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Mir TM, Shamim K, Zhang J, Khan SI, Tripathi SK, Khan IA, Marshall GD, Ashfaq MK, Pugh ND. Immulina® mitigates the development of illness when administered during the prodromal period of influenza viral infection in mice (Part 2). PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 132:155778. [PMID: 38876006 PMCID: PMC11335448 DOI: 10.1016/j.phymed.2024.155778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/14/2024] [Accepted: 05/24/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Immulina®, a dietary supplement derived from Limnospira (formerly Arthrospira), is being investigated as a potential agent to increase antiviral resilience. In our recently published manuscript, we described the effects of Immulina® on influenza when taken daily, beginning before infection (prophylaxis) or after the onset of clinical symptoms of viral illness (therapeutic). However, the benefit of Immulina® in infected individuals before the manifestation of any symptoms (prodromal) has not been investigated yet. PURPOSE To evaluate Immulina®'s potential use to increase the host antiviral immune response using a prodromal therapy regime. STUDY DESIGN The efficacy of Immulina® extract was evaluated in rodents using a prodromal protocol (test material administered prior to the emergence of viral illness symptoms). METHODS Immulina® (25, 50 and 100 mg/kg body weight) was orally administered to both genders of mice, 2 h following influenza A viral infection, and continued daily for 14 days. RESULTS Compared to the infected control mice, animals fed Immulina® exhibited statistically significant reduction in the emergence of various physical symptoms of viral-induced illness and decreased viral RNA levels. The effects are likely mediated through the host immune system since the level of various cytokines (IL-6 and IFN-γ) were significantly increased in lung tissue. CONCLUSION This study, together with our previous paper, indicate that Immulina® was most effective at enhancing immune antiviral resilience if administered before or soon after initial infection. The data generated can be used to guide additional research using human subjects.
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Affiliation(s)
- Tahir M. Mir
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Kashif Shamim
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Shabana I. Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Siddharth K. Tripathi
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Ikhlas A. Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Gailen D. Marshall
- Department of Medicine, University of Mississippi Medical Center, Jackson MS 39216, USA
| | - Mohammad K. Ashfaq
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
| | - Nirmal D. Pugh
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University MS 38677, USA
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Tejeda-Garibay S, Zhao L, Hum NR, Pimentel M, Diep AL, Amiri B, Sindi SS, Weilhammer DR, Loots GG, Hoyer KK. Host tracheal and intestinal microbiomes inhibit Coccidioides growth in vitro. Microbiol Spectr 2024; 12:e0297823. [PMID: 38832766 PMCID: PMC11218535 DOI: 10.1128/spectrum.02978-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 03/19/2024] [Indexed: 06/05/2024] Open
Abstract
Coccidioidomycosis, also known as Valley fever, is a disease caused by the fungal pathogen Coccidioides. Unfortunately, patients are often misdiagnosed with bacterial pneumonia, leading to inappropriate antibiotic treatment. The soil Bacillus subtilis-like species exhibits antagonistic properties against Coccidioides in vitro; however, the antagonistic capabilities of host microbiota against Coccidioides are unexplored. We sought to examine the potential of the tracheal and intestinal microbiomes to inhibit the growth of Coccidioides in vitro. We hypothesized that an uninterrupted lawn of microbiota obtained from antibiotic-free mice would inhibit the growth of Coccidioides, while partial in vitro depletion through antibiotic disk diffusion assays would allow a niche for fungal growth. We observed that the microbiota grown on 2×GYE (GYE) and Columbia colistin and nalidixic acid with 5% sheep's blood agar inhibited the growth of Coccidioides, but microbiota grown on chocolate agar did not. Partial depletion of the microbiota through antibiotic disk diffusion revealed diminished inhibition and comparable growth of Coccidioides to controls. To characterize the bacteria grown and identify potential candidates contributing to the inhibition of Coccidioides, 16S rRNA sequencing was performed on tracheal and intestinal agar cultures and murine lung extracts. We found that the host bacteria likely responsible for this inhibition primarily included Lactobacillus and Staphylococcus. The results of this study demonstrate the potential of the host microbiota to inhibit the growth of Coccidioides in vitro and suggest that an altered microbiome through antibiotic treatment could negatively impact effective fungal clearance and allow a niche for fungal growth in vivo. IMPORTANCE Coccidioidomycosis is caused by a fungal pathogen that invades the host lungs, causing respiratory distress. In 2019, 20,003 cases of Valley fever were reported to the CDC. However, this number likely vastly underrepresents the true number of Valley fever cases, as many go undetected due to poor testing strategies and a lack of diagnostic models. Valley fever is also often misdiagnosed as bacterial pneumonia, resulting in 60%-80% of patients being treated with antibiotics prior to an accurate diagnosis. Misdiagnosis contributes to a growing problem of antibiotic resistance and antibiotic-induced microbiome dysbiosis; the implications for disease outcomes are currently unknown. About 5%-10% of symptomatic Valley fever patients develop chronic pulmonary disease. Valley fever causes a significant financial burden and a reduced quality of life. Little is known regarding what factors contribute to the development of chronic infections and treatments for the disease are limited.
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Affiliation(s)
- Susana Tejeda-Garibay
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Lihong Zhao
- Department of Applied Mathematics, University of California, Merced, Merced, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
| | - Nicholas R. Hum
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Maria Pimentel
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, California, USA
| | - Anh L. Diep
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
| | - Beheshta Amiri
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Suzanne S. Sindi
- Department of Applied Mathematics, University of California, Merced, Merced, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
| | - Dina R. Weilhammer
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Gabriela G. Loots
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
- />Department of Orthopaedic Surgery, Lawrence J. Ellison Musculoskeletal Research Center, University of California Davis Health, Sacramento, California, USA
| | - Katrina K. Hoyer
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, California, USA
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Choi D, Jang SJ, Choi S, Park S, Kim WK, Lee G, Lee C, Ko G. Oral Administration of Limosilactobacillus reuteri KBL346 Ameliorates Influenza Virus A/PR8 Infection in Mouse. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10301-8. [PMID: 38949757 DOI: 10.1007/s12602-024-10301-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2024] [Indexed: 07/02/2024]
Abstract
Influenza virus infection is an important public-health concern because of its high transmissibility and potential for severe complications. To mitigate the severity and complications of influenza, probiotics containing Lactobacillus are used and generally recognized as safe. We evaluated the anti-influenza effect of Limosilactobacillus reuteri (L. reuteri) KBL346, isolated from the fecel sample of healthy South Koreans, in mice. BALB/c mice were orally administered live and heat-inactivated L. reuteri KBL346. After infection with influenza virus (A/Puerto Rico/8/34) 0.5 times the 50% lethal dose (LD50), body weight loss was improved and recovery was accelerated. Furthermore, L. reuteri KBL346 improved body weight loss and survival rate of mice infected with 4 times the LD50 of influenza virus. Heat-inactivated L. reuteri KBL346 reduced the viral titer in the lung and the plasma immunoglobulin G level. Expression levels of genes encoding inflammatory cytokines, such as interferon-γ and toll-like receptor 2 (Tlr2), were decreased in the lung tissues of mice administered L. reuteri KBL346. Live and heat-inactivated L. reuteri KBL346 increased the expression level of Adamts4, which promotes recovery after infection, and decreased that of Tlr2. The α-diversity of the gut microbiome was modulated by the administration of L. reuteri KBL346. In addition, the structure of the gut microbial community differed according to the degree of weight loss. L. reuteri KBL346 has the potential to alleviate disease severity and improve histopathological changes in mice infected with influenza A/PR8, suggesting its efficacy as a probiotic against influenza infection.
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Affiliation(s)
- Doseon Choi
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Sung Jae Jang
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
- KoBioLabs, Inc, Seoul, Republic of Korea
| | - Sueun Choi
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - SungJun Park
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
- KoBioLabs, Inc, Seoul, Republic of Korea
- N-Bio, Seoul National University, Seoul, Republic of Korea
| | - Woon-Ki Kim
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea
| | - Giljae Lee
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea
| | - Cheonghoon Lee
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea.
- Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, OH, USA.
| | - GwangPyo Ko
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.
- KoBioLabs, Inc, Seoul, Republic of Korea.
- N-Bio, Seoul National University, Seoul, Republic of Korea.
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea.
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4
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Boncheva I, Poudrier J, Falcone EL. Role of the intestinal microbiota in host defense against respiratory viral infections. Curr Opin Virol 2024; 66:101410. [PMID: 38718575 DOI: 10.1016/j.coviro.2024.101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 06/07/2024]
Abstract
Viral infections, including those affecting the respiratory tract, can alter the composition of the intestinal microbiota, which, in turn, can significantly influence both innate and adaptive immune responses, resulting in either enhanced pathogen clearance or exacerbation of the infection, possibly leading to inflammatory complications. A deeper understanding of the interplay between the intestinal microbiota and host immune responses in the context of respiratory viral infections (i.e. the gut-lung axis) is necessary to develop new treatments. This review highlights key mechanisms by which the intestinal microbiota, including its metabolites, can act locally or at distant organs to combat respiratory viruses. Therapeutics aimed at harnessing the microbiota to prevent and/or help treat respiratory viral infections represent a promising avenue for future investigation.
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Affiliation(s)
- Idia Boncheva
- Center for Immunity, Inflammation and Infectious Diseases, Montreal Clinical Research Institute/Institut de recherches cliniques de Montréal (IRCM), Montreal, QC, Canada
| | - Johanne Poudrier
- Center for Immunity, Inflammation and Infectious Diseases, Montreal Clinical Research Institute/Institut de recherches cliniques de Montréal (IRCM), Montreal, QC, Canada; Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada
| | - Emilia L Falcone
- Center for Immunity, Inflammation and Infectious Diseases, Montreal Clinical Research Institute/Institut de recherches cliniques de Montréal (IRCM), Montreal, QC, Canada; Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada; Department of Medicine, Université de Montréal, Montreal, QC, Canada; Department of Microbiology and Infectious Diseases, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada.
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5
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Lee HJ, Tran MTH, Le MH, Justine EE, Kim YJ. Paraprobiotic derived from Bacillus velezensis GV1 improves immune response and gut microbiota composition in cyclophosphamide-treated immunosuppressed mice. Front Immunol 2024; 15:1285063. [PMID: 38455053 PMCID: PMC10918466 DOI: 10.3389/fimmu.2024.1285063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/12/2024] [Indexed: 03/09/2024] Open
Abstract
Paraprobiotics that benefit human health have the capacity to modulate innate and adaptive immune systems. In this study, we prepared the paraprobiotic from Bacillus velezensis GV1 using the heat-killing method and investigated its effects on immunity and gut microbiota in vitro and in vivo. The morphology of inactivated strain GV1 was observed using scanning electron microscopy. Treatment with GV1 promoted nitric oxide production and augmented cytokine (IL-6, IL-1β, and TNF-α) expression and secretion in RAW 264.7 macrophages. Moreover, the strain GV1 could alleviate cyclophosphamide monohydrate (CTX)-induced immunosuppression by reversing spleen damage and restoring the immune organ index, as well as by increasing the expression of immune-related cytokines (TNF-α, IL-1β, IFN-γ, and IL-2) in the spleen and thymus, respectively. Furthermore, GV1 treatment dramatically healed the CTX-damaged colon and regulated gut microbiota by increasing the relative abundance of beneficial bacterial families (Lactobacillaceae, Akkermansiaceae, and Coriobacteriaceae) and decreasing that of harmful bacterial families (Desulfovibrionaceae, Erysipelotrichaceae, and Staphylococcaceae). Thus, the heat-killed GV1 can be considered a potential immunoregulatory agent for use as a functional food or immune-enhancing medicine.
