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Lee H, Cho JK, Park J, Lee H, Fond G, Boyer L, Kim HJ, Park S, Cho W, Lee H, Lee J, Yon DK. Machine Learning-Based Prediction of Suicidality in Adolescents With Allergic Rhinitis: Derivation and Validation in 2 Independent Nationwide Cohorts. J Med Internet Res 2024; 26:e51473. [PMID: 38354043 PMCID: PMC10902766 DOI: 10.2196/51473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/24/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Given the additional risk of suicide-related behaviors in adolescents with allergic rhinitis (AR), it is important to use the growing field of machine learning (ML) to evaluate this risk. OBJECTIVE This study aims to evaluate the validity and usefulness of an ML model for predicting suicide risk in patients with AR. METHODS We used data from 2 independent survey studies, Korea Youth Risk Behavior Web-based Survey (KYRBS; n=299,468) for the original data set and Korea National Health and Nutrition Examination Survey (KNHANES; n=833) for the external validation data set, to predict suicide risks of AR in adolescents aged 13 to 18 years, with 3.45% (10,341/299,468) and 1.4% (12/833) of the patients attempting suicide in the KYRBS and KNHANES studies, respectively. The outcome of interest was the suicide attempt risks. We selected various ML-based models with hyperparameter tuning in the discovery and performed an area under the receiver operating characteristic curve (AUROC) analysis in the train, test, and external validation data. RESULTS The study data set included 299,468 (KYRBS; original data set) and 833 (KNHANES; external validation data set) patients with AR recruited between 2005 and 2022. The best-performing ML model was the random forest model with a mean AUROC of 84.12% (95% CI 83.98%-84.27%) in the original data set. Applying this result to the external validation data set revealed the best performance among the models, with an AUROC of 89.87% (sensitivity 83.33%, specificity 82.58%, accuracy 82.59%, and balanced accuracy 82.96%). While looking at feature importance, the 5 most important features in predicting suicide attempts in adolescent patients with AR are depression, stress status, academic achievement, age, and alcohol consumption. CONCLUSIONS This study emphasizes the potential of ML models in predicting suicide risks in patients with AR, encouraging further application of these models in other conditions to enhance adolescent health and decrease suicide rates.
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Affiliation(s)
- Hojae Lee
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Joong Ki Cho
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY, United States
| | - Jaeyu Park
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Hyeri Lee
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Guillaume Fond
- Assistance Publique-Hôpitaux de Marseille, Research Centre on Health Services and Quality of Life, Aix Marseille University, Marseille, France
| | - Laurent Boyer
- Assistance Publique-Hôpitaux de Marseille, Research Centre on Health Services and Quality of Life, Aix Marseille University, Marseille, France
| | - Hyeon Jin Kim
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Seoyoung Park
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Wonyoung Cho
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
| | - Hayeon Lee
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Jinseok Lee
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Dong Keon Yon
- Department of Regulatory Science, Kyung Hee University, Seoul, Republic of Korea
- Center for Digital Health, Medical Science Research Institute, Kyung Hee University College of Medicine, Seoul, Republic of Korea
- Department of Pediatrics, Kyung Hee University College of Medicine, Seoul, Republic of Korea
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2
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Lee SH, Kim HJ, Lee SY, Hong SJ. Broncho-Vaxom bacterial lysate prevents asthma via acetate enhancement in mouse model. Pediatr Allergy Immunol 2023; 34:e14018. [PMID: 37747743 DOI: 10.1111/pai.14018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 09/26/2023]
Abstract
PURPOSE Broncho-Vaxom (BV) is known to attenuate allergic airway inflammation and chronic bronchitis in humans, but the underlying mechanism of this gut-mediated immunity remains unclear. This study investigated the effects of an oral BV on gut and systemic short-chain fatty acids (SCFAs) and immune responses. METHODS Oral BV was administered daily for 15 days prior to commencing the study in an asthma mouse model. Asthma was induced by ovalbumin (OVA) sensitization followed by a challenge with 1% OVA by inhalation. Asthmatic phenotypes, gut- and systemic- immune responses, and SCFAs in the cecum and blood were then investigated. RESULTS Airway hyperresponsiveness, total immunoglobulin E production, and pulmonary inflammation were all significantly suppressed by BV. The interleukin-13 level was also suppressed, whereas TGF-β expression was increased, in the lungs of the BV-treated mice. The regulatory T (Treg) cell numbers were increased in the small intestine, and the acetate level was increased in the cecum and serum after BV treatment. The levels of acetate in the cecum and serum were negatively correlated with airway hyperresponsiveness and with the eosinophil numbers in the BAL fluid of the OVA-induced mice. There was a positive correlation between the acetate levels in the feces and serum and the lung expression of TGF-β in the asthma mice. CONCLUSIONS Oral BV administration appears to prevent allergic inflammation by enhancing Treg cell proliferation and acetate production in an asthmatic mouse model.
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Affiliation(s)
- Seung-Hwa Lee
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ha-Jung Kim
- Department of Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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3
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Nahm DH. Regulatory T Cell-Targeted Immunomodulatory Therapy for Long-Term Clinical Improvement of Atopic Dermatitis: Hypotheses and Perspectives. Life (Basel) 2023; 13:1674. [PMID: 37629531 PMCID: PMC10455293 DOI: 10.3390/life13081674] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/27/2023] Open
Abstract
Atopic dermatitis (AD) is a chronically relapsing inflammatory skin disorder characterized by itching and eczematous lesions. It is often associated with a personal or familial history of allergic diseases. Allergic inflammation induced by immunoglobulin E and T-helper type 2 (Th2) cell responses to common environmental agents has been suggested to play an essential role in AD pathogenesis. The standard therapies for AD, including topical or systemic agents, focus on controlling skin inflammation. Recently developed monoclonal antibody to interleukin-4 receptor alpha or Janus kinase inhibitors can provide significant clinical improvements in patients with AD by inhibiting Th2 cell-mediated skin inflammation. However, the clinical efficacy of the Th2 cell-targeted therapy is transient and incomplete in patients with AD. Patients with AD are seeking a permanent cure. Therefore, the development of novel immunomodulatory strategies that can improve a long-term clinical outcome and provide a long-term treatment-free clinical remission of AD (disease-modifying therapy) is needed. Regulatory T (Treg) cells play a critical role in the maintenance of immune tolerance and suppress the development of autoimmune and allergic diseases. This review provides three working hypotheses and perspectives for the treatment of AD by Treg cell activation. (1) A decreased number or function of Treg cells is a critical event that causes the activation of Th2 cells, leading to the development and maintenance of AD. (2) Activation of Treg cells is an effective therapeutic approach for AD. (3) Many different immunomodulatory strategies activating Treg cells can provide a long-term clinical improvement of AD by induction of immune tolerance. The Treg cell-targeted immunomodulatory therapies for AD include allergen immunotherapy, microbiota, vitamin D, polyvalent human immunoglobulin G, monoclonal antibodies to the surface antigens of T cell or antigen-presenting cell, and adoptive transfer of autologous Treg cells or genetically engineered Treg cells expanded in vitro.
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Affiliation(s)
- Dong-Ho Nahm
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
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4
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Cox AJ, Ramsey R, Ware RS, Besseling-van der Vaart I, Cripps AW, West NP. Assessment of a Multispecies Probiotic Supplement for Relief of Seasonal Allergic Rhinitis: A Randomized Double-Blind Placebo-Controlled Trial. JOURNAL OF INTEGRATIVE AND COMPLEMENTARY MEDICINE 2023; 29:313-320. [PMID: 37196163 DOI: 10.1089/jicm.2022.0734] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Background: Early phase clinical research provided initial support for the use of a multispecies probiotic supplement to improve quality of life (QoL) in adults with seasonal allergic rhinitis (AR) and reduce the use of AR symptom relieving medication. This study aimed to confirm these early phase findings in a double-blind randomized placebo-controlled trial. Methods: Individuals, aged 18-65 years, with a minimum 2-year history of AR, moderate-to-severe AR symptoms, and a positive radio-allergosorbent test to Bermuda (Couch) Grass were randomized to receive either a multispecies probiotic supplement (total colony-forming units 4 × 109/day) or placebo twice daily for 8 weeks. A mini-rhinoconjunctivitis quality of life questionnaire (mRQLQ) scale was administered at screening, days 0, 28, and 56. The proportion of participants with a >0.7 improvement in mRQLQ was the primary outcome. Participants also completed a daily symptom and medication diary during the supplementation period. Results: There were 165 participants randomized, with 142 included in the primary outcome analysis. The percentage of participants meeting the threshold for a clinically meaningful reduction in the mRQLQ from days 0 to 56 was not significantly different between groups (61% vs. 62%, p = 0.90). However, 76 participants had a clinically meaningful improvement in QoL (decrease in mRQLQ >0.7) prior to the start of supplementation (screening to day 0). Conclusion: Changes in self-reported QoL and other disease severity metrics between screening and the start of supplementation limited the ability to discern an effect of supplementation and highlight the need for adaptive clinical trial designs in allergy research. Clinical Trial Registration: The trial was registered with the Australia and New Zealand Clinical Trials Registry (ACTRN12619001319167).
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Affiliation(s)
- Amanda J Cox
- Menzies Health Institute QLD, School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland, Australia
| | - Rebecca Ramsey
- Menzies Health Institute QLD, School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland, Australia
| | - Robert S Ware
- Menzies Health Institute QLD, School Medicine and Dentistry, Griffith University, Southport, Queensland, Australia
| | | | - Allan W Cripps
- Menzies Health Institute QLD, School Medicine and Dentistry, Griffith University, Southport, Queensland, Australia
| | - Nicholas P West
- Menzies Health Institute QLD, School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland, Australia
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Sori N, Kunnummal SP, Peddha MS, Khan M. Prophylactic effect of pectic oligosaccharides against poly I: C- induced virus-like infection in BALB/c mice. J Food Biochem 2022; 46:e14459. [PMID: 36240117 DOI: 10.1111/jfbc.14459] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/08/2022] [Accepted: 09/21/2022] [Indexed: 01/14/2023]
Abstract
Pectin oligosaccharides (POS) are pectin-derived prebiotics that exerts anti-inflammatory effects on the host and stimulates an innate immune response. The role of POS in protective immunity against viral infections is not very obvious. Therefore, the prophylactic effect of POS in the mouse model induced by Poly I: C mimicking viral infection was examined. Mice fed POS showed a significant (p ≤ .05) increase in IgG, sIgA, IgA, IL-12, and a significant (p ≤ .05) decrease in the concentration of pro-inflammatory cytokines IL-5, IL-6, IL-13 and IL-17 in lung and blood serum after Poly I: C stimulation. However, the control group could not inhibit pro-inflammatory cytokines. POS also promoted the growth of the Lactobacillus, Prevotella, Rilenellaceae, and Lachanospiraceae groups. Therefore, this study demonstrate that POS has the potiential to protect against viral inflammation by altering gut microbiota and activating mucosal immunity. PRACTICAL APPLICATIONS: POS is 2-10 mer oligomers of pectin. The human gastrointestinal tract lacks the enzyme to break down POS. They are fermented by gut bacteria in the colon and stimulate the proliferation of specific gut bacteria that are positively correlated with the production of anti-inflammatory cytokines and SCFA. POS also stimulates the secretion of IgA, which inhibits bacterial and viral adhesion and protects the host. Therefore, POS can be used as a functional food ingredient in food to stimulate a specific group of gut bacteria and enhance preventive immunity.
