliation(s)
- Anke Kindermann
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
| | - Jan Baier
- Department of Neonatology and Pediatric Intensive Care, Clinic for Child and Adolescent Medicine, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Andreas Simm
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
| | - Roland Haase
- Department of Neonatology and Pediatric Intensive Care, Clinic for Child and Adolescent Medicine, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Babett Bartling
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany.
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13
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Tanshinol upregulates the expression of aquaporin 5 in lung tissue of rats with sepsis. Oncol Lett 2018; 16:3290-3296. [PMID: 30127927 DOI: 10.3892/ol.2018.9026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 06/15/2018] [Indexed: 01/18/2023] Open
Abstract
Aquaporin 5 (AQP-5) is a water channel protein that is closely associated with non-small cell lung cancer tissues. The present study aimed to investigate the mechanism of tanshinol treatment on AQP-5 in the lung tissue of rats with sepsis. Animals in a rat sepsis model were randomly divided into six groups including blank control (ctrl), sham operation (SO), model (sepsis), low dose tanshinol (5 mg/kg/day; Tan-L), moderate dose tanshinol (10 mg/kg/day; Tan-M) and high dose tanshinol (20 mg/kg/day; Tan-H) groups. After 7 days of administration, the expression level of AQP-5 mRNA was detected by reverse transcription-quantitative polymerase chain reaction. The levels of interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) were measured by ELISA. Hematoxylin and eosin staining was used for histopathological observation. The expression levels of AQP-5, P38 and phosphorylated (P)-P38 protein in lung tissues were detected by western blot analysis. The expression levels of AQP-5 in the sepsis group were significantly decreased compared with those in ctrl and SO groups (P<0.01), while the levels of TNF-α, IL-6 and p-P38 were significantly increased in sepsis group compared with those in ctrl and SO groups (P<0.01). Following tanshinol intervention, the expression levels of AQP-5 were significantly increased, while the levels of TNF-α, IL-6 and p-P38 were decreased compared with those in sepsis group. Tanshinol may upregulate the expression of AQP-5 by inhibiting the inflammatory cytokines and phosphorylation of P38, therefore protecting the lung tissue of rats with sepsis.
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14
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Vassiliou AG, Manitsopoulos N, Kardara M, Maniatis NA, Orfanos SE, Kotanidou A. Differential Expression of Aquaporins in Experimental Models of Acute Lung Injury. ACTA ACUST UNITED AC 2018; 31:885-894. [PMID: 28882955 DOI: 10.21873/invivo.11143] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/09/2017] [Accepted: 08/21/2017] [Indexed: 12/23/2022]
Abstract
AIM The mammalian lung expresses at least three aquaporin (AQP) water channels whose precise role in lung injury or inflammation is still controversial. MATERIALS AND METHODS Three murine models of lung inflammation and corresponding controls were used to evaluate the expression of Aqp1, Aqp4, Aqp5 and Aqp9: lipopolysaccharide (LPS)-induced lung injury; HCl-induced lung injury; and ventilation-induced lung injury (VILI). RESULTS All models yielded increased lung vascular permeability, and inflammatory cell infiltration in the broncho-alveolar lavage fluid; VILI additionally produced altered lung mechanics. Lung expression of Aqp4 decreased in the models that targeted primarily the alveolar epithelium, i.e. acid aspiration and mechanical ventilation, while Aqp5 expression decreased in the model that appeared to target both the capillary endothelium and alveolar epithelium, i.e. LPS. CONCLUSION Participation of aquaporins in the acute inflammatory process depends on localization and the type of lung injury.