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Affiliation(s)
| | | | | | | | - Yeon-Ju Kim
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
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6
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Tejeda-Garibay S, Zhao L, Hum NR, Pimentel M, Diep AL, Amiri B, Sindi SS, Weilhammer DR, Loots GG, Hoyer KK. Host tracheal and intestinal microbiomes inhibit Coccidioides growth in vitro. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.23.563655. [PMID: 37961490 PMCID: PMC10634762 DOI: 10.1101/2023.10.23.563655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Coccidioidomycosis, also known as Valley fever, is a disease caused by the fungal pathogen Coccidioides. Unfortunately, patients are often misdiagnosed with bacterial pneumonia leading to inappropriate antibiotic treatment. Soil bacteria B. subtilis-like species exhibits antagonistic properties against Coccidioides in vitro; however, the antagonistic capabilities of host microbiota against Coccidioides are unexplored. We sought to examine the potential of the tracheal and intestinal microbiomes to inhibit the growth of Coccidioides in vitro. We hypothesized that an uninterrupted lawn of microbiota obtained from antibiotic-free mice would inhibit the growth of Coccidioides while partial in vitro depletion through antibiotic disk diffusion assays would allow a niche for fungal growth. We observed that the microbiota grown on 2xGYE (GYE) and CNA w/ 5% sheep's blood agar (5%SB-CNA) inhibited the growth of Coccidioides, but that grown on chocolate agar does not. Partial depletion of the microbiota through antibiotic disk diffusion revealed that microbiota depletion leads to diminished inhibition and comparable growth of Coccidioides growth to controls. To characterize the bacteria grown and narrow down potential candidates contributing to the inhibition of Coccidioides, 16s rRNA sequencing of tracheal and intestinal agar cultures and murine lung extracts was performed. The identity of host bacteria that may be responsible for this inhibition was revealed. The results of this study demonstrate the potential of the host microbiota to inhibit the growth of Coccidioides in vitro and suggest that an altered microbiome through antibiotic treatment could negatively impact effective fungal clearance and allow a niche for fungal growth in vivo.
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Affiliation(s)
- Susana Tejeda-Garibay
- Quantitative and Systems Biology, Graduate Program, University of California Merced, CA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
| | - Lihong Zhao
- Department of Applied Mathematics, University of California, Merced, CA
- Health Sciences Research Institute, University of California Merced, Merced, CA
| | - Nicholas R Hum
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
| | - Maria Pimentel
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, CA
| | - Anh L Diep
- Quantitative and Systems Biology, Graduate Program, University of California Merced, CA
| | - Beheshta Amiri
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
| | - Suzanne S Sindi
- Department of Applied Mathematics, University of California, Merced, CA
- Health Sciences Research Institute, University of California Merced, Merced, CA
| | - Dina R Weilhammer
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
| | - Gabriela G Loots
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
- University of California Davis Health, Department of Orthopaedic Surgery, Lawrence J. Ellison Musculo-skeletal Research Center, 2700 Stockton Blvd, Sacramento, CA 95817, CA
| | - Katrina K Hoyer
- Quantitative and Systems Biology, Graduate Program, University of California Merced, CA
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, CA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore CA
- Health Sciences Research Institute, University of California Merced, Merced, CA
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Harnessing Innate Immunity to Treat Mycobacterium tuberculosis Infections: Heat-Killed Caulobacter crescentus as a Novel Biotherapeutic. Cells 2023; 12:cells12040560. [PMID: 36831226 PMCID: PMC9954702 DOI: 10.3390/cells12040560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/29/2023] [Accepted: 02/02/2023] [Indexed: 02/12/2023] Open
Abstract
Tuberculosis, caused by Mycobacterium tuberculosis (Mtb), is a serious and devastating infectious disease worldwide. Approximately a quarter of the world population harbors latent Mtb infection without pathological consequences. Exposure of immunocompetent healthy individuals with Mtb does not result in active disease in more than 90% individuals, suggesting a defining role of host immunity to prevent and/or clear early infection. However, innate immune stimulation strategies have been relatively underexplored for the treatment of tuberculosis. In this study, we used cell culture and mouse models to examine the role of a heat-killed form of a non-pathogenic microbe, Caulobacter crescentus (HKCC), in inducing innate immunity and limiting Mtb infection. We also examined the added benefits of a distinct chemo-immunotherapeutic strategy that incorporates concurrent treatments with low doses of a first-line drug isoniazid and HKCC. This therapeutic approach resulted in highly significant reductions in disseminated Mtb in the lungs, liver, and spleen of mice compared to either agent alone. Our studies demonstrate the potential of a novel innate immunotherapeutic strategy with or without antimycobacterial drugs in controlling Mtb infection in mice and open new avenues for the treatment of tuberculosis in humans.
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Tonetti FR, Tomokiyo M, Fukuyama K, Elean M, Moyano RO, Yamamuro H, Shibata R, Quilodran-Vega S, Kurata S, Villena J, Kitazawa H. Post-immunobiotics increase resistance to primary respiratory syncytial virus infection and secondary pneumococcal pneumonia. Benef Microbes 2023; 14:209-221. [PMID: 37128181 DOI: 10.3920/bm2022.0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/02/2023] [Indexed: 05/03/2023]
Abstract
Previously, we demonstrated that post-immunobiotics derived from Lactobacillus gasseri TMT36, TMT39, and TMT40 strains (HK36, HK39 and HK40, respectively) differentially regulated Toll-like receptor 3 (TLR3)-mediated antiviral respiratory immunity in infant mice. In this work, we investigated whether the HK36, HK39 and HK40 nasal treatments were able to improve the resistance against primary respiratory syncytial virus (RSV) infection and secondary pneumococcal pneumonia. Our results demonstrated that the three treatments increased the resistance to primary viral infection by reducing variations in body weight, RSV titers and lung damage of infected infant mice. Post-immunobiotics significantly enhanced the expressions of interferon (IFN)-λ, IFN-β, IFN-γ, interleukin(IL) - 1β, IL-6, IL-27, Mx1, RNAseL and 2'-5'-oligoadenylate synthetase 1 (OAS1) genes and decreased tumour necrosis factor (TNF)-α in alveolar macrophages of RSV-challenged mice. In addition, the studies in the model of RSV-Streptococcus pneumoniae superinfection showed that the HK39 and HK40 treatments were capable of reducing lung damage, lung bacterial cell counts, and the dissemination of S. pneumoniae into the blood of infant mice. The protective effect was associated with increases in IFN-β, IFN-γ, IL-10, and IL-27 in the respiratory tract. This study demonstrates that the nasal application of the post-immunobiotics HK39 and HK40 stimulates innate respiratory immunity and enhances the defences against primary RSV infection and secondary pneumococcal pneumonia offering an alternative to combat respiratory superinfections in children, which can be fatal.
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Affiliation(s)
- F Raya Tonetti
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), 145 Batalla de Chacabuco st., 4000 Tucuman, Argentina
| | - M Tomokiyo
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
| | - K Fukuyama
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
| | - M Elean
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), 145 Batalla de Chacabuco st., 4000 Tucuman, Argentina
| | - R Ortiz Moyano
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), 145 Batalla de Chacabuco st., 4000 Tucuman, Argentina
| | - H Yamamuro
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
| | - R Shibata
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
| | - S Quilodran-Vega
- Laboratory of Food Microbiology, Faculty of Veterinary Sciences, University of Concepción, Avenida Vicente Méndez 595, 3801061 Chillán, Chile
| | - S Kurata
- Laboratory of Molecular Genetics, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, 980-8578 Sendai, Japan
| | - J Villena
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
| | - H Kitazawa
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), 145 Batalla de Chacabuco st., 4000 Tucuman, Argentina
- Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aobaku, 980-8572 Sendai, Japan
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Anti-Influenza Virus Potential of Probiotic Strain Lactoplantibacillus plantarum YML015 Isolated from Korean Fermented Vegetable. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8110572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Lactic acid bacteria are one of the potential natural remedies used worldwide, commonly known as probiotics. Here, the aim of this research investigation was to isolate a probiotic Lactobacilli strain, YLM015, from the popular Korean fermented vegetable “Kimchi” and to evaluate its anti-viral potential against influenza virus A (IFVA) H1N1 using the MDCK cell line in vitro, and in embryonated eggs in ovo. The YML015 strain was selected from among the 1200 Lactobacilli isolates for further studies based on its potent anti-viral efficacy. YML015 was identified and characterized as Lactoplantibacillus plantarum YML015 based on the 16S rRNA gene sequencing and biochemically with an API 50 CHL Kit. In ovo assay experienced with embryonated eggs and the hemagglutination inhibition method, as well as cytopathogenic reduction assay, was performed individually to observe anti-influenza viral activity of YML015 against influenza virus A H1N1. Additionally, YML015 was classified for its non-resistance nature as safe for humans and animals as confirmed by the antibiotic susceptibility (MIC) test, cell viability, and hemolysis assay. The heat stability test was also experienced by using different heat-treated cell-free supernatant (CFS) samples of YML015. As a result, YML015 showed highly potent anti-viral activity against influenza virus A H1N1 in vitro in the MDCK cell line. Overall findings suggest that anti-influenza viral activity of L. plantarum YML015 makes it a potential candidate of choice for use as an influential probiotic in pharmacological preparations to protect humans and animals from flu and viral infection.
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Nasal-spraying Bacillus spores as an effective symptomatic treatment for children with acute respiratory syncytial virus infection. Sci Rep 2022; 12:12402. [PMID: 35858943 PMCID: PMC9297280 DOI: 10.1038/s41598-022-16136-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 07/05/2022] [Indexed: 01/30/2023] Open
Abstract
Respiratory syncytial virus (RSV) is a leading cause of Acute Respiratory Tract Infections (ARTIs) in young children. However, there is currently no vaccine or treatment available for children. Here, we demonstrated that nasal-spraying probiotics containing 5 billion of Bacillus spores (LiveSpo Navax) is an effective symptomatic treatment in a 6-day randomized controlled clinical study for RSV-infected children (n = 40–46/group). Navax treatment resulted in 1-day faster recovery-time and 10–50% better efficacy in relieving ARTI symptoms. At day 3, RSV load and level of pro-inflammatory cytokines in nasopharyngeal samples was reduced by 630 folds and 2.7–12.7 folds respectively. This showed 53-fold and 1.8–3.6-fold more effective than those in the control-standard of care-group. In summary, nasal-spraying Bacillus spores can rapidly and effectively relieve symptoms of RSV-induced ARTIs while exhibit strong impacts in reducing viral load and inflammation. Our nasal-spraying probiotics may provide a basis for simple-to-use, low-cost, and effective treatment against viral infection in general.
