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Akhlaghi H, Javan AJ, Chashmi SHE. Helicobacter pullorum and Helicobacter canadensis: Etiology, pathogenicity, epidemiology, identification, and antibiotic resistance implicating food and public health. Int J Food Microbiol 2024; 413:110573. [PMID: 38246022 DOI: 10.1016/j.ijfoodmicro.2024.110573] [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: 10/19/2023] [Revised: 12/29/2023] [Accepted: 01/07/2024] [Indexed: 01/23/2024]
Abstract
Nowadays, it is well-established that the consumption of poultry meat, especially chicken meat products has been drastically increasing. Even though more attentions are being paid to the major foodborne pathogens, it seems that scientists in the area of food safety and public health would prefer tackling the minor food borne zoonotic emerging or reemerging pathogens, namely Helicobacter species. Recently, understanding the novel aspects of zoonotic Enterohepatic Helicobacter species, including pathogenesis, isolation, identification, and genomic features is regarded as a serious challenge. In this regard, considerable attention is given to emerging elusive zoonotic Enterohepatic Helicobacter species, comprising Helicobacter pullorum and Helicobacter canadensis. In conclusion, the current review paper would attempt to elaborately summarize and somewhat compare the etiology, pathogenesis, cultivation process, identification, genotyping, and antimicrobial resistance profile of both H. pullorum and H. Canadensis. Further, H. pullorum has been introduced as the most significant food borne pathogen in chicken meat products.
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Affiliation(s)
- Hosein Akhlaghi
- Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| | - Ashkan Jebelli Javan
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran.
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Xu L, Liu X, Wu Q, Hua ZL, Yang F, Zhang JF. Phylogenetic analysis of pathogenic genes in Helicobacter species. Shijie Huaren Xiaohua Zazhi 2024; 32:58-70. [DOI: 10.11569/wcjd.v32.i1.58] [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: 11/10/2023] [Revised: 12/01/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Helicobacter bacteria are associated with gastrointestinal diseases, especially Helicobacter pylori (H. pylori). With the isolation of many non-Helicobacter pylori Helicobacters (NHPH) from the liver, intestines, and gallbladder of natural animal reservoirs, NHPH have been potential zoonotic pathogens, but their infection and pathogenic mechanisms are still unclear.
AIM To explore the phylogenetic relationship of Helicobacter species based on their pathogenic genes.
METHODS The present study collected the genomic sequences of 50 strains in genus Helicobacter, including 12 strains of H. pylori and 38 strains of NHPH. Based on 16S rRNA gene and several pathogenic genes (flagella, urease, and virulence factors), MAGA software (Version 11.0) was used to align their sequences and construct phylogenetic trees.
RESULTS The phylogenetic tree of 16S rRNA gene showed that gastric Helicobacter (GH) and enterohepatic Helicobacter species (EHS) were clustered into two large branches, respectively. All of the GH's hosts were mammals, while the hosts of EHS were many wild poultry and mammals. Based on the flagella motility-related genes (flaA, flaB, fliP, fliQ, fliR, fliG, fliM, and fliN), the phylogenetic trees were divided into two major branches (GH and EHS). Similarly, the phylogenetic trees of lipopolysaccharide (LPS) biosynthesis-related genes (lptA, waaC, and waaF) presented two major branches (GH and EHS), too. The urease genes existed in all of the 12 strains of H. pylori, 13 strains of gastric NHPH, and 4 strains of EHS (H. hepaticus, H. muridarum, H. bilis, and H. anseris). However, no significant phylogenetic patterns of GH and EHS were observed in the seven urease genes (ureA, ureB, ureE, ureF, ureG, ureH, and ureI).
CONCLUSION The phylogenetic relationship of Helicobacter species' pathogenic genes is dominated distinctly by the special colonization areas including gastric and enterohepatic niches.
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Affiliation(s)
- Le Xu
- School of Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Xing Liu
- School of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu Province, China
| | - Qi Wu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhao-Lai Hua
- Institute of Tumor Prevention and Control, People's Hospital of Yangzhong City, Zhenjiang 212299, Jiangsu Province, China
| | - Fei Yang
- School of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu Province, China
| | - Jun-Feng Zhang
- School of Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
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Mohammadi M, Attar A, Mohammadbeigi M, Peymani A, Bolori S, Fardsanei F. The possible role of Helicobacter pylori in liver diseases. Arch Microbiol 2023; 205:281. [PMID: 37430019 DOI: 10.1007/s00203-023-03602-z] [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: 02/27/2023] [Revised: 05/15/2023] [Accepted: 05/29/2023] [Indexed: 07/12/2023]
Abstract
According to previous studies, Helicobacter pylori infection is associated with liver disease. In order to better understand the risk of acquiring various liver diseases, we reviewed current knowledge on the impact of H. pylori on the onset, intensification, and progression of various liver diseases caused by the infection of H. pylori. It has been estimated that between 50 and 90% of people worldwide have been infected with H. pylori. The bacterium is mostly responsible for inflamed gastric mucosa, ulcers, and cancers associated with the gastric mucosa. Through the active antioxidant system in H. pylori, the bacteria can neutralize free radicals by synthesizing VacA, a toxin that causes cell damage and apoptosis. Furthermore, there is a possibility that CagA genes may play a role in cancer development. People who have been infected with H. pylori are likely to develop lesions in the skin, the circulation system, and the pancreas. Moreover, transferring blood from the stomach may allow H. pylori to colonize the liver. The bacterium worsened liver function during autoimmune inflammation, toxic injury, chronic HCV infection, chronic HBV infection, and liver cirrhosis. Increasing portal pressure, hyperammonemia, and esophageal varices may be associated with H pylori infection. As a result, it is crucial to diagnose and treat this infection in patients with H. pylori.
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Affiliation(s)
- Mahnaz Mohammadi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Adeleh Attar
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Maryam Mohammadbeigi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amir Peymani
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Shahin Bolori
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Fatemeh Fardsanei
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
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Butt J, Schmitz M, Berkus B, Schmidt K, Höfler D. Validation of Multiplex PCR and Serology Detecting Helicobacter Species in Mice. Microorganisms 2023; 11:microorganisms11020249. [PMID: 36838214 PMCID: PMC9963394 DOI: 10.3390/microorganisms11020249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/21/2023] Open
Abstract
High-throughput multiplexed assays are needed to simplify detection of Helicobacter species in experimental infection and routine health monitoring of laboratory mice. Therefore, fluorescent bead-based hybridization assays for Helicobacter sp. DNA and serology were developed. Multiplex PCR amplicons (H. hepaticus, H. bilis, H. typhlonius, H. pylori, H. muridarum, H. pullorum, H. cinaedi, H. heilmanii, C. jejuni) and antibodies against H. pylori, H. hepaticus, H. bilis were assessed in naturally and experimentally infected mice, and results compared to conventional PCR. Species-specific and sensitive detection of seven Helicobacter spp. <100 copies/PCR, and of two species <1000 copies/PCR was successfully established in the Helicobacter multiplex DNA finder. The novel assay was highly comparable with conventional PCR (kappa = 0.98, 95%CI: 0.94-1.00). Antibody detection of H. hepaticus and H. bilis showed low sensitivity (71% and 62%, respectively) and cross-reactivity in H. typhlonius-infected mice. Infection experiments showed that antibodies develop earliest two weeks after DNA detection in feces. In conclusion, detection of Helicobacter antibodies showed low sensitivity depending on the timing relative to infection. However, Helicobacter multiplex DNA finder is a sensitive and specific high-throughput assay applicable in routine health monitoring for laboratory animals.
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Affiliation(s)
- Julia Butt
- Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Mareike Schmitz
- Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Bernhard Berkus
- Microbiological Diagnostics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Katja Schmidt
- Microbiological Diagnostics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Daniela Höfler
- Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Correspondence:
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Gibson K, Chu JK, Zhu S, Nguyen D, Mrázek J, Liu J, Hoover TR. A Tripartite Efflux System Affects Flagellum Stability in Helicobacter pylori. Int J Mol Sci 2022; 23:ijms231911609. [PMID: 36232924 PMCID: PMC9570263 DOI: 10.3390/ijms231911609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/23/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022] Open
Abstract
Helicobacter pylori uses a cluster of polar, sheathed flagella for swimming motility. A search for homologs of H. pylori proteins that were conserved in Helicobacter species that possess flagellar sheaths but were underrepresented in Helicobacter species with unsheathed flagella identified several candidate proteins. Four of the identified proteins are predicted to form part of a tripartite efflux system that includes two transmembrane domains of an ABC transporter (HP1487 and HP1486), a periplasmic membrane fusion protein (HP1488), and a TolC-like outer membrane efflux protein (HP1489). Deleting hp1486/hp1487 and hp1489 homologs in H. pylori B128 resulted in reductions in motility and the number of flagella per cell. Cryo-electron tomography studies of intact motors of the Δhp1489 and Δhp1486/hp1487 mutants revealed many of the cells contained a potential flagellum disassembly product consisting of decorated L and P rings, which has been reported in other bacteria. Aberrant motors lacking specific components, including a cage-like structure that surrounds the motor, were also observed in the Δhp1489 mutant. These findings suggest a role for the H. pylori HP1486-HP1489 tripartite efflux system in flagellum stability. Three independent variants of the Δhp1486/hp1487 mutant with enhanced motility were isolated. All three motile variants had the same frameshift mutation in fliL, suggesting a role for FliL in flagellum disassembly.
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Affiliation(s)
- Katherine Gibson
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
| | - Joshua K. Chu
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
| | - Shiwei Zhu
- Microbial Sciences Institute, Yale University, West Haven, CT 06516, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, CT 06536, USA
| | - Doreen Nguyen
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
| | - Jan Mrázek
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
- Institute of Bioinformatics, University of Georgia, Athens, GA 30602, USA
| | - Jun Liu
- Microbial Sciences Institute, Yale University, West Haven, CT 06516, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, CT 06536, USA
| | - Timothy R. Hoover
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
- Correspondence: ; Tel.: +1-706-542-2675
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Lupu A, Miron IC, Cianga AL, Cernomaz AT, Lupu VV, Gavrilovici C, Stârcea IM, Tarca E, Ghica DC, Fotea S. The Prevalence of Liver Cytolysis in Children with Helicobacter pylori Infection. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9101498. [PMID: 36291434 PMCID: PMC9600054 DOI: 10.3390/children9101498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022]
Abstract
(1) Background: The relationship between Helicobacter pylori (H. pylori) infection and liver disease has been discussed for many years, but the association between the infection and liver cytolysis in children has been insufficiently explored. In our study, we evaluate this relationship in a pediatric population from the northeast of Romania. (2) Methods: A retrospective study of children with H. pylori infection and liver cytolysis was conducted on a group of 1757 children, admitted to a pediatric gastroenterology regional center in northeast Romania over 3 years. (3) Results: Liver cytolysis syndrome was present in 112 children of both sexes. Of the 112 children, 20 children (17.9%) also had H. pylori infection. In the statistical analysis, we noted a significant association between liver cytolysis syndrome and H. pylori infection (χ2; p < 0.001). (4) Conclusions: This relationship requires further in-depth studies that also consider certain parameters that may influence the results of these correlations. In addition, we point out the need for further analyses evaluating, in terms of the histopathological changes in each liver disease, the efficacy of H. pylori eradication.
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Affiliation(s)
- Ancuta Lupu
- Pediatrics Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Ingrith Crenguta Miron
- Pediatrics Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Anca Lavinia Cianga
- Pediatrics Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Andrei Tudor Cernomaz
- III-rd Medical Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Vasile Valeriu Lupu
- Pediatrics Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Correspondence:
| | - Cristina Gavrilovici
- Pediatrics Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | - Elena Tarca
- Department of Pediatric Surgery, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Dragos Catalin Ghica
- Preventive Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Silvia Fotea
- Pediatrics Department, Faculty of Medicine and Pharmacy, “Dunarea de Jos” University of Galati, 800008 Galati, Romania
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Methylation-Independent Chemotaxis Systems Are the Norm for Gastric-Colonizing Helicobacter Species. J Bacteriol 2022; 204:e0023122. [PMID: 35972258 PMCID: PMC9487461 DOI: 10.1128/jb.00231-22] [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: 11/20/2022] Open
Abstract
Many bacteria and archaea rely on chemotaxis signal transduction systems for optimal fitness. These complex, multiprotein signaling systems have core components found in all chemotactic microbes, as well as variable proteins found in only some species. We do not yet understand why these variations exist or whether there are specific niches that favor particular chemotaxis signaling organization. One variation is in the presence/absence of the chemotaxis methylation adaptation enzymes CheB and CheR. Genes for CheB and CheR are missing in the gastric pathogen Helicobacter pylori but present in related Helicobacter that colonize the liver or intestine. In this work, we asked whether there was a general pattern of CheB/CheR across multiple Helicobacter species. Helicobacter spp. all possess chemotactic behavior, based on the presence of genes for core signaling proteins CheA, CheW, and chemoreceptors. Genes for the CheB and CheR proteins, in contrast, were variably present. Niche mapping supported the idea that these genes were present in enterohepatic Helicobacter species and absent in gastric ones. We then analyzed whether there were differences between gastric and enterohepatic species in the CheB/CheR chemoreceptor target methylation sites. Indeed, these sites were less conserved in gastric species that lack CheB/CheR. Lastly, we determined that cheB and cheR could serve as markers to indicate whether an unknown Helicobacter species was of enterohepatic or gastric origin. Overall, these findings suggest the interesting idea that methylation-based adaptation is not required in specific environments, particularly the stomach. IMPORTANCE Chemotaxis signal transduction systems are common in the archaeal and bacterial world, but not all systems contain the same components. The rationale for this system variation remains unknown. In this report, comparative genomics analysis showed that the presence/absence of CheR and CheB is one main variation within the Helicobacter genus, and it is strongly associated with the niche of Helicobacter species: gastric Helicobacter species, which infect animal stomachs, have lost their CheB and CheR, while enterohepatic Helicobacter species, which infect the liver and intestine, retain them. This study not only provides an example that a chemotaxis system variant is associated with particular niches but also proposes that CheB and CheR are new markers distinguishing gastric from enterohepatic Helicobacter species.
