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Yalaz M, Tanriverdi S, Uygur Ö, Altun Köroğlu Ö, Azarsiz E, Aksu G, Kültürsay N. Early Immunomodulatory Effects of Different Natural Surfactant Preparations in Preterms With Respiratory Distress. Front Pediatr 2022; 10:845780. [PMID: 35372166 PMCID: PMC8971705 DOI: 10.3389/fped.2022.845780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Respiratory distress syndrome (RDS) is the most common respiratory disease in premature infants. Exogenous natural surfactant preparations are used in the treatment of RDS. In recent years, it has become increasingly evident that surfactant plays an immunoregulatory role. OBJECTIVES The aim of this study was to evaluate cytokine and chemokine response following three different regimens of natural surfactant treatment in preterm newborns with RDS. METHODS Premature newborns below 32 weeks of gestation who were intubated for RDS and given early surfactant rescue therapy were included in the study. Newborns were randomly divided into three groups and Beractant 100 mg/kg (B-100), Poractant alfa 100 mg/kg (Pα-100) and Poractant alfa 200 mg/kg (Pα-200) were administered intratracheally. Blood samples and transtracheal aspirates (TA) were collected just before and 4-6 h after the surfactant treatment. Total eosinophil count, inducible T Cell alpha chemoattractant (ITaC), macrophage inflammatory protein 3 beta (MIP3b), interleukins (IL) 5, 8, 9, 10, 13, immunoglobulin E (IgE), interferon gamma (IFN-γ), eotaxin and tumor necrosis factor beta-1 (TGF-β1) were measured from blood and tracheal aspirate samples. RESULTS A total of 45 infants, 15 in each group, were included in the study. Mean gestational age, birth weight, antenatal, demographic and clinical characteristics of the study groups were similar. IFNγ concentration and eosinophil counts in TA decreased after surfactant replacement in all groups, especially in the infants treated with Pα-100 and Pα-200. Eotaxin, TGF beta and IL-8 concentrations in TA increased significantly in the infants treated with Pα-100 and Pα-200. IL-9 levels in TA decreased in the B-100 group but increased in the Pα-100 and Pα-200 groups. Blood levels of cytokines and chemokines showed significantly decreased levels of ITaC and MIP3b only in the B-100 group, but no significant change was observed in the Pα-100 and Pα-200 groups. CONCLUSION In our study, the different immunomodulatory effects of natural surfactant preparations on newborn lung is proven. We found that Poractant α, one of the natural surfactant preparations, shifted the lung immune system toward TH2.
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Affiliation(s)
- Mehmet Yalaz
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
| | - Sema Tanriverdi
- Department of Pediatrics, Division of Neonatology, Manisa Celal Bayar University Medical School, Manisa, Turkey
| | - Özgün Uygur
- Department of Pediatrics, Division of Neonatology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey
| | - Özge Altun Köroğlu
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
| | - Elif Azarsiz
- Department of Pediatrics, Division of Pediatric Immunology, Ege University Medical School, Izmir, Turkey
| | - Guzide Aksu
- Department of Pediatrics, Division of Pediatric Immunology, Ege University Medical School, Izmir, Turkey
| | - Nilgün Kültürsay
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
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Daniher D, McCaig L, Ye Y, Veldhuizen R, Lewis J, Ma Y, Zhu J. Protective effects of aerosolized pulmonary surfactant powder in a model of ventilator-induced lung injury. Int J Pharm 2020; 583:119359. [PMID: 32334066 DOI: 10.1016/j.ijpharm.2020.119359] [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: 06/19/2019] [Revised: 04/14/2020] [Accepted: 04/19/2020] [Indexed: 01/22/2023]
Abstract
Mechanical ventilation may contribute to the impairment of the pulmonary surfactant system, which is one of the mechanisms leading to the progression of acute lung injury. To investigate the potential protective effects of pulmonary surfactant in a rat model of ventilator-induced lung injury, the surfactant powder was aerosolized using an in-house made device designed to deliver the aerosolized powder to the inspiratory line of a rodent ventilator circuit. Rats were randomized to (i) administration of aerosolized recombinant surfactant protein C based pulmonary surfactant, (ii) intratracheally instillation of the same surfactant re-constituted in saline, and (iii) no treatment. Animals were monitored during 2 h of high-tidal volume mechanical ventilation, after which rats were sacrificed, and further analysis of lung mechanics and surfactant function were completed. Blood gas measurements during ventilation showed extended maintenance of oxygen levels above 400 mmHg in aerosol treated animals over non-treated and instilled groups, while total protein analysis showed reduced levels in the aerosol compared to non-treated groups. Dynamic captive bubble surface tension measurements showed the activity of surfactant recovered from aerosol treated animals is maintained below 1 mN/m. The prophylactic treatment of aerosolized surfactant powder reduced the severity of lung injury in this model.
