| rapid differentiation between members of the anginosus group and streptococcus dysgalactiae subsp. equisimilis within beta-hemolytic group c and g streptococci by pcr. | based on a pair of primers developed initially for differentiating the anginosus group from other viridans streptococci, the pcr reported here can also differentiate between members of the anginosus group and streptococcus dysgalactiae subsp. equisimilis among beta-hemolytic group c and g streptococci. the resulting 742-bp pcr product was specific for members of the anginosus group, although a smaller, nonspecific product (361 bp) was generated from s. dysgalactiae subsp. equisimilis. restrictio ... | 2006 | 16672416 |
| acute peritonitis and salpingitis associated with streptococcal toxic shock syndrome caused by lancefield group g alpha-haemolytic streptococcus dysgalactiae subsp. equisimilis. | the authors treated a patient for what appears to be the first reported occurrence of acute peritonitis and salpingitis associated with streptococcal toxic shock syndrome (stss). this was caused by lancefield group g alpha-haemolytic streptococcus dysgalactiae subsp. equisimilis tkch2004-001. the isolate showed m protein type stc36 and carried the spegg gene. to the best of the authors' knowledge, the present report represents the first case of stss complicating acute peritonitis and salpingitis ... | 2006 | 16772425 |
| the effect of polyphosphates on streptococci isolated from mastitis cases. | the effect of 0.01, 0.02, 0.03, 0.05, 0.6, 0.8 and 0.9% of polyphosphate mixture on 5 strains of streptococcus agalactiae, 2 strains of streptococcus dysgalactiae and 3 strains of steptococcus uberis in blood agar in vitro and in milk was examined. it was found that the growth of all strains of the above mentioned bacteria was completely inhibited by 0.03% phosphate mixture in blood agar. in milk, however, the amount of polyphosphate mixture necessary for total inhibition was, from 0.6 to 0.9%, ... | 2006 | 16780181 |
| dysgalacticin: a novel, plasmid-encoded antimicrobial protein (bacteriocin) produced by streptococcus dysgalactiae subsp. equisimilis. | dysgalacticin is a novel bacteriocin produced by streptococcus dysgalactiae subsp. equisimilis strain w2580 that has a narrow spectrum of antimicrobial activity directed primarily against the principal human streptococcal pathogen streptococcus pyogenes. unlike many previously described bacteriocins of gram-positive bacteria, dysgalacticin is a heat-labile 21.5 kda anionic protein that kills its target without inducing lysis. the n-terminal amino acid sequence of dysgalacticin [asn-glu-thr-asn-a ... | 2006 | 16804174 |
| the role of group c and group g streptococci in acute pharyngitis in children. | group c streptococci (gcs) and group g beta-haemolytic streptococci (ggs) have caused well-documented epidemics of acute pharyngitis in children, but the importance of these organisms in causing endemic or sporadic pharyngitis is uncertain. the heterogeneity of gcs and ggs may obscure the role of certain subtypes, such as the large-colony-forming strains of group c (streptococcus dysgalactiae subsp. equisimilis) or group g, in endemic pharyngitis. for a 1-year period, children (aged 6 months to ... | 2004 | 14706084 |
| dna methylase activity as a marker for the presence of a family of phage-like elements conferring efflux-mediated macrolide resistance in streptococci. | recently, two related chimeric genetic elements (tn1207.3 and phi10394.4) were shown to carry the macrolide efflux gene mef in streptococcus pyogenes (group a streptococci [gas]). the dissemination of elements belonging to the tn1207.3/phi10394.4 family in recent isolates of gas, streptococcus dysgalactiae subsp. equisimilis, streptococcus pneumoniae, and streptococcus agalactiae recovered in portugal was surveyed. in total, 149 gas, 18 s. pneumoniae, 4 s. dysgalactiae subsp. equisimilis, and 5 ... | 2006 | 16954322 |
| dual control of streptokinase and streptolysin s production by the covrs and fascax two-component regulators in streptococcus dysgalactiae subsp. equisimilis. | synthesis of the plasminogen activator streptokinase (sk) by group a streptococci (gas) has recently been shown to be subject to control by two two-component regulators, covrs (or csrrs) and fasbca. in independent studies, response regulator covr proved to act as the repressor, whereas fasa was found to act indirectly as the activator by controlling the expression of a stimulatory rna, fasx. in an attempt at understanding the regulation of sk production in the human group c streptococcal (gcs) s ... | 2002 | 12065504 |
| two rare clinical manifestations of coenurosis in sheep. | two rare clinical manifestations of coenurosis in sheep are reported. (i) a case of partial seizure disorder in a ram of 11 months old. during seizure episodes the animal lay down in lateral recumbency displaying initially a stuporous condition and subsequently began to revolve its head from the base of the cervix. at the necropsy of the case, coenurus cerebralis cyst (young bladder worm) was found dorsally inside the brainstem, in the site of the tectum mesencephaly. (ii) the second-reported ma ... | 2007 | 17027156 |
| cutaneous lesions associated with bacteremia by streptococcus dysgalactiae. | | 2006 | 17052543 |
| identification of a novel virulence determinant with serum opacification activity in streptococcus suis. | streptococcus suis serotype 2 is a porcine and human pathogen with adhesive and invasive properties. in other streptococci, large surface-associated proteins (>100 kda) of the mscramm family (microbial surface components recognizing adhesive matrix molecules) are key players in interactions with host tissue. in this study, we identified a novel opacity factor of s. suis (ofs) with structural homology to members of the mscramm family. the n-terminal region of ofs is homologous to the respective r ... | 2006 | 17057090 |
| delayed diagnosis of meningitis caused by beta-haemolytic group g. streptococcus in an older woman. | a case of meningitis caused by group g beta-hemolytic streptococcus (dysgalactiae, subspecies equisimilis) is reported in an 83-year-old woman. streptococci species other than streptococcus pneumoniae are seldom found in patients with acute bacterial meningitis, therefore, our discussion is focused on this rare organism. the question of the diagnosis of meningitis in the elderly is also addressed. | 2001 | 11728766 |
| [a case of thoracic empyema with gas formation associated with streptococcus dysgalactiae subsp. equisimilis]. | a 63-year-old woman suffering from dyspnea since 1 week earlier underwent a combination therapy of oral corticosteroid and ciclosporin for rheumatic arthritis. chest radiography showed plural effusion with gas formation in the right thorax. empyema was diagnosed based on the specimen from pleural effusion. after a chest tube was emplaced to remove and wash out pus, antibiotics were started and empyema improved immediately. streptococcus dysgalactiae subsp. equisimilis, but not aerobic bacilli, w ... | 2006 | 17073267 |
