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  1. Article ; Online: Preparation of Escherichia coli ghost of anchoring bovine Pasteurella multocida OmpH and its immunoprotective effect.

    Chen, Nannan / Jiang, Dongjun / Liu, Yu / Zhang, Zecai / Zhou, Yulong / Zhu, Zhanbo

    BMC veterinary research

    2023  Volume 19, Issue 1, Page(s) 192

    Abstract: Pasteurella multocida is a pathogen that can infect humans and animals. A ghost is an empty bacterial body devoid of cytoplasm and nucleic acids that can be efficiently presented by antigen-presenting cells. To study a novel ghost vector vaccine with ... ...

    Abstract Pasteurella multocida is a pathogen that can infect humans and animals. A ghost is an empty bacterial body devoid of cytoplasm and nucleic acids that can be efficiently presented by antigen-presenting cells. To study a novel ghost vector vaccine with cross-immune protection, we used bacteriophage PhiX174 RF1 and Pasteurella multocida standard strain CVCC393 as templates to amplify the split genes E and OmpH to construct a bidirectional expression vector E'-OmpH-pET28a-ci857-E. This is proposed to prepare a ghost Escherichia coli (engineered bacteria) capable of attaching and producing Pasteurella multocida OmpH on the inner membrane of Escherichia coli (BL21). The aim is to assess the antibody levels and the effectiveness of immune protection by conducting a mouse immunoprotective test. The bidirectional expression vector E'-OmpH-pET28a-ci857-E was successfully constructed. After induction by IPTG, identification by SDS-PAGE, western blot, ghost culture and transmission electron microscope detection, it was proven that the Escherichia coli ghost anchored to Pasteurella multocida OmpH was successfully prepared. The immunoprotective test in mice showed that the antibody levels of Pasteurella multocida inactivated vaccine, OmpH, ghost (aluminum glue adjuvant) and ghost (Freund's adjuvant) on day 9 after immunization were significantly different from those of the PBS control group (P < 0.01). The immune protection rates were 100%, 80%, 75%, and 65%, respectively, and the PBS negative control was 0%, which proved that they all had specific immune protection effects. Therefore, this study lays the foundation for the further study of ghosts as carriers of novel vaccine-presenting proteins.
    MeSH term(s) Humans ; Animals ; Mice ; Pasteurella multocida/genetics ; Pasteurella multocida/metabolism ; Pasteurella Infections/prevention & control ; Pasteurella Infections/veterinary ; Escherichia coli/genetics ; Bacterial Outer Membrane Proteins/genetics ; Vaccines ; Bacterial Vaccines
    Chemical Substances Bacterial Outer Membrane Proteins ; Vaccines ; Bacterial Vaccines
    Language English
    Publishing date 2023-10-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191675-5
    ISSN 1746-6148 ; 1746-6148
    ISSN (online) 1746-6148
    ISSN 1746-6148
    DOI 10.1186/s12917-023-03743-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: New Insights into the Role and Therapeutic Potential of Heat Shock Protein 70 in Bovine Viral Diarrhea Virus Infection.

    Chen, Nannan / Bai, Tongtong / Wang, Shuang / Wang, Huan / Wu, Yue / Liu, Yu / Zhu, Zhanbo

    Microorganisms

    2023  Volume 11, Issue 6

    Abstract: Bovine viral diarrhea virus (BVDV), a positive-strand RNA virus of the genus Pestivirus in the Flaviviridae family, is the causative agent of bovine viral diarrhea-mucosal disease (BVD-MD). BVDV's unique virion structure, genome, and replication ... ...

    Abstract Bovine viral diarrhea virus (BVDV), a positive-strand RNA virus of the genus Pestivirus in the Flaviviridae family, is the causative agent of bovine viral diarrhea-mucosal disease (BVD-MD). BVDV's unique virion structure, genome, and replication mechanism in the Flaviviridae family render it a useful alternative model for evaluating the effectiveness of antiviral drugs used against the hepatitis C virus (HCV). As one of the most abundant and typical heat shock proteins, HSP70 plays an important role in viral infection caused by the family Flaviviridae and is considered a logical target of viral regulation in the context of immune escape. However, the mechanism of HSP70 in BVDV infection and the latest insights have not been reported in sufficient detail. In this review, we focus on the role and mechanisms of HSP70 in BVDV-infected animals/cells to further explore the possibility of targeting this protein for antiviral therapy during viral infection.
    Language English
    Publishing date 2023-06-01
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms11061473
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The gut microbiota contributes to the infection of bovine viral diarrhea virus in mice.

