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2 edition of Pathogenic anaerobic organisms of the Actinomyces group found in the catalog.

Pathogenic anaerobic organisms of the Actinomyces group

Dagny Erikson

Pathogenic anaerobic organisms of the Actinomyces group

by Dagny Erikson

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Published by H. M. Stationery off. in London .
Written in English


Edition Notes

Statementby Dagny Erikson.
Classifications
LC ClassificationsQR201.A2 E7
The Physical Object
Pagination63 p.
Number of Pages63
ID Numbers
Open LibraryOL28847M
LC Control Numbersg 42000019
OCLC/WorldCa14747307

Photo Gallery of Bacterial Pathogens The web contains many images (pictures) of bacteria. The purpose of this page is to provide a central location to go to for images of pathogenic bacteria on the web. Anaerobic, Gram-positive rods. Actinomyces sp. (fig 1, 2) Clostridium botulinum (fig 1). American Association of Zoo Veterinarians Infectious Disease Committee Manual ACTINOMYCOSIS bodies and associated disease such as discospondylitis, in small carnivores. In humans, in addition to other sites of infection, actinomycosis can be associated with contraceptive intrauterine devices.

primarilyinvolve anaerobic bacteria are brain abscesses and human or animal bite-wound infections. Virtually all types of infection that occur in humans may involve anaerobic bacteria, and no organ or tissue of the body is immune to infection with these organisms. Some . A facultative anaerobe is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent.. Some examples of facultatively anaerobic bacteria are Staphylococcus spp., Streptococcus spp., Escherichia coli, Salmonella, Listeria spp., Shewanella oneidensis and Yersinia n eukaryotes are also facultative anaerobes Biochemistry and ecology: Oxygen, .

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. 5th complex (purple complex): Veillonella parvula and Actinomyces odontolyticus. Sub-gingival microbial complexes. A. actinomycetemcomitans serotype b, Selenomonas noxia and Actinomyces naeslundii genospecies 2 (A. viscosus) were outliers with little relation to each other and the 5 major complexes.


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Pathogenic anaerobic organisms of the Actinomyces group by Dagny Erikson Download PDF EPUB FB2

Get this from a library. Pathogenic anaerobic organisms of the Actinomyces group. [Dagny Erikson]. Actinomyces spp. now classified as Aggregatibacter actinomycetemcomitans (AA) are periodontal pathogens, which may be transmitted in saliva.

actinomycetemcomitans is also a part of the Haemophilus aphrophilus, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae group of bacteria (HACEK) that cause some infective endocarditis. The group of gram-positive bacillary organisms broadly known as “aerobic actinomycetes” consists of a vast array of taxonomically heterogeneous and divergent genera.

This chapter deals only with those genera having the most impact on human health care, i.e., those that usually affect primarily patients with immunocompromising conditions.

The Pathogenic Aerobic Organisms of the Actinomyces Group. in differentiating between the various types is deprecated on the ground that the division between the aerobic and anaerobic species is not sufficiently sharp. and in helping to define more clearly the Cited by: In this study the pathogenic anaerobic section of the Actinomyees group comprises those Gram-positive filamentous microorganisms-which exhibit, true branching least some phases, of their growth, require a reduced oxygen tension for vigourous growth invitro and have been isolated from human or animal cases of actinomycosis.

There are apparently two main types, one which produces small Author: Dagny. Erikson. Author(s): Erikson,Dagny Title(s): Pathogenic anaerobic organisms of the Actinomyces group/ by Dagny Erikson.

Country of Publication: England Publisher: London, H. Actinomyces spp and Propionibacterium propionicus (previously Arachnia propionica) are members of a large group of pleomorphic Gram-positive bacteria, many of which fhave some tendency toward mycelial growth.

Both are members of the oral flora of humans or animals. Actinomyces species, in particular, are major components of dental plaque. A israelii, A gerencseriae (previously A israelii Cited by: 6. R.P. Allaker, in Medical Microbiology (Eighteenth Edition), Infections with Gram-positive rods.

Any of these bacteria can occur as components of mixed anaerobic infections, and Actinomyces species can undoubtedly adopt a pathogenic role.