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Affiliation(s)
- Alice G Vassiliou
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Nikolaos Manitsopoulos
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Matina Kardara
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Nikolaos A Maniatis
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.,Second Department of Critical Care, Attikon Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Stylianos E Orfanos
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece .,Second Department of Critical Care, Attikon Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Anastasia Kotanidou
- GP Livanos and M. Simou Laboratories, First Department of Critical Care Medicine & Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.,First Department of Critical Care Medicine & Pulmonary Services, National and Kapodistrian University of Athens Medical School, Evangelismos Hospital, Athens, Greece
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15
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Chao G, Zhang S. Aquaporins 1, 3 and 8 expression in irritable bowel syndrome rats' colon via NF-κB pathway. Oncotarget 2018; 8:47175-47183. [PMID: 28525373 PMCID: PMC5564554 DOI: 10.18632/oncotarget.17565] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 04/18/2017] [Indexed: 02/07/2023] Open
Abstract
Objective Our research was to detect the expression of aquaporins. NF-κB in Irritable bowel syndrome (IBS) rat models’ colon so as to find novel pathogenesisof IBS. Results The expression of AQP1, AQP3, and AQP8 of IBS model group was down-regulated while NF-κB p65 was up-regulated comparing with control group (p < 0.05), and the expression of AQP1, AQP3, and AQP8 of inhibitor group was up-regulated while NF-κB p65 was down-regulated comparing with IBS model group (p < 0.05). Materials and Methods 18 adult female SD big rats were divided into three groups:the rats in control group were normal rats, the rats in IBS model group and the rats of inhibitor group were injected with the inhibitor of NF-κB (PDTC). Immunohistochemical technique and western blot were performed to detect the expression of AQP1, AQP3, AQP8 and NF-κB p65. RT-PCR was performed to detect the expression of AQP1, AQP3, and AQP8. Conclusions Liquid water metabolic abnormalities and intestine permeability alteration might be the mechanism of IBS by down-regulating AQP1, AQP3 and AQP8 via NF-κB pathway.
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Affiliation(s)
- Guanqun Chao
- Department of Family Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Shuo Zhang
- Department of Gastroenterology, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
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16
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Chang YL, Lin CS, Wang HW, Jian KR, Liu SC. Chlorpheniramine attenuates histamine-mediated aquaporin 5 downregulation in human nasal epithelial cells via suppression of NF-κB activation. Int J Med Sci 2017; 14:1268-1275. [PMID: 29104484 PMCID: PMC5666561 DOI: 10.7150/ijms.21573] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/01/2017] [Indexed: 11/05/2022] Open
Abstract
Background: Aquaporin 5 (AQP5) is most likely the primary water channel in the human nasal mucosa and acts as a key tight junction protein. The signaling cascades responsible for AQP5 regulation are still works in progress. Objective: This study sought to determine the effects of histamine and chlorpheniramine on AQP5 expression in human nasal epithelial cells (HNEpC) and to detect the signaling cascades responsible for these effects. Methods: HNEpC were cultured with four concentrations of histamine or chlorpheniramine in vitro. The sub-cellular distribution of AQP5 was explored using immunocytochemistry. The pharmacologic effects of histamine and chlorpheniramine on the expression of the phosphorylation of cyclic adenosine monophosphate-responsive element binding protein (p-CREB), the AQP5 and the NF-κB protein were examined using Western blotting. Results: AQP5 was found to be located in cell membrane and cytoplasm and present in every group without significant difference. Histamine inhibits the expression of AQP5 and p-CREB in HNEpC, while chlorpheniramine dose-dependently increases these protein levels with statistical significance. HNEpC treated with histamine and chlorpheniramine in turn showed the same trends as those intervened separately with these two drugs. Moreover, chlorpheniramine had the ability to reverse the inhibitory effect of histamine. Western blotting analysis revealed that after incubation with 10-4 M histamine, NF-κB protein was significantly heightened by 165% compared with the untreated control group. Again, such increase can be significantly reversed after chlorpheniramine treatment. Conclusions: The current study demonstrated that histamine inhibits CREB phosphorylation in HNEpC, which results in decreased AQP5 expression via activation of NF-κB pathway. Chlorpheniramine attenuates the inhibitory effect of histamine in p-CREB/AQP5 expression via suppression of NF-κB signal cascades. This observation could provide additional insight into the anti-inflammatory effects of H1-antihistamines that contribute to maintain airway surface liquid and mucosal defense.
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Affiliation(s)
| | - Chun-Shu Lin
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center
| | - Hsing-Won Wang
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center
- Department of Otolaryngology-Head and Neck Surgery, Shuang Ho Hospital Taipei, Taiwan, Republic of China
| | - Kai Ren Jian
- Department of Biochemistry, National Defense Medical Center
| | - Shao-Cheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center
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17
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Aquaporins in Respiratory System. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 969:115-122. [PMID: 28258569 DOI: 10.1007/978-94-024-1057-0_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Aquaporins (AQPs ) are water channel proteins supposed to facilitating fluid transport in alveolar space, airway humidification, pleural fluid absorption, and submucosal gland secretion . In this chapter, we mainly focus on the expression of 4 AQPs in the lungs which include AQP1, AQP2 , AQP4 and AQP5 in normal and disease status, and the experience of AQPs function from various model and transgenic mice were summarized in detail to improve our understanding of the role of AQPs in fluid balance of respiratory system. It has been suggested that AQPs play important roles in various physiology and pathophysiology conditions of different lung diseases. There still remains unclear the exact role of AQPs in lung diseases, and thus continuous efforts on elucidating the roles of AQPs in lung physiological and pathophysilogical processes are warranted.
