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Sunday, May 3, 2020 | History

2 edition of Antigenic components of lactobacilli of human oral origin. found in the catalog.

Antigenic components of lactobacilli of human oral origin.

Ned Blanchard Williams

Antigenic components of lactobacilli of human oral origin.

  • 291 Want to read
  • 18 Currently reading

Published in [n.p .
Written in English

    Subjects:
  • Lactobacillus.,
  • Mouth -- Microbiology.,
  • Antigens and antibodies.

  • Classifications
    LC ClassificationsQR82.L3 W5
    The Physical Object
    Pagination[31]-41 p.
    Number of Pages41
    ID Numbers
    Open LibraryOL194603M
    LC Control Numbera 49000251
    OCLC/WorldCa16641053

    that several Lactobacilli stimulated transepithelial calcium transport across fully differentiated Caco-2 cell monolayers in culture, a suitable in vitro model for predicting calcium absorption in humans (Fleet and Wood, ). In the present study, we investigated the effect of a well-characterized probiotic Lactobacillus. Start studying Experiment Microbial Flora of the Mouth; Detmination of Susceptibility to Dental Caries. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This study was carried out to identify Lactobacillus species isolated from different kinds of traditional and local cheeses and yoghurts of Basmenj zone in identities of the isolates were based on morphological, cultural, physiological and biochemical characteristics of lactobacilli as presented in the Bergey’s Manual of Systematic Bacteriology. A. Lipoteichoic Acid and Other Antigens.- Lipoteichoic Acid - The Key to the Adhesiveness of Sucrose Grown Streptococcus Mutans.- Amphipathic Antigens of Oral Microorganisms - Immunogenicity and Other Biological Properties.- Effect of Growth Conditions on the Antigenic Components of Streptococcus mutans and Lactobacilli

    On example of Lactobacillus and Bifidobacterium strains, approaches in creation of human multistrain probiotic metabolite mixtures for different goals were proposed. Human probiotic lectin systems (LS) (mucosal, others) reveal functions needed for organism. Advanced features of such systems include capability to recognize synthetic polymeric polyvalent glycoconjugates (GC)—imitators of Author: Mikhail V. Lakhtin, Vladimir M. Lakhtin, Vladimir A. Aleshkin, Stanislav S. Afanasiev.


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Antigenic components of lactobacilli of human oral origin. by Ned Blanchard Williams Download PDF EPUB FB2

Five strains of lactobacilli isolated from the saliva of patients with dental caries were administered to rabbits as a dead vaccine by repeated intravenous injection. Agglutination and agglutinin absorption tests carried out with the resulting antisera indicated the presence of four antigenic components designated A, B, C and D.

The presence is noted of a further poorly defined component z, to Cited by: Can anyone explain how the lactobacilli are from human origin. Probiotics should belong to human origin on the basis of scientific study performed so far Probiotic lactobacilli and oral health.

Antigenic variation or antigenic alteration refers to the mechanism by which an infectious agent such as a protozoan, bacterium or virus alters the proteins or carbohydrates on its surface and thus avoids a host immune is related to phase nic variation not only enables the pathogen to avoid the immune response in its current host, but also allows re-infection of.

A major new reference for all medical Antigenic components of lactobacilli of human oral origin. book, dairy technologists, microbiologists and biotechnologists in the academic and industrial sectors.

Written by an international team of scientists the volume focuses on recent research on the molecular biology and genomics of Lactobacillus. Topics covered include phylogenetics, taxonomy, comparative genomics, functional genomics, the intestinal. Characterisation of probiotic properties in human vaginal lactobacilli strains Article (PDF Available) in Microbial Ecology in Health and Disease 27 August with Reads How we measure.

A better resistance of strains of human origin in simulated gastrointestinal conditions compared to strains of dairy origin has been reported (Prasad et al., ).

However, Haller et al. () showed that the metabolic and functional properties of intes-tinal lactobacilli are also found in certain bacteria. Introduction. Lactobacilli are non-spore-forming, gram-positive rods that are an important part of the normal human bacterial flora commonly found in the mouth, gastrointestinal (GI) tract and female genitourinary tract (1, 2, 3).Microscopically, these bacteria appear as non-motile, thin rods varying in length from long to by:   The genus Lactobacillus comprises a large heterogeneous group of low-G+C Gram-positive, non-sporulating, and facultative anaerobes [].Taxonomically, the genus Lactobacillus belongs to the phylum Firmicutes, class Bacilli, order Lactobacillales, family tly the genus Lactobacillus contains species of which more than 20 have been sequenced.

A novel preparation for human use was investigated for probiotic properties of new lactobacilli isolates from oral and fecal samples of children.

