scholarly journals Soil causes gut microbiota to flourish and total serum IgE levels to decrease in mice

2021 ◽  
Author(s):  
Dongrui Zhou ◽  
Na Li ◽  
Fan Yang ◽  
Honglin Zhang ◽  
Zhimao Bai ◽  
...  
Keyword(s):  
Immune Function ◽  
Soil Microbes ◽  
Allergic Diseases ◽  
Short Chain Fatty Acids ◽  
Secretion System ◽  
Total Serum ◽  
Serum Ige ◽  
Bacterial Secretion ◽  
Bacterial Secretion System ◽  
Environmental Microbes

AbstractBackgroundTraditional farm environments provide protection from allergic diseases. In this study, farm environmental factors were classified into three categories: environmental microbes, soil, and organic matter. To explore the impact of soil and environmental microorganisms on gut microbiota and immune function, mice were fed sterilized soil, soil microbes (in lieu of environmental microbes), or non-sterilized soil.ResultsMetagenomic sequencing results showed that the intake of sterile soil while inhaling a small amount of soil microbes in the air, increased gut microbial diversity and the abundance of type III secretion system (T3SS) genes and decreased total serum IgE levels induced by 2-4-dinitrofluorobenzene. The intake of soil microbes increased the abundance of genes involved in the metabolism of short-chain fatty acids and amino acid biosynthesis. By contrast, the intake of soil increased gut microbial diversity, the abundance of T3SS genes and related infectious elements, and genes associated with the metabolism of short-chain fatty acids and amino acid biosynthesis and decreased serum IgE levels. The immune function was positively and significantly correlated with the bacterial secretion system genes, especially with that of T3SS.ConclusionsAn important mechanism through which farm environments exert a protective effect against allergic diseases could be by serving as a “prebiotic” promoting the reproduction and growth of some intestinal microorganisms that harbor bacterial secretion system genes, especially those of T3SS, whose abundance was positively and significantly correlated with innate immune function of mice.

scholarly journals Soil causes gut microbiota to flourish and total serum IgE levels to decrease in mice

2021 ◽  
Author(s):  
Dongrui Zhou ◽  
Na Li ◽  
Fan Yang ◽  
Honglin Zhang ◽  
Zhimao Bai ◽  
...  
Keyword(s):  
Immune Function ◽  
Soil Microbes ◽  
Allergic Diseases ◽  
Short Chain Fatty Acids ◽  
Secretion System ◽  
Total Serum ◽  
Serum Ige ◽  
Bacterial Secretion ◽  
Bacterial Secretion System ◽  
Environmental Microbes

Abstract Background Traditional farm environments provide protection from allergic diseases. In this study, farm environmental factors were classified into three categories: environmental microbes, soil, and organic matter. To explore the impact of soil and environmental microorganisms on gut microbiota and immune function, mice were fed sterilized soil, soil microbes (in lieu of environmental microbes), or non-sterilized soil. Results Metagenomic sequencing results showed that the intake of sterile soil while inhaling a small amount of soil microbes in the air, increased gut microbial diversity and the abundance of type III secretion system (T3SS) genes and decreased total serum IgE levels induced by 2-4-dinitrofluorobenzene. The intake of soil microbes increased the abundance of genes involved in the metabolism of short-chain fatty acids and amino acid biosynthesis. By contrast, the intake of soil increased gut microbial diversity, the abundance of T3SS genes and related infectious elements, and genes associated with the metabolism of short-chain fatty acids and amino acid biosynthesis and decreased serum IgE levels. The immune function was positively and significantly correlated with the bacterial secretion system genes, especially with that of T3SS. Conclusions An important mechanism through which farm environments exert a protective effect against allergic diseases could be by serving as a “prebiotic” promoting the reproduction and growth of some intestinal microorganisms that harbor bacterial secretion system genes, especially those of T3SS, whose abundance was positively and significantly correlated with innate immune function of mice.

