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1.
Int J Syst Evol Microbiol ; 70(10): 5425-5431, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32886594

RESUMO

An actinobacterial strain, designated KUDC0627T, was isolated from rhizospheric soil that contained Elymus tsukushiensis on the Dokdo Islands, Republic of Korea. Cells were Gram-stain-positive, facultative anaerobic, non-motile and non-endospore-forming cocci. Results of phylogenetic analysis based on 16S rRNA gene sequences indicated that strain KUDC0627T belongs to the genus Microlunatus and is most closely related to Microlunatus soli DSM 21800T (98.5 %), Microlunatus endophyticus DSM 100019T (97.7 %) and Microlunatus ginsengisoli Gsoil 633T (96.5 %). The average nucleotide identity scores and average amino acid identity values were all below the 95.0 % cut-off point. In silico DNA-DNA hybridization, using the Genome-to-Genome Distance Calculator, estimated that there is 22.3 % DNA relatedness between KUDC0627T and M. soli DSM 21800T. The genomic DNA G+C content was 66.9 mol%. The major menaquinone was MK-9(H4) and the major diagnostic diamino acid in the cell-wall peptidoglycan was ll-diaminopimelic acid. The polar lipid profile included diphosphatidylglycerol, phosphatidylglycerol, unidentified phospholipids, unidentified glycolipids and unidentified lipids. The major cellular fatty acids were iso-C15 : 0, anteiso-C15 : 0 and iso-C16 : 0. Based on phenotypic, chemotaxonomic, and phylogenetic data, strain KUDC0627T (=KCTC 39853T=JCM 32702T) represents a novel species, for which the name Microlunatus elymi sp. nov. is proposed.


Assuntos
Elymus/microbiologia , Filogenia , Propionibacteriaceae/classificação , Rizosfera , Microbiologia do Solo , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácidos Graxos/química , Hibridização de Ácido Nucleico , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , República da Coreia , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
2.
Int J Syst Evol Microbiol ; 70(7): 4091-4097, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32628103

RESUMO

A Gram-stain-positive anaerobic rod-shaped bacterium, designated strain Marseille-P3275T, was isolated using culturomics from the vaginal discharge of healthy French woman. Marseille-P3275T was non-motile and did not form spores. Cells had neither catalase nor oxidase activity. The major fatty acids were C16 : 0 (29 %), C18:1ω9 (18 %), and iso-C15 : 0 (17 %). The genomic DNA G+C content was 50.64 mol%. The phylogenetic analysis based on 16S rRNA gene sequence indicated that Marseille-P3275T was related to members of the family Propionibacteriaceae (between 90.32-92.92 % sequence similarity) with formation of a clade with the monospecific genus Propionimicrobium (type species Propionimicrobium lymphophilum). On the basis of these phylogenetic and phenotypic differences, Marseille-P3275T was classified in a novel genus, Vaginimicrobium, as Vaginimicrobium propionicum gen. nov., sp. nov. The type strain is Marseille-P3275T (=CSUR P3275T=CECT 9677T).


Assuntos
Bactérias Anaeróbias/classificação , Filogenia , Propionibacteriaceae/classificação , Descarga Vaginal/microbiologia , Bactérias Anaeróbias/isolamento & purificação , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácidos Graxos/química , Feminino , França , Humanos , Propionatos , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA
3.
Bone Joint J ; 102-B(7_Supple_B): 52-56, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32600208

RESUMO

AIMS: Of growing concern in arthroplasty is the emergence of atypical infections, particularly Cutibacterium (formerly Propionibacterium) sp. infections. Currently, the dermal colonization rate of Cutibacterium about the hip is unknown. Therefore, the aim of this study was to investigate colonization rates of Cutibacterium sp. at locations approximating anterior and posterolateral approaches to the hip joint. METHODS: For this non-randomized non-blinded study, 101 adult patients scheduled for hip or knee surgery were recruited. For each, four 3 mm dermal punch biopsies were collected after administration of anaesthesia, but prior to antibiotics. Prebiopsy skin preparation consisted of a standardized preoperative 2% chlorhexidine skin cleansing protocol and an additional 70% isopropyl alcohol mechanical skin scrub immediately prior to biopsy collection. Two skin samples 10 cm apart were collected from a location approximating a standard direct anterior skin incision, and two samples 10 cm apart were collected from a lateral skin incision (suitable for posterior, direct-lateral, or anterolateral approaches). Samples were cultured for two weeks using a protocol optimized for Cutibacterium. RESULTS: A total of 23 out of 404 cultures (collected from 101 patients) were positive for a microorganism, with a total of 22 patients having a positive culture (22%). Overall, 15 of the cultures in 14 patients were positive for Cutibacterium sp. (65%), of which Cutibacterium acnes comprised the majority (n = 13; 87%). Other isolated microorganisms include coagulase-negative Staphylococcus (n = 6), Clostridium (n = 1), and Corynebacterium (n = 1). Of all positive cultures, 15 were obtained from the anterior location (65%), of which seven (60%) were from the most proximal biopsy location. However, these findings were not statistically significant (anterior vs lateral, p = 0.076; proximal vs distal, p =0.238). CONCLUSION: Approximately 14% (14/101) of the patients demonstrated a positive Cutibacterium colonization about the hip, the majority anteriorly. Given the high colonization rate of Cutibacterium, alternative skin preparations for total hip arthroplasty should be considered. Cite this article: Bone Joint J 2020;102-B(7 Supple B):52-56.