| clinical mastitis in norwegian herds after a combined selective dry-cow therapy and teat-dipping trial. | the objective of this study was to see if introduction of a 2-yr combined selective dry-cow therapy and teat-dipping trial would reduce clinical mastitis (cm) events in 164 norwegian dairy herds. three different penicillin or penicillin/dihydrostreptomycin-based dry-cow treatments, and 3 different teat-dipping regimens (negative control, iodine teat dip, or an external teat sealant) were independently and randomly allocated to each herd. complete lactations both before and during the trial were ... | 2006 | 17106097 |
| outcome of clinical mastitis in dairy heifers assessed by reexamination of cases one month after treatment. | heifers that were treated for clinical mastitis prior to parturition or within 14 d postpartum were reexamined approximately 1 mo after treatment. clinical examination of the heifers and microbiological examination of quarter milk samples were carried out on both occasions. of the 1000 heifers included in the study, 10.9% were culled within 28 d after treatment. udder damage caused by mastitis was the only or main reason for culling in 96% of those heifers. in comparison, 4.5% of nonmastitic hei ... | 2000 | 10659966 |
| intramammary infections in heifers during early lactation following intramammary infusion of pirlimycin hydrochloride or penicillin-novobiocin at the first milking after parturition. | a study was conducted to determine whether intramammary antibiotic treatment of heifer mammary glands following the first milking after calving was effective for reducing the percentage of mammary quarters infected during early lactation. jersey and holstein heifers from two research herds were assigned to one of three treatment groups: (1) no intramammary infusion following the first milking after parturition, (2) intramammary infusion of all quarters with pirlimycin hydrochloride following the ... | 2007 | 17227598 |
| the natural food grade inhibitor, lacticin 3147, reduced the incidence of mastitis after experimental challenge with streptococcus dysgalactiae in nonlactating dairy cows. | lacticin 3147 is a broad-spectrum bacteriocin produced by the food-grade organism lactococcus lactis. lacticin 3147 is active at a neutral ph and has been shown to be bactericidal to streptococci and staphylococci in vitro. the effectiveness of an intramammary teat seal formulation, and a teat seal containing lacticin 3147 was evaluated at drying off in 68 uninfected quarters of 18 cows. following infusion of either teat seal or lacticin 3147 combined with teat seal, a deliberate infection chall ... | 1999 | 10531595 |
| lateral transfer of alpha-like protein gene cassettes among streptococci: identification of a new family member in streptococcus dysgalactiae subsp. equisimilis. | | 2007 | 17257265 |
| phage 3396 from a streptococcus dysgalactiae subsp. equisimilis pathovar may have its origins in streptococcus pyogenes. | streptococcus dysgalactiae subsp. equisimilis strains (group g streptococcus [ggs]) are largely defined as commensal organisms, which are closely related to the well-defined human pathogen, the group a streptococcus (gas). while lateral gene transfers are emerging as a common theme in these species, little is known about the mechanisms and role of these transfers and their effect on the population structure of streptococci in nature. it is now becoming evident that bacteriophages are major contr ... | 2007 | 17259318 |
| cloning, expression, and characterization of the superantigen streptococcal pyrogenic exotoxin g from streptococcus dysgalactiae. | we identified seven novel variants of streptococcal pyrogenic exotoxin g (spegg), a superantigen, in streptococcus dysgalactiae subsp. dysgalactiae or equisimilis isolates from clinical cases of infection in humans and animals. phylogenetic analysis of the spegg variants indicated two clades in the dendrogram: one composed of variants derived from the bacteria isolated from the humans and the other composed of variants from the bacteria isolated from the animals. bovine peripheral blood mononucl ... | 2007 | 17283088 |
| stochastic modeling to determine the economic effects of blanket, selective, and no dry cow therapy. | in many countries, blanket dry cow therapy (dct) is the standard way to dry off cows. because of concerns about antibiotic resistance, selective dct is proposed as an alternative. the economic consequences of different types of dct were studied previously, but variation between input traits and different types of pathogens were not taken into account. the goal of this study was to create a stochastic monte carlo model to simulate the dynamics of intramammary infections (imi) around the dry perio ... | 2007 | 17297099 |
| characterization of mechanisms involved in uptake of streptococcus dysgalactiae by bovine mammary epithelial cells. | bovine mammary epithelial cells were pretreated with inhibitors of protein kinase activity, actin polymerization and receptor-mediated endocytosis. in addition, mammary epithelial cells and streptococcus dysgalactiae were pretreated with inhibitors of protein synthesis. results showed that activity of tyrosine protein kinases, intact microfilaments and de novo eukaryotic protein synthesis was required for uptake of s. dysgalactiae by bovine mammary epithelial cells; a process that appeared to oc ... | 1998 | 9851004 |
| wasps are the cause of an increasing mastitis problem in dairy cattle in israel. | the german wasp vespula germanica (fabr.) (hymenoptera: vespidae) has been observed to injure dairy cows teats, causing lesions which can lead to mastitis. the number of dairy herds in israel reported to be affected in this way has increased from five prior to 1989 to 32 from 1989 to 1993. likewise, the geographical distribution of the colonies of these wasps has expanded from the galilee to the northern negev. most cases of mastitis appeared during august and september when the wasps were most ... | 1998 | 9684301 |
| increasing parasitism by the german yellow jacket wasp, paravespula germanica, on dairy cattle in israel. | during the past two decades, parasitism by the german yellow jacket wasp, paravespula germanica, on lactating dairy cattle has occurred in israel during august to october annually, affecting up to 65% of cows in certain herds. the nibbled and exposed tissues of teats and sometimes udders become infested by bacteria, especially streptococcus dysgalactiae and actinomyces pyogenes, causing clinical and subclinical mastitis. normally, german wasps are primarily insect predators, but the urbanization ... | 1998 | 9622374 |
| lancefield group b and c streptococci in east african camels (camelus dromedarius). | seventeen lancefield group c streptococci (13 streptococcus equi zooepidemicus and four streptococcus dysgalactiae equisimilis) and 185 lancefield group b streptococci (streptococcus agalactiae) were isolated from camels (camelus dromedarius) in kenya and somalia; 59 of the isolates were from healthy nasopharynx, vaginal and rectal mucosa and from non-abscessed lymph nodes, and the other 143 isolates were from clinical infections of the respiratory tract, tick bite lesions, abscessed lymph nodes ... | 2007 | 17351174 |
| the effect of season on somatic cell count and the incidence of clinical mastitis. | bulk milk somatic cell count (bmscc), individual cow somatic cell count (icscc), and incidence rate of clinical mastitis (ircm) are all udder health parameters. so far, no studies have been reported on the effect of season on bmscc, ircm, and icscc in the same herds and period over multiple years. the objectives of this study were to determine the seasonal pattern over a 4-yr period of 1) bmscc, 2) elevated icscc, 3) ircm, and 4) pathogen-specific ircm. bulk milk somatic cell count, icscc, and p ... | 2007 | 17369210 |
