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Books > Science & Mathematics > Biology, life sciences > Microbiology (non-medical) > Bacteriology
Coliforms are widely used as indicators of water quality and
sanitary status, and levels are regulated as standards and
legislation in many jurisdictions. The group of organisms known as
coliform bacteria are commonly used to gauge quality and potential
for health risk of potable and recreational waters, and are
stimulated in water quality standards and legislation of many
jurisdictions worldwide. The contents of this book includes an
overview about the involvement of biofilms in waterborne diseases;
currently employed methods of analysis for coliform bacteria; the
testing of coliformic bacteria for water departments using
automated sampling and analysis; the prevalence of E.coli outbreaks
linked to the consumption of certain products; and finally, a
review of the sources of coliform bacteria in freshwaters.
The ability of various microorganisms to attach to surfaces and
create biofilms on them is rather a cause of concern for many
industries, including for those occupied with food production and
processing. Thus, the attachment of bacterial pathogens to food
processing equipment is considered as an essential contributing
factor in foodborne disease outbreaks, since this may ultimately
lead to the contamination of food products. Improperly cleaned
surfaces promote soil build-up, and, in the presence of water,
contribute to the development of microbial biofilms which may
contain pathogenic bacteria, such as Salmonella. Salmonella
enterica is one of the most significant enteric foodborne bacterial
pathogens, with host-adapted strains able to cause systemic human
infections and persist for long periods of time, posing significant
public health problems. This book discusses the prevalence, risk
factors and treatment options of Salmonella.
Enterococcus faecalis is a gram-positive, coccus shaped, lactic
acid bacterium, with demonstrated ubiquity across multiple
anatomical sites. Enterococcus faecalis isolates have been isolated
from clinical samples as the etiological agent in patients with
overt infections, and from body sites previously thought to be
sterile but absent of signs and symptoms of infection. E. faecalis
is implicated in both human health and disease, recognised as a
commensal, a probiotic and an opportunistic multiply resistant
pathogen. E faecalis has emerged as a key pathogen in nosocomial
infections. Enterococcus faecalis is a commensal bacterium
inhabiting the gastro-intestinal tract of humans. Interestingly,
although it is not clear whether E faecalis is part of the oral
cavity microbiome, it is frequently recovered from root canal
infections. Specifically, it is the major pathogen found in
persistent infections associated with root canal treatment failure.
Moreover, E faecalis is one of the leading multidrug resistant
nosocomial pathogens, causing infective endocarditis, and
participating in urinary tract, wound, and device- device-related
infections. This book discusses the molecular characteristics, its
role in nonsocomial infections and the antibacterial effects of
Enterococcus faecalis. It begins by discussing the virulence
factors of enterococcus faecalis and concludes with E faecalis in
dental infections.
"The Flagellar World" is a unique publication. The product of years
of research and data collection by the author, this book is a
pictorial guide to flagella in a variety of organisms. Each EM
image is accompanied by a short description of the system in each
organism. These never-before-seen pictures represent a wide variety
of flagella, including "Legionella pneumophila," "Escherichia
coli," "Pseudomonas aeruginosa," and many others. Researchers in
microbiology, immunology, and parasitology will find this a
fascinating and useful resource.
A unique publication with many never before seen EM images of
flagellaA historical document of years of research on flagellaFills
a specific niche that shows flagella in several varied organisms
More than eighty years ago, before we knew much about the
structure of cells, Russian botanist Boris Kozo-Polyansky
brilliantly outlined the concept of symbiogenesis, the symbiotic
origin of cells with nuclei. It was a half-century later, only when
experimental approaches that Kozo-Polyansky lacked were applied to
his hypotheses, that scientists began to accept his view that
symbiogenesis could be united with Darwin's concept of natural
selection to explain the evolution of life. After decades of
neglect, ridicule, and intellectual abuse, Kozo-Polyansky's ideas
are now endorsed by virtually all biologists.
Kozo-Polyansky's seminal work is presented here for the first
time in an outstanding annotated translation, updated with
commentaries, references, and modern micrographs of symbiotic
phenomena.
While we have a feeling that our 'thought experiment' could bear
fruit, we are far from the idea that equivalent expressions by the
brain and the immune function point to an axis of both systems.
Al-though major players, they also depend on the regulation of the
rest of the body. As we focus here rather on a social context, many
more factors are to be accounted for. Shanty-towns, rather than
being seen in a dismissive context, may provide clues to historical
conditions, a tip off perhaps to update the idea of
'individualistic' immunity. Subjected to all kinds of inward and
outward interferences, obviously, a historical approach is complex.