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Abstract
The receptor for advanced glycation end-products (RAGE) is involved in inflammatory response during acute respiratory distress syndrome (ARDS). Growing body of evidence support strategies of RAGE inhibition in experimental lung injury, but its modalities and effects remain underinvestigated. Anesthetised C57BL/6JRj mice were divided in four groups; three of them underwent orotracheal instillation of acid and were treated with anti-RAGE monoclonal antibody (mAb) or recombinant soluble RAGE (sRAGE), acting as a decoy receptor. The fourth group served as a control. Lung injury was assessed by the analysis of blood gases, alveolar permeability, histology, AFC, and cytokines. Lung expression and distribution epithelial channels ENaC, Na,K-ATPase, and aquaporin (AQP)−5 were assessed. Treatment with either anti-RAGE mAb or sRAGE improved lung injury, arterial oxygenation and decreased alveolar inflammation in acid-injured animals. Anti-RAGE therapies were associated with restored AFC and increased lung expression of AQP-5 in alveolar cell. Blocking RAGE had potential therapeutic effects in a translational mouse model of ARDS, possibly through a decrease in alveolar type 1 epithelial cell injury as shown by restored AFC and lung AQP-5 expression. Further mechanistic studies are warranted to describe intracellular pathways that may control such effects of RAGE on lung epithelial injury and repair.
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19
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Xu C, Jiang L, Zou Y, Xing J, Sun H, Zhu B, Zhang H, Wang J, Zhang J. Involvement of water channel Aquaporin 5 in H 2S-induced pulmonary edema. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 49:202-211. [PMID: 28088675 DOI: 10.1016/j.etap.2016.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/23/2016] [Accepted: 12/27/2016] [Indexed: 06/06/2023]
Abstract
Acute exposure to hydrogen sulfide (H2S) poses a significant threat to life, and the lung is one of the primary target organs of H2S. However, the mechanisms involved in H2S-induced acute pulmonary edema are poorly understood. This study aims to investigate the effects of H2S on the expression of water channel aquaporin 5 (AQP5) and to elucidate the signaling pathways involved in AQP5 regulation. In an in vivo study, C57BL6 mice were exposed to sub-lethal concentrations of inhaled H2S, and histological injury of the lungs and ultrastructure injury of the epithelial cells were evaluated. With real-time PCR and western blot assays, we found that H2S exposure contributed to a significant decrease in AQP5 expression both in murine lung tissue and the A549 cell line, and the ERK1/2 and p38 MAPK signaling pathways were demonstrated to be implicated in AQP5 regulation. Therefore, adjusting AQP5 protein levels could be considered a therapeutic strategy for the treatment of APE induced by H2S and other hazardous gases.
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Affiliation(s)
- Chunyang Xu
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Lei Jiang
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Yuxia Zou
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, Jiangsu, 211166, China
| | - Jingjing Xing
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Hao Sun
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Baoli Zhu
- Department of Occupational Disease Prophylactic-Therapeutic Institution, Jiangsu Provincial Center for Disease Prevention and Control, 122 Heban Cun, Nanjing, Jiangsu, 210028, China
| | - Hengdong Zhang
- Department of Occupational Disease Prophylactic-Therapeutic Institution, Jiangsu Provincial Center for Disease Prevention and Control, 122 Heban Cun, Nanjing, Jiangsu, 210028, China
| | - Jun Wang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, Jiangsu, 211166, China.
| | - Jinsong Zhang
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China.
