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Tsukadaira T, Hayashi S, Ota H, Kobayashi N, Agawa H, Kodaira H, Sekiguchi Y, Matsumoto T, Horiuchi K, Negishi T, Tada T. Triple-drug combination therapy versus six-month proton pump inhibitor monotherapy in non-Helicobacter pylori Helicobacter eradication, and hyperacid environment preference of Helicobacter suis: a clinical study. BMC Gastroenterol 2024; 24:157. [PMID: 38720287 PMCID: PMC11080111 DOI: 10.1186/s12876-024-03252-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND At present, eradication regimens for non-Helicobacter pylori Helicobacter (NHPH) have not been established yet. We investigated effectiveness of the standard triple-drug combination therapy for Helicobacter pylori eradication and of a proton pump inhibitor (PPI) monotherapy in eradication of NHPH. METHODS Subjects were the patients who were diagnosed with NHPH-infected gastritis based on microscopic findings, helical-shaped organisms obviously larger than Helicobacter pylori, in the gastric mucosal specimens using Giemsa staining at Kenwakai Hospital between November 2010 and September 2021, whose NHPH species were identified by polymerase chain reaction (PCR) analysis of urease genes in endoscopically-biopsied samples, and who consented to NHPH eradication with either the triple-drug combination therapy for one week or a PPI monotherapy for six months. Six months after the completion of eradication, its result was determined with esophagogastroduodenoscopy, microscopic examination, and PCR analysis. In cases of unsuccessful eradication, a second eradication with the other therapy was suggested to the patient. RESULTS PCR analysis detected NHPH in 38 patients: 36 as Helicobacter suis and two as Helicobacter heilmannii/Helicobacter ailurogastricus. Fourteen Helicobacter suis-infected and one Helicobacter heilmannii/Helicobacter ailurogastricus-infected patients requested eradication therapy. The triple-drug combination therapy succeeded in four of five patients, while the PPI monotherapy succeeded in five of 10 patients. Three of five patients who had been unsuccessful with the latter therapy requested the triple-drug combination therapy as the second eradication and all three were successful. In total, the triple-drug combination therapy succeeded in seven out of eight (87.5%) attempted cases, while the PPI monotherapy in five out of 10 (50%) attempted cases. CONCLUSIONS In NHPH eradication, the triple-drug combination therapy was considered to be effective to some extent and to become the first-line therapy. While, although less successful, PPI monotherapy appeared to be a potentially promising option particularly for patients with allergy or resistance to antibiotics. Effectiveness of PPI monotherapy may be attributed to hyperacid environment preference of Helicobacter suis and PPI's acid-suppressive effect. Additionally, male predominance in NHPH-infected gastritis patients may be explained by gender difference in gastric acid secretory capacity. However, further evidence needs to be accumulated. STUDY REGISTRATION This study was approved by the Research Ethics Committee of Kenwakai Hospital (No. 2,017,024).
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Affiliation(s)
- Toshihisa Tsukadaira
- Department of Internal Medicine, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan.
| | - Seiichi Hayashi
- Department of Pathology, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan
| | - Hiroyoshi Ota
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, 3-1-1, Asahi, 390-8621, Matsumoto, Japan
| | - Natsuko Kobayashi
- Department of Internal Medicine, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan
| | - Hiroyuki Agawa
- Department of Internal Medicine, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan
| | - Himiko Kodaira
- Department of Pathology, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan
| | - Yasuhiro Sekiguchi
- Department of Internal Medicine, Kenwakai Hospital, Kanaenakadaira, Iida, 1936, 395-0801, Japan
| | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gumma University Graduate School of Health, 3-39-22 Showa-cho, Maebashi, 371-8511, Japan
| | - Kazuki Horiuchi
- Department of Laboratory Medicine, Shinshu University Hospital, 3-1-1, Asahi, 390-8621, Matsumoto, Japan
| | - Tatsuya Negishi
- Department of Laboratory Medicine, Shinshu University Hospital, 3-1-1, Asahi, 390-8621, Matsumoto, Japan
| | - Toshifumi Tada
- Department of Internal Medicine, Japanese Red Cross Society Himeji Hospital, 1-12-1 Shimoteno, 670-8540, Himeji, Japan
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Chang D, Gluchowski NL, Abu Alfa AK, Goldsmith JD, Redston M, Bonilla S. Clinical presentation and outcomes of Helicobacter heilmannii gastritis in children in the New England region of the United States. J Pediatr Gastroenterol Nutr 2024; 78:204-210. [PMID: 38374558 DOI: 10.1002/jpn3.12058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 09/28/2023] [Accepted: 10/04/2023] [Indexed: 02/21/2024]
Abstract
OBJECTIVE To describe the clinical, endoscopic, histologic, and treatment outcomes of Helicobacter heilmannii (H. heilmannii) associated gastritis in children in the New England region of the United States. METHODS Retrospective study of children (1-18 years) with H. heilmannii identified on gastric mucosal biopsies from two pediatric centers over a 21-year period, January 2000-December 2021. Cases were identified by querying pathology databases at each institution. Demographic and clinical data were obtained from the medical record. Endoscopic and histologic findings were extracted from endoscopy and pathology reports, respectively. RESULTS Thirty-eight children were diagnosed with H. heilmannii-associated gastritis during the study period. The mean age at diagnosis was 10.1 ± 5.3 years, and 25/38 (66%) cases were male. Abdominal pain (32%) and nausea with or without vomiting (26%) were the most common symptoms. Thirty-two children (84%) had endoscopic findings including gastric nodularity (55%) and erythema (26%). All children had histologic signs of chronic gastritis, including those with normal endoscopic exams. Antibiotic regimens used for treating Helicobacter pylori were frequently prescribed. Of the 17 children who underwent a follow-up endoscopy (range 2-68 months), 15 (88%) did not have H. heilmannii identified on gastric biopsies. CONCLUSION H. heilmannii was an infrequent but potential cause of epigastric abdominal pain and nausea in our cohort of New England children. While morphologically distinct from H. pylori, the bacteria can result in similar endoscopic and histologic findings of nodularity and chronic gastritis, respectively. The rate of eradication, as assessed by histology following treatment with H. pylori therapies, was below the 90% recommended goal for antimicrobial therapies.
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Affiliation(s)
- Denis Chang
- Division of Gastroenterology, Hepatology, and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Nina L Gluchowski
- Division of Pediatric Gastroenterology, University of Vermont Children's Hospital, and Larner College of Medicine, Burlington, Vermont, USA
| | - Amer K Abu Alfa
- Department of Pathology and Laboratory Medicine, University of Vermont Health Network, and Larner College of Medicine, Burlington, Vermont, USA
| | - Jeffrey D Goldsmith
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Mark Redston
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Silvana Bonilla
- Division of Gastroenterology, Hepatology, and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
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Taillieu E, Chiers K, Amorim I, Gärtner F, Maes D, Van Steenkiste C, Haesebrouck F. Gastric Helicobacter species associated with dogs, cats and pigs: significance for public and animal health. Vet Res 2022; 53:42. [PMID: 35692057 PMCID: PMC9190127 DOI: 10.1186/s13567-022-01059-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/10/2022] [Indexed: 12/14/2022] Open
Abstract
This article focuses on the pathogenic significance of Helicobacter species naturally colonizing the stomach of dogs, cats and pigs. These gastric "non-Helicobacter (H.) pylori Helicobacter species" (NHPH) are less well-known than the human adapted H. pylori. Helicobacter suis has been associated with gastritis and decreased daily weight gain in pigs. Several studies also attribute a role to this pathogen in the development of hyperkeratosis and ulceration of the non-glandular stratified squamous epithelium of the pars oesophagea of the porcine stomach. The stomach of dogs and cats can be colonized by several Helicobacter species but their pathogenic significance for these animals is probably low. Helicobacter suis as well as several canine and feline gastric Helicobacter species may also infect humans, resulting in gastritis, peptic and duodenal ulcers, and low-grade mucosa-associated lymphoid tissue lymphoma. These agents may be transmitted to humans most likely through direct or indirect contact with dogs, cats and pigs. Additional possible transmission routes include consumption of water and, for H. suis, also consumption of contaminated pork. It has been described that standard H. pylori eradication therapy is usually also effective to eradicate the NHPH in human patients, although acquired antimicrobial resistance may occasionally occur and porcine H. suis strains are intrinsically less susceptible to aminopenicillins than non-human primate H. suis strains and other gastric Helicobacter species. Virulence factors of H. suis and the canine and feline gastric Helicobacter species include urease activity, motility, chemotaxis, adhesins and gamma-glutamyl transpeptidase. These NHPH, however, lack orthologs of cytotoxin-associated gene pathogenicity island and vacuolating cytotoxin A, which are major virulence factors in H. pylori. It can be concluded that besides H. pylori, gastric Helicobacter species associated with dogs, cats and pigs are also clinically relevant in humans. Although recent research has provided better insights regarding pathogenic mechanisms and treatment strategies, a lot remains to be investigated, including true prevalence rates, exact modes of transmission and molecular pathways underlying disease development and progression.
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Affiliation(s)
- Emily Taillieu
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
| | - Koen Chiers
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Irina Amorim
- Instituto de Investigação E Inovação Em Saúde (i3S), Universidade Do Porto, Porto, Portugal.,Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), Porto, Portugal.,School of Medicine and Biomedical Sciences, Porto University, Porto, Portugal
| | - Fátima Gärtner
- Instituto de Investigação E Inovação Em Saúde (i3S), Universidade Do Porto, Porto, Portugal.,Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), Porto, Portugal
| | - Dominiek Maes
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Christophe Van Steenkiste
- Department of Gastroenterology and Hepatology, University Hospital Antwerp, Antwerp University, Edegem, Belgium.,Department of Gastroenterology and Hepatology, General Hospital Maria Middelares, Ghent, Belgium
| | - Freddy Haesebrouck
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Husnik R, Klimes J, Kovarikova S, Kolorz M. Helicobacter Species and Their Association with Gastric Pathology in a Cohort of Dogs with Chronic Gastrointestinal Signs. Animals (Basel) 2022; 12:ani12101254. [PMID: 35625100 PMCID: PMC9137851 DOI: 10.3390/ani12101254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 02/06/2023] Open
Abstract
Prevalence of individual Helicobacter species, data evaluating their association with gastric pathology and comparison of accuracy of diagnostic techniques are limited. The aims of this study were to determine the prevalence of gastric Helicobacter species, their association with gastric pathology, and to compare diagnostic techniques. Gastric biopsies from 84 privately-owned dogs with chronic gastrointestinal signs were obtained endoscopically. Helicobacters were detected using PCR, cytology, urease test, and histopathology. PCR detected helicobacters in 71.4% of dogs. Helicobacter heilmannii sensu stricto (s.s.) was the predominant species. Mixed infection was detected in 40% of PCR positive dogs. Gastritis was diagnosed in 38.5% of Helicobacter positive and 47.4% of Helicobacter negative dogs. Mono-infection was associated with 2.4 times increased odds of having more severe inflammation compared to mixed infection. Erosions and ulcers were common endoscopic lesions. Cytology had sensitivity/specificity of 88.3/91.7%. Association between infection and lymphoid follicular hyperplasia was demonstrated.
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Affiliation(s)
- Roman Husnik
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, IN 47907, USA
- Correspondence:
| | - Jiri Klimes
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackeho 1/3, 612 42 Brno, Czech Republic;
| | - Simona Kovarikova
- Department of Animal Protection, Welfare and Behavior, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackeho 1/3, 612 42 Brno, Czech Republic;
| | - Michal Kolorz
- Department of Clinical Pharmacy, University Hospital Martin, 036 01 Martin, Slovakia;
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Yasuda T, Lee HS, Nam SY, Katoh H, Ishibashi Y, Yamagata Murayama S, Matsui H, Masuda H, Rimbara E, Sakurazawa N, Suzuki H, Yoshida H, Seto Y, Ishikawa S, Jeon SW, Nakamura M, Nomura S. Non-Helicobacter pylori Helicobacter (NHPH) positive gastric cancer. Sci Rep 2022; 12:4811. [PMID: 35314746 PMCID: PMC8938428 DOI: 10.1038/s41598-022-08962-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 03/14/2022] [Indexed: 12/28/2022] Open
Abstract
Genetic analysis and culturing techniques for gastric non-Helicobacter pylori Helicobacter (NHPH) are progressing. NHPH is reported to accompany nodular gastritis, gastric MALT lymphoma, and mild gastritis. However, only a few gastric cancer cases infected by NHPH have been reported. PCR analysis specific for NHPH and H. pylori was performed for DNA from gastric mucosa of 282 Korean gastric cancer patients, who were treated with endoscopic submucosal dissection. For more precise strain detection of NHPH, NHPH-positive mucosa was stained by immunohistochemistry specific for Helicobacter suis. The Cancer Genome Atlas (TCGA) classification was analyzed for these 3 gastric cancer sub-groups by in situ hybridization and immunohistochemistry. Among 281 patients, 3 patients (1.1%) were positive for NHPH. One patient (Patient 1) was also positive for H. pylori by PCR, another patient (Patient 3) was positive for serum IgG for H. pylori, and the other patient (Patient 2) had no evidence for H. pylori infection. Gastric mucosa of Patients 2 and 3 were positive for H. suis staining. All three NHPH-positive gastric cancers were located in the antrum, and belonged to the Chromosomal Instability Type of TCGA classification. Gastric NHPH can be a cause of gastric cancer, although likely with lower pathogenesis than H. pylori.
