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Guo W, Li H, Lou Y, Zhang Y, Wang J, Qian M, Wei H, Xiao J, Xu Y. Tyloxapol inhibits RANKL-stimulated osteoclastogenesis and ovariectomized-induced bone loss by restraining NF-κB and MAPK activation. J Orthop Translat 2021; 28:148-158. [PMID: 33981577 PMCID: PMC8063697 DOI: 10.1016/j.jot.2021.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/23/2021] [Accepted: 01/27/2021] [Indexed: 12/21/2022] Open
Abstract
Objective Tyloxapol is a non-ionic surfactant with diverse pharmacological effects including anti-inflammatory, anti-malignant tumor and antioxidant activities. However, the effect of tyloxapol on osteoclastogenesis has not been elucidated. In this study, we intended to clarify the effect of tyloxapol on RANKL-stimulated osteoclastogenesis and the molecular mechanism both ex vivo and in vivo. Methods In vitro osteoclastogenesis assay was performed in BMMs and Raw 264.7 cells. The mature osteoclasts were visualized by TRAP staining. The osteoblsats were visualized by alkaline phosphatase (ALP) staining and Von Kossa staining. To assess whether tyloxapol inhibited the function of mature osteoclasts, F-actin belts and pit formation assays were carried out in BMMs. To evaluate the effect of tyloxapol on post-menopausal osteoporosis, the OVX mouse model were utilized. The bone tissue TRAP staining was used to evaluate the osteoclast activity in vivo. The von kossa staining and micro computed tomography were used to evaluate the histomorphometric parameters. The Goldner's staining was used to evaluate the osteoblast activity. The expression of osteoclastogenesis-associated markers were evaluated by Real-time PCR. The NF-κB and NFATc1 transcriptional activities were illustrated utilizing the assay of luciferase reporter. The effect of tyloxapol pretreatment on IκBa degradation and p65 phosphorylation was evaluated using Western bloting assay. The effect of tyloxapol pretreatment on p65 nuclear translocation was evaluated utilizing immunofluorescence. The effect of tyloxapol pretreatment on the phosphorylatio of ERK, p38 and JNK was examined utilizing Western bloting assay. Results In our research, we found that tyloxapol suppresses RANKL-stimulated osteoclastogenesis in a dose dependent manner and in the initial stage of osteoclastogenesis. Through F-actin belts and pit formation assays, we found that tyloxapol had the ability to inhibit the function of mature osteoclasts in vitro. The results of animal experiments demonstrated that tyloxapol inhibits OVX-induced bone mass loss by inhibiting the activity of osteoclasts but had a limited effect on osteoblastic differentiation and mineralization. Molecularly, we found that tyloxapol suppresses RANKL-stimulated NF-κB activation through suppressing degradation of IκBα, phosphorylation and nuclear translocation of p65. At last, MAPK signaling pathway was also suppressed by tyloxapol in dose and time-dependent manners. Conclusion Our research illustrated that tyloxapol was able to suppress osteoclastogenesis in vitro and ovariectomized-induced bone loss in vivo by restraining NF-κB and MAPK activation. This is pioneer research could pave the way for the development of tyloxapol as a potential therapeutic treatment for osteoporosis. The translational potential of this article This study explores that tyloxapol, also known as Triton WR-1339, may be a drug candidate for osteoclastogenic sicknesses like osteoporosis. Our study may also extend the clinical therapeutic spectrum of tyloxapol.
