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Al-Abdullatif AA, Azzam MM, Samara EM, Al-Badwi MA, Dong X, Abdel-Moneim AME. Assessing the Influence of Guanidinoacetic Acid on Growth Performance, Body Temperature, Blood Metabolites, and Intestinal Morphometry in Broilers: A Comparative Sex-Based Experiment. Animals (Basel) 2024; 14:1853. [PMID: 38997965 PMCID: PMC11240371 DOI: 10.3390/ani14131853] [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: 05/07/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
It is well known that female and male broilers showcase variations in their growth performance, influenced by various physiological factors. This experiment aims to explore potential differences between female and male broilers concerning growth performance, body temperature, blood metabolites, carcass traits, and intestinal architecture in response to guanidinoacetic acid (GAA) supplementation. A total of 240 Ross 308 broiler chickens were arranged in a 3 × 2 factorial design and randomly allocated into 48 boxes, each containing 5 birds. The experiment comprised six treatments, with eight replicates per treatment. The main factors investigated were dietary GAA levels (0%, 0.06%, and 0.12%) and sex (male and female). Male broilers demonstrated superior body weight gain (BWG) and feed intake (FI) compared to females (p< 0.05). GAA supplementation at 0.12% concentration notably improved BWG and reduced FI and feed conversion ratio (FCR) across experimental phases (p < 0.05). However, interactions between sex and GAA were minimal except for reduced FI and FCR (p < 0.05) in both sexes during early growth stages. Regardless of GAA treatment, the male birds exhibited more elevated shank and head temperatures than the females. Carcass traits were largely unaffected by GAA supplementation or sex, except for higher heart yield in the males. Serum metabolite levels were not different between treatment groups at 10 and 24 days of age, except for a higher level of serum creatinine at 10 days in the female birds with 0.06% GA supplementation (p < 0.05). Intestinal morphology was significantly affected by GAA and sex, depending on the segment of intestine, in which GAA supplementation significantly increased villus height, crypt depth, villus width, surface area, and goblet cell count, while the males consistently exhibited higher values of these parameters than the females, and differences were observed between intestinal segments, especially in the ileum and duodenum, at different ages. In conclusion, the interactions between GAA and sex had minimal influences on growth performance indices. However, male broilers demonstrated a more pronounced response to GAA concerning ileal architecture. This study highlights the importance of supplementing broiler chicken diets with GAA for optimizing male broiler performance and intestinal function. The inclusion of GAA into broiler diets needs further study to reveal the underlying mechanisms driving these sex-specific responses and assess the long-term impacts of GAA supplementation on broiler health and productivity.
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Affiliation(s)
- Abdulaziz A. Al-Abdullatif
- Animal Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.-A.); (E.M.S.); (M.A.A.-B.)
| | - Mahmoud M. Azzam
- Animal Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.-A.); (E.M.S.); (M.A.A.-B.)
| | - Emad M. Samara
- Animal Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.-A.); (E.M.S.); (M.A.A.-B.)
| | - Mohammed A. Al-Badwi
- Animal Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.-A.); (E.M.S.); (M.A.A.-B.)
| | - Xinyang Dong
- Animal Science College, Zhejiang University, Zijingang Campus, Hangzhou 310058, China;
| | - Abdel-Moneim Eid Abdel-Moneim
- Biological Applications Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abu-Zaabal 13759, Egypt;
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Lillie IM, Booth CE, Horvath AE, Mondragon M, Engevik MA, Horvath TD. Characterizing arginine, ornithine, and putrescine pathways in enteric pathobionts. Microbiologyopen 2024; 13:e1408. [PMID: 38560776 PMCID: PMC10982811 DOI: 10.1002/mbo3.1408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 03/10/2024] [Accepted: 03/16/2024] [Indexed: 04/04/2024] Open
Abstract
Arginine-ornithine metabolism plays a crucial role in bacterial homeostasis, as evidenced by numerous studies. However, the utilization of arginine and the downstream products of its metabolism remain undefined in various gut bacteria. To bridge this knowledge gap, we employed genomic screening to pinpoint relevant metabolic targets. We also devised a targeted liquid chromatography-tandem mass spectrometry (LC-MS/MS) metabolomics method to measure the levels of arginine, its upstream precursors, and downstream products in cell-free conditioned media from enteric pathobionts, including Escherichia coli, Klebsiella aerogenes, K. pneumoniae, Pseudomonas fluorescens, Acinetobacter baumannii, Streptococcus agalactiae, Staphylococcus epidermidis, S. aureus, and Enterococcus faecalis. Our findings revealed that all selected bacterial strains consumed glutamine, glutamate, and arginine, and produced citrulline, ornithine, and GABA in our chemically defined medium. Additionally, E. coli, K. pneumoniae, K. aerogenes, and P. fluorescens were found to convert arginine to agmatine and produce putrescine. Interestingly, arginine supplementation promoted biofilm formation in K. pneumoniae, while ornithine supplementation enhanced biofilm formation in S. epidermidis. These findings offer a comprehensive insight into arginine-ornithine metabolism in enteric pathobionts.