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Affiliation(s)
- Tomohiko Yasuda
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.,Department of Gastrointestinal Surgery, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan
| | - Hyun Seok Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
| | - Su Youn Nam
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
| | - Hiroto Katoh
- Department of Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuko Ishibashi
- Department of Breast and Endocrine Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Somay Yamagata Murayama
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hidenori Matsui
- Omura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Hiroki Masuda
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.,Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, Tokyo, Japan
| | - Emiko Rimbara
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Nobuyuki Sakurazawa
- Department of Gastrointestinal Surgery, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan
| | - Hideyuki Suzuki
- Department of Gastrointestinal Surgery, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, Tokyo, Japan
| | - Yasuyuki Seto
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shumpei Ishikawa
- Department of Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Seong Woo Jeon
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
| | | | - Sachiyo Nomura
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
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6
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Yamamoto K, Kondo Y, Sugiyama T, Sakamoto N. Protocol for generating a mouse model of gastric MALT lymphoma and the identification of MALT lymphoma cell populations by immunostaining. STAR Protoc 2022; 3:101155. [PMID: 35146453 PMCID: PMC8819470 DOI: 10.1016/j.xpro.2022.101155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Berlamont H, Bruggeman A, Bauwens E, Vandendriessche C, Clarebout E, Xie J, De Bruyckere S, Van Imschoot G, Van Wonterghem E, Ducatelle R, Santens P, Smet A, Haesebrouck F, Vandenbroucke RE. Gastric Helicobacter suis Infection Partially Protects against Neurotoxicity in A 6-OHDA Parkinson's Disease Mouse Model. Int J Mol Sci 2021; 22:ijms222111328. [PMID: 34768765 PMCID: PMC8582972 DOI: 10.3390/ijms222111328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 12/21/2022] Open
Abstract
The exact etiology of Parkinson’s disease (PD) remains largely unknown, but more and more research suggests the involvement of the gut microbiota. Interestingly, idiopathic PD patients were shown to have at least a 10 times higher prevalence of Helicobacter suis (H. suis) DNA in gastric biopsies compared to control patients. H. suis is a zoonotic Helicobacter species that naturally colonizes the stomach of pigs and non-human primates but can be transmitted to humans. Here, we investigated the influence of a gastric H. suis infection on PD disease progression through a 6-hydroxydopamine (6-OHDA) mouse model. Therefore, mice with either a short- or long-term H. suis infection were stereotactically injected with 6-OHDA in the left striatum and sampled one week later. Remarkably, a reduced loss of dopaminergic neurons was seen in the H. suis/6-OHDA groups compared to the control/6-OHDA groups. Correspondingly, motor function of the H. suis-infected 6-OHDA mice was superior to that in the non-infected 6-OHDA mice. Interestingly, we also observed higher expression levels of antioxidant genes in brain tissue from H. suis-infected 6-OHDA mice, as a potential explanation for the reduced 6-OHDA-induced cell loss. Our data support an unexpected neuroprotective effect of gastric H. suis on PD pathology, mediated through changes in oxidative stress.
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Affiliation(s)
- Helena Berlamont
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (H.B.); (E.B.); (S.D.B.); (R.D.); (F.H.)
| | - Arnout Bruggeman
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
- Department of Neurology, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Eva Bauwens
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (H.B.); (E.B.); (S.D.B.); (R.D.); (F.H.)
| | - Charysse Vandendriessche
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Elien Clarebout
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Junhua Xie
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Sofie De Bruyckere
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (H.B.); (E.B.); (S.D.B.); (R.D.); (F.H.)
| | - Griet Van Imschoot
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Elien Van Wonterghem
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Richard Ducatelle
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (H.B.); (E.B.); (S.D.B.); (R.D.); (F.H.)
| | - Patrick Santens
- Department of Neurology, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Annemieke Smet
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium;
| | - Freddy Haesebrouck
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (H.B.); (E.B.); (S.D.B.); (R.D.); (F.H.)
| | - Roosmarijn E. Vandenbroucke
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; (A.B.); (C.V.); (E.C.); (J.X.); (G.V.I.); (E.V.W.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
- Correspondence: ; Tel.: +32-9-3313730
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Yamamoto K, Kondo Y, Ohnishi S, Yoshida M, Sugiyama T, Sakamoto N. The TLR4-TRIF-type 1 IFN-IFN-γ pathway is crucial for gastric MALT lymphoma formation after Helicobacter suis infection. iScience 2021; 24:103064. [PMID: 34585114 PMCID: PMC8450267 DOI: 10.1016/j.isci.2021.103064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/20/2021] [Accepted: 08/26/2021] [Indexed: 01/12/2023] Open
Abstract
Helicobacter suis, a zoonotic infection-related bacterium, can induce gastric mucosa-associated lymphoid tissue (MALT) lymphoma in humans and animals. Recently, we reported that the formation of gastric MALT lymphoma after H. suis infection is induced by interferon (IFN)-γ activation. Here, we revealed that activation of the Toll-like receptor (TLR) 4–Toll/IL-1 receptor domain-containing adapter-inducing interferon-β (TRIF) pathway after H. suis infection is associated with the production of type 1 IFNs (IFN-α, IFN-β) by gastric epithelial cells. Additionally, these type 1 IFNs interact with type 1 IFN receptors on gastric B cells, facilitating the secretion of IFN-γ and the activation of which is enhanced by positive feedback regulation in B cells. These results suggest that the TLR4–TRIF-type 1 IFN–IFN-γ pathway is crucial in the development of gastric MALT lymphoma after H. suis infection and may, therefore, represent a therapeutic target for the prevention of this condition. H. suis MPLA causes type 1 IFN production in the stomach via TLR4–TRIF signaling The interaction between type 1 IFNs and IFNAR on B cells causes IFN-γ production Interaction of IFN-γ and IFNGR on B cells causes IFN-γ positive feedback regulation IFN-γ from gastric B cells induces gastric lymphoid follicles after H. suis infection
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Affiliation(s)
- Koji Yamamoto
- Research Division of Molecular Targeting Therapy and Prevention of GI Cancer, Hokkaido University Hospital, Sapporo, Hokkaido 060-8638, Japan.,Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060-8638, Japan
| | - Yasuyuki Kondo
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0017, Japan
| | - Shunsuke Ohnishi
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060-8638, Japan
| | - Masaru Yoshida
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0017, Japan.,Division of Metabolomics Research, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0017, Japan
| | - Toshiro Sugiyama
- Research Division of Molecular Targeting Therapy and Prevention of GI Cancer, Hokkaido University Hospital, Sapporo, Hokkaido 060-8638, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060-8638, Japan
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Tsukadaira T, Hayashi S, Ota H, Kobayashi N, Sekiguchi Y, Kodaira H, Matsumoto T, Horiuchi K, Negishi T, Kurahashi M. Acute gastric mucosal lesions caused by acute infection of non-Helicobacter pylori Helicobacter: a case report. Helicobacter 2021; 26:e12814. [PMID: 33977610 DOI: 10.1111/hel.12814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Non-Helicobacter pylori Helicobacter (NHPH) is not widely recognized as a cause of acute gastric mucosal lesions (AGML), as only a few cases of AGML caused by NHPH have been reported. We present here one case and examine the species and eradication of NHPH together with the three previously reported cases. CASE PRESENTATION A 52-year-old woman presented with a two-day history of severe epigastric pain, nausea, and vomiting. An esophagogastroduodenoscopy showed mucosal edema, multiple erosions, and ulcerations in the antrum. Biopsy specimens taken from the antrum revealed long spiral-shaped organisms, suggesting NHPH. As both serum anti-Helicobacter pylori (H. pylori) antibody and H. pylori stool antigen test were negative, this case was diagnosed as AGML caused by NHPH. After the administration of esomeprazole 20 mg for 14 days and the interval of the following 12 days, AGML was deemed to have been cured endoscopically. In addition, microscopic examination and PCR analysis confirmed the success of NHPH eradication. CONCLUSIONS NHPH should be considered a probable cause of AGML in cases that are not attributed to the other causes already recognized. Taking probability of spontaneous eradication into consideration, it is appropriate to start eradication therapy after confirming the chronicity of NHPH infection.
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Affiliation(s)
| | | | - Hiroyoshi Ota
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | | | | | | | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gumma University Graduate School of Health Sciences, Maebashi, Japan
| | - Kazuki Horiuchi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Tatsuya Negishi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Mari Kurahashi
- Department of Internal Medicine, Showa Inan General Hospital, Komagane, Japan
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10
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Tsukadaira T, Hayashi S, Ota H, Kobayashi N, Sekiguchi Y, Kodaira H, Matsumoto T, Horiuchi K, Negishi T, Kurahashi M. Prevalence, clinical features, and esophagogastroduodenoscopy (EGD) findings of non-Helicobacter pylori Helicobacter infection: A study of 50 cases at a single facility in Japan. Helicobacter 2021; 26:e12811. [PMID: 33908121 DOI: 10.1111/hel.12811] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM There are only a few reports of non-Helicobacter pylori Helicobacter (NHPH) gastritis in Japanese patients. We aimed to examine its prevalence, clinical features, and esophagogastroduodenoscopy (EGD) findings based on 50 patients encountered in one facility. MATERIALS AND METHODS Subjects were all patients who had undergone gastric mucosal biopsy endoscopically at Kenwakai Hospital for approximately 10 years. NHPH infection was diagnosed by microscopic findings of Giemsa staining performed on all specimens. PCR analysis of urease genes was performed to detect and identify NHPH, when informed consent was obtained. Helicobacter pylori-diagnostic tests were also performed. NHPH-infected patients were questioned about symptoms and animal contact. RESULTS NHPH gastritis was found in 50 of 3847 patients (1.30%). The percentage increased to 3.35% (30 of 896 patients) in the latter 2 years and 4 months with increasing recognition of its characteristic endoscopic findings by endoscopists. PCR analysis, performed in 30 patients, detected NHPH in 28 patients: 26 as Helicobacter suis and 2 as Helicobacter heilmanii/Helicobacter ailurogastricus. Helicobacter pylori-diagnostic tests were almost negative. However, anti-H. pylori antibody showed high-negative titer (3.0-9.9 U/ml) in 12. Of 50 patients (consisting of 49 men and 1 woman), almost all were asymptomatic, and 25 were keeping pets. Regarding EGD findings, in all 50 patients, "crack-like mucosa" and/or nodular gastritis was noted in gastric antrum, and regular arrangement of collecting venules (RAC) was noted in gastric corpus. None of the patients infected with NHPH were co-infected with H. pylori. CONCLUSIONS The prevalence was finally estimated to be approximately 3.35%. Helicobacter suis was the most common NHPH species. "Crack-like mucosa" and/or nodular gastritis in gastric antrum, RAC in gastric corpus, and H. pylori-negativity by H. pylori-diagnostic tests especially containing a high-negative titer of anti-H. pylori antibody may indicate NHPH infection.
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Affiliation(s)
| | | | - Hiroyoshi Ota
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | | | | | | | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Japan
| | - Kazuki Horiuchi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Tatsuya Negishi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Mari Kurahashi
- Department of Internal Medicine, Showainan General Hospital, Komagane, Japan
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11
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Takigawa H, Yuge R, Masaki S, Otani R, Kadota H, Naito T, Hayashi R, Urabe Y, Oka S, Tanaka S, Chayama K, Kitadai Y. Involvement of non-Helicobacter pylori helicobacter infections in Helicobacter pylori-negative gastric MALT lymphoma pathogenesis and efficacy of eradication therapy. Gastric Cancer 2021; 24:937-945. [PMID: 33638751 DOI: 10.1007/s10120-021-01172-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 02/12/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Eradication therapy is known to be effective against Helicobacter pylori-positive gastric MALT lymphoma but predicting the efficacy of eradication therapy against Helicobacter pylori-negative gastric MALT lymphoma is difficult. Recent reports have shown that non-Helicobacter pylori helicobacter infections induce gastric MALT lymphoma, and we aimed to clarify whether non-Helicobacter pylori helicobacter infections are associated with the efficacy of eradication therapy. METHODS We analyzed eradication therapy as a first-line treatment for 182 cases of gastric MALT lymphoma, classified according to Helicobacter pylori infection and API2-MALT1 mutation status. We also evaluated the non-Helicobacter pylori helicobacter infection status in 29 Helicobacter pylori-negative cases via PCR with DNA extracted from paraffin-embedded biopsy tissues. Finally, we analyzed the relationship between non-Helicobacter pylori helicobacter infection status and eradication therapy outcome. RESULTS The API2-MALT1 mutation was observed in 13/182 patients (7.1%), none of whom were cured by eradication therapy. Helicobacter pylori-negative cases had a significantly higher non-Helicobacter pylori helicobacter infection rate than Helicobacter pylori-positive cases (16/29, 55% vs. 3/29, 10%; P < 0.05). Among the Helicobacter pylori-negative cases, non-Helicobacter pylori helicobacter-positive cases had a significantly higher complete response rate than non-Helicobacter pylori helicobacter-negative cases (12/16, 75% vs. 3/13, 23%; P < 0.05). CONCLUSION Helicobacter pylori-negative and API2-MALT1-negative gastric MALT lymphoma cases exhibited a high rate of non-Helicobacter pylori helicobacter infections, which may have contributed to the success of eradication therapy. Therefore, we recommend eradication therapy as a first-line treatment for non-Helicobacter pylori helicobacter-positive gastric MALT lymphoma.
