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Zhu S, Zhang X, Xu K, Liang J, Wang W, Zeng L, Xu K. Loss of NLRP6 expression increases the severity of intestinal injury after syngeneic hematopoietic stem cell transplantation. Ann Hematol 2024; 103:3145-3154. [PMID: 38607553 DOI: 10.1007/s00277-024-05745-5] [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: 01/02/2024] [Accepted: 04/03/2024] [Indexed: 04/13/2024]
Abstract
NLRP6 plays a crucial role in maintaining intestinal homeostasis by regulating the interaction between the intestinal mucosa and the microbiota. However, the impact of NLRP6 deficiency on intestinal damage following hematopoietic stem cell transplantation (HSCT) remains poorly understood. In this study, we established a syngeneic HSCT mouse model using C57BL/6 mice as donors and NLRP6-/- or C57BL/6 mice as recipients. Our findings revealed that NLRP6 deficiency had minimal influence on peripheral blood cell counts and splenic immune cell proportions in transplanted mice. However, it exacerbated pathological changes in the small intestine on day 14 post-transplantation, accompanied by increased proportions of macrophages, dendritic cells, and neutrophils. Furthermore, the NLRP6 deficiency resulted in elevated expression of MPO and CD11b, while reducing the levels mature caspase-1 and mature IL-1β in the intestine. Moreover, the NLRP6 deficiency disturbed the expression of apoptosis-related molecules and decreased the tight junction protein occludin. Notably, recipient mice with NLRP6 deficiency exhibited lower mRNA expression levels of antimicrobial genes, such as Reg3γ and Pla2g2a. The short-term increase in inflammatory cell infiltration caused by NLRP6 deficiency was associated with intestinal damage, increased apoptosis, reduced expression of antimicrobial peptides, and impaired intestinal repair. Taken together, our findings demonstrate that the loss of NLRP6 exacerbates post-transplantation intestinal damage in recipient mice.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Xue Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - Kairen Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Jing Liang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Weiwei Wang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China.
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China.
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Zou S, Li Y, Zou Q, Yang M, Li H, Niu R, Lai H, Wang J, Yang X, Zhou L. Gut microbiota and serum metabolomic alterations in modulating the impact of fecal microbiota transplantation on ciprofloxacin-induced seizure susceptibility. Front Microbiol 2024; 15:1403892. [PMID: 38962126 PMCID: PMC11220169 DOI: 10.3389/fmicb.2024.1403892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/28/2024] [Indexed: 07/05/2024] Open
Abstract
Introduction The gut microbiota and the microbiota-gut-brain axis have gained considerable attention in recent years, emerging as key players in the mechanisms that mediate the occurrence and progression of many central nervous system-related diseases, including epilepsy. In clinical practice, one of the side effects of quinolone antibiotics is a lower seizure threshold or aggravation. However, the underlying mechanism remains unclear. Methods We aimed to unravel the intrinsic mechanisms through 16S rRNA sequencing and serum untargeted metabolomic analysis to shed light on the effects of gut microbiota in ciprofloxacin-induced seizure susceptibility and lithium pilocarpine-induced epilepsy rat models. Results We observed that ciprofloxacin treatment increased seizure susceptibility and caused gut dysbiosis. We also found similar changes in the gut microbiota of rats with lithium pilocarpine-induced epilepsy. Notably, the levels of Akkermansia and Bacteroides significantly increased in both the ciprofloxacin-induced seizure susceptibility and lithium pilocarpine-induced epilepsy rat models. However, Marvinbryantia, Oscillibacter, and Ruminococcaceae_NK4A214_group showed a coincidental reduction. Additionally, the serum untargeted metabolomic analysis revealed decreased levels of indole-3-propionic acid, a product of tryptophan-indole metabolism, after ciprofloxacin treatment, similar to those in the plasma of lithium pilocarpine-induced epilepsy in rats. Importantly, alterations in the gut microbiota, seizure susceptibility, and indole-3-propionic acid levels can be restored by fecal microbiota transplantation. Conclusion In summary, our findings provide evidence that ciprofloxacin-induced seizure susceptibility is partially mediated by the gut microbiota and tryptophan-indole metabolism. These associations may play a role in epileptogenesis, and impacting the development progression and treatment outcomes of epilepsy.