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11
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Li F, Wang Y, Song X, Wang Z, Jia J, Qing S, Huang L, Wang Y, Wang S, Ren Z, Zheng K, Wang Y. The intestinal microbial metabolite nicotinamide n-oxide prevents herpes simplex encephalitis via activating mitophagy in microglia. Gut Microbes 2022; 14:2096989. [PMID: 35793266 PMCID: PMC9262364 DOI: 10.1080/19490976.2022.2096989] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Herpes simplex encephalitis (HSE), a complication of herpes simplex virus type I (HSV-1) infection causes neurological disorder or even death in immunocompromised adults and newborns. However, the intrinsic factors controlling the HSE outcome remain unclear. Here, we show that HSE mice exhibit gut microbiota dysbiosis and altered metabolite configuration and tryptophan-nicotinamide metabolism. HSV-1 neurotropic infection activated microglia, with changed immune properties and cell numbers, to stimulate antiviral immune response and contribute substantially to HSE. In addition, depletion of gut microbiota by oral antibiotics (ABX)-treatment triggered the hyper-activation of microglia, which in turn enhanced inflammatory immune response, and cytokine production, resulting in aggregated viral burden and HSE pathology. Furthermore, exogenous administration of nicotinamide n-oxide (NAMO), an oxidative product of nicotinamide derived from gut microbiota, to ABX-treated or untreated HSE mice significantly diminished microglia-mediated proinflammatory response and limited HSV-1 infection in CNS. Mechanistic study revealed that HSV-1 activates microglia by increasing mitochondrial damage via defective mitophagy, whereas microbial metabolite NAMO restores NAD+-dependent mitophagy to inhibit microglia activation and HSE progression. NAMO also prevented neuronal cell death triggered by HSV-1 infection or microglia-mediated microenvironmental toxicity. Finally, we show that NAMO is mainly generated by neomycin-sensitive bacteria, especially Lactobacillus_gasseri and Lactobacillus_reuteri. Together, these data demonstrate that gut microbial metabolites act as intrinsic restrictive factors against HSE progression via regulating mitophagy in microglia, implying further exploration of bacterial or nutritional approaches for treating neurotropic virus-related neurodegenerative diseases.
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Affiliation(s)
- Feng Li
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China,Infectious Diseases Institute, Guangzhou Eighth People’s Hospital, Guangdong, China
| | - Yiliang Wang
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Xiaowei Song
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Zhaoyang Wang
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Jiaoyan Jia
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Shurong Qing
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Lianzhou Huang
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Yuan Wang
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
| | - Shuai Wang
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Zhe Ren
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China,Zhe Ren Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou510632, China
| | - Kai Zheng
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China,Kai Zheng School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China
| | - Yifei Wang
- Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China,CONTACT Yifei Wang
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12
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Du T, Lei A, Zhang N, Zhu C. The Beneficial Role of Probiotic Lactobacillus in Respiratory Diseases. Front Immunol 2022; 13:908010. [PMID: 35711436 PMCID: PMC9194447 DOI: 10.3389/fimmu.2022.908010] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/02/2022] [Indexed: 12/24/2022] Open
Abstract
Respiratory diseases cause a high incidence and mortality worldwide. As a natural immunobiotic, Lactobacillus has excellent immunomodulatory ability. Administration of some Lactobacillus species can alleviate the symptoms of respiratory diseases such as respiratory tract infections, asthma, lung cancer and cystic fibrosis in animal studies and clinical trials. The beneficial effect of Lactobacillus on the respiratory tract is strain dependent. Moreover, the efficacy of Lactobacillus may be affected by many factors, such as bacteria dose, timing and host background. Here, we summarized the beneficial effect of administered Lactobacillus on common respiratory diseases with a focus on the mechanism and safety of Lactobacillus in regulating respiratory immunity.
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13
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Xu XY, Dhandapani S, Mi XJ, Park HR, Kim YJ. Immune-enhancing efficacy of Curtobacterium proimmune K3 lysates isolated from Panax ginseng beverages in cyclophosphamide-induced immunosuppressed mice. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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14
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Debnath N, Kumar A, Yadav AK. Probiotics as a biotherapeutics for the management and prevention of respiratory tract diseases. Microbiol Immunol 2022; 66:277-291. [DOI: 10.1111/1348-0421.12980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/20/2022] [Accepted: 04/11/2022] [Indexed: 11/27/2022]
Affiliation(s)
- Nabendu Debnath
- Centre for Molecular Biology Central University of Jammu Samba 181143 Jammu and Kashmir (UT) India
| | - Ashwani Kumar
- Department of Nutrition Biology Central University of Haryana, Mahendergarh Jant‐Pali 123031 Haryana India
| | - Ashok Kumar Yadav
- Centre for Molecular Biology Central University of Jammu Samba 181143 Jammu and Kashmir (UT) India
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15
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Song L, Huang Y, Liu G, Li X, Xiao Y, Liu C, Zhang Y, Li J, Xu J, Lu S, Ren Z. A Novel Immunobiotics Bacteroides dorei Ameliorates Influenza Virus Infection in Mice. Front Immunol 2022; 12:828887. [PMID: 35154087 PMCID: PMC8826429 DOI: 10.3389/fimmu.2021.828887] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 12/29/2021] [Indexed: 12/24/2022] Open
Abstract
Objective Probiotics can modulate immune responses to resist influenza infection. This study aims to evaluate the anti-viral efficacy of B. dorei. Methods C57BL/6J mice were infected with influenza virus together with treatment of PBS vehicle, B. dorei, or oseltamivir respectively. Anti-influenza potency of B. dorei and the underlying mechanism were determined by measuring survival rate, lung viral load and pathology, gene expression and production of cytokines and chemokines, and analysis of gut microbiota. Results Administration of B. dorei increased (by 30%) the survival of influenza-infected mice, and improved their weight loss, lung pathology, lung index, and colon length compared to the vehicle control group. B. dorei treatment reduced (by 61%) the viral load of lung tissue and increased expression of type 1 interferon more rapidly at day 3 postinfection. At day 7 postinfection, B. dorei-treated mice showed lower local (lung) and systemic (serum) levels of interferon and several proinflammatory cytokines or chemokines (IL-1β, IL-6, TNF-α, IL-10, MCP-1 and IP-10) with a efficacy comparable to oseltamivi treatment. B. dorei treatment also altered gut microbiota as indicated by increased levels of Bacteroides, Prevotella, and Lactobacillus and decreased levels of Escherichia, Shigella, and Parabacteroides. Conclusion B. dorei has anti-influenza effect. Its working mechanisms involve promoting earlier interferon expression and down-regulating both local and systemic inflammatory response. B. dorei changes the composition of gut microbiota, which may also contribute to its beneficial effects.
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Affiliation(s)
- Liqiong Song
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Yuanming Huang
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Guoxing Liu
- Respiratory Department, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China.,Traditional Chinese Medicine Department, Linwei Liu Zunji Clinic of Traditional Chinese Medicine, Weinan, China
| | - Xianping Li
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Yuchun Xiao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Chang Liu
- Respiratory Department, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Yue Zhang
- Respiratory Department, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Jintong Li
- Respiratory Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Jianguo Xu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Shan Lu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
| | - Zhihong Ren
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Research Units of Discovery of Unknown Bacteria and Function (2018 RU010), Chinese Academy of Medical Sciences, Beijing, China
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16
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HARA T, IGARASHI A, TERADAIRA T, JOH T. Heat-killed <i>Lactobacillus paracasei</i> K71 isolated from Sakekasu (sake lees) enhances Th1 response, NK cell cytotoxicity and fecal IgA content in normal BALB/c mice. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2022. [DOI: 10.3136/fstr.fstr-d-21-00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Takashi HARA
- Department of Agriculture, Faculty of Agriculture, Niigata University
| | - Akira IGARASHI
- Graduate School of Science and Technology, Niigata University
| | | | - Toshio JOH
- Department of Agriculture, Faculty of Agriculture, Niigata University
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17
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Shi HY, Zhu X, Li WL, Mak JWY, Wong SH, Zhu ST, Guo SL, Chan FKL, Zhang ST, Ng SC. Modulation of gut microbiota protects against viral respiratory tract infections: a systematic review of animal and clinical studies. Eur J Nutr 2021; 60:4151-4174. [PMID: 33852069 PMCID: PMC8044287 DOI: 10.1007/s00394-021-02519-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/16/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Earlier studies suggest that probiotics have protective effects in the prevention of respiratory tract infections (RTIs). Whether such benefits apply to RTIs of viral origin and mechanisms supporting the effect remain unclear. AIM To determine the role of gut microbiota modulation on clinical and laboratory outcomes of viral RTIs. METHODS We conducted a systematic review of articles published in Embase and MEDLINE through 20 April 2020 to identify studies reporting the effect of gut microbiota modulation on viral RTIs in clinical studies and animal models. The incidence of viral RTIs, clinical manifestations, viral load and immunological outcomes was evaluated. RESULTS We included 58 studies (9 randomized controlled trials; 49 animal studies). Six of eight clinical trials consisting of 726 patients showed that probiotics administration was associated with a reduced risk of viral RTIs. Most commonly used probiotics were Lactobacillus followed by Bifidobacterium and Lactococcus. In animal models, treatment with probiotics before viral challenge had beneficial effects against influenza virus infection by improving infection-induced survival (20/22 studies), mitigating symptoms (21/21 studies) and decreasing viral load (23/25 studies). Probiotics and commensal gut microbiota exerted their beneficial effects through strengthening host immunity. CONCLUSION Modulation of gut microbiota represents a promising approach against viral RTIs via host innate and adaptive immunity regulation. Further research should focus on next generation probiotics specific to viral types in prevention and treatment of emerging viral RTIs.
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Affiliation(s)
- Hai Yun Shi
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University; National Clinical Research Center for Digestive Diseases, Beijing Digestive Disease Center, Beijing, China
| | - Xi Zhu
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wei Lin Li
- Department of Medicine, Division of Genetics, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Joyce W Y Mak
- Department of Medicine and Therapeutics, State Key Laboratory for Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Sunny H Wong
- Department of Medicine and Therapeutics, State Key Laboratory for Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Sheng Tao Zhu
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University; National Clinical Research Center for Digestive Diseases, Beijing Digestive Disease Center, Beijing, China
| | - Shui Long Guo
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University; National Clinical Research Center for Digestive Diseases, Beijing Digestive Disease Center, Beijing, China
| | - Francis K L Chan
- Department of Medicine and Therapeutics, State Key Laboratory for Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
- Center for Gut Microbiota Research, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- Microbiota I-Center (MagIC) Limited, The Chinese University of Hong Kong, Hong Kong, China
| | - Shu Tian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University; National Clinical Research Center for Digestive Diseases, Beijing Digestive Disease Center, Beijing, China
| | - Siew C Ng
- Department of Medicine and Therapeutics, State Key Laboratory for Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China.
- Center for Gut Microbiota Research, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
- Microbiota I-Center (MagIC) Limited, The Chinese University of Hong Kong, Hong Kong, China.