scholarly journals The Study of a Possible Correlation between Serum Levels of Interleukin 17 and Clinical Severity in Patients with Allergic Rhinitis

2017 ◽  
Vol 8 (3) ◽  
pp. ar.2017.8.0207
Author(s):  
Mai Aly Gharib Aly ◽  
Mohamed Tawfik El Tabbakh ◽  
Waheed Fawzy Heissam ◽  
Said Hamed Abbadi
Keyword(s):  
Allergic Rhinitis ◽  
Immunoglobulin E ◽  
Skin Testing ◽  
Allergic Diseases ◽  
Serum Levels ◽  
Clinical Severity ◽  
Total Serum ◽  
Interleukin 17 ◽  
Serum Ige ◽  
Cluster Immunotherapy

Introduction Allergic rhinitis (AR) is one of the most common allergic diseases, which affects ~20% of the world's population. T-helper (Th) type 2 cells produce interleukin (IL) 4 and IL-13, and mediate allergic responses, and these cytokines have been extensively studied as key players in the atopic airway diseases. However, the involvement of Th17 cells and IL-17 in AR has not been clearly examined. Aim To reevaluate AR clinical severity with serum IL-17, whether IL-17 affects the disease alone or in contribution with the atopic predisposition. Patients and Methods During an 18-month period, 39 individuals were divided into three groups: A, (13 control), B (13 with mild-to-moderate AR), and C (13 with severe AR). Both group B and group C patients (26) were subjected to clinical examination and allergy skin testing, and to measurement of both total serum immunoglobulin E (IgE) and IL-17 levels. Eleven patients with AR then were exposed to 6 months of cluster immunotherapy, whereas the rest of the patients were not exposed. Results Revealed a significant elevation of serum IL-17 levels with an associated increase in serum IgE in the patients with AR compared with controls and revealed that the serum levels of both total serum IgE and IL-17 decreased significantly after cluster immunotherapy. Conclusion These preliminary results added new data about the use of injective immunotherapy as well as reported on the use of sublingual immunotherapy.

scholarly journals Functional Production of a Soluble and Secreted Single-Chain Antibody by a Bacterial Secretion System

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e97367 ◽  
Author(s):  
Chiu-Min Cheng ◽  
Shey-Cherng Tzou ◽  
Ya-Han Zhuang ◽  
Chien-Chiao Huang ◽  
Chien-Han Kao ◽  
...  
Keyword(s):  
Secretion System ◽  
Single Chain ◽  
Single Chain Antibody ◽  
Bacterial Secretion ◽  
Bacterial Secretion System

Dose-Dependent Effect of Cotinine-Verified Tobacco Smoking on Serum Immunoglobulin E Levels in Korean Adult Males

2017 ◽  
Vol 21 (6) ◽  
pp. 813-817 ◽  
Author(s):  
Jae-June Dong ◽  
Jay J Shen ◽  
Yong-Jae Lee
Keyword(s):  
Tobacco Smoking ◽  
Immunoglobulin E ◽  
Allergic Diseases ◽  
Serum Immunoglobulin ◽  
Total Serum ◽  
Adult Males ◽  
Serum Ige ◽  
Korean Adult ◽  
Dose Dependent ◽  
Dose Dependent Effect

