1
|
Ali MS, Lee EB, Quah Y, Sayem SAJ, Abbas MA, Suk K, Lee SJ, Park SC. Modulating effects of heat-killed and live Limosilactobacillus reuteri PSC102 on the immune response and gut microbiota of cyclophosphamide-treated rats. Vet Q 2024; 44:1-18. [PMID: 38682319 PMCID: PMC11060015 DOI: 10.1080/01652176.2024.2344765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 04/13/2024] [Indexed: 05/01/2024] Open
Abstract
In the present study, we investigated the potential immunomodulatory effects of heat-killed (hLR) and live Limosilactobacillus reuteri PSC102 (LR; formerly Lactobacillus reuteri PSC102) in RAW264.7 macrophage cells and Sprague-Dawley rats. RAW264.7 murine macrophage cells were stimulated with hLR and LR for 24 h. Cyclophosphamide (CTX)-induced immunosuppressed Sprague-Dawley rats were orally administered with three doses of hLR (L-Low, M-Medium, and H-High) and LR for 3 weeks. The phagocytic capacity, production of nitric oxide (NO), and expression of cytokines in RAW264.7 cells were measured, and the different parameters of immunity in rats were determined. hLR and LR treatments promoted phagocytic activity and induced the production of NO and the expression of iNOS, TNF-α, IL-1β, IL-6, and Cox-2 in macrophage cells. In the in vivo experiment, hLR and LR treatments significantly increased the immune organ indices, alleviated the spleen injury, and ameliorated the number of white blood cells, granulocytes, lymphocytes, and mid-range absolute counts in immunosuppressive rats. hLR and LR increased neutrophil migration and phagocytosis, splenocyte proliferation, and T lymphocyte subsets (CD4+, CD8+, CD45RA+, and CD28+). The levels of immune factors (IL-2, IL-4, IL-6, IL-10, IL-12A, TNF-α, and IFN-γ) in the hLR and LR groups were upregulated compared with those in the CTX-treatment group. hLR and LR treatments could also modulate the gut microbiota composition, thereby increasing the relative abundance of Bacteroidetes and Firmicutes but decreasing the level of Proteobacteria. hLR and LR protected against CTX-induced adverse reactions by modulating the immune response and gut microbiota composition. Therefore, they could be used as potential immunomodulatory agents.
Collapse
Affiliation(s)
- Md. Sekendar Ali
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
- Department of Biomedical Science and Department of Pharmacology, School of Medicine, Brain Science and Engineering Institute, Kyungpook National University, Daegu, South Korea
- Department of Pharmacy, International Islamic University Chittagong, Kumira, Chittagong, Bangladesh
| | - Eon-Bee Lee
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Yixian Quah
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon, South Korea
| | - Syed Al Jawad Sayem
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Muhammad Aleem Abbas
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Kyoungho Suk
- Department of Biomedical Science and Department of Pharmacology, School of Medicine, Brain Science and Engineering Institute, Kyungpook National University, Daegu, South Korea
| | - Seung-Jin Lee
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon, South Korea
| | - Seung-Chun Park
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
- Cardiovascular Research Institute, Kyungpook National University, Daegu, South Korea
| |
Collapse
|
2
|
Ha JS, Kim JW, Lee NK, Paik HD. Antioxidative and immunity-enhancing effects of heat-killed probiotic Enterococcus faecium KU22001 without toxin or antibiotic resistance. Microb Pathog 2024; 195:106875. [PMID: 39173849 DOI: 10.1016/j.micpath.2024.106875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 06/20/2024] [Accepted: 08/19/2024] [Indexed: 08/24/2024]
Abstract
This study evaluated the probiotic properties, safety profile, and antioxidative and immune system-enhancing effects of Enterococcus faecium strains isolated from human infant feces. E. faecium KU22001, E. faecium KU22002, and E. faecium KU22005 exhibited potential probiotic properties; however, to eliminate concerns about toxin production and antibiotic resistance, the E. faecium strains were heat-treated prior to experimental usage. E. faecium KU22001 showed the highest antioxidant activity and lowest reactive oxygen species production among the three strains. The immune system-enhancing effects of heat-killed E. faecium strains were evaluated using a nitric oxide assay. E. faecium KU22001 induced an increase in the mRNA expression of inducible nitric oxide synthase, cyclooxygenase-2, and proinflammatory cytokines, including tumor necrosis factor-α, interleukin-1β, and interleukin-6 in RAW 264.7 cells. Furthermore, E. faecium KU22001 activated the mitogen-activated protein kinase pathway, which was a key regulator of the immune system. These results demonstrate the potential use of E. faecium KU22001 as a multifunctional food material.
Collapse
Affiliation(s)
- Jun-Su Ha
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul, 05029, Republic of Korea
| | - Jong-Woo Kim
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul, 05029, Republic of Korea
| | - Na-Kyoung Lee
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hyun-Dong Paik
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul, 05029, Republic of Korea.
| |
Collapse
|
3
|
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.
Collapse
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.
| |
Collapse
|
4
|
Low Z, Lani R, Tiong V, Poh C, AbuBakar S, Hassandarvish P. COVID-19 Therapeutic Potential of Natural Products. Int J Mol Sci 2023; 24:ijms24119589. [PMID: 37298539 DOI: 10.3390/ijms24119589] [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] [Received: 05/06/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Despite the fact that coronavirus disease 2019 (COVID-19) treatment and management are now considerably regulated, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is still one of the leading causes of death in 2022. The availability of COVID-19 vaccines, FDA-approved antivirals, and monoclonal antibodies in low-income countries still poses an issue to be addressed. Natural products, particularly traditional Chinese medicines (TCMs) and medicinal plant extracts (or their active component), have challenged the dominance of drug repurposing and synthetic compound libraries in COVID-19 therapeutics. Their abundant resources and excellent antiviral performance make natural products a relatively cheap and readily available alternative for COVID-19 therapeutics. Here, we deliberately review the anti-SARS-CoV-2 mechanisms of the natural products, their potency (pharmacological profiles), and application strategies for COVID-19 intervention. In light of their advantages, this review is intended to acknowledge the potential of natural products as COVID-19 therapeutic candidates.
Collapse
Affiliation(s)
- Zhaoxuan Low
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Rafidah Lani
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Vunjia Tiong
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Chitlaa Poh
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, Petaling Jaya 47500, Malaysia
| | - Sazaly AbuBakar
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Pouya Hassandarvish
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| |
Collapse
|
5
|
Jeon HY, Kim KS, Kim S. Effects of yogurt containing probiotics on respiratory virus infections: Influenza H1N1 and SARS-CoV-2. J Dairy Sci 2023; 106:1549-1561. [PMID: 36631322 PMCID: PMC9829060 DOI: 10.3168/jds.2022-22198] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 09/25/2022] [Indexed: 01/11/2023]
Abstract
Respiratory virus infections are an escalating issue and have become common worldwide. Influenza and COVID-19 are typical infectious respiratory diseases, and they sometimes lead to various complications. In a situation in which no established drug or treatment exists, consumption of proper food might be beneficial in maintaining health against external infections. We studied the potential effects of mixtures of probiotic strains on various viral infections. The purpose of this study was to assess the ability of yogurt containing probiotics to reduce the risk of respiratory viruses such as influenza H1N1 and SARS-CoV-2 infection. First, we performed in vitro tests using infected Madin-Darby canine kidney (MDCK) and Vero E6 cells, to evaluate the potential effects of yogurt containing high-dose probiotics against influenza H1N1 and SARS-CoV-2 infection. The yogurt significantly reduced plaque formation in the virus-infected cells. We also performed in vivo tests using influenza H1N1-infected C57BL/6 mice and SARS-CoV-2-infected Syrian golden hamsters, to evaluate the potential effects of yogurt. Yogurt was administered orally once daily during the experimental period. Yogurt was also administered orally as pretreatment once daily for 3 wk before viral infection. Regarding influenza H1N1, it was found that yogurt caused an increase in the survival rate, body weight, and IFN-γ, IgG1, and IL-10 levels against viral infection and a decrease in the inflammatory cytokines TNF-α and IL-6. Although the SARS-CoV-2 copy number was not significantly reduced in the lungs of yogurt-treated SARS-CoV-2-infected hamsters, the body weights and histopathological findings of the lungs were improved in the yogurt-treated group. In conclusion, we suggest that consumption of yogurt containing probiotics can lead to beneficial effects to prevent respiratory viral infections.
