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Cheng Y, Zhu W, Han S, Yang J, Wu G, Zhao G, He X. Roseomonas populi sp. nov., an acetate-degrading bacteria isolated from the stem of Populus tomentosa. Antonie Van Leeuwenhoek 2023; 117:2. [PMID: 38147266 DOI: 10.1007/s10482-023-01911-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 10/24/2023] [Indexed: 12/27/2023]
Abstract
Strain CN29T, isolated from the stem of 5- to 6-year-old Populus tomentosa in Shandong, China, was characterized using a polyphasic taxonomic approach. Cells of CN29T were Gram-stain negative, aerobic, nonspore-forming, and nonmotile coccoid. Growth occurred at 20-37 °C, pH 4.0-9.0 (optimum, pH 6.0), and with 0-1% NaCl (optimum, 1%). Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain CN29T was closely related to members of the genus Roseomonas and closest to Roseomonas pecuniae N75T (96.6%). This classification was further supported by phylogenetic analysis using additional core genes. The average nucleotide identity and digital DNA‒DNA hybridization values between strain CN29T and Roseomonas populi CN29T were 82.7% and 27.8%, respectively. The genome size of strain CN29T was 5.87 Mb, with a G + C content of 70.9%. The major cellular fatty acids included summed feature 8 (C18:1 ω7c/C18:1 ω6c), C19:0 cyclo ω8c and C16:0. The major respiratory quinone was Q-10. The polar lipids were phosphatidylcholine, aminolipid, phosphatidylglycerol, and diphosphatidylglycerol. Strain CN29T can utilize acetate as a carbon source for growth and metabolism. Additionally, it contains acid phosphatase (2-naphthyl phosphate), which catalyzes the hydrolysis of phosphoric monoesters. The CN29T strain contains several genes, including maeB, gdhB, and cysJ, involved in carbon, nitrogen, and sulfur cycling. These findings suggest that the strain may actively participate in ecosystem cycling, leading to soil improvement and promoting the growth of poplar trees. Based on the phylogenetic, phenotypic, and genotypic characteristics, strain CN29T is concluded to represent a novel species of the genus Roseomonas, for which the name Roseomonas populi sp. nov. is proposed. The type strain is CN29T (= JCM 35579T = GDMCC 1.3267T).
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Affiliation(s)
- Yao Cheng
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Wen Zhu
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Shuo Han
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Jingjing Yang
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Guanqi Wu
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Guozhu Zhao
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Xiangwei He
- Beijing Key Laboratory of Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
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Matsuhisa Y, Kenzaka T, Hirose H, Gotoh T. Cellulitis caused by Roseomonas mucosa in a child: a case report. BMC Infect Dis 2023; 23:867. [PMID: 38082373 PMCID: PMC10712127 DOI: 10.1186/s12879-023-08875-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Roseomonas mucosa (R. mucosa) is a pink-pigmented, Gram-negative short rod bacterium. It is isolated from moist environments and skin, resistant to multiple drugs, including broad-spectrum cephalosporins, and a rare cause of infection with limited reports. R. mucosa mostly causes catheter-related bloodstream infections, with even fewer reports of skin and soft tissue infections. CASE PRESENTATION A 10-year-old boy received topical steroid treatment for sebum-deficient eczema. A few days before the visit, he was bitten by an insect on the front of his right lower leg and scratched it due to itching. The day before the visit, redness, swelling, and mild pain in the same area were observed. Based on his symptoms, he was diagnosed with cellulitis. He was treated with sulfamethoxazole/trimethoprim, and his symptoms improved. Pus culture revealed R. mucosa. CONCLUSIONS We report a rare case of cellulitis caused by R. mucosa. Infections caused by rare organisms that cause opportunistic infections, such as R. mucosa, should be considered in patients with compromised skin barrier function and regular topical steroid use. Gram stain detection of organisms other than Gram-positive cocci should be considered.
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Affiliation(s)
- Yuki Matsuhisa
- Department of Pediatrics, Center for Community Medicine in North-Western Gifu Prefecture, National Health Insurance Shirotori Hospital, 1205-1, Tamezani, Shirotori-cho, Gujo, Gifu, 501-5122, Japan.