Abstract Background Smoking is one of the risk factors to exacerbate allergic diseases, and it may affect serum immunoglobulin E (IgE) levels. However, few studies have relied on an objective biomarker to examine the effect of tobacco smoking on serum IgE levels. Method A nationwide cross-sectional study was conducted to examine the relationship between urinary cotinine (Ucot) concentrations and IgE levels in 973 males using data from the 2010 Korean National Health and Nutrition Examination Survey (KNHANES). Ucot was classified into four groups based on concentration (ng/mL) as follows: nonsmoker group (Ucot <50 ng/mL) and three tertile groups in smokers (T1 [Ucot: 50.00–921.28 ng/mL]; T2 [Ucot: 921.29–1869.36 ng/mL]; and T3 [Ucot ≥1869.37 ng/mL]). The dose-response relationships between Ucot concentrations and total serum IgE level were estimated using analysis of covariance (ANCOVA) and multiple linear regression analysis after adjusting for confounding variables. Results We found a significant and positive dose-related effect of cigarette smoking as measured by Ucot concentrations on the total serum IgE level. The multivariate adjusted means of total serum IgE levels (SE) were 321.0 (36.3), 404.4 (102.7), 499.2 (79.2), and 534.7 (82.7) IU/mL, after adjusting for age, body mass index, alcohol ingestion, physical exercise, job, and household income. The regression coefficient β for total serum IgE was β = 68.6 with increasing level of Ucot group after adjusting for the same covariables (p = .009). Conclusion These findings suggest that the amount of smoking may have a dose-dependent effect on total serum IgE levels. Implication Smoking is one of the risk factors to exacerbate allergic diseases, and it may affect serum immunoglobulin E (IgE) levels, which is closely related to type 1 mediated allergic diseases. However, few studies have relied on an objective biomarker to examine the effect of tobacco smoking on serum IgE levels. We found that tobacco exposure, as measured by Ucot concentrations, increased the serum IgE levels in a dose-response manner in a representative sample of Korean adult males.

scholarly journals SecA—a New Twist in the Tale

2016 ◽  
Vol 199 (2) ◽  
Author(s):  
Ian Collinson
Keyword(s):  
Secretion System ◽  
Protein Export ◽  
Inner Membrane ◽  
Link Type ◽  
Sec System ◽  
Bacterial Secretion ◽  
Bacterial Secretion System ◽  
Timely Reminder

ABSTRACT A paper published in this issue of the Journal of Bacteriology (D. Huber, M. Jamshad, R. Hanmer, D. Schibich, K. Döring, I. Marcomini, G. Kramer, and B. Bukau, J Bacteriol 199:e0622-16, 2017, https://doi.org/10.1128/JB.00622-16 ) provides us with a timely reminder that all is not as clear as we had previously thought in the general bacterial secretion system. The paper describes a new mode of secretion through the Sec system—“uncoupled cotranslocation”—for the passage of proteins across the bacterial inner membrane and suggests that we might rethink the nature and mechanism of the targeting and transport steps toward protein export.

scholarly journals Bacterial secretion system skews the fate of Legionella-containing vacuoles towards LC3-associated phagocytosis

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Andree Hubber ◽  
Tomoko Kubori ◽  
Cevayir Coban ◽  
Takeshi Matsuzawa ◽  
Michinaga Ogawa ◽  
...  
Keyword(s):  
Secretion System ◽  
Bacterial Secretion ◽  
Bacterial Secretion System

scholarly journals A Widespread Bacterial Secretion System with Diverse Substrates

mBio ◽  
2021 ◽  
Author(s):  
Alex S. Grossman ◽  
Terra J. Mauer ◽  
Katrina T. Forest ◽  
Heidi Goodrich-Blair
Keyword(s):  
Secretion System ◽  
Microbial Colonization ◽  
Secreted Proteins ◽  
Surface Conditions ◽  
Immunological Responses ◽  
Colonization Factors ◽  
Physical And Chemical ◽  
Bacterial Secretion ◽  
Bacterial Secretion System

The microbial constituency of a host-associated microbiome emerges from a complex physical and chemical interplay of microbial colonization factors, host surface conditions, and host immunological responses. To fill unique niches within a host, bacteria encode surface and secreted proteins that enable interactions with and responses to the host and cooccurring microbes.

scholarly journals Association between Type 2 Diabetes, Obesity and Key Immunological Components of IgE-mediated Inflammation

Folia Medica ◽  
2017 ◽  
Vol 59 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Raditsa N. Sokolova ◽  
Rumyana K. Yankova ◽  
Tsvetana I. Abadjieva ◽  
Tatyana A. Popova ◽  
Maria V. Ivanovska ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Glycemic Control ◽  
Allergic Inflammation ◽  
Allergic Diseases ◽  
Serum Levels ◽  
Total Serum ◽  
Control Group ◽  
Serum Ige ◽  
Ige Mediated