Collapse
Affiliation(s)
- Ha-Young Jeon
- Knotus Co. Ltd. Research Center, Incheon, Korea, 22014
| | - Kyeong-Soon Kim
- Korea Research Institute of Bio-Medical Science, Daejeon, Korea, 34946
| | - Sokho Kim
- Knotus Co. Ltd. Research Center, Incheon, Korea, 22014.
| |
Collapse
|
6
|
Han YJ, Lee KM, Wu GH, Gong YN, Dutta A, Shih SR. Targeting influenza A virus by splicing inhibitor herboxidiene reveals the importance of subtype-specific signatures around splice sites. J Biomed Sci 2023; 30:10. [PMID: 36737756 PMCID: PMC9895974 DOI: 10.1186/s12929-023-00897-4] [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: 11/04/2022] [Accepted: 01/05/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The association between M segment splicing and pathogenicity remains ambiguous in human influenza A viruses. In this study, we aimed to investigate M splicing in various human influenza A viruses and characterize its physiological roles by applying the splicing inhibitor, herboxidiene. METHODS We examined the M splicing of human H1N1 and H3N2 viruses by comparing three H1N1 and H3N2 strains, respectively, through reverse transcriptase-polymerase chain reaction (RT-PCR) analyses. We randomly selected M sequences of human H1N1, H2N2, and H3N2 viruses isolated from 1933 to 2020 and examined their phylogenetic relationships. Next, we determined the effects of single nucleotide variations on M splicing by generating mutant viruses harboring the 55C/T variant through reverse genetics. To confirm the importance of M2 splicing in the replication of H1N1 and H3N2, we treated infected cells with splicing inhibitor herboxidiene and analyzed the viral growth using plaque assay. To explore the physiological role of the various levels of M2 protein in pathogenicity, we challenged C57BL/6 mice with the H1N1 WSN wild-type strain, mutant H1N1 (55T), and chimeric viruses including H1N1 + H3wt and H1N1 + H3mut. One-tailed paired t-test was used for virus titer calculation and multiple comparisons between groups were performed using two-way analysis of variance. RESULTS M sequence splice site analysis revealed an evolutionarily conserved single nucleotide variant C55T in H3N2, which impaired M2 expression and was accompanied by collinear M1 and mRNA3 production. Aberrant M2 splicing resulted from splice-site selection rather than a general defect in the splicing process. The C55T substitution significantly reduced both M2 mRNA and protein levels regardless of the virus subtype. Consequently, herboxidiene treatment dramatically decreased both the H1N1 and H3N2 virus titers. However, a lower M2 expression only attenuated H1N1 virus replication and in vivo pathogenicity. This attenuated phenotype was restored by M replacement of H3N2 M in a chimeric H1N1 virus, despite low M2 levels. CONCLUSIONS The discrepancy in M2-dependence emphasizes the importance of M2 in human influenza A virus pathogenicity, which leads to subtype-specific evolution. Our findings provide insights into virus adaptation processes in humans and highlights splicing regulation as a potential antiviral target.
Collapse
Affiliation(s)
- Yi-Ju Han
- grid.145695.a0000 0004 1798 0922Graduate Institute of Biomedical Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.145695.a0000 0004 1798 0922Research Center of Emerging Virus Infection, Division of Biotechnology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kuo-Ming Lee
- grid.145695.a0000 0004 1798 0922Research Center of Emerging Virus Infection, Division of Biotechnology, College of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.145695.a0000 0004 1798 0922International Master Degree Program for Molecular Medicine in Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.454211.70000 0004 1756 999XDivision of Infectious Diseases, Department of Pediatrics, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Guan-Hong Wu
- grid.145695.a0000 0004 1798 0922Graduate Institute of Biomedical Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.145695.a0000 0004 1798 0922Research Center of Emerging Virus Infection, Division of Biotechnology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Nong Gong
- grid.145695.a0000 0004 1798 0922Research Center of Emerging Virus Infection, Division of Biotechnology, College of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.454211.70000 0004 1756 999XDivision of Infectious Diseases, Department of Pediatrics, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan ,grid.454211.70000 0004 1756 999XDepartment of Laboratory Science, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Avijit Dutta
- grid.454211.70000 0004 1756 999XDivision of Infectious Diseases, Department of Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Shin-Ru Shih
- Research Center of Emerging Virus Infection, Division of Biotechnology, College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Department of Laboratory Science, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan. .,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan. .,Research Center for Food and Cosmetic Safety, Chang Gung University of Science and Technology, Taoyuan, Taiwan. .,Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
| |
Collapse
|
7
|
Wang Y, Moon A, Huang J, Sun Y, Qiu HJ. Antiviral Effects and Underlying Mechanisms of Probiotics as Promising Antivirals. Front Cell Infect Microbiol 2022; 12:928050. [PMID: 35734576 PMCID: PMC9207339 DOI: 10.3389/fcimb.2022.928050] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/10/2022] [Indexed: 11/13/2022] Open
Abstract
Probiotics exert a variety of beneficial effects, including maintaining homeostasis and the balance of intestinal microorganisms, activating the immune system, and regulating immune responses. Due to the beneficial effects of probiotics, a wide range of probiotics have been developed as probiotic agents for animal and human health. Viral diseases cause serious economic losses to the livestock every year and remain a great challenge for animals. Moreover, strategies for the prevention and control of viral diseases are limited. Viruses enter the host through the skin and mucosal surface, in which are colonized by hundreds of millions of microorganisms. The antiviral effects of probiotics have been proved, including modulation of chemical, microbial, physical, and immune barriers through various probiotics, probiotic metabolites, and host signaling pathways. It is of great significance yet far from enough to elucidate the antiviral mechanisms of probiotics. The major interest of this review is to discuss the antiviral effects and underlying mechanisms of probiotics and to provide targets for the development of novel antivirals.
Collapse
Affiliation(s)
| | | | | | - Yuan Sun
- *Correspondence: Hua-Ji Qiu, ; Yuan Sun,
| | - Hua-Ji Qiu
- *Correspondence: Hua-Ji Qiu, ; Yuan Sun,
| |
Collapse
|
8
|
Hu P, Wang L, Hu Z, Jiang L, Hu H, Rao Z, Wu L, Tang Z. Effects of Multi-Bacteria Solid-State Fermented Diets with Different Crude Fiber Levels on Growth Performance, Nutrient Digestibility, and Microbial Flora of Finishing Pigs. Animals (Basel) 2021; 11:ani11113079. [PMID: 34827811 PMCID: PMC8614399 DOI: 10.3390/ani11113079] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/20/2021] [Accepted: 10/25/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Dietary cellulase was found to be an important nutrient, and solid-state fermentation could improve the nutritional value of feed. To study the effects of multi-bacteria solid-state fermented diets and dietary crude fiber levels on finishing pigs, a total of 36 pigs were divided into four treatments: (1) pigs fed a basal diet containing 7.00% CF (HF), (2) pigs fed a basal multi-bacteria fermentation diet containing 7.00% CF (HFM), (3) pigs fed a basal diet containing 2.52% CF (LF), and (4) piglets fed a basal multi-bacteria fermentation diet containing 2.52% CF (LFM). The growth performance, nutrient digestibility and digestion amount, serum biochemical index, and fecal microflora were evaluated. Multi-bacteria solid-state fermentation had a positive effect on the nutrient digestion and serum biochemical indicators, which was contrary to high-fiber diets. Both high-fiber diets and multi-bacteria solid-state fermentation could optimize intestinal flora in finishing pigs. Abstract This study aimed to investigate the effects of multi-bacteria solid-state fermented diets with different crude fiber (CF) levels on growth performance, nutrient digestibility, and microbial flora of finishing pigs. The multi-bacteria solid-state fermented diets were made up of Lactobacillus amylovorus, Enterococcus faecalis, Bacillus subtilis, and Candida utilis. According to a 2 (factors) × 2 (levels) design, with the two factors being multi-bacteria solid-state fermentation (fed non-fermented diet or multi-bacteria fermentation) or CF levels (fed a basal diet containing 2.52% CF or 7.00% CF), a total of 36 finishing pigs (70.80 ± 5.75 kg) were divided into 4 treatments with 9 barrows per group: (1) pigs fed a diet containing 7.00% CF (HF), (2) pigs fed a multi-bacteria fermentation diet containing 7.00% CF (HFM), (3) pigs fed a diet containing 2.52% CF (LF), and (4) piglets fed a multi-bacteria fermentation diet containing 2.52% CF (LFM). This experiment lasted 28 days. The multi-bacteria solid-state fermented diet increased the backfat thickness (p < 0.05) and apparent total tract nutrient digestibility (ATTD) of CF, neutral detergent fiber (NDF), acid detergent fiber (ADF), crude protein (CP), 8 amino acids (Trp, Asp, Gly, Cys, Val, Met, Ile, and Leu), total essential amino acids (EAA), total non-essential amino acids (NEEA), and total amino acids (TAA) (p < 0.05). Multi-bacteria solid-state fermented diet increased serum concentrations of HDL-c, ABL, TP, and GLU, the serum enzyme activities of GSH-Px, T-AOC, SOD, and CAT (p < 0.05), the relative abundance of Lactobacillus, Oscillospira, and Coprococcus (p < 0.05), and the abundance of YAMINSYN3-PWY, PWY-7013, GOLPDLCAT-PWY, ARGORNPROST-PWY, and PWY-5022 pathways (p < 0.05). The multi-bacteria solid-state fermented diet reduced the digestion amount of CF, NDF, and ADF (p < 0.05), the serum concentrations of TC, TG, LDL-c, BUN, and MDA (p < 0.05), the relative abundance of Streptococcaceae (p < 0.05), and the abundance of PWY-6470, PWY0-862, HSERMETANA-PWY, LACTOSECAT-PWY, MET-SAM-PWY, PWY-6700, PWY-5347, PWY0-1061, and LACTOSECAT-PWY pathways (p < 0.05). The high-fiber diet increased average daily feed intake (p < 0.05), the serum concentrations of TC, TG, LDL-c, BUN, and MDA (p < 0.05), the relative abundance of Clostridiaceae_Clostridium and Coprococcus (p < 0.05), and the abundance of TCA-GLYOX-BYPASS, GLYCOLYSIS-TCA-GLYOX-BYPASS, and PWY-6906 pathways (p < 0.05). The high-fiber diet reduced chest circumference (p < 0.05) and ATTD of ether extract (EE), CF, NDF, ADF, Ca, CP, 18 amino acids (Trp, Thr, Val, Met, Ile, Leu, Phe, Lys, His, Arg Asp, Ser, Glu, Gly, Ala, Cys, Tyr, and Pro), EAA, NEAA, and TAA (p < 0.05). The high-fiber diet also reduced the serum concentrations of HDL-c, TP, ABL, and GLU, the serum enzyme activities of T-AOC, GSH-Px, SOD, and CAT (p < 0.05), and the relative abundance of Akkermansia and Oscillospira (p < 0.05). There was no significant effect of the interaction between multi-bacteria fermentation and dietary CF levels, except on the digestion amount of CF (p < 0.05). The 7.00% CF had a negative effect on the digestion of nutrients, but multi-bacteria solid-state fermentation diets could relieve this negative effect and increase backfat thickness. High-fiber diets and multi-bacteria solid-state fermentation improved the diversity and abundance of fecal microorganisms in finishing pigs.