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Affiliation(s)
- Nidhi Sori
- Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India
| | - Saarika Pothuvan Kunnummal
- Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India.,CSIR-Academy of Scientific & Innovative Research, Ghaziabad, India
| | - MuthuKumar Serva Peddha
- CSIR-Academy of Scientific & Innovative Research, Ghaziabad, India.,Department of Biochemistry, CSIR - Central Food Technological Research Institute, Mysuru, India
| | - Mahejibin Khan
- Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India.,CSIR-Academy of Scientific & Innovative Research, Ghaziabad, India
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Kim H, Nam BY, Park J, Song S, Kim WK, Lee K, Nam TW, Park JT, Yoo TH, Kang SW, Ko G, Han SH. Lactobacillus acidophilus KBL409 reduces kidney fibrosis via immune modulatory effects in mice with chronic kidney disease. Mol Nutr Food Res 2022; 66:e2101105. [PMID: 36059191 DOI: 10.1002/mnfr.202101105] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 08/10/2022] [Indexed: 11/10/2022]
Abstract
SCOPE Intestinal dysbiosis has been reported to play an important role in the pathogenesis of various diseases, including chronic kidney disease (CKD). Here, we aimed to evaluate whether probiotic supplements can have protective effects against kidney injury in an animal model of CKD. METHODS AND RESULTS An animal model of CKD was established by feeding C57BL/6 mice a diet containing 0.2% adenine. These model mice were administered Lactobacillus acidophilus KBL409 daily for 4 weeks. Features of adenine-induce CKD (Ade-CKD) mice, such as prominent kidney fibrosis and higher levels of serum creatinine and albuminuria were improved by administration of KBL409. Ade-CKD mice also exhibited a disrupted intestinal barrier and elevated levels of TNF-α, IL-6, and 8-hydroxy-2'-deoxyguanosine. These changes were attenuated by KBL409. Administration of KBL409 significantly reduced macrophage infiltration and promoted a switch to the M2 macrophage phenotype and increasing regulatory T cells. Notably, the NLRP3 inflammasome pathway was activated in the kidneys of Ade-CKD and decreased by KBL409. In primary kidney tubular epithelial cells treated with p-cresyl sulfate, short-chain fatty acids significantly increased M2 macrophage polarization factors and decreased profibrotic markers. CONCLUSIONS These results demonstrate that supplementation with the probiotic KBL409 has beneficial immunomodulating effects and protects against kidney injury. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hyoungnae Kim
- Division of Nephrology, Soonchunhyang University Seoul Hospital, Seoul, Korea.,Graduate School, Yonsei University College of Medicine, Seoul, Korea
| | - Bo Young Nam
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Jimin Park
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | | | - Woon-Ki Kim
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | | | | | - Jung Tak Park
- Yonsei University, Institute of Kidney Disease Research, College of Medicine, Department of Internal Medicine, Seoul, Korea
| | - Tae-Hyun Yoo
- Yonsei University, Institute of Kidney Disease Research, College of Medicine, Department of Internal Medicine, Seoul, Korea
| | - Shin-Wook Kang
- Yonsei University, Institute of Kidney Disease Research, College of Medicine, Department of Internal Medicine, Seoul, Korea
| | - GwangPyo Ko
- KoBiolabs, Inc., Seoul, Korea.,Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Seung Hyeok Han
- Yonsei University, Institute of Kidney Disease Research, College of Medicine, Department of Internal Medicine, Seoul, Korea
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7
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Jeong KT, Do JH, Lee SH, Lee JK, Chang WS. Association of heat shock protein 8 with atopic march in a murine experimental model. PeerJ 2022; 10:e13247. [PMID: 35462760 PMCID: PMC9029368 DOI: 10.7717/peerj.13247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 03/20/2022] [Indexed: 01/15/2023] Open
Abstract
Background Atopic march (AM), a unique characteristic of allergic diseases, refers to the sequential progression of atopic dermatitis (AD) in infants to allergic asthma and allergic rhinitis in children and young adults, respectively. Although there are several studies on AM, the establishment of an AM murine model to expand our understanding of the underlying mechanism and to identify the potential biomarkers is yet to be achieved. In this study, an improved murine model was established by applying a method to minimize skin irritation in inducing AD, and it was used to perform integrated analyses to discover candidate biomarkers. Methods To induce atopic dermatitis, 2,4-dinitrochlorobenzene (DNCB) was applied to the ear skin once a week, and this was continued for 5 weeks. From the second application of DNCB, Dermatophagoides pteronyssinus (Dp) extract was applied topically 2 days after each DNCB application; this was continued for 4 weeks. Dp sensitization and intranasal challenges were then performed for 4 weeks to develop conditions mimicking AM. Results Exacerbated airway inflammation and allergic responses observed in the AM-induced group suggested successful AM development in our model. Two-dimensional gel electrophoresis (2-DE) and mass spectrometry analysis identified 753 candidate proteins from 124 2-DE spots differentially expressed among the experimental groups. Functional analyses, such as Gene Ontology (GO) annotation and protein-protein interaction (PPI) analysis were conducted to investigate the relationship among the candidate proteins. Seventy-two GO terms were significant between the two groups; heat shock protein 8 (Hspa8) was found to be included in six of the top 10 GO terms. Hspa8 scored high on the PPI parameters as well. Conclusion We established an improved murine model for AM and proposed Hspa8 as a candidate biomarker for AM.
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8
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Ahn JR, Lee SH, Kim B, Nam MH, Ahn YK, Park YM, Jeong SM, Park MJ, Song KB, Lee SY, Hong SJ. Ruminococcus gnavus ameliorates atopic dermatitis by enhancing Treg cell and metabolites in BALB/c mice. Pediatr Allergy Immunol 2022; 33:e13678. [PMID: 34633714 DOI: 10.1111/pai.13678] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Ruminococcus gnavus (R. gnavus) are mucin-degrading gut bacteria that play a key role in the early colonization of the gut by serving as endogenous sources of nutrients. They can also influence immune development. We had previously reported a lower abundance of R. gnavus in infants with atopic dermatitis (AD) compared with that in healthy subjects. However, the underlying mechanisms remain unclear. In this study, we investigated the effect of orally administered R. gnavus on antibiotic treatment-induced gut dysbiosis (and the underlying mechanism) in a mouse model of AD. METHODS Four-week-old female BALB/C mice were administered antibiotic cocktails for 2 weeks. R. gnavus was orally administered throughout the study duration. At 6 weeks of age, AD was induced by epidermal sensitization with ovalbumin. AD phenotypes and systemic and gut immune responses were investigated. RESULTS Orally administered R. gnavus significantly reduced AD-associated parameters (i.e., transepidermal water loss, clinical score, total serum immunoglobulin (Ig) E level, OVA-specific IgE level, and skin inflammation). R. gnavus treatment also resulted in significant downregulation of T helper 2-related cytokine mRNA and upregulation of interleukin (IL)-10 and Foxp3 in the skin. The population of CD4+ FOXP3+ T cells in mesenteric- and skin-draining lymph nodes and butyrate levels in the cecum increased in R. gnavus-administered AD mice. CONCLUSIONS Immune modulation by orally administered R. gnavus may alleviate AD symptoms through the enhancement of regulatory T-cell counts and short-chain fatty acids production in AD mice.
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Affiliation(s)
- Jae-Rin Ahn
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hwa Lee
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Byunghyun Kim
- Korea Basic Science Institute, Seoul Center, Seoul, Korea
| | - Myung Hee Nam
- Korea Basic Science Institute, Seoul Center, Seoul, Korea
| | - Yoon Kyung Ahn
- Korea Basic Science Institute, Western Seoul Center, Seoul, Korea
| | - Yoon Mee Park
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Seon-Mi Jeong
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Min Jee Park
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kun Baek Song
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Zhou Y, Duan L, Zeng Y, Niu L, Pu Y, Jacobs JP, Chang C, Wang J, Khalique A, Pan K, Fang J, Jing B, Zeng D, Ni X. The Panda-Derived Lactobacillus plantarum G201683 Alleviates the Inflammatory Response in DSS-Induced Panda Microbiota-Associated Mice. Front Immunol 2021; 12:747045. [PMID: 34956180 PMCID: PMC8692892 DOI: 10.3389/fimmu.2021.747045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 11/15/2021] [Indexed: 11/23/2022] Open
Abstract
Intestinal diseases are one of the main causes of captive giant panda death. Their special dietary habits and gastrointestinal tract structure often lead to intestinal epithelium damage and secondary intestinal infection. The captive giant panda is predisposed to suffer from microbiota dysbiosis due to long-term artificial feeding and antibiotic misuse. However, there are few reported probiotics to treat giant panda enteritis and the associated dysbiosis. This study aims to elucidate the mechanism by which Lactobacillus plantarum G201683 (L. plantarum G83), a promising panda-derived probiotic, exerts a protective effect on intestinal inflammation in the dextran sulfate sodium- (DSS) induced panda microbiota-associated (DPMA) mouse model. The DPMA mouse was generated by antibiotic treatment and 5% DSS drinking water administration to assess the effect of L. plantarum G83 on intestinal inflammation and microbiota in vivo. Our results demonstrated the successful generation of a DPMA mouse model with Enterobacteriaceae enrichment, consistent with the giant panda intestinal microbiota. L. plantarum G83 decreased clinical and histological severity of intestinal inflammation, enhanced intestinal tight junction protein expression (ZO-1, Occludin) and alleviated inflammatory cytokine production (TNF-) in the colon of DPMA mice. The administration of L. plantarum G83 altered the microbiota composition by decreasing pathogen associated taxa such as E. coli and increasing abundance of beneficial bacteria including Bifidobacterium spp. These changes in microbiota composition were associated with an increased concentration of short chain fatty acids (SCFA), reduced NF-κB signaling, and an altered balance of T helper cell subsets. Our findings support L. plantarum G83 as a promising probiotic to treat intestinal inflammation in the giant panda.
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Affiliation(s)
- Yi Zhou
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Ling Duan
- Central Station of Animal Feed Affairs of Sichuan Province, Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu, China
| | - Yan Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lili Niu
- Chengdu Wildlife Institute, Chengdu Zoo, Chengdu, China
| | - Yang Pu
- Chengdu Wildlife Institute, Chengdu Zoo, Chengdu, China
| | - Jonathan P. Jacobs
- The Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles (UCLA), Los Angeles, CA, United States
| | - Candace Chang
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles (UCLA), Los Angeles, CA, United States
| | - Jie Wang
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Abdul Khalique
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Kangcheng Pan
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Jing Fang
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Bo Jing
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Dong Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Ni
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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10
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Javanshir N, Hosseini GNG, Sadeghi M, Esmaeili R, Satarikia F, Ahmadian G, Allahyari N. Evaluation of the Function of Probiotics, Emphasizing the Role of their Binding to the Intestinal Epithelium in the Stability and their Effects on the Immune System. Biol Proced Online 2021; 23:23. [PMID: 34847891 PMCID: PMC8903605 DOI: 10.1186/s12575-021-00160-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
Due to the importance of using cost-effective methods for therapeutic purposes, the function of probiotics as safe microorganisms and the study of their relevant functional mechanisms have recently been in the spotlight. Finding the mechanisms of attachment and stability and their beneficial effects on the immune system can be useful in identifying and increasing the therapeutic effects of probiotics. In this review, the functional mechanisms of probiotics were comprehensively investigated. Relevant articles were searched in scientific sources, documents, and databases, including PubMed, NCBI, Bactibace, OptiBac, and Bagel4. The most important functional mechanisms of probiotics and their effects on strengthening the epithelial barrier, competitive inhibition of pathogenic microorganisms, production of antimicrobials, binding and interaction with the host, and regulatory effects on the immune system were discussed. In this regard, the attachment of probiotics to the epithelium is very important because the prerequisite for their proper functioning is to establish a proper connection to the epithelium. Therefore, more attention should be paid to the binding effect of probiotics, including sortase A, a significant factor involved in the expression of sortase-dependent proteins (SDP), on their surface as mediators of intestinal epithelial cell binding. In general, by investigating the functional mechanisms of probiotics, it was concluded that the mechanism by which probiotics regulate the immune system and adhesion capacity can directly and indirectly have preventive and therapeutic effects on a wide range of diseases. However, further study of these mechanisms requires extensive research on various aspects.