AbstractBackground:Changes in lifestyle and obesity in recent decades have brought about a dramatic increase in type 2 diabetes mellitus (DM2) and allergic diseases. Clinical and epidemiological studies associate obesity with epidemics of allergic diseases. The link between obesity and DM2 with immunological components of IgE-mediated allergic inflammation is not yet conclusively established.Aim:To examine the key immunological components of IgE-mediated allergic inflammation in patients with DM2 and their relationship with glycemic control and anthropometric indicators.Materials and methods:Fifty-five patients with DM2 and 32 healthy controls with normal weight and body mass index (BMI) of 18-24.9 kg/m2were included in the study. Th2-cytokine profile (serum levels of IL-4 and IL-5, pg/ml) and total serum IgE IU/ml were assessed in all participants in the study using ELISA. In patients with DM2, levels of glycated hemoglobin (HbA1c%) in the blood were also measured.Results:Serum levels of IL-4 and IL-5 are significantly higher in patients with DM2 compared to the control group. Serum levels of IL-4 and IL-5 positively correlated with BMI as well as serum levels of IL-4 with waist circumference. Total serum IgE positively correlated with HbA1c.Conclusion:Obesity and poor glycemic control in patients with DM2 affect key immunological components of IgE-mediated allergic inflammation and possibly alter the immune response to allergens and antigens.

scholarly journals DNA Methylation at Birth is Associated with Childhood Serum Immunoglobulin E Levels

2021 ◽  
Vol 14 ◽  
pp. 251686572110081
Author(s):  
Luhang Han ◽  
Akhilesh Kaushal ◽  
Hongmei Zhang ◽  
Latha Kadalayil ◽  
Jiasong Duan ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Gene Ontology ◽  
Cord Blood ◽  
Early Life ◽  
Immunoglobulin E ◽  
Allergic Diseases ◽  
Total Serum ◽  
Gene Ontology Analysis ◽  
Serum Ige ◽  
Cpg Sites

Immunoglobulin E (IgE) is known to play an important role in allergic diseases. Epigenetic traits acquired due to modification of deoxyribonucleic acid (DNA) methylation (DNAm) in early life may have phenotypic consequences through their role in transcriptional regulation with relevance to the developmental origins of diseases including allergy. However, epigenome-scale studies on the longitudinal association of cord blood DNAm with IgE over time are lacking. Our study aimed to examine the association of DNAm at birth with childhood serum IgE levels during early life. Genome-scale DNAm and total serum IgE measured at birth, 5, 8, and 11 years of children in the Taiwan Maternal and Infant Cohort Study were included in the study in the discovery stage. Linear mixed models were implemented to assess the association between cord blood DNAm at ~310K 5′-cytosine-phosphate-guanine-3′ (CpG) sites with repeated IgE measurements, adjusting for cord blood IgE. Identified statistically significant CpGs (at a false discovery rate, FDR, of 0.05) were further tested in an independent replication cohort, the Isle of Wight (IoW) birth cohort. We mapped replicated CpGs to genes and conducted gene ontology analysis using ToppFun to identify significantly enriched pathways and biological processes of the genes. Cord blood DNAm of 273 CpG sites were significantly (FDR = 0.05) associated with IgE levels longitudinally. Among the identified CpGs available in both cohorts (184 CpGs), 92 CpGs (50%) were replicated in the IoW in terms of consistency in direction of associations between DNA methylation and IgE levels later in life, and 16 of the 92 CpGs showed statistically significant associations ( P < .05). Gene ontology analysis identified 4 pathways (FDR = 0.05). The identified 16 CpG sites had the potential to serve as epigenetic markers associated with later IgE production, beneficial to allergic disease prevention and intervention.

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