Identified strains were Lactobacillus plantarum (Lac1, Lac2, Lac6, and Lac7), Lactobacillus casei (Lac3), and Lactobacillus paracasei (Lac4). Isolates were non-hemolytic, produced organic acids, were tolerant to wide ranges of temperature, Cited by: 2. Ned Blanchard Williams has written: 'Antigenic components Antigenic components of lactobacilli of human oral origin.

book lactobacilli Antigenic components of lactobacilli of human oral origin. book human oral origin' -- subject(s): Microbiology, Mouth, Antigens and antibodies, Lactobacillus Asked in Actors & Actresses. Structure and Metabolism. This large group plays an important and varied role in human health.

Lactobacilli [sing: lactobacillus] are a rod-shaped, Gram-positive, fermentative, facultative anaerobic or microaerophilic organotrophs. Normally, they form straight rods Antigenic components of lactobacilli of human oral origin.

book under certain conditions spiral or coccobacillary forms have been observed. Lactobacillus mucosae is a rod shaped species of lactic acid bacteria first isolated from pig intestines. It has mucus-binding species is an obligate anaerobe, catalase-negative, doesn't form spores and is type strain is S32T, and has been found to Class: Bacilli.

The lactobacilli strains were confronted to C. albicans, which is responsible for at least 85% of human candidiasis (Rein, ), and A. neuii, which is the second most frequent microorganism isolated Antigenic components of lactobacilli of human oral origin.

book the Ison and Hay grade II and III vaginal microbiota represented by bacterial vaginosis-related organisms (Verhelst et al., ) and has been Cited by: The present conference is the third in a series on this topic sponsored by the NCP. Drs. HcGhee, l1estecky, Genco and Bowen are to be commended for arranging this truly comprehensive program.

We are fortunate that they have been able to assemble such a wealth of expertise. Program staff considers. Abstract. Lactobacilli were found in saliva, on teeth, and on the dorsum of the tongue, the vestibular mucosa, and the hard palate in humans.

Their proportions in saliva, expressed as percentage of the anaerobically cultivable flora, were to fold higher than those on the tooth surface, but were comparable to those on the epithelial by: Bacterial Antigenic Structure - Free download as Powerpoint Presentation .ppt), PDF File .pdf), Text File .txt) or view presentation slides online.1/5(1).

Gnotobiology technology for the breeding of experimental mice originated in the first half of the twentieth century. Earlier studies conducted in germ-free animals revealed the importance of the microbiota in the development of the immune system, gut morphology, and by: 2. Antigenic analyses of Lactobacillus fermenti were carried out by double immunodiffusion in agar using extracts prepared with cold trichloroacetic acid (TCA) or hot dilute hydrochloric acid (HCL).

A common antigen of L. fermenti, designated as antigen f by the author, was extracted from whole cells with dilute HCL, but not with by: 3. The competitive exclusion of E. coli by lactobacilli over the intestinal epithelial cells (IEC) was checked.

acidophilus strain I, which was of poultry origin, exhibited maximum attachment over IEC as compared to other three strains of non-poultry origin viz.

acidophilus strain II, L. sporogenes strain I and II. Antigenic Composition of Bacteria Lecture Slides are screen-captured images of important points in the lecture.

Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture. ORAL IMMUNOLOGYThe health of the mouth is dependent on the integrity of mucosa,saliva, gingival crevicular fluid and their immune components, whichdoes not normally allow microorganisms to oral tissues are drained by an anatomically well defined collectionof extraoral lymph nodes and intraoral lymphoid tissue aggregations.I The.

Bacterial surface structures may act as (1) permeability barriers that allow selective passage of nutrients and exclusion of harmful substances (e.g. antimicrobial agents); (3) adhesins used to attach or adhere to specific surfaces or tissues; (3) enzymes to mediate specific reactions on.

Lactobacillus species can exert health promoting effects in the gastrointestinal tract (GIT) through many mechanisms, which include pathogen inhibition, maintenance of microbial balance, immunomodulation, and enhancement of the epithelial barrier function. Different species of the genus Lactobacillus can evoke different responses in the host, and not all strains of the same species can be Cited by: 53 Schroten H, Hanisch FG, Plogmann R, Hacker J, Uhlenbruck G, Nobis-Bosch R, et al.

Inhibition of adhesion of S-fimbriated Escherichia coli to buccal epithelial cells by human milk fat globule membrane components: a novel aspect of the protective function of mucins in the nonimmunoglobulin by:   Two live, attenuated rotavirus A (RVA) vaccines, Rotarix and RotaTeq, have been successfully introduced into national immunization programs worldwide.

The parent strains of both vaccines were obtained more than 30 years ago. Nonetheless, only very limited data are available on the molecular similarity of the vaccine strains and their genetic relationships to the wild-type strains Cited by: 7.

tochthonous lactobacilli from allochthonous or transiently passing lactobacilli, for instance, originating from fermented foods or from the oral cavity, which is home to a considerable amount of lactobacilli ().

