Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| purification and partial characterization of neuraminidase from type iii group b streptococci. | extracellular neuraminidase from a type iii fresh clinical isolate of a group b streptococcus was purified by a combination of salt fractionation, affinity chromatography of affi-gel blue, ion-exchange chromatography on diethylaminoethylcellulose, and gel filtration on sephacryl s-200. these procedures yielded enzyme which was purified approximately 1,000-fold compared with the enzyme found in the original supernatant fluid. this type iii streptococcal neuraminidase had a molecular weight of app ... | 1980 | 6998945 |
| micro-indirect hemagglutination test for detection of antibodies to the ibc protein of group b streptococcus. | a micro-indirect hemagglutination test was developed for detecting antibody against the ibc protein of group b streptococcus. formalin-preserved, tanned sheep erythrocytes were sensitized with a partially purified preparation of ibc protein from a type ic strain of group b streptococci. a total of 76% of 103 sera from pregnant and nonpregnant women had demonstrable antibody against this protein, with titers ranging from 10 to 320. examination of five pairs of mother and cord sera revealed passiv ... | 1980 | 6999011 |
| indirect sandwich enzyme-linked immunosorbent assay for rapid detection of streptococcus pneumoniae type 3 antigen. | an indirect sandwich enzyme-linked immunosorbent assay for the detection of the polysaccharide antigen of type 3 pneumococcus (sss-iii) is reported. polystyrene balls with attached anti-sss-iii antibody serve as the solid phase, and antigen is detected using an alkaline phosphatase-labeled antiglobulin conjugate. the reaction is quantitated by spectrophotometry. concentrations of antigen are estimated by comparison with standard curves prepared with purified sss-iii. for this assay, the practica ... | 1980 | 7000815 |
| the natural history of group b streptococcal colonization in the pregnant woman and her offspring. i. colonization studies. | a longitudinal study of colonization by group b streptococcus (gbs) was conducted in 93 pregnant women and 92 of their infants. positive cultures were obtained from vaginal swab specimens on at least one occasion during pregnancy from 20.4% of the women. three types of carriage were observed: chronic, transient, and intermittent. at the time of delivery, 12.9% of the mothers were colonized by gbs. gbs colonization occurred in 41.7% of the infants of the mothers colonized intrapartum. only 1.2% o ... | 1980 | 6989247 |
| prevalence of type-specific group b streptococcal antibody in pregnant women. | immunoglobulin g antibody against the four major serotypes of group b streptococcus was measured by indirect immunofluorescence in the sera of 200 consecutive pregnant women seen in the obstetric screening clinic of an urban teaching hospital. antibody was detectable in 26% of undiluted sera against serotype ia, 52% against serotype ib, 82% against serotype ii, and 45% against serotype iii. only 9% had antibody against all four gbs types. when serotype-specific antibody prevalences in 108 women ... | 1980 | 6989972 |
| faecal carriage of group b streptococci. | consecutive stool samples from 116 female and 98 male patients (both adults and children), and rectal and vaginal swabs from 28 and 53 cases respectively, were quantitatively cultured for group b streptococci using islam's medium. group b streptococcus was recovered from 5% and 2% of faeces in female and male patients respectively, and the colony counts ranged from 10(2) to 10(3)/g. in women, the faecal carriage rate was 6%, which was significantly lower than the rectal carriage rate (p 0.02), s ... | 1980 | 7000829 |
| group b streptococcus and puerperal sepsis. | 1980 | 7004191 | |
| identification of tetracycline-resistant r-plasmids in streptococcus agalactiae (group b). | in this report, 30 tetracycline-resistant clinical isolates of group b streptococcus were examined to assess the extent to which tetracycline resistance is plasmid mediated. of these, 27 showed no physical or genetic evidence of plasmid-mediated resistance; however, one conjugative and two small (3.5 x 10(6)-dalton) multicopy non-self-transmissible tetracycline resistance plasmids were identified. the conjugative plasmid was transmissible to streptococcus faecalis as well as to streptococcus aga ... | 1980 | 7004347 |
| early onset group b streptococcus neonatal septicemia and respiratory distress syndrome: characteristic features of assisted ventilation in the first 24 hours of life. | clinical features and assisted ventilation (av) aspects of 10 neonates with early onset group b streptococcus (gbs) septicemia were compared with those of 12 randomly selected newborns with severe respiratory distress syndrome (rds). initial chest radiograph in the gbs group was interpreted as rds in seven of 10 cases. although 9 of the 10 neonates with early onset gbs were preterm, they were of a significantly higher mean birth weight (p < 0.01) and the mean gestational age (p < 0.005). the dur ... | 1980 | 7004777 |
| community acquisition of group b streptococcus by infants of colonized mothers. | forty-six infants of women known to be colonized by group b streptococcus (gbs) during the third trimester of pregnancy were not colonized by gbs at the time of discharge from the hospital nursery. at 6 to 8 weeks of age, two of these infants (4.3%) were found to harbor gbs. the rate of community acquisition of gbs by uncolonized infants appears to be low. | 1980 | 7005854 |
| changes in the vaginal and rectal carriage of group b streptococci during pregnancy. | the group b streptococcus carrier status of pregnant women appears to be relatively unstable. by using multiple low vaginal and rectal samples cultured on 2 or more media, an overall carrier rate of 38% was found in 187 women. sequential samples commonly showed changes in the nature of the carrier status with time. more carriers were detected late in pregnancy; women giving negative results early in pregnancy often produced positive cultures later and there was a significant tendency towards rec ... | 1980 | 6992763 |
| properties and transforming activities of two plasmids in streptococcus pneumoniae. | two plasmids from group b streptococcus were introduced into pneumococcus (streptococcus pneumoniae) and examined for copy number, stability, and some features of the process by which they transform pneumococcal recipients. the 3.6 mdal pmv158 (tet) was present at a minimum of 12 to 16 copies per chromosome and was never observed to be cured. the 20 mdal pip501 (cat erm) had a minimum copy number of 3 to 4 per chromosome and was lost spontaneously at a frequency near 0.03 per division. the prese ... | 1980 | 7007819 |
