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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: 11] [Impact Index Per Article: 5.5] [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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Biénès T, Leal RO, Domínguez-Ruiz M, De Carvalho RE, Rodrigues NF, Dally C, Husson JC, Le Boedec K, Hernandez J. Association of gastric lymphofollicular hyperplasia with Helicobacter-like organisms in dogs. J Vet Intern Med 2022; 36:515-524. [PMID: 35194849 PMCID: PMC8965270 DOI: 10.1111/jvim.16387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 01/01/2023] Open
Abstract
Background The relationships among gastric lymphoid follicular hyperplasia (GLFH), Helicobacter‐like organisms (HLOs), and clinical signs have not been established in dogs. Objectives To evaluate the epidemiologic, clinical, endoscopic, and histopathologic findings associated with GLFH in dogs, and determine the association of GLFH with HLOs and the French Bulldog (FB) breed. Animals Two hundred eighty‐eight dogs that underwent gastroscopy between 2013 and 2016. Methods Retrospective, cross‐sectional study. Gastric biopsy samples were reviewed and scored for inflammation and HLOs. Dogs were divided into 3 groups: group 1 (63 FBs), group 2 (45 non‐FB brachycephalic dogs), and group 3 (180 nonbrachycephalic dogs). Variables were evaluated for their association with GLFH. Results Univariate analysis determined that intact males, young age, vomiting, gastroscopic findings (discoloration, hemorrhage, and ulcers), and histopathologic findings (gastric lamina propria lymphocytic infiltration and HLO score) were associated with GLFH (P ≤ .03). In the multivariate analysis, GLFH was associated with the HLO score (odds ratio [OR] > 5 for HLO scores 1‐2 and >15 for HLO score of 3; P < .001), with vomiting (OR > 4; P = .01) but not with FB breed (P = .76) and age (P = .1). The HLO score was associated with younger age (P < .001). Conclusion and Clinical Importance The HLO score was associated with a high GLFH score. Vomiting was associated with GLFH. Helicobacter‐like organisms are highly prevalent in young dogs and GLFH is indirectly associated with this factor. Clinical relevance of the identification of GLFH and HLO remains to be determined.
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Affiliation(s)
- Tom Biénès
- Centre Hospitalier Vétérinaire Fregis, Arcueil, France.,Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Rodolfo Oliveira Leal
- Centre Hospitalier Vétérinaire Fregis, Arcueil, France.,CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal.,Hospital Escolar Veterinário-Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Marina Domínguez-Ruiz
- Centre Hospitalier Vétérinaire Fregis, Arcueil, France.,Hospital Clínico Veterinario de la Universidad Alfonso X el Sabio, Universidad Alfonso X el Sabio, Madrid, Spain
| | | | - Nina Fernandes Rodrigues
- Centre Hospitalier Vétérinaire Fregis, Arcueil, France.,Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | | | | | | | - Juan Hernandez
- Centre Hospitalier Vétérinaire Fregis, Arcueil, France.,Oniris, Department of Clinical Sciences, Nantes-Atlantic College of Veterinary Medicine and Food Sciences, Nantes, France
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Okubo BM, Ricci-Azevedo R, Zobiole NN, Buccini DF, Moreno SE. PREVALÊNCIA DE Helicobacter spp. EM CÃES DE CAMPO GRANDE-MS. CIÊNCIA ANIMAL BRASILEIRA 2017. [DOI: 10.1590/1089-6891v18e-17286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Resumo A Helicobacter spp. é uma bactéria Gram negativa espiralada, de grande importância clínica, que se relaciona a patogenias como gastrite e úlceras pépticas e, mais recentemente, com o carcinoma gástrico em humanos. Evidências sugerem o potencial dos animais, principalmente os domésticos, como fonte de infecção zoonótica das helicobactérias, já que bactérias com morfologia similar às encontradas em animais foram observadas no estômago de humanos com gastrite. Nesse contexto, os cães podem ser um importante reservatório de agentes infecciosos como a Helicobacter spp. O presente trabalho teve como objetivo avaliar a prevalência de Helicobacter spp. em cães do Centro de Controle de Zoonoses de Campo Grande/MS. Para tanto, foram utilizados 96 cães dos quais foram colhidas amostras do corpo, fundo e antro gástrico, para avaliação da presença da Helicobacter spp. por meio do teste rápido de urease e análise histológica. O teste rápido de urease permitiu a detecção de Helicobacter spp. em 94,7% dos cães; já a análise histológica indicou a presença de Helicobacter spp. em 100% dos animais avaliados com predominio da bactéria na região do fundo do estômago.
