Streptococcus agalactiae (Group B Streptococcus)

Edwards, Morven S.; Baker, Carol J.

doi:10.1016/b978-1-4557-4801-3.00203-4

Cited by 34 publications

(10 citation statements)

References 140 publications

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“…Our baby presented initially with early‐onset GBS disease (bacteraemia and pneumonia) and had a recurrent presentation with late‐onset GBS disease (bacteraemia, parotitis and possible osteomyelitis). Recurrent GBS infections are infrequent, occurring in 1–6% of cases 12 and usually thought to result from persistent mucosal colonisation, although reinfection is difficult to exclude. Possible factors predisposing to recurrent infection include: prematurity, persistent mucosal colonisation, immature immune response and breast milk as a potential source of recurrent infection 12 …”

Section: Discussionmentioning

confidence: 99%

“…Recurrent GBS infections are infrequent, occurring in 1–6% of cases 12 and usually thought to result from persistent mucosal colonisation, although reinfection is difficult to exclude. Possible factors predisposing to recurrent infection include: prematurity, persistent mucosal colonisation, immature immune response and breast milk as a potential source of recurrent infection 12 …”

Section: Discussionmentioning

confidence: 99%

“…Although cases of recurrent neonatal GBS infection related to infected breast milk have been reported, there is no evidence that stopping breastfeeding prevents recurrence, and the usual advice is that breastfeeding should be continued 12 …”

Section: Discussionmentioning

confidence: 99%

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Late‐onset recurrence of neonatal Group B Streptococcus disease presenting with acute parotitis

Abdali

Isaacs

2022

J Paediatrics Child Health

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Late‐onset recurrence of neonatal Group B Streptococcus disease presenting with acute parotitis

Abdali

Isaacs

2022

J Paediatrics Child Health

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“…GBS as a harmless commensal bacterium is part of the human microbiota that is colonized in the genitourinary and gastrointestinal tract of 30% of healthy adults (carriers with no symptoms). However, GBS causes severe invasive infections, particularly in the elderly, infants, and those with compromised immune systems [ 13 ]. S. agalactiae is a major neonatal pathogen [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and anti-trichomunas characteristics of local landraces of Lawsonia inermis L.

Bafghi

Salary

Mirzaei

et al. 2022

BMC Complement Med Ther

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Background Henna (Lawsonia inermis) with anti-bacterial properties has been widely used in traditional medicine especially Persian medicine. Henna oil is suggested for diseases of infectious origin, such as cervical ulcers. Group B Streptococcus agalactiae, Pseudomonas aeruginosa and, Trichomonas vaginalis are involved in the infection of women especially cervicitis. Henna grows in dry and tropical regions. The main important landraces of henna landraces are cultivated in Kerman, Sistan and Baluchestan, Hormozgan, and Bushehr provinces in Iran. Proper use of antimicrobial agents, use of new antimicrobial strategies, and alternative methods, such as herbal methods may help reduce drug resistance in the future. This study’s objective was to investigate the anti-Trichomonas vaginalis activity of three different henna landraces and antimicrobial effects against group B Streptococcus agalactiae and, Pseudomonas aeruginosa. Methods Total phenol content was measured by Folin ciocaltu method. Antibacterial effect of landraces of Henna against P. aeruginosa and S. agalactiae were assayed by well diffusion method and minimal inhibitory concentration assessments were done using the broth micro-dilution technique. Anti-Trichomonas effect of Henna landraces were assayed by Hemocytometery method. Results Total phenol content of Shahdad, Rudbar-e-Jonub, and Qaleh Ganj was 206.51, 201.96, and 254.85 μg/ml, respectively. Shahdad, Rudbar-e-Jonub, and Qaleh Ganj had MIC against GBS at 15, 15 and, 4 μg/ml. The growth inhibition diameter of the most effective henna (Shahdad landrace) at a concentration of 20 μg/ml on P. aeruginosa was 2.46 ± 0.15 cm and in the MIC method at a concentration of 5 μg/ml of Shahdad landrace, P. aeruginosa did not grow. IC50 of shahdad Henna after 24 h, 48 h, and 72 h was 7.54, 4.83 and 20.54 μg/ml, respectively. IC50 of Rudbar-e-Jonub extract was 5.76, 3.79 and 5.77 μg/ml in different days. IC50 of Qaleh Ganj extract was 6.09, 4.08 and 5.74 μg/ml in different days. Conclusions The amount of total phenol in Qaleh Ganj was higher than the other varieties. In the well diffusion method, Qaleh Ganj was more effective against group B Streptococcus (Gram-positive bacterium) than the other two landraces, and Shahdad landrace was more effective against P. aeruginosa (Gram-negative bacterium) than other. In the MIC method, the same result was obtained as in the well diffusion method, but at a lower concentration.

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“…It is noteworthy that the existence of such colonization in the obstetric canal during late pregnancy may cause serious infections in both the newborns and mothers 1 . GBS in the first month of life may occur as fulminant sepsis, meningitis or respiratory distress syndrome in the developed countries 2,3 . The bacteria can colonize almost 10-40% of the digestive system and genital region in women and can result in various problems such as premature delivery, premature rupture of membrane and postpartum fever 4,5 .…”

mentioning

confidence: 99%

Comparison of Culture and PCR Methods for Diagnosis of Group B <i>Streptococcus</i> in Women

et al. 2018

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Group B Streptococcus (GBS), as a risk factor for newborns, is one of the most important causes of meningitis and septicaemia in newborns, intrauterine infections in women and colonization in the vaginal region in late gestation. We evaluate GBS prevalence and infection among pregnant women through culture and PCR methods, and then compare these methods. To this end, vaginal and urine swabs were separately collected from 246 women at the Women's Hospital of Sari, Iran. Next, the samples were enriched in selective culture media Todd-Hewitt broth for 24 h at 37C, recognized using blood agar media, and finally were amplified STREP gene by PCR technique. The indicated that the frequency of GBS in samples collected from urine and vaginal cultures and PCR method was positive. In addition, no significant relationship was found among the positive results of culture, maternal age, gestational age, a history of abortion and infection. With regard to the cultivation method as a standard technique, the sensitivity of PCR test was 100% and specificity was 96%. Moreover, it was found that the colonization rate of GBS in women was significant in Sari. Therefore, PCR is recommended as a reliable and rapid method for detection of GBS.

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Streptococcus agalactiae (Group B Streptococcus)

Cited by 34 publications

References 140 publications

Late‐onset recurrence of neonatal Group B Streptococcus disease presenting with acute parotitis

Late‐onset recurrence of neonatal Group B Streptococcus disease presenting with acute parotitis

Antibacterial and anti-trichomunas characteristics of local landraces of Lawsonia inermis L.

Comparison of Culture and PCR Methods for Diagnosis of Group B <i>Streptococcus</i> in Women

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