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Affiliation(s)
- Shangnan Zou
- Clinical Neuroscience Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Yinchao Li
- Clinical Neuroscience Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Qihang Zou
- Clinical Neuroscience Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Man Yang
- Clinical Neuroscience Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Huifeng Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Basic Medicine, Guangzhou National Laboratory, Guangzhou, Guangdong, China
| | - Ruili Niu
- Department of Basic Medicine, Guangzhou National Laboratory, Guangzhou, Guangdong, China
| | - Huanling Lai
- Department of Basic Medicine, Guangzhou National Laboratory, Guangzhou, Guangdong, China
| | - Jiaoyang Wang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Basic Medicine, Guangzhou National Laboratory, Guangzhou, Guangdong, China
| | - Xiaofeng Yang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Basic Medicine, Guangzhou National Laboratory, Guangzhou, Guangdong, China
| | - Liemin Zhou
- Clinical Neuroscience Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
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Chen B, Yang X, Zhan M, Chen Y, Xu J, Xiao J, Xiao H, Song M. Dietary tangeretin improved antibiotic-associated diarrhea in mice by enhancing the intestinal barrier function, regulating the gut microbiota, and metabolic homeostasis. Food Funct 2023; 14:10731-10746. [PMID: 37933488 DOI: 10.1039/d3fo02998k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Antibiotic-associated diarrhea is mediated by antibiotic treatment and is usually caused by the disruption of the intestinal barrier, gut microbiota, and metabolic balance. To identify a dietary strategy that can mitigate the side effects of antibiotics, this study investigated the effect of tangeretin on antibiotic-associated diarrhea in C57BL/6 mice. The results revealed that dietary tangeretin significantly ameliorated symptoms of antibiotic-associated diarrhea, as evidenced by the decreased diarrhea status scores, the reduced fecal water content, the decreased caecum/body weight ratio, and the alleviated colonic tissue damage. Dietary tangeretin also exhibited a protective effect on the intestinal barrier function by upregulating the mRNA and protein expression of claudin-1 and ZO-1. Furthermore, analysis of the gut microbiota using 16S rRNA gene sequencing indicated that dietary tangeretin modulated the gut microbiota of mice with antibiotic-associated diarrhea via increasing the gut microbiota diversity and the abundance of beneficial bacteria, e.g., Lactobacillaceae and Ruminococcaceae, and decreasing the abundance of harmful bacteria, e.g., Enterococcus and Terrisporobacter. Additionally, dietary tangeretin restored the levels of short-chain fatty acids and modulated metabolic pathways by enriching purine metabolism, bile acid metabolism, ABC transporters, and choline metabolism in cancer. Collectively, these findings provide a solid scientific basis for the rational use of tangeretin as a preventive and therapeutic agent for antibiotic-associated diarrhea.
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Affiliation(s)
- Bin Chen
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA.
| | - Xun Yang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Minmin Zhan
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Yilu Chen
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA.
| | - Jingyi Xu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Jie Xiao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Hang Xiao
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA.