Assuntos
Quadril/microbiologia , Propionibacteriaceae/isolamento & purificação , Pele/microbiologia , Coxa da Perna/microbiologia , Adulto , Idoso , Artroplastia de Quadril , Biópsia , Clostridium/isolamento & purificação , Corynebacterium/isolamento & purificação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Staphylococcus/isolamento & purificação
4.
Int J Syst Evol Microbiol ; 70(7): 4298-4304, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32589569

RESUMO

A novel, facultatively anaerobic actinobacterium, designated strain CBA3103T, was isolated from sediment of the Geum River in South Korea. Phylogenetic analysis indicated that strain CBA3103T is most closely related to Raineyella antarctica LZ-22T (98.47 % 16S rRNA gene sequence similarity). The genome of strain CBA3103T was 3 649 865 bp with a DNA G+C content of 69.6 mol%. The average nucleotide identity value between strain CBA3103T and R. antarctica LZ-22T was 79.22 %. Cells of strain CBA3103T were Gram-positive, rod-shaped, 0.6-0.9 µm wide and 1.4-2.4 µm long. Growth occurred at 15-40 °C (optimum, 35 °C), at pH 6.0-7.0 (optimum, pH 7.0) and with 0-2 % NaCl (w/v) (optimum, 0-1 %, w/v). The major cellular fatty acids in strain CBA3103T were anteiso-C15 : 0, anteiso-C15 : 1 A and iso-C14 : 0. The major respiratory quinone was menaquinone-9(H4). The polar lipids of strain CBA3103T were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, five unidentified glycolipids and three unidentified phospholipids. Based on the genotypic, phenotypic and chemotaxonomic analyses, strain CBA3103T represents a novel species of the genus Raineyella, for which the name Raineyella fluvialis sp. nov. (type strain CBA3103T=KACC 21446T=DSM 110288T) is proposed.


Assuntos
Sedimentos Geológicos , Filogenia , Propionibacteriaceae/classificação , Rios/microbiologia , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácidos Graxos/química , Glicolipídeos/química , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , República da Coreia , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
5.
Int J Syst Evol Microbiol ; 70(4): 2457-2462, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32559834

RESUMO

An anaerobic and aerotolerant bacterium, strain M12T, was isolated from the meibum of inflamed human meibomian glands. Cells of the strain was Gram-stain-positive, non-spore-forming and non-motile rods. Growth on trypticase soy agar plates supplemented with 5 % sheep blood was fastest at 30-37 °C under anaerobic conditions. The 16S rRNA gene sequence of the strain revealed that it belongs to the genus Cutibacterium with a 98.0 % similarity value to the closest species, Cutibacterium acnes. Genome analysis of the strain with type strains of the other Cutibacterium species resulted in digital DNA-DNA hybridization values of 32.3-22.3% and average nucleotide identity (OrthoANI) values of 86.7-73.6 %. Biochemical and physiological analyses using API rapid ID 32A and API Coryne kits revealed relatively low reactivity of the strain compared with C. acnes and Cutibacterium namnetense. The most abundant major cellular fatty acid was iso-C15 : 0. Fermentation end-products from glucose were propionate, lactate, succinate and acetate. The diagnostic diamino acid of the peptidoglycan was meso-diaminopimelic acid. Major menaquinones were MK-9(H4), MK-9(H2) and MK-9. The major peaks of the MALDI-TOF mass spectrometry spectrum were at 3493, 3712, 6986 and 7424 Da. The DNA G+C content was 59.9 mol%. Based on these findings, we propose a novel species, Cutibacterium modestum. The type strain of C. modestum is M12T (=JCM 33380T=DSM 109769T). On the basis of further genomic analysis, we also provide emended descriptions of Cutibacterium granulosum (Prévot 1938) Scholz and Kilian 2016 and Cutibacterium namnetense (Aubin et al. 2016) Nouioui et al. 2018.


Assuntos
Glândulas Tarsais/microbiologia , Filogenia , Propionibacteriaceae/classificação , Lágrimas/microbiologia , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácido Diaminopimélico/química , Ácidos Graxos/química , Humanos , Japão , Hibridização de Ácido Nucleico , Peptidoglicano/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
6.
Int J Syst Evol Microbiol ; 70(5): 3179-3185, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32302275

