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https://www.readbyqxmd.com/read/29746379/factors-influencing-the-intestinal-microbiome-during-the-first-year-of-life
#1
Petra Zimmermann, Nigel Curtis
The intestinal microbiome plays a crucial role in the development of the immune system and regulation of immune responses. Many factors influence the composition of the infant intestinal microbiome and therefore the development and function of the immune system. This in turn may alter the risk of subsequent allergies, autoimmune diseases and other adverse health outcomes. Here, we review factors that influence the composition of the intestinal microbiome during the first year of life, including birth location, gestational age, delivery mode, feeding method, hospitalization, antibiotic and probiotic intake, and living conditions...
May 9, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29742478/autoimmune-phenotypes-in-schizophrenia-reveal-novel-treatment-targets
#2
REVIEW
Emily G Severance, Faith B Dickerson, Robert H Yolken
Typical and atypical antipsychotics are the first-line treatments for schizophrenia, but these classes of drugs are not universally effective, and they can have serious side effects that impact compliance. Antipsychotic drugs generally target the dopamine pathways with some variation. As research of schizophrenia pathophysiology has shifted away from a strictly dopamine-centric focus, the development of new pharmacotherapies has waned. A field of inquiry with centuries-old roots is gaining traction in psychiatric research circles and may represent a new frontier for drug discovery in schizophrenia...
May 6, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29706647/the-microbiome-and-autoimmunity-a-paradigm-from-the-gut-liver-axis
#3
REVIEW
Bo Li, Carlo Selmi, Ruqi Tang, M E Gershwin, Xiong Ma
Microbial cells significantly outnumber human cells in the body, and the microbial flora at mucosal sites are shaped by environmental factors and, less intuitively, act on host immune responses, as demonstrated by experimental data in germ-free and gnotobiotic studies. Our understanding of this link stems from the established connection between infectious bacteria and immune tolerance breakdown, as observed in rheumatic fever triggered by Streptococci via molecular mimicry, epitope spread and bystander effects...
April 30, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29670252/urbanization-and-the-gut-microbiota-in-health-and-inflammatory-bowel-disease
#4
REVIEW
Tao Zuo, Michael A Kamm, Jean-Frédéric Colombel, Siew C Ng
In the 21st century, urbanization represents a major demographic shift in developed and developing countries. Rapid urbanization in the developing world has been associated with an increasing incidence of several autoimmune diseases, including IBD. Patients with IBD exhibit a decrease in the diversity and richness of the gut microbiota, while urbanization attenuates the gut microbial diversity and might have a role in the pathogenesis of IBD. Environmental exposures during urbanization, including Westernization of diet, increased antibiotic use, pollution, improved hygiene status and early-life microbial exposure, have been shown to affect the gut microbiota...
April 18, 2018: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29665882/effects-of-antibiotic-resistance-ar-and-microbiota-shifts-on-campylobacter-jejuni-mediated-diseases
#5
Phillip T Brooks, Linda S Mansfield
Campylobacter jejuni is an important zoonotic pathogen recently designated a serious antimicrobial resistant (AR) threat. While most patients with C. jejuni experience hemorrhagic colitis, serious autoimmune conditions can follow including inflammatory bowel disease (IBD) and the acute neuropathy Guillain Barré Syndrome (GBS). This review examines inter-relationships among factors mediating C. jejuni diarrheal versus autoimmune disease especially AR C. jejuni and microbiome shifts. Because both susceptible and AR C...
December 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29662485/our-environment-shapes-us-the-importance-of-environment-and-sex-differences-in-regulation-of-autoantibody-production
#6
REVIEW
Michael Edwards, Rujuan Dai, S Ansar Ahmed
Consequential differences exist between the male and female immune systems' ability to respond to pathogens, environmental insults or self-antigens, and subsequent effects on immunoregulation. In general, females when compared with their male counterparts, respond to pathogenic stimuli and vaccines more robustly, with heightened production of antibodies, pro-inflammatory cytokines, and chemokines. While the precise reasons for sex differences in immune response to different stimuli are not yet well understood, females are more resistant to infectious diseases and much more likely to develop autoimmune diseases...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29623708/-gut-microbiota-its-development-and-relation-to-certain-diseases
#7
Hana Kiňová Sepová, Boris Dudík, Andrea Bilková
Coexistence of humans with microorganisms is well known for a long time. Besides the association with infectious diseases, personal microbiota is important for human health, possibly for some non-infectious diseases. Colonization of the human body with appropriate microorganisms after delivery is essential for physiological immune system maturation and also has an influence on central nervous system development. The composition of the gut microbiota is affected by the mode of delivery, early life nutrition and last but not least by lifestyle and drug, especially antibiotics intake...
