1st Edition

Germfree and Gnotobiotic Animal Models Background and Applications

By Bernard S. Wostmann Copyright 1996

    The germfree animal is reared in the laboratory to be bacteria free; its counterpart, the gnotobiotic animal, is exposed to select microorganisms. The need for such an animal model for use in biomedical studies was first expressed by Pasteur in the late 1800s. Subsequent development of germfree and gnotobiotic animals led to an explosion of studies on the effects of microflora and its components on the physiology and metabolism of the host. Germfree and Gnotobiotic Animal Models brings together the most notable points of early and recent studies and gives reference to the most pertinent literature.

    Introduction
    Early Growth, Body Weight, Reproduction, and Life Span
    General Aspects
    Growth
    Body Weight of the Mature Animal
    Reproduction
    Life Span
    Conclusions
    Anatomy, Morphology, and Function of the Gastrointestinal System
    General Aspects
    Stomach
    Small Intestine
    Cecum
    Large Intestine
    Conclusions
    Morphology and Physiology, Endocrinology and Biochemistry
    General Aspects
    Energy Metabolism
    Liver Function
    Cholesterol and Bile Acid Metabolism
    Rats and Mice
    Gerbils
    Dogs and Pigs
    Other Indicators of Function
    Water Balance and Kidney Function
    Mineral Metabolism
    Endocrine System
    Conclusions
    Nutrition
    General Aspects
    Early Rat and Mouse Diets
    Hand-Feeding of the Cesarean-Derived Newborn
    Solid Diets
    Further Development of Rat and Mouse Diets
    Sterilization of Solid Diets
    Metabolic Requirements of Germfree Rats and Germfree Mice-Contributions of the Microflora
    Dietary Energy Requirements
    Proteins and Amino Acids
    Vitamin B Complex-Microflora Production
    Fat-Soluble Vitamins
    Minerals
    Inositol, Ubiquinone, and Queuine
    The Chemically Defined Diet
    General Aspects
    Development of the Chemically Defined Diet
    Procedures
    Present Status
    Dietary Antigenicity and Immune Potential
    Immunology, Including Radiobiology and Transplantation
    General Aspects
    Early Studies: Immune Potential of Germfree Rats and Mice Maintained on Solid Diets
    Antibody-Forming Potential
    Phagocytosis
    B Cells, T Cells, and NK Cells
    Immune Globulins
    Natural Antibody
    Cytokinins
    Radiation Biology and Bone Marrow Transplantation
    Immunological Evaluation of GF Mice Maintained on a Chemically Defined, Low Molecular Weight Antigen-Free Diet
    Conclusions
    Parasitology
    General Aspects
    Effects of the Microflora Via Nutrient Availability and the Immune System
    Protozoa
    Nematodes
    Helminths
    Schistosomiasis and Chagas' Disease
    Cestodes
    Pathology Over the Life Span of the Germfree Rat and the Germfree Mouse
    General Aspects
    Tumors and Tumor-Related Viruses
    Conclusions
    Applications: Past, Present, and Future. Part I
    Introduction
    Microbial Action and Interaction in Gnotobiotic Systems: Colonization Resistance and Translocation Studies
    Controlled Microbial Association
    Colonization Resistance
    Materials with Antimicrobial Action
    Translocation Studies
    Applications: Past, Present, and Future. Part II.
    Use of the Gnotobiote in the Study of Disease
    The Aging Syndrome
    "Endpoint Studies"
    Lobund Aging Study
    Cancer Research
    Role of the Microflora in Steroid Metabolism and Cardiovascular Disease
    Dental Caries and Periodontal Disease Studies
    Dental Caries
    Periodontal Disease
    Radiation Biology: Role of the Microflora and Effect of Bacterial Lipopolysaccharides (LPS)
    The Shock Syndrome: Potential Influence of LPS
    Hemorrhagic Shock
    Thermal Shock
    Intestinal Strangulation
    Tourniquet Shock
    Ulcerative Colitis
    Studies of Swine Disease
    Applications: Past, Present, and Future. Part III. The Production of Monoclonal Antibodies and Conclusions
    Monoclonal Antibodies
    Conclusions and Future Considerations
    Index

    Biography

    Bernard S. Wostmann (University of Notre Dame) (Author)