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Affiliation(s)
- Hidehiko Takigawa
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, 734-0037, Japan
| | - Ryo Yuge
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, 734-0037, Japan
| | - Satoshi Masaki
- Department of Health and Science, Prefectural University of Hiroshima, 1-1-71, Ujinahigashi, Minami-ku, Hiroshima, 734-8558, Japan
| | - Rina Otani
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, 734-0037, Japan
| | - Hiroki Kadota
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, 734-0037, Japan
| | - Toshikatsu Naito
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, 734-0037, Japan
| | - Ryohei Hayashi
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, 734-0037, Japan
| | - Yuji Urabe
- Division of Regeneration and Medicine Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima, 734-0037, Japan
| | - Shiro Oka
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, 734-0037, Japan
| | - Shinji Tanaka
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, 734-0037, Japan
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, 734-0037, Japan
| | - Yasuhiko Kitadai
- Department of Health and Science, Prefectural University of Hiroshima, 1-1-71, Ujinahigashi, Minami-ku, Hiroshima, 734-8558, Japan.
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12
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Kubota-Aizawa S, Matsubara Y, Kanemoto H, Mimuro H, Uchida K, Chambers J, Tsuboi M, Ohno K, Fukushima K, Kato N, Yotsuyanagi H, Tsujimoto H. Transmission of Helicobacter pylori between a human and two dogs: A case report. Helicobacter 2021; 26:e12798. [PMID: 33818862 DOI: 10.1111/hel.12798] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 02/24/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Whereas non-Helicobacter pylori helicobacters, which are frequently detected in the stomachs of dogs and cats as a source of zoonoses, have attracted considerable attention, the role of pets in H. pylori epidemiology is unclear. In our previous study, an H. pylori infection was detected in the stomach of a dog (Dog 1). Here, we investigated the H. pylori infection status in the female offspring of Dog 1 (Dog 2) and its owner within the same household. MATERIALS AND METHODS Biopsy specimens were obtained from the dog's owner and tested for H. pylori. DNA from gastric biopsy samples of Dog 1, gastric fluid sediment of Dog 2, and bacteria from the stomach of the owner was obtained, and Helicobacter genus- and species-specific PCRs were performed. Then, sequence analyses of the partial region of the ureAB gene were conducted. RESULTS Samples from both dogs and the owner reacted positively in the genus-specific PCR and negative in the Helicobacter felis-, Helicobacter bizzozeronii-, and Helicobacter heilmannii sensu stricto-specific PCRs. All three samples also reacted positively in the H. pylori-specific PCR. Sequences of the partial ureAB gene from all subjects were identical. CONCLUSIONS The results suggested that the two dogs and their owner were infected with an identical H. pylori strain. This report is the first to demonstrate that H. pylori can be transmitted between humans and dogs. Further studies are required to investigate the risk factors for the transmission of H. pylori between humans and dogs from the perspective of preventive epidemiology.
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Affiliation(s)
- Sanae Kubota-Aizawa
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yasuo Matsubara
- Department of General Medicine, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hideyuki Kanemoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Hitomi Mimuro
- Department of Infection Microbiology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.,Department of Infectious Diseases Control, International Research Center for Infectious Diseases, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Kazuyuki Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - James Chambers
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masaya Tsuboi
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koichi Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kenjiro Fukushima
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Naoya Kato
- Department of Gastroenterology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroshi Yotsuyanagi
- Department of General Medicine, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hajime Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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13
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Evidence of Helicobacter spp. in Saliva and Gastric Mucosa of Domestic Dogs in the Central Region of Rio Grande do Sul, Brazil. Vet Med Int 2021; 2021:8857231. [PMID: 33575024 PMCID: PMC7864744 DOI: 10.1155/2021/8857231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 11/22/2020] [Accepted: 01/06/2021] [Indexed: 01/03/2023] Open
Abstract
Helicobacter pylori is a spiral-shaped bacterium, which plays a role in the aetiology of gastric diseases in humans. Non-H. pylori Helicobacter (NHPH) species naturally colonise the stomach of animals and also induce gastric lesions in humans, highlighting their zoonotic importance. We evaluated the gastric bacterial colonisation density and gastric lesions and sought to identify the main phylogenetic groups of the Helicobacter spp. obtained from dogs in the central region of Rio Grande do Sul, Brazil, with this study aiming to investigate the occurrence of Helicobacter spp. in saliva and gastric samples from these dogs. This study included 35 dogs and used analysis such as cytology, histopathology, PCR, rapid urease testing, and phylogenetic analysis. Of the dogs, 94.3% were positive for Helicobacter spp., and these bacteria were present in the stomach of 32 dogs and saliva of eight. Respectively, eight, 15, and nine dogs had mild, moderate, and severe colonisation. Lymphocytic-plasmacytic infiltrate was the main gastric lesion. However, the presence of Helicobacter and the density appeared to be unrelated to the gastric lesions. The samples possessed a high nucleotide identity with remarkably similar sequences among some of the species of NHPH such as H. heilmannii s.s., H. salomonis, H. felis, and H. bizzozeronii. The saliva of domestic dogs, even of those who appear clinically healthy, can cause Helicobacter infection in humans and other animals, with, in these dogs, increased density, occurrence rate, and predominance of NHPH of zoonotic importance being found in the stomach with a lower occurrence of Helicobacter spp. in the saliva.
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14
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Hu S, Niu L, Wu L, Zhu X, Cai Y, Jin D, Yan L, Zhao F. Genomic analysis of Helicobacter himalayensis sp. nov. isolated from Marmota himalayana. BMC Genomics 2020; 21:826. [PMID: 33228534 PMCID: PMC7685656 DOI: 10.1186/s12864-020-07245-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/18/2020] [Indexed: 12/17/2022] Open
Abstract
Background Helicobacter himalayensis was isolated from Marmota himalayana in the Qinghai-Tibet Plateau, China, and is a new non-H. pylori species, with unclear taxonomy, phylogeny, and pathogenicity. Results A comparative genomic analysis was performed between the H. himalayensis type strain 80(YS1)T and other the genomes of Helicobacter species present in the National Center for Biotechnology Information (NCBI) database to explore the molecular evolution and potential pathogenicity of H. himalayensis. H. himalayensis 80(YS1)T formed a clade with H. cinaedi and H. hepaticus that was phylogenetically distant from H. pylori. The H. himalayensis genome showed extensive collinearity with H. hepaticus and H. cinaedi. However, it also revealed a low degree of genome collinearity with H. pylori. The genome of 80(YS1)T comprised 1,829,936 bp, with a 39.89% GC content, a predicted genomic island, and 1769 genes. Comparatively, H. himalayensis has more genes for functions in “cell wall/membrane/envelope biogenesis” and “coenzyme transport and metabolism” sub-branches than the other compared helicobacters, and its genome contained 42 virulence factors genes, including that encoding cytolethal distending toxin (CDT). Conclusions We characterized the H. himalayensis 80(YS1)T genome, its phylogenetic position, and its potential pathogenicity. However, further understanding of the pathogenesis of this potentially pathogenic bacterium is required, which might help to manage H. himalayensis-induced diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07245-y.
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Affiliation(s)
- Shoukui Hu
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China
| | - Lina Niu
- Department of Pathogen Biology, School of Basic Medicine and Lifescience, Hainan Medical University, Haikou, 571101, China
| | - Lei Wu
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China
| | - Xiaoxue Zhu
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China
| | - Yu Cai
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China
| | - Dong Jin
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - Linlin Yan
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China.
| | - Fan Zhao
- Department of Clinical Laboratory, Peking University Shougang Hospital, Beijing, 100144, China.
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15
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Nakamura M, Øverby A, Michimae H, Matsui H, Takahashi S, Mabe K, Shimoyama T, Sasaki M, Terao S, Kamada T, Yanaka A, Iwamoto J, Tanabe S, Tari A, Nasu S, Suzuki H, Yamagata Murayama S. PCR analysis and specific immunohistochemistry revealing a high prevalence of non-Helicobacter pylori Helicobacters in Helicobacter pylori-negative gastric disease patients in Japan: High susceptibility to an Hp eradication regimen. Helicobacter 2020; 25:e12700. [PMID: 32790220 DOI: 10.1111/hel.12700] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/14/2020] [Accepted: 04/19/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND The clinical significance of non-Helicobacter pylori Helicobacter (NHPH) is still unknown. There are many reports of NHPH-infected patients suffering from gastric diseases. Here, we investigated the polymerase chain reaction (PCR) positivity of NHPH infection in gastric disease patients who were negative for H. pylori (Hp) by the rapid urease test and by pathological observation. MATERIALS AND METHODS We collected the 296 endoscopically obtained gastric mucosal samples of Hp-negative gastric disease patients diagnosed based on a rapid urease test and pathology from 17 hospitals in Japan from September 2013 to June 2019, and we analyzed the existence of Hp and NHPH by PCR. The samples were also treated by indirect immunohistochemistry using an anti-Helicobacter suis VacA paralog antibody and were observed by confocal laser microscopy. RESULTS Among the 236 non-Hp-eradicated cases, 49 cases (20.8%) were positive for NHPH. Among them, 20 cases were positive for Helicobacter suis, 7 cases were positive for Helicobacter heilmannii sensu stricto/ Helicobacter ailurogastricus (Hhss/Ha), and the other 22 cases could not be identified. The regional differences in the infection rates were significant. Forty percent of the nodular gastritis cases, 24% of the MALT lymphoma, 17% of the chronic gastritis cases, and 33% of the gastroduodenal ulcer cases were NHPH positive. Forty-five patients had been treated with one of the four types of combinations of a proton pump inhibitor and two antibiotics, and in all of these cases, the NHPH diagnosed by PCR was successfully eradicated. Immunohistochemistry using the Helicobacter suis-specific HsvA antibody coincided well with the PCR results. Among the 29 post-Hp eradication cases, three were NHPH positive, including one Hhss/Ha-positive case. Thus, approx. 20% of the Hp-negative non-Hp-eradicated gastric disease patients treated at 17 hospitals in Japan were infected with NHPH.
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Affiliation(s)
| | - Anders Øverby
- Center of Education in Kongsvinger, Kongsvinger, Norway
| | - Hirofumi Michimae
- Department of Clinical Medicine (Biostatistics), School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Hidenori Matsui
- Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | | | - Katsuhiro Mabe
- Department of Gastroenterology, National Hospital Organization Hakodate National Hospital, Hakodate, Japan
| | | | - Makoto Sasaki
- Department of Gastroenterology, Aichi Medical University, Nagakute, Japan
| | | | - Tomoari Kamada
- Department of Health Care Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Akinori Yanaka
- University of Tsukuba Hitachi Medical Education and Research Center, University of Tsukuda, Hitachi, Japan
| | - Junichi Iwamoto
- Department of Gastroenterology, Tokyo Medical University Ibaraki Medical Center, Amicho, Japan
| | - Satoshi Tanabe
- Department of Advanced Medicine Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, Sagamihara, Japan
| | - Akira Tari
- Sixth Department of Internal Medicine, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Hiroshima, Japan
| | - Shinji Nasu
- Department of Gastroenterology, Ikeikai Inobe Hospital, Oita, Japan
| | - Hidekazu Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
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16
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Oren A, Garrity GM, Parker CT, Chuvochina M, Trujillo ME. Lists of names of prokaryotic Candidatus taxa. Int J Syst Evol Microbiol 2020; 70:3956-4042. [DOI: 10.1099/ijsem.0.003789] [Citation(s) in RCA: 782] [Impact Index Per Article: 195.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We here present annotated lists of names of Candidatus taxa of prokaryotes with ranks between subspecies and class, proposed between the mid-1990s, when the provisional status of Candidatus taxa was first established, and the end of 2018. Where necessary, corrected names are proposed that comply with the current provisions of the International Code of Nomenclature of Prokaryotes and its Orthography appendix. These lists, as well as updated lists of newly published names of Candidatus taxa with additions and corrections to the current lists to be published periodically in the International Journal of Systematic and Evolutionary Microbiology, may serve as the basis for the valid publication of the Candidatus names if and when the current proposals to expand the type material for naming of prokaryotes to also include gene sequences of yet-uncultivated taxa is accepted by the International Committee on Systematics of Prokaryotes.