| clinical and epidemiological investigation of chronic upper respiratory diseases caused by beta-haemolytic streptococci in horses. | an outbreak of strangle-like disease involving 26 horses farmed in central italy was investigated by clinic examination, endoscopy, cytology, bacteriology and polymerase chain reaction (pcr). at weekly interval, a total of three nasal swabs and one guttural pouches lavage fluid (gplf) were collected, and no streptococcus equi subsp. equi carrier was found. some horses showed upper airways disease and endoscopic signs of pharyngeal lymphoid hyperplasia of different grade and/or abnormal endoscopi ... | 2007 | 17433441 |
| invasion and persistence of streptococcus dysgalactiae within bovine mammary epithelial cells. | little is known about bacterial and host factors that contribute to the establishment and persistence of intramammary infection by streptococcus dysgalactiae. streptococcus dysgalactiae adheres to epithelial cells from the bovine mammary gland and to extracellular matrix proteins in vitro and invades mammary epithelial cell cultures, all of which can be potentially important pathogenic mechanisms. in this study, mechanisms involved in the invasion of strep. dysgalactiae into epithelial cells fro ... | 1998 | 9565870 |
| virulence profiling of streptococcus dysgalactiae subspecies equisimilis isolated from infected humans reveals 2 distinct genetic lineages that do not segregate with their phenotypes or propensity to cause diseases. | in spite of the emerging importance of streptococcus dysgalactiae subspecies equisimilis (human group c streptococci [gcs] and group g streptococci [ggs]) in human health, its molecular makeup remains largely undefined. apart from sharing a phylogenetic relationship with the human pathogen group a streptococci (gas), gcs/ggs and gas colonize the same ecological niche and exhibit considerable overlap in their disease profiles. such similarities imply that the virulence factors associated with dis ... | 2007 | 17479940 |
| streptococcus ictaluri sp. nov., isolated from channel catfish ictalurus punctatus broodstock. | a streptococcal-like organism was associated with diseased channel catfish ictalurus punctatus broodstock on four commercial aquaculture operations in the mississippi delta. conventional biochemical testing, 16s rrna gene sequence analysis and dna-dna hybridization distinguished the isolates from these fish from previously published streptococcus species. comparative 16s rrna gene sequencing studies revealed that the isolates were phylogenetically most similar to streptococcus iniae, streptococc ... | 2007 | 17625202 |
| penicillin blood-level determinations with a streptococcus dysgalactiae resistant to normal blood inhibitors. | a strain of str. dysgalactiae was found to be an effective test organism for penicillin blood-level determinations. this organism, although inhibited by penicillin in concentrations of 0.006-0.008 unit/ml., is resistant to the natural inhibiting substances of blood sera. the latter characteristic is very significant, since the test organisms (str. pyogenes c-203 and b. subtilis) that are now employed for penicillin assay of body fluids are inhibited by a large percentage of human sera. the metho ... | 1946 | 17757720 |
| comparison of success of antibiotic therapy during lactation and results of antimicrobial susceptibility tests for bovine mastitis. | antimicrobial susceptibility testing was conducted on a variety of mastitis pathogens. the infected quarters were subsequently treated during lactation with a commercially available product containing penicillin and novobiocin that was designed for lactating cows. cows were treated as per the recommendations of the product manufacturer, and cures were determined by the absence of bacteria in both sets of duplicate quarter milk samples that were collected at 28 d posttreatment. comparisons were m ... | 1997 | 9058273 |
| erm(a)-mediated macrolide resistance and ability to invade human respiratory cells in a streptococcus dysgalactiae subspecies equisimilis pharyngeal isolate. | | 2007 | 17938128 |
| macrolide resistance trends in beta-hemolytic streptococci in a tertiary korean hospital. | erythromycin-resistant beta-hemolytic streptococci (bhs) has recently emerged and quickly spread between and within countries throughout the world. in this study, we evaluate the antimicrobial susceptibility patterns and erythromycin resistance mechanisms of bhs during 2003-2004. | 2007 | 17963333 |
| partial sequencing of soda gene and its application to identification of streptococcus dysgalactiae subsp. dysgalactiae isolated from farmed fish. | to investigate the difference between lancefield group c streptococcus dysgalactiae (gcsd) strains isolated from diseased fish and animals by sequencing and phylogenetic analysis of the soda gene. | 2008 | 17971096 |
| protein fog is a moderate inducer of mig/cxcl9, and group g streptococci are more tolerant than group a streptococci to this chemokine's antibacterial effect. | streptococcus dysgalactiae subsp. equisimilis (group g streptococci; ggs) cause disease in humans but are often regarded as commensals in comparison with streptococcus pyogenes (group a streptococci; gas). the current study investigated the degree and kinetics of the innate immune response elicited by the two species. this was assessed as expression of the chemokine mig/cxcl9 and bacterial susceptibility to its bactericidal effect. no significant difference in mig/cxcl9 expression from thp-1 or ... | 2007 | 17975089 |
| the analysis of milk components and pathogenic bacteria isolated from bovine raw milk in korea. | bovine mastitis can be diagnosed by abnormalities in milk components and somatic cell count (scc), as well as by clinical signs. we examined raw milk in korea by analyzing scc, milk urea nitrogen (mun), and the percentages of milk components (milk fat, protein, and lactose). the associations between scc or mun and other milk components were investigated, as well as the relationships between the bacterial species isolated from milk. somatic cell counts, mun, and the percentages of milk fat, prote ... | 2007 | 18024731 |
| beta-lactam failure in treatment of two group g streptococcus dysgalactiae subsp. equisimilis pharyngitis patients. | we present two cases of exudative pharyngitis due to streptococcus dysgalactiae subsp. equisimilis, lancefield group g. while the participation of this organism as an agent of pharyngitis is well documented, we focus on failure of beta-lactam therapy, a phenomenon that is well described for pharyngitis due to streptococcus pyogenes. therefore, these case reports add to our knowledge of pharyngitis caused by non-s. pyogenes streptococci. | 2008 | 18057124 |
| identification of tet(s) gene area in tetracycline-resistant streptococcus dysgalactiae subsp. equisimilis clinical isolates. | | 2008 | 18156606 |