Collapse
|
9
|
Pradhan D, Biswasroy P, Kar B, Bhuyan SK, Ghosh G, Rath G. Clinical Interventions and Budding Applications of Probiotics in the Treatment and Prevention of Viral Infections. Arch Med Res 2021; 53:122-130. [PMID: 34690010 DOI: 10.1016/j.arcmed.2021.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 09/06/2021] [Accepted: 09/30/2021] [Indexed: 02/07/2023]
Abstract
Over the period, viral infections remain the utmost challenge in front of the scientific community. Continuous shifting and drafting of viral antigenic peptides are the main drivers in the development of antiviral drug resistance. The resurgence of disease, difficulties facing the development of an effective vaccine and undesirable immunological outcomes, foster to develop an alternative therapeutic approach to combat viral infections. Biomimetic nature of viral particles competent to invade the host cell by downregulating the expression of immune responsive cells. To revive from such complications, strengthening the innate immunity places first and foremost defense mechanisms to restrict viral infiltration. Variegated probiotic strains show antiviral activity by stimulating the macrophage and dendritic cell to secret the inflammation response mediated chemokines and cytokines, production of antimicrobial peptides, and biosurfactants, modulate the antiviral gens expression, alter the proportional functionality of CD4+CD25+Foxp3+ regulatory cells (Tregs), etc. With the appreciation for the antiviral activity and health benefits, however, the selectivity of specific probiotic strain from the diversified microbiome, the interactive molecular mechanism of probiotics, viability and sustainability of a specific number of a probiotic strain at the end of the shelf life, stability, selection of the formulation materials, identification and validation of the key process parameters have the major challenges for the development of an effective probiotic therapy against viral infections.
Collapse
Affiliation(s)
- Deepak Pradhan
- School of Pharmaceutical Sciences, Siksha "O" Anusandhan, Odisha, India
| | - Prativa Biswasroy
- School of Pharmaceutical Sciences, Siksha "O" Anusandhan, Odisha, India
| | - Biswakanth Kar
- School of Pharmaceutical Sciences, Siksha "O" Anusandhan, Odisha, India
| | - Sanat Kumar Bhuyan
- Institute of Dental Sciences, Siksha "O" Anusandhan University, Odisha, India
| | - Goutam Ghosh
- School of Pharmaceutical Sciences, Siksha "O" Anusandhan, Odisha, India
| | - Goutam Rath
- School of Pharmaceutical Sciences, Siksha "O" Anusandhan, Odisha, India.
| |
Collapse
|
10
|
K NK, Patil P, Bhandary SK, Haridas V, N SK, E S, Shetty P. Is butyrate a natural alternative to dexamethasone in the management of CoVID-19? F1000Res 2021; 10:273. [PMID: 34046165 PMCID: PMC8108555 DOI: 10.12688/f1000research.51786.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 12/15/2022] Open
Abstract
Coronavirus disease 2019 (CoVID-19) caused by Severe Acute Respiratory Syndrome Coronavirus 2 has affected more than 100 million lives. Severe CoVID-19 infection may lead to acute respiratory distress syndrome and death of the patient, and is associated with hyperinflammation and cytokine storm. The broad spectrum immunosuppressant corticosteroid, dexamethasone, is being used to manage the cytokine storm and hyperinflammation in CoVID-19 patients. However, the extensive use of corticosteroids leads to serious adverse events and disruption of the gut-lung axis. Various micronutrients and probiotic supplementations are known to aid in the reduction of hyperinflammation and restoration of gut microbiota. The attenuation of the deleterious immune response and hyperinflammation could be mediated by short chain fatty acids produced by the gut microbiota. Butyric acid, the most extensively studied short chain fatty acid, is known for its anti-inflammatory properties. Additionally, butyric acid has been shown to ameliorate hyperinflammation and reduce oxidative stress in various pathologies, including respiratory viral infections. In this review, the potential anti-inflammatory effects of butyric acid that aid in cytokine storm depletion, and its usefulness in effective management of critical illness related to CoVID-19 have been discussed.
Collapse
Affiliation(s)
- Nithin K. K
- Division of Proteomics and Cancer Biology, Nitte University Center for Science Education and Research, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - Prakash Patil
- Central Research Laboratory, K S Hegde Medical Academy, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - Satheesh Kumar Bhandary
- Department of ENT, Justice K S Hegde Charitable Hospital, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - Vikram Haridas
- Arthritis Superspeciality Center, Hublic, Karnataka, 580020, India
| | - Suchetha Kumari N
- Department of Biochemistry/Central Research Laboratory, K S Hegde Medical Academy, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - Sarathkumar E
- Division of Proteomics and Cancer Biology, Nitte University Center for Science Education and Research, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - Praveenkumar Shetty
- Department of Biochemistry/Central Research Laboratory, K S Hegde Medical Academy, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| |
Collapse
|
11
|
Yeom J, Ma S, Lim YH. Probiotic Propionibacterium freudenreichii MJ2 Enhances Osteoblast Differentiation and Mineralization by Increasing the OPG/RANKL Ratio. Microorganisms 2021; 9:673. [PMID: 33805153 PMCID: PMC8064112 DOI: 10.3390/microorganisms9040673] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 12/22/2022] Open
Abstract
Osteoblast differentiation is important for the development of bone and the maintenance of bone density. Propionibacterium freudenreichii is a probiotic with an anti-inflammatory property. The aim of this study was to investigate the enhancement effect of P. freudenreichii MJ2 (MJ2) isolated from raw milk on osteoblast differentiation, mineralization, and its signaling pathway. For in vitro and in vivo experiments, human fetal osteoblastic cell line hFOB 1.19 and an ovariectomized rat model were used, respectively. Expression levels of genes and proteins related to osteoblast differentiation and mineralization were measured by real-time polymerase chain reaction (qPCR) and Western blotting, respectively. Alizarin red S staining was performed to measure osteoblast mineralization. Heat-killed MJ2 (hkMJ2)-treated cells showed significantly increased osteoblast differentiation via an increase in the osteoprotegerin (OPG)/receptor activator of nuclear factor-κB ligand (RANKL) ratio and significantly increased osteoblast mineralization by stimulating the expression of bone morphogenetic protein 2 and runt-related transcription factor 2. Additionally, oral administration of live or heat-killed MJ2 to ovariectomized rats inhibited osteoporosis-induced bone loss. Specifically, surface proteins isolated from MJ2 promoted osteoblast differentiation and mineralization. In conclusion, MJ2 enhanced osteoblast differentiation and mineralization through the OPG/RANKL signaling pathway and the effective component of MJ2 might be its surface proteins.
