Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| alcohol versus natural drying for newborn cord care. | to compare alcohol cleaning and natural drying of newborn umbilical cords. | 1998 | 9836156 |
| intramyometrial abscess complicating pregnancy. a report of two cases. | intramyometrial abscess in pregnancy is a rare event. little information is available on the presentations and potential complications. | 1998 | 9839271 |
| effect of delayed inoculation of selective media in antenatal detection of group b streptococci. | to determine accuracy of group b streptococcal culture swabs immediately inoculated after sampling compared with swabs transported to the laboratory and inoculated subsequently. | 1998 | 9840550 |
| relationship between maternal group b streptococcal colonization and pregnancy outcome. | to examine the association of maternal colonization with group b streptococcus (gbs) with preterm labor and premature rupture of the membranes (prom). | 1998 | 9840551 |
| antibiotic susceptibility profile of group b streptococcus acquired vertically. | to determine the contemporary antibiotic susceptibility profile of vertically acquired group b streptococcal isolates. | 1998 | 9840552 |
| phls group b streptococcus working group. | 1998 | 9866282 | |
| [intrapartum administration of antibiotics in the prevention of neonatal streptococcus b infections]. | this study was performed prospectively. between 1. january 1995 and 31 december 1997, a modification of the screening-based strategy protocol was implemented. antenatal screening cultures for gbs were performed at approximately 30-32 weeks of gestation. the protocol recommends the use of antibiotic prophylaxis to gbs positive women with any of the obstetric risk factors for early-onset of gbs disease. our regiment for prophylaxis for patients in labor was ampicillin 2 g. intravenously then 1 g. ... | 1998 | 9868905 |
| listeriosis during pregnancy. | listeriosis is an uncommon infection that has a unique predilection for pregnant women and may result in pregnancy loss. contaminated food is the usual source of infection, and increased federal surveillance of foodstuffs is the most effective strategy for prevention of disease. although dramatic epidemics have received the most publicity, more cases of perinatal listeriosis are isolated. if listeria chorioamnionitis is diagnosed preterm, in contrast to other types of chorioamnionitis, in utero ... | 1998 | 9870235 |
| management of preterm premature rupture of the membranes. | in many cases, the management of preterm prom will be dictated by the presence of advanced labor, intrauterine infection, placental abruption, or nonreassuring fetal testing. these patients should be delivered expeditiously, with group b streptococcus prophylaxis given where possible, and cesarean delivery reserved for routine obstetric indications. the stable patient with pprom and documented fetal pulmonary maturity is best treated by early induction. alternatively, the patient with pprom remo ... | 1998 | 9917942 |
| surfactant protein-a binds group b streptococcus enhancing phagocytosis and clearance from lungs of surfactant protein-a-deficient mice. | surfactant protein-a (sp-a) gene-targeted mice clear group b streptococcus (gbs) from the lungs at a slower rate than wild-type mice. to determine mechanisms by which sp-a enhances pulmonary clearance of gbs, the role of sp-a in binding and phagocytosis of gbs was assessed in sp-a (-/-) mice infected with gbs in the presence and absence of exogenous sp-a. coadministration of gbs with exogenous sp-a decreased gbs colony counts in lung homogenates of sp-a (-/-) mice. sp-a bound to gbs in a calcium ... | 1999 | 9922219 |
| group b streptococcus infection rate unchanged by gestational diabetes. | group b streptococcal colonization in pregnancy has been associated with adverse perinatal outcomes, including intra-amniotic infection, postpartum endometritis, and neonatal sepsis. we sought to determine whether gestational diabetes increases the risk of maternal and neonatal morbidity from group b streptococcal colonization. | 1999 | 9932572 |
| assessment of office-based care of sexually transmitted diseases and vaginitis and antibiotic decision-making by obstetrician-gynecologists. | survey office-based obstetric-gynecologic practitioners regarding their knowledge of infectious disease care and antibiotic use. | 1998 | 9972486 |
| gm-csf-deficient mice are susceptible to pulmonary group b streptococcal infection. | granulocyte-macrophage colony-stimulating factor (gm-csf) gene-targeted mice (gm-/-) cleared group b streptococcus (gbs) from the lungs more slowly than wild-type mice. expression of gm-csf in the respiratory epithelium of gm-/- mice improved bacterial clearance to levels greater than that in wild-type gm+/+ mice. acute aerosolization of gm-csf to gm+/+ mice significantly enhanced clearance of gbs at 24 hours. gbs infection was associated with increased neutrophilic infiltration in lungs of gm-/ ... | 1999 | 10021465 |
| group b streptococcus. | during the 1990s the focus of group b streptococcus (gbs) disease research has shifted to prevention. increased use of intrapartum antimicrobial prophylaxis in north america and australia has led to substantial declines in perinatal disease. vaccine development (initiated two decades earlier) has yielded results--for example, polysaccharide-protein conjugate vaccines given to women of reproductive age proved to be highly immunogenic and well tolerated. also economic evaluations have assessed the ... | 1999 | 10023965 |
| fatal maternal beta-hemolytic group b streptococcal meningitis: a case report. | meningitis secondary to beta-hemolytic group b streptococcus is rare and represents less than 1% of cases of adult meningitis. we report the first known case of maternal mortality attributed to beta-hemolytic group b streptococcal meningitis. a 23-year-old african-american woman with a benign prenatal course delivered a viable male infant at term. labor was complicated by thick meconium for which a saline amnioinfusion was utilized. on postpartum day 1, the patient complained of right hip pain a ... | 1998 | 10064199 |