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18
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Zhao J, Wan S, Sun N, Sun P, Sun Y, Khan A, Guo J, Zheng X, Fan K, Yin W, Li H. Damage to intestinal barrier integrity in piglets caused by porcine reproductive and respiratory syndrome virus infection. Vet Res 2021; 52:93. [PMID: 34162433 PMCID: PMC8220790 DOI: 10.1186/s13567-021-00965-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 04/09/2021] [Indexed: 12/24/2022] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) induces respiratory disease and reproductive failure accompanied by gastroenteritis-like symptoms. The mechanism of intestinal barrier injury caused by PRRSV infection in piglets has yet to be investigated. An in vivo PRRSV-induced model was established in 30-day-old piglets by the intramuscular injection of 2 mL of 104 TCID50/mL PRRSV for 15 days. Observations of PRRSV replication and histology were conducted in the lungs and intestine, and goblet cell counts, relative MUC2 mRNA expression, and tight junction protein, proinflammatory cytokine, TLR4, MyD88, IκB and p-IκB expression were measured. PRRSV replicated in the lungs and small intestine, as demonstrated by absolute RT-qPCR quantification, and the PRRSV N protein was detected in the lung interstitium and jejunal mucosa. PRRSV infection induced both lung and gut injury, markedly decreased villus height and the villus to crypt ratio in the small intestine, and obviously increased the number of goblet cells and the relative expression of MUC2 mRNA in the jejunum. PRRSV infection aggravated the morphological depletion of tight junction proteins and increased IL-1β, IL-6, IL-8 and TNF-α expression by activating the NF-κB signalling pathway in the jejunum. PRRSV infection impaired intestinal integrity by damaging physical and immune barriers in the intestine by inducing inflammation, which may be related to the regulation of the gut-lung axis. This study also provides a new hypothesis regarding the pathogenesis of PRRSV-induced diarrhoea.
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Affiliation(s)
- Jin Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Shuangxiu Wan
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.,School of Pharmacy, Heze University, Heze, 274000, Shandong, China
| | - Na Sun
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Panpan Sun
- Laboratory Animal Center, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yaogui Sun
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Ajab Khan
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jianhua Guo
- Department of Veterinary Pathobiology, Schubot Exotic Bird Health Center, Texas A&M University, College Station, TX, 77843, USA
| | - Xiaozhong Zheng
- Centre for Inflammation Research, Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Kuohai Fan
- Laboratory Animal Center, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Wei Yin
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Hongquan Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
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Zrelli S, Amairia S, Zrelli M. Respiratory syndrome coronavirus-2 response: Microbiota as lactobacilli could make the difference. J Med Virol 2021; 93:3288-3293. [PMID: 33336811 DOI: 10.1002/jmv.26746] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/02/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022]
Abstract
Coronavirus disease 2019 (COVID-19) is caused by respiratory syndrome coronavirus qualified as SARS-CoV-2. Viral penetration requires binding of the viral spike (S) protein to a specific cellular receptor (ACE2) highly expressed in a nasal goblet and ciliated cells. In several countries, the COVID-19 evolution was relatively benign compared to others and despite noncompliance with health recommendations on several occasions. In this overview, we attempt to define the criteria that could explain such a difference. Among these criteria, the specificity of Lactobacillus genus strains, as a part of nasal microbiota, could play a role of a barrier against viral penetration and could strengthen the host's immune system in some populations rather than others. In fact, several studies have shown the role of lactic acid bacteria, including lactobacilli, in the prevention of viral respiratory infections. This could provide important information on a possible mechanism of the virus spreading.
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Affiliation(s)
- Samia Zrelli
- Food Microbiology Laboratory, Research and Education Institution National School of Veterinary Medicine, University of Manouba, Sidi Thabet, Tunisia
| | - Safa Amairia
- Parasitology Laboratory, Research and Education Institution National School of Veterinary Medicine, University of Manouba, Sidi Thabet, Tunisia
| | - Malek Zrelli
- General Direction for Veterinary Services, Tunis, Tunisia
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20
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Kim H, Jeon B, Kim WJ, Chung DK. Effect of paraprobiotic prepared from Kimchi-derived Lactobacillus plantarum K8 on skin moisturizing activity in human keratinocyte. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104244] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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21
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Probiotics in Treatment of Viral Respiratory Infections and Neuroinflammatory Disorders. Molecules 2020; 25:molecules25214891. [PMID: 33105830 PMCID: PMC7660077 DOI: 10.3390/molecules25214891] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/18/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022] Open
Abstract
Inflammation is a biological response to the activation of the immune system by various infectious or non-infectious agents, which may lead to tissue damage and various diseases. Gut commensal bacteria maintain a symbiotic relationship with the host and display a critical function in the homeostasis of the host immune system. Disturbance to the gut microbiota leads to immune dysfunction both locally and at distant sites, which causes inflammatory conditions not only in the intestine but also in the other organs such as lungs and brain, and may induce a disease state. Probiotics are well known to reinforce immunity and counteract inflammation by restoring symbiosis within the gut microbiota. As a result, probiotics protect against various diseases, including respiratory infections and neuroinflammatory disorders. A growing body of research supports the beneficial role of probiotics in lung and mental health through modulating the gut-lung and gut-brain axes. In the current paper, we discuss the potential role of probiotics in the treatment of viral respiratory infections, including the COVID-19 disease, as major public health crisis in 2020, and influenza virus infection, as well as treatment of neurological disorders like multiple sclerosis and other mental illnesses.
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22
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Is a healthy microbiome responsible for lower mortality in COVID-19? Biologia (Bratisl) 2020; 76:819-829. [PMID: 33078028 PMCID: PMC7557238 DOI: 10.2478/s11756-020-00614-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/30/2020] [Indexed: 12/17/2022]
Abstract
The novel severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) is the cause of an ongoing pandemic with significant case fatality ratio (CFR) worldwide. Although SARS-CoV-2 primarily causes respiratory infection by binding to ACE2 receptors present on alveolar epithelial cells, studies have been published linking the disease to the small intestine enterocytes and its microbiome. Dysbiosis of microbiome, mainly intestinal and lung, can affect the course of the disease. Environmental factors, such as reduced intake of commensal bacteria from the environment or their products in the diet, play an important role in microbiome formation, which can significantly affect the immune response. In elderly, obese or chronically ill people, the microbiota is often damaged. Therefore, we speculate that a good microbiome may be one of the factors responsible for lower CFR from the coronavirus disease 2019 (COVID-19). An approach using tailored nutrition and supplements known to improve the intestinal microbiota and its immune function might help minimize the impact of the disease at least on people at higher risk from coronavirus.
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23
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The potential application of probiotics and prebiotics for the prevention and treatment of COVID-19. NPJ Sci Food 2020; 4:17. [PMID: 33083549 PMCID: PMC7536434 DOI: 10.1038/s41538-020-00078-9] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023] Open
Abstract
COVID-19 is a pandemic disease caused by the novel coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This new viral infection was first identified in China in December 2019, and it has subsequently spread globally. The lack of a vaccine or curative treatment for COVID-19 necessitates a focus on other strategies to prevent and treat the infection. Probiotics consist of single or mixed cultures of live microorganisms that can beneficially affect the host by maintaining the intestinal or lung microbiota that play a major role in human health. At present, good scientific evidence exists to support the ability of probiotics to boost human immunity, thereby preventing colonization by pathogens and reducing the incidence and severity of infections. Herein, we present clinical studies of the use of probiotic supplementation to prevent or treat respiratory tract infections. These data lead to promising benefits of probiotics in reducing the risk of COVID-19. Further studies should be conducted to assess the ability of probiotics to combat COVID-19.
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24
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Clark SE. Commensal bacteria in the upper respiratory tract regulate susceptibility to infection. Curr Opin Immunol 2020; 66:42-49. [PMID: 32416468 PMCID: PMC7665980 DOI: 10.1016/j.coi.2020.03.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/12/2020] [Accepted: 03/16/2020] [Indexed: 12/11/2022]
Abstract
The human body is host to several distinct microbial communities. Disruption of these communities increases susceptibility to a wide range of diseases, including respiratory tract infections. While commensal bacteria in the gut contribute to this effect, recent studies point to a role for commensals occupying the upper respiratory tract through direct pathogen killing and by modifying nasal and lung immune homeostasis. Clinical trials exploring 'probiotic' respiratory tract commensals are an exciting development in this area. Upper respiratory tract microbiome sequencing has revealed that destabilization of this community precedes infection, indicating that microbiome profiling of individuals has predictive value. Further investigation of respiratory tract commensal-host interactions will be critical to translate bacterial-mediated protection toward new therapeutic approaches for respiratory tract disease.
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Affiliation(s)
- Sarah E Clark
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, CO, United States.
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25
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Satomi S, Khanum S, Miller P, Suzuki S, Suganuma H, Heiser A, Gupta SK. Short Communication: Oral Administration of Heat-killed Lactobacillus brevis KB290 in Combination with Retinoic Acid Provides Protection against Influenza Virus Infection in Mice. Nutrients 2020; 12:nu12102925. [PMID: 32987850 PMCID: PMC7600661 DOI: 10.3390/nu12102925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022] Open
Abstract
Influenza virus type A (IAV) is a seasonal acute respiratory disease virus with severe symptoms, and an effective preventive measure is required. Despite many reports describing the potentially protective effects of lactic acid bacteria, few studies have investigated the effects of nutritional supplement combinations. This study reports the effect of the combined intake of heat-killed Lactobacillus brevis KB290 (KB290) and vitamin A (VA) on mice challenged with a sublethal dose of IAV. For 2 weeks, five groups of mice were fed either placebo, KB290, VA, or a combination of KB290 and VA (KB290+VA). After subsequent IAV challenge, bodyweight and general health were monitored for up to 2 weeks. Viral titres were determined in the lungs of animal subgroups euthanised at days 3, 7, and 14 after IAV challenge. A significant loss was observed in the bodyweights of IAV-infected animals from day 1 post-IAV challenge, whereas the mice fed KB290+VA did not lose any weight after IAV infection, indicating successful protection from the infection. Additionally, mice in the KB290+VA group showed the highest reduction in lung viral titres. In conclusion, the combination of KB290 and VA could be a useful food supplement relevant for protection against seasonal influenza virus infection in humans.
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Affiliation(s)
- Shohei Satomi
- Department of Nature & Wellness Research, Innovation Division, KAGOME CO., LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (S.S.); (H.S.)
- Correspondence: (S.S.); (S.K.G.); Tel.: +81-80-8132-3813 (S.S.); +64-06351-8697 (S.K.G.)
| | - Sofia Khanum
- AgResearch Ltd., Hopkirk Research Institute, Grasslands Research Centre, Private Bag 11008, Palmerston North 4442, New Zealand; (S.K.); (P.M.); (A.H.)
| | - Poppy Miller
- AgResearch Ltd., Hopkirk Research Institute, Grasslands Research Centre, Private Bag 11008, Palmerston North 4442, New Zealand; (S.K.); (P.M.); (A.H.)
| | - Shigenori Suzuki
- Department of Nature & Wellness Research, Innovation Division, KAGOME CO., LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (S.S.); (H.S.)
| | - Hiroyuki Suganuma
- Department of Nature & Wellness Research, Innovation Division, KAGOME CO., LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (S.S.); (H.S.)
| | - Axel Heiser
- AgResearch Ltd., Hopkirk Research Institute, Grasslands Research Centre, Private Bag 11008, Palmerston North 4442, New Zealand; (S.K.); (P.M.); (A.H.)
| | - Sandeep K Gupta
- AgResearch Ltd., Hopkirk Research Institute, Grasslands Research Centre, Private Bag 11008, Palmerston North 4442, New Zealand; (S.K.); (P.M.); (A.H.)
- Correspondence: (S.S.); (S.K.G.); Tel.: +81-80-8132-3813 (S.S.); +64-06351-8697 (S.K.G.)