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Affiliation(s)
- Ian M. Lillie
- Department of Materials Science & EngineeringCornell UniversityIthacaNew YorkUSA
- Department of Pathology & ImmunologyBaylor College of MedicineHoustonTexasUSA
- Department of PathologyTexas Children's HospitalHoustonTexasUSA
| | - Charles E. Booth
- Department of Regenerative Medicine & Cell BiologyMedical University of South CarolinaCharlestonSouth CarolinaUSA
| | - Adelaide E. Horvath
- Department of Regenerative Medicine & Cell BiologyMedical University of South CarolinaCharlestonSouth CarolinaUSA
- Department of Biology & BiochemistryUniversity of HoustonHoustonTexasUSA
- Department of MathematicsUniversity of HoustonHoustonTexasUSA
| | - Matthew Mondragon
- Department of Regenerative Medicine & Cell BiologyMedical University of South CarolinaCharlestonSouth CarolinaUSA
| | - Melinda A. Engevik
- Department of Regenerative Medicine & Cell BiologyMedical University of South CarolinaCharlestonSouth CarolinaUSA
- Department of Microbiology & ImmunologyMedical University of South CarolinaCharlestonSouth CarolinaUSA
| | - Thomas D. Horvath
- Department of Pathology & ImmunologyBaylor College of MedicineHoustonTexasUSA
- Department of PathologyTexas Children's HospitalHoustonTexasUSA
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Lu H, Zhang H, Wu Z, Li L. Microbiota-gut-liver-brain axis and hepatic encephalopathy. MICROBIOME RESEARCH REPORTS 2024; 3:17. [PMID: 38841407 PMCID: PMC11149093 DOI: 10.20517/mrr.2023.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 06/07/2024]
Abstract
Hepatic encephalopathy (HE) is a clinical manifestation of neurological and psychiatric abnormalities that are caused by complications of liver dysfunction including hyperammonemia, hyperuricemia, and portal hypertension. Accumulating evidence suggests that HE could be reversed through therapeutic modifications of gut microbiota. Multiple preclinical and clinical studies have indicated that gut microbiome affects the physiological function of the liver, such as the regulation of metabolism, secretion, and immunity, through the gut-liver crosstalk. In addition, gut microbiota also influences the brain through the gut-brain crosstalk, altering its physiological functions including the regulation of the immune, neuroendocrine, and vagal pathways. Thus, key molecules that are involved in the microbiota-gut-liver-brain axis might be able to serve as clinical biomarkers for early diagnosis of HE, and could be effective therapeutic targets for clinical interventions. In this review, we summarize the pathophysiology of HE and further propose approaches modulating the microbiota-gut-liver-brain axis in order to provide a comprehensive understanding of the prevention and potential clinical treatment for HE with a microbiota-targeted therapy.
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Affiliation(s)
| | | | | | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang, China
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4
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Zha H, Xia J, Wang K, Xu L, Chang K, Li L. Foodborne and airborne polyethersulfone nanoplastics respectively induce liver and lung injury in mice: Comparison with microplastics. ENVIRONMENT INTERNATIONAL 2024; 183:108350. [PMID: 38043322 DOI: 10.1016/j.envint.2023.108350] [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: 08/23/2023] [Revised: 10/26/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
Micro/nanoplastics (MNP) are ubiquitous in the environment and multiple living organisms. The toxicity of some common types of MNP, e.g., polyethersulfone (PES) MNP, remains poorly understood. Multi-omics approaches were used in this study to determine the effects of foodborne and airborne PES MNP on liver and lung, respectively. Foodborne MNP were capable of inducing gut microbial dysbiosis, gut and serum metabolic disruption, and liver transcriptomic dysregulation, and affecting serum antioxidant activity and liver function, resulting in liver injury. As for the airborne MNP, they were found to induce nasal and lung microbial dysbiosis, serum and lung metabolic disruption, and liver transcriptome disturbance, and cause disrupted serum antioxidant activity and lung injury. Foodborne and airborne PES NP were found to respectively induce greater liver and lung toxicity than MP, which could be associated with the differences between NP and MP exposures. The relevant results suggest that foodborne PES MNP could disrupt the "gut microbiota-gut-liver" axis and induce hepatic injury, while airborne PES MNP could affect the "airborne microbiota-lung" axis and cause lung injury. The findings could benefit the diagnoses of liver and lung injury respectively induced by foodborne and airborne PES MNP, as well as the proper use of PES in human living environment.