Collapse
Affiliation(s)
- Jiah Yeom
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Seongho Ma
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
- School of Biosystems and Biomedical Sciences, Korea University, Seoul 02841, Korea
- Department of Laboratory Medicine, Korea University Guro Hospital, Seoul 08308, Korea
| |
Collapse
|
12
|
Ding Q, Sun X, Cao S, Zhao C, Wang Y, Wang X. Heat-killed Lactobacillus acidophilus mediates Fusobacterium nucleatum induced pro-inflammatory responses in epithelial cells. FEMS Microbiol Lett 2021; 368:6166780. [PMID: 33693760 DOI: 10.1093/femsle/fnaa160] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 03/08/2021] [Indexed: 12/24/2022] Open
Abstract
Probiotics is widespreadly used nowadays. However, the safety issue with the use of live probiotics is still a matter of contention. In recent years, an expanding body of evidence supports the beneficial role of heat-killed probiotics in the maintenance of systemic health, whereas the role of these heat-killed bacteria on periodontal health remains unclear. This study aimed to evaluate the effects of heat-killed probiotics on periodontal pathogen virulence and associated mechanisms. We demonstrated that heat-killed Lactobacillus acidophilus was able to coaggregate with Fusobacterium nucleatum, the bridging bacteria of oral biofilm, and inhibit the adhesion and invasion of F. nucleatum, leading to a subsequent elimination of pro-inflammatory cytokine production in oral epithelial cells. This coaggregation further caused a suppression of the virulence gene fap2 expression in F. nucleatum. Therefore, heat-killed L. acidophilus might downregulate the pro-inflammatory cytokine expression in epithelial cells via coaggregation with F. nucleatum and suppression of F. nucleatum fap2 expression, which was the first demonstration that heat-killed probiotics modulate periodontal disease pathogenesis via coaggregation. Collectively, this finding provides new evidence that heat-killed probiotics might exert beneficial effects to periodontal health by coaggregating with periodontal pathogens and modulating their virulence.
Collapse
Affiliation(s)
- Qinfeng Ding
- Center of Craniofacial Orthodontics, Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Xuecheng Sun
- Research and Development Center of Microelectronics, School of Mechatronic Engineering and Automation, Shanghai University, 99 Shangda Road, Baoshan District, Shanghai 200444, China
| | - Shuai Cao
- Department of Orthodontics, Bybo Dental Hospital (Shanghai Division), Taikang LTD, Shanghai 200042, China
| | - Cancan Zhao
- Center of Craniofacial Orthodontics, Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Yitong Wang
- Center of Craniofacial Orthodontics, Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Xudong Wang
- Center of Craniofacial Orthodontics, Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| |
Collapse
|
13
|
Kang X, Liang H, Luo Y, Li Z, He F, Han X, Zhang L. Streptococcus thermophilus MN-ZLW-002 Can Inhibit Pre-adipocyte Differentiation through Macrophage Activation. Biol Pharm Bull 2021; 44:316-324. [PMID: 33390424 DOI: 10.1248/bpb.b20-00335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It is well documented that obesity and metabolic syndrome have a deep association with the intestinal immune system of the host animal. Recent studies indicate that some selected probiotics can modulate the immune responses of the host animal, thereby altering its lipid metabolism. However, the underlying mechanisms are still not fully understood. This study was conducted to investigate the possibility of probiotics to activate macrophages in the hosts, thus alter the differentiation of pre-adipocytes. In this study, Streptococcus thermophilus MN-ZLW-002 (MN-ZLW-002) was co-cultured with RAW264.7 macrophages, with Lactobacillus rhamnosus GG (LGG) as a control. The conditioned medium (CM) of the co-culture was collected and then added to 3T3-L1 pre-adipocytes. Viable and heat-killed (80 °C, 30 min) MN-ZLW-002 stimulated RAW264.7 cells to produce significant amounts of interleukin (IL)-6 and tumor necrosis factor (TNF)-α and induced intense phosphorylation of P38, p44/42 mitogen-activated protein kinase (MAPK) (extracellular signal-regulated kinase (ERK)) and nuclear factor κB (NF-κB). Cytokine production reduced dramatically when heat-killed MN-ZLW-002 was treated with Ribonuclease. Viable and heat-killed LGG induced less cytokine production and little signaling protein activation. Viable and heat-killed MN-ZLW-002-stimulated RAW264.7-CM notably suppressed pre-adipocytes differentiation. However, viable LGG-stimulated RAW264.7-CM had a weaker effect and heat-killed LGG-stimulated RAW264.7-CM had no effect. These findings suggest that viable and heat-killed (80 °C, 30 min) MN-ZLW-002 may alter its lipid metabolism by regulating its immune response, possibly via the release of cytokine, particularly TNF-α. The RNA of heat-killed MN-ZLW-002 may be a key component in its immune activation effect.
Collapse
Affiliation(s)
- Xiaohong Kang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology
| | - Huijing Liang
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University
| | - Yating Luo
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University
| | - Zhouyong Li
- R&D Center, Inner Mongolia Meng Niu Dairy Industry (Group) Co., Ltd
| | - Fang He
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University
| | - Xue Han
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology
| | - Lanwei Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology.,College of Food Science and Engineering, Ocean University of China
| |
Collapse
|
14
|
Singh K, Rao A. Probiotics: A potential immunomodulator in COVID-19 infection management. Nutr Res 2021; 87:1-12. [PMID: 33592454 PMCID: PMC7881295 DOI: 10.1016/j.nutres.2020.12.014] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 12/02/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023]
Abstract
COVID-19 caused by SARS-CoV-2 is an ongoing global pandemic. SARS-CoV-2 affects the human respiratory tract's epithelial cells, leading to a proinflammatory cytokine storm and chronic lung inflammation. With numerous patients dying daily, a vaccine and specific antiviral drug regimens are being explored. Probiotics are live microorganisms with proven beneficial effects on human health. While probiotics as nutritional supplements are long practiced in different cuisines across various countries, the emerging scientific evidence supports the antiviral and general immune-strengthening health effects of the probiotics. Here, we present an overview of the experimental studies published in the last 10 years that provide a scientific basis for unexplored probiotics as a preventive approach to respiratory viral infections. Based on collated insights from these experimental data, we identify promising microbial strains that may serve as lead prophylactic and immune-boosting probiotics in COVID-19 management.
Collapse
Affiliation(s)
- Kuljit Singh
- CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036 India
| | - Alka Rao
- CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036 India; Academy of Scientific and Innovation Research (AcSIR), Ghaziabad, Uttar Pradesh 201002 India.
| |
Collapse
|
15
|
Din AU, Mazhar M, Waseem M, Ahmad W, Bibi A, Hassan A, Ali N, Gang W, Qian G, Ullah R, Shah T, Ullah M, Khan I, Nisar MF, Wu J. SARS-CoV-2 microbiome dysbiosis linked disorders and possible probiotics role. Biomed Pharmacother 2021; 133:110947. [PMID: 33197765 PMCID: PMC7657099 DOI: 10.1016/j.biopha.2020.110947] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 10/21/2020] [Accepted: 10/25/2020] [Indexed: 01/07/2023] Open
Abstract
In December 2019, a pneumonia outbreak of unknown etiology was reported which caused panic in Wuhan city of central China, which was later identified as Coronavirus disease (COVID-19) caused by a novel coronavirus, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) by the Chinese Centre for Disease Control and Prevention (CDC) and WHO. To date, the SARS-CoV-2 spread has already become a global pandemic with a considerable death toll. The associated symptoms of the COVID-19 infection varied with increased inflammation as an everyday pathological basis. Among various other symptoms such as fever, cough, lethargy, gastrointestinal (GI) symptoms included diarrhea and IBD with colitis, have been reported. Currently, there is no sole cure for COVID-19, and researchers are actively engaged to search out appropriate treatment and develop a vaccine for its prevention. Antiviral for controlling viral load and corticosteroid therapy for reducing inflammation seems to be inadequate to control the fatality rate. Based on the available related literature, which documented GI symptoms with diarrhea, inflammatory bowel diseases (IBD) with colitis, and increased deaths in the intensive care unit (ICU), conclude that dysbiosis occurs during SARS-COV-2 infection as the gut-lung axis cannot be ignored. As probiotics play a therapeutic role for GI, IBD, colitis, and even in viral infection. So, we assume that the inclusion of studies to investigate gut microbiome and subsequent therapies such as probiotics might help decrease the inflammatory response of viral pathogenesis and respiratory symptoms by strengthening the host immune system, amelioration of gut microbiome, and improvement of gut barrier function.