RESUMO

A Gram-stain-positive, aerobic, non-motile and non-spore-forming actinobacterium, designated as F435T, was isolated from soil sample collected from the Cholistan Desert, Pakistan. The taxonomic position of the strain was established by using a polyphasic taxonomic approach. The cells were coccoid-shaped and found in single or arrangement of pairs. The novel strain grew at 15‒37 °C (optimum, 25‒30 °C), pH 7‒11 (optimum, pH 7-8) and in the presence of 0‒8% (w/v) NaCl (optimum, 0 %). Results of blast analysis based on 16S rRNA gene sequences showed that Auraticoccus monumenti MON 2.2T was its closest relative with 97.4 % similarity followed by Desertihabitans aurantiacus CPCC 204711T (95.2 %). In phylogenetic trees, strain F435T formed a robust cluster with the only member of the genus Auraticoccus. The peptidoglycan isomer present in the cell wall was ll-diaminopimelic acid. The major fatty acid was determined to be anteiso-C15 : 0. Characteristic polar lipids of the strain were diphosphatidylglycerol, phosphatidylglycerol, phosphoglycolipids and glycolipids. The predominant menaquinone was MK-9(H4). The genomic G+C content was calculated as 73.5 mol%. The digital DNA-DNA hybridization (GGDC) and average nucleotide identity (ANI) values between strain F435T and A. monumenti MON 2.2T were 24.6 and 81.8 %, respectively. Based on the results of phenotypic, chemotaxonomic, phylogenetic and phylogenomic analyses, strain F435T represents a novel specie of the genus Auraticoccus, for which the name Auraticoccus cholistanensis sp. nov. is proposed. The type strain is F435T (=JCM 33648T=CGMCC 1.17443T). The description of the genus Auraticoccus has also been emended.


Assuntos
Clima Desértico , Filogenia , Propionibacteriaceae/classificação , Microbiologia do Solo , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácido Diaminopimélico/química , Ácidos Graxos/química , Glicolipídeos/química , Hibridização de Ácido Nucleico , Paquistão , Peptidoglicano/química , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
7.
Sci Rep ; 10(1): 6662, 2020 04 20.
Artigo em Inglês | MEDLINE | ID: mdl-32313127

RESUMO

The environment affects the composition and function of soil microbiome, which indirectly influences the quality of plants. In this study, 16S amplicon sequencing was used to reveal the differences in soil microbial community composition of Cistanche deserticola in three ecotypes (saline-alkali land, grassland and sandy land). Through the correlation analysis of microbial community abundance, phenylethanoid glycoside contents and ecological factors, the regulatory relationship between microbial community and the quality variation of C. deserticola was expounded. The metabolic function profile of soil microbiome was predicted using Tax4Fun. Data showed that the soil microbial communities of the three ecotypes were significantly different (AMOVA, P < 0.001), and the alpha diversity of grassland soil microbial community was the highest. Core microbiome analysis demonstrated that the soil microbial communities of C. deserticola were mostly have drought, salt tolerance, alkali resistance and stress resistance, such as Micrococcales and Bacillales. The biomarkers, namely, Oceanospirillales (saline-alkali land), Sphingomonadales (grassland) and Propionibacteriales (sandy land), which can distinguish three ecotype microbial communities, were excavated through LEfSe and random forest. Correlation analysis results demonstrated that 2'-acetylacteoside is positively correlated with Oceanospirillales in saline-alkali land soil. The metabolic function profiles displayed highly enriched metabolism (carbohydrate and amino acid metabolisms) and environmental information processing (membrane transport and signal transduction) pathways. Overall, the composition and function of soil microbiomes were found to be important factors to the quality variation of C. deserticola in different ecotypes. This work provided new insight into the regulatory relationship amongst the environment, soil microbial community and plant quality variation.


Assuntos
Bacillales/classificação , Cistanche/microbiologia , Micrococcaceae/classificação , Oceanospirillaceae/classificação , Propionibacteriaceae/classificação , Microbiologia do Solo , Sphingomonadaceae/classificação , Bacillales/genética , Bacillales/isolamento & purificação , Técnicas de Tipagem Bacteriana , China , Cistanche/fisiologia , Secas , Ecótipo , Variação Genética , Glicosídeos/biossíntese , Pradaria , Concentração de Íons de Hidrogênio , Micrococcaceae/genética , Micrococcaceae/isolamento & purificação , Oceanospirillaceae/genética , Oceanospirillaceae/isolamento & purificação , Filogenia , Propionibacteriaceae/genética , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Salinidade , Tolerância ao Sal/genética , Areia/microbiologia , Solo/química , Sphingomonadaceae/genética , Sphingomonadaceae/isolamento & purificação
8.
Int J Syst Evol Microbiol ; 70(4): 2186-2193, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32043954