| serotypes vi and viii predominate among group b streptococci isolated from pregnant japanese women. | infection by group b streptococcus (gbs) is an important cause of bacterial disease in neonates, pregnant women, and nonpregnant adults. whereas serotypes ia, ib, ii, iii, and v are most commonly associated with colonization and disease in the united states, strains of other serotypes have been isolated from patients in japan. by use of an inhibition elisa, the serotypes of 73 vaginal colonizing gbs strains isolated from healthy pregnant japanese women were investigated. twenty-six (35.6%) were ... | 1999 | 10068604 |
| protection against experimental infection with group b streptococcus by immunization with a bivalent protein vaccine. | group b streptococcus (gbs), a bacterium with polysaccharide capsule, is the major cause of sepsis and meningitis in early infancy. recent work has indicated that immunity to gbs infection can be elicited by the surface proteins rib and alpha, either of which is expressed by most gbs strains causing invasive infections. here we show that a bivalent vaccine, composed of purified rib and alpha mixed with aluminum hydroxide (alum), an adjuvant accepted for human use, elicits an antibody response to ... | 1999 | 10073723 |
| the difference in group b streptococcus prophylaxis protocols. | 1999 | 10076200 | |
| capsular sialic acid limits c5a production on type iii group b streptococci. | the majority of type iii group b streptococcus (gbs) human neonatal infections are caused by a genetically related subgroup called iii-3. we have proposed that a bacterial enzyme, c5a-ase, contributes to the pathogenesis of neonatal infections with gbs by rapidly inactivating c5a, a potent pro-inflammatory molecule, but many iii-3 strains do not express c5a-ase. the amount of c5a produced in serum following incubation with representative type iii strains was quantitated in order to better unders ... | 1999 | 10085029 |
| management of asymptomatic term neonates born to mothers with group b streptococcus. | 1999 | 10085839 | |
| group b streptococcus infection, not birth asphyxia. | this case illustrates 2 main points. firstly, fetal infection can mimic exactly both the immediate and delayed signs of perinatal asphyxia. secondly, the placenta may hold the key to the diagnosis of sepsis which may be made difficult in the neonate by labour ward practices such as the use of intrapartum and immediate newborn antibiotics. we strongly support the recommendation that newborn blood and fetal membrane cultures should always be obtained in babies with a diagnosis of 'intrapartum asph ... | 1999 | 10099763 |
| hepatic subcapsular hematomas in fetuses and neonatal infants. | in fetuses and neonates hepatic subcapsular hematomas are relatively common lesions and may be life-threatening. conditions previously associated with these hematomas include trauma, coagulopathies, hypoxia, sepsis, pneumothorax, maternal diseases, and placental lesions. in this study of 755 perinatal autopsies, hepatic subcapsular hematomas were found in 52 (6.9%) cases, including 31 stillborn fetuses and 21 liveborn infants. the average body weight was 690 g. a comparison group consisted of 52 ... | 1999 | 10191344 |
| bloodstream infections in a neonatal intensive-care unit: 12 years' experience with an antibiotic control program. | to assess the prevalence of gram-positive coccal (gpc), gram-negative bacillary (gnb), and fungal blood-stream infections (bsis) during a 12-year period in which a consistent antibiotic treatment protocol was in place; to evaluate the efficacy of these antibiotic policies in relation to treatment, to the emergence of bacterial or fungal resistance, and to the occurrence of infection outbreaks or epidemics. | 1999 | 10219874 |
| [neonatal pneumonia]. | early neonatal pneumonia is mainly caused by bacteria, group b streptococcus, escherichia coli and listeria being the most frequently involved; herpes simplex is the main viral agent. these agents may also be responsible for late forms, besides chlamydia trachomatis and the pathogen agents of community acquired pneumonia. due to the severity of the bacterial pneumonias, treatment must be started with a large spectrum antibiotherapy, and later on adapted according to the results of bacteriologica ... | 1998 | 10223164 |
| neonatal sepsis caused simultaneously by two serotypes of group b streptococcus. | 1999 | 10223702 | |
| immunoreactivity of human fetal membranes to peptidoglycan polysaccharide (pgps): cytokine response. | group-b streptococcus has been associated with preterm labor and other pregnancy related complications. this study was performed to evaluate the effect of peptidoglycan polysaccharide (pgps) derived from a beta hemolytic streptococcal cell wall on amniochorion cytokine production and to compare pgps effects with lipopolysaccharide (lps), which is the gram negative counterpart of pgps. | 1998 | 10224600 |
| anaphylaxis in labor secondary to prophylaxis against group b streptococcus. a case report. | two strategies have been recommended by the centers for disease control and prevention and approved by the american college of obstetrics and gynecology to help prevent group b streptococcal disease in the newborn. both involve using penicillin in labor. however, the potential for allergic and even anaphylactic reactions to penicillin exists. | 1999 | 10319312 |
| aseptic meningitis in the newborn and young infant. | when a toxic newborn or young infant presents with fever and lethargy or irritability, it is important to consider the diagnosis of meningitis even if the classic localizing signs and symptoms are absent. cerebrospinal fluid should be obtained (unless lumbar puncture is clinically contraindicated) to enable initial therapy to be planned. initial results of cerebrospinal fluid testing may not conclusively differentiate between aseptic and bacterial meningitis, and antimicrobial therapy for all li ... | 1999 | 10348069 |
| preventing early-onset group b streptococcal sepsis: strategy development using decision analysis. | to evaluate recommended strategies for prevention of early-onset group b streptococcal infections (eogbs) with reference to strategies optimized using decision analysis. | 1999 | 10353973 |