Collapse
Affiliation(s)
- Ahmad Ud Din
- Drug Discovery Research Center, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Maryam Mazhar
- Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Muhammed Waseem
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Waqar Ahmad
- Drug Discovery Research Center, Southwest Medical University, Luzhou, 646000, Sichuan, China; College of Marine Life Sciences and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Asma Bibi
- Institute of Zoonosis Anhui Medical University, Hefei Anhui, 230032, China
| | - Adil Hassan
- Key Laboratory for Bio-rheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Niaz Ali
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bio-resources, College of Life Science and Technology, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
| | - Wang Gang
- Drug Discovery Research Center, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Gao Qian
- Drug Discovery Research Center, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Razi Ullah
- Key Laboratory for Bio-rheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Tariq Shah
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Mehraj Ullah
- Department of Biotechnology School of Fermentation Engineering Tianjin University of Science and Technology China, China
| | - Israr Khan
- School of Life Sciences, Lanzhou University, China
| | - Muhammad Farrukh Nisar
- Department of Physiology and Biochemistry, Cholistan University of Veterinary and Animal Sciences (CUVAS), Bahawalpur, 63100, Pakistan
| | - Jianbo Wu
- Drug Discovery Research Center, Southwest Medical University, Luzhou, 646000, Sichuan, China.
| |
Collapse
|
16
|
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] [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.
Collapse
|
17
|
Kang X, Liang H, Luo Y, Li Z, He F, Han X, Zhang L. Anti-adipogenesis and metabolism-regulating effects of heat-inactivated Streptococcus thermophilus MN-ZLW-002. Lett Appl Microbiol 2020; 72:677-687. [PMID: 32981107 DOI: 10.1111/lam.13398] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/27/2020] [Accepted: 09/14/2020] [Indexed: 12/14/2022]
Abstract
Metabolic syndrome and obesity have become serious threats to public health worldwide. This study was conducted to evaluate the anti-adipogenesis and metabolism-regulating effects of heat-inactivated Streptococcus thermophilus MN-ZLW-002 (MN-ZLW-002), which can be used as a yogurt starter. In vitro study suggested that MN-ZLW-002 stimulated the RAW264.7 macrophages to produce significant amounts of interleukin (IL)-6, IL-10 and tumour necrosis factor (TNF)-α and induced intense phosphorylation of P38, p44/42 MAPK and nuclear factor κB. MN-ZLW-002-stimulated RAW264.7-conditioned medium (CM) notably suppressed the differentiation and adipogenesis of 3T3-L1 pre-adipocytes. The 12-week in vivo study suggested that orally administered MN-ZLW-002 significantly reduced the weight gain of mice caused by the high-fat diet (HFD) at weeks 3-8; decreased fasting blood glucose levels at week 4 and week 8; decreased serum total triglyceride level at week 12. MN-ZLW-002 also reduced serum IL-1β and chemokine ligand 3 levels in the HFD-fed mice. These findings suggest that heat-inactivated MN-ZLW-002 can suppress adipocytes differentiation and lipid accumulation by regulating the immune response, possibly via the release of cytokines, particularly TNF-α; MN-ZLW-002 can improve metabolism-related indicators in the early stage of HFD intervention and regulate the related pro-inflammatory immune response.
Collapse
Affiliation(s)
- X Kang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - H Liang
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Y Luo
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Z Li
- R&D Center, Inner Mongolia Meng Niu Dairy Industry (Group) Co., Ltd, Hohhot, Inner Mongolia, China
| | - F He
- Department of Nutrition, Food Safety and Toxicology, West China School of Public Health and West China Forth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - X Han
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - L Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China.,College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| |
Collapse
|
18
|
Aggregation, adherence, anti-adhesion and antagonistic activity properties relating to surface charge of probiotic Lactobacillus brevis gp104 against Staphylococcus aureus. Microb Pathog 2020; 147:104420. [DOI: 10.1016/j.micpath.2020.104420] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 02/07/2023]
|
19
|
Jeong† M, Kim† JH, Lee JS, Kang SD, Shim S, Jung MY, Yang H, Byun S, Lee KW. Heat-Killed Lactobacillus brevis Enhances Phagocytic Activity and Generates Immune-Stimulatory Effects through Activating the TAK1 Pathway. J Microbiol Biotechnol 2020; 30:1395-1403. [PMID: 32627755 PMCID: PMC9728231 DOI: 10.4014/jmb.2002.02004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/26/2020] [Accepted: 06/17/2020] [Indexed: 12/15/2022]
Abstract
There is an increasing interest in using inactivated probiotics to modulate the host immune system and protect against pathogens. As the immunomodulatory function of heat-killed Lactobacillus brevis KCTC 12777BP (LBB) and its mechanism is unclear, we investigated the effect of LBB on immune response based on the hypothesis that LBB might exert stimulatory effects on immunity. In the current study, we demonstrate that administration of LBB can exert immune-stimulatory effects and promote clearance of foreign matters through enhancing phagocytosis. Treatment with LBB induced the production of TNF-α, IL-6, and nitric oxide in macrophages. Importantly, LBB directly increased the phagocytic activity of macrophages against bacterial particles. LBB was able to promote the production of TNF-α in bone marrow-derived macrophages and splenocytes and also increase the proliferation rate of splenocytes, suggesting that the immune-stimulating activity of LBB can be observed in primary immune cells. Investigation into the molecular mechanism responsible revealed that LBB upregulates TAK1 activity and its downstream ERK, p38, and JNK signaling pathways. To further confirm the immunomodulatory capability of LBB in vivo, we orally administered LBB to mice and assessed the effect on primary splenocytes. Splenocytes isolated from LBB-treated mice exhibited higher TNF-α expression and proliferative capacity. These results show that heat-killed L. brevis, a wildly consumed probiotic, may provide protection against pathogens through enhancing host immunity.
Collapse
Affiliation(s)
- Minju Jeong†
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic of Korea
| | - Jae Hwan Kim†
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Su Lee
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Shin Dal Kang
- Research Institute of Food and Biotechnology, SPC Group, Seoul 151742, Republic of Korea
| | - Sangmin Shim
- Research Institute of Food and Biotechnology, SPC Group, Seoul 151742, Republic of Korea
| | - Moon Young Jung
- Research Institute of Food and Biotechnology, SPC Group, Seoul 151742, Republic of Korea
| | - Hee Yang
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea,Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Republic of Korea
| | - Sanguine Byun
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea,Corresponding authors K.W.L. Phone: +82-2-880-4662 E-mail:
| | - Ki Won Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic of Korea,Advanced Institutes of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea,Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Republic of Korea,Corresponding authors K.W.L. Phone: +82-2-880-4662 E-mail:
| |
Collapse
|
20
|
Jeon DB, Shin HG, Lee BW, Jeong SH, Kim JH, Ha JH, Park JY, Kwon HJ, Kim WJ, Ryu YB, Lee IC. Effect of heat-killed Enterococcus faecalis EF-2001 on ethanol-induced acute gastric injury in mice: Protective effect of EF-2001 on acute gastric ulcer. Hum Exp Toxicol 2020; 39:721-733. [PMID: 31957490 DOI: 10.1177/0960327119899987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Enterococcus faecalis is a facultative anaerobic gram-positive commensal bacterium common in the gastrointestinal tract of animals and humans. This study aimed to investigate the protective effects of heat-killed E. faecalis EF-2001 (EF-2001) on acute gastric ulcer using a murine model of ethanol (EtOH)-induced acute gastric injury. EF-2001 (20, 40, and 80 mg/kg/day) was administered by oral gavage for 5 days before EtOH treatment (10 mL/kg body weight). EF-2001 effectively attenuated EtOH-induced gastric mucosal injury with reduced gastric mucosal ulcer and histological damage score. Pretreatment of EF-2001 markedly suppressed the phosphorylation of mitogen-activated protein kinases (MAPKs; ERK1/2, JNK, and p38MAPK). In addition, EF-2001 significantly inhibited phosphorylation of nuclear factor kappa B (NF-κB) and subsequently suppressed the upregulation of inducible nitric oxide synthase, cyclooxygenase-2, tumor necrosis factor alpha, interleukin 1 beta, and interleukin 6 in gastric tissues. Taken together, these results suggest that EF-2001 exerts a gastroprotective effect against acute gastric injury, and the underlying mechanism might be associated with the suppression of MAPKs and NF-κB signaling and consequent reduction of pro-inflammatory mediators or cytokines.
