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https://www.readbyqxmd.com/read/29045511/mechanisms-regulating-t-cell-infiltration-and-activity-in-solid-tumors
#1
E Lanitis, D Dangaj, M Irving, G Coukos
T-lymphocytes play a critical role in cancer immunity as evidenced by their presence in resected tumor samples derived from long-surviving patients, and impressive clinical responses to various immunotherapies that reinvigorate them. Indeed, tumors can upregulate a wide array of defense mechanisms, both direct and indirect, to suppress the ability of Tcells to reach the tumor bed and mount curative responses upon infiltration. In addition, patient and tumor genetics, previous antigenic experience, and the microbiome, are all important factors in shaping the T-cell repertoire and sensitivity to immunotherapy...
September 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045252/altered-gut-microbiome-composition-in-hiv-infection-causes-effects-and-potential-intervention
#2
Alessandra Bandera, Ilaria De Benedetto, Giorgio Bozzi, Andrea Gori
PURPOSE OF REVIEW: Aim of this review is to summarize the alterations occurring in gut microbiome composition after HIV infection, and to underline how intestinal dysbiosis can affect immune homeostasis, immune recovery, and persisting immune activation under antiretroviral therapy (ART). Many interventions have been suggested, mostly with inconclusive results. RECENT FINDINGS: Recent evidence showed that gut microbiota from HIV-infected patients harbor reproducible differences compared to uninfected individuals...
October 17, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29042177/antibiotic-exposure-and-interpersonal-variance-mask-the-effect-of-ivacaftor-on-respiratory-microbiota-composition
#3
Anton Y Peleg, Jocelyn Choo, Katherine Langan, Deirdre Edgeworth, Dominic Keating, John Wilson, Geraint B Rogers, Tom Kotsimbos
BACKGROUND: G551D is a class III mutation of the cystic fibrosis transmembrane regulator (CFTR) that results in impaired chloride channel function in cystic fibrosis (CF). Ivacaftor, a CFTR-potentiating agent improves sweat chloride, weight, lung function, and pulmonary exacerbation rate in CF patients with G551D mutations, but its effect on the airway microbiome remains poorly characterised. METHODS: Twenty CF patients with at least one G551D mutation from a single centre were recruited to a 4month double-blind, placebo-controlled, crossover study of ivacaftor with 28days of active treatment...
October 14, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29040820/systematic-review-of-the-effect-of-enteral-feeding-on-gut-microbiota-in-preterm-infants
#4
Wanli Xu, Michelle Judge, Kendra Maas, Naveed Hussain, Jacqueline M McGrath, Wendy A Henderson, Xiaomei Cong
OBJECTIVE: To examine the effect of feeding type on microbial patterns among preterm infants and to identify feeding factors that promote the colonization of beneficial bacteria. DATA SOURCES: PubMed, Cochrane Database of Systematic Reviews, Scopus, and the Cummulative Index of Nursing and Allied Health Literature were thoroughly searched for articles published between January 2000 and January 2017, using the keywords gut microbiome, gut microbiota, enteral microbiome, enteral microbiota, premature infant, preterm infant, extremely low birth weight infant, ELBW infant, very low birth weight infant, feeding, breast milk, breastfeeding, formula, prebiotic, probiotic, and long chain polyunsaturated fatty acid...
October 14, 2017: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/29038112/interplay-between-microbes-and-the-circadian-clock
#5
Paola Tognini, Mari Murakami, Paolo Sassone-Corsi
Circadian rhythms influence virtually all life forms on our planet, a notion that opens the question on how the circadian cycles of individual organisms may interplay with each other. In mammals, a potentially dangerous environmental stress is represented by encounters with infectious agents. Microbial attack is a major risk for organismal homeostasis and therefore needs to be efficiently counteracted by mechanisms implemented by the host immune system. Accumulating evidence shows that the immune system may anticipate an emerging pathogenic exposure through an enhanced inflammatory state...
October 16, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/29038009/advances-in-mechanisms-of-allergic-disease-in-2016
#6
Marc E Rothenberg, Hirohisa Saito, R Stokes Peebles
This review highlights advances in mechanisms of allergic disease, particularly type 2 innate lymphoid cells; TH2 lymphocytes; eicosanoid regulation of inflammation; extracellular vesicles in allergic responses; IL-33; microbiome properties, especially as they relate to mucosal barrier function; and a series of findings concerning the allergic inflammatory cells eosinophils, basophils, and mast cells. During the last year, mechanistic advances occurred in understanding type 2 innate lymphoid cells, particularly related to their response to ozone, involvement with experimental food allergy responses, and regulation by IL-33...
