GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Keywords: Medical microbiology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (795 pages)
    Edition: 18th ed.
    ISBN: 9780702051197
    DDC: 616/.01
    Language: English
    Note: Front cover -- Medical Microbiology -- Copyright page -- Preface -- Sources of Electronic Information -- Contributors -- Table of Contents -- 1 Microbial Biology -- 1 Microbiology and medicine -- An outline history of microbiology and infection -- Micro-organisms and infection -- Hygiene, treatment and prevention of infection -- Sources and spread of infection -- Recommended reading -- Websites -- 2 Morphology and nature of micro-organisms -- Prokaryotic and eukaryotic cells -- Anatomy of the bacterial cell -- Bacterial nucleoid -- Ribosomes -- Cytoplasmic membrane -- Cell wall -- Extracellular polysaccharides: capsules, microcapsules and loose slime -- S-layers -- Flagella and motility -- Fimbriae and pili -- Importance of microbial surface structures in infection -- The bacterial 'life cycle' -- Bacterial spores -- Conidia (exospores) -- Pleomorphism and involution -- Spheroplasts, protoplasts and L-forms -- The nature and composition of viruses -- Structure -- Viral nucleic acid -- Virion enzymes -- Viral proteins -- Viroids, defective viruses and prions -- Recommended reading -- Websites -- 3 Classification, identification and typing of micro-organisms -- Taxonomy -- Methods of classification -- Adansonian or numerical classification -- DNA composition -- DNA homology -- Ribosomal RNA sequencing -- Classification in clinical practice -- Protozoa -- Fungi -- Bacteria -- Actinobacteria -- Firmicutes -- Proteobacteria -- Bacteroidetes -- Spirochaetales -- Chlamydiae -- Viruses -- Identification of micro-organisms -- Microscopy -- Cultural characteristics -- Biochemical reactions -- Indirect identification methods -- Gene-targeted analyses -- Antibody reactions -- Latex agglutination -- Enzyme-linked immunosorbent assay -- Haemagglutination and haemadsorption -- Fluorescence microscopy and immunofluorescence -- Immuno-polymerase chain reaction. , Typing of bacteria -- Biotyping -- Serotyping -- Phage typing -- Bacteriocin typing -- Protein typing -- Restriction endonuclease typing -- Gene probe typing -- Polymerase chain reaction typing -- Multilocus sequence typing -- Variable number tandem repeat analysis -- Whole genome based typing -- Recommended reading -- Websites -- 4 Bacterial growth, physiology and death -- Bacterial growth -- Types of growth -- Growth phases in broth culture -- Media for bacterial growth -- Media used for isolation and identification of pathogens -- Selective and indicator media -- Media for laboratory studies -- Bacterial physiology -- Nutritional types -- Physical conditions required for growth -- Growth atmosphere -- Growth temperature -- Extremophiles -- Bacterial metabolism -- Adaptive responses in bacteria -- Bacterial defence against noxious chemicals -- Bacterial viability -- Bacterial death -- Sterilization and disinfection -- Key definitions -- Sterilization. -- Disinfection. -- Antisepsis. -- Methods used in sterilization and disinfection -- Heat. -- Ionizing radiation. -- Filtration. -- Gaseous chemical agents. -- Liquid chemical agents. -- Choice of method -- Measurement of microbial death -- D value -- Resistance to sterilization and disinfection -- Sterilization by moist heat -- Sterilization by dry heat -- Disinfection by chemicals -- Recommended reading -- Websites -- 5 Antimicrobial agents -- Antibacterial agents -- Inhibitors of bacterial cell wall synthesis -- β-Lactam agents -- Penicillins. -- Cephalosporins. -- Other β-lactam agents. -- Glycopeptides -- Other inhibitors of bacterial cell wall synthesis -- Inhibitors of bacterial protein synthesis -- Tetracyclines -- Chloramphenicol -- Aminoglycosides -- Macrolides -- Lincosamides -- Fusidic acid -- Linezolid -- Streptogramins -- Mupirocin -- Inhibitors of nucleic acid synthesis. , Sulphonamides and diaminopyrimidines -- Quinolones -- Nitroimidazoles -- Nitrofurans -- Rifamycins -- Miscellaneous antibacterial agents -- Polymyxins -- Daptomycin -- Antimycobacterial agents -- Antifungal agents -- Antiviral agents -- Nucleoside analogues -- Inhibitors of herpesvirus DNA polymerases -- Other inhibitors of viral RNA or DNA synthesis -- Non-nucleoside anti-herpes agents -- Agents that block viral uncoating -- Neuraminidase inhibitors -- Interferons -- Antiretroviral agents -- Nucleoside and nucleotide reverse transcriptase inhibitors -- Non-nucleoside reverse transcriptase inhibitors -- HIV protease inhibitors -- HIV fusion inhibitors -- HIV entry inhibitors -- HIV integrase inhibitors -- Antiparasitic agents -- Antimicrobial sensitivity tests -- Antibacterial agents -- Antiviral agents -- Phenotypic assays -- Genotypic assays -- Assay of antimicrobial drugs -- Recommended reading -- Websites -- 6 Bacterial genetics -- Genetic organization and