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Affiliation(s)
- Wen Guo
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China.,Department of Orthopedics, Taizhou People's Hospital, Taizhou, 225300, Jiangsu, China
| | - Haijun Li
- Department of Orthopedics, Taizhou People's Hospital, Taizhou, 225300, Jiangsu, China
| | - Yan Lou
- Orthopaedic Oncology Center, Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, 200000, China
| | - Yue Zhang
- Orthopaedic Oncology Center, Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, 200000, China
| | - Jia Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271016, Shandong, China
| | - Ming Qian
- Orthopaedic Oncology Center, Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, 200000, China
| | - Haifeng Wei
- Orthopaedic Oncology Center, Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, 200000, China
| | - Jianru Xiao
- Orthopaedic Oncology Center, Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, 200000, China
| | - Youjia Xu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China.,Osteoporosis Institute, Soochow University, Suzhou, 215004, China
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Hsieh PC, Kuo CY, Wu CP, Yue CT, Peng CK, Huang KL, Lan CC. Nonionic surfactant attenuates acute lung injury by restoring epithelial integrity and alveolar fluid clearance. Int J Med Sci 2021; 18:1363-1374. [PMID: 33628092 PMCID: PMC7893557 DOI: 10.7150/ijms.51905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/06/2021] [Indexed: 01/09/2023] Open
Abstract
Introduction: Acute lung injury (ALI) has a great impact and a high mortality rate in intensive care units (ICUs). Excessive air may enter the lungs, causing pulmonary air embolism (AE)-induced ALI. Some invasive iatrogenic procedures cause pulmonary AE-induced ALI, with the presentation of severe inflammatory reactions, hypoxia, and pulmonary hypertension. Pulmonary surfactants are vital in the lungs to reduce the surface tension and inflammation. Nonionic surfactants (NIS) are a kind of surfactants without electric charge on their hydrophilic parts. Studies on NIS in AE-induced ALI are limited. We aimed to study the protective effects and mechanisms of NIS in AE-induced ALI. Materials and methods: Five different groups (n = 6 in each group) were created: sham, AE, AE + NIS pretreatment (0.5 mg/kg), AE + NIS pretreatment (1 mg/kg), and AE + post-AE NIS (1 mg/kg). AE-induced ALI was introduced by the infusion of air via the pulmonary artery. Aerosolized NIS were administered via tracheostomy. Results: Pulmonary AE-induced ALI showed destruction of the alveolar cell integrity with increased pulmonary microvascular permeability, pulmonary vascular resistance, pulmonary edema, and lung inflammation. The activation of nuclear factor-κB (NF-κB) increased the expression of pro-inflammatory cytokines, and sodium-potassium-chloride co-transporter isoform 1 (NKCC1). The pretreatment with NIS (1 mg/kg) prominently maintained the integrity of the epithelial lining and suppressed the expression of NF-κB, pro-inflammatory cytokines, and NKCC1, subsequently reducing AE-induced ALI. Conclusions: NIS maintained the integrity of the epithelial lining and suppressed the expression of NF-κB, pro-inflammatory cytokines, and NKCC1, thereby reducing hyperpermeability, pulmonary edema, and inflammation in ALI.
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Affiliation(s)
- Po-Chun Hsieh
- Department of Chinese Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chan-Yen Kuo
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chin-Pyng Wu
- Department of Critical Care Medicine, Landseed International Hospital, Tao-Yuan City, Taiwan
| | - Chung-Tai Yue
- Department of Anatomic Pathology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; Department of Pathology, Buddhist Tzu Chi University, Hualien, Taiwan
| | - Chung-Kan Peng
- Division of Pulmonary Medicine, Tri-Service General Hospital, Taipei, Taiwan; Institute of Undersea and Hyperbaric Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Kun-Lun Huang
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
- Division of Pulmonary Medicine, Tri-Service General Hospital, Taipei, Taiwan; Institute of Undersea and Hyperbaric Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Chou-Chin Lan
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; School of Medicine, Tzu-Chi University, Hualien, Taiwan
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Fernández-Martínez E, Lira-Islas IG, Cariño-Cortés R, Soria-Jasso LE, Pérez-Hernández E, Pérez-Hernández N. Dietary chia seeds (Salvia hispanica) improve acute dyslipidemia and steatohepatitis in rats. J Food Biochem 2019; 43:e12986. [PMID: 31489674 DOI: 10.1111/jfbc.12986] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/27/2019] [Accepted: 06/30/2019] [Indexed: 02/06/2023]
Abstract