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Hashimoto K, Nagao Y, Nambara S, Tsuda Y, Kudou K, Kusumoto E, Sakaguchi Y, Kusumoto T, Ikejiri K. Association Between Anti-Helicobacter pylori Antibody Seropositive and De Novo Gallstone Formation After Laparoscopic Sleeve Gastrectomy for Japanese Patients with Severe Obesity. Obes Surg 2022; 32:3404-3409. [PMID: 36006591 DOI: 10.1007/s11695-022-06253-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Patients who have undergone bariatric surgery are at risk for gallstone formation. However, the incidence of gallstone formation after bariatric surgery has not been adequately studied in the Japanese population. We aimed to elucidate the incidence and risk factors for gallstone formation after laparoscopic sleeve gastrectomy (LSG) for Japanese patients with severe obesity. METHODS We conducted a retrospective cohort study among patients with severe obesity treated with LSG between April 2017 and June 2020 at two institutions. Patients who had received previous cholecystectomy, had preoperative gallstones, and had received postoperative prophylactic ursodeoxycholic acid were excluded. Body weight, body mass index, and blood data were collected at each follow-up visit before and after the surgery. Follow-up abdominal ultrasonography was performed 6-12 months after surgery, and the incidence of gallstones was calculated. The association between the data and gallstone formation was evaluated. RESULTS During the study period, we performed LSG for 98 patients. Of these, 61 cases remained by above conditions and were examined using abdominal ultrasonography over 6 months after surgery. The incidence of gallstones was 23.0% and that of symptomatic gallstones was 3.3%. Anti-Helicobacter pylori antibody seropositive and titer were the only factors that showed significant association with de novo gallstone formation after LSG. CONCLUSIONS Anti-Helicobacter pylori antibody seropositive may be associated with de novo gallstone formation after LSG for Japanese patients with severe obesity.
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Affiliation(s)
- Kenkichi Hashimoto
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan. .,Department of Surgery, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital, 1-9-6 Senda-machi, Naka-ku, Hiroshima, 730-8619, Japan.
| | - Yoshihiro Nagao
- Center for Integration of Advanced Medicine, Life Science and Innovative Technology, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Sho Nambara
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Yasuo Tsuda
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Kensuke Kudou
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Eiji Kusumoto
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Yoshihisa Sakaguchi
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Tetsuya Kusumoto
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
| | - Koji Ikejiri
- Department of Gastroenterological Surgery/Clinical Research Institute, National Kyushu Medical Center, 1-8-1 Jigyohama, Chuo-ku, Fukuoka, 810-8563, Japan
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Helicobacter bilis Contributes to the Occurrence of Inflammatory Bowel Disease by Inducing Host Immune Disorders. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1837850. [PMID: 35983246 PMCID: PMC9381287 DOI: 10.1155/2022/1837850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/17/2022] [Accepted: 07/20/2022] [Indexed: 11/29/2022]
Abstract
Gut microbiota coevolve with humans to achieve a symbiotic relationship, which ultimately leads to physiological homeostasis. A variety of diseases can occur once this balance is disrupted. Helicobacter bilis (H. bilis) is an opportunistic pathogen in humans, triggering multiple diseases, including inflammatory bowel disease (IBD). IBD is a chronic immunologically mediated inflammation of the human gastrointestinal tract, and its occurrence is closely related to the gut microbiota. Several studies have demonstrated that H. bilis colonization is associated with IBD, and its mechanism is related to host immunity. However, few studies have investigated these mechanisms of action. Therefore, this article is aimed at reviewing these studies and summarizing the mechanisms of H. bilis-induced IBD from two perspectives: adaptive immunity and innate immunity. Furthermore, this study provides a preliminary discussion on treating H. bilis-related IBD. In addition, we also demonstrated that H. bilis played an important role in promoting the carcinogenesis of IBD and discussed its mechanism.
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Yamashita M, Adachi T, Ono S, Yoshino K, Imamura H, Matsushima H, Tanaka T, Kosaka T, Soyama A, Hidaka M, Kanetaka K, Eguchi S. Helicobacter bilis infection induces oxidative stress in and enhances the proliferation of human cholangiocytes. Helicobacter 2022; 27:e12908. [PMID: 35661483 DOI: 10.1111/hel.12908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 05/02/2022] [Accepted: 05/17/2022] [Indexed: 12/26/2022]
Abstract
BACKGROUND Helicobacter bilis, an enterohepatic Helicobacter species, represents a carcinogenic risk factor for cholangiocytes owing to the prevalence of infections in patients with biliary tract cancer, cholecystitis, and pancreaticobiliary maljunction. However, the effect of H. bilis infection on cholangiocytes and the process and mechanism of carcinogenesis are not known. We aimed to determine the effects of H. bilis on cholangiocytes, focusing on inflammation and oxidative stress. MATERIALS AND METHODS Helicobacter bilis and MMNK-1 cells were cocultured for 24 h and inflammatory cytokine secretion was evaluated. Furthermore, MMNK-1 cell proliferation, intracellular reactive oxidant species (ROS) production, and DNA damage caused by ROS were investigated. All factors were compared with and without H. bilis infection. RESULTS Interleukin (IL)-6 and IL-8 secretion were significantly increased in MMNK-1 cocultures with H. bilis (IL-6, 24.3 ± 12.2 vs. 271.1 ± 286.4 pg/ml; IL-8, 167.6 ± 78.7 vs. 1085.1 ± 1047.1 pg/ml, p < .05). MMNK-1 proliferation was also significantly higher in H. bilis cocultures (1.05 ± 0.02 vs. 1.00-fold, respectively; p < .05). Coculturing enhanced the production of ROS in MMNK-1 cells depending on the cell concentration of H. bilis (1.0 vs. 1.17 ± 0.06, p < .05); however, DNA injury was not observed in cocultures with H. bilis (5.35 ± 0.87 vs. 6.08 ± 0.55 pg/μl, p = .06). CONCLUSIONS Helicobacter bilis infection induced ROS production in and enhanced the proliferation of cholangiocytes.
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Affiliation(s)
- Mampei Yamashita
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomohiko Adachi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shinichiro Ono
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kyohei Yoshino
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hajime Imamura
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hajime Matsushima
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takayuki Tanaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Taichiro Kosaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Akihiko Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kengo Kanetaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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11
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Neubert V, Sadek A, Burell T, Ralser A, Erhard M, Gerhard M, Seidel K, Kalali B. Validation and improvement of a multiplex PCR method to detect murine Helicobacter species in feces samples of mice. Helicobacter 2022; 27:e12888. [PMID: 35363924 DOI: 10.1111/hel.12888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/28/2022] [Accepted: 03/15/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND Murine Helicobacter species have gained increasing awareness in mouse facilities over the last years. Infections with Helicobacter species may have an impact effect on the health of mice and might pose a zoonotic risk to researchers. To minimize the interference with experiments and hence contribute to the 3Rs, a reliable method of monitoring Helicobacter infections in animal facilities needs to be available. The aim of this study was to improve and validate the detection of the most common murine Helicobacter species. MATERIAL AND METHODS A multiplex PCR assay was developed for identification of Helicobacter hepaticus, H. bilis, H. muridarum, H. rodentium, and H. typhlonius that could simultaneously detect these five strains in fecal samples. To ensure the quality of the results, the method was validated based on recommendations for in-house developed tests. RESULTS The method established was highly sensitive and specific. All five strains were detectable with a detection limit of 102 bacteria. Eight different mouse facilities were tested with the validated assay, and the following prevalence were found: H. rodentium 57%, H. hepaticus 46%, H. typhlonius 17%, H. bilis 12%, and H. muridarum 0%. CONCLUSION The multiplex PCR is a reliable, economic, and time-saving diagnostic tool for routine health monitoring. Further prevalence studies are needed to confirm the high prevalence and hence importance of H. rodentium, as until now this agent is not yet listed in FELASA recommendations.
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Affiliation(s)
- Vanessa Neubert
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
| | - Ahmed Sadek
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
| | - Teresa Burell
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
| | - Anna Ralser
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
| | - Michael Erhard
- Department of Veterinary Sciences, Chair of Animal Welfare, Ethology, Animal Hygiene and Animal Housing, Ludwig-Maximilians-University, Munich, Germany
| | - Markus Gerhard
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany.,German Center for Infection Research, Partner Site Munich, Munich, Germany
| | - Karin Seidel
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
| | - Behnam Kalali
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, Munich, Germany
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12
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Fatemi Khader M, Pourmahdi Borujeni M, Moori Bakhtiari N, Avizeh R. An exploratory study on the presence of
Helicobacter heilmannii
and
Helicobacter billis
in the faces of companion dogs. Vet Med Sci 2022; 8:537-545. [PMID: 35152551 PMCID: PMC8959293 DOI: 10.1002/vms3.765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background Companion animals like dogs play an important role in the lives of many people and are often considered to be members of families, but definitely, any contact with them poses an inherent risk of transmitting zoonotic pathogens. One of these pathogens is the genus Helicobacter which is linked to many disorders in human and animal. Objectives The aim of this study was to investigate the presence of some zoonotic species of genus Helicobacter in companion dogs. Results Through culturing in a special medium, nine samples (9%) were detected as infected (two pure and seven mixed culture). Based on multiplex‐PCR, 13 samples (13%) were infected by Helicobacter spp. although none of them were infected by H. pylori. Species‐specific PCR indicated that 38.5% or 5/13 of the samples were infected with H. heilmannii, while 15.45% or 2/13 of the samples were infected by H. billis. Multivariate logistic regression analysis showed that the age factor had a significant effect on Helicobacter spp. infection (odds ratio [OR] = 2.42, p = 0.01). Conclusion This study revealed the negligible faecal transmission of H. pylori. Moreover, due to the detection of H. Heilmannii and H. billis in feces and their association with human gastric diseases, dog owners should be educated about the risks and transmission modes of zoonotic bacterial infections of dogs.
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Affiliation(s)
- Mahdi Fatemi Khader
- Department of Food Hygiene, Faculty of Veterinary Medicine Shahid Chamran University of Ahvaz Ahvaz Iran
| | - Mahdi Pourmahdi Borujeni
- Department of Food Hygiene, Faculty of Veterinary Medicine Shahid Chamran University of Ahvaz Ahvaz Iran
| | - Naghmeh Moori Bakhtiari
- Department of Pathobiology, Faculty of Veterinary Medicine Shahid Chamran University of Ahvaz Ahvaz Iran
| | - Reza Avizeh
- Department of Clinical Sciences, Faculty of Veterinary Medicine Shahid Chamran University of Ahvaz Ahvaz Iran
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13
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Friedrich V, Forné I, Matzek D, Ring D, Popper B, Jochum L, Spriewald S, Straub T, Imhof A, Krug A, Stecher B, Brocker T. Helicobacter hepaticus is required for immune targeting of bacterial heat shock protein 60 and fatal colitis in mice. Gut Microbes 2022; 13:1-20. [PMID: 33550886 PMCID: PMC7889221 DOI: 10.1080/19490976.2021.1882928] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Gut microbiota and the immune system are in constant exchange shaping both host immunity and microbial communities. Here, improper immune regulation can cause inflammatory bowel disease (IBD) and colitis. Antibody therapies blocking signaling through the CD40-CD40L axis showed promising results as these molecules are deregulated in certain IBD patients. To better understand the mechanism, we used transgenic DC-LMP1/CD40 animals with a constitutive CD40-signal in CD11c+ cells, causing a lack of intestinal CD103+ dendritic cells (DCs) and failure to induce regulatory T (iTreg) cells. These mice rapidly develop spontaneous fatal colitis, accompanied by dysbiosis and increased inflammatory IL-17+IFN-γ+ Th17/Th1 and IFN-γ + Th1 cells. In the present study, we analyzed the impact of the microbiota on disease development and detected elevated IgA- and IgG-levels in sera from DC-LMP1/CD40 animals. Their serum antibodies specifically bound intestinal bacteria, and by proteome analysis, we identified a 60 kDa chaperonin GroEL (Hsp60) from Helicobacter hepaticus (Hh) as the main specific antigen targeted in the absence of iTregs. When re-derived to a different Hh-free specific-pathogen-free (SPF) microbiota, mice showed few signs of disease, normal microbiota, and no fatality. Upon recolonization of mice with Hh, the disease developed rapidly. Thus, the present work identifies GroEL/Hsp60 as a major Hh-antigen and its role in disease onset, progression, and outcome in this colitis model. Our results highlight the importance of CD103+ DC- and iTreg-mediated immune tolerance to specific pathobionts to maintain healthy intestinal balance.