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Affiliation(s)
- Nahid Javanshir
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology. (NIGEB), P.O. Box: 14155-6343, Tehran, Iran
| | | | - Mahdieh Sadeghi
- Department of Science, Islamic Azad University - Parand Branch, Parand, Iran
| | | | - Fateme Satarikia
- Department of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Gholamreza Ahmadian
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology. (NIGEB), P.O. Box: 14155-6343, Tehran, Iran.
| | - Najaf Allahyari
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology. (NIGEB), P.O. Box: 14155-6343, Tehran, Iran.
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11
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Jackson-Cowan L, Cole EF, Arbiser JL, Silverberg JI, Lawley LP. TH2 sensitization in the skin-gut-brain axis: How early-life Th2-mediated inflammation may negatively perpetuate developmental and psychologic abnormalities. Pediatr Dermatol 2021; 38:1032-1039. [PMID: 34338364 DOI: 10.1111/pde.14657] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We recently reported children with comorbid atopic dermatitis (AD), asthma, allergic rhinitis, and food allergies displaying a 2.7-fold increase in developmental delays.2 To this end, we hypothesize unregulated increases in T helper-2 (Th2)-driven inflammation, such as those seen in atopic diseases, can exert deleterious effects on the developing brain. Recognizing that available information is incomplete and that many potential associations are not firmly established, we speculate these effects underlie the association between Th2 sensitization and cognitive dysfunction in children. In this review, we explore the role of Th2 sensitization in the skin-gut-brain axis and explain how it can lead to reduced connectivity and transmission in the developing brain. With a focus on AD, we explore the association between Th2 sensitization and developmental abnormalities such as developmental delays, memory impairment, autism spectrum disorder (ASD), and epilepsy/seizures. As such, we review the available literature to examine the impact of increased IL-4 exposure in early life on the brain. We explore the possible association between Th2 sensitization and psychologic dysfunction such as attention-deficit/hyperactivity disorder (ADHD), depression, anxiety, and suicidal ideation. We also examine the impact that increased exposure to glucocorticoids and neurotrophins in early life exerts on the developing brain. Last, we discuss future directions for the advancement of our knowledge as a scientific community including possible interventions to reduce developmental and psychologic aberrations in children.
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Affiliation(s)
- LaDonya Jackson-Cowan
- AU/UGA Medical Partnership, The Medical College of Georgia at Augusta University, University of Georgia College of Pharmacy, Athens, GA, USA
| | - Emily F Cole
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jack L Arbiser
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jonathan I Silverberg
- Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Leslie P Lawley
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA
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12
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The Role of the Intestinal Microbiota in Atopic Dermatitis. INTERNATIONAL JOURNAL OF DERMATOLOGY AND VENEREOLOGY 2021. [DOI: 10.1097/jd9.0000000000000152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Bawany F, Beck LA, Järvinen KM. Halting the March: Primary Prevention of Atopic Dermatitis and Food Allergies. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2021; 8:860-875. [PMID: 32147139 DOI: 10.1016/j.jaip.2019.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/13/2022]
Abstract
Atopic dermatitis (AD) is one of the most common inflammatory skin conditions, affecting 15% to 30% of children and 2% to 10% of adults. Population-based studies suggest that having AD is associated with subsequent development of other atopic diseases, in what is known as the "atopic march." We will provide an overview of studies that investigate primary prevention strategies for the first 2 diseases in the march, namely, AD and food allergies (FA). These strategies include emollients, breastfeeding, microbial exposures, probiotics, vitamin D and UV light, water hardness, and immunotherapy. Some studies, including randomized controlled trials on emollients and microbial supplementation, have found encouraging results; however, the evidence remains limited and contradictory. With regard to breastfeeding, microbial and lifestyle exposures, vitamin D and UV light, water hardness, and immunotherapy, the lack of randomized controlled trials makes it difficult to draw definitive conclusions. Current American Academy of Pediatrics guidelines support the idea that breastfeeding for 3 to 4 months can decrease AD incidence in children less than 2 years old. Recommendations regarding a direct relationship between breastfeeding on FA, however, cannot be made because of insufficient data. Regarding microbial supplementation, most guidelines do not recommend probiotics or prebiotics for the purpose of preventing allergic diseases because of limited evidence. Before definitive conclusions can be made regarding these interventions, more well-designed, longitudinal, and randomized controlled trials, particularly in at-risk populations, are required.
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Affiliation(s)
- Fatima Bawany
- School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY
| | - Lisa A Beck
- Department of Dermatology, University of Rochester Medical Center, Rochester, NY.
| | - Kirsi M Järvinen
- Department of Pediatrics, Division of Allergy and Immunology & Center for Food Allergy, University of Rochester Medical Center, Rochester, NY
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14
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Massimini M, Dalle Vedove E, Bachetti B, Di Pierro F, Ribecco C, D'Addario C, Pucci M. Polyphenols and Cannabidiol Modulate Transcriptional Regulation of Th1/Th2 Inflammatory Genes Related to Canine Atopic Dermatitis. Front Vet Sci 2021; 8:606197. [PMID: 33763461 PMCID: PMC7982812 DOI: 10.3389/fvets.2021.606197] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/02/2021] [Indexed: 12/12/2022] Open
Abstract
Canine atopic dermatitis (AD) is a multifactorial allergic disease associated with immune and abnormal skin barrier dysfunction and it is one of the primary causes of pruritus. Using a novel in vitro model of AD, here we tried to revert the alteration of transcriptional regulation of AD canine key genes testing a nutraceutical mixture containing flavonoids, stilbene, and cannabinoids, which are already well-known for their applications within dermatology diseases. The nutraceutical mixture induced in inflamed cells a significant downregulation (p < 0.05) of the gene expression of ccl2, ccl17, and tslp in keratinocytes and of ccl2, ccl17, and il31ra in monocytes. Consistent with the observed alterations of tslp, ccl2, ccl17, and il31ra messenger RNA (mRNA) levels, a significant increase (p < 0.05) of DNA methylation at specific CpG sites on the gene regulatory regions was found. These results lay the foundation for the use of these natural bioactives in veterinary medicine and provide a model for deeper understanding of their mechanisms of action, with potential translation to human research.
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Affiliation(s)
| | | | | | | | | | - Claudio D'Addario
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Mariangela Pucci
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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15
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Chen C, Li H. The Inhibitory Effect of Gut Microbiota and Its Metabolites on Colorectal Cancer. J Microbiol Biotechnol 2020; 30:1607-1613. [PMID: 32522960 PMCID: PMC9728159 DOI: 10.4014/jmb.2002.02032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/24/2020] [Accepted: 05/31/2020] [Indexed: 12/15/2022]
Abstract
Colorectal cancer (CRC) is regarded as one of the most common and deadly forms of cancer. Gut microbiota is vital to retain and promote several functions of intestinal. Although previous researches have shown that some gut microbiota have the abilities to inhibit tumorigenesis and prevent cancer from progressing, they have not yet clearly identified associative mechanisms. This review not only concentrates on the antitumor effects of metabolites produced by gut microbiota, for example, SCFA, ferrichrome, urolithins, equol and conjugated linoleic acids, but also the molecules which constituted the bacterial cell wall have the antitumor effect in the host, including lipopolysaccharide, lipoteichoic acid, β-glucans and peptidoglycan. The aim of our review is to develop a possible therapeutic method, which use the products of gut microbiota metabolism or gut microbiota constituents to help treat or prevent colorectal cancer.
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Affiliation(s)
- Chao Chen
- Department of Colorectal Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 30000, Zhejiang Province, P.R. China
| | - Huajun Li
- Department of Microecology, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
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16
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Probiotics function and modulation of the immune system in allergic diseases. Allergol Immunopathol (Madr) 2020; 48:771-788. [PMID: 32763025 DOI: 10.1016/j.aller.2020.04.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/25/2020] [Accepted: 04/27/2020] [Indexed: 02/08/2023]
Abstract
Allergic diseases have been a global problem over the past few decades. The effect of allergic diseases on healthcare systems and society is generally remarkable and is considered as one of the most common causes of chronic and hospitalized disease. The functional ability of probiotics to modulate the innate/acquired immune system leads to the initiation of mucosal/systemic immune responses. Gut microbiota plays a beneficial role in food digestion, development of the immune system, control/growth of the intestinal epithelial cells and their differentiation. Prescribing probiotics causes a significant change in the intestinal microflora and modulates cytokine secretion, including networks of genes, TLRs, signaling molecules and increased intestinal IgA responses. The modulation of the Th1/Th2 balance is done by probiotics, which suppress Th2 responses with shifts to Th1 and thereby prevent allergies. In general, probiotics are associated with a decrease in inflammation by increasing butyrate production and induction of tolerance with an increase in the ratio of cytokines such as IL-4, IL-10/IFN-γ, Treg/TGF-β, reducing serum eosinophil levels and the expression of metalloproteinase-9 which contribute to the improvement of the allergic disease's symptoms. Finally, it can be said that the therapeutic approach to immunotherapy and the reduction of the risk of side effects in the treatment of allergic diseases is the first priority of treatment and the final approach that completes the first priority in maintaining the condition and sustainability of the tolerance along with the recovery of the individual.
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17
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Liu Y, Mian MF, McVey Neufeld KA, Forsythe P. CD4 +CD25 + T Cells are Essential for Behavioral Effects of Lactobacillus rhamnosus JB-1 in Male BALB/c mice. Brain Behav Immun 2020; 88:451-460. [PMID: 32276029 DOI: 10.1016/j.bbi.2020.04.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 04/06/2020] [Accepted: 04/06/2020] [Indexed: 01/01/2023] Open
Abstract
Over the past decade there has been increasing interest in the involvement of the microbiota-gut-brain axis in mental health. However, there are major gaps in our knowledge regarding the complex signaling systems through which gut microbes modulate the CNS. The immune system is a recognized mediator in the bidirectional communication continuously occurring between gut and brain. We previously demonstrated that Lactobacillus rhamnosus JB-1 (JB-1), a bacterial strain that has anxiolytic- and antidepressant-like effects in mice, modulates the immune system through induction of immunosuppressive T regulatory cells. Here we examined a potential causal relationship between JB-1 induced regulatory T cells and the observed effects on behaviour. We found that depletion of regulatory T cells, via treatment with monoclonal antibody against CD25, inhibited the antidepressant- and anxiolytic-like effects induced by 4-week oral administration of JB-1 in mice. Ly6Chi monocytes were found to be decreased in JB-1 fed mice with intact regulatory T cells, but not in JB-1 fed mice following depletion. Furthermore, adoptive transfer of CD4+CD25+ cells, from JB-1 treated donor mice, but not from controls, induced antidepressant- and anxiolytic-like effects in recipient mice. Ly6Chi monocytes were also significantly decreased in mice receiving CD4+CD25+ cells from JB1 fed donors. This study identifies cells within the CD4+CD25+ population, most likely regulatory T cells, as both necessary and sufficient in JB-1-induced antidepressant- and anxiolytic-like effects in mice, providing novel mechanistic insight into microbiota-gut-brain communication in addition to highlighting the potential for immunotherapy in psychiatric disorders.