Chia seeds (Salvia hispanica L.) are rich in omega fatty acids. Dyslipidemia and steatohepatitis are diseases that require effective treatments in obese and non-obese patients. The aim was to evaluate the effect of chia intake on acute tyloxapol (TI)-induced dyslipidemia, on acute carbon tetrachloride (TC)-induced steatohepatitis, and on mixed damage (TC+TI) in non-obese rats. Four experimental groups were fed for 4 weeks a diet with established rodent food (DE), and four groups were fed a diet with 15% added chia (DC). Plasma samples were analyzed for total cholesterol, triglycerides, glucose, biochemical liver damage markers, and tumor necrosis factor-α (TNF-α). Liver samples were used to quantify glycogen, catalase, lipid peroxidation, and TNF-α. A histopathological analysis was performed. DC intake partially or totally prevented steatohepatitis, and reduced lipids in the dyslipidemic groups. The hypolipidemic and hepatoprotective effects of chia may be correlated to its high content of α-linolenic acid (omega-3) and phenolics. PRACTICAL APPLICATIONS: Metabolic syndrome is associated with non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH), which are currently the most common causes of chronic liver disease, cirrhosis, and hepatocellular carcinoma (HCC) worldwide. Dyslipidemia is a significant risk factor for NAFLD and NASH. Non-obese patients may have NAFLD or NASH. Metabolic syndrome and dyslipidemia are more strongly associated with NAFLD in non-obese than in obese patients. This is the first study evaluating the hypolipidemic and hepatoprotective effects of chia seed intake on acute dyslipidemia and/or steatohepatitis caused by the individual or combined administration of the inducers tyloxapol and carbon tetrachloride, respectively, in non-obese rats. The pharmacological effects of dietary chia are correlated to its high content of omega-3 and omega-6 (1:1), protein, dietary fiber, and phenolics. The results suggest that inclusion of chia in diets of non-obese patients with dyslipidemia and/or NAFLD/NASH may improve their health state and preventing cirrhosis or HCC.
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Affiliation(s)
- Eduardo Fernández-Martínez
- Laboratory of Medicinal Chemistry and Pharmacology, Centro de Investigación en Biología de la Reproducción, Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, México
| | - Ivet G Lira-Islas
- Laboratory of Medicinal Chemistry and Pharmacology, Centro de Investigación en Biología de la Reproducción, Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, México
| | - Raquel Cariño-Cortés
- Laboratory of Medicinal Chemistry and Pharmacology, Centro de Investigación en Biología de la Reproducción, Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, México
| | - Luis E Soria-Jasso
- Laboratory of Medicinal Chemistry and Pharmacology, Centro de Investigación en Biología de la Reproducción, Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, México
| | | | - Nury Pérez-Hernández
- Programa Institucional de Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Ciudad de México, México
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Daull P, Barabino S, Feraille L, Kessal K, Docquier M, Parsadaniantz SM, Baudouin C, Garrigue JS. Modulation of Inflammation-Related Genes in the Cornea of a Mouse Model of Dry Eye upon Treatment with Cyclosporine Eye Drops. Curr Eye Res 2019; 44:476-485. [PMID: 30664361 DOI: 10.1080/02713683.2018.1563197] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Purpose/Aim: Inflammation is recognized as playing an etiological role in dry eye disease. This study aimed to assess the efficacy of various topical cyclosporine A (CsA) formulations on cornea inflammatory markers in a mouse model of dry eye. MATERIAL AND METHODS Six- to 7-week-old mice treated with scopolamine were housed in a controlled environment room to induce dry eye. Following dry eye confirmation by corneal fluorescein staining (CFS), the mice were treated three times a day with: 0.05%CsA (Restasis, Allergan), 0.1%CsA (Ikervis, Santen), 1%CsA oil solution, and 0.5% loteprednol etabonate (LE, Lotemax, Baush+Lomb), or left untreated. Aqueous tear production and CFS scores were assessed during the treatment period, and corneas were collected to measure the expression profile of a selection of inflammatory genes. RESULTS After 7 days of treatment, the CFS scores were reduced by 21%, 31%, and 44% with 0.05%CsA, 0.1%CsA, and 1%CsA eye drops, respectively. By contrast, 0.5% LE did not decrease corneal fluorescein staining at day 10. A statistically significant dose-dependent CFS reduction was observed only between the 0.05% and 1%CsA formulations. The gene expression profiles indicated that 12, 18, 17 genes were downregulated by 0.05%CsA, 0.1%CsA, 1%CsA, respectively. Among them, the genes significantly downregulated were: IL1A, IL1R1, and TLR4 with 0.05%CsA; H2-Eb1, IL1A, IL1B, IL1RN, IL6, TGFB2, TGFB3, TLR2, TLR3, and TLR4 with 0.1%CsA; IL1B, IL6, TGFB3, and TLR4 with 1%CsA. TGFB1 and TGFBR1 were the only genes upregulated in all groups, but only TGFB1 upregulation reached significance. IL6RA was significantly upregulated by 0.05%CsA. CONCLUSIONS This study indicates that the three CsA formulations effectively modulated TLR4, TGFβ1, IL1, and IL6 pathways to reduce corneal epithelium lesions in a mouse model of severe dry eye. The study also suggests that the different anti-inflammatory eye drops modulated inflammatory genes in a slightly different manner.