| | - Mingyue Song
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
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Zhu S, Xu K, Li S, Yu X, Liu Y, Zhang Q, Zeng L, Xu K, Fu C. Assessment of intestinal status in MPL W515L mutant myeloproliferative neoplasms mice model. Int Immunopharmacol 2023; 125:111091. [PMID: 37883814 DOI: 10.1016/j.intimp.2023.111091] [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: 06/19/2023] [Revised: 09/27/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023]
Abstract
The MPLW515L mutation is a prevalent genetic mutation in patients with myeloproliferative neoplasms (MPN), and utilizing this mutation in mice model can provide important insights into the disease. However, the relationship between intestinal homeostasis and MPN mice model remains elusive. In this study, we utilized a retroviral vector to transfect hematopoietic stem cells with the MPLW515L mutation, creating mutated MPN mice model to investigate their intestinal status. Our results revealed that the MPLW515L in MPN mice model aggravated inflammation in the intestines, decreased the levels of tight junction proteins and receptors for bacteria metabolites. Additionally, there was increased activation of the caspase1/IL-1β signaling pathway and a significant reduction in phos-p38 levels in the intestinal tissue in MPN mice. The MPLW515L mutation also led to up-expression of anti-microbial genes in the intestinal tract. Though the mutation had no impact on the alpha diversity and dominant bacterial taxa, it did influence the rare bacterial taxa/sub-communities and consequently impacted intestinal homeostasis. Our findings demonstrate the significance of MPLW515L mice model for studying MPN disease and highlight the mutation's influence on intestinal homeostasis, including inflammation, activation of the IL-1β signaling pathway, and the composition of gut microbial communities.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China; Department of Hematology, Affliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China; Key Laboratory of Bone Marrow Stem Cells, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Kairen Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Shuyao Li
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xiangru Yu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yahui Liu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Qigang Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China; Department of Hematology, Affliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China; Key Laboratory of Bone Marrow Stem Cells, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China; Department of Hematology, Affliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China; Key Laboratory of Bone Marrow Stem Cells, Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Chunling Fu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China; Department of Hematology, Affliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China; Key Laboratory of Bone Marrow Stem Cells, Xuzhou Medical University, Xuzhou, Jiangsu, China.
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LeBlanc P, Ma L. Microbiome subcommunity learning with logistic-tree normal latent Dirichlet allocation. Biometrics 2023; 79:2321-2332. [PMID: 36222326 PMCID: PMC10090221 DOI: 10.1111/biom.13772] [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: 11/18/2021] [Accepted: 09/26/2022] [Indexed: 11/28/2022]
Abstract
Mixed-membership (MM) models such as latent Dirichlet allocation (LDA) have been applied to microbiome compositional data to identify latent subcommunities of microbial species. These subcommunities are informative for understanding the biological interplay of microbes and for predicting health outcomes. However, microbiome compositions typically display substantial cross-sample heterogeneities in subcommunity compositions-that is, the variability in the proportions of microbes in shared subcommunities across samples-which is not accounted for in prior analyses. As a result, LDA can produce inference, which is highly sensitive to the specification of the number of subcommunities and often divides a single subcommunity into multiple artificial ones. To address this limitation, we incorporate the logistic-tree normal (LTN) model into LDA to form a new MM model. This model allows cross-sample variation in the composition of each subcommunity around some "centroid" composition that defines the subcommunity. Incorporation of auxiliary Pólya-Gamma variables enables a computationally efficient collapsed blocked Gibbs sampler to carry out Bayesian inference under this model. By accounting for such heterogeneity, our new model restores the robustness of the inference in the specification of the number of subcommunities and allows meaningful subcommunities to be identified.
