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Magalhães J, Cappellozza BI, Dos Santos TC, Inoe F, Pessoa Araújo Júnior J, Kurissio JK, Queiroz O, Joergensen JN, Cooke RF, Vasconcelos CGC, Vasconcelos JLM. Effects of supplementing direct-fed microbials on health and growth of preweaning Gyr × Holstein dairy calves. J Dairy Sci 2024; 107:6117-6130. [PMID: 38608942 DOI: 10.3168/jds.2023-24434] [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: 11/15/2023] [Accepted: 03/04/2024] [Indexed: 04/14/2024]
Abstract
This study aimed to evaluate the effects of direct-fed microbials (DFM) on health and growth responses of preweaning Bos indicus × Bos taurus (Gyr × Holstein) crossbred calves. Ninety newborn heifer calves (initial BW of 35 ± 4.0 kg) were used. At birth, calves were ranked by initial BW and parity of the dam and assigned to: (1) whole milk without DFM supplementation (CON; n = 30), (2) whole milk with the addition of 1.0 g/calf per day of a Bacillus-based DFM (BAC; n = 30), or (3) whole milk with the addition of 1.0 g/calf per day of BAC and 1.2 g/calf per day of Enterococcus faecium 669 (MIX; n = 30). Milk was fed individually during the study (77 d), and the BAC and MIX treatments were offered daily throughout the 77-d preweaning period. All calves were offered a starter supplement and corn silage starting on d 1 and 60 of age, respectively. Milk and starter supplement intake were evaluated daily, and BW was recorded on d 0 and at weaning (d 77). Diarrhea and pneumonia were assessed daily, and fecal samples were collected on d 0, 7, 14, 21, and at weaning (d 77) for assessment of the presence of bacterial and protozoal pathogens via qPCR. All data were analyzed using SAS (v. 9.4) with calf as the experimental unit and using single-df orthogonal contrasts (BAC + MIX vs. CON; BAC vs. MIX). Daily feeding of DFM, regardless of type, improved weaning BW. Odds ratio for occurrence of pneumonia was lower for DFM-supplemented calves, but its occurrence did not differ between BAC and MIX calves. No Salmonella spp. or Escherichia coli F41 were detected in any of the calves. The proportion of calves positive for E. coli F17 was greater for DFM calves on d 7 (92% and 96% vs. 81% for BAC, MIX, and CON, respectively), on d 21 (13% and 26% vs. 7% for BAC, MIX, and CON, respectively), and at weaning (48% and 35% vs. 22% for BAC, MIX, and CON, respectively). For Clostridium difficile, more DFM calves were positive on d 7 (65% and 30% vs. 35% for BAC, MIX, and CON, respectively) and 14 (20% and 28% vs. 7% for BAC, MIX, and CON, respectively), but proportion of positive calves was also greater for BAC versus MIX on d 7. More CON calves were positive for Clostridium perfringens on d 14 (14% vs. 3% and 8% for CON, BAC, and MIX, respectively) compared with DFM-fed calves. Incidence of calves positive for C. perfringens was greater in BAC than MIX on d 7 (50% vs. 18%), and greater for MIX than BAC at weaning (9% vs. 0%). For protozoa occurrence, a lower proportion of DFM calves were positive for Cryptosporidium spp. on d 7 (58% and 48% vs. 76% for BAC, MIX, and CON, respectively), but opposite results were observed on d 21 for Cryptosporidium spp. (3% and 11% vs. 0% for BAC, MIX, and CON, respectively) and Eimeria spp. on d 14 (7% and 8% vs. 0% for BAC, MIX, and CON, respectively) and 21 (50% and 59% vs. 38% for BAC, MIX, and CON, respectively). In summary, DFM feeding alleviated the occurrence of pneumonia and improved growth rates, while also modulating the prevalence of bacteria and protozoa in preweaning Gyr × Holstein calves.
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Affiliation(s)
- Julia Magalhães
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18618-000, Brazil
| | - Bruno I Cappellozza
- Commercial Development, Animal & Plant Health and Nutrition, Chr. Hansen A/S, Hørsholm 2970, Denmark
| | - Taynara C Dos Santos
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18618-000, Brazil
| | - Fernanda Inoe
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18618-000, Brazil
| | - João Pessoa Araújo Júnior
- Institute of Biotechnology (IBTEC), School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18607-440, Brazil
| | - Jacqueline K Kurissio
- Institute of Biotechnology (IBTEC), School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18607-440, Brazil
| | - Oscar Queiroz
- Commercial Development, Animal & Plant Health and Nutrition, Chr. Hansen A/S, Hørsholm 2970, Denmark
| | - Jens N Joergensen
- Commercial Development, Animal & Plant Health and Nutrition, Chr. Hansen A/S, Hørsholm 2970, Denmark
| | - Reinaldo F Cooke
- Department of Animal Science, Texas A&M University, College Station, TX 77843
| | | | - José Luiz M Vasconcelos
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP 18618-000, Brazil.
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Lin YT, Hung YC, Chen LH, Lee KT, Han YS. Effects of adding Bacillus subtilis natto NTU-18 in paste feed on growth, intestinal morphology, gastrointestinal microbiota diversity, immunity, and disease resistance of Anguilla japonica glass eels. FISH & SHELLFISH IMMUNOLOGY 2024; 149:109556. [PMID: 38608848 DOI: 10.1016/j.fsi.2024.109556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/06/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
Japanese eel, Anguilla japonica, holds significant importance in Taiwanese aquaculture. With the intensification of eel farming, the impact of Edwardsiella tarda has become increasingly severe. Consequently, the abusive use of antibiotics has risen. Bacillus subtilis natto NTU-18, a strain of Bacillus with a high survival rate in feed processing, plays a crucial role in promoting intestinal health through competitive rejection, enhancing immune responses against bacterial pathogens, and improving intestinal health by modulating gastrointestinal microbiota to produce beneficial metabolites of mice and grass carp, Ctenopharyngodon idella. This study investigated the effects of different proportions (control, 0.25 %, 0.5 %, 1 %, and 2 %) of B. subtilis natto NTU-18 added to paste feed on the growth performance, intestinal morphology, and microbiota, expression of immune-related genes, and resistance to E. tarda in Japanese glass eel. The results indicated that the growth performance of all groups with B. subtilis natto NTU-18 added was significantly higher than that of the control group and did not impact the villi morphology. The expression of immune-related genes in the kidney, specifically HSP70 and SOD, was significantly higher from 0.5 % and above than the control; however, no significant differences were observed in CAT, POD, and HSP90. In the liver, significant differences were found in HSP70 and IgM above 0.25 % compared to the control group, with no significant differences in SOD, CAT, POD, and HSP90 among all groups. Additionally, intestinal microbiota analysis revealed that the 2 % additional group had significantly lower diversity than other groups, with Cetobacterium as the dominant species. The challenge test observed that the survival rates of the 0.5 % and 1 % groups were significantly higher. This research suggests that adding 0.5 % and 1 % of B. subtilis natto NTU-18 to the diet is beneficial for Japanese glass eel's immunity, growth performance, and disease resistance.
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Affiliation(s)
- Yen-Ting Lin
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Chen Hung
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Li-Han Chen
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Kung-Ta Lee
- Department of Biochemical Science & Technology, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-San Han
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan.
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Jiang B, Huang J. Influences of bacterial extracellular vesicles on macrophage immune functions. Front Cell Infect Microbiol 2024; 14:1411196. [PMID: 38873097 PMCID: PMC11169721 DOI: 10.3389/fcimb.2024.1411196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/20/2024] [Indexed: 06/15/2024] Open
Abstract
Bacterial extracellular vesicles (EVs) are crucial mediators of information transfer between bacteria and host cells. Macrophages, as key effector cells in the innate immune system, have garnered widespread attention for their interactions with bacterial EVs. Increasing evidence indicates that bacterial EVs can be internalized by macrophages through multiple pathways, thereby influencing their immune functions. These functions include inflammatory responses, antimicrobial activity, antigen presentation, and programmed cell death. Therefore, this review summarizes current research on the interactions between bacterial EVs and macrophages. This will aid in the deeper understanding of immune modulation mediated by pathogenic microorganisms and provide a basis for developing novel antibacterial therapeutic strategies.