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Affiliation(s)
- Aharon Oren
- The Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401 Jerusalem, Israel
| | - George M. Garrity
- NamesforLife, LLC, PO Box 769, Okemos MI 48805-0769, USA
- Department of Microbiology & Molecular Genetics, Biomedical Physical Sciences, Michigan State University, East Lansing, MI 48824-4320, USA
| | | | - Maria Chuvochina
- Australian Centre for Ecogenomics, University of Queensland, St. Lucia QLD 4072, Brisbane, Australia
| | - Martha E. Trujillo
- Departamento de Microbiología y Genética, Campus Miguel de Unamuno, Universidad de Salamanca, 37007, Salamanca, Spain
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17
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Shafaie S, Kaboosi H, Peyravii Ghadikolaii F. Prevalence of non Helicobacter pylori gastric Helicobacters in Iranian dyspeptic patients. BMC Gastroenterol 2020; 20:190. [PMID: 32546214 PMCID: PMC7298804 DOI: 10.1186/s12876-020-01331-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 06/03/2020] [Indexed: 02/06/2023] Open
Abstract
Background Non Helicobacter pylori gastric Helicobacters (NHPGHs) are associated with a range of upper gastrointestinal symptoms, histologic and endoscopic findings. For the first time in Iran, we performed a cross-sectional study in order to determine the prevalence of five species of NHPGHs in patients presenting with dyspepsia. Methods The participants were divided into H. pylori-infected and NHPGH-infected groups, based on the rapid urease test, histological analysis of biopsies, and PCR assay of ureA, ureB, and ureAB genes. The study included 428 gastric biopsies form dyspeptic patients, who did not receive any treatment for H. pylori. The samples were collected and sent to the laboratory within two years. H. pylori was identified in 368 samples, which were excluded from the study. Finally, a total of 60 non-H. pylori samples were studied for NHPGH species. Results The overall frequency of NHPGH species was 10 for H. suis (three duodenal ulcer, three gastritis, and four gastric ulcer samples), 10 for H. felis (one gastritis, three duodenal ulcer, and six gastric ulcer samples), 20 for H. salomonis (four duodenal ulcer, five gastritis, and 11 gastric ulcer samples), 13 for H. heilmannii (three gastritis, five duodenal ulcer, and five gastric ulcer samples), and 7 for H. bizzozeronii (zero gastric ulcer, two duodenal ulcer, and five gastritis samples). Conclusions Given our evidence about the possibility of involvement of NHPGHs in patients suffering from gastritis and nonexistence of mixed H. pylori infection, bacteriological testing of subjects negative for H. pylori becomes clinically relevant and important. Our findings suggest H. salomonis has the highest rate among the NHPGH species in Iranian dyspeptic patients.
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Affiliation(s)
- Shakiba Shafaie
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Hami Kaboosi
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran.
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18
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Takemura LS, Marcasso RA, Lorenzetti E, Alfieri AA, Bracarense APL. Helicobacter infection in the hepatobiliary system and hepatic lesions: a possible association in dogs. Braz J Microbiol 2018; 50:297-305. [PMID: 30637645 DOI: 10.1007/s42770-018-0003-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/11/2018] [Indexed: 12/25/2022] Open
Abstract
Helicobacter infection has been associated with hepatobiliary diseases in humans and animals. The aims of this study were to identify Helicobacter species in the hepatobiliary tract of dogs and to elucidate the possible association of these bacteria in liver diseases. Twenty-seven gastric and hepatobiliary samples were collected from 33 dogs with hepatic lesions and 17 dogs with no liver histological changes. Warthin-Starry staining, immunohistochemical assay, and PCR were performed to detect the presence of Helicobacter. Helicobacter genus was detected in 21.2% of the samples with hepatic lesions. The main lesion was chronic hepatitis. Immunohistochemistry revealed infection in liver (1/5) and gallbladder (1/3) 32 samples. The sequence analysis of seven amplicons of the 16S rRNA gene of Helicobacter genus from hepatobiliary samples showed 97.8 to 100% of nucleotide identity with gastric helicobacter. One amplicon of the ureA and ureB gene of Helicobacter genus from the stomach showed 89.1 to 90.7% nucleotide identity with H. heilmannii. The presence of Helicobacter genus in liver samples showing hepatic lesions suggests the involvement of these bacteria in the etiology of hepatobiliary disease in dogs. DNA sequences were similar to gastric Helicobacter species, reinforcing the hypothesis of bacterial translocation from the stomach to liver by the biliary pathway.
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Affiliation(s)
- L S Takemura
- Laboratory of Animal Pathology, School of Veterinary Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, Londrina, Parana, 86057-970, Brazil
| | - R A Marcasso
- Laboratory of Animal Pathology, School of Veterinary Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, Londrina, Parana, 86057-970, Brazil
| | - E Lorenzetti
- Laboratory of Animal Virology, School of Veterinary Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, Londrina, Parana, 86057-970, Brazil
| | - A A Alfieri
- Laboratory of Animal Virology, School of Veterinary Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, Londrina, Parana, 86057-970, Brazil
| | - A P L Bracarense
- Laboratory of Animal Pathology, School of Veterinary Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, Londrina, Parana, 86057-970, Brazil.
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19
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De Witte C, Taminiau B, Flahou B, Hautekiet V, Daube G, Ducatelle R, Haesebrouck F. In-feed bambermycin medication induces anti-inflammatory effects and prevents parietal cell loss without influencing Helicobacter suis colonization in the stomach of mice. Vet Res 2018; 49:35. [PMID: 29636083 PMCID: PMC5894178 DOI: 10.1186/s13567-018-0530-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/21/2018] [Indexed: 12/18/2022] Open
Abstract
The minimum inhibitory concentration of bambermycin on three porcine Helicobacter suis strains was shown to be 8 μg/mL. The effect of in-feed medication with this antibiotic on the course of a gastric infection with one of these strains, the host response and the gastric microbiota was determined in mice, as all of these parameters may be involved in gastric pathology. In H. suis infected mice which were not treated with bambermycin, an increased number of infiltrating B-cells, T-cells and macrophages in combination with a Th2 response was demonstrated, as well as a decreased parietal cell mass. Compared to this non-treated, infected group, in H. suis infected mice medicated with bambermycin, gastric H. suis colonization was not altered, but a decreased number of infiltrating T-cells, B-cells and macrophages as well as downregulated expressions of IL-1β, IL-8M, IL-10 and IFN-γ were demonstrated and the parietal cell mass was not affected. In bambermycin treated mice that were not infected with H. suis, the number of infiltrating T-cells and expression of IL-1β were lower than in non-infected mice that did not receive bambermycin. Gastric microbiota analysis indicated that the relative abundance of bacteria that might exert unfavorable effects on the host was decreased during bambermycin supplementation. In conclusion, bambermycin did not affect H. suis colonization, but decreased gastric inflammation and inhibited the effects of a H. suis infection on parietal cell loss. Not only direct interaction of H. suis with parietal cells, but also inflammation may play a role in death of these gastric acid producing cells.
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Affiliation(s)
- Chloë De Witte
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
| | - Bernard Taminiau
- Department of Food Sciences, FARAH, Université de Liège, Avenue de Cureghem 10, 4000, Liège, Belgium
| | - Bram Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | | | - Georges Daube
- Department of Food Sciences, FARAH, Université de Liège, Avenue de Cureghem 10, 4000, Liège, Belgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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20
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Gorlé N, Blaecher C, Bauwens E, Vandendriessche C, Balusu S, Vandewalle J, Van Cauwenberghe C, Van Wonterghem E, Van Imschoot G, Liu C, Ducatelle R, Libert C, Haesebrouck F, Smet A, Vandenbroucke RE. The choroid plexus epithelium as a novel player in the stomach-brain axis during Helicobacter infection. Brain Behav Immun 2018; 69:35-47. [PMID: 29258921 DOI: 10.1016/j.bbi.2017.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 12/11/2017] [Accepted: 12/15/2017] [Indexed: 12/21/2022] Open
Abstract
Several studies suggest a link between shifts in gut microbiota and neurological disorders. Recently, we reported a high prevalence of Helicobacter suis (H. suis) in patients with Parkinson's disease. Here, we evaluated the effect of gastric H. suis infection on the brain in mice. One month of infection with H. suis resulted in increased brain inflammation, reflected in activation of microglia and cognitive decline. Additionally, we detected choroid plexus inflammation and disruption of the epithelial blood-cerebrospinal fluid (CSF) barrier upon H. suis infection, while the endothelial blood-brain barrier (BBB) remained functional. These changes were accompanied by leakage of the gastrointestinal barrier and low-grade systemic inflammation, suggesting that H. suis-evoked gastrointestinal permeability and subsequent peripheral inflammation induces changes in brain homeostasis via changes in blood-CSF barrier integrity. In conclusion, this study shows for the first time that H. suis infection induces inflammation in the brain associated with cognitive decline and that the choroid plexus is a novel player in the stomach-brain axis.
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Affiliation(s)
- N Gorlé
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - C Blaecher
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium
| | - E Bauwens
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium
| | - C Vandendriessche
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - S Balusu
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - J Vandewalle
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - C Van Cauwenberghe
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - E Van Wonterghem
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - G Van Imschoot
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - C Liu
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium
| | - R Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium
| | - C Libert
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - F Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium
| | - A Smet
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, B-9820 Merelbeke, Belgium; Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, B-2610 Antwerp, Belgium
| | - R E Vandenbroucke
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
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21
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Kawakubo M, Horiuchi K, Matsumoto T, Nakayama J, Akamatsu T, Katsuyama T, Ota H, Sagara J. Cholesterol-α-glucosyltransferase gene is present in most Helicobacter species including gastric non-Helicobacter pylori helicobacters obtained from Japanese patients. Helicobacter 2018; 23. [PMID: 29110387 DOI: 10.1111/hel.12449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Non-Helicobacter pylori helicobacters (NHPHs) besides H. pylori infect human stomachs and cause chronic gastritis and mucosa-associated lymphoid tissue lymphoma. Cholesteryl-α-glucosides have been identified as unique glycolipids present in H. pylori and some Helicobacter species. Cholesterol-α-glucosyltransferase (αCgT), a key enzyme for the biosynthesis of cholesteryl-α-glucosides, plays crucial roles in the pathogenicity of H. pylori. Therefore, it is important to examine αCgTs of NHPHs. MATERIALS AND METHODS Six gastric NHPHs were isolated from Japanese patients and maintained in mouse stomachs. The αCgT genes were amplified by PCR and inverse PCR. We retrieved the αCgT genes of other Helicobacter species by BLAST searches in GenBank. RESULTS αCgT genes were present in most Helicobacter species and in all Japanese isolates examined. However, we could find no candidate gene for αCgT in the whole genome of Helicobacter cinaedi and several enterohepatic species. Phylogenic analysis demonstrated that the αCgT genes of all Japanese isolates show high similarities to that of a zoonotic group of gastric NHPHs including Helicobacter suis, Helicobacter heilmannii, and Helicobacter ailurogastricus. Of 6 Japanese isolates, the αCgT genes of 4 isolates were identical to that of H. suis, and that of another 2 isolates were similar to that of H. heilmannii and H. ailurogastricus. CONCLUSIONS All gastric NHPHs examined showed presence of αCgT genes, indicating that αCgT may be beneficial for these helicobacters to infect human and possibly animal stomachs. Our study indicated that NHPHs could be classified into 2 groups, NHPHs with αCgT genes and NHPHs without αCgT genes.
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Affiliation(s)
- Masatomo Kawakubo
- Department of Molecular Pathology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Kazuki Horiuchi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Japan
| | - Jun Nakayama
- Department of Molecular Pathology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Taiji Akamatsu
- Endoscopy Center, Suzaka Hospital, Nagano Prefectural Shinshu Medical Center, Suzaka, Japan
| | | | - Hiroyoshi Ota
- Department of Biomedical Laboratory Science, School of Health Sciences, Shinshu University, Matsumoto, Japan
| | - Junji Sagara
- Department of Biomedical Laboratory Science, School of Health Sciences, Shinshu University, Matsumoto, Japan
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22
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Evidence for a primate origin of zoonotic Helicobacter suis colonizing domesticated pigs. ISME JOURNAL 2017; 12:77-86. [PMID: 28885626 DOI: 10.1038/ismej.2017.145] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 05/11/2017] [Accepted: 08/04/2017] [Indexed: 12/21/2022]
Abstract
Helicobacter suis is the second most prevalent Helicobacter species in the stomach of humans suffering from gastric disease. This bacterium mainly inhabits the stomach of domesticated pigs, in which it causes gastric disease, but it appears to be absent in wild boars. Interestingly, it also colonizes the stomach of asymptomatic rhesus and cynomolgus monkeys. The origin of modern human-, pig- or non-human primate-associated H. suis strains in these respective host populations was hitherto unknown. Here we show that H. suis in pigs possibly originates from non-human primates. Our data suggest that a host jump from macaques to pigs happened between 100 000 and 15 000 years ago and that pig domestication has had a significant impact on the spread of H. suis in the pig population, from where this pathogen occasionally infects humans. Thus, in contrast to our expectations, H. suis appears to have evolved in its main host in a completely different way than its close relative Helicobacter pylori in humans.