| antimicrobial prevention of early-onset group b streptococcal sepsis: estimates of risk reduction based on a critical literature review. | to identify interventions that reduce the attack rate for early-onset group b streptococcal (gbs) sepsis in neonates. | 1999 | 10353975 |
| bacterial infections in infants 60 days and younger: epidemiology, resistance, and implications for treatment. | to establish what might be more optimal initial antibiotic therapy for suspected invasive bacterial infections in infants 60 days or younger who are evaluated in the emergency department (ed). | 1999 | 10357302 |
| laboratory practices for prenatal group b streptococcal screening and reporting--connecticut, georgia, and minnesota, 1997-1998. | group b streptococcus (gbs) is a leading cause of neonatal sepsis in the united states. cdc, in collaboration with the american college of obstetricians and gynecologists and the american academy of pediatrics, recommends that laboratories adopt optimal screening practices to identify gbs and to promptly report test results so that gbs-colonized pregnant women can receive antibiotics during labor. to assess gbs screening practices in clinical laboratories, state health departments surveyed labor ... | 1999 | 10365633 |
| intrapartum antibiotics and early onset neonatal sepsis caused by group b streptococcus and by other organisms in australia. australasian study group for neonatal infections. | early onset group b streptococcal (eogbs) infection, the major neonatal infection in industrialized countries, can be prevented by intrapartum antibiotics, but population studies are lacking. this study aimed to determine the incidence of early onset infections caused by group b streptococcus (gbs) and other organisms in australia and to assess intrapartum antibiotic use. | 1999 | 10391182 |
| peritonitis caused by group b streptococcus in a child receiving continuous cycling peritoneal dialysis. | 1999 | 10391199 | |
| chorioamniotic membranes constitute a competent barrier to group b streptococcus in vitro. | to study the penetration of group b streptococcus (gbs) through human chorioamniotic membranes in vitro. | 1999 | 10391527 |
| [group b streptococcus, primary cause of life-threatening infections in infants. epidemiology and prevention strategy]. | as soon as the early 70's, group b streptococci (gbs) became clearly predominant in neonatal infections. there was a dramatic increase in the incidence of gbs neonatal sepsis and meningitis throughout developed countries and gbs emerged as the leading cause of severe neonatal infections. most of these infections, associated with high mortality and morbidity, could be prevented by intrapartum chemoprophylaxis given to risk mothers. aap, acog and the cdc issued guidelines for their prevention. tod ... | 1999 | 10394247 |
| conformational epitope of the type iii group b streptococcus capsular polysaccharide. | the protective epitope of the type iii group b streptococcal polysaccharide (gbspiii) is length dependent and conformational. to obtain a more accurate characterization of the conformational epitope, elisa inhibition and surface plasmon resonance studies were conducted on two gbspiii-specific mabs using a large panel of oligosaccharide probes. the results of the studies confirmed that 2 repeating units (ru) is the minimum binding unit and that, while increases in chain length from 2 ru to 7 ru c ... | 1999 | 10395675 |
| deregulation of cyclooxygenase and nitric oxide synthase gene expression in the inflammatory cascade triggered by experimental group b streptococcal meningitis in the newborn brain and cerebral microvessels. | group b streptococcus (gbs) is the most common cause of neonatal sepsis and meningitis. despite antibiotics, gbs in the newborn initiates a cascade of molecular and biological events leading to altered cerebral perfusion, blood-brain barrier disruption, cerebral edema, intracranial hypertension, neurological damage, and even death. having previously shown that gbs infection impairs cerebral blood flow autoregulation and increases prostaglandin (pg) levels, we examined the regulation of some cruc ... | 1999 | 10405195 |
| inhibition enzyme-linked immunosorbent assay for serotyping of group b streptococcal isolates. | group b streptococcus (gbs) is one of the most common organisms causing neonatal sepsis as well as serious infections in adults. serotyping the organism is important in studying the epidemiology of the disease as well as deciding a course of treatment. there are several methods available for serotyping. most of them need high-titered sera and are not quantitative. we are reporting a new inhibition enzyme-linked immunosorbent assay (elisa) for serotyping which is sensitive and specific compared t ... | 1999 | 10405402 |
| subcellular fractionation of group b streptococcus. | 1999 | 10407656 | |
| the r28 protein of streptococcus pyogenes is related to several group b streptococcal surface proteins, confers protective immunity and promotes binding to human epithelial cells. | the r28 protein is a surface molecule expressed by some strains of streptococcus pyogenes (group a streptococcus). here, we present evidence that r28 may play an important role in virulence. sequence analysis demonstrated that r28 has an extremely repetitive sequence and can be viewed as a chimera derived from the three surface proteins rib, alpha and beta of the group b streptococcus (gbs). thus, the gene encoding r28 may have originated in gbs. the r28 protein promotes adhesion to human epithe ... | 1999 | 10411737 |
| self-collection of group b streptococcus cultures in pregnant women. | this study assesses the sensitivity of self-collected rectovaginal culture specimens for group b streptococcus by pregnant patients. | 1999 | 10414060 |
| [value of a rapid screening technique for vaginal carriage of group b streptococcus during hig-risk pregnancies]. | vaginal colonization by group b streptococci (gbs) during pregnancy is associated with lige-threatening neonatal infections acquired during passage through the birth canal. factors associated with an increased risk of gbs transmission to the neonate include prematurity, premature spontaneous rupture of the membranes before 37 weeks of gestational age, prolonged (> 12 h) rupture of the membranes at full term, fever in the mother, multiple pregnancy, and a history of gbs infection. a study was con ... | 1999 | 10418026 |
