Human microbiome, July 17

Protozoa detection in fecal samples from children, airway microbiome, and Staphylococcus transmission between mother and child.

Oral microbiome

Oral Lihong GuoIntercellular communications in multispecies oral microbial communities – Lihong Guo – Frontiers in Microbiology

“This review will summarize the evidence that oral microbes participate in intercellular communications with co-inhabitants through cell contact-dependent physical interactions, metabolic interdependencies, as well as coordinative signaling systems to establish and maintain balanced microbial communities.”

Respiratory microbiome

Screen Shot 2014-07-17 at 4.58.37 PMAirway Microbiome Dynamics in Exacerbations of Chronic Obstructive Pulmonary Disease – Yvonne J. Huang – Journal of Clinical Microbiology

“In this study, temporal changes in the airway microbiome before, at the onset of, and after an acute exacerbation were examined in 60 sputum samples collected from subjects enrolled in a longitudinal study of bacterial infection in COPD.”

Screen Shot 2014-07-17 at 4.59.26 PMTime between Collection and Storage Significantly Influences Bacterial Sequence Composition in Sputum Samples from Cystic Fibrosis Respiratory Infections – Leah Cuthbertson – Journal of Clinical Microbiology

“Samples were treated with propidium monoazide to distinguish live from dead cells prior to DNA extraction, and 16S rRNA gene pyrosequencing was used to characterize their bacterial compositions.”

Gut microbiome

Screen Shot 2014-07-17 at 4.58.09 PMThe devil lies in the details: How variations in polysaccharide fine-structure impact the physiology and evolution of gut microbes – Eric C. Martens – Journal of Molecular Biology

“Here, we review the recent literature on this topic and posit that numerous, subtle variations in polysaccharides diversify the spectrum of available nutrient niches, each of which may be best filled by a subset of microorganisms that possess the corresponding proteins to recognize and degrade different carbohydrates”

Pregnancy and birth

Protozoa pediatricDetection of intestinal protozoa in paediatric patients with gastrointestinal symptoms by multiplex real-time PCR – L. Maas – Clinical Microbiology and Infection

“The performance of a multiplex real-time PCR for the detection of Blastocystis, Dientamoeba fragilis, Giardia lamblia, Cryptosporidium species and Entamoeba species in faecal samples was evaluated in an observational prospective study.”

Staph transmTransmission of Staphylococcus aureus between mothers and infants in an African setting – F. Schaumburg – Clinical Microbiology and Infection

“We aimed to investigate the transmission of S. aureus between mothers and their newborns during the first year after delivery in an African setting. In a longitudinal cohort study, colonization of Gabonese mother–infant pairs was assessed at delivery and after 1, 9 and 12 months.”

Commentary: Travelling within the fetal gut: simple rules for an arduous journey
Qiling Xu – BMC Microbiology

“A recent paper in BMC Biology addresses this issue with live imaging of gut explants from mouse embryos.”

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