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Probiotics and Antimicrobial Proteins

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https://www.readbyqxmd.com/read/28233282/safety-of-lactobacillus-plantarum-st8sh-and-its-bacteriocin
#1
Svetoslav Dimitrov Todorov, Luana M Perin, Bruno M Carneiro, Paula Rahal, Wilhelm Holzapfel, Luís Augusto Nero
Total DNA extracted from Lb. plantarum ST8Sh was screened for the presence of more than 50 genes related to production of biogenic amines (histidine decarboxylase, tyrosine decarboxylase, and ornithine decarboxylase), virulence factors (sex pheromones, gelatinase, cytolysin, hyaluronidase, aggregation substance, enterococcal surface protein, endocarditis antigen, adhesion of collagen, integration factors), and antibiotic resistance (vancomycin, tetracycline, erythromycin, gentamicin, chloramphenicol, bacitracin)...
February 23, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28229287/role-of-neurochemicals-in-the-interaction-between-the-microbiota-and-the-immune-and-the-nervous-system-of-the-host-organism
#2
Alexander V Oleskin, Boris A Shenderov, Vladimir S Rogovsky
This work is concerned with the role of evolutionary conserved substances, neurotransmitters, and neurohormones, within the complex framework of the microbial consortium-immune system-nervous system axis in the human or animal organism. Although the operation of each of these systems per se is relatively well understood, their combined effects on the host organism still await further research. Drawing on recent research on host-produced and microbial low-molecular-weight neurochemicals such as biogenic amines, amino acids, and short-chain fatty acids (SCFAs), we suggest that these mediators form a part of a universal neurochemical "language...
February 22, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28210874/erratum-to-effect-of-lactobacillus-reuteri-on-cell-viability-and-pge2-production-in-human-gingival-fibroblasts
#3
Gina A Castiblanco, Tulay Yucel-Lindberg, Stefan Roos, Svante Twetman
No abstract text is available yet for this article.
February 16, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28205137/erratum-to-effect-of-probiotic-bacillus-coagulans-and-lactobacillus-plantarum-on-alleviation-of-mercury-toxicity-in-rat
#4
Majid Majlesi, Seyed Shahram Shekarforoush, Hamid Reza Ghaisari, Saeid Nazifi, Javad Sajedianfard, Mohammad Hadi Eskandari
No abstract text is available yet for this article.
February 15, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28188477/probiotic-potential-of-a-lactobacillus-bacterium-of-canine-faecal-origin-and-its-impact-on-select-gut-health-indices-and-immune-response-of-dogs
#5
Sachin Kumar, Ashok Kumar Pattanaik, Shalini Sharma, Sunil Eknath Jadhav, Narayan Dutta, Avneesh Kumar
The objective of the present study was to develop a probiotic of canine-origin for its potential application in pet nutrition. Accordingly, 32 lactic acid bacteria (LAB) strains were isolated from faeces of dogs, out of which 9 strains were short-listed for further in vitro testing based on the aggregation time and cell surface hydrophobicity. The results of acid-, bile- and phenol-tolerance tests indicated that out of the nine, isolate cPRO23 was having better resistance to these adverse conditions likely to be encountered in the gastrointestinal tract...
February 10, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28155128/lactobacillus-plantarum-as-a-probiotic-potential-from-kouzeh-cheese-traditional-iranian-cheese-and-its-antimicrobial-activity
#6
Vahid Jabbari, Mahmoud Sowti Khiabani, Reza Rezaei Mokarram, Azad Mohammad Hassanzadeh, Elham Ahmadi, Sasan Gharenaghadeh, Nayyer Karimi, Hossein Samadi Kafil
The aim of this study is to isolate and identify Lactobacillus plantarum isolates from traditional cheese, Kouzeh, and evaluate their antimicrobial activity against some food pathogens. In total, 56 lactic acid bacteria were isolated by morphological and biochemical methods, 12 of which were identified as Lactobacillus plantarum by biochemical method and 11 were confirmed by molecular method. For analyzing the antimicrobial activity of these isolates properly, diffusion method was performed. The isolates were identified by 318 bp band dedicated for L...