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Affiliation(s)
- Yunpeng Liu
- McMaster Brain-Body Institute, The Research Institute of St. Joseph's Hamilton, Hamilton, Ontario, Canada
| | - M Firoz Mian
- McMaster Brain-Body Institute, The Research Institute of St. Joseph's Hamilton, Hamilton, Ontario, Canada
| | - Karen-Anne McVey Neufeld
- McMaster Brain-Body Institute, The Research Institute of St. Joseph's Hamilton, Hamilton, Ontario, Canada; Department of Pathology & Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Paul Forsythe
- McMaster Brain-Body Institute, The Research Institute of St. Joseph's Hamilton, Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Firestone Institute for Respiratory Health, St. Joseph's Healthcare and Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
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18
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Kim HJ, Lee SH, Hong SJ. Antibiotics-Induced Dysbiosis of Intestinal Microbiota Aggravates Atopic Dermatitis in Mice by Altered Short-Chain Fatty Acids. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2020; 12:137-148. [PMID: 31743970 PMCID: PMC6875482 DOI: 10.4168/aair.2020.12.1.137] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 09/23/2019] [Accepted: 10/03/2019] [Indexed: 12/18/2022]
Abstract
PURPOSE Alterations in the intestinal microbiota in early life affects the development of atopic dermatitis (AD) in humans. This study aimed to further investigate the effects of gut dysbiosis in early life in an ovalbumin (OVA)-induced mouse model of AD. METHODS The AD mouse model was developed by serial OVA sensitization and mice were treated with an antibiotic cocktail in their drinking water for 2 weeks before primary sensitization. Probiotics (Lactobacillus rhamnosus, 1 × 10⁹ CFU) or 100 μL of fresh fecal supernatant were orally administered daily from 1 week before the first sensitization until the end of the study. RESULTS The AD mice which received antibiotics had significantly aggravated phenotypes, including clinical score, transepidermal water loss, and histopathology, compared to those treated with healthy feces or probiotics. Total systemic immunoglobulin E production and skin interleukin (IL) 4 levels were significantly increased in the antibiotic-treated mice compared to the other groups. Antibiotic treatment also increased the levels of IL17 and group 3 innate lymphoid cells (ILC3) in the gut and significantly suppressed the production of short-chain fatty acids (SCFAs) and decreased the number FOXP3⁺ cells. CONCLUSIONS Our results suggest that the status of the gut microbiota in early life in the mouse may play a crucial role in AD development through intestinal SCFA production through regulate the numbers of CD4⁺IL17⁺/CD4⁺FOXP3⁺ regulatory T cells and ILC3s.
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Affiliation(s)
- Ha Jung Kim
- Department of Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Seung Hwa Lee
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Soo Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Environmental Health Center, Asan Medical Center, Seoul, Korea.
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19
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Stockert K. Allergie, Mikrobiom und weitere epigenetische Faktoren. ALLERGIEPRÄVENTION 2020. [PMCID: PMC7123400 DOI: 10.1007/978-3-662-58140-7_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Xue JM, Ma F, An YF, Suo LM, Geng XR, Song YN, Mo LH, Luo XQ, Zhang XW, Liu DB, Zhao CQ, Yang PC. Probiotic extracts ameliorate nasal allergy by inducing interleukin-35-producing dendritic cells in mice. Int Forum Allergy Rhinol 2019; 9:1289-1296. [PMID: 31623025 DOI: 10.1002/alr.22438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/22/2019] [Accepted: 09/03/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND The therapeutic efficacy of allergic rhinitis (AR) needs to be improved. Probiotics have immunoregulatory functions. In this study we evaluated the effects of protein extracts of probiotics in the amelioration of AR. METHODS Extracts of Bifidobacterium infantis (EBI) were prepared by lysing the live probiotics. AR mice were developed to be used to evaluate the therapeutic efficacy of EBI. RESULTS The results show that EBI induced interleukin (IL)-10-producing dendritic cells (DCs) via increasing IL-35 and signal transducer and activator of transcription 3 (STAT3) phosphorylation. IL-10-expressing DCs induced IL-10-producing B cells (B10 cells), with the latter showing immunosuppressive functions. After challenge with specific antigens, AR mice showed sneezing, nasal itch, and increases in serum-specific immunoglobulin E (IgE) and mouse mast cell protease-1; higher levels of T helper 2 (Th2) cytokines (IL-4, 67.17 ± 10.66; IL-5, 62.83 ± 9.70; IL-13, 51.00 ± 6.69, before treatment) in nasal mucosal protein extracts, which were significantly suppressed (IL-4, 27.00 ± 6.66; IL-5, 23.86 ± 4.53; IL-13, 25.67 ± 4.93, after treatment (p < 0.001) by administration with EBI nasal drops. CONCLUSION EBI can suppress AR via inducing B10 cells. Thus, after carrying out required preclinical experiments and tests, EBI has the translational potential to be used in the treatment of AR and other allergic diseases.
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Affiliation(s)
- Jin-Mei Xue
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Fei Ma
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Department of Otolaryngology, Head & Neck Surgery, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yun-Fang An
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Li-Min Suo
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Xiao-Rui Geng
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Yan-Nan Song
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Li-Hua Mo
- Department of Pediatrics, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiang-Qian Luo
- Department of Pediatrics, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiao-Wen Zhang
- Department of Otolaryngology, Head & Neck Surgery, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Da-Bo Liu
- Department of Pediatrics, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Chang-Qing Zhao
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Ping-Chang Yang
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
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21
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Nunes CF, Nogueira JS, Vianna PHO, Ciambarella BT, Rodrigues PM, Miranda KR, Lobo LA, Domingues RMCP, Busch M, Atella GC, Vale AM, Bellio M, Nóbrega A, Canto FB, Fucs R. Probiotic treatment during neonatal age provides optimal protection against experimental asthma through the modulation of microbiota and T cells. Int Immunol 2019; 30:155-169. [PMID: 29420746 DOI: 10.1093/intimm/dxy011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 02/02/2018] [Indexed: 02/06/2023] Open
Abstract
The incidence of allergic diseases, which increased to epidemic proportions in developed countries over the last few decades, has been correlated with altered gut microbiota colonization. Although probiotics may play a critical role in the restoration of gut homeostasis, their efficiency in the control of allergy is controversial. Here, we aimed to investigate the effects of probiotic treatment initiated at neonatal or adult ages on the suppression of experimental ovalbumin (OVA)-induced asthma. Neonatal or adult mice were orally treated with probiotic bacteria and subjected to OVA-induced allergy. Asthma-like symptoms, microbiota composition and frequencies of the total CD4+ T lymphocytes and CD4+Foxp3+ regulatory T (Treg) cells were evaluated in both groups. Probiotic administration to neonates, but not to adults, was necessary and sufficient for the absolute prevention of experimental allergen-induced sensitization. The neonatally acquired tolerance, transferrable to probiotic-untreated adult recipients by splenic cells from tolerant donors, was associated with modulation of gut bacterial composition, augmented levels of cecum butyrate and selective accumulation of Treg cells in the airways. Our findings reveal that a cross-talk between a healthy microbiota and qualitative features inherent to neonatal T cells, especially in the Treg cell subset, might support the beneficial effect of perinatal exposure to probiotic bacteria on the development of long-term tolerance to allergens.
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Affiliation(s)
- Caroline Fraga Nunes
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Departamento de Imunobiologia, Instituto de Biologia - Universidade Federal Fluminense, Niterói - RJ, Brazil
| | - Jeane S Nogueira
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Departamento de Imunobiologia, Instituto de Biologia - Universidade Federal Fluminense, Niterói - RJ, Brazil
| | - Pedro Henrique Oliveira Vianna
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Karla Rodrigues Miranda
- Faculdade de Farmácia - Universidade Federal do Rio de Janeiro, Rio de Janeiro/Campus Macaé, Macaé - RJ, Brazil
| | - Leandro Araújo Lobo
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro - RJ, Brazil
| | | | - Mileane Busch
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro - RJ, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, INCT-EM, Rio de Janeiro - RJ, Brazil
| | - Georgia Correa Atella
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro - RJ, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, INCT-EM, Rio de Janeiro - RJ, Brazil
| | - André Macedo Vale
- Laboratório de Imunorreceptores e Sinalização, Instituto de Biofísica Carlos Chagas Filho - Universidade Federal do Rio de Janeiro, Rio de Janeiro - RJ, Brazil
| | - Maria Bellio
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alberto Nóbrega
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fábio B Canto
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Goés (IMPG) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Departamento de Imunobiologia, Instituto de Biologia - Universidade Federal Fluminense, Niterói - RJ, Brazil
| | - Rita Fucs
- Departamento de Imunobiologia, Instituto de Biologia - Universidade Federal Fluminense, Niterói - RJ, Brazil
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22
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Cutting Edge: Probiotics and Fecal Microbiota Transplantation in Immunomodulation. J Immunol Res 2019; 2019:1603758. [PMID: 31143780 PMCID: PMC6501133 DOI: 10.1155/2019/1603758] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 04/01/2019] [Indexed: 12/19/2022] Open
Abstract
Probiotics are commensal or nonpathogenic microbes that confer beneficial effects on the host through several mechanisms such as competitive exclusion, antibacterial effects, and modulation of immune responses. Some probiotics have been found to regulate immune responses via immune regulatory mechanisms. T regulatory (Treg) cells, T helper cell balances, dendritic cells, macrophages, B cells, and natural killer (NK) cells can be considered as the most determinant dysregulated mediators in immunomodulatory status. Recently, fecal microbiota transplantation (FMT) has been defined as the transfer of distal gut microbial communities from a healthy individual to a patient's intestinal tract to cure some immune disorders (mainly inflammatory bowel diseases). The aim of this review was followed through the recent literature survey on immunomodulatory effects and mechanisms of probiotics and FMT and also efficacy and safety of probiotics and FMT in clinical trials and applications.
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23
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Svistunov AA, Osadchuk MA, Kireeva NV, Hudarova AA, Achkasov EE. NSAID-induced enteropathy: the current state of the problem. TERAPEVT ARKH 2019; 90:95-100. [PMID: 30701943 DOI: 10.26442/terarkh201890895-100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The review analyzes the main etiological and pathogenetic mechanisms of the development of NSAID-enteropathy. Particular attention is paid to the role of intestinal microbiota in the manifestation and progression of NSAID-enteropathy. The special role of probiotics in the prevention and treatment of NSAIDs enteropathy is considered.