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Affiliation(s)
- Verena Friedrich
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Ignasi Forné
- Protein Analysis Unit, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Dana Matzek
- Core Facility Animal Models, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Diana Ring
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Bastian Popper
- Core Facility Animal Models, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lara Jochum
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Stefanie Spriewald
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Tobias Straub
- Core Facility Bioinformatics, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Axel Imhof
- Protein Analysis Unit, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Anne Krug
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Bärbel Stecher
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany,German Center for Infection Research (DZIF), Partner Site, Munich, Germany
| | - Thomas Brocker
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany,CONTACT Thomas Brocker Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich82152, Germany
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14
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Ren S, Zhou Y, Xuan R. Research progress in the role of gut microbiota and its metabolites in intrahepatic cholestasis of pregnancy. Expert Rev Gastroenterol Hepatol 2021; 15:1361-1366. [PMID: 34845962 DOI: 10.1080/17474124.2021.2011211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Intrahepatic cholestasis of pregnancy (ICP) is a liver disease that occurs during pregnancy. While ICP has a minimal impact on the mother, it primarily affects the pregnancy outcome of fetus, resulting in spontaneous miscarriage and even the intrauterine death of fetus. AREAS COVERED This review covers current progress in the role of gut microbiota and bile acids in ICP. EXPERT OPINION The causes and pathogenesis of ICP are currently unclear, and the serum bile acid level is the main clinical evidence for ICP diagnosis. The gastrointestinal tract is home to a tremendous number and type of microbes, which play critical roles in the synthesis and metabolism of bile acids. Studies in recent years have shown that the changes in gut microbiota and bile acid metabolic profiles are closely associated with ICP. This review discusses some of the future prospects in this area of research.
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Affiliation(s)
- Shuaijun Ren
- Department of Obstetrics and Gynecology, The Affiliated Hospital of School of Medicine of Ningbo University, Ningbo, China.,School of Medicine of Ningbo University, Ningbo, China
| | - Yuping Zhou
- Department of Gastroenterology, The Affiliated Hospital of School of Medicine of Ningbo University, Ningbo, China.,Institute of Digestive Disease of Ningbo University, Ningbo, China
| | - Rongrong Xuan
- Department of Obstetrics and Gynecology, The Affiliated Hospital of School of Medicine of Ningbo University, Ningbo, China
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15
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Damaceno QS, Gallotti B, Reis IMM, Totte YCP, Assis GB, Figueiredo HC, Silva TF, Azevedo V, Nicoli JR, Martins FS. Isolation and Identification of Potential Probiotic Bacteria from Human Milk. Probiotics Antimicrob Proteins 2021; 15:491-501. [PMID: 34671923 DOI: 10.1007/s12602-021-09866-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2021] [Indexed: 10/20/2022]
Abstract
Breast milk was long considered a sterile environment, but now it is known to harbor many bacteria that will shape the newborn microbiota. The benefits of breastfeeding to newborn health are, on some level, related to the presence of beneficial bacteria in human milk. Therefore, this study aims to investigate and isolate potential probiotics present in human milk that might be associated with improved health in infants, being potential candidates to be used in simulated human milk formula. Milk samples of 24 healthy mothers were collected at three time points: 30 min (colostrum), 5-9 days (transitional milk), and 25-30 days (mature milk) postpartum. Samples were evaluated by culturing, and the isolated bacteria were identified by MALDI-TOF MS and 16S DNA sequencing. In vitro screening for probiotics properties was performed, and the potential probiotics were mono-associated with germ-free mice to evaluate their ability to colonize the gastrointestinal tract. The microorganisms were submitted to the spray-drying process to check their viability for a potential simulated milk formula production. Seventy-seven bacteria were isolated from breast milk pertaining to four bacterial genera (Staphylococcus, Streptococcus, Leuconostoc, and Lacticaseibacillus). Four potential probiotics were selected: Lacticaseibacillus rhamnosus (n = 2) and Leuconostoc mesenteroides (n = 2). Isolates were able to colonize the gastrointestinal tract of germ-free mice and remained viable after the spray-drying process. In conclusion, breast milk harbors a unique microbiota with beneficial microorganisms that will impact the newborn gut colonization, being an essential source of probiotic candidates to be used in a formula of simulated maternal milk.
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Affiliation(s)
- Quésia S Damaceno
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil
| | - Bruno Gallotti
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil
| | - Isabela M M Reis
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil
| | - Yasmim C P Totte
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil
| | - Gabriella B Assis
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Henrique C Figueiredo
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Tales F Silva
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Ecologia e Evolução, Belo Horizonte, MG, Brazil
| | - Vasco Azevedo
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Ecologia e Evolução, Belo Horizonte, MG, Brazil
| | - Jacques R Nicoli
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil
| | - Flaviano S Martins
- Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, 662730270-901, Brazil.
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16
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Nguyen TH, Ho TTM, Nguyen-Hoang TP, Qumar S, Pham TTD, Bui QN, Bulach D, Nguyen TV, Rahman M. The endemic Helicobacter pylori population in Southern Vietnam has both South East Asian and European origins. Gut Pathog 2021; 13:57. [PMID: 34593031 PMCID: PMC8482589 DOI: 10.1186/s13099-021-00452-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 09/17/2021] [Indexed: 12/15/2022] Open
Abstract
Background The burden of Helicobacter pylori-induced gastric cancer varies based on predominant H. pylori population in various geographical regions. Vietnam is a high H. pylori burden country with the highest age-standardized incidence rate of gastric cancer (16.3 cases/100,000 for both sexes) in Southeast Asia, despite this data on the H. pylori population is scanty. We examined the global context of the endemic H. pylori population in Vietnam and present a contextual and comparative genomics analysis of 83 H. pylori isolates from patients in Vietnam. Results There are at least two major H. pylori populations are circulating in symptomatic Vietnamese patients. The majority of the isolates (~ 80%, 66/83) belong to the hspEastAsia and the remaining belong to hpEurope population (~ 20%, 17/83). In total, 66 isolates (66/83) were cagA positive, 64 were hspEastAsia isolates and two were hpEurope isolates. Examination of the second repeat region revealed that most of the cagA genes were ABD type (63/66; 61 were hspEastAsia isolates and two were hpEurope isolates). The remaining three isolates (all from hspEastAsia isolates) were ABC or ABCC types. We also detected that 4.5% (3/66) cagA gene from hspEastAsia isolates contained EPIYA-like sequences, ESIYA at EPIYA-B segments. Analysis of the vacA allelic type revealed 98.8% (82/83) and 41% (34/83) of the strains harboured the s1 and m1 allelic variant, respectively; 34/83 carried both s1m1 alleles. The most frequent genotypes among the cagA positive isolates were vacA s1m1/cagA + and vacA s1m2/cagA + , accounting for 51.5% (34/66) and 48.5% (32/66) of the isolates, respectively. Conclusions There are two predominant lineages of H. pylori circulating in Vietnam; most of the isolates belong to the hspEastAsia population. The hpEurope population is further divided into two smaller clusters. Supplementary Information The online version contains supplementary material available at 10.1186/s13099-021-00452-2.
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Affiliation(s)
- Trang Hoa Nguyen
- Oxford University Clinical Research Unit, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam
| | - Trang Thi My Ho
- Department of Genetics, Faculty of Biology and Biotechnology, Ho Chi Minh University of Science, Ho Chi Minh City, Vietnam
| | - Thien-Phuc Nguyen-Hoang
- Department of Genetics, Faculty of Biology and Biotechnology, Ho Chi Minh University of Science, Ho Chi Minh City, Vietnam
| | | | - Thuc Tran Dang Pham
- Department of Genetics, Faculty of Biology and Biotechnology, Ho Chi Minh University of Science, Ho Chi Minh City, Vietnam
| | - Quy Nhuan Bui
- Department of Gastroenterology, Gia Dinh Hospital, Ho Chi Minh City, Vietnam
| | - Dieter Bulach
- Melbourne Bioinformatics, The University of Melbourne and Doherty Applied Microbial Genomics, The Doherty Institute, Melbourne, Australia
| | - Thuy-Vy Nguyen
- Department of Genetics, Faculty of Biology and Biotechnology, Ho Chi Minh University of Science, Ho Chi Minh City, Vietnam
| | - Motiur Rahman
- Oxford University Clinical Research Unit, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam. .,Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, Oxford University, Oxford, UK.
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17
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Varon C, Azzi-Martin L, Khalid S, Seeneevassen L, Ménard A, Spuul P. Helicobacters and cancer, not only gastric cancer? Semin Cancer Biol 2021; 86:1138-1154. [PMID: 34425210 DOI: 10.1016/j.semcancer.2021.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 12/11/2022]
Abstract
The Helicobacter genus actually comprises 46 validly published species divided into two main clades: gastric and enterohepatic Helicobacters. These bacteria colonize alternative sites of the digestive system in animals and humans, and contribute to inflammation and cancers. In humans, Helicobacter infection is mainly related to H. pylori, a gastric pathogen infecting more than half of the world's population, leading to chronic inflammation of the gastric mucosa that can evolve into two types of gastric cancers: gastric adenocarcinomas and gastric MALT lymphoma. In addition, H. pylori but also non-H. pylori Helicobacter infection has been associated with many extra-gastric malignancies. This review focuses on H. pylori and its role in gastric cancers and extra-gastric diseases, as well as malignancies induced by non-H. pylori Helicobacters. Their different virulence factors and their involvement in carcinogenesis is discussed. This review highlights the importance of both gastric and enterohepatic Helicobacters in gastrointestinal and liver cancers.
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Affiliation(s)
- Christine Varon
- Univ. Bordeaux, INSERM, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Lamia Azzi-Martin
- Univ. Bordeaux, INSERM, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France; Univ. Bordeaux, UFR des Sciences Médicales, Bordeaux, France
| | - Sadia Khalid
- Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia RD 15, 12618, Tallinn, Estonia
| | - Lornella Seeneevassen
- Univ. Bordeaux, INSERM, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Armelle Ménard
- Univ. Bordeaux, INSERM, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Pirjo Spuul
- Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia RD 15, 12618, Tallinn, Estonia.
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18
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Ochoa S, Collado L. Enterohepatic Helicobacter species - clinical importance, host range, and zoonotic potential. Crit Rev Microbiol 2021; 47:728-761. [PMID: 34153195 DOI: 10.1080/1040841x.2021.1924117] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The genus Helicobacter defined just over 30 years ago, is a highly diverse and fast-growing group of bacteria that are able to persistently colonize a wide range of animals. The members of this genus are subdivided into two groups with different ecological niches, associated pathologies, and phylogenetic relationships: the gastric Helicobacter (GH) and the enterohepatic Helicobacter (EHH) species. Although GH have been mostly studied, EHH species have become increasingly important as emerging human pathogens and potential zoonotic agents in the last years. This group of bacteria has been associated with the development of several diseases in humans from acute pathologies like gastroenteritis to chronic pathologies that include inflammatory bowel disease, and liver and gallbladder diseases. However, their reservoirs, as well as their routes of transmission, have not been well established yet. Therefore, this review summarizes the current knowledge of taxonomy, epidemiology, and clinical role of the EHH group.