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Affiliation(s)
- Patrick LeBlanc
- Department of Statistical Sciences, Duke University, Durham, North Carolina, USA
| | - Li Ma
- Department of Statistical Sciences, Duke University, Durham, North Carolina, USA
- Department of Biostatistics and Bioinformatics, Duke University Medical School, Durham, North Carolina, USA
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Shan L, Gao M, Pan X, Li W, Wang J, Li H, Tian H. Association between fluoroquinolone exposure and children's growth and development: A multisite biomonitoring-based study in northern China. ENVIRONMENTAL RESEARCH 2022; 214:113924. [PMID: 35868578 DOI: 10.1016/j.envres.2022.113924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 07/07/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Although animal experiments found that antibiotic exposure during early life increased adiposity, limited human epidemiological evidence is available for the effects of veterinary antibiotic exposure on children's growth and development. OBJECTIVE This study was conducted to examine the body burden of fluoroquinolones in northern Chinese children and assess its association with growth and development. METHODS After recruiting 233 children aged 0-15 years from 12 different sites in northern China in 2020, we measured urinary concentrations of 5 respective fluoroquinolones (fleroxacin, ofloxacin, norfloxacin, ciprofloxacin, and enrofloxacin) by high performance liquid chromatography. Categories of children's growth and development were identified based on the Z score of body mass index. The health risks of individual and combined antibiotic exposure were estimated by the hazard quotient (HQ) and hazard index (HI), respectively. The association between children's growth and development with antibiotic concentrations was evaluated via multiple logistic regression analysis. RESULTS In total, 4 antibiotics, fleroxacin, ofloxacin, ciprofloxacin, and enrofloxacin, were found in urine samples of northern Chinese children at an overall frequency of 57.08%. Due to diet and economic differences, antibiotic concentrations in urine samples differed by study area, and the highest concentrations were found in Tianjin, Henan, and Beijing. The percentage of the participants with HQ > 1 caused by ciprofloxacin exposure was 20.61%, and the HI values in 23.18% of samples exceeded 1, suggesting potential health risks. The odds ratio (95% confidence interval) of overweight or obesity risk of tertile 2 of enrofloxacin was 3.01 (1.12, 8.11), indicating an increase in overweight or obesity risk for children with middle-concentration enrofloxacin exposure. CONCLUSION This is the first study to show a positive association of enrofloxacin internal exposure with overweight or obesity risk in children, demonstrating that more attention should be given to the usage and disposal of fluoroquinolones to safeguard children's health.
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Affiliation(s)
- Lixin Shan
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Ming Gao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu, China
| | - Xiaohua Pan
- Qingdao Women and Children's Hospital, Qingdao, 266034, Qingdao, China
| | - Wenjie Li
- Qingdao Women and Children's Hospital, Qingdao, 266034, Qingdao, China
| | - Jingjie Wang
- Qingdao Women and Children's Hospital, Qingdao, 266034, Qingdao, China
| | - Huaxin Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Hua Tian
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China.
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Changes in antibiotic residues and the gut microbiota during ciprofloxacin administration throughout Silkie chicken development. Poult Sci 2022; 102:102267. [PMID: 36442306 PMCID: PMC9709234 DOI: 10.1016/j.psj.2022.102267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 11/23/2022] Open
Abstract
The use of antibiotics leads to antibiotic residues in livestock and poultry products, adversely affecting human health. Ciprofloxacin (CFX) is a broad-spectrum antibiotic shared between animals and humans that is useful in treatments besides infections. However, changes in the gut microbiota caused by CFX and the possible link with the elimination of CFX residues have not been investigated. Herein, we used the Silkie chicken model to study the changes in the gut microbiota during the entire CFX-metabolic repertoire. We detected CFX residues in different tissues and showed that the elimination time of CFX from different tissues was dissimilar (liver > kidney > chest muscle > skin). Analysis of liver and kidney injury biomarkers and plasma antioxidant indices indicated slight hepatotoxicity and nephrotoxicity in the Silkie chickens. Importantly, the changes in the gut microbial community predominantly occurred early in the metabolic process. Correlation analysis revealed that the particular bacterial microbiota were associated with the pharmacokinetics of CFX in different Silkie chicken tissues (e.g., aerobic bacteria, including Escherichia and Coprococcus, and anaerobic bacteria, including Fusobacterium, Ruminococcus, Bifidobacterium, and Eubacterium). Collectively, certain microbiota may boost antibiotic metabolism and participate in restoring the microbial consortia after CFX is metabolized. Therefore, regulating the core intestinal microbiota may reduce foodborne antibiotics and accelerate the development of drug resistance.