| adherence of influenza a viruses to group b streptococci. | previous studies have revealed a similarity between hemadsorption and bacterial adherence to virus-infected cells. this observation led to the question of whether mature virions can interact directly with bacteria in a manner similar to hemagglutination. thus, hemagglutination inhibition, direct immunofluorescence, and scanning electron microscopy were used to detect adherence of five prototype strains of influenza a virus to 34 strains (five serologic prototypes and 29 isolates from ill infants ... | 1980 | 6989927 |
| comparison of assays for antibody to group b streptococcus, type iii. | 1980 | 6989928 | |
| loss of plasmid-mediated resistance after conversion of a group b streptococcus strain to a stable cell wall deficient variant. | a group b streptococcus strain carrying plasmid dna determining resistance to several drugs was converted by penicillin to cell wall (cw) defective and then to cw deficient variants (l-forms). the stable cw deficient variants became susceptible to antibiotics in study. dye-buoyant density analysis of the dna of cw deficient variants showed that the loss of antibiotic resistance was associated with the loss of extrachromosomal dna. | 1979 | 382949 |
| mixed bacterial and fungal meningitis in a neonate. | mixed infections of the central nervous system occurring in children without underlying neurological disease may be more frequent than previously suspected. in this case report, a neonate whose cerebrospinal fluid culture at 24 hours showed group b streptococcus only, was found on postmortem examination at six days of age to have disseminated candidiasis with cerebral abscesses. the degree of systemic involvement in this newborn suggested intra-uterine acquired candidiasis. early diagnosis of po ... | 1979 | 574475 |
| plasmids mediating multiple drug resistance in group b streptococcus: transferability and molecular properties. | 1979 | 382199 | |
| group b streptococcal colonization and antibody status in lower socioeconomic parturient women. | this investigation was undertaken to determine the prevalence of group b streptococcal vaginal and throat colonization among lower socioeconomic pregnant women and the antibody concentration to the capsular polysaccharide antigen of type iii group b streptococcus in their sera. group b streptococci were recovered from 28.6 per cent of the 112 women studied; vaginal colonization was detected in 23.4 per cent, throat colonization in 4.7 per cent, and colonization at both sites in 0.9 per cent of t ... | 1979 | 369376 |
| opsonic specificity of human antibody to the type iii polysaccharide of group b streptococcus. | the functional significance of vaccine-induced or naturally acquired antibody to the capsular polysaccharide of type iii group b streptococcus was determined in human sera by means of an opsonophagocytic assay. sera containing a sufficient concentration of type-specific antibody and endogenous serum complement caused a significant reduction (greater than 1 log10) in colony-forming units for each of 22 type iii clinical isolates after incubation for 40 min. in contrast, serum with a very low conc ... | 1979 | 396335 |
| [study of vaginal colonization by group b streptococcus. importance of the transportation of samples and means of isolation]. | 1979 | 396609 | |
| changes and changing concepts in the biology of group a streptococci and in the epidemiology of streptococcal infections. | concepts of the cellular structure of group a streptococci have been modified by the recognition of surface fimbriae and by problems with the older view of a layered arrangement of cell wall components. evidence of genetic drift of serologic types and of some increase in the prevalence of erythromycin-resistant strains has appeared. a curiois bimodal age distribution for streptococcal pharyngitis and an increase in the prevalence of non-group a strains has been detected. despite repeated challen ... | 1979 | 399388 |
| neonatal group b streptococcal infection. | group b streptococcus is now recognized as a major cause of serious neonatal infection. between january 1973 and july 1979 35 infants with 'early onset' group b streptococcal infection were admitted to the special nursery, aberdeen maternity hospital. ten infants died, nine of whom were of low birth weight. current research is directed towards defining 'high risk' groups and establishing an effective means of prevention. the concept of early administration of antibiotics to 'high risk' infants, ... | 1979 | 399902 |
| group b streptococcal sepsis with osteomyelitis and arthritis. its occurrence with acute heart failure. | in a 20-day-old female infant, bacteremia, osteomyelitis, and pyogenic arthritis developed due to infection with group b streptococcus, type ic. she had an unusual clinical presentation with overwhelming sepsis and acute congestive heart failure. | 1979 | 382836 |
| countercurrent immunoelectrophoresis in group b streptococcal disease. | countercurrent immunoelectrophoresis was used for the detection of group- and type-specific antigens in the body fluids of 61 infants from st. louis and indiana with group b streptococcal infections. urine concentrated using an amicon filter yielded the highest percentage of positive results; 81% were positive in the st louis group. when three body fluids (urine, csf, and blood) were available, at least one was positive for group b streptococcus in 95% of the cases. this study demonstrates the a ... | 1979 | 386239 |
| vertical transmission of group b streptococcus. relation to intrauterine fetal monitoring. | a prospective study of 70 mother-infant pairs was designed to evaluate vertical transmission of group b streptococcus (gbs) in relation to the use of intrauterine fetal monitors (iufms). multiple-site cultures obtained from mothers during the intrapartum interval and those obtained from infants on day 1 and at discharge or day 4 were plated on a selective medium. thirteen (27.1%) of 48 iufm-exposed women vs seven (31.8%) of 22 non-iufm-exposed women had gbs at one or more sites. the gbs coloniza ... | 1979 | 376881 |