Most cases of actinomycosis are caused by Actinomyces israelii and are cervicofacial, although the disease can also occur in the thorax, abdomen and. Anaerobic infections are caused by anaerobic bacteria. Obligately anaerobic bacteria do not grow on solid media in room air (% carbon dioxide and 21% oxygen); facultatively anaerobic bacteria can grow in the presence or absence of air.

Microaerophilic bacteria do not grow at all aerobically or grow poorly, but grow better under 10% carbon dioxide or anaerobically. Anaerobic Actinomycetes and Related Organisms.

The recovery rate of Actinomyces in anaerobic microbiological cultures was %, with a yield of 4 positive cultures. to be a hitherto Author: Val Hall. The predominant anaerobic bacteria included Bacteroides fragilis group isolates (), Peptostreptococcus spp. (), Prevotella spp. (), Clostridium spp.

(70), and Fusobacterium spp. (43). Facultative anaerobes: They are capable of growh under both aerobic and anaerobic conditions. (Enterobacteriaceae group, Staphylococcus aureus). Aerotolerant anaerobes: Are anaerobic bacteria that are not killed by exposure to oxygen. Capnophiles: Capnophilic bacteria require increased concentration of carbondioxide (5% to 10%) and approximately 15% oxygen.

Over a 7-year period, we isolated Actinomyces -like organisms (ALOs) which were not clearly identifiable. Using well-defined probes coding for sequences specific for recently described Actinomyces species (A.

turicensis, A. radingae, and A. europaeus), we were able to identify strains. The majority belonged to the A. turicensis by: The role of anaerobic bacteria in tonsillitis is hard to elucidate because these organisms are normally prevalent on the surface of the tonsils and pharynx as well as in the core of tonsils and adenoids, so that cultures taken directly, from these areas are difficult to interpret.

Anaerobic bacteria are part of the normal on pharyngeal flora and are capable of interfering with the in-vitro. Bacteroides are some of the most common anaerobic bacteria species in the foot wounds of diabetics.

Often, anaerobes co-exist with aerobic bacteria, which need oxygen to thrive. This is common in foot ulcers, which makes them more difficult to treat. Other anaerobes, such as those in the Actinomyces genus, can cause dental infections within the.

Gram positive pathogenic bacteria organisms. STUDY. PLAY. Staphylococcus aureus facultative anaerobic, grows well with increased CO2 conditions, Catalase negative, ALPHA HEMOLYSIS. Group A Strep pyogenes, the bacteria completely destroys the blood cells and creates a clear zone in the agar.

In intra-abdominal infections and female genital infections, the most frequent isolates are of the B. fragilis group followed by anaerobic gram-positive cocci and Clostridium species. Recognition of the pathogenic features of these organisms enables prompt identification and initiation of appropriate management of the infections that they cause.

Full text of "Pathogenic micro-organisms; a text-book of microbiology for physicians and students of medicine" See other formats. Anaerobic bacteria are common in the gastrointestinal tract, vagina, dental crevices, and chronic wounds when blood supply is impaired.

Facultative bacteria can grow with or without oxygen. They produce energy by fermentation or anaerobic respiration when oxygen is absent and by aerobic cellular respiration when oxygen is present.

Actinomycosis is a chronic suppurative infection which occurs in man and in domestic animals such as horses, cattle and swine. It is characterized by the formation of abscesses and multiple draining. The taxonomy of anaerobic bacteria has changed in recent years because of their improved characterization using genetic studies.

1,3 The ability to differentiate between similar strains enables better characterization of type of infection and predicted antimicrobial susceptibility. The species of anaerobes most frequently isolated from clinical infections are Bacteroides, anaerobic Gram.Pathogenic bacteria are bacteria that can cause disease.

This article deals with human pathogenic bacteria. Although most bacteria are harmless or often beneficial, some are pathogenic, with the number of species estimated as fewer than a hundred that are seen to cause infectious diseases in humans.

By contrast, several thousand species exist in the human digestive system.The predominant anaerobes causing meningitis are Gram-negative bacilli (including Bacteriodes fragilis group), Fusobacterium spp. (mostly Fusobacterium necrophorum) and Clostridium spp. (mostly Clostridium perfringens).

1,2 Peptostreptococcus spp., Veillonella, Actinomyces, Propionibacterium acnes and Eubacterium are less commonly isolated.

The main predisposing conditions to anaerobic.