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Shinde T, Hansbro PM, Sohal SS, Dingle P, Eri R, Stanley R. Microbiota Modulating Nutritional Approaches to Countering the Effects of Viral Respiratory Infections Including SARS-CoV-2 through Promoting Metabolic and Immune Fitness with Probiotics and Plant Bioactives. Microorganisms 2020; 8:E921. [PMID: 32570850 PMCID: PMC7355654 DOI: 10.3390/microorganisms8060921] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Viral respiratory infections (VRIs) can spread quickly and cause enormous morbidity and mortality worldwide. These events pose serious threats to public health due to time lags in developing vaccines to activate the acquired immune system. The high variability of people's symptomatic responses to viral infections, as illustrated in the current COVID-19 pandemic, indicates the potential to moderate the severity of morbidity from VRIs. Growing evidence supports roles for probiotic bacteria (PB) and prebiotic dietary fiber (DF) and other plant nutritional bioactives in modulating immune functions. While human studies help to understand the epidemiology and immunopathology of VRIs, the chaotic nature of viral transmissions makes it difficult to undertake mechanistic study where the pre-conditioning of the metabolic and immune system could be beneficial. However, recent experimental studies have significantly enhanced our understanding of how PB and DF, along with plant bioactives, can significantly modulate innate and acquired immunity responses to VRIs. Synbiotic combinations of PB and DF potentiate increased benefits primarily through augmenting the production of short-chain fatty acids (SCFAs) such as butyrate. These and specific plant polyphenolics help to regulate immune responses to both restrain VRIs and temper the neutrophil response that can lead to acute respiratory distress syndrome (ARDS). This review highlights the current understanding of the potential impact of targeted nutritional strategies in setting a balanced immune tone for viral clearance and reinforcing homeostasis. This knowledge may guide the development of public health tactics and the application of functional foods with PB and DF components as a nutritional approach to support countering VRI morbidity.
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Affiliation(s)
- Tanvi Shinde
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia;
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute, Sydney, NSW 2050, and University of Technology Sydney, Faculty of Science, Ultimo, NSW 2007, Australia;
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Peter Dingle
- Dingle Wellness, South Fremantle, WA 6162, Australia;
| | - Rajaraman Eri
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia;
| | - Roger Stanley
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia
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27
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Morais AHA, Passos TS, Maciel BLL, da Silva-Maia JK. Can Probiotics and Diet Promote Beneficial Immune Modulation and Purine Control in Coronavirus Infection? Nutrients 2020; 12:E1737. [PMID: 32532069 PMCID: PMC7352643 DOI: 10.3390/nu12061737] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/30/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
Infection caused by the SARS-CoV-2 coronavirus worldwide has led the World Health Organization to declare a COVID-19 pandemic. Because there is no cure or treatment for this virus, it is emergingly urgent to find effective and validated methods to prevent and treat COVID-19 infection. In this context, alternatives related to nutritional therapy might help to control the infection. This narrative review proposes the importance and role of probiotics and diet as adjunct alternatives among the therapies available for the treatment of this new coronavirus. This review discusses the relationship between intestinal purine metabolism and the use of Lactobacillus gasseri and low-purine diets, particularly in individuals with hyperuricemia, as adjuvant nutritional therapies to improve the immune system and weaken viral replication, assisting in the treatment of COVID-19. These might be promising alternatives, in addition to many others that involve adequate intake of vitamins, minerals and bioactive compounds from food.
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Affiliation(s)
- Ana H. A. Morais
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (B.L.L.M.); (J.K.d.S.-M.)
- Biochemistry Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
| | - Thais S. Passos
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
| | - Bruna L. L. Maciel
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (B.L.L.M.); (J.K.d.S.-M.)
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
| | - Juliana K. da Silva-Maia
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (B.L.L.M.); (J.K.d.S.-M.)
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
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Ren C, Faas MM, de Vos P. Disease managing capacities and mechanisms of host effects of lactic acid bacteria. Crit Rev Food Sci Nutr 2020; 61:1365-1393. [PMID: 32366110 DOI: 10.1080/10408398.2020.1758625] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Consumption of lactic acid bacteria (LAB) has been suggested to confer health-promoting effects on the host. However, effects of LABs have been reported to be species- and strain-specific and the mechanisms involved are subjects of discussion. Here, the possible mechanisms by which LABs induce antipathogenic, gut barrier enhancing and immune modulating effects in consumers are reviewed. Specific strains for which it has been proven that health is improved by these mechanisms are discussed. However, most strains probably act via several or combinations of mechanisms depending on which effector molecules they express. Current insight is that these effector molecules are either present on the cell wall of LAB or are excreted. These molecules are reviewed as well as the ligand binding receptors in the host. Also postbiotics are discussed. Finally, we provide an overview of the efficacy of LABs in combating infections caused by Helicobacter pylori, Salmonella, Escherichia coli, Streptococcus pneumoniae, and influenza virus, in controlling gut inflammatory diseases, in managing allergic disorders, and in alleviating cancer.
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Affiliation(s)
- Chengcheng Ren
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Marijke M Faas
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Paul de Vos
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
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29
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Zhang J, Tyler HL, Haron MH, Jackson CR, Pasco DS, Pugh ND. Macrophage activation by edible mushrooms is due to the collaborative interaction of toll-like receptor agonists and dectin-1b activating beta glucans derived from colonizing microorganisms. Food Funct 2019; 10:8208-8217. [PMID: 31701990 DOI: 10.1039/c9fo01707k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Research supports the theory that the microbiome of plants and mushrooms produce potent activators of pathogen recognition receptors which are principal contributors to the stimulation of macrophages. We have previously reported that the in vitro macrophage stimulatory activity of water-soluble extracts from 13 different types of edible mushrooms is predominantly due to bacterial components originating from the naturally occurring bacterial communities within these materials. The purpose of the current study was to further investigate the bacterial-dependent activity of the water-soluble extracts and assess whether these 13 types of mushrooms contain water-insoluble beta glucans that activate the dectin-1b signaling pathway. Activity of the water-soluble extracts was predominantly due to Toll-like receptor 2 (TLR2) and TLR4 agonists. For dectin-1b-dependent activity (indicative of water-insoluble beta glucans), culinary mushrooms (Agaricus bisporus varieties) were essentially inactive, whereas most of the medicinal mushrooms (Lentinula edodes, Grifola frondosa, Hypsizygus marmoreus varieties, Flammulina velutipes) exhibited potent activation. A. bisporus samples with no detectable dectin-1b-dependent activity had yeast colony forming units that were 687 times lower than L. edodes exhibiting high activity, indicating that the active insoluble beta glucans are derived from colonizing yeast. In addition, co-stimulation of macrophages with the TLR agonists and insoluble beta glucan was found to result in a synergistic enhancement of in vitro cytokine production. Taken together, these findings indicate that the in vitro macrophage activating potential of edible mushrooms is due to the collaborative interaction of water-soluble TLR agonists (derived from colonizing bacteria) and water-insoluble beta glucans (derived from colonizing yeast).
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Affiliation(s)
- Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, P.O. Box 1848, University, MS 38677-1848, USA.
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Wypych TP, Wickramasinghe LC, Marsland BJ. The influence of the microbiome on respiratory health. Nat Immunol 2019; 20:1279-1290. [PMID: 31501577 DOI: 10.1038/s41590-019-0451-9] [Citation(s) in RCA: 303] [Impact Index Per Article: 60.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/18/2019] [Indexed: 02/06/2023]
Abstract
The revolution in microbiota research over the past decade has provided invaluable knowledge about the function of the microbial species that inhabit the human body. It has become widely accepted that these microorganisms, collectively called 'the microbiota', engage in networks of interactions with each other and with the host that aim to benefit both the microbial members and the mammalian members of this unique ecosystem. The lungs, previously thought to be sterile, are now known to harbor a unique microbiota and, additionally, to be influenced by microbial signals from distal body sites, such as the intestine. Here we review the role of the lung and gut microbiotas in respiratory health and disease and highlight the main pathways of communication that underlie the gut-lung axis.
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Affiliation(s)
- Tomasz P Wypych
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Victoria, Australia.
| | - Lakshanie C Wickramasinghe
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Benjamin J Marsland
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Victoria, Australia.
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31
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Effects of Intranasal Pseudorabies Virus AH02LA Infection on Microbial Community and Immune Status in the Ileum and Colon of Piglets. Viruses 2019; 11:v11060518. [PMID: 31195631 PMCID: PMC6631256 DOI: 10.3390/v11060518] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/31/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022] Open
Abstract
Pseudorabies virus (PRV) variants broke out in china since 2011, causing high fever, respiratory distress, systemic neurological symptoms, and diarrhea in piglets. This study investigated the effect of intranasal PRV variant (AH02LA) infection on ileal and colonic bacterial communities and immune status in piglets. Ten piglets (free of PRV) were assigned to PRV variant and control groups (uninfected). At day 5 after inoculation, all piglets were euthanized. No PRV was detected in the ileal and colonic mucosa. In the PRV group, we observed up-regulation of specific cytokines gene expression, down-regulation of intestinal barrier-related gene expression, and reduction of secretory immunoglobulin A (sIgA) concentration in the ileum and colon. PRV infection increased the diversity of ileal bacterial community composition. PRV infection reduced the abundance of some beneficial bacteria (Lactobacillus species in the ileum and colon; butyrate-producing bacteria species in the colon) and increased the abundance of potentially pathogenic Fusobacterium nucleatum in the ileum and Sphingomonas paucimobilis in the colon. Moreover, PRV infection decreased concentrations of the beneficial lactate in the ileum and butyrate in the colon. However, this study does not allow to evaluate whether the observed changes are directly due to the PRV infection or rather to indirect effects (fever, clinical signs and changes in diet), and will be our next research content. In summary, our findings provide evidence that intranasal PRV infection directly or indirectly brings gut health risks and implications, although no PRV was detected in the ileum and colon.
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32
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Khan R, Petersen FC, Shekhar S. Commensal Bacteria: An Emerging Player in Defense Against Respiratory Pathogens. Front Immunol 2019; 10:1203. [PMID: 31214175 PMCID: PMC6554327 DOI: 10.3389/fimmu.2019.01203] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/13/2019] [Indexed: 12/31/2022] Open
Abstract
A diverse community of trillions of commensal bacteria inhabits mucosal and epidermal surfaces in humans and plays an important role in defense against pathogens, including respiratory pathogens. Commensal bacteria act on the host's immune system to induce protective responses that prevent colonization and invasion by pathogens. On the other hand, these bacteria can directly inhibit the growth of respiratory pathogens by producing antimicrobial products/signals and competing for nutrients and adhesion sites. Such mechanisms preserve the niche for commensal bacteria and support the host in containing respiratory infections. Herein, we discuss current evidence on the role of commensal bacteria in conferring protection against respiratory pathogens and the underlying mechanisms by which these bacteria do so. A deeper knowledge of how commensal bacteria interact with the host and pathogens might provide new insights that are poised to aid in the development of vaccines and therapeutics that target infectious diseases.
