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https://www.readbyqxmd.com/read/28812256/the-potential-for-emerging-microbiome-mediated-therapeutics-in-asthma
#1
REVIEW
Ayse Bilge Ozturk, Benjamin Arthur Turturice, David L Perkins, Patricia W Finn
PURPOSE OF REVIEW: In terms of immune regulating functions, analysis of the microbiome has led the development of therapeutic strategies that may be applicable to asthma management. This review summarizes the current literature on the gut and lung microbiota in asthma pathogenesis with a focus on the roles of innate molecules and new microbiome-mediated therapeutics. RECENT FINDINGS: Recent clinical and basic studies to date have identified several possible therapeutics that can target innate immunity and the microbiota in asthma...
August 10, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28802277/microbiome-in-lung-explants-of-idiopathic-pulmonary-fibrosis-a-case-control-study-in-patients-with-end-stage-fibrosis
#2
Georgios D Kitsios, Mauricio Rojas, Daniel J Kass, Adam Fitch, John C Sembrat, Shulin Qin, Kristen L Veraldi, Kevin F Gibson, Kathleen Lindell, Joseph M Pilewski, Barbara Methe, Kelvin Li, John McDyer, Bryan J McVerry, Alison Morris
The microbiome has been proposed to play a role in the progression of idiopathic pulmonary fibrosis (IPF) based on bronchoalveolar lavage analyses, but the microbiome of lung tissue in IPF has not been explored. In a case-control study of lung explants analysed by 16S rRNA gene sequencing, we could not reliably detect bacterial DNA in basilar tissue samples from patients with either chronic or acute exacerbations of IPF, in contrast to control candidate-donor lungs or cystic fibrosis explants. Thus, our data do not indicate microbiome alterations in regions of IPF lung with advanced fibrosis...
August 11, 2017: Thorax
https://www.readbyqxmd.com/read/28776643/contributions-of-the-intestinal-microbiome-in-lung-immunity
#3
REVIEW
Jeremy P McAleer, Jay K Kolls
The intestine is a critical site of immune cell development that not only controls intestinal immunity but extra-intestinal immunity as well. Recent findings have highlighted important roles for gut microbiota in shaping lung inflammation. Here, we discuss interactions between the microbiota and immune system including T cells, protective effects of microbiota on lung infections, the role of diet in shaping the composition of gut microbiota and susceptibility to asthma, epidemiologic evidence implicating antibiotic use and microbiota in asthma and clinical trials investigating probiotics as potential treatments for atopy and asthma...
August 4, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28765980/the-aboveground-vegetation-type-and-underground-soil-property-mediate-the-divergence-of-soil-microbiomes-and-the-biological-interactions
#4
Shu-Hong Wu, Bing-Hong Huang, Chia-Lung Huang, Gang Li, Pei-Chun Liao
The composition of the soil microbiome is influenced by environmental (abiotic) variables and biological interactions (biotic factors). To determine whether the aboveground vegetation and soil physicochemical properties were the main determinant of beta-diversity and biological interaction of soil microbial community, we sampled soils from the temperate coniferous forest and grassland. Clustering of operational taxonomic units was conducted using 16S rRNA gene. We found that the microbial composition of the rhizospheres, in which root exudates influence the microbial environment, show lower alpha-diversity than that of nonroot soils...
August 1, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28758937/a-different-microbiome-gene-repertoire-in-the-airways-of-cystic-fibrosis-patients-with-severe-lung-disease
#5
Giovanni Bacci, Alessio Mengoni, Ersilia Fiscarelli, Nicola Segata, Giovanni Taccetti, Daniela Dolce, Patrizia Paganin, Patrizia Morelli, Vanessa Tuccio, Alessandra De Alessandri, Vincenzina Lucidi, Annamaria Bevivino
In recent years, next-generation sequencing (NGS) was employed to decipher the structure and composition of the microbiota of the airways in cystic fibrosis (CF) patients. However, little is still known about the overall gene functions harbored by the resident microbial populations and which specific genes are associated with various stages of CF lung disease. In the present study, we aimed to identify the microbial gene repertoire of CF microbiota in twelve patients with severe and normal/mild lung disease by performing sputum shotgun metagenome sequencing...