    Zhang, Zecai / Huang, Jiang / Li, Chuang / Zhao, Zhicheng / Cui, Yueqi / Yuan, Xueying / Wang, Xue / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo

    Journal of virology

    2024  Volume 98, Issue 2, Page(s) e0203523

    Abstract: Bovine viral diarrhea virus (BVDV) is prevalent worldwide and causes significant economic losses. Gut microbiota is a large microbial community and has a variety of biological functions. However, whether there is a correlation between gut microbiota and ... ...

    Abstract Bovine viral diarrhea virus (BVDV) is prevalent worldwide and causes significant economic losses. Gut microbiota is a large microbial community and has a variety of biological functions. However, whether there is a correlation between gut microbiota and BVDV infection and what kind of relation between them have not been reported. Here, we found that gut microbiota composition changed in normal mice after infecting with BVDV, but mainly the low abundance microbe was affected. Interestingly, BVDV infection significantly reduced the diversity of gut microbiota and changed its composition in gut microbiota-dysbiosis mice. Furthermore, compared with normal mice of BVDV infection, there were more viral loads in the duodenum, jejunum, spleen, and liver of the gut microbiota-dysbiosis mice. However, feces microbiota transplantation (FMT) reversed these effects. The data above indicated that the dysbiosis of gut microbiota was a key factor in the high infection rate of BVDV. It is found that the IFN-I signal was involved by investigating the underlying mechanisms. The inhibition of the proliferation and increase in the apoptosis of peripheral blood lymphocytes (PBL) were also observed. However, FMT treatment reversed these changes by regulating PI3K/Akt, ERK, and Caspase-9/Caspase-3 pathways. Furthermore, the involvement of butyrate in the pathogenesis of BVDV was also further confirmed. Our results showed for the first time that gut microbiota acts as a key endogenous defense mechanism against BVDV infection; moreover, targeting regulation of gut microbiota structure and abundance may serve as a new strategy to prevent and control the disease.IMPORTANCEWhether the high infection rate of BVDV is related to gut microbiota has not been reported. In addition, most studies on BVDV focus on
    MeSH term(s) Animals ; Cattle ; Mice ; Bovine Virus Diarrhea-Mucosal Disease/complications ; Bovine Virus Diarrhea-Mucosal Disease/microbiology ; Bovine Virus Diarrhea-Mucosal Disease/therapy ; Bovine Virus Diarrhea-Mucosal Disease/virology ; Butyrates/metabolism ; Caspase 3/metabolism ; Caspase 9/metabolism ; Diarrhea ; Diarrhea Viruses, Bovine Viral/pathogenicity ; Diarrhea Viruses, Bovine Viral/physiology ; Dysbiosis/complications ; Dysbiosis/microbiology ; Dysbiosis/virology ; Extracellular Signal-Regulated MAP Kinases/immunology ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Fecal Microbiota Transplantation ; Gastrointestinal Microbiome ; Interferon Type I/immunology ; Interferon Type I/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Disease Models, Animal
    Chemical Substances Butyrates ; Caspase 3 (EC 3.4.22.-) ; Caspase 9 (EC 3.4.22.-) ; Extracellular Signal-Regulated MAP Kinases (EC 2.7.11.24) ; Interferon Type I ; Phosphatidylinositol 3-Kinases (EC 2.7.1.-) ; Proto-Oncogene Proteins c-akt (EC 2.7.11.1)
    Language English
    Publishing date 2024-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/jvi.02035-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Phlorizin Limits Bovine Viral Diarrhea Virus Infection in Mice via Regulating Gut Microbiota Composition.