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Affiliation(s)
- Philippe Daull
- a Novagali Innovation Center , SANTEN SAS, Novagali Innovation Center , Evry Cedex , France
| | - Stefano Barabino
- b Ocular Surface & Dry Eye Center, Ospedale L. Sacco, University of Milan , Milan , Italy
| | - Laurence Feraille
- c Iris Pharma, Les Nertières, Allée Hector Pintus , La Gaude , France
| | - Karima Kessal
- d Vision Institute UMR S 968, UMR 7210 CNRS, Paris Sorbonne Universités , Paris , France
| | - Mylene Docquier
- e iGE3 , University of Geneva Medical School , Geneva 4 , Switzerland
| | | | - Christophe Baudouin
- d Vision Institute UMR S 968, UMR 7210 CNRS, Paris Sorbonne Universités , Paris , France.,f CHNO XV-XX Hospital , Paris , France
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Koppitz M, Eschenburg C, Salzmann E, Rosewich M, Schubert R, Zielen S. Mucolytic Effectiveness of Tyloxapol in Chronic Obstructive Pulmonary Disease - A Double-Blind, Randomized Controlled Trial. PLoS One 2016; 11:e0156999. [PMID: 27308826 PMCID: PMC4911120 DOI: 10.1371/journal.pone.0156999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 05/23/2016] [Indexed: 11/19/2022] Open
Abstract
Objective Mucoactive drugs should increase the ability to expectorate sputum and, ideally, have anti-inflammatory properties. The aim of the study was to evaluate the mucolytic activity of Tyloxapol compared to saline (0.9%) in COPD. Design A randomized, placebo-controlled, double-blinded crossover, clinical trial was carried out. Patients were randomly assigned to either inhale 5 ml Tyloxapol 1% or saline 0.9% solution three times daily for 3 weeks and vice versa for another 3 weeks. 28 patients (18 male, 10 female, 47 to 73 years old, median age 63.50) were screened, 21 were treated and 19 patients completed the study per protocol. Results A comparison of the two treatment phases showed that the primary endpoint sputum weight was statistically significant higher when patients inhaled Tyloxapol (mean 4.03 g, 95% CI: 2.34–5.73 g at week 3) compared to saline (mean 2.63 g, 95% CI: 1.73–3.53 g at week 3). The p-value at three weeks of treatment was 0.041 between treatment arms. Sputum cells decreased during the Tyloxapol treatment after 3 weeks, indicating that Tyloxapol might have some anti-neutrophilic properties. Lung function parameters (FVC, FEV1, RV, and RV/TLC) remained stable during the study, and no treatment effect was shown. Interestingly, there was a mean increase in all inflammatory cytokines (IL-1β, IL-6, and IL-8) during the saline treatment from day 1 to week 3, whereas during the Tyloxapol treatment, all cytokines decreased. Due to the small sample size and the large individual variation in sputum cytokines, these differences were not significant. However, analyses confirmed that Tyloxapol has significant anti-inflammatory properties in vitro. Despite the high number of inhalations (more than 1000), only 27 adverse events (20 during the Tyloxapol and seven during saline) were recorded. Eleven patients experienced AEs under Tyloxapol and six under saline treatment, which indicates that inhalation of saline or Tyloxapol is a very safe procedure. Conclusion Our study demonstrated that inhalation of Tyloxapol by patients with COPD is safe and superior to saline and has some anti-inflammatory effects. Trial Registration ClinicalTrials.gov NCT02515799
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Affiliation(s)
- Martin Koppitz
- Department for Children and Adolescents, Division for Allergology, Pneumology and Cystic Fibrosis, University Hospital Goethe University, Frankfurt am Main, Germany
| | - Charlotte Eschenburg
- Department for Children and Adolescents, Division for Allergology, Pneumology and Cystic Fibrosis, University Hospital Goethe University, Frankfurt am Main, Germany
| | - Emilia Salzmann
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Goethe University, Frankfurt am Main, Germany
| | - Martin Rosewich
- Department for Children and Adolescents, Division for Allergology, Pneumology and Cystic Fibrosis, University Hospital Goethe University, Frankfurt am Main, Germany