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Affiliation(s)
- Bowei Jiang
- The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China
| | - Junyun Huang
- Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
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Wilson SM, Kang Y, Marshall K, Swanson KS. Effects of dietary fiber and biotic supplementation on apparent total tract macronutrient digestibility and the fecal characteristics, metabolites, and microbiota of healthy adult dogs. J Anim Sci 2024; 102:skae138. [PMID: 38783711 PMCID: PMC11161905 DOI: 10.1093/jas/skae138] [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: 01/20/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
Dietary fibers and biotics have been shown to support gastrointestinal health in dogs, but are usually tested individually. There is value in testing fiber-biotic combinations that are commonly used commercially. Therefore, this study was conducted to determine the apparent total tract macronutrient digestibility (ATTD) of diets supplemented with fibers or biotics and to evaluate their effects on the fecal characteristics, metabolites, microbiota, and immunoglobulin A (IgA) concentrations of dogs. Twelve healthy adult female beagle dogs (age = 6.2 ± 1.6 yr; body weight = 9.5 ± 1.1 kg) were used in a replicated 3 × 3 Latin square design to test three treatments: 1) control diet based on rice, chicken meal, tapioca starch, and cellulose + a placebo treat (CT); 2) diet based on rice, chicken meal, garbanzo beans, and cellulose + a placebo treat (GB); 3) diet based on rice, chicken meal, garbanzo beans, and a functional fiber/prebiotic blend + a probiotic-containing treat (GBPP). In each 28-d period, a 22-d diet adaptation was followed by a 5-d fecal collection phase. Fasted blood samples were collected on day 28. Data were analyzed using the Mixed Models procedure of SAS 9.4, with P < 0.05 being significant and P < 0.10 being trends. ATTD of dry matter (DM), organic matter, and energy were lower (P < 0.001) and DM fecal output was higher (P < 0.01) in dogs fed GBPP than CT or GB, whereas ATTD of crude protein was higher (P < 0.001) in dogs fed CT and GBPP than GB. ATTD of fat was higher (P < 0.001) and wet fecal output was lower (P < 0.01) in dogs fed CT than GB or GBPP. Fecal DM% was higher (P < 0.001) in dogs fed CT than GBPP or GB, and higher in dogs fed GBPP than GB. Fecal short-chain fatty acid concentrations were higher (P < 0.001) in dogs fed GB than CT or GBPP, and higher in dogs fed GB than GBPP. Fecal IgA concentrations were higher (P < 0.01) in dogs fed GB than CT. Fecal microbiota populations were affected by diet, with alpha diversity being higher (P < 0.01) in dogs fed GB than CT, and beta diversity shifting following dietary fiber and biotic supplementation. The relative abundance of 24 bacterial genera was altered in dogs fed GB or GBPP than CT. Serum triglyceride concentrations were lower in dogs fed GB than GBPP or CT. Our results demonstrate that legume-based dietary fibers, with or without prebiotics and probiotics, reduce ATTD, increase stool output, beneficially shift fecal metabolites and microbiota, and reduce blood lipids in adult dogs.
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Affiliation(s)
- Sofia M Wilson
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Yifei Kang
- The Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | | | - Kelly S Swanson
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Department of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
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Liu S, Xiao G, Wang Q, Zhang Q, Tian J, Li W, Gong L. Effects of Dietary Bacillus subtilis HC6 on Growth Performance, Antioxidant Capacity, Immunity, and Intestinal Health in Broilers. Animals (Basel) 2023; 13:2915. [PMID: 37760314 PMCID: PMC10526030 DOI: 10.3390/ani13182915] [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: 07/30/2023] [Revised: 08/31/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
This study aimed to investigate the impact of Bacillus subtilis HC6 on the growth performance, immunity, antioxidant capacity, and intestinal health of broilers. A total of 180 one-day-old white feather broilers were randomly divided into two experimental groups, each comprising six replicates of fifteen chicks from 1 to 50 d of age. The groups were either fed a basal diet (CON) or the same diet supplemented with 5 × 108 cfu/kg of Bacillus subtilis HC6 (BS). Our results indicated that compared with the CON, dietary supplementation with BS increased feed efficiency during d 21-50 and d 1-50 (p < 0.05). Moreover, BS supplementation enhanced antioxidant capacity in the serum and liver, and also decreased the activity of diamine oxidase and the level of endotoxins (p < 0.05). Additionally, BS treatment increased the villi height in the jejunum and ileum, increased the ratio of villus height/crypt depth in the ileum, upregulated the expression of tight junction proteins in the jejunal mucosa, and downregulated the levels of IL-22 and IFN-γ on day 50 (p < 0.05). Principal coordinates analysis yielded clear clustering of two groups; dietary BS increased the relative abundance of Bacteroidales_unclassified (genus) and Olsenella (genus), and decreased the abundance of genera Alistipes on day 50, which identified a strong correlation with FCR, serum differential metabolites, or differential gene expression in the jejunal mucosa by spearman correlation analysis. The PICRUSt2 analysis revealed that supplementation with BS enriched the pathways related to xenobiotics biodegradation and metabolism, carbohydrate metabolism, energy metabolism, signaling molecules and interaction, the digestive system, and transport and catabolism. These results demonstrated that dietary BS increased feed efficiency, antioxidant capacity, and the mRNA expression of pro-inflammatory cytokines in the jejunal mucosa; and decreased the activity of diamine oxidase in serum, which might be attributed to the modulation of community composition and the functions of cecal microbiota in white-feathered broilers.
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Affiliation(s)
- Shun Liu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (S.L.); (G.X.); (Q.Z.); (J.T.)
| | - Gengsheng Xiao
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (S.L.); (G.X.); (Q.Z.); (J.T.)
| | - Qi Wang
- College of Animal Science, Zhejiang University, Hangzhou 310058, China; (Q.W.); (W.L.)
| | - Qingyang Zhang
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (S.L.); (G.X.); (Q.Z.); (J.T.)
| | - Jinpeng Tian
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (S.L.); (G.X.); (Q.Z.); (J.T.)
| | - Weifen Li
- College of Animal Science, Zhejiang University, Hangzhou 310058, China; (Q.W.); (W.L.)
| | - Li Gong
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (S.L.); (G.X.); (Q.Z.); (J.T.)
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Li M, Zhao X, Liu B, Zhao Y, Li X, Ma Z, Yang Q. Predictors of rapidly progressive interstitial lung disease and prognosis in Chinese patients with anti-melanoma differentiation-associated gene 5-positive dermatomyositis. Front Immunol 2023; 14:1209282. [PMID: 37691917 PMCID: PMC10483132 DOI: 10.3389/fimmu.2023.1209282] [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: 04/20/2023] [Accepted: 08/08/2023] [Indexed: 09/12/2023] Open
Abstract
Background Rapidly progressive interstitial lung disease (RP-ILD) is the most serious complication of anti-melanoma differentiation-associated gene 5-positive dermatomyositis (anti-MDA5+ DM). This study was performed to assess the prognostic factors of patients with anti-MDA5+ DM and the clinical characteristics and predictors of anti-MDA5+ DM in combination with RP-ILD. Methods In total, 73 MDA5+ DM patients were enrolled in this study from March 2017 to December 2021. They were divided into survival and non-survival subgroups and non-RP-ILD and RP-ILD subgroups. Results The lactate dehydrogenase (LDH) concentration and prognostic nutritional index (PNI) were independent prognostic factors in patients with anti-MDA5+ DM: the elevated LDH was associated with increased mortality (p = 0.01), whereas the elevated PNI was associated with reduced mortality (p < 0.001). The elevated LDH was independent risk prognostic factor for patients with anti-MDA5+ DM (HR 2.42, 95% CI: 1.02-4.83, p = 0.039), and the elevated PNI was independent protective prognostic factor (HR, 0.27; 95% CI, 0.08 - 0.94; p = 0.039). Patients who had anti-MDA5+ DM with RP-ILD had a significantly higher white blood cell count and LDH concentration than those without RP-ILD (p = 0.007 and p = 0.019, respectively). In contrast, PNI was significantly lower in patients with RP-ILD than those without RP-ILD (p < 0.001). The white blood cell count and elevated LDH were independent and significant risk factors for RP-ILD (OR 1.54, 95% CI: 1.12 - 2.13, p = 0.009 and OR 8.68, 95% CI: 1.28 - 58.83, p = 0.027, respectively), whereas the lymphocyte was an independent protective factor (OR, 0.11; 95% CI, 0.01 - 0.81; p = 0.03). Conclusion The elevated LDH and elevated PNI were independent prognostic factors for patients with anti-MDA5+ DM. The elevated LDH was independent risk factor for RP-ILD. Patients with anti-MDA5+ DM could benefit from the measurement of LDH and PNI, which are inexpensive and simple parameters that could be used for diagnosis as well as prediction of the extent of lung involvement and prognosis.