    Zhao, Zhicheng / Li, Chuang / Huang, Jiang / Yuan, Xueying / Cui, Yueqi / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo / Zhang, Zecai

    Journal of agricultural and food chemistry

    2024  Volume 72, Issue 17, Page(s) 9906–9914

    Abstract: Phlorizin (PHZ) is one of the main pharmacologically active ingredients ... ...

    Abstract Phlorizin (PHZ) is one of the main pharmacologically active ingredients in
    MeSH term(s) Animals ; Gastrointestinal Microbiome/drug effects ; Mice ; Cattle ; Bacteria/classification ; Bacteria/isolation & purification ; Bacteria/genetics ; Bacteria/drug effects ; Bovine Virus Diarrhea-Mucosal Disease ; Diarrhea Viruses, Bovine Viral/drug effects ; Antiviral Agents/pharmacology ; Antiviral Agents/administration & dosage ; Feces/microbiology ; Feces/virology ; Female ; Mice, Inbred BALB C ; Male
    Chemical Substances Antiviral Agents
    Language English
    Publishing date 2024-04-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/acs.jafc.4c01228
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Short‐term treatment with zingerone ameliorates dextran sulfate sodium‐induced mouse experimental colitis

    Zhang, Zecai / Cui, Yueqi / Liu, Siyu / Huang, Jiang / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo

    Journal of the science of food and agriculture. 2022 Aug. 30, v. 102, no. 11

    2022  

    Abstract: BACKGROUND: Ulcerative colitis (UC) is a relapsing and chronic inflammatory disease of the gastrointestinal tract, which seriously threatens human health. Zingerone (ZO) has been proven to be effective for many diseases. The purpose of this study is to ... ...

    Abstract BACKGROUND: Ulcerative colitis (UC) is a relapsing and chronic inflammatory disease of the gastrointestinal tract, which seriously threatens human health. Zingerone (ZO) has been proven to be effective for many diseases. The purpose of this study is to investigate the protective effects and potential mechanisms of ZO extracted from ginger on dextran sulfate sodium (DSS)‐induced mouse ulcerative colitis (UC). RESULTS: The results showed that ZO alleviated the weight loss of UC model mice, reduced the disease activity index scores, and inhibited the shortening of colon length. ZO also improved DSS‐induced pathological changes in colon tissue and inhibited the secretion of pro‐inflammatory cytokines in colon and mesenteric lymph nodes. Further mechanism analysis found that ZO inhibited DSS‐induced nuclear factor‐κB pathway activation, and regulated peroxisome proliferator‐activated receptor γ (PPARγ) expression. To further explore whether PPARγ was involved in the anti‐UC effect of ZO, PPARγ inhibitor GW9662 was used. Although ZO also showed a protective effect on GW9662‐treated colitis mice, the protective role was significantly weakened. Importantly, the administration of GW9662 significantly aggravated UC compared with the ZO + DSS group. In addition, we preliminarily found that ZO had the effects of inhibiting DSS‐induced oxidative stress, maintaining intestinal barrier, and inhibiting the content of LPS and the population of Escherichia coli. CONCLUSIONS: These results indicated that supplementation with ZO might be a new dietary strategy for the treatment of UC. © 2022 Society of Chemical Industry.
    Keywords Escherichia coli ; agriculture ; colon ; cytokines ; dextran sulfate ; digestive tract ; ginger ; human health ; lymph ; mice ; oxidative stress ; protective effect ; secretion ; ulcerative colitis ; weight loss
    Language English
    Dates of publication 2022-0830
    Size p. 4873-4882.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 184116-6
    ISSN 1097-0010 ; 0022-5142
    ISSN (online) 1097-0010
    ISSN 0022-5142
    DOI 10.1002/jsfa.11850
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Short-term treatment with zingerone ameliorates dextran sulfate sodium-induced mouse experimental colitis.

    Zhang, Zecai / Cui, Yueqi / Liu, Siyu / Huang, Jiang / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo

    Journal of the science of food and agriculture

    2022  Volume 102, Issue 11, Page(s) 4873–4882

    Abstract: Background: Ulcerative colitis (UC) is a relapsing and chronic inflammatory disease of the gastrointestinal tract, which seriously threatens human health. Zingerone (ZO) has been proven to be effective for many diseases. The purpose of this study is to ... ...