regulation of the bacterial cell -- Processes leading to protein synthesis -- Gene regulation -- Mutation -- Phenotypic variation -- Types of mutation -- Gene transfer -- Transformation -- Conjugation -- Mobilization of chromosomal genes by conjugation -- Transduction -- Lysogenic conversion -- Plasmids -- Properties encoded by plasmids -- Plasmid classification -- Plasmid epidemiology and distribution -- Transposons, integrons and genomic islands -- Genetic mapping -- Genetic basis of antibiotic resistance -- Intrinsic resistance -- Acquired resistance -- Chromosomal mutations -- Transferable antibiotic resistance -- Control of antibiotic resistance -- Applications of molecular genetics -- Specific gene probes -- Nucleic acid amplification technology -- Real-time amplification -- Molecular typing of micro-organisms -- Genomics -- Recommended reading -- Websites -- 7 Virus-cell interactions. , The cytolytic or cytocidal growth cycle -- Attachment (adsorption) -- Entry (penetration) -- Uncoating -- Synthesis of viral components -- Class 1: Double-stranded DNA viruses -- Class 2: Single-stranded DNA viruses -- Class 3: Double-stranded RNA viruses -- Class 4: '+' single-stranded RNA viruses -- Class 5: '−' single-stranded RNA viruses -- Class 6: Retroviruses -- Class 7: Partial double-stranded DNA viruses -- Assembly and release -- Microscopy of infected cells -- Non-cytocidal productive infections -- Abortive (non-productive) infections -- Temperature-sensitive mutants -- Defective interfering particles -- Abortive infections maintained by interferons -- Latency -- Transformation -- Recommended reading -- Websites -- 2 Infection and Immunity -- 8 Immunological principles: -- General properties of antigens -- Antigenic determinants -- Antigenic specificity -- Immunoglobulins -- Antibody structure -- IgG -- IgA -- IgM -- IgD -- IgE -- Antigen binding -- Antibody diversity -- Immunoglobulin variability -- Secreted and membrane immunoglobulins -- Antibody function -- Neutralization -- Complement activation -- Cell binding and opsonization -- Antigen recognition -- B cell receptor -- T cell receptor -- Major histocompatibility complex -- Gene organization -- MHC antigen structure and distribution -- Function -- Recommended reading -- Website -- 9 Innate and acquired immunity -- The immune system -- Lymphoid cells -- Myeloid cells -- Mononuclear phagocytes -- Granulocytes -- Neutrophils. -- Eosinophils. -- Basophils. -- Platelets -- Innate immunity -- Features of innate immunity -- Determinants of innate immunity -- Species and strains -- Individual differences and influence of age -- Hormonal influences and sex -- Nutritional factors -- Mechanisms of innate immunity -- Mechanical barriers and surface secretions -- Humoral defence mechanisms. , Lysozyme -- Basic polypeptides -- Acute-phase proteins -- Interferon -- Complement -- Classical pathway -- Alternative pathway -- Regulation -- Membrane attack complex -- Functions -- Cells -- Phagocytes -- Chemotaxis -- Phagocytosis -- Natural killer (NK) cells -- Eosinophils -- Temperature -- Inflammation -- Acquired immunity -- Tissues involved in immune reactions -- Development of the immune system -- Lymphocyte trafficking -- Clonal selection -- Cellular activation -- Thymus-independent antigens -- Thymus-dependent antigens -- Antigen processing and presentation -- T cell activation -- B cell activation -- Humoral immunity -- Synthesis of antibody -- Monoclonal antibodies -- Cell-mediated immunity -- Cell-mediated cytotoxicity -- Cytotoxic T lymphocytes -- MHC-unrestricted cytotoxic cells -- Lytic mechanism -- Lymphokine production -- Role of macrophages -- Generation of immune responses -- Control of immune responses -- Role of antigen -- Role of antibody -- Regulatory T cells -- Tolerance -- Immunodeficiency -- Defective innate defence mechanisms -- Defective acquired immune defence mechanisms -- Primary immunodeficiencies -- Secondary immunodeficiencies -- Hypersensitivity -- Type I: anaphylactic -- Type II: cytotoxic -- Type III: immune complex -- Type IV: cell-mediated or delayed -- Autoimmunity -- Recommended reading -- Websites -- 10 Immunity in viral infections -- The response to viral infections -- Interferons -- Acquired immunity -- Humoral immunity -- Cell-mediated immunity -- Induction of an immune response -- Immunopathology -- Antigenic variation -- Persistence of virus -- Vaccines -- Recommended reading -- Website -- 11 Parasitic infections: -- Pathogenic mechanisms -- Mechanical tissue damage -- Physiological effects -- Tissue damage -- Immune defence mechanisms -- Innate defences -- Macrophages -- Granulocytes -- Mast cells. , Platelets.