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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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Liu J, He L, Haesebrouck F, Gong Y, Flahou B, Cao Q, Zhang J. Prevalence of Coinfection with Gastric Non-Helicobacter pylori Helicobacter (NHPH) Species in Helicobacter pylori-infected Patients Suffering from Gastric Disease in Beijing, China. Helicobacter 2015; 20:284-90. [PMID: 25510739 DOI: 10.1111/hel.12201] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The Helicobacter heilmannii sensu lato (H. heilmannii s.l.) group consists of long, spiral-shaped bacteria naturally colonizing the stomach of animals. Moreover, bacteria belonging to this group have been observed in 0.2-6% of human gastric biopsy specimens, and associations have been made with the development of chronic gastritis, peptic ulceration, and gastric MALT lymphoma in humans. MATERIALS AND METHODS To gain insight into the prevalence of H. heilmannii s.l. infections in patients suffering from gastric disease in China, H. heilmannii s.l. species-specific PCRs were performed on DNA extracts from rapid urease test (RUT)-positive gastric biopsies from 1517 patients followed by nucleotide sequencing. At the same time, Helicobacter pylori cultivation and specific PCR was performed to assess H. pylori infection in these patients. RESULTS In total, H. heilmannii s.l. infection was detected in 11.87% (178/1499) of H. pylori-positive patients. The prevalence of H. suis, H. felis, H. bizzozeronii, H. heilmannii sensu stricto (s.s.), and H. salomonis in the patients was 6.94%, 2.20%, 0.13%, 0.07%, and 2.54%, respectively. Results revealed that all patients with H. heilmannii s.l. infection were co-infected with H. pylori, and some patients were co-infected with more than two different Helicobacter species. CONCLUSIONS Helicobacter heilmannii s.l. infections are fairly common in Chinese patients. This should be kept in mind when diagnosing the cause of gastric pathologies in patients. Helicobacter suis was shown to be by far the most prevalent H. heilmannii s.l.species.
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Affiliation(s)
- Jie Liu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, China
| | - Lihua He
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, China
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology & Avian Diseases Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Yanan Gong
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, China
| | - Bram Flahou
- Department of Pathology, Bacteriology & Avian Diseases Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Qizhi Cao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, China
| | - Jianzhong Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, China
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6
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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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7
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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: 30] [Impact Index Per Article: 3.0] [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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8
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Gastric helicobacters in domestic animals and nonhuman primates and their significance for human health. Clin Microbiol Rev 2009; 22:202-23, Table of Contents. [PMID: 19366912 DOI: 10.1128/cmr.00041-08] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Helicobacters other than Helicobacter pylori have been associated with gastritis, gastric ulcers, and gastric mucosa-associated lymphoid tissue lymphoma in humans. These very fastidious microorganisms with a typical large spiral-shaped morphology were provisionally designated "H. heilmannii," but in fact they comprise at least five different Helicobacter species, all of which are known to colonize the gastric mucosa of animals. H. suis, which has been isolated from the stomachs of pigs, is the most prevalent gastric non-H. pylori Helicobacter species in humans. Other gastric non-H. pylori helicobacters colonizing the human stomach are H. felis, H. salomonis, H. bizzozeronii, and the still-uncultivable "Candidatus Helicobacter heilmannii." These microorganisms are often detected in the stomachs of dogs and cats. "Candidatus Helicobacter bovis" is highly prevalent in the abomasums of cattle but has only occasionally been detected in the stomachs of humans. There are clear indications that gastric non-H. pylori Helicobacter infections in humans originate from animals, and it is likely that transmission to humans occurs through direct contact. Little is known about the virulence factors of these microorganisms. The recent successes with in vitro isolation of non-H. pylori helicobacters from domestic animals open new perspectives for studying these microorganisms and their interactions with the host.