- Department of General Medicine, Center for Community Medicine in North-Western Gifu, Prefecture National Health Insurance Shirotori Hospital, 1205-1, Tamezani, Shirotori-cho, Gujo, Gifu, 501-5122, Japan.
| | - Tsuneaki Kenzaka
- Department of Internal Medicine, Hyogo Prefectural Tamba Medical Center, 2002-7 Iso, Hikami- cho, Tamba, Hyogo, 669-3495, Japan
- Division of Community Medicine and Career Development, Kobe University Graduate School of Medicine, 2-1-5 Arata-cho, Hyogo-ku, Kobe, Hyogo, 652-0032, Japan
| | - Hideo Hirose
- Department of General Medicine, Center for Community Medicine in North-Western Gifu, Prefecture National Health Insurance Shirotori Hospital, 1205-1, Tamezani, Shirotori-cho, Gujo, Gifu, 501-5122, Japan
| | - Tadao Gotoh
- Department of General Medicine, Center for Community Medicine in North-Western Gifu, Prefecture National Health Insurance Shirotori Hospital, 1205-1, Tamezani, Shirotori-cho, Gujo, Gifu, 501-5122, Japan
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Rodriguez JA, Gushiken AC. Roseomonas Species Bacteremia With Associated Endocarditis and Possible CNS Septic Embolic Phenomenon. Cureus 2023; 15:e40318. [PMID: 37448416 PMCID: PMC10337875 DOI: 10.7759/cureus.40318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2023] [Indexed: 07/15/2023] Open
Abstract
Rosemonas species has been associated with infections in both immunocompetent and immunocompromised hosts, manifesting as peritonitis, bacteremia, catheter-related bacteremia, endophthalmitis, spondylitis, and endocarditis. Here we present a man in his 60s who was brought to our institution for sudden onset of aphasia, right-sided paresthesia, and new onset tonic-clonic seizure episodes. At presentation, he was found to have severe lactic acidosis, acute kidney failure, bilateral hydronephrosis, elevated prostate-specific antigen (PSA), and an enlarged prostate. Blood cultures obtained on admission later grew Roseomonas species for which he was started on meropenem. A trans-esophageal echocardiogram (TEE) showed multiple very thin mobile densities on the ventricular side of the aortic valve; magnetic resonance imaging (MRI) of the brain revealed an 11 mm acute/subacute hemorrhage. The patient was discharged in stable condition on Ertapenem intravenous therapy for six weeks. Roseomonas mucosa can be a cause of endocarditis. The antimicrobial resistance profile of Roseomonas spp suggests that carbapenems, fluoroquinolones or aminoglycosides are the drugs of choice for Roseomonas infections and that infectious diseases involved in cases of Roseomonas infections should be instituted promptly for proper management.
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Lin ZH, Lu YC, Wu KS. Infective Spondylitis with Epidural Abscess Formation Caused by Roseomonas mucosa: A Case Report and Literature Review. Case Rep Infect Dis 2023; 2023:6332814. [PMID: 37261246 PMCID: PMC10228228 DOI: 10.1155/2023/6332814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/28/2023] [Accepted: 05/14/2023] [Indexed: 06/02/2023] Open
Abstract
Roseomonas mucosa (R. mucosa) is a pink-pigmented, aerobic, nonfermentative, slow-growing Gram-negative coccus typically isolated from the natural environment, human skin, and hospital environment. This pathogen, in most circumstances, leads to infections in immunocompromised hosts, but it may sometimes invade immunocompetent individuals. Bacteraemia is the most common form of infection caused by R. mucosa. In contrast, only two case reports have described R. mucosa-related epidural abscess formation and infective spondylitis. In this case report, we shared the history and treatment experience of a 76-year-old female who was diagnosed with infective spondylitis and epidural abscess caused by R. mucosa. She received a local transdermal injection into the lower back to relieve her back pain two months before symptom onset, which was considered to be associated with this infection episode. After admission to the hospital, neurosurgeons performed emergent decompression and debridement. She was treated with intravenous ceftriaxone for four weeks, followed by oral ciprofloxacin for another eight weeks. The patient recovered well without any sequelae and had no relapse of infection at least six months after the end of treatment. In addition to the case report, we reviewed the literature for reported cases caused by R. mucosa. Our experience suggests that clinicians should include R. mucosa as one of the possible healthcare-associated pathogens among individuals who have undergone transdermal procedures. We believe that this article will help clinicians better recognize R. mucosa infection.