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Autotrophic ammonia-oxidising bacteria (AOB) are a crucial component of the microbial communities of nitrifying wastewater treatment systems. Nitrification is known to occur in reactors of different configuration, but whether AOB communities are different in reactors of different design is unknown. We compared the diversity and community structure of the betaproteobacterial AOB in two full-scale treatment reactors – a biological aerated filter (BAF) and a trickling filter – receiving the same wastewater. Polymerase chain reaction (PCR) of 16S ribosomal RNA (rRNA) gene fragments with AOB-selective primers was combined with denaturing gradient gel electrophoresis (DGGE) to allow comparative analysis of the dominant AOB populations. The phylogenetic affiliation of the dominant AOB was determined by cloning and sequencing PCR-amplified 16S rRNA gene fragments. DGGE profiles were compared using a probability-based similarity index (Raup and Crick). The use of a probability-based index of similarity allowed us to evaluate if the differences and similarities observed in AOB community structure in different samples were statistically significant or could be accounted for by chance matching of bands in DGGE profiles, which would suggest random colonisation of the reactors by different AOB. The community structure of AOB was different in different sections of each of the reactors and differences were also noted between the reactors. All AOB-like sequences identified, grouped within the genus Nitrosomonas. A greater diversity of AOB was detected in the trickling filters than in the BAF though all samples analysed appeared to be dominated by AOB most closely related to Nitrosococcus mobilis. Numerical analysis of DGGE profiles indicated that the AOB communities in depth profiles from the filter beds were selected in a non-random manner.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 158 (1998), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Colony forming unit counts of Campylobacter jejuni were serially determined in a variety of microcosms in which growth was not expected. Unremitting decline in colony counts occurred in nutrient-free systems, however, transient increases were observed in human faecal emulsions and nutrient media on storage at between 1 and 25°C. The phenomenon, which was more pronounced at lower temperatures, could not be attributed to sampling errors, cell clumping or the influence of minor fluctuations in experimental conditions. C. jejuni is capable of either growth at low temperatures or transition between temporarily nonculturable and culturable states.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Oxford BSL : Blackwell Science Ltd
    Molecular microbiology 31 (1999), S. 0 
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The complex mycobacterial cell envelope is recognized as a critical factor in our failure to control tuberculosis, leprosy and other non-tuberculous pathogens. Although its composition has been extensively determined, many details regarding the organization of the envelope remain uncertain. This is particularly so for the non-covalently bound lipids, whose natural distribution may be disrupted by conventional biochemical or cytological techniques. In order to study the native organization of lipid domains in the mycobacterial envelope, we have applied a range of fluorescent lipophilic probes to live mycobacteria, including Mycobacterium smegmatis, Mycobacterium tuberculosis, Mycobacterium avium, Mycobacterium gadium and Mycobacterium aurum, and analysed the resultant signals by fluorescence microscopy and digital image processing. Five key features were observed: (i) the presence of both envelope and intracellular lipid domains; (ii) differential localization of probes into these domains influenced predominantly by their hydrophobicity, as modelled by their calculated octanol:water partition coefficients and by their amphiphilicities; (iii) uneven distribution of lipophilic material in the envelope; (iv) selective labelling of septal regions of the envelope; and (v) modification of labelling patterns by additional treatments such as fluorescence quenching antibodies, detergents and solvents. Using this last approach, a coherent cell envelope lipid domain was demonstrated outside the cytoplasmic membrane and, for the first time, the proposed covalently linked mycolyl-arabinogalactan-peptidoglycan macromolecular complex was imaged directly. The use of fluorescent probes and high-resolution fluorescence microscopy has enabled us to obtain a coherent view of distinct lipid domains in mycobacteria. Further application of this approach will facilitate understanding of the role of lipids in the physiology of these organisms.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 71 (1990), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Monoclonal antibodies directed against the cytotoxic activity of Aeromonas sobria were raised by immunising mice with a culture supernatant concentrated by ammonium sulphate precipitation. Neutralising antibodies were specifically selected for by exposing hybridomas to cytotoxic levels of the immunising preparation. Cultures free from cytopathic effects after three hours were selected for futher investigation. Ten cytotoxin resistant hybridomas were isolated but only two of these produced detectable neutralising activity in Vero and rabbit red blood cell assays. Different polypeptide binding patterns were observed for the neutralising antibodies compared with the other antibodies in immunoblotting studies. One of the neutralising antibodies was shown to act at an early stage in the development of cytotoxicity, probably by inhibiting binding.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 77 (2000), S. 173-177 