| | - Ralf Schubert
- Department for Children and Adolescents, Division for Allergology, Pneumology and Cystic Fibrosis, University Hospital Goethe University, Frankfurt am Main, Germany
| | - Stefan Zielen
- Department for Children and Adolescents, Division for Allergology, Pneumology and Cystic Fibrosis, University Hospital Goethe University, Frankfurt am Main, Germany
- * E-mail:
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Beubler E, Fischer R, Untersteiner G, Strohmaier W. Influence of the Surfactant Tyloxapol on Mucociliary Clearance in Human Respiratory Cystic Fibrosis Cells. Pharmacology 2016; 98:1-3. [PMID: 26949944 DOI: 10.1159/000444589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 11/19/2022]
Abstract
Dehydration of the apical surface of cystic fibrosis (CF) airway epithelia leads to a greatly impaired mucociliary clearance function in CF patients. In an in vitro cell model of human airway epithelia taken from CF patients and cultivated for 60 days, mucociliary clearance was zero. Tyloxapol, a synthetic surfactant, is able to restore the mucociliary clearance of the CF epithelia. The velocity of mucociliary clearance, using polystyrene microbeads as markers, increased within the first minute of tyloxapol treatment from zero to 12 µm/s and reached a maximum of 22 µm/s after 120 min. In conclusion, tyloxapol restores mucociliary clearance in a MucilAir™-CF model and may accordingly be efficient in CF patients to restore mucociliary clearance.
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Affiliation(s)
- Eckhard Beubler
- Department of Experimental and Clinical Pharmacology, Medical University Graz, Graz, Austria
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The comparative efficacy of tyloxapol versus pentoxifylline against induced acute phase response in an ovine experimental endotoxemia model. Inflammopharmacology 2015; 24:59-64. [DOI: 10.1007/s10787-015-0257-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022]
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Identification of pharmacological modulators of HMGB1-induced inflammatory response by cell-based screening. PLoS One 2013; 8:e65994. [PMID: 23799067 PMCID: PMC3682954 DOI: 10.1371/journal.pone.0065994] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 05/01/2013] [Indexed: 12/31/2022] Open
Abstract
High mobility group box 1 (HMGB1), a highly conserved, ubiquitous protein, is released into the circulation during sterile inflammation (e.g. arthritis, trauma) and circulatory shock. It participates in the pathogenesis of delayed inflammatory responses and organ dysfunction. While several molecules have been identified that modulate the release of HMGB1, less attention has been paid to identify pharmacological inhibitors of the downstream inflammatory processes elicited by HMGB1 (C23-C45 disulfide C106 thiol form). In the current study, a cell-based medium-throughput screening of a 5000+ compound focused library of clinical drugs and drug-like compounds was performed in murine RAW264.7 macrophages, in order to identify modulators of HMGB1-induced tumor-necrosis factor alpha (TNFα) production. Clinically used drugs that suppressed HMGB1-induced TNFα production included glucocorticoids, beta agonists, and the anti-HIV compound indinavir. A re-screen of the NIH clinical compound library identified beta-agonists and various intracellular cAMP enhancers as compounds that potentiate the inhibitory effect of glucocorticoids on HMGB1-induced TNFα production. The molecular pathways involved in this synergistic anti-inflammatory effect are related, at least in part, to inhibition of TNFα mRNA synthesis via a synergistic suppression of ERK/IκB activation. Inhibition of TNFα production by prednisolone+salbutamol pretreatment was also confirmed in vivo in mice subjected to HMGB1 injection; this effect was more pronounced than the effect of either of the agents administered separately. The current study unveils several drug-like modulators of HMGB1-mediated inflammatory responses and offers pharmacological directions for the therapeutic suppression of inflammatory responses in HMGB1-dependent diseases.