October 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29035948/hiv-and-aging-role-of-the-microbiome
#7
Seema N Desai, Alan L Landay
PURPOSE OF REVIEW: The purpose of this article is to review age-associated alterations in microbiota composition, diversity and functional features in context of immune senescence, chronic inflammation and comorbidities associated with HIV infection. The overall goal is to assess whether modulating the microbiome will likely improve resilience of the immune system and augment return to health. RECENT FINDINGS: Alteration in the gut microbiota composition diversity and function occur in HIV and aging...
October 14, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29035947/cross-reactivity-of-hiv-vaccine-responses-and-the-microbiome
#8
Wilton B Williams, Qifeng Han, Barton F Haynes
PURPOSE OF REVIEW: A successful HIV-type 1 (HIV-1) vaccine will require immunogens that induce protective immune responses. However, recent studies suggest that the response to HIV-1 and perhaps other viruses may be altered by immune system exposure to intestinal microbiota-antigens. This review will discuss select aspects of these studies. RECENT FINDINGS: Naïve CD4 T and B cell repertoires can be imprinted by intestinal microbiota-antigens to respond to virus epitopes prior to virus infection...
October 14, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29035946/role-of-the-lung-microbiome-in-hiv-pathogenesis
#9
Meera K Shenoy, Susan V Lynch
PURPOSE OF REVIEW: The purpose of this review is to summarize recent findings on the lung microbiome in HIV-infected patients and associated pulmonary diseases, and the relationship of airway microbial communities to metabolic and immune signatures within this patient population. RECENT FINDINGS: The lung microbiome in HIV infection is a relatively new and rapidly developing field; early studies in the field produced inconclusive evidence as to whether HIV-infection changes the lower airway microbiome...
October 14, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29035945/the-functional-consequences-of-the-microbiome-in-hiv-insights-from-metabolomic-studies
#10
Sergio Serrano-Villar, Santiago Moreno, Manuel Ferrer
PURPOSE OF REVIEW: It is critical to gain insight into the metabolic pathways by which the microbiota might influence HIV immunopathogenesis to exploit host-microbiota interactions. The aim of this review is to sketch a very broad picture of recent advances in our knowledge of how HIV might affect the microbiota, with a focus on specific gene products, particularly, metabolites produced by the microbiota that may affect HIV immunopathogenesis. RECENT FINDINGS: First, we describe the different approaches used to explore imbalances in effector microbial products during HIV infection...
October 14, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29034981/review-article-the-gut-microbiome-in-inflammatory-bowel-disease-avenues-for-microbial-management
#11
REVIEW
J McIlroy, G Ianiro, I Mukhopadhya, R Hansen, G L Hold
BACKGROUND: The concept of an altered collective gut microbiota rather than identification of a single culprit is possibly the most significant development in inflammatory bowel disease research. We have entered the "omics" era, which now allows us to undertake large-scale/high-throughput microbiota analysis which may well define how we approach diagnosis and treatment of inflammatory bowel disease (IBD) in the future, with a strong steer towards personalised therapeutics. AIM: To assess current epidemiological, experimental and clinical evidence of the current status of knowledge relating to the gut microbiome, and its role in IBD, with emphasis on reviewing the evidence relating to microbial therapeutics and future microbiome modulating therapeutics...
October 16, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29034105/changes-of-the-intestinal-microbiome-host-homeostasis-in-hiv-infected-individuals-a-focus-on-the-bacterial-gut-microbiome
#12
REVIEW
Ana Beatriz Dein Terra Mota Ribeiro, Markus M Heimesaat, Stefan Bereswill
Human immunodeficiency virus (HIV) infections cause severe CD4+ T cell depletion leading to chronic inflammation and immune activation, impaired barrier function, and microbial translocation. Even under effective antiretroviral therapy, these processes persist, leading to gut microbiome dysbiosis and disturbance of microbiome-host homeostasis. This systematic review aims at analyzing how gut microbiome and host immune system influence each other during HIV pathogenesis. An online search applying the PubMed database was conducted...
