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Lactobacillus gasseri

Shintaro Maeno, Yasuhiro Tanizawa, Yu Kanesaki, Eri Kubota, Himanshu Kumar, Leon Dicks, Seppo Salminen, Junichi Nakagawa, Masanori Arita, Akihito Endo
Lactobacillus kunkeei is classified as a sole obligate fructophilic lactic acid bacterium that is found in fructose-rich niches, including the guts of honeybees. The species is differentiated from other lactobacilli based on its poor growth with glucose, enhanced growth in the presence of oxygen and other electron acceptors, and production of high concentrations of acetate from the metabolism of glucose. These characteristics are similar to phylogenetically distant Fructobacillus spp. In the present study, the genomic structure of L...
October 13, 2016: Systematic and Applied Microbiology
Kentaro Nobutani, Daisuke Sawada, Shigeru Fujiwara, Yuki Kuwano, Kensei Nishida, Jiro Nakayama, Hiromu Kutsumi, Takeshi Azuma, Kazuhito Rokutan
AIMS: To clarify the effects of Lactobacillus gasseri CP2305 (CP2305) on quality of life and clinical symptoms and its functional mechanisms in patients with irritable bowel syndrome (IBS). METHODS AND RESULTS: After the patients were administered CP2305 daily for 4 weeks, the IBS-severity index score was significantly improved compared with that of the placebo group, and this improvement was accompanied by a reduction of health-related worry and changes in intestinal microbiota...
October 20, 2016: Journal of Applied Microbiology
Jeong Hyun Kim, Seung Min Yoo, Yong Hak Sohn, Chan Hee Jin, Yun Suk Yang, In Taek Hwang, Kwan Young Oh
OBJECTIVES: To investigate the predominant Lactobacillus species types of vaginal microbiota in pregnant Korean women by quantifying five Lactobacillus species and two anaerobes. METHODS: One hundred sixty-eight pregnant Korean women under antenatal care at Eulji University Hospital and local clinics were enrolled in the prospective cohort study during pregnancy (10-14 wks). Vaginal samples were collected with Eswab for qPCR and stored in a -80ºC freezer. Quantitative polymerase chain reaction was performed for five Lactobacillus species, and two anaerobes...
October 19, 2016: Journal of Maternal-fetal & Neonatal Medicine
Hirohiko Nakae, Ayumi Tsuda, Takashi Matsuoka, Tetsuya Mine, Yasuhiro Koga
OBJECTIVE: To investigate the structure of the gastric microbiota in functional dyspepsia (FD) and its role in the pathophysiology. DESIGN: We compared the basic physiological properties of the gastric fluid (GF) and the structure of the microbiota in the GF of 44 healthy control (HC) participants and 44 patients with FD. We then treated the patients with FD with a yogurt containing a probiotic strain of Lactobacillus gasseri OLL2716 (LG21 yogurt) and investigated the effects on the bacteriological parameters and symptoms to examine the relationship between them...
2016: BMJ Open Gastroenterology
Eleftheria Chaini, Nikolaos D Chainis, Anastasios Ioannidis, Maria Magana, Chryssoula Nikolaou, Joseph Papaparaskevas, Melina-Vassiliki Liakata, Panagiotis Katopodis, Leonidas Papastavrou, George P Tegos, Stylianos Chatzipanagiotou
Lactobacilli are human commensals found in the gastrointestinal and genitourinary tract. Although generally conceived as non-pathogenic microorganisms, the existence of several reports implicating them in certain severe pathological entities renders this species as opportunistic pathogens. The case of a 58-year-old woman with mixed Lactobacillus infection is described. The patient was admitted in an outpatient clinic with community acquired pneumonia, and on the third day of hospitalization she presented rapid pneumonia deterioration...
2016: Frontiers in Medicine
Gonzalo N Bidart, Jesús Rodríguez-Díaz, Martina Palomino-Schätzlein, Vicente Monedero, María J Yebra
Lacto-N-biose (LNB) and galacto-N-biose (GNB) are major building blocks of free oligosaccharides and glycan moieties of glyco-complexes present in human milk and gastrointestinal mucosa. We have previously characterized the phospho-β-galactosidase GnbG from Lactobacillus casei BL23 that is involved in the metabolism of LNB and GNB. GnbG has been used here in transglycosylation reactions, and it showed the production of LNB and GNB with N-acetylglucosamine and N-acetylgalactosamine as acceptors, respectively...
October 7, 2016: Applied Microbiology and Biotechnology
Kenetta L Nunn, Larry J Forney
Four Lactobacillus species, namely L. crispatus , L. iners, L. gasseri, and L. jensenii, commonly dominate the vaginal communities of most reproductive-age women. It is unclear why these particular species, and not others, are so prevalent. Historically, estrogen-induced glycogen production by the vaginal epithelium has been proffered as being key to supporting the proliferation of vaginal lactobacilli. However, the 'fly in the ointment' (that has been largely ignored) is that the species of Lactobacillus commonly found in the human vagina cannot directly metabolize glycogen...