    Abstract Background: Ulcerative colitis (UC) is a relapsing and chronic inflammatory disease of the gastrointestinal tract, which seriously threatens human health. Zingerone (ZO) has been proven to be effective for many diseases. The purpose of this study is to investigate the protective effects and potential mechanisms of ZO extracted from ginger on dextran sulfate sodium (DSS)-induced mouse ulcerative colitis (UC).
    Results: The results showed that ZO alleviated the weight loss of UC model mice, reduced the disease activity index scores, and inhibited the shortening of colon length. ZO also improved DSS-induced pathological changes in colon tissue and inhibited the secretion of pro-inflammatory cytokines in colon and mesenteric lymph nodes. Further mechanism analysis found that ZO inhibited DSS-induced nuclear factor-κB pathway activation, and regulated peroxisome proliferator-activated receptor γ (PPARγ) expression. To further explore whether PPARγ was involved in the anti-UC effect of ZO, PPARγ inhibitor GW9662 was used. Although ZO also showed a protective effect on GW9662-treated colitis mice, the protective role was significantly weakened. Importantly, the administration of GW9662 significantly aggravated UC compared with the ZO + DSS group. In addition, we preliminarily found that ZO had the effects of inhibiting DSS-induced oxidative stress, maintaining intestinal barrier, and inhibiting the content of LPS and the population of Escherichia coli.
    Conclusions: These results indicated that supplementation with ZO might be a new dietary strategy for the treatment of UC. © 2022 Society of Chemical Industry.
    MeSH term(s) Animals ; Colitis/chemically induced ; Colitis/drug therapy ; Colon/metabolism ; Cytokines/metabolism ; Dextran Sulfate ; Disease Models, Animal ; Guaiacol/analogs & derivatives ; Guaiacol/therapeutic use ; Mice ; Mice, Inbred C57BL ; PPAR gamma/genetics ; PPAR gamma/metabolism
    Chemical Substances Cytokines ; PPAR gamma ; zingerone (4MMW850892) ; Guaiacol (6JKA7MAH9C) ; Dextran Sulfate (9042-14-2)
    Language English
    Publishing date 2022-03-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 184116-6
    ISSN 1097-0010 ; 0022-5142
    ISSN (online) 1097-0010
    ISSN 0022-5142
    DOI 10.1002/jsfa.11850
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Anti-BVDV Activity of Traditional Chinese Medicine Monomers Targeting NS5B (RNA-Dependent RNA Polymerase) In Vitro and In Vivo.

    Chen, Nannan / Jiang, Dongjun / Shao, Baihui / Bai, Tongtong / Chen, Jinwei / Liu, Yu / Zhang, Zecai / Zhou, Yulong / Wang, Xue / Zhu, Zhanbo

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 8

    Abstract: Natural products have emerged as "rising stars" for treating viral diseases and useful chemical scaffolds for developing effective therapeutic agents. The nonstructural protein NS5B (RNA-dependent RNA polymerase) of NADL strain BVDV was used as the ... ...