Lactobacilli seem to form only a minor proportion of the human adult fecal microbiota, i.e. Introduction. Probiotics are ‘live microorganisms, which when administered in adequate amounts, confer a health benefit upon the host’ (FAO/WHO, ).Probiotic microorganisms are associated with several health benefits related to the maintenance of mucosal homeostasis and the immune system, which have the potential for improving human health through prophylactic and Cited by: The intestinal microbiota is essential to the maturation and homeostasis of the immune system.

Immunoblot assays were used to establish the prevalence of serum IgG, IgM, and IgA antibodies specific for Bifidobacterium adolescentis, Bifidobacterium longum, and Lactobacillus rhamnosus GG proteins in young children presenting with or without type 1 diabetes (T1D).Cited by: 7.

Isolation and Biochemical Characterization of Lactobacillus species Isolated from Dahi P. Kavitha*, D. Sindhuja and M. Banumathi balanced diet for human beings as these products provide a wide range of essential collected for the isolation of Lactobacilli using Lactobacillus selection MRS agar.

The genus Lactobacillus is a diverse group with a combined species count of over They are the largest group within the lactic acid bacteria and one of the most important bacterial groups involved in food microbiology and human nutrition because of their fermentative and probiotic : Hugh Harris.

The immune system is a host defense system comprising many biological structures and processes within an organism that protects against function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy many species, there are two major subsystems of the immune.

The main purpose of this work is to give an overview on the chemical engineering aspects related with the production of probiotic cultures and bacteriocins. Firstly, some evidence of the potential of different Lactococci and Lactobacilli strains for prevention or treatment of different human diseases, or as growth promoters in farm animals is.

Responses of human Mo-DC to lactobacilli and their exopolysaccharides The capabilities of the lactobacillus strains and their EPS to stimulate the Cited by: 9. A human origin strain Lactobacillus acidophilus DDS-1 exhibits superior in vitro probiotic efficacy in comparison to plant or dairy origin probiotics Ravichandra Vemuri1, Tanvi Shinde2, Madhur D Shastri1, Agampodi Promoda Perera1, Stephen Tristram 1, Christopher J Martoni3, Rohit Gundamaraju1, Kiran D K Ahuja, Madeleine Ball4, Rajaraman Eri1 Size: KB.

Bovine colostral antibodies and selected lactobacilli as means to control gastrointestinal infections Doctoral Dissertation Susanna Rokka To be presented, with the permission of the Faculty of Mathematics and Natural Sciences of the University of Turku, for public criticism in Auditorium I of Arcanum, on September 26th,at 12 o’clock noon.

Bacterial Components Lipopolysaccharides Lipopolysaccharide (LPS) is the majorcomponent of the outer membrane of Gram-negative bacteria. Lipopolysaccharide is localized in the outer layer of the membrane and is, in noncapsulated strains, exposed on the cell surface.

Structure Intact bacterial lipopolysaccharides are macromolecules of molecularFile Size: KB. Oral Microbiology Oral Microbiology Harrison, R W By R. HARRISON The Central Administration, The University of Chicago Chicago, Illinois The bacterial flora of the mouth is sufficiently complex (1 to 4) and variable (1, 5) to discourage attempts at complete analysis.

Most of the microorganisms which are associated with oral infec­ tion, or with systemic infections. DNA sequences (kbp) that can move from one site in bacterium to another site; encode an enzyme (transposase) that mediates excision and random (or preferential) integration of the IS; simplest transposable element; Insertion sequences have two major characteristics: they are small relative to other transposable elements (generally around to bp in length) and only code for proteins.

Lactobacilli of food origin are commercially important in the production of dairy products, fermented meats, vegetables, and sourdough, and many of their properties have been well studied. Commensal lactobacilli are good candidates for development as probiotics.

In recent years, the general biology and host interaction mechanisms of commensal. To unravel the biological function of the widely used probiotic bacterium Lactobacillus rhamnosus GG, we compared its Mbp genome sequence with the similarly sized genome of L.

rhamnosus LC, an adjunct starter culture exhibiting reduced binding to mucus. Both genomes demonstrated high sequence identity and synteny. However, for both strains, genomic islands, 5 in.

Walls of gram-positive pdf are dynamically variable and flexible structures that enclose and protect the underlying cytoplasmic membranes.

The pdf serves to protect the underlying protoplast, resist turgor, and maintain the shape of the cell. The wall in B. subtilis, like the walls in many other gram-positive bacteria, is composed mainly of peptidoglycan and one or more anionic by: Healthy vaginal microbiota is dominated by Download pdf spp., which form a critical line of defence against pathogens, including Candida spp.

The present study aims to identify vaginal lactobacilli exerting in vitro activity against Candida spp. and to characterize their antifungal mechanisms of action. Lactobacillus strains were isolated from vaginal swabs of healthy premenopausal women.as a common name for all lactobacilli.

Ebook, certain workers have delim-ited the species ebook a number of physio-logical tests. Thus Orla-Jensen et al () described in detail a species that can be isolated from feces of man and other mammals. He rejected the name L.

acidophilus and introduced Thermo-bacterium intestinale instead to identify.