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Affiliation(s)
- Meiqi Li
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xuli Zhao
- Department of Pain Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Baocheng Liu
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yaqi Zhao
- Department of Rheumatology and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xinya Li
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhenzhen Ma
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Department of Rheumatology and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Qingrui Yang
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Department of Rheumatology and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Jia D, Cai J, Yao F, Zhu P, Xu X, Qi Y, Wang H. Effect of Bacillus Subtilis on Immune Function of Hd11 Chicken Macrophages. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2023. [DOI: 10.1590/1806-9061-2022-1641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- D Jia
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - J Cai
- Yangzhou University, P.R.China
| | - F Yao
- Yangzhou University, P.R.China
| | - P Zhu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China; Yangzhou University, P.R.China
| | - X Xu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - Y Qi
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - H Wang
- Yangzhou University, P.R.China
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Elleithy EMM, Bawish BM, Kamel S, Ismael E, Bashir DW, Hamza D, Fahmy KNED. Influence of dietary Bacillus coagulans and/or Bacillus licheniformis-based probiotics on performance, gut health, gene expression, and litter quality of broiler chickens. Trop Anim Health Prod 2023; 55:38. [PMID: 36640209 PMCID: PMC9840593 DOI: 10.1007/s11250-023-03453-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
Probiotics are non-pathogenic microorganisms that are potentially important non-antibiotic alternatives. This study aimed to compare novel multi-strain and single-strain Bacillus probiotics and their respective influences on broiler chickens' performance, gut health, litter quality, immune response, and NBN and TLR gene expression. A total of 1200 Arbor-Acres 1-day-old broiler chicks were randomly allocated into three treatments (T1 was a control, T2 was supplemented with a combined Bacillus coagulans (2 × 109 cfu/g) and Bacillus licheniformis (8 × 109 cfu/g) probiotic strains (0.2 kg/ton of feed), and T3 was supplemented with Bacillus licheniformis (3.2 × 109 cfu/g) probiotic (0.5 kg/ton of feed) with eight replicas of each. Supplementing the broiler diet with either the single-strain (T3) or the multi-strain (T2) Bacillus-based probiotic raised the overall birds' body weight, body weight gain, feed conversion ratio, and European production efficiency factor compared to the control (T1), with a significant enhancement achieved by the multi-strain Bacillus product (P = 0.005). T2 and T3 exhibited significantly improved cholesterol, Alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, and alkaline phosphatase levels than the control (P ≤ 0.05). The transcript levels of both NBN and TLR genes were upregulated in the liver in the T2 and T3 groups. The T2 group experienced significant reductions in gut bacterial counts, especially for Clostridia, and recorded the lowest litter moisture and nitrogen. In conclusion, supplementing broiler diets with probiotics of multiple Bacillus strains increased production profitability by promoting bird growth, improving feed intake, enhancing gut mucosa and immune organs, and upregulating genes responsible for immunity. All these inhibit the overgrowth of enteric pathogens and sustain litter quality.
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Affiliation(s)
- Ebtihal M M Elleithy
- Department of Cytology and Histology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Basma M Bawish
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Shaimaa Kamel
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Elshaimaa Ismael
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Dina W Bashir
- Department of Cytology and Histology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Dalia Hamza
- Department of Zoonoses, Faculty of Veterinary Medicine, Cairo University, PO Box 12211, Giza, 12211, Egypt.
| | - Khaled Nasr El-Din Fahmy
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
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Qiao Y, Zhang K, Zhang Z, Zhang C, Sun Y, Feng Z. Fermented soybean foods: A review of their functional components, mechanism of action and factors influencing their health benefits. Food Res Int 2022; 158:111575. [PMID: 35840260 DOI: 10.1016/j.foodres.2022.111575] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 11/27/2022]
Abstract
After thousands of years of evolution and development, traditional fermented soybean foods, with their unique charm, have gained a stable place in the global market. With the explosive development of modern biological technologies, some traditional fermented soybean foods that possess health-promoting benefits are gradually appearing. Physiologically active substances in fermented soybean foods have received extensive attention in recent decades. This review addresses the potential health benefits of several representative fermented soybean foods, as well as the action mechanism and influencing factors of their functional components. Phenolic compounds, low-molecular-weight peptides, melanoidins, furanones and 3-hydroxyanthranilic acid are the antioxidative components predominantly found in fermented soybean foods. Angiotensin I-converting enzyme inhibitory peptides and γ-aminobutyric acid isolated from fermented soy foods provide potential selectivity for hypertension therapy. The potential anti-inflammatory bioactive components in fermented soybean foods include γ-linolenic acid, butyric acid, soy sauce polysaccharides, 2S albumin and isoflavone glycones. Deoxynojirimycin, genistein, and betaine possess high activity against α-glucosidase. Additionally, fermented soybean foods contain neuroprotective constituents, including indole alkaloids, nattokinase, arbutin, and isoflavone vitamin B12. The anticancer activities of fermented soybean foods are associated with surfactin, isolavone, furanones, trypsin inhibitors, and 3-hydroxyanthranilic acid. Nattokinase is highly correlated with antioxidant activity. And a high level of menaquinones-7 is linked to protection against neurodegenerative diseases. Sufficiently recognizing and exploiting the health benefits and functional components of traditional fermented soybean foods could provide a new strategy in the development of the food fermentation industry.
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Affiliation(s)
- Yali Qiao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, No.600, Changjiang Road, Harbin 150030, China
| | - Kenan Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, No.600, Changjiang Road, Harbin 150030, China
| | - Zongcai Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, No.600, Changjiang Road, Harbin 150030, China
| | - Chao Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, No.600, Changjiang Road, Harbin 150030, China
| | - Yan Sun
- Heilongjiang Tobacco Industry Co., Ltd. Harbin Cigarette Factory, Harbin 150027, China
| | - Zhen Feng
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, No.600, Changjiang Road, Harbin 150030, China; Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, China.