| [early-onset neonatal sepsis and late-appearing diaphragmatic hernia]. | the interesting association between delayed presentation of right-sided diaphragmatic hernia and neonatal group b streptococcal infections occurs rarely and its pathogenesis is still obscure. two preterm newborn infants with early onset of neonatal sepsis (one due to group b streptococcus) followed by recognition of right-sided diaphragmatic hernia on the 9th and 25th day of life are reported. in both cases the course of neonatal sepsis and pneumonia was complicated due to the appearance of righ ... | 1998 | 10436650 |
| synthesis and preclinical evaluation of glycoconjugate vaccines against group b streptococcus types vi and viii. | group b streptococcus (gbs) types vi and viii are prevalent among serotypes isolated from pregnant women in japan. maternal vaccination with a safe and effective gbs vaccine has been proposed as a rational approach to prevent neonatal gbs disease. because antibody specific for the capsular polysaccharide (cps) antigens of gbs is protective, vaccines were developed with purified type vi and viii cps coupled to tetanus toxoid. in rabbits the newly synthesized conjugate vaccines elicited high-titer ... | 1999 | 10438388 |
| dna probe for beta-hemolytic group b streptococcus. diagnostic accuracy in threatened preterm labor. | to determine the diagnostic accuracy of a dna probe for beta-hemolytic group b streptococcus (gbs) in women with threatened preterm labor. | 1999 | 10442319 |
| protective effect of tyrphostin ag-556 on shock induced by endotoxin or gram positive bacteria. | the effects of tyrphostin ag-556 (tyr), a tyrosine kinase inhibitor, were evaluated on shock induced by lipopolysaccharide (lps) or group b streptococcus (gbs) in rats. mortality and mean survival time were monitored. plasma 6-keto prostaglandin f1alpha (6-keto pgf1alpha) was also measured at four hours after lps injection. the effects of tyr on the production of 6-keto pgf1alpha thromboxane b2(txb2) and nitrite (no) from lps or gbs stimulated in vitro peritoneal rat macrophage were also examine ... | 1999 | 10446890 |
| measurement of human antibodies to type iii group b streptococcus. | 1999 | 10447392 | |
| evaluation of the strep b oia test compared to standard culture methods for detection of group b streptococci. | this study evaluated the accuracy of the commercial product strep b oia (optical immunoassay) compared to the standard agar and broth culture methods for detecting vaginal colonization with group b streptococcus (gbs). | 1999 | 10449270 |
| intrapartum antibiotic prophylaxis increases the incidence of gram-negative neonatal sepsis. | to investigate the influence of the increased use of intrapartum chemoprophylaxis on the incidence of vertically transmitted neonatal sepsis. | 1999 | 10449272 |
| role of complement component c1q in the igg-independent opsonophagocytosis of group b streptococcus. | we investigated the role of complement component c1q in the igg-independent opsonophagocytosis of type iii group b streptococcus (gbs) by peripheral blood leukocytes. we report that c1q binds to type iii gbs both in normal human serum deficient in igg specific for type iii capsular polysaccharide and in a low-ionic strength buffer. the dissociation constant kd ranged from 2.0 to 5.5 nm, and the number of binding sites bmax ranged from 630 to 1360 molecules of c1q per bacterium (cfu). an acapsula ... | 1999 | 10453019 |
| change in antibiotic resistance of group b streptococcus: impact on intrapartum management. | intrapartum chemoprophylaxis has resulted in a significant reduction of group b streptococcus neonatal infection. for penicillin-allergic patients, clindamycin or erythromycin is the recommended antibiotic. the purpose of this study was to establish any pattern of antibiotic resistance of group b streptococcal clinical isolates over the past 15 years. | 1999 | 10454674 |
| role of tumor necrosis factor alpha, interleukin-1beta, and interleukin-6 in a mouse model of group b streptococcal arthritis. | intravenous inoculation of cd1 mice with 10(7) cfu of type iv group b streptococcus (gbs iv) results in a high incidence of diffuse septic arthritis. in this study the roles of tumor necrosis factor alpha (tnf-alpha), interleukin-1beta (il-1beta), and il-6 in articular pathology were evaluated. cytokine levels were quantified in the serum and joints by enzyme-linked immunosorbent assay in mice injected with gbs iv and tested or not tested with pentoxifylline (ptf), a methylxanthine that affects ... | 1999 | 10456898 |
| surveillance of neonatal group b streptococcal infection in sunderland. | surveillance of neonatal group b streptococcus infection in sunderland identified 15 confirmed cases (with positive cultures from blood or csf) in three years from 1995 to 1997, equivalent to an incidence of 1.42 per 1000 live births, not much lower than the estimate of 1.8 used in the united states to justify the introduction of preventative policies. confirmed early-onset cases may represent only a fraction of the true number of cases, and a modified risk factor-based policy was introduced in ... | 1999 | 10462900 |
| molecular characterization of type-specific capsular polysaccharide biosynthesis genes of streptococcus agalactiae type ia. | the type-specific capsular polysaccharide (cp) of a group b streptococcus, streptococcus agalactiae type ia, is a high-molecular-weight polymer consisting of the pentasaccharide repeating unit 4)-[alpha-d-neupnac-(2-->3)-beta-d-galp-(1-->4)-beta-d-glcpnac-(1- ->3 )]-beta-d-galp-(1-->4)-beta-d-glcp-(1. here, cloning, sequencing, and transcription of the type ia-specific capsular polysaccharide synthesis (cps) genes and functional analysis of these gene products are described. a 26-kb dna fragment ... | 1999 | 10464185 |
