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Antimicrobial Agents and Chemotherapy Jan 1994The susceptibilities of 138 clinical isolates of Arcanobacterium haemolyticum to 11 antimicrobial agents were tested. All strains were susceptible to...
The susceptibilities of 138 clinical isolates of Arcanobacterium haemolyticum to 11 antimicrobial agents were tested. All strains were susceptible to phenoxymethylpenicillin, cephalosporins, erythromycin, azithromycin, clindamycin, vancomycin, doxycycline, and ciprofloxacin but were resistant to trimethoprim-sulfamethoxazole.
Topics: Actinomycetaceae; Actinomycetales Infections; Anti-Bacterial Agents; Humans; Microbial Sensitivity Tests
PubMed: 8141569
DOI: 10.1128/AAC.38.1.142 -
International Journal of Systematic and... Aug 2021Two rod-shaped and Gram-stain-positive bacteria (strains C64 and C62) were isolated in 2020 from faeces of greater white-fronted geese () from Poyang Lake, PR China....
Two rod-shaped and Gram-stain-positive bacteria (strains C64 and C62) were isolated in 2020 from faeces of greater white-fronted geese () from Poyang Lake, PR China. Their optimal growth conditions were at 37 °C, pH 7.0 and with 0.5 % (w/v) NaCl. The two isolates showed a highest 16S rRNA gene sequence similarity to DSM 19116 (92.1 %). Phylogenetic/phylogenomic analyses indicated that strains C64 and C62 clustered independently in the vicinity of the genera , and within the family , but could not be classified clearly as members of any of these known genera. The average amino acid identity values between our isolates and available genomes of members of the family were around the genus threshold value (45-65 %). The major cellular fatty acids of the strains were Cω and C. The predominant polar lipids were phosphatidylinositol, phosphatidylglycerol, phosphatidylcholine, diacylglycerol, triacylglycerol and cardiolipin. The amino acid composition of peptidoglycan contained alanine, glutamic acid and glycine. The major respiratory menaquinones were MK-8(H) and MK-9(H). The whole cell sugars included galactose, arabinose and glucose. On the basis of the results of the 16S rRNA gene sequences comparison, whole-genome phylogenomic analysis, phenotypic and chemotaxonomic characteristics, we propose that strains C64 and C62 represent a novel species belonging to a novel genus within the family , for which the name gen. nov., sp. nov. is proposed. The type strain is C64 (=CGMCC 1.18410=GDMCC 1.1969=KCTC 49511=KACC 22143).
Topics: Actinomycetaceae; Animals; Bacterial Typing Techniques; Base Composition; China; DNA, Bacterial; Fatty Acids; Feces; Geese; Phospholipids; Phylogeny; RNA, Ribosomal, 16S; Sequence Analysis, DNA; Vitamin K 2
PubMed: 34431769
DOI: 10.1099/ijsem.0.004978 -
Journal of Equine Veterinary Science Aug 2020A 7-year-old American Quarter Horse gelding was referred to the JT Vaughan Large Animal Teaching Hospital at Auburn University, College of Veterinary Medicine, for an...
A 7-year-old American Quarter Horse gelding was referred to the JT Vaughan Large Animal Teaching Hospital at Auburn University, College of Veterinary Medicine, for an investigation of a recurrent swelling of the nasofrontal region. Computed tomography examination of the skull was most consistent with a sequestrum of the left nasofrontal suture with associated focal osteomyelitis and left conchofrontal sinusitis. Surgery to remove the sequestrum, debride the devitalized bone, and flush the left conchofrontal sinus was performed. A microbial culture was obtained at the time of surgery, which yielded a mixed heavy growth of an Actinomyces species. Quantitative PCR indicated a species with 93% resemblance to Actinomyces funkei. A treatment course of two weeks of oral chloramphenicol was prescribed. At three-month follow-up, the owner reported resolution of the swelling.
Topics: Actinomyces; Actinomycetaceae; Animals; Horse Diseases; Horses; Male; Osteomyelitis; Sutures
PubMed: 32684273
DOI: 10.1016/j.jevs.2020.103148 -
La Revue de Medecine Interne Mar 2021Dermatological manifestations of actinomycosis are classical, most often related to Actinomyces israelii. In most of the cases, they occur near to the primary focus, and... (Review)
Review
INTRODUCTION
Dermatological manifestations of actinomycosis are classical, most often related to Actinomyces israelii. In most of the cases, they occur near to the primary focus, and in the cervicofacial area. Systemic dissemination with cutaneous distant metastasis is rare, most often related to A. israelii, too. We report an original case of upper limb actinomycosis associated with an oral localisation and due to an unusual bacteria.