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Affiliation(s)
- A A Svistunov
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia
| | - M A Osadchuk
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia
| | - N V Kireeva
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia
| | - A A Hudarova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia
| | - E E Achkasov
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia
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Tashiro H, Shore SA. Obesity and severe asthma. Allergol Int 2019; 68:135-142. [PMID: 30509734 PMCID: PMC6540088 DOI: 10.1016/j.alit.2018.10.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/26/2018] [Accepted: 10/30/2018] [Indexed: 12/11/2022] Open
Abstract
Obesity is an important global health issue for both children and adults. Obesity increases the prevalence and incidence of asthma and also increases the risk for severe asthma. Here we describe the features of severe asthma phenotypes for which obesity is a defining characteristic, including steroid resistance, airway inflammation, and co-morbidities. We also review current concepts regarding the mechanistic basis for the impact of obesity in severe asthma, including possible roles for vitamin D deficiency, systemic inflammation, and the microbiome. Finally, we describe data indicating a role for diet, weight loss, and exercise in the treatment of severe asthma with obesity. Better understanding of the mechanistic basis for the role of obesity in severe asthma could lead to new therapeutic options for this population.
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Affiliation(s)
- Hiroki Tashiro
- Department of Environmental Health, Harvard University T.H. Chan School of Public Health, Boston, MA, USA
| | - Stephanie A Shore
- Department of Environmental Health, Harvard University T.H. Chan School of Public Health, Boston, MA, USA.
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Wu CT, Lin FH, Lee YT, Ku MS, Lue KH. Effect of Lactobacillus rhamnosus GG immunopathologic changes in chronic mouse asthma model. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 52:911-919. [PMID: 30952512 DOI: 10.1016/j.jmii.2019.03.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/28/2019] [Accepted: 03/18/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Asthma is a heterogeneous inflammatory disorder of the airway. A Th2 response usually contributes to high levels of allergen-specific IgE and eosinophilic airway inflammation. Several findings have demonstrated that neutrophils, not eosinophils, are the major inflammatory cells in chronic asthma patients with steroid-resistance. Lactobacillus rhammosus GG (LGG) exhibits anti-inflammatory properties on OVA-induced acute airway inflammation. OBJECTIVE We hypothesized that orally administrated LGG should reduce airway remodeling in chronic experimental models. METHODS Female Balb/c mice were sensitized with OVA. LGG was used to investigate whether oral administrations of LGG inhibited OVA-induced airway inflammation in a chronic asthma model and the different intervention times between LGG pre-treatment and post-treatment groups. BALF was analyzed with Liu's stain and ELISA assay. Lung histopathology was assayed with HE, IHC and Masson's trichrome staining. Lung tissues were assayed with PCR (T-bet, GATA3, RORrt and Foxp3). Many cytokines were detected in the serum and BALF. RESULTS LGG significantly decreased the number of infiltrating inflammatory cells. We also found that the oral LGG group suppressed not only Th2 cytokine, but also IL-17, TNF-α and HMGB1 in the BALF levels. However, GATA3 and RORrt decreased significantly in the RNA level in the LGG groups, but the T-bet and Foxp3 increased in the RNA level. CONCLUSIONS LGG not only had anti-inflammatory effects on OVA-induced airway inflammation, but also improved airway remodeling and collagen expression in the chronic asthma mouse model. Moreover, LGG might be an additional or supplementary therapy for allergic airway diseases.
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Affiliation(s)
- Chia-Ta Wu
- Institute of Medicine, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Road, Taichung, Taiwan 402; Department of Emergency Medicine, Changhua Christian Hospital, Changhua, Taiwan.
| | - Fei-Hung Lin
- Department of Emergency Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Yu-Tzu Lee
- Institute of Medicine, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Road, Taichung, Taiwan 402
| | - Min-Sho Ku
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan.
| | - Ko-Haung Lue
- Institute of Medicine, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Road, Taichung, Taiwan 402; School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan; College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
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Fu G, Zhao K, Chen H, Wang Y, Nie L, Wei H, Wan C. Effect of 3 lactobacilli on immunoregulation and intestinal microbiota in a β-lactoglobulin–induced allergic mouse model. J Dairy Sci 2019; 102:1943-1958. [DOI: 10.3168/jds.2018-15683] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 11/26/2018] [Indexed: 12/17/2022]
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Ross KR, Teague WG, Gaston BM. Life Cycle of Childhood Asthma: Prenatal, Infancy and Preschool, Childhood, and Adolescence. Clin Chest Med 2018; 40:125-147. [PMID: 30691707 DOI: 10.1016/j.ccm.2018.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Asthma is a heterogeneous developmental disorder influenced by complex interactions between genetic susceptibility and exposures. Wheezing in infancy and early childhood is highly prevalent, with a substantial minority of children progressing to established asthma by school age, most of whom are atopic. Adolescence is a time of remission of symptoms with persistent lung function deficits. The transition to asthma in adulthood is not well understood.
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Affiliation(s)
- Kristie R Ross
- Division of Pediatric Pulmonology, Allergy, Immunology and Sleep Medicine, Case Western Reserve University School of Medicine, 11100 Euclid Avenue, Cleveland, OH 44106, USA.
| | - W Gerald Teague
- Pediatric Asthma Center of Excellence, Department of Pediatrics, University of Virginia School of Medicine, 409 Lane Road, Building MR4, Room 2112, PO Box 801349, Charlottesville, VA 22908, USA
| | - Benjamin M Gaston
- Division of Pediatric Pulmonology, Allergy, Immunology and Sleep Medicine, Rainbow Babies and Children's Hospital, Case Western Reserve University School of Medicine, Children's Lung Foundation, 2109 Adelbert Road, BRB 827, Cleveland, OH 44106, USA
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Yousefi B, Eslami M, Ghasemian A, Kokhaei P, Salek Farrokhi A, Darabi N. Probiotics importance and their immunomodulatory properties. J Cell Physiol 2018; 234:8008-8018. [DOI: 10.1002/jcp.27559] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/13/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Bahman Yousefi
- Department of Immunology Semnan University of Medical Sciences Semnan Iran
| | - Majid Eslami
- Department of Bacteriology and Virology Semnan University of Medical Sciences Semnan Iran
| | | | - Parviz Kokhaei
- Cancer Research Center, and Department of Immunology Semnan University of Medical Sciences Semnan Iran
- Immune and Gene Therapy Lab Cancer Centre Karolinska, Karolinska University Hospital Stockholm Sweden
| | | | - Narges Darabi
- Department of Bacteriology and Virology Semnan University of Medical Sciences Semnan Iran
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Spacova I, Ceuppens JL, Seys SF, Petrova MI, Lebeer S. Probiotics against airway allergy: host factors to consider. Dis Model Mech 2018; 11:11/7/dmm034314. [PMID: 30037806 PMCID: PMC6078401 DOI: 10.1242/dmm.034314] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The worldwide prevalence of allergic diseases has drastically increased in the past decades. Recent studies underline the importance of microbial exposure for the development of a balanced immune system. Consequently, probiotic bacteria are emerging as a safe and natural strategy for allergy prevention and treatment. However, clinical probiotic intervention studies have so far yielded conflicting results. There is increasing awareness about the importance of host-associated factors that determine whether an individual will respond to a specific probiotic treatment, and it is therefore crucial to promote a knowledge-based instead of an empirical selection of promising probiotic strains and their administration regimen.In this Review, we summarize the insights from animal model studies of allergic disease, which reveal how host-related factors - such as genetic makeup, sex, age and microbiological status - can impact the outcomes of preventive or curative probiotic treatment. We explore why and how these factors can influence the results of probiotic studies and negatively impact the reproducibility in animal experiments. These same factors might profoundly influence the outcomes of human clinical trials, and can potentially explain the conflicting results from probiotic intervention studies. Therefore, we also link these host-related factors to human probiotic study outcomes in the context of airway allergies.
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Affiliation(s)
- Irina Spacova
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, 2020 Antwerp, Belgium.,Centre of Microbial and Plant Genetics, Department of Microbial and Molecular Systems (M²S), KU Leuven, Belgium
| | - Jan L Ceuppens
- Laboratory of Clinical Immunology, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Sven F Seys
- Laboratory of Clinical Immunology, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Mariya I Petrova
- Centre of Microbial and Plant Genetics, Department of Microbial and Molecular Systems (M²S), KU Leuven, Belgium
| | - Sarah Lebeer
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, 2020 Antwerp, Belgium .,Centre of Microbial and Plant Genetics, Department of Microbial and Molecular Systems (M²S), KU Leuven, Belgium
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Osmotic dehydration assisted impregnation of Lactobacillus rhamnosus in banana and effect of water activity on the storage stability of probiotic in the freeze-dried product. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.02.074] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Kim J, Lee BS, Kim B, Na I, Lee J, Lee JY, Park MR, Kim H, Sohn I, Ahn K. Identification of atopic dermatitis phenotypes with good responses to probiotics (Lactobacillus plantarum CJLP133) in children. Benef Microbes 2018; 8:755-761. [PMID: 29035111 DOI: 10.3920/bm2017.0034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The therapeutic effect of probiotics in atopic dermatitis (AD) remains controversial and varies according to the individual patient. We aimed to identify a population of AD patients with a good clinical response to probiotic treatment. We recruited 76 children with a median age of 7.1 years who suffered from moderate to severe AD. After a 2-week washout period, all patients were given Lactobacillus plantarum CJLP133 at a dosage of 1×1010 colony-forming units once a day for 12 weeks. We measured eosinophil counts in the peripheral blood, the proportion of CD4+CD25+Foxp3+ regulatory T (Treg) cells in CD4+ T cells, serum total immunoglobulin E (IgE) levels, and specific IgE against common allergens before the start of the treatment (T1) and at discontinuation (T2). Responders were defined as patients with at least a 30% reduction in the SCORing of AD (SCORAD) index after treatment. There were 36 responders and 40 non-responders after probiotic treatment. The median SCORAD was reduced from 29.5 (range 20.6-46.3) at T1 to 16.4 (range 6.3-30.8) at T2 in the responder group (P<0.001). In multivariable logistic regression analysis, a good clinical response was significantly associated with high total IgE levels (aOR 5.1, 95% CI 1.1-23.6), increased expression of transforming growth factor (TGF)-β (aOR 4.6, 95% CI 1.3-15.9), and a high proportion of Treg cells in CD4+ T cells (aOR 3.7, 95% CI 1.1-12.7) at T1. In the responder group, the proportion of Treg cells was significantly increased after 12 weeks of treatment (P=0.004), while TGF-β mRNA expression was decreased (P=0.017). Our results suggest that a subgroup of patients with a specific AD phenotype showing an immunologically active state (high total IgE, increased expression of TGF-β, high numbers of Treg cells) may benefit from probiotic treatment with L. plantarum CJLP133.
