Tomoko Yaeshima

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Biochemical properties and DNA-DNA reassociation studies of Lactobacillus acidophilus strains isolated from humans and animals indicate that these include six genomospecies. Two new species can be differentiated from the established species of the genus Lactobacillus: L. gallinarum sp. nov. (type strain, ATCC 33199) and L. johnsonii sp. nov. (type strain,(More)
Lactoferrin (LF) was identified as a milk protein in 1960. Large-scale manufacturing of bovine LF (bLF) was established more than 20 years ago. Using this commercially available material, research for bLF applications has advanced from basic studies to clinical studies, and bLF has been applied to commercial food products for the last 25 years. During this(More)
A new potent antibacterial protein, for which we propose the name royalisin, was found in royal jelly of the honeybee Apis mellifera L. and purified to homogeneity for the first time by acid extraction, gel filtration, and reverse-phase high pressure liquid chromatography. The primary structure of royalisin was determined to consist of 51 residues, with(More)
Although probiotic-containing nutrient formulas for infants and toddlers have become very popular, some adverse effects related to translocation of probiotic strains have been reported. We assessed the safety of probiotic bifidobacteria that have been used in clinical investigations and proven to have beneficial effects, by analyzing mucin degradation(More)
AIMS The aim of the study was to evaluate the efficacy of probiotics on gut-derived sepsis caused by Pseudomonas aeruginosa in immunocompromised mice. METHODS AND RESULTS After oral inoculation of P. aeruginosa, mice were treated with cyclophosphamide to induce leucopenia and translocation of the intestinal P. aeruginosa into blood, thereby producing(More)
Bifidobacteria, which are obligate anaerobes, were studied to determine the relationship between their sensitivity to oxygen and oxygen metabolism. Among the four species tested, Bifidobacterium infantis, Bifidobacterium breve, and Bifidobacterium longum differed from Bifidobacterium adolescentis in sensitivity to oxygen. The former three species showed(More)
The aim of the present study was to evaluate the anti-obesity activity of a probiotic bifidobacterial strain in a mouse model with obesity induced by a high-fat diet. The mice were fed a high-fat diet supplemented with Bifidobacterium breve B-3 at 10(8) or 10(9) CFU/d for 8 weeks. B. breve B-3 supplementation dose-dependently suppressed the accumulation of(More)
AIMS Ethidium bromide monoazide (EMA) has been determined to cause delay in DNA amplification from dead bacteria at real-time PCR. However, there is concern that the increasing EMA concentration to suppress amplification from high number of dead bacteria also affects live bacteria. The aim is to disclose a novel application of EMA for food hygienic test. (More)
This study investigated the potential utilization of lacto-N-biose I (LNB) by individual strains of bifidobacteria. LNB is a building block for the human milk oligosaccharides, which have been suggested to be a factor for selective growth of bifidobacteria. A total of 208 strains comprising 10 species and 4 subspecies were analyzed for the presence of the(More)
We investigated whether the oral administration of Bifidobacterium longum BB536 could ameliorate influenza virus (IFV) infection in a mice model. Mice were orally administrated BB536 or saline for 2 weeks and then infected with IFV. Orally administered BB536 significantly alleviated symptoms, reduced the loss of body weight, and inhibited viral(More)