Streptococcus pyogenes

Reglinski, Mark; Sriskandan, Shiranee

doi:10.1016/b978-0-12-397169-2.00038-x

Cited by 11 publications

(8 citation statements)

References 320 publications

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“…RHD is estimated to affect 40 million people globally (95% CI 37.9 million to 40.8 million)2 with an estimated 319 000 deaths each year (95% CI 297 000 to 337 300) 3. Notably, the highest reported incidence (374–508 per 100 000 children per year)4 5 and mortality rates (23.8 per 100 000 children per year) are among Aboriginal and Torres Strait Islander peoples in Australia 5 6…”

Section: Introductionmentioning

confidence: 99%

Missing Piece Study protocol: prospective surveillance to determine the epidemiology of group A streptococcal pharyngitis and impetigo in remote Western Australia

et al. 2022

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IntroductionGroup A β-haemolytic Streptococcus (GAS), a Gram-positive bacterium, causes skin, mucosal and systemic infections. Repeated GAS infections can lead to autoimmune diseases acute rheumatic fever (ARF) and rheumatic heart disease (RHD). Aboriginal and Torres Strait Islander peoples in Australia have the highest rates of ARF and RHD in the world. Despite this, the contemporaneous prevalence and incidence of GAS pharyngitis and impetigo in remote Australia remains unknown. To address this, we have designed a prospective surveillance study of GAS pharyngitis and impetigo to collect coincident contemporary evidence to inform and enhance primary prevention strategies for ARF.Methods and analysisThe Missing Piece Study aims to document the epidemiology of GAS pharyngitis and impetigo through collection of clinical, serological, microbiological and bacterial genomic data among remote-living Australian children. The study comprises two components: (1) screening of all children at school for GAS pharyngitis and impetigo up to three times a year and (2) weekly active surveillance visits to detect new cases of pharyngitis and impetigo. Environmental swabbing in remote schools will be included, to inform environmental health interventions. In addition, the application of new diagnostic technologies, microbiome analysis and bacterial genomic evaluations will enhance primary prevention strategies, having direct bearing on clinical care, vaccine development and surveillance for vaccine clinical trials.Ethics and disseminationEthical approval has been obtained from the Western Australian Aboriginal Health Ethics Committee (Ref: 892) and Human Research Ethics Committee of the University of Western Australia (Ref: RA/4/20/5101). Study findings will be shared with community members, teachers and children at participating schools, together with academic and medical services. Sharing findings in an appropriate manner is important and will be done in a suitable way which includes plain language summaries and presentations. Finally, findings and updates will also be disseminated to collaborators, researchers and health planners through peer-reviewed journal publications.

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Section: Introductionmentioning

confidence: 99%

Missing Piece Study protocol: prospective surveillance to determine the epidemiology of group A streptococcal pharyngitis and impetigo in remote Western Australia

et al. 2022

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“…It is thought that beneficial bacteria, such as Bifidobacterium and Lactobacillus , are less abundant in infants receiving frozen breast milk, which may be related to the freezing of breast milk. Streptococcus (Reglinski & Sriskandan, 2015), mostly found as the skin flora and the majority of which is considered to be a human pathogen and disease agent, showed the highest abundance in the 10th-day stools of the frozen breast milk group. Lactobacillus , which is found in healthy intestinal flora, can adhere to the intestinal epithelial layer.…”

Section: Discussionmentioning

confidence: 99%

Effect of Feeding Fresh or Frozen Breast Milk on the Gut Microbiota of Premature Infants: A Prospective Observational Study

Merter,

Altay

2023

Biological Research For Nursing

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Background Breast milk is essential for premature infants. It contains a variety of functional and protective nutrients that help to create a suitable microenvironment for intestinal development and maturation. This prospective and observational study was planned to examine the effects of feeding premature infants with fresh or frozen breastmilk on their gut microbiota. Materials and Methods The study was carried out with a total of 40 infants, with a gestational age of 28–326 weeks, fed fresh ( n = 20) or frozen ( n = 20) breastmilk. Stool samples were stored at −80°C until analysis. Infants were included in groups based on the feed type, which accounted for more than 70% of their 10-day feeding. The Mann-Whitney U, Chi-square, and t-tests were used to evaluate the demographic data. Stool samples were analyzed by sequencing the V3–-V4 region of the 16S rRNA gene from the extracted DNA for microbiota analysis. Results Streptococcus and Enterobacteriales, the majority of which are considered human pathogens, in infants receiving frozen breastmilk ( Streptococcus 69%, Enterobacteriales 79%) was higher than that in infants receiving fresh breastmilk ( Streptococcus 16%, Enterobacteriales 49%). Further, the Lactobacillus and Bifidobacterium species were more abundant in infants who received fresh breastmilk ( Lactobacillus 17%, Bifidobacterium 12%) than in infants who received frozen breastmilk ( Lactobacillus 3%, Bifidobacterium 1%). Conclusion Thus, compared to frozen breast milk, fresh breastmilk has an effect on the diversity of preterm infants’ gut microbiota.

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“…110 Besides that, Streptococcus pyogenes is a pathogens that causes many infectious diseases in humans, such as scarlet fever, rheumatic fever, pharyngitis, tonsillitis, cellulitis, erysipelas and necrotizing fasciitis. 111 Salivaricin B from S. salivarius K12 was found to exert inhibition activities against S. pyogenes with MIC of 2.16 mM. The growth of S. pyogenes was proved to be inhibited by 50% by using 1.0 mM of salivaricin B.…”

Section: Salivaricinmentioning

confidence: 95%

Application of bacteriocins in food preservation and infectious disease treatment for humans and livestock: a review

Zarin

Lee

et al. 2020

RSC Adv.

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Streptococcus pyogenes

Cited by 11 publications

References 320 publications

Missing Piece Study protocol: prospective surveillance to determine the epidemiology of group A streptococcal pharyngitis and impetigo in remote Western Australia

Missing Piece Study protocol: prospective surveillance to determine the epidemiology of group A streptococcal pharyngitis and impetigo in remote Western Australia

Effect of Feeding Fresh or Frozen Breast Milk on the Gut Microbiota of Premature Infants: A Prospective Observational Study

Application of bacteriocins in food preservation and infectious disease treatment for humans and livestock: a review

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