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Visar resultat 1 - 5 av 24 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Early-life gut microbiota and breast milk oligosaccharides in relation to childhood immune maturation and allergy

    Författare :Ylva Margareta Sjögren; Eva Sverremark-Ekström; Outi Vaarala; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; allergy; infant; gut microbiota; human milk oligosaccharides; Bifidobacterium; Lactobacillus; Bacteroides fragilis; Clostridium difficile; family size; secretory IgA; toll like receptor; Immunology; Immunologi; immunologi; Immunology;

    Sammanfattning : Atopic allergy is the most common chronic disease among children in the developed world. This high prevalence could be associated with low microbial exposure. The early gut microbiota appears to be important for immune maturation. LÄS MER

  3. 2. Evolution of symbiotic lineages and the origin of new traits

    Författare :Daniel Tamarit; Siv G. E. Andersson; Lisa Klasson; Amparo Latorre; Julian Parkhill; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; symbiosis; host-association; Lactobacillus; Bifidobacterium; Rhizobiales; Bartonella; honeybees; ants; codon usage bias; genome architecture; genome organization; gene transfer agent; evolutionary genomics; comparative genomics; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

    Sammanfattning : This thesis focuses on the genomic study of symbionts of two different groups of hymenopterans: bees and ants. Both groups of insects have major ecological impact, and investigating their microbiomes increases our understanding of their health, diversity and evolution. LÄS MER

  4. 3. Prebiotic Oligosaccharides from Xylan: Heat Pretreatment, Xylanase Hydrolysis, Utilization by Potential Probiotics and Evaluation in a Mouse Study

    Författare :Peter Falck; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; arabinoxylan; xylooligosaccharides; arabinoxylooligosaccharides; Bifidobacterium; Lactobacillus;

    Sammanfattning : Modulation of the gut microbiota with prebiotic oligosaccharides from partially hydrolyzed xylans can be part of the solution for reducing the occurrence of many health problems such as diabetes, cardiovascular disease and cancer. Prebiotics are carbohydrates that selectively stimulate health beneficial bacteria in the colon, restoring homeostasis to the gut environment. LÄS MER

  5. 4. An exploratory journey into probiotic interactions : Bioactive properties of Limosilactobacillus reuteri and Bifidobacterium longum

    Författare :Ludwig Lundberg; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Probiotics are defined as live microorganisms that, when administered in adequate amounts, confer a health benefit on the host. The mechanisms by which probiotics affect the host are based on one of two principles: i) directly, by interacting with specific targets, or ii) indirectly, by contributing to the ecological niche constructions of the microbiota. LÄS MER

  7. 5. Impact of Bifidobacterium longum and Lactobacillus acidophilus on the intestinal microflora and bioavailability of some food mutagens

    Författare :Kerstin Orrhage; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The gastrointestinal microflora is a complex ecological system, normally characterised by a flexible equilibrium. The most important role of the microflora, from the point of view of the host, is probably to act in colonisation resistance against exogenous, potentially pathogenic, microorganisms. LÄS MER