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Affiliation(s)
- J Kim
- 1 Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnamgu, Seoul 06351, Republic of Korea.,2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
| | - B S Lee
- 2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
| | - B Kim
- 3 Beneficial Microbes R&D Center, CJ CheilJedang Corporation, Suwon, Republic of Korea
| | - I Na
- 2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
| | - J Lee
- 2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
| | - J Y Lee
- 1 Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnamgu, Seoul 06351, Republic of Korea.,2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
| | - M R Park
- 4 Department of Pediatrics, Sung-Ae Hospital, Seoul, Republic of Korea
| | - H Kim
- 5 Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Seoul, Republic of Korea
| | - I Sohn
- 5 Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Seoul, Republic of Korea
| | - K Ahn
- 1 Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnamgu, Seoul 06351, Republic of Korea.,2 Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Republic of Korea
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Yahfoufi N, Mallet JF, Graham E, Matar C. Role of probiotics and prebiotics in immunomodulation. Curr Opin Food Sci 2018. [DOI: 10.1016/j.cofs.2018.04.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Kim JA, Kim SH, Kim IS, Yu DY, Kim SC, Lee SH, Lee SS, Yun CH, Choi IS, Cho KK. Anti-Inflammatory Effects of a Mixture of Lactic Acid Bacteria and Sodium Butyrate in Atopic Dermatitis Murine Model. J Med Food 2018; 21:716-725. [PMID: 29648971 DOI: 10.1089/jmf.2017.4116] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Atopic dermatitis is a chronic and recurrent inflammatory skin disease. Recently, probiotics have been shown to suppress allergic symptoms through immunomodulatory responses. In the present study, combinatorial effects on allergic symptoms were identified in BALB/c mice fed with a mixture of four species of probiotics, Bifidobacterium lactis, Lactobacillus casei, Lactobacillus rhamnosus, and Lactobacillus plantarum, and sodium butyrate. Following sensitization with whey protein, the mice were challenged and divided into two groups: (1) mice administered with phosphate-buffered saline as a control and (2) mice administered with the probiotic mixture and sodium butyrate. Allergic symptoms were assessed by measuring ear thicknesses, serum histamine and IL-10 concentrations, and the quantities of leaked Evans blue. T cell differentiation was determined by analyzing the T cells groups in the mesenteric lymph nodes (MLNs) and spleen. To examine changes in the total gut microbiota, total fecal microflora was isolated, species identification was performed by DNA sequencing using Illumina MiSeq, and changes in intestinal beneficial bacteria were analyzed using quantitative polymerase chain reaction. Treatment with the probiotic mixture and sodium butyrate reduced ear thicknesses, the quantity of leaked Evans blue, and serum histamine values, while increasing serum IL-10 values. In the mouse model, the probiotic mixture and sodium butyrate increased Th1 and Treg cell differentiation in MLN and spleen tissues; the ratio of Firmicutes/Bacteroidetes, which is associated with reduction in allergic reactions; and microorganisms that lead to cell differentiation into Treg. These results suggest that the probiotic mixture and sodium butyrate can prevent and alleviate allergic symptoms.
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Affiliation(s)
- Jeong A Kim
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Sung-Hak Kim
- 2 Department of Animal Science, Chonnam National University , Gwangju, Korea
| | - In Sung Kim
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Da Yoon Yu
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Sung Chan Kim
- 3 Department of Biochemistry, Institute of Cell Differentiation and Aging, College of Medicine, Hallym University , Chuncheon, Korea
| | - Seung Ho Lee
- 4 Department of Nano-Bioengineering, Incheon National University , Incheon, Korea
| | - Sang Suk Lee
- 5 Department of Animal Science and Technology, Sunchon National University , Sunchon, Korea
| | - Cheol-Heui Yun
- 6 Department of Agricultural Biotechnology, Seoul National University , Seoul, Korea
| | - In Soon Choi
- 7 Department of Life Science, Silla University , Busan, Korea
| | - Kwang Keun Cho
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
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Li HT, Chen ZG, Liu H, Ye J, Zou XL, Wang YH, Yang HL, Meng P, Zhang TT. Treatment of allergic rhinitis with CpG oligodeoxynucleotides alleviates the lower airway outcomes of combined allergic rhinitis and asthma syndrome via a mechanism that possibly involves in TSLP. Exp Lung Res 2017; 42:322-33. [PMID: 27541375 DOI: 10.1080/01902148.2016.1215571] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
PURPOSE Thymic stromal lymphopoietin (TSLP) is a critical regulator of immune responses associated with Th2 cytokine-mediated inflammation. Intranasal administration of oligodeoxynucleotides with CpG motifs (CpG-ODNs) might improve lower airway outcomes of combined allergic rhinitis and asthma syndrome (CARAS), but the inherent mechanisms of CpG-ODNs are not well defined. This study investigated whether CpG-ODNs treated to upper airway could reduce lower airway TSLP expression as well as whether this reduction could contribute to the alleviation of lower allergic inflammation and airway hyper-reactivity (AHR) in CARAS mice. MATERIALS AND METHODS Ovalbumin (OVA)-sensitized BALB/c mice were intranasal OVA exposure three times a week for 3 weeks. CpG-ODNs or an anti-TSLP mAb was administered to a subset of these mice 1 hour after intranasal OVA challenge, followed by 5 days of OVA aerosol challenge. The resulting immunological variables, nasal symptoms, and nasal mucosa and lung tissues pathology were evaluated. TSLP production in the lung tissues and bronchoalveolar lavage fluid (BALF) were determined by RT-PCR, western blotting or enzyme-linked immunosorbent assay. RESULTS The CARAS mice exhibited overexpression of TSLP in the lung tissues and BALF, and also demonstrated significant increases in BALF and splenocyte Th2-associated cytokine production, serum OVA-specific IgE, nose and lung pathologies, and AHR. Intranasal administration of CpG-ODNs restored TSLP in the lower airway, and it significantly reduced the following parameters: Th2-type cytokine production levels; the percentage of eosinophils in the BALF; IL-4 and IL-5 concentrations in the supernatants of cultured splenic lymphocytes; serum OVA-specific IgE; peribronchial inflammation score in the lungs; and nose pathology and nasal symptoms. Similar results were obtained when the CARAS mice were treated with an anti-TSLP mAb to block intranasal TSLP activity. CONCLUSIONS Treatment with intranasal CpG-ODNs improves lower airway immunological variable outcomes in the CARAS model via a mechanism that possibly involves in suppressing pulmonary TSLP-triggered allergic inflammation.
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Affiliation(s)
- Hong-Tao Li
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Zhuang-Gui Chen
- b Department of Pediatrics , The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Hui Liu
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Jin Ye
- c Department of Otolaryngology, Head and Neck Surgery , The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Xiao-Ling Zou
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Yan-Hong Wang
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Hai-Ling Yang
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Ping Meng
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Tian-Tuo Zhang
- a Department of Pulmonary Diseases , Institute of Respiratory Diseases of Sun Yat-sen University, The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
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The role of regulatory T cells and genes involved in their differentiation in pathogenesis of selected inflammatory and neoplastic skin diseases. Part II: The Treg role in skin diseases pathogenesis. Postepy Dermatol Alergol 2017; 34:405-417. [PMID: 29507554 PMCID: PMC5835974 DOI: 10.5114/ada.2017.71105] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 01/10/2017] [Indexed: 12/22/2022] Open
Abstract
Regulatory FOXP3+ T cells (Tregs) constitute 5% to 10% of T cells in the normal human skin. They play an important role in the induction and maintenance of immunological tolerance. The suppressive effects of these cells are exerted by various mechanisms including the direct cytotoxic effect, anti-inflammatory cytokines, metabolic disruption, and modulation of the dendritic cells function. The deficiency of Treg cells number or function are one of the basic elements of the pathogenesis of many skin diseases, such as psoriasis, atopic dermatitis, bacterial and viral infections. They also play a role in the pathogenesis of T cell lymphomas of the skin (cutaneous T cell lymphomas - CTCL), skin tumors and mastocytosis. Here, in the second part of the cycle, we describe dysfunctions of Tregs in selected skin diseases.
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Llewellyn A, Foey A. Probiotic Modulation of Innate Cell Pathogen Sensing and Signaling Events. Nutrients 2017; 9:E1156. [PMID: 29065562 PMCID: PMC5691772 DOI: 10.3390/nu9101156] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/06/2017] [Accepted: 10/09/2017] [Indexed: 02/07/2023] Open
Abstract
There is a growing body of evidence documenting probiotic bacteria to have a beneficial effect to the host through their ability to modulate the mucosal immune system. Many probiotic bacteria can be considered to act as either immune activators or immune suppressors, which have appreciable influence on homeostasis, inflammatory- and suppressive-immunopathology. What is becoming apparent is the ability of these probiotics to modulate innate immune responses via direct or indirect effects on the signaling pathways that drive these activatory or suppressive/tolerogenic mechanisms. This review will focus on the immunomodulatory role of probiotics on signaling pathways in innate immune cells: from positive to negative regulation associated with innate immune cells driving gut mucosal functionality. Research investigations have shown probiotics to modulate innate functionality in many ways including, receptor antagonism, receptor expression, binding to and expression of adaptor proteins, expression of negative regulatory signal molecules, induction of micro-RNAs, endotoxin tolerisation and finally, the secretion of immunomodulatory proteins, lipids and metabolites. The detailed understanding of the immunomodulatory signaling effects of probiotic strains will facilitate strain-specific selective manipulation of innate cell signal mechanisms in the modulation of mucosal adjuvanticity, immune deviation and tolerisation in both healthy subjects and patients with inflammatory and suppressive pathology.
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Affiliation(s)
- Amy Llewellyn
- School of Biomedical & Healthcare Sciences, Plymouth University Peninsula Schools of Medicine & Dentistry, Drake Circus, Plymouth PL4 8AA, UK.
- Menzies School of Health Research, John Mathews Building (Building 58), Royal Darwin Hospital Campus, PO Box 41096, Casuarina NT0811, Australia.
| | - Andrew Foey
- School of Biomedical & Healthcare Sciences, Plymouth University Peninsula Schools of Medicine & Dentistry, Drake Circus, Plymouth PL4 8AA, UK.
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Effects of kestose on gut mucosal immunity in an atopic dermatitis mouse model. J Dermatol Sci 2017; 89:27-32. [PMID: 29111180 DOI: 10.1016/j.jdermsci.2017.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 10/02/2017] [Accepted: 10/14/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is recently increasing among populations, but the underlying mechanisms remain controversial. Interactions between the gut microbiota and mucosal immunity are considered to be a crucial etiology. Fructooligosaccharide (FOS), prebiotics have been reported as activators of the gut microbiota. OBJECTIVE The aim of this study was to investigate the effects of kestose, the smallest FOS and FOS on atopic dermatitis in mice. METHODS An AD mouse model was developed by (ovalbumin) epidermal sensitization using BALB/c mice. Kestose (1%, 5%, and 10%) or FOS (5%, positive control) was orally administered throughout the study. RESULTS In comparison with the values observed for the control AD mice, transepidermal water loss (TEWL), clinical score, and skin inflammation on histopathology were significantly decreased by the oral administration of kestose. Total IgE, thymic stromal lymphopoietin (TSLP) in skin, and IL-4 were also suppressed by this administration. In addition, the population of CD4+Foxp3+ cells in mesenteric lymph nodes (MLNs) and acetate concentrations in feces were significantly increased by kestose treatment. CONCLUSIONS These findings suggest that kestose activates the gut immune system to induce the tolerance against allergic skin inflammations in AD.