February 2, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28084611/effect-of-probiotic-bacillus-coagulans-and-lactobacillus-plantarum-on-alleviation-of-mercury-toxicity-in-rat
#7
Majid Majlesi, Seyed Shahram Shekarforoush, Hamid Reza Ghaisari, Saeid Nazifi, Javad Sajedianfard, Mohammad Hadi Eskandari
The objective of this study was to evaluate the efficiency of probiotics (Lactobacillus plantarum and Bacillus coagulans) against mercury-induced toxicity using a rat model. Mercury (Hg) is a widespread heavy metal and was shown to be associated with various diseases. Forty-eight adult male Wistar rats were randomly divided into six groups (control, mercury-only, each probiotic-only, and mercury plus each probiotic group). Hg-treated groups received 10 ppm mercuric chloride, and probiotic groups were administrated 1 × 10(9) CFU of probiotics daily for 48 days...
January 13, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28083809/effects-of-dietary-bacillus-licheniformis-on-gut-physical-barrier-immunity-and-reproductive-hormones-of-laying-hens
#8
Yang Wang, Wei Du, Kai Lei, Baikui Wang, Yuanyuan Wang, Yingshan Zhou, Weifen Li
Previous study showed that dietary Bacillus licheniformis (B. licheniformis) administration contributes to the improvement of laying performance and egg quality in laying hens. In this study, we aimed to further evaluate its underlying mechanisms. Three hundred sixty Hy-Line Variety W-36 hens (28 weeks of age) were randomized into four groups, each group with six replications (n = 15). The control group received the basal diet and the treatment groups received the same basal diets supplemented with 0.01, 0...
January 13, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28083808/heat-acclimation-of-bifidobacterium-longum-and-proteomic-changes-behind-it
#9
Hongbin Wang, Yu Li, Yong Zhang, Qinglong Xi, Yueting Cao, Fuping Lu
Bifidobacterium is an important probiotic bacterium and extensively applied to functional food. Its survival is strongly affected by the heat-shock process during manufacture. Acclimation is thought to be able to enhance Bifidobacterium's resistance to heat stress; however, so far little is known about the protein expression changes underlying the adaptation process. In this study, the appropriate acclimation temperature for Bifidobacterium longum was determined as 43 °C, and 2-dimensional gel electrophoresis-based proteomic analysis was performed to reveal the protein changes in expression levels behind heat acclimation...
January 12, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28063116/in-vivo-assessment-of-immunogenicity-and-toxicity-of-the-bacteriocin-tsu4-in-balb-c-mice
#10
Tapasa Kumar Sahoo, Prasant Kumar Jena, Bhumika Prajapati, Laxita Gehlot, Amiya Kumar Patel, Sriram Seshadri
Bacteriocin TSU4 is a novel antimicrobial peptide isolated from Catla catla gut isolate Lactobacillus animalis TSU4. It has been reported for its potential antimicrobial activity against fish pathogens and food spoilage bacteria. In vivo safety evaluation is necessary to determine its immunogenicity, toxicity, and importance in real-life applications. The present study was designed to evaluate the immunogenicity, acute and sub-chronic toxicity of bacteriocin TSU4 in BALB/c mice to ensure its safety in industrial application...
January 6, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28044254/prebiotics-prosynbiotics-and-synbiotics-can-they-reduce-plasma-oxidative-stress-parameters-a-systematic-review
#11
Amin Salehi-Abargouei, Reza Ghiasvand, Mitra Hariri
This study assessed the effectiveness of presybiotics, prosybiotics and synbiotics on reducing serum oxidative stress parameters. PubMed/Medline, Ovid, Google Scholar, ISI Web of Science and SCOPUS were searched up to September 2016. English language randomized clinical trials reporting the effect of presybiotics, prosybiotics or synbiotic interventions on serum oxidative stress parameters in human adults were included. Twenty-one randomized clinical trials met the inclusion criteria for systematic review. Two studies investigated prebiotics, four studies synbiotics and fifteen studies probiotics...