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Affiliation(s)
- Hua Zha
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiafeng Xia
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Kaicen Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lvwan Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Kevin Chang
- Department of Statistics, The University of Auckland, Auckland, New Zealand
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Di Cesare F, Calgaro M, Ghini V, Squarzanti DF, De Prisco A, Visciglia A, Zanetta P, Rolla R, Savoia P, Amoruso A, Azzimonti B, Vitulo N, Tenori L, Luchinat C, Pane M. Exploring the Effects of Probiotic Treatment on Urinary and Serum Metabolic Profiles in Healthy Individuals. J Proteome Res 2023; 22:3866-3878. [PMID: 37970754 PMCID: PMC10696601 DOI: 10.1021/acs.jproteome.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/11/2023] [Accepted: 10/24/2023] [Indexed: 11/17/2023]
Abstract
Probiotics are live microorganisms that confer health benefits when administered in adequate amounts. They are used to promote gut health and alleviate various disorders. Recently, there has been an increasing interest in the potential effects of probiotics on human physiology. In the presented study, the effects of probiotic treatment on the metabolic profiles of human urine and serum using a nuclear magnetic resonance (NMR)-based metabonomic approach were investigated. Twenty-one healthy volunteers were enrolled in the study, and they received two different dosages of probiotics for 8 weeks. During the study, urine and serum samples were collected from volunteers before and during probiotic supplementation. The results showed that probiotics had a significant impact on the urinary and serum metabolic profiles without altering their phenotypes. This study demonstrated the effects of probiotics in terms of variations of metabolite levels resulting also from the different probiotic posology. Overall, the results suggest that probiotic administration may affect both urine and serum metabolomes, although more research is needed to understand the mechanisms and clinical implications of these effects. NMR-based metabonomic analysis of biofluids is a powerful tool for monitoring host-gut microflora dynamic interaction as well as for assessing the individual response to probiotic treatment.
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Affiliation(s)
- Francesca Di Cesare
- Magnetic
Resonance Center (CERM), University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino, Firenze 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, Sesto Fiorentino 50019, Italy
| | - Matteo Calgaro
- Department
of Biotechnology, University of Verona, Strada le Grazie, 15, Verona 37134, Italy
| | - Veronica Ghini
- Magnetic
Resonance Center (CERM), University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino, Firenze 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, Sesto Fiorentino 50019, Italy
| | - Diletta Francesca Squarzanti
- Department
of Health Sciences (DiSS), University of
Piemonte Orientale (UPO), Via Solaroli, 17, Novara 28100, Italy
- Center
for Translational Research on Autoimmune and Allergic Diseases (CAAD),
Department of Health Sciences (DiSS), University
of Piemonte Orientale (UPO), Corso Trieste, 15, Novara 28100, Italy
| | | | | | - Paola Zanetta
- Department
of Health Sciences (DiSS), University of
Piemonte Orientale (UPO), Via Solaroli, 17, Novara 28100, Italy
- Center
for Translational Research on Autoimmune and Allergic Diseases (CAAD),
Department of Health Sciences (DiSS), University
of Piemonte Orientale (UPO), Corso Trieste, 15, Novara 28100, Italy
| | - Roberta Rolla
- Department
of Health Sciences (DiSS), University of
Piemonte Orientale (UPO), Via Solaroli, 17, Novara 28100, Italy
| | - Paola Savoia
- Department
of Health Sciences (DiSS), University of
Piemonte Orientale (UPO), Via Solaroli, 17, Novara 28100, Italy
| | - Angela Amoruso
- Probiotical
Research Srl, Via Enrico
Mattei, 3, Novara 28100, Italy
| | - Barbara Azzimonti
- Department
of Health Sciences (DiSS), University of
Piemonte Orientale (UPO), Via Solaroli, 17, Novara 28100, Italy
- Center
for Translational Research on Autoimmune and Allergic Diseases (CAAD),
Department of Health Sciences (DiSS), University
of Piemonte Orientale (UPO), Corso Trieste, 15, Novara 28100, Italy
| | - Nicola Vitulo
- Department
of Biotechnology, University of Verona, Strada le Grazie, 15, Verona 37134, Italy
| | - Leonardo Tenori
- Magnetic
Resonance Center (CERM), University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino, Firenze 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, Sesto Fiorentino 50019, Italy
- Consorzio