July 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28756121/distal-airway-microbiome-is-associated-with-immunoregulatory-myeloid-cell-responses-in-lung-transplant-recipients
#6
Nirmal S Sharma, Keith M Wille, S Athira, Degui Zhi, Kenneth P Hough, Enrique Diaz-Guzman, Kui Zhang, Ranjit Kumar, Sunad Rangarajan, Peter Eipers, Yong Wang, Ritesh K Srivastava, Jose Vicente Rodriguez Dager, Mohammad Athar, Casey Morrow, Charles W Hoopes, David D Chaplin, Victor J Thannickal, Jessy S Deshane
BACKGROUND: Long-term survival of lung transplant recipients (LTRs) is limited by the occurrence of bronchiolitis obliterans syndrome (BOS). Recent evidence suggests a role for microbiome alterations in the occurrence of BOS, although the precise mechanisms are unclear. In this study we evaluated the relationship between the airway microbiome and distinct subsets of immunoregulatory myeloid-derived suppressor cells (MDSCs) in LTRs. METHODS: Bronchoalveolar lavage (BAL) and simultaneous oral wash and nasal swab samples were collected from adult LTRs...
July 15, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28743263/exposure-to-ambient-particulate-matter-alters-the-microbial-composition-and-induces-immune-changes-in-rat-lung
#7
Naijian Li, Fang He, Baoling Liao, Yuming Zhou, Bing Li, Pixin Ran
BACKGROUND: Ambient particulate matter exposure has been shown to increase the risks of respiratory diseases. However, the role of the lung microbiome and the immune response to inhaled particulate matter are largely unexplored. We studied the influence of biomass fuel and motor vehicle exhaust particles on the lung microbiome and pulmonary immunologic homeostasis in rats. METHODS: Fifty-seven Sprague-Dawley rats were randomly divided into clean air (CON), biomass fuel (BMF), and motor vehicle exhaust (MVE) groups...
July 25, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28741603/role-of-the-lung-microbiome-in-the-pathogenesis-of-chronic-obstructive-pulmonary-disease
#8
REVIEW
Lei Wang, Ke Hao, Ting Yang, Chen Wang
OBJECTIVE: The development of culture-independent techniques for microbiological analysis shows that bronchial tree is not sterile in either healthy or chronic obstructive pulmonary disease (COPD) individuals. With the advance of sequencing technologies, lung microbiome has become a new frontier for pulmonary disease research, and such advance has led to better understanding of the lung microbiome in COPD. This review aimed to summarize the recent advances in lung microbiome, its relationships with COPD, and the possible mechanisms that microbiome contributed to COPD pathogenesis...
July 24, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28740374/characterization-of-throat-microbial-flora-in-smokers-with-or-without-copd
#9
Wenqi Diao, Ning Shen, Yipeng Du, Ke Qian, Bei He
The study aimed to determine the relationship between throat microbiome and COPD. Sixty-five Chinese males (n=20, smokers without COPD; n=45 smokers with COPD) were included. Nonmetric multidimensional scaling indicated differences of microbiome between COPD and controls, but no difference was observed between COPD patients with differing degrees of lung function or disease severity. Rarefaction analyses suggested that operational taxonomic units (OTUs, species-level) richness decreased in COPD. The dominant taxa between COPD and controls were similar, but the proportions of taxonomic distribution were different...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28728934/beyond-bmi-obesity-and-lung-disease
#10
REVIEW
Ubong Peters, Benjamin T Suratt, Jason H T Bates, Anne E Dixon
The worldwide prevalence of obesity has increased rapidly in the last 3 decades, and this increase has led to important changes in the pathogenesis and clinical presentation of many common diseases. This review article examines the relationship between obesity and lung disease, highlighting some of the major findings that have advanced our understanding of the mechanisms contributing to this relationship. Changes in pulmonary function related to fat mass are important, but obesity is much more than simply a state of mass loading, and BMI is only a very indirect measure of metabolic health...
July 17, 2017: Chest
https://www.readbyqxmd.com/read/28722755/the-potential-of-anti-infectives-and-immunomodulators-as-therapies-for-asthma-and-asthma-exacerbations
#11
Michael R Edwards, Ross P Walton, David J Jackson, Wojciech Feleszko, Chrysanthi Skevaki, Tuomas Jartti, Heidi Makrinoti, Alexandra Nikonova, Igor Shilovskiy, Jurgen Schwarze, Sebastian L Johnston, Musa Khaitov
Asthma is responsible for approximately 25,000 deaths annually in Europe despite available medicines that maintain asthma control and reduce asthma exacerbations. Better treatments are urgently needed for the control of chronic asthma and reduction of asthma exacerbations, the major cause of asthma mortality. Much research spanning >20 years shows a strong association between microorganisms including pathogens in asthma onset, severity and exacerbation, yet with the exception of antibiotics, few treatments are available that specifically target the offending pathogens...
