journal
MENU ▼
Read by QxMD icon Read
search

Bioscience of Microbiota, Food and Health

journal
https://www.readbyqxmd.com/read/29038772/revealing-the-genomic-differences-between-two-subgroups-in-lactobacillus-gasseri
#1
Ipputa Tada, Yasuhiro Tanizawa, Akihito Endo, Masanori Tohno, Masanori Arita
Being an autochthonous species in humans, Lactobacillus gasseri is widely used as a probiotic for fermented products. We thoroughly compared the gene contents of 75 L. gasseri genomes and identified two intraspecific groups by the average nucleotide identity (ANI) threshold of 94%. Group I, with 48 strains, possessed 53 group-specific genes including the gassericin T cluster (9 genes) and N-acyl homoserine lactone lactonase. Group II, with 27 strains, including the type strain ATCC 33323, possessed group-specific genes with plasmid- or phage-related annotations...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/29038771/detection-of-antibiotic-resistance-genes-in-the-feces-of-young-adult-japanese
#2
Yuji Ohashi, Tomohiko Fujisawa
Antibiotic resistance genes in the feces of healthy young adult Japanese were analyzed with polymerase chain reaction using specific primers. Antibiotic resistance genes against macrolides (ermB, ermF, ermX, and mefA/E), tetracyclines (tetW, tetQ, tetO, and tetX), β-lactam antibiotics (blaTEM ), and streptomycin (aadE) were detected in more than 50% of subjects. These antibiotic resistance genes are likely widespread in the large intestinal bacteria of young adult Japanese.
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/29038770/lactobacillus-apinorum-belongs-to-the-fructophilic-lactic-acid-bacteria
#3
Shintaro Maeno, Leon Dicks, Junichi Nakagawa, Akihito Endo
Potential fructophilic characteristics of Lactobacillus apinorum, originally isolated from the guts of honeybees (Apis mellifera), were studied in the present study. The species showed typical fructophilic growth characteristics, i.e., active growth on d-fructose, poor growth on d-glucose, and accelerated growth on d-glucose in the presence of electron acceptors. Biochemical characteristics strongly supported classification of the species into fructophilic lactic acid bacteria (FLAB). Furthermore, genetic analyses suggested that the species underwent extensive gene reduction, similar to that recorded for Lactobacillus kunkeei and other FLAB...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/29038769/polysaccharide-from-black-currant-ribes-nigrum-l-stimulates-dendritic-cells-through-tlr4-signaling
#4
Hiroshi Ashigai, Yuta Komano, Guanying Wang, Yasuji Kawachi, Kazuko Sunaga, Reiko Yamamoto, Ryoji Takata, Mika Miyake, Takaaki Yanai
Black currant (Ribes nigrum) has various beneficial properties for human health. In particular, polysaccharide from black currant was found to be an immunostimulating food ingredient and was reported to have antitumor activity in a mouse model. We named it cassis polysaccharide (CAPS). In a previous study, CAPS administration caused tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) production in vitro and in vivo, but the immunological mechanism of CAPS was not demonstrated. In this study, we revealed the CAPS immunostimulating mechanism in vitro...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/29038768/gut-microbial-metabolite-short-chain-fatty-acids-and-obesity
#5
REVIEW
Xuan Li, Yuuki Shimizu, Ikuo Kimura
Over the past decade, the gut microbiota has emerged as an essential mediator in the pathophysiology of obesity and related metabolic disorders. In this context, the reciprocal interactions of the gut microbiota structure and their metabolite profiles with host metabolism predisposing to a range of pathological conditions (e.g., insulin resistance) related to energy homeostasis have been increasingly discussed in various animal models and human cohorts. Remarkably, as the role of gut microbial metabolites as critical signaling molecules that function through the complementary host receptors has come to be appreciated, tremendous attention has been focused on the proposed diet-gut microbiota-host homeostasis axis, entailing extensive cross-disciplinary efforts in medical, pharmaceutical, and agricultural sciences...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28785529/enterotoxigenic-escherichia-coli-and-probiotics-in-swine-what-the-bleep-do-we-know
#6
REVIEW
Jean Daniel Dubreuil