CASE REPORT
A 49-year-old man was referred to the Department of dermatology for a skin lesion of the left hand and wrist. Biopsies revealed actinomycosis related to A. meyeri. Dental primary focus was identified and treated. Although the patient was lost sight of, dental eradication and prolonged antibiotics therapy allowed cutaneous improvement.
DISCUSSION
We report an atypical case of cutaneous actinomycosis due to an Actinomyces meyeri dental infection occurring in an immunocompetent, smoking adult, with poor oral hygiene. The literature review revealed only 4 well-documented cases of cutaneous A. meyeri infections distant to dental primary focus. All of patients were males, immunocompetent, with a history of poor oral hygiene. The prognosis is favourable with adequate treatment (antibiotic therapy and surgical treatment to eradicate dental infectious entry points).
Topics: Actinomyces; Actinomycetaceae; Actinomycosis; Adult; Humans; Male; Middle Aged; Skin Diseases, Bacterial
PubMed: 33303221
DOI: 10.1016/j.revmed.2020.11.011 -
Microbiological Sciences Jan 1988Biological N2 fixation is performed most effectively by prokaryotic diazotrophs when in mutualistic symbioses with higher plants. The most intensively studied N2-fixing... (Review)
Review
Biological N2 fixation is performed most effectively by prokaryotic diazotrophs when in mutualistic symbioses with higher plants. The most intensively studied N2-fixing symbioses involve leguminous plants and rhizobia. However, Frankia actinomycetes have attracted attention recently because they form root nodules on a broad range of non-legumes and because such nodules fix N2 as effectively as rhizobial nodules. Since the Frankia symbiosis results from an actinomycetic invasion of plant roots, it has been termed the 'actinorhizal symbiosis'.
Topics: Actinomycetaceae; Ammonia; Bacterial Proteins; Bacteriological Techniques; Genes, Bacterial; Nitrogen Fixation; Nitrogenase; Oxygen; Plants; Symbiosis
PubMed: 3079215
DOI: No ID Found -
Journal of Dental Research Feb 1979The nucleator of dental calculus matrix calcification, in vitro, was analyzed. Attention focused on proteolipid singularity, amino acid composition and related polarity,... (Comparative Study)
Comparative Study
The nucleator of dental calculus matrix calcification, in vitro, was analyzed. Attention focused on proteolipid singularity, amino acid composition and related polarity, and phospholipid components. The data were compared to those of the nucleator of Bacterionema matruchotii calcification.
Topics: Actinomycetaceae; Apatites; Calcification, Physiologic; Calcinosis; Chromatography; Chromatography, Gas; Chromatography, Liquid; Crystallization; Dental Calculus; Humans; Phospholipids; Proteins; Proteolipids
PubMed: 283092
DOI: 10.1177/00220345790580021401 -
Revista Espanola de Quimioterapia :... Apr 2019
Topics: Abscess; Actinomycetaceae; Adult; Amoxicillin-Potassium Clavulanate Combination; Anti-Bacterial Agents; Arcanobacterium; Breast Diseases; Drug Resistance, Bacterial; Female; Gram-Positive Bacterial Infections; Humans; Microbial Sensitivity Tests; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
PubMed: 30847460
DOI: No ID Found -
BMJ Case Reports Nov 2020A 40-year-old man presented to his primary care physician with a constellation of systemic symptoms and new biofilm forming along his upper airway. He had brought home a...
A 40-year-old man presented to his primary care physician with a constellation of systemic symptoms and new biofilm forming along his upper airway. He had brought home a deer 10 days prior from a day of hunting, and discovered green purulent material oozing from the entrance/exit wounds. The patient smokes cigarettes and did not use any protective equipment or wash his hands between dressing the deer and smoking. Several days following exposure, he became increasingly short of breath, fatigued, constipated and developed a cough productive of orange sputum. Speaking with state wildlife biologists led to the diagnosis of a zoonotic infection. Initial treatment with broad spectrum antibiotics was ineffective in resolving the infection. An infectious disease appointment was made, but the patient's infection resolved with the use of a veterinarian antibiotic taken under physician's supervision.
Topics: Actinomycetaceae; Adult; Diagnosis, Differential; Gram-Positive Bacterial Infections; Humans; Immunocompromised Host; Male; Pharyngitis; Pharynx
PubMed: 33229475
DOI: 10.1136/bcr-2020-236129 -
Enfermedades Infecciosas Y... Nov 2021
Topics: Actinomycetaceae; Bacteria, Anaerobic; Child; Genitalia; Humans; Ulcer
PubMed: 34446393
DOI: 10.1016/j.eimce.2021.08.008 -
Revista Del Instituto de Salubridad Y... Sep 1956
Topics: Actinomycetaceae; Nocardia
PubMed: 13408718
DOI: No ID Found