2018: Ceská a Slovenská Farmacie
https://www.readbyqxmd.com/read/29610731/microscopic-colitis-microbiome-barrier-function-and-associated-diseases
#8
REVIEW
Saskia van Hemert, Karolina Skonieczna-Żydecka, Igor Loniewski, Piotr Szredzki, Wojciech Marlicz
Microscopic colitis (MC) is a chronic inflammatory bowel disease (IBD) with little in terms of endoscopic abnormalities and is frequently associated with other autoimmune diseases. The peak incidence of the disease is in middle aged or older populations, mostly females. The pathogenesis of MC is complex, multifactorial and poorly understood. Current concepts revolve around innate immunity or microbiome alterations as well as gut barrier dysfunction, all of which lead to the development of subtle inflammatory lesions in gut mucosa...
February 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29572583/insights-into-the-human-oral-microbiome
#9
REVIEW
Digvijay Verma, Pankaj Kumar Garg, Ashok Kumar Dubey
Human oral cavity harbors the second most abundant microbiota after the gastrointestinal tract. The expanded Human Oral Microbiome Database (eHOMD) that was last updated on November 22, 2017, contains the information of approximately 772 prokaryotic species, where 70% is cultivable, and 30% belong to the uncultivable class of microorganisms along with whole genome sequences of 482 taxa. Out of 70% culturable species, 57% have already been assigned to their names. The 16S rDNA profiling of the healthy oral cavity categorized the inhabitant bacteria into six broad phyla, viz...
March 23, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29566910/intestinal-microbiome-and-permeability-in-patients-with-autoimmune-hepatitis
#10
REVIEW
Wangfeng Cai, Ying Ran, Yanni Li, Bangmao Wang, Lu Zhou
Autoimmune hepatitis (AIH) is a severe inflammatory liver disease. The underlying mechanisms remain unclear, but recent studies provided new perspectives on altered intestinal microbiome and permeability in AIH animal models and patients, highlighting gut-liver crosstalk in the pathogenesis of AIH. Transgenic AIH mice carrying HLA-DR3 showed reduced diversity and total load of gut microbiota. Germ-free mice are resistant to concanavalin A-induced liver injury, whereas enterogenouss antigens induce the activation of natural killer T cells participating in concanavalin A-induced liver injury, supporting the close relationship between microbiota and AIH...
December 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/29559977/interrelation-of-diet-gut-microbiome-and-autoantibody-production
#11
REVIEW
Ioanna Petta, Judith Fraussen, Veerle Somers, Markus Kleinewietfeld
B cells possess a predominant role in adaptive immune responses via antibody-dependent and -independent functions. The microbiome of the gastrointestinal tract is currently being intensively investigated due to its profound impact on various immune responses, including B cell maturation, activation, and IgA antibody responses. Recent findings have demonstrated the interplay between dietary components, gut microbiome, and autoantibody production. "Western" dietary patterns, such as high fat and high salt diets, can induce alterations in the gut microbiome that in turn affects IgA responses and the production of autoantibodies...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29538183/the-role-of-the-intestinal-microbiome-in-ocular-inflammatory-disease
#12
Phoebe Lin
PURPOSE OF REVIEW: The intestinal commensal microbiota are important in shaping immune cell repertoire and are influenced by host genetics. Because of this intricate interaction, an intestinal dysbiosis has been associated with multiple immune-mediated polygenic diseases. This review summarizes the literature on how alterations in the intestinal microbiota contribute to immune-mediated ocular disease, and how to potentially target the gut microbiome for therapeutic benefit. RECENT FINDINGS: Several groups have demonstrated the importance of the intestinal microbiome in uveitis pathogenesis...
May 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29538012/multiple-hit-infection-and-autoimmunity-the-dysbiotic-microbiota-acpa-connection-in-rheumatoid-arthritis
#13
Lazaros I Sakkas, Dimitrios P Bogdanos
PURPOSE OF REVIEW: This review highlights the most recent data obtained in this field and provides clues toward the better understanding of the close interplay between microbiota and host, leading to autoimmune diseases. RECENT FINDINGS: A well-described model of microbiota/host interaction of relevance to autoimmunity is that linking anti-citrullinated peptide antibody positive rheumatoid arthritis and alterations of microbiota largely concentrating on Porphyromonas gingivalis and more recently of Aggregatibacter actinomycetemcomitans and Prevotella copri...
March 13, 2018: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/29528123/finding-a-needle-in-a-haystack-bacteroides-fragilis-polysaccharide-a-as-the-archetypical-symbiosis-factor
#14
REVIEW
Deniz Erturk-Hasdemir, Dennis L Kasper
Starting from birth, all animals develop a symbiotic relationship with their resident microorganisms that benefits both the microbe and the host. Recent advances in technology have substantially improved our ability to direct research toward the identification of important microbial species that affect host physiology. The identification of specific commensal molecules from these microbes and their mechanisms of action is still in its early stages. Polysaccharide A (PSA) of Bacteroides fragilis is the archetypical example of a commensal molecule that can modulate the host immune system in health and disease...