January 3, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28028690/effect-of-lactobacillus-reuteri-on-cell-viability-and-pge2-production-in-human-gingival-fibroblasts
#12
Gina A Castiblanco, Tulay Yucel-Lindberg, Stefan Roos, Svante Twetman
Emerging evidence suggests that probiotic therapy can play a role in the prevention and management of oral inflammatory diseases through immunomodulation and down-regulation of the inflammatory cascade. The aim of this in vitro study was to investigate the viability of human gingival fibroblasts (HGF) and its production of prostaglandin E2 (PGE2), when exposed to supernatants of two mixed Lactobacillus reuteri strains (ATCC PTA 5298 and DSM 17938). The experiments were conducted in the presence and absence of the pro-inflammatory cytokine IL-1β...
December 27, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27981504/isolation-identification-and-screening-of-potential-probiotic-bacteria-in-milk-from-south-african-saanen-goats
#13
Goitsemang Makete, Olayinka A Aiyegoro, Mapitsi S Thantsha
This study aimed to evaluate lactic acid bacteria isolates from Saanen goats' milk for probiotic attributes, thereby determining their potential as direct-fed microbials for goats. Isolates were identified using API 50CH system, 16S rDNA sequencing and matrix-assisted laser desorption ionization-time of flight mass spectrometry. All 17 isolates obtained were identified as Lactobacillus plantarum except one identified as Pediococcus acidilactici. Four isolates identified as L. plantarum (Accession numbers KJ026587...
December 15, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27943051/effect-of-lactobacillus-plantarum-tennozu-su2-on-salmonella-typhimurium-infection-in-human-enterocyte-like-ht-29-luc-cells-and-balb-c-mice
#14
Shino Hirano, Yasushi Yokota, Mika Eda, Takashi Kuda, Ayane Shikano, Hajime Takahashi, Bon Kimura
The probiotic properties and inhibitory effect on Salmonella Typhimurium adhesion on human enterocyte-like HT-29-Luc cells of three Lactobacillus plantarum strains isolated from fermented fish, beach sand and a coastal plant were determined. Compared with the type strain L. plantarum NBRC 15891(T), which was isolated from pickled cabbage, L. plantarum Tennozu-SU2 isolated from the acorn of a coastal tree showed high autoaggregation in de Man, Rogosa and Sharpe (MRS) broth and an antagonistic effect against S...
December 10, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27943050/in-vitro-evaluation-of-beneficial-properties-of-bacteriocinogenic-lactobacillus-plantarum-st8sh
#15
Svetoslav Dimitrov Todorov, Wilhelm Holzapfel, Luis Augusto Nero
Lactobacillus plantarum ST8Sh, isolated from Bulgarian salami "shpek" and previously characterized as bacteriocin producer, was evaluated for its beneficial properties. Based on the PCR analysis, Lb. plantarum ST8Sh was shown to host a gene related to the production of adhesion proteins such as Mab, Mub, EF, and PrgB. Genetic and physiological tests suggest Lb. plantarum ST8Sh to represent a potential probiotic candidate, including survival in the presence of low levels of pH and high levels of ox bile, production of β-galactosidase, bile salt deconjugation, high level of hydrophobicity, functional auto- and co-aggregation properties, and adhesion to cell lines...