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Affiliation(s)
- Sofia Ochoa
- Faculty of Sciences, Institute of Biochemistry and Microbiology, Universidad Austral de Chile, Valdivia, Chile.,ANID - Millennium Science Initiative Program - Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - Luis Collado
- Faculty of Sciences, Institute of Biochemistry and Microbiology, Universidad Austral de Chile, Valdivia, Chile.,ANID - Millennium Science Initiative Program - Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
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19
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Ma Z, Zhang F, Ma H, Chen X, Yang J, Yang Y, Yang X, Tian X, Yu Q, Ma Z, Zhou X. Effects of different types and doses of whey protein on the physiological and intestinal flora in D-galactose induced aging mice. PLoS One 2021; 16:e0248329. [PMID: 33857162 PMCID: PMC8049228 DOI: 10.1371/journal.pone.0248329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 02/24/2021] [Indexed: 01/22/2023] Open
Abstract
The elderly usually suffer from many diseases. Improving the quality of life of the elderly is an urgent social issue. In this present study, D-galactose treated aging mice models were used to reveal the effects of different animal sources and different doses of whey protein (WP) on the immune indexes organs and intestinal flora. A total of 9 groups were set up, including normal control (NC), negative control (NS), positive control (Vc), low-, medium- and high-doses of cow WP intervention groups (CL, CM and CH for short, correspondingly) and low-, medium- and high-doses of goat WP intervention groups (GL, GM and GH for short, correspondingly). The body weight gain, thymus/body weight ratio, superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, spleen immunoglobulins G (IgG), spleen interleukin-2 (IL-2) and spleen interleukin-2 (IL-6) were measured. Then, the intestinal contents were collected, and 16s genes of intestinal bacteria were sequenced to reveal the changes in bacterial flora structure. WP intervention significantly increased the weight gain, thymus/body ratio and SOD activity, but decrease the content of MDA. WP intervention increased some immune indicators. All the WP treated aging mice showed similar values of physiological indexes to that of the Vc group, even better. The relative abundance of Lactobacillus and Stenotrophomonas was increased and decreased, respectively, by both cow and goat WP. Lactobacillus may be involved in regulating the functional repair of organisms. In contrast, Stenotrophomonas might play a negative role in the immune and antioxidant capacity of the body. Combining physiological indicators and intestinal flora structure, low-concentration WP for cow and goat might be optimal for aging models.
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Affiliation(s)
- Zuolin Ma
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Fumei Zhang
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- Gannan Research Institute of Yak Milk, Hezuo, Gansu, China
- Department of Medicine, Northwest Minzu University, Lanzhou, Gansu, China
| | - Hongxin Ma
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Xinghao Chen
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Jiaqing Yang
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Yiyan Yang
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Xueying Yang
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Xiaojing Tian
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- Gannan Research Institute of Yak Milk, Hezuo, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Qunli Yu
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Zhongren Ma
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- Gannan Research Institute of Yak Milk, Hezuo, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
| | - Xueyan Zhou
- China-Malaysia National Joint lab, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
- Gannan Research Institute of Yak Milk, Hezuo, Gansu, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, China
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20
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Ericsson AC, Franklin CL. The gut microbiome of laboratory mice: considerations and best practices for translational research. Mamm Genome 2021; 32:239-250. [PMID: 33689000 PMCID: PMC8295156 DOI: 10.1007/s00335-021-09863-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/18/2021] [Indexed: 12/14/2022]
Abstract
Just as the gut microbiota (GM) is now recognized as an integral mediator of environmental influences on human physiology, susceptibility to disease, and response to pharmacological intervention, so too does the GM of laboratory mice affect the phenotype of research using mouse models. Multiple experimental factors have been shown to affect the composition of the GM in research mice, as well as the model phenotype, suggesting that the GM represents a major component in experimental reproducibility. Moreover, several recent studies suggest that manipulation of the GM of laboratory mice can substantially improve the predictive power or translatability of data generated in mouse models to the human conditions under investigation. This review provides readers with information related to these various factors and practices, and recommendations regarding methods by which issues with poor reproducibility or translatability can be transformed into discoveries.
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Affiliation(s)
- Aaron C Ericsson
- University of Missouri Metagenomics Center (MUMC), MU Mutant Mouse Resource and Research Center (MU MMRRC), Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA.
| | - Craig L Franklin
- University of Missouri Metagenomics Center (MUMC), MU Mutant Mouse Resource and Research Center (MU MMRRC), Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
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21
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Peng W, Li H, Xu Y, Yan L, Tang Z, Hossein Mohseni A, Taghinezhad-S S, Tang X, Fu X. Association of Helicobacter bilis Infection with the Development of Colorectal Cancer. Nutr Cancer 2020; 73:2785-2795. [PMID: 33325271 DOI: 10.1080/01635581.2020.1862253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The role of Helicobacter_bilis (H.bilis) in the development of inflammatory bowel disease (IBD) and colitis-associated carcinogenesis (CAC) has seldom been investigated. We examined the abundance of H.bilis in 58 colorectal cancers (CRCs), 20 IBDs, 40 cases of normal colorectal mucosa (NCs), and 20 adenomas (ADs) by 16S rRNA fluorescence in situ hybridization (FISH). Number of CD4+CD45RB+T cell and expression of IFN-γ and TNF-α in these tissues was determined by immunofluorescence. The abundance of H.bilis was significantly higher in CRCs than that in IBDs (P = 0.006), ADs (P < 0.001) and NCs (P < 0.0001). The abundance of H.bilis in IBDs was significantly higher than that in ADs (P = 0.013). Moreover, the average number of CD4+CD45RB+T cell was significantly higher in CRCs than that in IBDs (P = 0.017) and NCs (P = 0.009). In addition, there was a positive correlation between the H.bilis abundance and density of CD4+CD45RB+T cells in 30 colorectal tissues (P < 0.0001). The frequency of co-staining for CD4+CD45RB+T cells and IFN-γ was significantly higher in H.bilis positive group than that in H.bilis negative group (P = 0.002). H.bilis may play a role in the initiation of IBD and CAC, possibly through promoting the transformation of T cells into CD4+CD45RB+T cells and increasing the expression of proinflammatory cytokines IFN-γ.
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Affiliation(s)
- Wei Peng
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Huan Li
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Yun Xu
- Department of Gastroenterology, the People's Hospital of Guangan City, Sichuan, China
| | - Li Yan
- Digestive Endoscopy Center, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China
| | - Zhenzhen Tang
- Digestive Endoscopy Center, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China
| | - Amir Hossein Mohseni
- Digestive Endoscopy Center, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China
| | - Sedigheh Taghinezhad-S
- Digestive Endoscopy Center, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China
| | - Xiaowei Tang
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Xiangsheng Fu
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China.,Digestive Endoscopy Center, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China
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22
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Thanaphongdecha P, Karinshak SE, Ittiprasert W, Mann VH, Chamgramol Y, Pairojkul C, Fox JG, Suttiprapa S, Sripa B, Brindley PJ. Infection with Helicobacter pylori Induces Epithelial to Mesenchymal Transition in Human Cholangiocytes. Pathogens 2020; 9:E971. [PMID: 33233485 PMCID: PMC7700263 DOI: 10.3390/pathogens9110971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 02/08/2023] Open
Abstract
Recent reports suggest that the East Asian liver fluke infection, caused by Opisthorchis viverrini, which is implicated in opisthorchiasis-associated cholangiocarcinoma, serves as a reservoir of Helicobacter pylori. The opisthorchiasis-affected cholangiocytes that line the intrahepatic biliary tract are considered to be the cell of origin of this malignancy. Here, we investigated interactions in vitro among human cholangiocytes, Helicobacter pylori strain NCTC 11637, and the congeneric bacillus, Helicobacter bilis. Exposure to increasing numbers of H. pylori at 0, 1, 10, 100 bacilli per cholangiocyte of the H69 cell line induced phenotypic changes including the profusion of thread-like filopodia and a loss of cell-cell contact, in a dose-dependent fashion. In parallel, following exposure to H. pylori, changes were evident in levels of mRNA expression of epithelial to mesenchymal transition (EMT)-encoding factors including snail, slug, vimentin, matrix metalloprotease, zinc finger E-box-binding homeobox, and the cancer stem cell marker CD44. Analysis to quantify cellular proliferation, migration, and invasion in real-time by both H69 cholangiocytes and CC-LP-1 line of cholangiocarcinoma cells using the xCELLigence approach and Matrigel matrix revealed that exposure to 10 H. pylori bacilli per cell stimulated migration and invasion by the cholangiocytes. In addition, 10 bacilli of H. pylori stimulated contact-independent colony establishment in soft agar. These findings support the hypothesis that infection by H. pylori contributes to the malignant transformation of the biliary epithelium.
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Affiliation(s)
- Prissadee Thanaphongdecha
- Research Center for Neglected Tropical Diseases of Poverty, Department of Microbiology, Immunology and Tropical Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA; (P.T.); (S.E.K.); (W.I.); (V.H.M.)
- Tropical Disease Research Laboratory, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Shannon E. Karinshak
- Research Center for Neglected Tropical Diseases of Poverty, Department of Microbiology, Immunology and Tropical Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA; (P.T.); (S.E.K.); (W.I.); (V.H.M.)
| | - Wannaporn Ittiprasert
- Research Center for Neglected Tropical Diseases of Poverty, Department of Microbiology, Immunology and Tropical Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA; (P.T.); (S.E.K.); (W.I.); (V.H.M.)
| | - Victoria H. Mann
- Research Center for Neglected Tropical Diseases of Poverty, Department of Microbiology, Immunology and Tropical Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA; (P.T.); (S.E.K.); (W.I.); (V.H.M.)
| | - Yaovalux Chamgramol
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (Y.C.); (C.P.)
| | - Chawalit Pairojkul
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (Y.C.); (C.P.)
| | - James G. Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;
| | - Sutas Suttiprapa
- Tropical Disease Research Laboratory, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Banchob Sripa
- Tropical Disease Research Laboratory, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (Y.C.); (C.P.)
| | - Paul J. Brindley
- Research Center for Neglected Tropical Diseases of Poverty, Department of Microbiology, Immunology and Tropical Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA; (P.T.); (S.E.K.); (W.I.); (V.H.M.)
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Ortega C, Irgang R, Valladares-Carranza B, Collarte C, Avendaño-Herrera R. First Identification and Characterization of Lactococcus garvieae Isolated from Rainbow Trout ( Oncorhynchus mykiss) Cultured in Mexico. Animals (Basel) 2020; 10:E1609. [PMID: 32916954 PMCID: PMC7552202 DOI: 10.3390/ani10091609] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/28/2020] [Accepted: 09/03/2020] [Indexed: 11/17/2022] Open
Abstract
Lactococcosis is a hyperacute hemorrhagic septicemia disease caused by Lactococcus garvieae, which is an emerging pathogen in global fish farming. Between 2016 and 2018, rainbow trout (Oncorhynchus mykiss) from five farms that presented outbreaks were sampled as part of a Mexican surveillance program for the detection of fish diseases. Fourteen L. garvieae isolates were recovered from sampled fish, as confirmed by biochemical tests, 16S rRNA gene sequencing, and clinical and histological insights. The biochemical and protein profiles of the isolates obtained were homogeneous. Repetitive extragenic palindromic-(REP)-and enterobacterial repetitive intergenic consensus sequence PCR (ERIC-PCR) analyses established weak genetic heterogeneity. Rainbow trout challenged with two of the isolates used at different bacterial concentrations (10-2 and 10-4 CFU/mL) showed melanosis, and hemorrhages were observed in the fins, liver, kidney, and spleen. Isolates were obtained from all of the organs sampled, including from surviving fish, as either pure or mixed cultures. The present study is the first to confirm the presence of L. garvieae as the agent of severe lactococcosis outbreaks in the two primary Mexican states for trout farming.
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Affiliation(s)
- Cesar Ortega
- Centro de Investigación y Estudios Avanzados en Salud Animal (CIESA), Facultad de Medicina Veterinaria y Zootecnia (FMVZ), Universidad Autónoma del Estado de México (UAEM), 50295 Toluca, Mexico;
| | - Rute Irgang
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de la Vida, Universidad Andrés Bello, 2531015 Viña del Mar, Chile; (R.I.); (C.C.)
- Centro FONDAP, Interdisciplinary Center for Aquaculture Research (INCAR), 2531015 Viña del Mar, Chile
| | - Benjamín Valladares-Carranza
- Centro de Investigación y Estudios Avanzados en Salud Animal (CIESA), Facultad de Medicina Veterinaria y Zootecnia (FMVZ), Universidad Autónoma del Estado de México (UAEM), 50295 Toluca, Mexico;
| | - Constanza Collarte
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de la Vida, Universidad Andrés Bello, 2531015 Viña del Mar, Chile; (R.I.); (C.C.)
- Centro FONDAP, Interdisciplinary Center for Aquaculture Research (INCAR), 2531015 Viña del Mar, Chile
| | - Ruben Avendaño-Herrera
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de la Vida, Universidad Andrés Bello, 2531015 Viña del Mar, Chile; (R.I.); (C.C.)
- Centro FONDAP, Interdisciplinary Center for Aquaculture Research (INCAR), 2531015 Viña del Mar, Chile
- Centro de Investigación Marina Quintay (CIMARQ), Universidad Andrés Bello, 2531015 Quintay, Chile
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Elyasi B, Rezaie A, Moori Bakhtiari N, Mosallanejad B. Helicobacter genus in the intestine and liver of stray cats: the molecular, histopathological, and immunohistochemical study. Braz J Microbiol 2020; 51:2123-2132. [PMID: 32875544 DOI: 10.1007/s42770-020-00359-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/04/2020] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES The study was designed to determine the presence of Helicobacter genus and three species of H. pylori, H. bilis, and H. canis, in the duodenum, ileum, colon, and liver of stray cats. Moreover, the histopathological and immunohistochemical analyses have been performed. METHODS Samples were taken from the duodenum, ileum, colon, and liver of 30 cats for molecular and histopathological evaluations. Polymerase chain reaction was carried out for the detection of the Helicobacter genus in the mentioned samples. Then, species-specific primers were used in Helicobacter-positive samples. RESULTS Helicobacter genus prevalence rates in the duodenum, ileum, colon, and liver samples were 50%, 60%, 50%, and 43.3%, respectively. Helicobacter pylori, H. canis, and H. bilis were isolated from at least one tissue of 18 (60%), 13 (43.3%), and 8 (26.7%) of the cats, respectively. Immunohistochemical findings confirmed the presence of bacteria in the intestinal crypt or the mucosal layer of duodenum, ileum, colon, and hepatic sinusoids. CONCLUSION In the present study, the concurrent infection of duodenum and liver was noticeable. Furthermore, the high prevalence of H. pylori in cats, as a well-known human pathogen, should be considered. High incidence of Helicobacter in gut and liver of Ahvaz stray cats is noticeable. According to the zoonotic importance of Helicobacter, more studies in the field of treatment and prevention are highly recommended.