July 19, 2017: Allergy
https://www.readbyqxmd.com/read/28721208/new-perspectives-on-the-regulation-of-type-ii-inflammation-in-asthma
#12
REVIEW
Mireya Becerra-Díaz, Marsha Wills-Karp, Nicola M Heller
Asthma is a chronic inflammatory disease of the lungs which has been thought to arise as a result of inappropriately directed T helper type-2 (Th2) immune responses of the lungs to otherwise innocuous inhaled antigens. Current asthma therapeutics are directed towards the amelioration of downstream consequences of type-2 immune responses (i.e. β-agonists) or broad-spectrum immunosuppression (i.e. corticosteroids). However, few approaches to date have been focused on the primary prevention of immune deviation...
2017: F1000Research
https://www.readbyqxmd.com/read/28719637/microbiome-overview-in-swine-lungs
#13
Franciele Maboni Siqueira, Esteban Pérez-Wohlfeil, Fabíola Marques Carvalho, Oswaldo Trelles, Irene Silveira Schrank, Ana Tereza Ribeiro Vasconcelos, Arnaldo Zaha
Mycoplasma hyopneumoniae is the etiologic agent of swine enzootic pneumonia. However other mycoplasma species and secondary bacteria are found as inhabitants of the swine respiratory tract, which can be also related to disease. In the present study we have performed a total DNA metagenomic analysis from the lungs of pigs kept in a field condition, with suggestive signals of enzootic pneumonia and without any infection signals to evaluate the bacteria variability of the lungs microbiota. Libraries from metagenomic DNA were prepared and sequenced using total DNA shotgun metagenomic pyrosequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28719264/the-human-microbiome-in-the-fight-against-tuberculosis
#14
Madeleine R Wood, Elaine A Yu, Saurabh Mehta
AbstractThe human microbiome is an intriguing potentially modifiable risk factor in our arsenal against Mycobacterium tuberculosis, the leading infectious disease killer globally. Previous studies have shown associations between the human microbiome and pulmonary disease states; however, etiological links between the microbiome and tuberculosis (TB) infection or disease remain unclear. Immunomodulatory roles of the microbiome may prove to be a critical asset in the host response against TB, including in preventing TB infection, reducing progression from latency, mitigating disease severity, and lowering the incidence of drug resistance and coinfections...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28717640/lung-microbiome-and-host-immune-tone-in-subjects-with-idiopathic-pulmonary-fibrosis-treated-with-inhaled-interferon-%C3%AE
#15
Jing Wang, Melissa Lesko, Michelle H Badri, Bianca C Kapoor, Benjamin G Wu, Yonghua Li, Gerald C Smaldone, Richard Bonneau, Zachary D Kurtz, Rany Condos, Leopoldo N Segal
Therapies targeting inflammation reveal inconsistent results in idiopathic pulmonary fibrosis (IPF). Aerosolised interferon (IFN)-γ has been proposed as a novel therapy. Changes in the host airway microbiome are associated with the inflammatory milieu and may be associated with disease progression. Here, we evaluate whether treatment with aerosolised IFN-γ in IPF impacts either the lower airway microbiome or the host immune phenotype. Patients with IPF who enrolled in an aerosolised IFN-γ trial underwent bronchoscopy at baseline and after 6 months...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28713344/outer-membrane-proteome-of-veillonella-parvula-a-diderm-firmicute-of-the-human-microbiome
#16
Daniel I Poppleton, Magalie Duchateau, Véronique Hourdel, Mariette Matondo, Jennifer Flechsler, Andreas Klingl, Christophe Beloin, Simonetta Gribaldo
Veillonella parvula is a biofilm-forming commensal found in the lungs, vagina, mouth, and gastro-intestinal tract of humans, yet it may develop into an opportunistic pathogen. Furthermore, the presence of Veillonella has been associated with the development of a healthy immune system in infants. Veillonella belongs to the Negativicutes, a diverse clade of bacteria that represent an evolutionary enigma: they phylogenetically belong to Gram-positive (monoderm) Firmicutes yet maintain an outer membrane (OM) with lipopolysaccharide similar to classic Gram-negative (diderm) bacteria...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28708417/association-of-antibiotics-airway-microbiome-and-inflammation-in-infants-with-cystic-fibrosis
#17
Jessica E Pittman, Kristine M Wylie, Kathryn Akers, Gregory A Storch, Joseph Hatch, Jane Quante, Katherine B Frayman, Nadeene Clarke, Miriam Davis, Stephen M Stick, Graham L Hall, Gregory Montgomery, Sarath Ranganathan, Stephanie D Davis, Thomas W Ferkol
RATIONALE: The underlying defect in the cystic fibrosis (CF) airway leads to defective mucociliary clearance and impaired bacterial killing, resulting in endobronchial infection and inflammation that contributes to progressive lung disease. Little is known about the respiratory microbiota in the early CF airway and its relationship to inflammation. OBJECTIVES: To examine the bacterial microbiota and inflammatory profiles in bronchoalveolar lavage fluid and oropharyngeal secretions in infants with CF...