RESUMO

Eight facultatively anaerobic rod-shaped bacteria were isolated from raw milk and two other dairy products. Results of phylogenetic analyses based on 16S rRNA gene sequences showed that the isolates are placed in a distinct lineage within the family Propionibacteriaceae with Propioniciclava sinopodophylli and Propioniciclava tarda as the closest relatives (94.6 and 93.5 % similarity, respectively). The cell-wall peptidoglycan contained meso-diaminopimelic acid, alanine and glutamic acid and was of the A1γ type (meso-DAP-direct). The major cellular fatty acid was anteiso-C15 : 0 and the major polar lipids were diphosphatidylglycerol, phosphatidyglycerol and three unidentified glycolipids. The quinone system contained predominantly menaquinone MK-9(H4). The G+C content of the genomic DNA of strain VG341T was 67.7 mol%. The whole-cell sugar pattern contained ribose, rhamnose, arabinose and galactose. On the basis of phenotypic and genetic data, eight strains (VG341T, WS4684, WS4769, WS 4882, WS4883, WS4901, WS4902 and WS4904) are proposed to be classified as members of a novel species in a new genus of the family Propionibacteriaceae, for which the name Brevilactibacter flavus gen. nov., sp. nov. is proposed. The type strain is VG341T (=WS4900T=DSM 100885T=LMG 29089T) and seven additional strains are WS4684, WS4769, WS4882, WS4883, WS4901, WS4902 and WS4904. Furthermore, we propose the reclassification of P. sinopodophylli as Brevilactibacter sinopodophylli comb. nov.


Assuntos
Laticínios/microbiologia , Leite/microbiologia , Filogenia , Propionibacteriaceae/classificação , Animais , Técnicas de Tipagem Bacteriana , Composição de Bases , Parede Celular/química , DNA Bacteriano/genética , Ácido Diaminopimélico/química , Ácidos Graxos/química , Microbiologia de Alimentos , Alemanha , Glicolipídeos/química , Peptidoglicano/química , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
9.
J Shoulder Elbow Surg ; 29(6): 1177-1187, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31668686

RESUMO

BACKGROUND: Cutibacterium are the most common cause of periprosthetic shoulder infections, as defined by ≥2 deep cultures. Established Cutibacterium periprosthetic infections cannot be resolved without prosthesis removal. However, the decision for implant removal must be made from an assessment of infection risk before the results of intraoperative cultures are finalized. We hypothesized that the risk for a Cutibacterium infection is associated with characteristics that are available at the time of revision arthroplasty. METHODS: In a retrospective review of 342 patients having prosthetic revisions between 2006 and 2018 for whom definitive deep culture results were available, we used univariate and multivariate analyses to compare the preoperative and intraoperative characteristics of 101 revisions with Cutibacterium periprosthetic infections to the characteristics of 241 concurrent revisions not meeting the definition of infection. RESULTS: Patients with definite Cutibacterium periprosthetic infections were younger (59 ± 10 vs. 64 ± 12, P < .001), were more likely to be male (91% vs. 44%, P < .001), were more likely to have had their index procedure performed for primary osteoarthritis (54% vs. 39%, P = .007), were more likely to be taking testosterone supplements (8% vs. 2%, P = .02), had lower American Society of Anesthesiologists scores (1.9 ± 0.7 vs. 2.3 ± 0.7, P < .001), and had lower body mass indices (29 ± 5 vs. 31 ± 7, P = .005). Patients with definite Cutibacterium periprosthetic infections also had significantly higher preoperative loads of Cutibacterium on their unprepared skin surface (1.7 ± 0.9 vs. 0.4 ± 0.8, P < .001) and were more likely to have the surgical finding of synovitis (41% vs. 16%, P < .001). CONCLUSIONS: The risk of definite Cutibacterium periprosthetic infections is associated with observations that can be made before or at the time of revision arthroplasty.


Assuntos
Artroplastia do Ombro/efeitos adversos , Infecções por Bactérias Gram-Positivas/cirurgia , Propionibacteriaceae/isolamento & purificação , Infecções Relacionadas à Prótese/microbiologia , Infecções Relacionadas à Prótese/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Androgênios/administração & dosagem , Feminino , Infecções por Bactérias Gram-Positivas/microbiologia , Humanos , Masculino , Pessoa de Meia-Idade , Osteoartrite/cirurgia , Reoperação , Estudos Retrospectivos , Fatores Sexuais , Pele/microbiologia , Sinovite/microbiologia , Sinovite/cirurgia , Testosterona/administração & dosagem
10.
Int J Syst Evol Microbiol ; 70(3): 1555-1561, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31860427

RESUMO

A Gram-stain-positive, facultatively anaerobic bacterium, strain JDX10T, was isolated from a soil sample of Fildes Peninsula, Antarctica. Cells of the strain were irregular rod-shaped and non-motile. Cells grew at 4-40 °C (optimum, 28 °C), at pH 6.0-9.0 (optimum, 7.5) and with 0.0-3.0 % (w/v) NaCl (optimum, 1.0 %). According to phylogenetic analysis based on 16S rRNA gene sequences, strain JDX10T was associated with the genus Tessaracoccus, and showed highest similarities to Tessaracoccus rhinocerotis CCTCC AB 2013217T (97.2 %), Tessaracoccus flavescens SST-39T (96.9 %) and Tessaracoccus terricola JCM 32157T (96.9 %). The average nucleotide identity scores of strain JDX10T to T. rhinocerotis CCTCC AB 2013217T and T. bendigoensis JCM 13525T were 74.8 and 73.3 %, respectively and the Genome-to-Genome Distance Calculator scores were 19.2 and 18.7 %, respectively. The major (>10.0 %) cellular fatty acid was anteiso-C15 : 0. The predominant isoprenoid quinone was MK-10(H4). The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and one unidentified glycolipid. The phylogenetic analysis and physiological and biochemical data showed that strain JDX10T should be classified as representing a novel species in the genus Tessaracoccus, for which the name Tessaracoccus antarcticus sp. nov. is proposed. The type strain is JDX10T (=MCCC 1H00351T=KCTC 49242T).