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Affiliation(s)
- Rabia Khan
- Faculty of Dentistry, Institute of Oral Biology, University of Oslo, Oslo, Norway
| | | | - Sudhanshu Shekhar
- Faculty of Dentistry, Institute of Oral Biology, University of Oslo, Oslo, Norway
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Tamaki R, Takahashi M, Tai S, Makioka-Itaya Y, Ijich T, Inoue R. Exploratory investigation of the anti-inflammatory effects of RNase A-treated Enterococcus faecalis strain EC-12. Biosci Biotechnol Biochem 2019; 83:1343-1353. [PMID: 31038020 DOI: 10.1080/09168451.2019.1608805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We previously reported that the major component of Enterococcus faecalis strain EC-12 (EC-12) inducing production of Interleukin (IL)-12 in mouse/human immune cells was its own RNA. This study aimed to investigate if RNase A-treated EC-12 could also produce IL-10 and to evaluate the possible effects of IL-10 produced by RNase A-treated EC-12. Three experiments were conducted: (1) Assessment of the effect of RNase A-treated EC-12 on transcriptome profiles and biological pathways in human peripheral blood mononuclear cells; (2) Determination of cytokine concentration in its culture supernatants; and (3) Supplementation of RNase A-treated EC-12 (RN) to mice with dextran sodium sulfate-induced colitis. Treatment of EC-12 with RNase A inhibited inflammatory response including the potency to induce IL-12 production, while it did not affect IL-10 production (Experiment 1 and 2). Colitis symptoms were milder in RN than in PBS-supplemented controls (Experiment 3). RNase A-treated EC-12 likely became an anti-inflammatory agent primarily inducing IL-10 production.
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Affiliation(s)
- Ryuji Tamaki
- a Laboratory of Animal Science , Kyoto Prefectural University , Kyoto , Japan
| | - Mio Takahashi
- a Laboratory of Animal Science , Kyoto Prefectural University , Kyoto , Japan
| | - Shoya Tai
- a Laboratory of Animal Science , Kyoto Prefectural University , Kyoto , Japan
| | | | - Tetsuo Ijich
- b Life Science , Combi Corporation , Saitama , Japan
| | - Ryo Inoue
- a Laboratory of Animal Science , Kyoto Prefectural University , Kyoto , Japan
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Prevention of respiratory syncytial virus infection with probiotic lactic acid bacterium Lactobacillus gasseri SBT2055. Sci Rep 2019; 9:4812. [PMID: 30886158 PMCID: PMC6423325 DOI: 10.1038/s41598-019-39602-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/19/2018] [Indexed: 12/11/2022] Open
Abstract
Lactobacillus gasseri SBT2055 (LG2055) is a probiotic lactic acid bacterium with multifunctional effects, including the prevention of influenza A virus infection in mice, reduction of adipocyte size in mice, and increased lifespan in C. elegans. We investigated whether LG2055 exhibits antiviral activity against respiratory syncytial virus (RSV), a global pathogen for which a preventive strategy is required. Following oral administration of LG2055 in mice, the RSV titre in the lung was significantly decreased, while body weight was not decreased after virus infection. Additionally, the elevated expression of pro-inflammatory cytokines in the lung upon RSV infection decreased after LG2055 administration. Moreover, interferon and interferon stimulated genes were upregulated by LG2055 treatment. Comparative cellular proteomic analysis revealed that SWI2/SNF2-related CREB-binding protein activator protein (SRCAP) was a candidate for the antiviral activity of LG2055 against RSV. There was a positive correlation between the inhibition of RSV replication and the suppression of SRCAP expression and RSV replication was suppressed by SRCAP silencing. Since SRCAP is a scaffold protein to which viral non-structural proteins bind, the downregulation of SRCAP induced by LG2055 could provide new insights about the inhibition of RSV replication. In summary, our study demonstrated that LG2055 has prophylactic potential against RSV infection.
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Enterococcus faecalis EF-2001 protects DNBS-induced inflammatory bowel disease in mice model. PLoS One 2019; 14:e0210854. [PMID: 30818368 PMCID: PMC6394946 DOI: 10.1371/journal.pone.0210854] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/03/2019] [Indexed: 12/20/2022] Open
Abstract
Recent studies have demonstrated the immunomodulatory effects of heat-killed lactic acid bacteria. The aim of this study was to evaluate the protective effect of heat-killed Enterococcus faecalis EF-2001 (EF-2001) on a model of inflammatory bowel disease (IBD). A total of 28 female NC/Nga mice were divided into 4 treatment groups. Controls were fed a normal commercial diet. In the experimental groups, colitis was induced by rectal administration of dinitrobenzene sulfonic acid. Two groups were orally administered 2 and 17 mg/kg EF-2001, respectively. EF-2001 treatment decreased the expression of several cytokines, including cyclooxygenase (COX)-2, inducible nitric oxide synthase (iNOS), interferon (IFN)-γ, interleukin (IL)-1β, and IL-6 in inflamed colon compared to the DNBS alone group. In addition, EF-2001 suppressed DNBS-induced colonic tissue destruction. Therefore, this study strongly suggests that EF-2001 could alleviate the inflammation associated with mouse IBD.
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Yasushi Y, Haraguchi Y, Shikano A, Kuda T, Takahashi H, Kimura B. Induction of gut Lactobacillus reuteri
in normal ICR mice by oral administration of L. plantarum
AN1. J Food Biochem 2018. [DOI: 10.1111/jfbc.12589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yokota Yasushi
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
| | - Yutaka Haraguchi
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
| | - Ayane Shikano
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
| | - Takashi Kuda
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
| | - Hajime Takahashi
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
| | - Bon Kimura
- Department of Food Science and Technology; Tokyo University of Marine Science and Technology; Tokyo Japan
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Zhu H, Lu X, Ling L, Li H, Ou Y, Shi X, Lu Y, Zhang Y, Chen D. Houttuynia cordata polysaccharides ameliorate pneumonia severity and intestinal injury in mice with influenza virus infection. JOURNAL OF ETHNOPHARMACOLOGY 2018; 218:90-99. [PMID: 29471085 DOI: 10.1016/j.jep.2018.02.016] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 02/09/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hottuynia cordata is an important traditional Chinese medicine for the treatment of respiratory diseases including bacterial and viral infections. Polysaccharides isolated from Houttuynia cordata (HCP), as its main ingredients, have been demonstrated to ameliorate the LPS-induced acute lung injury in mice. The study aimed to determine the protective effects of HCP on multiple organ injury in influenza A virus (IAV) H1N1 infected mice and its primary mechanisms in anti-inflammation and immune regulation. MATERIALS AND METHODS Mice were inoculated with IAV H1N1 and then treated with 20 or 40 mg/kg/d of HCP for survival test and acute lung-gut injury test. RESULTS The treatment with HCP resulted in an increase in the survival rate of H1N1 infected mice and the protection from lung and intestine injury, accompanied with the reduced virus replication. HCP markedly decreased the concentration of pulmonary proinflammatory cytokines/chemokines and the number of intestinal goblet cells, and strengthened the intestinal physical and immune barrier, according to the increase of sIgA and tight junction protein (ZO-1) in intestine. At the same time, the inhibition of inflammation in lung and gut was related to the suppressing of the expression of TLR4 and p-NFκB p65 in lung. CONCLUSIONS These results indicated that HCP ameliorated lung and intestine injury induced by IAV attack. The mechanisms were associated with inhibition of inflammation, protection of intestinal barrier and regulation of mucosal immunity, which may be related to the regulation of gut-lung axis. As an alternative medicine, HCP may have clinical potential to treat IAV infection in human beings.
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Affiliation(s)
- Haiyan Zhu
- Department of Microbiological and Biochemical Pharmacy, School of Pharmacy, Fudan University, Shanghai, China
| | - Xiaoxiao Lu
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Lijun Ling
- Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, China
| | - Hong Li
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Yingye Ou
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Xunlong Shi
- Department of Microbiological and Biochemical Pharmacy, School of Pharmacy, Fudan University, Shanghai, China
| | - Yan Lu
- Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, China
| | - Yunyi Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.
| | - Daofeng Chen
- Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, China.
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38
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Jung YJ, Lee YT, Ngo VL, Cho YH, Ko EJ, Hong SM, Kim KH, Jang JH, Oh JS, Park MK, Kim CH, Sun J, Kang SM. Heat-killed Lactobacillus casei confers broad protection against influenza A virus primary infection and develops heterosubtypic immunity against future secondary infection. Sci Rep 2017; 7:17360. [PMID: 29234060 PMCID: PMC5727132 DOI: 10.1038/s41598-017-17487-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 11/23/2017] [Indexed: 02/08/2023] Open
Abstract
Lactic acid bacteria (LAB) are the common probiotics. Here, we investigated the antiviral protective effects of heat-killed LAB strain Lactobacillus casei DK128 (DK128) on influenza viruses. Intranasal treatment of mice with DK128 conferred protection against different subtypes of influenza viruses by lessening weight loss and lowering viral loads. Protection via heat-killed DK128 was correlated with an increase in alveolar macrophage cells in the lungs and airways, early induction of virus specific antibodies, reduced levels of pro-inflammatory cytokines and innate immune cells. Importantly, the mice that were protected against primary viral infection as a result of heat-killed DK128 pretreatment developed subsequent heterosubtypic immunity against secondary virus infection. For protection against influenza virus via heat-killed DK128 pretreatment, B cells and partially CD4 T cells but not CD8 T cells were required as inferred from studies using knockout mouse models. Our study provides insight into how hosts can be equipped with innate and adaptive immunity via heat-killed DK128 treatment to protect against influenza virus, supporting that heat-killed LAB may be developed as anti-virus probiotics.
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Affiliation(s)
- Yu-Jin Jung
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA
| | - Young-Tae Lee
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA
| | - Vu Le Ngo
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA
| | - Young-Hee Cho
- Department of Animal Resource Science, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea
| | - Eun-Ju Ko
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA
| | - Sung-Moon Hong
- Department of Animal Resource Science, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea
| | - Ki-Hye Kim
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA
| | - Ji-Hun Jang
- Tobico Inc. Chungnam Techno Park, Jiksan-Eup, Seobuk-Gu, Cheonan-Si, Chungnam, 331-858, Korea
| | - Joon-Suk Oh
- Tobico Inc. Chungnam Techno Park, Jiksan-Eup, Seobuk-Gu, Cheonan-Si, Chungnam, 331-858, Korea
| | - Min-Kyung Park
- Department of Human Nutrition and Food Science, Chungwoon University, Namjang-Ri, Hongsung-Eup, Hongsung-Kun, Chungnam, 350-701, Korea
| | - Cheol-Hyun Kim
- Department of Animal Resource Science, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea
| | - Jun Sun
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, USA
| | - Sang-Moo Kang
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, 30303, USA.
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Shojadoost B, Kulkarni RR, Brisbin JT, Quinteiro-Filho W, Alkie TN, Sharif S. Interactions between lactobacilli and chicken macrophages induce antiviral responses against avian influenza virus. Res Vet Sci 2017; 125:441-450. [PMID: 29132684 DOI: 10.1016/j.rvsc.2017.10.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 09/26/2017] [Accepted: 10/28/2017] [Indexed: 01/09/2023]
Abstract
Macrophages are an important cell type of the innate immune system that upon activation, can exert antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction with certain probiotic bacteria such as lactobacilli can enhance antiviral functions of these cells. We have previously shown that administration of lactobacilli to chickens can effectively augment immune response to vaccine antigens. Here, we investigated the effects of representative strains of three Lactobacillus species, L. acidophilus, L. reuteri and L. salivarius used alone or in combination, in enhancing antiviral activity of chicken macrophages against avian influenza virus in an in vitro model using MQ-NCSU cells. Treatment of macrophages with probiotic lactobacilli significantly enhanced the antiviral functions, as determined by the virus titration assay. We also found that lactobacilli stimulation of macrophages induced significantly higher expression of interleukin (IL)-1β, interferon (IFN)- γ and IFN-α cytokine genes as well as interferon regulatory factor-7 (IRF7), 2',5'-oligoadenylate synthetase (OAS) and interferon-inducible transmembrane protein M3 (IFITM3) genes. Furthermore, macrophages that were treated with lactobacilli had significantly enhanced production of nitric oxide (NO) and IFN-γ protein as well as surface expression of the costimulatory molecule CD40. However, the antiviral and immunostimulatory effects of probiotic lactobacilli largely depended on the Lactobacillus species studied. Collectively, the results from our study using an in vitro model showed that certain Lactobacillus species can effectively augment antiviral responses in chicken macrophages.