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9
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Gastrite à Helicobacter heilmannii probablement transmise à l’enfant par ses chiens. Arch Pediatr 2009; 16:426-9. [DOI: 10.1016/j.arcped.2009.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2007] [Revised: 11/14/2008] [Accepted: 02/01/2009] [Indexed: 11/13/2022]
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10
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Baele M, Pasmans F, Flahou B, Chiers K, Ducatelle R, Haesebrouck F. Non-Helicobacter pylori helicobacters detected in the stomach of humans comprise several naturally occurring Helicobacter species in animals. ACTA ACUST UNITED AC 2009; 55:306-13. [PMID: 19243435 DOI: 10.1111/j.1574-695x.2009.00535.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Besides the well-known gastric pathogen Helicobacter pylori, other Helicobacter species with a spiral morphology have been detected in a minority of human patients who have undergone gastroscopy. The very fastidious nature of these non-Helicobacter pylori helicobacters (NHPH) makes their in vitro isolation difficult. These organisms have been designated 'Helicobacter heilmannii'. However, sequencing of several genes detected in NHPH-infected tissues has shown that the 'H. heilmannii' group comprises at least five different Helicobacter species, all of them known to colonize the stomach of animals. Recent investigations have indicated that Helicobacter suis is the most prevalent NHPH species in human. This species has only recently been isolated in vitro from porcine stomach mucosa. Other NHPH that colonize the human stomach are Helicobacter felis, Helicobacter bizzozeronii, Helicobacter salomonis and 'Candidatus Helicobacter heilmannii'. In numerous case reports of human gastric NHPH infections, no substantial information is available about the species status of the infecting strain, making it difficult to link the species with certain pathologies. This review aims to clarify the complex nomenclature of NHPH species associated with human gastric disease and their possible animal origin. It is proposed to use the term 'gastric NHPH' to designate gastric spirals that are morphologically different from H. pylori when no identification is available at the species level. Species designations should be reserved for those situations in which the species is defined.
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Affiliation(s)
- Margo Baele
- Department of Pathology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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11
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Siala K, Sýkora J, Hes O, Varvarovská J, Pazdiora P. Helicobacter heilmannii reinfection in a Helicobacter pylori negative adolescent: a 4-year follow-up. J Clin Gastroenterol 2007; 41:221-2. [PMID: 17245224 DOI: 10.1097/01.mcg.0000212605.13348.2c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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De Bock M, Van den Bulck K, Hellemans A, Daminet S, Coche JC, Debongnie JC, Decostere A, Haesebrouck F, Ducatelle R. Peptic ulcer disease associated with Helicobacter felis in a dog owner. Eur J Gastroenterol Hepatol 2007; 19:79-82. [PMID: 17206081 DOI: 10.1097/01.meg.0000221856.19201.33] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The aim of this study was to investigate the identity of the Helicobacter heilmannii-like bacteria found in the stomach of a human patient suffering from stomach ulcers and her asymptomatic pet dog. An elderly woman was referred for gastroscopy because of right hypochondrial pain, nausea, anorexia and vomiting. Gastric ulcers were observed and histology revealed the presence of multiple H. heilmannii-like bacteria. Multiplex polymerase chain reaction (PCR) identified the bacteria as H. felis. Her pet dog was also examined gastroscopically. Only mild gastric lesions were found but PCR showed the presence of H. felis as well as H. bizzozeronii and Candidatus H. heilmannii. This report associates H. felis infection in humans with severe gastric ulceration. Moreover, the suggestion can be made that the patient contracted H. felis from her dog.
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Affiliation(s)
- Manuelle De Bock
- Department of Pathology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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13
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Orel R, Mlinaric V, Stepec S, Luzar B, Brencic E, Cerar A. Acute phlegmonous gastritis associated with Helicobacter heilmannii infection in a child. Dig Dis Sci 2006; 51:2322-5. [PMID: 17103036 DOI: 10.1007/s10620-006-9193-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2005] [Accepted: 12/05/2005] [Indexed: 12/17/2022]
Affiliation(s)
- Rok Orel
- Division of Paediatrics, Department of Gastroenterology, University Medical Centre Ljubljana, Pediatricna klinika, Vrazov trg 1, 1000, Ljubljana, Slovenia.