Assuntos
Filogenia , Propionibacteriaceae/classificação , Rodopsina , Microbiologia do Solo , Regiões Antárticas , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácidos Graxos/química , Glicolipídeos/química , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Ubiquinona/análogos & derivados , Ubiquinona/química
11.
Am J Case Rep ; 20: 1961-1965, 2019 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-31884507

RESUMO

BACKGROUND Pseudopropionibacterium propionicum was called Propionibacterium propionicum until a recent taxonomy change in 2016. Diseases caused by P. propionicum resemble actinomycosis and thus differ dramatically from the infectious syndromes caused by common cutaneous Propionibacterium spp. However, if treating physicians are not familiar with P. propionicum and its clinical presentations, it is possible for them to regard it as a skin contaminant such as Cutibacterium acnes (formerly Propionibacterium acnes). CASE REPORT A 71-year-old man with past surgical history of right pneumonectomy was admitted with right chest wall abscess and right empyema. The chest wall abscess was drained surgically, and the empyema was drained via a chest tube. The abscess culture took 5 days to grow beaded branching Gram-positive rods, and 15 days to identify them as P. propionicum. The patient received 17 days of ceftriaxone and 4 weeks of doxycycline. However, he experienced a relapse of the chest wall abscess and right empyema 4 months after discontinuation of doxycycline. Cultures from the chest wall abscess and empyema grew P. propionicum again. We treated him with ceftriaxone for 6 months followed by minocycline for 7 months along with adequate drainage. CONCLUSIONS It is important to recognize that P. propionicum can cause thoracic actinomycosis and will likely require the prolonged treatment course typical for actinomycotic disease, which is 2 to 8 weeks of intravenous antibiotic therapy followed by 6 to 12 months of oral antibiotic therapy.


Assuntos
Abscesso/microbiologia , Actinomicose/microbiologia , Propionibacteriaceae/isolamento & purificação , Doenças Torácicas/microbiologia , Parede Torácica/microbiologia , Actinomicose/diagnóstico , Idoso , Humanos , Masculino
12.
PLoS One ; 14(12): e0225796, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31851674

RESUMO

Dandruff is a skin condition that affects the scalp of up to half the world's population, it is characterised by an itchy, flaky scalp and is associated with colonisation of the skin by Malassezia spp. Management of this condition is typically via antifungal therapies, however the precise role of microbes in the aggravation of the condition are incompletely characterised. Here, a combination of 454 sequencing and qPCR techniques were used to compare the scalp microbiota of dandruff and non-dandruff affected Chinese subjects. Based on 454 sequencing of the scalp microbiome, the two most abundant bacterial genera found on the scalp surface were Cutibacterium (formerly Propionibacterium) and Staphylococcus, while Malassezia was the main fungal inhabitant. Quantitative PCR (qPCR) analysis of four scalp taxa (M. restricta, M. globosa, C. acnes and Staphylococcus spp.) believed to represent the bulk of the overall population was additionally carried out. Metataxonomic and qPCR analyses were performed on healthy and lesional buffer scrub samples to facilitate assessment of whether the scalp condition is associated with differential microbial communities on the sampled skin. Dandruff was associated with greater frequencies of M. restricta and Staphylococcus spp. compared with the healthy population (p<0.05). Analysis also revealed the presence of an unclassified fungal taxon that could represent a novel Malassezia species.


Assuntos
Caspa , Dermatomicoses/microbiologia , Malassezia , Microbiota , Couro Cabeludo/microbiologia , Pele/microbiologia , Adolescente , Adulto , Idoso , China , Caspa/epidemiologia , Caspa/microbiologia , Feminino , Humanos , Malassezia/classificação , Malassezia/isolamento & purificação , Masculino , Pessoa de Meia-Idade , Propionibacteriaceae/isolamento & purificação , Staphylococcus/isolamento & purificação , Adulto Jovem
13.
Int J Syst Evol Microbiol ; 69(8): 2486-2491, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31169487

RESUMO

The taxonomic position of an actinobacterium isolated from a desert soil sample collected from Badain Jaran Desert, designated as CPCC 204711T, was established using a polyphasic approach. Cells of the isolate were Gram-staining-positive, aerobic, non-motile cocci. Good growth was observed at 28 °C (range 20-40 °C), pH 7.0 (range pH 6.0-8.0) and 0-1 % NaCl concentration (range 0-5 %, w/v). Galactose, arabinose and ribose were detected as the sugar compositions in the whole cell hydrolysates. The peptidoglycan type was A3gamma (ll-Dpm-Gly). MK-9(H4) was detected as the predominant menaquinone, and diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, several unidentified glycolipids, and one unidentified amino-glycolipid were detected as the major polar lipids. The predominant fatty acid was anteiso-C15 : 0. The genomic DNA G+C content was 73.1 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CPCC 204711T affiliated to the family Propionibacteriaceae, in which the strain formed a distinct phylogenetic lineage next to the genus Mariniluteicoccus, with the highest 16S rRNA gene sequence similarity of 96.0 % to Mariniluteicoccus endophyticus YIM 2617T. Both phylogenetic analysis and phenotypic characteristics supported that strain CPCC 204711T represents a novel species of a new genus in the family Propionibacteriaceae, for which the name Desertihabitans aurantiacus gen. nov., sp. nov. is proposed, with CPCC 204711T (=KCTC 39977T=DSM 105431T) as the type strain.