| regulation of cell component production by growth rate in the group b streptococcus. | group b streptococcus (gbs) is the leading cause of bacterial sepsis and meningitis among neonates. while the capsular polysaccharide (cps) is an important virulence factor of gbs, other cell surface components, such as c proteins, may also play a role in gbs disease. cps production by gbs type iii strain m781 was greater when cells were held at a fast (1.4-h mass-doubling time [td]) than at a slow (11-h td) rate of growth. to further investigate growth rate regulation of cps production and to i ... | 1999 | 10464211 |
| group b streptococcal vertebral osteomyelitis with bacteraemia in an adult with no debilitating condition. | a previously healthy 62-year-old immunocompetent woman presented with group b streptococcal vertebral osteomyelitis. group b streptococcus was recovered in 3 consecutive blood cultures. the patient recovered fully after treatment including antibiotic therapy, bed rest and physical rehabilitation. group b streptococcal vertebral osteomyelitis is uncommon and has not previously been reported in patients with no immunosuppressive condition. | 1999 | 10482065 |
| characterization of enterococcus faecalis alkaline phosphatase and use in identifying streptococcus agalactiae secreted proteins. | we have identified and characterized an enterococcus faecalis alkaline phosphatase (ap, encoded by phoz). the predicted gene product shows homology with alkaline phosphatases from a variety of species; it has especially high similarity with two alkaline phosphatases from bacillus subtilis. expression of phoz in escherichia coli, e. faecalis, streptococcus agalactiae (group b streptococcus [gbs]), or streptococcus pyogenes (group a streptococcus [gas]) produces a blue-colony phenotype on plates c ... | 1999 | 10482522 |
| vaginal colonization with group b streptococcus (streptococcus agalactiae) and peritonitis in a woman on capd. | 1999 | 10489238 | |
| neonatal group b streptococcal disease in finland: a ten-year nationwide study. | group b streptococcus (gbs) is the most common cause of invasive infections in newborns. gbs bacteria are typed on the basis of capsular polysaccharides or surface-localized proteins. both polysaccharides and protein antigens have been suggested as potential vaccine candidates. | 1999 | 10493342 |
| fifteen years of experience with bacterial meningitis. | introduction of haemophilus influenzae type b (hib) vaccines has dramatically altered the epidemiology of bacterial meningitis in children. the goal of this study was to describe these changes in a pediatric teaching hospital. | 1999 | 10493344 |
| role of postnatal penicillin prophylaxis in prevention of neonatal group b streptococcus infection. | this prospective study was designed to identify the role of postnatal penicillin prophylaxis in the prevention of neonatal group b streptococcus (gbs) infection. we studied 10 998 infants. of these, 5389 were in the penicillin prophylaxis group (pp) and 5609 infants did not receive penicillin prophylaxis (npp). infants were allocated to treatment by month of birth, alternating 3-mo blocks or 2-mo blocks to the two groups after the first block was randomly assigned. the use of pp reduced the inci ... | 1999 | 10503688 |
| [pregnant women themselves can take specimens for identification of group b streptococci carriers]. | prenatal screening for group b streptococcus colonisation in pregnant women is controversial, though recommended in some countries. we aimed to compare the detection rate when pregnant women performed their own vaginal/anorectal swabs with the standard practice of physician obtained swabs. during six months, 89 pregnant women with high risk for premature labor collected their own vaginal/anorectal swab after instruction from a midwife. afterwards a physician took a similar sample among 80 of the ... | 1999 | 10504845 |
| low prevalence of the immunoglobulin-a-binding beta antigen of the c protein among streptococcus agalactiae isolates causing neonatal sepsis. | streptococcus agalactiae (group b streptococcus, gbs) is the most important pathogen causing neonatal sepsis. the role of bacterial proteins contributing to pathogenicity in gbs infections has not yet been clearly determined, but the c protein complex has been suggested to be involved in both virulence and protective immunity. the aim of this study was to assess the prevalence of gbs strains bearing the gene encoding for the beta antigen of the c protein among clinical isolates from 68 neonates ... | 1999 | 10517191 |
| neonatal group b streptococcal bacteraemia in india: ten years' experience. | group b streptococcus (gbs) is an infrequent cause of neonatal septicaemia in many developing countries. in a perinatal centre in india with 60,119 live births between 1988 and 1997, gbs was isolated from blood cultures of 10 babies. thus the incidence of gbs bacteraemia was 0.17 per 1000 live births. lethargy, respiratory distress and poor perfusion were the presenting features in eight symptomatic babies. two babies had meningitis, three required ventilatory support and one died. there were no ... | 1999 | 10519349 |
| synthesis of a disialylated hexasaccharide of type viii group b streptococcus capsular polysaccharide. | as part of our program to design, develop and prepare protective vaccines against the bacterial pathogens group b streptococcus, we report the synthesis of a disialylated hexasaccharide. this hexasaccharide represents a portion of the serotype-specific capsular polysaccharide of type viii that has the tetrasaccharide repeat unit [beta-l-rhap-(1-->4)-beta-d-glcp-(1-->4)-[alpha-neu5ac-(2--> 3)]-beta-d- galp-(1-->4)]n. a tetrasaccharide corresponding to this repeat unit has been synthesized by us [ ... | 1999 | 10520252 |
| a randomized trial of conjugated group b streptococcal type ia vaccine in a rabbit model of ascending infection. | maternal vaccination may become a central strategy in the prevention of early-onset group b streptococcal sepsis. unlike earlier group b streptococcal polysaccharide vaccines that were poorly immunogenic, newer vaccines conjugated to tetanus toxoid have been developed and have improved immunogenicity. we sought to evaluate a conjugated vaccine using our rabbit model of ascending infection. | 1999 | 10521733 |