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de Vos P, Mujagic Z, de Haan BJ, Siezen RJ, Bron PA, Meijerink M, Wells JM, Masclee AAM, Boekschoten MV, Faas MM, Troost FJ. Lactobacillus plantarum Strains Can Enhance Human Mucosal and Systemic Immunity and Prevent Non-steroidal Anti-inflammatory Drug Induced Reduction in T Regulatory Cells. Front Immunol 2017; 8:1000. [PMID: 28878772 PMCID: PMC5572349 DOI: 10.3389/fimmu.2017.01000] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/04/2017] [Indexed: 12/28/2022] Open
Abstract
Orally ingested bacteria interact with intestinal mucosa and may impact immunity. However, insights in mechanisms involved are limited. In this randomized placebo-controlled cross-over trial, healthy human subjects were given Lactobacillus plantarum supplementation (strain TIFN101, CIP104448, or WCFS1) or placebo for 7 days. To determine whether L. plantarum can enhance immune response, we compared the effects of three stains on systemic and gut mucosal immunity, by among others assessing memory responses against tetanus toxoid (TT)-antigen, and mucosal gene transcription, in human volunteers during induction of mild immune stressor in the intestine, by giving a commonly used enteropathic drug, indomethacin [non-steroidal anti-inflammatory drug (NSAID)]. Systemic effects of the interventions were studies in peripheral blood samples. NSAID was found to induce a reduction in serum CD4+/Foxp3 regulatory cells, which was prevented by L. plantarum TIFN101. T-cell polarization experiments showed L. plantarum TIFN101 to enhance responses against TT-antigen, which indicates stimulation of memory responses by this strain. Cell extracts of the specific L. plantarum strains provoked responses after WCFS1 and TIFN101 consumption, indicating stimulation of immune responses against the specific bacteria. Mucosal immunomodulatory effects were studied in duodenal biopsies. In small intestinal mucosa, TIFN101 upregulated genes associated with maintenance of T- and B-cell function and antigen presentation. Furthermore, L. plantarum TIFN101 and WCFS1 downregulated immunological pathways involved in antigen presentation and shared downregulation of snoRNAs, which may suggest cellular destabilization, but may also be an indicator of tissue repair. Full sequencing of the L. plantarum strains revealed possible gene clusters that might be responsible for the differential biological effects of the bacteria on host immunity. In conclusion, the impact of oral consumption L. plantarum on host immunity is strain dependent and involves responses against bacterial cell components. Some strains may enhance specific responses against pathogens by enhancing antigen presentation and leukocyte maintenance in mucosa. In future studies and clinical settings, caution should be taken in selecting beneficial bacteria as closely related strains can have different effects. Our data show that specific bacterial strains can prevent immune stress induced by commonly consumed painkillers such as NSAID and can have enhancing beneficial effects on immunity of consumers by stimulating antigen presentation and memory responses.
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Affiliation(s)
- Paul de Vos
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Zlatan Mujagic
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| | - Bart J de Haan
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Roland J Siezen
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Nijmegen, Netherlands.,Microbial Bioinformatics, Ede, Netherlands
| | - Peter A Bron
- Top Institute Food and Nutrition, Wageningen, Netherlands.,NIZO Food Research, Ede, Netherlands
| | - Marjolein Meijerink
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Host-Microbe Interactomics, Wageningen University, Wageningen, Netherlands
| | - Jerry M Wells
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Host-Microbe Interactomics, Wageningen University, Wageningen, Netherlands
| | - Ad A M Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| | - Mark V Boekschoten
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Human Nutrition, Wageningen University, Wageningen, Netherlands
| | - Marijke M Faas
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Freddy J Troost
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
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40
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Thermoneutral housing temperature regulates T-regulatory cell function and inhibits ovabumin-induced asthma development in mice. Sci Rep 2017; 7:7123. [PMID: 28769099 PMCID: PMC5540912 DOI: 10.1038/s41598-017-07471-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 06/27/2017] [Indexed: 12/12/2022] Open
Abstract
The change in ambient temperature is one of the risk factors for the aggravation of bronchial asthma (BA). Yet, whether the ambient temperature influences the immune functions associated with allergic asthma remains unknown. In this study, we treated asthmatic mice with standard temperature (ST, 20 °C) or thermoneutral temperature (TT, 30 °C). The results showed that the airway inflammatory cell counts in bronchoalveolar lavage fluid (BALF) and airway hyperresponsiveness (AHR) were significantly reduced in the mice treated with TT as compared with the mice treated with ST. The imbalance of Th1/Th2 response in the lung was improved following housing the mice at TT. In addition, the pulmonary Treg cells were increased in asthmatic mice after TT treatment. The temperature stress (29 °C and 41 °C) drove naïve CD4T cells towards Th2 cells. Our data demonstrate that the change of ambient temperature was a risk factor to aggravate experimental asthma.
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41
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Wu S, Yang R, Wang G. Anti-asthmatic effect of pitavastatin through aerosol inhalation is associated with CD4+ CD25+ Foxp3+ T cells in an asthma mouse model. Sci Rep 2017; 7:6084. [PMID: 28729731 PMCID: PMC5519711 DOI: 10.1038/s41598-017-06476-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 06/14/2017] [Indexed: 12/13/2022] Open
Abstract
Statins are competitive inhibitors of 3-hydroxy-3-methylglutaryl-CoA (HMG-A) reductase, and studies have shown that statins also have anti-inflammatory and immunomodulatory properties. The purpose of this study was to investigate the anti-asthmatic effects of pitavastatin, a type of statin, in an asthma mouse model. Mice were sensitized and challenged with ovalbumin (OVA) to establish the asthma model. These mice were then treated with inhaled pitavastatin (5 mg/kg) or dexamethasone (2 mg/kg), the latter of which served as a positive control. The results of the study showed that pitavastatin reduced allergen-induced increases in airway resistance and alleviated bronchial tube thickness and goblet cell hyperplasia in lung tissues. In addition, the results showed that pitavastatin inhibited OVA-induced increases in eosinophil counts and total inflammatory cell counts in bronchoalveolar lavage fluid (BALF) and increased the percentage of CD4+ CD25+ Foxp3+ Treg in the BALF of asthmatic mice. IL-4 and IL-17 levels were decreased, whereas IFN-γ levels were significantly increased in the BALF of pitavastatin-treated mice compared with the BALF of OVA-challenged mice. These results suggest that pitavastatin has potential as a therapy for allergic airway disease and that its effects are associated with its ability to regulate CD4+ CD25+ Foxp3+ T cell counts.
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Affiliation(s)
- Songquan Wu
- College of Medicine and Health, Lishui University, 1 Xueyuan Road, Lishui, 323000, Zhejiang Province, P.R. China
| | - Ruhui Yang
- College of Medicine and Health, Lishui University, 1 Xueyuan Road, Lishui, 323000, Zhejiang Province, P.R. China.
| | - Guangli Wang
- College of Medicine and Health, Lishui University, 1 Xueyuan Road, Lishui, 323000, Zhejiang Province, P.R. China
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42
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Deckers J, De Bosscher K, Lambrecht BN, Hammad H. Interplay between barrier epithelial cells and dendritic cells in allergic sensitization through the lung and the skin. Immunol Rev 2017; 278:131-144. [DOI: 10.1111/imr.12542] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Julie Deckers
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
- Department of Biochemistry; Ghent University; Ghent Belgium
- Receptor Research Laboratories; Nuclear Receptor Lab; VIB Center for Medical Biotechnology; Ghent Belgium
| | - Karolien De Bosscher
- Department of Biochemistry; Ghent University; Ghent Belgium
- Receptor Research Laboratories; Nuclear Receptor Lab; VIB Center for Medical Biotechnology; Ghent Belgium
| | - Bart N Lambrecht
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
- Department of Pulmonary Medicine; Erasmus University Medical Center; Rotterdam The Netherlands
| | - Hamida Hammad
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
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43
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Ding YH, Qian LY, Pang J, Lin JY, Xu Q, Wang LH, Huang DS, Zou H. The regulation of immune cells by Lactobacilli: a potential therapeutic target for anti-atherosclerosis therapy. Oncotarget 2017; 8:59915-59928. [PMID: 28938693 PMCID: PMC5601789 DOI: 10.18632/oncotarget.18346] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/22/2017] [Indexed: 12/30/2022] Open
Abstract
Atherosclerosis is an inflammatory disease regulated by several immune cells including lymphocytes, macrophages and dendritic cells. Gut probiotic bacteria like Lactobacilli have been shown immunomodificatory effects in the progression of atherogenesis. Some Lactobacillus stains can upregulate the activity of regulatory T-lymphocytes, suppress T-lymphocyte helper (Th) cells Th1, Th17, alter the Th1/Th2 ratio, influence the subsets ratio of M1/M2 macrophages, inhibit foam cell formation by suppressing macrophage phagocytosis of oxidized low-density lipoprotein, block the activation of the immune system with dendritic cells, which are expected to suppress the atherosclerosis-related inflammation. However, various strains can have various effects on inflammation. Some other Lactobacillus strains were found have potential pro-atherogenic effect through promote Th1 cell activity, increase pro-inflammatory cytokines levels as well as decrease anti-inflammatory cytokines levels. Thus, identifying the appropriate strains is essential to the therapeutic potential of Lactobacilli as an anti-atherosclerotic therapy.
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Affiliation(s)
- Ya-Hui Ding
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Lin-Yan Qian
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Jie Pang
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Jing-Yang Lin
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Qiang Xu
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Li-Hong Wang
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Dong-Sheng Huang
- People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Department of Hepatobiliary Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310000, China
| | - Hai Zou
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Chinaa.,People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
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44
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Dennis-Wall JC, Culpepper T, Nieves C, Rowe CC, Burns AM, Rusch CT, Federico A, Ukhanova M, Waugh S, Mai V, Christman MC, Langkamp-Henken B. Probiotics ( Lactobacillus gasseri KS-13, Bifidobacterium bifidum G9-1, and Bifidobacterium longum MM-2) improve rhinoconjunctivitis-specific quality of life in individuals with seasonal allergies: a double-blind, placebo-controlled, randomized trial. Am J Clin Nutr 2017; 105:758-767. [PMID: 28228426 DOI: 10.3945/ajcn.116.140012] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 12/20/2016] [Indexed: 11/14/2022] Open
Abstract
Background: Rhinoconjunctivitis-specific quality of life is often reduced during seasonal allergies. The Mini Rhinoconjunctivitis Quality of Life Questionnaire (MRQLQ) is a validated tool used to measure quality of life in people experiencing allergies (0 = not troubled to 6 = extremely troubled). Probiotics may improve quality of life during allergy season by increasing the percentage of regulatory T cells (Tregs) and inducing tolerance.Objective: The objective of this study was to determine whether consuming Lactobacillus gasseri KS-13, Bifidobacterium bifidum G9-1, and B. longum MM-2 compared with placebo would result in beneficial effects on MRQLQ scores throughout allergy season in individuals who typically experience seasonal allergies. Secondary outcomes included changes in immune markers as part of a potential mechanism for changes in MRQLQ scores.Design: In this double-blind, placebo-controlled, parallel, randomized clinical trial, 173 participants (mean ± SEM: age 27 ± 1 y) who self-identified as having seasonal allergies received either a probiotic (2 capsules/d, 1.5 billion colony-forming units/capsule) or placebo during spring allergy season for 8 wk. MRQLQ scores were collected weekly throughout the study. Fasting blood samples were taken from a subgroup (placebo, n = 37; probiotic, n = 35) at baseline and week 6 (predicted peak of pollen) to determine serum immunoglobulin (Ig) E concentrations and Treg percentages.Results: The probiotic group reported an improvement in the MRQLQ global score from baseline to pollen peak (-0.68 ± 0.13) when compared with the placebo group (-0.19 ± 0.14; P = 0.0092). Both serum total IgE and the percentage of Tregs increased from baseline to week 6, but changes were not different between groups.Conclusions: This combination probiotic improved rhinoconjunctivitis-specific quality of life during allergy season for healthy individuals with self-reported seasonal allergies; however, the associated mechanism is still unclear. This trial was registered at clinicaltrials.gov as NCT02349711.