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20
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Holm A, Magnusson KE, Vikström E. Pseudomonas aeruginosa N-3-oxo-dodecanoyl-homoserine Lactone Elicits Changes in Cell Volume, Morphology, and AQP9 Characteristics in Macrophages. Front Cell Infect Microbiol 2016; 6:32. [PMID: 27047801 PMCID: PMC4805602 DOI: 10.3389/fcimb.2016.00032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/07/2016] [Indexed: 12/21/2022] Open
Abstract
Quorum sensing (QS) communication allows Pseudomonas aeruginosa to collectively control its population density and the production of biofilms and virulence factors. QS signal molecules, like N-3-oxo-dodecanoyl-L-homoserine lactone (3O-C12-HSL), can also affect the behavior of host cells, e.g., by modulating the chemotaxis, migration, and phagocytosis of human leukocytes. Moreover, host water homeostasis and water channels aquaporins (AQP) are critical for cell morphology and functions as AQP interact indirectly with the cell cytoskeleton and signaling cascades. Here, we investigated how P. aeruginosa 3O-C12-HSL affects cell morphology, area, volume and AQP9 expression and distribution in human primary macrophages, using quantitative PCR, immunoblotting, two- and three-dimensional live imaging, confocal and nanoscale imaging. Thus, 3O-C12-HSL enhanced cell volume and area and induced cell shape and protrusion fluctuations in macrophages, processes tentatively driven by fluxes of water across cell membrane through AQP9, the predominant AQP in macrophages. Moreover, 3O-C12-HSL upregulated the expression of AQP9 at both the protein and mRNA levels. This was accompanied with enhanced whole cell AQP9 fluorescent intensity and redistribution of AQP9 to the leading and trailing regions, in parallel with increased cell area in the macrophages. Finally, nanoscopy imaging provided details on AQP9 dynamics and architecture within the lamellipodial area of 3O-C12-HSL-stimulated cells. We suggest that these novel events in the interaction between P. aeruginosa and macrophage may have an impact on the effectiveness of innate immune cells to fight bacteria, and thereby resolve the early stages of infections and inflammations.
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Affiliation(s)
- Angelika Holm
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
| | - Karl-Eric Magnusson
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
| | - Elena Vikström
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
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21
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Molinas A, Mirazimi A, Holm A, Loitto VM, Magnusson KE, Vikström E. Protective role of host aquaporin 6 against Hazara virus, a model for Crimean-Congo hemorrhagic fever virus infection. FEMS Microbiol Lett 2016; 363:fnw058. [PMID: 26976854 DOI: 10.1093/femsle/fnw058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2016] [Indexed: 12/26/2022] Open
Abstract
Crimean-Congo hemorrhagic fever virus (CCHFV) is an arthropod-borne pathogen that causes infectious disease with severe hemorrhagic manifestations in vascular system in humans. The proper function of the cells in the vascular system is critically regulated by aquaporins (AQP), water channels that facilitate fluxes of water and small solutes across membranes. With Hazara virus as a model for CCHFV, we investigated the effects of viruses on AQP6 and the impact of AQP6 on virus infectivity in host cells, using transiently expressed GFP-AQP6 cells, immunofluorescent assay for virus detection, epifluorescent imaging of living cells and confocal microscopy. In GFP-AQP6 expressing cells, Hazara virus reduced both the cellular and perinuclear AQP6 distribution and changed the cell area. Infection of human cell with CCHFV strain IbAR 10200 downregulated AQP6 expression at mRNA level. Interestingly, the overexpression of AQP6 in host cells decreased the infectivity of Hazara virus, speaking for a protective role of AQP6. We suggest the possibility for AQP6 being a novel player in the virus-host interactions, which may lead to less severe outcomes of an infection.
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Affiliation(s)
- Andrea Molinas
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Ali Mirazimi
- Department of Laboratory Medicine, Karolinska Institute, SE-171 77 Stockholm, Sweden
| | - Angelika Holm
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Vesa M Loitto
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Karl-Eric Magnusson
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Elena Vikström
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
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22
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Liang X, Zhang B, Chen Q, Zhang J, Lei B, Li B, Wei Y, Zhai R, Liang Z, He S, Tang B. The mechanism underlying alpinetin-mediated alleviation of pancreatitis-associated lung injury through upregulating aquaporin-1. Drug Des Devel Ther 2016; 10:841-50. [PMID: 26966354 PMCID: PMC4771394 DOI: 10.2147/dddt.s97614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Characterized by its acute onset, critical condition, poor prognosis, and high mortality rate, severe acute pancreatitis (SAP) can cause multiple organ failure at its early stage, particularly acute lung injury (ALI). The pathogenesis of ALI is diffuse alveolar damage, including an increase in pulmonary microvascular permeability, a decrease in compliance, and invasion of many inflammatory cells. Corticosteroids are the main treatment method for ALI; however, the associated high toxicity and side effects induce pain in patients. Recent studies show that the effective components in many traditional Chinese medicines can effectively inhibit inflammation with few side effects, which can decrease the complications caused by steroid consumption. Based on these observations, the main objective of the current study is to investigate the effect of alpinetin, which is a flavonoid extracted from Alpinia katsumadai Hayata, on treating lung injury induced by SAP and to explore the mechanism underlying the alpinetin-mediated decrease in the extent of ALI. In this study, we have shown through in vitro experiments that a therapeutic dose of alpinetin can promote human pulmonary microvascular endothelial cell proliferation. We have also shown via in vitro and in vivo experiments that alpinetin upregulates aquaporin-1 and, thereby, inhibits tumor necrosis factor-α expression as well as reduces the degree of lung injury. Overall, our study shows that alpinetin alleviates SAP-induced ALI. The likely molecular mechanism includes upregulated aquaporin expression, which inhibits tumor necrosis factor-α and, thus, alleviates SAP-induced ALI.