September 2016: Yale Journal of Biology and Medicine
Kai-Nan Zou, Li-Jie Ren, Yuan Ping, Ke Ma, Hui Li, Yu Cao, Huai-Gu Zhou, Yi-Liang Wei
In recent years, forensic scientists have focused on the discrimination of body fluids using microbial signatures. In this study, we performed PCR-based detection of microbial signatures of vaginal fluid, saliva, and feces in a Han Chinese population. We investigated the 16S rRNA genes of Lactobacillus crispatus, Lactobacillus gasseri, Lactobacillus jensenii, Lactobacillus iners, and Atopobium vaginae in vaginal fluid, the 16S rRNA and the glucosyltransferase enzyme genes of Streptococcus salivarius and Streptococcus mutans in saliva, and the 16S rRNA genes of Enterococcus species, the RNA polymerase β-subunit gene of Bacteroides uniformis and Bacteroides vulgatus, and the α-1-6 mannanase gene of Bacteroides thetaiotaomicron in feces...
October 2016: Journal of Forensic and Legal Medicine
Elham Mousavi, Manoochehr Makvandi, Ali Teimoori, Angila Ataei, Shokouh Ghafari, Mahin Najafian, Ziba Ourang, Alireza Samarbaf-Zadeh
BACKGROUND: The lactobacilli are a part of the bacterial flora of the human vagina. Detection of normal Lactobacillus species in the vaginas of healthy women in different geographical locations, and evaluation of their specific properties, can aid in the selection of the best species for preventing sexually transmitted diseases in the future. This study was performed to isolate and identify the Lactobacillus species in the vaginas of healthy women and to evaluate the adherence of these lactobacilli to Vero and HeLa cell lines...
August 22, 2016: Journal of the Chinese Medical Association: JCMA
Pirje Hütt, Eleri Lapp, Jelena Štšepetova, Imbi Smidt, Heleri Taelma, Natalja Borovkova, Helen Oopkaup, Ave Ahelik, Tiiu Rööp, Dagmar Hoidmets, Külli Samuel, Andres Salumets, Reet Mändar
BACKGROUND: Vaginal lactobacilli offer protection against recurrent urinary infections, bacterial vaginosis, and vaginal candidiasis. OBJECTIVE: To characterise the isolated vaginal lactobacilli strains for their probiotic properties and to compare their probiotic potential. METHODS: The Lactobacillus strains were isolated from vaginal samples by conventional culturing and identified by sequencing of the 16S rDNA fragment. Several functional properties were detected (production of hydrogen peroxide and lactic acid; antagonistic activity against Escherichia coli, Candida albicans, Candida glabrata, and Gardnerella vaginalis; auto-aggregation and adhesiveness) as well as safety (haemolytic activity, antibiotic susceptibility, presence of transferrable resistance genes)...
2016: Microbial Ecology in Health and Disease
Laura L Reimers, Supriya D Mehta, L Stewart Massad, Robert D Burk, Xianhong Xie, Jacques Ravel, Mardge H Cohen, Joel M Palefsky, Kathleen Weber, Xiaonan Xue, Kathryn Anastos, Howard Minkoff, Jessica Atrio, Gypsyamber D'Souza, Qian Ye, Christine Colie, Christine P Zolnik, Gregory T Spear, Howard D Strickler
BACKGROUND:  Bacterial vaginosis (BV) is characterized by low abundance of Lactobacillus spp., high pH, immune cell infiltration, and has been associated with increased risk of human papillomavirus (HPV) infection. We molecularly assessed the cervicovaginal microbiota over time in HIV-infected and HIV-uninfected women to more comprehensively study the HPV-microbiota relationship, controlling for immune status. METHODS:  16S rRNA gene amplicon pyrosequencing and HPV DNA testing was conducted annually in serial cervicovaginal lavage specimens obtained over 8-10 years in African American women from Chicago: (i) N=22 HIV-uninfected, (ii) N=22 HIV-infected with stable CD4 >500 cells/mm(3), (iii) N=20 HIV-infected women with progressive immunosuppression...
August 11, 2016: Journal of Infectious Diseases
Pairat Sornplang, Kattinet Sakulsawasdiphan, Sudthidol Piyadeatsoontorn, Benyapha Surasorn
The aim of this study was to investigate the susceptibility of 93 Lactobacillus strains to seven antimicrobial agents, i.e., penicillin G, amoxicillin-clavulanic acid, vancomycin, tetracycline, streptomycin, ciprofloxacin, and sulfamethoxazole-trimethoprim, by disk diffusion test. The Lactobacillus strains were isolated from fecal samples taken from 90 healthy, food-producing animals (fattening pigs, free-grazing ducks, and beef cattle) and 30 healthy human subjects (1- to 6-year-olds) in Khon Kaen. The minimum inhibitory concentration (MIC) values of tetracycline and ciprofloxacin against all strains were determined using the E-test...