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Affiliation(s)
- Derek Daniher
- Biomedical Engineering Graduate Program, The University of Western Ontario, London, Canada
| | - Lynda McCaig
- Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Canada
| | - Yuqing Ye
- Biomedical Engineering Graduate Program, The University of Western Ontario, London, Canada
| | - Ruud Veldhuizen
- Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Canada
| | - James Lewis
- Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Canada
| | - Yingliang Ma
- Department of Chemical & Biochemical Engineering, The University of Western Ontario, London, Canada
| | - Jesse Zhu
- Biomedical Engineering Graduate Program, The University of Western Ontario, London, Canada; Department of Chemical & Biochemical Engineering, The University of Western Ontario, London, Canada.
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Tripathi MK, Yasir M, Singh P, Shrivastava R. A Comparative Study to Explore the Effect of Different Compounds in Immune Proteins of Human Beings Against Tuberculosis: An In-silico Approach. Curr Bioinform 2020. [DOI: 10.2174/1574893614666190226153553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Background:
The lungs are directly exposed to pollutants, pathogens, allergens, and
chemicals, which might lead to physiological disorders. During the Bhopal gas disaster, the lungs
of the victims were exposed to various chemicals. Here, using molecular modelling studies, we describe
the effects of these chemicals (Dimethyl urea, Trimethyl urea, Trimethyl isocyanurate, Alphanaphthol,
Butylated hydroxytoluene and Carbaryl) on pulmonary immune proteins.
Objective:
In the current study, we performed molecular modelling methods like molecular docking
and molecular dynamics simulation studies to identify the effects of hydrolytic products of
MIC and dumped residues on the pulmonary immune proteins.
Methods:
Molecular docking studies of (Dimethyl urea, Trimethyl urea, Trimethyl isocyanurate,
Alphanaphthol, Butylated hydroxytoluene and Carbaryl) on pulmonary immune proteins was performed
using the Autodock 4.0 tool, and gromacs was used for the molecular dynamics simulation
studies to get an insight into the possible mode of protein-ligand interactions. Further, in silico
ADMET studies was performed using the TOPKAT protocol of discovery studio.
Results:
From docking studies, we found that surfactant protein-D is inhibited most by the chemicals
alphanaphthol (dock score, -5.41Kcal/mole), butylated hydroxytoluene (dock score,-6.86
Kcal/mole), and carbaryl (dock score,-6.1 Kcal/mole). To test their stability, the obtained dock poses
were placed in a lipid bilayer model system mimicking the pulmonary surface. Molecular dynamics
simulations suggest a stable interaction between surfactant protein-D and carbaryl.
Conclusion:
This, study concludes that functioning of surfactant protein-D is directly or indirectly
affected by the carbaryl chemical, which might account for the increased susceptibility of Bhopal
gas disaster survivors to pulmonary tuberculosis.
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Affiliation(s)
- Manish Kumar Tripathi
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Mohammad Yasir
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Pushpendra Singh
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Rahul Shrivastava
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
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Tafuro F, Selis L, Goldoni M, Stendardo M, Mozzoni P, Ridolo E, Boschetto P, Corradi M. Biomarkers of respiratory allergy in laboratory animal care workers: an observational study. Int Arch Occup Environ Health 2018; 91:735-744. [PMID: 29858653 DOI: 10.1007/s00420-018-1321-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 05/22/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVES Laboratory animal allergy is a highly prevalent occupational disease among exposed workers. The aim of the study was to validate the biomarkers of airway inflammation in laboratory animal (LA) care workers. METHODS All of the participants in this observational study (63 LA care workers and 64 controls) were administered a clinical questionnaire, underwent spirometry and a skin prick or radioallergosorbent test for common and occupational aeroallergens, and the fraction of exhaled nitric oxide (FeNO50), exhaled breath condensate hydrogen peroxide (EBC H2O2) and serum pneumoprotein levels were measured. Multivariate analysis (ANCOVA) was used to assess the interactions of the variables. RESULTS FeNO50 levels correlated with exposure (p = 0.002), sensitisation (p = 0.000) and age (p = 0.001), but there was no interaction between exposure and sensitisation when age was considered in the model (p = 0.146). EBC-H2O2 levels were higher in the sensitised workers than in the sensitised controls [0.14 (0.08-0.29) µM vs 0.07 (0.05-0.12) µM; p < 0.05]. Serum surfactant protein A (SP-A) levels were unaffected by exposure, sensitisation or age, although higher levels were observed in symptomatic workers; however, SP-D levels were influenced by exposure (p = 0.024) and age (p = 0.022), and club cell 16 levels were influenced by sensitisation (p = 0.027) and age (p = 0.019). CONCLUSIONS The presence of the clinical symptoms associated with LA exposure and high FeNO levels should prompt further medical assessments in LA workers. Although EBC-H2O2 levels do not seem to reflect eosinophilic inflammation, serum SP-A levels could be used to monitor progression from rhinitis to asthma.