| streptococcus dysgalactiae cellulitis and toxic shock like syndrome in a brown swiss cow. | an adult brown swiss cow was presented to the large animal hospital of the centre hospitalier universitaire vétérinaire de l'université de montréal due to a postpartum downer cow syndrome. the animal had severe and generalized swelling of all 4 limbs and was in shock, as demonstrated by hypotension, dehydration, hypothermia, altered mental status, and abnormal blood parameters. it died rapidly, and necropsy revealed a generalized, severe cellulitis caused by streptococcus dysgalactiae subsp. dys ... | 2008 | 18182521 |
| epidemiology of streptococcus dysgalactiae subsp. equisimilis in tropical communities, northern australia. | streptococcus dysgalactiae subsp. equisimilis (groups c and g streptococci [gcs/ggs]) is an increasingly recognized human pathogen, although it may follow indirect pathways. prospective surveillance of selected households in 3 remote aboriginal communities in australia provided 337 gcs/ggs isolates that were emm sequence-typed. lancefield group c isolates (gcs) were localized to specific households and group g isolates (ggs) were more evenly distributed. gcs/ggs was more frequently recovered fro ... | 2007 | 18217553 |
| prevalence and duration of intramammary infection in danish heifers during the peripartum period. | milk samples were collected from 180 heifers from 20 herds around parturition to study the prevalence and persistence of intramammary infection (imi). a total of 3382 quarter milk samples was collected each week from 4 wk before parturition to 4 wk after parturition. staphylococcus chromogenes, the most commonly found bacterial species before parturition, was isolated from 15% of all quarters. however, imi with staph. chromogenes decreased shortly after parturition to around 1% of quarters. infe ... | 1997 | 9058272 |
| characterization of a bacteriophage lysin (ply700) from streptococcus uberis. | the antibacterial properties of bacteriophage lytic enzymes may be of importance in future mastitis control programs. a prophage was isolated from a strain of streptococcus uberis (atcc 700407) following exposure to mitomycin c. partial sequencing of the phage dna revealed a putative lysin based on sequence similarity to other streptococcal phage lysins. the putative lysin (ply700) was recombinantly expressed in escherichia coli, and chromatographically purified. addition of the purified ply700 ... | 2008 | 18242012 |
| acute bacterial, nonnecrotizing cellulitis in finland: microbiological findings. | bacterial, nonnecrotizing cellulitis is a localized and often recurrent infection of the skin. the aim of this study was to identify the beta-hemolytic streptococci that cause acute nonnecrotizing cellulitis infection in finland. | 2008 | 18260753 |
| genetic features of clinical isolates of streptococcus dysgalactiae subsp. equisimilis possessing lancefield's group a antigen. | thirteen streptococcus dysgalactiae subsp. equisimilis isolates possessing lancefield's group a antigen recovered from people in japan during 2000 to 2004 were genotyped. the results indicate that a conserved clone has persisted and spread within japan, and two different emm types were observed within members of this clone. | 2008 | 18305132 |
| incidence rate of clinical mastitis on canadian dairy farms. | no nationwide studies of the incidence rate of clinical mastitis (ircm) have been conducted in canada. because the ircm and distribution of mastitis-causing bacteria may show substantial geographic variation, the primary objective of this study was to determine regional pathogen-specific ircm on canadian dairy farms. additionally, the association of pathogen-specific ircm with bulk milk somatic cell count (bmscc) and barn type were determined. in total, 106 dairy farms in 10 provinces of canada ... | 2008 | 18349229 |
| bacteremia caused by group g streptococci, taiwan. | a retrospective observational study in taiwan, 1998-2004, identified 92 patients with group g streptococcal bacteremia; 86 had streptococcus dysgalactiae subspecies equisimilis. the most common diagnosis was cellulitis (48 cases), followed by primary bacteremia (34 cases). infection recurred in 9 patients. mortality rate was low (3.3%); resistance to quinupristin-dalfopristin was high. | 2008 | 18439377 |
| pathogen-specific effects of quantitative trait loci affecting clinical mastitis and somatic cell count in danish holstein cattle. | the aim of this study was to investigate whether quantitative trait loci (qtl) affecting the risk of clinical mastitis (cm) and qtl affecting somatic cell score (scs) exhibit pathogen-specific effects on the incidence of mastitis. bacteriological data on mastitis pathogens were used to investigate pathogen specificity of qtl affecting treatments of mastitis in first parity (cm1), second parity (cm2), and third parity (cm3), and qtl affecting scs. the 5 most common mastitis pathogens in the danis ... | 2008 | 18487673 |
| bovine mastitis and antibiotic resistance patterns in selalle smallholder dairy farms, central ethiopia. | a study was conducted to determine the prevalence of mastitis, identify the major bacterial pathogens and test the antimicrobial resistance of milk bacterial isolates in smallholder dairy farms in selalle area, ethiopia. a total of 109 smallholder dairy farms comprising 500 crossbred lactating cows were included. the prevalence of clinical mastitis at herd, cow and quarter level was 8.3% (n=9), 1.8% (n=9) and 0.51% (n=10), respectively, while that of sub-clinical mastitis was 54.7%, 22.3% and 10 ... | 2008 | 18557189 |
| fatal group c streptococcal infection due to transfusion of a bacterially contaminated pooled platelet unit despite routine bacterial culture screening. | an elderly man with chronic myelomonocytic leukemia developed respiratory distress and died less than 48 hours after transfusion of a pool of eight whole blood-derived platelets (plts). blood cultures from the recipient and cultures of remnants from the pooled plt bag grew group c streptococci (gcs). an investigation was conducted to identify both the infection's source and the reasons for the false-negative screening result. | 2008 | 18564393 |
| infections with beta-haemolytic streptococci: detection by a universal pcr for bacterial dna and dna sequencing. | pcr using universal bacterial primers and subsequent dna sequence analysis of the pcr product was used to detect beta-haemolytic streptococci in clinical samples. streptococcus pyogenes, streptococcus agalactiae and streptococcus dysgalactiae were identified in 19 primary culture-negative cases of infections from 203 patient samples with detectable bacterial dna. | 2008 | 18584545 |
| structural consideration of the formation of the activation complex between the staphylokinase-like streptococcal plasminogen activator pada and bovine plasminogen. | the characteristics of a streptococcal plasminogen activator (pa) displaying specificity for ruminant plasminogen (plg) were defined using molecular approaches. the 16-kda secreted protein pada was found to be prevalent in streptococcus dysgalactiae subspecies dysgalactiae isolated from cases of bovine mastitis and septic arthritis in lambs. pada was able to activate bovine, ovine and caprine plg, but not human plg. amino acid sequence analysis identified a limited level of homology to other str ... | 2008 | 18588895 |