Interuniversitario Risonanze Magnetiche MetalloProteine (CIRMMP), Via Luigi Sacconi 6, Sesto Fiorentino, Firenze 50019, Italy
| | - Claudio Luchinat
- Consorzio
Interuniversitario Risonanze Magnetiche MetalloProteine (CIRMMP), Via Luigi Sacconi 6, Sesto Fiorentino, Firenze 50019, Italy
- Giotto
Biotech S.r.l., Via Madonna
del Piano, 6, Sesto Fiorentino, Firenze 50019, Italy
| | - Marco Pane
- Probiotical
Research Srl, Via Enrico
Mattei, 3, Novara 28100, Italy
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Bester A, O'Brien M, Cotter PD, Dam S, Civai C. Shotgun Metagenomic Sequencing Revealed the Prebiotic Potential of a Fruit Juice Drink with Fermentable Fibres in Healthy Humans. Foods 2023; 12:2480. [PMID: 37444219 DOI: 10.3390/foods12132480] [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: 04/10/2023] [Revised: 05/13/2023] [Accepted: 06/08/2023] [Indexed: 07/15/2023] Open
Abstract
Fibre-based dietary interventions are at the forefront of gut microbiome modulation research, with a wealth of 16S rRNA information to demonstrate the prebiotic effects of isolated fibres. However, there is a distinct lack of data relating to the effect of a combination of soluble and insoluble fibres in a convenient-to-consume fruit juice food matrix on gut microbiota structure, diversity, and function. Here, we aimed to determine the impact of the MOJU Prebiotic Shot, an apple, lemon, ginger, and raspberry fruit juice drink blend containing chicory inulin, baobab, golden kiwi, and green banana powders, on gut microbiota structure and function. Healthy adults (n = 20) were included in a randomised, double-blind, placebo-controlled, cross-over study, receiving 60 mL MOJU Prebiotic Shot or placebo (without the fibre mix) for 3 weeks with a 3-week washout period between interventions. Shotgun metagenomics revealed significant between-group differences in alpha and beta diversity. In addition, the relative abundance of the phyla Actinobacteria and Desulfobacteria was significantly increased as a result of the prebiotic intervention. Nine species were observed to be differentially abundant (uncorrected p-value of <0.05) as a result of the prebiotic treatment. Of these, Bifidobacterium adolescentis and CAG-81 sp900066785 (Lachnospiraceae) were present at increased abundance relative to baseline. Additionally, KEGG analysis showed an increased abundance in pathways associated with arginine biosynthesis and phenylacetate degradation during the prebiotic treatment. Our results show the effects of the daily consumption of 60 mL MOJU Prebiotic Shot for 3 weeks and provide insight into the functional potential of B. adolescentis.
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Affiliation(s)
- Adri Bester
- London Agri Food Innovation Clinic (LAFIC), School of Applied Sciences, London South Bank University, London SE1 0AA, UK
| | | | | | | | - Claudia Civai
- London Agri Food Innovation Clinic (LAFIC), School of Applied Sciences, London South Bank University, London SE1 0AA, UK
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Khreefa Z, Barbier MT, Koksal AR, Love G, Del Valle L. Pathogenesis and Mechanisms of SARS-CoV-2 Infection in the Intestine, Liver, and Pancreas. Cells 2023; 12:cells12020262. [PMID: 36672197 PMCID: PMC9856332 DOI: 10.3390/cells12020262] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/30/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
The novel coronavirus, SARS-CoV-2, rapidly spread worldwide, causing an ongoing global pandemic. While the respiratory system is the most common site of infection, a significant number of reported cases indicate gastrointestinal (GI) involvement. GI symptoms include anorexia, abdominal pain, nausea, vomiting, and diarrhea. Although the mechanisms of GI pathogenesis are still being examined, viral components isolated from stool samples of infected patients suggest a potential fecal-oral transmission route. In addition, viral RNA has been detected in blood samples of infected patients, making hematologic dissemination of the virus a proposed route for GI involvement. Angiotensin-converting enzyme 2 (ACE2) receptors serve as the cellular entry mechanism for the virus, and these receptors are particularly abundant throughout the GI tract, making the intestine, liver, and pancreas potential extrapulmonary sites for infection and reservoirs sites for developing mutations and new variants that contribute to the uncontrolled spread of the disease and resistance to treatments. This transmission mechanism and the dysregulation of the immune system play a significant role in the profound inflammatory and coagulative cascades that contribute to the increased severity and risk of death in several COVID-19 patients. This article reviews various potential mechanisms of gastrointestinal, liver, and pancreatic injury.