    Abstract Natural products have emerged as "rising stars" for treating viral diseases and useful chemical scaffolds for developing effective therapeutic agents. The nonstructural protein NS5B (RNA-dependent RNA polymerase) of NADL strain BVDV was used as the action target based on a molecular docking technique to screen herbal monomers for anti-BVDV viral activity. The in vivo and in vitro anti-BVDV virus activity studies screened the Chinese herbal monomers with significant anti-BVDV virus effects, and their antiviral mechanisms were initially explored. The molecular docking screening showed that daidzein, curcumin, artemisinine, and apigenin could interact with BVDV-NADL-NS5B with the best binding energy fraction. In vitro and in vivo tests demonstrated that none of the four herbal monomers significantly affected MDBK cell activity. Daidzein and apigenin affected BVDV virus replication mainly in the attachment and internalization phases, artemisinine mainly in the replication phase, and curcumin was active in the attachment, internalization, replication, and release phases. In vivo tests demonstrated that daidzein was the most effective in preventing and protecting BALB/C mice from BVDV infection, and artemisinine was the most effective in treating BVDV infection. This study lays the foundation for developing targeted Chinese pharmaceutical formulations against the BVDV virus.
    MeSH term(s) Animals ; Mice ; Diarrhea Viruses, Bovine Viral ; RNA-Dependent RNA Polymerase/metabolism ; Cell Line ; Molecular Docking Simulation ; Curcumin/pharmacology ; Curcumin/metabolism ; Apigenin/pharmacology ; Apigenin/metabolism ; Medicine, Chinese Traditional ; Mice, Inbred BALB C ; Virus Replication ; Viral Nonstructural Proteins/metabolism ; RNA, Viral/metabolism
    Chemical Substances artemisinin (9RMU91N5K2) ; RNA-Dependent RNA Polymerase (EC 2.7.7.48) ; Curcumin (IT942ZTH98) ; Apigenin (7V515PI7F6) ; Viral Nonstructural Proteins ; RNA, Viral
    Language English
    Publishing date 2023-04-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28083413
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  8. Article ; Online: The activation of liver X receptors in Madin-Darby bovine kidney cells and mice restricts infection by bovine viral diarrhea virus.

    Cui, Yueqi / Yuan, Xueying / Zhao, Zhicheng / Li, Chuang / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo / Zhang, Zecai

    Veterinary microbiology

    2023  Volume 288, Page(s) 109948

    Abstract: Bovine viral diarrhea virus (BVDV) is prevalent worldwide and is an important pathogen that represents a serious threat to the development of the cattle industry by causing significant economic losses. Liver X receptors (LXRs) are members of the nuclear ... ...

    Abstract Bovine viral diarrhea virus (BVDV) is prevalent worldwide and is an important pathogen that represents a serious threat to the development of the cattle industry by causing significant economic losses. Liver X receptors (LXRs) are members of the nuclear receptor superfamily and have become attractive therapeutic targets for cardiovascular disease. In the present study, we found that LXRs in both Madin-Darby bovine kidney (MDBK) cells and mice were associated with BVDV infection. GW3965, an agonist for LXRs, significantly inhibited BVDV RNA and protein levels in MDBK cells. In vivo studies in a mouse model also confirmed the inhibitory role of GW3965 in BVDV replication and the ameliorating effect of GW3965 on pathological injury to the duodenum. In vitro investigations of the potential mechanisms involved showed that GW3965 significantly inhibited BVDV-induced increases in cholesterol levels and viral internalization. Furthermore, the antiviral activity of GW3965 was significantly reduced following cholesterol replenishment, thus demonstrating that cholesterol was involved in the resistance of GW3965 to BVDV replication. Further studies indicated the role of ATP-binding cassette transporter A1 (ABCA1) and cholesterol-25-hydroxylase (CH25H) in the antiviral activity of GW3965. We also demonstrated the significant antiviral effect of 25hydroxycholesterol (25HC), a product of the catalysis of cholesterol by CH25H. In addition, the anti-BVDV effects of demethoxycurcumin (DMC), cyanidin-3-O-glucoside (C3G), and saikosaponin-A (SSA), three natural agonizts of LXRs, were also confirmed in both MDBK cells and mice. However, the antiviral activities of these agents were weakened by SR9243, a synthetic inhibitor of LXRs. For the first time, our research demonstrated that the activation of LXRs can exert significant anti-BVDV effects in MDBK cells and mice.
    MeSH term(s) Cattle ; Animals ; Mice ; Cell Line ; Liver X Receptors ; Virus Replication/genetics ; Diarrhea Viruses, Bovine Viral/genetics ; Diarrhea Virus 1, Bovine Viral ; Kidney ; Antiviral Agents/pharmacology ; Cholesterol ; Diarrhea/veterinary
    Chemical Substances GW 3965 ; Liver X Receptors ; Antiviral Agents ; Cholesterol (97C5T2UQ7J)
    Language English
    Publishing date 2023-12-12
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 753154-0
    ISSN 1873-2542 ; 0378-1135
    ISSN (online) 1873-2542
    ISSN 0378-1135
    DOI 10.1016/j.vetmic.2023.109948
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Blockade of BTLA alone or in combination with PD-1 restores the activation and proliferation of CD8