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Affiliation(s)
- Boshra Elyasi
- Graduated in the doctorate of Veterinary Medicine, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Annahita Rezaie
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Golestan Bulvar, Ahvaz, Iran.
| | - Naghmeh Moori Bakhtiari
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Golestan Bulvar, Ahvaz, Iran
| | - Bahman Mosallanejad
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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25
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Seropositivity for Helicobacter pylori and hepatobiliary cancers in the PLCO study. Br J Cancer 2020; 123:909-911. [PMID: 32595210 PMCID: PMC7493958 DOI: 10.1038/s41416-020-0961-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 05/20/2020] [Accepted: 06/11/2020] [Indexed: 11/08/2022] Open
Abstract
Helicobacter has been suggested to play a possible role in hepatitis, gallstones, and hepatobiliary tumours. We assessed whether seropositivity to 15 H. pylori proteins was associated with subsequent incidence of 74 biliary tract and 105 liver cancer cases vs. 357 matched controls in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO). Odds ratios and 95% confidence intervals were computed by conditional logistic regression after adjustment for known hepatobiliary cancer risk factors. H. pylori seropositivity was not associated with either biliary tract (1.76, 0.90–3.46) or liver cancer (0.87, 0.46–1.65). CagA seropositivity was associated with both endpoints, although the latter association was not statistically significant (biliary tract: 2.16, 1.03–4.50; liver cancer: 1.96, 0.98–3.93) and neither association was statistically significant after correcting for multiple comparisons. Together, these results suggest possible associations between H. pylori and hepatobiliary cancer and suggest the value of future studies investigating the association. Trial registration number: NCT00339495.
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26
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Whary MT, Wang C, Ruff CF, DiVincenzo MJ, Labriola C, Ge L, Feng Y, Ge Z, Bakthavatchalu V, Muthupalani S, Horwitz BH, Fox JG. Effects of Colonization of Gnotobiotic Swiss Webster Mice with Helicobacter bilis. Comp Med 2020; 70:216-232. [PMID: 32349859 DOI: 10.30802/aalas-cm-19-000087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Helicobacter bilis (Hb) causes hepatitis in some strains of inbred mice. The current study confirmed that Hb directly causes portal hepatitis in outbred gnotobiotic Swiss Webster (SW) mice, as we previously reported for conventional SW mice. Hbmonoassociated SW mice also developed mild enterocolitis, expanded gut-associated lymphoid tissue (GALT), and tertiary lymphoid tissue in the lower bowel. At 1 and 10 mo after infection, Hb-induced GALT hyperplasia exhibited well-organized, ectopic germinal centers with increased mononuclear cell apoptosis, MHC class II antigen presentation, and pronounced endothelial venule formation, consistent with features of tertiary lymphoid tissue. In the lower bowel, Hb induced mainly B220+ cells as well as CD4+ IL17+, CD4+ IFNγ+, and CD4+ FoxP3+ regulatory T cells and significantly increased IL10 mRNA expression. This gnotobiotic model confirmed that Hb causes portal hepatitis in outbred SW mice but stimulated GALT with an antiinflammatory bias. Because Hb had both anti- and proinflammatory effects on GALT, it should be considered a 'pathosymbiont provocateur' and merits further evaluation in mouse models of human disease.
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Affiliation(s)
- Mark T Whary
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts;,
| | - Chuanwu Wang
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Catherine F Ruff
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Mallory J DiVincenzo
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Caralyn Labriola
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Lillian Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Zhongming Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Vasu Bakthavatchalu
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Suresh Muthupalani
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Bruce H Horwitz
- Department of Pediatrics, Harvard School of Medicine, Boston, Massachusetts; Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts
| | - James G Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
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27
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Crone S, Vives-Flórez M, Kvich L, Saunders AM, Malone M, Nicolaisen MH, Martínez-García E, Rojas-Acosta C, Catalina Gomez-Puerto M, Calum H, Whiteley M, Kolter R, Bjarnsholt T. The environmental occurrence of Pseudomonas aeruginosa. APMIS 2019; 128:220-231. [PMID: 31709616 DOI: 10.1111/apm.13010] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 11/06/2019] [Indexed: 01/08/2023]
Abstract
Pseudomonas aeruginosa is generally described as ubiquitous in natural settings, such as soil and water. However, because anecdotal observations and published reports have questioned whether or not this description is true, we undertook a rigorous study using three methods to investigate the occurrence of P. aeruginosa: We investigated environmental samples, analyzed 16S rRNA data, and undertook a systematic review and meta-analysis of published data. The environmental sample screening identified P. aeruginosa as significantly associated with hydrocarbon and pesticide-contaminated environments and feces, as compared to uncontaminated environments in which its prevalence was relatively low. The 16S rRNA data analysis showed that P. aeruginosa sequences were present in all habitats but were most abundant in samples from human and animals. Similarly, the meta-analysis revealed that samples obtained from environments with intense human contact had a higher prevalence of P. aeruginosa compared to those with less human contact. Thus, we found a clear tendency of P. aeruginosa to be present in places closely linked with human activity. Although P. aeruginosa may be ubiquitous in nature, it is usually scarce in pristine environments. Thus, we suggest that P. aeruginosa should be described as a bacterium largely found in locations associated with human activity.
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Affiliation(s)
- Stephanie Crone
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Martha Vives-Flórez
- Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
| | - Lasse Kvich
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Aaron M Saunders
- Department of Laboratory, Food and Environmental Science, Business Academy Aarhus, Viby J, Denmark
| | - Matthew Malone
- Infectious Diseases and Microbiology, School of Medicine, Western Sydney University, Sydney, Australia.,South West Sydney Limb Preservation and Wound Research, South Western Sydney Local Health District, Ingham Institute of Applied Medical Research, Sydney, Australia
| | - Mette H Nicolaisen
- Section for Microbial Ecology and Biotechnology, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Esteban Martínez-García
- Department of Microbiology, Harvard Medical School, Boston, MA, USA.,Systems Biology Program, National Center of Biotechnology CSIC, Madrid, Spain
| | | | | | - Henrik Calum
- Department of Clinical Microbiology, Hvidovre University Hospital, Copenhagen, Denmark
| | - Marvin Whiteley
- School of Biological Sciences, Georgia Institute of Technology, Emory-Children's Cystic Fibrosis Center, Atlanta, GA, USA
| | - Roberto Kolter
- Department of Microbiology, Harvard Medical School, Boston, MA, USA
| | - Thomas Bjarnsholt
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Microbiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Mueller C, Kwong Chung CKC, Faderl MR, Brasseit J, Zysset D. Helicobacter spp. in Experimental Models of Colitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1197:97-105. [DOI: 10.1007/978-3-030-28524-1_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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29
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Helicobacter pylori Infection as a Risk Factor for Hepatocellular Carcinoma: A Case-Control Study in Ethiopia. Int J Hepatol 2018; 2018:1941728. [PMID: 30631602 PMCID: PMC6304578 DOI: 10.1155/2018/1941728] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 11/14/2018] [Indexed: 12/31/2022] Open
Abstract
Background and Aims. Hepatocellular carcinoma is a major cause of cancer death worldwide, accounting for over half a million deaths per year. Its incidence varies with geographic locations and the type of etiologic factors. In Ethiopia, unidentified causes of liver disease are of sizeable proportion. Recent studies have shown an association of H. pylori infection with different spectrums of chronic liver disease. This study was conducted at St. Paul's Hospital Millennium Medical College in Ethiopia and assesses liver cancer and the association with H. pylori infection. Method. A prospective case-control study conducted on patients with chronic liver disease presenting with a suspicious liver lesion and diagnosed to have HCC in the Gastrointestinal (GI) Clinic of St. Paul's Hospital MMC from Dec 30, 2016, to Nov 1, 2017 G.C. Descriptive surveys on clinical history and physical examination and laboratory profiles were obtained, and the clinical course of the patients including the type of treatment was followed prospectively. Control cases were taken from adult patients without evidence of liver disease in the internal medicine clinic coming for routine evaluation. After collection data were analyzed using SPSS version 23 and associations were assessed using chi-square test. Binary logistic regression was used to assess the association of HCC with different variables and H. pylori infection. All variables with p-value <0.05 were considered as statistically significant. Results. One hundred twenty patients were analyzed with equal representation of cases and controls. The majority of patients with HCC were male with a mean age of 36 years. Older age adjusted Odds Ratio (AOR) (95%CI, p-value) 1.07(1.03-1.09, <0.001), viral hepatitis B (AOR) (95%CI, p-value) 6.19 (1.92-19.93, 0.002), and H. pylori infection (AOR) (95%CI, p-value) 5.22 (2.04-13.31, <0.001) were statistically significantly associated with HCC. Conclusion. H. pylori infection is associated with HCC in this case-control study. This study supports the emerging evidence of H. pylori association with other extra-gastric manifestations.
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30
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Mannion A, Shen Z, Feng Y, Artim SC, Ravindra K, Ge Z, Fox JG. Gamma-glutamyltranspeptidase expression by Helicobacter saguini, an enterohepatic Helicobacter species isolated from cotton top tamarins with chronic colitis. Cell Microbiol 2018; 21:e12968. [PMID: 30365223 DOI: 10.1111/cmi.12968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/12/2018] [Accepted: 10/16/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Helicobacter saguini is a novel enterohepatic Helicobacter species isolated from captive cotton top tamarins with chronic colitis and colon cancer. Monoassociated H. saguini infection in gnotobiotic IL-10-/- mice causes typhlocolitis and dysplasia; however, the virulent mechanisms of this species are unknown. Gamma-glutamyltranspeptidase (GGT) is an enzymatic virulence factor expressed by pathogenic Helicobacter and Campylobacter species that inhibits host cellular proliferation and promotes inflammatory-mediated gastrointestinal pathology. The aim of this study was to determine if H. saguini expresses an enzymatically active GGT homologue with virulence properties. EXPERIMENTAL PROCEDURES Two putative GGT paralogs (HSGGT1 and HSGGT2) identified in the H. saguini genome were bioinformatically analysed to predict enzymatic functionality and virulence potential. An isogenic knockout mutant strain and purified recombinant protein of HSGGT1 were created to study enzymatic activity and virulence properties by in vitro biochemical and cell culture experiments. RESULTS Bioinformatic analysis predicted that HSGGT1 has enzymatic functionality and is most similar to the virulent homologue expressed by Helicobacter bilis, whereas HSGGT2 contains putatively inactivating mutations. An isogenic knockout mutant strain and recombinant HSGGT1 protein were successfully created and demonstrated that H. saguini has GGT enzymatic activity. Recombinant HSGGT1 protein and sonicate from wild-type but not mutant H. saguini inhibited gastrointestinal epithelial and lymphocyte cell proliferation without evidence of cell death. The antiproliferative effect by H. saguini sonicate or recombinant HSGGT1 protein could be significantly prevented with glutamine supplementation or the GGT-selective inhibitor acivicin. Recombinant HSGGT1 protein also induced proinflammatory gene expression in colon epithelial cells. CONCLUSIONS This study shows that H. saguini may express GGT as a potential virulence factor and supports further in vitro and in vitro studies into how GGT expression by enterohepatic Helicobacter species influences the pathogenesis of gastrointestinal inflammatory diseases.
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Affiliation(s)
- Anthony Mannion
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Stephen C Artim
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Kodihalli Ravindra
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zhongming Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - James G Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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31
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The Golden Activity of Lysinibacillus sphaericus: New Insights on Gold Accumulation and Possible Nanoparticles Biosynthesis. MATERIALS 2018; 11:ma11091587. [PMID: 30200519 PMCID: PMC6163967 DOI: 10.3390/ma11091587] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 12/02/2022]
Abstract
Power struggles surrounding the increasing economic development of gold mining give rise to severe environmental and social problems. Two new strains of Lysinibacillus sphaericus were isolated from an area of active alluvial gold mining exploitation at El Bagre, Antioquia. The absorption capacity of these strains and some of the L. sphaericus Microbiological Research Center (CIMIC) collection (CBAM5, OT4b.31, III(3)7) were evaluated by spectrophotometry according to a calibration gold curve of HAuCl4− with concentrations between 0 µg/mL and 100 µg/mL. Bioassays with living biomass were carried out with an initial gold concentration of 60 µg/mL. Their sorption capacity was evident, reaching percentages of gold removal between 25% and 85% in the first 2 h and 75% to 95% after 48 h. Biosynthesis of possible gold nanoparticles (AuNPs) in assays with living biomass was also observed. Metal sorption was evaluated using scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDS) analysis. The sorption and fabrication capacity exhibited by the evaluated strains of L. sphaericus converts this microorganism into a potential alternative for biomining processes, especially those related to gold extraction.