| neonatal lung abscess. a report of six cases. | six infants 8 weeks of age or younger had lung abscesses treated in our medical center during the 20-year period of from 1957 to 1977. the duration of symptoms prior to diagnosis, the etiologic organisms, and the therapeutic approach differ from those in older children and adults. the pathogenic organisms were escherichia coli, group b streptococcus, and klebsiella pneumoniae, initial therapy with a penicillin and an aminoglycoside are indicated until identification and susceptibility results ar ... | 1979 | 382838 |
| malignant group b streptococcal endocarditis associated with saline-induced abortion. | a 20-year-old woman developed acute group b streptococcal endocarditis following saline-induced abortion. in the pre-antibiotic era, most cases of group b streptococcal endocarditis occurred in parturient or postabortal women. currently, this disease is rarely described in obstetrical patients, and no previous cases following saline-induced abortion have been reported. purulent pericarditis and a perivalvular abscess were present in our patient and represent only the second instance in which the ... | 1979 | 389576 |
| myocardial abscess and fatal sepsis caused by group b streptococcus (s agalactiae) in an adult. | 1979 | 390721 | |
| human immunity to group b streptococci measured by indirect immunofluorescence: correlation with protection in chick embryos. | an indirect immunofluorescence (if) assay has been developed as a useful semiquantitative method for determination of type-specific igg antibody in human sera to the five serotypes of group b streptococcus. antibody titers measured by if correlated with passive protection in chick embryos, and antibody titers associated with chick embryo protection were delineated. except for types ia and ic, if antibody to each of the streptococcal types was completely absorbed by homologous strains, and antibo ... | 1979 | 393777 |
| ampicillin prevents intrapartum transmission of group b streptococcus. | early-onset group b streptococcus (gbs) disease in the infant is acquired by vertical transmission from the mother colonized with gbs. thirty-four women colonized with gbs were treated with intravenous ampicillin sodium during labor. none of their infants were colonized with gbs at birth or within 48 hours. twenty-four women colonized with gbs received no antibiotic therapy; 14 (58%) of their infants were colonized with gbs at birth or by 48 hours. this difference was highly significant. mechani ... | 1979 | 368363 |
| recurrent group b streptococcal infections: report of three cases. | the group b streptococcus has become a leading cause of neonatal infection. despite the increasing incidence of this infection, recurrence in the same patient is extremely uncommon. this report describes three infants with proved recurrent group b streptococcal disease. all patients were treated with benzylpenicillin for at least 10 days, but, after a symptom-free interval, each developed symptoms again. whether the illness in these patients represents a relapse or a true reinfection is difficul ... | 1979 | 368966 |
| a review of laboratory methods for identification of group b streptococci (streptococcus agalactiae). | a selected review is presented of the history of group b streptococcal infections and the laboratory tests used to identify group b streptococcus (streptococcus agalactiae), an opportunistic pathogen which causes serious infections in newborn infants and compromised patients in other age groups. its isolation may be increased by growth in a selective medium. the methods for group b streptococci identification include the hydrolysis of sodium hippurate, the camp reaction, pigment production, and ... | 1979 | 371403 |
| electron microscopic definition of surface antigens of group b streptococcus. | strains representing each of the five serologically distinct types of group b streptococcus and variant strain 090r, which is devoid of type-specific polysaccharide, were studied by electron microscopy after incubation with various ferritin-conjugated antibodies. ferritin-conjugated types ia, ii and iii antibodies localized on homologous cells in a pattern that defines the capsular location of the type ia, ii, and iii polysaccharide antigen. type ib and ic cells have surface antigens to which fe ... | 1979 | 374641 |
| suprarenal abscess due to group b streptococcus. | 1979 | 376807 | |
| epidemiology of the group b streptococcus: maternal and nosocomial sources for infant acquisitions. | repeated bacteriologic observations were made in 462 newborn infants and correlated with similar data from their mothers to evaluate the relative contributions of the birth canal and the hospital environment to acquisition of group b streptococci in the first few days of life. fifty-eight percent of infants whose mothers were intrapartum carriers acquired streptococci in comparison with 12% of those whose mothers were noncarriers. acquisitions from the birth canal were not influenced by the rou ... | 1979 | 381619 |
| immunoprecipitation and opsonic cross-reaction between type-14 pneumococcus and group-b streptococcus type iii. | antisera directed against type-14 pneumococcus was opsonic for several strains of type-iii group-b streptococcus. furthermore, the polysaccharide antigen in the polyvalent pneumococcal vaccine reacted to form precipitation lines with antisera directed against type-14 pneumococcus and group-b streptococcus type iii immunisation with currently available pneumococcal vaccine may provide opsonic antibody against group-b streptococci and provide a method of preventing neonatal group-b streptococcal i ... | 1979 | 84130 |
| mouse protection test for group b streptococcus type iii. | the mouse model has been used previously for the study of protection against challenge with strains of group b streptococcus types ia, ib, and ic, but investigators have not yet been successful in causing lethal disease when type iii strains are inoculated. in this study, six clinical isolates belonging to serotype iii were lethal in seven-week-old outbred albino mice; the 50% lethal dose (ld50) for mice tested ranged from 1.8 x 10(4) to 4.6 x 10(6). in contrast, a laboratory prototype strain of ... | 1979 | 88492 |
| perinatal infections: prevention of long-term sequelae. | all the congenital infections and most of the natal and postnatally acquired infections of man are associated with disease of the central nervous system and long-term sequelae in the survivors. the most important perinatal pathogens in this regard are group b streptococcus, escherichia coli and other coliform bacteria, cytomegalovirus, toxoplasma gondii and herpes simplex virus. all these agents are the subject of active and, in some instances, promising investigation. the strategies for prevent ... | 1979 | 233357 |