December 10, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27943049/functional-properties-of-lactobacillus-mucosae-strains-isolated-from-brazilian-goat-milk
#16
Georgia Maciel Dias de Moraes, Louricélia Rodrigues de Abreu, Antônio Silvio do Egito, Hévila Oliveira Salles, Liana Maria Ferreira da Silva, Luís Augusto Nero, Svetoslav Dimitrov Todorov, Karina Maria Olbrich Dos Santos
The search for probiotic candidates among lactic acid bacteria (LAB) isolated from food may uncover new strains with promising health and technological properties. Lactobacillus mucosae strains attracted recent research attention due to their ability to adhere to intestinal mucus and to inhibit pathogens in the gastrointestinal tract, both related to a probiotic potential. Properties of interest and safety aspects of three Lb. mucosae strains (CNPC006, CNPC007, and CNPC009) isolated from goat milk were investigated employing in vitro tests...
December 10, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27914002/phenotypic-and-genotypic-characterization-of-bacteriocinogenic-enterococci-against-clostridium-botulinum
#17
Awad A Shehata, Reda Tarabees, Shereen Basiouni, Mahmoud Gamil, Ahmed S Kamal, Monika Krüger
The present study aimed to characterize Enterococcus faecalis (n = -6) and Enterococcus faecium (n = 1) isolated from healthy chickens to find a novel perspective probiotic candidate that antagonize Clostridium botulinum types A, B, D, and E. The isolated enterococci were characterized based on phenotypic properties, PCR, and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF). The virulence determinants including hemolytic activity on blood agar, gelatinase activity, sensitivity to vancomycin, and presence of gelatinase (gelE) and enterococcal surface protein (esp) virulence genes were investigated...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27914001/subtilosin-prevents-biofilm-formation-by-inhibiting-bacterial-quorum-sensing
#18
Ammar Algburi, Saskia Zehm, Victoria Netrebov, Anzhelica B Bren, Vladimir Chistyakov, Michael L Chikindas
Subtilosin, the cyclic lantibiotic protein produced by Bacillus subtilis KATMIRA1933, targets the surface receptor and electrostatically binds to the bacterial cell membrane. In this study, subtilosin was purified using ammonium sulfate ((NH4)2SO4) precipitation and purified via column chromatography. Subtilosin's antibacterial minimum and sub-minimum inhibitory concentrations (MIC and sub-MIC) and anti-biofilm activity (biofilm prevention) were established. Subtilosin was evaluated as a quorum sensing (QS) inhibitor in Gram-positive bacteria using Fe(III) reduction assay...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27812926/purification-and-characterization-of-a-novel-anti-campylobacter-bacteriocin-produced-by-lactobacillus-curvatus-dn317
#19
Mohamed Zommiti, Hamdan Almohammed, Mounir Ferchichi
The lactic acid bacteria (LAB) microbiota of Saudi chicken ceca was determined. From 60 samples, 204 isolates of lactic acid bacteria were obtained. Three isolates produced antimicrobial activities against Campylobacter jejuni, Listeria monocytogenes, and Bacillus subtilis. The isolate DN317, which had the highest activity against Campylobacter jejuni ATCC 33560, was identified as Lactobacillus curvatus (GenBank accession numbers: KX353849 and KX353850). Full inhibitory activity was observed after a 2-h incubation with the supernatant at pH values between 4 and 8...
December 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27797005/purification-of-antibacterial-chapk-protein-using-a-self-cleaving-fusion-tag-and-its-activity-against-methicillin-resistant-staphylococcus-aureus
#20
Elahe Seyed Hosseini, Rezvan Moniri, Yasaman Dasteh Goli, Hamed Haddad Kashani
Therapeutic LysK-CHAP is a potent anti-staphylococcal protein that could be utilized as an antibiotic substitute. Intein-mediated protein purification is a reasonable and cost-effective method that is most recently used for recombinant therapeutic protein production. Intein (INT) is the internal parts of the protein that can be separated from the immature protein during protein splicing process. This sequence requires no specific enzyme or cofactor for separation. INT sequence and their characteristic of self-cleavage by thiol induction, temperature, and pH changes are used for protein purification...
December 2016: Probiotics and Antimicrobial Proteins
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