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A C Barretto - One of the best experts on this subject based on the ideXlab platform.
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endocardite infecciosa causada por Eikenella corrodens
Arquivos Brasileiros De Cardiologia, 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Paulo Cesar Morgado, Robinson Tadeu Munhoz, Fernanda E Andretto, A C BarrettoAbstract:The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings1; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 19725. That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis.
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Eikenella corrodens infective endocarditis
Arquivos Brasileiros De Cardiologia, 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Paulo Cesar Morgado, Robinson Tadeu Munhoz, Fernanda E Andretto, Alfredo Jose Mansur, A C BarrettoAbstract:The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings1; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 19725. That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis.
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Endocardite infecciosa causada por Eikenella corrodens Eikenella corrodens infective endocarditis
Sociedade Brasileira de Cardiologia (SBC), 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Fernanda E Andretto, Alfredo Jose Mansur, Paulo Morgado, Robinson Munhoz, A C BarrettoAbstract:Os microorganismos do grupo HACEK (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens e Kingella kingae) são responsáveis por 3% dos casos de endocardites. Eles apresentam propriedades clínicas e microbiológicas semelhantes entre si: são bacilos gram-negativos, isolados mais facilmente em meios aeróbicos, suas culturas necessitam de tempo prolongado de incubação para crescimento (média 3,3 dias) e podem ser considerados como parte da flora normal do trato respiratório superior e da orofaringe1,2. Algumas características foram identificadas nas endocardites por esses agentes, como o quadro clínico insidioso¹, diagnóstico difícil pela natureza fastidiosa e culturas negativas3,4. A endocardite por Eikenella corrodens foi descrita pela primeira vez em 1972(5) e continua sendo um agente etiológico raro. Relatamos o caso de uma paciente com valva nativa que apresentou endocardite infecciosa causada por Eikenella corrodens.The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings¹; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 1972(5). That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis
Kathryn Bernard - One of the best experts on this subject based on the ideXlab platform.
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description of Eikenella halliae sp nov and Eikenella longinqua sp nov derived from human clinical materials emendation of Eikenella exigua stormo et al 2019 and emendation of the genus Eikenella to include species which are strict anaerobes
International Journal of Systematic and Evolutionary Microbiology, 2020Co-Authors: Kathryn Bernard, Tamara Burdz, Deborah Wiebe, Annemarie BernierAbstract:The Haemophilus, Aggregatibacter, Cardiobacterium, Eikenella, Kingella (HACEK) group genus Eikenella contained a single species, Eikenella corrodens, for many years. In November 2019, Eikenella exigua was described after recovery from a brain abscess and blood culture in Norway. Coincidentally, characterization of 22 Gram-negative bacteria resembling Eikenella from 17 Canadian patients had been underway. Seven isolates from five patients were conclusively identifiable as E. corrodens . One (NML 120819) was deemed to represent a species of the genus Eikenella most closely related to E. corrodens . Fourteen isolates had 97.6 to 98.8% similarities to E. corrodens by 16S rRNA gene sequencing, forming three distinct groups by genome analyses. The largest contained ten anaerobic isolates from eight patients recovered from blood, brain, bone and other abscesses; upon re-evaluation, this group was found to be most consistent with E. exigua . A second facultatively anaerobic clade consisted of two ocular isolates from one patient and a sinus isolate from a second patient. The third taxon consisted of a single strictly anaerobic blood culture isolate. The novel taxa, like E. corrodens , were poorly reactive biochemically and difficult to discern from each other phenotypically and chemotaxonomically, including by cellular fatty acids. MALDI-TOF (Bruker) and whole-genome sequencing were used to further characterize isolates. Draft genomes for the strains had similar DNA G+C contents (55.38–58.53 mol%) while sizes varied from 1.82 Mb to 2.54 Mb. We propose here emendations of the genus Eikenella and the species Eikenella exigua , as well as describing Eikenella halliae sp. nov. NML 130454T (=LMG 30894T=NCTC 14180T) and Eikenella longinqua sp. nov. NML 02-A-017T (=LMG 30896T=NCTC 14179T), on the basis of these findings.