| comparison of staphylococcal coagglutination, latex agglutination, and counterimmunoelectrophoresis for bacterial antigen detection. | soluble antigens of haemophilus influenzae type b, streptococcus pneumoniae, neisseria meningitidis, and group b streptococcus were looked for in cerebrospinal fluid, serum, and urine by using the staphylococcal coagglutination test, latex agglutination test, and counterimmunoelectrophoresis. the staphylococcal coaggultination and latex agglutination tests were more sensitive than counterimmunoelectrophoresis in identifying antigens of h. influenzae type b, s. pneumoniae, and n. meningitidis. no ... | 1979 | 34622 |
| immunochemical cross-reactions between type iii group b streptococcus and type 14 streptococcus pneumoniae. | serological cross-reactions between certain streptococci and some serotypes of streptococcus pneumoniae have been reported. these studies detail the serological cross-reactivity observed between hot hcl-extracted group b streptococcus type iii (gbs iii) antigens and s. pneumoniae type 14 (pn 14) polysaccharide. similar electrophoretic migration patterns of gbs iii and pn 14 were observed when either type-specific bgs iii antisera or pneumococcal omniserum was utilized to precipitate these antige ... | 1979 | 40876 |
| effect of storage processes on the bacterial growth-inhibiting activity of human breast milk. | human breast milk samples were collected from lactating mothers, and aliquots were maintained at room temperature, frozen, and pasteurized. samples were inoculated with 10 to 50 colony-forming units per milliliter (cfu/ml) of escherichia coli or group b streptococcus, and incubated at 37 c. quantitative growth was measured at eight and 24 hours. no inhibitory activity was demonstrated by control broth, commercial formula, and pasteurized breast milk, which had a rapid logarithmic growth to a max ... | 1979 | 375180 |
| immunodeterminant specificity of human immunity to type iii group b streptococcus. | the type iii polysaccharides of group b streptococcus in its native state chemically consists of glucose, galactose, glucosamine, and sialic acid. the core of this polysaccharide lacks sialic acid and precipitates with type iii antiserum to give a partial identity with the precipitate between the native antigen and this serum. the core determinant is immunochemically similar to the capsular polysaccharide of type xiv streptococcus pneumoniae, while the native type iii group b streptococcal polys ... | 1979 | 84042 |
| isolation of type-specific polysaccharide antigen from group b type ib streptococci. | group b streptococcus type ib (strain h36b) was subjected to digestion with extracellular muralytic enzymes prepared from streptomyces albus. type ib-specific polysaccharide antigen was isolated from the lysate by alcohol precipitation and sepharose 6b chromatography. the purified type ib antigen has a kd value of 0.31 on a sepharose 4b column and contains four sugars, galactose, glucose, n-acetyl glucosamine, and sialic acid in a molar ratio of 2.05:0.86:1.00:0.90. acid treatment (ph 2.0) of th ... | 1979 | 33225 |
| indirect sandwich enzyme-linked immunosorbent assay for rapid detection of haemophilus influenzae type b infection. | we report the development and testing of an enzyme-linked immunosorbent assay with excellent sensitivity for the detection of haemophilus influenzae type b (hi(b)) antigen in clinical specimens from patients with hi(b) meningitis. the assay, an indirect sandwich technique, uses polystyrene balls as a solid phase and an alkaline phosphatase-labeled goat anti-rabbit globulin conjugate. specimens are incubated with polystyrene balls armed with burro anti-hi(b) antiserum, and recognition antibody is ... | 1979 | 393714 |
| group b beta-hemolytic streptococci in an intramural neonatal population. | an intramural population of 2480 neonates (88.7% of total births at the grace maternity hospital, halifax, canada) was studied by rectal swabs collected within one hour after birth. group b streptococci were recovered from 54 (21.7/1000 livebirths). of these, 12(4.8/1000 livebirths) became symptomatic; all were term infants and none was born after prolonged membrane rupture. two infants with pneumonia (0.8/1000) had severe life threatening illness; one was infected with group b streptococcus, se ... | 1978 | 345422 |
| immunochemical characterization of native polysaccharides from group b streptococcus: the relationship of the type iii and group b determinants. | 1978 | 80423 | |
| prospects for the prevention of bacterial meningitis with polysaccharide vaccines. | most suppurative infections of the meninges are caused by five bacterial species: escherichia coli, haemophilus influenzae type b, streptococcus pneumoniae, neisseria meningitidis, and group b streptococcus. the immune response of adults to pneumococcal capsular polysaccharides has been studied in great detail and their responses to meningococcal and h. influenzae type b capsular polysaccharides are quite similar. immune responses of adults to e. coli and group b streptococcal antigens are disap ... | 1978 | 31985 |
| nasal colonization of infants with group b streptococcus associated with intrauterine pressure transducers. | the rate of nasal colonization with group b streptococcus in infants cultured at the time of discharge from the nursery rose significantly during a four-month interval. investigation of this trend resulted in detection of group b streptococci in the domes of two intrauterine pressure transducers (ipts). subsequent routine sterilization of ipt domes after each maternal use was associated with a decline in infant group b streptococcal colonization to the usual endemic rate in the nursery. retrospe ... | 1978 | 105055 |
| immunogenicity of polysaccharides from type iii, group b streptococcus. | the immunogenicity and safety of two polysaccharides isolated from type iii, group b streptococcus, were tested in adults selected for existing low concentrations of natural antibody to the capsular polysaccharide of this organism. both vaccine preparations (trichloroacetic acid and edta) were found to lack pyrogenicity and toxicity for experimental animals. a single 50-microgram subcutaneous injection of either polysaccharide in human subjects elicited significant increase in antibody concentra ... | 1978 | 96132 |
| osteomyelitis due to group b streptococcus in a diabetic adolescent. | 1978 | 344851 | |