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Wright JG, Christman JW. The Role of Nuclear Factor Kappa B in the Pathogenesis of Pulmonary Diseases: Implications for Therapy. ACTA ACUST UNITED AC 2012; 2:211-9. [PMID: 14720003 DOI: 10.1007/bf03256650] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The nuclear factor kappa B (NF-kappaB) transcription factor plays a key role in the induction of pro-inflammatory gene expression, leading to the synthesis of cytokines, adhesion molecules, chemokines, growth factors and enzymes. Results of studies in in vitro and in vivo models of inflammation and malignancy have also suggested central roles for NF-kappaB in programmed cell death, or apoptosis. NF-kappaB plays a central role in a variety of acute and chronic inflammatory diseases. In the common lung diseases associated with a significant inflammatory component such as severe sepsis, acute lung injury, acute respiratory distress syndrome, cystic fibrosis and asthma, the pathogenic roles of NF-kappaB have been extensively investigated. In COPD, activation of NF-kappaB has been implicated in disease pathogenesis but its exact role is less clearly demonstrable in this heterogeneous patient population. However, the principal risk factor for COPD, cigarette smoking, is strongly associated with NF-kappaB activation. Activation of NF-kappaB has been demonstrated in mineral dust diseases and probably plays a role in the pathogenesis of these chronic illnesses. NF-kB also plays a variety of roles in lung cancer including resistance to chemotherapy, inhibition of tumorigenesis and inducing expression of antiapoptotic genes. The complex NF-kappaB pathway offers a variety of potential molecular targets for chemotherapeutic intervention. A variety of agents aimed at modulating NF-kappaB activity are in various stages of investigation.
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Affiliation(s)
- Jeffrey G Wright
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 27232-2650, USA
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Kuo JHS, Lin YL, Tseng JW. Interactions between U-937 human macrophages and tyloxapol. Colloids Surf B Biointerfaces 2008; 64:208-15. [DOI: 10.1016/j.colsurfb.2008.01.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 01/18/2008] [Accepted: 01/22/2008] [Indexed: 11/25/2022]
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Kuo JHS, Jan MS, Chiu HW. Cytotoxic properties of tyloxapol. Pharm Res 2006; 23:1509-16. [PMID: 16779702 DOI: 10.1007/s11095-006-0281-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Accepted: 02/28/2006] [Indexed: 10/24/2022]
Abstract
PURPOSE Tyloxapol, a viscous polymer of the alkyl aryl polyether alcohol type, is classified as a nonionic surfactant and is widely used in biomedical applications. Although tyloxapol has been reported to be cytotoxic in various cell lines, there is no published information about its possible mechanisms of cell death. Hence, the objective of this study was to determine whether tyloxapol causes apoptosis or necrosis. These data could be helpful for a better understanding of the action of tyloxapol in cellular systems. METHODS RAW 264.7 (murine macrophage-like) cells and NIH/3T3 (mouse fibroblast) cells were treated with tyloxapol, and the activity of dehydrogenases in those cells, an indicator of cell viability, was assessed. The cell morphology changes induced by tyloxapol treatment were detected using propidium iodide nuclear staining. The hallmarks of apoptotic cells were characterized using DNA fragmentation assays, DNA fluorescence staining, and then flow analysis. RESULTS Tyloxapol treatment produced dose- and time-dependent cytotoxicity. Tyloxapol treatment damaged RAW 264.7 cells more than it damaged NIH/3T3 cells. All the cells exposed to tyloxapol showed some morphological features of apoptosis, such as chromatin condensation and cell shrinkage. Typical apoptotic ladders were observed in DNA extracted from tyloxapol-treated cells. Flow cytometric analysis revealed an increase in the hypodiploid DNA population (sub-G1), indicating that DNA cleavage occurred after tyloxapol treatment. In addition, we showed that pretreating cells with zVAD-fmk, a general caspase inhibitor, did not prevent tyloxapol-induced apoptosis. The cytotoxicity of tyloxapol can be reduced by adding a nontoxic lipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine to attenuate the interaction of tyloxapol with the cell membrane. CONCLUSIONS Our results indicate that tyloxapol induces apoptosis in RAW 264.7 and NIH/3T3 cells. These data provide a novel insight into the cytotoxic action of tyloxapol at the molecular level.
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Affiliation(s)
- Jung-hua Steven Kuo
- Graduate Institute of Pharmaceutical Science, Chia Nan University of Pharmacy and Science, 60 Erh-Jen Road, Sec. 1, Jen-Te, Tainan, 717, Taiwan.