March 12, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29524863/the-gut-microbiome-and-elevated-cardiovascular-risk-in-obesity-and-autoimmunity
#15
REVIEW
Lora J Kasselman, Nicholas A Vernice, Joshua DeLeon, Allison B Reiss
Cardiovascular disease associated with obesity and autoimmunity is the leading cause of death in these populations and significant residual risk remains despite current treatment approaches. Obesity, type 1 diabetes mellitus (T1DM), rheumatoid arthritis (RA), and systemic lupus erythematosus (SLE) are linked to chronic inflammation, and subjects with these disorders have characteristic shifts in their gut microbiome composition. Recent data suggest that alterations in gut microbial and metabolic composition may be responsible, in part, for induction of chronic inflammation, thus promoting cardiovascular disease...
April 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29515679/role-of-diet-in-influencing-rheumatoid-arthritis-disease-activity
#16
REVIEW
Humeira Badsha
Background: Patients with Rheumatoid Arthritis (RA) frequently ask their doctors about which diets to follow, and even in the absence of advice from their physicians, many patients are undertaking various dietary interventions. Discussion: However, the role of dietary modifications in RA is not well understood. Several studies have tried to address these gaps in our understanding. Intestinal microbial modifications are being studied for the prevention and management of RA...
2018: Open Rheumatology Journal
https://www.readbyqxmd.com/read/29507896/market-integration-predicts-human-gut-microbiome-attributes-across-a-gradient-of-economic-development
#17
Keaton Stagaman, Tara J Cepon-Robins, Melissa A Liebert, Theresa E Gildner, Samuel S Urlacher, Felicia C Madimenos, Karen Guillemin, J Josh Snodgrass, Lawrence S Sugiyama, Brendan J M Bohannan
Economic development is marked by dramatic increases in the incidence of microbiome-associated diseases, such as autoimmune diseases and metabolic syndromes, but the lifestyle changes that drive alterations in the human microbiome are not known. We measured market integration as a proxy for economically related lifestyle attributes, such as ownership of specific market goods that index degree of market integration and components of traditional and nontraditional (more modern) house structure and infrastructure, and profiled the fecal microbiomes of 213 participants from a contiguous, indigenous Ecuadorian population...
January 2018: MSystems
https://www.readbyqxmd.com/read/29505775/autoimmunity-autoinflammation-and-infection-in-uveitis
#18
John V Forrester, Lucia Kuffova, Andrew D Dick
PURPOSE: To review the pathogenesis of uveitis in light of recent advances in our understanding of innate and adaptive immune responses and their regulation. DESIGN: Perspective. METHODS: Methods included a review of prevailing views on the pathogenesis of uveitis and an analysis of developments in immunology that impact on its conceptual basis, particularly the concept of immunologic tolerance and its loss in autoimmunity. Importantly, the role of infection in the pathogenesis of uveitis is evaluated...
May 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29497108/human-milk-oligosaccharides-protect-against-the-development-of-autoimmune-diabetes-in-nod-mice
#19
Ling Xiao, Belinda Van't Land, Phillip A Engen, Ankur Naqib, Stefan J Green, Angie Nato, Thea Leusink-Muis, Johan Garssen, Ali Keshavarzian, Bernd Stahl, Gert Folkerts
Development of Type 1 diabetes (T1D) is influenced by non-genetic factors, such as optimal microbiome development during early life that "programs" the immune system. Exclusive and prolonged breastfeeding is an independent protective factor against the development of T1D, likely via bioactive components. Human Milk Oligosaccharides (HMOS) are microbiota modulators, known to regulate immune responses directly. Here we show that early life provision (only for a period of six weeks) of 1% authentic HMOS (consisting of both long-chain, as well as short-chain structures), delayed and suppressed T1D development in non-obese diabetic mice and reduced development of severe pancreatic insulitis in later life...
March 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29494275/the-gut-microbiota-and-immune-checkpoint-inhibitors
#20
Audrey Humphries, Adil Daud
Although immunotherapy has been remarkably effective across multiple cancer types, there continues to be a significant number of non-responding patients. A possible factor proposed to influence the efficacy of immunotherapies is the gut microbiome. We discuss the results and implications of recent research on the relationship between the gut microbiome, our immune systems, and immune checkpoint inhibitor therapies including anti-CTLA-4 Ab and anti-PD-1 Ab. While the investigations all exhibit interesting results and conclusions, we find little congruence in the specific bacteria that were found favorable for antitumor responses...
March 1, 2018: Human Vaccines & Immunotherapeutics
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