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Affiliation(s)
- Federica Tafuro
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Luisella Selis
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Matteo Goldoni
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | | | - Paola Mozzoni
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Erminia Ridolo
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Piera Boschetto
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Massimo Corradi
- Department of Medicine and Surgery, University of Parma, Parma, Italy. .,Unit of Occupational Medicine, Department of Medicine and Surgery, University of Parma, Via Gramsci 14, 43123, Parma, Italy.
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Heiser C, Hofauer B, Scherer E, Schukraft J, Knopf A. Liposomal treatment of xerostomia, odor, and taste abnormalities in patients with head and neck cancer. Head Neck 2015; 38 Suppl 1:E1232-7. [PMID: 26315309 DOI: 10.1002/hed.24198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 06/04/2015] [Accepted: 07/07/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Smell and taste disorders, sicca symptoms, can be detected in patients with head and neck cancer. The purpose of this study was to assess the utility of local liposomal application in the treatment of patients with head and neck cancers. METHODS Ninety-eight patients with head and neck cancer were included in this study. The groups were defined as: group 1 = only surgery; group 2 = surgery + adjuvant radiochemotherapy; and group 3 = primarily radiochemotherapy. All patients had finished cancer treatment and received liposomal sprays for the nose and mouth for 2 months (LipoNasal, LipoSaliva; Optima Pharmaceutical GmbH, Germany) and suffered from taste and smell disorders. We performed tests with "Sniffin' Sticks," "Taste Strips," and a xerostomia questionnaire before and after treatment. RESULTS After application of liposomes, patients demonstrated a statistically significant increase in smell and taste, and reduced xerostomia. CONCLUSION Our results demonstrate that using nonpharmaceutical liposomal sprays improve smell, taste, and symptoms of xerostomia in patients with head and neck cancer. © 2015 Wiley Periodicals, Inc. Head Neck 38: E1232-E1237, 2016.
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Affiliation(s)
- Clemens Heiser
- Department of Otorhinolaryngology, Head and Neck Surgery, Technische Universität München, Munich, Germany
| | - Benedikt Hofauer
- Department of Otorhinolaryngology, Head and Neck Surgery, Technische Universität München, Munich, Germany
| | - Elias Scherer
- Department of Otorhinolaryngology, Head and Neck Surgery, Technische Universität München, Munich, Germany
| | - Johannes Schukraft
- Department of Otorhinolaryngology, Head and Neck Surgery, Technische Universität München, Munich, Germany
| | - Andreas Knopf
- Department of Otorhinolaryngology, Head and Neck Surgery, Technische Universität München, Munich, Germany
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Surfactant protein-A suppresses eosinophil-mediated killing of Mycoplasma pneumoniae in allergic lungs. PLoS One 2012; 7:e32436. [PMID: 22384248 PMCID: PMC3285686 DOI: 10.1371/journal.pone.0032436] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/30/2012] [Indexed: 01/21/2023] Open
Abstract
Surfactant protein-A (SP-A) has well-established functions in reducing bacterial and viral infections but its role in chronic lung diseases such as asthma is unclear. Mycoplasma pneumoniae (Mp) frequently colonizes the airways of chronic asthmatics and is thought to contribute to exacerbations of asthma. Our lab has previously reported that during Mp infection of non-allergic airways, SP-A aides in maintaining airway homeostasis by inhibiting an overzealous TNF-alpha mediated response and, in allergic mice, SP-A regulates eosinophilic infiltration and inflammation of the airway. In the current study, we used an in vivo model with wild type (WT) and SP-A−/− allergic mice challenged with the model antigen ovalbumin (Ova) that were concurrently infected with Mp (Ova+Mp) to test the hypothesis that SP-A ameliorates Mp-induced stimulation of eosinophils. Thus, SP-A could protect allergic airways from injury due to release of eosinophil inflammatory products. SP-A deficient mice exhibit significant increases in inflammatory cells, mucus production and lung damage during concurrent allergic airway disease and infection (Ova+Mp) as compared to the WT mice of the same treatment group. In contrast, SP-A deficient mice have significantly decreased Mp burden compared to WT mice. The eosinophil specific factor, eosinophil peroxidase (EPO), which has been implicated in pathogen killing and also in epithelial dysfunction due to oxidative damage of resident lung proteins, is enhanced in samples from allergic/infected SP-A−/− mice as compared to WT mice. In vitro experiments using purified eosinophils and human SP-A suggest that SP-A limits the release of EPO from Mp-stimulated eosinophils thereby reducing their killing capacity. These findings are the first to demonstrate that although SP-A interferes with eosinophil-mediated biologic clearance of Mp by mediating the interaction of Mp with eosinophils, SP-A simultaneously benefits the airway by limiting inflammation and damage.
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Zhang J, Zheng Q, Zhang H. Insight into the dynamic interaction of different carbohydrates with human surfactant protein D: molecular dynamics simulations. J Phys Chem B 2010; 114:7383-90. [PMID: 20450150 DOI: 10.1021/jp9113078] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The unbinding process of three monosaccharides--galactose, glucose, and mannose--from human surfactant protein D (hSP-D) was investigated by the molecular docking and molecular dynamics methods to explore the cause of different dynamic interaction between these monosaccharides and the protein. The results show that the low affinity of galactose for hSP-D is attributed to the different binding conformation from the other two monosaccharides. The sugar coordinates to the calcium ion by the hydroxyl groups in the C2 and C3 atoms, so it cannot form the effective interaction with hSP-D. Glucose and mannose have similar binding conformations with hSP-D. Their difference in the affinity is induced by the interaction between the hydroxyl group in the C2 atom and the residue Asp325. The direction of the hydroxyl group in mannose results in the formation of the hydrogen bond with Asp325 and further makes mannose hydrogen-bond to the residues Glu329 and Arg343 by the hydroxyl groups in the C3, C4, and C6 atoms. As glucose only forms three hydrogen bonds with the residues Glu321, Asn323, and Glu329 by the hydroxyl groups in the C3 and C4 atoms, its interaction with hSP-D is weaker than that of mannose. Thus glucose has a lower energy barrier of dissociation. This work could provide the more penetrating understanding of hSP-D physiological functions.
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Affiliation(s)
- Jilong Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
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Ledford JG, Pastva AM, Wright JR. Review: Collectins link innate and adaptive immunity in allergic airway disease. Innate Immun 2010; 16:183-90. [PMID: 20418258 DOI: 10.1177/1753425910368446] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Although the lipoprotein complex of pulmonary surfactant has long been recognized as essential for reducing lung surface tension, its role in lung immune host defense has only relatively recently been elucidated. Surfactant-associated proteins A (SP-A) and D (SP-D) can attenuate bacterial and viral infection and inflammation by acting as opsonins and by regulating innate immune cell functions. Surfactant-associated protein A and D also interact with antigen-presenting cells and T cells, thereby linking the innate and adaptive immune systems. A recent study from our laboratory demonstrated that mice deficient in SP-A have enhanced susceptibility to airway hyper-responsiveness and lung inflammation induced by Mycoplasma pneumonia, an atypical bacterium present in the airways of approximately 50% of asthmatics experiencing their first episode, and further supports an important role for SP-A in the host response to allergic airway disease. Animal and human studies suggest that alterations in the functions or levels of SP-A and SP-D are associated with both infectious and non-infectious chronic lung diseases such as asthma. Future studies are needed to elucidate whether alterations in SP-A and SP-D are a consequence and/or cause of allergic airway disease.
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Affiliation(s)
- Julie G Ledford
- Department of Cell Biology, Duke University Medical Center, Durham, North Carolina 27710, USA
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