    Liu, Yu / Zhao, Zhibo / Su, Siyu / Li, Yang / Chen, Nannan / He, Linru / Dong, Meiqi / Xu, Bin / Zhang, Zecai / Zhou, Yulong / Zhu, Zhanbo

    Veterinary microbiology

    2024  Volume 290, Page(s) 110004

    Abstract: Bovine viral diarrhea virus (BVDV) infection can result in typical peripheral blood lymphopenia and immune dysfunction. However, the molecular mechanism underlying the onset of lymphopenia remains unclear. B and T lymphocyte attenuator (BTLA) is a novel ... ...

    Abstract Bovine viral diarrhea virus (BVDV) infection can result in typical peripheral blood lymphopenia and immune dysfunction. However, the molecular mechanism underlying the onset of lymphopenia remains unclear. B and T lymphocyte attenuator (BTLA) is a novel immune checkpoint molecule that primarily inhibits activation and proliferation of T cells. Blockade of BTLA with antibodies can boost the proliferation and anti-viral immune functions of T cells. Nonetheless, the immunomodulatory effects of BTLA in CD8
    MeSH term(s) Animals ; CD8-Positive T-Lymphocytes ; Programmed Cell Death 1 Receptor ; Diarrhea Viruses, Bovine Viral ; Diarrhea Virus 1, Bovine Viral ; Lymphopenia/veterinary ; Cell Proliferation
    Chemical Substances Programmed Cell Death 1 Receptor
    Language English
    Publishing date 2024-01-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 753154-0
    ISSN 1873-2542 ; 0378-1135
    ISSN (online) 1873-2542
    ISSN 0378-1135
    DOI 10.1016/j.vetmic.2024.110004
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  10. Article ; Online: Phloretin is protective in a murine salmonella enterica serovar typhimurium infection model

    Zhang, Zecai / Liu, Siyu / Huang, Jiang / Cui, Yueqi / Liu, Yu / Zhou, Yulong / Zhu, Zhanbo

    Microbial Pathogenesis. 2021 Dec., v. 161 p.105298-

    2021  

    Abstract: Salmonella, an important zoonotic pathogen, causes significant morbidity and mortality in both humans and animals. Phloretin mainly isolated from strawberries and apples has the effects of treating inflammation and pathogenic bacteria, but its protective ...

    Abstract Salmonella, an important zoonotic pathogen, causes significant morbidity and mortality in both humans and animals. Phloretin mainly isolated from strawberries and apples has the effects of treating inflammation and pathogenic bacteria, but its protective efficacy and mechanism of action against Salmonella spp. are less clear. In this study, we found that phloretin alleviated body weight loss, colon length shortening, and colonic pathological damage caused by S. Typhimurium. Phloretin also decreased S. Typhimurium translocation to the mesenteric lymph nodes (MLN) and spleen. Further mechanism studies showed that phloretin significantly inhibited inflammation and oxidative stress levels in the colonic tissue. Phloretin also prevented S. Typhimurium-mediated impairment in the colon epithelium barrier by the regulation ZO-1 and occludin levels. Interestingly, phloretin did not inhibit S. typhimurium growth in vitro, but reduced the internalization of S. Typhimurium into Caco-2 cells. Taken together, these findings indicated that phloretin may be a new dietary strategy to combat the disease.
    Keywords Salmonella Typhimurium ; body weight changes ; colon ; epithelium ; inflammation ; lymph ; mechanism of action ; mice ; models ; morbidity ; mortality ; occludins ; oxidative stress ; pathogenesis ; pathogens ; spleen ; Salmonella enterica serover typhimurium ; Phloretin ; Intestinal barrier
    Language English
    Dates of publication 2021-12
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 632772-2
    ISSN 1096-1208 ; 0882-4010
    ISSN (online) 1096-1208
    ISSN 0882-4010
    DOI 10.1016/j.micpath.2021.105298
    Database NAL-Catalogue (AGRICOLA)

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