Oyvind Kommedal - One of the best experts on this subject based on the ideXlab platform.
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Eikenella exigua sp nov isolated from brain abscess and blood
International Journal of Systematic and Evolutionary Microbiology, 2020Co-Authors: Kristin A Stormo, Randi M Nygaard, Torbjorn S Bruvold, Grete Dimmen, Paul Christoffer Lindemann, Stina Jordal, Oyvind KommedalAbstract:We herein describe the first novel species within the genus Eikenella since it was established in 1972 by the reclassification of ‘Bacteroides corrodens’ to Eikenella corrodens . From a polymicrobial brain abscess, we encountered an Eikenella isolate, PXXT, that could not validly be named E. corrodens . The isolate grew on blood agar with small, translucent, pitting colonies after 3 days of anaerobic incubation. By reviewing previously collected invasive isolates, we found an additional Eikenella strain, EI-02, from a blood culture exhibiting the same properties as PXXT. Phylogenetic analyses based on both whole genome and individual house-keeping genes confirmed that the two strains allocate in a phylogenetic cluster separate from E. corrodens . Using specific amplification and sequencing of the Eikenella nusG gene, we further detected the novel Eikenella species in six historic brain abscesses previously reported to contain E. corrodens based on 16S metagenomics. Out of 24 Eikenella whole-genome projects available in GenBank, eight cluster together with PXXT and EI-02. These isolates were recovered from brain abscess (n=2), blood (n=1), bone/soft tissue (n=3), parotid gland (n=1) and unknown (n=1). It remains to be investigated whether the new species can cause endocarditis. The average nucleotide identity value between strain PXXT and the E. corrodens type strain ATCC 23834T was 92.1 % and the corresponding genome-to-genome distance value was 47.1 %, both supporting the classification of PXXT as a novel species. For this species we propose the name Eikenella exigua. The type strain of E. exigua is PXXT (DSM 109756T, NCTC 14318T).
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description and whole genome sequencing of Eikenella exigua sp nov isolated from brain abscess and blood
bioRxiv, 2019Co-Authors: Kristin A Stormo, Randi M Nygaard, Torbjorn S Bruvold, Grete Dimmen, Paul Christoffer Lindemann, Stina Jordal, Oyvind KommedalAbstract:Abstract We herein describe the first novel species within the genus Eikenella since it was established in 1972 by the reclassification of “Bacteroides corrodens” to Eikenella corrodens. From a poly-microbial brain abscess, we encountered an Eikenella isolate PXX that could not validly be named E. corrodens. The isolate grew on blood agar with small, translucent, pitting colonies after 3 days of anaerobic incubation. By reviewing previously collected invasive isolates, we found an additional Eikenella strain EI_02 from a blood culture exhibiting the same properties as PXX. Phylogenetic analyses based on both whole genome and individual house-keeping genes confirmed that the two strains allocate in a phylogenetic cluster separate from E. corrodens. Using specific amplification and sequencing of the Eikenella nusG-gene as a method, we further detected the novel Eikenella species in six historic brain-abscesses previously reported to contain E. corrodens based on 16S metagenomics. Out of 24 Eikenella whole genome projects available in GenBank, eight cluster together with PXX and EI_02. These isolates were recovered from brain abscess (2), blood (1), bone/soft tissue (3), parotid gland (1) and unknown (1). It remains to be investigated whether the new species can be a cause of endocarditis. The average nucleotide identity (ANI) value between strain PXX and the E. corrodens type strain ATCC 23834 was 92.1% and the corresponding genome-to-genome distance value 47.1%, both supporting the classification of PXX as a novel species. For this species we propose the name Eikenella exigua. The E. exigua type strain is PXXT (DSM 109756T, NCTC 14318T).
Karen C Carroll - One of the best experts on this subject based on the ideXlab platform.
