Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales
ABSTRACT A novel helicobacter with the proposed name Helicobacter cetorum , sp. nov. (type strain MIT 99-5656; GenBank accession number AF 292378 ), was cultured from the main stomach of two wild, stranded Atlantic white-sided dolphins ( Lagenorhynchus acutus ) and from the feces of three captive ce...
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crasmicro:10.1128/jcm.40.12.4536-4543.2002 2024-09-15T17:59:03+00:00 Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales Harper, C. G. Feng, Y. Xu, S. Taylor, N. S. Kinsel, M. Dewhirst, F. E. Paster, B. J. Greenwell, M. Levine, G. Rogers, A. Fox, J. G. 2002 http://dx.doi.org/10.1128/jcm.40.12.4536-4543.2002 https://journals.asm.org/doi/pdf/10.1128/JCM.40.12.4536-4543.2002 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Journal of Clinical Microbiology volume 40, issue 12, page 4536-4543 ISSN 0095-1137 1098-660X journal-article 2002 crasmicro https://doi.org/10.1128/jcm.40.12.4536-4543.2002 2024-08-12T04:06:18Z ABSTRACT A novel helicobacter with the proposed name Helicobacter cetorum , sp. nov. (type strain MIT 99-5656; GenBank accession number AF 292378 ), was cultured from the main stomach of two wild, stranded Atlantic white-sided dolphins ( Lagenorhynchus acutus ) and from the feces of three captive cetaceans (a Pacific white-sided dolphin [ Lagenorhynchus obliquidens ]; an Atlantic bottlenose dolphin [ Tursiops truncatus ]; and a beluga whale [ Delphinapterus leucas ]). The infected captive cetaceans were either subclinical, or clinical signs included intermittent regurgitation, inappetance, weight loss, and lethargy. Ulcers were observed in the esophagus and forestomach during endoscopic examination in two of the three captive animals. In the third animal, esophageal linear erosions were visualized endoscopically, and histopathological evaluation of the main stomach revealed multifocal lymphoplasmacytic gastritis with silver-stained spiral-shaped bacteria. Helicobacter cetorum is a fusiform gram-negative bacterium with a single bipolar flagellum. The isolates grow under microaerobic conditions at 37 and 42°C but not at 25°C. H. cetorum is urease, catalase, and oxidase positive, and it is sensitive to cephalothin. The isolates from the wild, stranded dolphins were sensitive to nalidixic acid, whereas the isolates from the collection animals were resistant. By 16S rRNA sequencing it was determined that H. cetorum represented a distinct taxon that clusters most closely with H. pylori. Further studies are necessary to determine the role of H. cetorum in the development of gastric ulcers and gastritis of cetaceans. This is the first description and formal naming of a novel Helicobacter species from a marine mammal. Article in Journal/Newspaper Beluga Beluga whale Beluga* Delphinapterus leucas ASM Journals (American Society for Microbiology) Journal of Clinical Microbiology 40 12 4536 4543 |
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Open Polar |
collection |
ASM Journals (American Society for Microbiology) |
op_collection_id |
crasmicro |
language |
English |
description |
ABSTRACT A novel helicobacter with the proposed name Helicobacter cetorum , sp. nov. (type strain MIT 99-5656; GenBank accession number AF 292378 ), was cultured from the main stomach of two wild, stranded Atlantic white-sided dolphins ( Lagenorhynchus acutus ) and from the feces of three captive cetaceans (a Pacific white-sided dolphin [ Lagenorhynchus obliquidens ]; an Atlantic bottlenose dolphin [ Tursiops truncatus ]; and a beluga whale [ Delphinapterus leucas ]). The infected captive cetaceans were either subclinical, or clinical signs included intermittent regurgitation, inappetance, weight loss, and lethargy. Ulcers were observed in the esophagus and forestomach during endoscopic examination in two of the three captive animals. In the third animal, esophageal linear erosions were visualized endoscopically, and histopathological evaluation of the main stomach revealed multifocal lymphoplasmacytic gastritis with silver-stained spiral-shaped bacteria. Helicobacter cetorum is a fusiform gram-negative bacterium with a single bipolar flagellum. The isolates grow under microaerobic conditions at 37 and 42°C but not at 25°C. H. cetorum is urease, catalase, and oxidase positive, and it is sensitive to cephalothin. The isolates from the wild, stranded dolphins were sensitive to nalidixic acid, whereas the isolates from the collection animals were resistant. By 16S rRNA sequencing it was determined that H. cetorum represented a distinct taxon that clusters most closely with H. pylori. Further studies are necessary to determine the role of H. cetorum in the development of gastric ulcers and gastritis of cetaceans. This is the first description and formal naming of a novel Helicobacter species from a marine mammal. |
format |
Article in Journal/Newspaper |
author |
Harper, C. G. Feng, Y. Xu, S. Taylor, N. S. Kinsel, M. Dewhirst, F. E. Paster, B. J. Greenwell, M. Levine, G. Rogers, A. Fox, J. G. |
spellingShingle |
Harper, C. G. Feng, Y. Xu, S. Taylor, N. S. Kinsel, M. Dewhirst, F. E. Paster, B. J. Greenwell, M. Levine, G. Rogers, A. Fox, J. G. Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
author_facet |
Harper, C. G. Feng, Y. Xu, S. Taylor, N. S. Kinsel, M. Dewhirst, F. E. Paster, B. J. Greenwell, M. Levine, G. Rogers, A. Fox, J. G. |
author_sort |
Harper, C. G. |
title |
Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
title_short |
Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
title_full |
Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
title_fullStr |
Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
title_full_unstemmed |
Helicobacter cetorumsp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales |
title_sort |
helicobacter cetorumsp. nov., a urease-positive helicobacter species isolated from dolphins and whales |
publisher |
American Society for Microbiology |
publishDate |
2002 |
url |
http://dx.doi.org/10.1128/jcm.40.12.4536-4543.2002 https://journals.asm.org/doi/pdf/10.1128/JCM.40.12.4536-4543.2002 |
genre |
Beluga Beluga whale Beluga* Delphinapterus leucas |
genre_facet |
Beluga Beluga whale Beluga* Delphinapterus leucas |
op_source |
Journal of Clinical Microbiology volume 40, issue 12, page 4536-4543 ISSN 0095-1137 1098-660X |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/jcm.40.12.4536-4543.2002 |
container_title |
Journal of Clinical Microbiology |
container_volume |
40 |
container_issue |
12 |
container_start_page |
4536 |
op_container_end_page |
4543 |
_version_ |
1810435996716630016 |