Starvation response and growth in serum of Fusobacterium nucleatum, Peptostreptococcus anaerobius, Prevotella intermedia, and Pseudoramibacter alactolyticus

Malin Brundin, David Figdor, Goran Sundqvist, Ulf Sjogren

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10 Citations (Scopus)


The microbiota inhabiting the untreated root canal differ markedly from those found in post-treatment disease, yet there is limited information on the microbial characteristics distinguishing the different infections. We hypothesized that starvation survival is a key microbial property in species selection. This study analyzed starvation-survival behavior over 60 days of species representative of the untreated root canal infection: Fusobacterium nucleatum, Peptostreptococcus anaerobius, Prevotella intermedia and Pseudoramibacter alactolyticus. All species did not survive 1 day in water. In 1 serum, the 4 species could not survive beyond 2-3 weeks. They required a high initial cell density and >or=10 serum to survive the observation period. The results highlight a poor starvation-survival capacity of these 4 species compared with species prevalent in post-treatment infection, which are well equipped to endure starvation and survive in low numbers on minimal serum. These findings point to starvation-survival capacity as a selection factor for microbial participation in post-treatment disease.
Original languageEnglish
Pages (from-to)129 - 134
Number of pages6
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Issue number1
Publication statusPublished - 2009

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