1
|
Suárez-Esquivel M, Alfaro-Alarcón A, Guzmán-Verri C, Barquero-Calvo E. Analysis of the association between density ofHelicobacterspp and gastric lesions in dogs. Am J Vet Res 2017; 78:1414-1420. [DOI: 10.2460/ajvr.78.12.1414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
2
|
García-Alonso G, Monroy-Noyola A, Contreras-Arellano A, Mariscal-Durand JF, Gálvez-Molina Y, Vázquez-Velázquez A, García-Jimenez S, Nuñez P, Cardoso-Taketa A, Villarreal ML. Preclinical evaluation of anti-Helicobacter spp. activity of Hippocratea celastroides Kunth and its acute and sub-acute toxicity. Altern Ther Health Med 2016; 16:445. [PMID: 27825331 PMCID: PMC5101718 DOI: 10.1186/s12906-016-1412-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/21/2016] [Indexed: 12/22/2022]
Abstract
Background Hippocratea celastroides Kunth, commonly known as “cancerina”, is used in Mexican Traditional Medicine for the treatment of gastric and intestinal infections, systemic and skin inflammation, injuries and gastritis. The aim of this research was to assess the anti-Helicobacter pylori activities of hydro-ethanolic root-bark extracts from Hippocratea celastroides Kunth in naturally infected dogs, after testing their acute and subacute toxicities in mice. Methods To determine in vivo acute toxicity, a hydro-ethanolic extract was obtained and administered orally in female and male Balb-C mice, at doses ranging from 2000 to 5000 mg/kg. For the subacute study, a hydro-ethanolic extract was given to male and female Balb-C mice at doses ranging from 200 to 2000 mg/kg body weight. The animals were observed daily over a period of 42 days for signs of toxicity. In the pre-clinical anti-Helicobacter spp. assay, 60 dogs were included. Eighteen and 19 dogs for the experimental and control groups respectively, concluded the study. The experimental treatment consisted of H. celastroides hydro-ethanolic extract and the control treatment of amoxicillin-clarithromycin-omeprazole. Results Oral LD50 (lethal dose 50) values for hydro-ethanolic extract were indeterminable at the highest tested doses. Under the subacute administration, neither mortality nor any sign of toxicity were observed when the hydro-ethanolic extract was administered. There were no significant alterations in biochemical parameters. The prevalence of Helicobacter spp. infection in dogs was 97.1 % for the experimental group and 100 % for the control group. Effectiveness was of 33.3 and 55 % in the experimental and control group respectively. The oral administration of H. celastroides was well-tolerated and safe. Conclusion The root-bark of H. celastroides produced no signs of toxicity, and manifested pharmacological activity that indicated the possibility of an alternative treatment for H. pylori infection. Effectiveness is still low so it is necessary to continue research. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1412-6) contains supplementary material, which is available to authorized users.
Collapse
|
3
|
Amorim I, Taulescu MA, Day MJ, Catoi C, Reis CA, Carneiro F, Gärtner F. Canine Gastric Pathology: A Review. J Comp Pathol 2016; 154:9-37. [PMID: 26774560 DOI: 10.1016/j.jcpa.2015.10.181] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 10/28/2015] [Accepted: 10/30/2015] [Indexed: 12/14/2022]
Abstract
Gastric disorders are common in dogs and are a major reason for veterinary consultation. In human medicine, the classification of gastric diseases based on histological features, genotypes and molecular phenotypes helps to better understand the characteristics of each subtype, and to improve early diagnosis, prevention and treatment. Canine gastric lesions often show strong histological similarities to their human counterparts. However, such conditions in the canine stomach are poorly studied and their cellular and molecular features are largely unknown. This article reviews the histopathological classification of inflammatory and neoplastic lesions of the canine stomach and provides an update on the application of molecular techniques within the field of canine gastric pathology. The canine disorders are compared with current knowledge of the equivalent human diseases.
