Comparative analysis of the oral microbiota between iron-deficiency anaemia (IDA) patients and healthy individuals by high-throughput sequencingOriginal paper
Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease, four years before the first published case study.
Read MoreWhat was studied?
This cross-sectional study compared dental plaque microbiota between 24 iron-deficiency anaemia (IDA) patients and 24 healthy controls at West China Hospital. It tested whether iron deficiency alters oral microbiota in ways relevant to infective endocarditis risk.
How was it studied?
High-throughput sequencing profiled dental plaque samples from both groups, classifying sequences into 12 phyla and 497 OTUs. Genus-level abundances were compared between groups and correlated with serum ferritin concentration.
What did they find?
IDA patients had lower oral microbial diversity than controls. Corynebacterium, Neisseria, Cardiobacterium, Capnocytophaga and Aggregatibacter were significantly higher in healthy controls, while Lactococcus, Enterococcus, Lactobacillus, Pseudomonas and Moraxella were higher in the IDA group. Lactococcus, Enterococcus, Pseudomonas and Moraxella abundances were negatively correlated with serum ferritin.
Why it matters
Streptococci, the main infective endocarditis pathogen, were not increased in IDA, so a direct rise in endocarditis risk remains unclear. The genera enriched in IDA are frequently antibiotic-resistant, suggesting a need for personalized antibiotic prevention strategies before dental procedures.