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14
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De Bock M, D'Herde K, Duchateau L, Hellemans A, Decostere A, Haesebrouck F, Ducatelle R. The effect of Helicobacter felis and Helicobacter bizzozeronii on the gastric mucosa in Mongolian gerbils: a sequential pathological study. J Comp Pathol 2006; 135:226-36. [PMID: 17069831 DOI: 10.1016/j.jcpa.2006.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Accepted: 08/17/2006] [Indexed: 12/23/2022]
Abstract
In contrast to Helicobacter(H.) pylori, little is known about the pathogenic mechanisms of gastric non-H. pylori Helicobacter species. Mongolian gerbils were inoculated intragastrically with H. felis or H. bizzozeronii and killed at different timepoints post-inoculation (p.i.), stomach tissue being taken for light and transmission electron microscopy (TEM) and polymerase chain reaction (PCR) analysis. Parietal cells (PCs), apoptosis, cell proliferation and nuclear factor-kappaB (NF-kappaB) activation were "visualized" immunohistochemically. Inflammation consisted of neutrophilic granulocytes, mainly in the antrum, and lymphocytic infiltrates around the limiting ridge and throughout the stomach mucosa and submucosa. From day 11 p.i. onwards, H. felis-inoculated animals showed moderate to severe loss of PCs extending from the limiting ridge into the fundus. Apoptotic cells, spiral bacteria, cell proliferation, and NF-kappaB activation were detected at the transition zone between affected and normal PCs. TEM revealed interaction of H. felis flagella with PCs and chief cells. Moreover, H. felis was seen in proximity to, and inside, necrotic cells. At 10 weeks p.i., some H. felis-infected gerbils showed complete loss of fundic glands, and mucous metaplasia of the epithelium. H. bizzozeronii, which made no flagellar contact with epithelial cells, was associated with only mild PC loss. The mechanism by which H. felis induces PC necrosis and apoptosis remains unclear. The observed flagellar contact and NF-kappaB activation may play an important role in H. felis-associated inflammation.
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Affiliation(s)
- M De Bock
- Departments of Pathology, Bacteriology and Avian Diseases, Faculty of Medicine, Ghent University, Belgium.
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15
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Recordati C, Gualdi V, Tosi S, Facchini RV, Pengo G, Luini M, Simpson KW, Scanziani E. Detection of Helicobacter spp. DNA in the oral cavity of dogs. Vet Microbiol 2006; 119:346-51. [PMID: 17030464 DOI: 10.1016/j.vetmic.2006.08.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Revised: 08/25/2006] [Accepted: 08/31/2006] [Indexed: 12/15/2022]
Abstract
The mode of acquisition of gastric Helicobacter spp. infection in dogs has not been determined. It is suspected that oral-oral and faecal-oral transmission may be involved. The present study sought to determine if Helicobacter spp. DNA is present in the oral cavity of healthy and vomiting dogs. Thirty-eight pet dogs (27 vomiting and 11 clinically healthy) were studied. The presence of Helicobacter spp. was determined by single and nested PCR evaluation of DNA extracted from saliva, dental plaque and gastric biopsy samples. Helicobacter spp. DNA was detected by nested PCR in 36 (94.7%) gastric biopsies, 17 (44.7%) dental plaque and 19 (50%) saliva samples out of the 38 dogs examined. Overall 27 (71.1%) dogs screened by nested PCR were found to harbour Helicobacter spp. DNA in the oral cavity (dental plaque and/or saliva). There was no significant difference in the prevalence of Helicobacter spp. DNA in the oral cavity of vomiting and healthy dogs, and the time from vomiting to oral sampling did not have significant impact. This study confirms the high prevalence of gastric Helicobacter spp. infection in dogs, and reveals that Helicobacter spp. DNA is detectable in the oral cavity of over 70% of dogs. These findings support the possibility of oral-oral transmission between dogs and that the canine oral cavity may act as source of non-pylori Helicobacter spp. infection for humans.
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Affiliation(s)
- Camilla Recordati
- Dipartimento di Patologia Animale, Igiene e Sanità Pubblica Veterinaria, Sezione di Anatomia Patologica Veterinaria e Patologia Aviare, Facoltà di Medicina Veterinaria, Università degli Studi di Milano, Milano, Italy.