Assuntos
Clima Desértico , Filogenia , Propionibacteriaceae/classificação , Microbiologia do Solo , Técnicas de Tipagem Bacteriana , Composição de Bases , Parede Celular/química , China , DNA Bacteriano/genética , Ácido Diaminopimélico/química , Ácidos Graxos/química , Glicolipídeos/química , Peptidoglicano/química , Fosfolipídeos/química , Propionibacteriaceae/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/química
14.
Anaerobe ; 59: 176-183, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31254654

RESUMO

Cutibacterium avidum is a gram-positive anaerobic rod belonging to the cutaneous group of human bacteria with preferential colonization of sweat glands in moist areas. The microorganism rarely cause disease, generally delayed prosthetic joint infections (PJIs). We describe the second case of intraperitoneal abscess by C. avidum after an abdominal surgery in an obese female patient and the first case after a non-prosthetic abdominal surgery due to a highly clindamycin resistant strain in a patient with underling conditions. The patient was successfully treated with surgical drainage and beta-lactam antibiotics. Although rare and apparently non-pathogenic, C. avidum may be involved in infections, especially in some high-risk patients with obesity who have undergone surgical incision involving deep folder of the skin. The microorganism was identified by phenotypic methods, MALDI-TOF MS and 16S rRNA gene sequencing. Susceptibility test should be performed in C. avidum because high level resistance to clindamycin could be present. We present a literature review of C. avidum infections.


Assuntos
Abscesso Abdominal/diagnóstico , Abscesso Abdominal/patologia , Infecções por Bactérias Gram-Positivas/diagnóstico , Infecções por Bactérias Gram-Positivas/patologia , Histerectomia/efeitos adversos , Laparotomia/efeitos adversos , Propionibacteriaceae/isolamento & purificação , Abscesso Abdominal/microbiologia , Antibacterianos/farmacologia , Clindamicina/farmacologia , DNA Bacteriano/química , DNA Bacteriano/genética , DNA Ribossômico/química , DNA Ribossômico/genética , Farmacorresistência Bacteriana , Infecções por Bactérias Gram-Positivas/microbiologia , Humanos , Histerectomia/métodos , Laparotomia/métodos , Obesidade/complicações , Propionibacteriaceae/classificação , Propionibacteriaceae/efeitos dos fármacos , Propionibacteriaceae/genética , RNA Ribossômico 16S/genética , Análise de Sequência de DNA
15.
Dermatology ; 235(4): 287-294, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31112983

RESUMO

BACKGROUND: Cutibacterium acnes has been identified as one of the main triggers of acne. However, increasing knowledge of the human skin microbiome raises questions about the role of other skin commensals, such as Staphylococcus epidermidis, in the physiopathology of this skin disease. SUMMARY: This review provides an overview of current knowledge of the potential role of S. epidermidis in the physiopathology of acne. Recent research indicates that acne might be the result of an unbalanced equilibrium between C. acnes and S. epidermidis,according to dedicated interactions. Current treatments act on C. acnesonly. Other treatment options may be considered, such as probiotics derived from S. epidermidis to restore the naturally balanced microbiota or through targeting the regulation of the host's AMP mediators. Key Messages: Research seems to confirm the beneficial role of S. epidermidis in acne by limiting C. acnes over-colonisation and inflammation.


Assuntos
Acne Vulgar/microbiologia , Infecções por Bactérias Gram-Positivas/fisiopatologia , Fenômenos Microbiológicos , Propionibacteriaceae/patogenicidade , Pele/microbiologia , Staphylococcus epidermidis/fisiologia , Acne Vulgar/etiologia , Acne Vulgar/fisiopatologia , Acne Vulgar/terapia , Infecções por Bactérias Gram-Positivas/complicações , Infecções por Bactérias Gram-Positivas/microbiologia , Interações entre Hospedeiro e Microrganismos/fisiologia , Humanos , Interações Microbianas/fisiologia , Microbiota/fisiologia , Propionibacteriaceae/isolamento & purificação , Infecções Estafilocócicas/complicações , Infecções Estafilocócicas/microbiologia , Infecções Estafilocócicas/fisiopatologia , Staphylococcus epidermidis/isolamento & purificação
16.
J Am Acad Orthop Surg ; 27(14): e633-e640, 2019 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-30520801

RESUMO

Cutibacterium acnes, long thought to be skin flora of pathological insignificance, has seen a surge in interest for its role in spine pathology. C acnes has been identified as a pathogen in native spine infection and osteomyelitis, which has implications in the management compared with more commonly recognized pathogens. In addition, It has also been recognized as a pathogen in postoperative and implant-associated infections. Some evidence exists pointing to C acnes as an unrecognized source of otherwise aseptic pseudarthrosis. Recently, it is hypothesized that low virulent organisms, in particular C acnes, may play a role in degenerative disk disease and the development of Modic end plate changes found in MRI. To this end, controversial implications exist in terms of the use of antibiotics to treat certain patients in the setting of degenerative disk disease. C acnes continues to remain an expanding area of interest in spine pathology, with important implications for the treating spine surgeon.