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Haddad JJ. Science review: Redox and oxygen-sensitive transcription factors in the regulation of oxidant-mediated lung injury: role for nuclear factor-kappaB. Crit Care 2002; 6:481-90. [PMID: 12493069 PMCID: PMC153445 DOI: 10.1186/cc1839] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The primary role of pulmonary airways is to conduct air to the alveolar epithelium, where gas exchange can efficiently occur. Injuries to airways resulting from inhalation of airborne pollutants and parenteral exposure to ingested pollutants that cause oxidative stress have the potential to interfere with this process. A progressive rise of oxidative stress due to altered reduction-oxidation (redox) homeostasis appears to be one of the hallmarks of the processes that regulate gene transcription in lung physiology and pathophysiology. Reactive metabolites serve as signaling messengers for the evolution and perpetuation of the inflammatory process that is often associated with cell death and degeneration. Redox-sensitive transcription factors are often associated with the development and progression of many human disease states and inflammatory-related injury, particularly of the lung. The present review elaborates on the role of the redox-sensitive and oxygen-sensitive transcription factor NF-kappaB in mediating lung injury. Changes in the pattern of gene expression through regulatory transcription factors are crucial components of the machinery that determines cellular responses to oxidative and redox perturbations. Additionally, the discussion of the possible therapeutic approaches of antioxidants, thiol-related compounds and phosphodiesterase inhibitors as anti-inflammatory agents will thereby help understand the oxidant/redox-mediated lung injury mechanisms.
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Affiliation(s)
- John J Haddad
- Department of Anesthesia and Perioperative Care, University of California at San Francisco, School of Medicine, San Francisco, California, USA.
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Hayashi K, Hosoe H, Kaise T, Ohmori K. Protective effect of erdosteine against hypochlorous acid-induced acute lung injury and lipopolysaccharide-induced neutrophilic lung inflammation in mice. J Pharm Pharmacol 2000; 52:1411-6. [PMID: 11186250 DOI: 10.1211/0022357001777414] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The effect of erdosteine, a mucoactive drug, on hypochlorous acid (HOCl)-induced lung injury, and the lipopolysaccharide (LPS)-induced increase in tumour necrosis factor-alpha (TNF-alpha) production and neutrophil recruitment into the airway, was investigated. Male BALB/c mice were orally administered erdosteine (3-100 mgkg(-1)), ambroxol hydrochloride (ambroxol) (3-30 mgkg(-1)), S-carboxymethyl-L-cysteine (S-CMC) (100-600 mgkg(-1)) or prednisolone (10 mgkg(-1)), 1 h before intratracheal injection of HOCl or LPS. In the HOCl-injected mice, erdosteine markedly suppressed increases in the ratios of lung wet weight to bodyweight and lung dry weight to bodyweight, whereas the other mucoactive drugs ambroxol and S-CMC had little effect. Erdosteine also inhibited the LPS-induced neutrophil influx, although it did not affect the increased level of TNF-alpha in the bronchoalveolar lavage fluid. The results suggest that attenuation of reactive oxygen species and neutrophil recruitment is involved in the clinical efficacy of erdosteine in the treatment of chronic bronchitis.
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Affiliation(s)
- K Hayashi
- Drug Development Research Laboratories, Pharmaceutical Research Institute, Kyowa Hakko Kogyo Co., Ltd, Shizuoka, Japan
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15
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Abstract
Pulmonary complications are by far the most serious complications in cystic fibrosis (CF). In response to endobronchial bacterial infections, the long-term consequences of chronically activated polymorphonuclear leukocytes (neutrophils) are thought to cause loss of lung function and premature death. Effective anti-inflammatory therapy implies that we understand the complex networks of the immune response with its myriads of mediators on effector cells. We have many steps to go in this context, but science has already shed some light on inflammatory mechanisms in CF airways, and anti-inflammatory treatment strategies have been applied clinically with some success. The aim of this chapter is to review our present knowledge, and we will focus on early inflammation, bacterial persistence mechanisms, neutrophil activation, cytokines and nitric oxide together with anti-inflammatory treatment strategies in CF patients.
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Affiliation(s)
- G Döring
- Department of General and Environmental Hygiene, Hygiene-Institute, University of Tübingen, Tübingen, Germany.