The concept of certain microorganisms conferring direct benefits to the host relates to the term "probiotic". Probiotics are microorganisms, bacteria, or yeast that when administered orally in sufficient quantity can counteract the effect of pathogenic microorganisms. The gastrointestinal (GI) tract is the site where probiotics are believed to play the most important role. The proposed effects of probiotics include antagonism of pathogens, interference with adherence, competition for nutrients, enterotoxin inactivation, modulation of the immune response, and strengthening of the intestinal barrier...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748134/genomic-characterization-reconfirms-the-taxonomic-status-of-lactobacillus-parakefiri
#7
Yasuhiro Tanizawa, Hisami Kobayashi, Eli Kaminuma, Mitsuo Sakamoto, Moriya Ohkuma, Yasukazu Nakamura, Masanori Arita, Masanori Tohno
Whole-genome sequencing was performed for Lactobacillus parakefiri JCM 8573(T) to confirm its hitherto controversial taxonomic position. Here, we report its first reliable reference genome. Genome-wide metrics, such as average nucleotide identity and digital DNA-DNA hybridization, and phylogenomic analysis based on multiple genes supported its taxonomic status as a distinct species in the genus Lactobacillus. The availability of a reliable genome sequence will aid future investigations on the industrial applications of L...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748133/anti-stress-effect-of-the-lactobacillus-pentosus-strain-s-pt84-in-mice
#8
Yuji Nonaka, Takayuki Izumo, Toshihiro Maekawa, Hiroshi Shibata
We investigated if the orally administered Lactobacillus pentosus strain S-PT84 (S-PT84) might show anti-stress activity and ameliorate stress-induced immune suppression in mice. Stress of mice induced an increase in serum corticosterone and a decrease in splenic natural killer activity and in the number of splenocytes versus control mice. However, these changes were not observed in stressed mice that had been administered S-PT84. Furthermore, interleukin (IL)-12 and IL-10 production, which was downregulated in lipopolysaccharide-activated macrophages from stressed mice, was maintained at control levels in the macrophages of stressed mice that had been fed S-PT84...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748132/effects-of-intake-of-lactobacillus-casei-subsp-casei-327-on-skin-conditions-a-randomized-double-blind-placebo-controlled-parallel-group-study-in-women
#9
Yuhi Saito, Toshihiro Mihara, Kentaro Maruyama, Jiro Saito, Masumi Ikeda, Akihito Tomonaga, Takehisa Kumagai
Lactic acid bacteria are gut flora that play key roles in intestinal homeostasis, which may affect a variety of physiological functions. Our preliminary double-blind, placebo-controlled, parallel-group trials have suggested that intake of heat-killed Lactobacillus casei subsp. casei 327 (designated L. K-1) is effective for improving skin conditions. The aim of this study was to confirm the effect of L. K-1 intake in a randomized, double-blind, placebo-controlled, parallel-group study in healthy female volunteers...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748131/an-in-vitro-investigation-of-immunomodulatory-properties-of-lactobacillus-plantarum-and-l-delbrueckii-cells-and-their-extracellular-polysaccharides
#10
Mana Kishimoto, Ryohei Nomoto, Masashi Mizuno, Ro Osawa
Many probiotic lactobacilli and their extracellular polysaccharides (EPS) have beneficial immunological properties. However, it is unclear how they elicit the host immune response. We thus investigated the immunological properties of UV-killed Lactobacillus delbrueckii TU-1 and L. plantarum KM-9 cells as well as their extracellular polysaccharides (EPSs). High-performance liquid chromatography and ion exchange chromatography analyses showed that their EPSs differ in sugar composition and sugar fractionation...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748130/isolation-and-identification-of-bifidobacterium-species-from-feces-of-captive-chimpanzees
#11
Ryohei Nomoto, Shintaro Takano, Kosei Tanaka, Yuji Tsujikawa, Hiroshi Kusunoki, Ro Osawa
Recently, gut-dwelling bifidobacteria from chimpanzees, which are phylogenetically close to humans and have feeding habits similar to humans, have been frequently investigated. Given this, we speculated that like humans, chimpanzees would have a unique diversity of bifidobacteria. We herein describe a taxonomically novel member of bifidobacteria isolated from fecal samples of captive chimpanzees. Bifidobacteria were detected in all fecal samples by quantitative polymerase chain reaction. A Bifidobacterium pseudolongum-like species, which could not be detected using B...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28748129/can-vitamin-k-synthesis-altered-by-dysbiosis-of-microbiota-be-blamed-in-the-etiopathogenesis-of-venous-thrombosis
#12
Suna Aydin
No abstract text is available yet for this article.