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23
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Zhao WJ, Tian ZB, Yao SS, Yu YN, Zhang CP, Li XY, Mao T, Jing X, Ding XL, Yang RM, Liu YQ, Zhang SQ, Yang L. High-fat-diet-induced obesity upregulates the expression of lymphoid chemokines and promotes the formation of gastric lymphoid follicles after Helicobacter suis infection. Pathog Dis 2017; 75:4082734. [PMID: 28911036 DOI: 10.1093/femspd/ftx101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/10/2017] [Indexed: 12/13/2022] Open
Affiliation(s)
- Wen-jun Zhao
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Zi-bin Tian
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Shan-shan Yao
- Clinical Skill Training Center, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Ya-nan Yu
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Cui-ping Zhang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Xiao-yu Li
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Tao Mao
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Xue Jing
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Xue-li Ding
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Ruo-ming Yang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Ya-qian Liu
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Shuai-qing Zhang
- Department of Gastroenterology, Qilu Hospital of Shandong University (Qingdao), Qingdao 266000, China
| | - Lin Yang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
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24
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De Witte C, Devriendt B, Flahou B, Bosschem I, Ducatelle R, Smet A, Haesebrouck F. Helicobacter suis induces changes in gastric inflammation and acid secretion markers in pigs of different ages. Vet Res 2017; 48:34. [PMID: 28619040 PMCID: PMC5473008 DOI: 10.1186/s13567-017-0441-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 05/31/2017] [Indexed: 01/02/2023] Open
Abstract
Gastric mRNA expression of markers for acid secretion and inflammation and presence of gastric ulceration was studied in naturally Helicobacter suis-infected and non-infected 2–3 months old, 6–8 months old and adult pigs. In H. suis-infected 2–3 months old pigs, IL-8 and IL-1β transcript levels were upregulated in the pyloric gland zone, indicating an innate immune response. A similar response was demonstrated in the fundic gland zone of adult pigs, potentially due to a shift of H. suis colonization from the pyloric to the fundic gland zone. A Treg response in combination with decreased expressions of IL-8, IL-17A and IFN-γ was indicated to be present in the H. suis-infected 6–8 months old pigs, which may have contributed to persistence of H. suis. In H. suis-infected adult pigs, a Treg response accompanied by a Th17 response was indicated, which may have played a role in the decreased number of H. suis bacteria in the stomach of this age group. The decreased G-cell mass and upregulated expression of somatostatin indicated decreased acid secretion in H. suis-infected 6–8 months old pigs. In H. suis-infected adult pigs, upregulation of most markers for gastric acid secretion and increased G-cell mass was detected. Presence of severe hyperkeratosis and erosions in the non-glandular part of the stomach were mainly seen in the H. suis-positive groups. These results show that H. suis infection affects the expression of markers for acid secretion and inflammation and indicate that these effects differ depending on the infection phase.
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Affiliation(s)
- C De Witte
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
| | - B Devriendt
- Department of Virology, Parasitology, Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - B Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - I Bosschem
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - R Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - A Smet
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, Antwerp University, Antwerp, Belgium
| | - F Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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25
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Blaecher C, Bauwens E, Tay A, Peters F, Dobbs S, Dobbs J, Charlett A, Ducatelle R, Haesebrouck F, Smet A. A novel isolation protocol and probe-based RT-PCR for diagnosis of gastric infections with the zoonotic pathogen Helicobacter suis. Helicobacter 2017; 22. [PMID: 28029188 DOI: 10.1111/hel.12369] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Helicobacter suis is a very fastidious microorganism associated with gastritis, gastric ulcers, and mucosa-associated lymphoid tissue lymphoma in humans. In vitro isolation of this agent from human patients has so far been unsuccessful. MATERIALS AND METHODS A probe-based real-time PCR (RT-PCR) for the rapid detection of H. suis in gastric biopsies was developed. Secondly, a mouse-passage-based protocol was optimized for isolation of low numbers of viable H. suis bacteria. Mice were inoculated with different numbers of viable H. suis (102 -108 ) and kept for 4 weeks to allow multiplication of this pathogen. RESULTS The probe-based real-time PCR (RT-PCR) exhibited a high degree of diagnostic specificity and analytical sensitivity, high linear correlations (r2 between 0.995 and 0.999), and high amplification efficiencies (>90%) for H. suis. No cross-reactivity was detected with human, porcine, non-human primate, and murine DNA nor with DNA from other bacteria including Helicobacter spp. and Campylobacter spp. H. suis was successfully re-isolated from the stomach of mice inoculated with at least 104 viable H. suis, using a biphasic medium (pH 5), consisting of Brucella agar with Brucella broth on top, both supplemented with vitox supplement, Campylobacter-selective supplement, amphotericin (5 μg/mL), HCl (0.05%), fetal bovine serum (20%), and linezolid (5 μg/mL). Linezolid was necessary to inhibit proliferation of contaminants, including lactobacilli. CONCLUSION The methods described above can be implemented for detection or isolation of H. suis from human gastric biopsies.
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Affiliation(s)
- Caroline Blaecher
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Eva Bauwens
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Alfred Tay
- The Marshall Centre for Infectious Diseases Research and Training, University of Western Australia, Perth, WA, Australia
| | - Fanny Peters
- The Marshall Centre for Infectious Diseases Research and Training, University of Western Australia, Perth, WA, Australia
| | - Sylvia Dobbs
- Institute of Pharmaceutical Science, King's College London, London, UK.,The Maudsley Hospital, London, UK.,Department of Gastroenterology, King's College Hospital, London, UK
| | - John Dobbs
- Institute of Pharmaceutical Science, King's College London, London, UK.,The Maudsley Hospital, London, UK.,Department of Gastroenterology, King's College Hospital, London, UK
| | - André Charlett
- Institute of Pharmaceutical Science, King's College London, London, UK.,Statistics Unit, Centre for Infectious Disease Surveillance and Control, Public Health England, London, UK
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Annemieke Smet
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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26
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Kubota-Aizawa S, Ohno K, Fukushima K, Kanemoto H, Nakashima K, Uchida K, Chambers JK, Goto-Koshino Y, Watanabe T, Sekizaki T, Mimuro H, Tsujimoto H. Epidemiological study of gastric Helicobacter spp. in dogs with gastrointestinal disease in Japan and diversity of Helicobacter heilmannii sensu stricto. Vet J 2017; 225:56-62. [PMID: 28720300 DOI: 10.1016/j.tvjl.2017.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 03/17/2017] [Accepted: 04/09/2017] [Indexed: 12/12/2022]
Abstract
Epidemiological and pathological studies of Helicobacter spp. in canine stomachs in Japan were performed to investigate strain specific pathogenicity. Gastric biopsies from 144 dogs with gastrointestinal diseases were evaluated for the presence of Helicobacter spp. using genus and species specific PCRs for Helicobacter felis, Helicobacter bizzozeronii, Helicobacter heilmannii sensu stricto (s.s.) and Helicobacter pylori. PCR indicated that 50/144 (34.7%) dogs were infected with Helicobacter spp. Of the genus positive samples, 21/50 could not be amplified by any of the species specific PCRs. To investigate Helicobacter at the species level, partial ureAB gene sequences from 48/50 genus positive samples were determined; 47 strains were identified. Thirty-five strains from 45 cases were closely related to H. heilmannii s.s. (89-99% sequence similarity), seven strains from seven cases were closely related to H. bizzozeronii (95-99% sequence similarity), three strains from three cases were closely related to Helicobacter felis (86%, 98% and 99% sequence similarity), one strain from one case was closely related to Helicobacter salomonis (99% sequence similarity) and one strain from one case was closely related to H. pylori (99% sequence similarity). Dogs infected with Helicobacter spp. most similar to H. heilmannii s.s. had a higher frequency of moderate to severe gastritis than dogs negative for Helicobacter spp. (P=0.044). In conclusion, the predominant Helicobacter spp. detected in canine stomachs in our study were most closely related to H. heilmannii s.s. and displayed substantial genetic diversity. Infection with Helicobacter spp. may be associated with more severe gastritis in dogs.
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Affiliation(s)
- Sanae Kubota-Aizawa
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Koichi Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
| | - Kenjiro Fukushima
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hideyuki Kanemoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ko Nakashima
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kazuyuki Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - James K Chambers
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Yuko Goto-Koshino
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Takayasu Watanabe
- Research Centre for Food Safety, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tsutomu Sekizaki
- Research Centre for Food Safety, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hitomi Mimuro
- Division of Bacteriology, Department of Infectious Diseases Control, International Research Centre for Infectious Diseases, Institute of Medical Science, University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Hajime Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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27
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Bosschem I, Flahou B, Bakker J, Heuvelman E, Langermans JAM, De Bruyne E, Joosten M, Smet A, Ducatelle R, Haesebrouck F. Comparative virulence of in vitro-cultured primate- and pig-associated Helicobacter suis strains in a BALB/c mouse and a Mongolian gerbil model. Helicobacter 2017; 22. [PMID: 27558281 DOI: 10.1111/hel.12349] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Helicobacter suis (H. suis) is the most prevalent gastric non-H. pylori Helicobacter species in humans. This bacterium mainly colonizes the stomach of pigs, but it has also been detected in the stomach of nonhuman primates. The aim of this study was to obtain better insights into potential differences between pig- and primate-associated H. suis strains in virulence and pathogenesis. MATERIALS AND METHODS In vitro-isolated H. suis strains obtained from pigs, cynomolgus monkeys (Macaca fascicularis), and rhesus monkeys (Macaca mulatta) were used for intragastric inoculation of BALB/c mice and Mongolian gerbils. Nine weeks and six months later, samples of the stomach of inoculated and control animals were taken for PCR analysis and histopathological examination. RESULTS The cynomolgus monkey-associated H. suis strain only colonized the stomach of mice, but not of Mongolian gerbils. All other H. suis strains colonized the stomach in both rodent models. In all colonized animals, severe gastric inflammation was induced. Gastric lymphoid follicles and destruction of the antral epithelium were observed in infected gerbils, but not in mice. Infection with both pig- and primate-associated H. suis strains evoked a similar marked Th17 response in mice and gerbils, accompanied by increased CXCL-13 expression levels. CONCLUSIONS Apart from the cynomolgus monkey-associated strain which was unable of colonizing the stomach of Mongolian gerbils, no substantial differences in virulence were found in rodent models between in vitro-cultured pig-associated, cynomolgus monkey-associated and rhesus monkey-associated H. suis strains. The experimental host determines the outcome of the immune response against H. suis infection, rather than the original host.
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Affiliation(s)
- Iris Bosschem
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Bram Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Jaco Bakker
- Animal Science Department, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | - Edwin Heuvelman
- Animal Science Department, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | - Jan A M Langermans
- Animal Science Department, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | - Ellen De Bruyne
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Myrthe Joosten
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Annemieke Smet
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Davies MN, Pere H, Bosschem I, Haesebrouck F, Flahou B, Tartour E, Flower DR, Tough DF, Bayry J. In Silico Adjuvant Design and Validation. Methods Mol Biol 2017; 1494:107-125. [PMID: 27718189 DOI: 10.1007/978-1-4939-6445-1_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adjuvants are substances that boost the protective immune response to vaccine antigens. The majority of known adjuvants have been identified through the use of empirical approaches. Our aim was to identify novel adjuvants with well-defined cellular and molecular mechanisms by combining a knowledge of immunoregulatory mechanisms with an in silico approach. CD4+CD25+FoxP3+ regulatory T cells (Tregs) inhibit the protective immune responses to vaccines by suppressing the activation of antigen presenting cells such as dendritic cells (DCs). In this chapter, we describe the identification and functional validation of small molecule antagonists to CCR4, a chemokine receptor expressed on Tregs. The CCR4 binds the chemokines CCL22 and CCL17 that are produced in large amounts by activated innate cells including DCs. In silico identified small molecule CCR4 antagonists inhibited the migration of Tregs both in vitro and in vivo and when combined with vaccine antigens, significantly enhanced protective immune responses in experimental models.
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Affiliation(s)
- Matthew N Davies
- Translational Oncogenomics Laboratory, Centre for Evolution and Cancer, Division of Molecular Pathology, The Institute of Cancer Research, London, SM2 5NG, UK
| | - Helene Pere
- INSERM U970 PARCC (Paris Cardiovascular Research Center), Université Paris Descartes, Sorbonne Paris Cité, Paris, 75015, France
- Hôpital Européen Georges-Pompidou, Service d'Immunologie Biologique, AP-HP, Paris, 75015, France
| | - Iris Bosschem
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Bram Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Eric Tartour
- INSERM U970 PARCC (Paris Cardiovascular Research Center), Université Paris Descartes, Sorbonne Paris Cité, Paris, 75015, France
- Hôpital Européen Georges-Pompidou, Service d'Immunologie Biologique, AP-HP, Paris, 75015, France
| | - Darren R Flower
- School of Life and Health Sciences, University of Aston, Aston Triangle, Birmingham, B4 7ET, UK
| | - David F Tough
- Epinova Discovery Performance Unit, Immuno-inflammation Therapeutic Area, GlaxoSmithKline, Medicines Discovery Centre, SG1 2NY, Stevenage, UK
| | - Jagadeesh Bayry
- Institut National de la Santé et de la Recherche Médicale, Unité 1138, Paris, 75006, France.
- Equipe-Immunopathology and Therapeutic Immunointervention, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de Médicine, Paris, 75006, France.
- Sorbonne Universités, UPMC Universités Paris 06, UMR S 1138, Paris, 75006, France.
- Université Paris Descartes, Sorbonne Paris Cité, UMR S 1138, Paris, 75006, France.
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Puri A, Rai A, Dhanaraj PS, Lal R, Patel DD, Kaicker A, Verma M. An In Silico Approach for Identification of the Pathogenic Species, Helicobacter pylori and Its Relatives. Indian J Microbiol 2016; 56:277-86. [PMID: 27407291 PMCID: PMC4920758 DOI: 10.1007/s12088-016-0575-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 03/11/2016] [Indexed: 12/19/2022] Open
Abstract
Helicobacter is an economically important genus within the phylum Proteobacteria and include many species which cause many diseases in humans. With the conventional methods, it is difficult to identify them easily due to the high genetic similarity among its species. In the present study, 361 16S rRNA (rrs) gene sequences belonging to 45 species of genus Helicobacter were analyzed. Out of these, 264 sequences of 10 clinically relevant species (including Helicobacter pylori) were used. rrs gene sequences were analyzed to obtain a phylogenetic framework tree, in silico restriction enzyme analysis and species-specific conserved motifs. Protein sequences of another housekeeping gene, hsp60 were also subjected to phylogenetic analysis to supplement the data obtained using rrs sequences. Using these approaches, six out of ten species (including H. pylori) were easily segregated, whereas four species namely H. bilis, H. cinaedi, H. felis and Candidatus H. heilmannii were found to be heterogeneous. The above approaches have also helped in segregating unclassified sequences, thus proving them as an easy diagnostic method for identifying members of genus Helicobacter up to species level.