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Hellemans A, Decostere A, Haesebrouck F, Ducatelle R. Evaluation of antibiotic treatment against "Candidatus Helicobacter suis" in a mouse model. Antimicrob Agents Chemother 2005; 49:4530-5. [PMID: 16251292 PMCID: PMC1280154 DOI: 10.1128/aac.49.11.4530-4535.2005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2005] [Revised: 07/13/2005] [Accepted: 08/19/2005] [Indexed: 02/08/2023] Open
Abstract
"Helicobacter heilmannii" (proposed name) type 1 colonizes the human stomach. It has been shown to be identical to "Candidatus Helicobacter suis," a Helicobacter species colonizing the stomachs of >60% of slaughter pigs. This bacterium has not been isolated in vitro until now. Antibiotic susceptibility testing of "Candidatus Helicobacter suis" has not been carried out so far. For the present study, a mouse model was adopted to evaluate the antibiotic susceptibility of this organism. Mice infected with "Candidatus Helicobacter suis" were treated with amoxicillin and omeprazole, a therapy which is used to treat H. heilmannii infections in humans. Two different isolates of "Candidatus Helicobacter suis" were tested. The excretion of bacterial DNA was assessed during treatment, using PCR on fecal samples. At the end of the experiment, 8 days after the cessation of treatment, the presence of infection was evaluated using a urease test and a PCR test on stomach samples. A marked decrease in the excretion of bacterial DNA was observed a few days after the onset of treatment, and the level remained low until the end of the experiment. A difference in susceptibility between the two "Candidatus Helicobacter suis" isolates was pointed out. The in vivo mouse model infected with "Candidatus Helicobacter suis" will be useful for further screening of potential therapeutic regimens.
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Affiliation(s)
- A Hellemans
- Laboratory of Pathology, Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
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De Groote D, Van Doorn LJ, Van den Bulck K, Vandamme P, Vieth M, Stolte M, Debongnie JC, Burette A, Haesebrouck F, Ducatelle R. Detection of non-pylori Helicobacter species in "Helicobacter heilmannii"-infected humans. Helicobacter 2005; 10:398-406. [PMID: 16181350 DOI: 10.1111/j.1523-5378.2005.00347.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND A small proportion of patients suffering from chronic active gastritis are diagnosed with gastric Helicobacter species other than Helicobacter pylori. Circumstantial evidence has suggested that these bacteria, also referred to as "Helicobacter heilmannii"-like organisms (HHLO), may be transmitted through animals. The isolation of a Helicobacter bizzozeronii strain from a human patient confirmed this hypothesis. It was the aim of the present study to assess the presence of animal Helicobacter species and H. pylori in humans infected with HHLO, as diagnosed by histology. METHODS Paraffin-embedded gastric biopsy specimens of 108 HHLO-infected patients (42 women and 66 men) from three clinical centers were screened for the presence of animal gastric Helicobacter species by polymerase chain reaction (PCR), using assays targeting the 16S rDNA region of the three known canine and feline helicobacters (H. bizzozeronii, H. salomonis and H. felis), "Candidatus H. suis", and "Candidatus H. bovis". In addition, the presence of H. pylori was evaluated by multiplex PCR analysis. RESULTS In 63.4% of the stomachs (64/101) classification of the Helicobacter infection into the above mentioned groups was achieved. Non-pylori Helicobacter species commonly colonizing the stomachs of cats and dogs were found in 48.5% (49/101) of the patients. Fourteen (13.9%) samples tested positive for "Candidatus H. suis", and "Candidatus H. bovis" was demonstrated in 1 (0.9%) patient. The presence of H. pylori was established in 13 patients (12.9%). Eleven stomachs (10.9%) were infected with at least two different Helicobacter species. CONCLUSIONS This study identifies animal Helicobacter species in the stomach of a large series of HHLO-infected patients, which may have clinical implications in a subset of patients with gastric disease.