July 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28705217/monitoring-clinical-and-microbiological-evolution-of-a-cystic-fibrosis-patient-over-26%C3%A2-years-experience-of-a-brazilian-cf-centre
#18
Cassiana da Costa Ferreira Leite, Tania Wrobel Folescu, Mônica de Cássia Firmida, Renata Wrobel Folescu Cohen, Robson Souza Leão, Flávia Alvim Dutra de Freitas, Rodolpho Mattos Albano, Claudia Henrique da Costa, Elizabeth Andrade Marques
BACKGROUND: Burkholderia cepacia complex is a group of opportunistic pathogens in cystic fibrosis (CF) patients believed to be associated with poor prognosis and patient-to-patient transmissibility. Little is known about clinical outcomes after B. vietnamiensis chronic colonization/infection. CASE PRESENTATION: A 33 yo male patient had diagnosis of CF by 7 yo, after recurrent pneumonia during infancy and lobectomy (left upper lobe) at 6 yo. Burkholderia cepacia complex (Bcc) was first isolated by 13 yo, and the patient fulfilled the criteria for chronic colonization by 15 yo...
July 14, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28704544/effect-of-acute-ozone-exposure-on-the-lung-metabolomes-of-obese-and-lean-mice
#19
Joel Andrew Mathews, David Itiro Kasahara, Youngji Cho, Lauren Nicole Bell, Philip Ross Gunst, Edward D Karoly, Stephanie Ann Shore
Pulmonary responses to the air pollutant, ozone, are increased in obesity. Both obesity and ozone cause changes in systemic metabolism. Consequently, we examined the impact of ozone on the lung metabolomes of obese and lean mice. Lean wildtype and obese db/db mice were exposed to acute ozone (2 ppm for 3 h) or air. 24 hours later, the lungs were excised, flushed with PBS to remove blood and analyzed via liquid-chromatography or gas-chromatography coupled to mass spectrometry for metabolites. Both obesity and ozone caused changes in the lung metabolome...
2017: PloS One
https://www.readbyqxmd.com/read/28704452/influence-of-lung-ct-changes-in-chronic-obstructive-pulmonary-disease-copd-on-the-human-lung-microbiome
#20
Marion Engel, David Endesfelder, Brigitte Schloter-Hai, Susanne Kublik, Michael S Granitsiotis, Piera Boschetto, Mariarita Stendardo, Imre Barta, Balazs Dome, Jean-François Deleuze, Anne Boland, Joachim Müller-Quernheim, Antje Prasse, Tobias Welte, Jens Hohlfeld, Deepak Subramanian, David Parr, Ivo Glynne Gut, Timm Greulich, Andreas Rembert Koczulla, Adam Nowinski, Dorota Gorecka, Dave Singh, Sumit Gupta, Christopher E Brightling, Harald Hoffmann, Marion Frankenberger, Thomas P Hofer, Dorothe Burggraf, Marion Heiss-Neumann, Loems Ziegler-Heitbrock, Michael Schloter, Wolfgang Zu Castell
BACKGROUND: Changes in microbial community composition in the lung of patients suffering from moderate to severe COPD have been well documented. However, knowledge about specific microbiome structures in the human lung associated with CT defined abnormalities is limited. METHODS: Bacterial community composition derived from brush samples from lungs of 16 patients suffering from different CT defined subtypes of COPD and 9 healthy subjects was analyzed using a cultivation independent barcoding approach applying 454-pyrosequencing of 16S rRNA gene fragment amplicons...
2017: PloS One
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