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Affiliation(s)
- Zong-Han Lin
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Yu-Chang Lu
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Kuan-Sheng Wu
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
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Hussain Akbar J, Behbehani J, Karched M. Biofilm growth and microbial contamination of dental unit waterlines at Kuwait University dental center. FRONTIERS IN ORAL HEALTH 2023; 3:1071018. [PMID: 36698450 PMCID: PMC9868918 DOI: 10.3389/froh.2022.1071018] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/05/2022] [Indexed: 01/12/2023] Open
Abstract
Biofilm formation in dental unit waterlines and the resulting microbial contamination of the water in the system has become a significant problem. Contaminated water in the dental units is a major concern in dental clinics due to potential risk of causing infections particularly in elderly and immunocompromised patients. The aim of this study was at first to determine microbial contamination of the dental unit waterlines and then to study the efficacy of a comprehensive disinfection protocol on decreasing the microbial load. Water samples were collected before and after disinfection procedure from handpieces and water storage bottles from the dental units, a small 1-cm tubing was cut from each unit and subjected to microbiological culture on different growth media. Identification of the predominant species was achieved by 16S rRNA gene sequencing. Microbial growth was observed in samples collected from all dental units. Upon disinfection procedure, microbial contamination in the water samples and in the tubing surfaces was significantly reduced (P > 0.05). 16S rRNA gene sequencing revealed the presence of several species belonging to the genera Staphylococcus, Corynebacterium and Roseomonas, some of which are implicated in human infections. Aggravation of the biofilm growth on the tubing surfaces and the microbial contamination in the water can be effectively controlled by implementing appropriate and routine disinfection protocols. This may help protect the dental unit staff and the patients being exposed to the risk of infections.
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Affiliation(s)
- Jaber Hussain Akbar
- Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Kuwait City, Kuwait
| | - Jawad Behbehani
- Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Kuwait City, Kuwait
| | - Maribasappa Karched
- Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Kuwait City, Kuwait,Correspondence: Maribasappa Karched
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He X, Li Z, Li X, Zhao H, Hu Y, Han W, Wang C, Yin C, Chen Y. The fecal microbiota of gravidas with fetal growth restriction newborns characterized by metagenomic sequencing. Curr Res Transl Med 2023; 71:103354. [PMID: 36434943 DOI: 10.1016/j.retram.2022.103354] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/25/2022] [Accepted: 05/30/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Fetal growth restriction (FGR) is a complex obstetric complication with various causes and of great harm. However, the specific pathogenesis of FGR is unclear, which limits its effective treatment. Gut microbiota dysbiosis was found to be important in pathogenesis of various diseases. However, its role in FGR development remains unclear and needs to be clarified. METHODS In our case-control study, we recruited eight FGR and eight control female participants and collected their fecal samples in third trimester before delivery. We performed metagenomic sequencing and bioinformatic analysis to compare the gut microbiota composition and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways between the two groups. RESULTS Our results showed that totally 20 gut microbes were significantly different between two groups (p<0•05), and the correlation analysis found that g__Roseomonas and g__unclassified_f__Propionibacteriaceae were significantly positive correlated with both maternal body mass index (BMI) before delivery, placental weight, and neonatal birth weight (BW) percentile (all p<0•05), while g__Marinisporobacter and g__Sphingomonas were significantly negative correlated with both neonatal BMI and neonatal BW percentile (all p<0•05). Through KEGG pathway analysis, we found that the abundance of the Nitrogen metabolism pathway decreased significantly (p<0•05) whereas the abundance of the Amoebiasis pathway increased significantly in the FGR group (p<0•05). CONCLUSION In this study, we demonstrated that the occurrence of FGR is associated with the change of gut microbiota of pregnant women.
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Affiliation(s)
- Xin He
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China
| | - Zhengpeng Li
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100039, China
| | - Xiaohui Li
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China
| | - Huanying Zhao
- Genomics Research Platform, Core Facilities Center, Capital Medical University, Beijing 100069, China
| | - Yanan Hu
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China
| | - Wenli Han
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China
| | - Chen Wang
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China
| | - Chenghong Yin
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China.
| | - Yi Chen
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, No.251 Yaojiayuan Road, Chaoyang District, Beijing 100026, China.
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Zhao QY, Zhang LY, Fu DY, Xu J, Chen P, Ye H. Lactobacillus spp. in the reproductive system of female moths and mating induced changes and possible transmission. BMC Microbiol 2022; 22:308. [PMID: 36536275 PMCID: PMC9762107 DOI: 10.1186/s12866-022-02724-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The microbiome in the insect reproductive tract is poorly understood. Our previous study demonstrated the presence of Lactobacillus spp. in female moths, but their distribution and function remain unclear. Lactobacillus spp. are known as the 'healthy' vaginal microbiome in humans. RESULTS Here, we studied the microbiome in the reproductive system (RS) and gut of Spodoptera frugiperda using 16S rDNA sequences. The obtained 4315 bacterial OTUs were classified into 61 phyla and 642 genera, with Proteobacteria, Firmicutes and Bacteroidota being the top three dominant phyla and Enterococcus and Asaia being dominant genera in most samples. Mating dramatically increased the abundance of pathogens or pathogenic functions in the gut, while in the RS, the change range was trivial. Taxonomy assignment identified thirteen Lactobacillus spp. in S. frugiperda, with Lactobacillus crustorum and Lactobacillus murinus showing high abundance. Three species found in S. frugiperda, namely L. reuteri, L. plantarum and L. brevis, have also been identified as human 'healthy' vaginal bacterial species. Lactobacillus spp. showed higher abundance in the RS of virgin females and lower abundance in the RS of virgin males and the gut of virgin females. Mating reduced their abundance in the RS of females but increased their abundance in the RS of males, especially in males mated with multiple females. The RS of virgin females and of multiple mated males were very similar in terms of composition and abundance of Lactobacillus species, with Lactobacillus crustorum showing much higher abundance in both tissues, potentially due to sexual transmission. CONCLUSIONS Lactobacillus spp. showed high abundance and diversity in the RS of female moths. The higher abundance of Lactobacillus spp. in the RS of female moths and the similarity of Lactobacillus species in female moths with human 'healthy' vaginal Lactobacillus spp. suggest that these bacterial strains are also an important microbiome in the RS of female moths.