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Affiliation(s)
- Dominic De Groote
- Technology Transfer Office, Ghent University, Lammerstraat 35, B-9000 Ghent, Belgium
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Xing JZ, Clarke C, Zhu L, Gabos S. Development of a microelectronic chip array for high-throughput genotyping of Helicobacter species and screening for antimicrobial resistance. ACTA ACUST UNITED AC 2005; 10:235-45. [PMID: 15809319 DOI: 10.1177/1087057104273781] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A microelectronic array assay was developed to specifically genotype Helicobacter pylori versus Helicobacter heilmannii and to determine antimicrobial resistance. Helicobacter 16S rRNA and 23S rRNA genes were specifically generated with Helicobacter genus-specific primers, respectively. The single-nucleotide polymorphisms (SNPs) in 16S rRNA, 268T specific in the H. pylori sequence, and 263A specific in H. heilmannii were used as molecular markers for identification of H. pylori and H. heilmannii, respectively. A triple-base-pair resistant mutation, AGA965-967TTC in 16S rRNA, is known to be responsible for H. pylori tetracycline resistance and was detected to identify resistant strains. H. pylori macrolide resistance was determined by the identification of 3 defined mutations in the 23S rRNA gene using the same method. The assay could be directly used to detect H. pylori in feces. The assay performs multiple determinations, including identification of Helicobacter species and antibiotic resistances, on the same microelectronic platform and is highly amenable to the development of other DNA-based assays.
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Affiliation(s)
- James Z Xing
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada.
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Van den Bulck K, Decostere A, Baele M, Driessen A, Debongnie JC, Burette A, Stolte M, Ducatelle R, Haesebrouck F. Identification of non-Helicobacter pylori spiral organisms in gastric samples from humans, dogs, and cats. J Clin Microbiol 2005; 43:2256-60. [PMID: 15872252 PMCID: PMC1153784 DOI: 10.1128/jcm.43.5.2256-2260.2005] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Tightly coiled bacteria are a rare cause of gastric pathology in humans and represent a mixture of species for which a zoonotic origin is suspected. Similar organisms are common inhabitants of the gastric mucosae of carnivores and pigs. It was the goal of the present study to determine the actual occurrence of each individual Helicobacter species in human, canine, and feline stomachs in order to better understand the possible zoonotic significance. Gastric biopsy samples from humans with histological evidence of non-Helicobacter pylori spiral bacteria (n = 123) and samples from the gastric antrum, corpus, and cardia from dogs (n = 110) and cats (n = 43) were subjected to a multiplex PCR, enabling the identification of Helicobacter felis, Helicobacter bizzozeronii, Helicobacter salomonis, and "Candidatus Helicobacter suis." A PCR for detecting H. pylori was applied to all human samples. Single infections with "Candidatus Helicobacter suis," H. felis, H. bizzozeronii, H. salomonis, a hitherto unknown genotype of a non-H. pylori spiral organism (Helicobacter-like organism 135 [HLO135]), and H. pylori were identified in 30.9%, 8.9%, 2.4%, 11.4%, 7.3%, and 8.9% of the human biopsy samples, respectively. Mixed infections (16.3%) with two or even three of these were also found. In the canine stomach, H. bizzozeronii (70.0%) was encountered as the main spiral organism, while H. felis (62.7%) and HLO135 (67.4%) were the predominant Helicobacter species found in the feline gastric mucosa. Although the majority of human non-H. pylori organisms are Helicobacter species naturally occurring in the stomachs of pigs, cats, and dogs, the frequent identification of H. salomonis in human gastric biopsy samples is in contrast to its rare identification in pet carnivore samples, urging us to suspect other sources of infection.
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Affiliation(s)
- Kathleen Van den Bulck
- Department of Pathology, Bacteriology, and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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Gasbarrini A, Carloni E, Gasbarrini G, Ménard A. Helicobacter pylori and extragastric diseases -- other helicobacters. Helicobacter 2003; 8 Suppl 1:68-76. [PMID: 14617220 DOI: 10.1046/j.1523-5378.2003.00167.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The role of Helicobacter pylori infection is explored in more and more extragastric diseases without definite proof in most of the studies, except possibly some hematologic diseases. In cardiovascular diseases, including stroke, the presence of CagA positive strains may be involved. The possible role of helicobacters in hepatobiliary diseases goes beyond that of H. pylori to involve enterohepatic helicobacters. New Helicobacter species are regularly described and molecular methods are developed to improve their detection. Helicobacter felis remains the major species to be used in animal models of Helicobacter infection.
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Affiliation(s)
- Antonio Gasbarrini
- Istituti di Patologia Medica e Medicina Interna, Universita Cattolica, Rome 00168, Italy.
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