| prevalence of antimicrobial resistance among bacterial pathogens isolated from cattle in different european countries: 2002-2004. | the project "antibiotic resistance in bacteria of animal origin - ii" (arbao-ii) was funded by the european union (fair5-qlk2-2002-01146) for the period 2003-2005, with the aim to establish a continuous monitoring of antimicrobial susceptibility among veterinary laboratories in european countries based on validated and harmonised methodologies. available summary data of the susceptibility testing of the bacterial pathogens from the different laboratories were collected. | 2008 | 18611246 |
| bacteriocin st91km, produced by streptococcus gallolyticus subsp. macedonicus st91km, is a narrow-spectrum peptide active against bacteria associated with mastitis in dairy cattle. | streptococcus gallolyticus subsp. macedonicus st91km produces a bacteriocin (macedocin st91km) active against streptococcus agalactiae, streptococcus dysgalactiae subsp. dysgalactiae, streptococcus uberis, staphylococcus aureus, and staphylococcus epidermidis. macedocin st91km is, according to tricine-sds page, between 2.0 and 2.5 kda in size. antimicrobial activity remained unchanged after 2 h of incubation at ph 2.0-10.0 and after 100 min at 100 degrees c. the peptide was inactivated after 20 ... | 2008 | 18641698 |
| lambdasa2 prophage endolysin requires cpl-7-binding domains and amidase-5 domain for antimicrobial lysis of streptococci. | streptococcal pathogens contribute to a wide variety of human and livestock diseases. the routine use of antibiotics to battle these pathogens has produced a new class of multidrug-resistant streptococci. thus, there is a need for new antimicrobials. bacteriophage endolysins (peptidoglycan hydrolases) comprise one group of new antimicrobials that are reportedly refractory to resistance development. the lambdasa2 prophage endolysin gene was recently isolated from a group b streptococcal genome, e ... | 2008 | 18673393 |
| spondylodiscitis and paraspinal abscess caused by beta-haemolytic group g streptococci spreading from infected leg ulcers. | we report a case of spondylodiscitis due to streptococcus dysgalactiae subsp. equisimilis spreading from infected leg ulcers. the route of infection could be unequivocally demonstrated by culturing identical isolates from leg wounds, blood culture and intra-surgery specimens from the spine. the present case illustrates the pathogenic potential of group g streptococci also for non-diabetic adults. | 2008 | 18719188 |
| [case of gas gangrene in both legs due to streptococcus dysgalactiae subsp. equisimilis, resulting in amputation of right leg]. | | 2008 | 18788420 |
| electrophoresis studies on the contaminating glycosaminoglycans in commercially available hyaluronic acid products. | hyaluronic acid (ha) samples showing inhibition effect on digestion with testicular hyaluronidase (haase) were found from 16 commercially available ha products, which were supplied from 11 different manufacturers. most of these ha samples (six samples) were derived from the rooster comb, and one sample was derived from the human umbilical cord. ha oligosaccharides produced by exhaustive digestion of these ha samples with testicular haases were monitored by capillary electrophoresis, and we found ... | 2008 | 18803225 |
| isolation of streptococci from milk samples of normal, acute and subclinical mastitis cows and determination of their antibiotic susceptibility patterns. | streptococci are frequently isolated from bovine mastitis in dairy cows with only limited information available on the antimicrobial susceptibility of these organisms. a total of 42 streptococci isolated from 148 milk samples of normal, sub acute and acute bovine mastitis cases. overall, 35% of the strains tested were streptococcus dysgalactiae, streptococcus agalactiae 26%, streptococcus uberis 18 and 4% were enterococcus sp. differences between the number of isolations in acute and sub acute g ... | 2008 | 18819612 |
| detection of mastitis pathogens by analysis of volatile bacterial metabolites. | the ability to detect mastitis pathogens based on their volatile metabolites was studied. milk samples from cows with clinical mastitis, caused by staphylococcus aureus, coagulase-negative staphylococci, streptococcus uberis, streptococcus dysgalactiae, and escherichia coli were collected. in addition, samples from cows without clinical mastitis and with low somatic cell count (scc) were collected for comparison. all mastitis samples were examined by using classical microbiological methods, foll ... | 2008 | 18832205 |
| incidence of mastitis and bacterial findings at clinical mastitis in swedish primiparous cows- influence of breed and stage of lactation. | mastitis is a common disease also among primiparous dairy cows. identification of the extent and type of problem is important to initiate correct control measures. in sweden, unique national production and disease databases are available. the main aim of the study was to investigate the occurrence of mastitis, measured by the annual incidence of veterinary-treated clinical mastitis (vtcm) and geometric mean of monthly milk somatic cell count (scc) recordings in swedish primiparous cows in relati ... | 2009 | 18945561 |
| udder shape and teat-end lesions as potential risk factors for high somatic cell counts and intra-mammary infections in dairy cows. | the association of common bacterial pathogens in milk samples during calving with udder shape or the presence of 'teat-end' lesions was investigated in 240 dairy cows from two herds. sixty-three of 120 cows (53%) in one herd (herd a) and 54/120 animals (45%) in a second herd (herd b) had normal-shaped udders. the remaining animals had udder shapes defined as follows: large pendulous (18% herd a, 26% herd b); large between hindquarter (10% herd a, 17% herd b); overall small (8% herd a, 5% herd b) ... | 2010 | 18951819 |
| antimicrobial susceptibility of udder pathogens from cases of acute clinical mastitis in dairy cows. | to investigate occurrence of acquired antimicrobial resistance in udder pathogens mics in staphylococcus aureus (n=211), coagulase-negative staphylococci (cns) (n=56), streptococcus uberis (n=113), streptococcus dysgalactiae (n=152), streptococcus agalactiae (n=6), escherichia coli (n=163), and klebsiella spp. (n=42) were determined using microdilution. isolates were from a nation wide survey employing strict inclusion criteria. presence of acquired resistance was evaluated by species-specific e ... | 2009 | 19058930 |
| a study of the lesions induced in seriola dumerili by intradermal or intraperitoneal injection of streptococcus dysgalactiae. | fish of the species seriola dumerili were infected experimentally with the pathogen streptococcus dysgalactiae. intradermal (id) injection of s. dysgalactiae resulted in moderate mortality regardless of the dose of bacteria injected, whereas intraperitoneal (ip) injection caused greatest mortality in the group of fish receiving the highest dose of bacteria (10(9) colony forming units/ml). on necropsy examination of affected fish, the most striking change was microabscessation and/or granulomatou ... | 2009 | 19059602 |
| infective arthritis: bacterial 23s rrna gene sequencing as a supplementary diagnostic method. | consecutively collected synovial fluids were examined for presence of bacterial dna (a 700-bp fragment of the bacterial 23s rrna gene) followed by dna sequencing of amplicons, and by conventional bacteriological methods. one or more microorganisms were identified in 22 of the 227 synovial fluids (9,7%) originating from 17 patients. sixteen of the patients had clinical signs of arthritis. for 11 patients molecular and conventional bacterial examinations were in agreement. staphylococcus aureus, s ... | 2008 | 19088916 |