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Affiliation(s)
- Qing-Yi Zhao
- grid.412720.20000 0004 1761 2943Yunnan Academy of Biodiversity, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China ,grid.412720.20000 0004 1761 2943Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China
| | - Luo-Yan Zhang
- grid.412720.20000 0004 1761 2943Yunnan Academy of Biodiversity, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China
| | - Da-Ying Fu
- grid.412720.20000 0004 1761 2943Yunnan Academy of Biodiversity, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China
| | - Jin Xu
- grid.412720.20000 0004 1761 2943Yunnan Academy of Biodiversity, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China ,grid.412720.20000 0004 1761 2943Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Bailong Road 300#, Kunming, 650224 China
| | - Peng Chen
- grid.464490.b0000 0004 1798 048XYunnan Academy of Forestry and Grassland, Lanan Road 2#, Kunming, 650201 China
| | - Hui Ye
- grid.440773.30000 0000 9342 2456School of Ecology and Environment, Yunnan University, Cuihu North Road 2#, Kunming, 650091 China
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Hooper MJ, LeWitt TM, Veon FL, Pang Y, Chlipala GE, Feferman L, Green SJ, Sweeney D, Bagnowski KT, Burns MB, Seed PC, Guitart J, Zhou XA. Nasal Dysbiosis in Cutaneous T-Cell Lymphoma Is Characterized by Shifts in Relative Abundances of Non- Staphylococcus Bacteria. JID INNOVATIONS 2022; 2:100132. [PMID: 36161104 PMCID: PMC9500465 DOI: 10.1016/j.xjidi.2022.100132] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 12/26/2022] Open
Abstract
The nasal microbiome of patients with cutaneous T-cell lymphoma (CTCL) remains unexplored despite growing evidence connecting nasal bacteria to skin health and disease. Nasal swabs from 45 patients with CTCL (40 with mycosis fungoides, 5 with Sézary syndrome) and 20 healthy controls from the same geographical region (Chicago Metropolitan Area, Chicago, IL) were analyzed using sequencing of 16S ribosomal RNA and tuf2 gene amplicons. Nasal α-diversity did not differ between mycosis fungoides/Sézary syndrome and healthy controls (Shannon index, genus level, P = 0.201), but distinct microbial communities were identified at the class (R2 = 0.104, P = 0.023) and order (R2 = 0.0904, P = 0.038) levels. Increased relative abundance of the genera Catenococcus, Vibrio, Roseomonas, Acinetobacter, and unclassified Clostridiales was associated with increased skin disease burden (P < 0.005, q < 0.05). Performed to accurately resolve nasal Staphylococcus at the species level, tuf2 gene amplicon sequencing revealed no significant differences between mycosis fungoides/Sézary syndrome and healthy controls. Although S. aureus has been shown to worsen CTCL through its toxins, no increase in the relative abundance of this taxon was observed in nasal samples. Despite the lack of differences in Staphylococcus, the CTCL nasal microbiome was characterized by shifts in numerous other bacterial taxa. These data add to our understanding of the greater CTCL microbiome and provide context for comprehending nasal-skin and host‒tumor‒microbial relationships.