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Affiliation(s)
- Ayush Puri
- />Department of Zoology, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
| | - Arshiya Rai
- />Department of Zoology, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
| | - P. S. Dhanaraj
- />Department of Zoology, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
| | - Rup Lal
- />Molecular Biology Laboratory, Department of Zoology, University of Delhi, Delhi, 110 007 India
| | - Dev Dutt Patel
- />Department of Zoology, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
| | - Anju Kaicker
- />Department of Biochemistry, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
| | - Mansi Verma
- />Department of Zoology, Sri Venkateswara College, University of Delhi, South Campus, New Delhi, 110 021 India
- />Molecular Biology Laboratory, Department of Zoology, University of Delhi, Delhi, 110 007 India
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Esmail MY, Bacon R, Swennes AG, Feng Y, Shen Z, Garcia A, Sharma P, Cohen J, Fox JG. Helicobacter Species Identified in Captive Sooty Mangabeys (Cercocebus atys) with Metastatic Gastric Adenocarcinoma. Helicobacter 2016; 21:175-85. [PMID: 26477442 PMCID: PMC4837085 DOI: 10.1111/hel.12269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Of all human cancers, gastric carcinoma is the one of the leading causes of death. Helicobacter pylori is considered a major etiologic agent of this disease. Spontaneously occurring gastric carcinoma is a rare diagnosis in nonhuman primates. A 2011 case report documented a high incidence of gastric adenocarcinoma in a closed colony of captive sooty mangabeys (Cercebus atys). However, H. pylori infection was not detected in these animals. MATERIALS AND METHODS In this study, using archived formalin-fixed, paraffin-embedded stomach sections of these animals alternative methodologies were used to identify H. pylori and other non-H. pylori Helicobacter species. In addition, two additional cases of sooty mangabeys with metastatic gastric carcinoma are characterized. RESULTS Using fluorescent in situ hybridization, we identified gastric H. suis in 75% of archived and new gastric carcinoma cases. In the two newly reported cases, H. suis and a novel Helicobacter species were detected via PCR and sequence analysis of the 16S rRNA gene. H. pylori was not identified in any of the gastric carcinoma cases via FISH and/or PCR and sequence analysis of Helicobacter spp. in DNA from of available tissues. CONCLUSIONS This report is the first to characterize Helicobacter species infection in spontaneous gastric carcinoma with metastatic potential in nonhuman primates.
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Affiliation(s)
- Michael Y. Esmail
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Alton G. Swennes
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - AnaPatricia Garcia
- Division of Pathology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Prachi Sharma
- Division of Pathology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Joyce Cohen
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA
| | - James G. Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
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Hernández C, Serrano CA, Villagrán A, Torres J, Venegas A, Harris PR. Helicobacter pylori vacA virulence factor in uncultured Helicobacter heilmannii sensu lato from an infected child. JMM Case Rep 2016. [DOI: 10.1099/jmmcr.0.005026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Caroll Hernández
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina A. Serrano
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrea Villagrán
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javiera Torres
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandro Venegas
- Faculty of Medicine, Centro de Investigación Biomédica, Universidad Diego Portales, Santiago, Chile
| | - Paul R. Harris
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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Divergence between the Highly Virulent Zoonotic Pathogen Helicobacter heilmannii and Its Closest Relative, the Low-Virulence "Helicobacter ailurogastricus" sp. nov. Infect Immun 2015; 84:293-306. [PMID: 26527212 DOI: 10.1128/iai.01300-15] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 10/26/2015] [Indexed: 12/21/2022] Open
Abstract
Helicobacter heilmannii naturally colonizes the stomachs of dogs and cats and has been associated with gastric disorders in humans. Nine feline Helicobacter strains, classified as H. heilmannii based on ureAB and 16S rRNA gene sequences, were divided into a highly virulent and a low-virulence group. The genomes of these strains were sequenced to investigate their phylogenetic relationships, to define their gene content and diversity, and to determine if the differences in pathogenicity were associated with the presence or absence of potential virulence genes. The capacities of these helicobacters to bind to the gastric mucosa were investigated as well. Our analyses revealed that the low-virulence strains do not belong to the species H. heilmannii but to a novel, closely related species for which we propose the name Helicobacter ailurogastricus. Several homologs of H. pylori virulence factors, such as IceA1, HrgA, and jhp0562-like glycosyltransferase, are present in H. heilmannii but absent in H. ailurogastricus. Both species contain a VacA-like autotransporter, for which the passenger domain is remarkably larger in H. ailurogastricus than in H. heilmannii. In addition, H. ailurogastricus shows clear differences in binding to the gastric mucosa compared to H. heilmannii. These findings highlight the low-virulence character of this novel Helicobacter species.
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Pozdeev OK, Pozdeeva AO, Pozdnyak AO, Saifutdinov RG. [Role of animal gastric Helicobacter species in human gastric pathology]. TERAPEVT ARKH 2015; 87:122-126. [PMID: 26155631 DOI: 10.17116/terarkh2015875122-126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Animal Helicobacter species other than Helicobacter pylori are also able to cause human gastritis, gastric ulcers, and MALT lymphomas. Animal Helicobacter species are presented with typical spiral fastidious microorganisms colonizing the gastric mucosa of different animals. Bacteria initially received their provisional name Helicobacter heilmannii, and out of them at least five species colonizing the gastric mucosa of pigs, cats, and dogs were isolated later on. A high proportion of these diseases are shown to be zoonotic. Transmission of pathogens occurs by contact. The factors of bacterial pathogenicity remain little studied.
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Affiliation(s)
- O K Pozdeev
- Kazan State Medical Academy, Ministry of Health of Russia, Kazan, Russia; Kazan State Medical University, Ministry of Health of Russia, Kazan, Russia
| | - A O Pozdeeva
- Kazan State Medical Academy, Ministry of Health of Russia, Kazan, Russia
| | - A O Pozdnyak
- Kazan State Medical Academy, Ministry of Health of Russia, Kazan, Russia
| | - R G Saifutdinov
- Kazan State Medical Academy, Ministry of Health of Russia, Kazan, Russia
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Effect of Different Adjuvants on Protection and Side-Effects Induced by Helicobacter suis Whole-Cell Lysate Vaccination. PLoS One 2015; 10:e0131364. [PMID: 26115373 PMCID: PMC4482594 DOI: 10.1371/journal.pone.0131364] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 06/01/2015] [Indexed: 02/07/2023] Open
Abstract
Helicobacter suis (H. suis) is a widespread porcine gastric pathogen, which is also of zoonotic importance. The first goal of this study was to investigate the efficacy of several vaccine adjuvants (CpG-DNA, Curdlan, Freund's Complete and Incomplete, Cholera toxin), administered either subcutaneously or intranasally along with H. suis whole-cell lysate, to protect against subsequent H. suis challenge in a BALB/c infection model. Subcutaneous immunization with Freund's complete (FC)/lysate and intranasal immunization with Cholera toxin (CT)/lysate were shown to be the best options for vaccination against H. suis, as determined by the amount of colonizing H. suis bacteria in the stomach, although adverse effects such as post-immunization gastritis/pseudo-pyloric metaplasia and increased mortality were observed, respectively. Therefore, we decided to test alternative strategies, including sublingual vaccine administration, to reduce the unwanted side-effects. A CCR4 antagonist that transiently inhibits the migration of regulatory T cells was also included as a new adjuvant in this second study. Results confirmed that immunization with CT (intranasally or sublingually) is among the most effective vaccination protocols, but increased mortality was still observed. In the groups immunized subcutaneously with FC/lysate and CCR4 antagonist/lysate, a significant protection was observed. Compared to the FC/lysate immunized group, gastric pseudo-pyloric metaplasia was less severe or even absent in the CCR4 antagonist/lysate immunized group. In general, an inverse correlation was observed between IFN-γ, IL-4, IL-17, KC, MIP-2 and LIX mRNA expression and H. suis colonization density, whereas lower IL-10 expression levels were observed in partially protected animals.
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Goji S, Tamura Y, Sasaki M, Nakamura M, Matsui H, Murayama SY, Ebi M, Ogasawara N, Funaki Y, Kasugai K. Helicobacter suis-Infected Nodular Gastritis and a Review of Diagnostic Sensitivity for Helicobacter heilmannii-Like Organisms. Case Rep Gastroenterol 2015; 9:179-87. [PMID: 26120299 PMCID: PMC4478311 DOI: 10.1159/000431169] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Helicobacter heilmannii-like organisms (HHLOs) are associated with mucosa-associated lymphoid tissue lymphoma and peptic ulcer. However, the sensitivity of diagnostic tests for HHLOs, such as rapid urease test (RUT), urea breath test (UBT) and blood antibody, is not high. Tightly coiled spiral microorganisms were found in the gastric mucosal biopsy specimen of a 48-year-old asymptomatic woman. Her findings were positive for RUT and UBT, but negative for blood antibody and stool antigen against H. pylori. A 7-day course of esomeprazole, amoxicillin and clarithromycin was administered, resulting in the successful eradication of the HHLOs. Analysis of the 16S rRNA and urease genes suggested a diagnosis of the HHLO H. suis. The sensitivity results of RUT, UBT, culture, blood antibody, immunohistochemistry and stool antigen were 40.0, 14.8, 0, 23.1, 40.0 and 0%, respectively. We report asymptomatic nodular gastritis due to an HHLO. Histological techniques, most likely with smears, are expected to be the most effective method for diagnosing infections by HHLOs, and genetic diagnosis by polymerase chain reaction can be very useful to identify the species of HHLOs.
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Affiliation(s)
- Shigeki Goji
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Yasuhiro Tamura
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Makoto Sasaki
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | | | - Hidenori Matsui
- Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Somay Yamagata Murayama
- Laboratory of Molecular Cell Biology, School of Pharmacy, Nihon University, Funabashi, Japan
| | - Masahide Ebi
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Naotaka Ogasawara
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Yasushi Funaki
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Kunio Kasugai
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
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Amorim I, Smet A, Alves O, Teixeira S, Saraiva AL, Taulescu M, Reis C, Haesebrouck F, Gärtner F. Presence and significance of Helicobacter spp. in the gastric mucosa of Portuguese dogs. Gut Pathog 2015; 7:12. [PMID: 25897328 PMCID: PMC4404211 DOI: 10.1186/s13099-015-0057-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/19/2015] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Non-Helicobacter pylori Helicobacters (NHPH) are also able to cause disease in humans. Dogs are a natural reservoir for many of these species. Close and intense human contact with animals has been identified as a risk factor and therefore, an important zoonotic significance has been attributed to NHPH. METHODS To determine the prevalence of Helicobacter species and the gastric histopathological changes associated, gastric mucosa samples of 69 dogs were evaluated. RESULTS Only one dog presented a normal histopathological mucosa with absence of spiral-shaped organisms. A normal gastric mucosa and the presence of spiral-shaped bacteria was observed in two dogs. All remaining animals presented histopathological changes representative of gastritis. Helicobacter species were detected in 60 dogs (87.0%) by at least one detection method. Histological, histochemical and immunohistochemical evaluations revealed that Helicobacter spp. were present in 45 (65.2%), 52 (75.4%) and 57 (82.6%) dogs, respectively. Spiral-shaped bacteria were detected by qPCR analysis in 33 (47.8%) dogs. H. heilmannii-like organisms were identified in 22 animals (66.7%) and predominantly in the antral gastric region. H. salomonis was the second most prevalent species (51.5%) although it was mainly found in association with other Helicobacter spp. and in the body gastric region. H. bizzozeronii and H. felis were less frequently detected. CONCLUSIONS It was concluded that, despite the high incidence and worldwide distribution of gastric NHPH in dogs, the presence of specific Helicobacter species may vary between geographic regions. NHPH infections were significantly accompanied by mild to moderate intraepithelial lymphocyte infiltration and mild to moderate gastric epithelial injury, but a clear relationship between gastritis and Helicobacter infection could not be established.
