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Kobayashi Y, Takahashi T, Ikuno Y, Kokubu H, Yamaguchi A, Hoshino Y, Arakawa A, Fujimoto N. Buruli ulcer with eccrine squamous syringometaplasia mimicking squamous cell carcinoma. J Dermatol 2025; 52:e375-e376. [PMID: 39835413 DOI: 10.1111/1346-8138.17637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2024] [Revised: 12/29/2024] [Accepted: 01/08/2025] [Indexed: 01/22/2025]
Affiliation(s)
- Yoshimichi Kobayashi
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Toshifumi Takahashi
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Yasuaki Ikuno
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Hiraku Kokubu
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Akihiko Yamaguchi
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Yoshihiko Hoshino
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Akiko Arakawa
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
- Department of Dermatology, Ludwig-Maximilian-University, Munich, Germany
| | - Noriki Fujimoto
- Department of Dermatology, Shiga University of Medical Science, Otsu, Shiga, Japan
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Fukaura R, Ato M, Murase C, Miyamoto Y, Sugawara-Mikami M, Takahashi T, Hoshino Y, Fujimoto N, Akiyama M, Ishii N, Yotsu R. Buruli ulcer: An epidemiological update from Japan. J Dermatol 2025; 52:3-10. [PMID: 39350453 DOI: 10.1111/1346-8138.17483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 08/15/2024] [Accepted: 09/13/2024] [Indexed: 01/07/2025]
Abstract
Japan is one of the rare non-tropical countries with documented cases of Buruli ulcer (BU). Mycobacterium ulcerans subsp. shinshuense has been identified as the causative agent. The first report of BU in Japan dates back to 1982, with sporadic reports thereafter. Recently, the number of cases has been on the increase, and 50 cases (57.7%) are from the past decade alone, out of a total of 87 cases reported to date. Japan's well-developed healthcare facilities play a crucial role in enabling detailed investigations and providing appropriate treatment for patients, contributing to a favorable prognosis. However, the rarity of the disease results in lack of awareness among healthcare professionals, leading to frequent delays in diagnosis. This article aims to offer an updated overview of BU cases in Japan and to raise awareness of BU among dermatologists and other healthcare professionals in a non-endemic setting.
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Affiliation(s)
- Ryo Fukaura
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Manabu Ato
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chiaki Murase
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuji Miyamoto
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | - Yoshihiko Hoshino
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Noriki Fujimoto
- Department of Dermatology, Shiga University of Medical Science, Otsu, Japan
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Rie Yotsu
- Department of Tropical Medicine and Infectious Disease, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
- Department of Dermatology, National Center for Global Health and Medicine, Tokyo, Japan
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
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Fevereiro J, Fraga AG, Pedrosa J. Genetics in the Host-Mycobacterium ulcerans interaction. Immunol Rev 2021; 301:222-241. [PMID: 33682158 DOI: 10.1111/imr.12958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 11/30/2022]
Abstract
Buruli ulcer is an emerging infectious disease associated with high morbidity and unpredictable outbreaks. It is caused by Mycobacterium ulcerans, a slow-growing pathogen evolutionarily shaped by the acquisition of a plasmid involved in the production of a potent macrolide-like cytotoxin and by genome rearrangements and downsizing. These events culminated in an uncommon infection pattern, whereby M. ulcerans is both able to induce the initiation of the inflammatory cascade and the cell death of its proponents, as well as to survive within the phagosome and in the extracellular milieu. In such extreme conditions, the host is sentenced to rely on a highly orchestrated genetic landscape to be able to control the infection. We here revisit the dynamics of M. ulcerans infection, drawing parallels from other mycobacterioses and integrating the most recent knowledge on its evolution and pathogenicity in its interaction with the host immune response.
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Affiliation(s)
- João Fevereiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra G Fraga
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Jorge Pedrosa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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