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Affiliation(s)
- Madeline J. Hooper
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Tessa M. LeWitt
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Francesca L. Veon
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Yanzhen Pang
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - George E. Chlipala
- Research Informatics Core, Research Resources Center, University of Illinois Chicago, Chicago, Illinois, USA
| | - Leo Feferman
- Research Informatics Core, Research Resources Center, University of Illinois Chicago, Chicago, Illinois, USA
| | - Stefan J. Green
- Rush Genomics and Microbiome Core Facility, Rush University Medical Center, Chicago, Illinois, USA
| | - Dagmar Sweeney
- Genome Research Core, Genome Research Division, Research Resources Center, University of Illinois Chicago, Chicago, Illinois, USA
| | - Katherine T. Bagnowski
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michael B. Burns
- Department of Biology, Loyola University Chicago, Chicago, Illinois, USA
| | - Patrick C. Seed
- Division of Pediatric Infectious Diseases, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
| | - Joan Guitart
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Xiaolong A. Zhou
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Peng M, Wang C, Wang Z, Huang X, Zhou F, Yan S, Liu X. Differences between the effects of plant species and compartments on microbiome composition in two halophyte Suaeda species. Bioengineered 2022; 13:12475-12488. [PMID: 35593105 PMCID: PMC9275862 DOI: 10.1080/21655979.2022.2076009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Root-related or endophytic microbes in halophytes play an important role in adaptation to extreme saline environments. However, there have been few comparisons of microbial distribution patterns in different tissues associated with halophytes. Here, we analyzed the bacterial communities and distribution patterns of the rhizospheres and tissue endosphere in two Suaeda species (S. salsa and S. corniculata Bunge) using the 16S rRNA gene sequencing. The results showed that the bacterial abundance and diversity in the rhizosphere were significantly higher than that of endophytic, but lower than that of bulk soil. Microbial-diversity analysis showed that the dominant phyla of all samples were Proteobacteria, Actinobacteria, Bacteroidetes, Acidobacteria and Firmicutes, among which Proteobacteria were extremely abundant in all the tissue endosphere. Heatmap and Linear discriminant analysis Effect Size (LEfSe) results showed that there were notable differences in microbial community composition related to plant compartments. Different networks based on plant compartments exhibited distinct topological features. Additionally, the bulk soil and rhizosphere networks were more complex and showed higher centrality and connectedness than the three endosphere networks. These results strongly suggested that plant compartments, and not species, affect microbiome composition.
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Affiliation(s)
- Mu Peng
- College of Biological Science and Technology, Hubei Minzu University, Hubei, China.,College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Chao Wang
- Zibo Academy of Agricultural Sciences, Zibo, China
| | - Zhiyong Wang
- College of Biological Science and Technology, Hubei Minzu University, Hubei, China
| | - Xiufang Huang
- College of Biological Science and Technology, Hubei Minzu University, Hubei, China
| | - Fangzhen Zhou
- College of Biological Science and Technology, Hubei Minzu University, Hubei, China
| | - Shaopeng Yan
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Xiaopeng Liu
- College of Biological Science and Technology, Hubei Minzu University, Hubei, China
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10
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Spindel J, Grigorov M, Baker M, Marsano L. Cardiac tamponade due to perforation of a Roseomonas mucosa pyogenic hepatic abscess as initial presentation of hepatoid carcinoma. BMJ Case Rep 2022; 15:e248947. [PMID: 35304358 PMCID: PMC8935167 DOI: 10.1136/bcr-2022-248947] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2022] [Indexed: 11/03/2022] Open
Abstract
Hepatic abscesses can rarely cause pericardial disease by erosion into the pericardial space and present with haemodynamic instability due cardiac tamponade. While rare, these dramatic presentations are more often due to amoebic abscesses than bacterial abscesses. Importantly, a cause must be found for any cryptogenic hepatic abscess regardless of presentation, as there is a high association with underlying malignancy. We report a previously healthy man in his 30s who presented with cardiac tamponade from perforation of a Roseomonas mucosa pyogenic hepatic abscess into the pericardium in the absence of bacteremia and biliary disease. One year later, he was found to have diffusely metastatic hepatoid carcinoma.