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Affiliation(s)
- Irina Amorim
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal ; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal ; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal
| | - Annemieke Smet
- Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, B-9820 Belgium
| | - Odete Alves
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal
| | - Silvia Teixeira
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal
| | - Ana Laura Saraiva
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal ; CECAV, Centro de Ciência Animal e Veterinária, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Marian Taulescu
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Celso Reis
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal ; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal ; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal ; Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Freddy Haesebrouck
- Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, B-9820 Belgium
| | - Fátima Gärtner
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal ; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal ; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313 Porto, Portugal
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Hu S, Jin D, Lu S, Liu S, Zhang J, Wang Y, Bai X, Xiong Y, Huang Y, Xu H, Wang Y, Du X, Ye C, Hänninen ML, Xu J. Helicobacter himalayensis sp. nov. isolated from gastric mucosa of Marmota himalayana. Int J Syst Evol Microbiol 2015; 65:1719-1725. [PMID: 25736414 DOI: 10.1099/ijs.0.000163] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A Gram-stain-negative, microaerophilic strain, 80(YS1)T, with a spiral-shaped morphology and 1-2 sheathed flagella at each end of the cells was isolated from the gastric mucosa of Marmota himalayana, the animal reservoir of Yersinia pestis in China, on the Qinghai-Tibet Plateau. The strain grew at 30, 35 and 42 °C, but not at 25 °C. Growth was in the form of a thinly spreading film on brain heart infusion agar containing 8 % sheep blood under microaerobic conditions. The strain did not hydrolyse urea or hippurate, and did not grow on media containing 1 % glycine. It reduced nitrate to nitrite, and was catalase- and alkaline-phosphatase-positive, susceptible to nalidixic acid and resistant to cefalotin. It was positive for genus-specific PCR for the genus Helicobacter, but could not be classified to any recognized species according biochemical tests results. Therefore, a phylogenetic study based on 16S rRNA, 23S rRNA, 60 kDa heat-shock protein (hsp60) and gyrase subunit B (gyrB) genes was conducted. The 16S rRNA gene sequence (1468 bp) analysis showed that strain 80(YS1)T was most closely related to Helicobacter marmotae (96.7 % similarity). The 23S rRNA gene sequence (2879 bp) analysis showed that the strain was most closely related to Helicobacter canis (96 % similarity). The complete gyrB gene sequence (2325 bp) analysis showed that it was related phylogenetically to Helicobacter cinaedi (79.4 % similarity) and H. marmotae (79.1 % similarity). Analysis of the partial sequence of the hsp60 gene of strain 80(YS1)T showed closest similarity to the sequences of Helicobacter equorum (82 %) and H. cinaedi (81 %), respectively. However, there was no hsp60 sequence of H. marmotae available for analysis. The data of morphological, biochemical and phylogenetic characteristics all supported that this strain represents a novel species. The name Helicobacter himalayensis sp. nov. is proposed for this novel species with the type strain 80(YS1)T ( = CGMCC 1.12864T = DSM 28742T).
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Affiliation(s)
- Shoukui Hu
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Dong Jin
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Shan Lu
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Sha Liu
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Ji Zhang
- Department of Food Hygiene and Environmental Health, Helsinki University, Finland
| | - Yiting Wang
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Xiangning Bai
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Yanwen Xiong
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Ying Huang
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Huaqing Xu
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Yi Wang
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Xiaoli Du
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Changyun Ye
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
| | - Marja-Liisa Hänninen
- Department of Food Hygiene and Environmental Health, Helsinki University, Finland
| | - Jianguo Xu
- State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, China CDC, Beijing, PR China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, PR China
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Interferon-γ-producing B cells induce the formation of gastric lymphoid follicles after Helicobacter suis infection. Mucosal Immunol 2015; 8:279-95. [PMID: 25073677 DOI: 10.1038/mi.2014.66] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 06/16/2014] [Indexed: 02/04/2023]
Abstract
Helicobacter (H.) suis is capable of infecting various animals including humans, and H. suis infections can lead to gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Recently, we reported that interferon-γ (IFN-γ) was highly expressed in the stomachs of H. suis-infected mice, but the direct relationship between the upregulation of IFN-γ expression and the formation of gastric lymphoid follicles after H. suis infection remains unclear. Here, we demonstrated that the IFN-γ produced by B cells plays an important role in the formation of gastric lymphoid follicles after H. suis infection. In addition, IFN-γ-producing B cells evoked gastric lymphoid follicle formation independent of T-cell help, suggesting that they are crucial for the development of gastric MALT induced by Helicobacter infection.
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Bento-Miranda M, Figueiredo C. Helicobacter heilmannii sensu lato: An overview of the infection in humans. World J Gastroenterol 2014; 20:17779-17787. [PMID: 25548476 PMCID: PMC4273128 DOI: 10.3748/wjg.v20.i47.17779] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 06/27/2014] [Accepted: 07/30/2014] [Indexed: 02/06/2023] Open
Abstract
Helicobacter heilmannii sensu lato (H. heilmannii s.l.) is a group of gastric non-Helicobacter pylori Helicobacter species that are morphologically indistinguishable from each other. H. heilmannii s.l. infect the stomach of several animals and may have zoonotic potential. Although the prevalence of these infections in humans is low, they are associated with gastric pathology, including mucosa-associated lymphoid tissue lymphoma, making them a significant health issue. Here, the taxonomy, epidemiology, microbiology, diagnosis, and treatment of these infections will be reviewed. The gastric pathology associated with H. heilmannii s.l. infections in humans will also be addressed. Finally, the features of the complete bacterial genomes available and studies on species-specific pathogenesis will be reviewed. The understanding of the mechanisms that underlie gastric disease development mediated by the different bacterial species that constitute H. heilmannii s.l. is essential for developing strategies for prevention and treatment of these infections.
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Canejo-Teixeira R, Oliveira M, Pissarra H, Niza MMMEE, Vilela CL. A mixed population of Helicobacter pylori, Helicobacter bizzozeronii and "Helicobacter heilmannii" in the gastric mucosa of a domestic cat. Ir Vet J 2014; 67:25. [PMID: 25905013 PMCID: PMC4405862 DOI: 10.1186/2046-0481-67-25] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 10/01/2014] [Indexed: 12/15/2022] Open
Abstract
Background The presence of Helicobacter within the gastric mucosa is responsible for producing pathology in many animal species, including man. Since humans have been shown to harbour many of the same bacterial species as domestic carnivores, concern over their zoonotic potential has been growing. Helicobacter pylori, a class 1 carcinogen responsible for cases of gastritis and gastric cancer in humans, produces similar pathology in pet carnivores and is considered an example of anthroponosis. The case here presented refers to a 13 year-old mixed breed spayed female cat seen at necropsy. Findings Stomach samples were analysed for the presence of Helicobacter spp. by cytology, histopathology and PCR. Mild mucosal atrophy was observed in the fundus and antrum, while lymphoplasmocytic infiltrates where noted in the lamina propria of the antrum. Helicobacter-like organisms were observed in the corpus and antrum, occupying gastric glands and surface mucosa. It was possible to detect Helicobacter spp., H. pylori, H. heilmannii and H. bizzozeronii in the fundus, corpus and antrum by PCR, while in the antrum PCR samples were positive for H. pylori. Conclusions The spayed female under study could represent either a yet un-described population of domestic cats infected with H. pylori or a case of anthroponosis.
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Affiliation(s)
- Rute Canejo-Teixeira
- Faculdade de Medicina Veterinária, Universidade de Lisboa, CIISA, Avenida da Universidade Técnica, Lisboa, 1300-477 Portugal
| | - Manuela Oliveira
- Faculdade de Medicina Veterinária, Universidade de Lisboa, CIISA, Avenida da Universidade Técnica, Lisboa, 1300-477 Portugal
| | - Hugo Pissarra
- Faculdade de Medicina Veterinária, Universidade de Lisboa, CIISA, Avenida da Universidade Técnica, Lisboa, 1300-477 Portugal
| | - Maria Manuela Manuela E E Niza
- Faculdade de Medicina Veterinária, Universidade de Lisboa, CIISA, Avenida da Universidade Técnica, Lisboa, 1300-477 Portugal
| | - Christina L Vilela
- Faculdade de Medicina Veterinária, Universidade de Lisboa, CIISA, Avenida da Universidade Técnica, Lisboa, 1300-477 Portugal
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41
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Flahou B, Modrý D, Pomajbíková K, Petrželková KJ, Smet A, Ducatelle R, Pasmans F, Sá RM, Todd A, Hashimoto C, Mulama M, Kiang J, Rossi M, Haesebrouck F. Diversity of zoonotic enterohepatic Helicobacter species and detection of a putative novel gastric Helicobacter species in wild and wild-born captive chimpanzees and western lowland gorillas. Vet Microbiol 2014; 174:186-94. [PMID: 25248691 DOI: 10.1016/j.vetmic.2014.08.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 08/26/2014] [Accepted: 08/30/2014] [Indexed: 02/01/2023]
Abstract
A number of Helicobacter species cause gastrointestinal or hepatic disease in humans, including H. pylori, gastric non-H. pylori helicobacters from animal origin and enterohepatic Helicobacter species. Little is known on the presence of Helicobacter species in great apes, our closest living relatives and potential reservoirs of microorganisms that might emerge in humans. The aim of the present study was to investigate the presence of gastric and enterohepatic Helicobacter species in African chimpanzees and gorillas. Fresh fecal samples were collected from wild endangered chimpanzees and critically endangered western lowland gorillas from different African National Parks, as well as wild-born captive animals from primate sanctuaries. Intact Helicobacter bacteria were demonstrated in feces by fluorescence in situ hybridization. Screening using a Helicobacter genus-specific PCR revealed the presence of Helicobacter DNA in the majority of animals in all groups. Cloning and sequencing of 16S rRNA gene fragments revealed a high homology to sequences from various zoonotic enterohepatic Helicobacter species, including H. cinaedi and H. canadensis. A number of gorillas and chimpanzees also tested positive using PCR assays designed to amplify part of the ureAB gene cluster and the hsp60 gene of gastric helicobacters. Phylogenetic analysis revealed the presence of a putative novel zoonotic gastric Helicobacter taxon/species. For this species, we propose the name 'Candidatus Helicobacter homininae', pending isolation and further genetic characterization. The presence of several Helicobacter species not only implies a possible health threat for these endangered great apes, but also a possible zoonotic transmission of gastric and enterohepatic helicobacters from these primate reservoirs to humans.
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Affiliation(s)
- Bram Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
| | - David Modrý
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic; CEITEC, Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences, Hudcova 70, 621 00 Brno, Czech Republic
| | - Kateřina Pomajbíková
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic
| | - Klára J Petrželková
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic; Department of Mammal Ecology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic; Liberec ZOO, Masarykova 1347/31, 460 01 Liberec, Czech Republic
| | - Annemieke Smet
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Frank Pasmans
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Rui M Sá
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Centre for Research in Anthropology, ISCTE-Instituto Universitário de Lisboa, Av. Forças Armadas, 1649-026 Lisboa, Portugal
| | - Angelique Todd
- WWF, Dzanga Sangha Protected Areas, Bangui, Central African Republic
| | - Chie Hashimoto
- Primate Research Institute, Kyoto University, Kanrin, Inuyama, Aichi 484-8506, Japan
| | - Martin Mulama
- Sweetwaters Chimpanzee Sanctuary, Ol Pejeta Conservancy, 10400 Nanyuki, Kenya
| | | | - Mirko Rossi
- Department of Food Health and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, PO Box 66 (Agnes Sjöberginkatu 2), FI-00014 Helsinki, Finland
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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Matsui H, Takahashi T, Murayama SY, Uchiyama I, Yamaguchi K, Shigenobu S, Matsumoto T, Kawakubo M, Horiuchi K, Ota H, Osaki T, Kamiya S, Smet A, Flahou B, Ducatelle R, Haesebrouck F, Takahashi S, Nakamura S, Nakamura M. Development of new PCR primers by comparative genomics for the detection of Helicobacter suis in gastric biopsy specimens. Helicobacter 2014; 19:260-71. [PMID: 24673878 DOI: 10.1111/hel.12127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Although the infection rate of Helicobacter suis is significantly lower than that of Helicobacter pylori, the H. suis infection is associated with a high rate of gastric mucosa-associated lymphoid tissue (MALT) lymphoma. In addition, in vitro cultivation of H. suis remains difficult, and some H. suis-infected patients show negative results on the urea breath test (UBT). MATERIALS AND METHODS Female C57BL/6J mice were orally inoculated with mouse gastric mucosal homogenates containing H. suis strains TKY or SNTW101 isolated from a cynomolgus monkey or a patient suffering from nodular gastritis, respectively. The high-purity chromosomal DNA samples of H. suis strains TKY and SNTW101 were prepared from the infected mouse gastric mucosa. The SOLiD sequencing of two H. suis genomes enabled comparative genomics of 20 Helicobacter and 11 Campylobacter strains for the identification of the H. suis-specific nucleotide sequences. RESULTS Oral inoculation with mouse gastric mucosal homogenates containing H. suis strains TKY and SNTW101 induced gastric MALT lymphoma and the formation of gastric lymphoid follicles, respectively, in C57BL/6J mice. Two conserved nucleotide sequences among six H. suis strains were identified and were used to design diagnostic PCR primers for the detection of H. suis. CONCLUSIONS There was a strong association between the H. suis infection and gastric diseases in the C57BL/6 mouse model. PCR diagnosis using an H. suis-specific primer pair is a valuable method for detecting H. suis in gastric biopsy specimens.
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Affiliation(s)
- Hidenori Matsui
- Kitasato Institute for Life Sciences and Graduate School of Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
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Collado L, Jara R, González S. Description of Helicobacter valdiviensis sp. nov., an Epsilonproteobacteria isolated from wild bird faecal samples. Int J Syst Evol Microbiol 2014; 64:1913-1919. [DOI: 10.1099/ijs.0.057141-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Two Gram-stain-negative, gently curved rod-shaped isolates (WBE14T and WBE19), recovered from wild bird faecal samples in the city of Valdivia (Southern Chile) were subjected to a polyphasic taxonomic study. Results of a genus-specific PCR indicated that these isolates belonged to the genus
Helicobacter
. This was further confirmed by a phylogenetic analyses based on the 16S rRNA, 60 kDa heat-shock protein (cpn60) and gyrase subunit B (gyrB) genes, where both strains formed a novel phylogenetic line within this genus. The 16S rRNA gene sequence similarity of strain WBE14T to the type strains of all other species of the genus
Helicobacter
examined ranged from 89.4 to 97.0 %;
Helicobacter brantae
and
Helicobacter pametensis
were the most closely related species. However, on the basis of the protein-coding genes
Helicobacter pullorum
and
Helicobacter canadensis
are the most closely related species. These data, together with their different morphological and biochemical characteristics, revealed that these strains represent a novel species, for which the name Helicobacter valdiviensis sp. nov. is proposed, with the type strain WBE14T ( = CECT 8410T = LMG 27920T).