| streptococcal endocarditis initially seen as septic arthritis. | two patients were initially seen with culture-positive streptococcal arthritis as an early manifestation of bacterial endocarditis. the organisms were an alpha-hemolytic, nongroup d streptococcus and a beta-hemolytic, group b streptococcus. one patient had a persistent septic monarthritis; the other had migratory arthritis in which a positive synovial culture was followed by a negative culture from the same joint before antimicrobial treatment was started. this experience suggests that some ster ... | 1978 | 348136 |
| group b streptococcus endocarditis in a prosthetic valve. | 1978 | 354543 | |
| [group b streptococcus infections during the neonatal period (author's transl)]. | nowadays, in severe infections during the neonatal period new bacteria--group b streptococci--have to be taken into account, since in some clinics they already predominate over gramnegative rods. septicemia and meningitis may be caused by group b streptococci. the septicemia which especially threatents prematures starts with apnoeic spells in the very first hours after birth and may be easily misdiagnosed as an idiopathic respiratory distress syndrome. the mortality is very high (about 60%). men ... | 1978 | 357954 |
| an etiologic shift in infantile osteomyelitis: the emergence of the group b streptococcus. | twenty-one infants from six to 52 days of age (mean 23.3 days) with osteomyelitis were studied between 1965 and 1977. the etiologic agents were group b streptococcus (8), staphylococcus aureus (6), gramnegative bacilli (4), streptococcus pneumoniae (1), and unknown (2). patients with group b streptococcal osteomyelitis were characterized by an uncomplicated neonatal course, single bone involvement with a predilection for involvement of the proximal humerus, and lack of inflammatory signs. in con ... | 1978 | 359771 |
| group b streptococcal meningitis associated with a csf fistula. | an elderly man had group b streptococcal meningitis. the infection may have seeded the meninges through a rhinocerebral fistula. despite the frequency of nasopharyngeal colonization with this organism, reports of adult meningitis secondary to group b streptococcus are rare; to our knowledge, no previous cases specifically associated with rhinocerebral fistula have been described. reasons for the discrepancy between the frequency of nasopharyngeal colonization and the rarity of meningitis are sug ... | 1978 | 341863 |
| [colonization of the pregnant woman and the newborn by group b streptococcus: therapeutic and preventive implications]. | in a search for group b streptococci, vagina and urethra of 196 pregnant women entering the delivery room were cultured using a selective medium. sixteen (8.2%) were positive. fifteen (15%) of 101 nonpregnant women cultured similarly during a clinical consultation were positive. esogastric aspiration fluid of 199 neonates from the former group of women was also cultured: 8 (4.0%) were positive. thus, maternal genital colonization was accompanied by neonatal contamination in 7 of 16 cases (43%). ... | 1978 | 353974 |
| epidemiology of group b streptococcus: longitudinal observations during pregnancy. | a longitudinal, three-year study of the epidemiology of group b streptococcus was conducted with repeated (four to 11) observations of 382 patients followed through pregnancy, delivery, and the postpartum period. group b streptococci (2.3% of which were nonhemolytic) were isolated from the birth canal at first visit from 15% of the patients and from 28% with repeated cultures. overall, group b streptococci were isolated at 12% of culture visits. streptococcal carriage was significantly less comm ... | 1978 | 351070 |
| group b streptococcal osteomyelitis in adults. | osteomyelitis due to group b streptococcus occurred in two adult male patients. both patients responded to parenteral penicillin g. a review of the literature verifies that group b streptococcus has been an exceedingly rare cause of osteomyelitis in adults. | 1978 | 362544 |
| maternal abo blood group type b: a risk factor in the developement of neonatal group b streptococcal disease. | in a prospective study of maternal genital colonization with group b streptococci (gbs) at the time of delivery, epidemiological data, including blood type (abo group), were recorded for the 1,062 patients studied. blood type b was found in a statistically significant higher proportion of patients colonized with gbs (28%) compared with the total population (16.4%) (p less than .005, x2 = 8.43). women with blood type b were twice as likely to be colonized as those with types o or a. hypotheses to ... | 1978 | 362365 |
| on the relationship between glycerophosphoglycolipids and lipoteichoic acids in gram-positive bacteria. ii. structures of glycerophosphoglycolipids. | 1. eight glycerophosphoglycolipids were isolated from six gram-positive bacteria. besides sn-glycero-1-phospho-beta-gentiobiosyldiacylglycerol (i) and sn-glycero-1-phospho-alpha-kojibiosyldiacylglycerol (ii), three novel structures have been established: 1,2-di-o-acyl-3-o-[6-(sn-glycero-1-phospho)-alpha-d-glucopyranosyl-(1 leads to 2)-(6-o-acyl-alpha-d-glucopyranosyl)]glycerol (iii), 1,2-di-o-acyl-3-o-[6-(sn-glycero-1-phospho)-beta-d-glucopyranosyl-(1 leads to 6)-alpha-d-galactopyranosyl-(1 lead ... | 1978 | 416848 |
| group b streptococci in the female genital tract and nosocomial colonization of newborns. | in a long-term study, rates for group b streptococcus prevalence in the vagina and/or anus of nonpregnant women and pregnant women in the first trimester and in the second trimester were found as follows: 7.1%, 7.3% and 5.4% respectively. at delivery, positivity rates of 4.8% and 3.8% were found for mothers and newborns, respectively. each pair of strains isolated from mother and newborn was of the same serotype. in 13.6% of newborns nosocomial colonization of the upper respiratory tract occurre ... | 1978 | 367004 |
| bacterial adherence to virus-infected cells: a cell culture model of bacterial superinfection. | mdck cells (a line of stable canine kidney cells) infected with influenza a/nws/33 virus (a neurotropic variant of the wilson smith strain) were tested with 18 selected bacterial species to determine whether mammalian cells become susceptible to bacterial adherence as a result of virus infection. cell monolayers were washed and examined microscopically for adherence. bacteria of only two of 18 species were seen to adhere to the infected cells: a group b streptococcus and streptococcus sanguis. c ... | 1978 | 627737 |
| necrotizing fasciitis and necrotizing cellulitis due to group b streptococcus. | 1977 | 333902 | |