Collapse
Affiliation(s)
- D-B Jeon
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - H-G Shin
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - B-W Lee
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - S-H Jeong
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - J-H Kim
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - J-H Ha
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - J-Y Park
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - H-J Kwon
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - W-J Kim
- Research and Development Center, Korea BeRM Co. Ltd, Seoul, Republic of Korea
| | - Y-B Ryu
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| | - I-C Lee
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, Republic of Korea
| |
Collapse
|
21
|
Heat-killed probiotic regulates the body’s regulatory immunity to attenuate subsequent experimental autoimmune arthritis. Immunol Lett 2019; 216:89-96. [DOI: 10.1016/j.imlet.2019.10.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 10/11/2019] [Accepted: 10/16/2019] [Indexed: 12/22/2022]
|
22
|
Guimarães JT, Balthazar CF, Scudino H, Pimentel TC, Esmerino EA, Ashokkumar M, Freitas MQ, Cruz AG. High-intensity ultrasound: A novel technology for the development of probiotic and prebiotic dairy products. ULTRASONICS SONOCHEMISTRY 2019; 57:12-21. [PMID: 31208607 DOI: 10.1016/j.ultsonch.2019.05.004] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/15/2019] [Accepted: 05/05/2019] [Indexed: 05/08/2023]
Abstract
High-intensity ultrasound (HIUS) can be used as a mild-preservation technology in dairy products, due to its ability to inactivate pathogenic microorganisms and enzymes. In addition, it can result in physical and chemical alterations in the products and has impact on the probiotic viability and metabolic activity. This review provides an overview of the effects of HIUS on dairy products manufactured with probiotics and prebiotics. Furthermore, it presents perspectives of HIUS application on paraprobiotics and postbiotics products. HIUS has been proven to be a potential technology and its application to fermented dairy products can result in shorter processing time, increased probiotic viability, and products with low lactose content, higher oligosaccharides concentration, less undesirable taste (lower propionic and acetic acids content) and reduced ingredients (no need of prebiotic addition or β-galactosidase inclusion). In cheeses, HIUS can reduce the ripening time and accelerate proteolysis, resulting in products with better sensory, textural and nutritional (bioactive peptides) characteristics. Furthermore, it can change the prebiotic structure, facilitating the access for the probiotics. The impact of the HIUS is highly dependent on the process parameters (frequency, power, processing time, pulse mode and duration), type of probiotic culture and food composition. Therefore, HIUS process parameters must be precisely quantified and controlled. The HIUS can also be applied to the inactivation of probiotic cultures and development of paraprobiotic products or to the improvement in the production of soluble factors (postbiotics) with health effects. Further researches should be conducted to evaluate the efficiency of this methodology in the cases of paraprobiotic and postbiotic products.
Collapse
Affiliation(s)
- Jonas T Guimarães
- Department of Food Technology, Faculty of Veterinary, Fluminense Federal University (UFF), Niterói, RJ, Brazil.
| | - Celso F Balthazar
- Department of Food Technology, Faculty of Veterinary, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Hugo Scudino
- Department of Food Technology, Faculty of Veterinary, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Tatiana C Pimentel
- Federal Institute of Paraná (IFPR), Campus Paranavaí, 87703-536 Paranavaí, PR, Brazil
| | - Erick A Esmerino
- Department of Food Technology, Federal Rural University of Rio de Janeiro (UFRRJ), 23890-000 Seropédica, RJ, Brazil
| | | | - Monica Q Freitas
- Department of Food Technology, Faculty of Veterinary, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Adriano G Cruz
- Department of Food, Federal Institute of Science and Technology of Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, Brazil
| |
Collapse
|
23
|
Pedret A, Valls RM, Calderón-Pérez L, Llauradó E, Companys J, Pla-Pagà L, Moragas A, Martín-Luján F, Ortega Y, Giralt M, Caimari A, Chenoll E, Genovés S, Martorell P, Codoñer FM, Ramón D, Arola L, Solà R. Effects of daily consumption of the probiotic Bifidobacterium animalis subsp. lactis CECT 8145 on anthropometric adiposity biomarkers in abdominally obese subjects: a randomized controlled trial. Int J Obes (Lond) 2019; 43:1863-1868. [PMID: 30262813 PMCID: PMC6760601 DOI: 10.1038/s41366-018-0220-0] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/25/2018] [Accepted: 08/29/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND The effects of probiotic Bifidobacterium animalis subsp. lactis CECT 8145 (Ba8145) and those of its heat-killed form (h-k Ba8145) on human anthropometric adiposity biomarkers are unknown. OBJECTIVE To assess the effect of Ba8145 and h-k Ba8145 ingestion on anthropometric adiposity biomarkers. DESIGN Randomized, parallel, double-blind, placebo-controlled trial with abdominally obese individuals. Participants (n = 135) consumed 1 capsule/day containing 1010 colony forming unit (CFU) of Ba8145, 1010 CFU of h-k Ba8145, or placebo (maltodextrin) for 3 months. RESULTS Ba8145 ingestion decreased waist circumference, waist circumference/height ratio, and Conicity index (P < 0.05) versus its baseline. Changes versus the placebo group reached significance (P < 0.05) after the h-k Ba8145 treatment. Ba8145 decreased the body mass index compared with baseline and placebo group (P < 0.05). The decrease in visceral fat area after Ba8145 treatments reached significance (P < 0.05) only after h-k Ba8145. When analyses by gender were performed, significance remained only for women. Diastolic blood pressure and HOMA index decreased (P < 0.05) after h-k Ba8145. Gut microbiome analyses showed an increase in Akkermansia spp. after Ba8145 treatment, particularly in the live form, which was inversely related to weight (P = 0.003). CONCLUSIONS In abdominally obese individuals, consumption of Ba8145, both as viable and mainly as heat-killed cells, improves anthropometric adiposity biomarkers, particularly in women. An increase in the gut Akkermansia genus appears as a possible mechanism involved. Our results support Ba8145 probiotic as a complementary strategy in obesity management.
Collapse
Affiliation(s)
- Anna Pedret
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Rosa M Valls
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain.
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain.
| | - Lorena Calderón-Pérez
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Elisabet Llauradó
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Judit Companys
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Laura Pla-Pagà
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Ana Moragas
- Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
- Institut Universitari d'Investigació en Atenció Primària-IDIAP Jordi Gol, Tarragona, Spain
- Primary Care Centre Jaume I, Institut Català de la Salut, Tarragona, Spain
| | - Francisco Martín-Luján
- Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
- Institut Universitari d'Investigació en Atenció Primària-IDIAP Jordi Gol, Tarragona, Spain
- Primary Care Centre El Morell, Institut Català de la Salut, Tarragona, Spain
| | - Yolanda Ortega
- Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
- Institut Universitari d'Investigació en Atenció Primària-IDIAP Jordi Gol, Tarragona, Spain
- Primary Care Centre Salou, Institut Català de la Salut, Tarragona, Spain
| | - Montse Giralt
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
| | - Antoni Caimari
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
| | - Empar Chenoll
- Biopolis SL/Archer Daniels Midland. R&D Department (ADM Nutrition). C/Catedrático Agustín Escardino Benlloch 9, 46980-Paterna, Valencia, Spain
| | - Salvador Genovés
- Biopolis SL/Archer Daniels Midland. R&D Department (ADM Nutrition). C/Catedrático Agustín Escardino Benlloch 9, 46980-Paterna, Valencia, Spain
| | - Patricia Martorell
- Biopolis SL/Archer Daniels Midland. R&D Department (ADM Nutrition). C/Catedrático Agustín Escardino Benlloch 9, 46980-Paterna, Valencia, Spain
| | - Francisco M Codoñer
- Lifesequencing/Archer Daniels Midland. R&D Department (ADM Nutrition). C/Catedrático Agustín Escardino Benlloch 9, 46980-Paterna, Valencia, Spain
| | - Daniel Ramón
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Biopolis SL/Archer Daniels Midland. R&D Department (ADM Nutrition). C/Catedrático Agustín Escardino Benlloch 9, 46980-Paterna, Valencia, Spain
| | - Lluís Arola
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Química, Grup de Recerca en Nutrigenòmica, Tarragona, Spain
| | - Rosa Solà
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Reus, Spain
- Universitat Rovira i Virgili, Facultat de Medicina i Ciències de la Salut, Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Reus, Spain
- Hospital Universitari Sant Joan de Reus, Reus, Spain
| |
Collapse
|
24
|
Liu Z, Subbaraj A, Fraser K, Jia H, Chen W, Day L, Roy NC, Young W. Human milk and infant formula differentially alters the microbiota composition and functional gene relative abundance in the small and large intestines in weanling rats. Eur J Nutr 2019; 59:2131-2143. [DOI: 10.1007/s00394-019-02062-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/15/2019] [Indexed: 02/06/2023]
|
25
|
Shape of gastrointestinal immunity with non-genetically modified Lactococcus lactis particles requires commensal bacteria and myeloid cells-derived TGF-β1. Appl Microbiol Biotechnol 2019; 103:3847-3861. [PMID: 30852661 DOI: 10.1007/s00253-019-09716-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/05/2019] [Accepted: 02/23/2019] [Indexed: 12/14/2022]
Abstract
Heat-killed probiotics or microbial autologous components show multiple activities on modulating host immune responses towards tolerance or vice versus aggressiveness. Gram-positive enhancer matrix particles (GEMs), the non-genetically modified particles which composed of the cell wall derived from Lactococcus lactis (L. lactis), were used as a typical microbial molecule to investigate the mechanism of opposite immune responses generated in disparate scenarios. The results of stool 16S rRNA Illumina sequencing suggested that the overwhelming number of mice pre-administered with GEMs showed the expansion of Bacteroidetes but contraction of Verrucomicrobia. Co-administration GEMs and antibiotics could preserve the microbial diversity, even though the abundance of gut microbes was largely depleted by antibiotics. Additionally, dendritic cells (DCs) from mice receiving GEMs rather than DCs that in vitro treated with GEMs induced the expansion of regulatory T cells (Tregs), witnessing the critical role of gut flora alteration. Importantly, this alteration provided protection to alleviate dextran sulfate sodium (DSS)-induced intestinal inflammation. On the other hand, in the context of Helicobacter felis (H. felis) infection, the mice pre-administrated with GEMs exhibited a comparably potent gastric immunity with the elevated expression of IFN-γ, IL-17, and multiple anti-microbial factors, leading to the reduced burden of H. felis. However, tolerance for both DSS-induced intestinal inflammation and immunity against H. felis was depleted in a mice model lacking of transforming growth factor-β1 (TGF-β1) in myeloid cells. These findings suggest that GEMs can modulate host immune responses bidirectionally according to context, and may serve as a supplement for antibiotic treatment.
