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Liu Y, Liu G, Fang J. Progress on the mechanisms of Lactobacillus plantarum to improve intestinal barrier function in ulcerative colitis. J Nutr Biochem 2024; 124:109505. [PMID: 37890709 DOI: 10.1016/j.jnutbio.2023.109505] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 10/22/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
Ulcerative colitis (UC) is a chronic, non-specific inflammatory sickness of the intestinal tract, chiefly implicating the rectum and colon, which is characterized by chronic or subacute diarrhea, mucopurulent stools, and abdominal pain. The pathogeny of UC is still uncertain, and it is thought that multiple factors interact to cause the disease, such as environment, genetics, gut microbes, and immunity. Injuring the intestinal barrier is one of the most significant features of UC and includes mechanical, chemical, immune, and biological barriers. Plenty of research has shown that probiotics, as profitable bacteria in the gut, can play a prominent role in the treatment of UC by improving gut barrier function and modulating gut immunity. Lactobacillus plantarum (L. plantarum), a common probiotic, has made outstanding contributions to food and medicine, and many studies in recent years have shown that L. plantarum has great preventive and therapeutic effects on ulcerative colitis and restores the intestinal barrier. This paper reviews the mechanisms of L. plantarum for improving the intestinal barrier function of UC organisms, mainly including regulating the immune response, inhibiting oxidative stress, raising the expression of tight junction (TJ) proteins, promoting the formation of mucin, improving the composition of gut flora, and raising the levels of short-chain fatty acids (SCFAs), which offers some help for the clinical therapy of UC.
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Affiliation(s)
- Yihui Liu
- College of Bioscience and Biotechnology, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Hunan Agricultural University, 1 Nongda Road, Changsha, Hunan 410128, China
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Hunan Agricultural University, 1 Nongda Road, Changsha, Hunan 410128, China.
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Hunan Agricultural University, 1 Nongda Road, Changsha, Hunan 410128, China.
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Yan Z, Liu Z, Ma Y, Yang Z, Liu G, Fang J. Effects of Lactobacillus plantarum and Weissella viridescens on the Gut Microbiota and Serum Metabolites of Mice with Antibiotic-Associated Diarrhea. Nutrients 2023; 15:4603. [PMID: 37960257 PMCID: PMC10648191 DOI: 10.3390/nu15214603] [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: 09/04/2023] [Revised: 10/18/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023] Open
Abstract
Antibiotic-associated diarrhea (AAD) refers to diarrhea caused by gut microbiota disorders after the use of antibiotics, which seriously threatens the health of humans and animals. Therefore, it is necessary to find an effective therapy to treat AAD. This research aimed to explore the effects of Lactobacillus plantarum H-6 (L. plantarum H-6) and Weissella viridescens J-1 (W. viridescens J-1) on alleviating antibiotic-associated diarrhea induced by lincomycin hydrochloride (LH) in mice. The results show that L. plantarum H-6 could significantly reduce the expression of pro-inflammatory factors such as IL-1β and IL-6 in colon tissue. At the same time, L. plantarum H-6 significantly increased the abundance of Lactobacillus and Akkermansia, decreased the abundance of Bacteroides, and increased the contents of L-tryptophan, LysoPC (20:4 (8Z, 11Z, 14Z, 17Z)), reduced riboflavin, threoninyl-methionine, and N-palmitoyl in serum. However, W. viridescens J-1 had little effect on the treatment of AAD. It can be concluded that L. plantarum H-6 can regulate mice's colonic microbial composition, improve their serum metabolic process, and alleviate antibiotic-associated diarrhea. This research may provide a novel therapeutic option for AAD.
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Affiliation(s)
- Zhiwei Yan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Zhuangzhuang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Yong Ma
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Zhao Yang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.Y.); (Z.L.); (Y.M.); (Z.Y.); (G.L.)
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
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Huang C, Hao W, Wang X, Zhou R, Lin Q. Probiotics for the treatment of ulcerative colitis: a review of experimental research from 2018 to 2022. Front Microbiol 2023; 14:1211271. [PMID: 37485519 PMCID: PMC10358780 DOI: 10.3389/fmicb.2023.1211271] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023] Open
Abstract
Ulcerative colitis (UC) has become a worldwide public health problem, and the prevalence of the disease among children has been increasing. The pathogenesis of UC has not been elucidated, but dysbiosis of the gut microbiota is considered the main cause of chronic intestinal inflammation. This review focuses on the therapeutic effects of probiotics on UC and the potential mechanisms involved. In animal studies, probiotics have been shown to alleviate symptoms of UC, including weight loss, diarrhea, blood in the stool, and a shortened colon length, while also restoring intestinal microecological homeostasis, improving gut barrier function, modulating the intestinal immune response, and attenuating intestinal inflammation, thereby providing theoretical support for the development of probiotic-based microbial products as an adjunctive therapy for UC. However, the efficacy of probiotics is influenced by factors such as the bacterial strain, dose, and form. Hence, the mechanisms of action need to be investigated further. Relevant clinical trials are currently lacking, so the extension of animal experimental findings to clinical application requires a longer period of consideration for validation.