| serological cross-reactivity between group b streptococcus and sporothrix schenckii, ceratocystis species, and graphium species. | serological cross-reactivity of a group b streptococcus (h36b) with sporothrix schenckii and 39 different ceratocystis and graphium species was investigated by double immunodiffusion. rabbit anti-h36b serum reacted with antigens from s. schenckii and from 36 of 39 ceratocystis and graphium species. it is speculated that low-titer agglutinins to s. schenckii in normal sera are due to antibodies raised against various bacteria which share common antigens with s. schenckii. | 1977 | 324913 |
| neonatal sepsis at the johns hopkins hospital, 1969-1975: bacterial isolates and clinical correlates. | the experience with neonatal sepsis at the johns hopkins hospital during 1969-1975 was reviewed. major pathogens included escherichia coli, group b streptococcus, other streptococci, and klebsiella. nineteen percent of coliform isolates were kanamycin-resistant. the frequency of recovery of e. coli was increased in early-onset sepsis, and the frequency of recovery of klebsiella was increased in late-onset sepsis. the mortality rate was 23%. the frequency of recovery of e. coli was increased in f ... | 1977 | 319288 |
| rectal colonization with group b streptococcus: relation to vaginal colonization of pregnant women. | anorectal carriage as a possible primary source of vaginal colonization by group b streptococcus was investigated. the study was performed during two separate periods and included 789 pregnant women and 422 neonates. specimens from multiple sites were obtained for culture from all women and infants and were streaked onto blood agar plates containing 8 mug of gentamicin sulfate/ml and 15 mug of nalidixic acid/ml, which allow selective growth of streptococci. cultures positive for group b streptoc ... | 1977 | 320278 |
| vaginal colonization with group b streptococcus: a study in college women. | vaginal specimens for culture of group b streptococcus and anonymous questionnaires were obtained from 499 college women. group b streptococcus was isolated from 90 (18.0%) of the participants. a selective broth medium was more sensitive for detection of vaginal isolates (85 of 493; 17.2%) than was direct inoculation of blood agar plates (44 of 466; 9.4%). the most prevalent serotypes among the isolates were type iii (37.9%) and type ii (25.3%). logit analysis identified four factors associated ... | 1977 | 321702 |
| new cause of penicillin treatment failure. | a large empyema infected with a penicillin-sensitive haemolytic group b streptococcus failed to respond to high doses of penicillin. after two weeks' treatment the pus aspirated was found not only to contain no penicillin, but also to inactivate penicillin added to it. we believe that the inactivating agent is an enzyme that may destroy various penicillins and cephalosporins but has no effect on other common antibiotics. when treatment was changed to doxycycline the patient made a rapid recovery ... | 1977 | 322815 |
| radiographic findings in early onset neonatal group b streptococcal septicemia. | chest roentgenograms obtained in the first two days of life from 67 infants with respiratory distress were reviewed to determine whether the radiographic features of group b streptococcal septicemia were diagnostic or distinctive. the retrospective review contained 24 infants with proven and 14 with suspected septicemia, as well as 29 patients with other causes of respiratory distress. the films were reviewed in random order by two pediatric radiologists without their prior knowledge of clinical ... | 1977 | 325489 |
| significance of radiographic findings in early-onset group b streptococcal infection. | chest radiographs on 73 neonates with early-onset group b streptococcus (gbs) infection were reviewed. eighty-six percent of the infants were premature (less than 38 weeks); 68% weighed less than or equal to 1,500 g. in infants weighing less than or equal to 1,500 g, the predominant radiographic pattern was hyaline membrane disease (hmd) (80%). there was a significant increase in radiographic hmd in 1,000 to 1,500-g neonates with gbs infection (77%) when compared to a control group of infants wi ... | 1977 | 331225 |
| colonization with group b streptococci in girls under 16 years of age. | cultures from the vagina, pharynx, and anal canal of 100 healthy girls, 2 months through 15 years of age, were examined for the presence of group b streptococci. of the 100 participants, 20% were colonized at one or more of these three sites. pharyngeal colonization was detected in 15% of the girls under 11 years of age and in 5% of those over 11 years of age. colonization at anogenital sites were observed in 19% of participants under 3 years of age, in 25% of those 11 years of age and older, an ... | 1977 | 333366 |
| streptococcus group b typing: comparison of counter-immunoelectrophoresis with the precipitin method. | the method of counter-immunoelectrophoresis (cie) was tested for its applicability to group b streptococcus typing. the results obtained were compared with the typing by the ring precipitin test. identical antigens and identical hyperimmune typing serum batches had been used in both methods. a large majority of 75 freshly isolated strains were typed identically by both methods. five strains with a weak antigenic outfit were untypable by the ring precipitin test but were typed by cie owing to a h ... | 1977 | 333825 |
| complement activation and group b streptococcal infection in the newborn: similarities to endotoxin shock. | serial measurements of ch50, c3, c4, and factor b were performed on three newborn infants with group b streptococcal sepsis. two of the septic infants had a colonized but noninfected identical twin. all three infants with group b streptococcal sepsis had hypotension, prolonged coagulation times, neutropenia, and respiratory failure. during the course of the sepsis, factor b was depressed 30% to 35%, c3 was depressed 40% to 60%, and ch50 was depressed by 100% when compared to their cord blood lev ... | 1977 | 341069 |
| early-onset pneumococcal sepsis in newborn infants. | five infants with pneumococcal sepsis presented with respiratory distress and clinical signs of infection in the first day of life. although there was no apparent epidemiological relationship among the patients, four of the five were seen within a 12-month period. pneumonia, prolonged rupture of fetal membranes, and prematurity were features in these patients. three infants died, two within 12 hours of diagnosis. streptococcus pneumoniae was isolated from the vagina of three of the mothers; in t ... | 1977 | 19725 |