Collapse
|
26
|
Chung IC, OuYang CN, Yuan SN, Lin HC, Huang KY, Wu PS, Liu CY, Tsai KJ, Loi LK, Chen YJ, Chung AK, Ojcius DM, Chang YS, Chen LC. Pretreatment with a Heat-Killed Probiotic Modulates the NLRP3 Inflammasome and Attenuates Colitis-Associated Colorectal Cancer in Mice. Nutrients 2019; 11:nu11030516. [PMID: 30823406 PMCID: PMC6471765 DOI: 10.3390/nu11030516] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/19/2019] [Accepted: 02/24/2019] [Indexed: 01/22/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignancies worldwide. Inflammation contributes to cancer development and inflammatory bowel disease is an important risk factor for CRC. The aim of this study is to assess whether a widely used probiotic Enterococcus faecalis can modulate the NLRP3 inflammasome and protect against colitis and colitis-associated CRC. We studied the effect of heat-killed cells of E. faecalis on NLRP3 inflammasome activation in THP-1-derived macrophages. Pretreatment of E. faecalis or NLRP3 siRNA can inhibit NLRP3 inflammasome activation in macrophages in response to fecal content or commensal microbes, P. mirabilis or E. coli, according to the reduction of caspase-1 activation and IL-1β maturation. Mechanistically, E. faecalis attenuates the phagocytosis that is required for the full activation of the NLRP3 inflammasome. In in vivo mouse experiments, E. faecalis can ameliorate the severity of intestinal inflammation and thereby protect mice from dextran sodium sulfate (DSS)-induced colitis and the formation of CRC in wild type mice. On the other hand, E. faecalis cannot prevent DSS-induced colitis in NLRP3 knockout mice. Our findings indicate that application of the inactivated probiotic, E. faecalis, may be a useful and safe strategy for attenuation of NLRP3-mediated colitis and inflammation-associated colon carcinogenesis.
Collapse
Affiliation(s)
- I-Che Chung
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 333, Taiwan.
| | - Chun-Nan OuYang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 333, Taiwan.
| | - Sheng-Ning Yuan
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 333, Taiwan.
| | - Hsin-Chung Lin
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 114, Taiwan.
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, Taipei 114, Taiwan.
| | - Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei 114, Taiwan.
| | - Pao-Shu Wu
- Department of Pathology, Mackay Memorial Hospital, New Taipei City 251, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
| | - Chia-Yuan Liu
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, New Taipei City 251, Taiwan.
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City 251, Taiwan.
| | - Kuen-Jou Tsai
- Department of Laboratory Medicine, MacKay Memorial Hospital, Taipei 104, Taiwan.
| | - Lai-Keng Loi
- Department of Dentistry, School of Dentistry, National Yang-Minutesg University, Taipei 112, Taiwan.
| | - Yu-Jen Chen
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City 251, Taiwan.
- Department of Radiation Oncology, Mackay Memorial Hospital, New Taipei City 251, Taiwan.
| | - An-Ko Chung
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
| | - David M Ojcius
- Department of Biomedical Sciences, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, CA 94103, USA.
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan 333, Taiwan.
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan.
| | - Yu-Sun Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 333, Taiwan.
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
- Department of Otolaryngology-Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou 333, Taiwan.
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
| |
Collapse
|
27
|
Clostridium butyricum MIYAIRI 588 Increases the Lifespan and Multiple-Stress Resistance of Caenorhabditis elegans. Nutrients 2018; 10:nu10121921. [PMID: 30563064 PMCID: PMC6316807 DOI: 10.3390/nu10121921] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/01/2018] [Accepted: 12/02/2018] [Indexed: 12/16/2022] Open
Abstract
Clostridium butyricum MIYAIRI 588 (CBM 588), one of the probiotic bacterial strains used for humans and domestic animals, has been reported to exert a variety of beneficial health effects. The effect of this probiotic on lifespan, however, is unknown. In the present study, we investigated the effect of CBM 588 on lifespan and multiple-stress resistance using Caenorhabditis elegans as a model animal. When adult C. elegans were fed a standard diet of Escherichia coli OP50 or CBM 588, the lifespan of the animals fed CBM 588 was significantly longer than that of animals fed OP50. In addition, the animals fed CBM588 exhibited higher locomotion at every age tested. Moreover, the worms fed CBM 588 were more resistant to certain stressors, including infections with pathogenic bacteria, UV irradiation, and the metal stressor Cu2+. CBM 588 failed to extend the lifespan of the daf-2/insulin-like receptor, daf-16/FOXO and skn-1/Nrf2 mutants. In conclusion, CBM 588 extends the lifespan of C. elegans probably through regulation of the insulin/IGF-1 signaling (IIS) pathway and the Nrf2 transcription factor, and CBM 588 improves resistance to several stressors in C. elegans.
Collapse
|
28
|
Awais MM, Jamal MA, Akhtar M, Hameed MR, Anwar MI, Ullah MI. Immunomodulatory and ameliorative effects of Lactobacillus and Saccharomyces based probiotics on pathological effects of eimeriasis in broilers. Microb Pathog 2018; 126:101-108. [PMID: 30385394 DOI: 10.1016/j.micpath.2018.10.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 09/13/2018] [Accepted: 10/27/2018] [Indexed: 11/28/2022]
Abstract
Eimeria infection is very important in broilers and causes heavy economic losses in extensive farming system due to reduced weight gains, high mortality and poor feed conversion ratio (FCR). Under the circumstances, there is a dire need to devise effective control strategies to avoid/counteract this infectious threat. This study was conducted to assess the immunomodulatory and ameliorative effects of Lactobacillus and Saccharomyces based probiotics against Eimeria infection in broilers. The results showed statistically higher (P < 0.05) lymphoproliferative responses in experimental groups treated either with Lactobacillus or Saccharomyces based probiotics, as compared to control group. Further higher antibody titers (geomean titers) were also recorded in chickens of experimental groups treated with probiotics as compared to those of control group. The probiotic treated groups also revealed significantly improved (P < 0.05) FCRs as compared to control group. In challenge experiment, significantly lower (P < 0.05) oocyst counts were recorded in broilers treated with probiotics, when compared with control group. Further, experimental groups also revealed significantly higher (P < 0.05) daily weight gains and protection rates as compared to control. The data regarding the lesion scoring showed that chickens treated with probiotics had higher values of percent protection against intestinal and caecal lesion, when compared with those of control group. In conclusion, supplementation of probiotics proved very useful to enhance the immunological and performance potentials of broilers which subsequently provided protection against Eimeria infection. Further studies on the physico-chemical properties along with commercial feasibility and cost benefit analysis of these probiotic species are needed for wise selection to get maximum profit from broiler industry.