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Affiliation(s)
- Cuilan Huang
- Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi Children’s Hospital, Wuxi, China
| | - Wujuan Hao
- Department of Digestive, Affiliated Children’s Hospital of Jiangnan University, Wuxi, China
| | - Xuyang Wang
- Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi Children’s Hospital, Wuxi, China
| | - Renmin Zhou
- Department of Digestive, Affiliated Children’s Hospital of Jiangnan University, Wuxi, China
| | - Qiong Lin
- Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi Children’s Hospital, Wuxi, China
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Jin W, Ai H, Huang Q, Li C, He X, Jin Z, Zuo Y. Preclinical evidence of probiotics in ulcerative colitis: a systematic review and network meta-analysis. Front Pharmacol 2023; 14:1187911. [PMID: 37361217 PMCID: PMC10288114 DOI: 10.3389/fphar.2023.1187911] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
The imbalance of gastrointestinal microbial composition has been identified as the main factor of chronic inflammatory diseases. At present, probiotics have a beneficial effect on the microbial composition of the human gastrointestinal tract, but it is still controversial and the specific mechanism is unknown. The purpose of this network meta-analysis is to compare the mechanism of different probiotics on ulcerative colitis. PubMed, Embase, and Web of Science were searched till 16 November 2022. The SYRCLE risk bias assessment tool was used to assess the quality of the research studies. A total of 42 studies, 839 ulcerative colitis models, and 24 kinds of probiotics were finally included. The results showed that L. rhamnosus has the best effect in relieving weight loss and improving the Shannon index in the ulcerative colitis model. E. faecium has the best effect in reducing colon injury; L. reuteri has the best effect in reducing the DAI; L. acidophilus has the best effect in reducing the HIS index and increasing the expression of tight junction protein ZO-1; and L. coryniformis has the best effect in reducing the content of serum pro-inflammatory factor TNF-α. It indicated that probiotics can improve ulcerative colitis by improving histopathological manifestations, reducing inflammatory reaction, and repairing the mucosal barrier, and different probiotics showed different effects. However, considering the limitations of this study, preclinical studies that require more large samples and high-quality and more reliable and rigorous experimental designs and reports need to be conducted in the future. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/#record details, identifier CRD42022383383.
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Affiliation(s)
- Wenqin Jin
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Huangping Ai
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qingqing Huang
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chuncai Li
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiang He
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhao Jin
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuling Zuo
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Lu Q, Xie Y, Luo J, Gong Q, Li C. Natural flavones from edible and medicinal plants exhibit enormous potential to treat ulcerative colitis. Front Pharmacol 2023; 14:1168990. [PMID: 37324477 PMCID: PMC10268007 DOI: 10.3389/fphar.2023.1168990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic aspecific gut inflammatory disorder that primarily involves the recta and colons. It mostly presents as a long course of repeated attacks. This disease, characterized by intermittent diarrhoea, fecal blood, stomachache, and tenesmus, severely decreases the living quality of sick persons. UC is difficult to heal, has a high recurrence rate, and is tightly related to the incidence of colon cancer. Although there are a number of drugs available for the suppression of colitis, the conventional therapy possesses certain limitations and severe adverse reactions. Thus, it is extremely required for safe and effective medicines for colitis, and naturally derived flavones exhibited huge prospects. This study focused on the advancement of naturally derived flavones from edible and pharmaceutical plants for treating colitis. The underlying mechanisms of natural-derived flavones in treating UC were closely linked to the regulation of enteric barrier function, immune-inflammatory responses, oxidative stress, gut microflora, and SCFAs production. The prominent effects and safety of natural-derived flavones make them promising candidate drugs for colitis treatment.