| perinatal immunity to group b beta-hemolytic streptococcus type ia. | sera from 14 of 56 adult women protected mice from intraperitoneal challenge with mouse-virulent group b streptococcus serotype ia, and sera from seven of 25 nonparturient women in this group were bactericidal for greater than 99% of the organisms in the presence of normal polymorphonuclear leukocytes. there were no discrepancies between the in vivo and in vitro assays. protective activity was found in the igg class in seven sera, and in the igm class in one. opsonic activity was partially depen ... | 1977 | 72125 |
| immunological investigation of infants with septicemia or meningitis due to group b streptococcus. | purified polysaccharide from type iii group b streptococcus contains both a type iii-specific determinant and another determinant that is common to strains of serotypes other than type iii. the polysaccharide contains sialic acid, galactose, heptose, glucose, glucosamine, and mannose. serum antibody to this antigen was measured by means of a radioactive antigen-binding assay. sera from 36 (67.9%) of 53 women with healthy newoborns contained antibody, a prevalence significantly different from tha ... | 1977 | 70493 |
| summary of the workshop on perinatal infections due to group b streptococcus. | 1977 | 69669 | |
| multiple polysaccharide antigens of group b streptococcus, type ia: emphasis on a sialic acid type-specific polysaccharide. | group b streptococci, type ia (strain 090/14/4), were subjected to sequential extraction procedures and the various extracts were fractionated by a combination of deae-cellulose chromatography and gel-filtration. three major antigens were isolated: the conventional group-specific and type-specific carbohydrates and an acidic polysaccharide consisting of galactose, glucose, glucosamine, and sialic acid. immunochemical data suggest that the acidic antigen, with the exception of the immunodominant ... | 1977 | 68081 |
| endocarditis with myocardial abscesses and pericarditis in an adult: group b streptococcus as a cause. | group b beta-hemolytic streptococcus, s agalactiae, is an uncommon cause of endocarditis in adults. we present the clinical, laboratory, and postmortem findings of an adult patient with group b streptococcal endocarditis and major arterial emboli. what to our knowledge are previously unreported features are purulent pericarditis and myocardial abscesses. twenty-five cases of endocarditis caused by group b streptococcus that are reported in the literature are reviewed. | 1977 | 337917 |
| early neonatal bacteraemia. comparison of group b streptococcal, other gram-positive and gram-negative infections. | all cases of neonatal bacteraemia associated with clinical illness occurring at hammersmith hospital, over a 9-year period, 1967-1975 inclusive, have been reviewed. the infants studied were those born in the hospital's maternity unit and those admitted from other hospitals from a wide area round london who were ill or of low birthweight. positive blood cultures occurred in 91 infants, 47 of them in the first 48 hours of life. these 47 infants were analysed separately and divided into three group ... | 1977 | 335983 |
| group b streptococcus (s. agalactiae) bacteremia in adults: analysis of 32 cases and review of the literature. | 1977 | 335186 | |
| streptococcus group b: an old bug with new dangers. | infection of the newborn infant with group b hemolytic streptococcus is increasing in importance as other pathogens decline. such infection may appear within the first 48 hours of life and resemble respiratory distress syndrome, or around the tenth day, when signs of meningeal irritation may be present. early onset disease may be due to any of the five serotypes of the group b streptococcus and is fatal in a high percentage of cases. late onset infection usually is due to serotype iii. the epide ... | 1977 | 330610 |
| rapid bioassay for clindamycin alone and in the presence of aminoglycoside antibiotics. | a rapid bioassay for determination of concentrations of clindamycin in serum was developed with use of a strain of lancefield group b streptococcus (streptococcus agalactiae) that is uniformly resistant to aminoglycoside antibiotics, tetracycline, and polymyxin. an agar diffusion assay system was used that included the addition of patient's sera and three standard concentrations of clindamycin to 5-mm wells cut in the seeded agar. pretreatment of serum with penicillinase allowed measurement of c ... | 1977 | 409783 |
| quantitative determination of antibody to capsular polysaccharide in infection with type iii strains of group b streptococcus. | the development of antibody in response to invasive infection with type iii strains of group b streptococcus was studied in sera from 31 infants and 4 adults by means of a quantitative radioactive antigen-binding assay. low concentrations of antibody were consistently found in the acute sera of patients who developed clinical illness. although adults with puerperal sepsis and infants with bone or joint infection uniformly demonstrated significant rises in serum antibody concentration after recov ... | 1977 | 856869 |
| failure of penicillin to eradicate the carrier state of group b streptococcus in infants. | serial cultures were obtained from 12 patients being treated with a form of penicillin for group b streptococcal disease or asymptomatic colonization. these cultures were collected prior to initiation of therapy, during therapy, and at the end of the treatment period. pencillin eradicated gbs from the involved system (blood, csf, bone, and joint). cultures remained positive from at least one of three carrier sites (throat, umbilicus, and rectum) in 70% of patients cultured between days one and e ... | 1976 | 781199 |
| letter: persistent group b streptococcus bacteremia without clinical "sepsis" in infants. | 1976 | 775043 | |
| experimental group b streptococcal infections in mice: hematogenous virulence and mucosal colonization. | a group b streptococcus recovered from a blood specimen from a neonate with sepsis was used to evaluate the use of mice for studies characterizing the hematogenous virulence and the asymptomatic mucosal colonization of the vagina or of the respiratory tract by these bacteria. when injected intravenously, the 50% lethal dose for mice was 10(6); however, as few as 10(2) organisms produced septic deaths. in mice undergoing water diuresis, bacteriuria and pyelonephritis were not produced after direc ... | 1976 | 773831 |