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Cuccato M, Scaglione FE, Centelleghe C, Divari S, Biolatti B, Pregel P, Cannizzo FT. Assessment of Antimicrobial Effects on Broiler Gut Barrier Through Histopathology and Immunohistochemistry of Tight-Junction Proteins. Front Vet Sci 2022; 9:830073. [PMID: 35425830 PMCID: PMC9002056 DOI: 10.3389/fvets.2022.830073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/09/2022] [Indexed: 12/04/2022] Open
Abstract
In recent years, antimicrobial (AM) use in poultry farming has been attracting attention worldwide mainly due to AM resistance spreading. The role of AM prophylaxis in the modulation of gut microbiota, as well as of gut health, is still not clearly understood. Therefore, this study aimed to investigate the role of different prophylaxis protocols in the modulation of the gut barrier in broilers by applying a histopathological approach. Intestinal tissue samples were collected from a total of 240 male broilers (Ross 306), reared and treated with different AM protocols. Haematoxylin and Eosin (HE) staining and a multiple scoring system were used to evaluate the presence of lesions in ileum, cecum and colon of treated broilers. Moreover, immunohistochemistry (IHC) was performed to assess the expression of claudin-3 and ZO-1 proteins in intestinal tissues. The application of a semi-quantitative scoring system was used in IHC stained samples. HE results revealed that intestinal tissues were mainly characterized by epithelial detachment and fusion of the intestinal villi, but also by the presence of lymphocytic infiltrate in the mucosa and submucosa of AM-treated broilers. However, the IHC approach for the evaluation of claudin-3 and ZO-1 proteins showed that their expression was not affected by the different AM treatments. Nevertheless, the presence of intestinal lesions highlighted by histopathology suggests that AM treatments could harm the gut health of broilers, inducing an inflammatory response and consequent epithelial lesions. In order to clarify the role of AM treatments in the modulation of gut barrier in broilers, further studies are needed.
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Affiliation(s)
- Matteo Cuccato
- Department of Veterinary Science, University of Turin, Turin, Italy
| | | | - Cinzia Centelleghe
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Sara Divari
- Department of Veterinary Science, University of Turin, Turin, Italy
- *Correspondence: Sara Divari
| | | | - Paola Pregel
- Department of Veterinary Science, University of Turin, Turin, Italy
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Xu J, Ye Y, Ji J, Sun J, Wang JS, Sun X. Untargeted Metabolomic Profiling Reveals Changes in Gut Microbiota and Mechanisms of Its Regulation of Allergy in OVA-Sensitive BALB/c Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3344-3356. [PMID: 35232013 DOI: 10.1021/acs.jafc.1c07482] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Gut microbiota plays an important role in the regulation of food allergy. However, the interactions between the gut flora and immune system are not well studied. Here, we obtained ovalbumin (OVA)-sensitive BALB/c mice, combined with serum untargeted metabolomics to investigate the mechanisms of the interactions. The serum metabolomics results showed that 17 serum metabolites were downregulated, enriched in the aminoacyl-tRNA biosynthesis pathway, whereas indole-3-propionic acid (IPA) was increased. Six operational taxonomic units (OTUs) at the family level were altered and correlated with immune endpoints. Combined metabolomic and microbiomic analyses revealed that IPA levels were correlated with differential bacterial OTUs and a positive correlation with Treg in splenic lymphocytes. These results suggest that the regulatory effects of intestinal flora on allergic responses may be achieved by metabolizing tryptophan to produce indole derivatives and the aminoacyl-tRNA biosynthesis pathway. The formation of OVA tolerance in mice may be related to the enrichment of Peptostreptococcaceae, Ruminococcaceae, and Lactobacillaceae.