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28439489/detection-and-analysis-of-lactobacillus-paracasei-penicillin-binding-proteins-revealed-the-presence-of-cholate-sensitive-penicillin-binding-protein-3-and-an-elongated-cell-shape-in-a-cholate-sensitive-strain
#13
Masahiro Hattori, Glaezel Angelique Torres, Naoto Tanaka, Sanae Okada, Akihito Endo, Junichi Nakagawa
Penicillin-binding proteins (PBPs) are responsible for peptidoglycan synthesis. By using biotinylated ampicillin, we detected PBPs of Lactobacillus paracasei strains. Ten PBPs were identified, 7 of which had apparent molecular sizes similar to those of Escherichia coli. In the presence of cholate, strain NRIC 0625 showed an elongated shape, and its putative PBP3 showed cholate-sensitive penicillin-binding activity. Furthermore, this strain was highly sensitive to cefalexin, which is known to inhibit cell division by inactivating PBP3...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28439488/randomized-double-blind-placebo-controlled-parallel-group-study-of-the-effect-of-lactobacillus-paracasei-k71-intake-on-salivary-release-of-secretory-immunoglobulin-a
#14
Yuhi Saito, Mikio Fujii, Toshiyuki Watanabe, Kentaro Maruyama, Yasuyuki Kowatari, Hiromaru Ogata, Takehisa Kumagai
Lactobacillus paracasei K71 was shown to be effective in alleviating the severity of atopic dermatitis in a randomized controlled trial, and a preliminary open-label trial suggested that strain K71 intake enhanced secretory immunoglobulin A (sIgA) release in the saliva. This study investigated the effect of K71 on sIgA release in a randomized, double-blind, placebo-controlled, parallel-group trial. The trial included 62 Japanese subjects aged 20-64 years with relatively low rates of salivary sIgA release. Subjects (n=31 in each group) were randomly given a tablet containing 100 mg (approximately 2 × 10(11) bacteria) of K71 or a placebo tablet daily for 12 weeks...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28439487/modified-rice-bran-hemicellulose-inhibits-vascular-endothelial-growth-factor-induced-angiogenesis-in-vitro-via-vegfr2-and-its-downstream-signaling-pathways
#15
Xia Zhu, Aya Okubo, Naoki Igari, Kentaro Ninomiya, Yukari Egashira
Angiogenesis is implicated in diverse pathological conditions such as cancer, rheumatoid arthritis, psoriasis, atherosclerosis, and retinal neovascularization. In the present study, we investigated the effects of modified rice bran hemicellulose (MRBH), a water-soluble hemicellulose preparation from rice bran treated with shiitake enzymes, on vascular endothelial growth factor (VEGF)-induced angiogenesis in vitro and its mechanism. We found that MRBH significantly inhibited VEGF-induced tube formation in human umbilical vein endothelial cells (HUVECs) co-cultured with human dermal fibroblasts...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28243550/specific-vaginal-lactobacilli-suppress-the-inflammation-induced-by-lipopolysaccharide-stimulation-through-downregulation-of-toll-like-receptor-4-expression-in-human-embryonic-intestinal-epithelial-cells
#16
Keisuke Tobita, Itsuki Watanabe, Masanori Saito
Vaginal lactobacilli (VLB) spread from the mother to the infant during vaginal delivery. However, the effects of VLB on infant intestinal function remain unclear. We investigated the probiotic function and immune effects of VLB on the human embryonic intestinal epithelial cell line INT-407. VLB survived artificial gastric juice and adhered to INT-407 cells. Exposure of INT-407 cells to VLB attenuated both the lipopolysaccharide (LPS)-induced stimulation of interleukin-8 and tumor necrosis factor alpha production and the LPS-stimulated upregulation of TLR4 expression...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28243549/the-effect-of-soymilk-intake-on-the-fecal-microbiota-particularly-bifidobacterium-species-and-intestinal-environment-of-healthy-adults-a-pilot-study