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Affiliation(s)
- Jeffrey Spindel
- Internal Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Mladen Grigorov
- Internal Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Molly Baker
- Internal Medicine and Pediatrics, University of Louisville, Louisville, Kentucky, USA
| | - Luis Marsano
- Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, Kentucky, USA
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Zhu W, Zhou J, Lu S, Yang J, Lai XH, Jin D, Pu J, Huang Y, Liu L, Li Z, Xu J. Isolation and characterization of tick-borne Roseomonas haemaphysalidis sp. nov. and rodent-borne Roseomonas marmotae sp. nov. J Microbiol 2021; 60:137-146. [PMID: 34826100 PMCID: PMC8622105 DOI: 10.1007/s12275-022-1428-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/02/2022]
Abstract
Four novel Gram-negative, mesophilic, aerobic, motile, and cocci-shaped strains were isolated from tick samples (strains 546T and 573) and respiratory tracts of marmots (strains 1318T and 1311). The 16S rRNA gene sequencing revealed that strains 546T and 573 were 97.8% identical to Roseomonas wenyumeiae Z23T, whereas strains 1311 and 1318T were 98.3% identical to Roseomonas ludipueritiae DSM 14915T. In addition, a 98.0% identity was observed between strains 546T and 1318T. Phylogenetic and phylogenomic analyses revealed that strains 546T and 573 clustered with R. wenyumeiae Z23T, whereas strains 1311 and 1318T grouped with R. ludipueritiae DSM 14915T. The average nucleotide identity between our isolates and members of the genus Roseomonas was below 95%. The genomic G+C content of strains 546T and 1318T was 70.9% and 69.3%, respectively. Diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) were the major polar lipids, with Q-10 as the predominant respiratory quinone. According to all genotypic, phenotypic, phylogenetic, and phylogenomic analyses, the four strains represent two novel species of the genus Roseomonas, for which the names Roseomonas haemaphysalidis sp. nov. and Roseomonas marmotae sp. nov. are proposed, with 546T (= GDMCC 1.1780T = JCM 34187T) and 1318T (= GDMCC 1.1781T = JCM 34188T) as type strains, respectively.
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Affiliation(s)
- Wentao Zhu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Juan Zhou
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Shan Lu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China.,Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, P. R. China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, 100730, P. R. China
| | - Jing Yang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China.,Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, P. R. China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, 100730, P. R. China
| | - Xin-He Lai
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Dong Jin
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China.,Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, P. R. China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, 100730, P. R. China
| | - Ji Pu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Yuyuan Huang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Liyun Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Zhenjun Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China
| | - Jianguo Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, P. R. China. .,Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, P. R. China. .,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, 100730, P. R. China.
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12
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Pistone D, Meroni G, Panelli S, D’Auria E, Acunzo M, Pasala AR, Zuccotti GV, Bandi C, Drago L. A Journey on the Skin Microbiome: Pitfalls and Opportunities. Int J Mol Sci 2021; 22:9846. [PMID: 34576010 PMCID: PMC8469928 DOI: 10.3390/ijms22189846] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 12/22/2022] Open
Abstract
The human skin microbiota is essential for maintaining homeostasis and ensuring barrier functions. Over the years, the characterization of its composition and taxonomic diversity has reached outstanding goals, with more than 10 million bacterial genes collected and cataloged. Nevertheless, the study of the skin microbiota presents specific challenges that need to be addressed in study design. Benchmarking procedures and reproducible and robust analysis workflows for increasing comparability among studies are required. For various reasons and because of specific technical problems, these issues have been investigated in gut microbiota studies, but they have been largely overlooked for skin microbiota. After a short description of the skin microbiota, the review tackles methodological aspects and their pitfalls, covering NGS approaches and high throughput culture-based techniques. Recent insights into the "core" and "transient" types of skin microbiota and how the manipulation of these communities can prevent or combat skin diseases are also covered. Finally, this review includes an overview of the main dermatological diseases, the changes in the microbiota composition associated with them, and the recommended skin sampling procedures. The last section focuses on topical and oral probiotics to improve and maintain skin health, considering their possible applications for skin diseases.
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Affiliation(s)
- Dario Pistone
- Pediatric Clinical Research Center “Invernizzi”, Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy; (S.P.); (A.R.P.); (G.V.Z.)
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy;
| | - Gabriele Meroni
- Department of Biomedical Surgical and Dental Sciences-One Health Unit, University of Milan, 20133 Milan, Italy;
| | - Simona Panelli
- Pediatric Clinical Research Center “Invernizzi”, Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy; (S.P.); (A.R.P.); (G.V.Z.)
| | - Enza D’Auria
- Department of Pediatrics, Children’s Hospital Vittore Buzzi, University of Milan, 20154 Milan, Italy; (E.D.); (M.A.)
| | - Miriam Acunzo
- Department of Pediatrics, Children’s Hospital Vittore Buzzi, University of Milan, 20154 Milan, Italy; (E.D.); (M.A.)
| | - Ajay Ratan Pasala
- Pediatric Clinical Research Center “Invernizzi”, Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy; (S.P.); (A.R.P.); (G.V.Z.)
| | - Gian Vincenzo Zuccotti
- Pediatric Clinical Research Center “Invernizzi”, Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy; (S.P.); (A.R.P.); (G.V.Z.)