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Lewton JR, Woodward AD, Moser RL, Thelen KM, Moeser AJ, Trottier NL, Tempelman RJ, Rozeboom DW. Effects of a multi-strain Bacillus subtilis-based direct-fed microbial on immunity markers and intestinal morphology in diets fed to weanling pigs. Transl Anim Sci 2022; 6:txac083. [PMID: 35854968 PMCID: PMC9278820 DOI: 10.1093/tas/txac083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/16/2022] [Indexed: 11/22/2022] Open
Abstract
The objective of this experiment was to evaluate the effects of a multi-strain Bacillus subtilis-based direct-fed microbial (DFM) on nursery pig health as indicated by intestinal mucosal and blood plasma immunological markers and intestinal morphology. Eighty pigs, of equal number of barrows and gilts (initial BW: 7.0 ± 0.60 kg), weaned at 21 ± 1 d of age were randomly allotted to sixteen pens, with five pigs per pen. Two dietary treatments were implemented, a basal control (CON) and a basal control plus DFM (CDFM). Both diets were corn, soybean meal, and distillers dried grains based and were formulated to meet or exceed all nutritional requirements (NRC, 2012) and manufactured on site. Diets were fed for 42 d. On d 21 and 42 of the experiment, one pig per pen was randomly selected and euthanized, with equal number of males and females represented. Blood samples were collected prior to euthanasia for assessment of plasma concentrations of immunoglobulin A (IgA) and intestinal fatty acid binding protein. Segments of the gastrointestinal tract including duodenum, jejunum, ileum, ascending and distal colon were removed for analysis of intestinal morphology, and levels of interleukin 6, interleukin 10 (IL-10), and tumor necrosis factor alpha. Jejunal villus height was greater in the CDFM pigs as compared with CON pigs (P = 0.02) and ascending colon crypt depth tended to be greater on d 21 (P = 0.10). Compared to CON, CDFM significantly increased overall plasma IgA (P = 0.03) (0.58 vs. 0.73 0.05 mg/mL, respectively), while it tended to increase plasma IgA (P = 0.06) on d 21 (0.34 vs. 0.54 ± 0.07 mg/mL, respectively) and tended to increase overall IL-10 (P = 0.10) in the jejunum (113 vs. 195 ± 35 pg/mL, respectively). Addition of a multi-strain Bacillus subtilis-based DFM may have an early benefit to nursery pig health status, observed through specific changes in morphology and both systemic and localized immunological markers.
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Affiliation(s)
- Jaron R Lewton
- Department of Animal Science, Michigan State University , East Lansing, MI 48824 , USA
| | | | | | - Kyan M Thelen
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University , East Lansing, MI 48824 , USA
| | - Adam J Moeser
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University , East Lansing, MI 48824 , USA
| | - Nathalie L Trottier
- Department of Animal Science, Cornell University , Ithaca, NY 14853 , Greece
| | - Robert J Tempelman
- Department of Animal Science, Michigan State University , East Lansing, MI 48824 , USA
| | - Dale W Rozeboom
- Department of Animal Science, Michigan State University , East Lansing, MI 48824 , USA
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11
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Ogbuewu IP, Mabelebele M, Sebola NA, Mbajiorgu C. Bacillus Probiotics as Alternatives to In-feed Antibiotics and Its Influence on Growth, Serum Chemistry, Antioxidant Status, Intestinal Histomorphology, and Lesion Scores in Disease-Challenged Broiler Chickens. Front Vet Sci 2022; 9:876725. [PMID: 35573393 PMCID: PMC9096611 DOI: 10.3389/fvets.2022.876725] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/04/2022] [Indexed: 11/23/2022] Open
Abstract
In commercial poultry production, chickens are reared under intensive conditions, which may allow infections to spread quickly. Antibiotics are used at sub-therapeutic doses in livestock and poultry feed to prevent diseases and improve productivity. However, restrictions on the use of antibiotics at sub-therapeutic concentrations in livestock feed due to growing concerns of antimicrobial resistance (AMR), together with antibiotic residues in meat and eggs has prompted poultry researchers and feed producers to look for viable alternatives. Thus, there is increasing interest in developing natural alternatives to in-feed antibiotics to improve chicken productivity and health. Probiotics, specifically from the genus Bacillus have proven to be effective due to their spore-forming capabilities. Furthermore, their ability to withstand heat during feed processing and be stored for a long time without losing viability as well as their potential to function in the acidic medium of the chicken gut, provide them with several advantages over conventional probiotics. Several studies regarding the antimicrobial and antioxidant activities of Bacillus probiotics and their positive impact in chicken nutrition have been documented. Therefore, the present review shields light on the positive effect of Bacillus probiotics as alternatives to in-feed antibiotics on growth performance, serum chemistry, antioxidant status, intestinal histomorphology and lesion scores of disease-challenged broiler chickens and the mechanisms by which they exert their actions. It is concluded that Bacillus probiotics supplementation improve growth, health and productive indices of disease-challenged broiler chickens and can be a good alternative to in-feed antibiotics. However, more studies are required on the effect of Bacillus probiotics supplementation in broiler chickens to maximize productivity and achieve the ultimate goal of stopping the usage of antibiotics at sub-therapeutic doses in broiler chicken feed to enhance performance.
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Affiliation(s)
- Ifeanyi Princewill Ogbuewu
- Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa
- Department of Animal Science and Technology, Federal University of Technology, Owerri, Nigeria
| | - Monnye Mabelebele
- Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa
| | | | - Christian Mbajiorgu
- Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa
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12
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Luise D, Bosi P, Raff L, Amatucci L, Virdis S, Trevisi P. Bacillus spp. Probiotic Strains as a Potential Tool for Limiting the Use of Antibiotics, and Improving the Growth and Health of Pigs and Chickens. Front Microbiol 2022; 13:801827. [PMID: 35197953 PMCID: PMC8859173 DOI: 10.3389/fmicb.2022.801827] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/14/2022] [Indexed: 01/20/2023] Open
Abstract
The pressure to increasingly optimize the breeding of livestock monogastric animals resulted in antimicrobials often being misused in an attempt to improve growth performance and counteract diseases in these animals, leading to an increase in the problem of antibiotic resistance. To tackle this problem, the use of probiotics, also known as direct in-feed microbials (DFM), seems to be one of the most promising strategies. Among probiotics, the interest in Bacillus strains has been intensively increased in recent decades in pigs and poultry. The aim of the present review was to evaluate the effectiveness of Bacillus strains as probiotics and as a potential strategy for reducing the misuse of antibiotics in monogastric animals. Thus, the potential modes of action, and the effects on the performance and health of pigs (weaning pigs, lactation and gestation sows) and broilers are discussed. These searches yielded 131 articles (published before January 2021). The present review showed that Bacillus strains could favor growth in terms of the average daily gain (ADG) of post-weaning piglets and broilers, and reduce the incidence of post-weaning diarrhea in pigs by 30% and mortality in broilers by 6-8%. The benefits of Bacillus strains on these parameters showed results comparable to the benefit obtained by the use of antibiotics. Furthermore, the use of Bacillus strains gives promising results in enhancing the local adaptative immune response and in reducing the oxidative stress of broilers. Fewer data were available regarding the effect on sows. Discordant effects have been reported regarding the effect on body weight (BW) and feed intake while a number of studies have supported the hypothesis that feeding probiotics to sows could benefit their reproductive performance, namely the BW and ADG of the litters. Taken all the above-mentioned facts together, this review confirmed the effectiveness of Bacillus strains as probiotics in young pigs and broilers, favoring their health and contributing to a reduction in the misuse of direct in-feed antibiotics. The continuous development and research regarding probiotics will support a decrease in the misuse of antibiotics in livestock production in order to endorse a more sustainable rearing system in the near future.
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Affiliation(s)
- Diana Luise
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Paolo Bosi
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Lena Raff
- Chr. Hansen, Animal Health and Nutrition, Hørsholm, Denmark
| | - Laura Amatucci
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Sara Virdis
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Paolo Trevisi
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
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13
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Tobita K, Meguro R. Bacillus subtilis BN strain promotes Th1 response via Toll-like receptor 2 in polarized mouse M1 macrophage. J Food Biochem 2022; 46:e14046. [PMID: 34997586 DOI: 10.1111/jfbc.14046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 11/07/2021] [Accepted: 12/09/2021] [Indexed: 12/20/2022]
Abstract
Bacillus subtilis BN strain (BN strain) was isolated from natto, a traditional Japanese fermented soybean food product. The present study investigated the Th1 responses of the BN strain on a mouse macrophage cell line, J774.1. In cell cultures, the BN strain (spore cell cultured in Schaeffer's sporulation media) significantly increased the production of interleukin (IL-)12 protein. The BN strain induced the mRNA expression of M1 polarization genes, such as inducible nitric oxide synthase and IL-12p40 mRNA, and suppressed the mRNA expression of intracellular marker genes of M2 polarization, such as arginase 1 mRNA. The BN strain downregulated the mRNA expression of Toll-like receptor 4 (TLR4), while it upregulated the mRNA expression of TLR2, MyD88, and nuclear factor kappa B (NF-κB). The production of IL-12 protein induced by the BN strain was decreased by inhibitors of MyD88, NF-κB, and IκB kinase. Moreover, the production of IL-12 was strongly suppressed by neutralizing antibody against TLR2. These results suggest that the BN strain promotes Th1 response via TLR2 signal in mouse M1 macrophage. PRACTICAL APPLICATIONS: Bacillus subtilis is known to have beneficial effects for the host. B. subtilis BN stain (BN strain) was isolated from natto, a traditional Japanese fermented soybean food product. The effects of the BN strain on the Th1 response in macrophage cell cultures were investigated in this work. We found that the spore cells of BN strain promoted the production of Th1-type cytokine, and induced macrophage M1 polarization via Toll-like receptor 2. This study can serve as a significant reference for the development of functional food and feed with immunostimulatory effects. Over time, new food and feed products containing the BN strain may emerge, such as Juice, powder, and tablet.