Urban overcrowding, by replacing nomadic life, allowed multiple
interacting brains to develop civilization and science. The fact
that survival under prolonged siege had been recorded, filthy food
and water supply notwithstanding, suggests that collective immune
adaptation may not be out of question either. Fortunately,
experimental evidence in mice and other animal comes in support to
our hypothesis of collective immunity. As yet no consensus about
immune stimulation or downplaying has been reached, our aim being
the possibility of reciprocal immune influence as such.
This book is a facsimile reprint and may contain imperfections such
as marks, notations, marginalia and flawed pages.
Pathological bacteria are only 5% of the bacterial population. The
other 95% promote the health and well-being of Earth. The digestive
tract holds trillions of archaebacteria from over 4 1/2 billion
years ago. When in danger, bacteria create shells for protection.
Are humans evolved shells in order to protect the bacteria from
atmospheric oxygen? Life forms are descended from prokaryote
archaebacteria, for whom oxygen is unnecessary. After millions of
years of evolution, can bacteria now direct humans to return the
planet, through pollution, ozone depletion, or a nuclear disaster,
to a more manageable level of oxygen from a present 21% to less
than 1%? No bacteria reside in the cranial brain. Was the enteric
nervous system the first brain? Are the archaebacteria within the
gastrointestinal tract directing the actions of the body? Are the
archaebacteria the architects and directors of evolution?
Blackwell is proud to announce Professor Barry Marshall, along with
Dr. Robin Warren, have been awarded the Nobel Prize in physiology
or medicine.
Providing background and the human touch of a discovery process
taking almost a century, "Helicobacter Pioneers" is a collection of
accounts from pioneering researchers of "Helicobacter pylori," of
who had firsthand knowledge of the pioneer.
A remarkable work with original accounts that will never date,
this book will inspire readers interested in gastroenterology,
microbiology, or any facet of medical or scientific history.
"Although most people are aware that bacteria are all around us,
few would guess that they produce such distinctive and accessible
signs. Whether you're walking on the beach, visiting a zoo or
aquarium, buying groceries, looking for fossils, drinking beer,
traipsing through a swamp, or cleaning scum from beneath a dripping
outdoor faucet, you're surrounded by bacterial field marks. You
don't need a laboratory or fancy equipment to find out what kind of
bacteria are there—this guide will tell you how."—from the
Introduction Bacteria are an integral aspect of every habitat in
which they occur and affect the lives of humans, other animals, and
plants in many ways. Too often, we equate "bacterium" with
"pathogen" and think of bacteria as things to avoid. In a
fascinating guide perfect for naturalists, students, teachers, and
tourists alike, Betsey Dexter Dyer lets the reader know that it is
possible to observe bacteria with all the senses. Many groups of
bacteria can be easily identified in the field (or in the
refrigerator) without a microscope. Written for curious souls of
all ages, A Field Guide to Bacteria opens our eyes—and noses and
ears—to this hidden (or neglected) world around us. Useful
illustrations, including 120 color photographs, accompany Dyer's
lively text throughout.
Functional Analysis of Bacterial Genes: A Practical Manual summarises the principles and the key methods used to analyse the function of genes in bacteria. Written by members of the Bacillus subtilis Functional Analysis Consortium, this book provides a guide to the many approaches for the systematic analysis of gene function. Features include: - In-depth discussion of the theory and application of the methods
- A step-by-step practical guide to each method
- Experimental examples to indicate expected results
- Contact information for suppliers and resource centres
Written by internationally recognised authors, Functional Analysis of Bacterial Genes: A Practical Manual will be a valuable resource to researchers and technicians using functional analysis for many bacterial species, whether in the academic departments of microbiology or genetics, the biotechnology, biomedicine or pharmaceutical industries, or other centres of genomics and bioinformatics. "This volume, and the pioneering effort it represents, will be of interest not only to those of us who are specialists in B. subtilis but to all microbiologists and genome scientists who face the formidable task of uncovering the functions of the myriad uncharacterised genes that are emerging from large-scale sequencing." -Richard Losick , The Biological Laboratories, Harvard University, Cambridge, Massachusetts, USA
The Archaea, or archaebacteria, constitute the fifth kingdom of living organisms, as distinct from true bacteria as from fungi, animals, and plants. They were very likely the first life forms, from which all other living things evolved, because they are naturally adapted to thrive in the anoxic extreme environments that prevailed when life originated on the earth. Less than 20 years ago they were discovered inhabiting hot springs, salt pans, animal rumens, deep sea vents, soils, and deeply buried sediments in environments in which other life forms could not survive. Their discovery has given a unique vantage on the principles of life, because they present unique life histories and metabolisms, in effect a novel, previously unrecognized type of life. Many of the Archaea are of significant commercial importance; for instance, PCR, which has revolutionized molecular biology, is based on enzymes found in a member of the Archaea that was originally found in a hot geyser pool in Yellowstone National Park.