| a serotype viii strain among colonizing group b streptococcal isolates in boston, massachusetts. | maternal colonization with group b streptococcus (gbs) is a risk factor for neonatal gbs disease. whereas serotypes ia, ib, ii, iii, and v are prevalent in the united states, types vi and viii predominate in japan. recently, a serotype viii strain was detected among 114 clinical gbs isolates from a boston, mass., hospital. | 1999 | 10523595 |
| semiquantitative bacterial observations with group b streptococcal vulvovaginitis. | group b streptococcal (gbs) vulvovaginitis is a poorly-delineated clinical entity. the purpose of this study is to report semiquantitative data from four cases of gbs vulvovaginitis and to comment on their significance in terms of the in vitro inhibitory capabilities of gbs. | 1999 | 10524667 |
| an escherichia coli-enterococcus faecalis shuttle vector as a tool for the construction of a group b streptococcus heterologous mutant expressing the beta antigen (bac) of the c protein complex. | group b streptococci (gbs) represent a very important group of human pathogens. so far little is known about the mechanisms by which these bacteria can cause disease and the bacterial factors involved. one putative virulence factor is the beta antigen of the c protein complex (bac), which can bind to the fc region of human iga. its binding function might represent an important virulence mechanism. however, the genetic manipulation of this group of bacteria, necessary to prove involvement of bact ... | 1999 | 10556720 |
| incidence of intrapartum maternal risk factors for identifying neonates at risk for early-onset group b streptococcal sepsis: a prospective study. | in mid-1996 and early 1997, the centers for disease control and prevention, the american college of obstetricians and gynecologists, and the american academy of pediatrics all published guidelines outlining 2 potential strategies for the purpose of preventing neonatal sepsis caused by group b streptococcus. one of these approaches involves treating pregnant women intrapartum with antibiotics if any of the following risk factors develop: delivery at <37 weeks' gestation, membrane rupture for >/=1 ... | 1999 | 10561645 |
| the capture rate of at-risk term newborns for early-onset group b streptococcal sepsis determined by a risk factor approach. | currently, the centers for disease control and prevention, the american college of obstetricians and gynecologists, and the american academy of pediatrics recommend that health care providers for pregnant women implement 1 of 2 strategies for the potential prevention of early-onset neonatal group b streptococcal sepsis. both algorithms recommend intrapartum antibiotic chemoprophylaxis for patients delivered of their neonates at <37 weeks' gestation. the basic difference lies in the management of ... | 1999 | 10561653 |
| hypothermia decreases excitatory neurotransmitter release in bacterial meningitis in rabbits. | the excitatory neurotransmitters glutamate (glu) and aspartate (asp) are involved in the pathogenesis of neuronal injury in meningitis. based on past findings that the induction of moderate hypothermia (32-34 degrees c) attenuates the release of glu in ischemic brain injury, this study was designed to detect if the application of moderate hypothermia decreases the release of excitatory amino acids (eaa) from brain tissue of animals with bacterial meningitis. also examined was whether meningitis ... | 1999 | 10564748 |
| [a case of late onset group b streptococcus meningitis with transient oculomotor nerve palsy]. | i report here a case of late onset group b streptococcus (gbs) meningitis with transient oculomotor nerve palsy. the boy was admitted to our hospital at 25 days of age. on the 5th hospital day, he was found to be unable to open the left eye. although light reflex of both the eyes was intact, the left eye was deviated to the left lateral side. we administered intravenously steroid hormone and antibiotics. his eye movements were normalized on the 30th hospital day. oculomotor nerve palsy in this c ... | 1999 | 10565193 |
| group b streptococcal surface proteins as targets for protective antibodies: identification of two novel proteins in strains of serotype v. | strains of group b streptococcus (gbs) express surface proteins that confer protective immunity. in particular, most strains of the four classical capsular serotypes (ia, ib, ii, and iii) express either of the rib and alpha proteins, two members of the same protein family. here, we report a study of surface proteins expressed by strains of serotype v, which has recently emerged as an important serotype among gbs strains causing serious disease. two novel gbs proteins were identified, purified, a ... | 1999 | 10569749 |
| [contribution of direct bacteriologic examinations to the diagnosis of early materno-fetal bacterial infection: the lille experience]. | a prospective study was conducted in 3056 live-born infants delivered at the jeanneade-flandre maternity hospital of the lille teaching hospital between january and august 1997. clinical, laboratory test, and microbiological test findings were compared. a cohort of 1003 infants who remained in the maternity ward but were considered at increased risk of maternofetal infection (mfi) based on history and/or obstetrical criteria and/or neonatal criteria underwent routine collection of specimens incl ... | 1999 | 10573697 |
| upregulated expression of the cdna fragment possibly related to the virulence of acanthamoeba culbertsoni. | identification of the genes responsible for the recovery of virulence in brain-passaged acanthamoeba culbertsoni was attempted via mrna differential display-polymerase chain reaction (mrna dd-pcr) analysis. in order to identify the regulatory changes in transcription of the virulence related genes by the brain passages, mrna dd-pcr was performed which enabled the display of differentially transcribed mrnas after the brain passages. through mrna dd-pcr analysis. 96 brain-passaged amoeba specific ... | 1999 | 10634042 |