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Affiliation(s)
- Keisuke Tobita
- Industrial Technology Innovation Center of Ibaraki Prefecture, Nagaoka, Japan
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14
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A Review of the Effects and Production of Spore-Forming Probiotics for Poultry. Animals (Basel) 2021; 11:ani11071941. [PMID: 34209794 PMCID: PMC8300232 DOI: 10.3390/ani11071941] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Spore-forming probiotics are widely used in the poultry industry for their beneficial impact on host health. The main feature that separates spore-forming probiotics from the more common lactic acid probiotics is their high resistance to external and internal factors, resulting in higher viability in the host and correspondingly, greater efficiency. Their most important effect is the ability to confront pathogens, which makes them a perfect substitute for antibiotics. In this review, we cover and discuss the interactions of spore-forming probiotic bacteria with poultry as the host, their health promotion effects and mechanisms of action, impact on poultry productivity parameters, and ways to manufacture the probiotic formulation. The key focus of this review is the lack of reproducibility in poultry research studies on the evaluation of probiotics’ effects, which should be solved by developing and publishing a set of standard protocols in the professional community for conducting probiotic trials in poultry. Abstract One of the main problems in the poultry industry is the search for a viable replacement for antibiotic growth promoters. This issue requires a “one health” approach because the uncontrolled use of antibiotics in poultry can lead to the development of antimicrobial resistance, which is a concern not only in animals, but for humans as well. One of the promising ways to overcome this challenge is found in probiotics due to their wide range of features and mechanisms of action for health promotion. Moreover, spore-forming probiotics are suitable for use in the poultry industry because of their unique ability, encapsulation, granting them protection from the harshest conditions and resulting in improved availability for hosts’ organisms. This review summarizes the information on gastrointestinal tract microbiota of poultry and their interaction with commensal and probiotic spore-forming bacteria. One of the most important topics of this review is the absence of uniformity in spore-forming probiotic trials in poultry. In our opinion, this problem can be solved by the creation of standards and checklists for these kinds of trials such as those used for pre-clinical and clinical trials in human medicine. Last but not least, this review covers problems and challenges related to spore-forming probiotic manufacturing.
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15
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Nishiyama T, Ashida N, Nakagawa K, Iwatani S, Yamamoto N. Dietary Bacillus subtilis C-3102 Supplementation Enhances the Exclusion of Salmonella enterica from Chickens. J Poult Sci 2021; 58:138-145. [PMID: 33927568 PMCID: PMC8076624 DOI: 10.2141/jpsa.0200036] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/18/2020] [Indexed: 01/06/2023] Open
Abstract
Among the reported probiotic Bacillus strains, B. subtilis C-3102 has the unique potential to improve feed uptake under stress conditions in the broilers, piglets, and cows. In this study, we sought to evaluate the protective effect of feed additive probiotic Bacillus subtilis C-3102 against Salmonella enterica infection of specific pathogen-free (SPF) chicks in floor pens in two experiments. In the experiment-1, the chicks in the control group (n=32) were fed a basal diet and those in the C-3102 group (n=32) were fed a basal diet supplemented with 1×106 CFU/g of feed for 28 days. On day 7 post-challenge with S. enterica, there was no significant change in the body weight between both the groups throughout the test period, whereas detection rates of S. enterica in the C-3102 group were significantly lower in the cecum and liver on days 21 and 14 post-challenge, respectively. In the experiment-2, minimum dosage of C-3102 cells required to protect Salmonella infection was evaluated using 3 dosages. Chicks were divided into four groups, fed with different dosages of C-3102 (1×106, 5×105, 3×105, and 0 CFU/g of feed), and challenged with S. enterica (2.8×108 CFU/chicken). S. enterica infection was completed within 7 days post- challenge and was almost excluded from the liver and spleen on day 21 post- challenge in the control group. Average values showed a trend for higher infection rates in the control group >3×105>5×105>1×106 CFU/g on days 14 and 21 post-challenge. These results suggest that B. subtilis C-3102 supplementation has the potential to reduce S. enterica infection rates and/or to accelerate the exclusion of S. enterica from the chicks.
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Affiliation(s)
- Toki Nishiyama
- Asahi Biocycle Co., Ltd., 4-1, 2-chome, Ebisu-Minami, Shibuya-ku, Tokyo, Japan
| | - Nobuhisa Ashida
- Asahi Biocycle Co., Ltd., 4-1, 2-chome, Ebisu-Minami, Shibuya-ku, Tokyo, Japan
| | - Koichi Nakagawa
- Asahi Biocycle Co., Ltd., 4-1, 2-chome, Ebisu-Minami, Shibuya-ku, Tokyo, Japan
| | - Shun Iwatani
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Naoyuki Yamamoto
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
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16
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Lu Y, Ding H, Jiang X, Zhang H, Ma A, Hu Y, Li Z. Effects of the extract from peanut meal fermented with Bacillus natto and Monascus on lipid metabolism and intestinal barrier function of hyperlipidemic mice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2561-2569. [PMID: 33063356 DOI: 10.1002/jsfa.10884] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/03/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Hyperlipidemia is one of the metabolic disorders that poses a great threat to human health. This study is aimed at investigating the potential hypolipidemic properties of extract from peanut meal fermented with Bacillus natto and Monascus in mice fed with a high-fat diet. Herein, 60 male C57BL/6J mice were randomly divided into six groups: four control groups, comprised of a normal group, a model (M) group, a positive control group (atorvastatin 10 mg kg-1 ), and a nonfermented peanut meal extract group (150 mg kg-1 ), and two experimental groups, comprised of a fermented peanut meal extract low-dose group (50 mg kg-1 ) and a fermented peanut meal extract high-dose group (FH, 150 mg kg-1 ). RESULTS Body weight (P = 0.001) and levels of serum total cholesterol (P = 0.007), triacylglycerol (P = 0.040), low-density lipoprotein cholesterol (P < 0.001), and leptin (P < 0.001) were remarkably decreased in the FH group, whereas the serum high-density lipoprotein cholesterol levels were increased (P < 0.001) by 78.3% compared with the M group. Ileum tissue stained with hematoxylin and eosin showed that the ileal villus detachments in mice were improved, and the villus height was increased by supplementation with extract from fermented peanut meal. Moreover, the expressions of intestinal ZO-1 (P = 0.003) and occludin (P = 0.013) were elevated in the FH group, compared with the M group. CONCLUSION Extract of peanut meal fermented by B. natto and Monascus can effectively improve hyperlipidemia caused by a high-fat diet in mice, via regulating leptin and blood lipid levels, and protect the intestinal mucosal barrier, which provides evidence for its anti-hyperlipidemia effects and is a research basis for potential industrial development. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Yaqian Lu
- School of Public Health, Medical College, Qingdao University, Qingdao, China
- Institute of Biomedical Engineering, College of Life Sciences, Qingdao University, Qingdao, China
| | - Haoyue Ding
- School of Public Health, Medical College, Qingdao University, Qingdao, China
| | - Xiaoyang Jiang
- School of Public Health, Medical College, Qingdao University, Qingdao, China
| | - Huiwen Zhang
- School of Public Health, Medical College, Qingdao University, Qingdao, China
| | - Aiguo Ma
- School of Public Health, Medical College, Qingdao University, Qingdao, China
| | - Yingfen Hu
- Institute of Biomedical Engineering, College of Life Sciences, Qingdao University, Qingdao, China
| | - Zichao Li