Collapse
Affiliation(s)
- I Amorim
- Instituto de Investigação e Inovação em Saúde, Universidadedo Porto, Porto, Portugal; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Rua Júlio Amaral de Carvalho nr. 45, Porto, Portugal; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, Portugal
| | - M A Taulescu
- Pathology Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania.
| | - M J Day
- School of Veterinary Sciences, University of Bristol, Langford, Bristol, UK
| | - C Catoi
- Pathology Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - C A Reis
- Instituto de Investigação e Inovação em Saúde, Universidadedo Porto, Porto, Portugal; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Rua Júlio Amaral de Carvalho nr. 45, Porto, Portugal; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, Portugal; Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto, Portugal
| | - F Carneiro
- Instituto de Investigação e Inovação em Saúde, Universidadedo Porto, Porto, Portugal; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, Portugal; Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto, Portugal; Department of Pathology, Centro Hospitalar de São João, Porto, Portugal
| | - F Gärtner
- Instituto de Investigação e Inovação em Saúde, Universidadedo Porto, Porto, Portugal; IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Rua Júlio Amaral de Carvalho nr. 45, Porto, Portugal; Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, Portugal
| |
Collapse
|
4
|
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.
Collapse
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
| |
Collapse
|
5
|
Abstract
Historically, the dog played an important role as a laboratory animal in biomedical research. Although numbers are declining, the use of dogs continues to be common in pharmacokinetics and cardiovascular studies. The normal biology of the dog as both a laboratory and a companion animal has been well studied and reference values are presented here as a clinical and experimental resource. This provides the necessary background to discuss the spontaneous diseases, including infectious and neoplastic conditions, prevalent in purpose bred as well as random source dogs used in biomedical research. In addition, diseases and conditions that arise secondary to the housing and experimental manipulation of dogs is discussed with emphasis on treatment and prevention.
Collapse
|
6
|
Amorim I, Freitas DP, Magalhães A, Faria F, Lopes C, Faustino AM, Smet A, Haesebrouck F, Reis CA, Gärtner F. A comparison of Helicobacter pylori and non-Helicobacter pylori Helicobacter spp. Binding to canine gastric mucosa with defined gastric glycophenotype. Helicobacter 2014; 19:249-59. [PMID: 24689986 DOI: 10.1111/hel.12125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The gastric mucosa of dogs is often colonized by non-Helicobacter pylori helicobacters (NHPH), while H. pylori is the predominant gastric Helicobacter species in humans. The colonization of the human gastric mucosa by H. pylori is highly dependent on the recognition of host glycan receptors. Our goal was to define the canine gastric mucosa glycophenotype and to evaluate the capacity of different gastric Helicobacter species to adhere to the canine gastric mucosa. MATERIALS AND METHODS The glycosylation profile in body and antral compartments of the canine gastric mucosa, with focus on the expression of histo-blood group antigens was evaluated. The in vitro binding capacity of FITC-labeled H. pylori and NHPH to the canine gastric mucosa was assessed in cases representative of the canine glycosylation pattern. RESULTS The canine gastric mucosa lacks expression of type 1 Lewis antigens and presents a broad expression of type 2 structures and A antigen, both in the surface and glandular epithelium. Regarding the canine antral mucosa, H. heilmannii s.s. presented the highest adhesion score whereas in the body region the SabA-positive H. pylori strain was the strain that adhered more. CONCLUSIONS The canine gastric mucosa showed a glycosylation profile different from the human gastric mucosa suggesting that alternative glycan receptors may be involved in Helicobacter spp. binding. Helicobacter pylori and NHPH strains differ in their ability to adhere to canine gastric mucosa. Among the NHPH, H. heilmannii s.s. presented the highest adhesion capacity in agreement with its reported colonization of the canine stomach.
Collapse
Affiliation(s)
- Irina Amorim
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, 4050-313, Portugal; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal
| | | | | | | | | | | | | | | | | | | |
Collapse
|