| microcapsule of type iii strains of group b streptococcus: production and morphology. | the yield of purified type iii polysaccharide of group b streptococcus was significantly improved by modification of the growth medium. culture of organisms in standard todd-hewitt broth resulted in acid accumulation during the exponential phase of growth and poor yield of type iii polysaccharide when extracted from cells by washing with neutral buffer solution. by increasing the buffering capacity of the broth medium, acid accumulation was prevented, and the number of viable cells was increased ... | 1976 | 2557 |
| identification of sialic acid in polysaccharide antigens in group b streptococcus. | by means of paper chromatographic techniques with purified, sialic acid-containing, bacterial antigen standards, sialic acid, as well as galactose and glucosamine, have been identified as components of each type-specific antigen of group b streptococcus. rhamnose was not detected in the group b antigen isolated by the classical hcl and heat extraction method. | 1976 | 55386 |
| immunochemical characterization of the "native" type iii polysaccharide of group b streptococcus. | the type iii polysaccharide of -roup b streptococcus has been isolated and purified by a method that employs washing of intact cells at neutral ph. that the polysaccharide prepared by this procedure is the "native" type iii antigen is suggested by its molecular size in excess of 10(6) daltons, its degradation by acid and heat treatment to a fragment with immunologic characteristics of the classical hcl antigen, and its type-specific serologic activity. the type iii polysaccharide in native form ... | 1976 | 55450 |
| pulmonary changes in neonatal sepsis to group b beta-hemolytic streptococcus: relation of hyaline membrane disease. | the radiographic changes of hyaline membrane disease were seen in seven of eight infants with group b beta-hemolytic streptococcal sepsis. hyaline membranes were found throughout the lungs of all six infants who were examined after death. the most striking finding was the presence of group b streptococci within the membranes of five infants. streptococci were so numerous in one instance that they comprised the bulk of the membrane. another infant uas thought to have classical hyaline membrane di ... | 1976 | 57196 |
| recurrence of group b streptococcal infection. | it is clear that the group b streptococcus has become a major pathogen of young infants within the comparatively recent past. further it is clear that, as with other endemic and epidemic pathogens, increasing clinical and laboratory experience brings to light variations not initially evident. in addition, therapy presumably effective in initial cases may not continue to be so. the following papers by coincidence were received over a relatively brief period of time. hence, for emphasis of some of ... | 1976 | 781195 |
| rapid, colorimetric test for the determination of hippurate hydrolysis by group b streptococcus. | a colorimetric test for the determination of hippurate hydrolysis was developed. brain heart infusion broth made with 1% sodium hippurate served as the test medium. hydrolysis was determined by the addition of two chemical developers, m (rhodamine b) and a (uranium acetate). a dark pink color indicated hydrolysis; no color change indicated no hydrolysis. the method was efficacious in either rapid or overnight incubation. one hundred twenty-five strains of group b, 44 strains of group a, 15 strai ... | 1976 | 767358 |
| immunity to the group b streptococci: interaction of serum and macrophages with types ia, ib, and ic. | the opsonization and phagocytosis of group b streptococci of types ia, ib, and ic were studied in vitro by measuring the uptake of radioactivity by coverslip cultures of rabbit alevolar macrophages during incubation with radiolabeled, nonviable bacteria which had been exposed to rabbit serum. the uptake of counts per minute was quantitative, reproducible, and reversibly inhibited by cold, indicating that it was largely a measurement of phagocytic ingestion rather than of attachment of bacteria-i ... | 1976 | 772153 |
| letter: bilateral breast abscess due to group b streptococcus. | 1976 | 775967 | |
| comparison of bacteriological methods for the isolation of group of b streptococcus from vaginal cultures. | three bacteriological techniques for the isolation of group b streptococci in vaginal cultures were compared. a selective broth medium (sbm) containing gentamicin and nalidixic acid was more sensitive for the detection of vaginal isolates (28/76, 36.8%) from 76 women enrolled in a venereal disease clinic than was an identical selective plate medium (spm) (17/76, 25%). similarly, sbm allowed identification of positive cultures from college women (82/459, 17.9%) significantly more often than direc ... | 1976 | 783189 |
| obstetric observations in eleven cases of neonatal sepsis due to the group b beta hemolytic streptococcus. | neonatal sepsis due to group b streptococcus is reported to be increasing, but the reasons are unclear. eleven cases from a single hospital were reviewed for common obstetric factors. frequent observations associated with 8 surviving infants were maternal infection, early evaluation and treatment of the newborn, and 4+ or 5+ growth on maternal cultures. in contrast, mothers of the 3 infants who died had no clinical signs of infection, and cultures were not obtained. all 11 infants had direct mon ... | 1976 | 768844 |
| chemical nature of a substance isolated from a group b streptococcus causing the "camp" reaction. | a purification method for the "camp" factor is described. the purified preparation obtained is a peptide with a molecular weight of about 15 000. amino acid analysis has shown that this peptide contains an appreciable amount of hydroxyproline. | 1975 | 769682 |
| [group b streptococcus--streptococcus agalactiae--in man]. | 1975 | 1096355 | |
| emergence of group b streptococci in obstetric and perinatal infections. | a retrospective study of obstetric and perinatal illness due to group b streptococci during 1972-4 based on bacteriological referrals from aberdeen maternity hospital and special nursery disclosed (1) a wide spectrum of maternal morbidity, particularly associated with amniotomy and a prolonged rupture-delivery interval, and (2) the emergence of the group b streptococcus as a major cause of serious neonatal infection in infants of low birth weight, often in the absence of maternal pyrexia. the gr ... | 1975 | 1097038 |