- Department of Pediatrics, Children’s Hospital Vittore Buzzi, University of Milan, 20154 Milan, Italy; (E.D.); (M.A.)
| | - Claudio Bandi
- Pediatric Clinical Research Center “Invernizzi”, Department of Biosciences, University of Milan, 20133 Milan, Italy;
| | - Lorenzo Drago
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy;
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13
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Rai A, Jagadeeshwari U, Deepshikha G, Smita N, Sasikala C, Ramana CV. Phylotaxogenomics for the Reappraisal of the Genus Roseomonas With the Creation of Six New Genera. Front Microbiol 2021; 12:677842. [PMID: 34484138 PMCID: PMC8414978 DOI: 10.3389/fmicb.2021.677842] [Citation(s) in RCA: 176] [Impact Index Per Article: 58.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/08/2021] [Indexed: 01/10/2023] Open
Abstract
The genus Roseomonas is a significant group of bacteria which is invariably of great clinical and ecological importance. Previous studies have shown that the genus Roseomonas is polyphyletic in nature. Our present study focused on generating a lucid understanding of the phylogenetic framework for the re-evaluation and reclassification of the genus Roseomonas. Phylogenetic studies based on the 16S rRNA gene and 92 concatenated genes suggested that the genus is heterogeneous, forming seven major groups. Existing Roseomonas species were subjected to an array of genomic, phenotypic, and chemotaxonomic analyses in order to resolve the heterogeneity. Genomic similarity indices (dDDH and ANI) indicated that the members were well-defined at the species level. The Percentage of Conserved Proteins (POCP) and the average Amino Acid Identity (AAI) values between the groups of the genus Roseomonas and other interspersing members of the family Acetobacteraceae were below 65 and 70%, respectively. The pan-genome evaluation depicted that the pan-genome was an open type and the members shared 958 core genes. This claim of reclassification was equally supported by the phenotypic and chemotaxonomic differences between the groups. Thus, in this study, we propose to re-evaluate and reclassify the genus Roseomonas and propose six novel genera as Pararoseomonas gen. nov., Falsiroseomonas gen. nov., Paeniroseomonas gen. nov., Plastoroseomonas gen. nov., Neoroseomonas gen. nov., and Pseudoroseomonas gen. nov.
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Affiliation(s)
- Anusha Rai
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Uppada Jagadeeshwari
- Bacterial Discovery Laboratory, Centre for Environment, Institute of Science and Technology (IST), Jawaharlal Nehru Technological (JNT) University Hyderabad, Hyderabad, India
| | - Gupta Deepshikha
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Nandardhane Smita
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Chintalapati Sasikala
- Bacterial Discovery Laboratory, Centre for Environment, Institute of Science and Technology (IST), Jawaharlal Nehru Technological (JNT) University Hyderabad, Hyderabad, India
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Abstract
The skin microbiome is an ecosystem comprised of a multitude of microbial species interacting with their surroundings, including other microbes and host epithelial and immune cells. These interactions are the basis of important roles within the skin microbiome that provide benefit to the host, boosting multiple aspects of barrier function, a critical function of this essential organ. However, with reward always comes risk; resident skin microbes function in a context-dependent manner, set on the backdrop of a dynamic host and microbial milieu. Here, we discuss the reward of hosting a microbial ecosystem on the skin, including protection from pathogens and tuning of the skin microenvironment. We also give consideration to how these skin residents, often termed "commensals" can cause disorder, damage, and promote skin disease.
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Affiliation(s)
- Laurice Flowers
- Department of Dermatology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
| | - Elizabeth A Grice
- Department of Dermatology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
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15
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Peritonitis caused by Roseomonas mucosa after ventriculoperitoneal shunt revision: a case report. Acta Neurochir (Wien) 2020; 162:2459-2462. [PMID: 32535796 DOI: 10.1007/s00701-020-04449-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 06/04/2020] [Indexed: 10/24/2022]
Abstract
Ventriculoperitoneal shunt (VPS) is an adequate treatment for congenital hydrocephalus or chronic hydrocephalus in adults. Yet, it is a surgery associated with a significant rate of complications amongst neurosurgical procedures, with frequent shunt obstructions and infections. We report the first-ever case of peritonitis caused by Roseomonas mucosa, shortly after the revision of a VPS ventricular catheter. Hardware removal and proper antibiotic therapy led to the patient's recovery. Roseomonas mucosa is an opportunistic skin pathogen with an antibiotic resistance profile to many beta-lactamines and a tropism for indwelling catheters and post-operative period. Nowadays, it should be taken into account in case of infection of indwelling catheters and for some implantable medical devices.