- Institute of Biomedical Engineering, College of Life Sciences, Qingdao University, Qingdao, China
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17
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Bacillus Toyonensis BCT-7112 T Spores as Parenteral Adjuvant of BoHV-5 Vaccine in a Murine Model. Probiotics Antimicrob Proteins 2021; 13:655-663. [PMID: 33608827 DOI: 10.1007/s12602-021-09753-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2021] [Indexed: 10/22/2022]
Abstract
Bacterial spores of the genus Bacillus are being evaluated as adjuvant molecules capable of improving the immune response to vaccines. In this study, we investigate whether subcutaneously administered spores of B. toyonensis BCT-7112T could enhance a vaccine immune response in mice. Three groups of mice were subcutaneously vaccinated on day 0 and received a booster on day 21 of the experiment, with the following vaccine formulations: 40 µg of recombinant glycoprotein D (rgD) from bovine herpesvirus type 5 (BoHV-5) adsorbed in 10% aluminum hydroxide (alum) without B. toyonensis spores (group 1) and B. toyonensis (1 × 106 viable spores) + 40 µg of rgD adsorbed in 10% alum (group 2); and B. toyonensis (1 × 106 viable spores) without rgD (group 3). Group 2 showed significantly higher titers (P < 0.05) of total specific serum IgG, IgG2a, and neutralizing antibodies, when compared with the groups 1 and 3. A significantly higher (P < 0.05) transcription level of cytokines IL-4, IL-12, and IFN-γ was observed in splenocytes from mice that received the B. toyonensis spores in the vaccine formulation. In addition, stimulation of the macrophage-like cell line RAW264.7 with spores of B. toyonensis markedly enhanced the cell proliferation and mRNA transcription levels of IL-4, and IL-12 cytokines in these cells. Our findings indicated that the subcutaneous administration of B. toyonensis BCT-7112T spores enhanced the humoral and cellular immune response against BoHV-5 in mice.
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18
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Ruiz Sella SRB, Bueno T, de Oliveira AAB, Karp SG, Soccol CR. Bacillus subtilis natto as a potential probiotic in animal nutrition. Crit Rev Biotechnol 2021; 41:355-369. [PMID: 33563053 DOI: 10.1080/07388551.2020.1858019] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The growing global demand for animal products and processed meat has created a challenge for the livestock sector to enhance animal productivity without compromising product quality. The restriction of antibiotics in animal feeds as growth promoters makes the use of probiotics a natural and safe alternative to obtain functional foods that provide animal health and quality and to maintain food safety for consumers. To incorporate these additives into the diet, detailed studies are required, in which in vitro and in vivo assays are used to prove the efficacy and to ensure the safety of probiotic candidate strains. Studies on the use of Bacillus subtilis natto as a spore-forming probiotic bacterium in animal nutrition have shown no hazardous effects and have demonstrated the effectiveness of its use as a probiotic, mainly due to its proven antimicrobial, anti-inflammatory, antioxidant, enzymatic, and immunomodulatory activity. This review summarizes the recent scientific background on the probiotic effects of B. subtilis natto in animal nutrition. It focuses on its safety assessment, host-associated efficacy, and industrial requirements.
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Affiliation(s)
- Sandra R B Ruiz Sella
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil.,Departament of Research and Development, Production and Research Centre of Immunobiological Products, Secretaria de Estado da Saúde, Piraquara, Brazil
| | - Tarcila Bueno
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil.,Biotechnology Coordination, Federal Institute of Paraná, Curitiba, Brazil
| | - Angelo A B de Oliveira
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil
| | - Susan Grace Karp
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil
| | - Carlos Ricardo Soccol
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil
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19
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Barreto HC, Cordeiro TN, Henriques AO, Gordo I. Rampant loss of social traits during domestication of a Bacillus subtilis natural isolate. Sci Rep 2020; 10:18886. [PMID: 33144634 PMCID: PMC7642357 DOI: 10.1038/s41598-020-76017-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/22/2020] [Indexed: 12/16/2022] Open
Abstract
Most model bacteria have been domesticated in laboratory conditions. Yet, the tempo with which a natural isolate diverges from its ancestral phenotype under domestication to a novel laboratory environment is poorly understood. Such knowledge, however is essential to understanding the rate of evolution, the time scale over which a natural isolate can be propagated without loss of its natural adaptive traits, and the reliability of experimental results across labs. Using experimental evolution, phenotypic assays, and whole-genome sequencing, we show that within a week of propagation in a common laboratory environment, a natural isolate of Bacillus subtilis acquires mutations that cause changes in a multitude of traits. A single adaptive mutational step in the gene coding for the transcriptional regulator DegU impairs a DegU-dependent positive autoregulatory loop and leads to loss of robust biofilm architecture, impaired swarming motility, reduced secretion of exoproteases, and to changes in the dynamics of sporulation across environments. Importantly, domestication also resulted in improved survival when the bacteria face pressure from cells of the innate immune system. These results show that degU is a target for mutations during domestication and underscores the importance of performing careful and extremely short-term propagations of natural isolates to conserve the traits encoded in their original genomes.
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Affiliation(s)
- Hugo C Barreto
- Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Tiago N Cordeiro
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Adriano O Henriques
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal.
| | - Isabel Gordo
- Instituto Gulbenkian de Ciência, Oeiras, Portugal.
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20
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21
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Hu R, Lin H, Li J, Zhao Y, Wang M, Sun X, Min Y, Gao Y, Yang M. Probiotic Escherichia coli Nissle 1917-derived outer membrane vesicles enhance immunomodulation and antimicrobial activity in RAW264.7 macrophages. BMC Microbiol 2020; 20:268. [PMID: 32854612 PMCID: PMC7457259 DOI: 10.1186/s12866-020-01953-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 08/20/2020] [Indexed: 12/15/2022] Open
Abstract
Background Probiotic Escherichia coli Nissle 1917 (EcN) has been widely studied for the treatment of intestinal inflammatory diseases and infectious diarrhea, but the mechanisms by which they communicate with the host are not well-known. Outer membrane vesicles (OMVs) are produced by Gram-negative bacteria and deliver microbial molecules to distant target cells in the host, which play a very important role in mediating bacteria-host communication. Here, we aimed to investigate whether EcN-derived OMVs (EcN_OMVs) could mediate immune regulation in macrophages. Results In this study, after the characterization of EcN_OMVs using electron microscopy, nanoparticle tracking and proteomic analyses, we demonstrated by confocal fluorescence microscopy that EcN_OMVs could be internalized by RAW 264.7 macrophages. Stimulation with EcN_OMVs at appropriate concentrations promoted proliferation, immune-related enzymatic activities and phagocytic functions of RAW264.7 cells. Moreover, EcN_OMVs induced more anti-inflammatory responses (IL-10) than pro-inflammatory responses (IL-6 and TNF-α) in vitro, and also modulated the production of Th1-polarizing cytokine (IL-12) and Th2-polarizing cytokine (IL-4). Treatments with EcN_OMVs effectively improved the antibacterial activity of RAW 264.7 macrophages. Conclusions These findings indicated that EcN_OMVs could modulate the functions of the host immune cells, which will enrich the existing body of knowledge of EVs as an important mechanism for the communication of probiotics with their hosts.