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Affiliation(s)
| | | | | | | | | | | | | | - Maria Ukhanova
- Emerging Pathogens Institute, University of Florida, Gainesville, FL; and
| | - Sheldon Waugh
- Emerging Pathogens Institute, University of Florida, Gainesville, FL; and
| | - Volker Mai
- Emerging Pathogens Institute, University of Florida, Gainesville, FL; and
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45
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Smolinska S, Groeger D, O'Mahony L. Biology of the Microbiome 1: Interactions with the Host Immune Response. Gastroenterol Clin North Am 2017; 46:19-35. [PMID: 28164850 DOI: 10.1016/j.gtc.2016.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The intestinal immune system is intimately connected with the vast diversity of microbes present within the gut and the diversity of food components that are consumed daily. The discovery of novel molecular mechanisms, which mediate host-microbe-nutrient communication, have highlighted the important roles played by microbes and dietary factors in influencing mucosal immune responses. Dendritic cells, epithelial cells, innate lymphoid cells, T regulatory cells, effector lymphocytes, natural killer T cells, and B cells can all be influenced by the microbiome. Many of the mechanisms being described are bacterial strain or metabolite specific.
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Affiliation(s)
- Sylwia Smolinska
- Department of Clinical Immunology, Wroclaw Medical University, Chalubinskiego 5, Wroclaw 50-368, Poland
| | - David Groeger
- Alimentary Health Pharma Davos, Obere Strasse 22, Davos Platz 7270, Switzerland
| | - Liam O'Mahony
- Molecular Immunology, Swiss Institute of Allergy and Asthma Research, University of Zurich, Obere Strasse 22, Davos Platz 7270, Switzerland.
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46
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Wang X, Hui Y, Zhao L, Hao Y, Guo H, Ren F. Oral administration of Lactobacillus paracasei L9 attenuates PM2.5-induced enhancement of airway hyperresponsiveness and allergic airway response in murine model of asthma. PLoS One 2017; 12:e0171721. [PMID: 28199353 PMCID: PMC5310903 DOI: 10.1371/journal.pone.0171721 10.1371/journal.pone.0171721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
This study investigated allergy immunotherapy potential of Lactobacillus paracasei L9 to prevent or mitigate the particulate matter 2.5 (PM2.5) enhanced pre-existing asthma in mice. Firstly, we used a mouse model of asthma (a 21-day ovalbumin (OVA) sensitization and challenge model) followed by PM2.5 exposure twice on the same day of the last challenge. PM2.5 was collected from the urban area of Beijing and underwent analysis for metals and polycyclic aromatic hydrocarbon contents. The results showed that PM2.5 exposure enhanced airway hyper-responsiveness (AHR) and lead to a mixed Th2/ IL-17 response in asthmatic mice. Secondly, the PM2.5 exposed asthmatic mice were orally administered with L9 (4×107, 4×109 CFU/mouse, day) from the day of first sensitization to the endpoint, for 20 days, to investigate the potential mitigative effect of L9 on asthma. The results showed that L9 ameliorated PM2.5 exposure enhanced AHR with an approximate 50% decrease in total airway resistance response to methacholine (48 mg/ml). L9 also prevented the exacerbated eosinophil and neutrophil infiltration in bronchoalveolar lavage fluid (BALF), and decreased the serum level of total IgE and OVA-specific IgG1 by 0.44-fold and 0.3-fold, respectively. Additionally, cytokine production showed that L9 significantly decreased T-helper cell type 2 (Th2)-related cytokines (IL-4, -5, -13) and elevated levels of Th1 related IFN-γ in BALF. L9 also reduced the level of IL-17A and increased the level of TGF-β. Taken together, these results indicate that L9 may exert the anti-allergic benefit, possibly through rebalancing Th1/Th2 immune response and modulating IL-17 pro-inflammatory immune response. Thus, L9 is a promising candidate for preventing PM exposure enhanced pre-existing asthma.
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Affiliation(s)
- Xifan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yan Hui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Liang Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yanling Hao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Huiyuan Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
- * E-mail:
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47
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Wang X, Hui Y, Zhao L, Hao Y, Guo H, Ren F. Oral administration of Lactobacillus paracasei L9 attenuates PM2.5-induced enhancement of airway hyperresponsiveness and allergic airway response in murine model of asthma. PLoS One 2017; 12:e0171721. [PMID: 28199353 PMCID: PMC5310903 DOI: 10.1371/journal.pone.0171721] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/23/2017] [Indexed: 11/22/2022] Open
Abstract
This study investigated allergy immunotherapy potential of Lactobacillus paracasei L9 to prevent or mitigate the particulate matter 2.5 (PM2.5) enhanced pre-existing asthma in mice. Firstly, we used a mouse model of asthma (a 21-day ovalbumin (OVA) sensitization and challenge model) followed by PM2.5 exposure twice on the same day of the last challenge. PM2.5 was collected from the urban area of Beijing and underwent analysis for metals and polycyclic aromatic hydrocarbon contents. The results showed that PM2.5 exposure enhanced airway hyper-responsiveness (AHR) and lead to a mixed Th2/ IL-17 response in asthmatic mice. Secondly, the PM2.5 exposed asthmatic mice were orally administered with L9 (4×107, 4×109 CFU/mouse, day) from the day of first sensitization to the endpoint, for 20 days, to investigate the potential mitigative effect of L9 on asthma. The results showed that L9 ameliorated PM2.5 exposure enhanced AHR with an approximate 50% decrease in total airway resistance response to methacholine (48 mg/ml). L9 also prevented the exacerbated eosinophil and neutrophil infiltration in bronchoalveolar lavage fluid (BALF), and decreased the serum level of total IgE and OVA-specific IgG1 by 0.44-fold and 0.3-fold, respectively. Additionally, cytokine production showed that L9 significantly decreased T-helper cell type 2 (Th2)-related cytokines (IL-4, -5, -13) and elevated levels of Th1 related IFN-γ in BALF. L9 also reduced the level of IL-17A and increased the level of TGF-β. Taken together, these results indicate that L9 may exert the anti-allergic benefit, possibly through rebalancing Th1/Th2 immune response and modulating IL-17 pro-inflammatory immune response. Thus, L9 is a promising candidate for preventing PM exposure enhanced pre-existing asthma.
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Affiliation(s)
- Xifan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yan Hui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Liang Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yanling Hao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Huiyuan Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
- Key Laboratory of Functional Dairy, Co-constructed by ministry of Education and Beijing Government, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
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48
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Luongo D, Coppola A, Treppiccione L, Bergamo P, Sorrentino A, Ferrocino I, Turroni S, Neviani E, Di Cagno R, Cocolin L, Rossi M. Modulation of the cytokine profile in Caco-2 cells by faecal lactobacilli and bifidobacteria from individuals with distinct dietary habits. Cytokine 2017; 90:80-87. [DOI: 10.1016/j.cyto.2016.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 10/16/2016] [Accepted: 11/10/2016] [Indexed: 12/18/2022]
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49
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Holvoet S, Doucet-Ladevèze R, Perrot M, Barretto C, Nutten S, Blanchard C. Beneficial effect of Lactococcus lactis NCC 2287 in a murine model of eosinophilic esophagitis. Allergy 2016; 71:1753-1761. [PMID: 27259693 DOI: 10.1111/all.12951] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Eosinophilic esophagitis (EoE) is a severe inflammatory disease of the esophagus which is characterized histologically by an eosinophilic infiltration into the esophageal tissue. The efficacy of probiotics in the context of atopic diseases has been well investigated but, to date, there has been no study which has evaluated probiotic effects on EoE inflammation. This study sought to identify a probiotic which improves esophageal inflammation in experimental EoE. METHODS Two candidate probiotics, Lactococcus lactis NCC 2287 and Bifidobacterium lactis NCC 2818, were tested in a murine model of EoE elicited by epicutaneous sensitization with Aspergillus fumigatus protein extract. Administration of bacterial strains in drinking water was used, respectively, as a preventive or treatment measure, or continuously throughout the study. Inflammatory parameters were assessed in the esophagus, skin, and lungs after allergen challenge. RESULTS In this EoE model, supplementation with L. lactis NCC 2287 significantly decreased esophageal and bronchoalveolar eosinophilia but only when given as a therapeutic treatment. No significant effect on eosinophilia was observed when NCC 2287 was given as a preventive or a continuous intervention. NCC 2287 supplementation had no significant effect on immunoglobulin levels, skin symptom scores, or on transepidermal water loss. Supplementation with another probiotic, B. lactis NCC 2818, had no significant effect on esophageal eosinophilia. CONCLUSION We identified a L. lactis strain, able to attenuate esophageal eosinophilic inflammation in a preclinical model of EoE. This effect is strain specific and depends on the timing and duration of bacterial supplementation. Confirmation of these observations in human clinical trials is warranted.
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Affiliation(s)
- S. Holvoet
- Nutrition and Health Research; Allergy Group; Nestle Research Center; Lausanne Switzerland
| | - R. Doucet-Ladevèze
- Nutrition and Health Research; Allergy Group; Nestle Research Center; Lausanne Switzerland
| | - M. Perrot
- Data Science Group; Nestle Research Center; Lausanne Switzerland
| | - C. Barretto
- Data Science Group; Nestle Research Center; Lausanne Switzerland
| | - S. Nutten
- Nutrition and Health Research; Allergy Group; Nestle Research Center; Lausanne Switzerland
| | - C. Blanchard
- Nutrition and Health Research; Allergy Group; Nestle Research Center; Lausanne Switzerland
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50
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Svirshchevskaya E, Fattakhova G, Khlgatian S, Chudakov D, Kashirina E, Ryazantsev D, Kotsareva O, Zavriev S. Direct versus sequential immunoglobulin switch in allergy and antiviral responses. Clin Immunol 2016; 170:31-8. [PMID: 27471213 DOI: 10.1016/j.clim.2016.07.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 01/03/2023]
Abstract
Allergy is characterized by IgE production to innocuous antigens. The question whether the switch to IgE synthesis occurs via direct or sequential pathways is still unresolved. The aim of this work was to analyze the distribution of immunoglobulins (Ig) to house dust mite D. farinae and A. alternata fungus in allergic children with primarily established diagnosis and compare it to Epstein-Barr antiviral (EBV) response in the same patients. In allergy patients the only significant difference was found in allergen specific IgE, likely mediated by a direct isotype switch, while antiviral response was dominated by EBV specific IgG and low level of concordant IgA and IgG4 production consistent with a minor sequential Ig switches. Taken collectively, we concluded that sequential isotype switch is likely to be a much rarer event than a direct one.
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Affiliation(s)
- E Svirshchevskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - G Fattakhova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - S Khlgatian
- Mechnikov's Institute of Vaccines and Sera, Russian Academy of Medical Sciences, Maliy Kazenny pereulok, 5A, 105064 Moscow, Russian Federation.
| | - D Chudakov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - E Kashirina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - D Ryazantsev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - O Kotsareva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
| | - S Zavriev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., GSP-7, 117997 Moscow, Russian Federation.
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