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Affiliation(s)
- Xingsi Liang
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Infectious Diseases, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Bin Zhang
- Department of Oncology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, People's Republic of China
| | - Quan Chen
- Department of Anesthesiology, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning, People's Republic of China
| | - Jing Zhang
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Biao Lei
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Bo Li
- Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Yangchao Wei
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Run Zhai
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Zhiqing Liang
- Department of Infectious Diseases, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Songqing He
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
| | - Bo Tang
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China; Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, People's Republic of China
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Jiang YX, Dai ZL, Zhang XP, Zhao W, Huang Q, Gao LK. Dexmedetomidine alleviates pulmonary edema by upregulating AQP1 and AQP5 expression in rats with acute lung injury induced by lipopolysaccharide. ACTA ACUST UNITED AC 2015; 35:684-688. [PMID: 26489622 DOI: 10.1007/s11596-015-1490-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 06/29/2015] [Indexed: 01/11/2023]
Abstract
This study aims to elucidate the mechanisms by which dexmedetomidine alleviates pulmonary edema in rats with acute lung injury induced by lipopolysaccharide (LPS). Male Wistar rats were randomly divided into five groups: normal saline control (NS) group, receiving intravenous 0.9% normal saline (5 mL/kg); LPS group, receiving intravenous LPS (10 mg/kg); small-dose dexmedetomidine (S) group, treated with a small dose of dexmedetomidine (0.5 μg · kg(-1) · h(-1)); medium-dose dexmedetomidine (M) group, treated with a medium dose of dexmedetomidine (2.5 μg · kg(-1) · h(-1)); high-dose dexmedetomidine (H) group, treated with a high dose of dexmedetomidine (5 μg · kg(-1) · h(-1)). The rats were sacrificed 6 h after intravenous injection of LPS or NS, and the lungs were removed for evaluating histological characteristics and determining the lung wet/dry weight ratio (W/D). The levels of tumor necrosis factor-alpha (TNF-α) and interleukin-1β (IL-1β) in the lung tissues were assessed by enzyme- linked immunosorbent assay (ELISA). The mRNA and protein expression levels of aquaporin-1 (AQP1) and aquaporin-5 (AQP5) were detected by RT-PCR, immunohistochemistry, and Western blotting. The lung tissues from the LPS groups were significantly damaged, which were less pronounced in the H group but not in the small-dose dexmedetomidine group or medium-dose dexmedetomidine group. The W/D and the concentrations of TNF-α and IL-1β in the pulmonary tissues were increased in the LPS group as compared with those in NS group, which were reduced in the H group but not in S group or M group (P<0.01). The expression of AQP1 and AQP5 was lower in the LPS group than in the NS group, and significantly increased in the H group but not in the S group or M group (P<0.01). Our findings suggest that dexmedetomidine may alleviate pulmonary edema by increasing the expression of AQP-1 and AQP-5.
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Affiliation(s)
- Yuan-Xu Jiang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen, 518020, China.
| | - Zhong-Liang Dai
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen, 518020, China
| | - Xue-Ping Zhang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen, 518020, China.