Collapse
Affiliation(s)
- Mian Muhammad Awais
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan.
| | - Muhammad Asif Jamal
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Masood Akhtar
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Muhammad Raza Hameed
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Muhammad Irfan Anwar
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Muhammad Irfan Ullah
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| |
Collapse
|
29
|
Gordon S. Legacy of the influenza pandemic 1918: Introduction. Biomed J 2018; 41:215-217. [PMID: 30348264 PMCID: PMC6197992 DOI: 10.1016/j.bj.2018.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 11/28/2022] Open
Affiliation(s)
- Siamon Gordon
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Exeter College Emeritus Fellow in Pathology, and Emeritus GlaxoWellcome Professor of Cellular Pathology, University of Oxford, UK.
| |
Collapse
|
30
|
Kim DH, Chung WC, Chun SH, Han JH, Song MJ, Lee KW. Enhancing the natural killer cell activity and anti-influenza effect of heat-treated Lactobacillus plantarum nF1-fortified yogurt in mice. J Dairy Sci 2018; 101:10675-10684. [PMID: 30316596 DOI: 10.3168/jds.2018-15137] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/23/2018] [Indexed: 12/17/2022]
Abstract
Influenza A virus (IAV) infection is a global public health concern. It causes respiratory diseases ranging from mild illness to fatal disease. Natural killer (NK) cells are an innate immune component that kill infected cells and secrete cytokines to modulate the adaptive immune system; they constitute the first-line defense and play important roles in controlling IAV infection. This study evaluated the effect of daily administration of heat-treated Lactobacillus plantarum nF1-fortified yogurt on immunity and protection against IAV infection. Mice administered with heat-treated L. plantarum nF1-fortified yogurt showed elevated NK cell-related cytokine expression levels. Daily administration of the L. plantarum nF1-fortified yogurt before IAV infection also enhanced splenic NK activity, lung inflammatory cytokine responses, and survival rate. Thus, daily administration of nF1-fortified yogurt enhances host immunity and helps prevent IAV infection.
Collapse
Affiliation(s)
- Da Hyun Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Woo-Chang Chung
- Virus-Host Interactions Laboratory, Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Su-Hyun Chun
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Ji Ho Han
- Virus-Host Interactions Laboratory, Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Moon Jung Song
- Virus-Host Interactions Laboratory, Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Kwang-Won Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| |
Collapse
|
31
|
Abstract
Purpose
Consumer inclination towards probiotic foods has been stimulated due to well-documented evidence of health benefits of probiotic-containing products and consumer demand for natural products. It is assumed that the viability and metabolic activities of probiotics are essential for extending health benefits and for successful marketing of probiotics as a functional food. The purpose of this paper is to demonstrate that even dead or inactivated probiotic cells could extend health benefits, indicating that probiotic viability is not always necessary for exhibiting health benefits.
Design/methodology/approach
Attempt has been made to review the literature on the status of probiotic foods available in the world market, their impact on the gut flora and the various factors affecting their viability. Both review and research papers related to efficacy of inactivated, killed or dead probiotic cells towards health benefits have been considered. Keywords used for data search included efficacy of viable or killed, inactivated probiotic cells.
Findings
The reviewed literature indicated that inactivated, killed or dead probiotic cells also possess functional properties but live cells are more efficacious. All live probiotic cultures are not equally efficacious, and accordingly, dead or inactivated cells did not demonstrate functional properties to extend health benefits to all diseases.
Originality/value
Capability of non-viable microorganisms to confer health benefits may attract food manufacturers owing to certain advantages over live probiotics such as longer shelf-life, handling and transportation and reduced requirements for refrigerated storage and inclusion of non-bacterial, biologically active metabolites present in fermented milks’ fraction as dried powders to food matrixes may result in the development of new functional foods.
Collapse
|
32
|
Neuroprotective effect of Ruminococcus albus on oxidatively stressed SH-SY5Y cells and animals. Sci Rep 2017; 7:14520. [PMID: 29109537 PMCID: PMC5674049 DOI: 10.1038/s41598-017-15163-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 10/23/2017] [Indexed: 01/13/2023] Open
Abstract
Recent evidence shows that the gut microbiota has an important role in gut-brain crosstalk and is linked to neuronal disorders. The aim of this study was to investigate the effects of intestinal Ruminococcus albus with probiotic potential on neuroprotection in oxidatively stressed SH-SY5Y neuroblastoma cells and animals. To investigate these effects, conditioned medium was prepared using Caco-2 cells cultured with heat-killed R. albus (CRA-CM). Caco-2 cells cultured with heat-killed R. albus showed increased BDNF expression and BDNF protein levels increased in CRA-CM. CRA-CM up-regulated the protein expression levels of SRF, C-fos and CDK2. In addition, CRA-CM protected SH-SY5Y cells from H2O2-induced cell death. CRA-CM significantly decreased the Bax/Bcl-2 ratio in oxidatively stressed SH-SY5Y cells. Animal experiments showed that oral administration of heat-killed R. albus for 15 days attenuated the oxidative stress induced by sodium arsenate. Treatment with heat-killed R. albus reduced the level of ROS, and the levels of SOD and GSH increased in oxidatively stressed brains. In conclusion, the secretome prepared from Caco-2 cells cultured with heat-killed R. albus might promote neuronal proliferation through the activation of cell proliferation-related proteins, and heat-killed R. albus protects neurons from oxidative damage by reducing ROS levels and increasing SOD and GSH levels.
Collapse
|
33
|
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.
Collapse
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.
| |
Collapse
|
34
|
Zelaya H, Alvarez S, Kitazawa H, Villena J. Respiratory Antiviral Immunity and Immunobiotics: Beneficial Effects on Inflammation-Coagulation Interaction during Influenza Virus Infection. Front Immunol 2016; 7:633. [PMID: 28066442 PMCID: PMC5179578 DOI: 10.3389/fimmu.2016.00633] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/12/2016] [Indexed: 12/12/2022] Open
Abstract
Influenza virus (IFV) is a major respiratory pathogen of global importance, and the cause of a high degree of morbidity and mortality, especially in high-risk populations such as infants, elderly, and immunocompromised hosts. Given its high capacity to change antigenically, acquired immunity is often not effective to limit IFV infection and therefore vaccination must be constantly redesigned to achieve effective protection. Improvement of respiratory and systemic innate immune mechanisms has been proposed to reduce the incidence and severity of IFV disease. In the last decade, several research works have demonstrated that microbes with the capacity to modulate the mucosal immune system (immunobiotics) are a potential alternative to beneficially modulate the outcome of IFV infection. This review provides an update of the current status on the modulation of respiratory immunity by orally and nasally administered immunobiotics, and their beneficial impact on IFV clearance and inflammatory-mediated lung tissue damage. In particular, we describe the research of our group that investigated the influence of immunobiotics on inflammation–coagulation interactions during IFV infection. Studies have clearly demonstrated that hostile inflammation is accompanied by dysfunctional coagulation in respiratory IFV disease, and our investigations have proved that some immunobiotic strains are able to reduce viral disease severity through their capacity to modulate the immune-coagulative responses in the respiratory tract.
Collapse
Affiliation(s)
- Hortensia Zelaya
- Immunobiotics Research Group, Tucuman, Argentina; Institute of Applied Biochemistry, National University of Tucuman, Tucuman, Argentina
| | - Susana Alvarez
- Immunobiotics Research Group, Tucuman, Argentina; Institute of Applied Biochemistry, National University of Tucuman, Tucuman, Argentina; Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman, Argentina
| | - Haruki Kitazawa
- Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan; Livestock Immunology Unit, International Education and Research Center for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Julio Villena
- Immunobiotics Research Group, Tucuman, Argentina; Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman, Argentina; Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| |
Collapse
|
35
|
Chen MF, Shih SR. Motor coordination and balance measurements reveal differential pathogenicity of currently spreading enterovirus 71 strains in human SCARB2 transgenic mice. J Gen Virol 2016; 97:3243-3247. [PMID: 27902385 DOI: 10.1099/jgv.0.000640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Enterovirus 71 (EV71) has caused large-scale epidemics with neurological complications in the Asia-Pacific region. The C4a and B5 strains are the two major genotypes circulating in many countries recently. This study used a new protocol, a motor coordination task, to assess the differential pathogenicity of C4a and B5 strains in human SCARB2 transgenic mice. We found that the pathogenicity of C4a viruses was more severe than that of B5 viruses. Moreover, we discovered that an increased level of monocyte chemoattractant protein-1 was positively correlated with severely deficient motor function. This study provides a new method for evaluating EV71 infection in mice and distinguishing the severity of the symptoms caused by different clinical strains, which would contribute to studies of pathogenesis and development of vaccines and antivirals in EV71 infections.
Collapse
Affiliation(s)
- Mei-Feng Chen
- Research Center for Emerging Viral Infections, Chang Gung University, Tao-Yuan, Taiwan, ROC
| | - Shin-Ru Shih
- Clinical Virology Laboratory, Department of Laboratory Medicine, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan, ROC
- Graduate Institute of Biomedical Sciences, Chang Gung University, Tao-Yuan, Taiwan, ROC
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan, ROC
- Research Center for Emerging Viral Infections, Chang Gung University, Tao-Yuan, Taiwan, ROC
| |
Collapse
|