| [septic arthritis due to streptococcus dysgalactiae ssp. equisimilis]. | | 2008 | 19100199 |
| prevalence of pathogens in milk samples of dairy cows with clinical mastitis and in heifers at first parturition. | prevalence of mastitis pathogens in milk samples from dairy cows and heifers was studied over a period of 1 year (aug 2005-aug 2006) in ten dairy herds in germany. milk samples (n=8240) were collected from heifers without clinical mastitis at parturition (n=6915), from primiparous cows with clinical mastitis (n=751) and from older cows with clinical mastitis (n=574). coagulase negative staphylococci (cns) were the predominant group of bacteria isolated (46.8% of samples) from clinically healthy ... | 2009 | 19121235 |
| monitoring major mastitis pathogens at the population level based on examination of bulk tank milk samples. | the objective was to determine the proportions and bacterial counts of major mastitis pathogens in samples of bulk tank milk (btm), as well as to clarify the relationship between these bacteria counts and bulk tank somatic cell count (btscc). the purpose was to judge the importance of the counts of mammary pathogens for btscc at the population level. samples of btm were collected from 268 randomly selected anonymous dairy herds (with approximately 29 000 dairy cows). staphylococcus aureus, other ... | 2009 | 19121238 |
| in vitro efficacy of the novel peptide cect7121 against bacteria isolated from mastitic dairy cattle. | to evaluate the in vitro bactericidal activity of the novel antimicrobial peptide (ap) cect7121 against gram-positive bacteria from mastitic dairy cattle. | 2009 | 19141040 |
| microbial aetiology of acute clinical mastitis and agent-specific risk factors. | a nation wide study on the microbial aetiology of cases of acute clinical mastitis in swedish dairy cows was conducted with the aim to investigate changes in the microbial panorama compared to a previous study performed 1994-1995. another aim was to investigate some agent-specific environmental and individual risk factors. milk samples were collected from 987 udder quarter cases from 829 cows during six 2-month periods from may 2002 to april 2003, and data on risk factors and demography were col ... | 2009 | 19155148 |
| molecular detection of streptococcus pyogenes and streptococcus dysgalactiae subsp. equisimilis. | we developed molecular diagnostic assays for the detection of streptococcus pyogenes (gas) and streptococcus dysgalactiae subsp. equisimilis (sdse), two streptococcal pathogens known to cause both pharyngitis and more invasive forms of disease in humans. two real-time pcr assays coupled with an internal control were designed to be performed in parallel. one assay utilizes a gene target specific to gas, and the other utilizes a gene target common to the two species. both assays showed 2-3 orders ... | 2009 | 19156548 |
| a novel integrative conjugative element mediates genetic transfer from group g streptococcus to other {beta}-hemolytic streptococci. | lateral gene transfer is a significant contributor to the ongoing evolution of many bacterial pathogens, including beta-hemolytic streptococci. here we provide the first characterization of a novel integrative conjugative element (ice), icesde3396, from streptococcus dysgalactiae subsp. equisimilis (group g streptococcus [ggs]), a bacterium commonly found in the throat and skin of humans. icesde3396 is 64 kb in size and encodes 66 putative open reading frames. icesde3396 shares 38 open reading f ... | 2009 | 19168609 |
| population-based study of invasive disease due to beta-hemolytic streptococci of groups other than a and b. | beta-hemolytic streptococci of groups other than a and b (nabs) are increasingly recognized as causes of clinically significant disease, but precise information about this heterogeneous group is lacking. we report the incidence of nabs infection and describe the epidemiologic and clinical characteristics. | 2009 | 19187026 |
| antibacterial effect of plant-derived antimicrobials on major bacterial mastitis pathogens in vitro. | the objective of this study was to investigate the antimicrobial effect of plant-derived antimicrobials including trans-cinnamaldehyde (tc), eugenol, carvacrol, and thymol on major bacterial mastitis pathogens in milk. the minimum inhibitory concentration (mic) and minimum bactericidal concentration (mbc) of the aforementioned compounds on streptococcus agalactiae, streptococcus dysgalactiae, streptococcus uberis, staphylococcus aureus, and escherichia coli were determined. in addition, the bact ... | 2009 | 19307623 |
| influence of streptococcus dysgalactiae surface hydrophobicity on adherence to mammary epithelial cells and phagocytosis by mammary macrophages. | bacterial surface hydrophobicity (sh) plays a role in adhesion of bacteria to host surfaces and ingestion by phagocytic cells. streptococcus dysgalactiae (n = 60) isolated from bovine intramammary infections were examined for expression of sh after growth in todd-hewitt broth (thb) and thb supplemented with skim milk, whey, lactose, and casein. strains were significantly more hydrophobic after growth in thb and thb plus whey and more hydrophilic after growth in thb plus skim milk. both trypsin a ... | 1996 | 8779807 |
| invasion of bovine mammary epithelial cells by streptococcus dysgalactiae. | two strains of streptococcus dysgalactiae, isolated from cows with mastitis, were assayed for their ability to invade, multiply, and induce damage to a bovine mammary epithelial cell line, mac-t. invasion of s. dysgalactiae into mac-t cells was time-dependent, and invasion was inhibited in a dose-dependent manner by cytochalasin b and d, but not by colchicine. the invasion process did not appear to affect viability of mammary epithelial cells, but cellular damage was induced, as indicated by a t ... | 1995 | 7673520 |
| a protein g-related cell surface protein in streptococcus zooepidemicus. | this work describes the cloning and sequencing of a gene encoding a plasma protein receptor from streptococcus zooepidemicus. this receptor, termed protein zag, is a 45-kda protein that binds alpha 2-macroglobulin (alpha 2m), serum albumin, and immunoglobulin g (igg). the igg-binding activity is located in the c-terminal part of the molecule and is mediated by two repeated domains highly homologous to each other as well as to the corresponding domains in streptococcal type iii fc receptors. the ... | 1995 | 7542636 |
| mag, a novel plasma protein receptor from streptococcus dysgalactiae. | the gene encoding a plasma protein receptor from streptococcus dysgalactiae has been cloned and sequenced. the gene product, with a predicted molecular mass of approx. 44 kda, binds alpha 2-macroglobulin (alpha 2 m), serum albumin and immunoglobulin g (igg). by subcloning and expressing various parts of the gene as fusion proteins, we found that the three binding activities reside in discrete domains of the protein. the single igg-binding domain, localized in the c-terminal part of the molecule, ... | 1994 | 7515368 |