| | - Wei Zhao
- Department of Anesthesiology, Zhujiang Hospital, Nanfang Medical University, Guangzhou, 518000, China
| | - Qiang Huang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen, 518020, China
| | - Li-Kun Gao
- Department of Pathology, Shenzhen People's Hospital, Shenzhen, 518020, China
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24
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Sun CZ, Shen H, He XW, Bao L, Song Y, Zhang Z, Qin HD. Effect of dobutamine on lung aquaporin 5 in endotoxine shock-induced acute lung injury rabbit. J Thorac Dis 2015; 7:1467-77. [PMID: 26380773 DOI: 10.3978/j.issn.2072-1439.2015.08.22] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 08/14/2015] [Indexed: 12/29/2022]
Abstract
BACKGROUND Dobutamine, a commonly used vasoactive drug, has been reported to reduce pulmonary edema and protect against acute lung injury (ALI) by up-regulating aquaporin 5 (AQP5) expressions. However, the underlying mechanism is still elusive. METHODS ALI was induced by intravenous injection of LPS. Seventy male New Zealand white rabbits were randomly divided into seven groups: sham group, ALI group, dobutamine low-dose group [group ALI + Dob (L)], dobutamine medium-dose group [group ALI + Dob (M)], dobutamine high-dose group [group ALI + Dob (H)], ALI + Dob (H) + ICI group and sham + ICI group. ICI 118,551, a potent and specific beta-2 antagonist, could block the effect of dobutamine. The animals were sacrificed at 3 h after endotoxic shock and lungs were removed. The arterial blood gas was analyzed. The lung wet to dry (W/D) ratio was determined. The level of cyclic AMP (cAMP) in lung tissue was assessed by ELISA. The expression of AQP5 protein was determined by western blotting and immunohistochemistry. The pathological alteration in lung tissue was evaluated by optical microscopy and electron microscope, and lung injury score was assessed. RESULTS Dobutamine increased AQP5 protein expression and cAMP level in a dose-dependent manner. Meanwhile, the degree of lung pathological and ultrastructural lesion was ameliorated and arterial blood gas was improved obviously. Additionally, W/D ratio and histological scores decreased significantly. However, the AQP5 protein expression and cAMP level were significantly decreased in group ALI + Dob (H) + ICI than that in group ALI + Dob (H), the degree of lung pathological and ultrastructural lesion was more serious in group ALI + Dob (H) + ICI than that in group ALI + Dob (H) and the arterial blood gas was not obviously improved. CONCLUSIONS These results suggested that protective effect of dobutamine against endotoxin shock-induced ALI may be due to its ability of up-regulating AQP5 protein expression via increasing intracellular cAMP concentration.
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Affiliation(s)
- Cai-Zhi Sun
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Hua Shen
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Xiao-Wei He
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Lei Bao
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Yang Song
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Zheng Zhang
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Hai-Dong Qin
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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25
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Holm A, Karlsson T, Vikström E. Pseudomonas aeruginosa lasI/rhlI quorum sensing genes promote phagocytosis and aquaporin 9 redistribution to the leading and trailing regions in macrophages. Front Microbiol 2015; 6:915. [PMID: 26388857 PMCID: PMC4558532 DOI: 10.3389/fmicb.2015.00915] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/21/2015] [Indexed: 12/11/2022] Open
Abstract
Pseudomonas aeruginosa controls production of its multiple virulence factors and biofilm development via the quorum sensing (QS) system. QS signals also interact with and affect the behavior of eukaryotic cells. Host water homeostasis and aquaporins (AQP) are essential during pathological conditions since they interfere with the cell cytoskeleton and signaling, and hereby affect cell morphology and functions. We investigated the contribution of P. aeruginosa QS genes lasI/rhlI to phagocytosis, cell morphology, AQP9 expression, and distribution in human macrophages, using immunoblotting, confocal, and nanoscale imaging. Wild type P. aeruginosa with a functional QS system was a more attractive prey for macrophages than the lasI/rhlI mutant lacking the production of QS molecules, 3O-C12-HSL, and C4-HSL, and associated virulence factors. The P. aeruginosa infections resulted in elevated AQP9 expression and relocalization to the leading and trailing regions in macrophages, increased cell area and length; bacteria with a functional QS system lasI/rhlI achieved stronger responses. We present evidence for a new role of water fluxes via AQP9 during bacteria–macrophage interaction and for the QS system as an important stimulus in this process. These novel events in the interplay between P. aeruginosa and macrophages may influence on the outcome of infection, inflammation, and development of disease.