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utility of extended blood culture incubation for isolation of haemophilus actinobacillus cardiobacterium Eikenella and kingella organisms a retrospective multicenter evaluation
Journal of Clinical Microbiology, 2006Co-Authors: Cathy A Petti, Hasan S Bhally, Melvin P Weinstein, Kim L Joho, Teresa Wakefield, Barth L Reller, Karen C CarrollAbstract:The incidence of and average time to detection for Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, and Kingella (HACEK) bacteria in blood cultures with standard incubation and the utility of extended incubation of blood culture bottles were reviewed at four tertiary care microbiology laboratories. HACEK organisms were isolated from 35 (<0.005%) of 59,203 positive blood cultures. None of 407 blood cultures with extended incubation grew HACEK or other bacteria. Bacteremia from HACEK bacteria is rare, and extended incubation of blood cultures to recover HACEK bacteria is unnecessary.
Juliano Novaes Cardoso - One of the best experts on this subject based on the ideXlab platform.
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Received for publication: 04/21/2004 Accepted for publication: 02/10/2005
2016Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Alfredo Jose Mansur, Paulo Morgado, Robinson Munhoz, A E. Andretto, Antonio Carlos, Pereira Barretto, English StelaAbstract:dens, and Kingella kingae) account for 3 % of the cases of endo-carditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of the upper respiratory tract and oropharynx1,2. The following charac-teristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings 1; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 19725. That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis. Case repor
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endocardite infecciosa causada por Eikenella corrodens
Arquivos Brasileiros De Cardiologia, 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Paulo Cesar Morgado, Robinson Tadeu Munhoz, Fernanda E Andretto, A C BarrettoAbstract:The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings1; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 19725. That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis.
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Eikenella corrodens infective endocarditis
Arquivos Brasileiros De Cardiologia, 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Paulo Cesar Morgado, Robinson Tadeu Munhoz, Fernanda E Andretto, Alfredo Jose Mansur, A C BarrettoAbstract:The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings1; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 19725. That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis.
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Endocardite infecciosa causada por Eikenella corrodens Eikenella corrodens infective endocarditis
Sociedade Brasileira de Cardiologia (SBC), 2005Co-Authors: Juliano Novaes Cardoso, Marcelo Eidi Ochiai, Mucio Tavares De Oliveira, Fernanda E Andretto, Alfredo Jose Mansur, Paulo Morgado, Robinson Munhoz, A C BarrettoAbstract:Os microorganismos do grupo HACEK (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens e Kingella kingae) são responsáveis por 3% dos casos de endocardites. Eles apresentam propriedades clínicas e microbiológicas semelhantes entre si: são bacilos gram-negativos, isolados mais facilmente em meios aeróbicos, suas culturas necessitam de tempo prolongado de incubação para crescimento (média 3,3 dias) e podem ser considerados como parte da flora normal do trato respiratório superior e da orofaringe1,2. Algumas características foram identificadas nas endocardites por esses agentes, como o quadro clínico insidioso¹, diagnóstico difícil pela natureza fastidiosa e culturas negativas3,4. A endocardite por Eikenella corrodens foi descrita pela primeira vez em 1972(5) e continua sendo um agente etiológico raro. Relatamos o caso de uma paciente com valva nativa que apresentou endocardite infecciosa causada por Eikenella corrodens.The HACEK microorganisms (Haemophilus spp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) account for 3% of the cases of endocarditis. They have the following similar clinical and microbiological properties: are Gram-negative bacilli, more easily isolated in aerobic media; their cultures require prolonged incubation time for growing (mean, 3.3 days); and may be considered part of normal flora of upper respiratory tract and oropharynx1,2. The following characteristics have been identified in endocarditis caused by the HACEK microorganisms: insidious clinical findings¹; difficult diagnosis due to the fastidious nature of the microorganisms; and negative cultures3,4. The Eikenella corrodens endocarditis was first described in 1972(5). That microorganism continues to be a rare etiological agent. We report the case of a female patient with native valve, who had Eikenella corrodens infective endocarditis