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Stent A, Every AL, Chionh YT, Ng GZ, Sutton P. Superoxide dismutase from Helicobacter pylori suppresses the production of pro-inflammatory cytokines during in vivo infection. Helicobacter 2018; 23. [PMID: 29235197 DOI: 10.1111/hel.12459] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Helicobacter pylori has undergone considerable adaptation to allow chronic persistence within the gastric environment. While H. pylori-associated diseases are driven by an excessive inflammation, severe gastritis is detrimental to colonization by this pathogen. Hence, H. pylori has developed strategies to minimize the severity of gastritis it triggers in its host. Superoxide dismutase (SOD) is well known for its role in protecting against oxidative attack; less recognized is its ability to inhibit immunity, shown for SOD from mammalian sources and those of some bacterial species. This study examined whether H. pylori SOD (HpSOD) has the ability to inhibit the host immune response to these bacteria. MATERIALS AND METHODS The ability of recombinant HpSOD to modify the response to LPS was measured using mouse macrophages. A monoclonal antibody against HpSOD was generated and injected into H. pylori-infected mice. RESULTS Addition of HpSOD to cultures of mouse macrophages significantly inhibited the pro-inflammatory cytokine response to LPS stimulation. A monoclonal antibody was generated that was specific for SOD from H. pylori. When injected into mice infected with H. pylori for 3 months, this antibody was readily detected in both sera and gastric tissues 5 days later. While treatment with anti-HpSOD had no effect on H. pylori colonization at this time point, it significantly increased the levels of a range of pro-inflammatory cytokines in the gastric tissues. This did not occur with antibodies against other antioxidant enzymes. CONCLUSIONS SOD from H. pylori can inhibit the production of pro-inflammatory cytokine during in vivo infection.
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Affiliation(s)
- Andrew Stent
- School of Veterinary and Agricultural Science, Centre for Animal Biotechnology, University of Melbourne, Parkville, Vic., Australia
| | - Alison L Every
- School of Veterinary and Agricultural Science, Centre for Animal Biotechnology, University of Melbourne, Parkville, Vic., Australia
| | - Yok T Chionh
- School of Veterinary and Agricultural Science, Centre for Animal Biotechnology, University of Melbourne, Parkville, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Vic., Australia
| | - Garrett Z Ng
- School of Veterinary and Agricultural Science, Centre for Animal Biotechnology, University of Melbourne, Parkville, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Vic., Australia
| | - Philip Sutton
- School of Veterinary and Agricultural Science, Centre for Animal Biotechnology, University of Melbourne, Parkville, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Vic., Australia.,Department of Paediatrics, University of Melbourne, Parkville, Vic., Australia
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Fatemi SM, Doosti A, Shokri D, Ghorbani-Dalini S, Molazadeh M, Tavakoli H, Minakari M, Tavakkoli H. Is There a Correlation between Helicobacter Pylori and Enterohepatic Helicobacter Species and Gallstone Cholecystitis? Middle East J Dig Dis 2018; 10:24-30. [PMID: 29682244 PMCID: PMC5903923 DOI: 10.15171/mejdd.2017.86] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 12/09/2017] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND
Cholecystitis is a common surgical condition. Recently, several authors have reported that
DNA of bile tolerant Helicobacter spp. has been found in the human bile colonizing the biliary
tract. The aim of this study was to evaluate the association between the presence of Helicobacter
spp. and gallstone cholecystitis.
METHODS
In this case-control study, gallstones, bile, and gallbladder mucosa were collected from 25
patients without gallstone disease, 24 with acute cholecystitis, and 28 with chronic cholecystitis.
The presence of
Helicobacter pylori (H. pylori), Helicobacter bilis (H. bilis), Helicobacter hepaticus
(H. hepaticus)
, and Helicobacter pullorum (H. pullorum) were investigated by polymerase chain
reaction (PCR) using species-specific primers.
RESULTS
In this study, 77 subjects with acute and chronic cholecystitis and control groups with a mean
age of 46.85 ± 14.53 years, including 58 (67.25%) women and 19 (32.75%) men were included.
DNA of 10 Helicobacter spp. was detected in the bile of the patients with cholecystitis including
eight H. pylori and two H. bilis. However, we could not detect H. hepaticus and H. pullorum DNA in
the samples. Moreover, there was an association between H. pylori and acute cholecystitis (p = 0.048),
which was found to be stronger in 31-40-year-olds group (p = 0.003).
CONCLUSION
We found an association between the presence of H. pylori DNA and acute gallstone cholecystitis.
There is not statistically significant correlation between three enterohepatic Helicobacter spp. (
H.
bilis, H. hepaticus
, and H. pullorum) and cholelithiasis. Given the low sample size of the patients,
more studies are required to clear the clinical role of Helicobacter spp. in the gallstone disease
and cholecystitis.
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Affiliation(s)
- Seyed Masih Fatemi
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University, Shahrekord, Iran
| | - Abbas Doosti
- Department of Microbiology and Immunology, Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Dariush Shokri
- Nosocomial Infection Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Morteza Molazadeh
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University, Shahrekord, Iran
| | - Hossein Tavakoli
- Department of Biology, University of British Columbia, Kelowna, Canada
| | - Mohammad Minakari
- Department of Gastroenterology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamid Tavakkoli
- Department of Gastroenterology, Isfahan University of Medical Sciences, Isfahan, Iran
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A gut pathobiont synergizes with the microbiota to instigate inflammatory disease marked by immunoreactivity against other symbionts but not itself. Sci Rep 2017; 7:17707. [PMID: 29255158 PMCID: PMC5735134 DOI: 10.1038/s41598-017-18014-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 12/05/2017] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are likely driven by aberrant immune responses directed against the resident microbiota. Although IBD is commonly associated with a dysbiotic microbiota enriched in putative pathobionts, the etiological agents of IBD remain unknown. Using a pathobiont-induced intestinal inflammation model and a defined bacterial community, we provide new insights into the immune-microbiota interactions during disease. In this model system, the pathobiont Helicobacter bilis instigates disease following sub-pathological dextran sulfate sodium treatment. We show that H. bilis causes mild inflammation in mono-associated mice, but severe disease in the presence of a microbiota, demonstrating synergy between the pathobiont and microbiota in exacerbating pathology. Remarkably, inflammation depends on the presence of H. bilis, but is marked by a predominant Th17 response against specific members of the microbiota and not the pathobiont, even upon the removal of the most immune-dominant taxa. Neither increases in pathobiont burden nor unique changes in immune-targeted microbiota member abundances are observed during disease. Collectively, our findings demonstrate that a pathobiont instigates inflammation without being the primary target of a Th17 response or by altering the microbiota community structure. Moreover, our findings point toward monitoring pathobiont-induced changes in microbiota immune targeting as a new concept in IBD diagnotics.
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35
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On SLW, Miller WG, Houf K, Fox JG, Vandamme P. Minimal standards for describing new species belonging to the families Campylobacteraceae and Helicobacteraceae: Campylobacter, Arcobacter, Helicobacter and Wolinella spp. Int J Syst Evol Microbiol 2017; 67:5296-5311. [PMID: 29034857 PMCID: PMC5845751 DOI: 10.1099/ijsem.0.002255] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 07/24/2017] [Indexed: 01/25/2023] Open
Abstract
Ongoing changes in taxonomic methods, and in the rapid development of the taxonomic structure of species assigned to the Epsilonproteobacteria have lead the International Committee of Systematic Bacteriology Subcommittee on the Taxonomy of Campylobacter and Related Bacteria to discuss significant updates to previous minimal standards for describing new species of Campylobacteraceae and Helicobacteraceae. This paper is the result of these discussions and proposes minimum requirements for the description of new species belonging to the families Campylobacteraceae and Helicobacteraceae, thus including species in Campylobacter, Arcobacter, Helicobacter, and Wolinella. The core underlying principle remains the use of appropriate phenotypic and genotypic methods to characterise strains sufficiently so as to effectively and unambiguously determine their taxonomic position in these families, and provide adequate means by which the new taxon can be distinguished from extant species and subspecies. This polyphasic taxonomic approach demands the use of appropriate reference data for comparison to ensure the novelty of proposed new taxa, and the recommended study of at least five strains to enable species diversity to be assessed. Methodological approaches for phenotypic and genotypic (including whole-genome sequence comparisons) characterisation are recommended.
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Affiliation(s)
- Stephen L. W. On
- Department of Wine, Food and Molecular Biosciences, Lincoln University, PO Box 85084, Lincoln, New Zealand
| | - William G. Miller
- U.S. Department of Agriculture, Produce Safety and Microbiology Research Unit, Agricultural Research Service, Albany, CA, USA
| | - Kurt Houf
- Department of Veterinary Public Health, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
- Department of Biochemistry and Microbiology, Laboratory of Microbiology, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - James G. Fox
- Department of Comparative Medicine, Massachusetts Institute of Technology, 77, Massachusetts Avenue, Cambiridge, MA 02139, USA
| | - Peter Vandamme
- Department of Biochemistry and Microbiology, Laboratory of Microbiology, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
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Degand N, Dautremer J, Pilmis B, Ferroni A, Lanternier F, Bruneau J, Hermine O, Blanche S, Nassif X, Lortholary O, Lecuit M. Helicobacter bilis-Associated Suppurative Cholangitis in a Patient with X-Linked Agammaglobulinemia. J Clin Immunol 2017; 37:727-731. [DOI: 10.1007/s10875-017-0437-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/21/2017] [Indexed: 12/31/2022]
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Assis GBN, Pereira FL, Zegarra AU, Tavares GC, Leal CA, Figueiredo HCP. Use of MALDI-TOF Mass Spectrometry for the Fast Identification of Gram-Positive Fish Pathogens. Front Microbiol 2017; 8:1492. [PMID: 28848512 PMCID: PMC5552964 DOI: 10.3389/fmicb.2017.01492] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/25/2017] [Indexed: 12/21/2022] Open
Abstract
Gram-positive cocci, such as Streptococcus agalactiae, Lactococcus garvieae, Streptococcus iniae, and Streptococcus dysgalactiae subsp. dysgalactiae, are found throughout the world, particularly in outbreaks in farmed fish, and are thus associated with high economic losses, especially in the cultivation of Nile Tilapia. The aim of this study was to evaluate the efficacy of matrix-assisted laser desorption ionization (MALDI)-time of flight (TOF) mass spectrometry (MS) as an alternative for the diagnosis of these pathogens. One hundred and thirty-one isolates from Brazilian outbreaks assisted by the national authority were identified using a MALDI Biotyper from Bruker Daltonics. The results showed an agreement with respect to identification (Kappa = 1) between this technique and 16S ribosomal RNA gene sequencing for S. agalactiae and L. garvieae. However, for S. iniae and S. dysgalactiae subsp. dysgalactiae, perfect agreement was only achieved after the creation of a custom main spectra profile, as well as further comparisons with 16S ribosomal RNA and multilocus sequence analysis. MALDI-TOF MS was shown to be an efficient technology for the identification of these Gram-positive pathogens, yielding a quick and precise diagnosis.
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Affiliation(s)
- Gabriella B N Assis
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Felipe L Pereira
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Alexandra U Zegarra
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Guilherme C Tavares
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Carlos A Leal
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Henrique C P Figueiredo
- AQUACEN, National Reference Laboratory for Aquatic Animal Diseases, Ministry of Agriculture, Livestock and Food Supply, Federal University of Minas GeraisBelo Horizonte, Brazil
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38
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Fukushima HCS, Leal CAG, Cavalcante RB, Figueiredo HCP, Arijo S, Moriñigo MA, Ishikawa M, Borra RC, Ranzani-Paiva MJT. Lactococcus garvieae outbreaks in Brazilian farms Lactococcosis in Pseudoplatystoma sp. - development of an autogenous vaccine as a control strategy. JOURNAL OF FISH DISEASES 2017; 40:263-272. [PMID: 27457188 DOI: 10.1111/jfd.12509] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 06/06/2023]
Abstract
This study evaluated the control of streptococcosis outbreaks in Brazil, isolated from diseased sorubim and identified as Lactococcus garvieae by genetic sequencing. This report determined the potential for lactococcosis control in sorubim Pseudoplatystoma sp. with two vaccines: an aqueous-based, whole-cell inactivated vaccine (bacterin) and an oil-adjuvanted bacterin. Their efficacy was evaluated at 30 days post-vaccination (d.p.v.) by challenge with L. garvieae, and the antibody production response at 15, 30 and 60 d.p.v. and the non-specific immune response were compared amongst treatments. High protection levels (P < 0.05) were achieved with the oil-adjuvanted vaccine with a relative percentage survival value of 81.7% at 30 d.p.v. Additionally, the oil-adjuvanted vaccine increased the immunogenicity of the bacterin as indicated by greater agglutination antibody titres from 15 until 60 d.p.v. This is the first report of a positive effect of vaccine administration on the specific immunity of sorubim, and the study showed that a specific antibody plays an important role in sorubim defence against lactococcosis because the innate immune responses were similar in all of the studied animals. These results demonstrated that oil-adjuvanted vaccine can be an effective alternative for the protection of sorubim from L. garvieae disease.