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Affiliation(s)
- Angelika Holm
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
| | - Thommie Karlsson
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
| | - Elena Vikström
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University Linköping, Sweden
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26
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da Cunha LG, Ferreira MF, de Moraes JA, Reis PA, Castro-Faria-Neto HC, Barja-Fidalgo C, Plotkowski MC, Saliba AM. ExoU-induced redox imbalance and oxidative stress in airway epithelial cells during Pseudomonas aeruginosa pneumosepsis. Med Microbiol Immunol 2015; 204:673-80. [PMID: 25904542 PMCID: PMC7100071 DOI: 10.1007/s00430-015-0418-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 04/12/2015] [Indexed: 12/14/2022]
Abstract
ExoU is a potent proinflammatory toxin produced by Pseudomonas aeruginosa, a major agent of severe lung infection and sepsis. Because inflammation is usually associated with oxidative stress, we investigated the effect of ExoU on free radical production and antioxidant defense mechanisms during the course of P. aeruginosa infection. In an experimental model of acute pneumonia, ExoU accounted for increased lipid peroxidation in mice lungs as soon as 3 h after intratracheal instillation of PA103 P. aeruginosa strain. The contribution of airway cells to the generation of a redox imbalance was assessed by in vitro tests carried out with A549 airway epithelial cells. Cultures infected with the ExoU-producing PA103 P. aeruginosa strain produced significantly increased concentrations of lipid hydroperoxides, 8-isoprostane, reactive oxygen intermediates, peroxynitrite and nitric oxide (NO), when compared to cells infected with exoU-deficient mutants. Overproduction of NO by PA103-infected cells likely resulted from overexpression of both inducible and endothelial NO synthase isoforms. PA103 infection was also associated with a significantly increased activity of superoxide dismutase (SOD) and decreased levels of reduced glutathione (GSH), a major antioxidant compound. Our findings unveil another potential mechanism of tissue damage during infection by ExoU-producing P. aeruginosa strains.
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Affiliation(s)
- Luiz Gonzaga da Cunha
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Av. 28 de Setembro, 87, Fundos, 3° andar, Vila Isabel, Rio de Janeiro, RJ, 20.551-030, Brazil
| | - Miriam Francisca Ferreira
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Av. 28 de Setembro, 87, Fundos, 3° andar, Vila Isabel, Rio de Janeiro, RJ, 20.551-030, Brazil
| | - João Alfredo de Moraes
- Laboratório de Farmacologia Celular e Molecular, Departamento de Biologia Celular, IBRAG, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Patricia Alves Reis
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | | | - Christina Barja-Fidalgo
- Laboratório de Farmacologia Celular e Molecular, Departamento de Biologia Celular, IBRAG, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Maria-Cristina Plotkowski
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Av. 28 de Setembro, 87, Fundos, 3° andar, Vila Isabel, Rio de Janeiro, RJ, 20.551-030, Brazil
| | - Alessandra Mattos Saliba
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Av. 28 de Setembro, 87, Fundos, 3° andar, Vila Isabel, Rio de Janeiro, RJ, 20.551-030, Brazil.
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27
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Li FX, Huang LZ, Dong C, Wang JP, Wu HJ, Shuang SM. Down-regulation of aquaporin3 expression by lipopolysaccharide via p38/c-Jun N-terminal kinase signalling pathway in HT-29 human colon epithelial cells. World J Gastroenterol 2015; 21:4547-4554. [PMID: 25914463 PMCID: PMC4402301 DOI: 10.3748/wjg.v21.i15.4547] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 12/07/2014] [Accepted: 01/08/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the influence of lipopolysaccharide (LPS) through the p38/c-Jun N-terminal kinase (JNK) signalling pathway on aquaporin 3 (AQP3) expression in HT-29 human colon epithelial cells.
METHODS: HT-29 cells were treated with LPS, and then the membrane localisation of AQP3 was examined by immunofluorescence staining. The mRNA and protein expression of AQP3 with LPS exposure was measured by real-time reverse transcription-PCR and Western blot, respectively. Activation of p38 and JNK was evaluated by detection of phosphorylation of p38 and JNK using Western blot assay. AQP3 protein expression was determined by Western blot in cells after treatment with SB203580, a selective p38 MAPK inhibitor, or SP600125, a selective JNK inhibitor.
RESULTS: In HT-29 cells, the transcription and protein expression of AQP3 were decreased by LPS in a dose- and time-dependent manner, the expression of AQP3 was significantly decreased with the increased concentration of LPS, and at a dose of 100 μg/mL LPS, AQP3 mRNA and protein levels were decreased by a maximum (P < 0.05) of 1.51-fold and 1.49-fold, respectively. When cells were treated with 100 μg/mL LPS for 0, 3, 6, 12, and 24 h, the AQP3 mRNA level was significantly decreased at an early time point of 3 h, and reached about 10% of the control level at 24 h post-treatment (P < 0.05). Down-regulation of AQP3 expression was significantly inhibited by the p38 inhibitor (SB203580) and JNK inhibitor (SP600125).
CONCLUSION: p38 and JNK may be promising targets for the preservation of AQP3 expression and may be beneficial to the clinical management of diarrhoea.