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Affiliation(s)
- Zaid Khreefa
- Department of Pathology, School of Medicine, Louisiana State University Health School of Medicine, New Orleans, LA 70112, USA
| | - Mallory T. Barbier
- Louisiana Cancer Research Center, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Ali Riza Koksal
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Gordon Love
- Department of Pathology, School of Medicine, Louisiana State University Health School of Medicine, New Orleans, LA 70112, USA
| | - Luis Del Valle
- Department of Pathology, School of Medicine, Louisiana State University Health School of Medicine, New Orleans, LA 70112, USA
- Louisiana Cancer Research Center, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Correspondence:
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Cowieson A. Comparative biology of germ-free and conventional poultry. Poult Sci 2022; 101:102105. [PMID: 36057194 PMCID: PMC9450149 DOI: 10.1016/j.psj.2022.102105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 11/07/2022] Open
Abstract
Interaction between the host and the enteric microbiome is highly complex. Microbial involvement in certain pathologies is moderately well established, but the contribution of the microbiome to animal welfare, behavior, sustainability, immune development, nutritional status, physiology, and maturation is less clear. A valuable experimental model to enable scientists to explore the role of the microbiome in various domains is to compare various phenotypes of a conventionally reared (CV) cohort with those in a germ-free (GF) state. A GF animal is one that is devoid of any detectable microbial life including bacteria, viruses, protozoa and parasites. The GF state is different from gnotobiotic animals where the microbiome is fully described, or ‘specific pathogen free’ (SPF) animals where a moderately normal microbiome is present but devoid of pathogenic microorganisms. Pioneering GF research in poultry in the late 1940s and 1950s has its origin in a need understand the mode of action of antibiotics. Early researchers quickly established that GF chicks responded differently to antibiotics than CV counterparts. The GF experimental model has since been exploited in many divergent fields including pathology, immunology, metabolism, anatomy, physiology, and others. The absence of a microbiome presents the host with a range of advantages and disadvantages. For example, GF chicks often grow more quickly and have lower feed conversion ratio (FCR) than their CV counterparts but may be less resilient to external stress and have a compromised immunological maturation rate. This review will summarize the literature on GF animal research with a special emphasis on poultry. The objective of the review is to establish a frame of reference to understand the extent of the role of the microbiome in animal health, welfare, nutrition, and growth, to provide opportunities for targeted modulation of the microbiome to achieve desired phenotypic responses whilst simultaneously minimizing unintended collateral effects.
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Yang YP, Zhang XY, Cui BT, Zhang H, Wu ZF, Tan X, Cheng W, Zhu X, Zhang FM, Qin HL, Wei H. Preclinical safety, effectiveness evaluation, and screening of functional bacteria for fecal microbiota transplantation based on germ-free animals. World J Meta-Anal 2021; 9:496-504. [DOI: 10.13105/wjma.v9.i6.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 10/14/2021] [Accepted: 12/24/2021] [Indexed: 02/06/2023] Open
Abstract
Fecal microbiota transplantation (FMT), also known as fecal bacterial therapy, is a treatment option that can quickly reconstruct the normal composition of intestinal microbes, and it has a good therapeutic effect on Clostridium difficile infection, as well as on other microecological disorders. However, the causal mechanism of FMT efficacy remains to be clarified, its safety is a major problem, and the standardization and acceptability of FMT need to be improved. This review summarizes its current research status and potential research areas that need to be strengthened, and proposes to clarify the safety of FMT and the causal relationship between FMT and therapeutic effectiveness based on germ-free animals. Meanwhile, the research system is combined with multiomics technology to screen the effective bacteria in FMT, and develop standard, safe, effective and controllable flora of FMT.
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Affiliation(s)
- Ya-Peng Yang
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Xue-Ying Zhang
- Intestinal Microenvironment Treatment Center, Tenth People’s Hospital of Tongji University, Shanghai 200072, China
| | - Bo-Ta Cui
- Medical Center for Digestive Diseases, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
- Key Lab of Holistic Integrative Enterology, Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
| | - Hang Zhang
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Zhi-Feng Wu
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Xiang Tan
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Wei Cheng
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Xi Zhu
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Fa-Ming Zhang
- Medical Center for Digestive Diseases, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
- Key Lab of Holistic Integrative Enterology, Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
- Division of Microbiotherapy, Sir Run Run Shaw Hospital, Nanjing Medical University, Nanjing 211166, Jiangsu Province, China
| | - Huan-Long Qin
- Intestinal Microenvironment Treatment Center, Tenth People’s Hospital of Tongji University, Shanghai 200072, China
| | - Hong Wei
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
- Central Laboratory, Clinical Medicine Scientific and Technical Innovation Park, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200435, China
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