| purulent pericarditis due to group b streptococcus and mycotic aneurysm of the ascending aorta: case report. | a 61-year-old female, with a history of uterine and cervical cancer treated with radical hysterectomy and 2 years of postoperative chemotherapy, presented to the emergency department with dyspnea on exertion. computed tomography of the chest revealed a large pericardial effusion and a sacciform aneurysm of the ascending aorta. the patient subsequently underwent emergency pericardiocentesis with drainage of approximately 330 ml of a bloody and turbid effusion. cultures from the effusion yielded g ... | 2000 | 10651213 |
| maternal antibody transfer in baboons and mice vaccinated with a group b streptococcal polysaccharide conjugate. | two animal models were used to study maternal transfer of antibody to a group b streptococcus (gbs) type iii polysaccharide-tetanus toxoid (iii-tt) conjugate. the iii-tt vaccine protected all 27 mouse pups born to vaccinated dams against a gbs challenge. in a separate study of vaccinated mouse dams and pups, maternal sera contained all 4 subclasses of polysaccharide-specific igg, with igg1 accounting for 83% of total igg. specific igg subclass distribution (igg1>>igg2a=igg2b=igg3) in newborn pup ... | 2000 | 10669351 |
| invasive disease due to group b streptococcus in pregnant women and neonates from diverse population groups. | from 1993 through 1996, surveillance for invasive disease due to group b streptococcus (gbs) in neonates aged <7 days and in peripartum pregnant women was performed in a racially and ethnically diverse cohort in 4 cities in the united states. in a birth population of 157,184, 130 neonatal cases (0.8 per 1000) and 54 maternal cases (0.3 per 1000) were identified. significant correlates with neonatal disease were black or hispanic race and a birth weight <2500 g. the attack rate for peripartum mat ... | 2000 | 10671328 |
| a 5-year review of recurrent group b streptococcal disease: lessons from twin infants. | recurrent invasive disease due to group b streptococcus (gbs) in twin infants has not been reported. we report 2 cases of recurrent gbs afflicting both siblings of a set of dichorionic twin infants. the maternal and infant colonizing and invasive strains were identical by serotyping and pulsed-field gel electrophoresis (pfge). despite attempts at eradication with different antibiotic regimens, the infants remained colonized after treatment of the second episode. a 5-year review of recurrent inva ... | 2000 | 10671329 |
| group b streptococcus: to culture or not to culture? | to determine if universal group b streptococcus (gbs) culturing and antibiotic prophylaxis of obstetric patients decreased the incidence of neonatal early-onset gbs sepsis and mortality and maternal chorioamnionitis. | 1999 | 10685253 |
| characterization of the linkage between the type iii capsular polysaccharide and the bacterial cell wall of group b streptococcus. | the capsular polysaccharide of group b streptococcus is a key virulence factor and an important target for protective immune responses. until now, the nature of the attachment between the capsular polysaccharide and the bacterial cell has been poorly defined. we isolated insoluble cell wall fragments from lysates of type iii group b streptococcus and showed that the complexes contained both capsular polysaccharide and group b carbohydrate covalently bound to peptidoglycan. treatment with the end ... | 2000 | 10713053 |
| nonopsonic binding of type iii group b streptococci to human neutrophils induces interleukin-8 release mediated by the p38 mitogen-activated protein kinase pathway. | nonopsonic interaction of host immune cells with pathogens is an important first line of defense. we hypothesized that nonopsonic recognition between type iii group b streptococcus and human neutrophils would occur and that the interaction would be sufficient to trigger neutrophil activation. by using a serum-free system, it was found that heat-killed type iii group b streptococci bound to neutrophils in a rapid, stable, and inoculum-dependent manner that did not result in ingestion. transposon- ... | 2000 | 10722601 |
| survival of group b streptococcus type iii in mononuclear phagocytes: differential regulation of bacterial killing in cord macrophages by human recombinant gamma interferon and granulocyte-macrophage colony-stimulating factor. | phagocytic and killing capacities of resident and cytokine-activated human macrophages against group b streptococcus (gbs) type iii were studied. evidence is presented that monocyte-derived macrophages from cord and adults ingest serum-opsonized gbs but that killing of bacteria was negligible in resident cells. treatment of adult macrophages with recombinant human gamma interferon (rhifn-gamma; 100 u/ml) or recombinant human granulocyte-macrophage colony-stimulating factor (rhgm-csf; 200 u/ml) r ... | 2000 | 10722616 |
| comparison of gen-probe accuprobe group b streptococcus culture identification test with conventional culture for the detection of group b streptococci in broth cultures of vaginal-anorectal specimens from pregnant women. | the performance of the accuprobe group b streptococcus culture identification test (gen-probe incorporated, san diego, ca, usa) for the detection of group b streptococci (gbs) directly from lim broth cultures of vaginal-anorectal swab specimens from pregnant women (two swabs per patient in most cases) was evaluated by comparing results to those of conventional gbs culture. of 411 specimens analyzed, 82 were positive and 312 were negative for gbs by both methods. after initial testing, the percen ... | 2000 | 10729657 |
| group b streptococcus screening in pregnant women: a comparison of three media. | this study compared the relative isolation rate of group b streptococcus (gbs) from 663 low vaginal swabs, collected from antenatal patients, on three media: horse blood agar plus neomycin (75 mg/l) (neo), islam agar (islam) and islam agar plus nalidixic acid (15 mg/l) and colistin sulphate (10 mg/l) (islam plus). one hundred and forty-seven (22%) gbs were isolated. at 24 hours the isolation rate was highest using neo, but within 72 hours there was little difference. the isolation rates for neo, ... | 2000 | 10740806 |
| [procalcitonin and c-reactive protein kinetics in neonates with group b streptococcus infection]. | 2000 | 10760709 | |
