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Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018
Community-acquired pneumonia (CAP) is a common disease responsible for significant morbidity and mortality. However, the definite etiology of CAP often remains unresolved, suggesting that unknown agents of pneumonia remain to be identified. The recently discovered members of the order Chlamydiales,...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560421/ https://www.ncbi.nlm.nih.gov/pubmed/31108956 http://dx.doi.org/10.3390/microorganisms7050141 |
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author | Hokynar, Kati Kurkela, Satu Nieminen, Tea Saxen, Harri Vesterinen, Eero J. Mannonen, Laura Pietikäinen, Risto Puolakkainen, Mirja |
author_facet | Hokynar, Kati Kurkela, Satu Nieminen, Tea Saxen, Harri Vesterinen, Eero J. Mannonen, Laura Pietikäinen, Risto Puolakkainen, Mirja |
author_sort | Hokynar, Kati |
collection | PubMed |
description | Community-acquired pneumonia (CAP) is a common disease responsible for significant morbidity and mortality. However, the definite etiology of CAP often remains unresolved, suggesting that unknown agents of pneumonia remain to be identified. The recently discovered members of the order Chlamydiales, Chlamydia-related bacteria (CRB), are considered as possible emerging agents of CAP. Parachlamydia acanthamoebae is the most studied candidate. It survives and replicates inside free-living amoeba, which it might potentially use as a vehicle to infect animals and humans. A Mycoplasma pneumoniae outbreak was observed in Kymenlaakso region in Southeastern Finland during August 2017–January 2018. We determined the occurrence of Chlamydiales bacteria and their natural host, free-living amoeba in respiratory specimens collected during this outbreak with molecular methods. Altogether, 22/278 (7.9%) of the samples contained Chlamydiales DNA. By sequence analysis, majority of the CRBs detected were members of the Parachlamydiaceae family. Amoebal DNA was not detected within the sample material. Our study further proposes that Parachlamydiaceae could be a potential agent causing atypical CAP in children and adolescents. |
format | Online Article Text |
id | pubmed-6560421 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-65604212019-06-17 Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 Hokynar, Kati Kurkela, Satu Nieminen, Tea Saxen, Harri Vesterinen, Eero J. Mannonen, Laura Pietikäinen, Risto Puolakkainen, Mirja Microorganisms Article Community-acquired pneumonia (CAP) is a common disease responsible for significant morbidity and mortality. However, the definite etiology of CAP often remains unresolved, suggesting that unknown agents of pneumonia remain to be identified. The recently discovered members of the order Chlamydiales, Chlamydia-related bacteria (CRB), are considered as possible emerging agents of CAP. Parachlamydia acanthamoebae is the most studied candidate. It survives and replicates inside free-living amoeba, which it might potentially use as a vehicle to infect animals and humans. A Mycoplasma pneumoniae outbreak was observed in Kymenlaakso region in Southeastern Finland during August 2017–January 2018. We determined the occurrence of Chlamydiales bacteria and their natural host, free-living amoeba in respiratory specimens collected during this outbreak with molecular methods. Altogether, 22/278 (7.9%) of the samples contained Chlamydiales DNA. By sequence analysis, majority of the CRBs detected were members of the Parachlamydiaceae family. Amoebal DNA was not detected within the sample material. Our study further proposes that Parachlamydiaceae could be a potential agent causing atypical CAP in children and adolescents. MDPI 2019-05-17 /pmc/articles/PMC6560421/ /pubmed/31108956 http://dx.doi.org/10.3390/microorganisms7050141 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Hokynar, Kati Kurkela, Satu Nieminen, Tea Saxen, Harri Vesterinen, Eero J. Mannonen, Laura Pietikäinen, Risto Puolakkainen, Mirja Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title | Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title_full | Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title_fullStr | Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title_full_unstemmed | Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title_short | Parachlamydia acanthamoebae Detected during a Pneumonia Outbreak in Southeastern Finland, in 2017–2018 |
title_sort | parachlamydia acanthamoebae detected during a pneumonia outbreak in southeastern finland, in 2017–2018 |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560421/ https://www.ncbi.nlm.nih.gov/pubmed/31108956 http://dx.doi.org/10.3390/microorganisms7050141 |
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