Assuntos
Infecções por Actinomycetales , Degeneração do Disco Intervertebral/microbiologia , Osteomielite/microbiologia , Propionibacteriaceae , Espondilite/microbiologia , Antibacterianos/uso terapêutico , Humanos , Degeneração do Disco Intervertebral/complicações , Degeneração do Disco Intervertebral/diagnóstico , Degeneração do Disco Intervertebral/terapia , Deslocamento do Disco Intervertebral/complicações , Deslocamento do Disco Intervertebral/diagnóstico , Deslocamento do Disco Intervertebral/microbiologia , Deslocamento do Disco Intervertebral/terapia , Dor Lombar/etiologia , Dor Lombar/terapia , Imagem por Ressonância Magnética , Procedimentos Ortopédicos , Osteomielite/diagnóstico , Osteomielite/terapia , Propionibacteriaceae/isolamento & purificação , Propionibacteriaceae/patogenicidade , Reoperação , Espondilite/diagnóstico , Espondilite/terapia , Virulência
17.
J Am Acad Orthop Surg ; 27(14): 509-518, 2019 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-30575599

RESUMO

Low back pain resulting from intervertebral disk degeneration is a cause of substantial disability and productivity loss. Over the past few years, growing evidence exists which suggests that low-grade bacterial infection, particularly infection with Cutibacterium acnes, may be associated with degenerative disk disease in the lumbar spine. Positive cultures are obtained in approximately 30% of intervertebral disk specimens removed at the time of surgery. In addition, one randomized trial has shown that antibiotic therapy for low back pain in patients with disk degeneration can slow the progression of degeneration and improve pain and disability levels. Although these results are encouraging, the link between infection and disk degeneration remains controversial. Investigators have attempted to address the limitations of clinical research by using translational methods and animal models. These methods have shown that seeding of the disk with bacteria can lead to increased local inflammation and an in vivo phenotype that is similar to human disk degeneration. This review seeks to provide an overview of the clinical, translational, and animal model data linking infection to disk degeneration. We review mechanisms for disk degeneration in the setting of infection and explore areas for future investigation.


Assuntos
Infecções por Bactérias Gram-Positivas , Degeneração do Disco Intervertebral/etiologia , Espondilite/complicações , Espondilite/microbiologia , Animais , Modelos Animais de Doenças , Humanos , Degeneração do Disco Intervertebral/microbiologia , Dor Lombar/etiologia , Vértebras Lombares , Propionibacteriaceae/isolamento & purificação , Índice de Gravidade de Doença
18.
Microbiome ; 6(1): 213, 2018 11 29.
Artigo em Inglês | MEDLINE | ID: mdl-30497517

RESUMO

BACKGROUND: Even though human sweat is odorless, bacterial growth and decomposition of specific odor precursors in it is believed to give rise to body odor in humans. While mechanisms of odor generation have been widely studied in adults, little is known for teenagers and pre-pubescent children who have distinct sweat composition from immature apocrine and sebaceous glands, but are arguably more susceptible to the social and psychological impact of malodor. RESULTS: We integrated information from whole microbiome analysis of multiple skin sites (underarm, neck, and head) and multiple time points (1 h and 8 h after bath), analyzing 180 samples in total to perform the largest metagenome-wide association study to date on malodor. Significant positive correlations were observed between odor intensity and the relative abundance of Staphylococcus hominis, Staphylococcus epidermidis, and Cutibacterium avidum, as well as negative correlation with Acinetobacter schindleri and Cutibacterium species. Metabolic pathway analysis highlighted the association of isovaleric and acetic acid production (sour odor) from enriched S. epidermidis (teen underarm) and S. hominis (child neck) enzymes and sulfur production from Staphylococcus species (teen underarm) with odor intensity, in good agreement with observed odor characteristics in pre-pubescent children and teenagers. Experiments with cultures on human and artificial sweat confirmed the ability of S. hominis and S. epidermidis to independently produce malodor with distinct odor characteristics. CONCLUSIONS: These results showcase the power of skin metagenomics to study host-microbial co-metabolic interactions, identifying distinct pathways for odor generation from sweat in pre-pubescent children and teenagers and highlighting key enzymatic targets for intervention.