#17
Tomohiko Fujisawa, Yuji Ohashi, Ryoichi Shin, Asako Narai-Kanayama, Takenori Nakagaki
The influence of soymilk on the fecal microbiota, particularly Bifidobacterium species, and metabolic activities were investigated in eight healthy adult humans. During the soymilk intake period, the number of bifidobacteria in feces was significantly higher (p<0.05) on day 14 of the soymilk intake period than before the intake period, whereas that of Enterobacteriaceae was significantly lower (p<0.05) on days 7 and 14 of the soymilk intake period than before the intake period. In an investigation of Bifidobacterium at the species or group level, the numbers of all species and groups studied slightly increased during the soymilk intake period...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28243548/transition-of-the-intestinal-microbiota-of-dogs-with-age
#18
Hiroaki Masuoka, Kouya Shimada, Tomoyo Kiyosue-Yasuda, Masaharu Kiyosue, Yukie Oishi, Seiji Kimura, Akio Yamada, Kazuhiro Hirayama
Although it is established that the composition of the human intestinal microbiota changes with age, transition of the intestinal microbiota of animals with age has not been well studied. In the present study, we collected fresh fecal samples from dogs of 5 different age groups (pre-weanling, weanling, young, aged, senile) and analyzed the compositions of their intestinal microbiota with a culture-based method. The results suggested that the composition of the canine intestinal microbiota also changes with age...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28243547/analysis-of-gene-expression-profiles-of-lactobacillus-paracasei-induced-by-direct-contact-with-saccharomyces-cerevisiae-through-recognition-of-yeast-mannan
#19
Shino Yamasaki-Yashiki, Hiroshi Sawada, Masahiro Kino-Oka, Yoshio Katakura
Co-culture of lactic acid bacteria (LAB) and yeast induces specific responses that are not observed in pure culture. Gene expression profiles of Lactobacillus paracasei ATCC 334 co-cultured with Saccharomyces cerevisiae IFO 0216 were analyzed by DNA microarray, and the responses induced by direct contact with the yeast cells were investigated. Coating the LAB cells with recombinant DnaK, which acts as an adhesive protein between LAB and yeast cells, enhanced the ratio of adhesion of the LAB cells to the yeast cells...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28243546/l-carnitine-improves-gastrointestinal-disorders-and-altered-the-intestinal-microbiota-in-hemodialysis-patients
#20
Junichiro Irie, Yoshihiko Kanno, Rieko Kikuchi, Tadashi Yoshida, Seizo Murai, Miwako Watanabe, Hiroshi Itoh, Matsuhiko Hayashi
Patients receiving hemodialysis also manifest gastrointestinal symptoms, such as constipation, caused by restriction of water intake and the loss of body water balance. Because dietary carnitine deficiency is considered to cause smooth muscle dysmotility of the gastrointestinal tract similarly to that in skeletal muscles, carnitine deficiency in hemodialysis patients may be one cause of gastrointestinal discomfort and dysfunctions. We performed a multicenter nonrandomized single-arm prospective clinical trial...
2017: Bioscience of Microbiota, Food and Health
journal
journal
48144
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"