| post-milking iodine teat skin disinfectants. 2. new intramammary infection rates. | use of an iodine teat dip containing 5000 mg available iodine/l (mg avi/l) resulted in a significant reduction in the number of new staphylococcus aureus infections in a lactating herd, while no significant reduction was found with a disinfectant containing only 1000 mg avi/l. when streptococcus dysgalactiae was used as the challenge organism, the rate of new infection was extremely low, and no reduction in levels of new infection were found with either disinfectant. the pathogenicity of the str ... | 1980 | 7189530 |
| post-milking iodine teat skin disinfectants. i. bactericidal efficacy. | an iodine teat skin disinfectant tested in lactating cows over a range of concentrations, 100 to 10 000 mg available iodine/l(mgavi/l) was found bactericidally effective against staphylococcus aureus when containing 1000 mg avi/l or greater. against streptococcus dysgalactiae 5000 mg avi/l or greater was bactericidally effective. the addition of glycerine to a disinfectant containing 5000 or 1000 mg avi/l at levels of 225 ml/l and 105 ml/l, respectively, resulted in a reduction in bactericidal e ... | 1980 | 7189529 |
| susceptibility of the bovine udder to bacterial infection in the dry period. | the teats of 18 cows were externally exposed to infection with mastitis organisms by dipping them daily for 1 or 2 weeks in a mixed suspension of streptococcus dysgalactiae and str. uberis at the start, the middle or the end of the dry period. the teat sinuses of quarters which remained uninfected after external exposure at the beginning or the middle of the dry period were then infused with the same strains of streptococci. of the 9 quarters infected following external exposure 8 occurred in an ... | 1980 | 7189528 |
| effect of duration of teat cup liner closure per pulsation cycle on bovine mastitis. | measurements of teat end expansion and contraction times from step changes in pressure suggest that teat ends require a minimal duration of liner closure for response. effect of duration of liner closure per pulsation cycle on susceptibility of the udder to infection was tested. four durations of liner closure (liner more than half closed) were applied: zero, .17, .34, and .51 s per pulsation cycle. for the latter three treatments, duration of the liner more than half open was .66 s per pulsatio ... | 1981 | 7037886 |
| milk culture results in a large norwegian survey--effects of season, parity, days in milk, resistance, and clustering. | a nationwide random computerized assignment survey that included 3,538 sets of 4 quarter milk samples from 2,834 dairy cows was conducted during 2000. every fifth cow from every 50th herd was randomly selected for sampling and culture during each quarter of the year. milk culture results of pathogens known to be related to mastitis were recorded regardless of whether mastitis had been indicated by any inflammatory measure or not. farmers were blinded to all test results to minimize any potential ... | 2006 | 16507696 |
| comparison of antibiotic resistance of udder pathogens in dairy cows kept on organic and on conventional farms. | there has been a rapid rise in the emergence of multi-drug-resistant pathogens in the past 10 to 15 yr and some bacteria are now resistant to most antimicrobial agents. antibiotic use is very restricted on swiss organic dairy farms, and a purely prophylactic use, such as for dry cow mastitis prevention, is forbidden. a low prevalence of antibiotic resistance in organic farms can be expected compared with conventional farms because the bacteria are infrequently or not exposed to antibiotics. the ... | 2006 | 16507693 |
| analysis of hyaluronan content in chondroitin sulfate preparations by using selective enzymatic digestion and electrospray ionization mass spectrometry. | two important glycosaminoglycans (gags) with structural roles in the body's cartilage are hyaluronan (ha) and chondroitin sulfate (cs). a simple mass spectrometric method for determining the amount of ha that may be present in isolated cs samples is presented in this article. samples are subjected to selective enzymatic digestion using a bacterial hyaluronidase (ha lyase, ec 4.2.2, from streptococcus dysgalactiae) specific for ha. undigested cs gag is then removed by centrifugal filtration, and ... | 2005 | 16081034 |
| clonal relationships between invasive and noninvasive lancefield group c and g streptococci and emm-specific differences in invasiveness. | lancefield group g and group c streptococci (ggs and gcs, respectively) are pathogens responsible for a number of life-threatening infections. a collection of 116 recent (1998 to 2004) invasive (n = 28) and noninvasive (n = 88) ggs and gcs clinical isolates from portugal were characterized. all isolates were identified as streptococcus dysgalactiae subsp. equisimilis and characterized by emm typing and dna macrorestriction profiling using pulsed-field gel electrophoresis (pfge). emm typing revea ... | 2006 | 16517864 |
| use of the surface proteins gapc and mig of streptococcus dysgalactiae as potential protective antigens against bovine mastitis. | streptococcus dysgalactiae is a significant pathogen associated with bovine mastitis in lactating and nonlactating dairy cows, causing a severe inflammatory response of the mammary gland, which results in major economic losses to the dairy industry. two proteins from s. dysgalactiae strain sdg8 were tested for their protective capacity against a homologous bacterial challenge in a dry cow model. the first was a bovine plasmin receptor protein (gapc), which shares 99.4% sequence identity to the p ... | 2004 | 15284888 |
| [a case of severe necrotizing cellulitis caused by group g streptococcus dysgalactiae subsp. equisimilis]. | group g streptococcus (ggs) is infrequently associated with severe invasive soft tissue infection and toxic shock syndrome. a 74-year-old woman with a history of lymphedema of the lower extremities after surgical and radiation therapy for uterine cancer and diabetic mellitus and admitted for swelling of the right leg, fever, and dyspnea. she presented with shock and necrotizing cellulitis of the right lower extremity. laboratory tests showed leukocytepenia, acute renal and liver dysfunction, and ... | 2006 | 16922490 |
| staphylococcus aureus and streptococcus dysgalactiae in norwegian herds after introduction of selective dry cow therapy and teat dipping. | the objective was to promote a reduction in the prevalence of staphylococcus aureus and streptococcus dysgalactiae after 2 years of selective dry cow therapies and teat dipping/external teat sealant implementation. three different dry cow treatments, one long-acting and two short-acting penicillin-based products were tested at herd level together with a negative control teat dipping group, an iodine teat dipping group and dryflextrade mark, an external teat sealant. the regimes were independentl ... | 2007 | 16978433 |
| [emm typing by genetic identification of streptococcus dysgalactiae subsp. equisimilis and susceptibility to oral antibiotics]. | a total of 593 beta-hemolytic streptococci belonging to lancefield group a (gas), group c (gcs) or group g (ggs) according to agglutination tests were collected from 11 medical institutions between september 2003 and october 2005. in total, 128 strains were identified as streptococcus dysgalactiae subsp. equisimilis (s. equisimilis) using physiological tests. of these strains, 5 strains were agglutinated to lancefield group a, 17 strains to group c, and 106 strains to group g. most of these stra ... | 2006 | 17073261 |