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Affiliation(s)
- Rujiu Hu
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hua Lin
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jing Li
- Department of Animal Engineering, Yangling Vocation and Technical Colleg, Yangling, 712100, Shaanxi, China
| | - Yuezhen Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mimi Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaoqin Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yuna Min
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yupeng Gao
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mingming Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Wang H, Xu L, Yu M, Wang Y, Jiang T, Yang S, Lv Z. Glycosaminoglycan from Apostichopus japonicus induces immunomodulatory activity in cyclophosphamide-treated mice and in macrophages. Int J Biol Macromol 2019; 130:229-237. [PMID: 30797007 DOI: 10.1016/j.ijbiomac.2019.02.093] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/13/2019] [Accepted: 02/15/2019] [Indexed: 02/07/2023]
Abstract
This study was designed to systematically elucidate the immunomodulation effect of glycosaminoglycan from Apostichopus japonicus (AHG) in cyclophosphamide (CY)-induced immunosuppression model and potential mechanism responsible for the activation of macrophages. The results showed that the treatment with AHG could increase natural killer (NK) cell cytotoxicity, carbon clearance and marker enzymes activities in CY-induced immunosuppression mice, indicating that the innate immunity experienced recovery to some extent. Moreover, CY-induced reductions in thymus and spleen indices, serum levels of cytokines, immunoglobulins and hemolysin, as well as the ratio of spleen lymphocyte subsets were recovered by AHG, suggesting that AHG could improve the adaptive immunity through cellular immunity and humoral immunity. Delightedly, it was found that AHG at 10 mg/kg body weight could restore the CY-induced immunosuppression in mice to normal level on both innate and adaptive immunity. Furthermore, AHG also promoted both the expression of NO, TNF-α, IL-6, IL-1β, IL-18 and MCP-1 protein and related mRNA in macrophages. It was revealed that AHG activated macrophages through the phosphorylation of mitogen-activated protein kinase (MAPK) and nuclear factor-B (NF-κB). In conclusion, AHG exerts remarkable immunomodulatory activities in both innate and adaptive immune system. These findings should have great value for further study on the immunopotentiating mechanisms of this biomacromolecule.
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Affiliation(s)
- Han Wang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China
| | - Lei Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China
| | - Mingming Yu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, PR China; Key Laboratory of Glycoscience & Glycotechnology of Shandong Province, Qingdao 266003, PR China; Key Laboratory of Marine Drugs, Ministry of Education of China, Qingdao 266003, PR China.
| | - Yuanhong Wang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, PR China; Key Laboratory of Glycoscience & Glycotechnology of Shandong Province, Qingdao 266003, PR China.
| | - Tingfu Jiang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, PR China; Key Laboratory of Marine Drugs, Ministry of Education of China, Qingdao 266003, PR China.
| | - Shuang Yang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, PR China; Key Laboratory of Glycoscience & Glycotechnology of Shandong Province, Qingdao 266003, PR China; Key Laboratory of Marine Drugs, Ministry of Education of China, Qingdao 266003, PR China.
| | - Zhihua Lv
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, PR China; Key Laboratory of Glycoscience & Glycotechnology of Shandong Province, Qingdao 266003, PR China; Key Laboratory of Marine Drugs, Ministry of Education of China, Qingdao 266003, PR China.
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23
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Cao ZH, Green-Johnson JM, Buckley ND, Lin QY. Bioactivity of soy-based fermented foods: A review. Biotechnol Adv 2019; 37:223-238. [PMID: 30521852 DOI: 10.1016/j.biotechadv.2018.12.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 09/29/2018] [Accepted: 12/02/2018] [Indexed: 12/13/2022]
Abstract
For centuries, fermented soy foods have been dietary staples in Asia and, now, in response to consumer demand, they are available throughout the world. Fermentation bestows unique flavors, boosts nutritional values and increases or adds new functional properties. In this review, we describe the functional properties and underlying action mechanisms of soy-based fermented foods such as Natto, fermented soy milk, Tempeh and soy sauce. When possible, the contribution of specific bioactive components is highlighted. While numerous studies with in vitro and animal models have hinted at the functionality of fermented soy foods, ascribing health benefits requires well-designed, often complex human studies with analysis of diet, lifestyle, family and medical history combined with long-term follow-ups for each subject. In addition, the contribution of the microbiome to the bioactivities of fermented soy foods, possibly mediated through direct action or bioactive metabolites, needs to be studied. Potential synergy or other interactions among the microorganisms carrying out the fermentation and the host's microbial community may also contribute to food functionality, but the details still require elucidation. Finally, safety evaluation of fermented soy foods has been limited, but is essential in order to provide guidelines for consumption and confirm lack of toxicity.
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Affiliation(s)
- Zhen-Hui Cao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Julia M Green-Johnson
- Faculty of Science, University of Ontario Institute of Technology (UOIT), Oshawa L1H 7K4, Canada
| | | | - Qiu-Ye Lin
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
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24
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Yao S, Xu M, Li Y, Zhou L, Liao H, Zhang H, Zhang C. Staphylococcal enterotoxin C2 stimulated the maturation of bone marrow derived dendritic cells via TLR-NFκB signaling pathway. Exp Cell Res 2018; 370:237-244. [DOI: 10.1016/j.yexcr.2018.06.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 11/27/2022]
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25
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Grant A, Gay CG, Lillehoj HS. Bacillus spp. as direct-fed microbial antibiotic alternatives to enhance growth, immunity, and gut health in poultry. Avian Pathol 2018; 47:339-351. [PMID: 29635926 DOI: 10.1080/03079457.2018.1464117] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The increasing occurrence of antibiotic-resistant bacteria combined with regulatory pressure and consumer demands for foods produced without antibiotics has caused the agricultural industry to restrict its practice of using antibiotic growth promoters (AGP) in food animals. The poultry industry is not immune to this trend, and has been actively seeking natural alternatives to AGP that will improve the health and growth performance of commercial poultry flocks. Bacillus probiotics have been gaining in popularity in recent years as an AGP alternative because of their health-promoting benefits and ability to survive the harsh manufacturing conditions of chicken feed production. This review provides an overview of several modes of action of some Bacillus direct-fed microbials as probiotics. Among the benefits of these direct-fed microbials are their production of naturally synthesized antimicrobial peptides, gut flora modulation to promote beneficial microbiota along the gastrointestinal tract, and various immunological and gut morphological alterations. The modes of action for increased performance are not well defined, and growth promotion is not equal across all Bacillus species or within strains. Appropriate screening and characterization of Bacillus isolates prior to commercialization are necessary to maximize poultry growth to meet the ultimate goal of eliminating AGP usage in animal husbandry.
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Affiliation(s)
- Ar'Quette Grant
- a Animal Biosciences and Biotechnology Laboratory, Agricultural Research Service , US Department of Agriculture , Beltsville , MD , USA
| | - Cyril G Gay
- b National Program Staff - Animal Health, Agricultural Research Service , US Department of Agriculture , Beltsville , MD , USA
| | - Hyun S Lillehoj
- a Animal Biosciences and Biotechnology Laboratory, Agricultural Research Service , US Department of Agriculture , Beltsville , MD , USA
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26
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Mingmongkolchai S, Panbangred W. Bacillus probiotics: an alternative to antibiotics for livestock production. J Appl Microbiol 2018; 124:1334-1346. [PMID: 29316021 DOI: 10.1111/jam.13690] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/16/2017] [Accepted: 12/29/2017] [Indexed: 12/16/2022]
Abstract
The use of probiotics as feed supplements in animal production has increased considerably over the last decade, particularly since the ban on antibiotic growth promoters in the livestock sector. Several Bacillus sp. are attractive for use as probiotic supplements in animal feed due to their ability to produce spores. Their heat stability and ability to survive the low pH of the gastric barrier represent an advantage over other probiotic micro-organisms. This review discusses important characteristics required for selection of Bacillus probiotic strains and summarizes the beneficial effect of Bacillus-based feed additives on animal production. Although the mechanism of action of Bacillus probiotics has not been fully elucidated, they are effective in improving the growth, survival and health status of terrestrial and aquatic livestock. Bacillus strains also have utility in bioremediation and can reduce nitrogenous waste, thereby improving environmental conditions and water quality. Finally, recent innovative approaches for using Bacillus spores in various applications are discussed.
