| helcococcus ovis sp. nov., a gram-positive organism from sheep. | two strains of a hitherto undescribed gram-positive, catalase-negative, facultatively anaerobic coccus isolated from sheep were characterized by phenotypic and molecular taxonomic methods. comparative 16s rrna gene sequencing studies demonstrated that the unknown strains were genealogically highly related and constitute a new line close to, but distinct from, helcococcus kunzii. the unknown bacterium was readily distinguished from h. kunzii by biochemical tests and electrophoretic analysis of wh ... | 1999 | 10555322 |
| valvular endocarditis associated with helcococcus ovis infection in a bovine. | a 12-month-old angus bull calf with a history of fever and lethargy of several weeks' duration was necropsied. macroscopic findings included general dehydration, congestion, and edema within the craniodorsal lobes of the lung, multifocal ecchymotic hemorrhages on the dorsal epaxial and gluteal muscles, bloody ingesta within the gastrointestinal tract, and a 4- x 4- x 5-cm irregular plaque located on the right atrioventricular heart valve. microscopically, there were focally extensive pulmonary a ... | 2003 | 14535550 |
| helcococcus ovis isolated from a pulmonary abscess in a horse. | helcococcus ovis, a recently described organism cultured from sheep, was isolated in pure culture from a pulmonary abscess in a horse. this is the first report of this organism in horses and the first report in veterinary medicine to clearly demonstrate a pathogenic role for this organism. | 2004 | 15131196 |
| helcococcus ovis, an emerging pathogen in bovine valvular endocarditis. | the initial isolation of helcococcus ovis from a valvular thrombus prompted us to investigate the prevalence of this bacterium in bovine valvular endocarditis. specimens from 55 affected hearts were examined by culture using columbia blood agar and cross streaking the inoculated plate with a staphylococcus aureus strain. as confirmed by 16s rrna gene sequencing, h. ovis was isolated with an unexpectedly high frequency of 33%, predominantly as heavy growth and pure culture. the majority of h. ovi ... | 2008 | 18716228 |
| isolation of helcococcus ovis from sheep with pleuritis and bronchopneumonia. | helcococcus ovis is a newly established species in the genus helcococcus. the clinical significance of this organism in sheep has not been reported. in the current report, isolation of h. ovis from a 6-month-old mixed-breed ewe lamb that died of respiratory disease is described. pathologic examination revealed severe, focally extensive, chronic necrotizing pleuritis with intralesional coccobacilli and mild, multifocal, subacute mucopurulent bronchopneumonia, indicating a bacterial etiology. a gr ... | 2009 | 19139523 |
| antimicrobial susceptibilities and occurrence of resistance genes in bovine helcococcus ovis isolates. | the aim of the study was to investigate antimicrobial susceptibilities of bovine helcococcus ovis isolates and to detect genes encoding for h. ovis erythromycin and tetracycline resistance. twenty-nine isolates were included and the minimal inhibitory concentrations (mics) of seven antimicrobials were determined using test conditions as given in an approved clsi guideline for the pyridoxal-dependent abiotrophia spp. and granulicatella spp. furthermore, the macrolide resistance phenotype was exam ... | 2010 | 21131144 |
| Hot topic: Bovine milk samples yielding negative or nonspecific results in bacterial culturing-The possible role of PCR-single strand conformation polymorphism in mastitis diagnosis. | A large proportion of mastitis milk samples yield negative or nonspecific results (i.e., no mastitis pathogen can be identified) in bacterial culturing. Therefore, the culture-independent PCR-single strand conformation polymorphism method was applied to the investigation of bovine mastitis milk samples. In addition to the known mastitis pathogens, the method was suitable for the detection of fastidious bacteria such as Mycoplasma spp., which are often missed by conventional culturing methods. Th ... | 2012 | 22192188 |
| bovine abortions caused by helcococcus ovis. | | 2014 | 25013196 |
| helcococcus kunzii and helcococcus ovis isolated in dairy cows with puerperal metritis. | | 2013 | 24201149 |
| helcococcus ovis isolated from a goat with purulent bronchopneumonia and pulmonary abscesses. | the current study describes the recovery of helcococcus ovis from an adult female verata breed goat that was euthanized because of respiratory problems and emaciation. at necropsy, the affected animal showed a purulent bronchopneumonia with scattered pulmonary abscesses and fibrous pleural adhesions. a gram-positive, catalase-negative, coccus-shaped bacterium was isolated from the lung tissue and confirmed as h. ovis by 16s ribosomal rna gene sequencing. | 2012 | 22362961 |
| vegetative valvular endocarditis and hepatitis associated with helcococcus ovis in a 7-year-old white leghorn rooster. | helcococcus ovis is a slow-growing, pyridoxal-dependent, gram-positive coccus belonging to the peptostreptococcaceae family. bacteria belonging to the genus helcococcus are considered normal inhabitants of keratinized epithelium in humans; however, several reports support their role as pathogens in humans and several animal species. this case report describes the identification of h. ovis in a white leghorn rooster with valvular vegetative endocarditis and hepatitis. in february 2017 one dead, 7 ... | 2017 | 29337618 |