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Singha O, Kengkoom K, Chaimongkolnukul K, Cherdyu S, Pongponratn E, Ketjareon T, Panavechkijkul Y, Ampawong S. Pulmonary edema due to oral gavage in a toxicological study related to aquaporin-1, -4 and -5 expression. J Toxicol Pathol 2013; 26:283-91. [PMID: 24155561 PMCID: PMC3787606 DOI: 10.1293/tox.26.283] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 04/05/2013] [Indexed: 11/19/2022] Open
Abstract
A one-time oral gavage can be enough to cause of alveologenic edema with higher expression of AQP-1 and -4 than that with repeated-dose oral gavage, which caused both profound perivascular edema and hydrostatic pressure edema, while AQP-5 was similarly expressed. The alteration of AQPs expression was probably related to alveolar fluid clearance across the alveolar and bronchiolar epithelium in different stages of lung injury. The results clarified the type of lung edema in acute and sub-chronic toxicity studies without treatment related effect of tested material. The pathogenesis of pulmonary edema due to oral gavage toxicological study is associated with the cellular immune response to the reflux materials. Mast cell and leukocyte accumulation may contribute to increase vascular permeability leading to permeability edema. The increase in alveolar septum epithelium, perivascular and peribronchial cuffing, accumulation alveolar lipid containing macrophage and medial hyperplasia of the pulmonary artery might have been caused to increase airway resistance, which resulted in hydrostatic pressure edema.
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Affiliation(s)
- Ornuma Singha
- Veterinary Medical Care Office, National Laboratory Animal Center, Mahidol University, 999 Salaya, Puttamonthon, Nakhon Pathom 73170, Thailand
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29
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Jin W, Rong L, Liu Y, Song Y, Li Y, Pan J. Increased claudin-3, -4 and -18 levels in bronchoalveolar lavage fluid reflect severity of acute lung injury. Respirology 2013; 18:643-51. [PMID: 23253121 DOI: 10.1111/resp.12034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 10/09/2012] [Indexed: 11/30/2022]
Affiliation(s)
| | - Linyi Rong
- Department of Pulmonary Medicine; Zhongshan Hospital, Fudan University; Shanghai; China
| | | | | | | | - Jue Pan
- Department of Pulmonary Medicine; Zhongshan Hospital, Fudan University; Shanghai; China
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30
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Lee J, Bottje WG, Kong BW. Genome-wide host responses against infectious laryngotracheitis virus vaccine infection in chicken embryo lung cells. BMC Genomics 2012; 13:143. [PMID: 22530940 PMCID: PMC3353197 DOI: 10.1186/1471-2164-13-143] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2011] [Accepted: 04/24/2012] [Indexed: 12/20/2022] Open
Abstract
Background Infectious laryngotracheitis virus (ILTV; gallid herpesvirus 1) infection causes high mortality and huge economic losses in the poultry industry. To protect chickens against ILTV infection, chicken-embryo origin (CEO) and tissue-culture origin (TCO) vaccines have been used. However, the transmission of vaccine ILTV from vaccinated- to unvaccinated chickens can cause severe respiratory disease. Previously, host cell responses against virulent ILTV infections were determined by microarray analysis. In this study, a microarray analysis was performed to understand host-vaccine ILTV interactions at the host gene transcription level. Results The 44 K chicken oligo microarrays were used, and the results were compared to those found in virulent ILTV infection. Total RNAs extracted from vaccine ILTV infected chicken embryo lung cells at 1, 2, 3 and 4 days post infection (dpi), compared to 0 dpi, were subjected to microarray assay using the two color hybridization method. Data analysis using JMP Genomics 5.0 and the Ingenuity Pathway Analysis (IPA) program showed that 213 differentially expressed genes could be grouped into a number of functional categories including tissue development, cellular growth and proliferation, cellular movement, and inflammatory responses. Moreover, 10 possible gene networks were created by the IPA program to show intermolecular connections. Interestingly, of 213 differentially expressed genes, BMP2, C8orf79, F10, and NPY were expressed distinctly in vaccine ILTV infection when compared to virulent ILTV infection. Conclusions Comprehensive knowledge of gene expression and biological functionalities of host factors during vaccine ILTV infection can provide insight into host cellular defense mechanisms compared to those of virulent ILTV.
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Affiliation(s)
- Jeongyoon Lee
- Department of Poultry Science, Division of Agriculture, POSC O-404, 1260 West Maple, Fayetteville, AR 72701, USA
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