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16
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Abstract
Nuclear factor-kappa B (NF-kappaB) is a family of DNA-binding protein factors that are required for transcription of most proinflammatory molecules, including adhesion molecules, enzymes, cytokines, and chemokines. NF-kappaB activation seems to be a key early event in a variety of cell and animal model systems developed to elucidate the pathobiology of lung diseases. The purpose of this short review is to describe what is known about the molecular biology of NF-kappaB and to review information that implicates NF-kappaB in the pathogenesis of lung disease, including ARDS, systemic inflammatory response syndrome, asthma, respiratory viral infections, occupational and environmental lung disease, and cystic fibrosis.
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Affiliation(s)
- J W Christman
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, and the Department of Veterans Affairs, Nashville, TN 27232-2650, USA.
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17
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Abstract
The vertebrate transcription factor NF-kappaB is induced by over 150 different stimuli. Active NF-kappaB, in turn, participates in the control of transcription of over 150 target genes. Because a large variety of bacteria and viruses activate NF-kappaB and because the transcription factor regulates the expression of inflammatory cytokines, chemokines, immunoreceptors, and cell adhesion molecules, NF-kappaB has often been termed a 'central mediator of the human immune response'. This article contains a complete listing of all NF-kappaB inducers and target genes described to date. The collected data argue that NF-kappaB functions more generally as a central regulator of stress responses. In addition, NF-kappaB activation blocks apoptosis in several cell types. Coupling stress responsiveness and anti-apoptotic pathways through the use of a common transcription factor may result in increased cell survival following stress insults.
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Affiliation(s)
- H L Pahl
- Department of Experimental Anesthesiology, University of Freiburg, 79106 Freiburg, Germany
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18
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Update on clinical trials in the treatment of pulmonary disease in patients with cystic fibrosis. Expert Opin Investig Drugs 1999; 8:1917-1927. [PMID: 11139834 DOI: 10.1517/13543784.8.11.1917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cystic fibrosis is a congenital disease resulting from an abnormality of the cystic fibrosis transmembrane conductance regulator (CFTR) gene. A defect in ion transport leads to poor clearance of viscoelastic secretions and a susceptibility to bacterial infection. This initiates a self-perpetuating cycle of infection and inflammation that accounts for the chronic endobronchial sepsis and pulmonary damage observed in patients with cystic fibrosis. Recent studies have attempted to correct the gene defect, enhance the expression and function of the CFTR protein and correct the ion transport defect. Improving the rheological properties of airway secretions, enhancing host defence and controlling inflammation are the other key strategies.
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Affiliation(s)
- B K Rubin
- Department of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1081, USA.
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Thomassen MJ, Buhrow LT, Wiedemann HP. Perflubron decreases inflammatory cytokine production by human alveolar macrophages. Crit Care Med 1997; 25:2045-7. [PMID: 9403756 DOI: 10.1097/00003246-199712000-00023] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To determine whether inflammatory cytokine production by stimulated human alveolar macrophages is affected by perflubron exposure. DESIGN Controlled laboratory investigation of alveolar macrophage function in vitro. SETTING Research laboratory. SUBJECTS Cultured alveolar macrophages obtained by bronchoalveolar lavage from eleven normal volunteers. INTERVENTIONS Endotoxin-stimulated alveolar macrophages were treated with perflubron. MEASUREMENTS AND MAIN RESULTS Alveolar macrophages were stimulated for 1 hr with lipopolysaccharide and then treated with perflubron for 23 hrs. Cell-free supernatants were collected and cytokines were assayed by enzyme-linked immunosorbent assay. Tumor necrosis factor-alpha, interleukin-1, and interleukin-6 were stimulated by lipopolysaccharide (endotoxin) and all of these cytokines were significantly (p < .05) inhibited by perflubron. Cell viability was not affected by perflubron. Basal cytokine concentrations from unstimulated alveolar macrophages were not altered by perflubron. CONCLUSIONS Exposure of stimulated human alveolar macrophages to perflubron in vitro decreases cytokine production. This observation suggests that perflubron may have anti-inflammatory activity.
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Affiliation(s)
- M J Thomassen
- Department of Pulmonary and Critical Care Medicine, The Cleveland Clinic Foundation, OH 44195-5038, USA
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