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Affiliation(s)
- S Mingmongkolchai
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Faculty of Science, Mahidol University-Osaka University Collaborative Research Center for Bioscience and Biotechnology (MU-OU:CRC), Mahidol University, Bangkok, Thailand
| | - W Panbangred
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Faculty of Science, Mahidol University-Osaka University Collaborative Research Center for Bioscience and Biotechnology (MU-OU:CRC), Mahidol University, Bangkok, Thailand
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27
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Gong L, Huang Q, Fu A, Wu Y, Li Y, Xu X, Huang Y, Yu D, Li W. Spores of two probiotic Bacillus species enhance cellular immunity in BALB/C mice. Can J Microbiol 2018; 64:41-48. [DOI: 10.1139/cjm-2017-0373] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Previous studies found that Bacillus subtilis BS02 and B. subtilis subsp. natto BS04 isolated in our laboratory could activate the immune response of murine macrophages in vitro. This study aims to investigate the effects of dietary supplementation with Bacillus species spores on the systemic cellular immune response in BALB/C mice. Results showed that both B. subtilis BS02 and B. subtilis natto BS04 enhanced the phagocytic function of the mononuclear phagocyte system (MPS) and the cytotoxicity of natural killer (NK) cells. In addition, B. subtilis BS02 could increase the respiratory burst activity of blood phagocytes. Furthermore, B. subtilis BS02 and B. subtilis natto BS04 increased the percentage of gamma-interferon-producing CD4+ cells and CD8+ T-cells, but only BS04 increased the percentage of CD3+ cells and CD3+ CD4+ cells in splenocytes. However, there were no effects on other subsets of splenic lymphocytes and mitogen-induced splenic lymphocyte proliferation. All data suggested that oral administration of B. subtilis BS02 or B. subtilis natto BS04 could significantly enhance cellular immunity in BALB/C mice by increasing phagocytic activity of MPS and cytotoxic activity of NK cells in a strain-specific manner.
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Affiliation(s)
- Li Gong
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
| | - Qin Huang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
- College of Life Sciences and Ecology, Hainan Tropical Ocean University, Hainan Province, 572022 Sanya, China
| | - Aikun Fu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
| | - YanPing Wu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
| | - Yali Li
- School of Life Sciences, Hunan Normal University, 410006 Changsha, China
| | - Xiaogang Xu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
| | - Yi Huang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
- College of Animal Science and Technology, Guangxi University, 530005 Nanning, China
| | - Dongyou Yu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
| | - Weifen Li
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China
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28
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Kraśko JA, Žilionytė K, Darinskas A, Strioga M, Rjabceva S, Zalutsky I, Derevyanko M, Kulchitsky V, Lubitz W, Kudela P, Miseikyte-Kaubriene E, Karaman O, Didenko H, Potebnya H, Chekhun V, Pašukonienė V. Bacterial ghosts as adjuvants in syngeneic tumour cell lysate-based anticancer vaccination in a murine lung carcinoma model. Oncol Rep 2016; 37:171-178. [PMID: 27878261 DOI: 10.3892/or.2016.5252] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/22/2016] [Indexed: 11/06/2022] Open
Abstract
Instead of relying on external anticancer factors for treatment, immunotherapy utilizes the host's own immune system and directs it against given tumour antigens. This study demonstrated that it is possible to overcome the documented immunosuppressive properties of tumour cell lysate by supplementing it with appropriate adjuvant. Lewis lung carcinoma (LLC)‑challenged C57BL/6 mice were treated with LLC cryo‑lysate mixed with either bacterial ghosts (BGs) generated from E. coli Nissle 1917 or B. subtilis 70 kDa protein as adjuvants. Median and overall survival, the size of metastatic foci in lung tissue and levels of circulating CD8a+ T cells were evaluated and compared to the untreated control mice or mice treated with LLC lysate alone. After primary tumour removal, a course of three subcutaneous vaccinations with LLC lysate supplemented with BGs led to a significant increase in overall survival (80% after 84 days of follow‑up vs. 40% in untreated control mice), a significant increase in circulating CD8a+ T cells (16.57 vs. 12.6% in untreated control mice) and a significant decrease in metastasis foci area and incidence. LLC lysate supplemented with B. subtilis protein also improved the inspected parameters in the treated mice, when compared against the untreated control mice, but not to a significant degree. Therefore, whole cell lysate supplemented with BGs emerges as an immunostimulatory construct with potential clinical applications in cancer treatment.
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Affiliation(s)
| | | | | | | | | | - Iosif Zalutsky
- Institute of Physiology, BY-220072 Minsk, Republic of Belarus
| | | | | | | | | | | | - Olha Karaman
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, 03022 Kyiv, Ukraine
| | - Hennadii Didenko
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, 03022 Kyiv, Ukraine
| | - Hryhorii Potebnya
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, 03022 Kyiv, Ukraine
| | - Vasyl Chekhun
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, 03022 Kyiv, Ukraine
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29
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Latorre JD, Hernandez-Velasco X, Kuttappan VA, Wolfenden RE, Vicente JL, Wolfenden AD, Bielke LR, Prado-Rebolledo OF, Morales E, Hargis BM, Tellez G. Selection of Bacillus spp. for Cellulase and Xylanase Production as Direct-Fed Microbials to Reduce Digesta Viscosity and Clostridium perfringens Proliferation Using an in vitro Digestive Model in Different Poultry Diets. Front Vet Sci 2015; 2:25. [PMID: 26664954 PMCID: PMC4672186 DOI: 10.3389/fvets.2015.00025] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 08/03/2015] [Indexed: 12/31/2022] Open
Abstract
Previously, our laboratory has screened and identified Bacillus spp. isolates as direct-fed microbials (DFM). The purpose of the present study was to evaluate the cellulase and xylanase production of these isolates and select the most appropriate Bacillus spp. candidates for DFM. Furthermore, an in vitro digestive model, simulating different compartments of the gastrointestinal tract, was used to determine the effect of these selected candidates on digesta viscosity and Clostridium perfringens proliferation in different poultry diets. Production of cellulase and xylanase were based on their relative enzyme activity. Analysis of 16S rRNA sequence classified two strains as Bacillus amyloliquefaciens and one of the strains as Bacillus subtilis. The DFM was included at a concentration of 108 spores/g of feed in five different sterile soybean-based diets containing corn, wheat, rye, barley, or oat. After digestion time, supernatants from different diets were collected to measure viscosity, and C. perfringens proliferation. Additionally, from each in vitro simulated compartment, samples were taken to enumerate viable Bacillus spores using a plate count method after heat-treatment. Significant (P < 0.05) DFM-associated reductions in supernatant viscosity and C. perfringens proliferation were observed for all non-corn diets. These results suggest that antinutritional factors, such as non-starch polysaccharides from different cereals, can enhance viscosity and C. perfringens growth. Remarkably, dietary inclusion of the DFM that produce cellulase and xylanase reduced both viscosity and C. perfringens proliferation compared with control diets. Regardless of diet composition, 90% of the DFM spores germinated during the first 30 min in the crop compartment of the digestion model, followed by a noteworthy increased in the intestine compartment by ~2log10, suggesting a full-life cycle development. Further studies to evaluate in vivo necrotic enteritis effects are in progress.
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Affiliation(s)
- Juan D Latorre
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
| | - Xochitl Hernandez-Velasco
- Departamento de Medicina y Zootecnia de Aves, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico , Mexico City , Mexico
| | - Vivek A Kuttappan
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
| | | | | | - Amanda D Wolfenden
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
| | - Lisa R Bielke
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
| | | | - Eduardo Morales
- Departamento de Produccion Agricola y Animal, Universidad Autonoma Metropolitana , Mexico City , Mexico
| | - Billy M Hargis
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
| | - Guillermo Tellez
- Department of Poultry Science, University of Arkansas , Fayetteville, AR , USA
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