| characterization of lancefield group c streptococcus dysgalactiae isolated from farmed fish. | a lancefield group c streptococcal (gcs) infection caused by streptococcus dysgalactiae that is characterized by severe necrotic lesions of the caudal peduncle has been an increasing cause of mortality in farmed fish such as amberjack, seriola dumerili, and yellowtail, seriola quinqueradiata, in the southern part of kyushu, japan. in this study, enzymatic profiles of gcs strains from fish and mammals were investigated using the api zym system, and genotypic characterization of gcs strains was pe ... | 2006 | 17169114 |
| streptococcus dysgalactiae isolates at calving and lactation performance within the same lactation. | the objective of the study was to investigate the association between early lactation streptococcus dysgalactiae isolates and milk yield, somatic cell count (scc), clinical mastitis, and culling in the same lactation. the 178 commercial dairy herds were randomly placed into 3 penicillin- or penicillin-dihydrostreptomycin-based dry-cow treatments and 3 different postmilking teat disinfection groups-negative control, iodine, or external teat sealant. all cows were sampled in early lactation, and s ... | 2007 | 17235154 |
| [a case of bacterial pneumonia caused by streptococcus dysgalactiae subsp. equisimilis, showing patchy consolidations resembling organizing pneumonia]. | in december, 2001, a 67-year-old woman was given a diagnosis of having systemic sclerosis and organizing pneumonia. steroid treatment improved her condition, and she received no further medication for approximately three years thereafter. in october 2005, she visited kurume university hospital because of cough and fever. chest x-ray film and high-resolution computed tomography (hrct) showed bilateral patchy consolidation with air-bronchogram sign and ground-glass opacities, predominantly in the ... | 2007 | 17313025 |
| therapeutic effects of systemic or intramammary antimicrobial treatment of bovine subclinical mastitis during lactation. | the short- and long-term treatment efficacy of administrating penicillin for bovine subclinical mastitis during lactation when using intramuscular (im; 9.5 mg [15,000 iu]/kg bodyweight of benzyl penicillin potassium) injections twice daily for 5 days, or intramammary (imm; 0.3g [300,000 iu] penethamate hydroiodide) administration once daily for 5 days was compared with a control group receiving no treatment. one hundred and twenty-six cows met the inclusion criteria, which were lack of clinical ... | 2008 | 17320434 |
| intracellular killing of mastitis pathogens by penethamate hydriodide following internalization into mammary epithelial cells. | penethamate hydriodide was highly effective in killing streptococcus uberis, streptococcus dysgalactiae subsp. dysgalactiae and staphylococcus aureus that internalized mammary epithelial cells. at higher concentrations (32 microg/ml to 32 mg/ml), killing rates ranged from 85% to 100%. at lower concentrations (0.032 microg/ml to 3.2 microg/ml), killing rates ranged from 0 to 80%. results of this proof-of-concept study demonstrated that: (1) penethamate hydriodide is capable of entering mammary ep ... | 2007 | 17348901 |
| the other group g streptococcus: increased detection of streptococcus canis ulcer infections in dog owners. | beta-hemolytic lancefield group g streptococcus dysgalactiae and streptococcus canis cannot be distinguished when only lancefield typing is performed. phenotypic testing and 16s rrna gene sequencing identified s. canis associated with ulcer infections in dog owners. because s. canis may be incorrectly identified (published biochemical descriptions are inconsistent), there may be an underestimation of the true number of infections. identification of group g streptococci to the species level could ... | 2007 | 17475761 |
| crystal structure of streptococcus dysgalactiae-derived mitogen reveals a zinc-binding site and alterations in tcr binding. | bacterial superantigens are protein toxins with an ability to cause serious diseases in humans by activating a large number of t cells. streptococcus dysgalactiae-derived mitogen (sdm) is a novel superantigen that is distinct from other known superantigens based on phylogenetic analysis. the x-ray structure of sdm has been determined at 1.95 a resolution. sdm shares the same characteristic fold with other superantigens, but it shows a major structural difference due to the lack of the alpha5 hel ... | 2007 | 17900619 |
| risk factors for isolation of staphylococcus aureus or streptococcus dysgalactiae from milk culture obtained approximately 6 days post calving. | milk culture results at approximately 6 d post calving were assessed in a 2-year retrospective single-cohort study in 178 norwegian herds. a combined teat dipping and selective antibiotic therapy trial was performed in these herds where cows with composite milk somatic cell count (cmscc) >100,000 cells/ml before drying-off (geometric mean of the last three cmscc test-days) and isolation of staphylococcus aureus or streptococcus dysgalactiae were selected for either short-acting lactation antibio ... | 2008 | 18226294 |
| streptococcal cellulitis following preparation of fresh raw seafood. | we describe three zoonotic streptococcal soft tissue infections resulting from fresh seafood contact. one was a localized thumb infection with streptococcus iniae in an immunocompetent healthy young male resulting from a puncture wound from a crab pincer. the other two were cases of ascending upper limb cellulitis associated with bacteraemia in mastectomy patients. one of these infections was caused by s. iniae while the other was caused by streptococcus dysgalactiae subsp. dysgalactiae, a speci ... | 2009 | 19309483 |
| association of streptococcus pluranimalium with valvular endocarditis and septicaemia in adult broiler parents. | the genus streptococcus consists of more than 60 species, but only streptococcus equi subspecies zooepidemicus, streptococcus gallolyticus ssp. gallolyticus, streptococcus gallinaceus, streptococcus dysgalactiae, streptococcus mutans and streptococcus suis have been isolated from poultry. during investigations of the aetiology of increased mortality in broiler parent stock at the end of production, pure cultures of streptococcal-like organisms that could not be classified among these six species ... | 2009 | 19322715 |
| genetic relationships deduced from emm and multilocus sequence typing of invasive streptococcus dysgalactiae subsp. equisimilis and s. canis recovered from isolates collected in the united states. | beta-hemolytic group c and g streptococci cause a considerable invasive disease burden and sometimes cause disease outbreaks. little is known about the critical epidemiologic parameter of genetic relatedness between isolates. we determined the emm types of 334 streptococcus dysgalactiae subsp. equisimilis isolates, and attempted emm typing of 5 streptococcus canis isolates from a recent population-based surveillance for invasive isolates. thirty-four emm types were observed, including one from s ... | 2009 | 19386831 |