August 4, 2016: Tropical Animal Health and Production
Atsushi Takagi, Hidetaka Yanagi, Hideki Ozawa, Naomi Uemura, Shigemi Nakajima, Kazuhiko Inoue, Takashi Kawai, Toshihiro Ohtsu, Yasuhiro Koga
Some Lactobacillus spp. suppress Helicobacter pylori in the stomach and have potential therapeutic applications for the treatment of gastrointestinal conditions. In this study, the effects of Lactobacillus strains on functional dyspepsia associated with H. pylori infection were examined. Volunteers were screened using the (13)C-urea breath test (UBT) and H. pylori stool test, and 131 participants who met the selection criteria (mean age: 48.9 years) were randomly given L. gasseri OLL2716-containing yogurt or placebo yogurt once daily for 12 weeks...
2016: Gastroenterology Research and Practice
Ayako Aoki-Yoshida, Kiyoshi Yamada, Satoshi Hachimura, Toshihiro Sashihara, Shuji Ikegami, Makoto Shimizu, Mamoru Totsuka
Food allergy is a serious problem for infants and young children. Induction of antigen-specific oral tolerance is one therapeutic strategy. Enhancement of oral tolerance induction by diet is a promising strategy to prevent food allergy in infants. Thus, in this study, we evaluate the effect of probiotic Lactobacillus gasseri OLL2809 (LG2809) on oral tolerance induction in a mouse model. The degree of oral tolerance induction was evaluated by measuring the proliferation and level of IL-2 production of splenic CD4+ T cells from DO11...
2016: PloS One
D Zhou, Y Cui, F L Wu, W H Deng
OBJECTIVE: To study the distribution characteristics of lactobacillus in the vaginal mucosa of patients with HPV infection. METHODS: The planting density of lactobacillus in vaginal secretions of 95 cases with HPV16/18 infection and 90 cases of normal women of childbearing age were observed by oil microscope. And the strains of vaginal lactobacilli in two groups were analyzed using species-specific polymerase chain reaction (Species-specific PCR) and the distribution of vaginal lactobacilli in patients with HPV16/18 infection were investigated...
July 5, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
O V Kalyuzhin, S S Afanasyev, A S Bykov
This review analyzes is expedient to use oral probiotics for the stimulation of immune response against pathogens in the respiratory tract. It considers a relationship between.mucosal microbial colonization in different biotopes of the body and mucosal.immunity in the respiratory tract. The principal and terminological controversial issues of colonic dysbiosis and the possibilities of using the medicines and products containing live commensals/symbionts to correct microbiota disturbances are examined...
2016: Terapevticheskiĭ Arkhiv
Tereza Volstatova, Jaroslav Havlik, Miroslava Potuckova, Martina Geigerova
Adhesion to the intestinal epithelium is considered an important feature of probiotic bacteria, which may increase their persistence in the intestine, allowing them to exert their beneficial health effect or promote the colonisation process. However, this feature might be largely dependent on the host specificity or diet. In the present study, we investigated the effect of selected milks and milk protein fractions on the ability of selected lactobacilli to adhere to the cells of an intestinal model based on co-culture Caco-2/HT29-MTX cell lines...
August 10, 2016: Food & Function
David W Hilbert, William L Smith, Teresa E Paulish-Miller, Sean G Chadwick, Geoffrey Toner, Eli Mordechai, Martin E Adelson, Jack D Sobel, Scott E Gygax
BACKGROUND: Recurrent bacterial vaginosis (BV) after antimicrobial therapy is a major problem, affecting >50% of patients within 1 year. The objective of this study was to determine if prospective identification of patients at risk for recurrence using molecular methods is feasible. METHODS: Women were evaluated for BV by Amsel criteria and Nugent score. Vaginal specimens were analyzed using a panel of quantitative real-time polymerase chain reactions (qPCRs) at three times: pre-treatment, 7-10days post-treatment and 40-45days post-treatment...
October 2016: Diagnostic Microbiology and Infectious Disease
Young-Keun Kwak, Katalin Daroczy, Patricia Colque, Inger Kühn, Roland Möllby, Helena Kopp Kallner
AIM: To investigate the ability of lactobacilli to persist in the genital area (vagina and labia) of women after the topical application of an ointment containing Lactobacillus gasseri LN40, L. fermentum LN99 and L. rhamnosus LN113. Secondary objectives were to study the presence of Escherichia coli and other contaminants, as well as subjective symptoms in the genital tract. METHODS: Eighteen healthy postmenopausal women were randomized to use either the study product or placebo for 10 days...
July 5, 2016: Gynecologic and Obstetric Investigation
Paola Nardini, Rogers Alberto Ñahui Palomino, Carola Parolin, Luca Laghi, Claudio Foschi, Roberto Cevenini, Beatrice Vitali, Antonella Marangoni
Lactobacillus species dominate the vaginal microbiota of healthy reproductive-age women and protect the genitourinary tract from the attack of several infectious agents. Chlamydia trachomatis, a leading cause of sexually transmitted disease worldwide, can induce severe sequelae, i.e. pelvic inflammatory disease, infertility and ectopic pregnancy. In the present study we investigated the interference of Lactobacillus crispatus, L. gasseri and L. vaginalis, known to be dominant species in the vaginal microbiome, with the infection process of C...
2016: Scientific Reports
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