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Affiliation(s)
- Luis Collado
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Ronald Jara
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Susana González
- Medical Technology School, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile
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Gastric de novo Muc13 expression and spasmolytic polypeptide-expressing metaplasia during Helicobacter heilmannii infection. Infect Immun 2014; 82:3227-39. [PMID: 24866791 DOI: 10.1128/iai.01867-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Helicobacter heilmannii is a zoonotic bacterium that has been associated with gastric disease in humans. In this study, the mRNA expression of mucins in the stomach of BALB/c mice was analyzed at several time points during a 1-year infection with this bacterium, during which gastric disease progressed in severity. Markers for acid production by parietal cells and mucous metaplasia were also examined. In the first 9 weeks postinfection, the mRNA expression of Muc6 was clearly upregulated in both the antrum and fundus of the stomach of H. heilmannii-infected mice. Interestingly, Muc13 was upregulated already at 1 day postinfection in the fundus of the stomach. Its expression level remained high in the stomach over the course of the infection. This mucin is, however, not expressed in a healthy stomach, and high expression of this mucin has so far only been described in gastric cancer. In the later stages of infection, mRNA expression of H(+)/K(+)-ATPase α/β and KCNQ1 decreased, whereas the expression of Muc4, Tff2, Dmbt1, and polymeric immunoglobulin receptor (pIgR) increased starting at 16 weeks postinfection onwards, suggesting the existence of spasmolytic polypeptide-expressing metaplasia in the fundus of the stomach. Mucous metaplasia present in the mucosa surrounding low-grade mucosa-associated lymphoid tissue (MALT) lymphoma-like lesions was also histologically confirmed. Our findings indicate that H. heilmannii infection causes severe gastric pathologies and alterations in the expression pattern of gastric mucins, such as Muc6 and Muc13, as well as disrupting gastric homeostasis by inducing the loss of parietal cells, resulting in the development of mucous metaplasia.
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45
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Jiang Q, Huang YQ, Huang ZS. Relationship between Helicobacter hepaticus infection and hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2014; 22:1959-1965. [DOI: 10.11569/wcjd.v22.i14.1959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) has a high incidence worldwide, with a low diagnostic rate in the early period and therefore a high death rate. Causes for some cases of liver cancer are not completely clear. The finding that the rate of liver cancer in male A/Jr mice is significantly higher makes researchers realize that Helicobacter hepaticus may cause HCC in human beings. To get a new perspective for exploring causes of liver cancer, this paper introduces the biological nature of and detecting methods for Helicobacter hepaticus, as well as the relationship between Helicobacter hepaticus infection and HCC. Helicobacter hepaticus infection may play an important role in some HCC cases.
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46
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Matsumoto T, Kawakubo M, Akamatsu T, Koide N, Ogiwara N, Kubota S, Sugano M, Kawakami Y, Katsuyama T, Ota H. Helicobacter heilmannii sensu stricto-related gastric ulcers: A case report. World J Gastroenterol 2014; 20:3376-3382. [PMID: 24695914 PMCID: PMC3964410 DOI: 10.3748/wjg.v20.i12.3376] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 01/07/2014] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
A spiral bacterium (SH9), morphologically different from Helicobacter pylori (H. pylori), was found in a 62-year-old woman’s gastric mucosa. Gastroscopic examination revealed multiple gastric ulcers near the pyloric ring; mapping gastric biopsy showed mild mononuclear infiltration with large lymphoid follicles in the antrum, without corpus atrophy. Urea breath test and H. pylori culture were negative, but Giemsa staining of biopsies revealed tightly coiled bacteria that immunostained with anti-H. pylori antibody. Sequencing of SH9 16S rRNA and the partial urease A and B subunit genes showed that the former sequence had highest similarity (99%; 1302/1315 bp) to Helicobacter heilmannii (H. heilmannii) sensu stricto (H. heilmannii s.s.) BC1 obtained from a bobcat, while the latter sequence confirmed highest similarity (98.3%; 1467/1493 bp) to H. heilmannii s.s. HU2 obtained from a human. The patient was diagnosed with multiple gastric ulcers associated with H. heilmannii s.s. infection. After triple therapy (amoxicillin, clarithromycin, and lansoprazole) with regimen for eradicating H. pylori, gastroscopy showed ulcer improvement and no H. heilmannii s.s. upon biopsy.
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47
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Yadegar A, Alebouyeh M, Lawson AJ, Mirzaei T, Nazemalhosseini Mojarad E, Zali MR. Differentiation of non-pylori Helicobacter species based on PCR-restriction fragment length polymorphism of the 23S rRNA gene. World J Microbiol Biotechnol 2014; 30:1909-17. [PMID: 24493015 DOI: 10.1007/s11274-014-1615-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 01/27/2014] [Indexed: 01/21/2023]
Abstract
Phenotypic identification of non-pylori Helicobacter species has always been problematic and time-consuming in comparison with many other bacteria. We developed a rapid two-step identification assay based on PCR-restriction fragment length polymorphism (PCR-RFLP) analysis of the 23S rRNA gene for differentiating between non-pylori Helicobacter species. A new genus-specific primer pair based on all available complete and partial 23S rRNA sequences of Helicobacter species was designed. In silico restriction analysis of variable regions of the 23S rRNA gene suggested SmaI and HindIII endonucleases would provide a good level of differentiation. Analysis of the obtained 23S rRNA RFLP patterns divided all Helicobacter study strains into three species groups (groups A-C) and 12 unique restriction patterns. Wolinella succinogenes also gave a unique pattern. Our proposed PCR-RFLP method was found to be as a valuable tool for routine identification of non-pylori Helicobacter species from human or animal samples.
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Affiliation(s)
- Abbas Yadegar
- Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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48
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Blaecher C, Smet A, Flahou B, Pasmans F, Ducatelle R, Taylor D, Weller C, Bjarnason I, Charlett A, Lawson AJ, Dobbs RJ, Dobbs SM, Haesebrouck F. Significantly higher frequency of Helicobacter suis in patients with idiopathic parkinsonism than in control patients. Aliment Pharmacol Ther 2013; 38:1347-53. [PMID: 24117797 PMCID: PMC4065369 DOI: 10.1111/apt.12520] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 08/20/2013] [Accepted: 09/16/2013] [Indexed: 12/14/2022]
Abstract
BACKGROUND There is increased proportional mortality from Parkinson's disease amongst livestock farmers. The hypokinesia of Parkinson's disease has been linked to Helicobacter pylori. H. suis is the most common zoonotic helicobacter in man. AIM To compare the frequency of H. suis, relative to H. pylori, in gastric biopsies of patients with idiopathic parkinsonism (IP) and controls from gastroenterology services. METHODS DNA extracts, archived at a Helicobacter Reference Laboratory, from IP patient and gastroenterology service biopsies were examined anonymously for H. suis, using species-specific RT-PCR. RESULTS Relative risk of having H. suis in 60 IP patients compared with 256 controls was 10 times greater than that of having H. pylori. In patients with IP and controls, respectively, frequencies of H. suis were 27 (exact binomial 95% C.I. 15, 38) and 2 (0, 3)%, and of H. pylori, 28 (17, 40) and 16 (12, 21)%. Excess of H. suis in IP held when only the antral or corporal biopsy was considered. Of 16 IP patients with H. suis, 11 were from 19 with proven H. pylori eradication, 3 from 17 pre-H. pylori eradication, 2 from 24 H. pylori culture/PCR-negative. Frequency was different between groups (P = 0.001), greatest where H. pylori had been eradicated. Even without known exposure to anti-H. pylori therapy, H. suis was more frequent in IP patients (5/41) than in controls (1/155) (P = 0.002). Partial multilocus sequence typing confirmed that strains from IP patients (6) and control (1) differed from RT-PCR standard strain. CONCLUSIONS Greater frequency of H. suis in idiopathic parkinsonism appears exaggerated following H. pylori eradication. Multilocus sequence testing comparison with porcine strains may clarify whether transmission is from pigs/porcine products or of human-adapted, H. suis-like, bacteria.
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Affiliation(s)
- C Blaecher
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium,Institute of Pharmaceutical Science, King's College LondonLondon, UK
| | - A Smet
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium
| | - B Flahou
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium
| | - F Pasmans
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium
| | - R Ducatelle
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium
| | - D Taylor
- Institute of Pharmaceutical Science, King's College LondonLondon, UK,The Maudsley HospitalLondon, UK
| | - C Weller
- Institute of Pharmaceutical Science, King's College LondonLondon, UK
| | - I Bjarnason
- Department of Gastroenterology, King's College HospitalLondon, UK
| | - A Charlett
- Statistics Modelling and Economics Department of Centre for Infectious Disease Surveillance and Control, Public Health EnglandLondon, UK
| | - A J Lawson
- Gastrointestinal Bacteriology Reference Unit, Public Health EnglandLondon, UK
| | - R J Dobbs
- Institute of Pharmaceutical Science, King's College LondonLondon, UK,The Maudsley HospitalLondon, UK,Department of Gastroenterology, King's College HospitalLondon, UK
| | - S M Dobbs
- Institute of Pharmaceutical Science, King's College LondonLondon, UK,The Maudsley HospitalLondon, UK,Department of Gastroenterology, King's College HospitalLondon, UK
| | - F Haesebrouck
- Faculty of Veterinary Medicine, Ghent UniversityMerelbeke, Belgium
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49
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Martin ME, Bhatnagar S, George MD, Paster BJ, Canfield DR, Eisen JA, Solnick JV. The impact of Helicobacter pylori infection on the gastric microbiota of the rhesus macaque. PLoS One 2013; 8:e76375. [PMID: 24116104 PMCID: PMC3792980 DOI: 10.1371/journal.pone.0076375] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 08/27/2013] [Indexed: 12/30/2022] Open
Abstract
Helicobacter pylori colonization is highly prevalent among humans and causes significant gastric disease in a subset of those infected. When present, this bacterium dominates the gastric microbiota of humans and induces antimicrobial responses in the host. Since the microbial context of H. pylori colonization influences the disease outcome in a mouse model, we sought to assess the impact of H. pylori challenge upon the pre-existing gastric microbial community members in the rhesus macaque model. Deep sequencing of the bacterial 16S rRNA gene identified a community profile of 221 phylotypes that was distinct from that of the rhesus macaque distal gut and mouth, although there were taxa in common. High proportions of both H. pylori and H. suis were observed in the post-challenge libraries, but at a given time, only one Helicobacter species was dominant. However, the relative abundance of non-Helicobacter taxa was not significantly different before and after challenge with H. pylori. These results suggest that while different gastric species may show competitive exclusion in the gastric niche, the rhesus gastric microbial community is largely stable despite immune and physiological changes due to H. pylori infection.
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Affiliation(s)
- Miriam E. Martin
- Department of Medicine, University of California Davis, Davis, California, United States of America
- Department of Microbiology and Immunology, University of California Davis, Davis, California, United States of America
| | - Srijak Bhatnagar
- Department of Microbiology and Immunology, University of California Davis, Davis, California, United States of America
- Department of Evolution and Ecology, University of California Davis, Davis, California, United States of America
- Microbiology Graduate Group, University of California Davis, Davis, California, United States of America
| | - Michael D. George
- Department of Microbiology and Immunology, University of California Davis, Davis, California, United States of America
| | - Bruce J. Paster
- Forsyth Institute, Cambridge, Massachusetts, United States of America
| | - Don R. Canfield
- California National Primate Research Center, University of California Davis, Davis, California, United States of America
| | - Jonathan A. Eisen
- Department of Microbiology and Immunology, University of California Davis, Davis, California, United States of America
- Department of Evolution and Ecology, University of California Davis, Davis, California, United States of America
| | - Jay V. Solnick
- Department of Medicine, University of California Davis, Davis, California, United States of America
- Department of Microbiology and Immunology, University of California Davis, Davis, California, United States of America
- California National Primate Research Center, University of California Davis, Davis, California, United States of America
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Joosten M, Flahou B, Meyns T, Smet A, Arts J, De Cooman L, Pasmans F, Ducatelle R, Haesebrouck F. Case report: Helicobacter suis infection in a pig veterinarian. Helicobacter 2013; 18:392-6. [PMID: 23551953 DOI: 10.1111/hel.12054] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This study describes a non-Helicobacter (H.) pylori Helicobacter (NHPH) infection in a pig veterinarian. The patient suffered from reflux esophagitis and general dyspeptic symptoms and was referred to the hospital for upper gastrointestinal endoscopy. Histologic examination of corpus and antrum biopsies revealed a chronic gastritis. Large spiral-shaped non-H. pylori helicobacters could be visualized and were identified as H. suis by PCR. The patient was treated with a triple therapy, consisting of amoxicillin, clarithromycin, and pantoprazole for 10 days. Successful eradication was confirmed after a follow-up gastrointestinal endoscopy and PCR 10 weeks after treatment. A mild chronic gastritis was, however, still observed at this point in time. This case report associates porcine H. suis strains with gastric disease in humans, thus emphasizing the zoonotic importance of H. suis bacteria from pigs.
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Affiliation(s)
- Myrthe Joosten
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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