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Affiliation(s)
- Qiang Lu
- Department of Pharmaceutical Sciences, Zhuhai Campus, Zunyi Medical University, Zhuhai, China
| | - Yuhong Xie
- Department of Pharmacology, Zhuhai Campus, Zunyi Medical University, Zhuhai, China
| | - Jingbin Luo
- China Traditional Chinese Medicine Holdings Company Limited, Foshan, China
| | - Qihai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
- Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Cailan Li
- Department of Pharmacology, Zhuhai Campus, Zunyi Medical University, Zhuhai, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
- Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, Zunyi, China
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Hizay A, Dag K, Oz N, Comak-Gocer EM, Ozbey-Unlu O, Ucak M, Keles-Celik N. Lactobacillus acidophilus regulates abnormal serotonin availability in experimental ulcerative colitis. Anaerobe 2023; 80:102710. [PMID: 36708801 DOI: 10.1016/j.anaerobe.2023.102710] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/06/2023] [Accepted: 01/24/2023] [Indexed: 01/26/2023]
Abstract
OBJECTIVES Probiotics are known to play a beneficial role in curing irritable bowel syndrome such as ulcerative colitis. Commensal Lactobacillus species are thought to play a protective role against ulcerative colitis, as they restore homeostasis in intestinal disorders. Abnormal serotonin availability has been described in ulcerative colitis, but the underlying mechanism is still unclear. The aim of this study was to determine the anti-inflammatory role of Lactobacillus acidophilus (L. acidophilus) and its effect on serotonin expression. METHODS Ulcerative colitis was created with the intrarectal administration of acetic acid. A total of 40 adult male rats were divided into five groups of eight rats as control, sham, experimental colitis, treatment (Colitis + L. acidophilus) and protective group (L. acidophilus + colitis). To evaluate the effects of L. acidophilus on serotonin expression in ulcerative colitis, this bacterial strain was administered orally to the rats with acetic acid-induced colitis. After oral administration of L. acidophilus for 14 days, serotonin content was biochemically measured and serotonin expression was evaluated immunohistochemically. RESULTS The expression of serotonin and its protein content was significantly increased in colitis compared to the control and sham groups. Abnormal serotonin availability in the rats with acetic acid-induced colitis was significantly reduced by the L. acidophilus. CONCLUSIONS In our study, it was observed that the amount of serotonin in the intestinal tissue increased excessively with ulcerative colitis. In addition, L.acidophilus has been found to reduce the abnormally increased amount of serotonin in the colon tissue, as well as reduce the inflammation in the intestinal tissue that occurs with ulcerative colitis. With our findings, it is predicted that probiotic application can be used as a treatment option in ulcerative colitis.
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Affiliation(s)
- Arzu Hizay
- Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
| | - Kubra Dag
- Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
| | - Nuriye Oz
- Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
| | - Emine Mine Comak-Gocer
- Department of Nutrition and Dietetics, Akdeniz University, Faculty of Health Sciences, Antalya, Turkey.
| | - Ozlem Ozbey-Unlu
- Department of Histology and Embryology, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
| | - Melike Ucak
- Department of Histology and Embryology, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
| | - Nigar Keles-Celik
- Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
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Inhibition of GABAAR or Application of Lactobacillus casei Zhang Alleviates Ulcerative Colitis in Mice: GABAAR as a Potential Target for Intestinal Epithelial Renewal and Repair. Int J Mol Sci 2022; 23:ijms231911210. [PMID: 36232509 PMCID: PMC9570049 DOI: 10.3390/ijms231911210] [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: 07/24/2022] [Revised: 09/02/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Emerging evidence indicates that the gamma−aminobutyric acid type A receptor (GABAAR) and Lactobacillus casei Zhang regulate colitis in a variety of ways, such as by participating in host immune and inflammatory responses, altering the gut microbiota, and influencing intestinal barrier function. However, not much is known about the mechanisms by which GABAAR and L. casei affect colon epithelial cell renewal and the interaction between GABAAR and L. casei during this process. To elucidate this, we established a dextran sulfate sodium (DSS)−induced model and measured the mouse body weights, colon length, the disease activity index (DAI), and histological scores. Our results indicated that inhibition of GABAAR alleviated the DSS−induced colitis symptoms, resulting in less weight loss and more intact colon tissue. Moreover, treatment with bicuculline (Bic, a GABAAR inhibitor) increased the levels of PCNA, β−catenin, and TCF4 in mice with colitis. Interestingly, open field test performances showed that inhibition of GABAAR also attenuated colitis−related anxiety−like behavior. By 16S RNA gene sequencing analysis, we showed that inhibition of GABAAR partially reversed the gut dysbacteriosis of DSS−induced mice and increased the abundance of beneficial bacteria. Additionally, L. casei Zhang supplementation inhibited the expression of GABAAR in mice with colitis, promoted the proliferation and renewal of colon epithelial cells, and alleviated anxiety−like behavior and intestinal microflora disorder in mice. Thus, GABAAR plays a key role in the beneficial effects of L. casei on DSS−induced colitis in mice.