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Ioannou P, Mavrikaki V, Kofteridis DP. Roseomonas species infections in humans: a systematic review. J Chemother 2020; 32:226-236. [PMID: 32619387 DOI: 10.1080/1120009x.2020.1785742] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/20/2020] [Accepted: 06/17/2020] [Indexed: 10/23/2022]
Abstract
Roseomonas species have been recognized to cause infections in immunocompromised individuals. The purpose of this study was to systemically review all published cases of Roseomonas infections in humans and describe the epidemiology, microbiology, antimicrobial susceptibility, treatment and outcomes of these infections in humans. We performed a systematic review of PubMed (through 20th Octrober 2019) for studies providing epidemiological, clinical, microbiological as well as treatment data and outcomes of Roseomonas species infections. A total of 37 studies, containing data of 99 patients, were included in the analysis. The most common Roseomonas infections were those of the bloodstream in 74.7% (74 patients), musculoskeletal infections in 8.1% (8 patients), skin and soft tissue infections (SSTIs) and peritoneal dialysis-associated peritonitis in 6.1% (6 patients) each. Epidemiology of these infections differed, with bacteremias being more prevalent in patients with malignancy and central venous lines, musculoskeletal infections being more prevalent after orthopedic surgery, and SSTIs occurring without any reported underlying cause. Resistance to beta-lactams was very high with penicillin, piperacillin/tazobactam resistance and cephalosporin resistance at 96.6%, 90.7% and 77.8% respectively, while quinolone resistance was 9.1%. Quinolones, carbapenems and cephalosporins are the most common agents used for treatment, irrespectively of the infection site. Overall mortality was 3% (3 patients), with the mortality attributed to Roseomonas being at 1% (1 patient).
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Affiliation(s)
- Petros Ioannou
- Department of Internal Medicine & Infectious Diseases, University Hospital of Heraklion, Heraklion, Greece
| | - Vasiliki Mavrikaki
- Department of Internal Medicine & Infectious Diseases, University Hospital of Heraklion, Heraklion, Greece
| | - Diamantis P Kofteridis
- Department of Internal Medicine & Infectious Diseases, University Hospital of Heraklion, Heraklion, Greece
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17
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Ai L, Huang H, Wu Z, Liu P, Huang J, Chen Y. Chronic suppurative otitis media due to Streptomyces cacaoi, the second case report in human infection. BMC Infect Dis 2020; 20:499. [PMID: 32652948 PMCID: PMC7353713 DOI: 10.1186/s12879-020-05222-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 07/02/2020] [Indexed: 11/17/2022] Open
Abstract
Background Streptomyces cacaoi, Gram-positive, branched, filamentous bacillus forms without fragmentation, are saprophytic soil organisms rarely known to cause invasive infections other than mycetoma. Here we describe a case of chronic suppurative otitis media caused by Streptomyces cacaoi in a patient with hyperlipidemia in China. Case presentation A 62-year-old female patient with hyperlipidemia suffered chronic suppurative otitis media caused by Streptomyces cacaoi. She had a favorable outcome with a 4-week course of ofloxacin ear drops. Conclusions Streptomyces cacaoi is rarely reported to cause human infection. The introduction of molecular techniques improves the ability to identify rare species such as Streptomyces considerably. We report the case improve our ability to identify this pathogen and expand the range of known bacterial causes of human infection.
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Affiliation(s)
- Lu Ai
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Han Huang
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Zhongwen Wu
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Pingjuan Liu
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Jianyu Huang
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Yili Chen
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China.
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A nosocomial cluster of Roseomonas mucosa bacteremia possibly linked to contaminated hospital environment. J Infect Chemother 2020; 26:802-806. [PMID: 32265107 DOI: 10.1016/j.jiac.2020.03.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/25/2020] [Accepted: 03/11/2020] [Indexed: 12/14/2022]
Abstract
Roseomonas, a genus of pink-pigmented glucose non-fermentative bacteria, has been associated with various primary and hospital-acquired human infections; however, to our knowledge, its nosocomial transmission has never been reported. Clinical and epidemiological investigations were carried out after two cases of R. mucosa bacteremia occurred in our hospital in 2018. Environmental samples were taken of environmental surfaces prone to water contamination in the wards and cultured. The two clinical isolates and all environmental isolates that showed growth of pink colonies were identified using matrix-assisted laser desorption/ionization time of flight mass spectrometry and 16S rRNA gene sequencing. Pulse-field gel electrophoresis (PFGE) was performed and fingerprinting software was used to analyze the DNA restriction patterns and determine their similarity. Two patients who developed R. mucosa bacteremia had received care from the same treatment team. Of 126 environmental samples, five showed growth of R. mucosa. Using 80% similarity as the cut-off, PFGE analysis revealed that the isolates from the two patients' blood cultures and three environmental isolates belonged to the same clone. The hospital water environment was contaminated with the same clone of R. mucosa that caused bacteremia in the two patients, suggesting nosocomial transmission linked to contaminated environment. Increased vigilance is needed to monitor the emergence of Roseomonas in healthcare settings.
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