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Affiliation(s)
- H C S Fukushima
- Aquaculture Center, São Paulo State University, Jaboticabal, SP, Brazil
| | - C A G Leal
- AQUAVET, Laboratory of Aquatic Animal Diseases, Federal University of Minas Gerais, Lavras, MG, Brazil
| | | | - H C P Figueiredo
- AQUAVET, Laboratory of Aquatic Animal Diseases, Federal University of Minas Gerais, Lavras, MG, Brazil
| | - S Arijo
- Department of Microbiology, Faculty of Sciences, University of Malaga, Malaga, Spain
| | - M A Moriñigo
- Department of Microbiology, Faculty of Sciences, University of Malaga, Malaga, Spain
| | - M Ishikawa
- EMBRAPA-Environment, Brazilian Agricultural Research Corporation, Jaguariúna, SP, Brazil
| | - R C Borra
- Genetic and Evolution Department, Federal University of São Carlos, São Carlos, SP, Brazil
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Abstract
Report of the Working Group on Hygiene of the Gesellschaft für Versuchstierkunde–Society for Laboratory Animal Science (GV-SOLAS) GV-SOLAS Working Group on Hygiene: Werner Nicklas (Chairman), Felix R. Homberger, Brunhilde Illgen-Wilcke, Karin Jacobi, Volker Kraft, Ivo Kunstyr, Michael Mähler, Herbert Meyer & Gabi Pohlmeyer-Esch
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40
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Mattner J. Impact of Microbes on the Pathogenesis of Primary Biliary Cirrhosis (PBC) and Primary Sclerosing Cholangitis (PSC). Int J Mol Sci 2016; 17:ijms17111864. [PMID: 27834858 PMCID: PMC5133864 DOI: 10.3390/ijms17111864] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 02/07/2023] Open
Abstract
Primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) represent the major clinical entities of chronic cholestatic liver diseases. Both disorders are characterized by portal inflammation and slowly progress to obliterative fibrosis and eventually liver cirrhosis. Although immune-pathogenic mechanisms have been implicated in the pathogenesis of PBC and PSC, neither disorder is considered to be a classical autoimmune disease, as PSC and PBC patients do not respond to immune-suppressants. Furthermore, the decreased bile flow resulting from the immune-mediated tissue assault and the subsequent accumulation of toxic bile products in PBC and PSC not only perpetuates biliary epithelial damage, but also alters the composition of the intestinal and biliary microbiota and its mutual interactions with the host. Consistent with the close association of PSC and inflammatory bowel disease (IBD), the polyclonal hyper IgM response in PBC and (auto-)antibodies which cross-react to microbial antigens in both diseases, an expansion of individual microbes leads to shifts in the composition of the intestinal or biliary microbiota and a subsequent altered integrity of epithelial layers, promoting microbial translocation. These changes have been implicated in the pathogenesis of both devastating disorders. Thus, we will discuss here these recent findings in the context of novel and alternative therapeutic options.
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MESH Headings
- Anti-Bacterial Agents/therapeutic use
- Antibodies, Bacterial/biosynthesis
- Bacterial Translocation
- Bile/drug effects
- Bile/microbiology
- Cholangiopancreatography, Endoscopic Retrograde
- Cholangitis, Sclerosing/diagnostic imaging
- Cholangitis, Sclerosing/drug therapy
- Cholangitis, Sclerosing/immunology
- Cholangitis, Sclerosing/microbiology
- Gastrointestinal Microbiome/drug effects
- Host-Pathogen Interactions
- Humans
- Immunoglobulin M/biosynthesis
- Liver Cirrhosis, Biliary/diagnostic imaging
- Liver Cirrhosis, Biliary/drug therapy
- Liver Cirrhosis, Biliary/immunology
- Liver Cirrhosis, Biliary/microbiology
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Affiliation(s)
- Jochen Mattner
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Wasserturmstr. 3/5, D-91054 Erlangen, Germany.
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41
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Jeon WJ, Dong HJ, Shin JH, Kim IY, Ho H, Oh SH, Yoon YM, Choi YK, Suh JG, Nam KH, Kim HC, Cho S, Seong JK. Helicobacter apodemus sp. nov., a new Helicobacter species identified from the gastrointestinal tract of striped field mice in Korea. J Vet Sci 2016; 16:475-81. [PMID: 25797297 PMCID: PMC4701740 DOI: 10.4142/jvs.2015.16.4.475] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/02/2015] [Accepted: 03/07/2015] [Indexed: 01/23/2023] Open
Abstract
A novel Helicobacter species was identified from the gastrointestinal tract of the Korean striped field mouse (Apodemus agrarius). Biochemical testing, ultrastructure characterization, and 16S rRNA gene sequence analysis suggested that this bacterium represents a distinct taxon. The bacterium was positive for urease activity, susceptible to cephalothin and nalidixic acid, and weakly positive for oxidase and catalase activity. Electron microscopy revealed that the bacterium has spirally curved rod morphology with singular bipolar nonsheathed flagella. Genotypically, the isolated bacterial strains (YMRC 000215, YMRC 000216, and YMRC 000419) were most closely related to a reference strain of Helicobacter mesocricetorum (97.25%, 97.32%, and 97.03% 16S rRNA sequence similarities, respectively). The 16S rRNA sequences of these strains were deposited into GenBank under accession numbers AF284754, AY009129, and AY009130, respectively. We propose the name Helicobacter apodemus for this novel species.
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Affiliation(s)
- Woo Jin Jeon
- Laboratory of Developmental Biology and Genomics, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program fo.,Incheon International Airport Imported Food Inspection Center, Gyeongin Regional Food and Drug Administration, Ministry of Food and Drug Safety, Incheon 22382, Korea
| | - Hee-Jin Dong
- Laboratory of Veterinary Public Health, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program for Creative
| | - Jae Hoon Shin
- Laboratory of Developmental Biology and Genomics, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program fo
| | - Il Yong Kim
- Laboratory of Developmental Biology and Genomics, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program fo
| | - Hungwui Ho
- Laboratory of Veterinary Public Health, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program for Creative
| | - Seung Hyun Oh
- College of Pharmacy, Gachon University, Incheon 21936, Korea
| | - Young Min Yoon
- College of Veterinary Medicine, Jeju National University, Jeju 63241, Korea
| | - Yang-Kyu Choi
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea
| | - Jun Gyo Suh
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon 24252, Korea
| | - Ki-Hoan Nam
- Biomedical Mouse Resource Center, Korea Research Institute for Bioscience and Biotechnology, Ochang 34141, Korea
| | - Hyoung-Chin Kim
- Biomedical Mouse Resource Center, Korea Research Institute for Bioscience and Biotechnology, Ochang 34141, Korea
| | - Seongbeom Cho
- Laboratory of Veterinary Public Health, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program for Creative
| | - Je Kyung Seong
- Laboratory of Developmental Biology and Genomics, College of Veterinary Medicine, BIO-MAX Institute, Program for Cancer Biology, and Interdisciplinary Program for Bioinformatics, BK21Plus Program fo
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Shen Z, Feng Y, Muthupalani S, Sheh A, Cheaney LE, Kaufman CA, Gong G, Paster BJ, Fox JG. Novel Helicobacter species H.japonicum isolated from laboratory mice from Japan induces typhlocolitis and lower bowel carcinoma in C57BL/129 IL10-/- mice. Carcinogenesis 2016; 37:1190-1198. [PMID: 27655833 PMCID: PMC5137264 DOI: 10.1093/carcin/bgw101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 08/29/2016] [Accepted: 09/20/2016] [Indexed: 12/28/2022] Open
Abstract
A novel Helicobacter species Helicobacter japonicum was isolated from the stomach and intestines of clinically normal mice received from three institutes from Japan. The novel Helicobacter sp. was microaerobic, grew at 37°C and 42°C, was catalase and oxidase positive, but urease negative. It is most closely related to the 16S rRNA gene of H.muridarum (98.6%); to the 23S rRNA gene of H.hepaticus (97.9%); to the hsp60 gene of H.typhlonius (87%). The novel Helicobacter sp. has in vitro cytolethal distending toxin (CDT) activity; its cdtB gene sequence has 83.8% identity with that of H.hepaticus The whole genome sequence of H.japonicum MIT 01-6451 has a 2.06-Mb genome length with a 37.5% G + C content. When the organism was inoculated into C57BL/129 IL10-/- mice, it was cultured from the stomach, colon and cecum of infected mice at 6 and 10 weeks post-infection. The cecum had the highest H.japonicum colonization levels by quantitative PCR. The histopathology of the lower bowel was characterized by moderate to severe inflammation, mild edema, epithelial defects, mild to severe hyperplasia, dysplasia and carcinoma. Inflammatory cytokines IFNγ, TNFα and IL17a, as well as iNOS were significantly upregulated in the cecal tissue of infected mice. These results demonstrate that the novel H.japonicum can induce inflammatory bowel disease and carcinoma in IL10-/- mice and highlights the importance of identifying novel Helicobacter spp. especially when they are introduced from outside mouse colonies from different geographic locations.
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Affiliation(s)
| | - Yan Feng
- Division of Comparative Medicine
| | | | | | | | | | - Guanyu Gong
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA and
| | | | - James G Fox
- Division of Comparative Medicine, .,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA and
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43
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Bleich A, Fox JG. The Mammalian Microbiome and Its Importance in Laboratory Animal Research. ILAR J 2016; 56:153-8. [PMID: 26323624 DOI: 10.1093/ilar/ilv031] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In this issue are assembled 10 fascinating, well-researched papers that describe the emerging field centered on the microbiome of vertebrate animals and how these complex microbial populations play a fundamental role in shaping homeostasis of the host. The content of the papers will deal with bacteria and, because of relative paucity of information on these organisms, will not include discussions on viruses, fungus, protozoa, and parasites that colonize various animals. Dissecting the number and interactions of the 500-1000 bacterial species that can inhabit the intestines of animals is made possible by advanced DNA sequencing methods, which do not depend on whether the organism can be cultured or not. Laboratory animals, particularly rodents, have proven to be an indispensable component in not only understanding how the microbiome aids in digestion and protects the host against pathogens, but also in understanding the relationship of various species of bacteria to development of the immune system. Importantly, this research elucidates purported mechanisms for how the microbiome can profoundly affect initiation and progression of diseases such as type 1 diabetes, metabolic syndromes, obesity, autoimmune arthritis, inflammatory bowel disease, and irritable bowel syndrome. The strengths and limitations of the use of germfree mice colonized with single species of bacteria, a restricted flora, or most recently the use of human-derived microbiota are also discussed.
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Affiliation(s)
- André Bleich
- André Bleich, PhD, DipECLAM, is a professor and Director of the Institute for Laboratory Animal Science and Central Animal Facility at Hannover Medical School, Hannover, Germany. James G. Fox, DVM, MS, DACLAM, is Director of the Division of Comparative Medicine and professor in the Department of Biological Engineering at the Massachusetts Institute of Technology in Cambridge, Massachusetts
| | - James G Fox
- André Bleich, PhD, DipECLAM, is a professor and Director of the Institute for Laboratory Animal Science and Central Animal Facility at Hannover Medical School, Hannover, Germany. James G. Fox, DVM, MS, DACLAM, is Director of the Division of Comparative Medicine and professor in the Department of Biological Engineering at the Massachusetts Institute of Technology in Cambridge, Massachusetts
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Kawamura Y, Tomida J, Miyoshi-Akiyama T, Okamoto T, Narita M, Hashimoto K, Cnockaert M, Vandamme P, Morita Y, Sawa T, Akaike T. Proposal of Helicobacter canicola sp. nov., previously identified as Helicobacter cinaedi, isolated from canines. Syst Appl Microbiol 2016; 39:307-12. [PMID: 27381809 DOI: 10.1016/j.syapm.2016.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 06/13/2016] [Accepted: 06/17/2016] [Indexed: 01/27/2023]
Abstract
During the course of our taxonomic investigation of Helicobacter cinaedi, it was realized that the strains isolated from dogs, which have been identified as H. cinaedi, showed different biochemical traits than did the isolates obtained from humans. None of the three dog isolates could reduce nitrate to nitrite, whereas all of the human H. cinaedi isolates could do so. The dog isolates showed a strong positive alkaline phosphatase reaction and could grow at 42°C, however the human isolates showed negative to very weak responses to those tests. The GyrA protein based phylogenetic analysis showed that the three isolates from dogs formed a slightly distinct cluster from the human isolate cluster. Phylogenetic analysis of the 16S rRNA, 23S rRNA, gyrB, and hsp60 gene sequences further confirmed that the dog isolates differed from the human H. cinaedi isolate cluster. The whole-genome in silico DNA similarities of each isolate based on their full genome sequences revealed that the isolates from dogs shared more than 94.9% ANIb (average nucleotide identity based on BLAST), while 94.0% ANIb were found between the isolates from dogs and the humans, including the H. cinaedi type strain ATCC BAA-847(T) (=CCUG 18818(T)). From these data, we propose a new species, 'H. canicola' sp. nov., for the isolates from dogs. The type strain is PAGU 1410(T) (CCUG 33887(T)=LMG 29580(T)).