    ISSN: 1572-9699
    Keywords: active and non-active cells ; cytochemical enrichment ; density gradients ; physical separation ; tetrazolium salts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We present a method for the selective, physical separation of active and non-active bacterial cells from natural communities. The method exploits the reduction of tetrazolium salts to form insoluble formazan crystals intracellularly in response to the addition of different oxidisable substrates. The intracellular deposition of formazan alters the bouyant density of active cells enabling them to be separated by density gradient centrifugation. The method has been successfully applied to the fractionation and collection of large whole cell sub-populations of active and non-active cells from sea-water samples. Removal of the bands from the density gradient, followed by PCR amplification and DGGE analyses showed distinct differences in the PCR amplicon diversity associated with the active and non-active cell fractions; an indication of changes in bacterial community structure in response to the addition of oxidisable substrate. Thus, based on their in situ respiration potential, the approach enables the cytochemical enrichment and molecular characterisation of mixed bacterial populations in natural environments.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1572-9699
    Keywords: viability ; culturability ; anabiosis ; cryptobiosis ; dormancy ; metabolic activity ; thanatology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In microbiology the terms ‘viability’ and ‘culturability’ are often equated. However, in recent years the apparently self-contradictory expression ‘viable-but-nonculturable’ (‘VBNC’) has been applied to cells with various and often poorly defined physiological attributes but which, nonetheless, could not be cultured by methods normally appropriate to the organism concerned. These attributes include apparent cell integrity, the possession of some form of measurable cellular activity and the apparent capacity to regain culturability. We review the evidence relating to putative VBNC cells and stress our view that most of the reports claiming a return to culturability have failed to exclude the regrowth of a limited number of cells which had never lost culturability. We argue that failure to differentiate clearly between use of the terms ‘viability’ and ‘culturability’ in an operational versus a conceptual sense is fuelling the current debate, and conclude with a number of proposals that are designed to help clarify the major issues involved. In particular, we suggest an alternative operational terminology that replaces ‘VBNC’ with expressions that are internally consistent.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular histology 23 (1991), S. 529-533 
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The possibility of applying light microscope cytochemical techniques in order to determine the identity and physiological state of microbes, particularly bacteria, has received little attention in recent years. The technical obstacles have perhaps been thought too great and the potential rewards too small. In order to demonstrate the feasibility of the cytochemical approach to problems in microbiology, an indoxyl method was developed for the demonstration of β-galactosidase activity in unfixed bacteria. Cells were immobilized on 3-aminopropyltriethoxysilane-treated glass, permeabilized by air drying, then incubated in an indoxyl β-d-galactopyranoside substrate plus a ferri-ferrocyanide reaction mix. Specific enzyme activity was demonstrated inEscherichia coli and a strain ofBacillus subtilis containing theLacZ gene. In the former, activity was inducible both before and after immobilization. These findings indicate that the basic prerequisites for light microscopical demonstration of bacterial intracellular activities, i.e. immobilization without disruption and reagent access without loss of localization, can now be fulfilled. Further development of this approach is desirable because it allows rapid demonstration of specific microbial activities without an intervening period ofin vitro cultivation, thus avoiding the time delays and adaptive changes associated with propagation on laboratory media.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...