| tricuspid valve group b streptococcal endocarditis after an elective termination of pregnancy. | a patient developed fever, chills, and shortness of breath after an elective first trimester dilation and curettage. blood cultures grew group b streptococcus, and a transesophageal echocardiogram revealed a 2 x 2 cm vegetation on the tricuspid valve and global left ventricular hypokinesis. a 6-week course of parenteral antibiotics and vasodilator therapy resulted in resolution of the valvular vegetation as well as of the left ventricular dysfunction. | 2000 | 10763083 |
| self-collection of antepartum anogenital group b streptococcus cultures. | group b streptococcus (gbs) from the maternal perineum is a leading cause of serious neonatal infection. recommendations by the centers for disease control and prevention include cultures from anogenital swabs on all pregnant women between 35 and 37 weeks' gestation. this study examines whether a significant difference in test results exists between gbs cultures from swabs done by physicians and those done by patients, and whether patients prefer to perform the swab themselves, with the potentia ... | 2000 | 10764191 |
| neonatal group b streptococcal infection in south bedfordshire, 1993-1998. | group b streptococcus (gbs) is now the leading cause of neonatal bacterial sepsis in the western world. the incidence of gbs infection in the united states has been determined, and guidelines produced and implemented for the prevention of neonatal infection. neither incidence nor guidelines are currently established in the united kingdom. | 2000 | 10794787 |
| intrapartum antibiotics for group b streptococcal colonisation. | group b streptococcal infection is common in pregnant women without causing harm. however it is also a significant cause of neonatal morbidity and mortality. | 2000 | 10796138 |
| in vitro inhibition of commercial douche products against vaginal microflora. | recently, vaginal douching has been associated with many health risks in women. the aim of this study was to analyze the effect of commercial douche products against various vaginal microorganisms, including lactobacilli. seven commercial douches were tested against eight lactobacillus clinical isolates and three type strains from the american type culture collection. bv-associated bacteria included six strains of five genera: gardnerella, mobiluncus, mycoplasma, peptostreptococcus, and ureaplas ... | 2000 | 10805365 |
| characterization of the active site of group b streptococcal hyaluronan lyase. | hyaluronan lyase is secreted by most strains of the human pathogen, group b streptococcus. site-directed mutagenesis of the enzyme identified three amino acid residues important for enzyme activity, h479, y488, and r542. these three residues are in close proximity in the putative active site of a homology model of group b streptococcal hyaluronan lyase. the homology model was based on the crystal structure of another related glycosaminoglycan lyase, chondroitin ac lyase, which exhibits different ... | 2000 | 10813837 |
| group b streptococcus meningitis in an hiv-positive adult: case report and review. | we report a new case of meningitis due to group b streptococci (s. agalactiae) in an hiv-positive patient. only three other cases have been reported so far, and common features are discussed. | 2000 | 10826913 |
| the necessity of both anorectal and vaginal cultures for group b streptococcus screening during pregnancy. | group b streptococcus (gbs) sepsis affects approximately 2 of every 1000 newborns. in an effort to decrease the incidence of neonatal gbs infection, the centers for disease control and prevention have established guidelines for screening and treatment during pregnancy. one strategy includes obtaining both vaginal and anorectal gbs cultures, then treating patients whose cultures are positive. many of our patients are reluctant to undergo anorectal cultures. we conducted a study to determine wheth ... | 2000 | 10836777 |
| group b streptococcus induces tnf-alpha gene expression and activation of the transcription factors nf-kappa b and activator protein-1 in human cord blood monocytes. | it has been postulated that production of tnf-alpha is central to the pathogenesis of septic shock induced by group b streptococcus (gbs). in vitro studies using human cord blood monocytes have demonstrated that gbs induces tnf-alpha secretion, but little is known about the intracellular signaling pathways of tnf-alpha induction. in this report we show that heat-killed serotype iii gbs induces host cell signal transduction pathways that lead to activation of the transcription factors nf-kappab a ... | 2000 | 10861080 |
| prevention of perinatal group b streptococcal infection: current controversies. | group b streptococcus (gbs) is the most frequent cause of neonatal sepsis in the united states. the centers for disease control and prevention (cdc) issued guidelines for its prevention in 1996. this article details areas of controversy with those guidelines and offers recommendations for resolution. we recommend that a prevention policy be adopted by all hospitals. if a screening-based policy is chosen, compliance is essential. penicillin is the antibiotic of choice for gbs prevention. increasi ... | 2000 | 10862856 |
| neonatal group b streptococcal disease associated with infected breast milk. | premature triplets each developed late onset group b streptococcal disease over a period of nine weeks. the source of the organism appeared to be expressed maternal breast milk, in the absence of clinical mastitis. asymptomatic excretion of group b streptococcus in breast milk may be an under-recognised cause of neonatal infection. | 2000 | 10873172 |
| investigation of the translation-initiation factor if2 gene, infb, as a tool to study the population structure of streptococcus agalactiae. | the sequence of infb, encoding the prokaryotic translation-initiation factor 2 (if2), was determined in eight strains of streptococcus agalactiae (group b streptococcus) and an alignment revealed limited intraspecies diversity within s. agalactiae. the amino acid sequence of if2 from s. agalactiae and from related species were aligned and revealed an interspecies conserved central and c-terminal part, and an n-terminal part that is highly variable in length and amino acid sequence. the diversity ... | 2000 | 10878130 |