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Affiliation(s)
- Yoshiaki Kawamura
- Department of Microbiology, Aichi Gakuin University, School of Pharmacy, 1-100 Kusumoto-cho, Nagoya, Aichi 464-8650, Japan.
| | - Junko Tomida
- Department of Microbiology, Aichi Gakuin University, School of Pharmacy, 1-100 Kusumoto-cho, Nagoya, Aichi 464-8650, Japan.
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo 162-8655, Japan.
| | - Tatsuya Okamoto
- Intensive Care Unit, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo 162-8655, Japan.
| | - Masashi Narita
- Division of Infectious Diseases, Department of Medicine, Okinawa Chubu Hospital, 281 Miyazato, Uruma, Okinawa 902-2293, Japan.
| | - Katsuhiko Hashimoto
- Emergency, Critical Care and Anesthesia, Ohta General Hospital Foundation, Ohta Nishinouchi Hospital, 2-5-20, Nishinouchi, Koriyama, Fukushima 963-8558, Japan.
| | - Margo Cnockaert
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
| | - Peter Vandamme
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
| | - Yuji Morita
- Department of Microbiology, Aichi Gakuin University, School of Pharmacy, 1-100 Kusumoto-cho, Nagoya, Aichi 464-8650, Japan.
| | - Tomohiro Sawa
- Department of Microbiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjou, Kumamoto, Kumamoto 860-8556, Japan.
| | - Takaaki Akaike
- Department of Environmental Health Sciences and Molecular Toxicology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba, Sendai, Miyagi 980-8575, Japan.
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Woods SE, Ek C, Shen Z, Feng Y, Ge Z, Muthupalani S, Whary MT, Fox JG. Male Syrian Hamsters Experimentally Infected with Helicobacter spp. of the H. bilis Cluster Develop MALT-Associated Gastrointestinal Lymphomas. Helicobacter 2016; 21:201-17. [PMID: 26348390 PMCID: PMC4783298 DOI: 10.1111/hel.12265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Aged hamsters naturally infected with novel Helicobacter spp. classified in the H. bilis cluster develop hepatobiliary lesions and typhlocolitis. METHODS To determine whether enterohepatic H. spp. contribute to disease, Helicobacter-free hamsters were experimentally infected with H. spp. after suppression of intestinal bacteria by tetracycline treatment of dams and pups. After antibiotic withdrawal, weanlings were gavaged with four H. bilis-like Helicobacter spp. isolated from hamsters or H. bilis ATCC 43879 isolated from human feces and compared to controls (n = 7 per group). RESULTS Helicobacter bilis 43879-dosed hamsters were necropsied at 33 weeks postinfection (WPI) due to the lack of detectable infection by fecal PCR; at necropsy, 5 of 7 were weakly PCR positive but lacked intestinal lesions. The remaining hamsters were maintained for ~95 WPI; chronic H. spp. infection in hamsters (6/7) was confirmed by PCR, bacterial culture, fluorescent in situ hybridization, and ELISA. Hamsters had mild-to-moderate typhlitis, and three of the male H. spp.-infected hamsters developed small intestinal lymphoma, in contrast to one control. Of the three lymphomas in H. spp.-infected hamsters, one was a focal ileal mucosa-associated lymphoid tissue (MALT) B-cell lymphoma, while the other two were multicentric small intestinal large B-cell lymphomas involving both the MALT and extra-MALT mucosal sites with lymphoepithelial lesions. The lymphoma in the control hamster was a diffuse small intestinal lymphoma with a mixed population of T and B cells. CONCLUSIONS Results suggest persistent H. spp. infection may augment risk for gastrointestinal MALT origin lymphomas. This model is consistent with H. pylori/heilmannii-associated MALT lymphoma in humans and could be further utilized to investigate the mechanisms of intestinal lymphoma development.
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Affiliation(s)
- Stephanie E Woods
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Courtney Ek
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zhongming Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Mark T Whary
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James G Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
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Qin H, Tang G, Yi P, Pan X, Huang H, Chang R, Shi Z, Ashraf MA. Diagnosis of Genus Helicobacter through a hemi-nested PCR assay of 16S rRNA. Saudi Pharm J 2016; 24:265-72. [PMID: 27275113 PMCID: PMC4881236 DOI: 10.1016/j.jsps.2016.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The present study aimed to establish a genus-specific PCR-based assay to detect helicobacters using 16S rRNA gene as the target template. We designed the hemi-nested primers based on sequences of 16S rRNA gene of 34 types of Helicobacter species. The inclusivity, sensitivity, and specificity of the PCR assay using these primers were examined in three different models, comprising feces simulated samples, BLAB/c mice infection model and clinic patients samples. The detection sensitivity of Helicobacter pylori, Helicobacter hepaticus and Helicobacter bilis strains from feces simulated samples was all 102 CFU/ml. We successfully detected H. hepaticus and H. bilis in the liver, cecum and feces of experimentally infected mice. H. pylori was successfully detected in the feces samples from 3 patients infected with H. pylori while not in the feces samples from 3 healthy human. However, the C97/C05–C97/C98 PCR assay detected H. pylori in the 2 positive samples. Due to the PCR assay’s excellent inclusivity, high sensitivity and specificity it may be used to detect the presence of Helicobacters.
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Affiliation(s)
- Heping Qin
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Guodu Tang
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Ping Yi
- Department of Gastroenterology, Liuzhou People's Hospital, Liuzhou 545006, China
| | - Xinyi Pan
- Department of Health Care, Liuzhou People's Hospital, Liuzhou 545006, China
| | - Huali Huang
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Renjie Chang
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Zhe Shi
- Department of Pathology, Liuzhou People's Hospital, Liuzhou 545006, China
| | - Muhammad Aqeel Ashraf
- Faculty of Science and Natural Resources, University Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
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Gill J, Haydon TG, Rawdon TG, McFadden AMJ, Ha HJ, Shen Z, Feng Y, Pang J, Swennes AG, Paster BJ, Dewhirst FE, Fox JG, Spence RP. Helicobacter bilis and Helicobacter trogontum: infectious causes of abortion in sheep. J Vet Diagn Invest 2016; 28:225-34. [PMID: 27016722 DOI: 10.1177/1040638716638704] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The aim of our study was to determine the association of Helicobacter spp. that had flexispira morphology with ovine abortion, and to understand the importance of these organisms as a cause of ovine abortion in New Zealand. A retrospective diagnostic survey was carried out on laboratory submissions from ovine abortion outbreaks. A comparison was made of the proportion of laboratory submissions where Helicobacter spp. were detected from flocks that had no other agent identified (group A) with a group that had a known cause of abortion identified (group B). This latter group was considered to be a negative control, given the premise that Helicobacter spp. were not causing abortions and that Helicobacter spp. should be present at a lower rate in the group. Where no diagnosis had been made, aborted material was positive for Helicobacter spp. with flexispira morphology in 8 submissions (20%, 8/40) from 5 of the 31 survey farms (16%, 5/31). Helicobacter spp. were not detected in any of the 18 submissions from the 17 control farms (group B). Helicobacter spp. were confirmed by 16S ribosomal RNA sequencing of 3 of the Helicobacter spp. isolated by culture from the livers of aborted sheep fetuses, and 7 of the 8 where samples were positive in a Helicobacter PCR assay. The Helicobacter spp. were identified as Helicobacter trogontum (Flexispira taxon 5 genotype) and Helicobacter bilis (Flexispira taxon 8 genotype). The findings support Helicobacter spp. being a probable causative agent of ovine abortions in New Zealand.
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Affiliation(s)
- John Gill
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Taryrn G Haydon
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Thomas G Rawdon
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Andrew M J McFadden
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Hye-Jeong Ha
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Zeli Shen
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Yan Feng
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Jassia Pang
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Alton G Swennes
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Bruce J Paster
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Floyd E Dewhirst
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - James G Fox
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
| | - Richard P Spence
- Gribbles Veterinary Pathology, Invermay, Dunedin, New Zealand (Gill)Ministry for Primary Industries, Upper Hutt, New Zealand (Haydon, Rawdon, McFadden, Ha, Spence)Massachusetts Institute of Technology, Cambridge, MA (Shen, Feng, Pang, Swennes, Fox)Forsyth Institute, Cambridge, MA (Paster, Dewhirst)Harvard School of Dental Medicine, Boston, MA (Paster, Dewhirst)
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Bang B, Lichtenberger LM. Methods of Inducing Inflammatory Bowel Disease in Mice. ACTA ACUST UNITED AC 2016; 72:5.58.1-5.58.42. [PMID: 26995548 DOI: 10.1002/0471141755.ph0558s72] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Animal models of experimentally induced inflammatory bowel disease (IBD) are useful for understanding more about the mechanistic basis of the disease, identifying new targets for therapeutic intervention, and testing novel therapeutics. This unit provides detailed protocols for five widely used mouse models of experimentally induced intestinal inflammation: chemical induction of colitis by dextran sodium sulfate (DSS), hapten-induced colitis via 2,4,6-trinitrobenzene sulfonic acid (TNBS), Helicobacter-induced colitis in mdr1a(-/-) mice, the CD4(+) CD45RB(hi) SCID transfer colitis model, and the IL-10(-/-) colitis model. © 2016 by John Wiley & Sons, Inc.
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Affiliation(s)
- Byoungwook Bang
- Department of Internal Medicine, Inha University School of Medicine, Incheon, Korea.,Department of Integrative Biology and Pharmacology, The University of Texas Medical School at Houston, Houston, Texas
| | - Lenard M Lichtenberger
- Department of Integrative Biology and Pharmacology, The University of Texas Medical School at Houston, Houston, Texas
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Deenonpoe R, Chomvarin C, Pairojkul C, Chamgramol Y, Loukas A, Brindley PJ, Sripa B. The carcinogenic liver fluke Opisthorchis viverrini is a reservoir for species of Helicobacter. Asian Pac J Cancer Prev 2016; 16:1751-8. [PMID: 25773821 DOI: 10.7314/apjcp.2015.16.5.1751] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
There has been a strong, positive correlation between opisthorchiasis-associated cholangiocarcinoma and infection with Helicobacter. Here a rodent model of human infection with Opisthorchis viverrini was utilized to further investigate relationships of apparent co-infections with O. viverrini and H. pylori. A total of 150 hamsters were assigned to five groups: i) Control hamsters not infected with O. viverrini; ii) O. viverrini-infected hamsters; iii) non-O. viverrini infected hamsters treated with antibiotics (ABx); iv) O. viverrini-infected hamsters treated with ABx; and v) O. viverrini-infected hamsters treated both with ABx and praziquantel (PZQ). Stomach, gallbladder, liver, colonic tissue, colorectal feces and O. viverrini worms were collected and the presence of species of Helicobacter determined by PCR-based approaches. In addition, O. viverrini worms were cultured in vitro with and without ABx for four weeks, after which the presence of Helicobacter spp. was determined. In situ localization of H. pylori and Helicobacter-like species was performed using a combination of histochemistry and immunohistochemistry. The prevalence of H. pylori infection in O. viverrini-infected hamsters was significantly higher than that of O. viverrini-uninfected hamsters (p≤0.001). Interestingly, O. viverrini-infected hamsters treated with ABx and PZQ (to remove the flukes) had a significantly lower frequency of H. pylori than either O. viverrini- infected hamsters treated only with ABx or O. viverrini-infected hamsters, respectively (p≤0.001). Quantitative RT-PCR strongly confirmed the correlation between intensity H. pylori infection and the presence of liver fluke infection. In vitro, H. pylori could be detected in the O. viverrini worms cultured with ABx over four weeks. In situ localization revealed H. pylori and other Helicobacter-like bacteria in worm gut. The findings indicate that the liver fluke O. viverrini in the biliary tree of the hamsters harbors H. pylori and Helicobacter-like bacteria. Accordingly, the association between O. viverrini and H. pylori may be an obligatory mutualism.
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Affiliation(s)
- Raksawan Deenonpoe
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Disease Research Laboratory, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand E-mail :
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Hong S, Kim O. Evaluation of assays to detect Helicobacter felis infection in cats. J Biomed Res 2015. [DOI: 10.12729/jbr.2015.16.4.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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