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Affiliation(s)
- Jiayuan Xu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yongli Ye
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jian Ji
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jiadi Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jia-Sheng Wang
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, Georgia 30602, United States
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
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Ternák G, Németh M, Rozanovic M, Bogár L. Alzheimer's Disease-Related Dysbiosis Might Be Triggered by Certain Classes of Antibiotics with Time-Lapse: New Insights into the Pathogenesis? J Alzheimers Dis 2022; 87:443-451. [PMID: 35275547 DOI: 10.3233/jad-220018] [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] [Indexed: 01/08/2023]
Abstract
BACKGROUND Several putative factors are identified in the literature as causative agents or risk factors for the development of Alzheimer's disease (AD). The amyloid cascade hypothesis has been the main hypothesis about the pathophysiology of AD for decades, but recent studies raised the possible role of dysbiosis in the development of AD, which prevents memory loss. OBJECTIVE Finding possible associations between antibiotic consumption patterns and the prevalence of AD in European countries. METHODS Antibiotic consumption (European Centre for Disease Prevention and Control, ECDC) for 1997-2007, 2008-2018, and as the whole 1997-2018 period, has been compared to the AD prevalence for 2018 expressed in percentage of the population and statistically analyzed by Pearson calculation. RESULTS A significant positive correlation has been found between the AD prevalence (2018) and the average quinolone consumption for the years 1997-2007 (r: 0.37, p: 0.044). A similar association was not observed for the entire 22 years (1997-2018) of the average quinolone consumption, and the years 2008-2018, indicating 10-20 years of time-lapse between the antibiotic exposure and the development of AD. The ratio of broad-spectrum and narrow-spectrum antibiotics (B/N) estimated in the ECDC database for the years of 2008-2018 showed a strong positive association with AD prevalence (2018) (r: 0.406, p: 0.026) and a positive correlation tendency for the entire 22 years 1997-2018 (r: 0.344, p: 0.063), but none for the years 1997-2007 (r: 0.256, p: 0.241). CONCLUSION Our study indicated the possible sequential role of certain classes of antibiotics in the development of dysbiosis leading to amyloid deposits of AD, which strengthen the possible role of different mediator molecules (short-chain fatty acids, lipopolysaccharides, etc.) produced by the altered microbiome in the development of AD.
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Affiliation(s)
- Gábor Ternák
- University of Pécs, Medical School, Institute of Migration Health, Pécs, Hungary
| | - Márton Németh
- Department of Anesthesiology and Intensive Care, University of Pécs, Medical School, Pécs, Hungary
| | - Martin Rozanovic
- Department of Anesthesiology and Intensive Care, University of Pécs, Medical School, Pécs, Hungary
| | - Lajos Bogár
- Department of Anesthesiology and Intensive Care, University of Pécs, Medical School, Pécs, Hungary
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Zhu S, Liang J, Zhu F, Zhang X, Xu M, Zhao K, Zeng L, Xu K. The effects of myeloablative or non-myeloablative total body irradiations on intestinal tract in mice. Biosci Rep 2021; 41:BSR20202993. [PMID: 33605406 PMCID: PMC7926181 DOI: 10.1042/bsr20202993] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/25/2021] [Accepted: 02/18/2021] [Indexed: 12/12/2022] Open
Abstract
Acute radiation injury caused by high-dose radiation exposure severely impedes the application of radiotherapy in cancer management. To deeply understand the side effects of radiation on intestinal tract, an irradiation murine model was applied and evaluated. C57BL/6 mice were given 4 Gy non-myeloablative irradiation, 8 Gy myeloablative irradiation and non-irradiation (control), respectively. Results demonstrated that the 8 Gy myeloablative irradiations significantly damaged the gut barrier along with decreasing MECA32 and ZO-1. However, a slight increase in MECA32 and ZO-1 was detected in the 4 Gy non-myeloablative irradiations treatment from day 5 to day 10. Further, the irradiations affected the expression of P38 and JNK mitogen-activated protein kinase (MAPK) but not ERK1/2 MAPK signal pathway. Moreover, irradiation had adverse effects on hematopoietic system, altered the numbers and percentages of intestinal inflammatory cells. The IL-17/AhR had big increase in the gut of 4 Gy irradiation mice at day 10 compared with other groups. Both 8 Gy myeloablative and 4 Gy non-myeloablative irradiation disturbed the levels of short-chain fatty acids (SCFAs) in intestine. Meanwhile, high dosage of irradiation decreased the intestinal bacterial diversity and altered the community composition. Importantly, the fatty acids generating bacteria Bacteroidaceae and Ruminococcaceae played key roles in community distribution and SCFAs metabolism after irradiation. Collectively, the irradiation induced gut barrier damage with dosages dependent that led to the decreased p38 MAPK and increased JNK MAPK, unbalanced the mononuclear cells (MNCs) of gut, disturbed intestinal bacterial community and SCFAs level.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Jing Liang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Feng Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Xue Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Mengdi Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Kai Zhao
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
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