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Liu B, Yang L, Wu Y, Zhao X. Protective effect of Limosilactobacillus fermentum HFY06 on dextran sulfate sodium-induced colitis in mice. Front Microbiol 2022; 13:935792. [PMID: 36171753 PMCID: PMC9512270 DOI: 10.3389/fmicb.2022.935792] [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: 05/04/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022] Open
Abstract
Ulcerative colitis is one of the main gastrointestinal diseases that threaten human health. This study investigated the effect of Limosilactobacillus fermentum HFY06 (LF-HFY06) on dextran sulfate sodium (DSS)-induced murine colitis. The protective effect of LF-HFY06 was evaluated by examining the length and histopathological sections of colon, related biochemical indicators, and genes related to inflammation. Direct and microscopic observations showed that LF-HFY06 increased the length of the colon and ameliorated the pathological damage induced by DSS. The biochemical indicators showed that LF-HFY06 enhanced the activities of antioxidant enzymes total superoxide dismutase (T-SOD) and catalase (CAT) in serum, while reducing the level of malondialdehyde (MDA). It was also observed that the serum inflammatory cytokines levels of tumor necrosis factor-α (TNF-α), interferon (IFN)-γ, interleukin (IL)-1β, IL-6, and IL-12 were decreased, and the anti-inflammatory cytokine IL-10 level was increased. The qPCR experiment revealed that LF-HFY06 downregulated the mRNA expression levels of nuclear factor-κB-p65 (Rela), Tnf, Il 1b, Il 6, and prostaglandin-endoperoxide synthase 2 (Ptgs2) in colon tissues, and upregulated the mRNA expression of NF-κB inhibitor-α (Nfkbia) and Il 10. These data indicated that LF-HFY06 inhibited inflammation through the NF-κB signaling pathway to prevent the occurrence and development of colitis. This research demonstrates that probiotics LF-HFY06 have the potential to prevent and treat colitis.
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Affiliation(s)
- Bihui Liu
- Collaborative Innovation Center for Child Nutrition and Health Development, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Research Center of Functional Food, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing, China
- College of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, China
| | - Lei Yang
- Department of Urology, First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Ya Wu
- Collaborative Innovation Center for Child Nutrition and Health Development, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Research Center of Functional Food, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing, China
- College of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, China
| | - Xin Zhao
- Collaborative Innovation Center for Child Nutrition and Health Development, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Research Center of Functional Food, Chongqing University of Education, Chongqing, China
- Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing, China
- *Correspondence: Xin Zhao,
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Hao H, Zhang X, Tong L, Liu Q, Liang X, Bu Y, Gong P, Liu T, Zhang L, Xia Y, Ai L, Yi H. Effect of Extracellular Vesicles Derived From Lactobacillus plantarum Q7 on Gut Microbiota and Ulcerative Colitis in Mice. Front Immunol 2021; 12:777147. [PMID: 34925349 PMCID: PMC8674835 DOI: 10.3389/fimmu.2021.777147] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022] Open
Abstract
Probiotics plays an important role in regulating gut microbiota and maintaining intestinal homeostasis. Extracellular vesicles (EVs) derived from probiotics have emerged as potential mediators of host immune response and anti-inflammatory effect. However, the anti-inflammatory effect and mechanism of probiotics derived EVs on inflammatory bowel disease (IBD) remains unclear. In this study, the effect of Lactobacillus plantarum Q7-derived extracellular vesicles (Q7-EVs) on gut microbiota and intestinal inflammation was investigated in C57BL/6J mice. The results showed that Q7-EVs alleviated DSS-induced colitis symptoms, including colon shortening, bleeding, and body weight loss. Consumption of Q7-EVs reduced the degree of histological damage. DSS-upregulated proinflammatory cytokine levels including IL-6, IL-1β, IL-2 and TNF-α were reduced significantly by Q7-EVs (p < 0.05). 16S rRNA sequencing results showed that Q7-EVs improved the dysregulation of gut microbiota and promoted the diversity of gut microbiota. It was observed that the pro-inflammatory bacteria (Proteobacteria) were reduced and the anti-inflammatory bacteria (Bifidobacteria and Muribaculaceae) were increased. These findings indicated that Q7-EVs might alleviate DSS-induced ulcerative colitis by regulating the gut microbiota.
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Affiliation(s)
- Haining Hao
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xinyi Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Lingjun Tong
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Qiqi Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xi Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Yushan Bu
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Pimin Gong
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Tongjie Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Lanwei Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Yongjun Xia
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Lianzhong Ai
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Huaxi Yi
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
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