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Affiliation(s)
- Bahram Shojadoost
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Raveendra R Kulkarni
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Jennifer T Brisbin
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada; Ceva Animal Health Inc., Guelph, Ontario, Canada
| | - Wanderley Quinteiro-Filho
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada; Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Tamiru N Alkie
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Shayan Sharif
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
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40
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Belkacem N, Serafini N, Wheeler R, Derrien M, Boucinha L, Couesnon A, Cerf-Bensussan N, Gomperts Boneca I, Di Santo JP, Taha MK, Bourdet-Sicard R. Lactobacillus paracasei feeding improves immune control of influenza infection in mice. PLoS One 2017; 12:e0184976. [PMID: 28931041 PMCID: PMC5607164 DOI: 10.1371/journal.pone.0184976] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 09/05/2017] [Indexed: 01/21/2023] Open
Abstract
Respiratory tract infections such as flu cause severe morbidity and mortality and are among the leading causes of death in children and adults worldwide. Commensal microbiota is critical for orchestrating tissue homeostasis and immunity in the intestine. Probiotics represent an interesting source of immune modulators and several clinical studies have addressed the potential beneficial effects of probiotics against respiratory infections. Therefore, we have investigated the mechanisms of protection conferred by L. paracasei CNCM I-1518 strain in a mouse model of influenza infection. Notably, local myeloid cells accumulation is generated in the lungs after seven days feeding with L. paracasei prior to viral infection. L. paracasei-fed mice showed reduced susceptibility to the influenza infection, associated with less accumulation of inflammatory cells in the lungs, faster viral clearance and general health improvement. Interestingly, Allobaculum was significantly increased in L. paracasei-fed mice 7 days after influenza infection, even if the gut microbiota composition was not altered overall. L. paracasei-purified peptidoglycan partially recapitulated the protective phenotype observed with the entire bacteria. Collectively, our results demonstrate that oral consumption of L. paracasei CNCM I-1518 modulates lung immunity was associated with an improved control of influenza infection. These results further extend the beneficial role for certain lactobacilli to alleviate the burden of respiratory tract infections.
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Affiliation(s)
- Nouria Belkacem
- Institut Pasteur, Invasive Bacterial Infections Unit, Paris, France.,Bioaster, Paris, France
| | - Nicolas Serafini
- Innate Immunity Unit, Institut Pasteur, Paris, France.,Inserm U1223, Paris, France
| | - Richard Wheeler
- Institut Pasteur, Unité Biologie et génétique de la paroi bactérienne, Dept. Microbiologie, Paris, France.,Institut National de la santé et de la Recherche Médicale (INSERM), Paris, France
| | | | | | - Aurélie Couesnon
- Bioaster, Paris, France.,INSERM, U1163, Laboratory of Intestinal Immunity, Université Paris Descartes-Sorbonne Paris Cité and Institut Imagine, Paris, France
| | - Nadine Cerf-Bensussan
- INSERM, U1163, Laboratory of Intestinal Immunity, Université Paris Descartes-Sorbonne Paris Cité and Institut Imagine, Paris, France
| | - Ivo Gomperts Boneca
- Institut Pasteur, Unité Biologie et génétique de la paroi bactérienne, Dept. Microbiologie, Paris, France.,Institut National de la santé et de la Recherche Médicale (INSERM), Paris, France
| | - James P Di Santo
- Innate Immunity Unit, Institut Pasteur, Paris, France.,Inserm U1223, Paris, France
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41
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Bartley JM, Zhou X, Kuchel GA, Weinstock GM, Haynes L. Impact of Age, Caloric Restriction, and Influenza Infection on Mouse Gut Microbiome: An Exploratory Study of the Role of Age-Related Microbiome Changes on Influenza Responses. Front Immunol 2017; 8:1164. [PMID: 28979265 PMCID: PMC5611400 DOI: 10.3389/fimmu.2017.01164] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/01/2017] [Indexed: 12/17/2022] Open
Abstract
Immunosenescence refers to age-related declines in the capacity to respond to infections such as influenza (flu). Caloric restriction represents a known strategy to slow many aging processes, including those involving the immune system. More recently, some changes in the microbiome have been described with aging, while the gut microbiome appears to influence responses to flu vaccination and infection. With these considerations in mind, we used a well-established mouse model of flu infection to explore the impact of flu infection, aging, and caloric restriction on the gut microbiome. Young, middle-aged, and aged caloric restricted (CR) and ad lib fed (AL) mice were examined after a sublethal flu infection. All mice lost 10–20% body weight and, as expected for these early time points, losses were similar at different ages and between diet groups. Cytokine and chemokine levels were also similar with the notable exception of IL-1α, which rose more than fivefold in aged AL mouse serum, while it remained unchanged in aged CR serum. Fecal microbiome phyla abundance profiles were similar in young, middle-aged, and aged AL mice at baseline and at 4 days post flu infection, while increases in Proteobacteria were evident at 7 days post flu infection in all three age groups. CR mice, compared to AL mice in each age group, had increased abundance of Proteobacteria and Verrucomicrobia at all time points. Interestingly, principal coordinate analysis determined that diet exerts a greater effect on the microbiome than age or flu infection. Percentage body weight loss correlated with the relative abundance of Proteobacteria regardless of age, suggesting flu pathogenicity is related to Proteobacteria abundance. Further, several microbial Operational Taxonomic Units from the Bacteroidetes phyla correlated with serum chemokine/cytokines regardless of both diet and age suggesting an interplay between flu-induced systemic inflammation and gut microbiota. These exploratory studies highlight the impact of caloric restriction on fecal microbiome in both young and aged animals, as well as the many complex relationships between flu responses and gut microbiota. Thus, these preliminary studies provide the necessary groundwork to examine how gut microbiota alterations may be leveraged to influence declining immune responses with aging.
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Affiliation(s)
- Jenna M Bartley
- UConn Center on Aging, Farmington, CT, United States.,Department of Immunology, UConn Health, Farmington, CT, United States
| | - Xin Zhou
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States.,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
| | - George A Kuchel
- UConn Center on Aging, Farmington, CT, United States.,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
| | - George M Weinstock
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States.,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
| | - Laura Haynes
- UConn Center on Aging, Farmington, CT, United States.,Department of Immunology, UConn Health, Farmington, CT, United States
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42
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Chen CJ, Wu GH, Kuo RL, Shih SR. Role of the intestinal microbiota in the immunomodulation of influenza virus infection. Microbes Infect 2017; 19:570-579. [PMID: 28939355 DOI: 10.1016/j.micinf.2017.09.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/02/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023]
Abstract
Prevention and treatment measures against influenza virus infection remain limited, and alternative host protection strategies are badly needed. In this review, we discuss the regulatory role of intestinal microbiota in influenza infections, and present the latest evidence for strategies seeking to harness gut microbiota for the management of influenza infections.
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Affiliation(s)
- Chi-Jene Chen
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan; Research Center for Emerging Viruses, China Medical University Hospital, Taichung, Taiwan
| | - Guan-Hong Wu
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Rei-Lin Kuo
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Pediatrics, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.
| | - Shin-Ru Shih
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Clinical Virology Laboratory, Department of Laboratory Science, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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43
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Pu F, Guo Y, Li M, Zhu H, Wang S, Shen X, He M, Huang C, He F. Yogurt supplemented with probiotics can protect the healthy elderly from respiratory infections: A randomized controlled open-label trial. Clin Interv Aging 2017; 12:1223-1231. [PMID: 28848330 PMCID: PMC5557113 DOI: 10.2147/cia.s141518] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
PURPOSE To evaluate whether yogurt supplemented with a probiotic strain could protect middle-aged and elderly people from acute upper respiratory tract infections (URTI) using a randomized, blank-controlled, parallel-group design. PATIENTS AND METHODS Two hundred and five volunteers aged ≥45 years were randomly divided into two groups. The subjects in the intervention group were orally administered 300 mL/d of yogurt supplemented with a probiotic strain, Lactobacillus paracasei N1115 (N1115), 3.6×107 CFU/mL for 12 weeks, while those in the control group retained their normal diet without any probiotic supplementation. The primary outcome was the incidence of URTI, and changes in serum protein, immunoglobulins, and the profiles of the T-lymphocyte subsets (total T-cells [CD3+], T-helper cells [CD4+], and T-cytotoxic-suppressor cells [CD8+]) during the intervention were the secondary outcomes. RESULTS Compared to the control group, the number of persons diagnosed with an acute URTI and the number of URTI events significantly decreased in the intervention group (P=0.038, P=0.030, respectively). The risk of URTI in the intervention group was evaluated as 55% of that in the control group (relative risk =0.55, 95% CI: 0.307-0.969). The change in the percentage of CD3+ cells in the intervention group was significantly higher than in the control group (P=0.038). However, no significant differences were observed in the total protein, albumin, globulin, and prealbumin levels in both groups (P>0.05). CONCLUSION The study suggested that yogurt with selected probiotic strains such as N1115 may reduce the risk of acute upper tract infections in the elderly. The enhancement of the T-cell-mediated natural immune defense might be one of the important underlying mechanisms for probiotics to express their anti-infective effects.
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Affiliation(s)
- Fangfang Pu
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Yue Guo
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
- Microbiology laboratory, Chengdu Center for Disease Control & Prevention, Chengdu, Sichuan, People’s Republic of China
| | - Ming Li
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Hong Zhu
- R&D center, Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, People’s Republic of China
| | - Shijie Wang
- R&D center, Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, People’s Republic of China
| | - Xi Shen
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Miao He
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Chengyu Huang
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Fang He
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, People’s Republic of China
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Effects of heat-killed Lactococcus lactis subsp. lactis JCM 5805 on mucosal and systemic immune parameters, and antiviral reactions to influenza virus in healthy adults; a randomized controlled double-blind study. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.06.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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45
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Miyamoto S, Komiya M, Fujii G, Hamoya T, Nakanishi R, Fujimoto K, Tamura S, Kurokawa Y, Takahashi M, Ijichi T, Mutoh M. Preventive Effects of Heat-Killed Enterococcus faecalis Strain EC-12 on Mouse Intestinal Tumor Development. Int J Mol Sci 2017; 18:ijms18040826. [PMID: 28406434 PMCID: PMC5412410 DOI: 10.3390/ijms18040826] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/07/2017] [Accepted: 04/09/2017] [Indexed: 12/21/2022] Open
Abstract
Establishing effective methods for preventing colorectal cancer by so-called “functional foods” is important because the global burden of colorectal cancer is increasing. Enterococcus faecalis strain EC-12 (EC-12), which belongs to the family of lactic acid bacteria, has been shown to exert pleiotropic effects, such as anti-allergy and anti-infectious effects, on mammalian cells. In the present study, we aimed to evaluate the preventive effects of heat-killed EC-12 on intestinal carcinogenesis. We fed 5-week-old male and female Apc mutant Min mice diets containing 50 or 100 ppm heat-killed EC-12 for 8 weeks. In the 50 ppm treated group, there was 4.3% decrease in the number of polyps in males vs. 30.9% in females, and significant reduction was only achieved in the proximal small intestine of female mice. A similar reduction was observed in the 100 ppm treated group. Moreover, heat-killed EC-12 tended to reduce the levels of c-Myc and cyclin D1 mRNA expression in intestinal polyps. Next, we confirmed that heat-killed EC-12 suppressed the transcriptional activity of the T-cell factor/lymphoid enhancer factor, a transcriptional factor involved in cyclin D1 mRNA expression in intestinal polyps. Our results suggest that heat-killed EC-12 very weakly suppresses intestinal polyp development in Min mice, in part by attenuating β-catenin signaling, and this implies that heat-killed EC-12 could be used as a “functional food”.