Since the appearance of Darwin's book, "The Origin of Species,"
adaptation is one of the processes that explains the diversity of
species in ecosystems. Adaptive phenomena in the 19th century and
until the mid-20th century have been analyzed in macroscopic
biological systems, however since the second half of the 20th
century and to date the development of disciplines such as
Molecular Biology, has allowed us to delve into the mechanisms that
regulate cell physiology. The molecular bases that allow explaining
the adaptation processes of microorganisms to their environment
have special relevance, because through their analysis it is
possible to size the complexity of these mechanisms that involve
receptors of a protein nature associated with transduction chains
that transport the information flow to genomic DNA, and which
subsequently involves the emission of a response through the
expression of specific genes. From the point of view of the
adaptive phenomenon analysis, the approach through the molecular
bases makes it possible to understand the enormous diversity of the
microbial world. Mainly for two reasons, on the one hand the
presence of micro gradients in the bacterial ecological niches that
are continuously fluctuating, which forces the microorganisms to a
rapid adaptation phenomenon. And on the other hand, horizontal gene
transfer phenomena, which allow bacteria the information exchange.
These two elements carry great intensity in establishing new
relationships. This phenomenon is especially relevant if it is
related to a concept that Darwin cites in the Origin of Species,
"The tangled riverbank", where it is emphasized that the new
interactions establishment is the basic driving force for the new
species generation. This mechanism is explained by the positive
feedback loop generation, whereby ecosystems with high levels of
biological diversity generate new interactions that lead to new
species, which in turn tends to make the ecosystem network more
complex. This complexity analyzed in its molecular bases allows to
generate new research questions that can be applied to other
knowledge areas, such as Biotechnology. The analysis of the
molecular bases of the microorganisms adequacy, makes it possible
to identify and characterize mechanisms that implemented in
different pharmaceutical areas and agricultural industry has led to
the product generation with high added value, a clear example of
this economic development is the enzyme industry and even
recombinant protein production. Finally, it is convenient to
emphasize the need to incorporate the analysis of the molecular
bases of adaptation from the perspective of omics techniques.
Techniques that allow the study of processes and mechanisms to be
approached from a global perspective. This book summarizes some
topics of special relevance referring to adaptive processes of
different microorganisms of special relevance both in basic and
applied research.
Enterobacter is a relatively lesser known member of family
Enterobacteriaceae with at least fifteen species more or less
involved in different human infections. As little knowledge is
available about its pathogenicity and virulence factors, this
compilation discusses the factors and genes involved. The plants
and microbes with antimicrobial potential in the synthesis of
nanoparticles for the control of pathogenic Enterobacteriaceae are
highlighted, and the authors discuss how, to overcome the
complexities regarding antibiotic therapies and multiple drug
resistance, there is a dire need to develop some novel clinical
approaches and strategies. The factors causing multi-drug
resistance are highlighted, including under or overuse of
antibiotics, prolonged use of antibiotics, poor infection control,
poor hygiene and sanitation.
Dieses Lehrbuch bietet Antworten auf Fragen wie "Wie funktioniert
diese mikrobiologische Methode ganz praktisch? Wie kann ich meine
Forschung um eine sinnvolle Methode erweitern?" Vergleichbar einem
Kochbuch sind Zutaten und einzelne Handgriffe ubersichtlich
aufgelistet und mit praktischen Tipps und Gefahrenhinweisen
versehen. Ob zu Fluoreszenzmikroskopie, Genomik oder Isolierung und
Kultivierung von Bakterien, Archaeen und Pilzen - erfahrene
MikrobiologInnen finden hier ebenso schnelle Hinweise wie
Quereinsteiger, die ihr Arbeitsgebiet mikrobiologisch erweitern
wollen. Die fachkundigen PraktikerInnen Astrid Brandis-Heep, Erika
Kothe und Timo Zimmermann haben ubersichtlich praktische Methoden
und Ratschlage fur den Laboralltag zusammengestellt, die -
mikrobiologisches Grundwissen vorausgesetzt - Masterstudierenden,
Doktoranden, Postdocs und fortgeschrittenen Arbeitsgruppen sowohl
im Alltag als auch fur eine Neuausrichtung Ihrer Forschung
entscheidende Hinweise geben.
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