September 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29033938/early-life-nutritional-factors-and-mucosal-immunity-in-the-development-of-autoimmune-diabetes
#13
REVIEW
Ling Xiao, Belinda Van't Land, Wouter R P H van de Worp, Bernd Stahl, Gert Folkerts, Johan Garssen
Type 1 diabetes (T1D) is an immune-mediated disease with a strong genetic basis but might be influenced by non-genetic factors such as microbiome development that "programs" the immune system during early life as well. Factors influencing pathogenesis, including a leaky intestinal mucosal barrier, an aberrant gut microbiota composition, and altered immune responsiveness, offer potential targets for prevention and/or treatment of T1D through nutritional or pharmacologic means. In this review, nutritional approaches during early life in order to protect against T1D development have been discussed...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29033905/a-review-on-the-applications-of-next-generation-sequencing-technologies-as-applied-to-food-related-microbiome-studies
#14
REVIEW
Yu Cao, Séamus Fanning, Sinéad Proos, Kieran Jordan, Shabarinath Srikumar
The development of next generation sequencing (NGS) techniques has enabled researchers to study and understand the world of microorganisms from broader and deeper perspectives. The contemporary advances in DNA sequencing technologies have not only enabled finer characterization of bacterial genomes but also provided deeper taxonomic identification of complex microbiomes which in its genomic essence is the combined genetic material of the microorganisms inhabiting an environment, whether the environment be a particular body econiche (e...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29032709/putative-predictors-of-efficacy-for-immune-checkpoint-inhibitors-in-non-small-cell-lung-cancer-facing-the-complexity-of-the-immune-system
#15
Giulia Grizzi, Mario Caccese, Anastasios Gkountakos, Luisa Carbognin, Giampaolo Tortora, Emilio Bria, Sara Pilotto
In non-small-cell lung cancer (NSCLC) the recent introduction of immunotherapy in daily clinical practice produced a wave of enthusiasm, however, this was rapidly moderated by the evidence that only some patients could experience a relevant clinical benefit. Therefore, a great effort from the scientific community has been dedicated to the identification and validation of reliable biomarkers able to drive the activity of immunotherapeutic agents. Areas covered. This analysis aims to review the main findings about predictive biomarkers for immunotherapy in lung cancer, retracing the history of PD-L1 and focusing on a series of innovative candidates, such as mutational load, immune cells populations and microbiome...
October 14, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29031890/changing-perspectives-in-atopic-dermatitis
#16
REVIEW
E Serra-Baldrich, J O de Frutos, I Jáuregui, J C Armario-Hita, J F Silvestre, L Herraez, A Martín-Santiago, A Valero, J Sastre
Atopic dermatitis (AD) is a multifaceted disease that involves a complex interplay between the skin and the immune system. The course of the disease depends strongly on the genetic background of the patient and on yet poorly-defined environmental factors. Changes in lifestyle could be behind the dramatic rise in the prevalence of AD across continents; including hygienic conditions, food, social habits, skin microbiome or exposure to a number of allergens. Although AD typically develops in childhood and disappears after a few years, in a relatively large number of patients it continues into adulthood...
October 11, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29031410/harnessing-gut-microbes-for-mental-health-getting-from-here-to-there
#17
REVIEW
Annadora J Bruce-Keller, J Michael Salbaum, Hans-Rudolf Berthoud
There has been an explosion of interest in the study of microorganisms inhabiting the gastrointestinal tract (gut microbiota) and their impact on host health and physiology. Accumulating data suggest that altered communication between gut microbiota and host systems could participate in disorders such as obesity, diabetes mellitus, and autoimmune disorders as well as neuropsychiatric disorders, including autism, anxiety, and major depressive disorders. The conceptual development of the microbiome-gut-brain axis has facilitated understanding of the complex and bidirectional networks between gastrointestinal microbiota and their host, highlighting potential mechanisms through which this environment influences central nervous system physiology...
August 30, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29028872/a-review-of-methods-and-databases-for-metagenomic-classification-and-assembly
#18
Florian P Breitwieser, Jennifer Lu, Steven L Salzberg
Microbiome research has grown rapidly over the past decade, with a proliferation of new methods that seek to make sense of large, complex data sets. Here, we survey two of the primary types of methods for analyzing microbiome data: read classification and metagenomic assembly, and we review some of the challenges facing these methods. All of the methods rely on public genome databases, and we also discuss the content of these databases and how their quality has a direct impact on our ability to interpret a microbiome sample...
September 23, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/29028668/the-mycobiome-in-hiv
#19
Christopher L Hager, Mahmoud A Ghannoum
PURPOSE OF REVIEW: There are a limited number of studies investigating the association between the microbiome and HIV. Although the majority of these published investigations have focused on the role of the bacterial community (bacteriome) in this setting, a handful of studies have also characterized the role of the mycobiome in HIV-infected individuals. This review will summarize the most recent reports pertaining to the role of the fungal community in HIV. RECENT FINDINGS: Differences in the composition of the oral and respiratory mycobiome in HIV-infected individuals compared with uninfected individuals have been reported...
October 11, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29026924/gene-regulation-two-component-regulatory-systems-and-adaptive-responses-in-treponema-denticola
#20
Richard T Marconi
The oral microbiome consists of a remarkably diverse group of 500-700 bacterial species. The microbial etiology of periodontal disease is similarly complex. Of the ~400 bacterial species identified in subgingival plaque, at least 50 belong to the genus Treponema. As periodontal disease develops and progresses, T. denticola transitions from a low to high abundance species in the subgingival crevice. Changes in the overall composition of the bacterial population trigger significant changes in the local physical, immunological and physiochemical conditions...
October 13, 2017: Current Topics in Microbiology and Immunology
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