Assuntos
Bactérias/classificação , Metagenômica/métodos , Odorantes/análise , Pele/microbiologia , Suor/microbiologia , Ácido Acético/análise , Acinetobacter/classificação , Acinetobacter/isolamento & purificação , Adolescente , Axila/microbiologia , Bactérias/isolamento & purificação , Criança , Feminino , Cabeça/microbiologia , Hemiterpenos , Humanos , Masculino , Pescoço/microbiologia , Ácidos Pentanoicos/análise , Propionibacteriaceae/classificação , Propionibacteriaceae/isolamento & purificação , Puberdade , Análise de Sequência de DNA , Pele/química , Staphylococcus epidermidis/classificação , Staphylococcus epidermidis/isolamento & purificação , Staphylococcus hominis/classificação , Staphylococcus hominis/isolamento & purificação , Enxofre/análise
19.
Int J Med Microbiol ; 308(8): 1027-1035, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30268774

RESUMO

The Gram-positive anaerobic bacterium Cutibacterium acnes is a commensal of the human skin, but also an opportunistic pathogen that contributes to the pathophysiology of the skin disease acne vulgaris. Moreover, C. acnes, in addition to other skin-colonizing bacteria such as S. epidermidis and S. aureus, is an emerging pathogen of implant-associated infections. Notably, C. acnes isolates exhibit marked heterogeneity and can be divided into at least 6 phylotypes by multilocus sequence typing. It is becoming increasingly evident that biofilm formation is a relevant factor for C. acnes virulence, but information on biofilm formation by diverse C. acnes isolates is limited. In this study we performed a first comparative analysis of 58 diverse skin- or implant-isolates covering all six C. acnes phylotypes to investigate biofilm formation dynamics, biofilm morphology and attachment properties to abiotic surfaces. The results presented herein suggest that biofilm formation correlates with the phylotype, rather than the anatomical isolation site. IA1 isolates, particularly SLST sub-types A1 and A2, showed highest biofilm amounts in the microtiter plate assays, followed by isolates of the IC, IA2 and II phylotypes. Microscopic evaluation revealed well-structured three-dimensional biofilms and relatively high adhesive properties to abiotic surfaces for phylotypes IA1, IA2 and IC. Representatives of phylotype III formed biofilms with comparable biomass, but with less defined structures, whereas IB as well as II isolates showed the least complex three-dimensional morphology. Proteinase K- and DNase I-treatment reduced attachment rates of all phylotypes, therefore, indicating that extracellular DNA and proteins are critical for adhesion to abiotic surfaces. Moreover, proteins seem to be pivotal structural biofilm components as mature biofilms of all phylotypes were proteinase K-sensitive, whereas the sensitivity to DNase I-treatment varied depending on the phylotype.


Assuntos
Acne Vulgar/microbiologia , Biofilmes/crescimento & desenvolvimento , Infecções por Bactérias Gram-Positivas/microbiologia , Propionibacteriaceae/crescimento & desenvolvimento , Pele/microbiologia , Aderência Bacteriana/efeitos dos fármacos , Biofilmes/efeitos dos fármacos , Desoxirribonuclease I/farmacologia , Endopeptidase K/farmacologia , Humanos , Viabilidade Microbiana/efeitos dos fármacos , Microscopia de Fluorescência , Compostos Orgânicos/farmacologia , Propionibacteriaceae/efeitos dos fármacos , Propionibacteriaceae/isolamento & purificação
20.
PLoS One ; 13(8): e0202639, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30125299

RESUMO

BACKGROUND: The definition criteria and clinical characteristics of implant-associated infection (IAI) caused by Cutibacterium (formerly Propionibacterium) spp. are poorly known. We analyzed microbiologically proven Cutibacterium orthopedic IAI in a prospective cohort. METHODS: Patients with periprosthetic joint infections (PJI) and fixation device-associated infections (FDAI) caused by Cutibacterium spp. were prospectively included. IAI was defined by significant growth of Cutibacterium spp. and presence of at least one non-microbiological criterion for infection. The McNemar's chi-squared or binomial test was used to compare the performance of diagnostic tests. RESULTS: Of 121 patients with Cutibacterium IAI, 62 patients (51%) had PJI and 59 (49%) had FDAI. 109 infections (90%) were caused by C. acnes and 12 (10%) by C. avidum. The median time from implantation until diagnosis of infection was 15.7 months (interquartile range, 5-46.5 months). Clinical local signs were present in 30 patients (28%) and radiological implant loosening in 64 patients (63%). Culture sensitivity of sonication fluid was 84%, of peri-implant tissue 84% and of synovial or peri-implant fluid 56% after 14 days of incubation. CONCLUSION: Cutibacterium IAI was diagnosed late in the disease course and presented with subtle signs. Prolonged culture incubation and implant sonication improved the poor performance of conventional microbiological tests. Due to lack of reliable diagnostic tests, Cutibacterium remains difficult to detect making the diagnosis challenging.


Assuntos
Artrite Infecciosa/microbiologia , Equipamentos Ortopédicos/microbiologia , Propionibacteriaceae/isolamento & purificação , Infecções Relacionadas à Prótese/microbiologia , Idoso , Artrite Infecciosa/diagnóstico , Artrite Infecciosa/fisiopatologia , Feminino , Humanos , Prótese Articular/microbiologia , Masculino , Pessoa de Meia-Idade , Propionibacteriaceae/patogenicidade , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/fisiopatologia
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