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Affiliation(s)
- Shingo Miyamoto
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Masami Komiya
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Gen Fujii
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Takahiro Hamoya
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Ruri Nakanishi
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Kyoko Fujimoto
- Division of Molecular Biology, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki 859-3298, Japan.
| | - Shuya Tamura
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Yurie Kurokawa
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Maiko Takahashi
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Tetsuo Ijichi
- Combi Corporation, Functional Foods Division, 5-2-39, Nishibori, Sakura-ku, Saitama-shi, Saitama 338-0832, Japan.
| | - Michihiro Mutoh
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
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de Almada CN, Almada CN, Martinez RC, Sant'Ana AS. Paraprobiotics: Evidences on their ability to modify biological responses, inactivation methods and perspectives on their application in foods. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.09.011] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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47
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Hsieh FC, Lan CCE, Huang TY, Chen KW, Chai CY, Chen WT, Fang AH, Chen YH, Wu CS. Heat-killed and live Lactobacillus reuteri GMNL-263 exhibit similar effects on improving metabolic functions in high-fat diet-induced obese rats. Food Funct 2016; 7:2374-88. [PMID: 27163114 DOI: 10.1039/c5fo01396h] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Our objective was to investigate and compare the effects of heat-killed (HK) and live Lactobacillus reuteri GMNL-263 (Lr263) on insulin resistance and its related complications in high-fat diet (HFD)-induced rats. Male Sprague-Dawley rats were fed with a HFD with either HK or live Lr263 for 12 weeks. The increases in the weight gain, serum glucose, insulin, and lipid profiles in the serum and liver observed in the HFD group were significantly reduced after HK or live Lr263 administration. Feeding HK or live Lr263 reversed the decreased number of probiotic bacteria and increased the number of pathogenic bacteria induced by high-fat treatment. The decreased intestinal barrier in the HFD group was markedly reversed by HK or live Lr263 treatments. The elevations of pro-inflammatory associated gene expressions in both adipose and hepatic tissues by high-fat administration were markedly decreased by HK or live Lr263 treatments. The increased macrophage infiltration noticed in adipose tissue after high-fat treatment was effectively suppressed by HK or live Lr263 consumption. The insulin resistance associated gene expressions in both adipose and hepatic tissues, which were downregulated in the HFD group, were markedly enhanced after HK or live Lr263 administration. HK or live Lr263 consumption significantly decreased hepatic lipogenic gene expressions stimulated by high-fat treatment. Administration of HK or live Lr263 significantly reduced hepatic oil red O staining and ameliorated the hepatic steatosis observed in high-fat treated rats. Our data suggested that similar to live Lr263, HK Lr263 exerted significant effects on attenuating obesity-induced metabolic abnormalities by reducing insulin resistance and hepatic steatosis formation.
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Affiliation(s)
- Feng-Ching Hsieh
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Mousa HAL. Prevention and Treatment of Influenza, Influenza-Like Illness, and Common Cold by Herbal, Complementary, and Natural Therapies. J Evid Based Complementary Altern Med 2016; 22:166-174. [PMID: 27055821 DOI: 10.1177/2156587216641831] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 02/11/2016] [Accepted: 03/05/2016] [Indexed: 11/15/2022] Open
Abstract
In recent years viral respiratory tract infections, especially influenza viruses, have had a major impact on communities worldwide as a result of unavailability of effective treatment or vaccine. The frequent alterations in the antigenic structures of respiratory viruses, particularly for RNA viruses, pose difficulties in production of effective vaccines. The unavailability of optimal medication and shortage of effective vaccines suggests the requirement for alternative natural therapies. Several herbal remedies were used for prevention and treatment viral respiratory illnesses. Among those that were found effective included maoto, licorice roots, antiwei, North American ginseng, berries, Echinacea, plants extracted carnosic acid, pomegranate, guava tea, and Bai Shao. There is scientific evidence regarding the effectiveness of several complementary therapies for colds. Oral zinc may reduce the length and severity of a cold. Taking vitamin C supplements on a regular basis only slightly reduces the length and severity of colds. Probiotics were found better than placebo in reducing the number episodes of acute upper respiratory tract infections, the rate of episodes of acute upper respiratory tract infection and reducing antibiotic use. Alkaline diets or drinks might have antiviral properties as in vitro studies demonstrated inactivation effect of alkaline medium on respiratory virus. Earthing might have a natural anti-inflammatory effect for human body. It is now accepted that an overwhelming inflammatory response is the cause of human deaths from avian H5N1 influenza infection. Earthing accelerates immune response following vaccination, as demonstrated by increases of gamma globulin concentration. No in vivo or clinical studies were found that investigate the role of alkalization or earthing on respiratory viral infections. Thus, future studies are recommended to reveal any potential curative effects.
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49
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Romero-Pérez GA, Egashira M, Harada Y, Tsuruta T, Oda Y, Ueda F, Tsukahara T, Tsukamoto Y, Inoue R. Orally Administered Salacia reticulata Extract Reduces H1N1 Influenza Clinical Symptoms in Murine Lung Tissues Putatively Due to Enhanced Natural Killer Cell Activity. Front Immunol 2016; 7:115. [PMID: 27066007 PMCID: PMC4814808 DOI: 10.3389/fimmu.2016.00115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/14/2016] [Indexed: 01/29/2023] Open
Abstract
Influenza is a major cause of respiratory tract infection. Although most cases do not require further hospitalization, influenza periodically causes epidemics in humans that can potentially infect and kill millions of people. To countermeasure this threat, new vaccines need to be developed annually to match emerging influenza viral strains with increased resistance to existing vaccines. Thus, there is a need for finding and developing new anti-influenza viral agents as alternatives to current treatments. Here, we tested the antiviral effects of an extract from the stems and roots of Salacia reticulata (SSRE), a plant rich in phytochemicals, such as salacinol, kotalanol, and catechins, on H1N1 influenza virus-infected mice. Following oral administration of 0.6 mg/day of SSRE, the incidence of coughing decreased in 80% of mice, and only one case of severe pulmonary inflammation was detected. Moreover, when compared with mice given Lactobacillus casei JCM1134, a strain previously shown to help increase in vitro natural killer (NK) cell activity, SSRE-administered mice showed greater and equal NK cell activity in splenocytes and pulmonary cells, respectively, at high effector cell:target cell ratios. Next, to test whether or not SSRE would exert protective effects against influenza in the absence of gut microbiota, mice were given antibiotics before being inoculated influenza virus and subsequently administered SSRE. SSRE administration induced an increase in NK cell activity in splenocytes and pulmonary cells at levels similar to those detected in mice not treated with antibiotics. Based on our results, it can be concluded that phytochemicals in the SSRE exerted protective effects against influenza infection putatively via modulation of the immune response, including enhancement of NK cell activity, although some protective effects were not necessarily through modulation of gut microbiota. Further investigation is necessary to elucidate the molecular mechanisms underlying the protective effects of SSRE against influenza infection.
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Affiliation(s)
| | - Masayo Egashira
- Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Yuri Harada
- Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Takeshi Tsuruta
- Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Yuriko Oda
- Life Science Research Laboratories, Research and Development Management Headquarters, Fujifilm Corporation , Kanagawa , Japan
| | - Fumitaka Ueda
- Life Science Research Laboratories, Research and Development Management Headquarters, Fujifilm Corporation , Kanagawa , Japan
| | - Takamitsu Tsukahara
- Kyoto Institute of Nutrition and Pathology, Kyoto, Japan; Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yasuhiro Tsukamoto
- Laboratory of Animal Hygiene, Department of Agricultural and Life Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University , Kyoto , Japan
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Simon K, Verwoolde MB, Zhang J, Smidt H, de Vries Reilingh G, Kemp B, Lammers A. Long-term effects of early life microbiota disturbance on adaptive immunity in laying hens. Poult Sci 2016; 95:1543-1554. [PMID: 26976906 DOI: 10.3382/ps/pew088] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/02/2016] [Indexed: 12/11/2022] Open
Abstract
Due to an interplay between intestinal microbiota and immune system, disruption of intestinal microbiota composition during immune development may have consequences for immune responses later in life. The present study investigated the effects of antibiotic treatment in the first weeks of life on the specific antibody response later in life in chickens. Layer chicks received an antibiotic cocktail consisting of vancomycin, neomycin, metronidazole, and amphotericin-B by oral gavage every 12 h, and ampicillin and colistin in drinking water for the first week of life. After the first week of life, chicks received ampicillin and colistin in drinking water for two more weeks. Control birds received no antibiotic cocktail and plain drinking water. Fecal microbiota composition was determined during antibiotic treatment (d 8 and 22), two weeks after cessation of antibiotic treatment (d 36), and at the end of the experimental period at d 175 using a 16S ribosomal RNA gene targeted microarray, the Chicken Intestinal Tract Chip (ChickChip). During antibiotic treatment fecal microbiota composition differed strongly between treatment groups. Fecal microbiota of antibiotic treated birds consisted mainly of Proteobacteria, and in particular E.coli, whereas fecal microbiota of control birds consisted mainly of Firmicutes, such as lactobacilli and clostridia. Two weeks after cessation of antibiotic treatment fecal microbiota composition of antibiotic treated birds had recovered and was similar to that of control birds. On d 105, 12 weeks after cessation of antibiotic treatment, chicks of both treatment groups received an intra-tracheal lipopolysaccharide (LPS)/human serum albumin (HuSA) challenge. Antibody titers against LPS and HuSA were measured 10 days after administration of the challenge. While T cell independent antibody titers (LPS) were not affected by antibiotic treatment, antibiotic treated birds showed lower T cell dependent antibody titers (HuSA) compared with control birds. In conclusion, intestinal microbial dysbiosis early in life may still have effects on the specific antibody response months after cessation of antibiotic treatment and despite an apparent recovery in microbiota composition.
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Affiliation(s)
- K Simon
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, De Elst 1, 6708 WD Wageningen, The Netherlands.
| | - M B Verwoolde
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, De Elst 1, 6708 WD Wageningen, The Netherlands
| | - J Zhang
- Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, The Netherlands
| | - H Smidt
- Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, The Netherlands
| | - G de Vries Reilingh
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, De Elst 1, 6708 WD Wageningen, The Netherlands
| | - B Kemp
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, De Elst 1, 6708 WD Wageningen, The Netherlands
| | - A Lammers
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, De Elst 1, 6708 WD Wageningen, The Netherlands
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